Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
197e01b6 | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
24b06219 | 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
29182b13 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
c5aa993b | 23 | |
23860348 | 24 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 25 | |
c906108c SS |
26 | #include "defs.h" |
27 | #include "gdb_string.h" | |
28 | #include <ctype.h> | |
29 | #include <fcntl.h> | |
c906108c SS |
30 | #include "inferior.h" |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
60250e8b | 33 | #include "exceptions.h" |
c906108c | 34 | #include "target.h" |
c5aa993b | 35 | /*#include "terminal.h" */ |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "objfiles.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "gdbthread.h" | |
c2c6d25f | 40 | #include "remote.h" |
4e052eda | 41 | #include "regcache.h" |
fd0407d6 | 42 | #include "value.h" |
1ff9c3d6 | 43 | #include "gdb_assert.h" |
6867ae3e | 44 | #include "observer.h" |
a77053c2 | 45 | #include "solib.h" |
37a105a1 DJ |
46 | #include "cli/cli-decode.h" |
47 | #include "cli/cli-setshow.h" | |
c906108c | 48 | |
7a292a7a | 49 | #include <ctype.h> |
9846de1b | 50 | #include <sys/time.h> |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 CV |
61 | #include "remote-fileio.h" |
62 | ||
23860348 | 63 | /* Prototypes for local functions. */ |
6426a772 JM |
64 | static void cleanup_sigint_signal_handler (void *dummy); |
65 | static void initialize_sigint_signal_handler (void); | |
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 | ||
23860348 | 326 | /* This is non-zero if taregt stopped for a watchpoint. */ |
3c3bea1c GS |
327 | static int remote_stopped_by_watchpoint_p; |
328 | ||
c906108c SS |
329 | |
330 | static struct target_ops remote_ops; | |
331 | ||
332 | static struct target_ops extended_remote_ops; | |
333 | ||
43ff13b4 | 334 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 335 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
336 | static struct target_ops remote_async_ops; |
337 | ||
338 | static struct target_ops extended_async_remote_ops; | |
339 | ||
6426a772 JM |
340 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
341 | ``forever'' still use the normal timeout mechanism. This is | |
342 | currently used by the ASYNC code to guarentee that target reads | |
343 | during the initial connect always time-out. Once getpkt has been | |
344 | modified to return a timeout indication and, in turn | |
345 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 346 | this can go away. */ |
6426a772 JM |
347 | static int wait_forever_enabled_p = 1; |
348 | ||
349 | ||
c906108c SS |
350 | /* This variable chooses whether to send a ^C or a break when the user |
351 | requests program interruption. Although ^C is usually what remote | |
352 | systems expect, and that is the default here, sometimes a break is | |
353 | preferable instead. */ | |
354 | ||
355 | static int remote_break; | |
356 | ||
c906108c SS |
357 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
358 | remote_open knows that we don't have a file open when the program | |
359 | starts. */ | |
819cc324 | 360 | static struct serial *remote_desc = NULL; |
c906108c | 361 | |
c906108c SS |
362 | /* This variable sets the number of bits in an address that are to be |
363 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
364 | leading zeros, the entire address would be sent. This variable | |
365 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
366 | initial implementation of remote.c restricted the address sent in | |
367 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
368 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
369 | address was never sent. Since fixing this bug may cause a break in | |
370 | some remote targets this variable is principly provided to | |
23860348 | 371 | facilitate backward compatibility. */ |
c906108c SS |
372 | |
373 | static int remote_address_size; | |
374 | ||
6426a772 JM |
375 | /* Tempoary to track who currently owns the terminal. See |
376 | target_async_terminal_* for more details. */ | |
377 | ||
378 | static int remote_async_terminal_ours_p; | |
379 | ||
11cf8741 | 380 | \f |
11cf8741 | 381 | /* User configurable variables for the number of characters in a |
24b06219 | 382 | memory read/write packet. MIN (rs->remote_packet_size, |
ad10f812 | 383 | rs->sizeof_g_packet) is the default. Some targets need smaller |
24b06219 | 384 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
385 | (speed up transfers). The variables ``preferred_*'' (the user |
386 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 387 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
388 | |
389 | struct memory_packet_config | |
390 | { | |
391 | char *name; | |
392 | long size; | |
393 | int fixed_p; | |
394 | }; | |
395 | ||
396 | /* Compute the current size of a read/write packet. Since this makes | |
397 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
398 | ||
399 | static long | |
400 | get_memory_packet_size (struct memory_packet_config *config) | |
401 | { | |
d01949b6 | 402 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
403 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
404 | law?) that some hosts don't cope very well with large alloca() | |
405 | calls. Eventually the alloca() code will be replaced by calls to | |
406 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 407 | be lifted or removed. */ |
11cf8741 JM |
408 | #ifndef MAX_REMOTE_PACKET_SIZE |
409 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
410 | #endif | |
3de11b2e | 411 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 412 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 413 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
414 | #endif |
415 | long what_they_get; | |
416 | if (config->fixed_p) | |
417 | { | |
418 | if (config->size <= 0) | |
419 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
420 | else | |
421 | what_they_get = config->size; | |
422 | } | |
423 | else | |
424 | { | |
24b06219 | 425 | what_they_get = rs->remote_packet_size; |
23860348 | 426 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
427 | if (config->size > 0 |
428 | && what_they_get > config->size) | |
429 | what_they_get = config->size; | |
23860348 | 430 | /* Limit it to the size of the targets ``g'' response. */ |
d01949b6 AC |
431 | if ((rs->actual_register_packet_size) > 0 |
432 | && what_they_get > (rs->actual_register_packet_size)) | |
433 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
434 | } |
435 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
436 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
437 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
438 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
439 | return what_they_get; | |
440 | } | |
441 | ||
442 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 443 | something really big then do a sanity check. */ |
11cf8741 JM |
444 | |
445 | static void | |
446 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
447 | { | |
448 | int fixed_p = config->fixed_p; | |
449 | long size = config->size; | |
450 | if (args == NULL) | |
8a3fe4f8 | 451 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
452 | else if (strcmp (args, "hard") == 0 |
453 | || strcmp (args, "fixed") == 0) | |
454 | fixed_p = 1; | |
455 | else if (strcmp (args, "soft") == 0 | |
456 | || strcmp (args, "limit") == 0) | |
457 | fixed_p = 0; | |
458 | else | |
459 | { | |
460 | char *end; | |
461 | size = strtoul (args, &end, 0); | |
462 | if (args == end) | |
8a3fe4f8 | 463 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
464 | #if 0 |
465 | /* Instead of explicitly capping the size of a packet to | |
466 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
467 | instead allowed to set the size to something arbitrarily | |
23860348 | 468 | large. */ |
11cf8741 | 469 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 470 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
471 | #endif |
472 | } | |
23860348 | 473 | /* Extra checks? */ |
11cf8741 JM |
474 | if (fixed_p && !config->fixed_p) |
475 | { | |
e2e0b3e5 AC |
476 | if (! query (_("The target may not be able to correctly handle a %s\n" |
477 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 478 | config->name, size)) |
8a3fe4f8 | 479 | error (_("Packet size not changed.")); |
11cf8741 | 480 | } |
23860348 | 481 | /* Update the config. */ |
11cf8741 JM |
482 | config->fixed_p = fixed_p; |
483 | config->size = size; | |
484 | } | |
485 | ||
486 | static void | |
487 | show_memory_packet_size (struct memory_packet_config *config) | |
488 | { | |
a3f17187 | 489 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 490 | if (config->fixed_p) |
a3f17187 | 491 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
492 | get_memory_packet_size (config)); |
493 | else | |
a3f17187 | 494 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
495 | get_memory_packet_size (config)); |
496 | } | |
497 | ||
498 | static struct memory_packet_config memory_write_packet_config = | |
499 | { | |
500 | "memory-write-packet-size", | |
501 | }; | |
502 | ||
503 | static void | |
504 | set_memory_write_packet_size (char *args, int from_tty) | |
505 | { | |
506 | set_memory_packet_size (args, &memory_write_packet_config); | |
507 | } | |
508 | ||
509 | static void | |
510 | show_memory_write_packet_size (char *args, int from_tty) | |
511 | { | |
512 | show_memory_packet_size (&memory_write_packet_config); | |
513 | } | |
514 | ||
515 | static long | |
516 | get_memory_write_packet_size (void) | |
517 | { | |
518 | return get_memory_packet_size (&memory_write_packet_config); | |
519 | } | |
520 | ||
521 | static struct memory_packet_config memory_read_packet_config = | |
522 | { | |
523 | "memory-read-packet-size", | |
524 | }; | |
525 | ||
526 | static void | |
527 | set_memory_read_packet_size (char *args, int from_tty) | |
528 | { | |
529 | set_memory_packet_size (args, &memory_read_packet_config); | |
530 | } | |
531 | ||
532 | static void | |
533 | show_memory_read_packet_size (char *args, int from_tty) | |
534 | { | |
535 | show_memory_packet_size (&memory_read_packet_config); | |
536 | } | |
537 | ||
538 | static long | |
539 | get_memory_read_packet_size (void) | |
540 | { | |
d01949b6 | 541 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
542 | long size = get_memory_packet_size (&memory_read_packet_config); |
543 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
544 | extra buffer size argument before the memory read size can be | |
24b06219 MK |
545 | increased beyond RS->remote_packet_size. */ |
546 | if (size > rs->remote_packet_size) | |
547 | size = rs->remote_packet_size; | |
11cf8741 JM |
548 | return size; |
549 | } | |
550 | ||
11cf8741 | 551 | \f |
5a2468f5 JM |
552 | /* Generic configuration support for packets the stub optionally |
553 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 554 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
555 | |
556 | enum packet_support | |
557 | { | |
558 | PACKET_SUPPORT_UNKNOWN = 0, | |
559 | PACKET_ENABLE, | |
560 | PACKET_DISABLE | |
561 | }; | |
562 | ||
5a2468f5 JM |
563 | struct packet_config |
564 | { | |
5a2468f5 JM |
565 | char *name; |
566 | char *title; | |
7f19b9a2 | 567 | enum auto_boolean detect; |
5a2468f5 JM |
568 | enum packet_support support; |
569 | }; | |
570 | ||
d471ea57 | 571 | /* Analyze a packet's return value and update the packet config |
23860348 | 572 | accordingly. */ |
d471ea57 AC |
573 | |
574 | enum packet_result | |
575 | { | |
576 | PACKET_ERROR, | |
577 | PACKET_OK, | |
578 | PACKET_UNKNOWN | |
579 | }; | |
580 | ||
5a2468f5 | 581 | static void |
d471ea57 | 582 | update_packet_config (struct packet_config *config) |
5a2468f5 | 583 | { |
d471ea57 AC |
584 | switch (config->detect) |
585 | { | |
7f19b9a2 | 586 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
587 | config->support = PACKET_ENABLE; |
588 | break; | |
7f19b9a2 | 589 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
590 | config->support = PACKET_DISABLE; |
591 | break; | |
7f19b9a2 | 592 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
593 | config->support = PACKET_SUPPORT_UNKNOWN; |
594 | break; | |
595 | } | |
5a2468f5 JM |
596 | } |
597 | ||
598 | static void | |
fba45db2 | 599 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
600 | { |
601 | char *support = "internal-error"; | |
602 | switch (config->support) | |
603 | { | |
604 | case PACKET_ENABLE: | |
605 | support = "enabled"; | |
606 | break; | |
607 | case PACKET_DISABLE: | |
608 | support = "disabled"; | |
609 | break; | |
610 | case PACKET_SUPPORT_UNKNOWN: | |
611 | support = "unknown"; | |
612 | break; | |
613 | } | |
614 | switch (config->detect) | |
615 | { | |
7f19b9a2 | 616 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
617 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
618 | config->name, support); | |
5a2468f5 | 619 | break; |
7f19b9a2 AC |
620 | case AUTO_BOOLEAN_TRUE: |
621 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
622 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
623 | config->name, support); | |
8e248173 | 624 | break; |
5a2468f5 JM |
625 | } |
626 | } | |
627 | ||
628 | static void | |
d471ea57 AC |
629 | add_packet_config_cmd (struct packet_config *config, |
630 | char *name, | |
631 | char *title, | |
e9e68a56 | 632 | cmd_sfunc_ftype *set_func, |
08546159 | 633 | show_value_ftype *show_func, |
d471ea57 AC |
634 | struct cmd_list_element **set_remote_list, |
635 | struct cmd_list_element **show_remote_list, | |
636 | int legacy) | |
637 | { | |
5a2468f5 JM |
638 | char *set_doc; |
639 | char *show_doc; | |
d471ea57 | 640 | char *cmd_name; |
3ed07be4 | 641 | |
5a2468f5 JM |
642 | config->name = name; |
643 | config->title = title; | |
7f19b9a2 | 644 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 645 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
646 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
647 | name, title); | |
648 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
649 | name, title); | |
d471ea57 | 650 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 651 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 652 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 653 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
e9e68a56 AC |
654 | set_func, show_func, |
655 | set_remote_list, show_remote_list); | |
23860348 | 656 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
657 | if (legacy) |
658 | { | |
659 | char *legacy_name; | |
b435e160 | 660 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
661 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
662 | set_remote_list); | |
663 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
664 | show_remote_list); | |
665 | } | |
5a2468f5 JM |
666 | } |
667 | ||
d471ea57 AC |
668 | static enum packet_result |
669 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 670 | { |
d471ea57 | 671 | if (buf[0] != '\0') |
5a2468f5 | 672 | { |
d471ea57 | 673 | /* The stub recognized the packet request. Check that the |
23860348 | 674 | operation succeeded. */ |
d471ea57 AC |
675 | switch (config->support) |
676 | { | |
677 | case PACKET_SUPPORT_UNKNOWN: | |
678 | if (remote_debug) | |
679 | fprintf_unfiltered (gdb_stdlog, | |
680 | "Packet %s (%s) is supported\n", | |
681 | config->name, config->title); | |
682 | config->support = PACKET_ENABLE; | |
683 | break; | |
684 | case PACKET_DISABLE: | |
8e65ff28 | 685 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 686 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
687 | break; |
688 | case PACKET_ENABLE: | |
689 | break; | |
690 | } | |
691 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
23860348 | 692 | /* "OK" - definitly OK. */ |
d471ea57 AC |
693 | return PACKET_OK; |
694 | if (buf[0] == 'E' | |
695 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
696 | && buf[3] == '\0') | |
23860348 | 697 | /* "Enn" - definitly an error. */ |
d471ea57 | 698 | return PACKET_ERROR; |
23860348 | 699 | /* The packet may or may not be OK. Just assume it is. */ |
d471ea57 AC |
700 | return PACKET_OK; |
701 | } | |
702 | else | |
703 | { | |
23860348 | 704 | /* The stub does not support the packet. */ |
d471ea57 AC |
705 | switch (config->support) |
706 | { | |
707 | case PACKET_ENABLE: | |
7f19b9a2 | 708 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 709 | /* If the stub previously indicated that the packet was |
23860348 | 710 | supported then there is a protocol error.. */ |
8a3fe4f8 | 711 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
712 | config->name, config->title); |
713 | else | |
23860348 | 714 | /* The user set it wrong. */ |
8a3fe4f8 | 715 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
716 | config->name, config->title); |
717 | break; | |
718 | case PACKET_SUPPORT_UNKNOWN: | |
719 | if (remote_debug) | |
720 | fprintf_unfiltered (gdb_stdlog, | |
721 | "Packet %s (%s) is NOT supported\n", | |
722 | config->name, config->title); | |
723 | config->support = PACKET_DISABLE; | |
724 | break; | |
725 | case PACKET_DISABLE: | |
726 | break; | |
727 | } | |
728 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
729 | } |
730 | } | |
731 | ||
444abaca DJ |
732 | enum { |
733 | PACKET_vCont = 0, | |
734 | PACKET_X, | |
735 | PACKET_qSymbol, | |
736 | PACKET_P, | |
737 | PACKET_p, | |
738 | PACKET_Z0, | |
739 | PACKET_Z1, | |
740 | PACKET_Z2, | |
741 | PACKET_Z3, | |
742 | PACKET_Z4, | |
743 | PACKET_qPart_auxv, | |
744 | PACKET_qGetTLSAddr, | |
745 | PACKET_MAX | |
746 | }; | |
506fb367 | 747 | |
444abaca | 748 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
749 | |
750 | static void | |
444abaca DJ |
751 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
752 | struct cmd_list_element *c) | |
dc8acb97 | 753 | { |
444abaca | 754 | struct packet_config *packet; |
dc8acb97 | 755 | |
444abaca DJ |
756 | for (packet = remote_protocol_packets; |
757 | packet < &remote_protocol_packets[PACKET_MAX]; | |
758 | packet++) | |
759 | { | |
760 | if (&packet->detect == c->var) | |
761 | { | |
762 | update_packet_config (packet); | |
763 | return; | |
764 | } | |
765 | } | |
766 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
767 | c->name); | |
dc8acb97 MS |
768 | } |
769 | ||
5a2468f5 | 770 | static void |
444abaca DJ |
771 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
772 | struct cmd_list_element *c, | |
773 | const char *value) | |
5a2468f5 | 774 | { |
444abaca | 775 | struct packet_config *packet; |
5a2468f5 | 776 | |
444abaca DJ |
777 | for (packet = remote_protocol_packets; |
778 | packet < &remote_protocol_packets[PACKET_MAX]; | |
779 | packet++) | |
780 | { | |
781 | if (&packet->detect == c->var) | |
782 | { | |
783 | show_packet_config_cmd (packet); | |
784 | return; | |
785 | } | |
786 | } | |
787 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
788 | c->name); | |
5a2468f5 JM |
789 | } |
790 | ||
d471ea57 AC |
791 | /* Should we try one of the 'Z' requests? */ |
792 | ||
793 | enum Z_packet_type | |
794 | { | |
795 | Z_PACKET_SOFTWARE_BP, | |
796 | Z_PACKET_HARDWARE_BP, | |
797 | Z_PACKET_WRITE_WP, | |
798 | Z_PACKET_READ_WP, | |
799 | Z_PACKET_ACCESS_WP, | |
800 | NR_Z_PACKET_TYPES | |
801 | }; | |
96baa820 | 802 | |
d471ea57 | 803 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 804 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 805 | |
7f19b9a2 | 806 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
807 | |
808 | static void | |
fba45db2 KB |
809 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
810 | struct cmd_list_element *c) | |
96baa820 | 811 | { |
d471ea57 AC |
812 | int i; |
813 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
814 | { | |
444abaca DJ |
815 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
816 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 817 | } |
96baa820 JM |
818 | } |
819 | ||
820 | static void | |
08546159 AC |
821 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
822 | struct cmd_list_element *c, | |
823 | const char *value) | |
96baa820 | 824 | { |
d471ea57 AC |
825 | int i; |
826 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
827 | { | |
444abaca | 828 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 829 | } |
96baa820 JM |
830 | } |
831 | ||
9d1f7ab2 MS |
832 | /* Should we try the 'ThreadInfo' query packet? |
833 | ||
834 | This variable (NOT available to the user: auto-detect only!) | |
835 | determines whether GDB will use the new, simpler "ThreadInfo" | |
836 | query or the older, more complex syntax for thread queries. | |
802188a7 | 837 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
838 | and set to false when the target fails to recognize it). */ |
839 | ||
840 | static int use_threadinfo_query; | |
841 | static int use_threadextra_query; | |
842 | ||
23860348 | 843 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
844 | static void *sigint_remote_twice_token; |
845 | static void *sigint_remote_token; | |
43ff13b4 | 846 | |
c906108c SS |
847 | /* These are pointers to hook functions that may be set in order to |
848 | modify resume/wait behavior for a particular architecture. */ | |
849 | ||
9a4105ab AC |
850 | void (*deprecated_target_resume_hook) (void); |
851 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
852 | \f |
853 | ||
c5aa993b | 854 | |
c906108c SS |
855 | /* These are the threads which we last sent to the remote system. |
856 | -1 for all or -2 for not sent yet. */ | |
857 | static int general_thread; | |
cce74817 | 858 | static int continue_thread; |
c906108c SS |
859 | |
860 | /* Call this function as a result of | |
861 | 1) A halt indication (T packet) containing a thread id | |
862 | 2) A direct query of currthread | |
863 | 3) Successful execution of set thread | |
864 | */ | |
865 | ||
866 | static void | |
fba45db2 | 867 | record_currthread (int currthread) |
c906108c | 868 | { |
c906108c | 869 | general_thread = currthread; |
cce74817 | 870 | |
c906108c SS |
871 | /* If this is a new thread, add it to GDB's thread list. |
872 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 873 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 874 | { |
39f77062 | 875 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 876 | ui_out_text (uiout, "[New "); |
39f77062 | 877 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 878 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 879 | } |
c906108c SS |
880 | } |
881 | ||
882 | #define MAGIC_NULL_PID 42000 | |
883 | ||
884 | static void | |
fba45db2 | 885 | set_thread (int th, int gen) |
c906108c | 886 | { |
d01949b6 AC |
887 | struct remote_state *rs = get_remote_state (); |
888 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 889 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
890 | |
891 | if (state == th) | |
892 | return; | |
893 | ||
894 | buf[0] = 'H'; | |
895 | buf[1] = gen ? 'g' : 'c'; | |
896 | if (th == MAGIC_NULL_PID) | |
897 | { | |
898 | buf[2] = '0'; | |
899 | buf[3] = '\0'; | |
900 | } | |
901 | else if (th < 0) | |
ecbc58df | 902 | xsnprintf (&buf[2], rs->remote_packet_size - 2, "-%x", -th); |
c906108c | 903 | else |
ecbc58df | 904 | xsnprintf (&buf[2], rs->remote_packet_size - 2, "%x", th); |
c906108c | 905 | putpkt (buf); |
24b06219 | 906 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c | 907 | if (gen) |
c5aa993b | 908 | general_thread = th; |
c906108c | 909 | else |
cce74817 | 910 | continue_thread = th; |
c906108c SS |
911 | } |
912 | \f | |
913 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
914 | ||
915 | static int | |
39f77062 | 916 | remote_thread_alive (ptid_t ptid) |
c906108c | 917 | { |
39f77062 | 918 | int tid = PIDGET (ptid); |
cce74817 | 919 | char buf[16]; |
c906108c | 920 | |
cce74817 | 921 | if (tid < 0) |
ecbc58df | 922 | xsnprintf (buf, sizeof (buf), "T-%08x", -tid); |
c906108c | 923 | else |
ecbc58df | 924 | xsnprintf (buf, sizeof (buf), "T%08x", tid); |
c906108c | 925 | putpkt (buf); |
c2d11a7d | 926 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
927 | return (buf[0] == 'O' && buf[1] == 'K'); |
928 | } | |
929 | ||
930 | /* About these extended threadlist and threadinfo packets. They are | |
931 | variable length packets but, the fields within them are often fixed | |
932 | length. They are redundent enough to send over UDP as is the | |
933 | remote protocol in general. There is a matching unit test module | |
934 | in libstub. */ | |
935 | ||
cce74817 JM |
936 | #define OPAQUETHREADBYTES 8 |
937 | ||
938 | /* a 64 bit opaque identifier */ | |
939 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
940 | ||
23860348 MS |
941 | /* WARNING: This threadref data structure comes from the remote O.S., |
942 | libstub protocol encoding, and remote.c. it is not particularly | |
943 | changable. */ | |
cce74817 JM |
944 | |
945 | /* Right now, the internal structure is int. We want it to be bigger. | |
946 | Plan to fix this. | |
c5aa993b | 947 | */ |
cce74817 | 948 | |
23860348 | 949 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 950 | |
9d1f7ab2 | 951 | /* gdb_ext_thread_info is an internal GDB data structure which is |
23860348 | 952 | equivalint to the reply of the remote threadinfo packet. */ |
cce74817 JM |
953 | |
954 | struct gdb_ext_thread_info | |
c5aa993b | 955 | { |
23860348 MS |
956 | threadref threadid; /* External form of thread reference. */ |
957 | int active; /* Has state interesting to GDB? | |
958 | regs, stack. */ | |
959 | char display[256]; /* Brief state display, name, | |
cedea757 | 960 | blocked/suspended. */ |
23860348 MS |
961 | char shortname[32]; /* To be used to name threads. */ |
962 | char more_display[256]; /* Long info, statistics, queue depth, | |
963 | whatever. */ | |
c5aa993b | 964 | }; |
cce74817 JM |
965 | |
966 | /* The volume of remote transfers can be limited by submitting | |
967 | a mask containing bits specifying the desired information. | |
968 | Use a union of these values as the 'selection' parameter to | |
969 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 970 | */ |
cce74817 JM |
971 | |
972 | #define TAG_THREADID 1 | |
973 | #define TAG_EXISTS 2 | |
974 | #define TAG_DISPLAY 4 | |
975 | #define TAG_THREADNAME 8 | |
c5aa993b | 976 | #define TAG_MOREDISPLAY 16 |
cce74817 | 977 | |
23860348 | 978 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 979 | |
b2dd6311 | 980 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 981 | |
a14ed312 | 982 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 983 | |
a14ed312 | 984 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 985 | |
23860348 | 986 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 987 | |
a14ed312 | 988 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 989 | |
a14ed312 | 990 | static char *pack_int (char *buf, int value); |
cce74817 | 991 | |
a14ed312 | 992 | static char *unpack_int (char *buf, int *value); |
cce74817 | 993 | |
a14ed312 | 994 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 995 | |
23860348 | 996 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 997 | |
23860348 | 998 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 999 | |
23860348 | 1000 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1001 | |
23860348 | 1002 | static int threadref_to_int (threadref *ref); |
cce74817 | 1003 | |
23860348 | 1004 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1005 | |
23860348 | 1006 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1007 | |
23860348 MS |
1008 | static char *pack_threadinfo_request (char *pkt, int mode, |
1009 | threadref *id); | |
cce74817 | 1010 | |
a14ed312 | 1011 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1012 | threadref *expectedref, |
a14ed312 KB |
1013 | struct gdb_ext_thread_info |
1014 | *info); | |
cce74817 JM |
1015 | |
1016 | ||
23860348 MS |
1017 | static int remote_get_threadinfo (threadref *threadid, |
1018 | int fieldset, /*TAG mask */ | |
a14ed312 | 1019 | struct gdb_ext_thread_info *info); |
cce74817 | 1020 | |
a14ed312 KB |
1021 | static char *pack_threadlist_request (char *pkt, int startflag, |
1022 | int threadcount, | |
23860348 | 1023 | threadref *nextthread); |
cce74817 | 1024 | |
a14ed312 KB |
1025 | static int parse_threadlist_response (char *pkt, |
1026 | int result_limit, | |
23860348 MS |
1027 | threadref *original_echo, |
1028 | threadref *resultlist, | |
1029 | int *doneflag); | |
cce74817 | 1030 | |
a14ed312 | 1031 | static int remote_get_threadlist (int startflag, |
23860348 | 1032 | threadref *nextthread, |
a14ed312 KB |
1033 | int result_limit, |
1034 | int *done, | |
23860348 MS |
1035 | int *result_count, |
1036 | threadref *threadlist); | |
cce74817 | 1037 | |
23860348 | 1038 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1039 | |
a14ed312 KB |
1040 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1041 | void *context, int looplimit); | |
cce74817 | 1042 | |
23860348 | 1043 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1044 | |
23860348 | 1045 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1046 | |
1047 | static const char hexchars[] = "0123456789abcdef"; | |
1048 | ||
1049 | static int | |
fba45db2 | 1050 | ishex (int ch, int *val) |
c906108c SS |
1051 | { |
1052 | if ((ch >= 'a') && (ch <= 'f')) | |
1053 | { | |
1054 | *val = ch - 'a' + 10; | |
1055 | return 1; | |
1056 | } | |
1057 | if ((ch >= 'A') && (ch <= 'F')) | |
1058 | { | |
1059 | *val = ch - 'A' + 10; | |
1060 | return 1; | |
1061 | } | |
1062 | if ((ch >= '0') && (ch <= '9')) | |
1063 | { | |
1064 | *val = ch - '0'; | |
1065 | return 1; | |
1066 | } | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | static int | |
fba45db2 | 1071 | stubhex (int ch) |
c906108c SS |
1072 | { |
1073 | if (ch >= 'a' && ch <= 'f') | |
1074 | return ch - 'a' + 10; | |
1075 | if (ch >= '0' && ch <= '9') | |
1076 | return ch - '0'; | |
1077 | if (ch >= 'A' && ch <= 'F') | |
1078 | return ch - 'A' + 10; | |
1079 | return -1; | |
1080 | } | |
1081 | ||
1082 | static int | |
fba45db2 | 1083 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1084 | { |
1085 | int nibble; | |
1086 | int retval = 0; | |
1087 | ||
1088 | while (fieldlength) | |
1089 | { | |
1090 | nibble = stubhex (*buff++); | |
1091 | retval |= nibble; | |
1092 | fieldlength--; | |
1093 | if (fieldlength) | |
1094 | retval = retval << 4; | |
1095 | } | |
1096 | return retval; | |
1097 | } | |
1098 | ||
1099 | char * | |
fba45db2 | 1100 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1101 | ULONGEST *result) |
c906108c SS |
1102 | { |
1103 | int nibble; | |
1104 | int retval = 0; | |
1105 | ||
1106 | while (ishex (*buff, &nibble)) | |
1107 | { | |
1108 | buff++; | |
1109 | retval = retval << 4; | |
1110 | retval |= nibble & 0x0f; | |
1111 | } | |
1112 | *result = retval; | |
1113 | return buff; | |
1114 | } | |
1115 | ||
1116 | static char * | |
fba45db2 | 1117 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1118 | { |
1119 | ishex (*buf++, val); | |
1120 | return buf; | |
1121 | } | |
1122 | ||
1123 | static char * | |
fba45db2 | 1124 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1125 | { |
1126 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1127 | return buf; | |
1128 | } | |
1129 | ||
1130 | static char * | |
fba45db2 | 1131 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1132 | { |
1133 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1134 | *pkt++ = hexchars[(byte & 0xf)]; | |
1135 | return pkt; | |
1136 | } | |
1137 | ||
1138 | static char * | |
fba45db2 | 1139 | unpack_byte (char *buf, int *value) |
c906108c SS |
1140 | { |
1141 | *value = stub_unpack_int (buf, 2); | |
1142 | return buf + 2; | |
1143 | } | |
1144 | ||
1145 | static char * | |
fba45db2 | 1146 | pack_int (char *buf, int value) |
c906108c SS |
1147 | { |
1148 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1149 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1150 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1151 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1152 | return buf; | |
1153 | } | |
1154 | ||
1155 | static char * | |
fba45db2 | 1156 | unpack_int (char *buf, int *value) |
c906108c SS |
1157 | { |
1158 | *value = stub_unpack_int (buf, 8); | |
1159 | return buf + 8; | |
1160 | } | |
1161 | ||
23860348 | 1162 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1163 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1164 | |
1165 | static char * | |
fba45db2 | 1166 | pack_string (char *pkt, char *string) |
c906108c SS |
1167 | { |
1168 | char ch; | |
1169 | int len; | |
1170 | ||
1171 | len = strlen (string); | |
1172 | if (len > 200) | |
23860348 | 1173 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1174 | pkt = pack_hex_byte (pkt, len); |
1175 | while (len-- > 0) | |
1176 | { | |
1177 | ch = *string++; | |
1178 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1179 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1180 | *pkt++ = ch; |
1181 | } | |
1182 | return pkt; | |
1183 | } | |
1184 | #endif /* 0 (unused) */ | |
1185 | ||
1186 | static char * | |
fba45db2 | 1187 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1188 | { |
1189 | while (length--) | |
1190 | *dest++ = *src++; | |
1191 | *dest = '\0'; | |
1192 | return src; | |
1193 | } | |
1194 | ||
1195 | static char * | |
fba45db2 | 1196 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1197 | { |
1198 | char *limit; | |
1199 | unsigned char *altid; | |
1200 | ||
1201 | altid = (unsigned char *) id; | |
1202 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1203 | while (pkt < limit) | |
1204 | pkt = pack_hex_byte (pkt, *altid++); | |
1205 | return pkt; | |
1206 | } | |
1207 | ||
1208 | ||
1209 | static char * | |
fba45db2 | 1210 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1211 | { |
1212 | char *altref; | |
1213 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1214 | int x, y; | |
1215 | ||
1216 | altref = (char *) id; | |
1217 | ||
1218 | while (inbuf < limit) | |
1219 | { | |
1220 | x = stubhex (*inbuf++); | |
1221 | y = stubhex (*inbuf++); | |
1222 | *altref++ = (x << 4) | y; | |
1223 | } | |
1224 | return inbuf; | |
1225 | } | |
1226 | ||
1227 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1228 | ints. This is due to a mismatch of specifications. We would like | |
1229 | to use 64bit thread references internally. This is an adapter | |
1230 | function. */ | |
1231 | ||
1232 | void | |
fba45db2 | 1233 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1234 | { |
1235 | unsigned char *scan; | |
1236 | ||
1237 | scan = (unsigned char *) id; | |
1238 | { | |
1239 | int i = 4; | |
1240 | while (i--) | |
1241 | *scan++ = 0; | |
1242 | } | |
1243 | *scan++ = (value >> 24) & 0xff; | |
1244 | *scan++ = (value >> 16) & 0xff; | |
1245 | *scan++ = (value >> 8) & 0xff; | |
1246 | *scan++ = (value & 0xff); | |
1247 | } | |
1248 | ||
1249 | static int | |
fba45db2 | 1250 | threadref_to_int (threadref *ref) |
c906108c SS |
1251 | { |
1252 | int i, value = 0; | |
1253 | unsigned char *scan; | |
1254 | ||
cfd77fa1 | 1255 | scan = *ref; |
c906108c SS |
1256 | scan += 4; |
1257 | i = 4; | |
1258 | while (i-- > 0) | |
1259 | value = (value << 8) | ((*scan++) & 0xff); | |
1260 | return value; | |
1261 | } | |
1262 | ||
1263 | static void | |
fba45db2 | 1264 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1265 | { |
1266 | int i; | |
1267 | unsigned char *csrc, *cdest; | |
1268 | ||
1269 | csrc = (unsigned char *) src; | |
1270 | cdest = (unsigned char *) dest; | |
1271 | i = 8; | |
1272 | while (i--) | |
1273 | *cdest++ = *csrc++; | |
1274 | } | |
1275 | ||
1276 | static int | |
fba45db2 | 1277 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1278 | { |
23860348 | 1279 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1280 | #if 0 |
1281 | unsigned char *srcp, *destp; | |
1282 | int i, result; | |
1283 | srcp = (char *) src; | |
1284 | destp = (char *) dest; | |
1285 | ||
1286 | result = 1; | |
1287 | while (i-- > 0) | |
1288 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1289 | return result; | |
1290 | #endif | |
1291 | return 1; | |
1292 | } | |
1293 | ||
1294 | /* | |
c5aa993b JM |
1295 | threadid:1, # always request threadid |
1296 | context_exists:2, | |
1297 | display:4, | |
1298 | unique_name:8, | |
1299 | more_display:16 | |
1300 | */ | |
c906108c SS |
1301 | |
1302 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1303 | ||
1304 | static char * | |
fba45db2 | 1305 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1306 | { |
23860348 MS |
1307 | *pkt++ = 'q'; /* Info Query */ |
1308 | *pkt++ = 'P'; /* process or thread info */ | |
1309 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1310 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1311 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1312 | return pkt; |
1313 | } | |
1314 | ||
23860348 | 1315 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1316 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1317 | add more fields as time goes by. */ |
c906108c | 1318 | |
23860348 | 1319 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1320 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1321 | fetch registers and its stack? */ |
c5aa993b | 1322 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1323 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1324 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1325 | the process. */ |
c906108c SS |
1326 | |
1327 | static int | |
fba45db2 KB |
1328 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1329 | struct gdb_ext_thread_info *info) | |
c906108c | 1330 | { |
d01949b6 | 1331 | struct remote_state *rs = get_remote_state (); |
c906108c | 1332 | int mask, length; |
cfd77fa1 | 1333 | int tag; |
c906108c | 1334 | threadref ref; |
24b06219 | 1335 | char *limit = pkt + rs->remote_packet_size; /* Plausible parsing limit. */ |
c906108c SS |
1336 | int retval = 1; |
1337 | ||
23860348 | 1338 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1339 | info->active = 0; |
1340 | info->display[0] = '\0'; | |
1341 | info->shortname[0] = '\0'; | |
1342 | info->more_display[0] = '\0'; | |
1343 | ||
23860348 MS |
1344 | /* Assume the characters indicating the packet type have been |
1345 | stripped. */ | |
c906108c SS |
1346 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1347 | pkt = unpack_threadid (pkt, &ref); | |
1348 | ||
1349 | if (mask == 0) | |
8a3fe4f8 | 1350 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1351 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1352 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1353 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1354 | return 0; |
1355 | } | |
1356 | copy_threadref (&info->threadid, &ref); | |
1357 | ||
23860348 | 1358 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1359 | |
23860348 MS |
1360 | /* Packets are terminated with nulls. */ |
1361 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1362 | { |
1363 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1364 | pkt = unpack_byte (pkt, &length); /* length */ |
1365 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1366 | { |
8a3fe4f8 | 1367 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1368 | retval = 0; |
1369 | break; | |
1370 | } | |
1371 | if (tag == TAG_THREADID) | |
1372 | { | |
1373 | if (length != 16) | |
1374 | { | |
8a3fe4f8 | 1375 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1376 | retval = 0; |
1377 | break; | |
1378 | } | |
1379 | pkt = unpack_threadid (pkt, &ref); | |
1380 | mask = mask & ~TAG_THREADID; | |
1381 | continue; | |
1382 | } | |
1383 | if (tag == TAG_EXISTS) | |
1384 | { | |
1385 | info->active = stub_unpack_int (pkt, length); | |
1386 | pkt += length; | |
1387 | mask = mask & ~(TAG_EXISTS); | |
1388 | if (length > 8) | |
1389 | { | |
8a3fe4f8 | 1390 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1391 | retval = 0; |
1392 | break; | |
1393 | } | |
1394 | continue; | |
1395 | } | |
1396 | if (tag == TAG_THREADNAME) | |
1397 | { | |
1398 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1399 | mask = mask & ~TAG_THREADNAME; | |
1400 | continue; | |
1401 | } | |
1402 | if (tag == TAG_DISPLAY) | |
1403 | { | |
1404 | pkt = unpack_string (pkt, &info->display[0], length); | |
1405 | mask = mask & ~TAG_DISPLAY; | |
1406 | continue; | |
1407 | } | |
1408 | if (tag == TAG_MOREDISPLAY) | |
1409 | { | |
1410 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1411 | mask = mask & ~TAG_MOREDISPLAY; | |
1412 | continue; | |
1413 | } | |
8a3fe4f8 | 1414 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1415 | break; /* Not a tag we know about. */ |
c906108c SS |
1416 | } |
1417 | return retval; | |
1418 | } | |
1419 | ||
1420 | static int | |
fba45db2 KB |
1421 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1422 | struct gdb_ext_thread_info *info) | |
c906108c | 1423 | { |
d01949b6 | 1424 | struct remote_state *rs = get_remote_state (); |
c906108c | 1425 | int result; |
d01949b6 | 1426 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1427 | |
1428 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1429 | putpkt (threadinfo_pkt); | |
24b06219 | 1430 | getpkt (threadinfo_pkt, rs->remote_packet_size, 0); |
23860348 MS |
1431 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, |
1432 | threadid, info); | |
c906108c SS |
1433 | return result; |
1434 | } | |
1435 | ||
c906108c SS |
1436 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1437 | ||
1438 | static char * | |
fba45db2 KB |
1439 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1440 | threadref *nextthread) | |
c906108c SS |
1441 | { |
1442 | *pkt++ = 'q'; /* info query packet */ | |
1443 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1444 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1445 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1446 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1447 | *pkt = '\0'; | |
1448 | return pkt; | |
1449 | } | |
1450 | ||
1451 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1452 | ||
1453 | static int | |
fba45db2 KB |
1454 | parse_threadlist_response (char *pkt, int result_limit, |
1455 | threadref *original_echo, threadref *resultlist, | |
1456 | int *doneflag) | |
c906108c | 1457 | { |
d01949b6 | 1458 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1459 | char *limit; |
1460 | int count, resultcount, done; | |
1461 | ||
1462 | resultcount = 0; | |
1463 | /* Assume the 'q' and 'M chars have been stripped. */ | |
24b06219 | 1464 | limit = pkt + (rs->remote_packet_size - BUF_THREAD_ID_SIZE); |
23860348 | 1465 | /* done parse past here */ |
c906108c SS |
1466 | pkt = unpack_byte (pkt, &count); /* count field */ |
1467 | pkt = unpack_nibble (pkt, &done); | |
1468 | /* The first threadid is the argument threadid. */ | |
1469 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1470 | while ((count-- > 0) && (pkt < limit)) | |
1471 | { | |
1472 | pkt = unpack_threadid (pkt, resultlist++); | |
1473 | if (resultcount++ >= result_limit) | |
1474 | break; | |
1475 | } | |
1476 | if (doneflag) | |
1477 | *doneflag = done; | |
1478 | return resultcount; | |
1479 | } | |
1480 | ||
1481 | static int | |
fba45db2 KB |
1482 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1483 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1484 | { |
d01949b6 | 1485 | struct remote_state *rs = get_remote_state (); |
c906108c | 1486 | static threadref echo_nextthread; |
d01949b6 AC |
1487 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1488 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1489 | int result = 1; |
1490 | ||
23860348 | 1491 | /* Trancate result limit to be smaller than the packet size. */ |
24b06219 MK |
1492 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= rs->remote_packet_size) |
1493 | result_limit = (rs->remote_packet_size / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1494 | |
1495 | pack_threadlist_request (threadlist_packet, | |
1496 | startflag, result_limit, nextthread); | |
1497 | putpkt (threadlist_packet); | |
24b06219 | 1498 | getpkt (t_response, rs->remote_packet_size, 0); |
c906108c SS |
1499 | |
1500 | *result_count = | |
1501 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1502 | threadlist, done); | |
1503 | ||
1504 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1505 | { | |
23860348 MS |
1506 | /* FIXME: This is a good reason to drop the packet. */ |
1507 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1508 | /* Possabilities : |
1509 | retransmit immediatly - race conditions | |
1510 | retransmit after timeout - yes | |
1511 | exit | |
1512 | wait for packet, then exit | |
1513 | */ | |
8a3fe4f8 | 1514 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1515 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1516 | } |
1517 | if (*result_count <= 0) | |
1518 | { | |
1519 | if (*done != 1) | |
1520 | { | |
8a3fe4f8 | 1521 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1522 | result = 0; |
1523 | } | |
1524 | return result; /* break; */ | |
1525 | } | |
1526 | if (*result_count > result_limit) | |
1527 | { | |
1528 | *result_count = 0; | |
8a3fe4f8 | 1529 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1530 | return 0; |
1531 | } | |
1532 | return result; | |
1533 | } | |
1534 | ||
23860348 MS |
1535 | /* This is the interface between remote and threads, remotes upper |
1536 | interface. */ | |
c906108c SS |
1537 | |
1538 | /* remote_find_new_threads retrieves the thread list and for each | |
1539 | thread in the list, looks up the thread in GDB's internal list, | |
1540 | ading the thread if it does not already exist. This involves | |
1541 | getting partial thread lists from the remote target so, polling the | |
1542 | quit_flag is required. */ | |
1543 | ||
1544 | ||
23860348 | 1545 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1546 | |
1547 | #define MAXTHREADLISTRESULTS 32 | |
1548 | ||
1549 | static int | |
fba45db2 KB |
1550 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1551 | int looplimit) | |
c906108c SS |
1552 | { |
1553 | int done, i, result_count; | |
1554 | int startflag = 1; | |
1555 | int result = 1; | |
1556 | int loopcount = 0; | |
1557 | static threadref nextthread; | |
1558 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1559 | ||
1560 | done = 0; | |
1561 | while (!done) | |
1562 | { | |
1563 | if (loopcount++ > looplimit) | |
1564 | { | |
1565 | result = 0; | |
8a3fe4f8 | 1566 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1567 | break; |
1568 | } | |
1569 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1570 | &done, &result_count, resultthreadlist)) | |
1571 | { | |
1572 | result = 0; | |
1573 | break; | |
1574 | } | |
23860348 | 1575 | /* Clear for later iterations. */ |
c906108c SS |
1576 | startflag = 0; |
1577 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1578 | if (result_count >= 1) | |
1579 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1580 | i = 0; | |
1581 | while (result_count--) | |
1582 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1583 | break; | |
1584 | } | |
1585 | return result; | |
1586 | } | |
1587 | ||
1588 | static int | |
fba45db2 | 1589 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1590 | { |
39f77062 | 1591 | ptid_t ptid; |
c906108c | 1592 | |
39f77062 KB |
1593 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1594 | ||
1595 | if (!in_thread_list (ptid)) | |
1596 | add_thread (ptid); | |
c906108c SS |
1597 | return 1; /* continue iterator */ |
1598 | } | |
1599 | ||
1600 | #define CRAZY_MAX_THREADS 1000 | |
1601 | ||
39f77062 KB |
1602 | static ptid_t |
1603 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1604 | { |
d01949b6 AC |
1605 | struct remote_state *rs = get_remote_state (); |
1606 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1607 | |
1608 | putpkt ("qC"); | |
24b06219 | 1609 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c | 1610 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1611 | /* Use strtoul here, so we'll correctly parse values whose highest |
1612 | bit is set. The protocol carries them as a simple series of | |
1613 | hex digits; in the absence of a sign, strtol will see such | |
1614 | values as positive numbers out of range for signed 'long', and | |
1615 | return LONG_MAX to indicate an overflow. */ | |
1616 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1617 | else |
1618 | return oldpid; | |
1619 | } | |
1620 | ||
802188a7 RM |
1621 | /* Find new threads for info threads command. |
1622 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1623 | */ |
cce74817 JM |
1624 | |
1625 | static void | |
fba45db2 | 1626 | remote_find_new_threads (void) |
c906108c | 1627 | { |
c5aa993b JM |
1628 | remote_threadlist_iterator (remote_newthread_step, 0, |
1629 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1630 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1631 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1632 | } |
1633 | ||
9d1f7ab2 MS |
1634 | /* |
1635 | * Find all threads for info threads command. | |
1636 | * Uses new thread protocol contributed by Cisco. | |
1637 | * Falls back and attempts to use the older method (above) | |
1638 | * if the target doesn't respond to the new method. | |
1639 | */ | |
1640 | ||
0f71a2f6 JM |
1641 | static void |
1642 | remote_threads_info (void) | |
1643 | { | |
d01949b6 AC |
1644 | struct remote_state *rs = get_remote_state (); |
1645 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1646 | char *bufp; |
0f71a2f6 JM |
1647 | int tid; |
1648 | ||
1649 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1650 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1651 | |
9d1f7ab2 MS |
1652 | if (use_threadinfo_query) |
1653 | { | |
1654 | putpkt ("qfThreadInfo"); | |
1655 | bufp = buf; | |
24b06219 | 1656 | getpkt (bufp, rs->remote_packet_size, 0); |
9d1f7ab2 | 1657 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1658 | { |
9d1f7ab2 MS |
1659 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1660 | { | |
1661 | do | |
1662 | { | |
c273b20f JB |
1663 | /* Use strtoul here, so we'll correctly parse values |
1664 | whose highest bit is set. The protocol carries | |
1665 | them as a simple series of hex digits; in the | |
1666 | absence of a sign, strtol will see such values as | |
1667 | positive numbers out of range for signed 'long', | |
1668 | and return LONG_MAX to indicate an overflow. */ | |
1669 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1670 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1671 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1672 | } |
1673 | while (*bufp++ == ','); /* comma-separated list */ | |
1674 | putpkt ("qsThreadInfo"); | |
1675 | bufp = buf; | |
24b06219 | 1676 | getpkt (bufp, rs->remote_packet_size, 0); |
9d1f7ab2 MS |
1677 | } |
1678 | return; /* done */ | |
1679 | } | |
1680 | } | |
1681 | ||
23860348 | 1682 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1683 | use_threadinfo_query = 0; |
1684 | remote_find_new_threads (); | |
1685 | return; | |
1686 | } | |
1687 | ||
802188a7 | 1688 | /* |
9d1f7ab2 MS |
1689 | * Collect a descriptive string about the given thread. |
1690 | * The target may say anything it wants to about the thread | |
1691 | * (typically info about its blocked / runnable state, name, etc.). | |
1692 | * This string will appear in the info threads display. | |
802188a7 | 1693 | * |
9d1f7ab2 MS |
1694 | * Optional: targets are not required to implement this function. |
1695 | */ | |
1696 | ||
1697 | static char * | |
1698 | remote_threads_extra_info (struct thread_info *tp) | |
1699 | { | |
d01949b6 | 1700 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1701 | int result; |
1702 | int set; | |
1703 | threadref id; | |
1704 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1705 | static char display_buf[100]; /* arbitrary... */ |
d01949b6 | 1706 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1707 | int n = 0; /* position in display_buf */ |
1708 | ||
1709 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1710 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1711 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1712 | |
1713 | if (use_threadextra_query) | |
1714 | { | |
ecbc58df WZ |
1715 | xsnprintf (bufp, rs->remote_packet_size, "qThreadExtraInfo,%x", |
1716 | PIDGET (tp->ptid)); | |
9d1f7ab2 | 1717 | putpkt (bufp); |
24b06219 | 1718 | getpkt (bufp, rs->remote_packet_size, 0); |
9d1f7ab2 MS |
1719 | if (bufp[0] != 0) |
1720 | { | |
30559e10 | 1721 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
cfd77fa1 | 1722 | result = hex2bin (bufp, (gdb_byte *) display_buf, n); |
30559e10 | 1723 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1724 | return display_buf; |
1725 | } | |
0f71a2f6 | 1726 | } |
9d1f7ab2 MS |
1727 | |
1728 | /* If the above query fails, fall back to the old method. */ | |
1729 | use_threadextra_query = 0; | |
1730 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1731 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1732 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1733 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1734 | if (threadinfo.active) | |
0f71a2f6 | 1735 | { |
9d1f7ab2 | 1736 | if (*threadinfo.shortname) |
ecbc58df WZ |
1737 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
1738 | " Name: %s,", threadinfo.shortname); | |
9d1f7ab2 | 1739 | if (*threadinfo.display) |
ecbc58df WZ |
1740 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1741 | " State: %s,", threadinfo.display); | |
9d1f7ab2 | 1742 | if (*threadinfo.more_display) |
ecbc58df WZ |
1743 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1744 | " Priority: %s", threadinfo.more_display); | |
9d1f7ab2 MS |
1745 | |
1746 | if (n > 0) | |
c5aa993b | 1747 | { |
23860348 | 1748 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1749 | if (',' == display_buf[n-1]) |
1750 | display_buf[n-1] = ' '; | |
1751 | return display_buf; | |
c5aa993b | 1752 | } |
0f71a2f6 | 1753 | } |
9d1f7ab2 | 1754 | return NULL; |
0f71a2f6 | 1755 | } |
c906108c | 1756 | \f |
c5aa993b | 1757 | |
24b06219 | 1758 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1759 | |
1760 | static void | |
fba45db2 | 1761 | extended_remote_restart (void) |
c906108c | 1762 | { |
d01949b6 AC |
1763 | struct remote_state *rs = get_remote_state (); |
1764 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1765 | |
1766 | /* Send the restart command; for reasons I don't understand the | |
1767 | remote side really expects a number after the "R". */ | |
c8d511af | 1768 | xsnprintf (buf, rs->remote_packet_size, "R%x", 0); |
c906108c SS |
1769 | putpkt (buf); |
1770 | ||
1771 | /* Now query for status so this looks just like we restarted | |
1772 | gdbserver from scratch. */ | |
1773 | putpkt ("?"); | |
24b06219 | 1774 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c SS |
1775 | } |
1776 | \f | |
1777 | /* Clean up connection to a remote debugger. */ | |
1778 | ||
c906108c | 1779 | static void |
fba45db2 | 1780 | remote_close (int quitting) |
c906108c SS |
1781 | { |
1782 | if (remote_desc) | |
2cd58942 | 1783 | serial_close (remote_desc); |
c906108c SS |
1784 | remote_desc = NULL; |
1785 | } | |
1786 | ||
23860348 | 1787 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1788 | |
1789 | static void | |
fba45db2 | 1790 | get_offsets (void) |
c906108c | 1791 | { |
d01949b6 AC |
1792 | struct remote_state *rs = get_remote_state (); |
1793 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1794 | char *ptr; |
c906108c SS |
1795 | int lose; |
1796 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1797 | struct section_offsets *offs; | |
1798 | ||
1799 | putpkt ("qOffsets"); | |
24b06219 | 1800 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c SS |
1801 | |
1802 | if (buf[0] == '\000') | |
1803 | return; /* Return silently. Stub doesn't support | |
23860348 | 1804 | this command. */ |
c906108c SS |
1805 | if (buf[0] == 'E') |
1806 | { | |
8a3fe4f8 | 1807 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1808 | return; |
1809 | } | |
1810 | ||
1811 | /* Pick up each field in turn. This used to be done with scanf, but | |
1812 | scanf will make trouble if CORE_ADDR size doesn't match | |
1813 | conversion directives correctly. The following code will work | |
1814 | with any size of CORE_ADDR. */ | |
1815 | text_addr = data_addr = bss_addr = 0; | |
1816 | ptr = buf; | |
1817 | lose = 0; | |
1818 | ||
1819 | if (strncmp (ptr, "Text=", 5) == 0) | |
1820 | { | |
1821 | ptr += 5; | |
1822 | /* Don't use strtol, could lose on big values. */ | |
1823 | while (*ptr && *ptr != ';') | |
1824 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1825 | } | |
1826 | else | |
1827 | lose = 1; | |
1828 | ||
1829 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1830 | { | |
1831 | ptr += 6; | |
1832 | while (*ptr && *ptr != ';') | |
1833 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1834 | } | |
1835 | else | |
1836 | lose = 1; | |
1837 | ||
1838 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1839 | { | |
1840 | ptr += 5; | |
1841 | while (*ptr && *ptr != ';') | |
1842 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1843 | } | |
1844 | else | |
1845 | lose = 1; | |
1846 | ||
1847 | if (lose) | |
8a3fe4f8 | 1848 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
1849 | |
1850 | if (symfile_objfile == NULL) | |
1851 | return; | |
1852 | ||
802188a7 | 1853 | offs = ((struct section_offsets *) |
a39a16c4 | 1854 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1855 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1856 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1857 | |
a4c8257b | 1858 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1859 | |
1860 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1861 | because that's what nlmconv does now. The real solution requires changes | |
1862 | to the stub and remote.c that I don't have time to do right now. */ | |
1863 | ||
a4c8257b EZ |
1864 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1865 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1866 | |
1867 | objfile_relocate (symfile_objfile, offs); | |
1868 | } | |
1869 | ||
1870 | /* Stub for catch_errors. */ | |
1871 | ||
0f71a2f6 | 1872 | static int |
36918e70 | 1873 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 1874 | { |
23860348 | 1875 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
1876 | /* NOTE: Return something >=0. A -ve value is reserved for |
1877 | catch_exceptions. */ | |
0f71a2f6 JM |
1878 | return 1; |
1879 | } | |
1880 | ||
9cbc821d | 1881 | static void |
36918e70 | 1882 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 1883 | { |
23860348 | 1884 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
1885 | |
1886 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 1887 | serial_write (remote_desc, "+", 1); |
c906108c SS |
1888 | |
1889 | /* Let the stub know that we want it to return the thread. */ | |
1890 | set_thread (-1, 0); | |
1891 | ||
39f77062 | 1892 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 1893 | |
23860348 | 1894 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 1895 | |
23860348 | 1896 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 1897 | immediate_quit--; |
c906108c | 1898 | |
9cbc821d | 1899 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
1900 | } |
1901 | ||
1902 | /* Open a connection to a remote debugger. | |
1903 | NAME is the filename used for communication. */ | |
1904 | ||
1905 | static void | |
fba45db2 | 1906 | remote_open (char *name, int from_tty) |
c906108c | 1907 | { |
92d1e331 | 1908 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
1909 | } |
1910 | ||
23860348 | 1911 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 1912 | static void |
fba45db2 | 1913 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 1914 | { |
92d1e331 | 1915 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
1916 | } |
1917 | ||
c906108c SS |
1918 | /* Open a connection to a remote debugger using the extended |
1919 | remote gdb protocol. NAME is the filename used for communication. */ | |
1920 | ||
1921 | static void | |
fba45db2 | 1922 | extended_remote_open (char *name, int from_tty) |
c906108c | 1923 | { |
92d1e331 DJ |
1924 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
1925 | 0 /* async_p */); | |
c906108c SS |
1926 | } |
1927 | ||
23860348 | 1928 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 1929 | static void |
fba45db2 | 1930 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 1931 | { |
92d1e331 DJ |
1932 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
1933 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
1934 | } |
1935 | ||
c906108c SS |
1936 | /* Generic code for opening a connection to a remote target. */ |
1937 | ||
d471ea57 AC |
1938 | static void |
1939 | init_all_packet_configs (void) | |
1940 | { | |
1941 | int i; | |
444abaca DJ |
1942 | for (i = 0; i < PACKET_MAX; i++) |
1943 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
1944 | } |
1945 | ||
23860348 | 1946 | /* Symbol look-up. */ |
dc8acb97 MS |
1947 | |
1948 | static void | |
1949 | remote_check_symbols (struct objfile *objfile) | |
1950 | { | |
d01949b6 | 1951 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
1952 | char *msg, *reply, *tmp; |
1953 | struct minimal_symbol *sym; | |
1954 | int end; | |
1955 | ||
444abaca | 1956 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
1957 | return; |
1958 | ||
d01949b6 AC |
1959 | msg = alloca (rs->remote_packet_size); |
1960 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 | 1961 | |
23860348 | 1962 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
1963 | |
1964 | putpkt ("qSymbol::"); | |
24b06219 | 1965 | getpkt (reply, rs->remote_packet_size, 0); |
444abaca | 1966 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 MS |
1967 | |
1968 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
1969 | { | |
1970 | tmp = &reply[8]; | |
cfd77fa1 | 1971 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
1972 | msg[end] = '\0'; |
1973 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
1974 | if (sym == NULL) | |
ecbc58df | 1975 | xsnprintf (msg, rs->remote_packet_size, "qSymbol::%s", &reply[8]); |
dc8acb97 | 1976 | else |
ecbc58df WZ |
1977 | xsnprintf (msg, rs->remote_packet_size, "qSymbol:%s:%s", |
1978 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
1979 | &reply[8]); | |
dc8acb97 | 1980 | putpkt (msg); |
24b06219 | 1981 | getpkt (reply, rs->remote_packet_size, 0); |
dc8acb97 MS |
1982 | } |
1983 | } | |
1984 | ||
9db8d71f DJ |
1985 | static struct serial * |
1986 | remote_serial_open (char *name) | |
1987 | { | |
1988 | static int udp_warning = 0; | |
1989 | ||
1990 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
1991 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
1992 | serial connection is reliable and not the serial connection promising | |
1993 | to be. */ | |
1994 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
1995 | { | |
8a3fe4f8 AC |
1996 | warning (_("\ |
1997 | The remote protocol may be unreliable over UDP.\n\ | |
1998 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
1999 | udp_warning = 1; |
2000 | } | |
2001 | ||
2002 | return serial_open (name); | |
2003 | } | |
2004 | ||
c906108c | 2005 | static void |
fba45db2 | 2006 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2007 | int extended_p, int async_p) |
c906108c | 2008 | { |
d01949b6 | 2009 | struct remote_state *rs = get_remote_state (); |
c906108c | 2010 | if (name == 0) |
8a3fe4f8 | 2011 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2012 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2013 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2014 | |
23860348 | 2015 | /* See FIXME above. */ |
92d1e331 DJ |
2016 | if (!async_p) |
2017 | wait_forever_enabled_p = 1; | |
6426a772 | 2018 | |
00cac895 DJ |
2019 | reopen_exec_file (); |
2020 | reread_symbols (); | |
2021 | ||
c906108c SS |
2022 | target_preopen (from_tty); |
2023 | ||
2024 | unpush_target (target); | |
2025 | ||
9db8d71f | 2026 | remote_desc = remote_serial_open (name); |
c906108c SS |
2027 | if (!remote_desc) |
2028 | perror_with_name (name); | |
2029 | ||
2030 | if (baud_rate != -1) | |
2031 | { | |
2cd58942 | 2032 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2033 | { |
9b74d5d3 KB |
2034 | /* The requested speed could not be set. Error out to |
2035 | top level after closing remote_desc. Take care to | |
2036 | set remote_desc to NULL to avoid closing remote_desc | |
2037 | more than once. */ | |
2cd58942 | 2038 | serial_close (remote_desc); |
9b74d5d3 | 2039 | remote_desc = NULL; |
c906108c SS |
2040 | perror_with_name (name); |
2041 | } | |
2042 | } | |
2043 | ||
2cd58942 | 2044 | serial_raw (remote_desc); |
c906108c SS |
2045 | |
2046 | /* If there is something sitting in the buffer we might take it as a | |
2047 | response to a command, which would be bad. */ | |
2cd58942 | 2048 | serial_flush_input (remote_desc); |
c906108c SS |
2049 | |
2050 | if (from_tty) | |
2051 | { | |
2052 | puts_filtered ("Remote debugging using "); | |
2053 | puts_filtered (name); | |
2054 | puts_filtered ("\n"); | |
2055 | } | |
23860348 | 2056 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2057 | |
d471ea57 | 2058 | init_all_packet_configs (); |
802188a7 | 2059 | |
c5aa993b | 2060 | general_thread = -2; |
cce74817 | 2061 | continue_thread = -2; |
c906108c | 2062 | |
9d1f7ab2 MS |
2063 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2064 | use_threadinfo_query = 1; | |
2065 | use_threadextra_query = 1; | |
2066 | ||
c906108c SS |
2067 | /* Without this, some commands which require an active target (such |
2068 | as kill) won't work. This variable serves (at least) double duty | |
2069 | as both the pid of the target process (if it has such), and as a | |
2070 | flag indicating that a target is active. These functions should | |
2071 | be split out into seperate variables, especially since GDB will | |
2072 | someday have a notion of debugging several processes. */ | |
2073 | ||
39f77062 | 2074 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2075 | |
2076 | if (async_p) | |
2077 | { | |
23860348 | 2078 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2079 | remote_async_terminal_ours_p = 1; |
2080 | ||
2081 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2082 | assumed that the target is already ready and able to respond to | |
2083 | requests. Unfortunately remote_start_remote() eventually calls | |
2084 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2085 | around this. Eventually a mechanism that allows | |
2086 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2087 | implemented. */ |
92d1e331 DJ |
2088 | wait_forever_enabled_p = 0; |
2089 | } | |
2090 | ||
23860348 | 2091 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2092 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2093 | |
36918e70 | 2094 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2095 | target (we'd otherwise be in an inconsistent state) and then |
2096 | propogate the error on up the exception chain. This ensures that | |
2097 | the caller doesn't stumble along blindly assuming that the | |
2098 | function succeeded. The CLI doesn't have this problem but other | |
2099 | UI's, such as MI do. | |
36918e70 AC |
2100 | |
2101 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2102 | this function should return an error indication letting the | |
ce2826aa | 2103 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2104 | ``target remote'' is directly wired to this function making that |
2105 | impossible. On a positive note, the CLI side of this problem has | |
2106 | been fixed - the function set_cmd_context() makes it possible for | |
2107 | all the ``target ....'' commands to share a common callback | |
2108 | function. See cli-dump.c. */ | |
109c3e39 AC |
2109 | { |
2110 | struct gdb_exception ex | |
2111 | = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); | |
2112 | if (ex.reason < 0) | |
2113 | { | |
2114 | pop_target (); | |
2115 | if (async_p) | |
2116 | wait_forever_enabled_p = 1; | |
2117 | throw_exception (ex); | |
2118 | } | |
2119 | } | |
c906108c | 2120 | |
92d1e331 DJ |
2121 | if (async_p) |
2122 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2123 | |
2124 | if (extended_p) | |
43ff13b4 | 2125 | { |
6240bebf | 2126 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2127 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2128 | putpkt ("!"); |
24b06219 | 2129 | getpkt (buf, rs->remote_packet_size, 0); |
43ff13b4 | 2130 | } |
a77053c2 | 2131 | |
9353355f | 2132 | post_create_inferior (¤t_target, from_tty); |
f78f6cf1 | 2133 | |
23860348 | 2134 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2135 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2136 | } |
2137 | ||
c906108c SS |
2138 | /* This takes a program previously attached to and detaches it. After |
2139 | this is done, GDB can be used to debug some other program. We | |
2140 | better not have left any breakpoints in the target program or it'll | |
2141 | die when it hits one. */ | |
2142 | ||
2143 | static void | |
fba45db2 | 2144 | remote_detach (char *args, int from_tty) |
c906108c | 2145 | { |
d01949b6 AC |
2146 | struct remote_state *rs = get_remote_state (); |
2147 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2148 | |
2149 | if (args) | |
8a3fe4f8 | 2150 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2151 | |
2152 | /* Tell the remote target to detach. */ | |
2153 | strcpy (buf, "D"); | |
24b06219 | 2154 | remote_send (buf, rs->remote_packet_size); |
c906108c | 2155 | |
23860348 | 2156 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2157 | if (target_is_async_p ()) |
2158 | serial_async (remote_desc, NULL, 0); | |
2159 | ||
cca728d0 | 2160 | target_mourn_inferior (); |
c906108c SS |
2161 | if (from_tty) |
2162 | puts_filtered ("Ending remote debugging.\n"); | |
2163 | } | |
2164 | ||
6ad8ae5c DJ |
2165 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2166 | ||
43ff13b4 | 2167 | static void |
6ad8ae5c | 2168 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2169 | { |
43ff13b4 | 2170 | if (args) |
8a3fe4f8 | 2171 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2172 | |
23860348 | 2173 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2174 | if (target_is_async_p ()) |
2cd58942 | 2175 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2176 | |
cca728d0 | 2177 | target_mourn_inferior (); |
43ff13b4 JM |
2178 | if (from_tty) |
2179 | puts_filtered ("Ending remote debugging.\n"); | |
2180 | } | |
2181 | ||
c906108c SS |
2182 | /* Convert hex digit A to a number. */ |
2183 | ||
30559e10 | 2184 | static int |
fba45db2 | 2185 | fromhex (int a) |
c906108c SS |
2186 | { |
2187 | if (a >= '0' && a <= '9') | |
2188 | return a - '0'; | |
2189 | else if (a >= 'a' && a <= 'f') | |
2190 | return a - 'a' + 10; | |
2191 | else if (a >= 'A' && a <= 'F') | |
2192 | return a - 'A' + 10; | |
c5aa993b | 2193 | else |
8a3fe4f8 | 2194 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2195 | } |
2196 | ||
30559e10 | 2197 | static int |
cfd77fa1 | 2198 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2199 | { |
2200 | int i; | |
2201 | ||
30559e10 MS |
2202 | for (i = 0; i < count; i++) |
2203 | { | |
2204 | if (hex[0] == 0 || hex[1] == 0) | |
2205 | { | |
2206 | /* Hex string is short, or of uneven length. | |
23860348 | 2207 | Return the count that has been converted so far. */ |
30559e10 MS |
2208 | return i; |
2209 | } | |
2210 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2211 | hex += 2; | |
2212 | } | |
2213 | return i; | |
2214 | } | |
2215 | ||
c906108c SS |
2216 | /* Convert number NIB to a hex digit. */ |
2217 | ||
2218 | static int | |
fba45db2 | 2219 | tohex (int nib) |
c906108c SS |
2220 | { |
2221 | if (nib < 10) | |
c5aa993b | 2222 | return '0' + nib; |
c906108c | 2223 | else |
c5aa993b | 2224 | return 'a' + nib - 10; |
c906108c | 2225 | } |
30559e10 MS |
2226 | |
2227 | static int | |
cfd77fa1 | 2228 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2229 | { |
2230 | int i; | |
23860348 | 2231 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2232 | if (count == 0) |
cfd77fa1 | 2233 | count = strlen ((char *) bin); |
30559e10 MS |
2234 | |
2235 | for (i = 0; i < count; i++) | |
2236 | { | |
2237 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2238 | *hex++ = tohex (*bin++ & 0xf); | |
2239 | } | |
2240 | *hex = 0; | |
2241 | return i; | |
2242 | } | |
c906108c | 2243 | \f |
506fb367 DJ |
2244 | /* Check for the availability of vCont. This function should also check |
2245 | the response. */ | |
c906108c SS |
2246 | |
2247 | static void | |
506fb367 | 2248 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2249 | { |
506fb367 DJ |
2250 | strcpy (buf, "vCont?"); |
2251 | putpkt (buf); | |
2252 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2253 | |
506fb367 DJ |
2254 | /* Make sure that the features we assume are supported. */ |
2255 | if (strncmp (buf, "vCont", 5) == 0) | |
2256 | { | |
2257 | char *p = &buf[5]; | |
2258 | int support_s, support_S, support_c, support_C; | |
2259 | ||
2260 | support_s = 0; | |
2261 | support_S = 0; | |
2262 | support_c = 0; | |
2263 | support_C = 0; | |
2264 | while (p && *p == ';') | |
2265 | { | |
2266 | p++; | |
2267 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2268 | support_s = 1; | |
2269 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2270 | support_S = 1; | |
2271 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2272 | support_c = 1; | |
2273 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2274 | support_C = 1; | |
2275 | ||
2276 | p = strchr (p, ';'); | |
2277 | } | |
c906108c | 2278 | |
506fb367 DJ |
2279 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2280 | BUF will make packet_ok disable the packet. */ | |
2281 | if (!support_s || !support_S || !support_c || !support_C) | |
2282 | buf[0] = 0; | |
2283 | } | |
c906108c | 2284 | |
444abaca | 2285 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2286 | } |
c906108c | 2287 | |
506fb367 DJ |
2288 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2289 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2290 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2291 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2292 | signalled is given in the global INFERIOR_PTID. This function returns | |
2293 | non-zero iff it resumes the inferior. | |
44eaed12 | 2294 | |
506fb367 DJ |
2295 | This function issues a strict subset of all possible vCont commands at the |
2296 | moment. */ | |
44eaed12 | 2297 | |
506fb367 DJ |
2298 | static int |
2299 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2300 | { | |
2301 | struct remote_state *rs = get_remote_state (); | |
2302 | int pid = PIDGET (ptid); | |
2963ee1d | 2303 | char *buf = NULL, *outbuf; |
506fb367 | 2304 | struct cleanup *old_cleanup; |
44eaed12 | 2305 | |
506fb367 DJ |
2306 | buf = xmalloc (rs->remote_packet_size); |
2307 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2308 | |
444abaca | 2309 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
506fb367 | 2310 | remote_vcont_probe (rs, buf); |
44eaed12 | 2311 | |
444abaca | 2312 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
506fb367 DJ |
2313 | { |
2314 | do_cleanups (old_cleanup); | |
2315 | return 0; | |
44eaed12 C |
2316 | } |
2317 | ||
506fb367 DJ |
2318 | /* If we could generate a wider range of packets, we'd have to worry |
2319 | about overflowing BUF. Should there be a generic | |
2320 | "multi-part-packet" packet? */ | |
2321 | ||
2322 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2323 | { |
506fb367 DJ |
2324 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2325 | don't have any PID numbers the inferior will understand. Make sure | |
2326 | to only send forms that do not specify a PID. */ | |
2327 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2328 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2329 | else if (step) |
2963ee1d | 2330 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2331 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2332 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2333 | else |
2963ee1d | 2334 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2335 | } |
2336 | else if (pid == -1) | |
2337 | { | |
2338 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2339 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2340 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2341 | PIDGET (inferior_ptid)); | |
506fb367 | 2342 | else if (step) |
2963ee1d | 2343 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2344 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2345 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2346 | PIDGET (inferior_ptid)); | |
506fb367 | 2347 | else |
2963ee1d | 2348 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2349 | } |
2350 | else | |
506fb367 DJ |
2351 | { |
2352 | /* Scheduler locking; resume only PTID. */ | |
2353 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2354 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2355 | else if (step) |
2963ee1d | 2356 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2357 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2358 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2359 | else |
2963ee1d | 2360 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2361 | } |
c906108c | 2362 | |
2963ee1d DJ |
2363 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
2364 | make_cleanup (xfree, outbuf); | |
2365 | ||
2366 | putpkt (outbuf); | |
506fb367 DJ |
2367 | |
2368 | do_cleanups (old_cleanup); | |
2369 | ||
2370 | return 1; | |
c906108c | 2371 | } |
43ff13b4 | 2372 | |
506fb367 DJ |
2373 | /* Tell the remote machine to resume. */ |
2374 | ||
2375 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2376 | ||
2377 | static int last_sent_step; | |
2378 | ||
43ff13b4 | 2379 | static void |
506fb367 | 2380 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2381 | { |
d01949b6 AC |
2382 | struct remote_state *rs = get_remote_state (); |
2383 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2384 | int pid = PIDGET (ptid); |
43ff13b4 | 2385 | |
43ff13b4 JM |
2386 | last_sent_signal = siggnal; |
2387 | last_sent_step = step; | |
2388 | ||
2389 | /* A hook for when we need to do something at the last moment before | |
2390 | resumption. */ | |
9a4105ab AC |
2391 | if (deprecated_target_resume_hook) |
2392 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2393 | |
506fb367 DJ |
2394 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2395 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2396 | return; | |
2397 | ||
2398 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2399 | if (pid == -1) | |
23860348 | 2400 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2401 | else |
23860348 | 2402 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2403 | |
43ff13b4 JM |
2404 | if (siggnal != TARGET_SIGNAL_0) |
2405 | { | |
2406 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2407 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2408 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2409 | buf[3] = '\0'; |
2410 | } | |
2411 | else | |
c5aa993b | 2412 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2413 | |
44eaed12 | 2414 | putpkt (buf); |
506fb367 DJ |
2415 | } |
2416 | ||
23860348 | 2417 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2418 | static void |
2419 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2420 | { | |
2421 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2422 | |
2acceee2 JM |
2423 | /* We are about to start executing the inferior, let's register it |
2424 | with the event loop. NOTE: this is the one place where all the | |
2425 | execution commands end up. We could alternatively do this in each | |
23860348 | 2426 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2427 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2428 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2429 | NOT asynchronously. */ |
362646f5 | 2430 | if (target_can_async_p ()) |
2acceee2 | 2431 | target_async (inferior_event_handler, 0); |
23860348 | 2432 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2433 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2434 | this? Instead, should the client of target just assume (for | |
2435 | async targets) that the target is going to start executing? Is | |
2436 | this information already found in the continuation block? */ | |
ed9a39eb | 2437 | if (target_is_async_p ()) |
2acceee2 | 2438 | target_executing = 1; |
43ff13b4 | 2439 | } |
c906108c | 2440 | \f |
43ff13b4 JM |
2441 | |
2442 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2443 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2444 | static void |
fba45db2 | 2445 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2446 | { |
c5aa993b | 2447 | sigint_remote_token = |
43ff13b4 JM |
2448 | create_async_signal_handler (async_remote_interrupt, NULL); |
2449 | signal (SIGINT, handle_remote_sigint); | |
2450 | } | |
2451 | ||
23860348 | 2452 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2453 | static void |
fba45db2 | 2454 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2455 | { |
2456 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2457 | sigint_remote_twice_token = |
43ff13b4 JM |
2458 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2459 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2460 | } | |
2461 | ||
2462 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2463 | sent once. It will take effect the second time that the user sends | |
23860348 | 2464 | a ^C. */ |
43ff13b4 | 2465 | static void |
fba45db2 | 2466 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2467 | { |
2468 | signal (sig, handle_sigint); | |
c5aa993b | 2469 | sigint_remote_twice_token = |
2df3850c | 2470 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2471 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2472 | } | |
2473 | ||
6426a772 | 2474 | /* Perform the real interruption of the target execution, in response |
23860348 | 2475 | to a ^C. */ |
c5aa993b | 2476 | static void |
fba45db2 | 2477 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2478 | { |
2479 | if (remote_debug) | |
2480 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2481 | ||
2482 | target_stop (); | |
2483 | } | |
2484 | ||
2485 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2486 | up on the target alltogether. */ |
2df3850c | 2487 | void |
fba45db2 | 2488 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2489 | { |
2df3850c JM |
2490 | if (remote_debug) |
2491 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2492 | /* Do something only if the target was not killed by the previous |
23860348 | 2493 | cntl-C. */ |
6426a772 JM |
2494 | if (target_executing) |
2495 | { | |
2496 | interrupt_query (); | |
2497 | signal (SIGINT, handle_remote_sigint); | |
2498 | } | |
43ff13b4 JM |
2499 | } |
2500 | ||
2501 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2502 | stopped. */ |
6426a772 JM |
2503 | static void |
2504 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2505 | { |
2506 | signal (SIGINT, handle_sigint); | |
2507 | if (sigint_remote_twice_token) | |
23860348 MS |
2508 | delete_async_signal_handler ((struct async_signal_handler **) |
2509 | &sigint_remote_twice_token); | |
43ff13b4 | 2510 | if (sigint_remote_token) |
23860348 MS |
2511 | delete_async_signal_handler ((struct async_signal_handler **) |
2512 | &sigint_remote_token); | |
43ff13b4 JM |
2513 | } |
2514 | ||
c906108c SS |
2515 | /* Send ^C to target to halt it. Target will respond, and send us a |
2516 | packet. */ | |
507f3c78 | 2517 | static void (*ofunc) (int); |
c906108c | 2518 | |
7a292a7a SS |
2519 | /* The command line interface's stop routine. This function is installed |
2520 | as a signal handler for SIGINT. The first time a user requests a | |
2521 | stop, we call remote_stop to send a break or ^C. If there is no | |
2522 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2523 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2524 | static void |
fba45db2 | 2525 | remote_interrupt (int signo) |
c906108c | 2526 | { |
23860348 | 2527 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2528 | signal (signo, remote_interrupt_twice); |
2529 | ||
2530 | if (remote_debug) | |
0f71a2f6 | 2531 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2532 | |
2533 | target_stop (); | |
2534 | } | |
2535 | ||
2536 | /* The user typed ^C twice. */ | |
2537 | ||
2538 | static void | |
fba45db2 | 2539 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2540 | { |
2541 | signal (signo, ofunc); | |
2542 | interrupt_query (); | |
c906108c SS |
2543 | signal (signo, remote_interrupt); |
2544 | } | |
7a292a7a SS |
2545 | |
2546 | /* This is the generic stop called via the target vector. When a target | |
2547 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2548 | will eventually end up here. */ |
c906108c | 2549 | static void |
fba45db2 | 2550 | remote_stop (void) |
c906108c | 2551 | { |
7a292a7a SS |
2552 | /* Send a break or a ^C, depending on user preference. */ |
2553 | if (remote_debug) | |
0f71a2f6 | 2554 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2555 | |
7a292a7a | 2556 | if (remote_break) |
2cd58942 | 2557 | serial_send_break (remote_desc); |
c906108c | 2558 | else |
2cd58942 | 2559 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2560 | } |
2561 | ||
2562 | /* Ask the user what to do when an interrupt is received. */ | |
2563 | ||
2564 | static void | |
fba45db2 | 2565 | interrupt_query (void) |
c906108c SS |
2566 | { |
2567 | target_terminal_ours (); | |
2568 | ||
2569 | if (query ("Interrupted while waiting for the program.\n\ | |
2570 | Give up (and stop debugging it)? ")) | |
2571 | { | |
2572 | target_mourn_inferior (); | |
315a522e | 2573 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2574 | } |
2575 | ||
2576 | target_terminal_inferior (); | |
2577 | } | |
2578 | ||
6426a772 JM |
2579 | /* Enable/disable target terminal ownership. Most targets can use |
2580 | terminal groups to control terminal ownership. Remote targets are | |
2581 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2582 | is required. */ |
6426a772 JM |
2583 | |
2584 | static void | |
2585 | remote_async_terminal_inferior (void) | |
2586 | { | |
2587 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2588 | sync_execution here. This function should only be called when | |
2589 | GDB is resuming the inferior in the forground. A background | |
2590 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2591 | consequently should not call this code. */ |
6426a772 JM |
2592 | if (!sync_execution) |
2593 | return; | |
2594 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2595 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2596 | to an asynchronous target with a synchronous command calls this | |
2597 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2598 | stops trying to transfer the terminal to the target when it | |
2599 | shouldn't this guard can go away. */ | |
2600 | if (!remote_async_terminal_ours_p) | |
2601 | return; | |
2602 | delete_file_handler (input_fd); | |
2603 | remote_async_terminal_ours_p = 0; | |
2604 | initialize_sigint_signal_handler (); | |
2605 | /* NOTE: At this point we could also register our selves as the | |
2606 | recipient of all input. Any characters typed could then be | |
23860348 | 2607 | passed on down to the target. */ |
6426a772 JM |
2608 | } |
2609 | ||
2610 | static void | |
2611 | remote_async_terminal_ours (void) | |
2612 | { | |
23860348 | 2613 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2614 | if (!sync_execution) |
2615 | return; | |
23860348 | 2616 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2617 | if (remote_async_terminal_ours_p) |
2618 | return; | |
2619 | cleanup_sigint_signal_handler (NULL); | |
2620 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2621 | remote_async_terminal_ours_p = 1; | |
2622 | } | |
2623 | ||
c906108c SS |
2624 | /* If nonzero, ignore the next kill. */ |
2625 | ||
2626 | int kill_kludge; | |
2627 | ||
2628 | void | |
917317f4 | 2629 | remote_console_output (char *msg) |
c906108c SS |
2630 | { |
2631 | char *p; | |
2632 | ||
c5aa993b | 2633 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2634 | { |
2635 | char tb[2]; | |
2636 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2637 | tb[0] = c; | |
2638 | tb[1] = 0; | |
43ff13b4 | 2639 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2640 | } |
917317f4 | 2641 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2642 | } |
2643 | ||
0f71a2f6 JM |
2644 | /* Wait until the remote machine stops, then return, |
2645 | storing status in STATUS just as `wait' would. | |
802188a7 | 2646 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2647 | remote OS, is the thread-id. */ |
c906108c | 2648 | |
39f77062 KB |
2649 | static ptid_t |
2650 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2651 | { |
d01949b6 | 2652 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 2653 | char *buf = alloca (rs->remote_packet_size); |
b2dd6311 | 2654 | ULONGEST thread_num = -1; |
3c3bea1c | 2655 | ULONGEST addr; |
c906108c SS |
2656 | |
2657 | status->kind = TARGET_WAITKIND_EXITED; | |
2658 | status->value.integer = 0; | |
2659 | ||
2660 | while (1) | |
2661 | { | |
cfd77fa1 | 2662 | char *p; |
c906108c | 2663 | |
c906108c | 2664 | ofunc = signal (SIGINT, remote_interrupt); |
24b06219 | 2665 | getpkt (buf, rs->remote_packet_size, 1); |
c906108c SS |
2666 | signal (SIGINT, ofunc); |
2667 | ||
2668 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2669 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2670 | if (deprecated_target_wait_loop_hook) |
2671 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2672 | |
3c3bea1c GS |
2673 | remote_stopped_by_watchpoint_p = 0; |
2674 | ||
c906108c SS |
2675 | switch (buf[0]) |
2676 | { | |
23860348 | 2677 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2678 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 2679 | continue; |
23860348 | 2680 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2681 | remote_fileio_request (buf); |
2682 | continue; | |
23860348 | 2683 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 2684 | { |
cfd77fa1 | 2685 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 2686 | |
23860348 | 2687 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 2688 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2689 | ss = signal number |
2690 | n... = register number | |
2691 | r... = register contents | |
2692 | */ | |
c906108c SS |
2693 | p = &buf[3]; /* after Txx */ |
2694 | ||
2695 | while (*p) | |
2696 | { | |
cfd77fa1 | 2697 | char *p1; |
c906108c | 2698 | char *p_temp; |
97345198 | 2699 | int fieldsize; |
3c3bea1c GS |
2700 | LONGEST pnum = 0; |
2701 | ||
23860348 MS |
2702 | /* If the packet contains a register number save it in |
2703 | pnum and set p1 to point to the character following | |
2704 | it. Otherwise p1 points to p. */ | |
c906108c | 2705 | |
23860348 MS |
2706 | /* If this packet is an awatch packet, don't parse the |
2707 | 'a' as a register number. */ | |
3c3bea1c GS |
2708 | |
2709 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2710 | { | |
2711 | /* Read the ``P'' register number. */ | |
2712 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2713 | p1 = p_temp; |
3c3bea1c | 2714 | } |
802188a7 | 2715 | else |
3c3bea1c | 2716 | p1 = p; |
c906108c | 2717 | |
23860348 | 2718 | if (p1 == p) /* No register number present here. */ |
c906108c | 2719 | { |
cfd77fa1 | 2720 | p1 = strchr (p, ':'); |
c906108c | 2721 | if (p1 == NULL) |
8a3fe4f8 AC |
2722 | warning (_("Malformed packet(a) (missing colon): %s\n\ |
2723 | Packet: '%s'\n"), | |
c906108c | 2724 | p, buf); |
3c3bea1c | 2725 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2726 | { |
2727 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2728 | record_currthread (thread_num); | |
cfd77fa1 | 2729 | p = p_temp; |
c906108c | 2730 | } |
3c3bea1c GS |
2731 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2732 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2733 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2734 | { | |
2735 | remote_stopped_by_watchpoint_p = 1; | |
2736 | p = unpack_varlen_hex (++p1, &addr); | |
2737 | remote_watch_data_address = (CORE_ADDR)addr; | |
2738 | } | |
2739 | else | |
2740 | { | |
2741 | /* Silently skip unknown optional info. */ | |
2742 | p_temp = strchr (p1 + 1, ';'); | |
2743 | if (p_temp) | |
cfd77fa1 | 2744 | p = p_temp; |
3c3bea1c | 2745 | } |
c906108c SS |
2746 | } |
2747 | else | |
2748 | { | |
ad10f812 | 2749 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2750 | p = p1; |
2751 | ||
2752 | if (*p++ != ':') | |
8a3fe4f8 AC |
2753 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2754 | Packet: '%s'\n"), | |
3fcb8548 | 2755 | p, buf); |
c906108c | 2756 | |
ad10f812 | 2757 | if (reg == NULL) |
8a3fe4f8 AC |
2758 | error (_("Remote sent bad register number %s: %s\n\ |
2759 | Packet: '%s'\n"), | |
3fcb8548 | 2760 | phex_nz (pnum, 0), p, buf); |
c906108c | 2761 | |
cfd77fa1 | 2762 | fieldsize = hex2bin (p, regs, |
23860348 MS |
2763 | register_size (current_gdbarch, |
2764 | reg->regnum)); | |
97345198 | 2765 | p += 2 * fieldsize; |
23860348 MS |
2766 | if (fieldsize < register_size (current_gdbarch, |
2767 | reg->regnum)) | |
8a3fe4f8 | 2768 | warning (_("Remote reply is too short: %s"), buf); |
23860348 MS |
2769 | regcache_raw_supply (current_regcache, |
2770 | reg->regnum, regs); | |
c906108c SS |
2771 | } |
2772 | ||
2773 | if (*p++ != ';') | |
8a3fe4f8 | 2774 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 2775 | buf, p); |
c906108c SS |
2776 | } |
2777 | } | |
2778 | /* fall through */ | |
23860348 | 2779 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
2780 | status->kind = TARGET_WAITKIND_STOPPED; |
2781 | status->value.sig = (enum target_signal) | |
2782 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2783 | ||
0f71a2f6 JM |
2784 | if (buf[3] == 'p') |
2785 | { | |
0f71a2f6 JM |
2786 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2787 | record_currthread (thread_num); | |
2788 | } | |
c906108c | 2789 | goto got_status; |
23860348 | 2790 | case 'W': /* Target exited. */ |
c906108c SS |
2791 | { |
2792 | /* The remote process exited. */ | |
2793 | status->kind = TARGET_WAITKIND_EXITED; | |
2794 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2795 | goto got_status; | |
2796 | } | |
2797 | case 'X': | |
2798 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2799 | status->value.sig = (enum target_signal) | |
2800 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2801 | kill_kludge = 1; | |
2802 | ||
2803 | goto got_status; | |
23860348 | 2804 | case 'O': /* Console output. */ |
c906108c SS |
2805 | remote_console_output (buf + 1); |
2806 | continue; | |
2807 | case '\0': | |
2808 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2809 | { | |
2810 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2811 | the remote system doesn't support it. */ |
c906108c SS |
2812 | target_terminal_ours_for_output (); |
2813 | printf_filtered | |
2814 | ("Can't send signals to this remote system. %s not sent.\n", | |
2815 | target_signal_to_name (last_sent_signal)); | |
2816 | last_sent_signal = TARGET_SIGNAL_0; | |
2817 | target_terminal_inferior (); | |
2818 | ||
2819 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2820 | putpkt ((char *) buf); | |
2821 | continue; | |
2822 | } | |
2823 | /* else fallthrough */ | |
2824 | default: | |
8a3fe4f8 | 2825 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
2826 | continue; |
2827 | } | |
2828 | } | |
c5aa993b | 2829 | got_status: |
c906108c SS |
2830 | if (thread_num != -1) |
2831 | { | |
39f77062 | 2832 | return pid_to_ptid (thread_num); |
c906108c | 2833 | } |
39f77062 | 2834 | return inferior_ptid; |
c906108c SS |
2835 | } |
2836 | ||
23860348 | 2837 | /* Async version of remote_wait. */ |
39f77062 KB |
2838 | static ptid_t |
2839 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 2840 | { |
d01949b6 | 2841 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 2842 | char *buf = alloca (rs->remote_packet_size); |
b2dd6311 | 2843 | ULONGEST thread_num = -1; |
3c3bea1c | 2844 | ULONGEST addr; |
43ff13b4 JM |
2845 | |
2846 | status->kind = TARGET_WAITKIND_EXITED; | |
2847 | status->value.integer = 0; | |
2848 | ||
3c3bea1c GS |
2849 | remote_stopped_by_watchpoint_p = 0; |
2850 | ||
43ff13b4 JM |
2851 | while (1) |
2852 | { | |
cfd77fa1 | 2853 | char *p; |
c5aa993b | 2854 | |
ed9a39eb | 2855 | if (!target_is_async_p ()) |
43ff13b4 | 2856 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2857 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2858 | _never_ wait for ever -> test on target_is_async_p(). | |
2859 | However, before we do that we need to ensure that the caller | |
23860348 | 2860 | knows how to take the target into/out of async mode. */ |
24b06219 | 2861 | getpkt (buf, rs->remote_packet_size, wait_forever_enabled_p); |
ed9a39eb | 2862 | if (!target_is_async_p ()) |
43ff13b4 JM |
2863 | signal (SIGINT, ofunc); |
2864 | ||
2865 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2866 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2867 | if (deprecated_target_wait_loop_hook) |
2868 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
2869 | |
2870 | switch (buf[0]) | |
2871 | { | |
23860348 | 2872 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2873 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 2874 | continue; |
23860348 | 2875 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2876 | remote_fileio_request (buf); |
2877 | continue; | |
23860348 | 2878 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 2879 | { |
cfd77fa1 | 2880 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 2881 | |
23860348 | 2882 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 2883 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2884 | ss = signal number |
2885 | n... = register number | |
2886 | r... = register contents | |
2887 | */ | |
43ff13b4 JM |
2888 | p = &buf[3]; /* after Txx */ |
2889 | ||
2890 | while (*p) | |
2891 | { | |
cfd77fa1 | 2892 | char *p1; |
43ff13b4 | 2893 | char *p_temp; |
6c3f2dbf | 2894 | int fieldsize; |
3c3bea1c | 2895 | long pnum = 0; |
43ff13b4 | 2896 | |
23860348 MS |
2897 | /* If the packet contains a register number, save it |
2898 | in pnum and set p1 to point to the character | |
2899 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
2900 | |
2901 | /* If this packet is an awatch packet, don't parse the 'a' | |
2902 | as a register number. */ | |
802188a7 | 2903 | |
3c3bea1c GS |
2904 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
2905 | { | |
2906 | /* Read the register number. */ | |
2907 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2908 | p1 = p_temp; |
3c3bea1c | 2909 | } |
802188a7 | 2910 | else |
3c3bea1c | 2911 | p1 = p; |
43ff13b4 | 2912 | |
23860348 | 2913 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 2914 | { |
cfd77fa1 | 2915 | p1 = strchr (p, ':'); |
43ff13b4 | 2916 | if (p1 == NULL) |
8a3fe4f8 AC |
2917 | error (_("Malformed packet(a) (missing colon): %s\n\ |
2918 | Packet: '%s'\n"), | |
3fcb8548 | 2919 | p, buf); |
3c3bea1c | 2920 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
2921 | { |
2922 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2923 | record_currthread (thread_num); | |
cfd77fa1 | 2924 | p = p_temp; |
43ff13b4 | 2925 | } |
3c3bea1c GS |
2926 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2927 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2928 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2929 | { | |
2930 | remote_stopped_by_watchpoint_p = 1; | |
2931 | p = unpack_varlen_hex (++p1, &addr); | |
2932 | remote_watch_data_address = (CORE_ADDR)addr; | |
2933 | } | |
2934 | else | |
2935 | { | |
2936 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 2937 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
2938 | if (p_temp) |
2939 | p = p_temp; | |
2940 | } | |
43ff13b4 | 2941 | } |
802188a7 | 2942 | |
43ff13b4 JM |
2943 | else |
2944 | { | |
ad10f812 | 2945 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 2946 | p = p1; |
43ff13b4 | 2947 | if (*p++ != ':') |
8a3fe4f8 AC |
2948 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2949 | Packet: '%s'\n"), | |
3fcb8548 | 2950 | p, buf); |
43ff13b4 | 2951 | |
ad10f812 | 2952 | if (reg == NULL) |
8a3fe4f8 AC |
2953 | error (_("Remote sent bad register number %ld: %s\n\ |
2954 | Packet: '%s'\n"), | |
3fcb8548 | 2955 | pnum, p, buf); |
43ff13b4 | 2956 | |
cfd77fa1 | 2957 | fieldsize = hex2bin (p, regs, |
23860348 MS |
2958 | register_size (current_gdbarch, |
2959 | reg->regnum)); | |
6c3f2dbf | 2960 | p += 2 * fieldsize; |
23860348 MS |
2961 | if (fieldsize < register_size (current_gdbarch, |
2962 | reg->regnum)) | |
8a3fe4f8 | 2963 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 2964 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
2965 | } |
2966 | ||
2967 | if (*p++ != ';') | |
8a3fe4f8 | 2968 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 2969 | buf, p); |
43ff13b4 JM |
2970 | } |
2971 | } | |
2972 | /* fall through */ | |
23860348 | 2973 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
2974 | status->kind = TARGET_WAITKIND_STOPPED; |
2975 | status->value.sig = (enum target_signal) | |
2976 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2977 | ||
2978 | if (buf[3] == 'p') | |
2979 | { | |
43ff13b4 JM |
2980 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2981 | record_currthread (thread_num); | |
2982 | } | |
43ff13b4 | 2983 | goto got_status; |
23860348 | 2984 | case 'W': /* Target exited. */ |
43ff13b4 JM |
2985 | { |
2986 | /* The remote process exited. */ | |
2987 | status->kind = TARGET_WAITKIND_EXITED; | |
2988 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2989 | goto got_status; | |
2990 | } | |
2991 | case 'X': | |
2992 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2993 | status->value.sig = (enum target_signal) | |
2994 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2995 | kill_kludge = 1; | |
2996 | ||
2997 | goto got_status; | |
23860348 | 2998 | case 'O': /* Console output. */ |
43ff13b4 | 2999 | remote_console_output (buf + 1); |
c4093a6a | 3000 | /* Return immediately to the event loop. The event loop will |
23860348 | 3001 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3002 | status->kind = TARGET_WAITKIND_IGNORE; |
3003 | goto got_status; | |
43ff13b4 JM |
3004 | case '\0': |
3005 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3006 | { | |
3007 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3008 | the remote system doesn't support it. */ |
43ff13b4 JM |
3009 | target_terminal_ours_for_output (); |
3010 | printf_filtered | |
3011 | ("Can't send signals to this remote system. %s not sent.\n", | |
3012 | target_signal_to_name (last_sent_signal)); | |
3013 | last_sent_signal = TARGET_SIGNAL_0; | |
3014 | target_terminal_inferior (); | |
3015 | ||
3016 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3017 | putpkt ((char *) buf); | |
3018 | continue; | |
3019 | } | |
3020 | /* else fallthrough */ | |
3021 | default: | |
8a3fe4f8 | 3022 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3023 | continue; |
3024 | } | |
3025 | } | |
c5aa993b | 3026 | got_status: |
43ff13b4 JM |
3027 | if (thread_num != -1) |
3028 | { | |
39f77062 | 3029 | return pid_to_ptid (thread_num); |
43ff13b4 | 3030 | } |
39f77062 | 3031 | return inferior_ptid; |
43ff13b4 JM |
3032 | } |
3033 | ||
c906108c SS |
3034 | /* Number of bytes of registers this stub implements. */ |
3035 | ||
3036 | static int register_bytes_found; | |
3037 | ||
3038 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3039 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3040 | |
b96ec7ac AC |
3041 | static int |
3042 | fetch_register_using_p (int regnum) | |
3043 | { | |
3044 | struct remote_state *rs = get_remote_state (); | |
3045 | char *buf = alloca (rs->remote_packet_size), *p; | |
3046 | char regp[MAX_REGISTER_SIZE]; | |
3047 | int i; | |
3048 | ||
fcad0fa4 JB |
3049 | p = buf; |
3050 | *p++ = 'p'; | |
3051 | p += hexnumstr (p, regnum); | |
3052 | *p++ = '\0'; | |
b96ec7ac | 3053 | remote_send (buf, rs->remote_packet_size); |
3f9a994c JB |
3054 | |
3055 | /* If the stub didn't recognize the packet, or if we got an error, | |
3056 | tell our caller. */ | |
3057 | if (buf[0] == '\0' || buf[0] == 'E') | |
3058 | return 0; | |
3059 | ||
3060 | /* If this register is unfetchable, tell the regcache. */ | |
3061 | if (buf[0] == 'x') | |
8480adf2 | 3062 | { |
3f9a994c JB |
3063 | regcache_raw_supply (current_regcache, regnum, NULL); |
3064 | set_register_cached (regnum, -1); | |
8480adf2 | 3065 | return 1; |
b96ec7ac | 3066 | } |
b96ec7ac | 3067 | |
3f9a994c JB |
3068 | /* Otherwise, parse and supply the value. */ |
3069 | p = buf; | |
3070 | i = 0; | |
3071 | while (p[0] != 0) | |
3072 | { | |
3073 | if (p[1] == 0) | |
3074 | { | |
8a3fe4f8 | 3075 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3076 | return 0; |
3077 | } | |
3078 | ||
3079 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3080 | p += 2; | |
3081 | } | |
3082 | regcache_raw_supply (current_regcache, regnum, regp); | |
3083 | return 1; | |
b96ec7ac AC |
3084 | } |
3085 | ||
c906108c | 3086 | static void |
ad10f812 | 3087 | remote_fetch_registers (int regnum) |
c906108c | 3088 | { |
d01949b6 AC |
3089 | struct remote_state *rs = get_remote_state (); |
3090 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3091 | int i; |
3092 | char *p; | |
ad10f812 | 3093 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3094 | |
39f77062 | 3095 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3096 | |
b323314b AC |
3097 | if (regnum >= 0) |
3098 | { | |
3099 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3100 | gdb_assert (reg != NULL); | |
3101 | if (!reg->in_g_packet) | |
3102 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3103 | _("Attempt to fetch a non G-packet register when this " |
3104 | "remote.c does not support the p-packet.")); | |
b323314b | 3105 | } |
444abaca | 3106 | switch (remote_protocol_packets[PACKET_p].support) |
b96ec7ac AC |
3107 | { |
3108 | case PACKET_DISABLE: | |
3109 | break; | |
3110 | case PACKET_ENABLE: | |
3111 | if (fetch_register_using_p (regnum)) | |
3112 | return; | |
3113 | else | |
8a3fe4f8 | 3114 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3115 | case PACKET_SUPPORT_UNKNOWN: |
3116 | if (fetch_register_using_p (regnum)) | |
3117 | { | |
3118 | /* The stub recognized the 'p' packet. Remember this. */ | |
444abaca | 3119 | remote_protocol_packets[PACKET_p].support = PACKET_ENABLE; |
b96ec7ac AC |
3120 | return; |
3121 | } | |
3122 | else | |
3123 | { | |
3124 | /* The stub does not support the 'P' packet. Use 'G' | |
3125 | instead, and don't try using 'P' in the future (it | |
3126 | will just waste our time). */ | |
444abaca | 3127 | remote_protocol_packets[PACKET_p].support = PACKET_DISABLE; |
b96ec7ac AC |
3128 | break; |
3129 | } | |
3130 | } | |
b323314b | 3131 | |
c906108c | 3132 | sprintf (buf, "g"); |
24b06219 | 3133 | remote_send (buf, rs->remote_packet_size); |
c906108c | 3134 | |
11cf8741 JM |
3135 | /* Save the size of the packet sent to us by the target. Its used |
3136 | as a heuristic when determining the max size of packets that the | |
23860348 | 3137 | target can safely receive. */ |
d01949b6 AC |
3138 | if ((rs->actual_register_packet_size) == 0) |
3139 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3140 | |
3141 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3142 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3143 | |
3144 | /* We can get out of synch in various cases. If the first character | |
3145 | in the buffer is not a hex character, assume that has happened | |
3146 | and try to fetch another packet to read. */ | |
3147 | while ((buf[0] < '0' || buf[0] > '9') | |
3de11b2e | 3148 | && (buf[0] < 'A' || buf[0] > 'F') |
c906108c | 3149 | && (buf[0] < 'a' || buf[0] > 'f') |
23860348 | 3150 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3151 | { |
3152 | if (remote_debug) | |
0f71a2f6 JM |
3153 | fprintf_unfiltered (gdb_stdlog, |
3154 | "Bad register packet; fetching a new packet\n"); | |
24b06219 | 3155 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c SS |
3156 | } |
3157 | ||
3158 | /* Reply describes registers byte by byte, each byte encoded as two | |
3159 | hex characters. Suck them all up, then supply them to the | |
3160 | register cacheing/storage mechanism. */ | |
3161 | ||
3162 | p = buf; | |
ad10f812 | 3163 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3164 | { |
3165 | if (p[0] == 0) | |
3166 | break; | |
3167 | if (p[1] == 0) | |
3168 | { | |
8a3fe4f8 | 3169 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3170 | /* Don't change register_bytes_found in this case, and don't |
3171 | print a second warning. */ | |
3172 | goto supply_them; | |
3173 | } | |
3174 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3175 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3176 | else |
3177 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3178 | p += 2; | |
3179 | } | |
3180 | ||
3181 | if (i != register_bytes_found) | |
3182 | { | |
3183 | register_bytes_found = i; | |
2649061d AC |
3184 | if (REGISTER_BYTES_OK_P () |
3185 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3186 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3187 | } |
c5aa993b | 3188 | |
b323314b | 3189 | supply_them: |
ad10f812 | 3190 | { |
b323314b AC |
3191 | int i; |
3192 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3193 | { |
b323314b AC |
3194 | struct packet_reg *r = &rs->regs[i]; |
3195 | if (r->in_g_packet) | |
3196 | { | |
8ccc1287 AC |
3197 | if (r->offset * 2 >= strlen (buf)) |
3198 | /* A short packet that didn't include the register's | |
3199 | value, this implies that the register is zero (and | |
3200 | not that the register is unavailable). Supply that | |
3201 | zero value. */ | |
3202 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3203 | else if (buf[r->offset * 2] == 'x') | |
3204 | { | |
3205 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3206 | /* The register isn't available, mark it as such (at | |
3207 | the same time setting the value to zero). */ | |
3208 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3209 | set_register_cached (i, -1); | |
3210 | } | |
3211 | else | |
3212 | regcache_raw_supply (current_regcache, r->regnum, | |
3213 | regs + r->offset); | |
b323314b | 3214 | } |
ad10f812 AC |
3215 | } |
3216 | } | |
c906108c SS |
3217 | } |
3218 | ||
3219 | /* Prepare to store registers. Since we may send them all (using a | |
3220 | 'G' request), we have to read out the ones we don't want to change | |
3221 | first. */ | |
3222 | ||
c5aa993b | 3223 | static void |
fba45db2 | 3224 | remote_prepare_to_store (void) |
c906108c | 3225 | { |
cf0e1e0d DJ |
3226 | struct remote_state *rs = get_remote_state (); |
3227 | int i; | |
cfd77fa1 | 3228 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3229 | |
c906108c | 3230 | /* Make sure the entire registers array is valid. */ |
444abaca | 3231 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3232 | { |
3233 | case PACKET_DISABLE: | |
3234 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3235 | /* Make sure all the necessary registers are cached. */ |
3236 | for (i = 0; i < NUM_REGS; i++) | |
3237 | if (rs->regs[i].in_g_packet) | |
3238 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3239 | break; |
3240 | case PACKET_ENABLE: | |
3241 | break; | |
3242 | } | |
3243 | } | |
3244 | ||
ad10f812 | 3245 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3246 | packet was not recognized. */ |
5a2468f5 JM |
3247 | |
3248 | static int | |
ad10f812 | 3249 | store_register_using_P (int regnum) |
5a2468f5 | 3250 | { |
d01949b6 | 3251 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3252 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3253 | /* Try storing a single register. */ |
d01949b6 | 3254 | char *buf = alloca (rs->remote_packet_size); |
cfd77fa1 | 3255 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3256 | char *p; |
5a2468f5 | 3257 | |
ecbc58df | 3258 | xsnprintf (buf, rs->remote_packet_size, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3259 | p = buf + strlen (buf); |
822c9732 | 3260 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3261 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
ad10f812 | 3262 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3263 | |
3264 | return buf[0] != '\0'; | |
c906108c SS |
3265 | } |
3266 | ||
5a2468f5 | 3267 | |
23860348 MS |
3268 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3269 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3270 | |
3271 | static void | |
ad10f812 | 3272 | remote_store_registers (int regnum) |
c906108c | 3273 | { |
d01949b6 | 3274 | struct remote_state *rs = get_remote_state (); |
193cb69f | 3275 | char *buf; |
cfd77fa1 | 3276 | gdb_byte *regs; |
c906108c SS |
3277 | char *p; |
3278 | ||
39f77062 | 3279 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3280 | |
ad10f812 | 3281 | if (regnum >= 0) |
c906108c | 3282 | { |
444abaca | 3283 | switch (remote_protocol_packets[PACKET_P].support) |
c906108c | 3284 | { |
5a2468f5 JM |
3285 | case PACKET_DISABLE: |
3286 | break; | |
3287 | case PACKET_ENABLE: | |
ad10f812 | 3288 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3289 | return; |
3290 | else | |
8a3fe4f8 | 3291 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3292 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3293 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3294 | { |
3295 | /* The stub recognized the 'P' packet. Remember this. */ | |
444abaca | 3296 | remote_protocol_packets[PACKET_P].support = PACKET_ENABLE; |
5a2468f5 JM |
3297 | return; |
3298 | } | |
3299 | else | |
3300 | { | |
3301 | /* The stub does not support the 'P' packet. Use 'G' | |
3302 | instead, and don't try using 'P' in the future (it | |
3303 | will just waste our time). */ | |
444abaca | 3304 | remote_protocol_packets[PACKET_P].support = PACKET_DISABLE; |
5a2468f5 JM |
3305 | break; |
3306 | } | |
c906108c | 3307 | } |
c906108c SS |
3308 | } |
3309 | ||
193cb69f AC |
3310 | /* Extract all the registers in the regcache copying them into a |
3311 | local buffer. */ | |
3312 | { | |
b323314b | 3313 | int i; |
ad10f812 | 3314 | regs = alloca (rs->sizeof_g_packet); |
170cd118 | 3315 | memset (regs, 0, rs->sizeof_g_packet); |
b323314b | 3316 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3317 | { |
b323314b AC |
3318 | struct packet_reg *r = &rs->regs[i]; |
3319 | if (r->in_g_packet) | |
822c9732 | 3320 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3321 | } |
3322 | } | |
c906108c SS |
3323 | |
3324 | /* Command describes registers byte by byte, | |
3325 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3326 | buf = alloca (rs->remote_packet_size); |
3327 | p = buf; | |
3328 | *p++ = 'G'; | |
c906108c | 3329 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3330 | bin2hex (regs, p, register_bytes_found); |
24b06219 | 3331 | remote_send (buf, rs->remote_packet_size); |
c906108c | 3332 | } |
c906108c SS |
3333 | \f |
3334 | ||
3335 | /* Return the number of hex digits in num. */ | |
3336 | ||
3337 | static int | |
fba45db2 | 3338 | hexnumlen (ULONGEST num) |
c906108c SS |
3339 | { |
3340 | int i; | |
3341 | ||
3342 | for (i = 0; num != 0; i++) | |
3343 | num >>= 4; | |
3344 | ||
3345 | return max (i, 1); | |
3346 | } | |
3347 | ||
2df3850c | 3348 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3349 | |
3350 | static int | |
fba45db2 | 3351 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3352 | { |
c906108c | 3353 | int len = hexnumlen (num); |
2df3850c JM |
3354 | return hexnumnstr (buf, num, len); |
3355 | } | |
3356 | ||
c906108c | 3357 | |
2df3850c | 3358 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3359 | |
2df3850c | 3360 | static int |
fba45db2 | 3361 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3362 | { |
3363 | int i; | |
3364 | ||
3365 | buf[width] = '\0'; | |
3366 | ||
3367 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3368 | { |
c5aa993b | 3369 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3370 | num >>= 4; |
3371 | } | |
3372 | ||
2df3850c | 3373 | return width; |
c906108c SS |
3374 | } |
3375 | ||
23860348 | 3376 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3377 | |
3378 | static CORE_ADDR | |
fba45db2 | 3379 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3380 | { |
3381 | if (remote_address_size > 0 | |
3382 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3383 | { | |
3384 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3385 | in a ULONGEST variable. */ |
c906108c SS |
3386 | ULONGEST mask = 1; |
3387 | mask = (mask << remote_address_size) - 1; | |
3388 | addr &= mask; | |
3389 | } | |
3390 | return addr; | |
3391 | } | |
3392 | ||
3393 | /* Determine whether the remote target supports binary downloading. | |
3394 | This is accomplished by sending a no-op memory write of zero length | |
3395 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3396 | the whole packet, since many stubs strip the eighth bit and |
3397 | subsequently compute a wrong checksum, which causes real havoc with | |
3398 | remote_write_bytes. | |
7a292a7a | 3399 | |
96baa820 JM |
3400 | NOTE: This can still lose if the serial line is not eight-bit |
3401 | clean. In cases like this, the user should clear "remote | |
23860348 | 3402 | X-packet". */ |
96baa820 | 3403 | |
c906108c | 3404 | static void |
fba45db2 | 3405 | check_binary_download (CORE_ADDR addr) |
c906108c | 3406 | { |
d01949b6 | 3407 | struct remote_state *rs = get_remote_state (); |
24b06219 | 3408 | |
444abaca | 3409 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3410 | { |
96baa820 JM |
3411 | case PACKET_DISABLE: |
3412 | break; | |
3413 | case PACKET_ENABLE: | |
3414 | break; | |
3415 | case PACKET_SUPPORT_UNKNOWN: | |
3416 | { | |
d01949b6 | 3417 | char *buf = alloca (rs->remote_packet_size); |
96baa820 | 3418 | char *p; |
802188a7 | 3419 | |
96baa820 JM |
3420 | p = buf; |
3421 | *p++ = 'X'; | |
3422 | p += hexnumstr (p, (ULONGEST) addr); | |
3423 | *p++ = ','; | |
3424 | p += hexnumstr (p, (ULONGEST) 0); | |
3425 | *p++ = ':'; | |
3426 | *p = '\0'; | |
802188a7 | 3427 | |
96baa820 | 3428 | putpkt_binary (buf, (int) (p - buf)); |
24b06219 | 3429 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c | 3430 | |
96baa820 JM |
3431 | if (buf[0] == '\0') |
3432 | { | |
3433 | if (remote_debug) | |
3434 | fprintf_unfiltered (gdb_stdlog, | |
3435 | "binary downloading NOT suppported by target\n"); | |
444abaca | 3436 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
3437 | } |
3438 | else | |
3439 | { | |
3440 | if (remote_debug) | |
3441 | fprintf_unfiltered (gdb_stdlog, | |
3442 | "binary downloading suppported by target\n"); | |
444abaca | 3443 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
3444 | } |
3445 | break; | |
3446 | } | |
c906108c SS |
3447 | } |
3448 | } | |
3449 | ||
3450 | /* Write memory data directly to the remote machine. | |
3451 | This does not inform the data cache; the data cache uses this. | |
3452 | MEMADDR is the address in the remote memory space. | |
3453 | MYADDR is the address of the buffer in our space. | |
3454 | LEN is the number of bytes. | |
3455 | ||
917317f4 | 3456 | Returns number of bytes transferred, or 0 (setting errno) for |
23860348 | 3457 | error. Only transfer a single packet. */ |
c906108c | 3458 | |
449092f6 | 3459 | int |
cfd77fa1 | 3460 | remote_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3461 | { |
cfd77fa1 DJ |
3462 | char *buf; |
3463 | char *p; | |
3464 | char *plen; | |
c2d11a7d | 3465 | long sizeof_buf; |
917317f4 JM |
3466 | int plenlen; |
3467 | int todo; | |
3468 | int nr_bytes; | |
a257b5bb | 3469 | int payload_size; |
cfd77fa1 | 3470 | char *payload_start; |
c906108c | 3471 | |
a257b5bb | 3472 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3473 | check_binary_download (memaddr); |
3474 | ||
3de11b2e NS |
3475 | payload_size = get_memory_write_packet_size (); |
3476 | ||
a257b5bb | 3477 | /* Compute the size, and then allocate space for the largest |
3de11b2e NS |
3478 | possible packet. Include space for an extra trailing NUL. */ |
3479 | sizeof_buf = payload_size + 1; | |
c2d11a7d | 3480 | buf = alloca (sizeof_buf); |
c906108c | 3481 | |
a257b5bb | 3482 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
3483 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
3484 | */ | |
3485 | payload_size -= strlen ("$M,:#NN"); | |
3486 | payload_size -= hexnumlen (memaddr); | |
c906108c | 3487 | |
a257b5bb | 3488 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3489 | |
a257b5bb | 3490 | /* Append "[XM]". Compute a best guess of the number of bytes |
23860348 | 3491 | actually transfered. */ |
a257b5bb | 3492 | p = buf; |
444abaca | 3493 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3494 | { |
917317f4 JM |
3495 | case PACKET_ENABLE: |
3496 | *p++ = 'X'; | |
23860348 | 3497 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3498 | todo = min (len, payload_size); |
3de11b2e NS |
3499 | payload_size -= hexnumlen (todo); |
3500 | todo = min (todo, payload_size); | |
917317f4 JM |
3501 | break; |
3502 | case PACKET_DISABLE: | |
3503 | *p++ = 'M'; | |
23860348 | 3504 | /* Num bytes that will fit. */ |
a257b5bb | 3505 | todo = min (len, payload_size / 2); |
3de11b2e NS |
3506 | payload_size -= hexnumlen (todo); |
3507 | todo = min (todo, payload_size / 2); | |
917317f4 JM |
3508 | break; |
3509 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3510 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3511 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3512 | default: |
e2e0b3e5 | 3513 | internal_error (__FILE__, __LINE__, _("bad switch")); |
917317f4 | 3514 | } |
3de11b2e NS |
3515 | if (todo <= 0) |
3516 | internal_error (__FILE__, __LINE__, | |
3517 | _("minumum packet size too small to write data")); | |
802188a7 | 3518 | |
a257b5bb | 3519 | /* Append "<memaddr>". */ |
917317f4 JM |
3520 | memaddr = remote_address_masked (memaddr); |
3521 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3522 | |
3523 | /* Append ",". */ | |
917317f4 | 3524 | *p++ = ','; |
802188a7 | 3525 | |
a257b5bb AC |
3526 | /* Append <len>. Retain the location/size of <len>. It may need to |
3527 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3528 | plen = p; |
3529 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3530 | p += plenlen; | |
a257b5bb AC |
3531 | |
3532 | /* Append ":". */ | |
917317f4 JM |
3533 | *p++ = ':'; |
3534 | *p = '\0'; | |
802188a7 | 3535 | |
a257b5bb AC |
3536 | /* Append the packet body. */ |
3537 | payload_start = p; | |
444abaca | 3538 | switch (remote_protocol_packets[PACKET_X].support) |
917317f4 JM |
3539 | { |
3540 | case PACKET_ENABLE: | |
3541 | /* Binary mode. Send target system values byte by byte, in | |
3542 | increasing byte addresses. Only escape certain critical | |
3543 | characters. */ | |
3544 | for (nr_bytes = 0; | |
a257b5bb | 3545 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3546 | nr_bytes++) |
c906108c | 3547 | { |
917317f4 JM |
3548 | switch (myaddr[nr_bytes] & 0xff) |
3549 | { | |
3550 | case '$': | |
3551 | case '#': | |
3552 | case 0x7d: | |
23860348 | 3553 | /* These must be escaped. */ |
917317f4 JM |
3554 | *p++ = 0x7d; |
3555 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3556 | break; | |
3557 | default: | |
3558 | *p++ = myaddr[nr_bytes] & 0xff; | |
3559 | break; | |
3560 | } | |
c906108c | 3561 | } |
917317f4 | 3562 | if (nr_bytes < todo) |
c906108c | 3563 | { |
802188a7 | 3564 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3565 | and we have actually sent fewer bytes than planned. |
3566 | Fix-up the length field of the packet. Use the same | |
3567 | number of characters as before. */ | |
917317f4 JM |
3568 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3569 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3570 | } |
917317f4 JM |
3571 | break; |
3572 | case PACKET_DISABLE: | |
3573 | /* Normal mode: Send target system values byte by byte, in | |
3574 | increasing byte addresses. Each byte is encoded as a two hex | |
3575 | value. */ | |
2644f393 | 3576 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3577 | p += 2 * nr_bytes; |
917317f4 JM |
3578 | break; |
3579 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3580 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3581 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3582 | default: |
e2e0b3e5 | 3583 | internal_error (__FILE__, __LINE__, _("bad switch")); |
c906108c | 3584 | } |
802188a7 | 3585 | |
917317f4 | 3586 | putpkt_binary (buf, (int) (p - buf)); |
c2d11a7d | 3587 | getpkt (buf, sizeof_buf, 0); |
802188a7 | 3588 | |
917317f4 JM |
3589 | if (buf[0] == 'E') |
3590 | { | |
3591 | /* There is no correspondance between what the remote protocol | |
3592 | uses for errors and errno codes. We would like a cleaner way | |
3593 | of representing errors (big enough to include errno codes, | |
3594 | bfd_error codes, and others). But for now just return EIO. */ | |
3595 | errno = EIO; | |
3596 | return 0; | |
3597 | } | |
802188a7 | 3598 | |
23860348 MS |
3599 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
3600 | fewer bytes than we'd planned. */ | |
917317f4 | 3601 | return nr_bytes; |
c906108c SS |
3602 | } |
3603 | ||
3604 | /* Read memory data directly from the remote machine. | |
3605 | This does not use the data cache; the data cache uses this. | |
3606 | MEMADDR is the address in the remote memory space. | |
3607 | MYADDR is the address of the buffer in our space. | |
3608 | LEN is the number of bytes. | |
3609 | ||
3610 | Returns number of bytes transferred, or 0 for error. */ | |
3611 | ||
917317f4 JM |
3612 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3613 | remote targets) shouldn't attempt to read the entire buffer. | |
3614 | Instead it should read a single packet worth of data and then | |
3615 | return the byte size of that packet to the caller. The caller (its | |
3616 | caller and its callers caller ;-) already contains code for | |
23860348 | 3617 | handling partial reads. */ |
917317f4 | 3618 | |
449092f6 | 3619 | int |
cfd77fa1 | 3620 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3621 | { |
11cf8741 | 3622 | char *buf; |
23860348 | 3623 | int max_buf_size; /* Max size of packet output buffer. */ |
c2d11a7d | 3624 | long sizeof_buf; |
c906108c SS |
3625 | int origlen; |
3626 | ||
23860348 | 3627 | /* Create a buffer big enough for this packet. */ |
11cf8741 | 3628 | max_buf_size = get_memory_read_packet_size (); |
23860348 | 3629 | sizeof_buf = max_buf_size + 1; /* Space for trailing NULL. */ |
c2d11a7d | 3630 | buf = alloca (sizeof_buf); |
c906108c SS |
3631 | |
3632 | origlen = len; | |
3633 | while (len > 0) | |
3634 | { | |
c906108c SS |
3635 | char *p; |
3636 | int todo; | |
3637 | int i; | |
3638 | ||
c5aa993b | 3639 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3640 | |
3641 | /* construct "m"<memaddr>","<len>" */ | |
3642 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3643 | memaddr = remote_address_masked (memaddr); | |
3644 | p = buf; | |
3645 | *p++ = 'm'; | |
3646 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3647 | *p++ = ','; | |
3648 | p += hexnumstr (p, (ULONGEST) todo); | |
3649 | *p = '\0'; | |
3650 | ||
3651 | putpkt (buf); | |
c2d11a7d | 3652 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3653 | |
66504d44 MS |
3654 | if (buf[0] == 'E' |
3655 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3656 | && buf[3] == '\0') | |
c906108c | 3657 | { |
23860348 MS |
3658 | /* There is no correspondance between what the remote |
3659 | protocol uses for errors and errno codes. We would like | |
3660 | a cleaner way of representing errors (big enough to | |
3661 | include errno codes, bfd_error codes, and others). But | |
3662 | for now just return EIO. */ | |
c906108c SS |
3663 | errno = EIO; |
3664 | return 0; | |
3665 | } | |
3666 | ||
c5aa993b JM |
3667 | /* Reply describes memory byte by byte, |
3668 | each byte encoded as two hex characters. */ | |
c906108c SS |
3669 | |
3670 | p = buf; | |
30559e10 | 3671 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3672 | { |
30559e10 | 3673 | /* Reply is short. This means that we were able to read |
23860348 | 3674 | only part of what we wanted to. */ |
30559e10 | 3675 | return i + (origlen - len); |
c906108c SS |
3676 | } |
3677 | myaddr += todo; | |
3678 | memaddr += todo; | |
3679 | len -= todo; | |
3680 | } | |
3681 | return origlen; | |
3682 | } | |
3683 | \f | |
3684 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
3685 | transferring to or from debugger address BUFFER. Write to inferior |
3686 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
3687 | read; 0 for error. TARGET is unused. */ | |
392a587b | 3688 | |
c906108c | 3689 | static int |
961cb7b5 | 3690 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 3691 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3692 | struct target_ops *target) |
c906108c | 3693 | { |
392a587b JM |
3694 | CORE_ADDR targ_addr; |
3695 | int targ_len; | |
4930751a C |
3696 | int res; |
3697 | ||
f6684c31 | 3698 | /* Should this be the selected frame? */ |
23860348 MS |
3699 | gdbarch_remote_translate_xfer_address (current_gdbarch, |
3700 | current_regcache, | |
f6684c31 AC |
3701 | mem_addr, mem_len, |
3702 | &targ_addr, &targ_len); | |
392a587b | 3703 | if (targ_len <= 0) |
c906108c | 3704 | return 0; |
c906108c | 3705 | |
4930751a C |
3706 | if (should_write) |
3707 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3708 | else | |
3709 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3710 | ||
3711 | return res; | |
c906108c SS |
3712 | } |
3713 | ||
c906108c | 3714 | static void |
fba45db2 | 3715 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3716 | { |
3717 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3718 | } | |
3719 | \f | |
3720 | /* Stuff for dealing with the packets which are part of this protocol. | |
3721 | See comment at top of file for details. */ | |
3722 | ||
23860348 MS |
3723 | /* Read a single character from the remote end, masking it down to 7 |
3724 | bits. */ | |
c906108c SS |
3725 | |
3726 | static int | |
fba45db2 | 3727 | readchar (int timeout) |
c906108c SS |
3728 | { |
3729 | int ch; | |
3730 | ||
2cd58942 | 3731 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3732 | |
2acceee2 JM |
3733 | if (ch >= 0) |
3734 | return (ch & 0x7f); | |
3735 | ||
3736 | switch ((enum serial_rc) ch) | |
c906108c SS |
3737 | { |
3738 | case SERIAL_EOF: | |
2acceee2 | 3739 | target_mourn_inferior (); |
8a3fe4f8 | 3740 | error (_("Remote connection closed")); |
2acceee2 | 3741 | /* no return */ |
c906108c | 3742 | case SERIAL_ERROR: |
e2e0b3e5 | 3743 | perror_with_name (_("Remote communication error")); |
2acceee2 | 3744 | /* no return */ |
c906108c | 3745 | case SERIAL_TIMEOUT: |
2acceee2 | 3746 | break; |
c906108c | 3747 | } |
2acceee2 | 3748 | return ch; |
c906108c SS |
3749 | } |
3750 | ||
3751 | /* Send the command in BUF to the remote machine, and read the reply | |
3752 | into BUF. Report an error if we get an error reply. */ | |
3753 | ||
3754 | static void | |
c2d11a7d JM |
3755 | remote_send (char *buf, |
3756 | long sizeof_buf) | |
c906108c SS |
3757 | { |
3758 | putpkt (buf); | |
c2d11a7d | 3759 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3760 | |
3761 | if (buf[0] == 'E') | |
8a3fe4f8 | 3762 | error (_("Remote failure reply: %s"), buf); |
c906108c SS |
3763 | } |
3764 | ||
3765 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3766 | string notation. */ | |
3767 | ||
3768 | static void | |
fba45db2 | 3769 | print_packet (char *buf) |
c906108c SS |
3770 | { |
3771 | puts_filtered ("\""); | |
43e526b9 | 3772 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3773 | puts_filtered ("\""); |
3774 | } | |
3775 | ||
3776 | int | |
fba45db2 | 3777 | putpkt (char *buf) |
c906108c SS |
3778 | { |
3779 | return putpkt_binary (buf, strlen (buf)); | |
3780 | } | |
3781 | ||
3782 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 3783 | of the packet is in BUF. The string in BUF can be at most |
24b06219 | 3784 | RS->remote_packet_size - 5 to account for the $, # and checksum, |
23860348 MS |
3785 | and for a possible /0 if we are debugging (remote_debug) and want |
3786 | to print the sent packet as a string. */ | |
c906108c SS |
3787 | |
3788 | static int | |
fba45db2 | 3789 | putpkt_binary (char *buf, int cnt) |
c906108c | 3790 | { |
d01949b6 | 3791 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3792 | int i; |
3793 | unsigned char csum = 0; | |
11cf8741 | 3794 | char *buf2 = alloca (cnt + 6); |
24b06219 | 3795 | long sizeof_junkbuf = rs->remote_packet_size; |
c2d11a7d | 3796 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 3797 | |
c906108c SS |
3798 | int ch; |
3799 | int tcount = 0; | |
3800 | char *p; | |
3801 | ||
3802 | /* Copy the packet into buffer BUF2, encapsulating it | |
3803 | and giving it a checksum. */ | |
3804 | ||
c906108c SS |
3805 | p = buf2; |
3806 | *p++ = '$'; | |
3807 | ||
3808 | for (i = 0; i < cnt; i++) | |
3809 | { | |
3810 | csum += buf[i]; | |
3811 | *p++ = buf[i]; | |
3812 | } | |
3813 | *p++ = '#'; | |
3814 | *p++ = tohex ((csum >> 4) & 0xf); | |
3815 | *p++ = tohex (csum & 0xf); | |
3816 | ||
3817 | /* Send it over and over until we get a positive ack. */ | |
3818 | ||
3819 | while (1) | |
3820 | { | |
3821 | int started_error_output = 0; | |
3822 | ||
3823 | if (remote_debug) | |
3824 | { | |
3825 | *p = '\0'; | |
43e526b9 JM |
3826 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3827 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3828 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3829 | gdb_flush (gdb_stdlog); |
c906108c | 3830 | } |
2cd58942 | 3831 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 3832 | perror_with_name (_("putpkt: write failed")); |
c906108c | 3833 | |
23860348 | 3834 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
3835 | while (1) |
3836 | { | |
3837 | ch = readchar (remote_timeout); | |
3838 | ||
c5aa993b | 3839 | if (remote_debug) |
c906108c SS |
3840 | { |
3841 | switch (ch) | |
3842 | { | |
3843 | case '+': | |
1216fa2c | 3844 | case '-': |
c906108c SS |
3845 | case SERIAL_TIMEOUT: |
3846 | case '$': | |
3847 | if (started_error_output) | |
3848 | { | |
3849 | putchar_unfiltered ('\n'); | |
3850 | started_error_output = 0; | |
3851 | } | |
3852 | } | |
3853 | } | |
3854 | ||
3855 | switch (ch) | |
3856 | { | |
3857 | case '+': | |
3858 | if (remote_debug) | |
0f71a2f6 | 3859 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3860 | return 1; |
1216fa2c AC |
3861 | case '-': |
3862 | if (remote_debug) | |
3863 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3864 | case SERIAL_TIMEOUT: |
c5aa993b | 3865 | tcount++; |
c906108c SS |
3866 | if (tcount > 3) |
3867 | return 0; | |
23860348 | 3868 | break; /* Retransmit buffer. */ |
c906108c SS |
3869 | case '$': |
3870 | { | |
40e3f985 | 3871 | if (remote_debug) |
23860348 MS |
3872 | fprintf_unfiltered (gdb_stdlog, |
3873 | "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
3874 | /* It's probably an old response sent because an ACK |
3875 | was lost. Gobble up the packet and ack it so it | |
3876 | doesn't get retransmitted when we resend this | |
3877 | packet. */ | |
40e3f985 | 3878 | read_frame (junkbuf, sizeof_junkbuf); |
d6f7abdf | 3879 | serial_write (remote_desc, "+", 1); |
23860348 | 3880 | continue; /* Now, go look for +. */ |
c906108c SS |
3881 | } |
3882 | default: | |
3883 | if (remote_debug) | |
3884 | { | |
3885 | if (!started_error_output) | |
3886 | { | |
3887 | started_error_output = 1; | |
0f71a2f6 | 3888 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3889 | } |
0f71a2f6 | 3890 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3891 | } |
3892 | continue; | |
3893 | } | |
23860348 | 3894 | break; /* Here to retransmit. */ |
c906108c SS |
3895 | } |
3896 | ||
3897 | #if 0 | |
3898 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3899 | able to get out next time we call QUIT, without anything as |
3900 | violent as interrupt_query. If we want to provide a way out of | |
3901 | here without getting to the next QUIT, it should be based on | |
3902 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3903 | if (quit_flag) |
3904 | { | |
3905 | quit_flag = 0; | |
3906 | interrupt_query (); | |
3907 | } | |
3908 | #endif | |
3909 | } | |
3910 | } | |
3911 | ||
3912 | /* Come here after finding the start of the frame. Collect the rest | |
3913 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
3914 | compression. No more than sizeof_buf-1 characters are read so that |
3915 | the buffer can be NUL terminated. | |
c906108c | 3916 | |
c2d11a7d JM |
3917 | Returns -1 on error, number of characters in buffer (ignoring the |
3918 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 3919 | SERIAL status indications). */ |
c2d11a7d JM |
3920 | |
3921 | static long | |
3922 | read_frame (char *buf, | |
3923 | long sizeof_buf) | |
c906108c SS |
3924 | { |
3925 | unsigned char csum; | |
c2d11a7d | 3926 | long bc; |
c906108c SS |
3927 | int c; |
3928 | ||
3929 | csum = 0; | |
c2d11a7d | 3930 | bc = 0; |
c906108c SS |
3931 | |
3932 | while (1) | |
3933 | { | |
23860348 | 3934 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NULL. */ |
c906108c | 3935 | c = readchar (remote_timeout); |
c906108c SS |
3936 | switch (c) |
3937 | { | |
3938 | case SERIAL_TIMEOUT: | |
3939 | if (remote_debug) | |
0f71a2f6 | 3940 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 3941 | return -1; |
c906108c SS |
3942 | case '$': |
3943 | if (remote_debug) | |
0f71a2f6 JM |
3944 | fputs_filtered ("Saw new packet start in middle of old one\n", |
3945 | gdb_stdlog); | |
23860348 | 3946 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
3947 | case '#': |
3948 | { | |
3949 | unsigned char pktcsum; | |
e1b09194 AC |
3950 | int check_0 = 0; |
3951 | int check_1 = 0; | |
c906108c | 3952 | |
c2d11a7d | 3953 | buf[bc] = '\0'; |
c906108c | 3954 | |
e1b09194 AC |
3955 | check_0 = readchar (remote_timeout); |
3956 | if (check_0 >= 0) | |
3957 | check_1 = readchar (remote_timeout); | |
802188a7 | 3958 | |
e1b09194 AC |
3959 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
3960 | { | |
3961 | if (remote_debug) | |
23860348 MS |
3962 | fputs_filtered ("Timeout in checksum, retrying\n", |
3963 | gdb_stdlog); | |
e1b09194 AC |
3964 | return -1; |
3965 | } | |
3966 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
3967 | { |
3968 | if (remote_debug) | |
23860348 MS |
3969 | fputs_filtered ("Communication error in checksum\n", |
3970 | gdb_stdlog); | |
40e3f985 FN |
3971 | return -1; |
3972 | } | |
c906108c | 3973 | |
e1b09194 | 3974 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 3975 | if (csum == pktcsum) |
c2d11a7d | 3976 | return bc; |
c906108c | 3977 | |
c5aa993b | 3978 | if (remote_debug) |
c906108c | 3979 | { |
0f71a2f6 | 3980 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 3981 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
3982 | pktcsum, csum); |
3983 | fputs_filtered (buf, gdb_stdlog); | |
3984 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 3985 | } |
c2d11a7d | 3986 | /* Number of characters in buffer ignoring trailing |
23860348 | 3987 | NULL. */ |
c2d11a7d | 3988 | return -1; |
c906108c | 3989 | } |
23860348 | 3990 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
3991 | { |
3992 | int repeat; | |
3993 | csum += c; | |
c906108c | 3994 | |
b4501125 AC |
3995 | c = readchar (remote_timeout); |
3996 | csum += c; | |
23860348 | 3997 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 3998 | |
23860348 | 3999 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4000 | |
802188a7 | 4001 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4002 | && bc > 0 |
fb6e5c55 | 4003 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4004 | { |
c2d11a7d JM |
4005 | memset (&buf[bc], buf[bc - 1], repeat); |
4006 | bc += repeat; | |
c2c6d25f JM |
4007 | continue; |
4008 | } | |
4009 | ||
c2d11a7d | 4010 | buf[bc] = '\0'; |
a3f17187 | 4011 | printf_filtered (_("Repeat count %d too large for buffer: "), |
23860348 | 4012 | repeat); |
c2c6d25f JM |
4013 | puts_filtered (buf); |
4014 | puts_filtered ("\n"); | |
c2d11a7d | 4015 | return -1; |
c2c6d25f | 4016 | } |
c906108c | 4017 | default: |
c2d11a7d | 4018 | if (bc < sizeof_buf - 1) |
c906108c | 4019 | { |
c2d11a7d | 4020 | buf[bc++] = c; |
c906108c SS |
4021 | csum += c; |
4022 | continue; | |
4023 | } | |
4024 | ||
c2d11a7d | 4025 | buf[bc] = '\0'; |
c906108c SS |
4026 | puts_filtered ("Remote packet too long: "); |
4027 | puts_filtered (buf); | |
4028 | puts_filtered ("\n"); | |
4029 | ||
c2d11a7d | 4030 | return -1; |
c906108c SS |
4031 | } |
4032 | } | |
4033 | } | |
4034 | ||
4035 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4036 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4037 | this is used (in synchronous mode) to wait for a target that is is | |
4038 | executing user code to stop. */ | |
d9fcf2fb JM |
4039 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4040 | don't have to change all the calls to getpkt to deal with the | |
4041 | return value, because at the moment I don't know what the right | |
23860348 | 4042 | thing to do it for those. */ |
c906108c | 4043 | void |
c2d11a7d JM |
4044 | getpkt (char *buf, |
4045 | long sizeof_buf, | |
4046 | int forever) | |
d9fcf2fb JM |
4047 | { |
4048 | int timed_out; | |
4049 | ||
4050 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4051 | } | |
4052 | ||
4053 | ||
4054 | /* Read a packet from the remote machine, with error checking, and | |
4055 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4056 | this is used (in synchronous mode) to wait for a target that is is | |
4057 | executing user code to stop. If FOREVER == 0, this function is | |
4058 | allowed to time out gracefully and return an indication of this to | |
23860348 | 4059 | the caller. */ |
3172dc30 | 4060 | static int |
d9fcf2fb JM |
4061 | getpkt_sane (char *buf, |
4062 | long sizeof_buf, | |
4063 | int forever) | |
c906108c SS |
4064 | { |
4065 | int c; | |
4066 | int tries; | |
4067 | int timeout; | |
4068 | int val; | |
4069 | ||
c5aa993b | 4070 | strcpy (buf, "timeout"); |
c906108c SS |
4071 | |
4072 | if (forever) | |
4073 | { | |
c906108c | 4074 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4075 | } |
4076 | ||
4077 | else | |
4078 | timeout = remote_timeout; | |
4079 | ||
4080 | #define MAX_TRIES 3 | |
4081 | ||
4082 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4083 | { | |
4084 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4085 | continuously, but if it pauses, we'll get a zero from |
4086 | readchar because of timeout. Then we'll count that as a | |
4087 | retry. */ | |
c906108c | 4088 | |
23860348 MS |
4089 | /* Note that we will only wait forever prior to the start of a |
4090 | packet. After that, we expect characters to arrive at a | |
4091 | brisk pace. They should show up within remote_timeout | |
4092 | intervals. */ | |
c906108c SS |
4093 | |
4094 | do | |
4095 | { | |
4096 | c = readchar (timeout); | |
4097 | ||
4098 | if (c == SERIAL_TIMEOUT) | |
4099 | { | |
23860348 | 4100 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4101 | { |
2acceee2 | 4102 | QUIT; |
c906108c | 4103 | target_mourn_inferior (); |
8a3fe4f8 | 4104 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4105 | } |
c906108c | 4106 | if (remote_debug) |
0f71a2f6 | 4107 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4108 | goto retry; |
4109 | } | |
4110 | } | |
4111 | while (c != '$'); | |
4112 | ||
4113 | /* We've found the start of a packet, now collect the data. */ | |
4114 | ||
c2d11a7d | 4115 | val = read_frame (buf, sizeof_buf); |
c906108c | 4116 | |
c2d11a7d | 4117 | if (val >= 0) |
c906108c SS |
4118 | { |
4119 | if (remote_debug) | |
43e526b9 JM |
4120 | { |
4121 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4122 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4123 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4124 | } | |
2cd58942 | 4125 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4126 | return 0; |
c906108c SS |
4127 | } |
4128 | ||
4129 | /* Try the whole thing again. */ | |
4130 | retry: | |
2cd58942 | 4131 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4132 | } |
4133 | ||
23860348 MS |
4134 | /* We have tried hard enough, and just can't receive the packet. |
4135 | Give up. */ | |
c906108c | 4136 | |
a3f17187 | 4137 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4138 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4139 | return 1; |
c906108c SS |
4140 | } |
4141 | \f | |
4142 | static void | |
fba45db2 | 4143 | remote_kill (void) |
c906108c SS |
4144 | { |
4145 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4146 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4147 | if (kill_kludge) | |
4148 | { | |
4149 | kill_kludge = 0; | |
4150 | target_mourn_inferior (); | |
4151 | return; | |
4152 | } | |
4153 | ||
4154 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4155 | speaking terms with the remote system. */ | |
c5aa993b | 4156 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4157 | |
4158 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4159 | we do or not. For the existing stubs, kill is a noop. */ | |
4160 | target_mourn_inferior (); | |
4161 | } | |
4162 | ||
23860348 | 4163 | /* Async version of remote_kill. */ |
43ff13b4 | 4164 | static void |
fba45db2 | 4165 | remote_async_kill (void) |
43ff13b4 | 4166 | { |
23860348 | 4167 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4168 | if (target_is_async_p ()) |
2cd58942 | 4169 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4170 | |
4171 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4172 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4173 | if (kill_kludge) | |
4174 | { | |
4175 | kill_kludge = 0; | |
4176 | target_mourn_inferior (); | |
4177 | return; | |
4178 | } | |
4179 | ||
23860348 MS |
4180 | /* Use catch_errors so the user can quit from gdb even when we |
4181 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4182 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4183 | |
4184 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4185 | we do or not. For the existing stubs, kill is a noop. */ | |
4186 | target_mourn_inferior (); | |
4187 | } | |
4188 | ||
c906108c | 4189 | static void |
fba45db2 | 4190 | remote_mourn (void) |
c906108c SS |
4191 | { |
4192 | remote_mourn_1 (&remote_ops); | |
4193 | } | |
4194 | ||
53a5351d | 4195 | static void |
fba45db2 | 4196 | remote_async_mourn (void) |
53a5351d JM |
4197 | { |
4198 | remote_mourn_1 (&remote_async_ops); | |
4199 | } | |
4200 | ||
c906108c | 4201 | static void |
fba45db2 | 4202 | extended_remote_mourn (void) |
c906108c SS |
4203 | { |
4204 | /* We do _not_ want to mourn the target like this; this will | |
4205 | remove the extended remote target from the target stack, | |
802188a7 | 4206 | and the next time the user says "run" it'll fail. |
c906108c SS |
4207 | |
4208 | FIXME: What is the right thing to do here? */ | |
4209 | #if 0 | |
4210 | remote_mourn_1 (&extended_remote_ops); | |
4211 | #endif | |
4212 | } | |
4213 | ||
4214 | /* Worker function for remote_mourn. */ | |
4215 | static void | |
fba45db2 | 4216 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4217 | { |
4218 | unpush_target (target); | |
4219 | generic_mourn_inferior (); | |
4220 | } | |
4221 | ||
4222 | /* In the extended protocol we want to be able to do things like | |
4223 | "run" and have them basically work as expected. So we need | |
802188a7 | 4224 | a special create_inferior function. |
c906108c SS |
4225 | |
4226 | FIXME: One day add support for changing the exec file | |
4227 | we're debugging, arguments and an environment. */ | |
4228 | ||
4229 | static void | |
23860348 MS |
4230 | extended_remote_create_inferior (char *exec_file, char *args, |
4231 | char **env, int from_tty) | |
c906108c SS |
4232 | { |
4233 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4234 | the remote server. */ | |
4235 | remove_breakpoints (); | |
4236 | ||
4237 | /* Now restart the remote server. */ | |
4238 | extended_remote_restart (); | |
4239 | ||
4240 | /* Now put the breakpoints back in. This way we're safe if the | |
4241 | restart function works via a unix fork on the remote side. */ | |
4242 | insert_breakpoints (); | |
4243 | ||
4244 | /* Clean up from the last time we were running. */ | |
4245 | clear_proceed_status (); | |
c906108c SS |
4246 | } |
4247 | ||
23860348 | 4248 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4249 | static void |
23860348 MS |
4250 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4251 | char **env, int from_tty) | |
43ff13b4 JM |
4252 | { |
4253 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4254 | the remote server. */ | |
4255 | remove_breakpoints (); | |
4256 | ||
4257 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4258 | with the event loop. */ |
362646f5 | 4259 | if (target_can_async_p ()) |
2acceee2 | 4260 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4261 | |
4262 | /* Now restart the remote server. */ | |
4263 | extended_remote_restart (); | |
4264 | ||
4265 | /* Now put the breakpoints back in. This way we're safe if the | |
4266 | restart function works via a unix fork on the remote side. */ | |
4267 | insert_breakpoints (); | |
4268 | ||
4269 | /* Clean up from the last time we were running. */ | |
4270 | clear_proceed_status (); | |
43ff13b4 | 4271 | } |
c906108c | 4272 | \f |
c5aa993b | 4273 | |
aaab4dba | 4274 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4275 | instruction than other targets; in those use |
4276 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4277 | Also, bi-endian targets may define | |
4278 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4279 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4280 | just call the standard routines that are in mem-break.c. */ | |
4281 | ||
4282 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4283 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4284 | the ARCH-OS-tdep.c code can override the default. */ | |
4285 | ||
4286 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4287 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4288 | #endif |
4289 | ||
7fec2c59 | 4290 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4291 | |
4292 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4293 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4294 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4295 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4296 | #endif |
4297 | ||
7fec2c59 AC |
4298 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4299 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4300 | |
7fec2c59 | 4301 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4302 | |
aaab4dba AC |
4303 | /* Insert a breakpoint on targets that don't have any better |
4304 | breakpoint support. We read the contents of the target location | |
4305 | and stash it, then overwrite it with a breakpoint instruction. | |
4306 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4307 | is a pointer to memory allocated for saving the target contents. | |
4308 | It is guaranteed by the caller to be long enough to save the number | |
4309 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4310 | |
4311 | static int | |
5a168c78 | 4312 | remote_insert_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache) |
c906108c | 4313 | { |
d01949b6 | 4314 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4315 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4316 | int val; |
802188a7 | 4317 | #endif |
96baa820 JM |
4318 | int bp_size; |
4319 | ||
d471ea57 AC |
4320 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4321 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4322 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4323 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4324 | |
444abaca | 4325 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4326 | { |
d01949b6 | 4327 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4328 | char *p = buf; |
802188a7 | 4329 | |
0caabb7e | 4330 | addr = remote_address_masked (addr); |
96baa820 JM |
4331 | *(p++) = 'Z'; |
4332 | *(p++) = '0'; | |
4333 | *(p++) = ','; | |
0caabb7e AC |
4334 | p += hexnumstr (p, (ULONGEST) addr); |
4335 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4336 | sprintf (p, ",%d", bp_size); |
802188a7 | 4337 | |
96baa820 | 4338 | putpkt (buf); |
24b06219 | 4339 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 | 4340 | |
444abaca | 4341 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 4342 | { |
d471ea57 AC |
4343 | case PACKET_ERROR: |
4344 | return -1; | |
4345 | case PACKET_OK: | |
4346 | return 0; | |
4347 | case PACKET_UNKNOWN: | |
4348 | break; | |
96baa820 JM |
4349 | } |
4350 | } | |
c906108c | 4351 | |
802188a7 | 4352 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4353 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4354 | ||
4355 | if (val == 0) | |
4356 | { | |
d7449b42 | 4357 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4358 | val = target_write_memory (addr, (char *) big_break_insn, |
4359 | sizeof big_break_insn); | |
4360 | else | |
4361 | val = target_write_memory (addr, (char *) little_break_insn, | |
4362 | sizeof little_break_insn); | |
4363 | } | |
4364 | ||
4365 | return val; | |
4366 | #else | |
4367 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4368 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4369 | } |
4370 | ||
4371 | static int | |
5a168c78 | 4372 | remote_remove_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache) |
c906108c | 4373 | { |
d01949b6 | 4374 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4375 | int bp_size; |
4376 | ||
444abaca | 4377 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4378 | { |
d01949b6 | 4379 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4380 | char *p = buf; |
802188a7 | 4381 | |
96baa820 JM |
4382 | *(p++) = 'z'; |
4383 | *(p++) = '0'; | |
4384 | *(p++) = ','; | |
4385 | ||
0caabb7e AC |
4386 | addr = remote_address_masked (addr); |
4387 | p += hexnumstr (p, (ULONGEST) addr); | |
4388 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4389 | sprintf (p, ",%d", bp_size); |
802188a7 | 4390 | |
96baa820 | 4391 | putpkt (buf); |
24b06219 | 4392 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 JM |
4393 | |
4394 | return (buf[0] == 'E'); | |
4395 | } | |
4396 | ||
7fec2c59 | 4397 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4398 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4399 | #else | |
4400 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4401 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4402 | } |
4403 | ||
d471ea57 AC |
4404 | static int |
4405 | watchpoint_to_Z_packet (int type) | |
4406 | { | |
4407 | switch (type) | |
4408 | { | |
4409 | case hw_write: | |
4410 | return 2; | |
4411 | break; | |
4412 | case hw_read: | |
4413 | return 3; | |
4414 | break; | |
4415 | case hw_access: | |
4416 | return 4; | |
4417 | break; | |
4418 | default: | |
8e65ff28 | 4419 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4420 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
4421 | } |
4422 | } | |
4423 | ||
3c3bea1c | 4424 | static int |
fba45db2 | 4425 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4426 | { |
d01949b6 AC |
4427 | struct remote_state *rs = get_remote_state (); |
4428 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4429 | char *p; |
d471ea57 | 4430 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4431 | |
444abaca | 4432 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
8a3fe4f8 | 4433 | error (_("Can't set hardware watchpoints without the '%s' (%s) packet."), |
444abaca DJ |
4434 | remote_protocol_packets[PACKET_Z0 + packet].name, |
4435 | remote_protocol_packets[PACKET_Z0 + packet].title); | |
802188a7 | 4436 | |
d471ea57 | 4437 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4438 | p = strchr (buf, '\0'); |
4439 | addr = remote_address_masked (addr); | |
4440 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4441 | sprintf (p, ",%x", len); |
802188a7 | 4442 | |
96baa820 | 4443 | putpkt (buf); |
24b06219 | 4444 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 | 4445 | |
444abaca | 4446 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4447 | { |
4448 | case PACKET_ERROR: | |
4449 | case PACKET_UNKNOWN: | |
4450 | return -1; | |
4451 | case PACKET_OK: | |
4452 | return 0; | |
4453 | } | |
8e65ff28 | 4454 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4455 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
4456 | } |
4457 | ||
d471ea57 | 4458 | |
3c3bea1c | 4459 | static int |
fba45db2 | 4460 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4461 | { |
d01949b6 AC |
4462 | struct remote_state *rs = get_remote_state (); |
4463 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4464 | char *p; |
d471ea57 AC |
4465 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4466 | ||
444abaca | 4467 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
8a3fe4f8 | 4468 | error (_("Can't clear hardware watchpoints without the '%s' (%s) packet."), |
444abaca DJ |
4469 | remote_protocol_packets[PACKET_Z0 + packet].name, |
4470 | remote_protocol_packets[PACKET_Z0 + packet].title); | |
802188a7 | 4471 | |
d471ea57 | 4472 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4473 | p = strchr (buf, '\0'); |
4474 | addr = remote_address_masked (addr); | |
4475 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4476 | sprintf (p, ",%x", len); |
96baa820 | 4477 | putpkt (buf); |
24b06219 | 4478 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 | 4479 | |
444abaca | 4480 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4481 | { |
4482 | case PACKET_ERROR: | |
4483 | case PACKET_UNKNOWN: | |
4484 | return -1; | |
4485 | case PACKET_OK: | |
4486 | return 0; | |
4487 | } | |
8e65ff28 | 4488 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4489 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
4490 | } |
4491 | ||
3c3bea1c | 4492 | |
501eef12 AC |
4493 | int remote_hw_watchpoint_limit = -1; |
4494 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4495 | |
b9362cc7 | 4496 | static int |
3c3bea1c | 4497 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4498 | { |
3c3bea1c GS |
4499 | if (type == bp_hardware_breakpoint) |
4500 | { | |
4501 | if (remote_hw_breakpoint_limit == 0) | |
4502 | return 0; | |
501eef12 AC |
4503 | else if (remote_hw_breakpoint_limit < 0) |
4504 | return 1; | |
3c3bea1c GS |
4505 | else if (cnt <= remote_hw_breakpoint_limit) |
4506 | return 1; | |
4507 | } | |
4508 | else | |
4509 | { | |
4510 | if (remote_hw_watchpoint_limit == 0) | |
4511 | return 0; | |
501eef12 AC |
4512 | else if (remote_hw_watchpoint_limit < 0) |
4513 | return 1; | |
3c3bea1c GS |
4514 | else if (ot) |
4515 | return -1; | |
4516 | else if (cnt <= remote_hw_watchpoint_limit) | |
4517 | return 1; | |
4518 | } | |
4519 | return -1; | |
4520 | } | |
4521 | ||
b9362cc7 | 4522 | static int |
3c3bea1c GS |
4523 | remote_stopped_by_watchpoint (void) |
4524 | { | |
4525 | return remote_stopped_by_watchpoint_p; | |
4526 | } | |
4527 | ||
7270d8f2 OF |
4528 | extern int stepped_after_stopped_by_watchpoint; |
4529 | ||
4aa7a7f5 JJ |
4530 | static int |
4531 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4532 | { |
4aa7a7f5 | 4533 | int rc = 0; |
7270d8f2 OF |
4534 | if (remote_stopped_by_watchpoint () |
4535 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4536 | { |
4537 | *addr_p = remote_watch_data_address; | |
4538 | rc = 1; | |
4539 | } | |
4540 | ||
4541 | return rc; | |
3c3bea1c GS |
4542 | } |
4543 | ||
4544 | ||
4545 | static int | |
c6826062 | 4546 | remote_insert_hw_breakpoint (CORE_ADDR addr, gdb_byte *shadow) |
3c3bea1c GS |
4547 | { |
4548 | int len = 0; | |
d01949b6 AC |
4549 | struct remote_state *rs = get_remote_state (); |
4550 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4551 | char *p = buf; |
802188a7 | 4552 | |
c8189ed1 GS |
4553 | /* The length field should be set to the size of a breakpoint |
4554 | instruction. */ | |
4555 | ||
802188a7 | 4556 | BREAKPOINT_FROM_PC (&addr, &len); |
3c3bea1c | 4557 | |
444abaca | 4558 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
8a3fe4f8 | 4559 | error (_("Can't set hardware breakpoint without the '%s' (%s) packet."), |
444abaca DJ |
4560 | remote_protocol_packets[PACKET_Z1].name, |
4561 | remote_protocol_packets[PACKET_Z1].title); | |
802188a7 | 4562 | |
96baa820 JM |
4563 | *(p++) = 'Z'; |
4564 | *(p++) = '1'; | |
4565 | *(p++) = ','; | |
802188a7 | 4566 | |
96baa820 JM |
4567 | addr = remote_address_masked (addr); |
4568 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4569 | sprintf (p, ",%x", len); |
96baa820 JM |
4570 | |
4571 | putpkt (buf); | |
24b06219 | 4572 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 | 4573 | |
444abaca | 4574 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4575 | { |
4576 | case PACKET_ERROR: | |
4577 | case PACKET_UNKNOWN: | |
4578 | return -1; | |
4579 | case PACKET_OK: | |
4580 | return 0; | |
4581 | } | |
8e65ff28 | 4582 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4583 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
4584 | } |
4585 | ||
d471ea57 | 4586 | |
802188a7 | 4587 | static int |
c6826062 | 4588 | remote_remove_hw_breakpoint (CORE_ADDR addr, gdb_byte *shadow) |
96baa820 | 4589 | { |
3c3bea1c | 4590 | int len; |
d01949b6 AC |
4591 | struct remote_state *rs = get_remote_state (); |
4592 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4593 | char *p = buf; |
c8189ed1 GS |
4594 | |
4595 | /* The length field should be set to the size of a breakpoint | |
4596 | instruction. */ | |
4597 | ||
4598 | BREAKPOINT_FROM_PC (&addr, &len); | |
4599 | ||
444abaca | 4600 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
8a3fe4f8 | 4601 | error (_("Can't clear hardware breakpoint without the '%s' (%s) packet."), |
444abaca DJ |
4602 | remote_protocol_packets[PACKET_Z1].name, |
4603 | remote_protocol_packets[PACKET_Z1].title); | |
802188a7 | 4604 | |
96baa820 JM |
4605 | *(p++) = 'z'; |
4606 | *(p++) = '1'; | |
4607 | *(p++) = ','; | |
802188a7 | 4608 | |
96baa820 JM |
4609 | addr = remote_address_masked (addr); |
4610 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4611 | sprintf (p, ",%x", len); |
96baa820 JM |
4612 | |
4613 | putpkt(buf); | |
24b06219 | 4614 | getpkt (buf, rs->remote_packet_size, 0); |
802188a7 | 4615 | |
444abaca | 4616 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4617 | { |
4618 | case PACKET_ERROR: | |
4619 | case PACKET_UNKNOWN: | |
4620 | return -1; | |
4621 | case PACKET_OK: | |
4622 | return 0; | |
4623 | } | |
8e65ff28 | 4624 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4625 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 4626 | } |
96baa820 | 4627 | |
c906108c SS |
4628 | /* Some targets are only capable of doing downloads, and afterwards |
4629 | they switch to the remote serial protocol. This function provides | |
4630 | a clean way to get from the download target to the remote target. | |
4631 | It's basically just a wrapper so that we don't have to expose any | |
4632 | of the internal workings of remote.c. | |
4633 | ||
4634 | Prior to calling this routine, you should shutdown the current | |
4635 | target code, else you will get the "A program is being debugged | |
4636 | already..." message. Usually a call to pop_target() suffices. */ | |
4637 | ||
4638 | void | |
fba45db2 | 4639 | push_remote_target (char *name, int from_tty) |
c906108c | 4640 | { |
a3f17187 | 4641 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
4642 | remote_open (name, from_tty); |
4643 | } | |
4644 | ||
23860348 | 4645 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 4646 | |
c5aa993b JM |
4647 | static unsigned long crc32_table[256] = |
4648 | {0, 0}; | |
c906108c SS |
4649 | |
4650 | static unsigned long | |
fba45db2 | 4651 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4652 | { |
c5aa993b | 4653 | if (!crc32_table[1]) |
c906108c | 4654 | { |
23860348 | 4655 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
4656 | int i, j; |
4657 | unsigned int c; | |
4658 | ||
4659 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4660 | { |
4661 | for (c = i << 24, j = 8; j > 0; --j) | |
4662 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4663 | crc32_table[i] = c; | |
4664 | } | |
c906108c SS |
4665 | } |
4666 | ||
4667 | while (len--) | |
4668 | { | |
4669 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4670 | buf++; | |
4671 | } | |
4672 | return crc; | |
4673 | } | |
4674 | ||
4675 | /* compare-sections command | |
4676 | ||
4677 | With no arguments, compares each loadable section in the exec bfd | |
4678 | with the same memory range on the target, and reports mismatches. | |
4679 | Useful for verifying the image on the target against the exec file. | |
4680 | Depends on the target understanding the new "qCRC:" request. */ | |
4681 | ||
e514a9d6 JM |
4682 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4683 | target method (target verify memory) and generic version of the | |
4684 | actual command. This will allow other high-level code (especially | |
23860348 | 4685 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 4686 | |
c906108c | 4687 | static void |
fba45db2 | 4688 | compare_sections_command (char *args, int from_tty) |
c906108c | 4689 | { |
d01949b6 | 4690 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4691 | asection *s; |
4692 | unsigned long host_crc, target_crc; | |
4693 | extern bfd *exec_bfd; | |
4694 | struct cleanup *old_chain; | |
085dd6e6 JM |
4695 | char *tmp; |
4696 | char *sectdata; | |
ce359b09 | 4697 | const char *sectname; |
d01949b6 | 4698 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4699 | bfd_size_type size; |
4700 | bfd_vma lma; | |
4701 | int matched = 0; | |
4702 | int mismatched = 0; | |
4703 | ||
4704 | if (!exec_bfd) | |
8a3fe4f8 | 4705 | error (_("command cannot be used without an exec file")); |
c906108c SS |
4706 | if (!current_target.to_shortname || |
4707 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 4708 | error (_("command can only be used with remote target")); |
c906108c | 4709 | |
c5aa993b | 4710 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4711 | { |
4712 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4713 | continue; /* skip non-loadable section */ |
c906108c | 4714 | |
2c500098 | 4715 | size = bfd_get_section_size (s); |
c906108c | 4716 | if (size == 0) |
c5aa993b | 4717 | continue; /* skip zero-length section */ |
c906108c | 4718 | |
ce359b09 | 4719 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4720 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4721 | continue; /* not the section selected by user */ |
c906108c | 4722 | |
c5aa993b | 4723 | matched = 1; /* do this section */ |
c906108c | 4724 | lma = s->lma; |
23860348 | 4725 | /* FIXME: assumes lma can fit into long. */ |
ecbc58df WZ |
4726 | xsnprintf (buf, rs->remote_packet_size, "qCRC:%lx,%lx", |
4727 | (long) lma, (long) size); | |
c906108c SS |
4728 | putpkt (buf); |
4729 | ||
23860348 MS |
4730 | /* Be clever; compute the host_crc before waiting for target |
4731 | reply. */ | |
c906108c | 4732 | sectdata = xmalloc (size); |
b8c9b27d | 4733 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4734 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4735 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4736 | ||
24b06219 | 4737 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c | 4738 | if (buf[0] == 'E') |
8a3fe4f8 | 4739 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 4740 | sectname, paddr (lma), paddr (lma + size)); |
c906108c | 4741 | if (buf[0] != 'C') |
8a3fe4f8 | 4742 | error (_("remote target does not support this operation")); |
c906108c SS |
4743 | |
4744 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4745 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4746 | ||
d4f3574e SS |
4747 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4748 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4749 | if (host_crc == target_crc) |
4750 | printf_filtered ("matched.\n"); | |
4751 | else | |
c5aa993b JM |
4752 | { |
4753 | printf_filtered ("MIS-MATCHED!\n"); | |
4754 | mismatched++; | |
4755 | } | |
c906108c SS |
4756 | |
4757 | do_cleanups (old_chain); | |
4758 | } | |
4759 | if (mismatched > 0) | |
8a3fe4f8 AC |
4760 | warning (_("One or more sections of the remote executable does not match\n\ |
4761 | the loaded file\n")); | |
c906108c | 4762 | if (args && !matched) |
a3f17187 | 4763 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
4764 | } |
4765 | ||
1e3ff5ad | 4766 | static LONGEST |
4b8a223f | 4767 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
4768 | const char *annex, gdb_byte *readbuf, |
4769 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 4770 | { |
d01949b6 | 4771 | struct remote_state *rs = get_remote_state (); |
c906108c | 4772 | int i; |
d01949b6 | 4773 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 4774 | char *p2 = &buf2[0]; |
1e3ff5ad | 4775 | char query_type; |
c906108c | 4776 | |
21e3b9b9 DJ |
4777 | /* Handle memory using remote_xfer_memory. */ |
4778 | if (object == TARGET_OBJECT_MEMORY) | |
4779 | { | |
4780 | int xfered; | |
4781 | errno = 0; | |
4782 | ||
4783 | if (writebuf != NULL) | |
4784 | { | |
4785 | void *buffer = xmalloc (len); | |
4786 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4787 | memcpy (buffer, writebuf, len); | |
4788 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4789 | do_cleanups (cleanup); | |
4790 | } | |
4791 | else | |
4792 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4793 | ||
4794 | if (xfered > 0) | |
4795 | return xfered; | |
4796 | else if (xfered == 0 && errno == 0) | |
4797 | return 0; | |
4798 | else | |
4799 | return -1; | |
4800 | } | |
4801 | ||
4b8a223f AC |
4802 | /* Only handle reads. */ |
4803 | if (writebuf != NULL || readbuf == NULL) | |
4804 | return -1; | |
4805 | ||
1e3ff5ad AC |
4806 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4807 | objects!!! Instead specify new query packets. */ | |
4808 | switch (object) | |
c906108c | 4809 | { |
1e3ff5ad AC |
4810 | case TARGET_OBJECT_KOD: |
4811 | query_type = 'K'; | |
4812 | break; | |
4813 | case TARGET_OBJECT_AVR: | |
4814 | query_type = 'R'; | |
4815 | break; | |
802188a7 RM |
4816 | |
4817 | case TARGET_OBJECT_AUXV: | |
444abaca | 4818 | if (remote_protocol_packets[PACKET_qPart_auxv].support != PACKET_DISABLE) |
802188a7 RM |
4819 | { |
4820 | unsigned int total = 0; | |
4821 | while (len > 0) | |
4822 | { | |
4823 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
4824 | snprintf (buf2, rs->remote_packet_size, | |
4825 | "qPart:auxv:read::%s,%s", | |
4826 | phex_nz (offset, sizeof offset), | |
4827 | phex_nz (n, sizeof n)); | |
4828 | i = putpkt (buf2); | |
4829 | if (i < 0) | |
4830 | return total > 0 ? total : i; | |
4831 | buf2[0] = '\0'; | |
4832 | getpkt (buf2, rs->remote_packet_size, 0); | |
444abaca DJ |
4833 | if (packet_ok (buf2, &remote_protocol_packets[PACKET_qPart_auxv]) |
4834 | != PACKET_OK) | |
802188a7 RM |
4835 | return total > 0 ? total : -1; |
4836 | if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0') | |
4837 | break; /* Got EOF indicator. */ | |
4838 | /* Got some data. */ | |
4839 | i = hex2bin (buf2, readbuf, len); | |
4840 | if (i > 0) | |
4841 | { | |
4842 | readbuf = (void *) ((char *) readbuf + i); | |
4843 | offset += i; | |
4844 | len -= i; | |
4845 | total += i; | |
4846 | } | |
4847 | } | |
4848 | return total; | |
4849 | } | |
4850 | return -1; | |
4851 | ||
1e3ff5ad | 4852 | default: |
c906108c SS |
4853 | return -1; |
4854 | } | |
4855 | ||
4b8a223f | 4856 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 4857 | buffer size. */ |
4b8a223f | 4858 | if (offset == 0 && len == 0) |
1e3ff5ad | 4859 | return (rs->remote_packet_size); |
24b06219 MK |
4860 | /* Minimum outbuf size is RS->remote_packet_size. If LEN is not |
4861 | large enough let the caller deal with it. */ | |
4862 | if (len < rs->remote_packet_size) | |
1e3ff5ad AC |
4863 | return -1; |
4864 | len = rs->remote_packet_size; | |
4865 | ||
23860348 | 4866 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 4867 | if (!remote_desc) |
8a3fe4f8 | 4868 | error (_("remote query is only available after target open")); |
c906108c | 4869 | |
1e3ff5ad | 4870 | gdb_assert (annex != NULL); |
4b8a223f | 4871 | gdb_assert (readbuf != NULL); |
c906108c SS |
4872 | |
4873 | *p2++ = 'q'; | |
4874 | *p2++ = query_type; | |
4875 | ||
23860348 MS |
4876 | /* We used one buffer char for the remote protocol q command and |
4877 | another for the query type. As the remote protocol encapsulation | |
4878 | uses 4 chars plus one extra in case we are debugging | |
4879 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
4880 | string. */ | |
c906108c | 4881 | i = 0; |
24b06219 | 4882 | while (annex[i] && (i < (rs->remote_packet_size - 8))) |
c906108c | 4883 | { |
1e3ff5ad AC |
4884 | /* Bad caller may have sent forbidden characters. */ |
4885 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
4886 | *p2++ = annex[i]; | |
c906108c SS |
4887 | i++; |
4888 | } | |
1e3ff5ad AC |
4889 | *p2 = '\0'; |
4890 | gdb_assert (annex[i] == '\0'); | |
c906108c SS |
4891 | |
4892 | i = putpkt (buf2); | |
c5aa993b JM |
4893 | if (i < 0) |
4894 | return i; | |
c906108c | 4895 | |
cfd77fa1 | 4896 | getpkt ((char *) readbuf, len, 0); |
c906108c | 4897 | |
cfd77fa1 | 4898 | return strlen ((char *) readbuf); |
c906108c SS |
4899 | } |
4900 | ||
96baa820 JM |
4901 | static void |
4902 | remote_rcmd (char *command, | |
d9fcf2fb | 4903 | struct ui_file *outbuf) |
96baa820 | 4904 | { |
d01949b6 | 4905 | struct remote_state *rs = get_remote_state (); |
d01949b6 | 4906 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
4907 | char *p = buf; |
4908 | ||
4909 | if (!remote_desc) | |
8a3fe4f8 | 4910 | error (_("remote rcmd is only available after target open")); |
96baa820 | 4911 | |
23860348 | 4912 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
4913 | if (command == NULL) |
4914 | command = ""; | |
4915 | ||
23860348 | 4916 | /* The query prefix. */ |
96baa820 JM |
4917 | strcpy (buf, "qRcmd,"); |
4918 | p = strchr (buf, '\0'); | |
4919 | ||
24b06219 | 4920 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > rs->remote_packet_size) |
8a3fe4f8 | 4921 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 4922 | |
23860348 | 4923 | /* Encode the actual command. */ |
cfd77fa1 | 4924 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 JM |
4925 | |
4926 | if (putpkt (buf) < 0) | |
8a3fe4f8 | 4927 | error (_("Communication problem with target.")); |
96baa820 JM |
4928 | |
4929 | /* get/display the response */ | |
4930 | while (1) | |
4931 | { | |
23860348 | 4932 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
96baa820 | 4933 | buf[0] = '\0'; |
24b06219 | 4934 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 | 4935 | if (buf[0] == '\0') |
8a3fe4f8 | 4936 | error (_("Target does not support this command.")); |
96baa820 JM |
4937 | if (buf[0] == 'O' && buf[1] != 'K') |
4938 | { | |
23860348 | 4939 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
4940 | continue; |
4941 | } | |
4942 | if (strcmp (buf, "OK") == 0) | |
4943 | break; | |
7be570e7 JM |
4944 | if (strlen (buf) == 3 && buf[0] == 'E' |
4945 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4946 | { | |
8a3fe4f8 | 4947 | error (_("Protocol error with Rcmd")); |
7be570e7 | 4948 | } |
96baa820 JM |
4949 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4950 | { | |
4951 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4952 | fputc_unfiltered (c, outbuf); | |
4953 | } | |
4954 | break; | |
4955 | } | |
4956 | } | |
4957 | ||
c906108c | 4958 | static void |
fba45db2 | 4959 | packet_command (char *args, int from_tty) |
c906108c | 4960 | { |
d01949b6 AC |
4961 | struct remote_state *rs = get_remote_state (); |
4962 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 4963 | |
c5aa993b | 4964 | if (!remote_desc) |
8a3fe4f8 | 4965 | error (_("command can only be used with remote target")); |
c906108c | 4966 | |
c5aa993b | 4967 | if (!args) |
8a3fe4f8 | 4968 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
4969 | |
4970 | puts_filtered ("sending: "); | |
4971 | print_packet (args); | |
4972 | puts_filtered ("\n"); | |
4973 | putpkt (args); | |
4974 | ||
24b06219 | 4975 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c SS |
4976 | puts_filtered ("received: "); |
4977 | print_packet (buf); | |
4978 | puts_filtered ("\n"); | |
4979 | } | |
4980 | ||
4981 | #if 0 | |
23860348 | 4982 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 4983 | |
a14ed312 | 4984 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 4985 | |
a14ed312 | 4986 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 4987 | |
a14ed312 | 4988 | static void threadalive_test (char *cmd, int tty); |
c906108c | 4989 | |
a14ed312 | 4990 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 4991 | |
23860348 | 4992 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 4993 | |
a14ed312 | 4994 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 4995 | |
23860348 | 4996 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 4997 | |
a14ed312 | 4998 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 4999 | |
a14ed312 | 5000 | static void init_remote_threadtests (void); |
c906108c | 5001 | |
23860348 | 5002 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5003 | |
5004 | static void | |
fba45db2 | 5005 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5006 | { |
5007 | int sample_thread = SAMPLE_THREAD; | |
5008 | ||
a3f17187 | 5009 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5010 | set_thread (sample_thread, 1); |
5011 | } | |
5012 | ||
5013 | ||
5014 | static void | |
fba45db2 | 5015 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5016 | { |
5017 | int sample_thread = SAMPLE_THREAD; | |
5018 | ||
39f77062 | 5019 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5020 | printf_filtered ("PASS: Thread alive test\n"); |
5021 | else | |
5022 | printf_filtered ("FAIL: Thread alive test\n"); | |
5023 | } | |
5024 | ||
23860348 | 5025 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5026 | |
5027 | void | |
fba45db2 | 5028 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5029 | { |
5030 | char hexid[20]; | |
5031 | ||
23860348 | 5032 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5033 | hexid[16] = 0; |
5034 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5035 | } | |
5036 | ||
5037 | static void | |
fba45db2 | 5038 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5039 | { |
5040 | int startflag = 1; | |
5041 | threadref nextthread; | |
5042 | int done, result_count; | |
5043 | threadref threadlist[3]; | |
5044 | ||
5045 | printf_filtered ("Remote Threadlist test\n"); | |
5046 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5047 | &result_count, &threadlist[0])) | |
5048 | printf_filtered ("FAIL: threadlist test\n"); | |
5049 | else | |
5050 | { | |
5051 | threadref *scan = threadlist; | |
5052 | threadref *limit = scan + result_count; | |
5053 | ||
5054 | while (scan < limit) | |
5055 | output_threadid (" thread ", scan++); | |
5056 | } | |
5057 | } | |
5058 | ||
5059 | void | |
fba45db2 | 5060 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5061 | { |
5062 | output_threadid ("Threadid: ", &info->threadid); | |
5063 | printf_filtered ("Name: %s\n ", info->shortname); | |
5064 | printf_filtered ("State: %s\n", info->display); | |
5065 | printf_filtered ("other: %s\n\n", info->more_display); | |
5066 | } | |
5067 | ||
5068 | int | |
fba45db2 | 5069 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5070 | { |
5071 | int result; | |
5072 | int set; | |
5073 | struct gdb_ext_thread_info threadinfo; | |
5074 | ||
5075 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5076 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5077 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5078 | display_thread_info (&threadinfo); | |
5079 | return result; | |
5080 | } | |
5081 | ||
5082 | static void | |
fba45db2 | 5083 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5084 | { |
5085 | int athread = SAMPLE_THREAD; | |
5086 | threadref thread; | |
5087 | int set; | |
5088 | ||
5089 | int_to_threadref (&thread, athread); | |
5090 | printf_filtered ("Remote Threadinfo test\n"); | |
5091 | if (!get_and_display_threadinfo (&thread)) | |
5092 | printf_filtered ("FAIL cannot get thread info\n"); | |
5093 | } | |
5094 | ||
5095 | static int | |
fba45db2 | 5096 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5097 | { |
5098 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5099 | return get_and_display_threadinfo (ref); | |
5100 | } | |
5101 | ||
5102 | static void | |
fba45db2 | 5103 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5104 | { |
5105 | printf_filtered ("Remote Threadlist update test\n"); | |
5106 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5107 | } | |
5108 | ||
5109 | static void | |
5110 | init_remote_threadtests (void) | |
5111 | { | |
1bedd215 AC |
5112 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5113 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5114 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5115 | _("Fetch and display info about one thread")); |
c906108c | 5116 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5117 | _("Test setting to a different thread")); |
c906108c | 5118 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5119 | _("Iterate through updating all remote thread info")); |
c906108c | 5120 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5121 | _(" Remote thread alive test ")); |
c906108c SS |
5122 | } |
5123 | ||
5124 | #endif /* 0 */ | |
5125 | ||
f3fb8c85 MS |
5126 | /* Convert a thread ID to a string. Returns the string in a static |
5127 | buffer. */ | |
5128 | ||
5129 | static char * | |
39f77062 | 5130 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 5131 | { |
fd0a2a6f | 5132 | static char buf[32]; |
f3fb8c85 | 5133 | |
6c76e4a1 | 5134 | xsnprintf (buf, sizeof buf, "thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
5135 | return buf; |
5136 | } | |
5137 | ||
38691318 KB |
5138 | /* Get the address of the thread local variable in OBJFILE which is |
5139 | stored at OFFSET within the thread local storage for thread PTID. */ | |
5140 | ||
5141 | static CORE_ADDR | |
5142 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
5143 | { | |
444abaca | 5144 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
5145 | { |
5146 | struct remote_state *rs = get_remote_state (); | |
5147 | char *buf = alloca (rs->remote_packet_size); | |
5148 | char *p = buf; | |
571dd617 | 5149 | enum packet_result result; |
38691318 KB |
5150 | |
5151 | strcpy (p, "qGetTLSAddr:"); | |
5152 | p += strlen (p); | |
5153 | p += hexnumstr (p, PIDGET (ptid)); | |
5154 | *p++ = ','; | |
5155 | p += hexnumstr (p, offset); | |
5156 | *p++ = ','; | |
5157 | p += hexnumstr (p, lm); | |
5158 | *p++ = '\0'; | |
5159 | ||
5160 | putpkt (buf); | |
5161 | getpkt (buf, rs->remote_packet_size, 0); | |
444abaca | 5162 | result = packet_ok (buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); |
571dd617 | 5163 | if (result == PACKET_OK) |
38691318 KB |
5164 | { |
5165 | ULONGEST result; | |
5166 | ||
5167 | unpack_varlen_hex (buf, &result); | |
5168 | return result; | |
5169 | } | |
571dd617 | 5170 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
5171 | throw_error (TLS_GENERIC_ERROR, |
5172 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 5173 | else |
109c3e39 AC |
5174 | throw_error (TLS_GENERIC_ERROR, |
5175 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
5176 | } |
5177 | else | |
109c3e39 AC |
5178 | throw_error (TLS_GENERIC_ERROR, |
5179 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
5180 | /* Not reached. */ |
5181 | return 0; | |
5182 | } | |
5183 | ||
c906108c | 5184 | static void |
fba45db2 | 5185 | init_remote_ops (void) |
c906108c | 5186 | { |
c5aa993b | 5187 | remote_ops.to_shortname = "remote"; |
c906108c | 5188 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5189 | remote_ops.to_doc = |
c906108c | 5190 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5191 | Specify the serial device it is connected to\n\ |
5192 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5193 | remote_ops.to_open = remote_open; |
5194 | remote_ops.to_close = remote_close; | |
c906108c | 5195 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5196 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5197 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5198 | remote_ops.to_wait = remote_wait; |
5199 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5200 | remote_ops.to_store_registers = remote_store_registers; | |
5201 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5202 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5203 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5204 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5205 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5206 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5207 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5208 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5209 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5210 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5211 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5212 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5213 | remote_ops.to_kill = remote_kill; |
5214 | remote_ops.to_load = generic_load; | |
c906108c SS |
5215 | remote_ops.to_mourn_inferior = remote_mourn; |
5216 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5217 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5218 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5219 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5220 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5221 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5222 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 5223 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 5224 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5225 | remote_ops.to_has_all_memory = 1; |
5226 | remote_ops.to_has_memory = 1; | |
5227 | remote_ops.to_has_stack = 1; | |
5228 | remote_ops.to_has_registers = 1; | |
5229 | remote_ops.to_has_execution = 1; | |
5230 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5231 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5232 | } |
5233 | ||
5234 | /* Set up the extended remote vector by making a copy of the standard | |
5235 | remote vector and adding to it. */ | |
5236 | ||
5237 | static void | |
fba45db2 | 5238 | init_extended_remote_ops (void) |
c906108c SS |
5239 | { |
5240 | extended_remote_ops = remote_ops; | |
5241 | ||
0f71a2f6 | 5242 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5243 | extended_remote_ops.to_longname = |
c906108c | 5244 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5245 | extended_remote_ops.to_doc = |
c906108c SS |
5246 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5247 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5248 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5249 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5250 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5251 | } |
5252 | ||
6426a772 JM |
5253 | static int |
5254 | remote_can_async_p (void) | |
5255 | { | |
23860348 | 5256 | /* We're async whenever the serial device is. */ |
2cd58942 | 5257 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5258 | } |
5259 | ||
5260 | static int | |
5261 | remote_is_async_p (void) | |
5262 | { | |
23860348 | 5263 | /* We're async whenever the serial device is. */ |
2cd58942 | 5264 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5265 | } |
5266 | ||
2acceee2 JM |
5267 | /* Pass the SERIAL event on and up to the client. One day this code |
5268 | will be able to delay notifying the client of an event until the | |
23860348 | 5269 | point where an entire packet has been received. */ |
2acceee2 | 5270 | |
23860348 MS |
5271 | static void (*async_client_callback) (enum inferior_event_type event_type, |
5272 | void *context); | |
2acceee2 JM |
5273 | static void *async_client_context; |
5274 | static serial_event_ftype remote_async_serial_handler; | |
5275 | ||
6426a772 | 5276 | static void |
819cc324 | 5277 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5278 | { |
2acceee2 JM |
5279 | /* Don't propogate error information up to the client. Instead let |
5280 | the client find out about the error by querying the target. */ | |
5281 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5282 | } | |
5283 | ||
5284 | static void | |
23860348 MS |
5285 | remote_async (void (*callback) (enum inferior_event_type event_type, |
5286 | void *context), void *context) | |
2acceee2 | 5287 | { |
ed9a39eb | 5288 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5289 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5290 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5291 | |
2acceee2 JM |
5292 | if (callback != NULL) |
5293 | { | |
2cd58942 | 5294 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5295 | async_client_callback = callback; |
5296 | async_client_context = context; | |
5297 | } | |
5298 | else | |
2cd58942 | 5299 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5300 | } |
5301 | ||
43ff13b4 JM |
5302 | /* Target async and target extended-async. |
5303 | ||
5304 | This are temporary targets, until it is all tested. Eventually | |
5305 | async support will be incorporated int the usual 'remote' | |
23860348 | 5306 | target. */ |
43ff13b4 JM |
5307 | |
5308 | static void | |
c2d11a7d | 5309 | init_remote_async_ops (void) |
43ff13b4 JM |
5310 | { |
5311 | remote_async_ops.to_shortname = "async"; | |
23860348 MS |
5312 | remote_async_ops.to_longname = |
5313 | "Remote serial target in async version of the gdb-specific protocol"; | |
c5aa993b | 5314 | remote_async_ops.to_doc = |
43ff13b4 JM |
5315 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5316 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5317 | remote_async_ops.to_open = remote_async_open; |
5318 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5319 | remote_async_ops.to_detach = remote_detach; |
5320 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5321 | remote_async_ops.to_resume = remote_async_resume; |
5322 | remote_async_ops.to_wait = remote_async_wait; | |
5323 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5324 | remote_async_ops.to_store_registers = remote_store_registers; | |
5325 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5326 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5327 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5328 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5329 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5330 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5331 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5332 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5333 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5334 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5335 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5336 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5337 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5338 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5339 | remote_async_ops.to_kill = remote_async_kill; |
5340 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5341 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5342 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5343 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5344 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5345 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5346 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5347 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5348 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5349 | remote_async_ops.to_stratum = process_stratum; |
5350 | remote_async_ops.to_has_all_memory = 1; | |
5351 | remote_async_ops.to_has_memory = 1; | |
5352 | remote_async_ops.to_has_stack = 1; | |
5353 | remote_async_ops.to_has_registers = 1; | |
5354 | remote_async_ops.to_has_execution = 1; | |
5355 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5356 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5357 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5358 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5359 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5360 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5361 | } |
5362 | ||
5363 | /* Set up the async extended remote vector by making a copy of the standard | |
5364 | remote vector and adding to it. */ | |
5365 | ||
5366 | static void | |
c2d11a7d | 5367 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5368 | { |
5369 | extended_async_remote_ops = remote_async_ops; | |
5370 | ||
5371 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5372 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5373 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5374 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5375 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5376 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5377 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5378 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5379 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5380 | } | |
5381 | ||
37a105a1 DJ |
5382 | static struct cmd_list_element *remote_set_cmdlist; |
5383 | static struct cmd_list_element *remote_show_cmdlist; | |
5384 | ||
5a2468f5 | 5385 | static void |
c2d11a7d | 5386 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5387 | { |
5a2468f5 JM |
5388 | } |
5389 | ||
d471ea57 AC |
5390 | static void |
5391 | show_remote_cmd (char *args, int from_tty) | |
5392 | { | |
37a105a1 DJ |
5393 | /* We can't just use cmd_show_list here, because we want to skip |
5394 | the redundant "show remote Z-packet". */ | |
5395 | struct cleanup *showlist_chain; | |
5396 | struct cmd_list_element *list = remote_show_cmdlist; | |
5397 | ||
5398 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
5399 | for (; list != NULL; list = list->next) | |
5400 | if (strcmp (list->name, "Z-packet") == 0) | |
5401 | continue; | |
5402 | else if (list->type == show_cmd) | |
5403 | { | |
5404 | struct cleanup *option_chain | |
5405 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
5406 | ui_out_field_string (uiout, "name", list->name); | |
5407 | ui_out_text (uiout, ": "); | |
5408 | do_setshow_command ((char *) NULL, from_tty, list); | |
5409 | /* Close the tuple. */ | |
5410 | do_cleanups (option_chain); | |
5411 | } | |
d471ea57 | 5412 | } |
5a2468f5 | 5413 | |
0f71a2f6 | 5414 | static void |
fba45db2 | 5415 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5416 | { |
d696208f | 5417 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5418 | } |
5419 | ||
23860348 | 5420 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
5421 | static void (*remote_new_objfile_chain) (struct objfile *); |
5422 | ||
23860348 | 5423 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
5424 | static void |
5425 | remote_new_objfile (struct objfile *objfile) | |
5426 | { | |
23860348 | 5427 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
5428 | { |
5429 | remote_check_symbols (objfile); | |
5430 | } | |
23860348 | 5431 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
5432 | if (remote_new_objfile_chain != 0 && |
5433 | remote_desc == 0) | |
5434 | remote_new_objfile_chain (objfile); | |
5435 | } | |
5436 | ||
c906108c | 5437 | void |
fba45db2 | 5438 | _initialize_remote (void) |
c906108c | 5439 | { |
0f71a2f6 | 5440 | /* architecture specific data */ |
23860348 MS |
5441 | remote_gdbarch_data_handle = |
5442 | gdbarch_data_register_post_init (init_remote_state); | |
d01949b6 AC |
5443 | |
5444 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5445 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5446 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5447 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5448 | |
c906108c SS |
5449 | init_remote_ops (); |
5450 | add_target (&remote_ops); | |
5451 | ||
5452 | init_extended_remote_ops (); | |
5453 | add_target (&extended_remote_ops); | |
cce74817 | 5454 | |
43ff13b4 JM |
5455 | init_remote_async_ops (); |
5456 | add_target (&remote_async_ops); | |
5457 | ||
5458 | init_extended_async_remote_ops (); | |
5459 | add_target (&extended_async_remote_ops); | |
5460 | ||
dc8acb97 | 5461 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5462 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5463 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5464 | |
c906108c SS |
5465 | #if 0 |
5466 | init_remote_threadtests (); | |
5467 | #endif | |
5468 | ||
23860348 | 5469 | /* set/show remote ... */ |
d471ea57 | 5470 | |
1bedd215 | 5471 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
5472 | Remote protocol specific variables\n\ |
5473 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5474 | the packets being used"), |
cff3e48b | 5475 | &remote_set_cmdlist, "set remote ", |
23860348 | 5476 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 5477 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
5478 | Remote protocol specific variables\n\ |
5479 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5480 | the packets being used"), |
cff3e48b | 5481 | &remote_show_cmdlist, "show remote ", |
23860348 | 5482 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 5483 | |
1a966eab AC |
5484 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
5485 | Compare section data on target to the exec file.\n\ | |
5486 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
5487 | &cmdlist); |
5488 | ||
1a966eab AC |
5489 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
5490 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
5491 | maintenance packet TEXT\n\ |
5492 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5493 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5494 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 5495 | terminating `#' character and checksum."), |
c906108c SS |
5496 | &maintenancelist); |
5497 | ||
7915a72c AC |
5498 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
5499 | Set whether to send break if interrupted."), _("\ | |
5500 | Show whether to send break if interrupted."), _("\ | |
5501 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 5502 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 5503 | &setlist, &showlist); |
c906108c | 5504 | |
23860348 | 5505 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 5506 | |
1a966eab AC |
5507 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
5508 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 5509 | &setlist); |
1a966eab AC |
5510 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
5511 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
5512 | &showlist); |
5513 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
5514 | set_memory_write_packet_size, _("\ |
5515 | Set the maximum number of bytes per memory-write packet.\n\ | |
5516 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5517 | default packet size. The actual limit is further reduced\n\ | |
5518 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5519 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5520 | &remote_set_cmdlist); |
5521 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
5522 | set_memory_read_packet_size, _("\ |
5523 | Set the maximum number of bytes per memory-read packet.\n\ | |
5524 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5525 | default packet size. The actual limit is further reduced\n\ | |
5526 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5527 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5528 | &remote_set_cmdlist); |
5529 | add_cmd ("memory-write-packet-size", no_class, | |
5530 | show_memory_write_packet_size, | |
1a966eab | 5531 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
5532 | &remote_show_cmdlist); |
5533 | add_cmd ("memory-read-packet-size", no_class, | |
5534 | show_memory_read_packet_size, | |
1a966eab | 5535 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 5536 | &remote_show_cmdlist); |
c906108c | 5537 | |
b3f42336 | 5538 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
5539 | &remote_hw_watchpoint_limit, _("\ |
5540 | Set the maximum number of target hardware watchpoints."), _("\ | |
5541 | Show the maximum number of target hardware watchpoints."), _("\ | |
5542 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5543 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
5544 | &remote_set_cmdlist, &remote_show_cmdlist); |
5545 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
5546 | &remote_hw_breakpoint_limit, _("\ |
5547 | Set the maximum number of target hardware breakpoints."), _("\ | |
5548 | Show the maximum number of target hardware breakpoints."), _("\ | |
5549 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5550 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 5551 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 5552 | |
4d28ad1e AC |
5553 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
5554 | &remote_address_size, _("\ | |
5555 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
5556 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
5557 | NULL, | |
5558 | NULL, /* FIXME: i18n: */ | |
5559 | &setlist, &showlist); | |
c906108c | 5560 | |
444abaca | 5561 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
96baa820 | 5562 | "X", "binary-download", |
444abaca DJ |
5563 | set_remote_protocol_packet_cmd, |
5564 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5565 | &remote_set_cmdlist, &remote_show_cmdlist, |
5566 | 1); | |
0f71a2f6 | 5567 | |
444abaca | 5568 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
506fb367 | 5569 | "vCont", "verbose-resume", |
444abaca DJ |
5570 | set_remote_protocol_packet_cmd, |
5571 | show_remote_protocol_packet_cmd, | |
506fb367 DJ |
5572 | &remote_set_cmdlist, &remote_show_cmdlist, |
5573 | 0); | |
5574 | ||
444abaca | 5575 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
dc8acb97 | 5576 | "qSymbol", "symbol-lookup", |
444abaca DJ |
5577 | set_remote_protocol_packet_cmd, |
5578 | show_remote_protocol_packet_cmd, | |
dc8acb97 MS |
5579 | &remote_set_cmdlist, &remote_show_cmdlist, |
5580 | 0); | |
5581 | ||
444abaca | 5582 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
d471ea57 | 5583 | "P", "set-register", |
444abaca DJ |
5584 | set_remote_protocol_packet_cmd, |
5585 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5586 | &remote_set_cmdlist, &remote_show_cmdlist, |
5587 | 1); | |
5588 | ||
444abaca | 5589 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
b96ec7ac | 5590 | "p", "fetch-register", |
444abaca DJ |
5591 | set_remote_protocol_packet_cmd, |
5592 | show_remote_protocol_packet_cmd, | |
b96ec7ac AC |
5593 | &remote_set_cmdlist, &remote_show_cmdlist, |
5594 | 1); | |
5595 | ||
444abaca | 5596 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
d471ea57 | 5597 | "Z0", "software-breakpoint", |
444abaca DJ |
5598 | set_remote_protocol_packet_cmd, |
5599 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5600 | &remote_set_cmdlist, &remote_show_cmdlist, |
5601 | 0); | |
5602 | ||
444abaca | 5603 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
d471ea57 | 5604 | "Z1", "hardware-breakpoint", |
444abaca DJ |
5605 | set_remote_protocol_packet_cmd, |
5606 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5607 | &remote_set_cmdlist, &remote_show_cmdlist, |
5608 | 0); | |
5609 | ||
444abaca | 5610 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
d471ea57 | 5611 | "Z2", "write-watchpoint", |
444abaca DJ |
5612 | set_remote_protocol_packet_cmd, |
5613 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5614 | &remote_set_cmdlist, &remote_show_cmdlist, |
5615 | 0); | |
5616 | ||
444abaca | 5617 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
d471ea57 | 5618 | "Z3", "read-watchpoint", |
444abaca DJ |
5619 | set_remote_protocol_packet_cmd, |
5620 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5621 | &remote_set_cmdlist, &remote_show_cmdlist, |
5622 | 0); | |
5623 | ||
444abaca | 5624 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
d471ea57 | 5625 | "Z4", "access-watchpoint", |
444abaca DJ |
5626 | set_remote_protocol_packet_cmd, |
5627 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5628 | &remote_set_cmdlist, &remote_show_cmdlist, |
5629 | 0); | |
5630 | ||
444abaca | 5631 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qPart_auxv], |
802188a7 | 5632 | "qPart_auxv", "read-aux-vector", |
444abaca DJ |
5633 | set_remote_protocol_packet_cmd, |
5634 | show_remote_protocol_packet_cmd, | |
802188a7 RM |
5635 | &remote_set_cmdlist, &remote_show_cmdlist, |
5636 | 0); | |
5637 | ||
444abaca | 5638 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 5639 | "qGetTLSAddr", "get-thread-local-storage-address", |
444abaca DJ |
5640 | set_remote_protocol_packet_cmd, |
5641 | show_remote_protocol_packet_cmd, | |
38691318 KB |
5642 | &remote_set_cmdlist, &remote_show_cmdlist, |
5643 | 0); | |
5644 | ||
37a105a1 DJ |
5645 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
5646 | Z sub-packet has its own set and show commands, but users may | |
5647 | have sets to this variable in their .gdbinit files (or in their | |
5648 | documentation). */ | |
e9e68a56 | 5649 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
5650 | &remote_Z_packet_detect, _("\ |
5651 | Set use of remote protocol `Z' packets"), _("\ | |
5652 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 5653 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 5654 | packets."), |
e9e68a56 | 5655 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 5656 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 5657 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
5658 | |
5659 | /* Eventually initialize fileio. See fileio.c */ | |
5660 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5661 | } |