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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
197e01b6 | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
24b06219 | 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
29182b13 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
c5aa993b | 23 | |
23860348 | 24 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 25 | |
c906108c SS |
26 | #include "defs.h" |
27 | #include "gdb_string.h" | |
28 | #include <ctype.h> | |
29 | #include <fcntl.h> | |
c906108c SS |
30 | #include "inferior.h" |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
60250e8b | 33 | #include "exceptions.h" |
c906108c | 34 | #include "target.h" |
c5aa993b | 35 | /*#include "terminal.h" */ |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "objfiles.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "gdbthread.h" | |
c2c6d25f | 40 | #include "remote.h" |
4e052eda | 41 | #include "regcache.h" |
fd0407d6 | 42 | #include "value.h" |
1ff9c3d6 | 43 | #include "gdb_assert.h" |
6867ae3e | 44 | #include "observer.h" |
a77053c2 | 45 | #include "solib.h" |
37a105a1 DJ |
46 | #include "cli/cli-decode.h" |
47 | #include "cli/cli-setshow.h" | |
c906108c | 48 | |
7a292a7a | 49 | #include <ctype.h> |
9846de1b | 50 | #include <sys/time.h> |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 CV |
61 | #include "remote-fileio.h" |
62 | ||
23860348 | 63 | /* Prototypes for local functions. */ |
6426a772 JM |
64 | static void cleanup_sigint_signal_handler (void *dummy); |
65 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 66 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 67 | |
a14ed312 KB |
68 | static void handle_remote_sigint (int); |
69 | static void handle_remote_sigint_twice (int); | |
70 | static void async_remote_interrupt (gdb_client_data); | |
71 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 72 | |
a14ed312 | 73 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 74 | |
a14ed312 | 75 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 76 | |
a14ed312 | 77 | static void remote_prepare_to_store (void); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_fetch_registers (int regno); |
c906108c | 80 | |
39f77062 KB |
81 | static void remote_resume (ptid_t ptid, int step, |
82 | enum target_signal siggnal); | |
83 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 84 | enum target_signal siggnal); |
a14ed312 KB |
85 | static void remote_open (char *name, int from_tty); |
86 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 87 | |
a14ed312 KB |
88 | static void extended_remote_open (char *name, int from_tty); |
89 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 90 | |
92d1e331 DJ |
91 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
92 | int async_p); | |
c906108c | 93 | |
a14ed312 | 94 | static void remote_close (int quitting); |
c906108c | 95 | |
a14ed312 | 96 | static void remote_store_registers (int regno); |
c906108c | 97 | |
a14ed312 KB |
98 | static void remote_mourn (void); |
99 | static void remote_async_mourn (void); | |
c906108c | 100 | |
a14ed312 | 101 | static void extended_remote_restart (void); |
c906108c | 102 | |
a14ed312 | 103 | static void extended_remote_mourn (void); |
c906108c | 104 | |
a14ed312 | 105 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 106 | |
6d820c5c | 107 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 108 | |
a14ed312 | 109 | static int readchar (int timeout); |
c906108c | 110 | |
39f77062 KB |
111 | static ptid_t remote_wait (ptid_t ptid, |
112 | struct target_waitstatus *status); | |
113 | static ptid_t remote_async_wait (ptid_t ptid, | |
114 | struct target_waitstatus *status); | |
c906108c | 115 | |
a14ed312 KB |
116 | static void remote_kill (void); |
117 | static void remote_async_kill (void); | |
c906108c | 118 | |
a14ed312 | 119 | static int tohex (int nib); |
c906108c | 120 | |
a14ed312 | 121 | static void remote_detach (char *args, int from_tty); |
c906108c | 122 | |
a14ed312 | 123 | static void remote_interrupt (int signo); |
c906108c | 124 | |
a14ed312 | 125 | static void remote_interrupt_twice (int signo); |
7a292a7a | 126 | |
a14ed312 | 127 | static void interrupt_query (void); |
c906108c | 128 | |
a14ed312 | 129 | static void set_thread (int, int); |
c906108c | 130 | |
39f77062 | 131 | static int remote_thread_alive (ptid_t); |
c906108c | 132 | |
a14ed312 | 133 | static void get_offsets (void); |
c906108c | 134 | |
6d820c5c DJ |
135 | static void skip_frame (void); |
136 | ||
137 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 138 | |
5a168c78 | 139 | static int remote_insert_breakpoint (CORE_ADDR, bfd_byte *); |
c906108c | 140 | |
5a168c78 | 141 | static int remote_remove_breakpoint (CORE_ADDR, bfd_byte *); |
c906108c | 142 | |
a14ed312 | 143 | static int hexnumlen (ULONGEST num); |
c906108c | 144 | |
a14ed312 | 145 | static void init_remote_ops (void); |
c906108c | 146 | |
a14ed312 | 147 | static void init_extended_remote_ops (void); |
c906108c | 148 | |
a14ed312 | 149 | static void remote_stop (void); |
c906108c | 150 | |
a14ed312 | 151 | static int ishex (int ch, int *val); |
c906108c | 152 | |
a14ed312 | 153 | static int stubhex (int ch); |
c906108c | 154 | |
a14ed312 | 155 | static int hexnumstr (char *, ULONGEST); |
c906108c | 156 | |
a14ed312 | 157 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 158 | |
a14ed312 | 159 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 160 | |
a14ed312 | 161 | static void print_packet (char *); |
c906108c | 162 | |
a14ed312 | 163 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 164 | |
a14ed312 | 165 | static void compare_sections_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void packet_command (char *, int); |
c906108c | 168 | |
a14ed312 | 169 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 170 | |
39f77062 | 171 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 172 | |
a14ed312 | 173 | static void remote_find_new_threads (void); |
c906108c | 174 | |
a14ed312 | 175 | static void record_currthread (int currthread); |
c906108c | 176 | |
30559e10 | 177 | static int fromhex (int a); |
c906108c | 178 | |
cfd77fa1 | 179 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 180 | |
cfd77fa1 | 181 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 182 | |
a14ed312 | 183 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 184 | |
a14ed312 | 185 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 186 | |
5a2468f5 | 187 | struct packet_config; |
5a2468f5 | 188 | |
a14ed312 | 189 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 190 | |
d471ea57 | 191 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 192 | |
a14ed312 | 193 | void _initialize_remote (void); |
c906108c | 194 | |
694f61fb | 195 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
196 | target is open()ed, remote.c should create a per-target description |
197 | of the remote protocol using that target's architecture. | |
ce2826aa | 198 | Unfortunately, the target stack doesn't include local state. For |
d01949b6 AC |
199 | the moment keep the information in the target's architecture |
200 | object. Sigh.. */ | |
201 | ||
ad10f812 AC |
202 | struct packet_reg |
203 | { | |
204 | long offset; /* Offset into G packet. */ | |
205 | long regnum; /* GDB's internal register number. */ | |
206 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 207 | int in_g_packet; /* Always part of G packet. */ |
23860348 MS |
208 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
209 | at present. */ | |
ad10f812 AC |
210 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
211 | }; | |
212 | ||
d01949b6 AC |
213 | struct remote_state |
214 | { | |
ad10f812 AC |
215 | /* Description of the remote protocol registers. */ |
216 | long sizeof_g_packet; | |
b323314b AC |
217 | |
218 | /* Description of the remote protocol registers indexed by REGNUM | |
219 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
220 | struct packet_reg *regs; | |
ad10f812 | 221 | |
d01949b6 AC |
222 | /* This is the size (in chars) of the first response to the ``g'' |
223 | packet. It is used as a heuristic when determining the maximum | |
224 | size of memory-read and memory-write packets. A target will | |
225 | typically only reserve a buffer large enough to hold the ``g'' | |
226 | packet. The size does not include packet overhead (headers and | |
23860348 | 227 | trailers). */ |
d01949b6 AC |
228 | long actual_register_packet_size; |
229 | ||
230 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 231 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 | 232 | long remote_packet_size; |
6d820c5c DJ |
233 | |
234 | /* A buffer to use for incoming packets, and its current size. The | |
235 | buffer is grown dynamically for larger incoming packets. | |
236 | Outgoing packets may also be constructed in this buffer. | |
237 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
238 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
239 | packets. */ | |
240 | char *buf; | |
241 | long buf_size; | |
d01949b6 AC |
242 | }; |
243 | ||
3c3bea1c | 244 | |
d01949b6 AC |
245 | /* Handle for retreving the remote protocol data from gdbarch. */ |
246 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
247 | ||
248 | static struct remote_state * | |
5ae5f592 | 249 | get_remote_state (void) |
d01949b6 | 250 | { |
451fbdda | 251 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
252 | } |
253 | ||
254 | static void * | |
255 | init_remote_state (struct gdbarch *gdbarch) | |
256 | { | |
257 | int regnum; | |
e5e78edc | 258 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state); |
d01949b6 | 259 | |
46845f5e | 260 | rs->sizeof_g_packet = 0; |
ad10f812 | 261 | |
b323314b | 262 | /* Assume a 1:1 regnum<->pnum table. */ |
e5e78edc AC |
263 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
264 | struct packet_reg); | |
b323314b | 265 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 266 | { |
b323314b AC |
267 | struct packet_reg *r = &rs->regs[regnum]; |
268 | r->pnum = regnum; | |
269 | r->regnum = regnum; | |
62700349 | 270 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 271 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 272 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d | 273 | |
23860348 | 274 | /* Compute packet size by accumulating the size of all registers. */ |
46845f5e KB |
275 | if (regnum < NUM_REGS) |
276 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); | |
ad10f812 AC |
277 | } |
278 | ||
d01949b6 AC |
279 | /* Default maximum number of characters in a packet body. Many |
280 | remote stubs have a hardwired buffer size of 400 bytes | |
281 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
282 | as the maximum packet-size to ensure that the packet and an extra | |
283 | NUL character can always fit in the buffer. This stops GDB | |
284 | trashing stubs that try to squeeze an extra NUL into what is | |
23860348 | 285 | already a full buffer (As of 1999-12-04 that was most stubs. */ |
d01949b6 AC |
286 | rs->remote_packet_size = 400 - 1; |
287 | ||
ad10f812 AC |
288 | /* Should rs->sizeof_g_packet needs more space than the |
289 | default, adjust the size accordingly. Remember that each byte is | |
290 | encoded as two characters. 32 is the overhead for the packet | |
291 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 292 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 293 | little. */ |
ad10f812 AC |
294 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
295 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
802188a7 | 296 | |
23860348 | 297 | /* This one is filled in when a ``g'' packet is received. */ |
d01949b6 AC |
298 | rs->actual_register_packet_size = 0; |
299 | ||
6d820c5c DJ |
300 | /* Create the buffer at a default size. Note that this would |
301 | leak memory if the gdbarch were ever destroyed; there's no | |
302 | way to register a destructor for it, and we can't realloc | |
303 | using the gdbarch obstack. But gdbarches are never | |
304 | destroyed. */ | |
305 | rs->buf_size = rs->remote_packet_size; | |
306 | rs->buf = xmalloc (rs->buf_size); | |
307 | ||
d01949b6 AC |
308 | return rs; |
309 | } | |
310 | ||
ad10f812 AC |
311 | static struct packet_reg * |
312 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
313 | { | |
b323314b AC |
314 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
315 | return NULL; | |
316 | else | |
ad10f812 | 317 | { |
b323314b AC |
318 | struct packet_reg *r = &rs->regs[regnum]; |
319 | gdb_assert (r->regnum == regnum); | |
320 | return r; | |
ad10f812 | 321 | } |
ad10f812 AC |
322 | } |
323 | ||
324 | static struct packet_reg * | |
325 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
326 | { | |
b323314b AC |
327 | int i; |
328 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 329 | { |
b323314b AC |
330 | struct packet_reg *r = &rs->regs[i]; |
331 | if (r->pnum == pnum) | |
332 | return r; | |
ad10f812 AC |
333 | } |
334 | return NULL; | |
d01949b6 AC |
335 | } |
336 | ||
3c3bea1c GS |
337 | /* FIXME: graces/2002-08-08: These variables should eventually be |
338 | bound to an instance of the target object (as in gdbarch-tdep()), | |
339 | when such a thing exists. */ | |
340 | ||
341 | /* This is set to the data address of the access causing the target | |
342 | to stop for a watchpoint. */ | |
343 | static CORE_ADDR remote_watch_data_address; | |
344 | ||
94e08568 | 345 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
346 | static int remote_stopped_by_watchpoint_p; |
347 | ||
c906108c SS |
348 | static struct target_ops remote_ops; |
349 | ||
350 | static struct target_ops extended_remote_ops; | |
351 | ||
43ff13b4 | 352 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 353 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
354 | static struct target_ops remote_async_ops; |
355 | ||
356 | static struct target_ops extended_async_remote_ops; | |
357 | ||
6426a772 JM |
358 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
359 | ``forever'' still use the normal timeout mechanism. This is | |
360 | currently used by the ASYNC code to guarentee that target reads | |
361 | during the initial connect always time-out. Once getpkt has been | |
362 | modified to return a timeout indication and, in turn | |
363 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 364 | this can go away. */ |
6426a772 JM |
365 | static int wait_forever_enabled_p = 1; |
366 | ||
367 | ||
c906108c SS |
368 | /* This variable chooses whether to send a ^C or a break when the user |
369 | requests program interruption. Although ^C is usually what remote | |
370 | systems expect, and that is the default here, sometimes a break is | |
371 | preferable instead. */ | |
372 | ||
373 | static int remote_break; | |
374 | ||
c906108c SS |
375 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
376 | remote_open knows that we don't have a file open when the program | |
377 | starts. */ | |
819cc324 | 378 | static struct serial *remote_desc = NULL; |
c906108c | 379 | |
c906108c SS |
380 | /* This variable sets the number of bits in an address that are to be |
381 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
382 | leading zeros, the entire address would be sent. This variable | |
383 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
384 | initial implementation of remote.c restricted the address sent in | |
385 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
386 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
387 | address was never sent. Since fixing this bug may cause a break in | |
388 | some remote targets this variable is principly provided to | |
23860348 | 389 | facilitate backward compatibility. */ |
c906108c SS |
390 | |
391 | static int remote_address_size; | |
392 | ||
6426a772 JM |
393 | /* Tempoary to track who currently owns the terminal. See |
394 | target_async_terminal_* for more details. */ | |
395 | ||
396 | static int remote_async_terminal_ours_p; | |
397 | ||
11cf8741 | 398 | \f |
11cf8741 | 399 | /* User configurable variables for the number of characters in a |
24b06219 | 400 | memory read/write packet. MIN (rs->remote_packet_size, |
ad10f812 | 401 | rs->sizeof_g_packet) is the default. Some targets need smaller |
24b06219 | 402 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
403 | (speed up transfers). The variables ``preferred_*'' (the user |
404 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 405 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
406 | |
407 | struct memory_packet_config | |
408 | { | |
409 | char *name; | |
410 | long size; | |
411 | int fixed_p; | |
412 | }; | |
413 | ||
414 | /* Compute the current size of a read/write packet. Since this makes | |
415 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
416 | ||
417 | static long | |
418 | get_memory_packet_size (struct memory_packet_config *config) | |
419 | { | |
d01949b6 | 420 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
421 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
422 | law?) that some hosts don't cope very well with large alloca() | |
423 | calls. Eventually the alloca() code will be replaced by calls to | |
424 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 425 | be lifted or removed. */ |
11cf8741 JM |
426 | #ifndef MAX_REMOTE_PACKET_SIZE |
427 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
428 | #endif | |
3de11b2e | 429 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 430 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 431 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
432 | #endif |
433 | long what_they_get; | |
434 | if (config->fixed_p) | |
435 | { | |
436 | if (config->size <= 0) | |
437 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
438 | else | |
439 | what_they_get = config->size; | |
440 | } | |
441 | else | |
442 | { | |
24b06219 | 443 | what_they_get = rs->remote_packet_size; |
23860348 | 444 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
445 | if (config->size > 0 |
446 | && what_they_get > config->size) | |
447 | what_they_get = config->size; | |
23860348 | 448 | /* Limit it to the size of the targets ``g'' response. */ |
d01949b6 AC |
449 | if ((rs->actual_register_packet_size) > 0 |
450 | && what_they_get > (rs->actual_register_packet_size)) | |
451 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
452 | } |
453 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
454 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
455 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
456 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
457 | |
458 | /* Make sure there is room in the global buffer for this packet | |
459 | (including its trailing NUL byte). */ | |
460 | if (rs->buf_size < what_they_get + 1) | |
461 | { | |
462 | rs->buf_size = 2 * what_they_get; | |
463 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
464 | } | |
465 | ||
11cf8741 JM |
466 | return what_they_get; |
467 | } | |
468 | ||
469 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 470 | something really big then do a sanity check. */ |
11cf8741 JM |
471 | |
472 | static void | |
473 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
474 | { | |
475 | int fixed_p = config->fixed_p; | |
476 | long size = config->size; | |
477 | if (args == NULL) | |
8a3fe4f8 | 478 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
479 | else if (strcmp (args, "hard") == 0 |
480 | || strcmp (args, "fixed") == 0) | |
481 | fixed_p = 1; | |
482 | else if (strcmp (args, "soft") == 0 | |
483 | || strcmp (args, "limit") == 0) | |
484 | fixed_p = 0; | |
485 | else | |
486 | { | |
487 | char *end; | |
488 | size = strtoul (args, &end, 0); | |
489 | if (args == end) | |
8a3fe4f8 | 490 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
491 | #if 0 |
492 | /* Instead of explicitly capping the size of a packet to | |
493 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
494 | instead allowed to set the size to something arbitrarily | |
23860348 | 495 | large. */ |
11cf8741 | 496 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 497 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
498 | #endif |
499 | } | |
23860348 | 500 | /* Extra checks? */ |
11cf8741 JM |
501 | if (fixed_p && !config->fixed_p) |
502 | { | |
e2e0b3e5 AC |
503 | if (! query (_("The target may not be able to correctly handle a %s\n" |
504 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 505 | config->name, size)) |
8a3fe4f8 | 506 | error (_("Packet size not changed.")); |
11cf8741 | 507 | } |
23860348 | 508 | /* Update the config. */ |
11cf8741 JM |
509 | config->fixed_p = fixed_p; |
510 | config->size = size; | |
511 | } | |
512 | ||
513 | static void | |
514 | show_memory_packet_size (struct memory_packet_config *config) | |
515 | { | |
a3f17187 | 516 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 517 | if (config->fixed_p) |
a3f17187 | 518 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
519 | get_memory_packet_size (config)); |
520 | else | |
a3f17187 | 521 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
522 | get_memory_packet_size (config)); |
523 | } | |
524 | ||
525 | static struct memory_packet_config memory_write_packet_config = | |
526 | { | |
527 | "memory-write-packet-size", | |
528 | }; | |
529 | ||
530 | static void | |
531 | set_memory_write_packet_size (char *args, int from_tty) | |
532 | { | |
533 | set_memory_packet_size (args, &memory_write_packet_config); | |
534 | } | |
535 | ||
536 | static void | |
537 | show_memory_write_packet_size (char *args, int from_tty) | |
538 | { | |
539 | show_memory_packet_size (&memory_write_packet_config); | |
540 | } | |
541 | ||
542 | static long | |
543 | get_memory_write_packet_size (void) | |
544 | { | |
545 | return get_memory_packet_size (&memory_write_packet_config); | |
546 | } | |
547 | ||
548 | static struct memory_packet_config memory_read_packet_config = | |
549 | { | |
550 | "memory-read-packet-size", | |
551 | }; | |
552 | ||
553 | static void | |
554 | set_memory_read_packet_size (char *args, int from_tty) | |
555 | { | |
556 | set_memory_packet_size (args, &memory_read_packet_config); | |
557 | } | |
558 | ||
559 | static void | |
560 | show_memory_read_packet_size (char *args, int from_tty) | |
561 | { | |
562 | show_memory_packet_size (&memory_read_packet_config); | |
563 | } | |
564 | ||
565 | static long | |
566 | get_memory_read_packet_size (void) | |
567 | { | |
d01949b6 | 568 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
569 | long size = get_memory_packet_size (&memory_read_packet_config); |
570 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
571 | extra buffer size argument before the memory read size can be | |
24b06219 MK |
572 | increased beyond RS->remote_packet_size. */ |
573 | if (size > rs->remote_packet_size) | |
574 | size = rs->remote_packet_size; | |
11cf8741 JM |
575 | return size; |
576 | } | |
577 | ||
11cf8741 | 578 | \f |
5a2468f5 JM |
579 | /* Generic configuration support for packets the stub optionally |
580 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 581 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
582 | |
583 | enum packet_support | |
584 | { | |
585 | PACKET_SUPPORT_UNKNOWN = 0, | |
586 | PACKET_ENABLE, | |
587 | PACKET_DISABLE | |
588 | }; | |
589 | ||
5a2468f5 JM |
590 | struct packet_config |
591 | { | |
5a2468f5 JM |
592 | char *name; |
593 | char *title; | |
7f19b9a2 | 594 | enum auto_boolean detect; |
5a2468f5 JM |
595 | enum packet_support support; |
596 | }; | |
597 | ||
d471ea57 | 598 | /* Analyze a packet's return value and update the packet config |
23860348 | 599 | accordingly. */ |
d471ea57 AC |
600 | |
601 | enum packet_result | |
602 | { | |
603 | PACKET_ERROR, | |
604 | PACKET_OK, | |
605 | PACKET_UNKNOWN | |
606 | }; | |
607 | ||
5a2468f5 | 608 | static void |
d471ea57 | 609 | update_packet_config (struct packet_config *config) |
5a2468f5 | 610 | { |
d471ea57 AC |
611 | switch (config->detect) |
612 | { | |
7f19b9a2 | 613 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
614 | config->support = PACKET_ENABLE; |
615 | break; | |
7f19b9a2 | 616 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
617 | config->support = PACKET_DISABLE; |
618 | break; | |
7f19b9a2 | 619 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
620 | config->support = PACKET_SUPPORT_UNKNOWN; |
621 | break; | |
622 | } | |
5a2468f5 JM |
623 | } |
624 | ||
625 | static void | |
fba45db2 | 626 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
627 | { |
628 | char *support = "internal-error"; | |
629 | switch (config->support) | |
630 | { | |
631 | case PACKET_ENABLE: | |
632 | support = "enabled"; | |
633 | break; | |
634 | case PACKET_DISABLE: | |
635 | support = "disabled"; | |
636 | break; | |
637 | case PACKET_SUPPORT_UNKNOWN: | |
638 | support = "unknown"; | |
639 | break; | |
640 | } | |
641 | switch (config->detect) | |
642 | { | |
7f19b9a2 | 643 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
644 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
645 | config->name, support); | |
5a2468f5 | 646 | break; |
7f19b9a2 AC |
647 | case AUTO_BOOLEAN_TRUE: |
648 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
649 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
650 | config->name, support); | |
8e248173 | 651 | break; |
5a2468f5 JM |
652 | } |
653 | } | |
654 | ||
655 | static void | |
d471ea57 AC |
656 | add_packet_config_cmd (struct packet_config *config, |
657 | char *name, | |
658 | char *title, | |
e9e68a56 | 659 | cmd_sfunc_ftype *set_func, |
08546159 | 660 | show_value_ftype *show_func, |
d471ea57 AC |
661 | struct cmd_list_element **set_remote_list, |
662 | struct cmd_list_element **show_remote_list, | |
663 | int legacy) | |
664 | { | |
5a2468f5 JM |
665 | char *set_doc; |
666 | char *show_doc; | |
d471ea57 | 667 | char *cmd_name; |
3ed07be4 | 668 | |
5a2468f5 JM |
669 | config->name = name; |
670 | config->title = title; | |
7f19b9a2 | 671 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 672 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
673 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
674 | name, title); | |
675 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
676 | name, title); | |
d471ea57 | 677 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 678 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 679 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 680 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
e9e68a56 AC |
681 | set_func, show_func, |
682 | set_remote_list, show_remote_list); | |
23860348 | 683 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
684 | if (legacy) |
685 | { | |
686 | char *legacy_name; | |
b435e160 | 687 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
688 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
689 | set_remote_list); | |
690 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
691 | show_remote_list); | |
692 | } | |
5a2468f5 JM |
693 | } |
694 | ||
d471ea57 AC |
695 | static enum packet_result |
696 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 697 | { |
d471ea57 | 698 | if (buf[0] != '\0') |
5a2468f5 | 699 | { |
d471ea57 | 700 | /* The stub recognized the packet request. Check that the |
23860348 | 701 | operation succeeded. */ |
d471ea57 AC |
702 | switch (config->support) |
703 | { | |
704 | case PACKET_SUPPORT_UNKNOWN: | |
705 | if (remote_debug) | |
706 | fprintf_unfiltered (gdb_stdlog, | |
707 | "Packet %s (%s) is supported\n", | |
708 | config->name, config->title); | |
709 | config->support = PACKET_ENABLE; | |
710 | break; | |
711 | case PACKET_DISABLE: | |
8e65ff28 | 712 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 713 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
714 | break; |
715 | case PACKET_ENABLE: | |
716 | break; | |
717 | } | |
718 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
23860348 | 719 | /* "OK" - definitly OK. */ |
d471ea57 AC |
720 | return PACKET_OK; |
721 | if (buf[0] == 'E' | |
722 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
723 | && buf[3] == '\0') | |
23860348 | 724 | /* "Enn" - definitly an error. */ |
d471ea57 | 725 | return PACKET_ERROR; |
23860348 | 726 | /* The packet may or may not be OK. Just assume it is. */ |
d471ea57 AC |
727 | return PACKET_OK; |
728 | } | |
729 | else | |
730 | { | |
23860348 | 731 | /* The stub does not support the packet. */ |
d471ea57 AC |
732 | switch (config->support) |
733 | { | |
734 | case PACKET_ENABLE: | |
7f19b9a2 | 735 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 736 | /* If the stub previously indicated that the packet was |
23860348 | 737 | supported then there is a protocol error.. */ |
8a3fe4f8 | 738 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
739 | config->name, config->title); |
740 | else | |
23860348 | 741 | /* The user set it wrong. */ |
8a3fe4f8 | 742 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
743 | config->name, config->title); |
744 | break; | |
745 | case PACKET_SUPPORT_UNKNOWN: | |
746 | if (remote_debug) | |
747 | fprintf_unfiltered (gdb_stdlog, | |
748 | "Packet %s (%s) is NOT supported\n", | |
749 | config->name, config->title); | |
750 | config->support = PACKET_DISABLE; | |
751 | break; | |
752 | case PACKET_DISABLE: | |
753 | break; | |
754 | } | |
755 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
756 | } |
757 | } | |
758 | ||
444abaca DJ |
759 | enum { |
760 | PACKET_vCont = 0, | |
761 | PACKET_X, | |
762 | PACKET_qSymbol, | |
763 | PACKET_P, | |
764 | PACKET_p, | |
765 | PACKET_Z0, | |
766 | PACKET_Z1, | |
767 | PACKET_Z2, | |
768 | PACKET_Z3, | |
769 | PACKET_Z4, | |
770 | PACKET_qPart_auxv, | |
771 | PACKET_qGetTLSAddr, | |
772 | PACKET_MAX | |
773 | }; | |
506fb367 | 774 | |
444abaca | 775 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
776 | |
777 | static void | |
444abaca DJ |
778 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
779 | struct cmd_list_element *c) | |
dc8acb97 | 780 | { |
444abaca | 781 | struct packet_config *packet; |
dc8acb97 | 782 | |
444abaca DJ |
783 | for (packet = remote_protocol_packets; |
784 | packet < &remote_protocol_packets[PACKET_MAX]; | |
785 | packet++) | |
786 | { | |
787 | if (&packet->detect == c->var) | |
788 | { | |
789 | update_packet_config (packet); | |
790 | return; | |
791 | } | |
792 | } | |
793 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
794 | c->name); | |
dc8acb97 MS |
795 | } |
796 | ||
5a2468f5 | 797 | static void |
444abaca DJ |
798 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
799 | struct cmd_list_element *c, | |
800 | const char *value) | |
5a2468f5 | 801 | { |
444abaca | 802 | struct packet_config *packet; |
5a2468f5 | 803 | |
444abaca DJ |
804 | for (packet = remote_protocol_packets; |
805 | packet < &remote_protocol_packets[PACKET_MAX]; | |
806 | packet++) | |
807 | { | |
808 | if (&packet->detect == c->var) | |
809 | { | |
810 | show_packet_config_cmd (packet); | |
811 | return; | |
812 | } | |
813 | } | |
814 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
815 | c->name); | |
5a2468f5 JM |
816 | } |
817 | ||
d471ea57 AC |
818 | /* Should we try one of the 'Z' requests? */ |
819 | ||
820 | enum Z_packet_type | |
821 | { | |
822 | Z_PACKET_SOFTWARE_BP, | |
823 | Z_PACKET_HARDWARE_BP, | |
824 | Z_PACKET_WRITE_WP, | |
825 | Z_PACKET_READ_WP, | |
826 | Z_PACKET_ACCESS_WP, | |
827 | NR_Z_PACKET_TYPES | |
828 | }; | |
96baa820 | 829 | |
d471ea57 | 830 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 831 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 832 | |
7f19b9a2 | 833 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
834 | |
835 | static void | |
fba45db2 KB |
836 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
837 | struct cmd_list_element *c) | |
96baa820 | 838 | { |
d471ea57 AC |
839 | int i; |
840 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
841 | { | |
444abaca DJ |
842 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
843 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 844 | } |
96baa820 JM |
845 | } |
846 | ||
847 | static void | |
08546159 AC |
848 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
849 | struct cmd_list_element *c, | |
850 | const char *value) | |
96baa820 | 851 | { |
d471ea57 AC |
852 | int i; |
853 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
854 | { | |
444abaca | 855 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 856 | } |
96baa820 JM |
857 | } |
858 | ||
9d1f7ab2 MS |
859 | /* Should we try the 'ThreadInfo' query packet? |
860 | ||
861 | This variable (NOT available to the user: auto-detect only!) | |
862 | determines whether GDB will use the new, simpler "ThreadInfo" | |
863 | query or the older, more complex syntax for thread queries. | |
802188a7 | 864 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
865 | and set to false when the target fails to recognize it). */ |
866 | ||
867 | static int use_threadinfo_query; | |
868 | static int use_threadextra_query; | |
869 | ||
23860348 | 870 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
871 | static void *sigint_remote_twice_token; |
872 | static void *sigint_remote_token; | |
43ff13b4 | 873 | |
c906108c SS |
874 | /* These are pointers to hook functions that may be set in order to |
875 | modify resume/wait behavior for a particular architecture. */ | |
876 | ||
9a4105ab AC |
877 | void (*deprecated_target_resume_hook) (void); |
878 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
879 | \f |
880 | ||
c5aa993b | 881 | |
c906108c SS |
882 | /* These are the threads which we last sent to the remote system. |
883 | -1 for all or -2 for not sent yet. */ | |
884 | static int general_thread; | |
cce74817 | 885 | static int continue_thread; |
c906108c SS |
886 | |
887 | /* Call this function as a result of | |
888 | 1) A halt indication (T packet) containing a thread id | |
889 | 2) A direct query of currthread | |
890 | 3) Successful execution of set thread | |
891 | */ | |
892 | ||
893 | static void | |
fba45db2 | 894 | record_currthread (int currthread) |
c906108c | 895 | { |
c906108c | 896 | general_thread = currthread; |
cce74817 | 897 | |
c906108c SS |
898 | /* If this is a new thread, add it to GDB's thread list. |
899 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 900 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 901 | { |
39f77062 | 902 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 903 | ui_out_text (uiout, "[New "); |
39f77062 | 904 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 905 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 906 | } |
c906108c SS |
907 | } |
908 | ||
909 | #define MAGIC_NULL_PID 42000 | |
910 | ||
911 | static void | |
fba45db2 | 912 | set_thread (int th, int gen) |
c906108c | 913 | { |
d01949b6 | 914 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 915 | char *buf = rs->buf; |
cce74817 | 916 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
917 | |
918 | if (state == th) | |
919 | return; | |
920 | ||
921 | buf[0] = 'H'; | |
922 | buf[1] = gen ? 'g' : 'c'; | |
923 | if (th == MAGIC_NULL_PID) | |
924 | { | |
925 | buf[2] = '0'; | |
926 | buf[3] = '\0'; | |
927 | } | |
928 | else if (th < 0) | |
ecbc58df | 929 | xsnprintf (&buf[2], rs->remote_packet_size - 2, "-%x", -th); |
c906108c | 930 | else |
ecbc58df | 931 | xsnprintf (&buf[2], rs->remote_packet_size - 2, "%x", th); |
c906108c | 932 | putpkt (buf); |
6d820c5c | 933 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 934 | if (gen) |
c5aa993b | 935 | general_thread = th; |
c906108c | 936 | else |
cce74817 | 937 | continue_thread = th; |
c906108c SS |
938 | } |
939 | \f | |
940 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
941 | ||
942 | static int | |
39f77062 | 943 | remote_thread_alive (ptid_t ptid) |
c906108c | 944 | { |
6d820c5c | 945 | struct remote_state *rs = get_remote_state (); |
39f77062 | 946 | int tid = PIDGET (ptid); |
6d820c5c | 947 | char *buf = rs->buf; |
c906108c | 948 | |
cce74817 | 949 | if (tid < 0) |
6d820c5c | 950 | xsnprintf (buf, rs->remote_packet_size, "T-%08x", -tid); |
c906108c | 951 | else |
6d820c5c | 952 | xsnprintf (buf, rs->remote_packet_size, "T%08x", tid); |
c906108c | 953 | putpkt (buf); |
6d820c5c | 954 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
955 | return (buf[0] == 'O' && buf[1] == 'K'); |
956 | } | |
957 | ||
958 | /* About these extended threadlist and threadinfo packets. They are | |
959 | variable length packets but, the fields within them are often fixed | |
960 | length. They are redundent enough to send over UDP as is the | |
961 | remote protocol in general. There is a matching unit test module | |
962 | in libstub. */ | |
963 | ||
cce74817 JM |
964 | #define OPAQUETHREADBYTES 8 |
965 | ||
966 | /* a 64 bit opaque identifier */ | |
967 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
968 | ||
23860348 MS |
969 | /* WARNING: This threadref data structure comes from the remote O.S., |
970 | libstub protocol encoding, and remote.c. it is not particularly | |
971 | changable. */ | |
cce74817 JM |
972 | |
973 | /* Right now, the internal structure is int. We want it to be bigger. | |
974 | Plan to fix this. | |
c5aa993b | 975 | */ |
cce74817 | 976 | |
23860348 | 977 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 978 | |
9d1f7ab2 | 979 | /* gdb_ext_thread_info is an internal GDB data structure which is |
23860348 | 980 | equivalint to the reply of the remote threadinfo packet. */ |
cce74817 JM |
981 | |
982 | struct gdb_ext_thread_info | |
c5aa993b | 983 | { |
23860348 MS |
984 | threadref threadid; /* External form of thread reference. */ |
985 | int active; /* Has state interesting to GDB? | |
986 | regs, stack. */ | |
987 | char display[256]; /* Brief state display, name, | |
cedea757 | 988 | blocked/suspended. */ |
23860348 MS |
989 | char shortname[32]; /* To be used to name threads. */ |
990 | char more_display[256]; /* Long info, statistics, queue depth, | |
991 | whatever. */ | |
c5aa993b | 992 | }; |
cce74817 JM |
993 | |
994 | /* The volume of remote transfers can be limited by submitting | |
995 | a mask containing bits specifying the desired information. | |
996 | Use a union of these values as the 'selection' parameter to | |
997 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 998 | */ |
cce74817 JM |
999 | |
1000 | #define TAG_THREADID 1 | |
1001 | #define TAG_EXISTS 2 | |
1002 | #define TAG_DISPLAY 4 | |
1003 | #define TAG_THREADNAME 8 | |
c5aa993b | 1004 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1005 | |
23860348 | 1006 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1007 | |
b2dd6311 | 1008 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1009 | |
a14ed312 | 1010 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1011 | |
a14ed312 | 1012 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1013 | |
23860348 | 1014 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1015 | |
a14ed312 | 1016 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1017 | |
a14ed312 | 1018 | static char *pack_int (char *buf, int value); |
cce74817 | 1019 | |
a14ed312 | 1020 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1021 | |
a14ed312 | 1022 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1023 | |
23860348 | 1024 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1025 | |
23860348 | 1026 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1027 | |
23860348 | 1028 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1029 | |
23860348 | 1030 | static int threadref_to_int (threadref *ref); |
cce74817 | 1031 | |
23860348 | 1032 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1033 | |
23860348 | 1034 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1035 | |
23860348 MS |
1036 | static char *pack_threadinfo_request (char *pkt, int mode, |
1037 | threadref *id); | |
cce74817 | 1038 | |
a14ed312 | 1039 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1040 | threadref *expectedref, |
a14ed312 KB |
1041 | struct gdb_ext_thread_info |
1042 | *info); | |
cce74817 JM |
1043 | |
1044 | ||
23860348 MS |
1045 | static int remote_get_threadinfo (threadref *threadid, |
1046 | int fieldset, /*TAG mask */ | |
a14ed312 | 1047 | struct gdb_ext_thread_info *info); |
cce74817 | 1048 | |
a14ed312 KB |
1049 | static char *pack_threadlist_request (char *pkt, int startflag, |
1050 | int threadcount, | |
23860348 | 1051 | threadref *nextthread); |
cce74817 | 1052 | |
a14ed312 KB |
1053 | static int parse_threadlist_response (char *pkt, |
1054 | int result_limit, | |
23860348 MS |
1055 | threadref *original_echo, |
1056 | threadref *resultlist, | |
1057 | int *doneflag); | |
cce74817 | 1058 | |
a14ed312 | 1059 | static int remote_get_threadlist (int startflag, |
23860348 | 1060 | threadref *nextthread, |
a14ed312 KB |
1061 | int result_limit, |
1062 | int *done, | |
23860348 MS |
1063 | int *result_count, |
1064 | threadref *threadlist); | |
cce74817 | 1065 | |
23860348 | 1066 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1067 | |
a14ed312 KB |
1068 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1069 | void *context, int looplimit); | |
cce74817 | 1070 | |
23860348 | 1071 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1072 | |
23860348 | 1073 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1074 | |
1075 | static const char hexchars[] = "0123456789abcdef"; | |
1076 | ||
1077 | static int | |
fba45db2 | 1078 | ishex (int ch, int *val) |
c906108c SS |
1079 | { |
1080 | if ((ch >= 'a') && (ch <= 'f')) | |
1081 | { | |
1082 | *val = ch - 'a' + 10; | |
1083 | return 1; | |
1084 | } | |
1085 | if ((ch >= 'A') && (ch <= 'F')) | |
1086 | { | |
1087 | *val = ch - 'A' + 10; | |
1088 | return 1; | |
1089 | } | |
1090 | if ((ch >= '0') && (ch <= '9')) | |
1091 | { | |
1092 | *val = ch - '0'; | |
1093 | return 1; | |
1094 | } | |
1095 | return 0; | |
1096 | } | |
1097 | ||
1098 | static int | |
fba45db2 | 1099 | stubhex (int ch) |
c906108c SS |
1100 | { |
1101 | if (ch >= 'a' && ch <= 'f') | |
1102 | return ch - 'a' + 10; | |
1103 | if (ch >= '0' && ch <= '9') | |
1104 | return ch - '0'; | |
1105 | if (ch >= 'A' && ch <= 'F') | |
1106 | return ch - 'A' + 10; | |
1107 | return -1; | |
1108 | } | |
1109 | ||
1110 | static int | |
fba45db2 | 1111 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1112 | { |
1113 | int nibble; | |
1114 | int retval = 0; | |
1115 | ||
1116 | while (fieldlength) | |
1117 | { | |
1118 | nibble = stubhex (*buff++); | |
1119 | retval |= nibble; | |
1120 | fieldlength--; | |
1121 | if (fieldlength) | |
1122 | retval = retval << 4; | |
1123 | } | |
1124 | return retval; | |
1125 | } | |
1126 | ||
1127 | char * | |
fba45db2 | 1128 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1129 | ULONGEST *result) |
c906108c SS |
1130 | { |
1131 | int nibble; | |
1132 | int retval = 0; | |
1133 | ||
1134 | while (ishex (*buff, &nibble)) | |
1135 | { | |
1136 | buff++; | |
1137 | retval = retval << 4; | |
1138 | retval |= nibble & 0x0f; | |
1139 | } | |
1140 | *result = retval; | |
1141 | return buff; | |
1142 | } | |
1143 | ||
1144 | static char * | |
fba45db2 | 1145 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1146 | { |
1147 | ishex (*buf++, val); | |
1148 | return buf; | |
1149 | } | |
1150 | ||
1151 | static char * | |
fba45db2 | 1152 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1153 | { |
1154 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1155 | return buf; | |
1156 | } | |
1157 | ||
1158 | static char * | |
fba45db2 | 1159 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1160 | { |
1161 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1162 | *pkt++ = hexchars[(byte & 0xf)]; | |
1163 | return pkt; | |
1164 | } | |
1165 | ||
1166 | static char * | |
fba45db2 | 1167 | unpack_byte (char *buf, int *value) |
c906108c SS |
1168 | { |
1169 | *value = stub_unpack_int (buf, 2); | |
1170 | return buf + 2; | |
1171 | } | |
1172 | ||
1173 | static char * | |
fba45db2 | 1174 | pack_int (char *buf, int value) |
c906108c SS |
1175 | { |
1176 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1177 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1178 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1179 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1180 | return buf; | |
1181 | } | |
1182 | ||
1183 | static char * | |
fba45db2 | 1184 | unpack_int (char *buf, int *value) |
c906108c SS |
1185 | { |
1186 | *value = stub_unpack_int (buf, 8); | |
1187 | return buf + 8; | |
1188 | } | |
1189 | ||
23860348 | 1190 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1191 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1192 | |
1193 | static char * | |
fba45db2 | 1194 | pack_string (char *pkt, char *string) |
c906108c SS |
1195 | { |
1196 | char ch; | |
1197 | int len; | |
1198 | ||
1199 | len = strlen (string); | |
1200 | if (len > 200) | |
23860348 | 1201 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1202 | pkt = pack_hex_byte (pkt, len); |
1203 | while (len-- > 0) | |
1204 | { | |
1205 | ch = *string++; | |
1206 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1207 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1208 | *pkt++ = ch; |
1209 | } | |
1210 | return pkt; | |
1211 | } | |
1212 | #endif /* 0 (unused) */ | |
1213 | ||
1214 | static char * | |
fba45db2 | 1215 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1216 | { |
1217 | while (length--) | |
1218 | *dest++ = *src++; | |
1219 | *dest = '\0'; | |
1220 | return src; | |
1221 | } | |
1222 | ||
1223 | static char * | |
fba45db2 | 1224 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1225 | { |
1226 | char *limit; | |
1227 | unsigned char *altid; | |
1228 | ||
1229 | altid = (unsigned char *) id; | |
1230 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1231 | while (pkt < limit) | |
1232 | pkt = pack_hex_byte (pkt, *altid++); | |
1233 | return pkt; | |
1234 | } | |
1235 | ||
1236 | ||
1237 | static char * | |
fba45db2 | 1238 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1239 | { |
1240 | char *altref; | |
1241 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1242 | int x, y; | |
1243 | ||
1244 | altref = (char *) id; | |
1245 | ||
1246 | while (inbuf < limit) | |
1247 | { | |
1248 | x = stubhex (*inbuf++); | |
1249 | y = stubhex (*inbuf++); | |
1250 | *altref++ = (x << 4) | y; | |
1251 | } | |
1252 | return inbuf; | |
1253 | } | |
1254 | ||
1255 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1256 | ints. This is due to a mismatch of specifications. We would like | |
1257 | to use 64bit thread references internally. This is an adapter | |
1258 | function. */ | |
1259 | ||
1260 | void | |
fba45db2 | 1261 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1262 | { |
1263 | unsigned char *scan; | |
1264 | ||
1265 | scan = (unsigned char *) id; | |
1266 | { | |
1267 | int i = 4; | |
1268 | while (i--) | |
1269 | *scan++ = 0; | |
1270 | } | |
1271 | *scan++ = (value >> 24) & 0xff; | |
1272 | *scan++ = (value >> 16) & 0xff; | |
1273 | *scan++ = (value >> 8) & 0xff; | |
1274 | *scan++ = (value & 0xff); | |
1275 | } | |
1276 | ||
1277 | static int | |
fba45db2 | 1278 | threadref_to_int (threadref *ref) |
c906108c SS |
1279 | { |
1280 | int i, value = 0; | |
1281 | unsigned char *scan; | |
1282 | ||
cfd77fa1 | 1283 | scan = *ref; |
c906108c SS |
1284 | scan += 4; |
1285 | i = 4; | |
1286 | while (i-- > 0) | |
1287 | value = (value << 8) | ((*scan++) & 0xff); | |
1288 | return value; | |
1289 | } | |
1290 | ||
1291 | static void | |
fba45db2 | 1292 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1293 | { |
1294 | int i; | |
1295 | unsigned char *csrc, *cdest; | |
1296 | ||
1297 | csrc = (unsigned char *) src; | |
1298 | cdest = (unsigned char *) dest; | |
1299 | i = 8; | |
1300 | while (i--) | |
1301 | *cdest++ = *csrc++; | |
1302 | } | |
1303 | ||
1304 | static int | |
fba45db2 | 1305 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1306 | { |
23860348 | 1307 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1308 | #if 0 |
1309 | unsigned char *srcp, *destp; | |
1310 | int i, result; | |
1311 | srcp = (char *) src; | |
1312 | destp = (char *) dest; | |
1313 | ||
1314 | result = 1; | |
1315 | while (i-- > 0) | |
1316 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1317 | return result; | |
1318 | #endif | |
1319 | return 1; | |
1320 | } | |
1321 | ||
1322 | /* | |
c5aa993b JM |
1323 | threadid:1, # always request threadid |
1324 | context_exists:2, | |
1325 | display:4, | |
1326 | unique_name:8, | |
1327 | more_display:16 | |
1328 | */ | |
c906108c SS |
1329 | |
1330 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1331 | ||
1332 | static char * | |
fba45db2 | 1333 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1334 | { |
23860348 MS |
1335 | *pkt++ = 'q'; /* Info Query */ |
1336 | *pkt++ = 'P'; /* process or thread info */ | |
1337 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1338 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1339 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1340 | return pkt; |
1341 | } | |
1342 | ||
23860348 | 1343 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1344 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1345 | add more fields as time goes by. */ |
c906108c | 1346 | |
23860348 | 1347 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1348 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1349 | fetch registers and its stack? */ |
c5aa993b | 1350 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1351 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1352 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1353 | the process. */ |
c906108c SS |
1354 | |
1355 | static int | |
fba45db2 KB |
1356 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1357 | struct gdb_ext_thread_info *info) | |
c906108c | 1358 | { |
d01949b6 | 1359 | struct remote_state *rs = get_remote_state (); |
c906108c | 1360 | int mask, length; |
cfd77fa1 | 1361 | int tag; |
c906108c | 1362 | threadref ref; |
6d820c5c | 1363 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1364 | int retval = 1; |
1365 | ||
23860348 | 1366 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1367 | info->active = 0; |
1368 | info->display[0] = '\0'; | |
1369 | info->shortname[0] = '\0'; | |
1370 | info->more_display[0] = '\0'; | |
1371 | ||
23860348 MS |
1372 | /* Assume the characters indicating the packet type have been |
1373 | stripped. */ | |
c906108c SS |
1374 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1375 | pkt = unpack_threadid (pkt, &ref); | |
1376 | ||
1377 | if (mask == 0) | |
8a3fe4f8 | 1378 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1379 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1380 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1381 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1382 | return 0; |
1383 | } | |
1384 | copy_threadref (&info->threadid, &ref); | |
1385 | ||
23860348 | 1386 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1387 | |
23860348 MS |
1388 | /* Packets are terminated with nulls. */ |
1389 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1390 | { |
1391 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1392 | pkt = unpack_byte (pkt, &length); /* length */ |
1393 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1394 | { |
8a3fe4f8 | 1395 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1396 | retval = 0; |
1397 | break; | |
1398 | } | |
1399 | if (tag == TAG_THREADID) | |
1400 | { | |
1401 | if (length != 16) | |
1402 | { | |
8a3fe4f8 | 1403 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1404 | retval = 0; |
1405 | break; | |
1406 | } | |
1407 | pkt = unpack_threadid (pkt, &ref); | |
1408 | mask = mask & ~TAG_THREADID; | |
1409 | continue; | |
1410 | } | |
1411 | if (tag == TAG_EXISTS) | |
1412 | { | |
1413 | info->active = stub_unpack_int (pkt, length); | |
1414 | pkt += length; | |
1415 | mask = mask & ~(TAG_EXISTS); | |
1416 | if (length > 8) | |
1417 | { | |
8a3fe4f8 | 1418 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1419 | retval = 0; |
1420 | break; | |
1421 | } | |
1422 | continue; | |
1423 | } | |
1424 | if (tag == TAG_THREADNAME) | |
1425 | { | |
1426 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1427 | mask = mask & ~TAG_THREADNAME; | |
1428 | continue; | |
1429 | } | |
1430 | if (tag == TAG_DISPLAY) | |
1431 | { | |
1432 | pkt = unpack_string (pkt, &info->display[0], length); | |
1433 | mask = mask & ~TAG_DISPLAY; | |
1434 | continue; | |
1435 | } | |
1436 | if (tag == TAG_MOREDISPLAY) | |
1437 | { | |
1438 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1439 | mask = mask & ~TAG_MOREDISPLAY; | |
1440 | continue; | |
1441 | } | |
8a3fe4f8 | 1442 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1443 | break; /* Not a tag we know about. */ |
c906108c SS |
1444 | } |
1445 | return retval; | |
1446 | } | |
1447 | ||
1448 | static int | |
fba45db2 KB |
1449 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1450 | struct gdb_ext_thread_info *info) | |
c906108c | 1451 | { |
d01949b6 | 1452 | struct remote_state *rs = get_remote_state (); |
c906108c | 1453 | int result; |
6d820c5c | 1454 | char *threadinfo_pkt = rs->buf; |
c906108c SS |
1455 | |
1456 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1457 | putpkt (threadinfo_pkt); | |
6d820c5c | 1458 | getpkt (&rs->buf, &rs->buf_size, 0); |
23860348 MS |
1459 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, |
1460 | threadid, info); | |
c906108c SS |
1461 | return result; |
1462 | } | |
1463 | ||
c906108c SS |
1464 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1465 | ||
1466 | static char * | |
fba45db2 KB |
1467 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1468 | threadref *nextthread) | |
c906108c SS |
1469 | { |
1470 | *pkt++ = 'q'; /* info query packet */ | |
1471 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1472 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1473 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1474 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1475 | *pkt = '\0'; | |
1476 | return pkt; | |
1477 | } | |
1478 | ||
1479 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1480 | ||
1481 | static int | |
fba45db2 KB |
1482 | parse_threadlist_response (char *pkt, int result_limit, |
1483 | threadref *original_echo, threadref *resultlist, | |
1484 | int *doneflag) | |
c906108c | 1485 | { |
d01949b6 | 1486 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1487 | char *limit; |
1488 | int count, resultcount, done; | |
1489 | ||
1490 | resultcount = 0; | |
1491 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1492 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1493 | /* done parse past here */ |
c906108c SS |
1494 | pkt = unpack_byte (pkt, &count); /* count field */ |
1495 | pkt = unpack_nibble (pkt, &done); | |
1496 | /* The first threadid is the argument threadid. */ | |
1497 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1498 | while ((count-- > 0) && (pkt < limit)) | |
1499 | { | |
1500 | pkt = unpack_threadid (pkt, resultlist++); | |
1501 | if (resultcount++ >= result_limit) | |
1502 | break; | |
1503 | } | |
1504 | if (doneflag) | |
1505 | *doneflag = done; | |
1506 | return resultcount; | |
1507 | } | |
1508 | ||
1509 | static int | |
fba45db2 KB |
1510 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1511 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1512 | { |
d01949b6 | 1513 | struct remote_state *rs = get_remote_state (); |
c906108c | 1514 | static threadref echo_nextthread; |
6d820c5c | 1515 | char *threadlist_packet = rs->buf; |
c906108c SS |
1516 | int result = 1; |
1517 | ||
23860348 | 1518 | /* Trancate result limit to be smaller than the packet size. */ |
24b06219 MK |
1519 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= rs->remote_packet_size) |
1520 | result_limit = (rs->remote_packet_size / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1521 | |
6d820c5c DJ |
1522 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1523 | putpkt (rs->buf); | |
1524 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1525 | |
1526 | *result_count = | |
6d820c5c | 1527 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1528 | threadlist, done); |
1529 | ||
1530 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1531 | { | |
23860348 MS |
1532 | /* FIXME: This is a good reason to drop the packet. */ |
1533 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1534 | /* Possabilities : |
1535 | retransmit immediatly - race conditions | |
1536 | retransmit after timeout - yes | |
1537 | exit | |
1538 | wait for packet, then exit | |
1539 | */ | |
8a3fe4f8 | 1540 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1541 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1542 | } |
1543 | if (*result_count <= 0) | |
1544 | { | |
1545 | if (*done != 1) | |
1546 | { | |
8a3fe4f8 | 1547 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1548 | result = 0; |
1549 | } | |
1550 | return result; /* break; */ | |
1551 | } | |
1552 | if (*result_count > result_limit) | |
1553 | { | |
1554 | *result_count = 0; | |
8a3fe4f8 | 1555 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1556 | return 0; |
1557 | } | |
1558 | return result; | |
1559 | } | |
1560 | ||
23860348 MS |
1561 | /* This is the interface between remote and threads, remotes upper |
1562 | interface. */ | |
c906108c SS |
1563 | |
1564 | /* remote_find_new_threads retrieves the thread list and for each | |
1565 | thread in the list, looks up the thread in GDB's internal list, | |
1566 | ading the thread if it does not already exist. This involves | |
1567 | getting partial thread lists from the remote target so, polling the | |
1568 | quit_flag is required. */ | |
1569 | ||
1570 | ||
23860348 | 1571 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1572 | |
1573 | #define MAXTHREADLISTRESULTS 32 | |
1574 | ||
1575 | static int | |
fba45db2 KB |
1576 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1577 | int looplimit) | |
c906108c SS |
1578 | { |
1579 | int done, i, result_count; | |
1580 | int startflag = 1; | |
1581 | int result = 1; | |
1582 | int loopcount = 0; | |
1583 | static threadref nextthread; | |
1584 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1585 | ||
1586 | done = 0; | |
1587 | while (!done) | |
1588 | { | |
1589 | if (loopcount++ > looplimit) | |
1590 | { | |
1591 | result = 0; | |
8a3fe4f8 | 1592 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1593 | break; |
1594 | } | |
1595 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1596 | &done, &result_count, resultthreadlist)) | |
1597 | { | |
1598 | result = 0; | |
1599 | break; | |
1600 | } | |
23860348 | 1601 | /* Clear for later iterations. */ |
c906108c SS |
1602 | startflag = 0; |
1603 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1604 | if (result_count >= 1) | |
1605 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1606 | i = 0; | |
1607 | while (result_count--) | |
1608 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1609 | break; | |
1610 | } | |
1611 | return result; | |
1612 | } | |
1613 | ||
1614 | static int | |
fba45db2 | 1615 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1616 | { |
39f77062 | 1617 | ptid_t ptid; |
c906108c | 1618 | |
39f77062 KB |
1619 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1620 | ||
1621 | if (!in_thread_list (ptid)) | |
1622 | add_thread (ptid); | |
c906108c SS |
1623 | return 1; /* continue iterator */ |
1624 | } | |
1625 | ||
1626 | #define CRAZY_MAX_THREADS 1000 | |
1627 | ||
39f77062 KB |
1628 | static ptid_t |
1629 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1630 | { |
d01949b6 | 1631 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1632 | char *buf = rs->buf; |
c906108c SS |
1633 | |
1634 | putpkt ("qC"); | |
6d820c5c | 1635 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1636 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1637 | /* Use strtoul here, so we'll correctly parse values whose highest |
1638 | bit is set. The protocol carries them as a simple series of | |
1639 | hex digits; in the absence of a sign, strtol will see such | |
1640 | values as positive numbers out of range for signed 'long', and | |
1641 | return LONG_MAX to indicate an overflow. */ | |
1642 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1643 | else |
1644 | return oldpid; | |
1645 | } | |
1646 | ||
802188a7 RM |
1647 | /* Find new threads for info threads command. |
1648 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1649 | */ |
cce74817 JM |
1650 | |
1651 | static void | |
fba45db2 | 1652 | remote_find_new_threads (void) |
c906108c | 1653 | { |
c5aa993b JM |
1654 | remote_threadlist_iterator (remote_newthread_step, 0, |
1655 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1656 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1657 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1658 | } |
1659 | ||
9d1f7ab2 MS |
1660 | /* |
1661 | * Find all threads for info threads command. | |
1662 | * Uses new thread protocol contributed by Cisco. | |
1663 | * Falls back and attempts to use the older method (above) | |
1664 | * if the target doesn't respond to the new method. | |
1665 | */ | |
1666 | ||
0f71a2f6 JM |
1667 | static void |
1668 | remote_threads_info (void) | |
1669 | { | |
d01949b6 | 1670 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1671 | char *bufp; |
0f71a2f6 JM |
1672 | int tid; |
1673 | ||
1674 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1675 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1676 | |
9d1f7ab2 MS |
1677 | if (use_threadinfo_query) |
1678 | { | |
1679 | putpkt ("qfThreadInfo"); | |
6d820c5c DJ |
1680 | bufp = rs->buf; |
1681 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9d1f7ab2 | 1682 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1683 | { |
9d1f7ab2 MS |
1684 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1685 | { | |
1686 | do | |
1687 | { | |
c273b20f JB |
1688 | /* Use strtoul here, so we'll correctly parse values |
1689 | whose highest bit is set. The protocol carries | |
1690 | them as a simple series of hex digits; in the | |
1691 | absence of a sign, strtol will see such values as | |
1692 | positive numbers out of range for signed 'long', | |
1693 | and return LONG_MAX to indicate an overflow. */ | |
1694 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1695 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1696 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1697 | } |
1698 | while (*bufp++ == ','); /* comma-separated list */ | |
1699 | putpkt ("qsThreadInfo"); | |
6d820c5c DJ |
1700 | bufp = rs->buf; |
1701 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9d1f7ab2 MS |
1702 | } |
1703 | return; /* done */ | |
1704 | } | |
1705 | } | |
1706 | ||
23860348 | 1707 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1708 | use_threadinfo_query = 0; |
1709 | remote_find_new_threads (); | |
1710 | return; | |
1711 | } | |
1712 | ||
802188a7 | 1713 | /* |
9d1f7ab2 MS |
1714 | * Collect a descriptive string about the given thread. |
1715 | * The target may say anything it wants to about the thread | |
1716 | * (typically info about its blocked / runnable state, name, etc.). | |
1717 | * This string will appear in the info threads display. | |
802188a7 | 1718 | * |
9d1f7ab2 MS |
1719 | * Optional: targets are not required to implement this function. |
1720 | */ | |
1721 | ||
1722 | static char * | |
1723 | remote_threads_extra_info (struct thread_info *tp) | |
1724 | { | |
d01949b6 | 1725 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1726 | int result; |
1727 | int set; | |
1728 | threadref id; | |
1729 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1730 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1731 | int n = 0; /* position in display_buf */ |
1732 | ||
1733 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1734 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1735 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1736 | |
1737 | if (use_threadextra_query) | |
1738 | { | |
6d820c5c DJ |
1739 | char *bufp = rs->buf; |
1740 | ||
ecbc58df WZ |
1741 | xsnprintf (bufp, rs->remote_packet_size, "qThreadExtraInfo,%x", |
1742 | PIDGET (tp->ptid)); | |
9d1f7ab2 | 1743 | putpkt (bufp); |
6d820c5c | 1744 | getpkt (&rs->buf, &rs->buf_size, 0); |
9d1f7ab2 MS |
1745 | if (bufp[0] != 0) |
1746 | { | |
30559e10 | 1747 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
cfd77fa1 | 1748 | result = hex2bin (bufp, (gdb_byte *) display_buf, n); |
30559e10 | 1749 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1750 | return display_buf; |
1751 | } | |
0f71a2f6 | 1752 | } |
9d1f7ab2 MS |
1753 | |
1754 | /* If the above query fails, fall back to the old method. */ | |
1755 | use_threadextra_query = 0; | |
1756 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1757 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1758 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1759 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1760 | if (threadinfo.active) | |
0f71a2f6 | 1761 | { |
9d1f7ab2 | 1762 | if (*threadinfo.shortname) |
ecbc58df WZ |
1763 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
1764 | " Name: %s,", threadinfo.shortname); | |
9d1f7ab2 | 1765 | if (*threadinfo.display) |
ecbc58df WZ |
1766 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1767 | " State: %s,", threadinfo.display); | |
9d1f7ab2 | 1768 | if (*threadinfo.more_display) |
ecbc58df WZ |
1769 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1770 | " Priority: %s", threadinfo.more_display); | |
9d1f7ab2 MS |
1771 | |
1772 | if (n > 0) | |
c5aa993b | 1773 | { |
23860348 | 1774 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1775 | if (',' == display_buf[n-1]) |
1776 | display_buf[n-1] = ' '; | |
1777 | return display_buf; | |
c5aa993b | 1778 | } |
0f71a2f6 | 1779 | } |
9d1f7ab2 | 1780 | return NULL; |
0f71a2f6 | 1781 | } |
c906108c | 1782 | \f |
c5aa993b | 1783 | |
24b06219 | 1784 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1785 | |
1786 | static void | |
fba45db2 | 1787 | extended_remote_restart (void) |
c906108c | 1788 | { |
d01949b6 | 1789 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1790 | |
1791 | /* Send the restart command; for reasons I don't understand the | |
1792 | remote side really expects a number after the "R". */ | |
6d820c5c DJ |
1793 | xsnprintf (rs->buf, rs->remote_packet_size, "R%x", 0); |
1794 | putpkt (rs->buf); | |
c906108c SS |
1795 | |
1796 | /* Now query for status so this looks just like we restarted | |
1797 | gdbserver from scratch. */ | |
1798 | putpkt ("?"); | |
6d820c5c | 1799 | getpkt (&rs->buf, &rs->remote_packet_size, 0); |
c906108c SS |
1800 | } |
1801 | \f | |
1802 | /* Clean up connection to a remote debugger. */ | |
1803 | ||
c906108c | 1804 | static void |
fba45db2 | 1805 | remote_close (int quitting) |
c906108c SS |
1806 | { |
1807 | if (remote_desc) | |
2cd58942 | 1808 | serial_close (remote_desc); |
c906108c SS |
1809 | remote_desc = NULL; |
1810 | } | |
1811 | ||
23860348 | 1812 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1813 | |
1814 | static void | |
fba45db2 | 1815 | get_offsets (void) |
c906108c | 1816 | { |
d01949b6 | 1817 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1818 | char *buf = rs->buf; |
085dd6e6 | 1819 | char *ptr; |
c906108c SS |
1820 | int lose; |
1821 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1822 | struct section_offsets *offs; | |
1823 | ||
1824 | putpkt ("qOffsets"); | |
6d820c5c | 1825 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1826 | |
1827 | if (buf[0] == '\000') | |
1828 | return; /* Return silently. Stub doesn't support | |
23860348 | 1829 | this command. */ |
c906108c SS |
1830 | if (buf[0] == 'E') |
1831 | { | |
8a3fe4f8 | 1832 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1833 | return; |
1834 | } | |
1835 | ||
1836 | /* Pick up each field in turn. This used to be done with scanf, but | |
1837 | scanf will make trouble if CORE_ADDR size doesn't match | |
1838 | conversion directives correctly. The following code will work | |
1839 | with any size of CORE_ADDR. */ | |
1840 | text_addr = data_addr = bss_addr = 0; | |
1841 | ptr = buf; | |
1842 | lose = 0; | |
1843 | ||
1844 | if (strncmp (ptr, "Text=", 5) == 0) | |
1845 | { | |
1846 | ptr += 5; | |
1847 | /* Don't use strtol, could lose on big values. */ | |
1848 | while (*ptr && *ptr != ';') | |
1849 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1850 | } | |
1851 | else | |
1852 | lose = 1; | |
1853 | ||
1854 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1855 | { | |
1856 | ptr += 6; | |
1857 | while (*ptr && *ptr != ';') | |
1858 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1859 | } | |
1860 | else | |
1861 | lose = 1; | |
1862 | ||
1863 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1864 | { | |
1865 | ptr += 5; | |
1866 | while (*ptr && *ptr != ';') | |
1867 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1868 | } | |
1869 | else | |
1870 | lose = 1; | |
1871 | ||
1872 | if (lose) | |
8a3fe4f8 | 1873 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
1874 | |
1875 | if (symfile_objfile == NULL) | |
1876 | return; | |
1877 | ||
802188a7 | 1878 | offs = ((struct section_offsets *) |
a39a16c4 | 1879 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1880 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1881 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1882 | |
a4c8257b | 1883 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1884 | |
1885 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1886 | because that's what nlmconv does now. The real solution requires changes | |
1887 | to the stub and remote.c that I don't have time to do right now. */ | |
1888 | ||
a4c8257b EZ |
1889 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1890 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1891 | |
1892 | objfile_relocate (symfile_objfile, offs); | |
1893 | } | |
1894 | ||
1895 | /* Stub for catch_errors. */ | |
1896 | ||
0f71a2f6 | 1897 | static int |
36918e70 | 1898 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 1899 | { |
23860348 | 1900 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
1901 | /* NOTE: Return something >=0. A -ve value is reserved for |
1902 | catch_exceptions. */ | |
0f71a2f6 JM |
1903 | return 1; |
1904 | } | |
1905 | ||
9cbc821d | 1906 | static void |
36918e70 | 1907 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 1908 | { |
23860348 | 1909 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
1910 | |
1911 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 1912 | serial_write (remote_desc, "+", 1); |
c906108c SS |
1913 | |
1914 | /* Let the stub know that we want it to return the thread. */ | |
1915 | set_thread (-1, 0); | |
1916 | ||
39f77062 | 1917 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 1918 | |
23860348 | 1919 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 1920 | |
23860348 | 1921 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 1922 | immediate_quit--; |
c906108c | 1923 | |
9cbc821d | 1924 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
1925 | } |
1926 | ||
1927 | /* Open a connection to a remote debugger. | |
1928 | NAME is the filename used for communication. */ | |
1929 | ||
1930 | static void | |
fba45db2 | 1931 | remote_open (char *name, int from_tty) |
c906108c | 1932 | { |
92d1e331 | 1933 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
1934 | } |
1935 | ||
23860348 | 1936 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 1937 | static void |
fba45db2 | 1938 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 1939 | { |
92d1e331 | 1940 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
1941 | } |
1942 | ||
c906108c SS |
1943 | /* Open a connection to a remote debugger using the extended |
1944 | remote gdb protocol. NAME is the filename used for communication. */ | |
1945 | ||
1946 | static void | |
fba45db2 | 1947 | extended_remote_open (char *name, int from_tty) |
c906108c | 1948 | { |
92d1e331 DJ |
1949 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
1950 | 0 /* async_p */); | |
c906108c SS |
1951 | } |
1952 | ||
23860348 | 1953 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 1954 | static void |
fba45db2 | 1955 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 1956 | { |
92d1e331 DJ |
1957 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
1958 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
1959 | } |
1960 | ||
c906108c SS |
1961 | /* Generic code for opening a connection to a remote target. */ |
1962 | ||
d471ea57 AC |
1963 | static void |
1964 | init_all_packet_configs (void) | |
1965 | { | |
1966 | int i; | |
444abaca DJ |
1967 | for (i = 0; i < PACKET_MAX; i++) |
1968 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
1969 | } |
1970 | ||
23860348 | 1971 | /* Symbol look-up. */ |
dc8acb97 MS |
1972 | |
1973 | static void | |
1974 | remote_check_symbols (struct objfile *objfile) | |
1975 | { | |
d01949b6 | 1976 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
1977 | char *msg, *reply, *tmp; |
1978 | struct minimal_symbol *sym; | |
1979 | int end; | |
1980 | ||
444abaca | 1981 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
1982 | return; |
1983 | ||
6d820c5c DJ |
1984 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
1985 | because we need both at the same time. */ | |
1986 | msg = alloca (rs->remote_packet_size); | |
1987 | ||
1988 | reply = rs->buf; | |
dc8acb97 | 1989 | |
23860348 | 1990 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
1991 | |
1992 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
1993 | getpkt (&rs->buf, &rs->buf_size, 0); |
1994 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 MS |
1995 | |
1996 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
1997 | { | |
1998 | tmp = &reply[8]; | |
cfd77fa1 | 1999 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2000 | msg[end] = '\0'; |
2001 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2002 | if (sym == NULL) | |
ecbc58df | 2003 | xsnprintf (msg, rs->remote_packet_size, "qSymbol::%s", &reply[8]); |
dc8acb97 | 2004 | else |
ecbc58df WZ |
2005 | xsnprintf (msg, rs->remote_packet_size, "qSymbol:%s:%s", |
2006 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
2007 | &reply[8]); | |
dc8acb97 | 2008 | putpkt (msg); |
6d820c5c | 2009 | getpkt (&rs->buf, &rs->buf_size, 0); |
dc8acb97 MS |
2010 | } |
2011 | } | |
2012 | ||
9db8d71f DJ |
2013 | static struct serial * |
2014 | remote_serial_open (char *name) | |
2015 | { | |
2016 | static int udp_warning = 0; | |
2017 | ||
2018 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2019 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2020 | serial connection is reliable and not the serial connection promising | |
2021 | to be. */ | |
2022 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2023 | { | |
8a3fe4f8 AC |
2024 | warning (_("\ |
2025 | The remote protocol may be unreliable over UDP.\n\ | |
2026 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2027 | udp_warning = 1; |
2028 | } | |
2029 | ||
2030 | return serial_open (name); | |
2031 | } | |
2032 | ||
c906108c | 2033 | static void |
fba45db2 | 2034 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2035 | int extended_p, int async_p) |
c906108c | 2036 | { |
d01949b6 | 2037 | struct remote_state *rs = get_remote_state (); |
c906108c | 2038 | if (name == 0) |
8a3fe4f8 | 2039 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2040 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2041 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2042 | |
23860348 | 2043 | /* See FIXME above. */ |
92d1e331 DJ |
2044 | if (!async_p) |
2045 | wait_forever_enabled_p = 1; | |
6426a772 | 2046 | |
00cac895 DJ |
2047 | reopen_exec_file (); |
2048 | reread_symbols (); | |
2049 | ||
c906108c SS |
2050 | target_preopen (from_tty); |
2051 | ||
2052 | unpush_target (target); | |
2053 | ||
9db8d71f | 2054 | remote_desc = remote_serial_open (name); |
c906108c SS |
2055 | if (!remote_desc) |
2056 | perror_with_name (name); | |
2057 | ||
2058 | if (baud_rate != -1) | |
2059 | { | |
2cd58942 | 2060 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2061 | { |
9b74d5d3 KB |
2062 | /* The requested speed could not be set. Error out to |
2063 | top level after closing remote_desc. Take care to | |
2064 | set remote_desc to NULL to avoid closing remote_desc | |
2065 | more than once. */ | |
2cd58942 | 2066 | serial_close (remote_desc); |
9b74d5d3 | 2067 | remote_desc = NULL; |
c906108c SS |
2068 | perror_with_name (name); |
2069 | } | |
2070 | } | |
2071 | ||
2cd58942 | 2072 | serial_raw (remote_desc); |
c906108c SS |
2073 | |
2074 | /* If there is something sitting in the buffer we might take it as a | |
2075 | response to a command, which would be bad. */ | |
2cd58942 | 2076 | serial_flush_input (remote_desc); |
c906108c SS |
2077 | |
2078 | if (from_tty) | |
2079 | { | |
2080 | puts_filtered ("Remote debugging using "); | |
2081 | puts_filtered (name); | |
2082 | puts_filtered ("\n"); | |
2083 | } | |
23860348 | 2084 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2085 | |
d471ea57 | 2086 | init_all_packet_configs (); |
802188a7 | 2087 | |
c5aa993b | 2088 | general_thread = -2; |
cce74817 | 2089 | continue_thread = -2; |
c906108c | 2090 | |
9d1f7ab2 MS |
2091 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2092 | use_threadinfo_query = 1; | |
2093 | use_threadextra_query = 1; | |
2094 | ||
c906108c SS |
2095 | /* Without this, some commands which require an active target (such |
2096 | as kill) won't work. This variable serves (at least) double duty | |
2097 | as both the pid of the target process (if it has such), and as a | |
2098 | flag indicating that a target is active. These functions should | |
2099 | be split out into seperate variables, especially since GDB will | |
2100 | someday have a notion of debugging several processes. */ | |
2101 | ||
39f77062 | 2102 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2103 | |
2104 | if (async_p) | |
2105 | { | |
23860348 | 2106 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2107 | remote_async_terminal_ours_p = 1; |
2108 | ||
2109 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2110 | assumed that the target is already ready and able to respond to | |
2111 | requests. Unfortunately remote_start_remote() eventually calls | |
2112 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2113 | around this. Eventually a mechanism that allows | |
2114 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2115 | implemented. */ |
92d1e331 DJ |
2116 | wait_forever_enabled_p = 0; |
2117 | } | |
2118 | ||
23860348 | 2119 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2120 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2121 | |
36918e70 | 2122 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2123 | target (we'd otherwise be in an inconsistent state) and then |
2124 | propogate the error on up the exception chain. This ensures that | |
2125 | the caller doesn't stumble along blindly assuming that the | |
2126 | function succeeded. The CLI doesn't have this problem but other | |
2127 | UI's, such as MI do. | |
36918e70 AC |
2128 | |
2129 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2130 | this function should return an error indication letting the | |
ce2826aa | 2131 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2132 | ``target remote'' is directly wired to this function making that |
2133 | impossible. On a positive note, the CLI side of this problem has | |
2134 | been fixed - the function set_cmd_context() makes it possible for | |
2135 | all the ``target ....'' commands to share a common callback | |
2136 | function. See cli-dump.c. */ | |
109c3e39 AC |
2137 | { |
2138 | struct gdb_exception ex | |
2139 | = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); | |
2140 | if (ex.reason < 0) | |
2141 | { | |
2142 | pop_target (); | |
2143 | if (async_p) | |
2144 | wait_forever_enabled_p = 1; | |
2145 | throw_exception (ex); | |
2146 | } | |
2147 | } | |
c906108c | 2148 | |
92d1e331 DJ |
2149 | if (async_p) |
2150 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2151 | |
2152 | if (extended_p) | |
43ff13b4 | 2153 | { |
6240bebf | 2154 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2155 | putpkt ("!"); |
6d820c5c | 2156 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2157 | } |
a77053c2 | 2158 | |
9353355f | 2159 | post_create_inferior (¤t_target, from_tty); |
f78f6cf1 | 2160 | |
23860348 | 2161 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2162 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2163 | } |
2164 | ||
c906108c SS |
2165 | /* This takes a program previously attached to and detaches it. After |
2166 | this is done, GDB can be used to debug some other program. We | |
2167 | better not have left any breakpoints in the target program or it'll | |
2168 | die when it hits one. */ | |
2169 | ||
2170 | static void | |
fba45db2 | 2171 | remote_detach (char *args, int from_tty) |
c906108c | 2172 | { |
d01949b6 | 2173 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2174 | |
2175 | if (args) | |
8a3fe4f8 | 2176 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2177 | |
2178 | /* Tell the remote target to detach. */ | |
6d820c5c DJ |
2179 | strcpy (rs->buf, "D"); |
2180 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 2181 | |
23860348 | 2182 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2183 | if (target_is_async_p ()) |
2184 | serial_async (remote_desc, NULL, 0); | |
2185 | ||
cca728d0 | 2186 | target_mourn_inferior (); |
c906108c SS |
2187 | if (from_tty) |
2188 | puts_filtered ("Ending remote debugging.\n"); | |
2189 | } | |
2190 | ||
6ad8ae5c DJ |
2191 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2192 | ||
43ff13b4 | 2193 | static void |
6ad8ae5c | 2194 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2195 | { |
43ff13b4 | 2196 | if (args) |
8a3fe4f8 | 2197 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2198 | |
23860348 | 2199 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2200 | if (target_is_async_p ()) |
2cd58942 | 2201 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2202 | |
cca728d0 | 2203 | target_mourn_inferior (); |
43ff13b4 JM |
2204 | if (from_tty) |
2205 | puts_filtered ("Ending remote debugging.\n"); | |
2206 | } | |
2207 | ||
c906108c SS |
2208 | /* Convert hex digit A to a number. */ |
2209 | ||
30559e10 | 2210 | static int |
fba45db2 | 2211 | fromhex (int a) |
c906108c SS |
2212 | { |
2213 | if (a >= '0' && a <= '9') | |
2214 | return a - '0'; | |
2215 | else if (a >= 'a' && a <= 'f') | |
2216 | return a - 'a' + 10; | |
2217 | else if (a >= 'A' && a <= 'F') | |
2218 | return a - 'A' + 10; | |
c5aa993b | 2219 | else |
8a3fe4f8 | 2220 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2221 | } |
2222 | ||
30559e10 | 2223 | static int |
cfd77fa1 | 2224 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2225 | { |
2226 | int i; | |
2227 | ||
30559e10 MS |
2228 | for (i = 0; i < count; i++) |
2229 | { | |
2230 | if (hex[0] == 0 || hex[1] == 0) | |
2231 | { | |
2232 | /* Hex string is short, or of uneven length. | |
23860348 | 2233 | Return the count that has been converted so far. */ |
30559e10 MS |
2234 | return i; |
2235 | } | |
2236 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2237 | hex += 2; | |
2238 | } | |
2239 | return i; | |
2240 | } | |
2241 | ||
c906108c SS |
2242 | /* Convert number NIB to a hex digit. */ |
2243 | ||
2244 | static int | |
fba45db2 | 2245 | tohex (int nib) |
c906108c SS |
2246 | { |
2247 | if (nib < 10) | |
c5aa993b | 2248 | return '0' + nib; |
c906108c | 2249 | else |
c5aa993b | 2250 | return 'a' + nib - 10; |
c906108c | 2251 | } |
30559e10 MS |
2252 | |
2253 | static int | |
cfd77fa1 | 2254 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2255 | { |
2256 | int i; | |
23860348 | 2257 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2258 | if (count == 0) |
cfd77fa1 | 2259 | count = strlen ((char *) bin); |
30559e10 MS |
2260 | |
2261 | for (i = 0; i < count; i++) | |
2262 | { | |
2263 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2264 | *hex++ = tohex (*bin++ & 0xf); | |
2265 | } | |
2266 | *hex = 0; | |
2267 | return i; | |
2268 | } | |
c906108c | 2269 | \f |
506fb367 DJ |
2270 | /* Check for the availability of vCont. This function should also check |
2271 | the response. */ | |
c906108c SS |
2272 | |
2273 | static void | |
6d820c5c | 2274 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2275 | { |
6d820c5c DJ |
2276 | char *buf = rs->buf; |
2277 | ||
506fb367 DJ |
2278 | strcpy (buf, "vCont?"); |
2279 | putpkt (buf); | |
6d820c5c | 2280 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2281 | |
506fb367 DJ |
2282 | /* Make sure that the features we assume are supported. */ |
2283 | if (strncmp (buf, "vCont", 5) == 0) | |
2284 | { | |
2285 | char *p = &buf[5]; | |
2286 | int support_s, support_S, support_c, support_C; | |
2287 | ||
2288 | support_s = 0; | |
2289 | support_S = 0; | |
2290 | support_c = 0; | |
2291 | support_C = 0; | |
2292 | while (p && *p == ';') | |
2293 | { | |
2294 | p++; | |
2295 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2296 | support_s = 1; | |
2297 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2298 | support_S = 1; | |
2299 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2300 | support_c = 1; | |
2301 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2302 | support_C = 1; | |
2303 | ||
2304 | p = strchr (p, ';'); | |
2305 | } | |
c906108c | 2306 | |
506fb367 DJ |
2307 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2308 | BUF will make packet_ok disable the packet. */ | |
2309 | if (!support_s || !support_S || !support_c || !support_C) | |
2310 | buf[0] = 0; | |
2311 | } | |
c906108c | 2312 | |
444abaca | 2313 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2314 | } |
c906108c | 2315 | |
506fb367 DJ |
2316 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2317 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2318 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2319 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2320 | signalled is given in the global INFERIOR_PTID. This function returns | |
2321 | non-zero iff it resumes the inferior. | |
44eaed12 | 2322 | |
506fb367 DJ |
2323 | This function issues a strict subset of all possible vCont commands at the |
2324 | moment. */ | |
44eaed12 | 2325 | |
506fb367 DJ |
2326 | static int |
2327 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2328 | { | |
2329 | struct remote_state *rs = get_remote_state (); | |
2330 | int pid = PIDGET (ptid); | |
2963ee1d | 2331 | char *buf = NULL, *outbuf; |
506fb367 | 2332 | struct cleanup *old_cleanup; |
44eaed12 | 2333 | |
444abaca | 2334 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2335 | remote_vcont_probe (rs); |
44eaed12 | 2336 | |
444abaca | 2337 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2338 | return 0; |
44eaed12 | 2339 | |
506fb367 DJ |
2340 | /* If we could generate a wider range of packets, we'd have to worry |
2341 | about overflowing BUF. Should there be a generic | |
2342 | "multi-part-packet" packet? */ | |
2343 | ||
2344 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2345 | { |
506fb367 DJ |
2346 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2347 | don't have any PID numbers the inferior will understand. Make sure | |
2348 | to only send forms that do not specify a PID. */ | |
2349 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2350 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2351 | else if (step) |
2963ee1d | 2352 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2353 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2354 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2355 | else |
2963ee1d | 2356 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2357 | } |
2358 | else if (pid == -1) | |
2359 | { | |
2360 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2361 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2362 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2363 | PIDGET (inferior_ptid)); | |
506fb367 | 2364 | else if (step) |
2963ee1d | 2365 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2366 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2367 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2368 | PIDGET (inferior_ptid)); | |
506fb367 | 2369 | else |
2963ee1d | 2370 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2371 | } |
2372 | else | |
506fb367 DJ |
2373 | { |
2374 | /* Scheduler locking; resume only PTID. */ | |
2375 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2376 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2377 | else if (step) |
2963ee1d | 2378 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2379 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2380 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2381 | else |
2963ee1d | 2382 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2383 | } |
c906108c | 2384 | |
2963ee1d | 2385 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
6d820c5c | 2386 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2387 | |
2388 | putpkt (outbuf); | |
506fb367 DJ |
2389 | |
2390 | do_cleanups (old_cleanup); | |
2391 | ||
2392 | return 1; | |
c906108c | 2393 | } |
43ff13b4 | 2394 | |
506fb367 DJ |
2395 | /* Tell the remote machine to resume. */ |
2396 | ||
2397 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2398 | ||
2399 | static int last_sent_step; | |
2400 | ||
43ff13b4 | 2401 | static void |
506fb367 | 2402 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2403 | { |
d01949b6 | 2404 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 2405 | char *buf = rs->buf; |
39f77062 | 2406 | int pid = PIDGET (ptid); |
43ff13b4 | 2407 | |
43ff13b4 JM |
2408 | last_sent_signal = siggnal; |
2409 | last_sent_step = step; | |
2410 | ||
2411 | /* A hook for when we need to do something at the last moment before | |
2412 | resumption. */ | |
9a4105ab AC |
2413 | if (deprecated_target_resume_hook) |
2414 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2415 | |
506fb367 DJ |
2416 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2417 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2418 | return; | |
2419 | ||
2420 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2421 | if (pid == -1) | |
23860348 | 2422 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2423 | else |
23860348 | 2424 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2425 | |
43ff13b4 JM |
2426 | if (siggnal != TARGET_SIGNAL_0) |
2427 | { | |
2428 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2429 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2430 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2431 | buf[3] = '\0'; |
2432 | } | |
2433 | else | |
c5aa993b | 2434 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2435 | |
44eaed12 | 2436 | putpkt (buf); |
506fb367 DJ |
2437 | } |
2438 | ||
23860348 | 2439 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2440 | static void |
2441 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2442 | { | |
2443 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2444 | |
2acceee2 JM |
2445 | /* We are about to start executing the inferior, let's register it |
2446 | with the event loop. NOTE: this is the one place where all the | |
2447 | execution commands end up. We could alternatively do this in each | |
23860348 | 2448 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2449 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2450 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2451 | NOT asynchronously. */ |
362646f5 | 2452 | if (target_can_async_p ()) |
2acceee2 | 2453 | target_async (inferior_event_handler, 0); |
23860348 | 2454 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2455 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2456 | this? Instead, should the client of target just assume (for | |
2457 | async targets) that the target is going to start executing? Is | |
2458 | this information already found in the continuation block? */ | |
ed9a39eb | 2459 | if (target_is_async_p ()) |
2acceee2 | 2460 | target_executing = 1; |
43ff13b4 | 2461 | } |
c906108c | 2462 | \f |
43ff13b4 JM |
2463 | |
2464 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2465 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2466 | static void |
fba45db2 | 2467 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2468 | { |
c5aa993b | 2469 | sigint_remote_token = |
43ff13b4 JM |
2470 | create_async_signal_handler (async_remote_interrupt, NULL); |
2471 | signal (SIGINT, handle_remote_sigint); | |
2472 | } | |
2473 | ||
23860348 | 2474 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2475 | static void |
fba45db2 | 2476 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2477 | { |
2478 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2479 | sigint_remote_twice_token = |
43ff13b4 JM |
2480 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2481 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2482 | } | |
2483 | ||
2484 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2485 | sent once. It will take effect the second time that the user sends | |
23860348 | 2486 | a ^C. */ |
43ff13b4 | 2487 | static void |
fba45db2 | 2488 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2489 | { |
2490 | signal (sig, handle_sigint); | |
c5aa993b | 2491 | sigint_remote_twice_token = |
2df3850c | 2492 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2493 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2494 | } | |
2495 | ||
6426a772 | 2496 | /* Perform the real interruption of the target execution, in response |
23860348 | 2497 | to a ^C. */ |
c5aa993b | 2498 | static void |
fba45db2 | 2499 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2500 | { |
2501 | if (remote_debug) | |
2502 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2503 | ||
2504 | target_stop (); | |
2505 | } | |
2506 | ||
2507 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2508 | up on the target alltogether. */ |
2df3850c | 2509 | void |
fba45db2 | 2510 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2511 | { |
2df3850c JM |
2512 | if (remote_debug) |
2513 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2514 | /* Do something only if the target was not killed by the previous |
23860348 | 2515 | cntl-C. */ |
6426a772 JM |
2516 | if (target_executing) |
2517 | { | |
2518 | interrupt_query (); | |
2519 | signal (SIGINT, handle_remote_sigint); | |
2520 | } | |
43ff13b4 JM |
2521 | } |
2522 | ||
2523 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2524 | stopped. */ |
6426a772 JM |
2525 | static void |
2526 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2527 | { |
2528 | signal (SIGINT, handle_sigint); | |
2529 | if (sigint_remote_twice_token) | |
23860348 MS |
2530 | delete_async_signal_handler ((struct async_signal_handler **) |
2531 | &sigint_remote_twice_token); | |
43ff13b4 | 2532 | if (sigint_remote_token) |
23860348 MS |
2533 | delete_async_signal_handler ((struct async_signal_handler **) |
2534 | &sigint_remote_token); | |
43ff13b4 JM |
2535 | } |
2536 | ||
c906108c SS |
2537 | /* Send ^C to target to halt it. Target will respond, and send us a |
2538 | packet. */ | |
507f3c78 | 2539 | static void (*ofunc) (int); |
c906108c | 2540 | |
7a292a7a SS |
2541 | /* The command line interface's stop routine. This function is installed |
2542 | as a signal handler for SIGINT. The first time a user requests a | |
2543 | stop, we call remote_stop to send a break or ^C. If there is no | |
2544 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2545 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2546 | static void |
fba45db2 | 2547 | remote_interrupt (int signo) |
c906108c | 2548 | { |
23860348 | 2549 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2550 | signal (signo, remote_interrupt_twice); |
2551 | ||
2552 | if (remote_debug) | |
0f71a2f6 | 2553 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2554 | |
2555 | target_stop (); | |
2556 | } | |
2557 | ||
2558 | /* The user typed ^C twice. */ | |
2559 | ||
2560 | static void | |
fba45db2 | 2561 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2562 | { |
2563 | signal (signo, ofunc); | |
2564 | interrupt_query (); | |
c906108c SS |
2565 | signal (signo, remote_interrupt); |
2566 | } | |
7a292a7a SS |
2567 | |
2568 | /* This is the generic stop called via the target vector. When a target | |
2569 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2570 | will eventually end up here. */ |
c906108c | 2571 | static void |
fba45db2 | 2572 | remote_stop (void) |
c906108c | 2573 | { |
7a292a7a SS |
2574 | /* Send a break or a ^C, depending on user preference. */ |
2575 | if (remote_debug) | |
0f71a2f6 | 2576 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2577 | |
7a292a7a | 2578 | if (remote_break) |
2cd58942 | 2579 | serial_send_break (remote_desc); |
c906108c | 2580 | else |
2cd58942 | 2581 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2582 | } |
2583 | ||
2584 | /* Ask the user what to do when an interrupt is received. */ | |
2585 | ||
2586 | static void | |
fba45db2 | 2587 | interrupt_query (void) |
c906108c SS |
2588 | { |
2589 | target_terminal_ours (); | |
2590 | ||
2591 | if (query ("Interrupted while waiting for the program.\n\ | |
2592 | Give up (and stop debugging it)? ")) | |
2593 | { | |
2594 | target_mourn_inferior (); | |
315a522e | 2595 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2596 | } |
2597 | ||
2598 | target_terminal_inferior (); | |
2599 | } | |
2600 | ||
6426a772 JM |
2601 | /* Enable/disable target terminal ownership. Most targets can use |
2602 | terminal groups to control terminal ownership. Remote targets are | |
2603 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2604 | is required. */ |
6426a772 JM |
2605 | |
2606 | static void | |
2607 | remote_async_terminal_inferior (void) | |
2608 | { | |
2609 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2610 | sync_execution here. This function should only be called when | |
2611 | GDB is resuming the inferior in the forground. A background | |
2612 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2613 | consequently should not call this code. */ |
6426a772 JM |
2614 | if (!sync_execution) |
2615 | return; | |
2616 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2617 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2618 | to an asynchronous target with a synchronous command calls this | |
2619 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2620 | stops trying to transfer the terminal to the target when it | |
2621 | shouldn't this guard can go away. */ | |
2622 | if (!remote_async_terminal_ours_p) | |
2623 | return; | |
2624 | delete_file_handler (input_fd); | |
2625 | remote_async_terminal_ours_p = 0; | |
2626 | initialize_sigint_signal_handler (); | |
2627 | /* NOTE: At this point we could also register our selves as the | |
2628 | recipient of all input. Any characters typed could then be | |
23860348 | 2629 | passed on down to the target. */ |
6426a772 JM |
2630 | } |
2631 | ||
2632 | static void | |
2633 | remote_async_terminal_ours (void) | |
2634 | { | |
23860348 | 2635 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2636 | if (!sync_execution) |
2637 | return; | |
23860348 | 2638 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2639 | if (remote_async_terminal_ours_p) |
2640 | return; | |
2641 | cleanup_sigint_signal_handler (NULL); | |
2642 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2643 | remote_async_terminal_ours_p = 1; | |
2644 | } | |
2645 | ||
c906108c SS |
2646 | /* If nonzero, ignore the next kill. */ |
2647 | ||
2648 | int kill_kludge; | |
2649 | ||
2650 | void | |
917317f4 | 2651 | remote_console_output (char *msg) |
c906108c SS |
2652 | { |
2653 | char *p; | |
2654 | ||
c5aa993b | 2655 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2656 | { |
2657 | char tb[2]; | |
2658 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2659 | tb[0] = c; | |
2660 | tb[1] = 0; | |
43ff13b4 | 2661 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2662 | } |
917317f4 | 2663 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2664 | } |
2665 | ||
0f71a2f6 JM |
2666 | /* Wait until the remote machine stops, then return, |
2667 | storing status in STATUS just as `wait' would. | |
802188a7 | 2668 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2669 | remote OS, is the thread-id. */ |
c906108c | 2670 | |
39f77062 KB |
2671 | static ptid_t |
2672 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2673 | { |
d01949b6 | 2674 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 2675 | char *buf = rs->buf; |
b2dd6311 | 2676 | ULONGEST thread_num = -1; |
3c3bea1c | 2677 | ULONGEST addr; |
c906108c SS |
2678 | |
2679 | status->kind = TARGET_WAITKIND_EXITED; | |
2680 | status->value.integer = 0; | |
2681 | ||
2682 | while (1) | |
2683 | { | |
cfd77fa1 | 2684 | char *p; |
c906108c | 2685 | |
c906108c | 2686 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 2687 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
2688 | signal (SIGINT, ofunc); |
2689 | ||
2690 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2691 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2692 | if (deprecated_target_wait_loop_hook) |
2693 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2694 | |
3c3bea1c GS |
2695 | remote_stopped_by_watchpoint_p = 0; |
2696 | ||
c906108c SS |
2697 | switch (buf[0]) |
2698 | { | |
23860348 | 2699 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2700 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 2701 | continue; |
23860348 | 2702 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2703 | remote_fileio_request (buf); |
2704 | continue; | |
23860348 | 2705 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 2706 | { |
cfd77fa1 | 2707 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 2708 | |
23860348 | 2709 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 2710 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2711 | ss = signal number |
2712 | n... = register number | |
2713 | r... = register contents | |
2714 | */ | |
c906108c SS |
2715 | p = &buf[3]; /* after Txx */ |
2716 | ||
2717 | while (*p) | |
2718 | { | |
cfd77fa1 | 2719 | char *p1; |
c906108c | 2720 | char *p_temp; |
97345198 | 2721 | int fieldsize; |
3c3bea1c GS |
2722 | LONGEST pnum = 0; |
2723 | ||
23860348 MS |
2724 | /* If the packet contains a register number save it in |
2725 | pnum and set p1 to point to the character following | |
2726 | it. Otherwise p1 points to p. */ | |
c906108c | 2727 | |
23860348 MS |
2728 | /* If this packet is an awatch packet, don't parse the |
2729 | 'a' as a register number. */ | |
3c3bea1c GS |
2730 | |
2731 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2732 | { | |
2733 | /* Read the ``P'' register number. */ | |
2734 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2735 | p1 = p_temp; |
3c3bea1c | 2736 | } |
802188a7 | 2737 | else |
3c3bea1c | 2738 | p1 = p; |
c906108c | 2739 | |
23860348 | 2740 | if (p1 == p) /* No register number present here. */ |
c906108c | 2741 | { |
cfd77fa1 | 2742 | p1 = strchr (p, ':'); |
c906108c | 2743 | if (p1 == NULL) |
8a3fe4f8 AC |
2744 | warning (_("Malformed packet(a) (missing colon): %s\n\ |
2745 | Packet: '%s'\n"), | |
c906108c | 2746 | p, buf); |
3c3bea1c | 2747 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2748 | { |
2749 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2750 | record_currthread (thread_num); | |
cfd77fa1 | 2751 | p = p_temp; |
c906108c | 2752 | } |
3c3bea1c GS |
2753 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2754 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2755 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2756 | { | |
2757 | remote_stopped_by_watchpoint_p = 1; | |
2758 | p = unpack_varlen_hex (++p1, &addr); | |
2759 | remote_watch_data_address = (CORE_ADDR)addr; | |
2760 | } | |
2761 | else | |
2762 | { | |
2763 | /* Silently skip unknown optional info. */ | |
2764 | p_temp = strchr (p1 + 1, ';'); | |
2765 | if (p_temp) | |
cfd77fa1 | 2766 | p = p_temp; |
3c3bea1c | 2767 | } |
c906108c SS |
2768 | } |
2769 | else | |
2770 | { | |
ad10f812 | 2771 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2772 | p = p1; |
2773 | ||
2774 | if (*p++ != ':') | |
8a3fe4f8 AC |
2775 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2776 | Packet: '%s'\n"), | |
3fcb8548 | 2777 | p, buf); |
c906108c | 2778 | |
ad10f812 | 2779 | if (reg == NULL) |
8a3fe4f8 AC |
2780 | error (_("Remote sent bad register number %s: %s\n\ |
2781 | Packet: '%s'\n"), | |
3fcb8548 | 2782 | phex_nz (pnum, 0), p, buf); |
c906108c | 2783 | |
cfd77fa1 | 2784 | fieldsize = hex2bin (p, regs, |
23860348 MS |
2785 | register_size (current_gdbarch, |
2786 | reg->regnum)); | |
97345198 | 2787 | p += 2 * fieldsize; |
23860348 MS |
2788 | if (fieldsize < register_size (current_gdbarch, |
2789 | reg->regnum)) | |
8a3fe4f8 | 2790 | warning (_("Remote reply is too short: %s"), buf); |
23860348 MS |
2791 | regcache_raw_supply (current_regcache, |
2792 | reg->regnum, regs); | |
c906108c SS |
2793 | } |
2794 | ||
2795 | if (*p++ != ';') | |
8a3fe4f8 | 2796 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 2797 | buf, p); |
c906108c SS |
2798 | } |
2799 | } | |
2800 | /* fall through */ | |
23860348 | 2801 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
2802 | status->kind = TARGET_WAITKIND_STOPPED; |
2803 | status->value.sig = (enum target_signal) | |
2804 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2805 | ||
0f71a2f6 JM |
2806 | if (buf[3] == 'p') |
2807 | { | |
0f71a2f6 JM |
2808 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2809 | record_currthread (thread_num); | |
2810 | } | |
c906108c | 2811 | goto got_status; |
23860348 | 2812 | case 'W': /* Target exited. */ |
c906108c SS |
2813 | { |
2814 | /* The remote process exited. */ | |
2815 | status->kind = TARGET_WAITKIND_EXITED; | |
2816 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2817 | goto got_status; | |
2818 | } | |
2819 | case 'X': | |
2820 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2821 | status->value.sig = (enum target_signal) | |
2822 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2823 | kill_kludge = 1; | |
2824 | ||
2825 | goto got_status; | |
23860348 | 2826 | case 'O': /* Console output. */ |
c906108c SS |
2827 | remote_console_output (buf + 1); |
2828 | continue; | |
2829 | case '\0': | |
2830 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2831 | { | |
2832 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2833 | the remote system doesn't support it. */ |
c906108c SS |
2834 | target_terminal_ours_for_output (); |
2835 | printf_filtered | |
2836 | ("Can't send signals to this remote system. %s not sent.\n", | |
2837 | target_signal_to_name (last_sent_signal)); | |
2838 | last_sent_signal = TARGET_SIGNAL_0; | |
2839 | target_terminal_inferior (); | |
2840 | ||
2841 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2842 | putpkt ((char *) buf); | |
2843 | continue; | |
2844 | } | |
2845 | /* else fallthrough */ | |
2846 | default: | |
8a3fe4f8 | 2847 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
2848 | continue; |
2849 | } | |
2850 | } | |
c5aa993b | 2851 | got_status: |
c906108c SS |
2852 | if (thread_num != -1) |
2853 | { | |
39f77062 | 2854 | return pid_to_ptid (thread_num); |
c906108c | 2855 | } |
39f77062 | 2856 | return inferior_ptid; |
c906108c SS |
2857 | } |
2858 | ||
23860348 | 2859 | /* Async version of remote_wait. */ |
39f77062 KB |
2860 | static ptid_t |
2861 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 2862 | { |
d01949b6 | 2863 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 2864 | char *buf = rs->buf; |
b2dd6311 | 2865 | ULONGEST thread_num = -1; |
3c3bea1c | 2866 | ULONGEST addr; |
43ff13b4 JM |
2867 | |
2868 | status->kind = TARGET_WAITKIND_EXITED; | |
2869 | status->value.integer = 0; | |
2870 | ||
3c3bea1c GS |
2871 | remote_stopped_by_watchpoint_p = 0; |
2872 | ||
43ff13b4 JM |
2873 | while (1) |
2874 | { | |
cfd77fa1 | 2875 | char *p; |
c5aa993b | 2876 | |
ed9a39eb | 2877 | if (!target_is_async_p ()) |
43ff13b4 | 2878 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2879 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2880 | _never_ wait for ever -> test on target_is_async_p(). | |
2881 | However, before we do that we need to ensure that the caller | |
23860348 | 2882 | knows how to take the target into/out of async mode. */ |
6d820c5c | 2883 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 2884 | if (!target_is_async_p ()) |
43ff13b4 JM |
2885 | signal (SIGINT, ofunc); |
2886 | ||
2887 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2888 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2889 | if (deprecated_target_wait_loop_hook) |
2890 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
2891 | |
2892 | switch (buf[0]) | |
2893 | { | |
23860348 | 2894 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2895 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 2896 | continue; |
23860348 | 2897 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2898 | remote_fileio_request (buf); |
2899 | continue; | |
23860348 | 2900 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 2901 | { |
cfd77fa1 | 2902 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 2903 | |
23860348 | 2904 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 2905 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2906 | ss = signal number |
2907 | n... = register number | |
2908 | r... = register contents | |
2909 | */ | |
43ff13b4 JM |
2910 | p = &buf[3]; /* after Txx */ |
2911 | ||
2912 | while (*p) | |
2913 | { | |
cfd77fa1 | 2914 | char *p1; |
43ff13b4 | 2915 | char *p_temp; |
6c3f2dbf | 2916 | int fieldsize; |
3c3bea1c | 2917 | long pnum = 0; |
43ff13b4 | 2918 | |
23860348 MS |
2919 | /* If the packet contains a register number, save it |
2920 | in pnum and set p1 to point to the character | |
2921 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
2922 | |
2923 | /* If this packet is an awatch packet, don't parse the 'a' | |
2924 | as a register number. */ | |
802188a7 | 2925 | |
3c3bea1c GS |
2926 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
2927 | { | |
2928 | /* Read the register number. */ | |
2929 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2930 | p1 = p_temp; |
3c3bea1c | 2931 | } |
802188a7 | 2932 | else |
3c3bea1c | 2933 | p1 = p; |
43ff13b4 | 2934 | |
23860348 | 2935 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 2936 | { |
cfd77fa1 | 2937 | p1 = strchr (p, ':'); |
43ff13b4 | 2938 | if (p1 == NULL) |
8a3fe4f8 AC |
2939 | error (_("Malformed packet(a) (missing colon): %s\n\ |
2940 | Packet: '%s'\n"), | |
3fcb8548 | 2941 | p, buf); |
3c3bea1c | 2942 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
2943 | { |
2944 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2945 | record_currthread (thread_num); | |
cfd77fa1 | 2946 | p = p_temp; |
43ff13b4 | 2947 | } |
3c3bea1c GS |
2948 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2949 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2950 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2951 | { | |
2952 | remote_stopped_by_watchpoint_p = 1; | |
2953 | p = unpack_varlen_hex (++p1, &addr); | |
2954 | remote_watch_data_address = (CORE_ADDR)addr; | |
2955 | } | |
2956 | else | |
2957 | { | |
2958 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 2959 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
2960 | if (p_temp) |
2961 | p = p_temp; | |
2962 | } | |
43ff13b4 | 2963 | } |
802188a7 | 2964 | |
43ff13b4 JM |
2965 | else |
2966 | { | |
ad10f812 | 2967 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 2968 | p = p1; |
43ff13b4 | 2969 | if (*p++ != ':') |
8a3fe4f8 AC |
2970 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2971 | Packet: '%s'\n"), | |
3fcb8548 | 2972 | p, buf); |
43ff13b4 | 2973 | |
ad10f812 | 2974 | if (reg == NULL) |
8a3fe4f8 AC |
2975 | error (_("Remote sent bad register number %ld: %s\n\ |
2976 | Packet: '%s'\n"), | |
3fcb8548 | 2977 | pnum, p, buf); |
43ff13b4 | 2978 | |
cfd77fa1 | 2979 | fieldsize = hex2bin (p, regs, |
23860348 MS |
2980 | register_size (current_gdbarch, |
2981 | reg->regnum)); | |
6c3f2dbf | 2982 | p += 2 * fieldsize; |
23860348 MS |
2983 | if (fieldsize < register_size (current_gdbarch, |
2984 | reg->regnum)) | |
8a3fe4f8 | 2985 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 2986 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
2987 | } |
2988 | ||
2989 | if (*p++ != ';') | |
8a3fe4f8 | 2990 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 2991 | buf, p); |
43ff13b4 JM |
2992 | } |
2993 | } | |
2994 | /* fall through */ | |
23860348 | 2995 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
2996 | status->kind = TARGET_WAITKIND_STOPPED; |
2997 | status->value.sig = (enum target_signal) | |
2998 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2999 | ||
3000 | if (buf[3] == 'p') | |
3001 | { | |
43ff13b4 JM |
3002 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3003 | record_currthread (thread_num); | |
3004 | } | |
43ff13b4 | 3005 | goto got_status; |
23860348 | 3006 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3007 | { |
3008 | /* The remote process exited. */ | |
3009 | status->kind = TARGET_WAITKIND_EXITED; | |
3010 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3011 | goto got_status; | |
3012 | } | |
3013 | case 'X': | |
3014 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3015 | status->value.sig = (enum target_signal) | |
3016 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3017 | kill_kludge = 1; | |
3018 | ||
3019 | goto got_status; | |
23860348 | 3020 | case 'O': /* Console output. */ |
43ff13b4 | 3021 | remote_console_output (buf + 1); |
c4093a6a | 3022 | /* Return immediately to the event loop. The event loop will |
23860348 | 3023 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3024 | status->kind = TARGET_WAITKIND_IGNORE; |
3025 | goto got_status; | |
43ff13b4 JM |
3026 | case '\0': |
3027 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3028 | { | |
3029 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3030 | the remote system doesn't support it. */ |
43ff13b4 JM |
3031 | target_terminal_ours_for_output (); |
3032 | printf_filtered | |
3033 | ("Can't send signals to this remote system. %s not sent.\n", | |
3034 | target_signal_to_name (last_sent_signal)); | |
3035 | last_sent_signal = TARGET_SIGNAL_0; | |
3036 | target_terminal_inferior (); | |
3037 | ||
3038 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3039 | putpkt ((char *) buf); | |
3040 | continue; | |
3041 | } | |
3042 | /* else fallthrough */ | |
3043 | default: | |
8a3fe4f8 | 3044 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3045 | continue; |
3046 | } | |
3047 | } | |
c5aa993b | 3048 | got_status: |
43ff13b4 JM |
3049 | if (thread_num != -1) |
3050 | { | |
39f77062 | 3051 | return pid_to_ptid (thread_num); |
43ff13b4 | 3052 | } |
39f77062 | 3053 | return inferior_ptid; |
43ff13b4 JM |
3054 | } |
3055 | ||
c906108c SS |
3056 | /* Number of bytes of registers this stub implements. */ |
3057 | ||
3058 | static int register_bytes_found; | |
3059 | ||
3060 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3061 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3062 | |
b96ec7ac AC |
3063 | static int |
3064 | fetch_register_using_p (int regnum) | |
3065 | { | |
3066 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 3067 | char *buf = rs->buf, *p; |
b96ec7ac AC |
3068 | char regp[MAX_REGISTER_SIZE]; |
3069 | int i; | |
3070 | ||
fcad0fa4 JB |
3071 | p = buf; |
3072 | *p++ = 'p'; | |
3073 | p += hexnumstr (p, regnum); | |
3074 | *p++ = '\0'; | |
6d820c5c | 3075 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c JB |
3076 | |
3077 | /* If the stub didn't recognize the packet, or if we got an error, | |
3078 | tell our caller. */ | |
3079 | if (buf[0] == '\0' || buf[0] == 'E') | |
3080 | return 0; | |
3081 | ||
3082 | /* If this register is unfetchable, tell the regcache. */ | |
3083 | if (buf[0] == 'x') | |
8480adf2 | 3084 | { |
3f9a994c JB |
3085 | regcache_raw_supply (current_regcache, regnum, NULL); |
3086 | set_register_cached (regnum, -1); | |
8480adf2 | 3087 | return 1; |
b96ec7ac | 3088 | } |
b96ec7ac | 3089 | |
3f9a994c JB |
3090 | /* Otherwise, parse and supply the value. */ |
3091 | p = buf; | |
3092 | i = 0; | |
3093 | while (p[0] != 0) | |
3094 | { | |
3095 | if (p[1] == 0) | |
3096 | { | |
8a3fe4f8 | 3097 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3098 | return 0; |
3099 | } | |
3100 | ||
3101 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3102 | p += 2; | |
3103 | } | |
3104 | regcache_raw_supply (current_regcache, regnum, regp); | |
3105 | return 1; | |
b96ec7ac AC |
3106 | } |
3107 | ||
c906108c | 3108 | static void |
ad10f812 | 3109 | remote_fetch_registers (int regnum) |
c906108c | 3110 | { |
d01949b6 | 3111 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 3112 | char *buf = rs->buf; |
c906108c SS |
3113 | int i; |
3114 | char *p; | |
ad10f812 | 3115 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3116 | |
39f77062 | 3117 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3118 | |
b323314b AC |
3119 | if (regnum >= 0) |
3120 | { | |
3121 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3122 | gdb_assert (reg != NULL); | |
3123 | if (!reg->in_g_packet) | |
3124 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3125 | _("Attempt to fetch a non G-packet register when this " |
3126 | "remote.c does not support the p-packet.")); | |
b323314b | 3127 | } |
444abaca | 3128 | switch (remote_protocol_packets[PACKET_p].support) |
b96ec7ac AC |
3129 | { |
3130 | case PACKET_DISABLE: | |
3131 | break; | |
3132 | case PACKET_ENABLE: | |
3133 | if (fetch_register_using_p (regnum)) | |
3134 | return; | |
3135 | else | |
8a3fe4f8 | 3136 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3137 | case PACKET_SUPPORT_UNKNOWN: |
3138 | if (fetch_register_using_p (regnum)) | |
3139 | { | |
3140 | /* The stub recognized the 'p' packet. Remember this. */ | |
444abaca | 3141 | remote_protocol_packets[PACKET_p].support = PACKET_ENABLE; |
b96ec7ac AC |
3142 | return; |
3143 | } | |
3144 | else | |
3145 | { | |
3146 | /* The stub does not support the 'P' packet. Use 'G' | |
3147 | instead, and don't try using 'P' in the future (it | |
3148 | will just waste our time). */ | |
444abaca | 3149 | remote_protocol_packets[PACKET_p].support = PACKET_DISABLE; |
b96ec7ac AC |
3150 | break; |
3151 | } | |
3152 | } | |
b323314b | 3153 | |
c906108c | 3154 | sprintf (buf, "g"); |
6d820c5c | 3155 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3156 | |
11cf8741 JM |
3157 | /* Save the size of the packet sent to us by the target. Its used |
3158 | as a heuristic when determining the max size of packets that the | |
23860348 | 3159 | target can safely receive. */ |
d01949b6 AC |
3160 | if ((rs->actual_register_packet_size) == 0) |
3161 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3162 | |
3163 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3164 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3165 | |
3166 | /* We can get out of synch in various cases. If the first character | |
3167 | in the buffer is not a hex character, assume that has happened | |
3168 | and try to fetch another packet to read. */ | |
3169 | while ((buf[0] < '0' || buf[0] > '9') | |
3de11b2e | 3170 | && (buf[0] < 'A' || buf[0] > 'F') |
c906108c | 3171 | && (buf[0] < 'a' || buf[0] > 'f') |
23860348 | 3172 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3173 | { |
3174 | if (remote_debug) | |
0f71a2f6 JM |
3175 | fprintf_unfiltered (gdb_stdlog, |
3176 | "Bad register packet; fetching a new packet\n"); | |
6d820c5c | 3177 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
3178 | } |
3179 | ||
3180 | /* Reply describes registers byte by byte, each byte encoded as two | |
3181 | hex characters. Suck them all up, then supply them to the | |
3182 | register cacheing/storage mechanism. */ | |
3183 | ||
3184 | p = buf; | |
ad10f812 | 3185 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3186 | { |
3187 | if (p[0] == 0) | |
3188 | break; | |
3189 | if (p[1] == 0) | |
3190 | { | |
8a3fe4f8 | 3191 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3192 | /* Don't change register_bytes_found in this case, and don't |
3193 | print a second warning. */ | |
3194 | goto supply_them; | |
3195 | } | |
3196 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3197 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3198 | else |
3199 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3200 | p += 2; | |
3201 | } | |
3202 | ||
3203 | if (i != register_bytes_found) | |
3204 | { | |
3205 | register_bytes_found = i; | |
2649061d AC |
3206 | if (REGISTER_BYTES_OK_P () |
3207 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3208 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3209 | } |
c5aa993b | 3210 | |
b323314b | 3211 | supply_them: |
ad10f812 | 3212 | { |
b323314b AC |
3213 | int i; |
3214 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3215 | { |
b323314b AC |
3216 | struct packet_reg *r = &rs->regs[i]; |
3217 | if (r->in_g_packet) | |
3218 | { | |
8ccc1287 AC |
3219 | if (r->offset * 2 >= strlen (buf)) |
3220 | /* A short packet that didn't include the register's | |
3221 | value, this implies that the register is zero (and | |
3222 | not that the register is unavailable). Supply that | |
3223 | zero value. */ | |
3224 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3225 | else if (buf[r->offset * 2] == 'x') | |
3226 | { | |
3227 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3228 | /* The register isn't available, mark it as such (at | |
3229 | the same time setting the value to zero). */ | |
3230 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3231 | set_register_cached (i, -1); | |
3232 | } | |
3233 | else | |
3234 | regcache_raw_supply (current_regcache, r->regnum, | |
3235 | regs + r->offset); | |
b323314b | 3236 | } |
ad10f812 AC |
3237 | } |
3238 | } | |
c906108c SS |
3239 | } |
3240 | ||
3241 | /* Prepare to store registers. Since we may send them all (using a | |
3242 | 'G' request), we have to read out the ones we don't want to change | |
3243 | first. */ | |
3244 | ||
c5aa993b | 3245 | static void |
fba45db2 | 3246 | remote_prepare_to_store (void) |
c906108c | 3247 | { |
cf0e1e0d DJ |
3248 | struct remote_state *rs = get_remote_state (); |
3249 | int i; | |
cfd77fa1 | 3250 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3251 | |
c906108c | 3252 | /* Make sure the entire registers array is valid. */ |
444abaca | 3253 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3254 | { |
3255 | case PACKET_DISABLE: | |
3256 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3257 | /* Make sure all the necessary registers are cached. */ |
3258 | for (i = 0; i < NUM_REGS; i++) | |
3259 | if (rs->regs[i].in_g_packet) | |
3260 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3261 | break; |
3262 | case PACKET_ENABLE: | |
3263 | break; | |
3264 | } | |
3265 | } | |
3266 | ||
ad10f812 | 3267 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3268 | packet was not recognized. */ |
5a2468f5 JM |
3269 | |
3270 | static int | |
ad10f812 | 3271 | store_register_using_P (int regnum) |
5a2468f5 | 3272 | { |
d01949b6 | 3273 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3274 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3275 | /* Try storing a single register. */ |
6d820c5c | 3276 | char *buf = rs->buf; |
cfd77fa1 | 3277 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3278 | char *p; |
5a2468f5 | 3279 | |
ecbc58df | 3280 | xsnprintf (buf, rs->remote_packet_size, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3281 | p = buf + strlen (buf); |
822c9732 | 3282 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3283 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3284 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 JM |
3285 | |
3286 | return buf[0] != '\0'; | |
c906108c SS |
3287 | } |
3288 | ||
5a2468f5 | 3289 | |
23860348 MS |
3290 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3291 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3292 | |
3293 | static void | |
ad10f812 | 3294 | remote_store_registers (int regnum) |
c906108c | 3295 | { |
d01949b6 | 3296 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 3297 | gdb_byte *regs; |
c906108c SS |
3298 | char *p; |
3299 | ||
39f77062 | 3300 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3301 | |
ad10f812 | 3302 | if (regnum >= 0) |
c906108c | 3303 | { |
444abaca | 3304 | switch (remote_protocol_packets[PACKET_P].support) |
c906108c | 3305 | { |
5a2468f5 JM |
3306 | case PACKET_DISABLE: |
3307 | break; | |
3308 | case PACKET_ENABLE: | |
ad10f812 | 3309 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3310 | return; |
3311 | else | |
8a3fe4f8 | 3312 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3313 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3314 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3315 | { |
3316 | /* The stub recognized the 'P' packet. Remember this. */ | |
444abaca | 3317 | remote_protocol_packets[PACKET_P].support = PACKET_ENABLE; |
5a2468f5 JM |
3318 | return; |
3319 | } | |
3320 | else | |
3321 | { | |
3322 | /* The stub does not support the 'P' packet. Use 'G' | |
3323 | instead, and don't try using 'P' in the future (it | |
3324 | will just waste our time). */ | |
444abaca | 3325 | remote_protocol_packets[PACKET_P].support = PACKET_DISABLE; |
5a2468f5 JM |
3326 | break; |
3327 | } | |
c906108c | 3328 | } |
c906108c SS |
3329 | } |
3330 | ||
193cb69f AC |
3331 | /* Extract all the registers in the regcache copying them into a |
3332 | local buffer. */ | |
3333 | { | |
b323314b | 3334 | int i; |
ad10f812 | 3335 | regs = alloca (rs->sizeof_g_packet); |
170cd118 | 3336 | memset (regs, 0, rs->sizeof_g_packet); |
b323314b | 3337 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3338 | { |
b323314b AC |
3339 | struct packet_reg *r = &rs->regs[i]; |
3340 | if (r->in_g_packet) | |
822c9732 | 3341 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3342 | } |
3343 | } | |
c906108c SS |
3344 | |
3345 | /* Command describes registers byte by byte, | |
3346 | each byte encoded as two hex characters. */ | |
6d820c5c | 3347 | p = rs->buf; |
193cb69f | 3348 | *p++ = 'G'; |
c906108c | 3349 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3350 | bin2hex (regs, p, register_bytes_found); |
6d820c5c | 3351 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3352 | } |
c906108c SS |
3353 | \f |
3354 | ||
3355 | /* Return the number of hex digits in num. */ | |
3356 | ||
3357 | static int | |
fba45db2 | 3358 | hexnumlen (ULONGEST num) |
c906108c SS |
3359 | { |
3360 | int i; | |
3361 | ||
3362 | for (i = 0; num != 0; i++) | |
3363 | num >>= 4; | |
3364 | ||
3365 | return max (i, 1); | |
3366 | } | |
3367 | ||
2df3850c | 3368 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3369 | |
3370 | static int | |
fba45db2 | 3371 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3372 | { |
c906108c | 3373 | int len = hexnumlen (num); |
2df3850c JM |
3374 | return hexnumnstr (buf, num, len); |
3375 | } | |
3376 | ||
c906108c | 3377 | |
2df3850c | 3378 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3379 | |
2df3850c | 3380 | static int |
fba45db2 | 3381 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3382 | { |
3383 | int i; | |
3384 | ||
3385 | buf[width] = '\0'; | |
3386 | ||
3387 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3388 | { |
c5aa993b | 3389 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3390 | num >>= 4; |
3391 | } | |
3392 | ||
2df3850c | 3393 | return width; |
c906108c SS |
3394 | } |
3395 | ||
23860348 | 3396 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3397 | |
3398 | static CORE_ADDR | |
fba45db2 | 3399 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3400 | { |
3401 | if (remote_address_size > 0 | |
3402 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3403 | { | |
3404 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3405 | in a ULONGEST variable. */ |
c906108c SS |
3406 | ULONGEST mask = 1; |
3407 | mask = (mask << remote_address_size) - 1; | |
3408 | addr &= mask; | |
3409 | } | |
3410 | return addr; | |
3411 | } | |
3412 | ||
3413 | /* Determine whether the remote target supports binary downloading. | |
3414 | This is accomplished by sending a no-op memory write of zero length | |
3415 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3416 | the whole packet, since many stubs strip the eighth bit and |
3417 | subsequently compute a wrong checksum, which causes real havoc with | |
3418 | remote_write_bytes. | |
7a292a7a | 3419 | |
96baa820 JM |
3420 | NOTE: This can still lose if the serial line is not eight-bit |
3421 | clean. In cases like this, the user should clear "remote | |
23860348 | 3422 | X-packet". */ |
96baa820 | 3423 | |
c906108c | 3424 | static void |
fba45db2 | 3425 | check_binary_download (CORE_ADDR addr) |
c906108c | 3426 | { |
d01949b6 | 3427 | struct remote_state *rs = get_remote_state (); |
24b06219 | 3428 | |
444abaca | 3429 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3430 | { |
96baa820 JM |
3431 | case PACKET_DISABLE: |
3432 | break; | |
3433 | case PACKET_ENABLE: | |
3434 | break; | |
3435 | case PACKET_SUPPORT_UNKNOWN: | |
3436 | { | |
6d820c5c | 3437 | char *buf = rs->buf; |
96baa820 | 3438 | char *p; |
802188a7 | 3439 | |
96baa820 JM |
3440 | p = buf; |
3441 | *p++ = 'X'; | |
3442 | p += hexnumstr (p, (ULONGEST) addr); | |
3443 | *p++ = ','; | |
3444 | p += hexnumstr (p, (ULONGEST) 0); | |
3445 | *p++ = ':'; | |
3446 | *p = '\0'; | |
802188a7 | 3447 | |
96baa820 | 3448 | putpkt_binary (buf, (int) (p - buf)); |
6d820c5c | 3449 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3450 | |
96baa820 JM |
3451 | if (buf[0] == '\0') |
3452 | { | |
3453 | if (remote_debug) | |
3454 | fprintf_unfiltered (gdb_stdlog, | |
3455 | "binary downloading NOT suppported by target\n"); | |
444abaca | 3456 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
3457 | } |
3458 | else | |
3459 | { | |
3460 | if (remote_debug) | |
3461 | fprintf_unfiltered (gdb_stdlog, | |
3462 | "binary downloading suppported by target\n"); | |
444abaca | 3463 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
3464 | } |
3465 | break; | |
3466 | } | |
c906108c SS |
3467 | } |
3468 | } | |
3469 | ||
3470 | /* Write memory data directly to the remote machine. | |
3471 | This does not inform the data cache; the data cache uses this. | |
3472 | MEMADDR is the address in the remote memory space. | |
3473 | MYADDR is the address of the buffer in our space. | |
3474 | LEN is the number of bytes. | |
3475 | ||
917317f4 | 3476 | Returns number of bytes transferred, or 0 (setting errno) for |
23860348 | 3477 | error. Only transfer a single packet. */ |
c906108c | 3478 | |
449092f6 | 3479 | int |
cfd77fa1 | 3480 | remote_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3481 | { |
6d820c5c | 3482 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 DJ |
3483 | char *buf; |
3484 | char *p; | |
3485 | char *plen; | |
917317f4 JM |
3486 | int plenlen; |
3487 | int todo; | |
3488 | int nr_bytes; | |
a257b5bb | 3489 | int payload_size; |
cfd77fa1 | 3490 | char *payload_start; |
c906108c | 3491 | |
a257b5bb | 3492 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3493 | check_binary_download (memaddr); |
3494 | ||
3de11b2e NS |
3495 | payload_size = get_memory_write_packet_size (); |
3496 | ||
6d820c5c DJ |
3497 | /* The packet buffer will be large enough for the payload; |
3498 | get_memory_packet_size ensures this. */ | |
3499 | buf = rs->buf; | |
c906108c | 3500 | |
a257b5bb | 3501 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
3502 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
3503 | */ | |
3504 | payload_size -= strlen ("$M,:#NN"); | |
3505 | payload_size -= hexnumlen (memaddr); | |
c906108c | 3506 | |
a257b5bb | 3507 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3508 | |
a257b5bb | 3509 | /* Append "[XM]". Compute a best guess of the number of bytes |
23860348 | 3510 | actually transfered. */ |
a257b5bb | 3511 | p = buf; |
444abaca | 3512 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3513 | { |
917317f4 JM |
3514 | case PACKET_ENABLE: |
3515 | *p++ = 'X'; | |
23860348 | 3516 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3517 | todo = min (len, payload_size); |
3de11b2e NS |
3518 | payload_size -= hexnumlen (todo); |
3519 | todo = min (todo, payload_size); | |
917317f4 JM |
3520 | break; |
3521 | case PACKET_DISABLE: | |
3522 | *p++ = 'M'; | |
23860348 | 3523 | /* Num bytes that will fit. */ |
a257b5bb | 3524 | todo = min (len, payload_size / 2); |
3de11b2e NS |
3525 | payload_size -= hexnumlen (todo); |
3526 | todo = min (todo, payload_size / 2); | |
917317f4 JM |
3527 | break; |
3528 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3529 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3530 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3531 | default: |
e2e0b3e5 | 3532 | internal_error (__FILE__, __LINE__, _("bad switch")); |
917317f4 | 3533 | } |
3de11b2e NS |
3534 | if (todo <= 0) |
3535 | internal_error (__FILE__, __LINE__, | |
3536 | _("minumum packet size too small to write data")); | |
802188a7 | 3537 | |
a257b5bb | 3538 | /* Append "<memaddr>". */ |
917317f4 JM |
3539 | memaddr = remote_address_masked (memaddr); |
3540 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3541 | |
3542 | /* Append ",". */ | |
917317f4 | 3543 | *p++ = ','; |
802188a7 | 3544 | |
a257b5bb AC |
3545 | /* Append <len>. Retain the location/size of <len>. It may need to |
3546 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3547 | plen = p; |
3548 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3549 | p += plenlen; | |
a257b5bb AC |
3550 | |
3551 | /* Append ":". */ | |
917317f4 JM |
3552 | *p++ = ':'; |
3553 | *p = '\0'; | |
802188a7 | 3554 | |
a257b5bb AC |
3555 | /* Append the packet body. */ |
3556 | payload_start = p; | |
444abaca | 3557 | switch (remote_protocol_packets[PACKET_X].support) |
917317f4 JM |
3558 | { |
3559 | case PACKET_ENABLE: | |
3560 | /* Binary mode. Send target system values byte by byte, in | |
3561 | increasing byte addresses. Only escape certain critical | |
3562 | characters. */ | |
3563 | for (nr_bytes = 0; | |
a257b5bb | 3564 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3565 | nr_bytes++) |
c906108c | 3566 | { |
917317f4 JM |
3567 | switch (myaddr[nr_bytes] & 0xff) |
3568 | { | |
3569 | case '$': | |
3570 | case '#': | |
3571 | case 0x7d: | |
23860348 | 3572 | /* These must be escaped. */ |
917317f4 JM |
3573 | *p++ = 0x7d; |
3574 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3575 | break; | |
3576 | default: | |
3577 | *p++ = myaddr[nr_bytes] & 0xff; | |
3578 | break; | |
3579 | } | |
c906108c | 3580 | } |
917317f4 | 3581 | if (nr_bytes < todo) |
c906108c | 3582 | { |
802188a7 | 3583 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3584 | and we have actually sent fewer bytes than planned. |
3585 | Fix-up the length field of the packet. Use the same | |
3586 | number of characters as before. */ | |
917317f4 JM |
3587 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3588 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3589 | } |
917317f4 JM |
3590 | break; |
3591 | case PACKET_DISABLE: | |
3592 | /* Normal mode: Send target system values byte by byte, in | |
3593 | increasing byte addresses. Each byte is encoded as a two hex | |
3594 | value. */ | |
2644f393 | 3595 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3596 | p += 2 * nr_bytes; |
917317f4 JM |
3597 | break; |
3598 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3599 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3600 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3601 | default: |
e2e0b3e5 | 3602 | internal_error (__FILE__, __LINE__, _("bad switch")); |
c906108c | 3603 | } |
802188a7 | 3604 | |
917317f4 | 3605 | putpkt_binary (buf, (int) (p - buf)); |
6d820c5c | 3606 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 3607 | |
917317f4 JM |
3608 | if (buf[0] == 'E') |
3609 | { | |
3610 | /* There is no correspondance between what the remote protocol | |
3611 | uses for errors and errno codes. We would like a cleaner way | |
3612 | of representing errors (big enough to include errno codes, | |
3613 | bfd_error codes, and others). But for now just return EIO. */ | |
3614 | errno = EIO; | |
3615 | return 0; | |
3616 | } | |
802188a7 | 3617 | |
23860348 MS |
3618 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
3619 | fewer bytes than we'd planned. */ | |
917317f4 | 3620 | return nr_bytes; |
c906108c SS |
3621 | } |
3622 | ||
3623 | /* Read memory data directly from the remote machine. | |
3624 | This does not use the data cache; the data cache uses this. | |
3625 | MEMADDR is the address in the remote memory space. | |
3626 | MYADDR is the address of the buffer in our space. | |
3627 | LEN is the number of bytes. | |
3628 | ||
3629 | Returns number of bytes transferred, or 0 for error. */ | |
3630 | ||
917317f4 JM |
3631 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3632 | remote targets) shouldn't attempt to read the entire buffer. | |
3633 | Instead it should read a single packet worth of data and then | |
3634 | return the byte size of that packet to the caller. The caller (its | |
3635 | caller and its callers caller ;-) already contains code for | |
23860348 | 3636 | handling partial reads. */ |
917317f4 | 3637 | |
449092f6 | 3638 | int |
cfd77fa1 | 3639 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3640 | { |
6d820c5c | 3641 | struct remote_state *rs = get_remote_state (); |
11cf8741 | 3642 | char *buf; |
23860348 | 3643 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
3644 | int origlen; |
3645 | ||
11cf8741 | 3646 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
3647 | /* The packet buffer will be large enough for the payload; |
3648 | get_memory_packet_size ensures this. */ | |
3649 | buf = rs->buf; | |
c906108c SS |
3650 | |
3651 | origlen = len; | |
3652 | while (len > 0) | |
3653 | { | |
c906108c SS |
3654 | char *p; |
3655 | int todo; | |
3656 | int i; | |
3657 | ||
c5aa993b | 3658 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3659 | |
3660 | /* construct "m"<memaddr>","<len>" */ | |
3661 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3662 | memaddr = remote_address_masked (memaddr); | |
3663 | p = buf; | |
3664 | *p++ = 'm'; | |
3665 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3666 | *p++ = ','; | |
3667 | p += hexnumstr (p, (ULONGEST) todo); | |
3668 | *p = '\0'; | |
3669 | ||
3670 | putpkt (buf); | |
6d820c5c | 3671 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3672 | |
66504d44 MS |
3673 | if (buf[0] == 'E' |
3674 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3675 | && buf[3] == '\0') | |
c906108c | 3676 | { |
23860348 MS |
3677 | /* There is no correspondance between what the remote |
3678 | protocol uses for errors and errno codes. We would like | |
3679 | a cleaner way of representing errors (big enough to | |
3680 | include errno codes, bfd_error codes, and others). But | |
3681 | for now just return EIO. */ | |
c906108c SS |
3682 | errno = EIO; |
3683 | return 0; | |
3684 | } | |
3685 | ||
c5aa993b JM |
3686 | /* Reply describes memory byte by byte, |
3687 | each byte encoded as two hex characters. */ | |
c906108c SS |
3688 | |
3689 | p = buf; | |
30559e10 | 3690 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3691 | { |
30559e10 | 3692 | /* Reply is short. This means that we were able to read |
23860348 | 3693 | only part of what we wanted to. */ |
30559e10 | 3694 | return i + (origlen - len); |
c906108c SS |
3695 | } |
3696 | myaddr += todo; | |
3697 | memaddr += todo; | |
3698 | len -= todo; | |
3699 | } | |
3700 | return origlen; | |
3701 | } | |
3702 | \f | |
3703 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
3704 | transferring to or from debugger address BUFFER. Write to inferior |
3705 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
3706 | read; 0 for error. TARGET is unused. */ | |
392a587b | 3707 | |
c906108c | 3708 | static int |
961cb7b5 | 3709 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 3710 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3711 | struct target_ops *target) |
c906108c | 3712 | { |
392a587b JM |
3713 | CORE_ADDR targ_addr; |
3714 | int targ_len; | |
4930751a C |
3715 | int res; |
3716 | ||
f6684c31 | 3717 | /* Should this be the selected frame? */ |
23860348 MS |
3718 | gdbarch_remote_translate_xfer_address (current_gdbarch, |
3719 | current_regcache, | |
f6684c31 AC |
3720 | mem_addr, mem_len, |
3721 | &targ_addr, &targ_len); | |
392a587b | 3722 | if (targ_len <= 0) |
c906108c | 3723 | return 0; |
c906108c | 3724 | |
4930751a C |
3725 | if (should_write) |
3726 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3727 | else | |
3728 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3729 | ||
3730 | return res; | |
c906108c SS |
3731 | } |
3732 | ||
c906108c | 3733 | static void |
fba45db2 | 3734 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3735 | { |
3736 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3737 | } | |
3738 | \f | |
3739 | /* Stuff for dealing with the packets which are part of this protocol. | |
3740 | See comment at top of file for details. */ | |
3741 | ||
23860348 MS |
3742 | /* Read a single character from the remote end, masking it down to 7 |
3743 | bits. */ | |
c906108c SS |
3744 | |
3745 | static int | |
fba45db2 | 3746 | readchar (int timeout) |
c906108c SS |
3747 | { |
3748 | int ch; | |
3749 | ||
2cd58942 | 3750 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3751 | |
2acceee2 JM |
3752 | if (ch >= 0) |
3753 | return (ch & 0x7f); | |
3754 | ||
3755 | switch ((enum serial_rc) ch) | |
c906108c SS |
3756 | { |
3757 | case SERIAL_EOF: | |
2acceee2 | 3758 | target_mourn_inferior (); |
8a3fe4f8 | 3759 | error (_("Remote connection closed")); |
2acceee2 | 3760 | /* no return */ |
c906108c | 3761 | case SERIAL_ERROR: |
e2e0b3e5 | 3762 | perror_with_name (_("Remote communication error")); |
2acceee2 | 3763 | /* no return */ |
c906108c | 3764 | case SERIAL_TIMEOUT: |
2acceee2 | 3765 | break; |
c906108c | 3766 | } |
2acceee2 | 3767 | return ch; |
c906108c SS |
3768 | } |
3769 | ||
6d820c5c DJ |
3770 | /* Send the command in *BUF to the remote machine, and read the reply |
3771 | into *BUF. Report an error if we get an error reply. Resize | |
3772 | *BUF using xrealloc if necessary to hold the result, and update | |
3773 | *SIZEOF_BUF. */ | |
c906108c SS |
3774 | |
3775 | static void | |
6d820c5c DJ |
3776 | remote_send (char **buf, |
3777 | long *sizeof_buf) | |
c906108c | 3778 | { |
6d820c5c | 3779 | putpkt (*buf); |
c2d11a7d | 3780 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3781 | |
6d820c5c DJ |
3782 | if ((*buf)[0] == 'E') |
3783 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
3784 | } |
3785 | ||
3786 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3787 | string notation. */ | |
3788 | ||
3789 | static void | |
fba45db2 | 3790 | print_packet (char *buf) |
c906108c SS |
3791 | { |
3792 | puts_filtered ("\""); | |
43e526b9 | 3793 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3794 | puts_filtered ("\""); |
3795 | } | |
3796 | ||
3797 | int | |
fba45db2 | 3798 | putpkt (char *buf) |
c906108c SS |
3799 | { |
3800 | return putpkt_binary (buf, strlen (buf)); | |
3801 | } | |
3802 | ||
3803 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 3804 | of the packet is in BUF. The string in BUF can be at most |
24b06219 | 3805 | RS->remote_packet_size - 5 to account for the $, # and checksum, |
23860348 MS |
3806 | and for a possible /0 if we are debugging (remote_debug) and want |
3807 | to print the sent packet as a string. */ | |
c906108c SS |
3808 | |
3809 | static int | |
fba45db2 | 3810 | putpkt_binary (char *buf, int cnt) |
c906108c | 3811 | { |
d01949b6 | 3812 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3813 | int i; |
3814 | unsigned char csum = 0; | |
11cf8741 | 3815 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 3816 | |
c906108c SS |
3817 | int ch; |
3818 | int tcount = 0; | |
3819 | char *p; | |
3820 | ||
3821 | /* Copy the packet into buffer BUF2, encapsulating it | |
3822 | and giving it a checksum. */ | |
3823 | ||
c906108c SS |
3824 | p = buf2; |
3825 | *p++ = '$'; | |
3826 | ||
3827 | for (i = 0; i < cnt; i++) | |
3828 | { | |
3829 | csum += buf[i]; | |
3830 | *p++ = buf[i]; | |
3831 | } | |
3832 | *p++ = '#'; | |
3833 | *p++ = tohex ((csum >> 4) & 0xf); | |
3834 | *p++ = tohex (csum & 0xf); | |
3835 | ||
3836 | /* Send it over and over until we get a positive ack. */ | |
3837 | ||
3838 | while (1) | |
3839 | { | |
3840 | int started_error_output = 0; | |
3841 | ||
3842 | if (remote_debug) | |
3843 | { | |
3844 | *p = '\0'; | |
43e526b9 JM |
3845 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3846 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3847 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3848 | gdb_flush (gdb_stdlog); |
c906108c | 3849 | } |
2cd58942 | 3850 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 3851 | perror_with_name (_("putpkt: write failed")); |
c906108c | 3852 | |
23860348 | 3853 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
3854 | while (1) |
3855 | { | |
3856 | ch = readchar (remote_timeout); | |
3857 | ||
c5aa993b | 3858 | if (remote_debug) |
c906108c SS |
3859 | { |
3860 | switch (ch) | |
3861 | { | |
3862 | case '+': | |
1216fa2c | 3863 | case '-': |
c906108c SS |
3864 | case SERIAL_TIMEOUT: |
3865 | case '$': | |
3866 | if (started_error_output) | |
3867 | { | |
3868 | putchar_unfiltered ('\n'); | |
3869 | started_error_output = 0; | |
3870 | } | |
3871 | } | |
3872 | } | |
3873 | ||
3874 | switch (ch) | |
3875 | { | |
3876 | case '+': | |
3877 | if (remote_debug) | |
0f71a2f6 | 3878 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3879 | return 1; |
1216fa2c AC |
3880 | case '-': |
3881 | if (remote_debug) | |
3882 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3883 | case SERIAL_TIMEOUT: |
c5aa993b | 3884 | tcount++; |
c906108c SS |
3885 | if (tcount > 3) |
3886 | return 0; | |
23860348 | 3887 | break; /* Retransmit buffer. */ |
c906108c SS |
3888 | case '$': |
3889 | { | |
40e3f985 | 3890 | if (remote_debug) |
23860348 MS |
3891 | fprintf_unfiltered (gdb_stdlog, |
3892 | "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
3893 | /* It's probably an old response sent because an ACK |
3894 | was lost. Gobble up the packet and ack it so it | |
3895 | doesn't get retransmitted when we resend this | |
3896 | packet. */ | |
6d820c5c | 3897 | skip_frame (); |
d6f7abdf | 3898 | serial_write (remote_desc, "+", 1); |
23860348 | 3899 | continue; /* Now, go look for +. */ |
c906108c SS |
3900 | } |
3901 | default: | |
3902 | if (remote_debug) | |
3903 | { | |
3904 | if (!started_error_output) | |
3905 | { | |
3906 | started_error_output = 1; | |
0f71a2f6 | 3907 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3908 | } |
0f71a2f6 | 3909 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3910 | } |
3911 | continue; | |
3912 | } | |
23860348 | 3913 | break; /* Here to retransmit. */ |
c906108c SS |
3914 | } |
3915 | ||
3916 | #if 0 | |
3917 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3918 | able to get out next time we call QUIT, without anything as |
3919 | violent as interrupt_query. If we want to provide a way out of | |
3920 | here without getting to the next QUIT, it should be based on | |
3921 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3922 | if (quit_flag) |
3923 | { | |
3924 | quit_flag = 0; | |
3925 | interrupt_query (); | |
3926 | } | |
3927 | #endif | |
3928 | } | |
3929 | } | |
3930 | ||
6d820c5c DJ |
3931 | /* Come here after finding the start of a frame when we expected an |
3932 | ack. Do our best to discard the rest of this packet. */ | |
3933 | ||
3934 | static void | |
3935 | skip_frame (void) | |
3936 | { | |
3937 | int c; | |
3938 | ||
3939 | while (1) | |
3940 | { | |
3941 | c = readchar (remote_timeout); | |
3942 | switch (c) | |
3943 | { | |
3944 | case SERIAL_TIMEOUT: | |
3945 | /* Nothing we can do. */ | |
3946 | return; | |
3947 | case '#': | |
3948 | /* Discard the two bytes of checksum and stop. */ | |
3949 | c = readchar (remote_timeout); | |
3950 | if (c >= 0) | |
3951 | c = readchar (remote_timeout); | |
3952 | ||
3953 | return; | |
3954 | case '*': /* Run length encoding. */ | |
3955 | /* Discard the repeat count. */ | |
3956 | c = readchar (remote_timeout); | |
3957 | if (c < 0) | |
3958 | return; | |
3959 | break; | |
3960 | default: | |
3961 | /* A regular character. */ | |
3962 | break; | |
3963 | } | |
3964 | } | |
3965 | } | |
3966 | ||
c906108c | 3967 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
3968 | into *BUF, verifying the checksum, length, and handling run-length |
3969 | compression. NUL terminate the buffer. If there is not enough room, | |
3970 | expand *BUF using xrealloc. | |
c906108c | 3971 | |
c2d11a7d JM |
3972 | Returns -1 on error, number of characters in buffer (ignoring the |
3973 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 3974 | SERIAL status indications). */ |
c2d11a7d JM |
3975 | |
3976 | static long | |
6d820c5c DJ |
3977 | read_frame (char **buf_p, |
3978 | long *sizeof_buf) | |
c906108c SS |
3979 | { |
3980 | unsigned char csum; | |
c2d11a7d | 3981 | long bc; |
c906108c | 3982 | int c; |
6d820c5c | 3983 | char *buf = *buf_p; |
c906108c SS |
3984 | |
3985 | csum = 0; | |
c2d11a7d | 3986 | bc = 0; |
c906108c SS |
3987 | |
3988 | while (1) | |
3989 | { | |
3990 | c = readchar (remote_timeout); | |
c906108c SS |
3991 | switch (c) |
3992 | { | |
3993 | case SERIAL_TIMEOUT: | |
3994 | if (remote_debug) | |
0f71a2f6 | 3995 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 3996 | return -1; |
c906108c SS |
3997 | case '$': |
3998 | if (remote_debug) | |
0f71a2f6 JM |
3999 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4000 | gdb_stdlog); | |
23860348 | 4001 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4002 | case '#': |
4003 | { | |
4004 | unsigned char pktcsum; | |
e1b09194 AC |
4005 | int check_0 = 0; |
4006 | int check_1 = 0; | |
c906108c | 4007 | |
c2d11a7d | 4008 | buf[bc] = '\0'; |
c906108c | 4009 | |
e1b09194 AC |
4010 | check_0 = readchar (remote_timeout); |
4011 | if (check_0 >= 0) | |
4012 | check_1 = readchar (remote_timeout); | |
802188a7 | 4013 | |
e1b09194 AC |
4014 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4015 | { | |
4016 | if (remote_debug) | |
23860348 MS |
4017 | fputs_filtered ("Timeout in checksum, retrying\n", |
4018 | gdb_stdlog); | |
e1b09194 AC |
4019 | return -1; |
4020 | } | |
4021 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4022 | { |
4023 | if (remote_debug) | |
23860348 MS |
4024 | fputs_filtered ("Communication error in checksum\n", |
4025 | gdb_stdlog); | |
40e3f985 FN |
4026 | return -1; |
4027 | } | |
c906108c | 4028 | |
e1b09194 | 4029 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4030 | if (csum == pktcsum) |
c2d11a7d | 4031 | return bc; |
c906108c | 4032 | |
c5aa993b | 4033 | if (remote_debug) |
c906108c | 4034 | { |
0f71a2f6 | 4035 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4036 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4037 | pktcsum, csum); |
4038 | fputs_filtered (buf, gdb_stdlog); | |
4039 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4040 | } |
c2d11a7d | 4041 | /* Number of characters in buffer ignoring trailing |
23860348 | 4042 | NULL. */ |
c2d11a7d | 4043 | return -1; |
c906108c | 4044 | } |
23860348 | 4045 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4046 | { |
4047 | int repeat; | |
4048 | csum += c; | |
c906108c | 4049 | |
b4501125 AC |
4050 | c = readchar (remote_timeout); |
4051 | csum += c; | |
23860348 | 4052 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4053 | |
23860348 | 4054 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4055 | |
6d820c5c | 4056 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4057 | { |
6d820c5c DJ |
4058 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4059 | { | |
4060 | /* Make some more room in the buffer. */ | |
4061 | *sizeof_buf += repeat; | |
4062 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4063 | buf = *buf_p; | |
4064 | } | |
4065 | ||
c2d11a7d JM |
4066 | memset (&buf[bc], buf[bc - 1], repeat); |
4067 | bc += repeat; | |
c2c6d25f JM |
4068 | continue; |
4069 | } | |
4070 | ||
c2d11a7d | 4071 | buf[bc] = '\0'; |
6d820c5c | 4072 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4073 | return -1; |
c2c6d25f | 4074 | } |
c906108c | 4075 | default: |
6d820c5c | 4076 | if (bc >= *sizeof_buf - 1) |
c906108c | 4077 | { |
6d820c5c DJ |
4078 | /* Make some more room in the buffer. */ |
4079 | *sizeof_buf *= 2; | |
4080 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4081 | buf = *buf_p; | |
c906108c SS |
4082 | } |
4083 | ||
6d820c5c DJ |
4084 | buf[bc++] = c; |
4085 | csum += c; | |
4086 | continue; | |
c906108c SS |
4087 | } |
4088 | } | |
4089 | } | |
4090 | ||
4091 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4092 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4093 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4094 | rather than timing out; this is used (in synchronous mode) to wait | |
4095 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4096 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4097 | don't have to change all the calls to getpkt to deal with the | |
4098 | return value, because at the moment I don't know what the right | |
23860348 | 4099 | thing to do it for those. */ |
c906108c | 4100 | void |
6d820c5c DJ |
4101 | getpkt (char **buf, |
4102 | long *sizeof_buf, | |
c2d11a7d | 4103 | int forever) |
d9fcf2fb JM |
4104 | { |
4105 | int timed_out; | |
4106 | ||
4107 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4108 | } | |
4109 | ||
4110 | ||
4111 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4112 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4113 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4114 | rather than timing out; this is used (in synchronous mode) to wait | |
4115 | for a target that is is executing user code to stop. If FOREVER == | |
4116 | 0, this function is allowed to time out gracefully and return an | |
4117 | indication of this to the caller. */ | |
3172dc30 | 4118 | static int |
6d820c5c | 4119 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4120 | { |
4121 | int c; | |
4122 | int tries; | |
4123 | int timeout; | |
4124 | int val; | |
4125 | ||
6d820c5c | 4126 | strcpy (*buf, "timeout"); |
c906108c SS |
4127 | |
4128 | if (forever) | |
4129 | { | |
c906108c | 4130 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4131 | } |
4132 | ||
4133 | else | |
4134 | timeout = remote_timeout; | |
4135 | ||
4136 | #define MAX_TRIES 3 | |
4137 | ||
4138 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4139 | { | |
4140 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4141 | continuously, but if it pauses, we'll get a zero from |
4142 | readchar because of timeout. Then we'll count that as a | |
4143 | retry. */ | |
c906108c | 4144 | |
23860348 MS |
4145 | /* Note that we will only wait forever prior to the start of a |
4146 | packet. After that, we expect characters to arrive at a | |
4147 | brisk pace. They should show up within remote_timeout | |
4148 | intervals. */ | |
c906108c SS |
4149 | |
4150 | do | |
4151 | { | |
4152 | c = readchar (timeout); | |
4153 | ||
4154 | if (c == SERIAL_TIMEOUT) | |
4155 | { | |
23860348 | 4156 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4157 | { |
2acceee2 | 4158 | QUIT; |
c906108c | 4159 | target_mourn_inferior (); |
8a3fe4f8 | 4160 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4161 | } |
c906108c | 4162 | if (remote_debug) |
0f71a2f6 | 4163 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4164 | goto retry; |
4165 | } | |
4166 | } | |
4167 | while (c != '$'); | |
4168 | ||
4169 | /* We've found the start of a packet, now collect the data. */ | |
4170 | ||
c2d11a7d | 4171 | val = read_frame (buf, sizeof_buf); |
c906108c | 4172 | |
c2d11a7d | 4173 | if (val >= 0) |
c906108c SS |
4174 | { |
4175 | if (remote_debug) | |
43e526b9 JM |
4176 | { |
4177 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
6d820c5c | 4178 | fputstr_unfiltered (*buf, 0, gdb_stdlog); |
43e526b9 JM |
4179 | fprintf_unfiltered (gdb_stdlog, "\n"); |
4180 | } | |
2cd58942 | 4181 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4182 | return 0; |
c906108c SS |
4183 | } |
4184 | ||
4185 | /* Try the whole thing again. */ | |
4186 | retry: | |
2cd58942 | 4187 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4188 | } |
4189 | ||
23860348 MS |
4190 | /* We have tried hard enough, and just can't receive the packet. |
4191 | Give up. */ | |
c906108c | 4192 | |
a3f17187 | 4193 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4194 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4195 | return 1; |
c906108c SS |
4196 | } |
4197 | \f | |
4198 | static void | |
fba45db2 | 4199 | remote_kill (void) |
c906108c SS |
4200 | { |
4201 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4202 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4203 | if (kill_kludge) | |
4204 | { | |
4205 | kill_kludge = 0; | |
4206 | target_mourn_inferior (); | |
4207 | return; | |
4208 | } | |
4209 | ||
4210 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4211 | speaking terms with the remote system. */ | |
c5aa993b | 4212 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4213 | |
4214 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4215 | we do or not. For the existing stubs, kill is a noop. */ | |
4216 | target_mourn_inferior (); | |
4217 | } | |
4218 | ||
23860348 | 4219 | /* Async version of remote_kill. */ |
43ff13b4 | 4220 | static void |
fba45db2 | 4221 | remote_async_kill (void) |
43ff13b4 | 4222 | { |
23860348 | 4223 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4224 | if (target_is_async_p ()) |
2cd58942 | 4225 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4226 | |
4227 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4228 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4229 | if (kill_kludge) | |
4230 | { | |
4231 | kill_kludge = 0; | |
4232 | target_mourn_inferior (); | |
4233 | return; | |
4234 | } | |
4235 | ||
23860348 MS |
4236 | /* Use catch_errors so the user can quit from gdb even when we |
4237 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4238 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4239 | |
4240 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4241 | we do or not. For the existing stubs, kill is a noop. */ | |
4242 | target_mourn_inferior (); | |
4243 | } | |
4244 | ||
c906108c | 4245 | static void |
fba45db2 | 4246 | remote_mourn (void) |
c906108c SS |
4247 | { |
4248 | remote_mourn_1 (&remote_ops); | |
4249 | } | |
4250 | ||
53a5351d | 4251 | static void |
fba45db2 | 4252 | remote_async_mourn (void) |
53a5351d JM |
4253 | { |
4254 | remote_mourn_1 (&remote_async_ops); | |
4255 | } | |
4256 | ||
c906108c | 4257 | static void |
fba45db2 | 4258 | extended_remote_mourn (void) |
c906108c SS |
4259 | { |
4260 | /* We do _not_ want to mourn the target like this; this will | |
4261 | remove the extended remote target from the target stack, | |
802188a7 | 4262 | and the next time the user says "run" it'll fail. |
c906108c SS |
4263 | |
4264 | FIXME: What is the right thing to do here? */ | |
4265 | #if 0 | |
4266 | remote_mourn_1 (&extended_remote_ops); | |
4267 | #endif | |
4268 | } | |
4269 | ||
4270 | /* Worker function for remote_mourn. */ | |
4271 | static void | |
fba45db2 | 4272 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4273 | { |
4274 | unpush_target (target); | |
4275 | generic_mourn_inferior (); | |
4276 | } | |
4277 | ||
4278 | /* In the extended protocol we want to be able to do things like | |
4279 | "run" and have them basically work as expected. So we need | |
802188a7 | 4280 | a special create_inferior function. |
c906108c SS |
4281 | |
4282 | FIXME: One day add support for changing the exec file | |
4283 | we're debugging, arguments and an environment. */ | |
4284 | ||
4285 | static void | |
23860348 MS |
4286 | extended_remote_create_inferior (char *exec_file, char *args, |
4287 | char **env, int from_tty) | |
c906108c SS |
4288 | { |
4289 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4290 | the remote server. */ | |
4291 | remove_breakpoints (); | |
4292 | ||
4293 | /* Now restart the remote server. */ | |
4294 | extended_remote_restart (); | |
4295 | ||
4296 | /* Now put the breakpoints back in. This way we're safe if the | |
4297 | restart function works via a unix fork on the remote side. */ | |
4298 | insert_breakpoints (); | |
4299 | ||
4300 | /* Clean up from the last time we were running. */ | |
4301 | clear_proceed_status (); | |
c906108c SS |
4302 | } |
4303 | ||
23860348 | 4304 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4305 | static void |
23860348 MS |
4306 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4307 | char **env, int from_tty) | |
43ff13b4 JM |
4308 | { |
4309 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4310 | the remote server. */ | |
4311 | remove_breakpoints (); | |
4312 | ||
4313 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4314 | with the event loop. */ |
362646f5 | 4315 | if (target_can_async_p ()) |
2acceee2 | 4316 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4317 | |
4318 | /* Now restart the remote server. */ | |
4319 | extended_remote_restart (); | |
4320 | ||
4321 | /* Now put the breakpoints back in. This way we're safe if the | |
4322 | restart function works via a unix fork on the remote side. */ | |
4323 | insert_breakpoints (); | |
4324 | ||
4325 | /* Clean up from the last time we were running. */ | |
4326 | clear_proceed_status (); | |
43ff13b4 | 4327 | } |
c906108c | 4328 | \f |
c5aa993b | 4329 | |
aaab4dba | 4330 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4331 | instruction than other targets; in those use |
4332 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4333 | Also, bi-endian targets may define | |
4334 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4335 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4336 | just call the standard routines that are in mem-break.c. */ | |
4337 | ||
4338 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4339 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4340 | the ARCH-OS-tdep.c code can override the default. */ | |
4341 | ||
4342 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4343 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4344 | #endif |
4345 | ||
7fec2c59 | 4346 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4347 | |
4348 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4349 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4350 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4351 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4352 | #endif |
4353 | ||
7fec2c59 AC |
4354 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4355 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4356 | |
7fec2c59 | 4357 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4358 | |
aaab4dba AC |
4359 | /* Insert a breakpoint on targets that don't have any better |
4360 | breakpoint support. We read the contents of the target location | |
4361 | and stash it, then overwrite it with a breakpoint instruction. | |
4362 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4363 | is a pointer to memory allocated for saving the target contents. | |
4364 | It is guaranteed by the caller to be long enough to save the number | |
4365 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4366 | |
4367 | static int | |
5a168c78 | 4368 | remote_insert_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache) |
c906108c | 4369 | { |
d01949b6 | 4370 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4371 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4372 | int val; |
802188a7 | 4373 | #endif |
96baa820 JM |
4374 | int bp_size; |
4375 | ||
d471ea57 AC |
4376 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4377 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4378 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4379 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4380 | |
444abaca | 4381 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4382 | { |
6d820c5c | 4383 | char *p = rs->buf; |
802188a7 | 4384 | |
0caabb7e | 4385 | addr = remote_address_masked (addr); |
96baa820 JM |
4386 | *(p++) = 'Z'; |
4387 | *(p++) = '0'; | |
4388 | *(p++) = ','; | |
0caabb7e AC |
4389 | p += hexnumstr (p, (ULONGEST) addr); |
4390 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4391 | sprintf (p, ",%d", bp_size); |
802188a7 | 4392 | |
6d820c5c DJ |
4393 | putpkt (rs->buf); |
4394 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4395 | |
6d820c5c | 4396 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 4397 | { |
d471ea57 AC |
4398 | case PACKET_ERROR: |
4399 | return -1; | |
4400 | case PACKET_OK: | |
4401 | return 0; | |
4402 | case PACKET_UNKNOWN: | |
4403 | break; | |
96baa820 JM |
4404 | } |
4405 | } | |
c906108c | 4406 | |
802188a7 | 4407 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4408 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4409 | ||
4410 | if (val == 0) | |
4411 | { | |
d7449b42 | 4412 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4413 | val = target_write_memory (addr, (char *) big_break_insn, |
4414 | sizeof big_break_insn); | |
4415 | else | |
4416 | val = target_write_memory (addr, (char *) little_break_insn, | |
4417 | sizeof little_break_insn); | |
4418 | } | |
4419 | ||
4420 | return val; | |
4421 | #else | |
4422 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4423 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4424 | } |
4425 | ||
4426 | static int | |
5a168c78 | 4427 | remote_remove_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache) |
c906108c | 4428 | { |
d01949b6 | 4429 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4430 | int bp_size; |
4431 | ||
444abaca | 4432 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4433 | { |
6d820c5c | 4434 | char *p = rs->buf; |
802188a7 | 4435 | |
96baa820 JM |
4436 | *(p++) = 'z'; |
4437 | *(p++) = '0'; | |
4438 | *(p++) = ','; | |
4439 | ||
0caabb7e AC |
4440 | addr = remote_address_masked (addr); |
4441 | p += hexnumstr (p, (ULONGEST) addr); | |
4442 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4443 | sprintf (p, ",%d", bp_size); |
802188a7 | 4444 | |
6d820c5c DJ |
4445 | putpkt (rs->buf); |
4446 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4447 | |
6d820c5c | 4448 | return (rs->buf[0] == 'E'); |
96baa820 JM |
4449 | } |
4450 | ||
7fec2c59 | 4451 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4452 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4453 | #else | |
4454 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4455 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4456 | } |
4457 | ||
d471ea57 AC |
4458 | static int |
4459 | watchpoint_to_Z_packet (int type) | |
4460 | { | |
4461 | switch (type) | |
4462 | { | |
4463 | case hw_write: | |
bb858e6a | 4464 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
4465 | break; |
4466 | case hw_read: | |
bb858e6a | 4467 | return Z_PACKET_READ_WP; |
d471ea57 AC |
4468 | break; |
4469 | case hw_access: | |
bb858e6a | 4470 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
4471 | break; |
4472 | default: | |
8e65ff28 | 4473 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4474 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
4475 | } |
4476 | } | |
4477 | ||
3c3bea1c | 4478 | static int |
fba45db2 | 4479 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4480 | { |
d01949b6 | 4481 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 4482 | char *p; |
d471ea57 | 4483 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4484 | |
444abaca | 4485 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
8a3fe4f8 | 4486 | error (_("Can't set hardware watchpoints without the '%s' (%s) packet."), |
444abaca DJ |
4487 | remote_protocol_packets[PACKET_Z0 + packet].name, |
4488 | remote_protocol_packets[PACKET_Z0 + packet].title); | |
802188a7 | 4489 | |
6d820c5c DJ |
4490 | sprintf (rs->buf, "Z%x,", packet); |
4491 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
4492 | addr = remote_address_masked (addr); |
4493 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4494 | sprintf (p, ",%x", len); |
802188a7 | 4495 | |
6d820c5c DJ |
4496 | putpkt (rs->buf); |
4497 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4498 | |
6d820c5c | 4499 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4500 | { |
4501 | case PACKET_ERROR: | |
4502 | case PACKET_UNKNOWN: | |
4503 | return -1; | |
4504 | case PACKET_OK: | |
4505 | return 0; | |
4506 | } | |
8e65ff28 | 4507 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4508 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
4509 | } |
4510 | ||
d471ea57 | 4511 | |
3c3bea1c | 4512 | static int |
fba45db2 | 4513 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4514 | { |
d01949b6 | 4515 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 4516 | char *p; |
d471ea57 AC |
4517 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4518 | ||
444abaca | 4519 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
8a3fe4f8 | 4520 | error (_("Can't clear hardware watchpoints without the '%s' (%s) packet."), |
444abaca DJ |
4521 | remote_protocol_packets[PACKET_Z0 + packet].name, |
4522 | remote_protocol_packets[PACKET_Z0 + packet].title); | |
802188a7 | 4523 | |
6d820c5c DJ |
4524 | sprintf (rs->buf, "z%x,", packet); |
4525 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
4526 | addr = remote_address_masked (addr); |
4527 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4528 | sprintf (p, ",%x", len); |
6d820c5c DJ |
4529 | putpkt (rs->buf); |
4530 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4531 | |
6d820c5c | 4532 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4533 | { |
4534 | case PACKET_ERROR: | |
4535 | case PACKET_UNKNOWN: | |
4536 | return -1; | |
4537 | case PACKET_OK: | |
4538 | return 0; | |
4539 | } | |
8e65ff28 | 4540 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4541 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
4542 | } |
4543 | ||
3c3bea1c | 4544 | |
501eef12 AC |
4545 | int remote_hw_watchpoint_limit = -1; |
4546 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4547 | |
b9362cc7 | 4548 | static int |
3c3bea1c | 4549 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4550 | { |
3c3bea1c GS |
4551 | if (type == bp_hardware_breakpoint) |
4552 | { | |
4553 | if (remote_hw_breakpoint_limit == 0) | |
4554 | return 0; | |
501eef12 AC |
4555 | else if (remote_hw_breakpoint_limit < 0) |
4556 | return 1; | |
3c3bea1c GS |
4557 | else if (cnt <= remote_hw_breakpoint_limit) |
4558 | return 1; | |
4559 | } | |
4560 | else | |
4561 | { | |
4562 | if (remote_hw_watchpoint_limit == 0) | |
4563 | return 0; | |
501eef12 AC |
4564 | else if (remote_hw_watchpoint_limit < 0) |
4565 | return 1; | |
3c3bea1c GS |
4566 | else if (ot) |
4567 | return -1; | |
4568 | else if (cnt <= remote_hw_watchpoint_limit) | |
4569 | return 1; | |
4570 | } | |
4571 | return -1; | |
4572 | } | |
4573 | ||
b9362cc7 | 4574 | static int |
3c3bea1c GS |
4575 | remote_stopped_by_watchpoint (void) |
4576 | { | |
4577 | return remote_stopped_by_watchpoint_p; | |
4578 | } | |
4579 | ||
7270d8f2 OF |
4580 | extern int stepped_after_stopped_by_watchpoint; |
4581 | ||
4aa7a7f5 JJ |
4582 | static int |
4583 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4584 | { |
4aa7a7f5 | 4585 | int rc = 0; |
7270d8f2 OF |
4586 | if (remote_stopped_by_watchpoint () |
4587 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4588 | { |
4589 | *addr_p = remote_watch_data_address; | |
4590 | rc = 1; | |
4591 | } | |
4592 | ||
4593 | return rc; | |
3c3bea1c GS |
4594 | } |
4595 | ||
4596 | ||
4597 | static int | |
c6826062 | 4598 | remote_insert_hw_breakpoint (CORE_ADDR addr, gdb_byte *shadow) |
3c3bea1c GS |
4599 | { |
4600 | int len = 0; | |
d01949b6 | 4601 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4602 | char *p = rs->buf; |
802188a7 | 4603 | |
c8189ed1 GS |
4604 | /* The length field should be set to the size of a breakpoint |
4605 | instruction. */ | |
4606 | ||
802188a7 | 4607 | BREAKPOINT_FROM_PC (&addr, &len); |
3c3bea1c | 4608 | |
444abaca | 4609 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
8a3fe4f8 | 4610 | error (_("Can't set hardware breakpoint without the '%s' (%s) packet."), |
444abaca DJ |
4611 | remote_protocol_packets[PACKET_Z1].name, |
4612 | remote_protocol_packets[PACKET_Z1].title); | |
802188a7 | 4613 | |
96baa820 JM |
4614 | *(p++) = 'Z'; |
4615 | *(p++) = '1'; | |
4616 | *(p++) = ','; | |
802188a7 | 4617 | |
96baa820 JM |
4618 | addr = remote_address_masked (addr); |
4619 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4620 | sprintf (p, ",%x", len); |
96baa820 | 4621 | |
6d820c5c DJ |
4622 | putpkt (rs->buf); |
4623 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4624 | |
6d820c5c | 4625 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4626 | { |
4627 | case PACKET_ERROR: | |
4628 | case PACKET_UNKNOWN: | |
4629 | return -1; | |
4630 | case PACKET_OK: | |
4631 | return 0; | |
4632 | } | |
8e65ff28 | 4633 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4634 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
4635 | } |
4636 | ||
d471ea57 | 4637 | |
802188a7 | 4638 | static int |
c6826062 | 4639 | remote_remove_hw_breakpoint (CORE_ADDR addr, gdb_byte *shadow) |
96baa820 | 4640 | { |
3c3bea1c | 4641 | int len; |
d01949b6 | 4642 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4643 | char *p = rs->buf; |
c8189ed1 GS |
4644 | |
4645 | /* The length field should be set to the size of a breakpoint | |
4646 | instruction. */ | |
4647 | ||
4648 | BREAKPOINT_FROM_PC (&addr, &len); | |
4649 | ||
444abaca | 4650 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
8a3fe4f8 | 4651 | error (_("Can't clear hardware breakpoint without the '%s' (%s) packet."), |
444abaca DJ |
4652 | remote_protocol_packets[PACKET_Z1].name, |
4653 | remote_protocol_packets[PACKET_Z1].title); | |
802188a7 | 4654 | |
96baa820 JM |
4655 | *(p++) = 'z'; |
4656 | *(p++) = '1'; | |
4657 | *(p++) = ','; | |
802188a7 | 4658 | |
96baa820 JM |
4659 | addr = remote_address_masked (addr); |
4660 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4661 | sprintf (p, ",%x", len); |
96baa820 | 4662 | |
6d820c5c DJ |
4663 | putpkt (rs->buf); |
4664 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 4665 | |
6d820c5c | 4666 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4667 | { |
4668 | case PACKET_ERROR: | |
4669 | case PACKET_UNKNOWN: | |
4670 | return -1; | |
4671 | case PACKET_OK: | |
4672 | return 0; | |
4673 | } | |
8e65ff28 | 4674 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4675 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 4676 | } |
96baa820 | 4677 | |
c906108c SS |
4678 | /* Some targets are only capable of doing downloads, and afterwards |
4679 | they switch to the remote serial protocol. This function provides | |
4680 | a clean way to get from the download target to the remote target. | |
4681 | It's basically just a wrapper so that we don't have to expose any | |
4682 | of the internal workings of remote.c. | |
4683 | ||
4684 | Prior to calling this routine, you should shutdown the current | |
4685 | target code, else you will get the "A program is being debugged | |
4686 | already..." message. Usually a call to pop_target() suffices. */ | |
4687 | ||
4688 | void | |
fba45db2 | 4689 | push_remote_target (char *name, int from_tty) |
c906108c | 4690 | { |
a3f17187 | 4691 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
4692 | remote_open (name, from_tty); |
4693 | } | |
4694 | ||
23860348 | 4695 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 4696 | |
c5aa993b JM |
4697 | static unsigned long crc32_table[256] = |
4698 | {0, 0}; | |
c906108c SS |
4699 | |
4700 | static unsigned long | |
fba45db2 | 4701 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4702 | { |
c5aa993b | 4703 | if (!crc32_table[1]) |
c906108c | 4704 | { |
23860348 | 4705 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
4706 | int i, j; |
4707 | unsigned int c; | |
4708 | ||
4709 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4710 | { |
4711 | for (c = i << 24, j = 8; j > 0; --j) | |
4712 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4713 | crc32_table[i] = c; | |
4714 | } | |
c906108c SS |
4715 | } |
4716 | ||
4717 | while (len--) | |
4718 | { | |
4719 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4720 | buf++; | |
4721 | } | |
4722 | return crc; | |
4723 | } | |
4724 | ||
4725 | /* compare-sections command | |
4726 | ||
4727 | With no arguments, compares each loadable section in the exec bfd | |
4728 | with the same memory range on the target, and reports mismatches. | |
4729 | Useful for verifying the image on the target against the exec file. | |
4730 | Depends on the target understanding the new "qCRC:" request. */ | |
4731 | ||
e514a9d6 JM |
4732 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4733 | target method (target verify memory) and generic version of the | |
4734 | actual command. This will allow other high-level code (especially | |
23860348 | 4735 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 4736 | |
c906108c | 4737 | static void |
fba45db2 | 4738 | compare_sections_command (char *args, int from_tty) |
c906108c | 4739 | { |
d01949b6 | 4740 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4741 | asection *s; |
4742 | unsigned long host_crc, target_crc; | |
4743 | extern bfd *exec_bfd; | |
4744 | struct cleanup *old_chain; | |
085dd6e6 JM |
4745 | char *tmp; |
4746 | char *sectdata; | |
ce359b09 | 4747 | const char *sectname; |
c906108c SS |
4748 | bfd_size_type size; |
4749 | bfd_vma lma; | |
4750 | int matched = 0; | |
4751 | int mismatched = 0; | |
4752 | ||
4753 | if (!exec_bfd) | |
8a3fe4f8 | 4754 | error (_("command cannot be used without an exec file")); |
c906108c SS |
4755 | if (!current_target.to_shortname || |
4756 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 4757 | error (_("command can only be used with remote target")); |
c906108c | 4758 | |
c5aa993b | 4759 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4760 | { |
4761 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4762 | continue; /* skip non-loadable section */ |
c906108c | 4763 | |
2c500098 | 4764 | size = bfd_get_section_size (s); |
c906108c | 4765 | if (size == 0) |
c5aa993b | 4766 | continue; /* skip zero-length section */ |
c906108c | 4767 | |
ce359b09 | 4768 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4769 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4770 | continue; /* not the section selected by user */ |
c906108c | 4771 | |
c5aa993b | 4772 | matched = 1; /* do this section */ |
c906108c | 4773 | lma = s->lma; |
23860348 | 4774 | /* FIXME: assumes lma can fit into long. */ |
6d820c5c | 4775 | xsnprintf (rs->buf, rs->remote_packet_size, "qCRC:%lx,%lx", |
ecbc58df | 4776 | (long) lma, (long) size); |
6d820c5c | 4777 | putpkt (rs->buf); |
c906108c | 4778 | |
23860348 MS |
4779 | /* Be clever; compute the host_crc before waiting for target |
4780 | reply. */ | |
c906108c | 4781 | sectdata = xmalloc (size); |
b8c9b27d | 4782 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4783 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4784 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4785 | ||
6d820c5c DJ |
4786 | getpkt (&rs->buf, &rs->buf_size, 0); |
4787 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 4788 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 4789 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 4790 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 4791 | error (_("remote target does not support this operation")); |
c906108c | 4792 | |
6d820c5c | 4793 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
4794 | target_crc = target_crc * 16 + fromhex (*tmp); |
4795 | ||
d4f3574e SS |
4796 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4797 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4798 | if (host_crc == target_crc) |
4799 | printf_filtered ("matched.\n"); | |
4800 | else | |
c5aa993b JM |
4801 | { |
4802 | printf_filtered ("MIS-MATCHED!\n"); | |
4803 | mismatched++; | |
4804 | } | |
c906108c SS |
4805 | |
4806 | do_cleanups (old_chain); | |
4807 | } | |
4808 | if (mismatched > 0) | |
8a3fe4f8 AC |
4809 | warning (_("One or more sections of the remote executable does not match\n\ |
4810 | the loaded file\n")); | |
c906108c | 4811 | if (args && !matched) |
a3f17187 | 4812 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
4813 | } |
4814 | ||
1e3ff5ad | 4815 | static LONGEST |
4b8a223f | 4816 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
4817 | const char *annex, gdb_byte *readbuf, |
4818 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 4819 | { |
d01949b6 | 4820 | struct remote_state *rs = get_remote_state (); |
c906108c | 4821 | int i; |
6d820c5c | 4822 | char *p2; |
1e3ff5ad | 4823 | char query_type; |
c906108c | 4824 | |
21e3b9b9 DJ |
4825 | /* Handle memory using remote_xfer_memory. */ |
4826 | if (object == TARGET_OBJECT_MEMORY) | |
4827 | { | |
4828 | int xfered; | |
4829 | errno = 0; | |
4830 | ||
4831 | if (writebuf != NULL) | |
4832 | { | |
4833 | void *buffer = xmalloc (len); | |
4834 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4835 | memcpy (buffer, writebuf, len); | |
4836 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4837 | do_cleanups (cleanup); | |
4838 | } | |
4839 | else | |
4840 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4841 | ||
4842 | if (xfered > 0) | |
4843 | return xfered; | |
4844 | else if (xfered == 0 && errno == 0) | |
4845 | return 0; | |
4846 | else | |
4847 | return -1; | |
4848 | } | |
4849 | ||
4b8a223f AC |
4850 | /* Only handle reads. */ |
4851 | if (writebuf != NULL || readbuf == NULL) | |
4852 | return -1; | |
4853 | ||
1e3ff5ad AC |
4854 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4855 | objects!!! Instead specify new query packets. */ | |
4856 | switch (object) | |
c906108c | 4857 | { |
1e3ff5ad AC |
4858 | case TARGET_OBJECT_KOD: |
4859 | query_type = 'K'; | |
4860 | break; | |
4861 | case TARGET_OBJECT_AVR: | |
4862 | query_type = 'R'; | |
4863 | break; | |
802188a7 RM |
4864 | |
4865 | case TARGET_OBJECT_AUXV: | |
444abaca | 4866 | if (remote_protocol_packets[PACKET_qPart_auxv].support != PACKET_DISABLE) |
802188a7 RM |
4867 | { |
4868 | unsigned int total = 0; | |
4869 | while (len > 0) | |
4870 | { | |
4871 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
6d820c5c | 4872 | snprintf (rs->buf, rs->remote_packet_size, |
802188a7 RM |
4873 | "qPart:auxv:read::%s,%s", |
4874 | phex_nz (offset, sizeof offset), | |
4875 | phex_nz (n, sizeof n)); | |
6d820c5c | 4876 | i = putpkt (rs->buf); |
802188a7 RM |
4877 | if (i < 0) |
4878 | return total > 0 ? total : i; | |
6d820c5c DJ |
4879 | rs->buf[0] = '\0'; |
4880 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4881 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qPart_auxv]) | |
444abaca | 4882 | != PACKET_OK) |
802188a7 | 4883 | return total > 0 ? total : -1; |
6d820c5c | 4884 | if (strcmp (rs->buf, "OK") == 0) |
802188a7 RM |
4885 | break; /* Got EOF indicator. */ |
4886 | /* Got some data. */ | |
6d820c5c | 4887 | i = hex2bin (rs->buf, readbuf, len); |
802188a7 RM |
4888 | if (i > 0) |
4889 | { | |
4890 | readbuf = (void *) ((char *) readbuf + i); | |
4891 | offset += i; | |
4892 | len -= i; | |
4893 | total += i; | |
4894 | } | |
4895 | } | |
4896 | return total; | |
4897 | } | |
4898 | return -1; | |
4899 | ||
1e3ff5ad | 4900 | default: |
c906108c SS |
4901 | return -1; |
4902 | } | |
4903 | ||
4b8a223f | 4904 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 4905 | buffer size. */ |
4b8a223f | 4906 | if (offset == 0 && len == 0) |
1e3ff5ad | 4907 | return (rs->remote_packet_size); |
24b06219 MK |
4908 | /* Minimum outbuf size is RS->remote_packet_size. If LEN is not |
4909 | large enough let the caller deal with it. */ | |
4910 | if (len < rs->remote_packet_size) | |
1e3ff5ad AC |
4911 | return -1; |
4912 | len = rs->remote_packet_size; | |
4913 | ||
23860348 | 4914 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 4915 | if (!remote_desc) |
8a3fe4f8 | 4916 | error (_("remote query is only available after target open")); |
c906108c | 4917 | |
1e3ff5ad | 4918 | gdb_assert (annex != NULL); |
4b8a223f | 4919 | gdb_assert (readbuf != NULL); |
c906108c | 4920 | |
6d820c5c | 4921 | p2 = rs->buf; |
c906108c SS |
4922 | *p2++ = 'q'; |
4923 | *p2++ = query_type; | |
4924 | ||
23860348 MS |
4925 | /* We used one buffer char for the remote protocol q command and |
4926 | another for the query type. As the remote protocol encapsulation | |
4927 | uses 4 chars plus one extra in case we are debugging | |
4928 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
4929 | string. */ | |
c906108c | 4930 | i = 0; |
24b06219 | 4931 | while (annex[i] && (i < (rs->remote_packet_size - 8))) |
c906108c | 4932 | { |
1e3ff5ad AC |
4933 | /* Bad caller may have sent forbidden characters. */ |
4934 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
4935 | *p2++ = annex[i]; | |
c906108c SS |
4936 | i++; |
4937 | } | |
1e3ff5ad AC |
4938 | *p2 = '\0'; |
4939 | gdb_assert (annex[i] == '\0'); | |
c906108c | 4940 | |
6d820c5c | 4941 | i = putpkt (rs->buf); |
c5aa993b JM |
4942 | if (i < 0) |
4943 | return i; | |
c906108c | 4944 | |
6d820c5c DJ |
4945 | getpkt (&rs->buf, &rs->buf_size, 0); |
4946 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 4947 | |
cfd77fa1 | 4948 | return strlen ((char *) readbuf); |
c906108c SS |
4949 | } |
4950 | ||
96baa820 JM |
4951 | static void |
4952 | remote_rcmd (char *command, | |
d9fcf2fb | 4953 | struct ui_file *outbuf) |
96baa820 | 4954 | { |
d01949b6 | 4955 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4956 | char *buf = rs->buf; |
96baa820 JM |
4957 | char *p = buf; |
4958 | ||
4959 | if (!remote_desc) | |
8a3fe4f8 | 4960 | error (_("remote rcmd is only available after target open")); |
96baa820 | 4961 | |
23860348 | 4962 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
4963 | if (command == NULL) |
4964 | command = ""; | |
4965 | ||
23860348 | 4966 | /* The query prefix. */ |
96baa820 JM |
4967 | strcpy (buf, "qRcmd,"); |
4968 | p = strchr (buf, '\0'); | |
4969 | ||
24b06219 | 4970 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > rs->remote_packet_size) |
8a3fe4f8 | 4971 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 4972 | |
23860348 | 4973 | /* Encode the actual command. */ |
cfd77fa1 | 4974 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 4975 | |
6d820c5c | 4976 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 4977 | error (_("Communication problem with target.")); |
96baa820 JM |
4978 | |
4979 | /* get/display the response */ | |
4980 | while (1) | |
4981 | { | |
23860348 | 4982 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
96baa820 | 4983 | buf[0] = '\0'; |
6d820c5c | 4984 | getpkt (&rs->buf, &rs->buf_size, 0); |
96baa820 | 4985 | if (buf[0] == '\0') |
8a3fe4f8 | 4986 | error (_("Target does not support this command.")); |
96baa820 JM |
4987 | if (buf[0] == 'O' && buf[1] != 'K') |
4988 | { | |
23860348 | 4989 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
4990 | continue; |
4991 | } | |
4992 | if (strcmp (buf, "OK") == 0) | |
4993 | break; | |
7be570e7 JM |
4994 | if (strlen (buf) == 3 && buf[0] == 'E' |
4995 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4996 | { | |
8a3fe4f8 | 4997 | error (_("Protocol error with Rcmd")); |
7be570e7 | 4998 | } |
96baa820 JM |
4999 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5000 | { | |
5001 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5002 | fputc_unfiltered (c, outbuf); | |
5003 | } | |
5004 | break; | |
5005 | } | |
5006 | } | |
5007 | ||
c906108c | 5008 | static void |
fba45db2 | 5009 | packet_command (char *args, int from_tty) |
c906108c | 5010 | { |
d01949b6 | 5011 | struct remote_state *rs = get_remote_state (); |
c906108c | 5012 | |
c5aa993b | 5013 | if (!remote_desc) |
8a3fe4f8 | 5014 | error (_("command can only be used with remote target")); |
c906108c | 5015 | |
c5aa993b | 5016 | if (!args) |
8a3fe4f8 | 5017 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5018 | |
5019 | puts_filtered ("sending: "); | |
5020 | print_packet (args); | |
5021 | puts_filtered ("\n"); | |
5022 | putpkt (args); | |
5023 | ||
6d820c5c | 5024 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5025 | puts_filtered ("received: "); |
6d820c5c | 5026 | print_packet (rs->buf); |
c906108c SS |
5027 | puts_filtered ("\n"); |
5028 | } | |
5029 | ||
5030 | #if 0 | |
23860348 | 5031 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5032 | |
a14ed312 | 5033 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5034 | |
a14ed312 | 5035 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5036 | |
a14ed312 | 5037 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5038 | |
a14ed312 | 5039 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5040 | |
23860348 | 5041 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5042 | |
a14ed312 | 5043 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5044 | |
23860348 | 5045 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5046 | |
a14ed312 | 5047 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5048 | |
a14ed312 | 5049 | static void init_remote_threadtests (void); |
c906108c | 5050 | |
23860348 | 5051 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5052 | |
5053 | static void | |
fba45db2 | 5054 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5055 | { |
5056 | int sample_thread = SAMPLE_THREAD; | |
5057 | ||
a3f17187 | 5058 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5059 | set_thread (sample_thread, 1); |
5060 | } | |
5061 | ||
5062 | ||
5063 | static void | |
fba45db2 | 5064 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5065 | { |
5066 | int sample_thread = SAMPLE_THREAD; | |
5067 | ||
39f77062 | 5068 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5069 | printf_filtered ("PASS: Thread alive test\n"); |
5070 | else | |
5071 | printf_filtered ("FAIL: Thread alive test\n"); | |
5072 | } | |
5073 | ||
23860348 | 5074 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5075 | |
5076 | void | |
fba45db2 | 5077 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5078 | { |
5079 | char hexid[20]; | |
5080 | ||
23860348 | 5081 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5082 | hexid[16] = 0; |
5083 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5084 | } | |
5085 | ||
5086 | static void | |
fba45db2 | 5087 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5088 | { |
5089 | int startflag = 1; | |
5090 | threadref nextthread; | |
5091 | int done, result_count; | |
5092 | threadref threadlist[3]; | |
5093 | ||
5094 | printf_filtered ("Remote Threadlist test\n"); | |
5095 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5096 | &result_count, &threadlist[0])) | |
5097 | printf_filtered ("FAIL: threadlist test\n"); | |
5098 | else | |
5099 | { | |
5100 | threadref *scan = threadlist; | |
5101 | threadref *limit = scan + result_count; | |
5102 | ||
5103 | while (scan < limit) | |
5104 | output_threadid (" thread ", scan++); | |
5105 | } | |
5106 | } | |
5107 | ||
5108 | void | |
fba45db2 | 5109 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5110 | { |
5111 | output_threadid ("Threadid: ", &info->threadid); | |
5112 | printf_filtered ("Name: %s\n ", info->shortname); | |
5113 | printf_filtered ("State: %s\n", info->display); | |
5114 | printf_filtered ("other: %s\n\n", info->more_display); | |
5115 | } | |
5116 | ||
5117 | int | |
fba45db2 | 5118 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5119 | { |
5120 | int result; | |
5121 | int set; | |
5122 | struct gdb_ext_thread_info threadinfo; | |
5123 | ||
5124 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5125 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5126 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5127 | display_thread_info (&threadinfo); | |
5128 | return result; | |
5129 | } | |
5130 | ||
5131 | static void | |
fba45db2 | 5132 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5133 | { |
5134 | int athread = SAMPLE_THREAD; | |
5135 | threadref thread; | |
5136 | int set; | |
5137 | ||
5138 | int_to_threadref (&thread, athread); | |
5139 | printf_filtered ("Remote Threadinfo test\n"); | |
5140 | if (!get_and_display_threadinfo (&thread)) | |
5141 | printf_filtered ("FAIL cannot get thread info\n"); | |
5142 | } | |
5143 | ||
5144 | static int | |
fba45db2 | 5145 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5146 | { |
5147 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5148 | return get_and_display_threadinfo (ref); | |
5149 | } | |
5150 | ||
5151 | static void | |
fba45db2 | 5152 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5153 | { |
5154 | printf_filtered ("Remote Threadlist update test\n"); | |
5155 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5156 | } | |
5157 | ||
5158 | static void | |
5159 | init_remote_threadtests (void) | |
5160 | { | |
1bedd215 AC |
5161 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5162 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5163 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5164 | _("Fetch and display info about one thread")); |
c906108c | 5165 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5166 | _("Test setting to a different thread")); |
c906108c | 5167 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5168 | _("Iterate through updating all remote thread info")); |
c906108c | 5169 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5170 | _(" Remote thread alive test ")); |
c906108c SS |
5171 | } |
5172 | ||
5173 | #endif /* 0 */ | |
5174 | ||
f3fb8c85 MS |
5175 | /* Convert a thread ID to a string. Returns the string in a static |
5176 | buffer. */ | |
5177 | ||
5178 | static char * | |
39f77062 | 5179 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 5180 | { |
fd0a2a6f | 5181 | static char buf[32]; |
f3fb8c85 | 5182 | |
6c76e4a1 | 5183 | xsnprintf (buf, sizeof buf, "thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
5184 | return buf; |
5185 | } | |
5186 | ||
38691318 KB |
5187 | /* Get the address of the thread local variable in OBJFILE which is |
5188 | stored at OFFSET within the thread local storage for thread PTID. */ | |
5189 | ||
5190 | static CORE_ADDR | |
5191 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
5192 | { | |
444abaca | 5193 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
5194 | { |
5195 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 5196 | char *p = rs->buf; |
571dd617 | 5197 | enum packet_result result; |
38691318 KB |
5198 | |
5199 | strcpy (p, "qGetTLSAddr:"); | |
5200 | p += strlen (p); | |
5201 | p += hexnumstr (p, PIDGET (ptid)); | |
5202 | *p++ = ','; | |
5203 | p += hexnumstr (p, offset); | |
5204 | *p++ = ','; | |
5205 | p += hexnumstr (p, lm); | |
5206 | *p++ = '\0'; | |
5207 | ||
6d820c5c DJ |
5208 | putpkt (rs->buf); |
5209 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5210 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 5211 | if (result == PACKET_OK) |
38691318 KB |
5212 | { |
5213 | ULONGEST result; | |
5214 | ||
6d820c5c | 5215 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
5216 | return result; |
5217 | } | |
571dd617 | 5218 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
5219 | throw_error (TLS_GENERIC_ERROR, |
5220 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 5221 | else |
109c3e39 AC |
5222 | throw_error (TLS_GENERIC_ERROR, |
5223 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
5224 | } |
5225 | else | |
109c3e39 AC |
5226 | throw_error (TLS_GENERIC_ERROR, |
5227 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
5228 | /* Not reached. */ |
5229 | return 0; | |
5230 | } | |
5231 | ||
c906108c | 5232 | static void |
fba45db2 | 5233 | init_remote_ops (void) |
c906108c | 5234 | { |
c5aa993b | 5235 | remote_ops.to_shortname = "remote"; |
c906108c | 5236 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5237 | remote_ops.to_doc = |
c906108c | 5238 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5239 | Specify the serial device it is connected to\n\ |
5240 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5241 | remote_ops.to_open = remote_open; |
5242 | remote_ops.to_close = remote_close; | |
c906108c | 5243 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5244 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5245 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5246 | remote_ops.to_wait = remote_wait; |
5247 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5248 | remote_ops.to_store_registers = remote_store_registers; | |
5249 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5250 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5251 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5252 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5253 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5254 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5255 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5256 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5257 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5258 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5259 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5260 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5261 | remote_ops.to_kill = remote_kill; |
5262 | remote_ops.to_load = generic_load; | |
c906108c SS |
5263 | remote_ops.to_mourn_inferior = remote_mourn; |
5264 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5265 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5266 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5267 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5268 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5269 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5270 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 5271 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 5272 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5273 | remote_ops.to_has_all_memory = 1; |
5274 | remote_ops.to_has_memory = 1; | |
5275 | remote_ops.to_has_stack = 1; | |
5276 | remote_ops.to_has_registers = 1; | |
5277 | remote_ops.to_has_execution = 1; | |
5278 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5279 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5280 | } |
5281 | ||
5282 | /* Set up the extended remote vector by making a copy of the standard | |
5283 | remote vector and adding to it. */ | |
5284 | ||
5285 | static void | |
fba45db2 | 5286 | init_extended_remote_ops (void) |
c906108c SS |
5287 | { |
5288 | extended_remote_ops = remote_ops; | |
5289 | ||
0f71a2f6 | 5290 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5291 | extended_remote_ops.to_longname = |
c906108c | 5292 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5293 | extended_remote_ops.to_doc = |
c906108c SS |
5294 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5295 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5296 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5297 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5298 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5299 | } |
5300 | ||
6426a772 JM |
5301 | static int |
5302 | remote_can_async_p (void) | |
5303 | { | |
23860348 | 5304 | /* We're async whenever the serial device is. */ |
2cd58942 | 5305 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5306 | } |
5307 | ||
5308 | static int | |
5309 | remote_is_async_p (void) | |
5310 | { | |
23860348 | 5311 | /* We're async whenever the serial device is. */ |
2cd58942 | 5312 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5313 | } |
5314 | ||
2acceee2 JM |
5315 | /* Pass the SERIAL event on and up to the client. One day this code |
5316 | will be able to delay notifying the client of an event until the | |
23860348 | 5317 | point where an entire packet has been received. */ |
2acceee2 | 5318 | |
23860348 MS |
5319 | static void (*async_client_callback) (enum inferior_event_type event_type, |
5320 | void *context); | |
2acceee2 JM |
5321 | static void *async_client_context; |
5322 | static serial_event_ftype remote_async_serial_handler; | |
5323 | ||
6426a772 | 5324 | static void |
819cc324 | 5325 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5326 | { |
2acceee2 JM |
5327 | /* Don't propogate error information up to the client. Instead let |
5328 | the client find out about the error by querying the target. */ | |
5329 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5330 | } | |
5331 | ||
5332 | static void | |
23860348 MS |
5333 | remote_async (void (*callback) (enum inferior_event_type event_type, |
5334 | void *context), void *context) | |
2acceee2 | 5335 | { |
ed9a39eb | 5336 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5337 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5338 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5339 | |
2acceee2 JM |
5340 | if (callback != NULL) |
5341 | { | |
2cd58942 | 5342 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5343 | async_client_callback = callback; |
5344 | async_client_context = context; | |
5345 | } | |
5346 | else | |
2cd58942 | 5347 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5348 | } |
5349 | ||
43ff13b4 JM |
5350 | /* Target async and target extended-async. |
5351 | ||
5352 | This are temporary targets, until it is all tested. Eventually | |
5353 | async support will be incorporated int the usual 'remote' | |
23860348 | 5354 | target. */ |
43ff13b4 JM |
5355 | |
5356 | static void | |
c2d11a7d | 5357 | init_remote_async_ops (void) |
43ff13b4 JM |
5358 | { |
5359 | remote_async_ops.to_shortname = "async"; | |
23860348 MS |
5360 | remote_async_ops.to_longname = |
5361 | "Remote serial target in async version of the gdb-specific protocol"; | |
c5aa993b | 5362 | remote_async_ops.to_doc = |
43ff13b4 JM |
5363 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5364 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5365 | remote_async_ops.to_open = remote_async_open; |
5366 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5367 | remote_async_ops.to_detach = remote_detach; |
5368 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5369 | remote_async_ops.to_resume = remote_async_resume; |
5370 | remote_async_ops.to_wait = remote_async_wait; | |
5371 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5372 | remote_async_ops.to_store_registers = remote_store_registers; | |
5373 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5374 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5375 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5376 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5377 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5378 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5379 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5380 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5381 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5382 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5383 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5384 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5385 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5386 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5387 | remote_async_ops.to_kill = remote_async_kill; |
5388 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5389 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5390 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5391 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5392 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5393 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5394 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5395 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5396 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5397 | remote_async_ops.to_stratum = process_stratum; |
5398 | remote_async_ops.to_has_all_memory = 1; | |
5399 | remote_async_ops.to_has_memory = 1; | |
5400 | remote_async_ops.to_has_stack = 1; | |
5401 | remote_async_ops.to_has_registers = 1; | |
5402 | remote_async_ops.to_has_execution = 1; | |
5403 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5404 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5405 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5406 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5407 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5408 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5409 | } |
5410 | ||
5411 | /* Set up the async extended remote vector by making a copy of the standard | |
5412 | remote vector and adding to it. */ | |
5413 | ||
5414 | static void | |
c2d11a7d | 5415 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5416 | { |
5417 | extended_async_remote_ops = remote_async_ops; | |
5418 | ||
5419 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5420 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5421 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5422 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5423 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5424 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5425 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5426 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5427 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5428 | } | |
5429 | ||
37a105a1 DJ |
5430 | static struct cmd_list_element *remote_set_cmdlist; |
5431 | static struct cmd_list_element *remote_show_cmdlist; | |
5432 | ||
5a2468f5 | 5433 | static void |
c2d11a7d | 5434 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5435 | { |
5a2468f5 JM |
5436 | } |
5437 | ||
d471ea57 AC |
5438 | static void |
5439 | show_remote_cmd (char *args, int from_tty) | |
5440 | { | |
37a105a1 DJ |
5441 | /* We can't just use cmd_show_list here, because we want to skip |
5442 | the redundant "show remote Z-packet". */ | |
5443 | struct cleanup *showlist_chain; | |
5444 | struct cmd_list_element *list = remote_show_cmdlist; | |
5445 | ||
5446 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
5447 | for (; list != NULL; list = list->next) | |
5448 | if (strcmp (list->name, "Z-packet") == 0) | |
5449 | continue; | |
5450 | else if (list->type == show_cmd) | |
5451 | { | |
5452 | struct cleanup *option_chain | |
5453 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
5454 | ui_out_field_string (uiout, "name", list->name); | |
5455 | ui_out_text (uiout, ": "); | |
5456 | do_setshow_command ((char *) NULL, from_tty, list); | |
5457 | /* Close the tuple. */ | |
5458 | do_cleanups (option_chain); | |
5459 | } | |
d471ea57 | 5460 | } |
5a2468f5 | 5461 | |
0f71a2f6 | 5462 | static void |
fba45db2 | 5463 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5464 | { |
d696208f | 5465 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5466 | } |
5467 | ||
23860348 | 5468 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
5469 | static void (*remote_new_objfile_chain) (struct objfile *); |
5470 | ||
23860348 | 5471 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
5472 | static void |
5473 | remote_new_objfile (struct objfile *objfile) | |
5474 | { | |
23860348 | 5475 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
5476 | { |
5477 | remote_check_symbols (objfile); | |
5478 | } | |
23860348 | 5479 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
5480 | if (remote_new_objfile_chain != 0 && |
5481 | remote_desc == 0) | |
5482 | remote_new_objfile_chain (objfile); | |
5483 | } | |
5484 | ||
c906108c | 5485 | void |
fba45db2 | 5486 | _initialize_remote (void) |
c906108c | 5487 | { |
0f71a2f6 | 5488 | /* architecture specific data */ |
23860348 MS |
5489 | remote_gdbarch_data_handle = |
5490 | gdbarch_data_register_post_init (init_remote_state); | |
d01949b6 AC |
5491 | |
5492 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5493 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5494 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5495 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5496 | |
c906108c SS |
5497 | init_remote_ops (); |
5498 | add_target (&remote_ops); | |
5499 | ||
5500 | init_extended_remote_ops (); | |
5501 | add_target (&extended_remote_ops); | |
cce74817 | 5502 | |
43ff13b4 JM |
5503 | init_remote_async_ops (); |
5504 | add_target (&remote_async_ops); | |
5505 | ||
5506 | init_extended_async_remote_ops (); | |
5507 | add_target (&extended_async_remote_ops); | |
5508 | ||
dc8acb97 | 5509 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5510 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5511 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5512 | |
c906108c SS |
5513 | #if 0 |
5514 | init_remote_threadtests (); | |
5515 | #endif | |
5516 | ||
23860348 | 5517 | /* set/show remote ... */ |
d471ea57 | 5518 | |
1bedd215 | 5519 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
5520 | Remote protocol specific variables\n\ |
5521 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5522 | the packets being used"), |
cff3e48b | 5523 | &remote_set_cmdlist, "set remote ", |
23860348 | 5524 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 5525 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
5526 | Remote protocol specific variables\n\ |
5527 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5528 | the packets being used"), |
cff3e48b | 5529 | &remote_show_cmdlist, "show remote ", |
23860348 | 5530 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 5531 | |
1a966eab AC |
5532 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
5533 | Compare section data on target to the exec file.\n\ | |
5534 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
5535 | &cmdlist); |
5536 | ||
1a966eab AC |
5537 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
5538 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
5539 | maintenance packet TEXT\n\ |
5540 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5541 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5542 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 5543 | terminating `#' character and checksum."), |
c906108c SS |
5544 | &maintenancelist); |
5545 | ||
7915a72c AC |
5546 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
5547 | Set whether to send break if interrupted."), _("\ | |
5548 | Show whether to send break if interrupted."), _("\ | |
5549 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 5550 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 5551 | &setlist, &showlist); |
c906108c | 5552 | |
23860348 | 5553 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 5554 | |
1a966eab AC |
5555 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
5556 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 5557 | &setlist); |
1a966eab AC |
5558 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
5559 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
5560 | &showlist); |
5561 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
5562 | set_memory_write_packet_size, _("\ |
5563 | Set the maximum number of bytes per memory-write packet.\n\ | |
5564 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5565 | default packet size. The actual limit is further reduced\n\ | |
5566 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5567 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5568 | &remote_set_cmdlist); |
5569 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
5570 | set_memory_read_packet_size, _("\ |
5571 | Set the maximum number of bytes per memory-read packet.\n\ | |
5572 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5573 | default packet size. The actual limit is further reduced\n\ | |
5574 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5575 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5576 | &remote_set_cmdlist); |
5577 | add_cmd ("memory-write-packet-size", no_class, | |
5578 | show_memory_write_packet_size, | |
1a966eab | 5579 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
5580 | &remote_show_cmdlist); |
5581 | add_cmd ("memory-read-packet-size", no_class, | |
5582 | show_memory_read_packet_size, | |
1a966eab | 5583 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 5584 | &remote_show_cmdlist); |
c906108c | 5585 | |
b3f42336 | 5586 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
5587 | &remote_hw_watchpoint_limit, _("\ |
5588 | Set the maximum number of target hardware watchpoints."), _("\ | |
5589 | Show the maximum number of target hardware watchpoints."), _("\ | |
5590 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5591 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
5592 | &remote_set_cmdlist, &remote_show_cmdlist); |
5593 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
5594 | &remote_hw_breakpoint_limit, _("\ |
5595 | Set the maximum number of target hardware breakpoints."), _("\ | |
5596 | Show the maximum number of target hardware breakpoints."), _("\ | |
5597 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5598 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 5599 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 5600 | |
4d28ad1e AC |
5601 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
5602 | &remote_address_size, _("\ | |
5603 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
5604 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
5605 | NULL, | |
5606 | NULL, /* FIXME: i18n: */ | |
5607 | &setlist, &showlist); | |
c906108c | 5608 | |
444abaca | 5609 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
96baa820 | 5610 | "X", "binary-download", |
444abaca DJ |
5611 | set_remote_protocol_packet_cmd, |
5612 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5613 | &remote_set_cmdlist, &remote_show_cmdlist, |
5614 | 1); | |
0f71a2f6 | 5615 | |
444abaca | 5616 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
506fb367 | 5617 | "vCont", "verbose-resume", |
444abaca DJ |
5618 | set_remote_protocol_packet_cmd, |
5619 | show_remote_protocol_packet_cmd, | |
506fb367 DJ |
5620 | &remote_set_cmdlist, &remote_show_cmdlist, |
5621 | 0); | |
5622 | ||
444abaca | 5623 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
dc8acb97 | 5624 | "qSymbol", "symbol-lookup", |
444abaca DJ |
5625 | set_remote_protocol_packet_cmd, |
5626 | show_remote_protocol_packet_cmd, | |
dc8acb97 MS |
5627 | &remote_set_cmdlist, &remote_show_cmdlist, |
5628 | 0); | |
5629 | ||
444abaca | 5630 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
d471ea57 | 5631 | "P", "set-register", |
444abaca DJ |
5632 | set_remote_protocol_packet_cmd, |
5633 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5634 | &remote_set_cmdlist, &remote_show_cmdlist, |
5635 | 1); | |
5636 | ||
444abaca | 5637 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
b96ec7ac | 5638 | "p", "fetch-register", |
444abaca DJ |
5639 | set_remote_protocol_packet_cmd, |
5640 | show_remote_protocol_packet_cmd, | |
b96ec7ac AC |
5641 | &remote_set_cmdlist, &remote_show_cmdlist, |
5642 | 1); | |
5643 | ||
444abaca | 5644 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
d471ea57 | 5645 | "Z0", "software-breakpoint", |
444abaca DJ |
5646 | set_remote_protocol_packet_cmd, |
5647 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5648 | &remote_set_cmdlist, &remote_show_cmdlist, |
5649 | 0); | |
5650 | ||
444abaca | 5651 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
d471ea57 | 5652 | "Z1", "hardware-breakpoint", |
444abaca DJ |
5653 | set_remote_protocol_packet_cmd, |
5654 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5655 | &remote_set_cmdlist, &remote_show_cmdlist, |
5656 | 0); | |
5657 | ||
444abaca | 5658 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
d471ea57 | 5659 | "Z2", "write-watchpoint", |
444abaca DJ |
5660 | set_remote_protocol_packet_cmd, |
5661 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5662 | &remote_set_cmdlist, &remote_show_cmdlist, |
5663 | 0); | |
5664 | ||
444abaca | 5665 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
d471ea57 | 5666 | "Z3", "read-watchpoint", |
444abaca DJ |
5667 | set_remote_protocol_packet_cmd, |
5668 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5669 | &remote_set_cmdlist, &remote_show_cmdlist, |
5670 | 0); | |
5671 | ||
444abaca | 5672 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
d471ea57 | 5673 | "Z4", "access-watchpoint", |
444abaca DJ |
5674 | set_remote_protocol_packet_cmd, |
5675 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5676 | &remote_set_cmdlist, &remote_show_cmdlist, |
5677 | 0); | |
5678 | ||
444abaca | 5679 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qPart_auxv], |
802188a7 | 5680 | "qPart_auxv", "read-aux-vector", |
444abaca DJ |
5681 | set_remote_protocol_packet_cmd, |
5682 | show_remote_protocol_packet_cmd, | |
802188a7 RM |
5683 | &remote_set_cmdlist, &remote_show_cmdlist, |
5684 | 0); | |
5685 | ||
444abaca | 5686 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 5687 | "qGetTLSAddr", "get-thread-local-storage-address", |
444abaca DJ |
5688 | set_remote_protocol_packet_cmd, |
5689 | show_remote_protocol_packet_cmd, | |
38691318 KB |
5690 | &remote_set_cmdlist, &remote_show_cmdlist, |
5691 | 0); | |
5692 | ||
37a105a1 DJ |
5693 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
5694 | Z sub-packet has its own set and show commands, but users may | |
5695 | have sets to this variable in their .gdbinit files (or in their | |
5696 | documentation). */ | |
e9e68a56 | 5697 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
5698 | &remote_Z_packet_detect, _("\ |
5699 | Set use of remote protocol `Z' packets"), _("\ | |
5700 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 5701 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 5702 | packets."), |
e9e68a56 | 5703 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 5704 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 5705 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
5706 | |
5707 | /* Eventually initialize fileio. See fileio.c */ | |
5708 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5709 | } |