Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c AC |
2 | |
3 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, | |
29182b13 DJ |
4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
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 | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c5aa993b | 23 | |
96baa820 | 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" |
c906108c | 44 | |
7a292a7a | 45 | #include <ctype.h> |
9846de1b | 46 | #include <sys/time.h> |
c906108c | 47 | |
43ff13b4 | 48 | #include "event-loop.h" |
c2c6d25f | 49 | #include "event-top.h" |
2acceee2 | 50 | #include "inf-loop.h" |
43ff13b4 | 51 | |
c906108c SS |
52 | #include <signal.h> |
53 | #include "serial.h" | |
54 | ||
6240bebf MS |
55 | #include "gdbcore.h" /* for exec_bfd */ |
56 | ||
449092f6 CV |
57 | #include "remote-fileio.h" |
58 | ||
c906108c | 59 | /* Prototypes for local functions */ |
6426a772 JM |
60 | static void cleanup_sigint_signal_handler (void *dummy); |
61 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 62 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 63 | |
a14ed312 KB |
64 | static void handle_remote_sigint (int); |
65 | static void handle_remote_sigint_twice (int); | |
66 | static void async_remote_interrupt (gdb_client_data); | |
67 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 68 | |
a14ed312 | 69 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 70 | |
a14ed312 | 71 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 72 | |
a14ed312 KB |
73 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
74 | int len, int should_write, | |
29e57380 | 75 | struct mem_attrib *attrib, |
a14ed312 | 76 | struct target_ops *target); |
c906108c | 77 | |
a14ed312 | 78 | static void remote_prepare_to_store (void); |
c906108c | 79 | |
a14ed312 | 80 | static void remote_fetch_registers (int regno); |
c906108c | 81 | |
39f77062 KB |
82 | static void remote_resume (ptid_t ptid, int step, |
83 | enum target_signal siggnal); | |
84 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 85 | enum target_signal siggnal); |
36918e70 | 86 | static int remote_start_remote (struct ui_out *uiout, void *dummy); |
c906108c | 87 | |
a14ed312 KB |
88 | static void remote_open (char *name, int from_tty); |
89 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 90 | |
a14ed312 KB |
91 | static void extended_remote_open (char *name, int from_tty); |
92 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 93 | |
92d1e331 DJ |
94 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
95 | int async_p); | |
c906108c | 96 | |
a14ed312 | 97 | static void remote_close (int quitting); |
c906108c | 98 | |
a14ed312 | 99 | static void remote_store_registers (int regno); |
c906108c | 100 | |
a14ed312 KB |
101 | static void remote_mourn (void); |
102 | static void remote_async_mourn (void); | |
c906108c | 103 | |
a14ed312 | 104 | static void extended_remote_restart (void); |
c906108c | 105 | |
a14ed312 | 106 | static void extended_remote_mourn (void); |
c906108c | 107 | |
a14ed312 | 108 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 109 | |
c2d11a7d | 110 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 111 | |
a14ed312 | 112 | static int readchar (int timeout); |
c906108c | 113 | |
39f77062 KB |
114 | static ptid_t remote_wait (ptid_t ptid, |
115 | struct target_waitstatus *status); | |
116 | static ptid_t remote_async_wait (ptid_t ptid, | |
117 | struct target_waitstatus *status); | |
c906108c | 118 | |
a14ed312 KB |
119 | static void remote_kill (void); |
120 | static void remote_async_kill (void); | |
c906108c | 121 | |
a14ed312 | 122 | static int tohex (int nib); |
c906108c | 123 | |
a14ed312 | 124 | static void remote_detach (char *args, int from_tty); |
c906108c | 125 | |
a14ed312 | 126 | static void remote_interrupt (int signo); |
c906108c | 127 | |
a14ed312 | 128 | static void remote_interrupt_twice (int signo); |
7a292a7a | 129 | |
a14ed312 | 130 | static void interrupt_query (void); |
c906108c | 131 | |
a14ed312 | 132 | static void set_thread (int, int); |
c906108c | 133 | |
39f77062 | 134 | static int remote_thread_alive (ptid_t); |
c906108c | 135 | |
a14ed312 | 136 | static void get_offsets (void); |
c906108c | 137 | |
c2d11a7d | 138 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 139 | |
a14ed312 | 140 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 141 | |
a14ed312 | 142 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 143 | |
a14ed312 | 144 | static int hexnumlen (ULONGEST num); |
c906108c | 145 | |
a14ed312 | 146 | static void init_remote_ops (void); |
c906108c | 147 | |
a14ed312 | 148 | static void init_extended_remote_ops (void); |
c906108c | 149 | |
a14ed312 | 150 | static void remote_stop (void); |
c906108c | 151 | |
a14ed312 | 152 | static int ishex (int ch, int *val); |
c906108c | 153 | |
a14ed312 | 154 | static int stubhex (int ch); |
c906108c | 155 | |
a14ed312 | 156 | static int hexnumstr (char *, ULONGEST); |
c906108c | 157 | |
a14ed312 | 158 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 159 | |
a14ed312 | 160 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 161 | |
a14ed312 | 162 | static void print_packet (char *); |
c906108c | 163 | |
a14ed312 | 164 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 165 | |
a14ed312 | 166 | static void compare_sections_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static void packet_command (char *, int); |
c906108c | 169 | |
a14ed312 | 170 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 171 | |
39f77062 | 172 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 173 | |
a14ed312 | 174 | static void remote_find_new_threads (void); |
c906108c | 175 | |
a14ed312 | 176 | static void record_currthread (int currthread); |
c906108c | 177 | |
30559e10 | 178 | static int fromhex (int a); |
c906108c | 179 | |
dc8acb97 | 180 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 181 | |
dc8acb97 | 182 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 183 | |
a14ed312 | 184 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 185 | |
a14ed312 | 186 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 187 | |
5a2468f5 | 188 | struct packet_config; |
5a2468f5 | 189 | |
a14ed312 | 190 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 191 | |
d471ea57 | 192 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 193 | |
a14ed312 | 194 | void _initialize_remote (void); |
c906108c | 195 | |
694f61fb | 196 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
197 | target is open()ed, remote.c should create a per-target description |
198 | of the remote protocol using that target's architecture. | |
ce2826aa | 199 | Unfortunately, the target stack doesn't include local state. For |
d01949b6 AC |
200 | the moment keep the information in the target's architecture |
201 | object. Sigh.. */ | |
202 | ||
ad10f812 AC |
203 | struct packet_reg |
204 | { | |
205 | long offset; /* Offset into G packet. */ | |
206 | long regnum; /* GDB's internal register number. */ | |
207 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 208 | int in_g_packet; /* Always part of G packet. */ |
3acba339 | 209 | /* long size in bytes; == register_size (current_gdbarch, regnum); 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 | |
227 | trailers). */ | |
228 | long actual_register_packet_size; | |
229 | ||
230 | /* This is the maximum size (in chars) of a non read/write packet. | |
231 | It is also used as a cap on the size of read/write packets. */ | |
232 | long remote_packet_size; | |
233 | }; | |
234 | ||
3c3bea1c | 235 | |
d01949b6 AC |
236 | /* Handle for retreving the remote protocol data from gdbarch. */ |
237 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
238 | ||
239 | static struct remote_state * | |
5ae5f592 | 240 | get_remote_state (void) |
d01949b6 | 241 | { |
451fbdda | 242 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
243 | } |
244 | ||
245 | static void * | |
246 | init_remote_state (struct gdbarch *gdbarch) | |
247 | { | |
248 | int regnum; | |
e5e78edc | 249 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state); |
d01949b6 | 250 | |
f42accbe AC |
251 | if (deprecated_register_bytes () != 0) |
252 | rs->sizeof_g_packet = deprecated_register_bytes (); | |
7d58c67d TR |
253 | else |
254 | rs->sizeof_g_packet = 0; | |
ad10f812 | 255 | |
b323314b | 256 | /* Assume a 1:1 regnum<->pnum table. */ |
e5e78edc AC |
257 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
258 | struct packet_reg); | |
b323314b | 259 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 260 | { |
b323314b AC |
261 | struct packet_reg *r = &rs->regs[regnum]; |
262 | r->pnum = regnum; | |
263 | r->regnum = regnum; | |
62700349 | 264 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 265 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 266 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d TR |
267 | |
268 | /* Compute packet size by accumulating the size of all registers. */ | |
f42accbe | 269 | if (deprecated_register_bytes () == 0) |
7d58c67d | 270 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); |
ad10f812 AC |
271 | } |
272 | ||
d01949b6 AC |
273 | /* Default maximum number of characters in a packet body. Many |
274 | remote stubs have a hardwired buffer size of 400 bytes | |
275 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
276 | as the maximum packet-size to ensure that the packet and an extra | |
277 | NUL character can always fit in the buffer. This stops GDB | |
278 | trashing stubs that try to squeeze an extra NUL into what is | |
279 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
280 | rs->remote_packet_size = 400 - 1; | |
281 | ||
ad10f812 AC |
282 | /* Should rs->sizeof_g_packet needs more space than the |
283 | default, adjust the size accordingly. Remember that each byte is | |
284 | encoded as two characters. 32 is the overhead for the packet | |
285 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 AC |
286 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
287 | little. */ | |
ad10f812 AC |
288 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
289 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
802188a7 | 290 | |
d01949b6 AC |
291 | /* This one is filled in when a ``g'' packet is received. */ |
292 | rs->actual_register_packet_size = 0; | |
293 | ||
294 | return rs; | |
295 | } | |
296 | ||
ad10f812 AC |
297 | static struct packet_reg * |
298 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
299 | { | |
b323314b AC |
300 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
301 | return NULL; | |
302 | else | |
ad10f812 | 303 | { |
b323314b AC |
304 | struct packet_reg *r = &rs->regs[regnum]; |
305 | gdb_assert (r->regnum == regnum); | |
306 | return r; | |
ad10f812 | 307 | } |
ad10f812 AC |
308 | } |
309 | ||
310 | static struct packet_reg * | |
311 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
312 | { | |
b323314b AC |
313 | int i; |
314 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 315 | { |
b323314b AC |
316 | struct packet_reg *r = &rs->regs[i]; |
317 | if (r->pnum == pnum) | |
318 | return r; | |
ad10f812 AC |
319 | } |
320 | return NULL; | |
d01949b6 AC |
321 | } |
322 | ||
3c3bea1c GS |
323 | /* FIXME: graces/2002-08-08: These variables should eventually be |
324 | bound to an instance of the target object (as in gdbarch-tdep()), | |
325 | when such a thing exists. */ | |
326 | ||
327 | /* This is set to the data address of the access causing the target | |
328 | to stop for a watchpoint. */ | |
329 | static CORE_ADDR remote_watch_data_address; | |
330 | ||
331 | /* This is non-zero if taregt stopped for a watchpoint. */ | |
332 | static int remote_stopped_by_watchpoint_p; | |
333 | ||
c906108c SS |
334 | |
335 | static struct target_ops remote_ops; | |
336 | ||
337 | static struct target_ops extended_remote_ops; | |
338 | ||
43ff13b4 JM |
339 | /* Temporary target ops. Just like the remote_ops and |
340 | extended_remote_ops, but with asynchronous support. */ | |
341 | static struct target_ops remote_async_ops; | |
342 | ||
343 | static struct target_ops extended_async_remote_ops; | |
344 | ||
6426a772 JM |
345 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
346 | ``forever'' still use the normal timeout mechanism. This is | |
347 | currently used by the ASYNC code to guarentee that target reads | |
348 | during the initial connect always time-out. Once getpkt has been | |
349 | modified to return a timeout indication and, in turn | |
350 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
351 | this can go away. */ | |
352 | static int wait_forever_enabled_p = 1; | |
353 | ||
354 | ||
c906108c SS |
355 | /* This variable chooses whether to send a ^C or a break when the user |
356 | requests program interruption. Although ^C is usually what remote | |
357 | systems expect, and that is the default here, sometimes a break is | |
358 | preferable instead. */ | |
359 | ||
360 | static int remote_break; | |
361 | ||
c906108c SS |
362 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
363 | remote_open knows that we don't have a file open when the program | |
364 | starts. */ | |
819cc324 | 365 | static struct serial *remote_desc = NULL; |
c906108c | 366 | |
c906108c SS |
367 | /* This variable sets the number of bits in an address that are to be |
368 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
369 | leading zeros, the entire address would be sent. This variable | |
370 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
371 | initial implementation of remote.c restricted the address sent in | |
372 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
373 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
374 | address was never sent. Since fixing this bug may cause a break in | |
375 | some remote targets this variable is principly provided to | |
376 | facilitate backward compatibility. */ | |
377 | ||
378 | static int remote_address_size; | |
379 | ||
6426a772 JM |
380 | /* Tempoary to track who currently owns the terminal. See |
381 | target_async_terminal_* for more details. */ | |
382 | ||
383 | static int remote_async_terminal_ours_p; | |
384 | ||
11cf8741 | 385 | \f |
11cf8741 | 386 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
387 | memory read/write packet. MIN ((rs->remote_packet_size), |
388 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
389 | values (fifo overruns, et.al.) and some users need larger values | |
390 | (speed up transfers). The variables ``preferred_*'' (the user | |
391 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
392 | (Positive - a soft limit, negative - a hard limit). */ | |
11cf8741 JM |
393 | |
394 | struct memory_packet_config | |
395 | { | |
396 | char *name; | |
397 | long size; | |
398 | int fixed_p; | |
399 | }; | |
400 | ||
401 | /* Compute the current size of a read/write packet. Since this makes | |
402 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
403 | ||
404 | static long | |
405 | get_memory_packet_size (struct memory_packet_config *config) | |
406 | { | |
d01949b6 | 407 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
408 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
409 | law?) that some hosts don't cope very well with large alloca() | |
410 | calls. Eventually the alloca() code will be replaced by calls to | |
411 | xmalloc() and make_cleanups() allowing this restriction to either | |
412 | be lifted or removed. */ | |
413 | #ifndef MAX_REMOTE_PACKET_SIZE | |
414 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
415 | #endif | |
416 | /* NOTE: 16 is just chosen at random. */ | |
417 | #ifndef MIN_REMOTE_PACKET_SIZE | |
418 | #define MIN_REMOTE_PACKET_SIZE 16 | |
419 | #endif | |
420 | long what_they_get; | |
421 | if (config->fixed_p) | |
422 | { | |
423 | if (config->size <= 0) | |
424 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
425 | else | |
426 | what_they_get = config->size; | |
427 | } | |
428 | else | |
429 | { | |
d01949b6 | 430 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
431 | /* Limit the packet to the size specified by the user. */ |
432 | if (config->size > 0 | |
433 | && what_they_get > config->size) | |
434 | what_they_get = config->size; | |
435 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
436 | if ((rs->actual_register_packet_size) > 0 |
437 | && what_they_get > (rs->actual_register_packet_size)) | |
438 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
439 | } |
440 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
441 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
442 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
443 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
444 | return what_they_get; | |
445 | } | |
446 | ||
447 | /* Update the size of a read/write packet. If they user wants | |
448 | something really big then do a sanity check. */ | |
449 | ||
450 | static void | |
451 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
452 | { | |
453 | int fixed_p = config->fixed_p; | |
454 | long size = config->size; | |
455 | if (args == NULL) | |
456 | error ("Argument required (integer, `fixed' or `limited')."); | |
457 | else if (strcmp (args, "hard") == 0 | |
458 | || strcmp (args, "fixed") == 0) | |
459 | fixed_p = 1; | |
460 | else if (strcmp (args, "soft") == 0 | |
461 | || strcmp (args, "limit") == 0) | |
462 | fixed_p = 0; | |
463 | else | |
464 | { | |
465 | char *end; | |
466 | size = strtoul (args, &end, 0); | |
467 | if (args == end) | |
468 | error ("Invalid %s (bad syntax).", config->name); | |
469 | #if 0 | |
470 | /* Instead of explicitly capping the size of a packet to | |
471 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
472 | instead allowed to set the size to something arbitrarily | |
473 | large. */ | |
474 | if (size > MAX_REMOTE_PACKET_SIZE) | |
475 | error ("Invalid %s (too large).", config->name); | |
476 | #endif | |
477 | } | |
478 | /* Extra checks? */ | |
479 | if (fixed_p && !config->fixed_p) | |
480 | { | |
481 | if (! query ("The target may not be able to correctly handle a %s\n" | |
482 | "of %ld bytes. Change the packet size? ", | |
483 | config->name, size)) | |
484 | error ("Packet size not changed."); | |
485 | } | |
486 | /* Update the config. */ | |
487 | config->fixed_p = fixed_p; | |
488 | config->size = size; | |
489 | } | |
490 | ||
491 | static void | |
492 | show_memory_packet_size (struct memory_packet_config *config) | |
493 | { | |
494 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
495 | if (config->fixed_p) | |
496 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
497 | get_memory_packet_size (config)); | |
498 | else | |
499 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
500 | get_memory_packet_size (config)); | |
501 | } | |
502 | ||
503 | static struct memory_packet_config memory_write_packet_config = | |
504 | { | |
505 | "memory-write-packet-size", | |
506 | }; | |
507 | ||
508 | static void | |
509 | set_memory_write_packet_size (char *args, int from_tty) | |
510 | { | |
511 | set_memory_packet_size (args, &memory_write_packet_config); | |
512 | } | |
513 | ||
514 | static void | |
515 | show_memory_write_packet_size (char *args, int from_tty) | |
516 | { | |
517 | show_memory_packet_size (&memory_write_packet_config); | |
518 | } | |
519 | ||
520 | static long | |
521 | get_memory_write_packet_size (void) | |
522 | { | |
523 | return get_memory_packet_size (&memory_write_packet_config); | |
524 | } | |
525 | ||
526 | static struct memory_packet_config memory_read_packet_config = | |
527 | { | |
528 | "memory-read-packet-size", | |
529 | }; | |
530 | ||
531 | static void | |
532 | set_memory_read_packet_size (char *args, int from_tty) | |
533 | { | |
534 | set_memory_packet_size (args, &memory_read_packet_config); | |
535 | } | |
536 | ||
537 | static void | |
538 | show_memory_read_packet_size (char *args, int from_tty) | |
539 | { | |
540 | show_memory_packet_size (&memory_read_packet_config); | |
541 | } | |
542 | ||
543 | static long | |
544 | get_memory_read_packet_size (void) | |
545 | { | |
d01949b6 | 546 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
547 | long size = get_memory_packet_size (&memory_read_packet_config); |
548 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
549 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
550 | increased beyond (rs->remote_packet_size). */ |
551 | if (size > (rs->remote_packet_size)) | |
552 | size = (rs->remote_packet_size); | |
11cf8741 JM |
553 | return size; |
554 | } | |
555 | ||
11cf8741 | 556 | \f |
5a2468f5 JM |
557 | /* Generic configuration support for packets the stub optionally |
558 | supports. Allows the user to specify the use of the packet as well | |
559 | as allowing GDB to auto-detect support in the remote stub. */ | |
560 | ||
561 | enum packet_support | |
562 | { | |
563 | PACKET_SUPPORT_UNKNOWN = 0, | |
564 | PACKET_ENABLE, | |
565 | PACKET_DISABLE | |
566 | }; | |
567 | ||
5a2468f5 JM |
568 | struct packet_config |
569 | { | |
5a2468f5 JM |
570 | char *name; |
571 | char *title; | |
7f19b9a2 | 572 | enum auto_boolean detect; |
5a2468f5 JM |
573 | enum packet_support support; |
574 | }; | |
575 | ||
d471ea57 AC |
576 | /* Analyze a packet's return value and update the packet config |
577 | accordingly. */ | |
578 | ||
579 | enum packet_result | |
580 | { | |
581 | PACKET_ERROR, | |
582 | PACKET_OK, | |
583 | PACKET_UNKNOWN | |
584 | }; | |
585 | ||
5a2468f5 | 586 | static void |
d471ea57 | 587 | update_packet_config (struct packet_config *config) |
5a2468f5 | 588 | { |
d471ea57 AC |
589 | switch (config->detect) |
590 | { | |
7f19b9a2 | 591 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
592 | config->support = PACKET_ENABLE; |
593 | break; | |
7f19b9a2 | 594 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
595 | config->support = PACKET_DISABLE; |
596 | break; | |
7f19b9a2 | 597 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
598 | config->support = PACKET_SUPPORT_UNKNOWN; |
599 | break; | |
600 | } | |
5a2468f5 JM |
601 | } |
602 | ||
603 | static void | |
fba45db2 | 604 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
605 | { |
606 | char *support = "internal-error"; | |
607 | switch (config->support) | |
608 | { | |
609 | case PACKET_ENABLE: | |
610 | support = "enabled"; | |
611 | break; | |
612 | case PACKET_DISABLE: | |
613 | support = "disabled"; | |
614 | break; | |
615 | case PACKET_SUPPORT_UNKNOWN: | |
616 | support = "unknown"; | |
617 | break; | |
618 | } | |
619 | switch (config->detect) | |
620 | { | |
7f19b9a2 | 621 | case AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
622 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
623 | config->name, config->title, support); | |
624 | break; | |
7f19b9a2 AC |
625 | case AUTO_BOOLEAN_TRUE: |
626 | case AUTO_BOOLEAN_FALSE: | |
8e248173 | 627 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", |
5a2468f5 | 628 | config->name, config->title, support); |
8e248173 | 629 | break; |
5a2468f5 JM |
630 | } |
631 | } | |
632 | ||
633 | static void | |
d471ea57 AC |
634 | add_packet_config_cmd (struct packet_config *config, |
635 | char *name, | |
636 | char *title, | |
e9e68a56 AC |
637 | cmd_sfunc_ftype *set_func, |
638 | cmd_sfunc_ftype *show_func, | |
d471ea57 AC |
639 | struct cmd_list_element **set_remote_list, |
640 | struct cmd_list_element **show_remote_list, | |
641 | int legacy) | |
642 | { | |
643 | struct cmd_list_element *set_cmd; | |
644 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
645 | char *set_doc; |
646 | char *show_doc; | |
3b64bf98 AC |
647 | char *help_doc; |
648 | char *print; | |
d471ea57 | 649 | char *cmd_name; |
5a2468f5 JM |
650 | config->name = name; |
651 | config->title = title; | |
7f19b9a2 | 652 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 653 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
654 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
655 | name, title); | |
656 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
657 | name, title); | |
3b64bf98 AC |
658 | print = xstrprintf ("Current use of remote protocol `%s' (%s) is %%s", |
659 | name, title); | |
d471ea57 | 660 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 661 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 AC |
662 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
663 | &config->detect, set_doc, show_doc, | |
3b64bf98 | 664 | "", print, |
e9e68a56 AC |
665 | set_func, show_func, |
666 | set_remote_list, show_remote_list); | |
d471ea57 AC |
667 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ |
668 | if (legacy) | |
669 | { | |
670 | char *legacy_name; | |
b435e160 | 671 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
672 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
673 | set_remote_list); | |
674 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
675 | show_remote_list); | |
676 | } | |
5a2468f5 JM |
677 | } |
678 | ||
d471ea57 AC |
679 | static enum packet_result |
680 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 681 | { |
d471ea57 | 682 | if (buf[0] != '\0') |
5a2468f5 | 683 | { |
d471ea57 AC |
684 | /* The stub recognized the packet request. Check that the |
685 | operation succeeded. */ | |
686 | switch (config->support) | |
687 | { | |
688 | case PACKET_SUPPORT_UNKNOWN: | |
689 | if (remote_debug) | |
690 | fprintf_unfiltered (gdb_stdlog, | |
691 | "Packet %s (%s) is supported\n", | |
692 | config->name, config->title); | |
693 | config->support = PACKET_ENABLE; | |
694 | break; | |
695 | case PACKET_DISABLE: | |
8e65ff28 AC |
696 | internal_error (__FILE__, __LINE__, |
697 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
698 | break; |
699 | case PACKET_ENABLE: | |
700 | break; | |
701 | } | |
702 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
703 | /* "OK" - definitly OK. */ | |
704 | return PACKET_OK; | |
705 | if (buf[0] == 'E' | |
706 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
707 | && buf[3] == '\0') | |
708 | /* "Enn" - definitly an error. */ | |
709 | return PACKET_ERROR; | |
710 | /* The packet may or may not be OK. Just assume it is */ | |
711 | return PACKET_OK; | |
712 | } | |
713 | else | |
714 | { | |
715 | /* The stub does not support the packet. */ | |
716 | switch (config->support) | |
717 | { | |
718 | case PACKET_ENABLE: | |
7f19b9a2 | 719 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 AC |
720 | /* If the stub previously indicated that the packet was |
721 | supported then there is a protocol error.. */ | |
722 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
723 | config->name, config->title); | |
724 | else | |
725 | /* The user set it wrong. */ | |
726 | error ("Enabled packet %s (%s) not recognized by stub", | |
727 | config->name, config->title); | |
728 | break; | |
729 | case PACKET_SUPPORT_UNKNOWN: | |
730 | if (remote_debug) | |
731 | fprintf_unfiltered (gdb_stdlog, | |
732 | "Packet %s (%s) is NOT supported\n", | |
733 | config->name, config->title); | |
734 | config->support = PACKET_DISABLE; | |
735 | break; | |
736 | case PACKET_DISABLE: | |
737 | break; | |
738 | } | |
739 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
740 | } |
741 | } | |
742 | ||
506fb367 DJ |
743 | /* Should we try the 'vCont' (descriptive resume) request? */ |
744 | static struct packet_config remote_protocol_vcont; | |
745 | ||
746 | static void | |
747 | set_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
748 | struct cmd_list_element *c) | |
749 | { | |
750 | update_packet_config (&remote_protocol_vcont); | |
751 | } | |
752 | ||
753 | static void | |
754 | show_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
755 | struct cmd_list_element *c) | |
756 | { | |
757 | show_packet_config_cmd (&remote_protocol_vcont); | |
758 | } | |
759 | ||
dc8acb97 MS |
760 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
761 | static struct packet_config remote_protocol_qSymbol; | |
762 | ||
763 | static void | |
764 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
765 | struct cmd_list_element *c) | |
766 | { | |
767 | update_packet_config (&remote_protocol_qSymbol); | |
768 | } | |
769 | ||
770 | static void | |
e9e68a56 AC |
771 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, |
772 | struct cmd_list_element *c) | |
dc8acb97 MS |
773 | { |
774 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
775 | } | |
776 | ||
5a2468f5 JM |
777 | /* Should we try the 'P' (set register) request? */ |
778 | ||
779 | static struct packet_config remote_protocol_P; | |
780 | ||
781 | static void | |
fba45db2 KB |
782 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
783 | struct cmd_list_element *c) | |
5a2468f5 | 784 | { |
d471ea57 | 785 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
786 | } |
787 | ||
788 | static void | |
e9e68a56 AC |
789 | show_remote_protocol_P_packet_cmd (char *args, int from_tty, |
790 | struct cmd_list_element *c) | |
5a2468f5 JM |
791 | { |
792 | show_packet_config_cmd (&remote_protocol_P); | |
793 | } | |
794 | ||
d471ea57 AC |
795 | /* Should we try one of the 'Z' requests? */ |
796 | ||
797 | enum Z_packet_type | |
798 | { | |
799 | Z_PACKET_SOFTWARE_BP, | |
800 | Z_PACKET_HARDWARE_BP, | |
801 | Z_PACKET_WRITE_WP, | |
802 | Z_PACKET_READ_WP, | |
803 | Z_PACKET_ACCESS_WP, | |
804 | NR_Z_PACKET_TYPES | |
805 | }; | |
96baa820 | 806 | |
d471ea57 AC |
807 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
808 | ||
809 | /* FIXME: Instead of having all these boiler plate functions, the | |
810 | command callback should include a context argument. */ | |
811 | ||
812 | static void | |
813 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
814 | struct cmd_list_element *c) | |
815 | { | |
816 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
817 | } | |
818 | ||
819 | static void | |
e9e68a56 AC |
820 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, |
821 | struct cmd_list_element *c) | |
d471ea57 AC |
822 | { |
823 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
824 | } | |
825 | ||
826 | static void | |
827 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
828 | struct cmd_list_element *c) | |
829 | { | |
830 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
831 | } | |
832 | ||
833 | static void | |
e9e68a56 AC |
834 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, |
835 | struct cmd_list_element *c) | |
d471ea57 AC |
836 | { |
837 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
838 | } | |
839 | ||
840 | static void | |
841 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
842 | struct cmd_list_element *c) | |
843 | { | |
844 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
845 | } | |
846 | ||
847 | static void | |
e9e68a56 AC |
848 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, |
849 | struct cmd_list_element *c) | |
d471ea57 AC |
850 | { |
851 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
852 | } | |
853 | ||
854 | static void | |
855 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
856 | struct cmd_list_element *c) | |
857 | { | |
858 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
859 | } | |
860 | ||
861 | static void | |
e9e68a56 AC |
862 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, |
863 | struct cmd_list_element *c) | |
d471ea57 AC |
864 | { |
865 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
866 | } | |
867 | ||
868 | static void | |
869 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
870 | struct cmd_list_element *c) | |
871 | { | |
872 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
873 | } | |
874 | ||
875 | static void | |
e9e68a56 AC |
876 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, |
877 | struct cmd_list_element *c) | |
d471ea57 AC |
878 | { |
879 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
880 | } | |
881 | ||
882 | /* For compatibility with older distributions. Provide a ``set remote | |
883 | Z-packet ...'' command that updates all the Z packet types. */ | |
884 | ||
7f19b9a2 | 885 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
886 | |
887 | static void | |
fba45db2 KB |
888 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
889 | struct cmd_list_element *c) | |
96baa820 | 890 | { |
d471ea57 AC |
891 | int i; |
892 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
893 | { | |
894 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
895 | update_packet_config (&remote_protocol_Z[i]); | |
896 | } | |
96baa820 JM |
897 | } |
898 | ||
899 | static void | |
e9e68a56 AC |
900 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
901 | struct cmd_list_element *c) | |
96baa820 | 902 | { |
d471ea57 AC |
903 | int i; |
904 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
905 | { | |
906 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
907 | } | |
96baa820 JM |
908 | } |
909 | ||
910 | /* Should we try the 'X' (remote binary download) packet? | |
911 | ||
912 | This variable (available to the user via "set remote X-packet") | |
913 | dictates whether downloads are sent in binary (via the 'X' packet). | |
914 | We assume that the stub can, and attempt to do it. This will be | |
915 | cleared if the stub does not understand it. This switch is still | |
916 | needed, though in cases when the packet is supported in the stub, | |
917 | but the connection does not allow it (i.e., 7-bit serial connection | |
918 | only). */ | |
919 | ||
920 | static struct packet_config remote_protocol_binary_download; | |
921 | ||
9d1f7ab2 MS |
922 | /* Should we try the 'ThreadInfo' query packet? |
923 | ||
924 | This variable (NOT available to the user: auto-detect only!) | |
925 | determines whether GDB will use the new, simpler "ThreadInfo" | |
926 | query or the older, more complex syntax for thread queries. | |
802188a7 | 927 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
928 | and set to false when the target fails to recognize it). */ |
929 | ||
930 | static int use_threadinfo_query; | |
931 | static int use_threadextra_query; | |
932 | ||
96baa820 JM |
933 | static void |
934 | set_remote_protocol_binary_download_cmd (char *args, | |
935 | int from_tty, | |
936 | struct cmd_list_element *c) | |
937 | { | |
d471ea57 | 938 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
939 | } |
940 | ||
941 | static void | |
e9e68a56 AC |
942 | show_remote_protocol_binary_download_cmd (char *args, int from_tty, |
943 | struct cmd_list_element *c) | |
96baa820 JM |
944 | { |
945 | show_packet_config_cmd (&remote_protocol_binary_download); | |
946 | } | |
947 | ||
802188a7 RM |
948 | /* Should we try the 'qPart:auxv' (target auxiliary vector read) request? */ |
949 | static struct packet_config remote_protocol_qPart_auxv; | |
950 | ||
951 | static void | |
952 | set_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
953 | struct cmd_list_element *c) | |
954 | { | |
955 | update_packet_config (&remote_protocol_qPart_auxv); | |
956 | } | |
957 | ||
958 | static void | |
959 | show_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
960 | struct cmd_list_element *c) | |
961 | { | |
962 | show_packet_config_cmd (&remote_protocol_qPart_auxv); | |
963 | } | |
964 | ||
b96ec7ac AC |
965 | static struct packet_config remote_protocol_p; |
966 | ||
967 | static void | |
968 | set_remote_protocol_p_packet_cmd (char *args, int from_tty, | |
969 | struct cmd_list_element *c) | |
970 | { | |
971 | update_packet_config (&remote_protocol_p); | |
972 | } | |
973 | ||
974 | static void | |
975 | show_remote_protocol_p_packet_cmd (char *args, int from_tty, | |
976 | struct cmd_list_element *c) | |
977 | { | |
978 | show_packet_config_cmd (&remote_protocol_p); | |
979 | } | |
980 | ||
981 | ||
c906108c | 982 | |
43ff13b4 | 983 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
ae44c0c4 AC |
984 | static void *sigint_remote_twice_token; |
985 | static void *sigint_remote_token; | |
43ff13b4 | 986 | |
c906108c SS |
987 | /* These are pointers to hook functions that may be set in order to |
988 | modify resume/wait behavior for a particular architecture. */ | |
989 | ||
9a4105ab AC |
990 | void (*deprecated_target_resume_hook) (void); |
991 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
992 | \f |
993 | ||
c5aa993b | 994 | |
c906108c SS |
995 | /* These are the threads which we last sent to the remote system. |
996 | -1 for all or -2 for not sent yet. */ | |
997 | static int general_thread; | |
cce74817 | 998 | static int continue_thread; |
c906108c SS |
999 | |
1000 | /* Call this function as a result of | |
1001 | 1) A halt indication (T packet) containing a thread id | |
1002 | 2) A direct query of currthread | |
1003 | 3) Successful execution of set thread | |
1004 | */ | |
1005 | ||
1006 | static void | |
fba45db2 | 1007 | record_currthread (int currthread) |
c906108c | 1008 | { |
c906108c | 1009 | general_thread = currthread; |
cce74817 | 1010 | |
c906108c SS |
1011 | /* If this is a new thread, add it to GDB's thread list. |
1012 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1013 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1014 | { |
39f77062 | 1015 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1016 | ui_out_text (uiout, "[New "); |
39f77062 | 1017 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1018 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1019 | } |
c906108c SS |
1020 | } |
1021 | ||
1022 | #define MAGIC_NULL_PID 42000 | |
1023 | ||
1024 | static void | |
fba45db2 | 1025 | set_thread (int th, int gen) |
c906108c | 1026 | { |
d01949b6 AC |
1027 | struct remote_state *rs = get_remote_state (); |
1028 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1029 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1030 | |
1031 | if (state == th) | |
1032 | return; | |
1033 | ||
1034 | buf[0] = 'H'; | |
1035 | buf[1] = gen ? 'g' : 'c'; | |
1036 | if (th == MAGIC_NULL_PID) | |
1037 | { | |
1038 | buf[2] = '0'; | |
1039 | buf[3] = '\0'; | |
1040 | } | |
1041 | else if (th < 0) | |
1042 | sprintf (&buf[2], "-%x", -th); | |
1043 | else | |
1044 | sprintf (&buf[2], "%x", th); | |
1045 | putpkt (buf); | |
d01949b6 | 1046 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1047 | if (gen) |
c5aa993b | 1048 | general_thread = th; |
c906108c | 1049 | else |
cce74817 | 1050 | continue_thread = th; |
c906108c SS |
1051 | } |
1052 | \f | |
1053 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1054 | ||
1055 | static int | |
39f77062 | 1056 | remote_thread_alive (ptid_t ptid) |
c906108c | 1057 | { |
39f77062 | 1058 | int tid = PIDGET (ptid); |
cce74817 | 1059 | char buf[16]; |
c906108c | 1060 | |
cce74817 JM |
1061 | if (tid < 0) |
1062 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1063 | else |
cce74817 | 1064 | sprintf (buf, "T%08x", tid); |
c906108c | 1065 | putpkt (buf); |
c2d11a7d | 1066 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1067 | return (buf[0] == 'O' && buf[1] == 'K'); |
1068 | } | |
1069 | ||
1070 | /* About these extended threadlist and threadinfo packets. They are | |
1071 | variable length packets but, the fields within them are often fixed | |
1072 | length. They are redundent enough to send over UDP as is the | |
1073 | remote protocol in general. There is a matching unit test module | |
1074 | in libstub. */ | |
1075 | ||
cce74817 JM |
1076 | #define OPAQUETHREADBYTES 8 |
1077 | ||
1078 | /* a 64 bit opaque identifier */ | |
1079 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1080 | ||
1081 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1082 | protocol encoding, and remote.c. it is not particularly changable */ | |
1083 | ||
1084 | /* Right now, the internal structure is int. We want it to be bigger. | |
1085 | Plan to fix this. | |
c5aa993b | 1086 | */ |
cce74817 | 1087 | |
c5aa993b | 1088 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1089 | |
9d1f7ab2 | 1090 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1091 | equivalint to the reply of the remote threadinfo packet */ |
1092 | ||
1093 | struct gdb_ext_thread_info | |
c5aa993b JM |
1094 | { |
1095 | threadref threadid; /* External form of thread reference */ | |
1096 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1097 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1098 | char shortname[32]; /* To be used to name threads */ | |
1099 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1100 | }; | |
cce74817 JM |
1101 | |
1102 | /* The volume of remote transfers can be limited by submitting | |
1103 | a mask containing bits specifying the desired information. | |
1104 | Use a union of these values as the 'selection' parameter to | |
1105 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1106 | */ |
cce74817 JM |
1107 | |
1108 | #define TAG_THREADID 1 | |
1109 | #define TAG_EXISTS 2 | |
1110 | #define TAG_DISPLAY 4 | |
1111 | #define TAG_THREADNAME 8 | |
c5aa993b | 1112 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1113 | |
c906108c SS |
1114 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1115 | ||
b2dd6311 | 1116 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1117 | |
a14ed312 | 1118 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1119 | |
a14ed312 | 1120 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1121 | |
a14ed312 | 1122 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1123 | |
a14ed312 | 1124 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1125 | |
a14ed312 | 1126 | static char *pack_int (char *buf, int value); |
cce74817 | 1127 | |
a14ed312 | 1128 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1129 | |
a14ed312 | 1130 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1131 | |
a14ed312 | 1132 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1133 | |
a14ed312 | 1134 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1135 | |
a14ed312 | 1136 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1137 | |
a14ed312 | 1138 | static int threadref_to_int (threadref * ref); |
cce74817 | 1139 | |
a14ed312 | 1140 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1141 | |
a14ed312 | 1142 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1143 | |
a14ed312 | 1144 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1145 | |
a14ed312 KB |
1146 | static int remote_unpack_thread_info_response (char *pkt, |
1147 | threadref * expectedref, | |
1148 | struct gdb_ext_thread_info | |
1149 | *info); | |
cce74817 JM |
1150 | |
1151 | ||
a14ed312 KB |
1152 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1153 | struct gdb_ext_thread_info *info); | |
cce74817 | 1154 | |
a14ed312 KB |
1155 | static char *pack_threadlist_request (char *pkt, int startflag, |
1156 | int threadcount, | |
1157 | threadref * nextthread); | |
cce74817 | 1158 | |
a14ed312 KB |
1159 | static int parse_threadlist_response (char *pkt, |
1160 | int result_limit, | |
1161 | threadref * original_echo, | |
1162 | threadref * resultlist, int *doneflag); | |
cce74817 | 1163 | |
a14ed312 KB |
1164 | static int remote_get_threadlist (int startflag, |
1165 | threadref * nextthread, | |
1166 | int result_limit, | |
1167 | int *done, | |
1168 | int *result_count, threadref * threadlist); | |
cce74817 | 1169 | |
c5aa993b | 1170 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1171 | |
a14ed312 KB |
1172 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1173 | void *context, int looplimit); | |
cce74817 | 1174 | |
a14ed312 | 1175 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1176 | |
c906108c SS |
1177 | /* encode 64 bits in 16 chars of hex */ |
1178 | ||
1179 | static const char hexchars[] = "0123456789abcdef"; | |
1180 | ||
1181 | static int | |
fba45db2 | 1182 | ishex (int ch, int *val) |
c906108c SS |
1183 | { |
1184 | if ((ch >= 'a') && (ch <= 'f')) | |
1185 | { | |
1186 | *val = ch - 'a' + 10; | |
1187 | return 1; | |
1188 | } | |
1189 | if ((ch >= 'A') && (ch <= 'F')) | |
1190 | { | |
1191 | *val = ch - 'A' + 10; | |
1192 | return 1; | |
1193 | } | |
1194 | if ((ch >= '0') && (ch <= '9')) | |
1195 | { | |
1196 | *val = ch - '0'; | |
1197 | return 1; | |
1198 | } | |
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | static int | |
fba45db2 | 1203 | stubhex (int ch) |
c906108c SS |
1204 | { |
1205 | if (ch >= 'a' && ch <= 'f') | |
1206 | return ch - 'a' + 10; | |
1207 | if (ch >= '0' && ch <= '9') | |
1208 | return ch - '0'; | |
1209 | if (ch >= 'A' && ch <= 'F') | |
1210 | return ch - 'A' + 10; | |
1211 | return -1; | |
1212 | } | |
1213 | ||
1214 | static int | |
fba45db2 | 1215 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1216 | { |
1217 | int nibble; | |
1218 | int retval = 0; | |
1219 | ||
1220 | while (fieldlength) | |
1221 | { | |
1222 | nibble = stubhex (*buff++); | |
1223 | retval |= nibble; | |
1224 | fieldlength--; | |
1225 | if (fieldlength) | |
1226 | retval = retval << 4; | |
1227 | } | |
1228 | return retval; | |
1229 | } | |
1230 | ||
1231 | char * | |
fba45db2 | 1232 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1233 | ULONGEST *result) |
c906108c SS |
1234 | { |
1235 | int nibble; | |
1236 | int retval = 0; | |
1237 | ||
1238 | while (ishex (*buff, &nibble)) | |
1239 | { | |
1240 | buff++; | |
1241 | retval = retval << 4; | |
1242 | retval |= nibble & 0x0f; | |
1243 | } | |
1244 | *result = retval; | |
1245 | return buff; | |
1246 | } | |
1247 | ||
1248 | static char * | |
fba45db2 | 1249 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1250 | { |
1251 | ishex (*buf++, val); | |
1252 | return buf; | |
1253 | } | |
1254 | ||
1255 | static char * | |
fba45db2 | 1256 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1257 | { |
1258 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1259 | return buf; | |
1260 | } | |
1261 | ||
1262 | static char * | |
fba45db2 | 1263 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1264 | { |
1265 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1266 | *pkt++ = hexchars[(byte & 0xf)]; | |
1267 | return pkt; | |
1268 | } | |
1269 | ||
1270 | static char * | |
fba45db2 | 1271 | unpack_byte (char *buf, int *value) |
c906108c SS |
1272 | { |
1273 | *value = stub_unpack_int (buf, 2); | |
1274 | return buf + 2; | |
1275 | } | |
1276 | ||
1277 | static char * | |
fba45db2 | 1278 | pack_int (char *buf, int value) |
c906108c SS |
1279 | { |
1280 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1281 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1282 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1283 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1284 | return buf; | |
1285 | } | |
1286 | ||
1287 | static char * | |
fba45db2 | 1288 | unpack_int (char *buf, int *value) |
c906108c SS |
1289 | { |
1290 | *value = stub_unpack_int (buf, 8); | |
1291 | return buf + 8; | |
1292 | } | |
1293 | ||
c5aa993b | 1294 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1295 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1296 | |
1297 | static char * | |
fba45db2 | 1298 | pack_string (char *pkt, char *string) |
c906108c SS |
1299 | { |
1300 | char ch; | |
1301 | int len; | |
1302 | ||
1303 | len = strlen (string); | |
1304 | if (len > 200) | |
1305 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1306 | pkt = pack_hex_byte (pkt, len); | |
1307 | while (len-- > 0) | |
1308 | { | |
1309 | ch = *string++; | |
1310 | if ((ch == '\0') || (ch == '#')) | |
1311 | ch = '*'; /* Protect encapsulation */ | |
1312 | *pkt++ = ch; | |
1313 | } | |
1314 | return pkt; | |
1315 | } | |
1316 | #endif /* 0 (unused) */ | |
1317 | ||
1318 | static char * | |
fba45db2 | 1319 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1320 | { |
1321 | while (length--) | |
1322 | *dest++ = *src++; | |
1323 | *dest = '\0'; | |
1324 | return src; | |
1325 | } | |
1326 | ||
1327 | static char * | |
fba45db2 | 1328 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1329 | { |
1330 | char *limit; | |
1331 | unsigned char *altid; | |
1332 | ||
1333 | altid = (unsigned char *) id; | |
1334 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1335 | while (pkt < limit) | |
1336 | pkt = pack_hex_byte (pkt, *altid++); | |
1337 | return pkt; | |
1338 | } | |
1339 | ||
1340 | ||
1341 | static char * | |
fba45db2 | 1342 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1343 | { |
1344 | char *altref; | |
1345 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1346 | int x, y; | |
1347 | ||
1348 | altref = (char *) id; | |
1349 | ||
1350 | while (inbuf < limit) | |
1351 | { | |
1352 | x = stubhex (*inbuf++); | |
1353 | y = stubhex (*inbuf++); | |
1354 | *altref++ = (x << 4) | y; | |
1355 | } | |
1356 | return inbuf; | |
1357 | } | |
1358 | ||
1359 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1360 | ints. This is due to a mismatch of specifications. We would like | |
1361 | to use 64bit thread references internally. This is an adapter | |
1362 | function. */ | |
1363 | ||
1364 | void | |
fba45db2 | 1365 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1366 | { |
1367 | unsigned char *scan; | |
1368 | ||
1369 | scan = (unsigned char *) id; | |
1370 | { | |
1371 | int i = 4; | |
1372 | while (i--) | |
1373 | *scan++ = 0; | |
1374 | } | |
1375 | *scan++ = (value >> 24) & 0xff; | |
1376 | *scan++ = (value >> 16) & 0xff; | |
1377 | *scan++ = (value >> 8) & 0xff; | |
1378 | *scan++ = (value & 0xff); | |
1379 | } | |
1380 | ||
1381 | static int | |
fba45db2 | 1382 | threadref_to_int (threadref *ref) |
c906108c SS |
1383 | { |
1384 | int i, value = 0; | |
1385 | unsigned char *scan; | |
1386 | ||
1387 | scan = (char *) ref; | |
1388 | scan += 4; | |
1389 | i = 4; | |
1390 | while (i-- > 0) | |
1391 | value = (value << 8) | ((*scan++) & 0xff); | |
1392 | return value; | |
1393 | } | |
1394 | ||
1395 | static void | |
fba45db2 | 1396 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1397 | { |
1398 | int i; | |
1399 | unsigned char *csrc, *cdest; | |
1400 | ||
1401 | csrc = (unsigned char *) src; | |
1402 | cdest = (unsigned char *) dest; | |
1403 | i = 8; | |
1404 | while (i--) | |
1405 | *cdest++ = *csrc++; | |
1406 | } | |
1407 | ||
1408 | static int | |
fba45db2 | 1409 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1410 | { |
1411 | /* things are broken right now, so just assume we got a match */ | |
1412 | #if 0 | |
1413 | unsigned char *srcp, *destp; | |
1414 | int i, result; | |
1415 | srcp = (char *) src; | |
1416 | destp = (char *) dest; | |
1417 | ||
1418 | result = 1; | |
1419 | while (i-- > 0) | |
1420 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1421 | return result; | |
1422 | #endif | |
1423 | return 1; | |
1424 | } | |
1425 | ||
1426 | /* | |
c5aa993b JM |
1427 | threadid:1, # always request threadid |
1428 | context_exists:2, | |
1429 | display:4, | |
1430 | unique_name:8, | |
1431 | more_display:16 | |
1432 | */ | |
c906108c SS |
1433 | |
1434 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1435 | ||
1436 | static char * | |
fba45db2 | 1437 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1438 | { |
1439 | *pkt++ = 'q'; /* Info Query */ | |
1440 | *pkt++ = 'P'; /* process or thread info */ | |
1441 | pkt = pack_int (pkt, mode); /* mode */ | |
1442 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1443 | *pkt = '\0'; /* terminate */ | |
1444 | return pkt; | |
1445 | } | |
1446 | ||
1447 | /* These values tag the fields in a thread info response packet */ | |
1448 | /* Tagging the fields allows us to request specific fields and to | |
1449 | add more fields as time goes by */ | |
1450 | ||
c5aa993b JM |
1451 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1452 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1453 | fetch registers and its stack */ | |
1454 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1455 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
802188a7 | 1456 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
c5aa993b | 1457 | the process */ |
c906108c SS |
1458 | |
1459 | static int | |
fba45db2 KB |
1460 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1461 | struct gdb_ext_thread_info *info) | |
c906108c | 1462 | { |
d01949b6 | 1463 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1464 | int mask, length; |
1465 | unsigned int tag; | |
1466 | threadref ref; | |
d01949b6 | 1467 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1468 | int retval = 1; |
1469 | ||
1470 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1471 | info->active = 0; | |
1472 | info->display[0] = '\0'; | |
1473 | info->shortname[0] = '\0'; | |
1474 | info->more_display[0] = '\0'; | |
1475 | ||
1476 | /* Assume the characters indicating the packet type have been stripped */ | |
1477 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1478 | pkt = unpack_threadid (pkt, &ref); | |
1479 | ||
1480 | if (mask == 0) | |
1481 | warning ("Incomplete response to threadinfo request\n"); | |
1482 | if (!threadmatch (&ref, expectedref)) | |
1483 | { /* This is an answer to a different request */ | |
1484 | warning ("ERROR RMT Thread info mismatch\n"); | |
1485 | return 0; | |
1486 | } | |
1487 | copy_threadref (&info->threadid, &ref); | |
1488 | ||
1489 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1490 | ||
c5aa993b | 1491 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1492 | { |
1493 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1494 | pkt = unpack_byte (pkt, &length); /* length */ | |
1495 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1496 | { | |
1497 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1498 | retval = 0; | |
1499 | break; | |
1500 | } | |
1501 | if (tag == TAG_THREADID) | |
1502 | { | |
1503 | if (length != 16) | |
1504 | { | |
1505 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1506 | retval = 0; | |
1507 | break; | |
1508 | } | |
1509 | pkt = unpack_threadid (pkt, &ref); | |
1510 | mask = mask & ~TAG_THREADID; | |
1511 | continue; | |
1512 | } | |
1513 | if (tag == TAG_EXISTS) | |
1514 | { | |
1515 | info->active = stub_unpack_int (pkt, length); | |
1516 | pkt += length; | |
1517 | mask = mask & ~(TAG_EXISTS); | |
1518 | if (length > 8) | |
1519 | { | |
1520 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1521 | retval = 0; | |
1522 | break; | |
1523 | } | |
1524 | continue; | |
1525 | } | |
1526 | if (tag == TAG_THREADNAME) | |
1527 | { | |
1528 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1529 | mask = mask & ~TAG_THREADNAME; | |
1530 | continue; | |
1531 | } | |
1532 | if (tag == TAG_DISPLAY) | |
1533 | { | |
1534 | pkt = unpack_string (pkt, &info->display[0], length); | |
1535 | mask = mask & ~TAG_DISPLAY; | |
1536 | continue; | |
1537 | } | |
1538 | if (tag == TAG_MOREDISPLAY) | |
1539 | { | |
1540 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1541 | mask = mask & ~TAG_MOREDISPLAY; | |
1542 | continue; | |
1543 | } | |
1544 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1545 | break; /* Not a tag we know about */ | |
1546 | } | |
1547 | return retval; | |
1548 | } | |
1549 | ||
1550 | static int | |
fba45db2 KB |
1551 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1552 | struct gdb_ext_thread_info *info) | |
c906108c | 1553 | { |
d01949b6 | 1554 | struct remote_state *rs = get_remote_state (); |
c906108c | 1555 | int result; |
d01949b6 | 1556 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1557 | |
1558 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1559 | putpkt (threadinfo_pkt); | |
d01949b6 | 1560 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1561 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1562 | info); | |
1563 | return result; | |
1564 | } | |
1565 | ||
c906108c SS |
1566 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1567 | ||
1568 | static char * | |
fba45db2 KB |
1569 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1570 | threadref *nextthread) | |
c906108c SS |
1571 | { |
1572 | *pkt++ = 'q'; /* info query packet */ | |
1573 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1574 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1575 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1576 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1577 | *pkt = '\0'; | |
1578 | return pkt; | |
1579 | } | |
1580 | ||
1581 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1582 | ||
1583 | static int | |
fba45db2 KB |
1584 | parse_threadlist_response (char *pkt, int result_limit, |
1585 | threadref *original_echo, threadref *resultlist, | |
1586 | int *doneflag) | |
c906108c | 1587 | { |
d01949b6 | 1588 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1589 | char *limit; |
1590 | int count, resultcount, done; | |
1591 | ||
1592 | resultcount = 0; | |
1593 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1594 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1595 | pkt = unpack_byte (pkt, &count); /* count field */ |
1596 | pkt = unpack_nibble (pkt, &done); | |
1597 | /* The first threadid is the argument threadid. */ | |
1598 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1599 | while ((count-- > 0) && (pkt < limit)) | |
1600 | { | |
1601 | pkt = unpack_threadid (pkt, resultlist++); | |
1602 | if (resultcount++ >= result_limit) | |
1603 | break; | |
1604 | } | |
1605 | if (doneflag) | |
1606 | *doneflag = done; | |
1607 | return resultcount; | |
1608 | } | |
1609 | ||
1610 | static int | |
fba45db2 KB |
1611 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1612 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1613 | { |
d01949b6 | 1614 | struct remote_state *rs = get_remote_state (); |
c906108c | 1615 | static threadref echo_nextthread; |
d01949b6 AC |
1616 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1617 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1618 | int result = 1; |
1619 | ||
1620 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1621 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1622 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1623 | |
1624 | pack_threadlist_request (threadlist_packet, | |
1625 | startflag, result_limit, nextthread); | |
1626 | putpkt (threadlist_packet); | |
d01949b6 | 1627 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1628 | |
1629 | *result_count = | |
1630 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1631 | threadlist, done); | |
1632 | ||
1633 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1634 | { | |
1635 | /* FIXME: This is a good reason to drop the packet */ | |
1636 | /* Possably, there is a duplicate response */ | |
1637 | /* Possabilities : | |
1638 | retransmit immediatly - race conditions | |
1639 | retransmit after timeout - yes | |
1640 | exit | |
1641 | wait for packet, then exit | |
1642 | */ | |
1643 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1644 | return 0; /* I choose simply exiting */ | |
1645 | } | |
1646 | if (*result_count <= 0) | |
1647 | { | |
1648 | if (*done != 1) | |
1649 | { | |
1650 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1651 | result = 0; | |
1652 | } | |
1653 | return result; /* break; */ | |
1654 | } | |
1655 | if (*result_count > result_limit) | |
1656 | { | |
1657 | *result_count = 0; | |
1658 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1659 | return 0; | |
1660 | } | |
1661 | return result; | |
1662 | } | |
1663 | ||
1664 | /* This is the interface between remote and threads, remotes upper interface */ | |
1665 | ||
1666 | /* remote_find_new_threads retrieves the thread list and for each | |
1667 | thread in the list, looks up the thread in GDB's internal list, | |
1668 | ading the thread if it does not already exist. This involves | |
1669 | getting partial thread lists from the remote target so, polling the | |
1670 | quit_flag is required. */ | |
1671 | ||
1672 | ||
1673 | /* About this many threadisds fit in a packet. */ | |
1674 | ||
1675 | #define MAXTHREADLISTRESULTS 32 | |
1676 | ||
1677 | static int | |
fba45db2 KB |
1678 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1679 | int looplimit) | |
c906108c SS |
1680 | { |
1681 | int done, i, result_count; | |
1682 | int startflag = 1; | |
1683 | int result = 1; | |
1684 | int loopcount = 0; | |
1685 | static threadref nextthread; | |
1686 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1687 | ||
1688 | done = 0; | |
1689 | while (!done) | |
1690 | { | |
1691 | if (loopcount++ > looplimit) | |
1692 | { | |
1693 | result = 0; | |
1694 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1695 | break; | |
1696 | } | |
1697 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1698 | &done, &result_count, resultthreadlist)) | |
1699 | { | |
1700 | result = 0; | |
1701 | break; | |
1702 | } | |
1703 | /* clear for later iterations */ | |
1704 | startflag = 0; | |
1705 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1706 | if (result_count >= 1) | |
1707 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1708 | i = 0; | |
1709 | while (result_count--) | |
1710 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1711 | break; | |
1712 | } | |
1713 | return result; | |
1714 | } | |
1715 | ||
1716 | static int | |
fba45db2 | 1717 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1718 | { |
39f77062 | 1719 | ptid_t ptid; |
c906108c | 1720 | |
39f77062 KB |
1721 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1722 | ||
1723 | if (!in_thread_list (ptid)) | |
1724 | add_thread (ptid); | |
c906108c SS |
1725 | return 1; /* continue iterator */ |
1726 | } | |
1727 | ||
1728 | #define CRAZY_MAX_THREADS 1000 | |
1729 | ||
39f77062 KB |
1730 | static ptid_t |
1731 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1732 | { |
d01949b6 AC |
1733 | struct remote_state *rs = get_remote_state (); |
1734 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1735 | |
1736 | putpkt ("qC"); | |
d01949b6 | 1737 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1738 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1739 | /* Use strtoul here, so we'll correctly parse values whose highest |
1740 | bit is set. The protocol carries them as a simple series of | |
1741 | hex digits; in the absence of a sign, strtol will see such | |
1742 | values as positive numbers out of range for signed 'long', and | |
1743 | return LONG_MAX to indicate an overflow. */ | |
1744 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1745 | else |
1746 | return oldpid; | |
1747 | } | |
1748 | ||
802188a7 RM |
1749 | /* Find new threads for info threads command. |
1750 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1751 | */ |
cce74817 JM |
1752 | |
1753 | static void | |
fba45db2 | 1754 | remote_find_new_threads (void) |
c906108c | 1755 | { |
c5aa993b JM |
1756 | remote_threadlist_iterator (remote_newthread_step, 0, |
1757 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1758 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1759 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1760 | } |
1761 | ||
9d1f7ab2 MS |
1762 | /* |
1763 | * Find all threads for info threads command. | |
1764 | * Uses new thread protocol contributed by Cisco. | |
1765 | * Falls back and attempts to use the older method (above) | |
1766 | * if the target doesn't respond to the new method. | |
1767 | */ | |
1768 | ||
0f71a2f6 JM |
1769 | static void |
1770 | remote_threads_info (void) | |
1771 | { | |
d01949b6 AC |
1772 | struct remote_state *rs = get_remote_state (); |
1773 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1774 | char *bufp; |
0f71a2f6 JM |
1775 | int tid; |
1776 | ||
1777 | if (remote_desc == 0) /* paranoia */ | |
1778 | error ("Command can only be used when connected to the remote target."); | |
1779 | ||
9d1f7ab2 MS |
1780 | if (use_threadinfo_query) |
1781 | { | |
1782 | putpkt ("qfThreadInfo"); | |
1783 | bufp = buf; | |
d01949b6 | 1784 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 | 1785 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1786 | { |
9d1f7ab2 MS |
1787 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1788 | { | |
1789 | do | |
1790 | { | |
c273b20f JB |
1791 | /* Use strtoul here, so we'll correctly parse values |
1792 | whose highest bit is set. The protocol carries | |
1793 | them as a simple series of hex digits; in the | |
1794 | absence of a sign, strtol will see such values as | |
1795 | positive numbers out of range for signed 'long', | |
1796 | and return LONG_MAX to indicate an overflow. */ | |
1797 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1798 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1799 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1800 | } |
1801 | while (*bufp++ == ','); /* comma-separated list */ | |
1802 | putpkt ("qsThreadInfo"); | |
1803 | bufp = buf; | |
d01949b6 | 1804 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1805 | } |
1806 | return; /* done */ | |
1807 | } | |
1808 | } | |
1809 | ||
1810 | /* Else fall back to old method based on jmetzler protocol. */ | |
1811 | use_threadinfo_query = 0; | |
1812 | remote_find_new_threads (); | |
1813 | return; | |
1814 | } | |
1815 | ||
802188a7 | 1816 | /* |
9d1f7ab2 MS |
1817 | * Collect a descriptive string about the given thread. |
1818 | * The target may say anything it wants to about the thread | |
1819 | * (typically info about its blocked / runnable state, name, etc.). | |
1820 | * This string will appear in the info threads display. | |
802188a7 | 1821 | * |
9d1f7ab2 MS |
1822 | * Optional: targets are not required to implement this function. |
1823 | */ | |
1824 | ||
1825 | static char * | |
1826 | remote_threads_extra_info (struct thread_info *tp) | |
1827 | { | |
d01949b6 | 1828 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1829 | int result; |
1830 | int set; | |
1831 | threadref id; | |
1832 | struct gdb_ext_thread_info threadinfo; | |
1833 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1834 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1835 | int n = 0; /* position in display_buf */ |
1836 | ||
1837 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1838 | internal_error (__FILE__, __LINE__, |
1839 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1840 | |
1841 | if (use_threadextra_query) | |
1842 | { | |
39f77062 | 1843 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1844 | putpkt (bufp); |
d01949b6 | 1845 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1846 | if (bufp[0] != 0) |
1847 | { | |
30559e10 MS |
1848 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1849 | result = hex2bin (bufp, display_buf, n); | |
1850 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1851 | return display_buf; |
1852 | } | |
0f71a2f6 | 1853 | } |
9d1f7ab2 MS |
1854 | |
1855 | /* If the above query fails, fall back to the old method. */ | |
1856 | use_threadextra_query = 0; | |
1857 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1858 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1859 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1860 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1861 | if (threadinfo.active) | |
0f71a2f6 | 1862 | { |
9d1f7ab2 MS |
1863 | if (*threadinfo.shortname) |
1864 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1865 | if (*threadinfo.display) | |
1866 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1867 | if (*threadinfo.more_display) | |
1868 | n += sprintf(&display_buf[n], " Priority: %s", | |
1869 | threadinfo.more_display); | |
1870 | ||
1871 | if (n > 0) | |
c5aa993b | 1872 | { |
9d1f7ab2 MS |
1873 | /* for purely cosmetic reasons, clear up trailing commas */ |
1874 | if (',' == display_buf[n-1]) | |
1875 | display_buf[n-1] = ' '; | |
1876 | return display_buf; | |
c5aa993b | 1877 | } |
0f71a2f6 | 1878 | } |
9d1f7ab2 | 1879 | return NULL; |
0f71a2f6 | 1880 | } |
9d1f7ab2 | 1881 | |
c906108c | 1882 | \f |
c5aa993b | 1883 | |
c906108c SS |
1884 | /* Restart the remote side; this is an extended protocol operation. */ |
1885 | ||
1886 | static void | |
fba45db2 | 1887 | extended_remote_restart (void) |
c906108c | 1888 | { |
d01949b6 AC |
1889 | struct remote_state *rs = get_remote_state (); |
1890 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1891 | |
1892 | /* Send the restart command; for reasons I don't understand the | |
1893 | remote side really expects a number after the "R". */ | |
1894 | buf[0] = 'R'; | |
1895 | sprintf (&buf[1], "%x", 0); | |
1896 | putpkt (buf); | |
1897 | ||
1898 | /* Now query for status so this looks just like we restarted | |
1899 | gdbserver from scratch. */ | |
1900 | putpkt ("?"); | |
d01949b6 | 1901 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1902 | } |
1903 | \f | |
1904 | /* Clean up connection to a remote debugger. */ | |
1905 | ||
c906108c | 1906 | static void |
fba45db2 | 1907 | remote_close (int quitting) |
c906108c SS |
1908 | { |
1909 | if (remote_desc) | |
2cd58942 | 1910 | serial_close (remote_desc); |
c906108c SS |
1911 | remote_desc = NULL; |
1912 | } | |
1913 | ||
1914 | /* Query the remote side for the text, data and bss offsets. */ | |
1915 | ||
1916 | static void | |
fba45db2 | 1917 | get_offsets (void) |
c906108c | 1918 | { |
d01949b6 AC |
1919 | struct remote_state *rs = get_remote_state (); |
1920 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1921 | char *ptr; |
c906108c SS |
1922 | int lose; |
1923 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1924 | struct section_offsets *offs; | |
1925 | ||
1926 | putpkt ("qOffsets"); | |
1927 | ||
d01949b6 | 1928 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1929 | |
1930 | if (buf[0] == '\000') | |
1931 | return; /* Return silently. Stub doesn't support | |
1932 | this command. */ | |
1933 | if (buf[0] == 'E') | |
1934 | { | |
1935 | warning ("Remote failure reply: %s", buf); | |
1936 | return; | |
1937 | } | |
1938 | ||
1939 | /* Pick up each field in turn. This used to be done with scanf, but | |
1940 | scanf will make trouble if CORE_ADDR size doesn't match | |
1941 | conversion directives correctly. The following code will work | |
1942 | with any size of CORE_ADDR. */ | |
1943 | text_addr = data_addr = bss_addr = 0; | |
1944 | ptr = buf; | |
1945 | lose = 0; | |
1946 | ||
1947 | if (strncmp (ptr, "Text=", 5) == 0) | |
1948 | { | |
1949 | ptr += 5; | |
1950 | /* Don't use strtol, could lose on big values. */ | |
1951 | while (*ptr && *ptr != ';') | |
1952 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1953 | } | |
1954 | else | |
1955 | lose = 1; | |
1956 | ||
1957 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1958 | { | |
1959 | ptr += 6; | |
1960 | while (*ptr && *ptr != ';') | |
1961 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1962 | } | |
1963 | else | |
1964 | lose = 1; | |
1965 | ||
1966 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1967 | { | |
1968 | ptr += 5; | |
1969 | while (*ptr && *ptr != ';') | |
1970 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1971 | } | |
1972 | else | |
1973 | lose = 1; | |
1974 | ||
1975 | if (lose) | |
1976 | error ("Malformed response to offset query, %s", buf); | |
1977 | ||
1978 | if (symfile_objfile == NULL) | |
1979 | return; | |
1980 | ||
802188a7 | 1981 | offs = ((struct section_offsets *) |
a39a16c4 | 1982 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1983 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1984 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1985 | |
a4c8257b | 1986 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1987 | |
1988 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1989 | because that's what nlmconv does now. The real solution requires changes | |
1990 | to the stub and remote.c that I don't have time to do right now. */ | |
1991 | ||
a4c8257b EZ |
1992 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1993 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1994 | |
1995 | objfile_relocate (symfile_objfile, offs); | |
1996 | } | |
1997 | ||
1998 | /* Stub for catch_errors. */ | |
1999 | ||
0f71a2f6 | 2000 | static int |
36918e70 | 2001 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 JM |
2002 | { |
2003 | start_remote (); /* Initialize gdb process mechanisms */ | |
36918e70 AC |
2004 | /* NOTE: Return something >=0. A -ve value is reserved for |
2005 | catch_exceptions. */ | |
0f71a2f6 JM |
2006 | return 1; |
2007 | } | |
2008 | ||
c906108c | 2009 | static int |
36918e70 | 2010 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 2011 | { |
8edbea78 | 2012 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2013 | |
2014 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2015 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2016 | |
2017 | /* Let the stub know that we want it to return the thread. */ | |
2018 | set_thread (-1, 0); | |
2019 | ||
39f77062 | 2020 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2021 | |
2022 | get_offsets (); /* Get text, data & bss offsets */ | |
2023 | ||
2024 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2025 | immediate_quit--; |
c906108c | 2026 | |
36918e70 AC |
2027 | /* NOTE: See comment above in remote_start_remote_dummy(). This |
2028 | function returns something >=0. */ | |
2029 | return remote_start_remote_dummy (uiout, dummy); | |
c906108c SS |
2030 | } |
2031 | ||
2032 | /* Open a connection to a remote debugger. | |
2033 | NAME is the filename used for communication. */ | |
2034 | ||
2035 | static void | |
fba45db2 | 2036 | remote_open (char *name, int from_tty) |
c906108c | 2037 | { |
92d1e331 | 2038 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2039 | } |
2040 | ||
43ff13b4 JM |
2041 | /* Just like remote_open, but with asynchronous support. */ |
2042 | static void | |
fba45db2 | 2043 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2044 | { |
92d1e331 | 2045 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2046 | } |
2047 | ||
c906108c SS |
2048 | /* Open a connection to a remote debugger using the extended |
2049 | remote gdb protocol. NAME is the filename used for communication. */ | |
2050 | ||
2051 | static void | |
fba45db2 | 2052 | extended_remote_open (char *name, int from_tty) |
c906108c | 2053 | { |
92d1e331 DJ |
2054 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2055 | 0 /* async_p */); | |
c906108c SS |
2056 | } |
2057 | ||
43ff13b4 JM |
2058 | /* Just like extended_remote_open, but with asynchronous support. */ |
2059 | static void | |
fba45db2 | 2060 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2061 | { |
92d1e331 DJ |
2062 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2063 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2064 | } |
2065 | ||
c906108c SS |
2066 | /* Generic code for opening a connection to a remote target. */ |
2067 | ||
d471ea57 AC |
2068 | static void |
2069 | init_all_packet_configs (void) | |
2070 | { | |
2071 | int i; | |
2072 | update_packet_config (&remote_protocol_P); | |
b96ec7ac | 2073 | update_packet_config (&remote_protocol_p); |
dc8acb97 | 2074 | update_packet_config (&remote_protocol_qSymbol); |
506fb367 | 2075 | update_packet_config (&remote_protocol_vcont); |
d471ea57 AC |
2076 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2077 | update_packet_config (&remote_protocol_Z[i]); | |
2078 | /* Force remote_write_bytes to check whether target supports binary | |
2079 | downloading. */ | |
2080 | update_packet_config (&remote_protocol_binary_download); | |
802188a7 | 2081 | update_packet_config (&remote_protocol_qPart_auxv); |
d471ea57 AC |
2082 | } |
2083 | ||
dc8acb97 MS |
2084 | /* Symbol look-up. */ |
2085 | ||
2086 | static void | |
2087 | remote_check_symbols (struct objfile *objfile) | |
2088 | { | |
d01949b6 | 2089 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2090 | char *msg, *reply, *tmp; |
2091 | struct minimal_symbol *sym; | |
2092 | int end; | |
2093 | ||
2094 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2095 | return; | |
2096 | ||
d01949b6 AC |
2097 | msg = alloca (rs->remote_packet_size); |
2098 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2099 | |
2100 | /* Invite target to request symbol lookups. */ | |
2101 | ||
2102 | putpkt ("qSymbol::"); | |
d01949b6 | 2103 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2104 | packet_ok (reply, &remote_protocol_qSymbol); |
2105 | ||
2106 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2107 | { | |
2108 | tmp = &reply[8]; | |
2109 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2110 | msg[end] = '\0'; | |
2111 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2112 | if (sym == NULL) | |
2113 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2114 | else | |
802188a7 | 2115 | sprintf (msg, "qSymbol:%s:%s", |
dc8acb97 MS |
2116 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2117 | &reply[8]); | |
2118 | putpkt (msg); | |
d01949b6 | 2119 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2120 | } |
2121 | } | |
2122 | ||
9db8d71f DJ |
2123 | static struct serial * |
2124 | remote_serial_open (char *name) | |
2125 | { | |
2126 | static int udp_warning = 0; | |
2127 | ||
2128 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2129 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2130 | serial connection is reliable and not the serial connection promising | |
2131 | to be. */ | |
2132 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2133 | { | |
2134 | warning ("The remote protocol may be unreliable over UDP."); | |
2135 | warning ("Some events may be lost, rendering further debugging " | |
2136 | "impossible."); | |
2137 | udp_warning = 1; | |
2138 | } | |
2139 | ||
2140 | return serial_open (name); | |
2141 | } | |
2142 | ||
c906108c | 2143 | static void |
fba45db2 | 2144 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2145 | int extended_p, int async_p) |
c906108c | 2146 | { |
36918e70 | 2147 | int ex; |
d01949b6 | 2148 | struct remote_state *rs = get_remote_state (); |
c906108c | 2149 | if (name == 0) |
22e04375 AC |
2150 | error ("To open a remote debug connection, you need to specify what\n" |
2151 | "serial device is attached to the remote system\n" | |
2152 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2153 | |
6426a772 | 2154 | /* See FIXME above */ |
92d1e331 DJ |
2155 | if (!async_p) |
2156 | wait_forever_enabled_p = 1; | |
6426a772 | 2157 | |
00cac895 DJ |
2158 | reopen_exec_file (); |
2159 | reread_symbols (); | |
2160 | ||
c906108c SS |
2161 | target_preopen (from_tty); |
2162 | ||
2163 | unpush_target (target); | |
2164 | ||
9db8d71f | 2165 | remote_desc = remote_serial_open (name); |
c906108c SS |
2166 | if (!remote_desc) |
2167 | perror_with_name (name); | |
2168 | ||
2169 | if (baud_rate != -1) | |
2170 | { | |
2cd58942 | 2171 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2172 | { |
9b74d5d3 KB |
2173 | /* The requested speed could not be set. Error out to |
2174 | top level after closing remote_desc. Take care to | |
2175 | set remote_desc to NULL to avoid closing remote_desc | |
2176 | more than once. */ | |
2cd58942 | 2177 | serial_close (remote_desc); |
9b74d5d3 | 2178 | remote_desc = NULL; |
c906108c SS |
2179 | perror_with_name (name); |
2180 | } | |
2181 | } | |
2182 | ||
2cd58942 | 2183 | serial_raw (remote_desc); |
c906108c SS |
2184 | |
2185 | /* If there is something sitting in the buffer we might take it as a | |
2186 | response to a command, which would be bad. */ | |
2cd58942 | 2187 | serial_flush_input (remote_desc); |
c906108c SS |
2188 | |
2189 | if (from_tty) | |
2190 | { | |
2191 | puts_filtered ("Remote debugging using "); | |
2192 | puts_filtered (name); | |
2193 | puts_filtered ("\n"); | |
2194 | } | |
c5aa993b | 2195 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2196 | |
d471ea57 | 2197 | init_all_packet_configs (); |
802188a7 | 2198 | |
c5aa993b | 2199 | general_thread = -2; |
cce74817 | 2200 | continue_thread = -2; |
c906108c | 2201 | |
9d1f7ab2 MS |
2202 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2203 | use_threadinfo_query = 1; | |
2204 | use_threadextra_query = 1; | |
2205 | ||
c906108c SS |
2206 | /* Without this, some commands which require an active target (such |
2207 | as kill) won't work. This variable serves (at least) double duty | |
2208 | as both the pid of the target process (if it has such), and as a | |
2209 | flag indicating that a target is active. These functions should | |
2210 | be split out into seperate variables, especially since GDB will | |
2211 | someday have a notion of debugging several processes. */ | |
2212 | ||
39f77062 | 2213 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2214 | |
2215 | if (async_p) | |
2216 | { | |
2217 | /* With this target we start out by owning the terminal. */ | |
2218 | remote_async_terminal_ours_p = 1; | |
2219 | ||
2220 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2221 | assumed that the target is already ready and able to respond to | |
2222 | requests. Unfortunately remote_start_remote() eventually calls | |
2223 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2224 | around this. Eventually a mechanism that allows | |
2225 | wait_for_inferior() to expect/get timeouts will be | |
2226 | implemented. */ | |
2227 | wait_forever_enabled_p = 0; | |
2228 | } | |
2229 | ||
f78f6cf1 MS |
2230 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2231 | /* First delete any symbols previously loaded from shared libraries. */ | |
2232 | no_shared_libraries (NULL, 0); | |
2233 | #endif | |
2234 | ||
36918e70 | 2235 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2236 | target (we'd otherwise be in an inconsistent state) and then |
2237 | propogate the error on up the exception chain. This ensures that | |
2238 | the caller doesn't stumble along blindly assuming that the | |
2239 | function succeeded. The CLI doesn't have this problem but other | |
2240 | UI's, such as MI do. | |
36918e70 AC |
2241 | |
2242 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2243 | this function should return an error indication letting the | |
ce2826aa | 2244 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2245 | ``target remote'' is directly wired to this function making that |
2246 | impossible. On a positive note, the CLI side of this problem has | |
2247 | been fixed - the function set_cmd_context() makes it possible for | |
2248 | all the ``target ....'' commands to share a common callback | |
2249 | function. See cli-dump.c. */ | |
2250 | ex = catch_exceptions (uiout, | |
2251 | remote_start_remote, NULL, | |
2252 | "Couldn't establish connection to remote" | |
2253 | " target\n", | |
2254 | RETURN_MASK_ALL); | |
2255 | if (ex < 0) | |
c906108c SS |
2256 | { |
2257 | pop_target (); | |
92d1e331 DJ |
2258 | if (async_p) |
2259 | wait_forever_enabled_p = 1; | |
165b8e33 | 2260 | throw_exception (ex); |
c906108c SS |
2261 | } |
2262 | ||
92d1e331 DJ |
2263 | if (async_p) |
2264 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2265 | |
2266 | if (extended_p) | |
43ff13b4 | 2267 | { |
6240bebf | 2268 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2269 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2270 | putpkt ("!"); |
d01949b6 | 2271 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2272 | } |
f78f6cf1 | 2273 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
802188a7 RM |
2274 | /* FIXME: need a master target_open vector from which all |
2275 | remote_opens can be called, so that stuff like this can | |
6240bebf | 2276 | go there. Failing that, the following code must be copied |
802188a7 | 2277 | to the open function for any remote target that wants to |
6240bebf | 2278 | support svr4 shared libraries. */ |
f78f6cf1 MS |
2279 | |
2280 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2281 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2282 | { |
2283 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2284 | remote_check_symbols (symfile_objfile); | |
2285 | } | |
6240bebf | 2286 | #endif |
43ff13b4 JM |
2287 | } |
2288 | ||
c906108c SS |
2289 | /* This takes a program previously attached to and detaches it. After |
2290 | this is done, GDB can be used to debug some other program. We | |
2291 | better not have left any breakpoints in the target program or it'll | |
2292 | die when it hits one. */ | |
2293 | ||
2294 | static void | |
fba45db2 | 2295 | remote_detach (char *args, int from_tty) |
c906108c | 2296 | { |
d01949b6 AC |
2297 | struct remote_state *rs = get_remote_state (); |
2298 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2299 | |
2300 | if (args) | |
2301 | error ("Argument given to \"detach\" when remotely debugging."); | |
2302 | ||
2303 | /* Tell the remote target to detach. */ | |
2304 | strcpy (buf, "D"); | |
d01949b6 | 2305 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2306 | |
6ad8ae5c DJ |
2307 | /* Unregister the file descriptor from the event loop. */ |
2308 | if (target_is_async_p ()) | |
2309 | serial_async (remote_desc, NULL, 0); | |
2310 | ||
cca728d0 | 2311 | target_mourn_inferior (); |
c906108c SS |
2312 | if (from_tty) |
2313 | puts_filtered ("Ending remote debugging.\n"); | |
2314 | } | |
2315 | ||
6ad8ae5c DJ |
2316 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2317 | ||
43ff13b4 | 2318 | static void |
6ad8ae5c | 2319 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2320 | { |
d01949b6 AC |
2321 | struct remote_state *rs = get_remote_state (); |
2322 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2323 | |
2324 | if (args) | |
2325 | error ("Argument given to \"detach\" when remotely debugging."); | |
2326 | ||
43ff13b4 | 2327 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2328 | if (target_is_async_p ()) |
2cd58942 | 2329 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2330 | |
cca728d0 | 2331 | target_mourn_inferior (); |
43ff13b4 JM |
2332 | if (from_tty) |
2333 | puts_filtered ("Ending remote debugging.\n"); | |
2334 | } | |
2335 | ||
c906108c SS |
2336 | /* Convert hex digit A to a number. */ |
2337 | ||
30559e10 | 2338 | static int |
fba45db2 | 2339 | fromhex (int a) |
c906108c SS |
2340 | { |
2341 | if (a >= '0' && a <= '9') | |
2342 | return a - '0'; | |
2343 | else if (a >= 'a' && a <= 'f') | |
2344 | return a - 'a' + 10; | |
2345 | else if (a >= 'A' && a <= 'F') | |
2346 | return a - 'A' + 10; | |
c5aa993b | 2347 | else |
c906108c SS |
2348 | error ("Reply contains invalid hex digit %d", a); |
2349 | } | |
2350 | ||
30559e10 MS |
2351 | static int |
2352 | hex2bin (const char *hex, char *bin, int count) | |
2353 | { | |
2354 | int i; | |
2355 | ||
30559e10 MS |
2356 | for (i = 0; i < count; i++) |
2357 | { | |
2358 | if (hex[0] == 0 || hex[1] == 0) | |
2359 | { | |
2360 | /* Hex string is short, or of uneven length. | |
2361 | Return the count that has been converted so far. */ | |
2362 | return i; | |
2363 | } | |
2364 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2365 | hex += 2; | |
2366 | } | |
2367 | return i; | |
2368 | } | |
2369 | ||
c906108c SS |
2370 | /* Convert number NIB to a hex digit. */ |
2371 | ||
2372 | static int | |
fba45db2 | 2373 | tohex (int nib) |
c906108c SS |
2374 | { |
2375 | if (nib < 10) | |
c5aa993b | 2376 | return '0' + nib; |
c906108c | 2377 | else |
c5aa993b | 2378 | return 'a' + nib - 10; |
c906108c | 2379 | } |
30559e10 MS |
2380 | |
2381 | static int | |
234fa6d1 | 2382 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2383 | { |
2384 | int i; | |
2385 | /* May use a length, or a nul-terminated string as input. */ | |
2386 | if (count == 0) | |
2387 | count = strlen (bin); | |
2388 | ||
2389 | for (i = 0; i < count; i++) | |
2390 | { | |
2391 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2392 | *hex++ = tohex (*bin++ & 0xf); | |
2393 | } | |
2394 | *hex = 0; | |
2395 | return i; | |
2396 | } | |
c906108c | 2397 | \f |
506fb367 DJ |
2398 | /* Check for the availability of vCont. This function should also check |
2399 | the response. */ | |
c906108c SS |
2400 | |
2401 | static void | |
506fb367 | 2402 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2403 | { |
506fb367 DJ |
2404 | strcpy (buf, "vCont?"); |
2405 | putpkt (buf); | |
2406 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2407 | |
506fb367 DJ |
2408 | /* Make sure that the features we assume are supported. */ |
2409 | if (strncmp (buf, "vCont", 5) == 0) | |
2410 | { | |
2411 | char *p = &buf[5]; | |
2412 | int support_s, support_S, support_c, support_C; | |
2413 | ||
2414 | support_s = 0; | |
2415 | support_S = 0; | |
2416 | support_c = 0; | |
2417 | support_C = 0; | |
2418 | while (p && *p == ';') | |
2419 | { | |
2420 | p++; | |
2421 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2422 | support_s = 1; | |
2423 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2424 | support_S = 1; | |
2425 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2426 | support_c = 1; | |
2427 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2428 | support_C = 1; | |
2429 | ||
2430 | p = strchr (p, ';'); | |
2431 | } | |
c906108c | 2432 | |
506fb367 DJ |
2433 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2434 | BUF will make packet_ok disable the packet. */ | |
2435 | if (!support_s || !support_S || !support_c || !support_C) | |
2436 | buf[0] = 0; | |
2437 | } | |
c906108c | 2438 | |
506fb367 DJ |
2439 | packet_ok (buf, &remote_protocol_vcont); |
2440 | } | |
c906108c | 2441 | |
506fb367 DJ |
2442 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2443 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2444 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2445 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2446 | signalled is given in the global INFERIOR_PTID. This function returns | |
2447 | non-zero iff it resumes the inferior. | |
44eaed12 | 2448 | |
506fb367 DJ |
2449 | This function issues a strict subset of all possible vCont commands at the |
2450 | moment. */ | |
44eaed12 | 2451 | |
506fb367 DJ |
2452 | static int |
2453 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2454 | { | |
2455 | struct remote_state *rs = get_remote_state (); | |
2456 | int pid = PIDGET (ptid); | |
2963ee1d | 2457 | char *buf = NULL, *outbuf; |
506fb367 | 2458 | struct cleanup *old_cleanup; |
44eaed12 | 2459 | |
506fb367 DJ |
2460 | buf = xmalloc (rs->remote_packet_size); |
2461 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2462 | |
506fb367 DJ |
2463 | if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN) |
2464 | remote_vcont_probe (rs, buf); | |
44eaed12 | 2465 | |
506fb367 DJ |
2466 | if (remote_protocol_vcont.support == PACKET_DISABLE) |
2467 | { | |
2468 | do_cleanups (old_cleanup); | |
2469 | return 0; | |
44eaed12 C |
2470 | } |
2471 | ||
506fb367 DJ |
2472 | /* If we could generate a wider range of packets, we'd have to worry |
2473 | about overflowing BUF. Should there be a generic | |
2474 | "multi-part-packet" packet? */ | |
2475 | ||
2476 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2477 | { |
506fb367 DJ |
2478 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2479 | don't have any PID numbers the inferior will understand. Make sure | |
2480 | to only send forms that do not specify a PID. */ | |
2481 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2482 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2483 | else if (step) |
2963ee1d | 2484 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2485 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2486 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2487 | else |
2963ee1d | 2488 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2489 | } |
2490 | else if (pid == -1) | |
2491 | { | |
2492 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2493 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2494 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2495 | PIDGET (inferior_ptid)); | |
506fb367 | 2496 | else if (step) |
2963ee1d | 2497 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2498 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2499 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2500 | PIDGET (inferior_ptid)); | |
506fb367 | 2501 | else |
2963ee1d | 2502 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2503 | } |
2504 | else | |
506fb367 DJ |
2505 | { |
2506 | /* Scheduler locking; resume only PTID. */ | |
2507 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2508 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2509 | else if (step) |
2963ee1d | 2510 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2511 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2512 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2513 | else |
2963ee1d | 2514 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2515 | } |
c906108c | 2516 | |
2963ee1d DJ |
2517 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
2518 | make_cleanup (xfree, outbuf); | |
2519 | ||
2520 | putpkt (outbuf); | |
506fb367 DJ |
2521 | |
2522 | do_cleanups (old_cleanup); | |
2523 | ||
2524 | return 1; | |
c906108c | 2525 | } |
43ff13b4 | 2526 | |
506fb367 DJ |
2527 | /* Tell the remote machine to resume. */ |
2528 | ||
2529 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2530 | ||
2531 | static int last_sent_step; | |
2532 | ||
43ff13b4 | 2533 | static void |
506fb367 | 2534 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2535 | { |
d01949b6 AC |
2536 | struct remote_state *rs = get_remote_state (); |
2537 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2538 | int pid = PIDGET (ptid); |
44eaed12 | 2539 | char *p; |
43ff13b4 | 2540 | |
43ff13b4 JM |
2541 | last_sent_signal = siggnal; |
2542 | last_sent_step = step; | |
2543 | ||
2544 | /* A hook for when we need to do something at the last moment before | |
2545 | resumption. */ | |
9a4105ab AC |
2546 | if (deprecated_target_resume_hook) |
2547 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2548 | |
506fb367 DJ |
2549 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2550 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2551 | return; | |
2552 | ||
2553 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2554 | if (pid == -1) | |
2555 | set_thread (0, 0); /* run any thread */ | |
2556 | else | |
2557 | set_thread (pid, 0); /* run this thread */ | |
2558 | ||
43ff13b4 JM |
2559 | if (siggnal != TARGET_SIGNAL_0) |
2560 | { | |
2561 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2562 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2563 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2564 | buf[3] = '\0'; |
2565 | } | |
2566 | else | |
c5aa993b | 2567 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2568 | |
44eaed12 | 2569 | putpkt (buf); |
506fb367 DJ |
2570 | } |
2571 | ||
2572 | /* Same as remote_resume, but with async support. */ | |
2573 | static void | |
2574 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2575 | { | |
2576 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2577 | |
2acceee2 JM |
2578 | /* We are about to start executing the inferior, let's register it |
2579 | with the event loop. NOTE: this is the one place where all the | |
2580 | execution commands end up. We could alternatively do this in each | |
2581 | of the execution commands in infcmd.c.*/ | |
2582 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2583 | into infcmd.c in order to allow inferior function calls to work | |
2584 | NOT asynchronously. */ | |
362646f5 | 2585 | if (target_can_async_p ()) |
2acceee2 JM |
2586 | target_async (inferior_event_handler, 0); |
2587 | /* Tell the world that the target is now executing. */ | |
2588 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2589 | this? Instead, should the client of target just assume (for | |
2590 | async targets) that the target is going to start executing? Is | |
2591 | this information already found in the continuation block? */ | |
ed9a39eb | 2592 | if (target_is_async_p ()) |
2acceee2 | 2593 | target_executing = 1; |
43ff13b4 | 2594 | } |
c906108c | 2595 | \f |
43ff13b4 JM |
2596 | |
2597 | /* Set up the signal handler for SIGINT, while the target is | |
2598 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2599 | static void | |
fba45db2 | 2600 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2601 | { |
c5aa993b | 2602 | sigint_remote_token = |
43ff13b4 JM |
2603 | create_async_signal_handler (async_remote_interrupt, NULL); |
2604 | signal (SIGINT, handle_remote_sigint); | |
2605 | } | |
2606 | ||
2607 | /* Signal handler for SIGINT, while the target is executing. */ | |
2608 | static void | |
fba45db2 | 2609 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2610 | { |
2611 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2612 | sigint_remote_twice_token = |
43ff13b4 JM |
2613 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2614 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2615 | } | |
2616 | ||
2617 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2618 | sent once. It will take effect the second time that the user sends | |
2619 | a ^C. */ | |
2620 | static void | |
fba45db2 | 2621 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2622 | { |
2623 | signal (sig, handle_sigint); | |
c5aa993b | 2624 | sigint_remote_twice_token = |
2df3850c | 2625 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2626 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2627 | } | |
2628 | ||
6426a772 | 2629 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2630 | to a ^C. */ |
c5aa993b | 2631 | static void |
fba45db2 | 2632 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2633 | { |
2634 | if (remote_debug) | |
2635 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2636 | ||
2637 | target_stop (); | |
2638 | } | |
2639 | ||
2640 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2641 | up on the target alltogether. */ | |
2df3850c | 2642 | void |
fba45db2 | 2643 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2644 | { |
2df3850c JM |
2645 | if (remote_debug) |
2646 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2647 | /* Do something only if the target was not killed by the previous |
2648 | cntl-C. */ | |
2649 | if (target_executing) | |
2650 | { | |
2651 | interrupt_query (); | |
2652 | signal (SIGINT, handle_remote_sigint); | |
2653 | } | |
43ff13b4 JM |
2654 | } |
2655 | ||
2656 | /* Reinstall the usual SIGINT handlers, after the target has | |
2657 | stopped. */ | |
6426a772 JM |
2658 | static void |
2659 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2660 | { |
2661 | signal (SIGINT, handle_sigint); | |
2662 | if (sigint_remote_twice_token) | |
c2c6d25f | 2663 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2664 | if (sigint_remote_token) |
c2c6d25f | 2665 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2666 | } |
2667 | ||
c906108c SS |
2668 | /* Send ^C to target to halt it. Target will respond, and send us a |
2669 | packet. */ | |
507f3c78 | 2670 | static void (*ofunc) (int); |
c906108c | 2671 | |
7a292a7a SS |
2672 | /* The command line interface's stop routine. This function is installed |
2673 | as a signal handler for SIGINT. The first time a user requests a | |
2674 | stop, we call remote_stop to send a break or ^C. If there is no | |
2675 | response from the target (it didn't stop when the user requested it), | |
2676 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2677 | static void |
fba45db2 | 2678 | remote_interrupt (int signo) |
c906108c | 2679 | { |
7a292a7a SS |
2680 | /* If this doesn't work, try more severe steps. */ |
2681 | signal (signo, remote_interrupt_twice); | |
2682 | ||
2683 | if (remote_debug) | |
0f71a2f6 | 2684 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2685 | |
2686 | target_stop (); | |
2687 | } | |
2688 | ||
2689 | /* The user typed ^C twice. */ | |
2690 | ||
2691 | static void | |
fba45db2 | 2692 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2693 | { |
2694 | signal (signo, ofunc); | |
2695 | interrupt_query (); | |
c906108c SS |
2696 | signal (signo, remote_interrupt); |
2697 | } | |
7a292a7a SS |
2698 | |
2699 | /* This is the generic stop called via the target vector. When a target | |
2700 | interrupt is requested, either by the command line or the GUI, we | |
2701 | will eventually end up here. */ | |
c906108c | 2702 | static void |
fba45db2 | 2703 | remote_stop (void) |
c906108c | 2704 | { |
7a292a7a SS |
2705 | /* Send a break or a ^C, depending on user preference. */ |
2706 | if (remote_debug) | |
0f71a2f6 | 2707 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2708 | |
7a292a7a | 2709 | if (remote_break) |
2cd58942 | 2710 | serial_send_break (remote_desc); |
c906108c | 2711 | else |
2cd58942 | 2712 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2713 | } |
2714 | ||
2715 | /* Ask the user what to do when an interrupt is received. */ | |
2716 | ||
2717 | static void | |
fba45db2 | 2718 | interrupt_query (void) |
c906108c SS |
2719 | { |
2720 | target_terminal_ours (); | |
2721 | ||
2722 | if (query ("Interrupted while waiting for the program.\n\ | |
2723 | Give up (and stop debugging it)? ")) | |
2724 | { | |
2725 | target_mourn_inferior (); | |
b5a2688f | 2726 | throw_exception (RETURN_QUIT); |
c906108c SS |
2727 | } |
2728 | ||
2729 | target_terminal_inferior (); | |
2730 | } | |
2731 | ||
6426a772 JM |
2732 | /* Enable/disable target terminal ownership. Most targets can use |
2733 | terminal groups to control terminal ownership. Remote targets are | |
2734 | different in that explicit transfer of ownership to/from GDB/target | |
2735 | is required. */ | |
2736 | ||
2737 | static void | |
2738 | remote_async_terminal_inferior (void) | |
2739 | { | |
2740 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2741 | sync_execution here. This function should only be called when | |
2742 | GDB is resuming the inferior in the forground. A background | |
2743 | resume (``run&'') should leave GDB in control of the terminal and | |
2744 | consequently should not call this code. */ | |
2745 | if (!sync_execution) | |
2746 | return; | |
2747 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2748 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2749 | to an asynchronous target with a synchronous command calls this | |
2750 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2751 | stops trying to transfer the terminal to the target when it | |
2752 | shouldn't this guard can go away. */ | |
2753 | if (!remote_async_terminal_ours_p) | |
2754 | return; | |
2755 | delete_file_handler (input_fd); | |
2756 | remote_async_terminal_ours_p = 0; | |
2757 | initialize_sigint_signal_handler (); | |
2758 | /* NOTE: At this point we could also register our selves as the | |
2759 | recipient of all input. Any characters typed could then be | |
2760 | passed on down to the target. */ | |
2761 | } | |
2762 | ||
2763 | static void | |
2764 | remote_async_terminal_ours (void) | |
2765 | { | |
2766 | /* See FIXME in remote_async_terminal_inferior. */ | |
2767 | if (!sync_execution) | |
2768 | return; | |
2769 | /* See FIXME in remote_async_terminal_inferior. */ | |
2770 | if (remote_async_terminal_ours_p) | |
2771 | return; | |
2772 | cleanup_sigint_signal_handler (NULL); | |
2773 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2774 | remote_async_terminal_ours_p = 1; | |
2775 | } | |
2776 | ||
c906108c SS |
2777 | /* If nonzero, ignore the next kill. */ |
2778 | ||
2779 | int kill_kludge; | |
2780 | ||
2781 | void | |
917317f4 | 2782 | remote_console_output (char *msg) |
c906108c SS |
2783 | { |
2784 | char *p; | |
2785 | ||
c5aa993b | 2786 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2787 | { |
2788 | char tb[2]; | |
2789 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2790 | tb[0] = c; | |
2791 | tb[1] = 0; | |
43ff13b4 | 2792 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2793 | } |
917317f4 | 2794 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2795 | } |
2796 | ||
0f71a2f6 JM |
2797 | /* Wait until the remote machine stops, then return, |
2798 | storing status in STATUS just as `wait' would. | |
802188a7 | 2799 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2800 | remote OS, is the thread-id. */ |
c906108c | 2801 | |
39f77062 KB |
2802 | static ptid_t |
2803 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2804 | { |
d01949b6 AC |
2805 | struct remote_state *rs = get_remote_state (); |
2806 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2807 | ULONGEST thread_num = -1; |
3c3bea1c | 2808 | ULONGEST addr; |
c906108c SS |
2809 | |
2810 | status->kind = TARGET_WAITKIND_EXITED; | |
2811 | status->value.integer = 0; | |
2812 | ||
2813 | while (1) | |
2814 | { | |
2815 | unsigned char *p; | |
2816 | ||
c906108c | 2817 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2818 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2819 | signal (SIGINT, ofunc); |
2820 | ||
2821 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2822 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2823 | if (deprecated_target_wait_loop_hook) |
2824 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2825 | |
3c3bea1c GS |
2826 | remote_stopped_by_watchpoint_p = 0; |
2827 | ||
c906108c SS |
2828 | switch (buf[0]) |
2829 | { | |
2830 | case 'E': /* Error of some sort */ | |
2831 | warning ("Remote failure reply: %s", buf); | |
2832 | continue; | |
449092f6 CV |
2833 | case 'F': /* File-I/O request */ |
2834 | remote_fileio_request (buf); | |
2835 | continue; | |
c906108c SS |
2836 | case 'T': /* Status with PC, SP, FP, ... */ |
2837 | { | |
2838 | int i; | |
d9d9c31f | 2839 | char regs[MAX_REGISTER_SIZE]; |
c906108c SS |
2840 | |
2841 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2842 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2843 | ss = signal number |
2844 | n... = register number | |
2845 | r... = register contents | |
2846 | */ | |
c906108c SS |
2847 | p = &buf[3]; /* after Txx */ |
2848 | ||
2849 | while (*p) | |
2850 | { | |
2851 | unsigned char *p1; | |
2852 | char *p_temp; | |
97345198 | 2853 | int fieldsize; |
3c3bea1c GS |
2854 | LONGEST pnum = 0; |
2855 | ||
2856 | /* If the packet contains a register number save it in pnum | |
802188a7 | 2857 | and set p1 to point to the character following it. |
3c3bea1c | 2858 | Otherwise p1 points to p. */ |
c906108c | 2859 | |
3c3bea1c GS |
2860 | /* If this packet is an awatch packet, don't parse the 'a' |
2861 | as a register number. */ | |
2862 | ||
2863 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2864 | { | |
2865 | /* Read the ``P'' register number. */ | |
2866 | pnum = strtol (p, &p_temp, 16); | |
2867 | p1 = (unsigned char *) p_temp; | |
2868 | } | |
802188a7 | 2869 | else |
3c3bea1c | 2870 | p1 = p; |
c906108c | 2871 | |
c5aa993b | 2872 | if (p1 == p) /* No register number present here */ |
c906108c | 2873 | { |
3c3bea1c | 2874 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c SS |
2875 | if (p1 == NULL) |
2876 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2877 | Packet: '%s'\n", | |
2878 | p, buf); | |
3c3bea1c | 2879 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2880 | { |
2881 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2882 | record_currthread (thread_num); | |
2883 | p = (unsigned char *) p_temp; | |
2884 | } | |
3c3bea1c GS |
2885 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2886 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2887 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2888 | { | |
2889 | remote_stopped_by_watchpoint_p = 1; | |
2890 | p = unpack_varlen_hex (++p1, &addr); | |
2891 | remote_watch_data_address = (CORE_ADDR)addr; | |
2892 | } | |
2893 | else | |
2894 | { | |
2895 | /* Silently skip unknown optional info. */ | |
2896 | p_temp = strchr (p1 + 1, ';'); | |
2897 | if (p_temp) | |
2898 | p = (unsigned char *) p_temp; | |
2899 | } | |
c906108c SS |
2900 | } |
2901 | else | |
2902 | { | |
ad10f812 | 2903 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2904 | p = p1; |
2905 | ||
2906 | if (*p++ != ':') | |
3fcb8548 AC |
2907 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
2908 | p, buf); | |
c906108c | 2909 | |
ad10f812 | 2910 | if (reg == NULL) |
3fcb8548 AC |
2911 | error ("Remote sent bad register number %s: %s\nPacket: '%s'\n", |
2912 | phex_nz (pnum, 0), p, buf); | |
c906108c | 2913 | |
3acba339 | 2914 | fieldsize = hex2bin (p, regs, register_size (current_gdbarch, reg->regnum)); |
97345198 | 2915 | p += 2 * fieldsize; |
3acba339 | 2916 | if (fieldsize < register_size (current_gdbarch, reg->regnum)) |
30559e10 | 2917 | warning ("Remote reply is too short: %s", buf); |
23a6d369 | 2918 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
c906108c SS |
2919 | } |
2920 | ||
2921 | if (*p++ != ';') | |
3fcb8548 | 2922 | error ("Remote register badly formatted: %s\nhere: %s", buf, p); |
c906108c SS |
2923 | } |
2924 | } | |
2925 | /* fall through */ | |
2926 | case 'S': /* Old style status, just signal only */ | |
2927 | status->kind = TARGET_WAITKIND_STOPPED; | |
2928 | status->value.sig = (enum target_signal) | |
2929 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2930 | ||
0f71a2f6 JM |
2931 | if (buf[3] == 'p') |
2932 | { | |
0f71a2f6 JM |
2933 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2934 | record_currthread (thread_num); | |
2935 | } | |
c906108c SS |
2936 | goto got_status; |
2937 | case 'W': /* Target exited */ | |
2938 | { | |
2939 | /* The remote process exited. */ | |
2940 | status->kind = TARGET_WAITKIND_EXITED; | |
2941 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2942 | goto got_status; | |
2943 | } | |
2944 | case 'X': | |
2945 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2946 | status->value.sig = (enum target_signal) | |
2947 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2948 | kill_kludge = 1; | |
2949 | ||
2950 | goto got_status; | |
2951 | case 'O': /* Console output */ | |
2952 | remote_console_output (buf + 1); | |
2953 | continue; | |
2954 | case '\0': | |
2955 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2956 | { | |
2957 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2958 | the remote system doesn't support it. */ |
c906108c SS |
2959 | target_terminal_ours_for_output (); |
2960 | printf_filtered | |
2961 | ("Can't send signals to this remote system. %s not sent.\n", | |
2962 | target_signal_to_name (last_sent_signal)); | |
2963 | last_sent_signal = TARGET_SIGNAL_0; | |
2964 | target_terminal_inferior (); | |
2965 | ||
2966 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2967 | putpkt ((char *) buf); | |
2968 | continue; | |
2969 | } | |
2970 | /* else fallthrough */ | |
2971 | default: | |
2972 | warning ("Invalid remote reply: %s", buf); | |
2973 | continue; | |
2974 | } | |
2975 | } | |
c5aa993b | 2976 | got_status: |
c906108c SS |
2977 | if (thread_num != -1) |
2978 | { | |
39f77062 | 2979 | return pid_to_ptid (thread_num); |
c906108c | 2980 | } |
39f77062 | 2981 | return inferior_ptid; |
c906108c SS |
2982 | } |
2983 | ||
43ff13b4 | 2984 | /* Async version of remote_wait. */ |
39f77062 KB |
2985 | static ptid_t |
2986 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 2987 | { |
d01949b6 AC |
2988 | struct remote_state *rs = get_remote_state (); |
2989 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2990 | ULONGEST thread_num = -1; |
3c3bea1c | 2991 | ULONGEST addr; |
43ff13b4 JM |
2992 | |
2993 | status->kind = TARGET_WAITKIND_EXITED; | |
2994 | status->value.integer = 0; | |
2995 | ||
3c3bea1c GS |
2996 | remote_stopped_by_watchpoint_p = 0; |
2997 | ||
43ff13b4 JM |
2998 | while (1) |
2999 | { | |
3000 | unsigned char *p; | |
c5aa993b | 3001 | |
ed9a39eb | 3002 | if (!target_is_async_p ()) |
43ff13b4 | 3003 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3004 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3005 | _never_ wait for ever -> test on target_is_async_p(). | |
3006 | However, before we do that we need to ensure that the caller | |
3007 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 3008 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3009 | if (!target_is_async_p ()) |
43ff13b4 JM |
3010 | signal (SIGINT, ofunc); |
3011 | ||
3012 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3013 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3014 | if (deprecated_target_wait_loop_hook) |
3015 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3016 | |
3017 | switch (buf[0]) | |
3018 | { | |
3019 | case 'E': /* Error of some sort */ | |
3020 | warning ("Remote failure reply: %s", buf); | |
3021 | continue; | |
449092f6 CV |
3022 | case 'F': /* File-I/O request */ |
3023 | remote_fileio_request (buf); | |
3024 | continue; | |
43ff13b4 JM |
3025 | case 'T': /* Status with PC, SP, FP, ... */ |
3026 | { | |
3027 | int i; | |
d9d9c31f | 3028 | char regs[MAX_REGISTER_SIZE]; |
43ff13b4 JM |
3029 | |
3030 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3031 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3032 | ss = signal number |
3033 | n... = register number | |
3034 | r... = register contents | |
3035 | */ | |
43ff13b4 JM |
3036 | p = &buf[3]; /* after Txx */ |
3037 | ||
3038 | while (*p) | |
3039 | { | |
3040 | unsigned char *p1; | |
3041 | char *p_temp; | |
6c3f2dbf | 3042 | int fieldsize; |
3c3bea1c | 3043 | long pnum = 0; |
43ff13b4 | 3044 | |
3c3bea1c | 3045 | /* If the packet contains a register number, save it in pnum |
802188a7 | 3046 | and set p1 to point to the character following it. |
3c3bea1c GS |
3047 | Otherwise p1 points to p. */ |
3048 | ||
3049 | /* If this packet is an awatch packet, don't parse the 'a' | |
3050 | as a register number. */ | |
802188a7 | 3051 | |
3c3bea1c GS |
3052 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3053 | { | |
3054 | /* Read the register number. */ | |
3055 | pnum = strtol (p, &p_temp, 16); | |
3056 | p1 = (unsigned char *) p_temp; | |
3057 | } | |
802188a7 | 3058 | else |
3c3bea1c | 3059 | p1 = p; |
43ff13b4 | 3060 | |
c5aa993b | 3061 | if (p1 == p) /* No register number present here */ |
43ff13b4 | 3062 | { |
3c3bea1c | 3063 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 | 3064 | if (p1 == NULL) |
3fcb8548 AC |
3065 | error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n", |
3066 | p, buf); | |
3c3bea1c | 3067 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3068 | { |
3069 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3070 | record_currthread (thread_num); | |
3071 | p = (unsigned char *) p_temp; | |
3072 | } | |
3c3bea1c GS |
3073 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3074 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3075 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3076 | { | |
3077 | remote_stopped_by_watchpoint_p = 1; | |
3078 | p = unpack_varlen_hex (++p1, &addr); | |
3079 | remote_watch_data_address = (CORE_ADDR)addr; | |
3080 | } | |
3081 | else | |
3082 | { | |
3083 | /* Silently skip unknown optional info. */ | |
3084 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3085 | if (p_temp) | |
3086 | p = p_temp; | |
3087 | } | |
43ff13b4 | 3088 | } |
802188a7 | 3089 | |
43ff13b4 JM |
3090 | else |
3091 | { | |
ad10f812 | 3092 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3093 | p = p1; |
43ff13b4 | 3094 | if (*p++ != ':') |
3fcb8548 AC |
3095 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
3096 | p, buf); | |
43ff13b4 | 3097 | |
ad10f812 | 3098 | if (reg == NULL) |
3fcb8548 AC |
3099 | error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n", |
3100 | pnum, p, buf); | |
43ff13b4 | 3101 | |
3acba339 | 3102 | fieldsize = hex2bin (p, regs, register_size (current_gdbarch, reg->regnum)); |
6c3f2dbf | 3103 | p += 2 * fieldsize; |
3acba339 | 3104 | if (fieldsize < register_size (current_gdbarch, reg->regnum)) |
30559e10 | 3105 | warning ("Remote reply is too short: %s", buf); |
23a6d369 | 3106 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3107 | } |
3108 | ||
3109 | if (*p++ != ';') | |
0a2cfde4 AC |
3110 | error ("Remote register badly formatted: %s\nhere: %s", |
3111 | buf, p); | |
43ff13b4 JM |
3112 | } |
3113 | } | |
3114 | /* fall through */ | |
3115 | case 'S': /* Old style status, just signal only */ | |
3116 | status->kind = TARGET_WAITKIND_STOPPED; | |
3117 | status->value.sig = (enum target_signal) | |
3118 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3119 | ||
3120 | if (buf[3] == 'p') | |
3121 | { | |
43ff13b4 JM |
3122 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3123 | record_currthread (thread_num); | |
3124 | } | |
43ff13b4 | 3125 | goto got_status; |
43ff13b4 JM |
3126 | case 'W': /* Target exited */ |
3127 | { | |
3128 | /* The remote process exited. */ | |
3129 | status->kind = TARGET_WAITKIND_EXITED; | |
3130 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3131 | goto got_status; | |
3132 | } | |
3133 | case 'X': | |
3134 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3135 | status->value.sig = (enum target_signal) | |
3136 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3137 | kill_kludge = 1; | |
3138 | ||
3139 | goto got_status; | |
3140 | case 'O': /* Console output */ | |
3141 | remote_console_output (buf + 1); | |
c4093a6a JM |
3142 | /* Return immediately to the event loop. The event loop will |
3143 | still be waiting on the inferior afterwards. */ | |
3144 | status->kind = TARGET_WAITKIND_IGNORE; | |
3145 | goto got_status; | |
43ff13b4 JM |
3146 | case '\0': |
3147 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3148 | { | |
3149 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3150 | the remote system doesn't support it. */ |
43ff13b4 JM |
3151 | target_terminal_ours_for_output (); |
3152 | printf_filtered | |
3153 | ("Can't send signals to this remote system. %s not sent.\n", | |
3154 | target_signal_to_name (last_sent_signal)); | |
3155 | last_sent_signal = TARGET_SIGNAL_0; | |
3156 | target_terminal_inferior (); | |
3157 | ||
3158 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3159 | putpkt ((char *) buf); | |
3160 | continue; | |
3161 | } | |
3162 | /* else fallthrough */ | |
3163 | default: | |
3164 | warning ("Invalid remote reply: %s", buf); | |
3165 | continue; | |
3166 | } | |
3167 | } | |
c5aa993b | 3168 | got_status: |
43ff13b4 JM |
3169 | if (thread_num != -1) |
3170 | { | |
39f77062 | 3171 | return pid_to_ptid (thread_num); |
43ff13b4 | 3172 | } |
39f77062 | 3173 | return inferior_ptid; |
43ff13b4 JM |
3174 | } |
3175 | ||
c906108c SS |
3176 | /* Number of bytes of registers this stub implements. */ |
3177 | ||
3178 | static int register_bytes_found; | |
3179 | ||
3180 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3181 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3182 | |
b96ec7ac AC |
3183 | static int |
3184 | fetch_register_using_p (int regnum) | |
3185 | { | |
3186 | struct remote_state *rs = get_remote_state (); | |
3187 | char *buf = alloca (rs->remote_packet_size), *p; | |
3188 | char regp[MAX_REGISTER_SIZE]; | |
3189 | int i; | |
3190 | ||
fcad0fa4 JB |
3191 | p = buf; |
3192 | *p++ = 'p'; | |
3193 | p += hexnumstr (p, regnum); | |
3194 | *p++ = '\0'; | |
b96ec7ac | 3195 | remote_send (buf, rs->remote_packet_size); |
3f9a994c JB |
3196 | |
3197 | /* If the stub didn't recognize the packet, or if we got an error, | |
3198 | tell our caller. */ | |
3199 | if (buf[0] == '\0' || buf[0] == 'E') | |
3200 | return 0; | |
3201 | ||
3202 | /* If this register is unfetchable, tell the regcache. */ | |
3203 | if (buf[0] == 'x') | |
8480adf2 | 3204 | { |
3f9a994c JB |
3205 | regcache_raw_supply (current_regcache, regnum, NULL); |
3206 | set_register_cached (regnum, -1); | |
8480adf2 | 3207 | return 1; |
b96ec7ac | 3208 | } |
b96ec7ac | 3209 | |
3f9a994c JB |
3210 | /* Otherwise, parse and supply the value. */ |
3211 | p = buf; | |
3212 | i = 0; | |
3213 | while (p[0] != 0) | |
3214 | { | |
3215 | if (p[1] == 0) | |
3216 | { | |
3217 | error("fetch_register_using_p: early buf termination"); | |
3218 | return 0; | |
3219 | } | |
3220 | ||
3221 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3222 | p += 2; | |
3223 | } | |
3224 | regcache_raw_supply (current_regcache, regnum, regp); | |
3225 | return 1; | |
b96ec7ac AC |
3226 | } |
3227 | ||
c906108c | 3228 | static void |
ad10f812 | 3229 | remote_fetch_registers (int regnum) |
c906108c | 3230 | { |
d01949b6 AC |
3231 | struct remote_state *rs = get_remote_state (); |
3232 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3233 | int i; |
3234 | char *p; | |
ad10f812 | 3235 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3236 | |
39f77062 | 3237 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3238 | |
b323314b AC |
3239 | if (regnum >= 0) |
3240 | { | |
3241 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3242 | gdb_assert (reg != NULL); | |
3243 | if (!reg->in_g_packet) | |
3244 | internal_error (__FILE__, __LINE__, | |
3245 | "Attempt to fetch a non G-packet register when this " | |
3246 | "remote.c does not support the p-packet."); | |
3247 | } | |
b96ec7ac AC |
3248 | switch (remote_protocol_p.support) |
3249 | { | |
3250 | case PACKET_DISABLE: | |
3251 | break; | |
3252 | case PACKET_ENABLE: | |
3253 | if (fetch_register_using_p (regnum)) | |
3254 | return; | |
3255 | else | |
3256 | error ("Protocol error: p packet not recognized by stub"); | |
3257 | case PACKET_SUPPORT_UNKNOWN: | |
3258 | if (fetch_register_using_p (regnum)) | |
3259 | { | |
3260 | /* The stub recognized the 'p' packet. Remember this. */ | |
3261 | remote_protocol_p.support = PACKET_ENABLE; | |
3262 | return; | |
3263 | } | |
3264 | else | |
3265 | { | |
3266 | /* The stub does not support the 'P' packet. Use 'G' | |
3267 | instead, and don't try using 'P' in the future (it | |
3268 | will just waste our time). */ | |
3269 | remote_protocol_p.support = PACKET_DISABLE; | |
3270 | break; | |
3271 | } | |
3272 | } | |
b323314b | 3273 | |
c906108c | 3274 | sprintf (buf, "g"); |
d01949b6 | 3275 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3276 | |
11cf8741 JM |
3277 | /* Save the size of the packet sent to us by the target. Its used |
3278 | as a heuristic when determining the max size of packets that the | |
3279 | target can safely receive. */ | |
d01949b6 AC |
3280 | if ((rs->actual_register_packet_size) == 0) |
3281 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3282 | |
3283 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3284 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3285 | |
3286 | /* We can get out of synch in various cases. If the first character | |
3287 | in the buffer is not a hex character, assume that has happened | |
3288 | and try to fetch another packet to read. */ | |
3289 | while ((buf[0] < '0' || buf[0] > '9') | |
3290 | && (buf[0] < 'a' || buf[0] > 'f') | |
3291 | && buf[0] != 'x') /* New: unavailable register value */ | |
3292 | { | |
3293 | if (remote_debug) | |
0f71a2f6 JM |
3294 | fprintf_unfiltered (gdb_stdlog, |
3295 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3296 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3297 | } |
3298 | ||
3299 | /* Reply describes registers byte by byte, each byte encoded as two | |
3300 | hex characters. Suck them all up, then supply them to the | |
3301 | register cacheing/storage mechanism. */ | |
3302 | ||
3303 | p = buf; | |
ad10f812 | 3304 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3305 | { |
3306 | if (p[0] == 0) | |
3307 | break; | |
3308 | if (p[1] == 0) | |
3309 | { | |
3310 | warning ("Remote reply is of odd length: %s", buf); | |
3311 | /* Don't change register_bytes_found in this case, and don't | |
3312 | print a second warning. */ | |
3313 | goto supply_them; | |
3314 | } | |
3315 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3316 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3317 | else |
3318 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3319 | p += 2; | |
3320 | } | |
3321 | ||
3322 | if (i != register_bytes_found) | |
3323 | { | |
3324 | register_bytes_found = i; | |
2649061d AC |
3325 | if (REGISTER_BYTES_OK_P () |
3326 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3327 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3328 | } |
c5aa993b | 3329 | |
b323314b | 3330 | supply_them: |
ad10f812 | 3331 | { |
b323314b AC |
3332 | int i; |
3333 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3334 | { |
b323314b AC |
3335 | struct packet_reg *r = &rs->regs[i]; |
3336 | if (r->in_g_packet) | |
3337 | { | |
8ccc1287 AC |
3338 | if (r->offset * 2 >= strlen (buf)) |
3339 | /* A short packet that didn't include the register's | |
3340 | value, this implies that the register is zero (and | |
3341 | not that the register is unavailable). Supply that | |
3342 | zero value. */ | |
3343 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3344 | else if (buf[r->offset * 2] == 'x') | |
3345 | { | |
3346 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3347 | /* The register isn't available, mark it as such (at | |
3348 | the same time setting the value to zero). */ | |
3349 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3350 | set_register_cached (i, -1); | |
3351 | } | |
3352 | else | |
3353 | regcache_raw_supply (current_regcache, r->regnum, | |
3354 | regs + r->offset); | |
b323314b | 3355 | } |
ad10f812 AC |
3356 | } |
3357 | } | |
c906108c SS |
3358 | } |
3359 | ||
3360 | /* Prepare to store registers. Since we may send them all (using a | |
3361 | 'G' request), we have to read out the ones we don't want to change | |
3362 | first. */ | |
3363 | ||
c5aa993b | 3364 | static void |
fba45db2 | 3365 | remote_prepare_to_store (void) |
c906108c | 3366 | { |
cf0e1e0d DJ |
3367 | struct remote_state *rs = get_remote_state (); |
3368 | int i; | |
3369 | char buf[MAX_REGISTER_SIZE]; | |
3370 | ||
c906108c | 3371 | /* Make sure the entire registers array is valid. */ |
5a2468f5 JM |
3372 | switch (remote_protocol_P.support) |
3373 | { | |
3374 | case PACKET_DISABLE: | |
3375 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3376 | /* Make sure all the necessary registers are cached. */ |
3377 | for (i = 0; i < NUM_REGS; i++) | |
3378 | if (rs->regs[i].in_g_packet) | |
3379 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3380 | break; |
3381 | case PACKET_ENABLE: | |
3382 | break; | |
3383 | } | |
3384 | } | |
3385 | ||
ad10f812 | 3386 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
5a2468f5 JM |
3387 | packet was not recognized. */ |
3388 | ||
3389 | static int | |
ad10f812 | 3390 | store_register_using_P (int regnum) |
5a2468f5 | 3391 | { |
d01949b6 | 3392 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3393 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3394 | /* Try storing a single register. */ |
d01949b6 | 3395 | char *buf = alloca (rs->remote_packet_size); |
d9d9c31f | 3396 | char regp[MAX_REGISTER_SIZE]; |
5a2468f5 JM |
3397 | char *p; |
3398 | int i; | |
3399 | ||
ad10f812 | 3400 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3401 | p = buf + strlen (buf); |
822c9732 | 3402 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3403 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
ad10f812 | 3404 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3405 | |
3406 | return buf[0] != '\0'; | |
c906108c SS |
3407 | } |
3408 | ||
5a2468f5 | 3409 | |
ad10f812 | 3410 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents |
7302a204 | 3411 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3412 | |
3413 | static void | |
ad10f812 | 3414 | remote_store_registers (int regnum) |
c906108c | 3415 | { |
d01949b6 | 3416 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3417 | char *buf; |
3418 | char *regs; | |
c906108c SS |
3419 | int i; |
3420 | char *p; | |
3421 | ||
39f77062 | 3422 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3423 | |
ad10f812 | 3424 | if (regnum >= 0) |
c906108c | 3425 | { |
5a2468f5 | 3426 | switch (remote_protocol_P.support) |
c906108c | 3427 | { |
5a2468f5 JM |
3428 | case PACKET_DISABLE: |
3429 | break; | |
3430 | case PACKET_ENABLE: | |
ad10f812 | 3431 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3432 | return; |
3433 | else | |
3434 | error ("Protocol error: P packet not recognized by stub"); | |
3435 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3436 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3437 | { |
3438 | /* The stub recognized the 'P' packet. Remember this. */ | |
3439 | remote_protocol_P.support = PACKET_ENABLE; | |
3440 | return; | |
3441 | } | |
3442 | else | |
3443 | { | |
3444 | /* The stub does not support the 'P' packet. Use 'G' | |
3445 | instead, and don't try using 'P' in the future (it | |
3446 | will just waste our time). */ | |
3447 | remote_protocol_P.support = PACKET_DISABLE; | |
3448 | break; | |
3449 | } | |
c906108c | 3450 | } |
c906108c SS |
3451 | } |
3452 | ||
193cb69f AC |
3453 | /* Extract all the registers in the regcache copying them into a |
3454 | local buffer. */ | |
3455 | { | |
b323314b | 3456 | int i; |
ad10f812 AC |
3457 | regs = alloca (rs->sizeof_g_packet); |
3458 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3459 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3460 | { |
b323314b AC |
3461 | struct packet_reg *r = &rs->regs[i]; |
3462 | if (r->in_g_packet) | |
822c9732 | 3463 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3464 | } |
3465 | } | |
c906108c SS |
3466 | |
3467 | /* Command describes registers byte by byte, | |
3468 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3469 | buf = alloca (rs->remote_packet_size); |
3470 | p = buf; | |
3471 | *p++ = 'G'; | |
c906108c | 3472 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3473 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3474 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3475 | } |
c906108c SS |
3476 | \f |
3477 | ||
3478 | /* Return the number of hex digits in num. */ | |
3479 | ||
3480 | static int | |
fba45db2 | 3481 | hexnumlen (ULONGEST num) |
c906108c SS |
3482 | { |
3483 | int i; | |
3484 | ||
3485 | for (i = 0; num != 0; i++) | |
3486 | num >>= 4; | |
3487 | ||
3488 | return max (i, 1); | |
3489 | } | |
3490 | ||
2df3850c | 3491 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3492 | |
3493 | static int | |
fba45db2 | 3494 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3495 | { |
c906108c | 3496 | int len = hexnumlen (num); |
2df3850c JM |
3497 | return hexnumnstr (buf, num, len); |
3498 | } | |
3499 | ||
c906108c | 3500 | |
2df3850c | 3501 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3502 | |
2df3850c | 3503 | static int |
fba45db2 | 3504 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3505 | { |
3506 | int i; | |
3507 | ||
3508 | buf[width] = '\0'; | |
3509 | ||
3510 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3511 | { |
c5aa993b | 3512 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3513 | num >>= 4; |
3514 | } | |
3515 | ||
2df3850c | 3516 | return width; |
c906108c SS |
3517 | } |
3518 | ||
3519 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3520 | ||
3521 | static CORE_ADDR | |
fba45db2 | 3522 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3523 | { |
3524 | if (remote_address_size > 0 | |
3525 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3526 | { | |
3527 | /* Only create a mask when that mask can safely be constructed | |
3528 | in a ULONGEST variable. */ | |
3529 | ULONGEST mask = 1; | |
3530 | mask = (mask << remote_address_size) - 1; | |
3531 | addr &= mask; | |
3532 | } | |
3533 | return addr; | |
3534 | } | |
3535 | ||
3536 | /* Determine whether the remote target supports binary downloading. | |
3537 | This is accomplished by sending a no-op memory write of zero length | |
3538 | to the target at the specified address. It does not suffice to send | |
3539 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3540 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3541 | ||
96baa820 JM |
3542 | NOTE: This can still lose if the serial line is not eight-bit |
3543 | clean. In cases like this, the user should clear "remote | |
3544 | X-packet". */ | |
3545 | ||
c906108c | 3546 | static void |
fba45db2 | 3547 | check_binary_download (CORE_ADDR addr) |
c906108c | 3548 | { |
d01949b6 | 3549 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3550 | switch (remote_protocol_binary_download.support) |
c906108c | 3551 | { |
96baa820 JM |
3552 | case PACKET_DISABLE: |
3553 | break; | |
3554 | case PACKET_ENABLE: | |
3555 | break; | |
3556 | case PACKET_SUPPORT_UNKNOWN: | |
3557 | { | |
d01949b6 | 3558 | char *buf = alloca (rs->remote_packet_size); |
96baa820 | 3559 | char *p; |
802188a7 | 3560 | |
96baa820 JM |
3561 | p = buf; |
3562 | *p++ = 'X'; | |
3563 | p += hexnumstr (p, (ULONGEST) addr); | |
3564 | *p++ = ','; | |
3565 | p += hexnumstr (p, (ULONGEST) 0); | |
3566 | *p++ = ':'; | |
3567 | *p = '\0'; | |
802188a7 | 3568 | |
96baa820 | 3569 | putpkt_binary (buf, (int) (p - buf)); |
d01949b6 | 3570 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3571 | |
96baa820 JM |
3572 | if (buf[0] == '\0') |
3573 | { | |
3574 | if (remote_debug) | |
3575 | fprintf_unfiltered (gdb_stdlog, | |
3576 | "binary downloading NOT suppported by target\n"); | |
3577 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3578 | } | |
3579 | else | |
3580 | { | |
3581 | if (remote_debug) | |
3582 | fprintf_unfiltered (gdb_stdlog, | |
3583 | "binary downloading suppported by target\n"); | |
3584 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3585 | } | |
3586 | break; | |
3587 | } | |
c906108c SS |
3588 | } |
3589 | } | |
3590 | ||
3591 | /* Write memory data directly to the remote machine. | |
3592 | This does not inform the data cache; the data cache uses this. | |
3593 | MEMADDR is the address in the remote memory space. | |
3594 | MYADDR is the address of the buffer in our space. | |
3595 | LEN is the number of bytes. | |
3596 | ||
917317f4 JM |
3597 | Returns number of bytes transferred, or 0 (setting errno) for |
3598 | error. Only transfer a single packet. */ | |
c906108c | 3599 | |
449092f6 | 3600 | int |
917317f4 | 3601 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3602 | { |
917317f4 | 3603 | unsigned char *buf; |
917317f4 JM |
3604 | unsigned char *p; |
3605 | unsigned char *plen; | |
c2d11a7d | 3606 | long sizeof_buf; |
917317f4 JM |
3607 | int plenlen; |
3608 | int todo; | |
3609 | int nr_bytes; | |
a257b5bb AC |
3610 | int payload_size; |
3611 | unsigned char *payload_start; | |
c906108c | 3612 | |
a257b5bb | 3613 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3614 | check_binary_download (memaddr); |
3615 | ||
a257b5bb AC |
3616 | /* Compute the size, and then allocate space for the largest |
3617 | possible packet. Include space for an extra trailing NUL. */ | |
3618 | sizeof_buf = get_memory_write_packet_size () + 1; | |
c2d11a7d | 3619 | buf = alloca (sizeof_buf); |
c906108c | 3620 | |
a257b5bb AC |
3621 | /* Compute the size of the actual payload by subtracting out the |
3622 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ | |
3623 | payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN") | |
3624 | + hexnumlen (memaddr) | |
3625 | + hexnumlen (len))); | |
c906108c | 3626 | |
a257b5bb | 3627 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3628 | |
a257b5bb | 3629 | /* Append "[XM]". Compute a best guess of the number of bytes |
917317f4 | 3630 | actually transfered. */ |
a257b5bb | 3631 | p = buf; |
917317f4 | 3632 | switch (remote_protocol_binary_download.support) |
c906108c | 3633 | { |
917317f4 JM |
3634 | case PACKET_ENABLE: |
3635 | *p++ = 'X'; | |
3636 | /* Best guess at number of bytes that will fit. */ | |
a257b5bb | 3637 | todo = min (len, payload_size); |
917317f4 JM |
3638 | break; |
3639 | case PACKET_DISABLE: | |
3640 | *p++ = 'M'; | |
3641 | /* num bytes that will fit */ | |
a257b5bb | 3642 | todo = min (len, payload_size / 2); |
917317f4 JM |
3643 | break; |
3644 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3645 | internal_error (__FILE__, __LINE__, |
3646 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3647 | default: |
8e65ff28 | 3648 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 | 3649 | } |
802188a7 | 3650 | |
a257b5bb | 3651 | /* Append "<memaddr>". */ |
917317f4 JM |
3652 | memaddr = remote_address_masked (memaddr); |
3653 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3654 | |
3655 | /* Append ",". */ | |
917317f4 | 3656 | *p++ = ','; |
802188a7 | 3657 | |
a257b5bb AC |
3658 | /* Append <len>. Retain the location/size of <len>. It may need to |
3659 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3660 | plen = p; |
3661 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3662 | p += plenlen; | |
a257b5bb AC |
3663 | |
3664 | /* Append ":". */ | |
917317f4 JM |
3665 | *p++ = ':'; |
3666 | *p = '\0'; | |
802188a7 | 3667 | |
a257b5bb AC |
3668 | /* Append the packet body. */ |
3669 | payload_start = p; | |
917317f4 JM |
3670 | switch (remote_protocol_binary_download.support) |
3671 | { | |
3672 | case PACKET_ENABLE: | |
3673 | /* Binary mode. Send target system values byte by byte, in | |
3674 | increasing byte addresses. Only escape certain critical | |
3675 | characters. */ | |
3676 | for (nr_bytes = 0; | |
a257b5bb | 3677 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3678 | nr_bytes++) |
c906108c | 3679 | { |
917317f4 JM |
3680 | switch (myaddr[nr_bytes] & 0xff) |
3681 | { | |
3682 | case '$': | |
3683 | case '#': | |
3684 | case 0x7d: | |
3685 | /* These must be escaped */ | |
3686 | *p++ = 0x7d; | |
3687 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3688 | break; | |
3689 | default: | |
3690 | *p++ = myaddr[nr_bytes] & 0xff; | |
3691 | break; | |
3692 | } | |
c906108c | 3693 | } |
917317f4 | 3694 | if (nr_bytes < todo) |
c906108c | 3695 | { |
802188a7 | 3696 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3697 | and we have actually sent fewer bytes than planned. |
3698 | Fix-up the length field of the packet. Use the same | |
3699 | number of characters as before. */ | |
917317f4 JM |
3700 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3701 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3702 | } |
917317f4 JM |
3703 | break; |
3704 | case PACKET_DISABLE: | |
3705 | /* Normal mode: Send target system values byte by byte, in | |
3706 | increasing byte addresses. Each byte is encoded as a two hex | |
3707 | value. */ | |
2644f393 | 3708 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3709 | p += 2 * nr_bytes; |
917317f4 JM |
3710 | break; |
3711 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3712 | internal_error (__FILE__, __LINE__, |
3713 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3714 | default: |
8e65ff28 | 3715 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3716 | } |
802188a7 | 3717 | |
917317f4 | 3718 | putpkt_binary (buf, (int) (p - buf)); |
c2d11a7d | 3719 | getpkt (buf, sizeof_buf, 0); |
802188a7 | 3720 | |
917317f4 JM |
3721 | if (buf[0] == 'E') |
3722 | { | |
3723 | /* There is no correspondance between what the remote protocol | |
3724 | uses for errors and errno codes. We would like a cleaner way | |
3725 | of representing errors (big enough to include errno codes, | |
3726 | bfd_error codes, and others). But for now just return EIO. */ | |
3727 | errno = EIO; | |
3728 | return 0; | |
3729 | } | |
802188a7 | 3730 | |
917317f4 JM |
3731 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer |
3732 | bytes than we'd planned. */ | |
3733 | return nr_bytes; | |
c906108c SS |
3734 | } |
3735 | ||
3736 | /* Read memory data directly from the remote machine. | |
3737 | This does not use the data cache; the data cache uses this. | |
3738 | MEMADDR is the address in the remote memory space. | |
3739 | MYADDR is the address of the buffer in our space. | |
3740 | LEN is the number of bytes. | |
3741 | ||
3742 | Returns number of bytes transferred, or 0 for error. */ | |
3743 | ||
917317f4 JM |
3744 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3745 | remote targets) shouldn't attempt to read the entire buffer. | |
3746 | Instead it should read a single packet worth of data and then | |
3747 | return the byte size of that packet to the caller. The caller (its | |
3748 | caller and its callers caller ;-) already contains code for | |
3749 | handling partial reads. */ | |
3750 | ||
449092f6 | 3751 | int |
fba45db2 | 3752 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3753 | { |
11cf8741 | 3754 | char *buf; |
c906108c | 3755 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3756 | long sizeof_buf; |
c906108c SS |
3757 | int origlen; |
3758 | ||
11cf8741 JM |
3759 | /* Create a buffer big enough for this packet. */ |
3760 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3761 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3762 | buf = alloca (sizeof_buf); | |
c906108c SS |
3763 | |
3764 | origlen = len; | |
3765 | while (len > 0) | |
3766 | { | |
c906108c SS |
3767 | char *p; |
3768 | int todo; | |
3769 | int i; | |
3770 | ||
c5aa993b | 3771 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3772 | |
3773 | /* construct "m"<memaddr>","<len>" */ | |
3774 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3775 | memaddr = remote_address_masked (memaddr); | |
3776 | p = buf; | |
3777 | *p++ = 'm'; | |
3778 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3779 | *p++ = ','; | |
3780 | p += hexnumstr (p, (ULONGEST) todo); | |
3781 | *p = '\0'; | |
3782 | ||
3783 | putpkt (buf); | |
c2d11a7d | 3784 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3785 | |
66504d44 MS |
3786 | if (buf[0] == 'E' |
3787 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3788 | && buf[3] == '\0') | |
c906108c SS |
3789 | { |
3790 | /* There is no correspondance between what the remote protocol uses | |
3791 | for errors and errno codes. We would like a cleaner way of | |
3792 | representing errors (big enough to include errno codes, bfd_error | |
3793 | codes, and others). But for now just return EIO. */ | |
3794 | errno = EIO; | |
3795 | return 0; | |
3796 | } | |
3797 | ||
c5aa993b JM |
3798 | /* Reply describes memory byte by byte, |
3799 | each byte encoded as two hex characters. */ | |
c906108c SS |
3800 | |
3801 | p = buf; | |
30559e10 | 3802 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3803 | { |
30559e10 MS |
3804 | /* Reply is short. This means that we were able to read |
3805 | only part of what we wanted to. */ | |
3806 | return i + (origlen - len); | |
c906108c SS |
3807 | } |
3808 | myaddr += todo; | |
3809 | memaddr += todo; | |
3810 | len -= todo; | |
3811 | } | |
3812 | return origlen; | |
3813 | } | |
3814 | \f | |
3815 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3816 | transferring to or from debugger address BUFFER. Write to inferior if |
3817 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3818 | for error. TARGET is unused. */ |
392a587b | 3819 | |
c906108c | 3820 | static int |
c338868a | 3821 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 3822 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3823 | struct target_ops *target) |
c906108c | 3824 | { |
392a587b JM |
3825 | CORE_ADDR targ_addr; |
3826 | int targ_len; | |
4930751a C |
3827 | int res; |
3828 | ||
f6684c31 AC |
3829 | /* Should this be the selected frame? */ |
3830 | gdbarch_remote_translate_xfer_address (current_gdbarch, current_regcache, | |
3831 | mem_addr, mem_len, | |
3832 | &targ_addr, &targ_len); | |
392a587b | 3833 | if (targ_len <= 0) |
c906108c | 3834 | return 0; |
c906108c | 3835 | |
4930751a C |
3836 | if (should_write) |
3837 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3838 | else | |
3839 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3840 | ||
3841 | return res; | |
c906108c SS |
3842 | } |
3843 | ||
c906108c | 3844 | static void |
fba45db2 | 3845 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3846 | { |
3847 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3848 | } | |
3849 | \f | |
3850 | /* Stuff for dealing with the packets which are part of this protocol. | |
3851 | See comment at top of file for details. */ | |
3852 | ||
3853 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3854 | ||
3855 | static int | |
fba45db2 | 3856 | readchar (int timeout) |
c906108c SS |
3857 | { |
3858 | int ch; | |
3859 | ||
2cd58942 | 3860 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3861 | |
2acceee2 JM |
3862 | if (ch >= 0) |
3863 | return (ch & 0x7f); | |
3864 | ||
3865 | switch ((enum serial_rc) ch) | |
c906108c SS |
3866 | { |
3867 | case SERIAL_EOF: | |
2acceee2 | 3868 | target_mourn_inferior (); |
c906108c | 3869 | error ("Remote connection closed"); |
2acceee2 | 3870 | /* no return */ |
c906108c SS |
3871 | case SERIAL_ERROR: |
3872 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3873 | /* no return */ |
c906108c | 3874 | case SERIAL_TIMEOUT: |
2acceee2 | 3875 | break; |
c906108c | 3876 | } |
2acceee2 | 3877 | return ch; |
c906108c SS |
3878 | } |
3879 | ||
3880 | /* Send the command in BUF to the remote machine, and read the reply | |
3881 | into BUF. Report an error if we get an error reply. */ | |
3882 | ||
3883 | static void | |
c2d11a7d JM |
3884 | remote_send (char *buf, |
3885 | long sizeof_buf) | |
c906108c SS |
3886 | { |
3887 | putpkt (buf); | |
c2d11a7d | 3888 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3889 | |
3890 | if (buf[0] == 'E') | |
3891 | error ("Remote failure reply: %s", buf); | |
3892 | } | |
3893 | ||
3894 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3895 | string notation. */ | |
3896 | ||
3897 | static void | |
fba45db2 | 3898 | print_packet (char *buf) |
c906108c SS |
3899 | { |
3900 | puts_filtered ("\""); | |
43e526b9 | 3901 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3902 | puts_filtered ("\""); |
3903 | } | |
3904 | ||
3905 | int | |
fba45db2 | 3906 | putpkt (char *buf) |
c906108c SS |
3907 | { |
3908 | return putpkt_binary (buf, strlen (buf)); | |
3909 | } | |
3910 | ||
3911 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 3912 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
3913 | to account for the $, # and checksum, and for a possible /0 if we are |
3914 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3915 | ||
3916 | static int | |
fba45db2 | 3917 | putpkt_binary (char *buf, int cnt) |
c906108c | 3918 | { |
d01949b6 | 3919 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3920 | int i; |
3921 | unsigned char csum = 0; | |
11cf8741 | 3922 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 3923 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 3924 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 3925 | |
c906108c SS |
3926 | int ch; |
3927 | int tcount = 0; | |
3928 | char *p; | |
3929 | ||
3930 | /* Copy the packet into buffer BUF2, encapsulating it | |
3931 | and giving it a checksum. */ | |
3932 | ||
c906108c SS |
3933 | p = buf2; |
3934 | *p++ = '$'; | |
3935 | ||
3936 | for (i = 0; i < cnt; i++) | |
3937 | { | |
3938 | csum += buf[i]; | |
3939 | *p++ = buf[i]; | |
3940 | } | |
3941 | *p++ = '#'; | |
3942 | *p++ = tohex ((csum >> 4) & 0xf); | |
3943 | *p++ = tohex (csum & 0xf); | |
3944 | ||
3945 | /* Send it over and over until we get a positive ack. */ | |
3946 | ||
3947 | while (1) | |
3948 | { | |
3949 | int started_error_output = 0; | |
3950 | ||
3951 | if (remote_debug) | |
3952 | { | |
3953 | *p = '\0'; | |
43e526b9 JM |
3954 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3955 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3956 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3957 | gdb_flush (gdb_stdlog); |
c906108c | 3958 | } |
2cd58942 | 3959 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
3960 | perror_with_name ("putpkt: write failed"); |
3961 | ||
3962 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3963 | while (1) | |
3964 | { | |
3965 | ch = readchar (remote_timeout); | |
3966 | ||
c5aa993b | 3967 | if (remote_debug) |
c906108c SS |
3968 | { |
3969 | switch (ch) | |
3970 | { | |
3971 | case '+': | |
1216fa2c | 3972 | case '-': |
c906108c SS |
3973 | case SERIAL_TIMEOUT: |
3974 | case '$': | |
3975 | if (started_error_output) | |
3976 | { | |
3977 | putchar_unfiltered ('\n'); | |
3978 | started_error_output = 0; | |
3979 | } | |
3980 | } | |
3981 | } | |
3982 | ||
3983 | switch (ch) | |
3984 | { | |
3985 | case '+': | |
3986 | if (remote_debug) | |
0f71a2f6 | 3987 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3988 | return 1; |
1216fa2c AC |
3989 | case '-': |
3990 | if (remote_debug) | |
3991 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3992 | case SERIAL_TIMEOUT: |
c5aa993b | 3993 | tcount++; |
c906108c SS |
3994 | if (tcount > 3) |
3995 | return 0; | |
3996 | break; /* Retransmit buffer */ | |
3997 | case '$': | |
3998 | { | |
40e3f985 FN |
3999 | if (remote_debug) |
4000 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
4001 | /* It's probably an old response sent because an ACK |
4002 | was lost. Gobble up the packet and ack it so it | |
4003 | doesn't get retransmitted when we resend this | |
4004 | packet. */ | |
40e3f985 | 4005 | read_frame (junkbuf, sizeof_junkbuf); |
d6f7abdf | 4006 | serial_write (remote_desc, "+", 1); |
c5aa993b | 4007 | continue; /* Now, go look for + */ |
c906108c SS |
4008 | } |
4009 | default: | |
4010 | if (remote_debug) | |
4011 | { | |
4012 | if (!started_error_output) | |
4013 | { | |
4014 | started_error_output = 1; | |
0f71a2f6 | 4015 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4016 | } |
0f71a2f6 | 4017 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4018 | } |
4019 | continue; | |
4020 | } | |
4021 | break; /* Here to retransmit */ | |
4022 | } | |
4023 | ||
4024 | #if 0 | |
4025 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4026 | able to get out next time we call QUIT, without anything as |
4027 | violent as interrupt_query. If we want to provide a way out of | |
4028 | here without getting to the next QUIT, it should be based on | |
4029 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4030 | if (quit_flag) |
4031 | { | |
4032 | quit_flag = 0; | |
4033 | interrupt_query (); | |
4034 | } | |
4035 | #endif | |
4036 | } | |
4037 | } | |
4038 | ||
4039 | /* Come here after finding the start of the frame. Collect the rest | |
4040 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4041 | compression. No more than sizeof_buf-1 characters are read so that |
4042 | the buffer can be NUL terminated. | |
c906108c | 4043 | |
c2d11a7d JM |
4044 | Returns -1 on error, number of characters in buffer (ignoring the |
4045 | trailing NULL) on success. (could be extended to return one of the | |
4046 | SERIAL status indications). */ | |
4047 | ||
4048 | static long | |
4049 | read_frame (char *buf, | |
4050 | long sizeof_buf) | |
c906108c SS |
4051 | { |
4052 | unsigned char csum; | |
c2d11a7d | 4053 | long bc; |
c906108c SS |
4054 | int c; |
4055 | ||
4056 | csum = 0; | |
c2d11a7d | 4057 | bc = 0; |
c906108c SS |
4058 | |
4059 | while (1) | |
4060 | { | |
c2d11a7d | 4061 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4062 | c = readchar (remote_timeout); |
c906108c SS |
4063 | switch (c) |
4064 | { | |
4065 | case SERIAL_TIMEOUT: | |
4066 | if (remote_debug) | |
0f71a2f6 | 4067 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4068 | return -1; |
c906108c SS |
4069 | case '$': |
4070 | if (remote_debug) | |
0f71a2f6 JM |
4071 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4072 | gdb_stdlog); | |
c2d11a7d | 4073 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4074 | case '#': |
4075 | { | |
4076 | unsigned char pktcsum; | |
e1b09194 AC |
4077 | int check_0 = 0; |
4078 | int check_1 = 0; | |
c906108c | 4079 | |
c2d11a7d | 4080 | buf[bc] = '\0'; |
c906108c | 4081 | |
e1b09194 AC |
4082 | check_0 = readchar (remote_timeout); |
4083 | if (check_0 >= 0) | |
4084 | check_1 = readchar (remote_timeout); | |
802188a7 | 4085 | |
e1b09194 AC |
4086 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4087 | { | |
4088 | if (remote_debug) | |
4089 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4090 | return -1; | |
4091 | } | |
4092 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4093 | { |
4094 | if (remote_debug) | |
4095 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4096 | return -1; | |
4097 | } | |
c906108c | 4098 | |
e1b09194 | 4099 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4100 | if (csum == pktcsum) |
c2d11a7d | 4101 | return bc; |
c906108c | 4102 | |
c5aa993b | 4103 | if (remote_debug) |
c906108c | 4104 | { |
0f71a2f6 | 4105 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4106 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4107 | pktcsum, csum); |
4108 | fputs_filtered (buf, gdb_stdlog); | |
4109 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4110 | } |
c2d11a7d JM |
4111 | /* Number of characters in buffer ignoring trailing |
4112 | NUL. */ | |
4113 | return -1; | |
c906108c SS |
4114 | } |
4115 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4116 | { |
4117 | int repeat; | |
4118 | csum += c; | |
c906108c | 4119 | |
b4501125 AC |
4120 | c = readchar (remote_timeout); |
4121 | csum += c; | |
4122 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
c906108c | 4123 | |
c2d11a7d JM |
4124 | /* The character before ``*'' is repeated. */ |
4125 | ||
802188a7 | 4126 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4127 | && bc > 0 |
fb6e5c55 | 4128 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4129 | { |
c2d11a7d JM |
4130 | memset (&buf[bc], buf[bc - 1], repeat); |
4131 | bc += repeat; | |
c2c6d25f JM |
4132 | continue; |
4133 | } | |
4134 | ||
c2d11a7d | 4135 | buf[bc] = '\0'; |
c2c6d25f JM |
4136 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4137 | puts_filtered (buf); | |
4138 | puts_filtered ("\n"); | |
c2d11a7d | 4139 | return -1; |
c2c6d25f | 4140 | } |
c906108c | 4141 | default: |
c2d11a7d | 4142 | if (bc < sizeof_buf - 1) |
c906108c | 4143 | { |
c2d11a7d | 4144 | buf[bc++] = c; |
c906108c SS |
4145 | csum += c; |
4146 | continue; | |
4147 | } | |
4148 | ||
c2d11a7d | 4149 | buf[bc] = '\0'; |
c906108c SS |
4150 | puts_filtered ("Remote packet too long: "); |
4151 | puts_filtered (buf); | |
4152 | puts_filtered ("\n"); | |
4153 | ||
c2d11a7d | 4154 | return -1; |
c906108c SS |
4155 | } |
4156 | } | |
4157 | } | |
4158 | ||
4159 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4160 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4161 | this is used (in synchronous mode) to wait for a target that is is | |
4162 | executing user code to stop. */ | |
d9fcf2fb JM |
4163 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4164 | don't have to change all the calls to getpkt to deal with the | |
4165 | return value, because at the moment I don't know what the right | |
4166 | thing to do it for those. */ | |
c906108c | 4167 | void |
c2d11a7d JM |
4168 | getpkt (char *buf, |
4169 | long sizeof_buf, | |
4170 | int forever) | |
d9fcf2fb JM |
4171 | { |
4172 | int timed_out; | |
4173 | ||
4174 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4175 | } | |
4176 | ||
4177 | ||
4178 | /* Read a packet from the remote machine, with error checking, and | |
4179 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4180 | this is used (in synchronous mode) to wait for a target that is is | |
4181 | executing user code to stop. If FOREVER == 0, this function is | |
4182 | allowed to time out gracefully and return an indication of this to | |
4183 | the caller. */ | |
3172dc30 | 4184 | static int |
d9fcf2fb JM |
4185 | getpkt_sane (char *buf, |
4186 | long sizeof_buf, | |
4187 | int forever) | |
c906108c SS |
4188 | { |
4189 | int c; | |
4190 | int tries; | |
4191 | int timeout; | |
4192 | int val; | |
4193 | ||
c5aa993b | 4194 | strcpy (buf, "timeout"); |
c906108c SS |
4195 | |
4196 | if (forever) | |
4197 | { | |
c906108c | 4198 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4199 | } |
4200 | ||
4201 | else | |
4202 | timeout = remote_timeout; | |
4203 | ||
4204 | #define MAX_TRIES 3 | |
4205 | ||
4206 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4207 | { | |
4208 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4209 | continuously, but if it pauses, we'll get a zero from readchar |
4210 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4211 | |
4212 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4213 | After that, we expect characters to arrive at a brisk pace. They |
4214 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4215 | |
4216 | do | |
4217 | { | |
4218 | c = readchar (timeout); | |
4219 | ||
4220 | if (c == SERIAL_TIMEOUT) | |
4221 | { | |
2acceee2 | 4222 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4223 | { |
2acceee2 | 4224 | QUIT; |
c906108c SS |
4225 | target_mourn_inferior (); |
4226 | error ("Watchdog has expired. Target detached.\n"); | |
4227 | } | |
c906108c | 4228 | if (remote_debug) |
0f71a2f6 | 4229 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4230 | goto retry; |
4231 | } | |
4232 | } | |
4233 | while (c != '$'); | |
4234 | ||
4235 | /* We've found the start of a packet, now collect the data. */ | |
4236 | ||
c2d11a7d | 4237 | val = read_frame (buf, sizeof_buf); |
c906108c | 4238 | |
c2d11a7d | 4239 | if (val >= 0) |
c906108c SS |
4240 | { |
4241 | if (remote_debug) | |
43e526b9 JM |
4242 | { |
4243 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4244 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4245 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4246 | } | |
2cd58942 | 4247 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4248 | return 0; |
c906108c SS |
4249 | } |
4250 | ||
4251 | /* Try the whole thing again. */ | |
4252 | retry: | |
2cd58942 | 4253 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4254 | } |
4255 | ||
4256 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4257 | ||
4258 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4259 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4260 | return 1; |
c906108c SS |
4261 | } |
4262 | \f | |
4263 | static void | |
fba45db2 | 4264 | remote_kill (void) |
c906108c SS |
4265 | { |
4266 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4267 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4268 | if (kill_kludge) | |
4269 | { | |
4270 | kill_kludge = 0; | |
4271 | target_mourn_inferior (); | |
4272 | return; | |
4273 | } | |
4274 | ||
4275 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4276 | speaking terms with the remote system. */ | |
c5aa993b | 4277 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4278 | |
4279 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4280 | we do or not. For the existing stubs, kill is a noop. */ | |
4281 | target_mourn_inferior (); | |
4282 | } | |
4283 | ||
43ff13b4 JM |
4284 | /* Async version of remote_kill. */ |
4285 | static void | |
fba45db2 | 4286 | remote_async_kill (void) |
43ff13b4 JM |
4287 | { |
4288 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4289 | if (target_is_async_p ()) |
2cd58942 | 4290 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4291 | |
4292 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4293 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4294 | if (kill_kludge) | |
4295 | { | |
4296 | kill_kludge = 0; | |
4297 | target_mourn_inferior (); | |
4298 | return; | |
4299 | } | |
4300 | ||
4301 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4302 | speaking terms with the remote system. */ | |
c5aa993b | 4303 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4304 | |
4305 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4306 | we do or not. For the existing stubs, kill is a noop. */ | |
4307 | target_mourn_inferior (); | |
4308 | } | |
4309 | ||
c906108c | 4310 | static void |
fba45db2 | 4311 | remote_mourn (void) |
c906108c SS |
4312 | { |
4313 | remote_mourn_1 (&remote_ops); | |
4314 | } | |
4315 | ||
53a5351d | 4316 | static void |
fba45db2 | 4317 | remote_async_mourn (void) |
53a5351d JM |
4318 | { |
4319 | remote_mourn_1 (&remote_async_ops); | |
4320 | } | |
4321 | ||
c906108c | 4322 | static void |
fba45db2 | 4323 | extended_remote_mourn (void) |
c906108c SS |
4324 | { |
4325 | /* We do _not_ want to mourn the target like this; this will | |
4326 | remove the extended remote target from the target stack, | |
802188a7 | 4327 | and the next time the user says "run" it'll fail. |
c906108c SS |
4328 | |
4329 | FIXME: What is the right thing to do here? */ | |
4330 | #if 0 | |
4331 | remote_mourn_1 (&extended_remote_ops); | |
4332 | #endif | |
4333 | } | |
4334 | ||
4335 | /* Worker function for remote_mourn. */ | |
4336 | static void | |
fba45db2 | 4337 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4338 | { |
4339 | unpush_target (target); | |
4340 | generic_mourn_inferior (); | |
4341 | } | |
4342 | ||
4343 | /* In the extended protocol we want to be able to do things like | |
4344 | "run" and have them basically work as expected. So we need | |
802188a7 | 4345 | a special create_inferior function. |
c906108c SS |
4346 | |
4347 | FIXME: One day add support for changing the exec file | |
4348 | we're debugging, arguments and an environment. */ | |
4349 | ||
4350 | static void | |
c27cda74 AC |
4351 | extended_remote_create_inferior (char *exec_file, char *args, char **env, |
4352 | int from_tty) | |
c906108c SS |
4353 | { |
4354 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4355 | the remote server. */ | |
4356 | remove_breakpoints (); | |
4357 | ||
4358 | /* Now restart the remote server. */ | |
4359 | extended_remote_restart (); | |
4360 | ||
4361 | /* Now put the breakpoints back in. This way we're safe if the | |
4362 | restart function works via a unix fork on the remote side. */ | |
4363 | insert_breakpoints (); | |
4364 | ||
4365 | /* Clean up from the last time we were running. */ | |
4366 | clear_proceed_status (); | |
4367 | ||
4368 | /* Let the remote process run. */ | |
4369 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4370 | } | |
4371 | ||
43ff13b4 JM |
4372 | /* Async version of extended_remote_create_inferior. */ |
4373 | static void | |
c27cda74 AC |
4374 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env, |
4375 | int from_tty) | |
43ff13b4 JM |
4376 | { |
4377 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4378 | the remote server. */ | |
4379 | remove_breakpoints (); | |
4380 | ||
4381 | /* If running asynchronously, register the target file descriptor | |
4382 | with the event loop. */ | |
362646f5 | 4383 | if (target_can_async_p ()) |
2acceee2 | 4384 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4385 | |
4386 | /* Now restart the remote server. */ | |
4387 | extended_remote_restart (); | |
4388 | ||
4389 | /* Now put the breakpoints back in. This way we're safe if the | |
4390 | restart function works via a unix fork on the remote side. */ | |
4391 | insert_breakpoints (); | |
4392 | ||
4393 | /* Clean up from the last time we were running. */ | |
4394 | clear_proceed_status (); | |
4395 | ||
4396 | /* Let the remote process run. */ | |
4397 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4398 | } | |
c906108c | 4399 | \f |
c5aa993b | 4400 | |
aaab4dba | 4401 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4402 | instruction than other targets; in those use |
4403 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4404 | Also, bi-endian targets may define | |
4405 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4406 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4407 | just call the standard routines that are in mem-break.c. */ | |
4408 | ||
4409 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4410 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4411 | the ARCH-OS-tdep.c code can override the default. */ | |
4412 | ||
4413 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4414 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4415 | #endif |
4416 | ||
7fec2c59 | 4417 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4418 | |
4419 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4420 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4421 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4422 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4423 | #endif |
4424 | ||
7fec2c59 AC |
4425 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4426 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4427 | |
7fec2c59 | 4428 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4429 | |
aaab4dba AC |
4430 | /* Insert a breakpoint on targets that don't have any better |
4431 | breakpoint support. We read the contents of the target location | |
4432 | and stash it, then overwrite it with a breakpoint instruction. | |
4433 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4434 | is a pointer to memory allocated for saving the target contents. | |
4435 | It is guaranteed by the caller to be long enough to save the number | |
4436 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4437 | |
4438 | static int | |
fba45db2 | 4439 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4440 | { |
d01949b6 | 4441 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4442 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4443 | int val; |
802188a7 | 4444 | #endif |
96baa820 JM |
4445 | int bp_size; |
4446 | ||
d471ea57 AC |
4447 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4448 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4449 | fails, and the user has explicitly requested the Z support then | |
4450 | report an error, otherwise, mark it disabled and go on. */ | |
802188a7 | 4451 | |
d471ea57 | 4452 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4453 | { |
d01949b6 | 4454 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4455 | char *p = buf; |
802188a7 | 4456 | |
0caabb7e | 4457 | addr = remote_address_masked (addr); |
96baa820 JM |
4458 | *(p++) = 'Z'; |
4459 | *(p++) = '0'; | |
4460 | *(p++) = ','; | |
0caabb7e AC |
4461 | p += hexnumstr (p, (ULONGEST) addr); |
4462 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4463 | sprintf (p, ",%d", bp_size); |
802188a7 | 4464 | |
96baa820 | 4465 | putpkt (buf); |
d01949b6 | 4466 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4467 | |
d471ea57 | 4468 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4469 | { |
d471ea57 AC |
4470 | case PACKET_ERROR: |
4471 | return -1; | |
4472 | case PACKET_OK: | |
4473 | return 0; | |
4474 | case PACKET_UNKNOWN: | |
4475 | break; | |
96baa820 JM |
4476 | } |
4477 | } | |
c906108c | 4478 | |
802188a7 | 4479 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4480 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4481 | ||
4482 | if (val == 0) | |
4483 | { | |
d7449b42 | 4484 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4485 | val = target_write_memory (addr, (char *) big_break_insn, |
4486 | sizeof big_break_insn); | |
4487 | else | |
4488 | val = target_write_memory (addr, (char *) little_break_insn, | |
4489 | sizeof little_break_insn); | |
4490 | } | |
4491 | ||
4492 | return val; | |
4493 | #else | |
4494 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4495 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4496 | } |
4497 | ||
4498 | static int | |
fba45db2 | 4499 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4500 | { |
d01949b6 | 4501 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4502 | int bp_size; |
4503 | ||
d471ea57 | 4504 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4505 | { |
d01949b6 | 4506 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4507 | char *p = buf; |
802188a7 | 4508 | |
96baa820 JM |
4509 | *(p++) = 'z'; |
4510 | *(p++) = '0'; | |
4511 | *(p++) = ','; | |
4512 | ||
0caabb7e AC |
4513 | addr = remote_address_masked (addr); |
4514 | p += hexnumstr (p, (ULONGEST) addr); | |
4515 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4516 | sprintf (p, ",%d", bp_size); |
802188a7 | 4517 | |
96baa820 | 4518 | putpkt (buf); |
d01949b6 | 4519 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4520 | |
4521 | return (buf[0] == 'E'); | |
4522 | } | |
4523 | ||
7fec2c59 | 4524 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4525 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4526 | #else | |
4527 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4528 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4529 | } |
4530 | ||
d471ea57 AC |
4531 | static int |
4532 | watchpoint_to_Z_packet (int type) | |
4533 | { | |
4534 | switch (type) | |
4535 | { | |
4536 | case hw_write: | |
4537 | return 2; | |
4538 | break; | |
4539 | case hw_read: | |
4540 | return 3; | |
4541 | break; | |
4542 | case hw_access: | |
4543 | return 4; | |
4544 | break; | |
4545 | default: | |
8e65ff28 AC |
4546 | internal_error (__FILE__, __LINE__, |
4547 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4548 | } |
4549 | } | |
4550 | ||
3c3bea1c | 4551 | static int |
fba45db2 | 4552 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4553 | { |
d01949b6 AC |
4554 | struct remote_state *rs = get_remote_state (); |
4555 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4556 | char *p; |
d471ea57 | 4557 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4558 | |
d471ea57 AC |
4559 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4560 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4561 | remote_protocol_Z[packet].name, | |
4562 | remote_protocol_Z[packet].title); | |
802188a7 | 4563 | |
d471ea57 | 4564 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4565 | p = strchr (buf, '\0'); |
4566 | addr = remote_address_masked (addr); | |
4567 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4568 | sprintf (p, ",%x", len); |
802188a7 | 4569 | |
96baa820 | 4570 | putpkt (buf); |
d01949b6 | 4571 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4572 | |
d471ea57 AC |
4573 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4574 | { | |
4575 | case PACKET_ERROR: | |
4576 | case PACKET_UNKNOWN: | |
4577 | return -1; | |
4578 | case PACKET_OK: | |
4579 | return 0; | |
4580 | } | |
8e65ff28 AC |
4581 | internal_error (__FILE__, __LINE__, |
4582 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4583 | } |
4584 | ||
d471ea57 | 4585 | |
3c3bea1c | 4586 | static int |
fba45db2 | 4587 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4588 | { |
d01949b6 AC |
4589 | struct remote_state *rs = get_remote_state (); |
4590 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4591 | char *p; |
d471ea57 AC |
4592 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4593 | ||
4594 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4595 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4596 | remote_protocol_Z[packet].name, | |
4597 | remote_protocol_Z[packet].title); | |
802188a7 | 4598 | |
d471ea57 | 4599 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4600 | p = strchr (buf, '\0'); |
4601 | addr = remote_address_masked (addr); | |
4602 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4603 | sprintf (p, ",%x", len); |
96baa820 | 4604 | putpkt (buf); |
d01949b6 | 4605 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4606 | |
d471ea57 AC |
4607 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4608 | { | |
4609 | case PACKET_ERROR: | |
4610 | case PACKET_UNKNOWN: | |
4611 | return -1; | |
4612 | case PACKET_OK: | |
4613 | return 0; | |
4614 | } | |
8e65ff28 AC |
4615 | internal_error (__FILE__, __LINE__, |
4616 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4617 | } |
4618 | ||
3c3bea1c | 4619 | |
501eef12 AC |
4620 | int remote_hw_watchpoint_limit = -1; |
4621 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4622 | |
b9362cc7 | 4623 | static int |
3c3bea1c | 4624 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4625 | { |
3c3bea1c GS |
4626 | if (type == bp_hardware_breakpoint) |
4627 | { | |
4628 | if (remote_hw_breakpoint_limit == 0) | |
4629 | return 0; | |
501eef12 AC |
4630 | else if (remote_hw_breakpoint_limit < 0) |
4631 | return 1; | |
3c3bea1c GS |
4632 | else if (cnt <= remote_hw_breakpoint_limit) |
4633 | return 1; | |
4634 | } | |
4635 | else | |
4636 | { | |
4637 | if (remote_hw_watchpoint_limit == 0) | |
4638 | return 0; | |
501eef12 AC |
4639 | else if (remote_hw_watchpoint_limit < 0) |
4640 | return 1; | |
3c3bea1c GS |
4641 | else if (ot) |
4642 | return -1; | |
4643 | else if (cnt <= remote_hw_watchpoint_limit) | |
4644 | return 1; | |
4645 | } | |
4646 | return -1; | |
4647 | } | |
4648 | ||
b9362cc7 | 4649 | static int |
3c3bea1c GS |
4650 | remote_stopped_by_watchpoint (void) |
4651 | { | |
4652 | return remote_stopped_by_watchpoint_p; | |
4653 | } | |
4654 | ||
7270d8f2 OF |
4655 | extern int stepped_after_stopped_by_watchpoint; |
4656 | ||
4aa7a7f5 JJ |
4657 | static int |
4658 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4659 | { |
4aa7a7f5 | 4660 | int rc = 0; |
7270d8f2 OF |
4661 | if (remote_stopped_by_watchpoint () |
4662 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4663 | { |
4664 | *addr_p = remote_watch_data_address; | |
4665 | rc = 1; | |
4666 | } | |
4667 | ||
4668 | return rc; | |
3c3bea1c GS |
4669 | } |
4670 | ||
4671 | ||
4672 | static int | |
4673 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4674 | { | |
4675 | int len = 0; | |
d01949b6 AC |
4676 | struct remote_state *rs = get_remote_state (); |
4677 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4678 | char *p = buf; |
802188a7 | 4679 | |
c8189ed1 GS |
4680 | /* The length field should be set to the size of a breakpoint |
4681 | instruction. */ | |
4682 | ||
802188a7 | 4683 | BREAKPOINT_FROM_PC (&addr, &len); |
3c3bea1c | 4684 | |
d471ea57 AC |
4685 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4686 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4687 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4688 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4689 | |
96baa820 JM |
4690 | *(p++) = 'Z'; |
4691 | *(p++) = '1'; | |
4692 | *(p++) = ','; | |
802188a7 | 4693 | |
96baa820 JM |
4694 | addr = remote_address_masked (addr); |
4695 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4696 | sprintf (p, ",%x", len); |
96baa820 JM |
4697 | |
4698 | putpkt (buf); | |
d01949b6 | 4699 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4700 | |
d471ea57 AC |
4701 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4702 | { | |
4703 | case PACKET_ERROR: | |
4704 | case PACKET_UNKNOWN: | |
4705 | return -1; | |
4706 | case PACKET_OK: | |
4707 | return 0; | |
4708 | } | |
8e65ff28 | 4709 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4710 | "remote_insert_hw_breakpoint: reached end of function"); |
96baa820 JM |
4711 | } |
4712 | ||
d471ea57 | 4713 | |
802188a7 | 4714 | static int |
3c3bea1c | 4715 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) |
96baa820 | 4716 | { |
3c3bea1c | 4717 | int len; |
d01949b6 AC |
4718 | struct remote_state *rs = get_remote_state (); |
4719 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4720 | char *p = buf; |
c8189ed1 GS |
4721 | |
4722 | /* The length field should be set to the size of a breakpoint | |
4723 | instruction. */ | |
4724 | ||
4725 | BREAKPOINT_FROM_PC (&addr, &len); | |
4726 | ||
d471ea57 AC |
4727 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4728 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4729 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4730 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4731 | |
96baa820 JM |
4732 | *(p++) = 'z'; |
4733 | *(p++) = '1'; | |
4734 | *(p++) = ','; | |
802188a7 | 4735 | |
96baa820 JM |
4736 | addr = remote_address_masked (addr); |
4737 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4738 | sprintf (p, ",%x", len); |
96baa820 JM |
4739 | |
4740 | putpkt(buf); | |
d01949b6 | 4741 | getpkt (buf, (rs->remote_packet_size), 0); |
802188a7 | 4742 | |
d471ea57 AC |
4743 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4744 | { | |
4745 | case PACKET_ERROR: | |
4746 | case PACKET_UNKNOWN: | |
4747 | return -1; | |
4748 | case PACKET_OK: | |
4749 | return 0; | |
4750 | } | |
8e65ff28 | 4751 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4752 | "remote_remove_hw_breakpoint: reached end of function"); |
96baa820 | 4753 | } |
96baa820 | 4754 | |
c906108c SS |
4755 | /* Some targets are only capable of doing downloads, and afterwards |
4756 | they switch to the remote serial protocol. This function provides | |
4757 | a clean way to get from the download target to the remote target. | |
4758 | It's basically just a wrapper so that we don't have to expose any | |
4759 | of the internal workings of remote.c. | |
4760 | ||
4761 | Prior to calling this routine, you should shutdown the current | |
4762 | target code, else you will get the "A program is being debugged | |
4763 | already..." message. Usually a call to pop_target() suffices. */ | |
4764 | ||
4765 | void | |
fba45db2 | 4766 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4767 | { |
4768 | printf_filtered ("Switching to remote protocol\n"); | |
4769 | remote_open (name, from_tty); | |
4770 | } | |
4771 | ||
c906108c SS |
4772 | /* Table used by the crc32 function to calcuate the checksum. */ |
4773 | ||
c5aa993b JM |
4774 | static unsigned long crc32_table[256] = |
4775 | {0, 0}; | |
c906108c SS |
4776 | |
4777 | static unsigned long | |
fba45db2 | 4778 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4779 | { |
c5aa993b | 4780 | if (!crc32_table[1]) |
c906108c SS |
4781 | { |
4782 | /* Initialize the CRC table and the decoding table. */ | |
4783 | int i, j; | |
4784 | unsigned int c; | |
4785 | ||
4786 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4787 | { |
4788 | for (c = i << 24, j = 8; j > 0; --j) | |
4789 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4790 | crc32_table[i] = c; | |
4791 | } | |
c906108c SS |
4792 | } |
4793 | ||
4794 | while (len--) | |
4795 | { | |
4796 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4797 | buf++; | |
4798 | } | |
4799 | return crc; | |
4800 | } | |
4801 | ||
4802 | /* compare-sections command | |
4803 | ||
4804 | With no arguments, compares each loadable section in the exec bfd | |
4805 | with the same memory range on the target, and reports mismatches. | |
4806 | Useful for verifying the image on the target against the exec file. | |
4807 | Depends on the target understanding the new "qCRC:" request. */ | |
4808 | ||
e514a9d6 JM |
4809 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4810 | target method (target verify memory) and generic version of the | |
4811 | actual command. This will allow other high-level code (especially | |
4812 | generic_load()) to make use of this target functionality. */ | |
4813 | ||
c906108c | 4814 | static void |
fba45db2 | 4815 | compare_sections_command (char *args, int from_tty) |
c906108c | 4816 | { |
d01949b6 | 4817 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4818 | asection *s; |
4819 | unsigned long host_crc, target_crc; | |
4820 | extern bfd *exec_bfd; | |
4821 | struct cleanup *old_chain; | |
085dd6e6 JM |
4822 | char *tmp; |
4823 | char *sectdata; | |
ce359b09 | 4824 | const char *sectname; |
d01949b6 | 4825 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4826 | bfd_size_type size; |
4827 | bfd_vma lma; | |
4828 | int matched = 0; | |
4829 | int mismatched = 0; | |
4830 | ||
4831 | if (!exec_bfd) | |
4832 | error ("command cannot be used without an exec file"); | |
4833 | if (!current_target.to_shortname || | |
4834 | strcmp (current_target.to_shortname, "remote") != 0) | |
4835 | error ("command can only be used with remote target"); | |
4836 | ||
c5aa993b | 4837 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4838 | { |
4839 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4840 | continue; /* skip non-loadable section */ |
c906108c | 4841 | |
2c500098 | 4842 | size = bfd_get_section_size (s); |
c906108c | 4843 | if (size == 0) |
c5aa993b | 4844 | continue; /* skip zero-length section */ |
c906108c | 4845 | |
ce359b09 | 4846 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4847 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4848 | continue; /* not the section selected by user */ |
c906108c | 4849 | |
c5aa993b | 4850 | matched = 1; /* do this section */ |
c906108c SS |
4851 | lma = s->lma; |
4852 | /* FIXME: assumes lma can fit into long */ | |
4853 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4854 | putpkt (buf); | |
4855 | ||
4856 | /* be clever; compute the host_crc before waiting for target reply */ | |
4857 | sectdata = xmalloc (size); | |
b8c9b27d | 4858 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4859 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4860 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4861 | ||
d01949b6 | 4862 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 4863 | if (buf[0] == 'E') |
823ca731 AC |
4864 | error ("target memory fault, section %s, range 0x%s -- 0x%s", |
4865 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4866 | if (buf[0] != 'C') |
4867 | error ("remote target does not support this operation"); | |
4868 | ||
4869 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4870 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4871 | ||
d4f3574e SS |
4872 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4873 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4874 | if (host_crc == target_crc) |
4875 | printf_filtered ("matched.\n"); | |
4876 | else | |
c5aa993b JM |
4877 | { |
4878 | printf_filtered ("MIS-MATCHED!\n"); | |
4879 | mismatched++; | |
4880 | } | |
c906108c SS |
4881 | |
4882 | do_cleanups (old_chain); | |
4883 | } | |
4884 | if (mismatched > 0) | |
4885 | warning ("One or more sections of the remote executable does not match\n\ | |
4886 | the loaded file\n"); | |
4887 | if (args && !matched) | |
4888 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4889 | } | |
4890 | ||
1e3ff5ad | 4891 | static LONGEST |
4b8a223f | 4892 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
8aa91c1e | 4893 | const char *annex, void *readbuf, const void *writebuf, |
1e3ff5ad | 4894 | ULONGEST offset, LONGEST len) |
c906108c | 4895 | { |
d01949b6 | 4896 | struct remote_state *rs = get_remote_state (); |
c906108c | 4897 | int i; |
d01949b6 | 4898 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 4899 | char *p2 = &buf2[0]; |
1e3ff5ad | 4900 | char query_type; |
c906108c | 4901 | |
21e3b9b9 DJ |
4902 | /* Handle memory using remote_xfer_memory. */ |
4903 | if (object == TARGET_OBJECT_MEMORY) | |
4904 | { | |
4905 | int xfered; | |
4906 | errno = 0; | |
4907 | ||
4908 | if (writebuf != NULL) | |
4909 | { | |
4910 | void *buffer = xmalloc (len); | |
4911 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4912 | memcpy (buffer, writebuf, len); | |
4913 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4914 | do_cleanups (cleanup); | |
4915 | } | |
4916 | else | |
4917 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4918 | ||
4919 | if (xfered > 0) | |
4920 | return xfered; | |
4921 | else if (xfered == 0 && errno == 0) | |
4922 | return 0; | |
4923 | else | |
4924 | return -1; | |
4925 | } | |
4926 | ||
4b8a223f AC |
4927 | /* Only handle reads. */ |
4928 | if (writebuf != NULL || readbuf == NULL) | |
4929 | return -1; | |
4930 | ||
1e3ff5ad AC |
4931 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4932 | objects!!! Instead specify new query packets. */ | |
4933 | switch (object) | |
c906108c | 4934 | { |
1e3ff5ad AC |
4935 | case TARGET_OBJECT_KOD: |
4936 | query_type = 'K'; | |
4937 | break; | |
4938 | case TARGET_OBJECT_AVR: | |
4939 | query_type = 'R'; | |
4940 | break; | |
802188a7 RM |
4941 | |
4942 | case TARGET_OBJECT_AUXV: | |
4943 | if (remote_protocol_qPart_auxv.support != PACKET_DISABLE) | |
4944 | { | |
4945 | unsigned int total = 0; | |
4946 | while (len > 0) | |
4947 | { | |
4948 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
4949 | snprintf (buf2, rs->remote_packet_size, | |
4950 | "qPart:auxv:read::%s,%s", | |
4951 | phex_nz (offset, sizeof offset), | |
4952 | phex_nz (n, sizeof n)); | |
4953 | i = putpkt (buf2); | |
4954 | if (i < 0) | |
4955 | return total > 0 ? total : i; | |
4956 | buf2[0] = '\0'; | |
4957 | getpkt (buf2, rs->remote_packet_size, 0); | |
4958 | if (packet_ok (buf2, &remote_protocol_qPart_auxv) != PACKET_OK) | |
4959 | return total > 0 ? total : -1; | |
4960 | if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0') | |
4961 | break; /* Got EOF indicator. */ | |
4962 | /* Got some data. */ | |
4963 | i = hex2bin (buf2, readbuf, len); | |
4964 | if (i > 0) | |
4965 | { | |
4966 | readbuf = (void *) ((char *) readbuf + i); | |
4967 | offset += i; | |
4968 | len -= i; | |
4969 | total += i; | |
4970 | } | |
4971 | } | |
4972 | return total; | |
4973 | } | |
4974 | return -1; | |
4975 | ||
1e3ff5ad | 4976 | default: |
c906108c SS |
4977 | return -1; |
4978 | } | |
4979 | ||
4b8a223f | 4980 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 4981 | buffer size. */ |
4b8a223f | 4982 | if (offset == 0 && len == 0) |
1e3ff5ad AC |
4983 | return (rs->remote_packet_size); |
4984 | /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is | |
4985 | not large enough let the caller. */ | |
4986 | if (len < (rs->remote_packet_size)) | |
4987 | return -1; | |
4988 | len = rs->remote_packet_size; | |
4989 | ||
c906108c | 4990 | /* except for querying the minimum buffer size, target must be open */ |
c5aa993b | 4991 | if (!remote_desc) |
c906108c SS |
4992 | error ("remote query is only available after target open"); |
4993 | ||
1e3ff5ad | 4994 | gdb_assert (annex != NULL); |
4b8a223f | 4995 | gdb_assert (readbuf != NULL); |
c906108c SS |
4996 | |
4997 | *p2++ = 'q'; | |
4998 | *p2++ = query_type; | |
4999 | ||
5000 | /* we used one buffer char for the remote protocol q command and another | |
5001 | for the query type. As the remote protocol encapsulation uses 4 chars | |
5002 | plus one extra in case we are debugging (remote_debug), | |
5003 | we have PBUFZIZ - 7 left to pack the query string */ | |
5004 | i = 0; | |
1e3ff5ad | 5005 | while (annex[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c | 5006 | { |
1e3ff5ad AC |
5007 | /* Bad caller may have sent forbidden characters. */ |
5008 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5009 | *p2++ = annex[i]; | |
c906108c SS |
5010 | i++; |
5011 | } | |
1e3ff5ad AC |
5012 | *p2 = '\0'; |
5013 | gdb_assert (annex[i] == '\0'); | |
c906108c SS |
5014 | |
5015 | i = putpkt (buf2); | |
c5aa993b JM |
5016 | if (i < 0) |
5017 | return i; | |
c906108c | 5018 | |
4b8a223f | 5019 | getpkt (readbuf, len, 0); |
c906108c | 5020 | |
4b8a223f | 5021 | return strlen (readbuf); |
c906108c SS |
5022 | } |
5023 | ||
96baa820 JM |
5024 | static void |
5025 | remote_rcmd (char *command, | |
d9fcf2fb | 5026 | struct ui_file *outbuf) |
96baa820 | 5027 | { |
d01949b6 | 5028 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5029 | int i; |
d01949b6 | 5030 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5031 | char *p = buf; |
5032 | ||
5033 | if (!remote_desc) | |
5034 | error ("remote rcmd is only available after target open"); | |
5035 | ||
7be570e7 JM |
5036 | /* Send a NULL command across as an empty command */ |
5037 | if (command == NULL) | |
5038 | command = ""; | |
5039 | ||
96baa820 JM |
5040 | /* The query prefix */ |
5041 | strcpy (buf, "qRcmd,"); | |
5042 | p = strchr (buf, '\0'); | |
5043 | ||
d01949b6 | 5044 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5045 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5046 | ||
5047 | /* Encode the actual command */ | |
30559e10 | 5048 | bin2hex (command, p, 0); |
96baa820 JM |
5049 | |
5050 | if (putpkt (buf) < 0) | |
5051 | error ("Communication problem with target\n"); | |
5052 | ||
5053 | /* get/display the response */ | |
5054 | while (1) | |
5055 | { | |
5056 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
5057 | buf[0] = '\0'; | |
d01949b6 | 5058 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5059 | if (buf[0] == '\0') |
5060 | error ("Target does not support this command\n"); | |
5061 | if (buf[0] == 'O' && buf[1] != 'K') | |
5062 | { | |
5063 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
5064 | continue; | |
5065 | } | |
5066 | if (strcmp (buf, "OK") == 0) | |
5067 | break; | |
7be570e7 JM |
5068 | if (strlen (buf) == 3 && buf[0] == 'E' |
5069 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5070 | { | |
5071 | error ("Protocol error with Rcmd"); | |
5072 | } | |
96baa820 JM |
5073 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5074 | { | |
5075 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5076 | fputc_unfiltered (c, outbuf); | |
5077 | } | |
5078 | break; | |
5079 | } | |
5080 | } | |
5081 | ||
c906108c | 5082 | static void |
fba45db2 | 5083 | packet_command (char *args, int from_tty) |
c906108c | 5084 | { |
d01949b6 AC |
5085 | struct remote_state *rs = get_remote_state (); |
5086 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5087 | |
c5aa993b | 5088 | if (!remote_desc) |
c906108c SS |
5089 | error ("command can only be used with remote target"); |
5090 | ||
c5aa993b | 5091 | if (!args) |
c906108c SS |
5092 | error ("remote-packet command requires packet text as argument"); |
5093 | ||
5094 | puts_filtered ("sending: "); | |
5095 | print_packet (args); | |
5096 | puts_filtered ("\n"); | |
5097 | putpkt (args); | |
5098 | ||
d01949b6 | 5099 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5100 | puts_filtered ("received: "); |
5101 | print_packet (buf); | |
5102 | puts_filtered ("\n"); | |
5103 | } | |
5104 | ||
5105 | #if 0 | |
5106 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
5107 | ||
a14ed312 | 5108 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5109 | |
a14ed312 | 5110 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5111 | |
a14ed312 | 5112 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5113 | |
a14ed312 | 5114 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5115 | |
a14ed312 | 5116 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 5117 | |
a14ed312 | 5118 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5119 | |
a14ed312 | 5120 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5121 | |
a14ed312 | 5122 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5123 | |
a14ed312 | 5124 | static void init_remote_threadtests (void); |
c906108c | 5125 | |
c5aa993b | 5126 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5127 | |
5128 | static void | |
fba45db2 | 5129 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5130 | { |
5131 | int sample_thread = SAMPLE_THREAD; | |
5132 | ||
5133 | printf_filtered ("Remote threadset test\n"); | |
5134 | set_thread (sample_thread, 1); | |
5135 | } | |
5136 | ||
5137 | ||
5138 | static void | |
fba45db2 | 5139 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5140 | { |
5141 | int sample_thread = SAMPLE_THREAD; | |
5142 | ||
39f77062 | 5143 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5144 | printf_filtered ("PASS: Thread alive test\n"); |
5145 | else | |
5146 | printf_filtered ("FAIL: Thread alive test\n"); | |
5147 | } | |
5148 | ||
a14ed312 | 5149 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5150 | |
5151 | void | |
fba45db2 | 5152 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5153 | { |
5154 | char hexid[20]; | |
5155 | ||
5156 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5157 | hexid[16] = 0; | |
5158 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5159 | } | |
5160 | ||
5161 | static void | |
fba45db2 | 5162 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5163 | { |
5164 | int startflag = 1; | |
5165 | threadref nextthread; | |
5166 | int done, result_count; | |
5167 | threadref threadlist[3]; | |
5168 | ||
5169 | printf_filtered ("Remote Threadlist test\n"); | |
5170 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5171 | &result_count, &threadlist[0])) | |
5172 | printf_filtered ("FAIL: threadlist test\n"); | |
5173 | else | |
5174 | { | |
5175 | threadref *scan = threadlist; | |
5176 | threadref *limit = scan + result_count; | |
5177 | ||
5178 | while (scan < limit) | |
5179 | output_threadid (" thread ", scan++); | |
5180 | } | |
5181 | } | |
5182 | ||
5183 | void | |
fba45db2 | 5184 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5185 | { |
5186 | output_threadid ("Threadid: ", &info->threadid); | |
5187 | printf_filtered ("Name: %s\n ", info->shortname); | |
5188 | printf_filtered ("State: %s\n", info->display); | |
5189 | printf_filtered ("other: %s\n\n", info->more_display); | |
5190 | } | |
5191 | ||
5192 | int | |
fba45db2 | 5193 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5194 | { |
5195 | int result; | |
5196 | int set; | |
5197 | struct gdb_ext_thread_info threadinfo; | |
5198 | ||
5199 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5200 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5201 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5202 | display_thread_info (&threadinfo); | |
5203 | return result; | |
5204 | } | |
5205 | ||
5206 | static void | |
fba45db2 | 5207 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5208 | { |
5209 | int athread = SAMPLE_THREAD; | |
5210 | threadref thread; | |
5211 | int set; | |
5212 | ||
5213 | int_to_threadref (&thread, athread); | |
5214 | printf_filtered ("Remote Threadinfo test\n"); | |
5215 | if (!get_and_display_threadinfo (&thread)) | |
5216 | printf_filtered ("FAIL cannot get thread info\n"); | |
5217 | } | |
5218 | ||
5219 | static int | |
fba45db2 | 5220 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5221 | { |
5222 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5223 | return get_and_display_threadinfo (ref); | |
5224 | } | |
5225 | ||
5226 | static void | |
fba45db2 | 5227 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5228 | { |
5229 | printf_filtered ("Remote Threadlist update test\n"); | |
5230 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5231 | } | |
5232 | ||
5233 | static void | |
5234 | init_remote_threadtests (void) | |
5235 | { | |
5236 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5237 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5238 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5239 | "Fetch and display info about one thread"); | |
5240 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5241 | "Test setting to a different thread"); | |
5242 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5243 | "Iterate through updating all remote thread info"); | |
5244 | add_com ("talive", class_obscure, threadalive_test, | |
5245 | " Remote thread alive test "); | |
5246 | } | |
5247 | ||
5248 | #endif /* 0 */ | |
5249 | ||
f3fb8c85 MS |
5250 | /* Convert a thread ID to a string. Returns the string in a static |
5251 | buffer. */ | |
5252 | ||
5253 | static char * | |
39f77062 | 5254 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5255 | { |
5256 | static char buf[30]; | |
5257 | ||
39f77062 | 5258 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5259 | return buf; |
5260 | } | |
5261 | ||
c906108c | 5262 | static void |
fba45db2 | 5263 | init_remote_ops (void) |
c906108c | 5264 | { |
c5aa993b | 5265 | remote_ops.to_shortname = "remote"; |
c906108c | 5266 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5267 | remote_ops.to_doc = |
c906108c | 5268 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5269 | Specify the serial device it is connected to\n\ |
5270 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5271 | remote_ops.to_open = remote_open; |
5272 | remote_ops.to_close = remote_close; | |
c906108c | 5273 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5274 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5275 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5276 | remote_ops.to_wait = remote_wait; |
5277 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5278 | remote_ops.to_store_registers = remote_store_registers; | |
5279 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5280 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5281 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5282 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5283 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5284 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5285 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5286 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5287 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5288 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5289 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5290 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5291 | remote_ops.to_kill = remote_kill; |
5292 | remote_ops.to_load = generic_load; | |
c906108c SS |
5293 | remote_ops.to_mourn_inferior = remote_mourn; |
5294 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5295 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5296 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5297 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5298 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5299 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5300 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5301 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5302 | remote_ops.to_has_all_memory = 1; |
5303 | remote_ops.to_has_memory = 1; | |
5304 | remote_ops.to_has_stack = 1; | |
5305 | remote_ops.to_has_registers = 1; | |
5306 | remote_ops.to_has_execution = 1; | |
5307 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5308 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5309 | } |
5310 | ||
5311 | /* Set up the extended remote vector by making a copy of the standard | |
5312 | remote vector and adding to it. */ | |
5313 | ||
5314 | static void | |
fba45db2 | 5315 | init_extended_remote_ops (void) |
c906108c SS |
5316 | { |
5317 | extended_remote_ops = remote_ops; | |
5318 | ||
0f71a2f6 | 5319 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5320 | extended_remote_ops.to_longname = |
c906108c | 5321 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5322 | extended_remote_ops.to_doc = |
c906108c SS |
5323 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5324 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5325 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5326 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5327 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5328 | } |
5329 | ||
6426a772 JM |
5330 | static int |
5331 | remote_can_async_p (void) | |
5332 | { | |
5333 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5334 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5335 | } |
5336 | ||
5337 | static int | |
5338 | remote_is_async_p (void) | |
5339 | { | |
5340 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5341 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5342 | } |
5343 | ||
2acceee2 JM |
5344 | /* Pass the SERIAL event on and up to the client. One day this code |
5345 | will be able to delay notifying the client of an event until the | |
5346 | point where an entire packet has been received. */ | |
5347 | ||
5348 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5349 | static void *async_client_context; | |
5350 | static serial_event_ftype remote_async_serial_handler; | |
5351 | ||
6426a772 | 5352 | static void |
819cc324 | 5353 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5354 | { |
2acceee2 JM |
5355 | /* Don't propogate error information up to the client. Instead let |
5356 | the client find out about the error by querying the target. */ | |
5357 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5358 | } | |
5359 | ||
5360 | static void | |
5361 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5362 | { | |
ed9a39eb | 5363 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5364 | internal_error (__FILE__, __LINE__, |
5365 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5366 | |
2acceee2 JM |
5367 | if (callback != NULL) |
5368 | { | |
2cd58942 | 5369 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5370 | async_client_callback = callback; |
5371 | async_client_context = context; | |
5372 | } | |
5373 | else | |
2cd58942 | 5374 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5375 | } |
5376 | ||
43ff13b4 JM |
5377 | /* Target async and target extended-async. |
5378 | ||
5379 | This are temporary targets, until it is all tested. Eventually | |
5380 | async support will be incorporated int the usual 'remote' | |
5381 | target. */ | |
5382 | ||
5383 | static void | |
c2d11a7d | 5384 | init_remote_async_ops (void) |
43ff13b4 JM |
5385 | { |
5386 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5387 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5388 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5389 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5390 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5391 | remote_async_ops.to_open = remote_async_open; |
5392 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5393 | remote_async_ops.to_detach = remote_detach; |
5394 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5395 | remote_async_ops.to_resume = remote_async_resume; |
5396 | remote_async_ops.to_wait = remote_async_wait; | |
5397 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5398 | remote_async_ops.to_store_registers = remote_store_registers; | |
5399 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5400 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5401 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5402 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5403 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5404 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5405 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5406 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5407 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5408 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5409 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5410 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5411 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5412 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5413 | remote_async_ops.to_kill = remote_async_kill; |
5414 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5415 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5416 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5417 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5418 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5419 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5420 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5421 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5422 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5423 | remote_async_ops.to_stratum = process_stratum; |
5424 | remote_async_ops.to_has_all_memory = 1; | |
5425 | remote_async_ops.to_has_memory = 1; | |
5426 | remote_async_ops.to_has_stack = 1; | |
5427 | remote_async_ops.to_has_registers = 1; | |
5428 | remote_async_ops.to_has_execution = 1; | |
5429 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5430 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5431 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5432 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5433 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5434 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5435 | } |
5436 | ||
5437 | /* Set up the async extended remote vector by making a copy of the standard | |
5438 | remote vector and adding to it. */ | |
5439 | ||
5440 | static void | |
c2d11a7d | 5441 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5442 | { |
5443 | extended_async_remote_ops = remote_async_ops; | |
5444 | ||
5445 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5446 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5447 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5448 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5449 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5450 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5451 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5452 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5453 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5454 | } | |
5455 | ||
5a2468f5 | 5456 | static void |
c2d11a7d | 5457 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5458 | { |
5a2468f5 JM |
5459 | } |
5460 | ||
d471ea57 AC |
5461 | static void |
5462 | show_remote_cmd (char *args, int from_tty) | |
5463 | { | |
e9e68a56 AC |
5464 | /* FIXME: cagney/2002-06-15: This function should iterate over |
5465 | remote_show_cmdlist for a list of sub commands to show. */ | |
5466 | show_remote_protocol_Z_packet_cmd (args, from_tty, NULL); | |
e9e68a56 | 5467 | show_remote_protocol_P_packet_cmd (args, from_tty, NULL); |
b96ec7ac | 5468 | show_remote_protocol_p_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 5469 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL); |
506fb367 | 5470 | show_remote_protocol_vcont_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 5471 | show_remote_protocol_binary_download_cmd (args, from_tty, NULL); |
802188a7 | 5472 | show_remote_protocol_qPart_auxv_packet_cmd (args, from_tty, NULL); |
d471ea57 | 5473 | } |
5a2468f5 | 5474 | |
0f71a2f6 | 5475 | static void |
fba45db2 | 5476 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5477 | { |
d696208f | 5478 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5479 | } |
5480 | ||
dc8acb97 MS |
5481 | /* Saved pointer to previous owner of the new_objfile event. */ |
5482 | static void (*remote_new_objfile_chain) (struct objfile *); | |
5483 | ||
5484 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
5485 | static void | |
5486 | remote_new_objfile (struct objfile *objfile) | |
5487 | { | |
5488 | if (remote_desc != 0) /* Have a remote connection */ | |
5489 | { | |
5490 | remote_check_symbols (objfile); | |
5491 | } | |
5492 | /* Call predecessor on chain, if any. */ | |
5493 | if (remote_new_objfile_chain != 0 && | |
5494 | remote_desc == 0) | |
5495 | remote_new_objfile_chain (objfile); | |
5496 | } | |
5497 | ||
c906108c | 5498 | void |
fba45db2 | 5499 | _initialize_remote (void) |
c906108c | 5500 | { |
5a2468f5 JM |
5501 | static struct cmd_list_element *remote_set_cmdlist; |
5502 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5503 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5504 | |
0f71a2f6 | 5505 | /* architecture specific data */ |
030f20e1 | 5506 | remote_gdbarch_data_handle = gdbarch_data_register_post_init (init_remote_state); |
d01949b6 AC |
5507 | |
5508 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5509 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5510 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5511 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5512 | |
c906108c SS |
5513 | init_remote_ops (); |
5514 | add_target (&remote_ops); | |
5515 | ||
5516 | init_extended_remote_ops (); | |
5517 | add_target (&extended_remote_ops); | |
cce74817 | 5518 | |
43ff13b4 JM |
5519 | init_remote_async_ops (); |
5520 | add_target (&remote_async_ops); | |
5521 | ||
5522 | init_extended_async_remote_ops (); | |
5523 | add_target (&extended_async_remote_ops); | |
5524 | ||
dc8acb97 | 5525 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5526 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5527 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5528 | |
c906108c SS |
5529 | #if 0 |
5530 | init_remote_threadtests (); | |
5531 | #endif | |
5532 | ||
d471ea57 AC |
5533 | /* set/show remote ... */ |
5534 | ||
5a2468f5 JM |
5535 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5536 | Remote protocol specific variables\n\ | |
5537 | Configure various remote-protocol specific variables such as\n\ | |
5538 | the packets being used", | |
cff3e48b | 5539 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5540 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5541 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5542 | Remote protocol specific variables\n\ |
5543 | Configure various remote-protocol specific variables such as\n\ | |
5544 | the packets being used", | |
cff3e48b | 5545 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5546 | 0/*allow-unknown*/, &showlist); |
5547 | ||
c5aa993b | 5548 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5549 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5550 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5551 | &cmdlist); |
5552 | ||
5553 | add_cmd ("packet", class_maintenance, packet_command, | |
5554 | "Send an arbitrary packet to a remote target.\n\ | |
5555 | maintenance packet TEXT\n\ | |
5556 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5557 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5558 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5559 | terminating `#' character and checksum.", | |
5560 | &maintenancelist); | |
5561 | ||
3b64bf98 AC |
5562 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, "\ |
5563 | Set whether to send break if interrupted.", "\ | |
5564 | Show whether to send break if interrupted.", "\ | |
5565 | If set, a break, instead of a cntrl-c, is sent to the remote target.", "\ | |
5566 | Whether to send break if interrupted is %s.", | |
e707bbc2 AC |
5567 | NULL, NULL, |
5568 | &setlist, &showlist); | |
c906108c | 5569 | |
11cf8741 JM |
5570 | /* Install commands for configuring memory read/write packets. */ |
5571 | ||
5572 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5573 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5574 | &setlist); | |
4ad5b0f7 | 5575 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5576 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5577 | &showlist); | |
5578 | add_cmd ("memory-write-packet-size", no_class, | |
5579 | set_memory_write_packet_size, | |
5580 | "Set the maximum number of bytes per memory-write packet.\n" | |
5581 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5582 | "default packet size. The actual limit is further reduced\n" | |
5583 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5584 | "further restriction and ``limit'' to enable that restriction\n", | |
5585 | &remote_set_cmdlist); | |
5586 | add_cmd ("memory-read-packet-size", no_class, | |
5587 | set_memory_read_packet_size, | |
5588 | "Set the maximum number of bytes per memory-read packet.\n" | |
5589 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5590 | "default packet size. The actual limit is further reduced\n" | |
5591 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5592 | "further restriction and ``limit'' to enable that restriction\n", | |
5593 | &remote_set_cmdlist); | |
5594 | add_cmd ("memory-write-packet-size", no_class, | |
5595 | show_memory_write_packet_size, | |
5596 | "Show the maximum number of bytes per memory-write packet.\n", | |
5597 | &remote_show_cmdlist); | |
5598 | add_cmd ("memory-read-packet-size", no_class, | |
5599 | show_memory_read_packet_size, | |
5600 | "Show the maximum number of bytes per memory-read packet.\n", | |
5601 | &remote_show_cmdlist); | |
c906108c | 5602 | |
b3f42336 AC |
5603 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
5604 | &remote_hw_watchpoint_limit, "\ | |
3b64bf98 AC |
5605 | Set the maximum number of target hardware watchpoints.", "\ |
5606 | Show the maximum number of target hardware watchpoints.", "\ | |
501eef12 | 5607 | Specify a negative limit for unlimited.", "\ |
3b64bf98 | 5608 | The maximum number of target hardware watchpoints is %s.", |
b3f42336 AC |
5609 | NULL, NULL, |
5610 | &remote_set_cmdlist, &remote_show_cmdlist); | |
5611 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
5612 | &remote_hw_breakpoint_limit, "\ | |
3b64bf98 AC |
5613 | Set the maximum number of target hardware breakpoints.", "\ |
5614 | Show the maximum number of target hardware breakpoints.", "\ | |
501eef12 | 5615 | Specify a negative limit for unlimited.", "\ |
3b64bf98 | 5616 | The maximum number of target hardware breakpoints is %s.", |
b3f42336 AC |
5617 | NULL, NULL, |
5618 | &remote_set_cmdlist, &remote_show_cmdlist); | |
501eef12 | 5619 | |
cb1a6d5f | 5620 | deprecated_add_show_from_set |
c906108c | 5621 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5622 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5623 | "Set the maximum size of the address (in bits) \ |
5624 | in a memory packet.\n", | |
5625 | &setlist), | |
c5aa993b | 5626 | &showlist); |
c906108c | 5627 | |
96baa820 JM |
5628 | add_packet_config_cmd (&remote_protocol_binary_download, |
5629 | "X", "binary-download", | |
5630 | set_remote_protocol_binary_download_cmd, | |
5631 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5632 | &remote_set_cmdlist, &remote_show_cmdlist, |
5633 | 1); | |
96baa820 JM |
5634 | #if 0 |
5635 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5636 | compatibility. */ | |
cb1a6d5f | 5637 | deprecated_add_show_from_set |
b83266a0 SS |
5638 | (add_set_cmd ("remotebinarydownload", no_class, |
5639 | var_boolean, (char *) &remote_binary_download, | |
5640 | "Set binary downloads.\n", &setlist), | |
5641 | &showlist); | |
96baa820 | 5642 | #endif |
0f71a2f6 | 5643 | |
506fb367 DJ |
5644 | add_packet_config_cmd (&remote_protocol_vcont, |
5645 | "vCont", "verbose-resume", | |
5646 | set_remote_protocol_vcont_packet_cmd, | |
5647 | show_remote_protocol_vcont_packet_cmd, | |
5648 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5649 | 0); | |
5650 | ||
dc8acb97 MS |
5651 | add_packet_config_cmd (&remote_protocol_qSymbol, |
5652 | "qSymbol", "symbol-lookup", | |
5653 | set_remote_protocol_qSymbol_packet_cmd, | |
5654 | show_remote_protocol_qSymbol_packet_cmd, | |
5655 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5656 | 0); | |
5657 | ||
d471ea57 AC |
5658 | add_packet_config_cmd (&remote_protocol_P, |
5659 | "P", "set-register", | |
5a2468f5 JM |
5660 | set_remote_protocol_P_packet_cmd, |
5661 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5662 | &remote_set_cmdlist, &remote_show_cmdlist, |
5663 | 1); | |
5664 | ||
b96ec7ac AC |
5665 | add_packet_config_cmd (&remote_protocol_p, |
5666 | "p", "fetch-register", | |
5667 | set_remote_protocol_p_packet_cmd, | |
5668 | show_remote_protocol_p_packet_cmd, | |
5669 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5670 | 1); | |
5671 | ||
d471ea57 AC |
5672 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], |
5673 | "Z0", "software-breakpoint", | |
5674 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5675 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5676 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5677 | 0); | |
5678 | ||
5679 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5680 | "Z1", "hardware-breakpoint", | |
5681 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5682 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5683 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5684 | 0); | |
5685 | ||
5686 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5687 | "Z2", "write-watchpoint", | |
5688 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5689 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5690 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5691 | 0); | |
5692 | ||
5693 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5694 | "Z3", "read-watchpoint", | |
5695 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5696 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5697 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5698 | 0); | |
5699 | ||
5700 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5701 | "Z4", "access-watchpoint", | |
5702 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5703 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5704 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5705 | 0); | |
5706 | ||
802188a7 RM |
5707 | add_packet_config_cmd (&remote_protocol_qPart_auxv, |
5708 | "qPart_auxv", "read-aux-vector", | |
5709 | set_remote_protocol_qPart_auxv_packet_cmd, | |
5710 | show_remote_protocol_qPart_auxv_packet_cmd, | |
5711 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5712 | 0); | |
5713 | ||
d471ea57 | 5714 | /* Keep the old ``set remote Z-packet ...'' working. */ |
e9e68a56 AC |
5715 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
5716 | &remote_Z_packet_detect, "\ | |
3b64bf98 AC |
5717 | Set use of remote protocol `Z' packets", "\ |
5718 | Show use of remote protocol `Z' packets ", "\ | |
5719 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ | |
5720 | packets.", "\ | |
5721 | Use of remote protocol `Z' packets is %s", | |
e9e68a56 AC |
5722 | set_remote_protocol_Z_packet_cmd, |
5723 | show_remote_protocol_Z_packet_cmd, | |
5724 | &remote_set_cmdlist, &remote_show_cmdlist); | |
449092f6 CV |
5725 | |
5726 | /* Eventually initialize fileio. See fileio.c */ | |
5727 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5728 | } |