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" | |
33 | #include "target.h" | |
c5aa993b | 34 | /*#include "terminal.h" */ |
c906108c SS |
35 | #include "gdbcmd.h" |
36 | #include "objfiles.h" | |
37 | #include "gdb-stabs.h" | |
38 | #include "gdbthread.h" | |
c2c6d25f | 39 | #include "remote.h" |
4e052eda | 40 | #include "regcache.h" |
fd0407d6 | 41 | #include "value.h" |
1ff9c3d6 | 42 | #include "gdb_assert.h" |
c906108c | 43 | |
7a292a7a | 44 | #include <ctype.h> |
9846de1b | 45 | #include <sys/time.h> |
c906108c | 46 | |
43ff13b4 | 47 | #include "event-loop.h" |
c2c6d25f | 48 | #include "event-top.h" |
2acceee2 | 49 | #include "inf-loop.h" |
43ff13b4 | 50 | |
c906108c SS |
51 | #include <signal.h> |
52 | #include "serial.h" | |
53 | ||
6240bebf MS |
54 | #include "gdbcore.h" /* for exec_bfd */ |
55 | ||
449092f6 CV |
56 | #include "remote-fileio.h" |
57 | ||
c906108c | 58 | /* Prototypes for local functions */ |
6426a772 JM |
59 | static void cleanup_sigint_signal_handler (void *dummy); |
60 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 61 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 62 | |
a14ed312 KB |
63 | static void handle_remote_sigint (int); |
64 | static void handle_remote_sigint_twice (int); | |
65 | static void async_remote_interrupt (gdb_client_data); | |
66 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 67 | |
a14ed312 | 68 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 69 | |
a14ed312 | 70 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 71 | |
a14ed312 KB |
72 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
73 | int len, int should_write, | |
29e57380 | 74 | struct mem_attrib *attrib, |
a14ed312 | 75 | struct target_ops *target); |
c906108c | 76 | |
a14ed312 | 77 | static void remote_prepare_to_store (void); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_fetch_registers (int regno); |
c906108c | 80 | |
39f77062 KB |
81 | static void remote_resume (ptid_t ptid, int step, |
82 | enum target_signal siggnal); | |
83 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 84 | enum target_signal siggnal); |
36918e70 | 85 | static int remote_start_remote (struct ui_out *uiout, void *dummy); |
c906108c | 86 | |
a14ed312 KB |
87 | static void remote_open (char *name, int from_tty); |
88 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 89 | |
a14ed312 KB |
90 | static void extended_remote_open (char *name, int from_tty); |
91 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 92 | |
92d1e331 DJ |
93 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
94 | int async_p); | |
c906108c | 95 | |
a14ed312 | 96 | static void remote_close (int quitting); |
c906108c | 97 | |
a14ed312 | 98 | static void remote_store_registers (int regno); |
c906108c | 99 | |
a14ed312 KB |
100 | static void remote_mourn (void); |
101 | static void remote_async_mourn (void); | |
c906108c | 102 | |
a14ed312 | 103 | static void extended_remote_restart (void); |
c906108c | 104 | |
a14ed312 | 105 | static void extended_remote_mourn (void); |
c906108c | 106 | |
a14ed312 | 107 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 108 | |
c2d11a7d | 109 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 110 | |
a14ed312 | 111 | static int readchar (int timeout); |
c906108c | 112 | |
39f77062 KB |
113 | static ptid_t remote_wait (ptid_t ptid, |
114 | struct target_waitstatus *status); | |
115 | static ptid_t remote_async_wait (ptid_t ptid, | |
116 | struct target_waitstatus *status); | |
c906108c | 117 | |
a14ed312 KB |
118 | static void remote_kill (void); |
119 | static void remote_async_kill (void); | |
c906108c | 120 | |
a14ed312 | 121 | static int tohex (int nib); |
c906108c | 122 | |
a14ed312 | 123 | static void remote_detach (char *args, int from_tty); |
c906108c | 124 | |
a14ed312 | 125 | static void remote_interrupt (int signo); |
c906108c | 126 | |
a14ed312 | 127 | static void remote_interrupt_twice (int signo); |
7a292a7a | 128 | |
a14ed312 | 129 | static void interrupt_query (void); |
c906108c | 130 | |
a14ed312 | 131 | static void set_thread (int, int); |
c906108c | 132 | |
39f77062 | 133 | static int remote_thread_alive (ptid_t); |
c906108c | 134 | |
a14ed312 | 135 | static void get_offsets (void); |
c906108c | 136 | |
c2d11a7d | 137 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 138 | |
a14ed312 | 139 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 140 | |
a14ed312 | 141 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 142 | |
a14ed312 | 143 | static int hexnumlen (ULONGEST num); |
c906108c | 144 | |
a14ed312 | 145 | static void init_remote_ops (void); |
c906108c | 146 | |
a14ed312 | 147 | static void init_extended_remote_ops (void); |
c906108c | 148 | |
a14ed312 | 149 | static void remote_stop (void); |
c906108c | 150 | |
a14ed312 | 151 | static int ishex (int ch, int *val); |
c906108c | 152 | |
a14ed312 | 153 | static int stubhex (int ch); |
c906108c | 154 | |
a14ed312 | 155 | static int hexnumstr (char *, ULONGEST); |
c906108c | 156 | |
a14ed312 | 157 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 158 | |
a14ed312 | 159 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 160 | |
a14ed312 | 161 | static void print_packet (char *); |
c906108c | 162 | |
a14ed312 | 163 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 164 | |
a14ed312 | 165 | static void compare_sections_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void packet_command (char *, int); |
c906108c | 168 | |
a14ed312 | 169 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 170 | |
39f77062 | 171 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 172 | |
a14ed312 | 173 | static void remote_find_new_threads (void); |
c906108c | 174 | |
a14ed312 | 175 | static void record_currthread (int currthread); |
c906108c | 176 | |
30559e10 | 177 | static int fromhex (int a); |
c906108c | 178 | |
dc8acb97 | 179 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 180 | |
dc8acb97 | 181 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 182 | |
a14ed312 | 183 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 184 | |
a14ed312 | 185 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 186 | |
5a2468f5 | 187 | struct packet_config; |
5a2468f5 | 188 | |
a14ed312 | 189 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 190 | |
d471ea57 | 191 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 192 | |
a14ed312 | 193 | void _initialize_remote (void); |
c906108c | 194 | |
694f61fb | 195 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
196 | target is open()ed, remote.c should create a per-target description |
197 | of the remote protocol using that target's architecture. | |
ce2826aa | 198 | Unfortunately, the target stack doesn't include local state. For |
d01949b6 AC |
199 | the moment keep the information in the target's architecture |
200 | object. Sigh.. */ | |
201 | ||
ad10f812 AC |
202 | struct packet_reg |
203 | { | |
204 | long offset; /* Offset into G packet. */ | |
205 | long regnum; /* GDB's internal register number. */ | |
206 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 207 | int in_g_packet; /* Always part of G packet. */ |
3acba339 | 208 | /* long size in bytes; == register_size (current_gdbarch, regnum); at present. */ |
ad10f812 AC |
209 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
210 | }; | |
211 | ||
d01949b6 AC |
212 | struct remote_state |
213 | { | |
ad10f812 AC |
214 | /* Description of the remote protocol registers. */ |
215 | long sizeof_g_packet; | |
b323314b AC |
216 | |
217 | /* Description of the remote protocol registers indexed by REGNUM | |
218 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
219 | struct packet_reg *regs; | |
ad10f812 | 220 | |
d01949b6 AC |
221 | /* This is the size (in chars) of the first response to the ``g'' |
222 | packet. It is used as a heuristic when determining the maximum | |
223 | size of memory-read and memory-write packets. A target will | |
224 | typically only reserve a buffer large enough to hold the ``g'' | |
225 | packet. The size does not include packet overhead (headers and | |
226 | trailers). */ | |
227 | long actual_register_packet_size; | |
228 | ||
229 | /* This is the maximum size (in chars) of a non read/write packet. | |
230 | It is also used as a cap on the size of read/write packets. */ | |
231 | long remote_packet_size; | |
232 | }; | |
233 | ||
3c3bea1c | 234 | |
d01949b6 AC |
235 | /* Handle for retreving the remote protocol data from gdbarch. */ |
236 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
237 | ||
238 | static struct remote_state * | |
5ae5f592 | 239 | get_remote_state (void) |
d01949b6 | 240 | { |
451fbdda | 241 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
242 | } |
243 | ||
244 | static void * | |
245 | init_remote_state (struct gdbarch *gdbarch) | |
246 | { | |
247 | int regnum; | |
e5e78edc | 248 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state); |
d01949b6 | 249 | |
f42accbe AC |
250 | if (deprecated_register_bytes () != 0) |
251 | rs->sizeof_g_packet = deprecated_register_bytes (); | |
7d58c67d TR |
252 | else |
253 | rs->sizeof_g_packet = 0; | |
ad10f812 | 254 | |
b323314b | 255 | /* Assume a 1:1 regnum<->pnum table. */ |
e5e78edc AC |
256 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
257 | struct packet_reg); | |
b323314b | 258 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 259 | { |
b323314b AC |
260 | struct packet_reg *r = &rs->regs[regnum]; |
261 | r->pnum = regnum; | |
262 | r->regnum = regnum; | |
62700349 | 263 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 264 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 265 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d TR |
266 | |
267 | /* Compute packet size by accumulating the size of all registers. */ | |
f42accbe | 268 | if (deprecated_register_bytes () == 0) |
7d58c67d | 269 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); |
ad10f812 AC |
270 | } |
271 | ||
d01949b6 AC |
272 | /* Default maximum number of characters in a packet body. Many |
273 | remote stubs have a hardwired buffer size of 400 bytes | |
274 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
275 | as the maximum packet-size to ensure that the packet and an extra | |
276 | NUL character can always fit in the buffer. This stops GDB | |
277 | trashing stubs that try to squeeze an extra NUL into what is | |
278 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
279 | rs->remote_packet_size = 400 - 1; | |
280 | ||
ad10f812 AC |
281 | /* Should rs->sizeof_g_packet needs more space than the |
282 | default, adjust the size accordingly. Remember that each byte is | |
283 | encoded as two characters. 32 is the overhead for the packet | |
284 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 AC |
285 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
286 | little. */ | |
ad10f812 AC |
287 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
288 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
802188a7 | 289 | |
d01949b6 AC |
290 | /* This one is filled in when a ``g'' packet is received. */ |
291 | rs->actual_register_packet_size = 0; | |
292 | ||
293 | return rs; | |
294 | } | |
295 | ||
ad10f812 AC |
296 | static struct packet_reg * |
297 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
298 | { | |
b323314b AC |
299 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
300 | return NULL; | |
301 | else | |
ad10f812 | 302 | { |
b323314b AC |
303 | struct packet_reg *r = &rs->regs[regnum]; |
304 | gdb_assert (r->regnum == regnum); | |
305 | return r; | |
ad10f812 | 306 | } |
ad10f812 AC |
307 | } |
308 | ||
309 | static struct packet_reg * | |
310 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
311 | { | |
b323314b AC |
312 | int i; |
313 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 314 | { |
b323314b AC |
315 | struct packet_reg *r = &rs->regs[i]; |
316 | if (r->pnum == pnum) | |
317 | return r; | |
ad10f812 AC |
318 | } |
319 | return NULL; | |
d01949b6 AC |
320 | } |
321 | ||
3c3bea1c GS |
322 | /* FIXME: graces/2002-08-08: These variables should eventually be |
323 | bound to an instance of the target object (as in gdbarch-tdep()), | |
324 | when such a thing exists. */ | |
325 | ||
326 | /* This is set to the data address of the access causing the target | |
327 | to stop for a watchpoint. */ | |
328 | static CORE_ADDR remote_watch_data_address; | |
329 | ||
330 | /* This is non-zero if taregt stopped for a watchpoint. */ | |
331 | static int remote_stopped_by_watchpoint_p; | |
332 | ||
c906108c SS |
333 | |
334 | static struct target_ops remote_ops; | |
335 | ||
336 | static struct target_ops extended_remote_ops; | |
337 | ||
43ff13b4 JM |
338 | /* Temporary target ops. Just like the remote_ops and |
339 | extended_remote_ops, but with asynchronous support. */ | |
340 | static struct target_ops remote_async_ops; | |
341 | ||
342 | static struct target_ops extended_async_remote_ops; | |
343 | ||
6426a772 JM |
344 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
345 | ``forever'' still use the normal timeout mechanism. This is | |
346 | currently used by the ASYNC code to guarentee that target reads | |
347 | during the initial connect always time-out. Once getpkt has been | |
348 | modified to return a timeout indication and, in turn | |
349 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
350 | this can go away. */ | |
351 | static int wait_forever_enabled_p = 1; | |
352 | ||
353 | ||
c906108c SS |
354 | /* This variable chooses whether to send a ^C or a break when the user |
355 | requests program interruption. Although ^C is usually what remote | |
356 | systems expect, and that is the default here, sometimes a break is | |
357 | preferable instead. */ | |
358 | ||
359 | static int remote_break; | |
360 | ||
c906108c SS |
361 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
362 | remote_open knows that we don't have a file open when the program | |
363 | starts. */ | |
819cc324 | 364 | static struct serial *remote_desc = NULL; |
c906108c | 365 | |
c906108c SS |
366 | /* This variable sets the number of bits in an address that are to be |
367 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
368 | leading zeros, the entire address would be sent. This variable | |
369 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
370 | initial implementation of remote.c restricted the address sent in | |
371 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
372 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
373 | address was never sent. Since fixing this bug may cause a break in | |
374 | some remote targets this variable is principly provided to | |
375 | facilitate backward compatibility. */ | |
376 | ||
377 | static int remote_address_size; | |
378 | ||
6426a772 JM |
379 | /* Tempoary to track who currently owns the terminal. See |
380 | target_async_terminal_* for more details. */ | |
381 | ||
382 | static int remote_async_terminal_ours_p; | |
383 | ||
11cf8741 | 384 | \f |
11cf8741 | 385 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
386 | memory read/write packet. MIN ((rs->remote_packet_size), |
387 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
388 | values (fifo overruns, et.al.) and some users need larger values | |
389 | (speed up transfers). The variables ``preferred_*'' (the user | |
390 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
391 | (Positive - a soft limit, negative - a hard limit). */ | |
11cf8741 JM |
392 | |
393 | struct memory_packet_config | |
394 | { | |
395 | char *name; | |
396 | long size; | |
397 | int fixed_p; | |
398 | }; | |
399 | ||
400 | /* Compute the current size of a read/write packet. Since this makes | |
401 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
402 | ||
403 | static long | |
404 | get_memory_packet_size (struct memory_packet_config *config) | |
405 | { | |
d01949b6 | 406 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
407 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
408 | law?) that some hosts don't cope very well with large alloca() | |
409 | calls. Eventually the alloca() code will be replaced by calls to | |
410 | xmalloc() and make_cleanups() allowing this restriction to either | |
411 | be lifted or removed. */ | |
412 | #ifndef MAX_REMOTE_PACKET_SIZE | |
413 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
414 | #endif | |
415 | /* NOTE: 16 is just chosen at random. */ | |
416 | #ifndef MIN_REMOTE_PACKET_SIZE | |
417 | #define MIN_REMOTE_PACKET_SIZE 16 | |
418 | #endif | |
419 | long what_they_get; | |
420 | if (config->fixed_p) | |
421 | { | |
422 | if (config->size <= 0) | |
423 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
424 | else | |
425 | what_they_get = config->size; | |
426 | } | |
427 | else | |
428 | { | |
d01949b6 | 429 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
430 | /* Limit the packet to the size specified by the user. */ |
431 | if (config->size > 0 | |
432 | && what_they_get > config->size) | |
433 | what_they_get = config->size; | |
434 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
435 | if ((rs->actual_register_packet_size) > 0 |
436 | && what_they_get > (rs->actual_register_packet_size)) | |
437 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
438 | } |
439 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
440 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
441 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
442 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
443 | return what_they_get; | |
444 | } | |
445 | ||
446 | /* Update the size of a read/write packet. If they user wants | |
447 | something really big then do a sanity check. */ | |
448 | ||
449 | static void | |
450 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
451 | { | |
452 | int fixed_p = config->fixed_p; | |
453 | long size = config->size; | |
454 | if (args == NULL) | |
455 | error ("Argument required (integer, `fixed' or `limited')."); | |
456 | else if (strcmp (args, "hard") == 0 | |
457 | || strcmp (args, "fixed") == 0) | |
458 | fixed_p = 1; | |
459 | else if (strcmp (args, "soft") == 0 | |
460 | || strcmp (args, "limit") == 0) | |
461 | fixed_p = 0; | |
462 | else | |
463 | { | |
464 | char *end; | |
465 | size = strtoul (args, &end, 0); | |
466 | if (args == end) | |
467 | error ("Invalid %s (bad syntax).", config->name); | |
468 | #if 0 | |
469 | /* Instead of explicitly capping the size of a packet to | |
470 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
471 | instead allowed to set the size to something arbitrarily | |
472 | large. */ | |
473 | if (size > MAX_REMOTE_PACKET_SIZE) | |
474 | error ("Invalid %s (too large).", config->name); | |
475 | #endif | |
476 | } | |
477 | /* Extra checks? */ | |
478 | if (fixed_p && !config->fixed_p) | |
479 | { | |
480 | if (! query ("The target may not be able to correctly handle a %s\n" | |
481 | "of %ld bytes. Change the packet size? ", | |
482 | config->name, size)) | |
483 | error ("Packet size not changed."); | |
484 | } | |
485 | /* Update the config. */ | |
486 | config->fixed_p = fixed_p; | |
487 | config->size = size; | |
488 | } | |
489 | ||
490 | static void | |
491 | show_memory_packet_size (struct memory_packet_config *config) | |
492 | { | |
493 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
494 | if (config->fixed_p) | |
495 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
496 | get_memory_packet_size (config)); | |
497 | else | |
498 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
499 | get_memory_packet_size (config)); | |
500 | } | |
501 | ||
502 | static struct memory_packet_config memory_write_packet_config = | |
503 | { | |
504 | "memory-write-packet-size", | |
505 | }; | |
506 | ||
507 | static void | |
508 | set_memory_write_packet_size (char *args, int from_tty) | |
509 | { | |
510 | set_memory_packet_size (args, &memory_write_packet_config); | |
511 | } | |
512 | ||
513 | static void | |
514 | show_memory_write_packet_size (char *args, int from_tty) | |
515 | { | |
516 | show_memory_packet_size (&memory_write_packet_config); | |
517 | } | |
518 | ||
519 | static long | |
520 | get_memory_write_packet_size (void) | |
521 | { | |
522 | return get_memory_packet_size (&memory_write_packet_config); | |
523 | } | |
524 | ||
525 | static struct memory_packet_config memory_read_packet_config = | |
526 | { | |
527 | "memory-read-packet-size", | |
528 | }; | |
529 | ||
530 | static void | |
531 | set_memory_read_packet_size (char *args, int from_tty) | |
532 | { | |
533 | set_memory_packet_size (args, &memory_read_packet_config); | |
534 | } | |
535 | ||
536 | static void | |
537 | show_memory_read_packet_size (char *args, int from_tty) | |
538 | { | |
539 | show_memory_packet_size (&memory_read_packet_config); | |
540 | } | |
541 | ||
542 | static long | |
543 | get_memory_read_packet_size (void) | |
544 | { | |
d01949b6 | 545 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
546 | long size = get_memory_packet_size (&memory_read_packet_config); |
547 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
548 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
549 | increased beyond (rs->remote_packet_size). */ |
550 | if (size > (rs->remote_packet_size)) | |
551 | size = (rs->remote_packet_size); | |
11cf8741 JM |
552 | return size; |
553 | } | |
554 | ||
11cf8741 | 555 | \f |
5a2468f5 JM |
556 | /* Generic configuration support for packets the stub optionally |
557 | supports. Allows the user to specify the use of the packet as well | |
558 | as allowing GDB to auto-detect support in the remote stub. */ | |
559 | ||
560 | enum packet_support | |
561 | { | |
562 | PACKET_SUPPORT_UNKNOWN = 0, | |
563 | PACKET_ENABLE, | |
564 | PACKET_DISABLE | |
565 | }; | |
566 | ||
5a2468f5 JM |
567 | struct packet_config |
568 | { | |
5a2468f5 JM |
569 | char *name; |
570 | char *title; | |
7f19b9a2 | 571 | enum auto_boolean detect; |
5a2468f5 JM |
572 | enum packet_support support; |
573 | }; | |
574 | ||
d471ea57 AC |
575 | /* Analyze a packet's return value and update the packet config |
576 | accordingly. */ | |
577 | ||
578 | enum packet_result | |
579 | { | |
580 | PACKET_ERROR, | |
581 | PACKET_OK, | |
582 | PACKET_UNKNOWN | |
583 | }; | |
584 | ||
5a2468f5 | 585 | static void |
d471ea57 | 586 | update_packet_config (struct packet_config *config) |
5a2468f5 | 587 | { |
d471ea57 AC |
588 | switch (config->detect) |
589 | { | |
7f19b9a2 | 590 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
591 | config->support = PACKET_ENABLE; |
592 | break; | |
7f19b9a2 | 593 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
594 | config->support = PACKET_DISABLE; |
595 | break; | |
7f19b9a2 | 596 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
597 | config->support = PACKET_SUPPORT_UNKNOWN; |
598 | break; | |
599 | } | |
5a2468f5 JM |
600 | } |
601 | ||
602 | static void | |
fba45db2 | 603 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
604 | { |
605 | char *support = "internal-error"; | |
606 | switch (config->support) | |
607 | { | |
608 | case PACKET_ENABLE: | |
609 | support = "enabled"; | |
610 | break; | |
611 | case PACKET_DISABLE: | |
612 | support = "disabled"; | |
613 | break; | |
614 | case PACKET_SUPPORT_UNKNOWN: | |
615 | support = "unknown"; | |
616 | break; | |
617 | } | |
618 | switch (config->detect) | |
619 | { | |
7f19b9a2 | 620 | case AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
621 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
622 | config->name, config->title, support); | |
623 | break; | |
7f19b9a2 AC |
624 | case AUTO_BOOLEAN_TRUE: |
625 | case AUTO_BOOLEAN_FALSE: | |
8e248173 | 626 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", |
5a2468f5 | 627 | config->name, config->title, support); |
8e248173 | 628 | break; |
5a2468f5 JM |
629 | } |
630 | } | |
631 | ||
632 | static void | |
d471ea57 AC |
633 | add_packet_config_cmd (struct packet_config *config, |
634 | char *name, | |
635 | char *title, | |
e9e68a56 AC |
636 | cmd_sfunc_ftype *set_func, |
637 | cmd_sfunc_ftype *show_func, | |
d471ea57 AC |
638 | struct cmd_list_element **set_remote_list, |
639 | struct cmd_list_element **show_remote_list, | |
640 | int legacy) | |
641 | { | |
642 | struct cmd_list_element *set_cmd; | |
643 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
644 | char *set_doc; |
645 | char *show_doc; | |
3b64bf98 AC |
646 | char *help_doc; |
647 | char *print; | |
d471ea57 | 648 | char *cmd_name; |
5a2468f5 JM |
649 | config->name = name; |
650 | config->title = title; | |
7f19b9a2 | 651 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 652 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
653 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
654 | name, title); | |
655 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
656 | name, title); | |
3b64bf98 AC |
657 | print = xstrprintf ("Current use of remote protocol `%s' (%s) is %%s", |
658 | name, title); | |
d471ea57 | 659 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 660 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 AC |
661 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
662 | &config->detect, set_doc, show_doc, | |
3b64bf98 | 663 | "", print, |
e9e68a56 AC |
664 | set_func, show_func, |
665 | set_remote_list, show_remote_list); | |
d471ea57 AC |
666 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ |
667 | if (legacy) | |
668 | { | |
669 | char *legacy_name; | |
b435e160 | 670 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
671 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
672 | set_remote_list); | |
673 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
674 | show_remote_list); | |
675 | } | |
5a2468f5 JM |
676 | } |
677 | ||
d471ea57 AC |
678 | static enum packet_result |
679 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 680 | { |
d471ea57 | 681 | if (buf[0] != '\0') |
5a2468f5 | 682 | { |
d471ea57 AC |
683 | /* The stub recognized the packet request. Check that the |
684 | operation succeeded. */ | |
685 | switch (config->support) | |
686 | { | |
687 | case PACKET_SUPPORT_UNKNOWN: | |
688 | if (remote_debug) | |
689 | fprintf_unfiltered (gdb_stdlog, | |
690 | "Packet %s (%s) is supported\n", | |
691 | config->name, config->title); | |
692 | config->support = PACKET_ENABLE; | |
693 | break; | |
694 | case PACKET_DISABLE: | |
8e65ff28 AC |
695 | internal_error (__FILE__, __LINE__, |
696 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
697 | break; |
698 | case PACKET_ENABLE: | |
699 | break; | |
700 | } | |
701 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
702 | /* "OK" - definitly OK. */ | |
703 | return PACKET_OK; | |
704 | if (buf[0] == 'E' | |
705 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
706 | && buf[3] == '\0') | |
707 | /* "Enn" - definitly an error. */ | |
708 | return PACKET_ERROR; | |
709 | /* The packet may or may not be OK. Just assume it is */ | |
710 | return PACKET_OK; | |
711 | } | |
712 | else | |
713 | { | |
714 | /* The stub does not support the packet. */ | |
715 | switch (config->support) | |
716 | { | |
717 | case PACKET_ENABLE: | |
7f19b9a2 | 718 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 AC |
719 | /* If the stub previously indicated that the packet was |
720 | supported then there is a protocol error.. */ | |
721 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
722 | config->name, config->title); | |
723 | else | |
724 | /* The user set it wrong. */ | |
725 | error ("Enabled packet %s (%s) not recognized by stub", | |
726 | config->name, config->title); | |
727 | break; | |
728 | case PACKET_SUPPORT_UNKNOWN: | |
729 | if (remote_debug) | |
730 | fprintf_unfiltered (gdb_stdlog, | |
731 | "Packet %s (%s) is NOT supported\n", | |
732 | config->name, config->title); | |
733 | config->support = PACKET_DISABLE; | |
734 | break; | |
735 | case PACKET_DISABLE: | |
736 | break; | |
737 | } | |
738 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
739 | } |
740 | } | |
741 | ||
506fb367 DJ |
742 | /* Should we try the 'vCont' (descriptive resume) request? */ |
743 | static struct packet_config remote_protocol_vcont; | |
744 | ||
745 | static void | |
746 | set_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
747 | struct cmd_list_element *c) | |
748 | { | |
749 | update_packet_config (&remote_protocol_vcont); | |
750 | } | |
751 | ||
752 | static void | |
753 | show_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
754 | struct cmd_list_element *c) | |
755 | { | |
756 | show_packet_config_cmd (&remote_protocol_vcont); | |
757 | } | |
758 | ||
dc8acb97 MS |
759 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
760 | static struct packet_config remote_protocol_qSymbol; | |
761 | ||
762 | static void | |
763 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
764 | struct cmd_list_element *c) | |
765 | { | |
766 | update_packet_config (&remote_protocol_qSymbol); | |
767 | } | |
768 | ||
769 | static void | |
e9e68a56 AC |
770 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, |
771 | struct cmd_list_element *c) | |
dc8acb97 MS |
772 | { |
773 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
774 | } | |
775 | ||
5a2468f5 JM |
776 | /* Should we try the 'P' (set register) request? */ |
777 | ||
778 | static struct packet_config remote_protocol_P; | |
779 | ||
780 | static void | |
fba45db2 KB |
781 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
782 | struct cmd_list_element *c) | |
5a2468f5 | 783 | { |
d471ea57 | 784 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
785 | } |
786 | ||
787 | static void | |
e9e68a56 AC |
788 | show_remote_protocol_P_packet_cmd (char *args, int from_tty, |
789 | struct cmd_list_element *c) | |
5a2468f5 JM |
790 | { |
791 | show_packet_config_cmd (&remote_protocol_P); | |
792 | } | |
793 | ||
d471ea57 AC |
794 | /* Should we try one of the 'Z' requests? */ |
795 | ||
796 | enum Z_packet_type | |
797 | { | |
798 | Z_PACKET_SOFTWARE_BP, | |
799 | Z_PACKET_HARDWARE_BP, | |
800 | Z_PACKET_WRITE_WP, | |
801 | Z_PACKET_READ_WP, | |
802 | Z_PACKET_ACCESS_WP, | |
803 | NR_Z_PACKET_TYPES | |
804 | }; | |
96baa820 | 805 | |
d471ea57 AC |
806 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
807 | ||
808 | /* FIXME: Instead of having all these boiler plate functions, the | |
809 | command callback should include a context argument. */ | |
810 | ||
811 | static void | |
812 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
813 | struct cmd_list_element *c) | |
814 | { | |
815 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
816 | } | |
817 | ||
818 | static void | |
e9e68a56 AC |
819 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, |
820 | struct cmd_list_element *c) | |
d471ea57 AC |
821 | { |
822 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
823 | } | |
824 | ||
825 | static void | |
826 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
827 | struct cmd_list_element *c) | |
828 | { | |
829 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
830 | } | |
831 | ||
832 | static void | |
e9e68a56 AC |
833 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, |
834 | struct cmd_list_element *c) | |
d471ea57 AC |
835 | { |
836 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
837 | } | |
838 | ||
839 | static void | |
840 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
841 | struct cmd_list_element *c) | |
842 | { | |
843 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
844 | } | |
845 | ||
846 | static void | |
e9e68a56 AC |
847 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, |
848 | struct cmd_list_element *c) | |
d471ea57 AC |
849 | { |
850 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
851 | } | |
852 | ||
853 | static void | |
854 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
855 | struct cmd_list_element *c) | |
856 | { | |
857 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
858 | } | |
859 | ||
860 | static void | |
e9e68a56 AC |
861 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, |
862 | struct cmd_list_element *c) | |
d471ea57 AC |
863 | { |
864 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
865 | } | |
866 | ||
867 | static void | |
868 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
869 | struct cmd_list_element *c) | |
870 | { | |
871 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
872 | } | |
873 | ||
874 | static void | |
e9e68a56 AC |
875 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, |
876 | struct cmd_list_element *c) | |
d471ea57 AC |
877 | { |
878 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
879 | } | |
880 | ||
881 | /* For compatibility with older distributions. Provide a ``set remote | |
882 | Z-packet ...'' command that updates all the Z packet types. */ | |
883 | ||
7f19b9a2 | 884 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
885 | |
886 | static void | |
fba45db2 KB |
887 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
888 | struct cmd_list_element *c) | |
96baa820 | 889 | { |
d471ea57 AC |
890 | int i; |
891 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
892 | { | |
893 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
894 | update_packet_config (&remote_protocol_Z[i]); | |
895 | } | |
96baa820 JM |
896 | } |
897 | ||
898 | static void | |
e9e68a56 AC |
899 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
900 | struct cmd_list_element *c) | |
96baa820 | 901 | { |
d471ea57 AC |
902 | int i; |
903 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
904 | { | |
905 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
906 | } | |
96baa820 JM |
907 | } |
908 | ||
909 | /* Should we try the 'X' (remote binary download) packet? | |
910 | ||
911 | This variable (available to the user via "set remote X-packet") | |
912 | dictates whether downloads are sent in binary (via the 'X' packet). | |
913 | We assume that the stub can, and attempt to do it. This will be | |
914 | cleared if the stub does not understand it. This switch is still | |
915 | needed, though in cases when the packet is supported in the stub, | |
916 | but the connection does not allow it (i.e., 7-bit serial connection | |
917 | only). */ | |
918 | ||
919 | static struct packet_config remote_protocol_binary_download; | |
920 | ||
9d1f7ab2 MS |
921 | /* Should we try the 'ThreadInfo' query packet? |
922 | ||
923 | This variable (NOT available to the user: auto-detect only!) | |
924 | determines whether GDB will use the new, simpler "ThreadInfo" | |
925 | query or the older, more complex syntax for thread queries. | |
802188a7 | 926 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
927 | and set to false when the target fails to recognize it). */ |
928 | ||
929 | static int use_threadinfo_query; | |
930 | static int use_threadextra_query; | |
931 | ||
96baa820 JM |
932 | static void |
933 | set_remote_protocol_binary_download_cmd (char *args, | |
934 | int from_tty, | |
935 | struct cmd_list_element *c) | |
936 | { | |
d471ea57 | 937 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
938 | } |
939 | ||
940 | static void | |
e9e68a56 AC |
941 | show_remote_protocol_binary_download_cmd (char *args, int from_tty, |
942 | struct cmd_list_element *c) | |
96baa820 JM |
943 | { |
944 | show_packet_config_cmd (&remote_protocol_binary_download); | |
945 | } | |
946 | ||
802188a7 RM |
947 | /* Should we try the 'qPart:auxv' (target auxiliary vector read) request? */ |
948 | static struct packet_config remote_protocol_qPart_auxv; | |
949 | ||
950 | static void | |
951 | set_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
952 | struct cmd_list_element *c) | |
953 | { | |
954 | update_packet_config (&remote_protocol_qPart_auxv); | |
955 | } | |
956 | ||
957 | static void | |
958 | show_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
959 | struct cmd_list_element *c) | |
960 | { | |
961 | show_packet_config_cmd (&remote_protocol_qPart_auxv); | |
962 | } | |
963 | ||
b96ec7ac AC |
964 | static struct packet_config remote_protocol_p; |
965 | ||
966 | static void | |
967 | set_remote_protocol_p_packet_cmd (char *args, int from_tty, | |
968 | struct cmd_list_element *c) | |
969 | { | |
970 | update_packet_config (&remote_protocol_p); | |
971 | } | |
972 | ||
973 | static void | |
974 | show_remote_protocol_p_packet_cmd (char *args, int from_tty, | |
975 | struct cmd_list_element *c) | |
976 | { | |
977 | show_packet_config_cmd (&remote_protocol_p); | |
978 | } | |
979 | ||
980 | ||
c906108c | 981 | |
43ff13b4 | 982 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
ae44c0c4 AC |
983 | static void *sigint_remote_twice_token; |
984 | static void *sigint_remote_token; | |
43ff13b4 | 985 | |
c906108c SS |
986 | /* These are pointers to hook functions that may be set in order to |
987 | modify resume/wait behavior for a particular architecture. */ | |
988 | ||
9a4105ab AC |
989 | void (*deprecated_target_resume_hook) (void); |
990 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
991 | \f |
992 | ||
c5aa993b | 993 | |
c906108c SS |
994 | /* These are the threads which we last sent to the remote system. |
995 | -1 for all or -2 for not sent yet. */ | |
996 | static int general_thread; | |
cce74817 | 997 | static int continue_thread; |
c906108c SS |
998 | |
999 | /* Call this function as a result of | |
1000 | 1) A halt indication (T packet) containing a thread id | |
1001 | 2) A direct query of currthread | |
1002 | 3) Successful execution of set thread | |
1003 | */ | |
1004 | ||
1005 | static void | |
fba45db2 | 1006 | record_currthread (int currthread) |
c906108c | 1007 | { |
c906108c | 1008 | general_thread = currthread; |
cce74817 | 1009 | |
c906108c SS |
1010 | /* If this is a new thread, add it to GDB's thread list. |
1011 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1012 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1013 | { |
39f77062 | 1014 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1015 | ui_out_text (uiout, "[New "); |
39f77062 | 1016 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1017 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1018 | } |
c906108c SS |
1019 | } |
1020 | ||
1021 | #define MAGIC_NULL_PID 42000 | |
1022 | ||
1023 | static void | |
fba45db2 | 1024 | set_thread (int th, int gen) |
c906108c | 1025 | { |
d01949b6 AC |
1026 | struct remote_state *rs = get_remote_state (); |
1027 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1028 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1029 | |
1030 | if (state == th) | |
1031 | return; | |
1032 | ||
1033 | buf[0] = 'H'; | |
1034 | buf[1] = gen ? 'g' : 'c'; | |
1035 | if (th == MAGIC_NULL_PID) | |
1036 | { | |
1037 | buf[2] = '0'; | |
1038 | buf[3] = '\0'; | |
1039 | } | |
1040 | else if (th < 0) | |
1041 | sprintf (&buf[2], "-%x", -th); | |
1042 | else | |
1043 | sprintf (&buf[2], "%x", th); | |
1044 | putpkt (buf); | |
d01949b6 | 1045 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1046 | if (gen) |
c5aa993b | 1047 | general_thread = th; |
c906108c | 1048 | else |
cce74817 | 1049 | continue_thread = th; |
c906108c SS |
1050 | } |
1051 | \f | |
1052 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1053 | ||
1054 | static int | |
39f77062 | 1055 | remote_thread_alive (ptid_t ptid) |
c906108c | 1056 | { |
39f77062 | 1057 | int tid = PIDGET (ptid); |
cce74817 | 1058 | char buf[16]; |
c906108c | 1059 | |
cce74817 JM |
1060 | if (tid < 0) |
1061 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1062 | else |
cce74817 | 1063 | sprintf (buf, "T%08x", tid); |
c906108c | 1064 | putpkt (buf); |
c2d11a7d | 1065 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1066 | return (buf[0] == 'O' && buf[1] == 'K'); |
1067 | } | |
1068 | ||
1069 | /* About these extended threadlist and threadinfo packets. They are | |
1070 | variable length packets but, the fields within them are often fixed | |
1071 | length. They are redundent enough to send over UDP as is the | |
1072 | remote protocol in general. There is a matching unit test module | |
1073 | in libstub. */ | |
1074 | ||
cce74817 JM |
1075 | #define OPAQUETHREADBYTES 8 |
1076 | ||
1077 | /* a 64 bit opaque identifier */ | |
1078 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1079 | ||
1080 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1081 | protocol encoding, and remote.c. it is not particularly changable */ | |
1082 | ||
1083 | /* Right now, the internal structure is int. We want it to be bigger. | |
1084 | Plan to fix this. | |
c5aa993b | 1085 | */ |
cce74817 | 1086 | |
c5aa993b | 1087 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1088 | |
9d1f7ab2 | 1089 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1090 | equivalint to the reply of the remote threadinfo packet */ |
1091 | ||
1092 | struct gdb_ext_thread_info | |
c5aa993b JM |
1093 | { |
1094 | threadref threadid; /* External form of thread reference */ | |
1095 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1096 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1097 | char shortname[32]; /* To be used to name threads */ | |
1098 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1099 | }; | |
cce74817 JM |
1100 | |
1101 | /* The volume of remote transfers can be limited by submitting | |
1102 | a mask containing bits specifying the desired information. | |
1103 | Use a union of these values as the 'selection' parameter to | |
1104 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1105 | */ |
cce74817 JM |
1106 | |
1107 | #define TAG_THREADID 1 | |
1108 | #define TAG_EXISTS 2 | |
1109 | #define TAG_DISPLAY 4 | |
1110 | #define TAG_THREADNAME 8 | |
c5aa993b | 1111 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1112 | |
c906108c SS |
1113 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1114 | ||
b2dd6311 | 1115 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1116 | |
a14ed312 | 1117 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1118 | |
a14ed312 | 1119 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1120 | |
a14ed312 | 1121 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1122 | |
a14ed312 | 1123 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1124 | |
a14ed312 | 1125 | static char *pack_int (char *buf, int value); |
cce74817 | 1126 | |
a14ed312 | 1127 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1128 | |
a14ed312 | 1129 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1130 | |
a14ed312 | 1131 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1132 | |
a14ed312 | 1133 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1134 | |
a14ed312 | 1135 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1136 | |
a14ed312 | 1137 | static int threadref_to_int (threadref * ref); |
cce74817 | 1138 | |
a14ed312 | 1139 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1140 | |
a14ed312 | 1141 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1142 | |
a14ed312 | 1143 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1144 | |
a14ed312 KB |
1145 | static int remote_unpack_thread_info_response (char *pkt, |
1146 | threadref * expectedref, | |
1147 | struct gdb_ext_thread_info | |
1148 | *info); | |
cce74817 JM |
1149 | |
1150 | ||
a14ed312 KB |
1151 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1152 | struct gdb_ext_thread_info *info); | |
cce74817 | 1153 | |
a14ed312 KB |
1154 | static char *pack_threadlist_request (char *pkt, int startflag, |
1155 | int threadcount, | |
1156 | threadref * nextthread); | |
cce74817 | 1157 | |
a14ed312 KB |
1158 | static int parse_threadlist_response (char *pkt, |
1159 | int result_limit, | |
1160 | threadref * original_echo, | |
1161 | threadref * resultlist, int *doneflag); | |
cce74817 | 1162 | |
a14ed312 KB |
1163 | static int remote_get_threadlist (int startflag, |
1164 | threadref * nextthread, | |
1165 | int result_limit, | |
1166 | int *done, | |
1167 | int *result_count, threadref * threadlist); | |
cce74817 | 1168 | |
c5aa993b | 1169 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1170 | |
a14ed312 KB |
1171 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1172 | void *context, int looplimit); | |
cce74817 | 1173 | |
a14ed312 | 1174 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1175 | |
c906108c SS |
1176 | /* encode 64 bits in 16 chars of hex */ |
1177 | ||
1178 | static const char hexchars[] = "0123456789abcdef"; | |
1179 | ||
1180 | static int | |
fba45db2 | 1181 | ishex (int ch, int *val) |
c906108c SS |
1182 | { |
1183 | if ((ch >= 'a') && (ch <= 'f')) | |
1184 | { | |
1185 | *val = ch - 'a' + 10; | |
1186 | return 1; | |
1187 | } | |
1188 | if ((ch >= 'A') && (ch <= 'F')) | |
1189 | { | |
1190 | *val = ch - 'A' + 10; | |
1191 | return 1; | |
1192 | } | |
1193 | if ((ch >= '0') && (ch <= '9')) | |
1194 | { | |
1195 | *val = ch - '0'; | |
1196 | return 1; | |
1197 | } | |
1198 | return 0; | |
1199 | } | |
1200 | ||
1201 | static int | |
fba45db2 | 1202 | stubhex (int ch) |
c906108c SS |
1203 | { |
1204 | if (ch >= 'a' && ch <= 'f') | |
1205 | return ch - 'a' + 10; | |
1206 | if (ch >= '0' && ch <= '9') | |
1207 | return ch - '0'; | |
1208 | if (ch >= 'A' && ch <= 'F') | |
1209 | return ch - 'A' + 10; | |
1210 | return -1; | |
1211 | } | |
1212 | ||
1213 | static int | |
fba45db2 | 1214 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1215 | { |
1216 | int nibble; | |
1217 | int retval = 0; | |
1218 | ||
1219 | while (fieldlength) | |
1220 | { | |
1221 | nibble = stubhex (*buff++); | |
1222 | retval |= nibble; | |
1223 | fieldlength--; | |
1224 | if (fieldlength) | |
1225 | retval = retval << 4; | |
1226 | } | |
1227 | return retval; | |
1228 | } | |
1229 | ||
1230 | char * | |
fba45db2 | 1231 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1232 | ULONGEST *result) |
c906108c SS |
1233 | { |
1234 | int nibble; | |
1235 | int retval = 0; | |
1236 | ||
1237 | while (ishex (*buff, &nibble)) | |
1238 | { | |
1239 | buff++; | |
1240 | retval = retval << 4; | |
1241 | retval |= nibble & 0x0f; | |
1242 | } | |
1243 | *result = retval; | |
1244 | return buff; | |
1245 | } | |
1246 | ||
1247 | static char * | |
fba45db2 | 1248 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1249 | { |
1250 | ishex (*buf++, val); | |
1251 | return buf; | |
1252 | } | |
1253 | ||
1254 | static char * | |
fba45db2 | 1255 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1256 | { |
1257 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1258 | return buf; | |
1259 | } | |
1260 | ||
1261 | static char * | |
fba45db2 | 1262 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1263 | { |
1264 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1265 | *pkt++ = hexchars[(byte & 0xf)]; | |
1266 | return pkt; | |
1267 | } | |
1268 | ||
1269 | static char * | |
fba45db2 | 1270 | unpack_byte (char *buf, int *value) |
c906108c SS |
1271 | { |
1272 | *value = stub_unpack_int (buf, 2); | |
1273 | return buf + 2; | |
1274 | } | |
1275 | ||
1276 | static char * | |
fba45db2 | 1277 | pack_int (char *buf, int value) |
c906108c SS |
1278 | { |
1279 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1280 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1281 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1282 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1283 | return buf; | |
1284 | } | |
1285 | ||
1286 | static char * | |
fba45db2 | 1287 | unpack_int (char *buf, int *value) |
c906108c SS |
1288 | { |
1289 | *value = stub_unpack_int (buf, 8); | |
1290 | return buf + 8; | |
1291 | } | |
1292 | ||
c5aa993b | 1293 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1294 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1295 | |
1296 | static char * | |
fba45db2 | 1297 | pack_string (char *pkt, char *string) |
c906108c SS |
1298 | { |
1299 | char ch; | |
1300 | int len; | |
1301 | ||
1302 | len = strlen (string); | |
1303 | if (len > 200) | |
1304 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1305 | pkt = pack_hex_byte (pkt, len); | |
1306 | while (len-- > 0) | |
1307 | { | |
1308 | ch = *string++; | |
1309 | if ((ch == '\0') || (ch == '#')) | |
1310 | ch = '*'; /* Protect encapsulation */ | |
1311 | *pkt++ = ch; | |
1312 | } | |
1313 | return pkt; | |
1314 | } | |
1315 | #endif /* 0 (unused) */ | |
1316 | ||
1317 | static char * | |
fba45db2 | 1318 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1319 | { |
1320 | while (length--) | |
1321 | *dest++ = *src++; | |
1322 | *dest = '\0'; | |
1323 | return src; | |
1324 | } | |
1325 | ||
1326 | static char * | |
fba45db2 | 1327 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1328 | { |
1329 | char *limit; | |
1330 | unsigned char *altid; | |
1331 | ||
1332 | altid = (unsigned char *) id; | |
1333 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1334 | while (pkt < limit) | |
1335 | pkt = pack_hex_byte (pkt, *altid++); | |
1336 | return pkt; | |
1337 | } | |
1338 | ||
1339 | ||
1340 | static char * | |
fba45db2 | 1341 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1342 | { |
1343 | char *altref; | |
1344 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1345 | int x, y; | |
1346 | ||
1347 | altref = (char *) id; | |
1348 | ||
1349 | while (inbuf < limit) | |
1350 | { | |
1351 | x = stubhex (*inbuf++); | |
1352 | y = stubhex (*inbuf++); | |
1353 | *altref++ = (x << 4) | y; | |
1354 | } | |
1355 | return inbuf; | |
1356 | } | |
1357 | ||
1358 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1359 | ints. This is due to a mismatch of specifications. We would like | |
1360 | to use 64bit thread references internally. This is an adapter | |
1361 | function. */ | |
1362 | ||
1363 | void | |
fba45db2 | 1364 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1365 | { |
1366 | unsigned char *scan; | |
1367 | ||
1368 | scan = (unsigned char *) id; | |
1369 | { | |
1370 | int i = 4; | |
1371 | while (i--) | |
1372 | *scan++ = 0; | |
1373 | } | |
1374 | *scan++ = (value >> 24) & 0xff; | |
1375 | *scan++ = (value >> 16) & 0xff; | |
1376 | *scan++ = (value >> 8) & 0xff; | |
1377 | *scan++ = (value & 0xff); | |
1378 | } | |
1379 | ||
1380 | static int | |
fba45db2 | 1381 | threadref_to_int (threadref *ref) |
c906108c SS |
1382 | { |
1383 | int i, value = 0; | |
1384 | unsigned char *scan; | |
1385 | ||
1386 | scan = (char *) ref; | |
1387 | scan += 4; | |
1388 | i = 4; | |
1389 | while (i-- > 0) | |
1390 | value = (value << 8) | ((*scan++) & 0xff); | |
1391 | return value; | |
1392 | } | |
1393 | ||
1394 | static void | |
fba45db2 | 1395 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1396 | { |
1397 | int i; | |
1398 | unsigned char *csrc, *cdest; | |
1399 | ||
1400 | csrc = (unsigned char *) src; | |
1401 | cdest = (unsigned char *) dest; | |
1402 | i = 8; | |
1403 | while (i--) | |
1404 | *cdest++ = *csrc++; | |
1405 | } | |
1406 | ||
1407 | static int | |
fba45db2 | 1408 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1409 | { |
1410 | /* things are broken right now, so just assume we got a match */ | |
1411 | #if 0 | |
1412 | unsigned char *srcp, *destp; | |
1413 | int i, result; | |
1414 | srcp = (char *) src; | |
1415 | destp = (char *) dest; | |
1416 | ||
1417 | result = 1; | |
1418 | while (i-- > 0) | |
1419 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1420 | return result; | |
1421 | #endif | |
1422 | return 1; | |
1423 | } | |
1424 | ||
1425 | /* | |
c5aa993b JM |
1426 | threadid:1, # always request threadid |
1427 | context_exists:2, | |
1428 | display:4, | |
1429 | unique_name:8, | |
1430 | more_display:16 | |
1431 | */ | |
c906108c SS |
1432 | |
1433 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1434 | ||
1435 | static char * | |
fba45db2 | 1436 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1437 | { |
1438 | *pkt++ = 'q'; /* Info Query */ | |
1439 | *pkt++ = 'P'; /* process or thread info */ | |
1440 | pkt = pack_int (pkt, mode); /* mode */ | |
1441 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1442 | *pkt = '\0'; /* terminate */ | |
1443 | return pkt; | |
1444 | } | |
1445 | ||
1446 | /* These values tag the fields in a thread info response packet */ | |
1447 | /* Tagging the fields allows us to request specific fields and to | |
1448 | add more fields as time goes by */ | |
1449 | ||
c5aa993b JM |
1450 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1451 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1452 | fetch registers and its stack */ | |
1453 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1454 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
802188a7 | 1455 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
c5aa993b | 1456 | the process */ |
c906108c SS |
1457 | |
1458 | static int | |
fba45db2 KB |
1459 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1460 | struct gdb_ext_thread_info *info) | |
c906108c | 1461 | { |
d01949b6 | 1462 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1463 | int mask, length; |
1464 | unsigned int tag; | |
1465 | threadref ref; | |
d01949b6 | 1466 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1467 | int retval = 1; |
1468 | ||
1469 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1470 | info->active = 0; | |
1471 | info->display[0] = '\0'; | |
1472 | info->shortname[0] = '\0'; | |
1473 | info->more_display[0] = '\0'; | |
1474 | ||
1475 | /* Assume the characters indicating the packet type have been stripped */ | |
1476 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1477 | pkt = unpack_threadid (pkt, &ref); | |
1478 | ||
1479 | if (mask == 0) | |
1480 | warning ("Incomplete response to threadinfo request\n"); | |
1481 | if (!threadmatch (&ref, expectedref)) | |
1482 | { /* This is an answer to a different request */ | |
1483 | warning ("ERROR RMT Thread info mismatch\n"); | |
1484 | return 0; | |
1485 | } | |
1486 | copy_threadref (&info->threadid, &ref); | |
1487 | ||
1488 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1489 | ||
c5aa993b | 1490 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1491 | { |
1492 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1493 | pkt = unpack_byte (pkt, &length); /* length */ | |
1494 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1495 | { | |
1496 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1497 | retval = 0; | |
1498 | break; | |
1499 | } | |
1500 | if (tag == TAG_THREADID) | |
1501 | { | |
1502 | if (length != 16) | |
1503 | { | |
1504 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1505 | retval = 0; | |
1506 | break; | |
1507 | } | |
1508 | pkt = unpack_threadid (pkt, &ref); | |
1509 | mask = mask & ~TAG_THREADID; | |
1510 | continue; | |
1511 | } | |
1512 | if (tag == TAG_EXISTS) | |
1513 | { | |
1514 | info->active = stub_unpack_int (pkt, length); | |
1515 | pkt += length; | |
1516 | mask = mask & ~(TAG_EXISTS); | |
1517 | if (length > 8) | |
1518 | { | |
1519 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1520 | retval = 0; | |
1521 | break; | |
1522 | } | |
1523 | continue; | |
1524 | } | |
1525 | if (tag == TAG_THREADNAME) | |
1526 | { | |
1527 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1528 | mask = mask & ~TAG_THREADNAME; | |
1529 | continue; | |
1530 | } | |
1531 | if (tag == TAG_DISPLAY) | |
1532 | { | |
1533 | pkt = unpack_string (pkt, &info->display[0], length); | |
1534 | mask = mask & ~TAG_DISPLAY; | |
1535 | continue; | |
1536 | } | |
1537 | if (tag == TAG_MOREDISPLAY) | |
1538 | { | |
1539 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1540 | mask = mask & ~TAG_MOREDISPLAY; | |
1541 | continue; | |
1542 | } | |
1543 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1544 | break; /* Not a tag we know about */ | |
1545 | } | |
1546 | return retval; | |
1547 | } | |
1548 | ||
1549 | static int | |
fba45db2 KB |
1550 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1551 | struct gdb_ext_thread_info *info) | |
c906108c | 1552 | { |
d01949b6 | 1553 | struct remote_state *rs = get_remote_state (); |
c906108c | 1554 | int result; |
d01949b6 | 1555 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1556 | |
1557 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1558 | putpkt (threadinfo_pkt); | |
d01949b6 | 1559 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1560 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1561 | info); | |
1562 | return result; | |
1563 | } | |
1564 | ||
c906108c SS |
1565 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1566 | ||
1567 | static char * | |
fba45db2 KB |
1568 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1569 | threadref *nextthread) | |
c906108c SS |
1570 | { |
1571 | *pkt++ = 'q'; /* info query packet */ | |
1572 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1573 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1574 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1575 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1576 | *pkt = '\0'; | |
1577 | return pkt; | |
1578 | } | |
1579 | ||
1580 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1581 | ||
1582 | static int | |
fba45db2 KB |
1583 | parse_threadlist_response (char *pkt, int result_limit, |
1584 | threadref *original_echo, threadref *resultlist, | |
1585 | int *doneflag) | |
c906108c | 1586 | { |
d01949b6 | 1587 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1588 | char *limit; |
1589 | int count, resultcount, done; | |
1590 | ||
1591 | resultcount = 0; | |
1592 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1593 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1594 | pkt = unpack_byte (pkt, &count); /* count field */ |
1595 | pkt = unpack_nibble (pkt, &done); | |
1596 | /* The first threadid is the argument threadid. */ | |
1597 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1598 | while ((count-- > 0) && (pkt < limit)) | |
1599 | { | |
1600 | pkt = unpack_threadid (pkt, resultlist++); | |
1601 | if (resultcount++ >= result_limit) | |
1602 | break; | |
1603 | } | |
1604 | if (doneflag) | |
1605 | *doneflag = done; | |
1606 | return resultcount; | |
1607 | } | |
1608 | ||
1609 | static int | |
fba45db2 KB |
1610 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1611 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1612 | { |
d01949b6 | 1613 | struct remote_state *rs = get_remote_state (); |
c906108c | 1614 | static threadref echo_nextthread; |
d01949b6 AC |
1615 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1616 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1617 | int result = 1; |
1618 | ||
1619 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1620 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1621 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1622 | |
1623 | pack_threadlist_request (threadlist_packet, | |
1624 | startflag, result_limit, nextthread); | |
1625 | putpkt (threadlist_packet); | |
d01949b6 | 1626 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1627 | |
1628 | *result_count = | |
1629 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1630 | threadlist, done); | |
1631 | ||
1632 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1633 | { | |
1634 | /* FIXME: This is a good reason to drop the packet */ | |
1635 | /* Possably, there is a duplicate response */ | |
1636 | /* Possabilities : | |
1637 | retransmit immediatly - race conditions | |
1638 | retransmit after timeout - yes | |
1639 | exit | |
1640 | wait for packet, then exit | |
1641 | */ | |
1642 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1643 | return 0; /* I choose simply exiting */ | |
1644 | } | |
1645 | if (*result_count <= 0) | |
1646 | { | |
1647 | if (*done != 1) | |
1648 | { | |
1649 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1650 | result = 0; | |
1651 | } | |
1652 | return result; /* break; */ | |
1653 | } | |
1654 | if (*result_count > result_limit) | |
1655 | { | |
1656 | *result_count = 0; | |
1657 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1658 | return 0; | |
1659 | } | |
1660 | return result; | |
1661 | } | |
1662 | ||
1663 | /* This is the interface between remote and threads, remotes upper interface */ | |
1664 | ||
1665 | /* remote_find_new_threads retrieves the thread list and for each | |
1666 | thread in the list, looks up the thread in GDB's internal list, | |
1667 | ading the thread if it does not already exist. This involves | |
1668 | getting partial thread lists from the remote target so, polling the | |
1669 | quit_flag is required. */ | |
1670 | ||
1671 | ||
1672 | /* About this many threadisds fit in a packet. */ | |
1673 | ||
1674 | #define MAXTHREADLISTRESULTS 32 | |
1675 | ||
1676 | static int | |
fba45db2 KB |
1677 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1678 | int looplimit) | |
c906108c SS |
1679 | { |
1680 | int done, i, result_count; | |
1681 | int startflag = 1; | |
1682 | int result = 1; | |
1683 | int loopcount = 0; | |
1684 | static threadref nextthread; | |
1685 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1686 | ||
1687 | done = 0; | |
1688 | while (!done) | |
1689 | { | |
1690 | if (loopcount++ > looplimit) | |
1691 | { | |
1692 | result = 0; | |
1693 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1694 | break; | |
1695 | } | |
1696 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1697 | &done, &result_count, resultthreadlist)) | |
1698 | { | |
1699 | result = 0; | |
1700 | break; | |
1701 | } | |
1702 | /* clear for later iterations */ | |
1703 | startflag = 0; | |
1704 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1705 | if (result_count >= 1) | |
1706 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1707 | i = 0; | |
1708 | while (result_count--) | |
1709 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1710 | break; | |
1711 | } | |
1712 | return result; | |
1713 | } | |
1714 | ||
1715 | static int | |
fba45db2 | 1716 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1717 | { |
39f77062 | 1718 | ptid_t ptid; |
c906108c | 1719 | |
39f77062 KB |
1720 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1721 | ||
1722 | if (!in_thread_list (ptid)) | |
1723 | add_thread (ptid); | |
c906108c SS |
1724 | return 1; /* continue iterator */ |
1725 | } | |
1726 | ||
1727 | #define CRAZY_MAX_THREADS 1000 | |
1728 | ||
39f77062 KB |
1729 | static ptid_t |
1730 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1731 | { |
d01949b6 AC |
1732 | struct remote_state *rs = get_remote_state (); |
1733 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1734 | |
1735 | putpkt ("qC"); | |
d01949b6 | 1736 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1737 | if (buf[0] == 'Q' && buf[1] == 'C') |
39f77062 | 1738 | return pid_to_ptid (strtol (&buf[2], NULL, 16)); |
c906108c SS |
1739 | else |
1740 | return oldpid; | |
1741 | } | |
1742 | ||
802188a7 RM |
1743 | /* Find new threads for info threads command. |
1744 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1745 | */ |
cce74817 JM |
1746 | |
1747 | static void | |
fba45db2 | 1748 | remote_find_new_threads (void) |
c906108c | 1749 | { |
c5aa993b JM |
1750 | remote_threadlist_iterator (remote_newthread_step, 0, |
1751 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1752 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1753 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1754 | } |
1755 | ||
9d1f7ab2 MS |
1756 | /* |
1757 | * Find all threads for info threads command. | |
1758 | * Uses new thread protocol contributed by Cisco. | |
1759 | * Falls back and attempts to use the older method (above) | |
1760 | * if the target doesn't respond to the new method. | |
1761 | */ | |
1762 | ||
0f71a2f6 JM |
1763 | static void |
1764 | remote_threads_info (void) | |
1765 | { | |
d01949b6 AC |
1766 | struct remote_state *rs = get_remote_state (); |
1767 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1768 | char *bufp; |
0f71a2f6 JM |
1769 | int tid; |
1770 | ||
1771 | if (remote_desc == 0) /* paranoia */ | |
1772 | error ("Command can only be used when connected to the remote target."); | |
1773 | ||
9d1f7ab2 MS |
1774 | if (use_threadinfo_query) |
1775 | { | |
1776 | putpkt ("qfThreadInfo"); | |
1777 | bufp = buf; | |
d01949b6 | 1778 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 | 1779 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1780 | { |
9d1f7ab2 MS |
1781 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1782 | { | |
1783 | do | |
1784 | { | |
1785 | tid = strtol (bufp, &bufp, 16); | |
39f77062 KB |
1786 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1787 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1788 | } |
1789 | while (*bufp++ == ','); /* comma-separated list */ | |
1790 | putpkt ("qsThreadInfo"); | |
1791 | bufp = buf; | |
d01949b6 | 1792 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1793 | } |
1794 | return; /* done */ | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | /* Else fall back to old method based on jmetzler protocol. */ | |
1799 | use_threadinfo_query = 0; | |
1800 | remote_find_new_threads (); | |
1801 | return; | |
1802 | } | |
1803 | ||
802188a7 | 1804 | /* |
9d1f7ab2 MS |
1805 | * Collect a descriptive string about the given thread. |
1806 | * The target may say anything it wants to about the thread | |
1807 | * (typically info about its blocked / runnable state, name, etc.). | |
1808 | * This string will appear in the info threads display. | |
802188a7 | 1809 | * |
9d1f7ab2 MS |
1810 | * Optional: targets are not required to implement this function. |
1811 | */ | |
1812 | ||
1813 | static char * | |
1814 | remote_threads_extra_info (struct thread_info *tp) | |
1815 | { | |
d01949b6 | 1816 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1817 | int result; |
1818 | int set; | |
1819 | threadref id; | |
1820 | struct gdb_ext_thread_info threadinfo; | |
1821 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1822 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1823 | int n = 0; /* position in display_buf */ |
1824 | ||
1825 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1826 | internal_error (__FILE__, __LINE__, |
1827 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1828 | |
1829 | if (use_threadextra_query) | |
1830 | { | |
39f77062 | 1831 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1832 | putpkt (bufp); |
d01949b6 | 1833 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1834 | if (bufp[0] != 0) |
1835 | { | |
30559e10 MS |
1836 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1837 | result = hex2bin (bufp, display_buf, n); | |
1838 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1839 | return display_buf; |
1840 | } | |
0f71a2f6 | 1841 | } |
9d1f7ab2 MS |
1842 | |
1843 | /* If the above query fails, fall back to the old method. */ | |
1844 | use_threadextra_query = 0; | |
1845 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1846 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1847 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1848 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1849 | if (threadinfo.active) | |
0f71a2f6 | 1850 | { |
9d1f7ab2 MS |
1851 | if (*threadinfo.shortname) |
1852 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1853 | if (*threadinfo.display) | |
1854 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1855 | if (*threadinfo.more_display) | |
1856 | n += sprintf(&display_buf[n], " Priority: %s", | |
1857 | threadinfo.more_display); | |
1858 | ||
1859 | if (n > 0) | |
c5aa993b | 1860 | { |
9d1f7ab2 MS |
1861 | /* for purely cosmetic reasons, clear up trailing commas */ |
1862 | if (',' == display_buf[n-1]) | |
1863 | display_buf[n-1] = ' '; | |
1864 | return display_buf; | |
c5aa993b | 1865 | } |
0f71a2f6 | 1866 | } |
9d1f7ab2 | 1867 | return NULL; |
0f71a2f6 | 1868 | } |
9d1f7ab2 | 1869 | |
c906108c | 1870 | \f |
c5aa993b | 1871 | |
c906108c SS |
1872 | /* Restart the remote side; this is an extended protocol operation. */ |
1873 | ||
1874 | static void | |
fba45db2 | 1875 | extended_remote_restart (void) |
c906108c | 1876 | { |
d01949b6 AC |
1877 | struct remote_state *rs = get_remote_state (); |
1878 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1879 | |
1880 | /* Send the restart command; for reasons I don't understand the | |
1881 | remote side really expects a number after the "R". */ | |
1882 | buf[0] = 'R'; | |
1883 | sprintf (&buf[1], "%x", 0); | |
1884 | putpkt (buf); | |
1885 | ||
1886 | /* Now query for status so this looks just like we restarted | |
1887 | gdbserver from scratch. */ | |
1888 | putpkt ("?"); | |
d01949b6 | 1889 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1890 | } |
1891 | \f | |
1892 | /* Clean up connection to a remote debugger. */ | |
1893 | ||
c906108c | 1894 | static void |
fba45db2 | 1895 | remote_close (int quitting) |
c906108c SS |
1896 | { |
1897 | if (remote_desc) | |
2cd58942 | 1898 | serial_close (remote_desc); |
c906108c SS |
1899 | remote_desc = NULL; |
1900 | } | |
1901 | ||
1902 | /* Query the remote side for the text, data and bss offsets. */ | |
1903 | ||
1904 | static void | |
fba45db2 | 1905 | get_offsets (void) |
c906108c | 1906 | { |
d01949b6 AC |
1907 | struct remote_state *rs = get_remote_state (); |
1908 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1909 | char *ptr; |
c906108c SS |
1910 | int lose; |
1911 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1912 | struct section_offsets *offs; | |
1913 | ||
1914 | putpkt ("qOffsets"); | |
1915 | ||
d01949b6 | 1916 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1917 | |
1918 | if (buf[0] == '\000') | |
1919 | return; /* Return silently. Stub doesn't support | |
1920 | this command. */ | |
1921 | if (buf[0] == 'E') | |
1922 | { | |
1923 | warning ("Remote failure reply: %s", buf); | |
1924 | return; | |
1925 | } | |
1926 | ||
1927 | /* Pick up each field in turn. This used to be done with scanf, but | |
1928 | scanf will make trouble if CORE_ADDR size doesn't match | |
1929 | conversion directives correctly. The following code will work | |
1930 | with any size of CORE_ADDR. */ | |
1931 | text_addr = data_addr = bss_addr = 0; | |
1932 | ptr = buf; | |
1933 | lose = 0; | |
1934 | ||
1935 | if (strncmp (ptr, "Text=", 5) == 0) | |
1936 | { | |
1937 | ptr += 5; | |
1938 | /* Don't use strtol, could lose on big values. */ | |
1939 | while (*ptr && *ptr != ';') | |
1940 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1941 | } | |
1942 | else | |
1943 | lose = 1; | |
1944 | ||
1945 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1946 | { | |
1947 | ptr += 6; | |
1948 | while (*ptr && *ptr != ';') | |
1949 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1950 | } | |
1951 | else | |
1952 | lose = 1; | |
1953 | ||
1954 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1955 | { | |
1956 | ptr += 5; | |
1957 | while (*ptr && *ptr != ';') | |
1958 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1959 | } | |
1960 | else | |
1961 | lose = 1; | |
1962 | ||
1963 | if (lose) | |
1964 | error ("Malformed response to offset query, %s", buf); | |
1965 | ||
1966 | if (symfile_objfile == NULL) | |
1967 | return; | |
1968 | ||
802188a7 | 1969 | offs = ((struct section_offsets *) |
a39a16c4 | 1970 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1971 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1972 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1973 | |
a4c8257b | 1974 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1975 | |
1976 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1977 | because that's what nlmconv does now. The real solution requires changes | |
1978 | to the stub and remote.c that I don't have time to do right now. */ | |
1979 | ||
a4c8257b EZ |
1980 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1981 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1982 | |
1983 | objfile_relocate (symfile_objfile, offs); | |
1984 | } | |
1985 | ||
1986 | /* Stub for catch_errors. */ | |
1987 | ||
0f71a2f6 | 1988 | static int |
36918e70 | 1989 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 JM |
1990 | { |
1991 | start_remote (); /* Initialize gdb process mechanisms */ | |
36918e70 AC |
1992 | /* NOTE: Return something >=0. A -ve value is reserved for |
1993 | catch_exceptions. */ | |
0f71a2f6 JM |
1994 | return 1; |
1995 | } | |
1996 | ||
c906108c | 1997 | static int |
36918e70 | 1998 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 1999 | { |
8edbea78 | 2000 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2001 | |
2002 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2003 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2004 | |
2005 | /* Let the stub know that we want it to return the thread. */ | |
2006 | set_thread (-1, 0); | |
2007 | ||
39f77062 | 2008 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2009 | |
2010 | get_offsets (); /* Get text, data & bss offsets */ | |
2011 | ||
2012 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2013 | immediate_quit--; |
c906108c | 2014 | |
36918e70 AC |
2015 | /* NOTE: See comment above in remote_start_remote_dummy(). This |
2016 | function returns something >=0. */ | |
2017 | return remote_start_remote_dummy (uiout, dummy); | |
c906108c SS |
2018 | } |
2019 | ||
2020 | /* Open a connection to a remote debugger. | |
2021 | NAME is the filename used for communication. */ | |
2022 | ||
2023 | static void | |
fba45db2 | 2024 | remote_open (char *name, int from_tty) |
c906108c | 2025 | { |
92d1e331 | 2026 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2027 | } |
2028 | ||
43ff13b4 JM |
2029 | /* Just like remote_open, but with asynchronous support. */ |
2030 | static void | |
fba45db2 | 2031 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2032 | { |
92d1e331 | 2033 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2034 | } |
2035 | ||
c906108c SS |
2036 | /* Open a connection to a remote debugger using the extended |
2037 | remote gdb protocol. NAME is the filename used for communication. */ | |
2038 | ||
2039 | static void | |
fba45db2 | 2040 | extended_remote_open (char *name, int from_tty) |
c906108c | 2041 | { |
92d1e331 DJ |
2042 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2043 | 0 /* async_p */); | |
c906108c SS |
2044 | } |
2045 | ||
43ff13b4 JM |
2046 | /* Just like extended_remote_open, but with asynchronous support. */ |
2047 | static void | |
fba45db2 | 2048 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2049 | { |
92d1e331 DJ |
2050 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2051 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2052 | } |
2053 | ||
c906108c SS |
2054 | /* Generic code for opening a connection to a remote target. */ |
2055 | ||
d471ea57 AC |
2056 | static void |
2057 | init_all_packet_configs (void) | |
2058 | { | |
2059 | int i; | |
2060 | update_packet_config (&remote_protocol_P); | |
b96ec7ac | 2061 | update_packet_config (&remote_protocol_p); |
dc8acb97 | 2062 | update_packet_config (&remote_protocol_qSymbol); |
506fb367 | 2063 | update_packet_config (&remote_protocol_vcont); |
d471ea57 AC |
2064 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2065 | update_packet_config (&remote_protocol_Z[i]); | |
2066 | /* Force remote_write_bytes to check whether target supports binary | |
2067 | downloading. */ | |
2068 | update_packet_config (&remote_protocol_binary_download); | |
802188a7 | 2069 | update_packet_config (&remote_protocol_qPart_auxv); |
d471ea57 AC |
2070 | } |
2071 | ||
dc8acb97 MS |
2072 | /* Symbol look-up. */ |
2073 | ||
2074 | static void | |
2075 | remote_check_symbols (struct objfile *objfile) | |
2076 | { | |
d01949b6 | 2077 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2078 | char *msg, *reply, *tmp; |
2079 | struct minimal_symbol *sym; | |
2080 | int end; | |
2081 | ||
2082 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2083 | return; | |
2084 | ||
d01949b6 AC |
2085 | msg = alloca (rs->remote_packet_size); |
2086 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2087 | |
2088 | /* Invite target to request symbol lookups. */ | |
2089 | ||
2090 | putpkt ("qSymbol::"); | |
d01949b6 | 2091 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2092 | packet_ok (reply, &remote_protocol_qSymbol); |
2093 | ||
2094 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2095 | { | |
2096 | tmp = &reply[8]; | |
2097 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2098 | msg[end] = '\0'; | |
2099 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2100 | if (sym == NULL) | |
2101 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2102 | else | |
802188a7 | 2103 | sprintf (msg, "qSymbol:%s:%s", |
dc8acb97 MS |
2104 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2105 | &reply[8]); | |
2106 | putpkt (msg); | |
d01949b6 | 2107 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2108 | } |
2109 | } | |
2110 | ||
9db8d71f DJ |
2111 | static struct serial * |
2112 | remote_serial_open (char *name) | |
2113 | { | |
2114 | static int udp_warning = 0; | |
2115 | ||
2116 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2117 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2118 | serial connection is reliable and not the serial connection promising | |
2119 | to be. */ | |
2120 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2121 | { | |
2122 | warning ("The remote protocol may be unreliable over UDP."); | |
2123 | warning ("Some events may be lost, rendering further debugging " | |
2124 | "impossible."); | |
2125 | udp_warning = 1; | |
2126 | } | |
2127 | ||
2128 | return serial_open (name); | |
2129 | } | |
2130 | ||
c906108c | 2131 | static void |
fba45db2 | 2132 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2133 | int extended_p, int async_p) |
c906108c | 2134 | { |
36918e70 | 2135 | int ex; |
d01949b6 | 2136 | struct remote_state *rs = get_remote_state (); |
c906108c | 2137 | if (name == 0) |
22e04375 AC |
2138 | error ("To open a remote debug connection, you need to specify what\n" |
2139 | "serial device is attached to the remote system\n" | |
2140 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2141 | |
6426a772 | 2142 | /* See FIXME above */ |
92d1e331 DJ |
2143 | if (!async_p) |
2144 | wait_forever_enabled_p = 1; | |
6426a772 | 2145 | |
00cac895 DJ |
2146 | reopen_exec_file (); |
2147 | reread_symbols (); | |
2148 | ||
c906108c SS |
2149 | target_preopen (from_tty); |
2150 | ||
2151 | unpush_target (target); | |
2152 | ||
9db8d71f | 2153 | remote_desc = remote_serial_open (name); |
c906108c SS |
2154 | if (!remote_desc) |
2155 | perror_with_name (name); | |
2156 | ||
2157 | if (baud_rate != -1) | |
2158 | { | |
2cd58942 | 2159 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2160 | { |
9b74d5d3 KB |
2161 | /* The requested speed could not be set. Error out to |
2162 | top level after closing remote_desc. Take care to | |
2163 | set remote_desc to NULL to avoid closing remote_desc | |
2164 | more than once. */ | |
2cd58942 | 2165 | serial_close (remote_desc); |
9b74d5d3 | 2166 | remote_desc = NULL; |
c906108c SS |
2167 | perror_with_name (name); |
2168 | } | |
2169 | } | |
2170 | ||
2cd58942 | 2171 | serial_raw (remote_desc); |
c906108c SS |
2172 | |
2173 | /* If there is something sitting in the buffer we might take it as a | |
2174 | response to a command, which would be bad. */ | |
2cd58942 | 2175 | serial_flush_input (remote_desc); |
c906108c SS |
2176 | |
2177 | if (from_tty) | |
2178 | { | |
2179 | puts_filtered ("Remote debugging using "); | |
2180 | puts_filtered (name); | |
2181 | puts_filtered ("\n"); | |
2182 | } | |
c5aa993b | 2183 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2184 | |
d471ea57 | 2185 | init_all_packet_configs (); |
802188a7 | 2186 | |
c5aa993b | 2187 | general_thread = -2; |
cce74817 | 2188 | continue_thread = -2; |
c906108c | 2189 | |
9d1f7ab2 MS |
2190 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2191 | use_threadinfo_query = 1; | |
2192 | use_threadextra_query = 1; | |
2193 | ||
c906108c SS |
2194 | /* Without this, some commands which require an active target (such |
2195 | as kill) won't work. This variable serves (at least) double duty | |
2196 | as both the pid of the target process (if it has such), and as a | |
2197 | flag indicating that a target is active. These functions should | |
2198 | be split out into seperate variables, especially since GDB will | |
2199 | someday have a notion of debugging several processes. */ | |
2200 | ||
39f77062 | 2201 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2202 | |
2203 | if (async_p) | |
2204 | { | |
2205 | /* With this target we start out by owning the terminal. */ | |
2206 | remote_async_terminal_ours_p = 1; | |
2207 | ||
2208 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2209 | assumed that the target is already ready and able to respond to | |
2210 | requests. Unfortunately remote_start_remote() eventually calls | |
2211 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2212 | around this. Eventually a mechanism that allows | |
2213 | wait_for_inferior() to expect/get timeouts will be | |
2214 | implemented. */ | |
2215 | wait_forever_enabled_p = 0; | |
2216 | } | |
2217 | ||
f78f6cf1 MS |
2218 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2219 | /* First delete any symbols previously loaded from shared libraries. */ | |
2220 | no_shared_libraries (NULL, 0); | |
2221 | #endif | |
2222 | ||
36918e70 | 2223 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2224 | target (we'd otherwise be in an inconsistent state) and then |
2225 | propogate the error on up the exception chain. This ensures that | |
2226 | the caller doesn't stumble along blindly assuming that the | |
2227 | function succeeded. The CLI doesn't have this problem but other | |
2228 | UI's, such as MI do. | |
36918e70 AC |
2229 | |
2230 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2231 | this function should return an error indication letting the | |
ce2826aa | 2232 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2233 | ``target remote'' is directly wired to this function making that |
2234 | impossible. On a positive note, the CLI side of this problem has | |
2235 | been fixed - the function set_cmd_context() makes it possible for | |
2236 | all the ``target ....'' commands to share a common callback | |
2237 | function. See cli-dump.c. */ | |
2238 | ex = catch_exceptions (uiout, | |
2239 | remote_start_remote, NULL, | |
2240 | "Couldn't establish connection to remote" | |
2241 | " target\n", | |
2242 | RETURN_MASK_ALL); | |
2243 | if (ex < 0) | |
c906108c SS |
2244 | { |
2245 | pop_target (); | |
92d1e331 DJ |
2246 | if (async_p) |
2247 | wait_forever_enabled_p = 1; | |
165b8e33 | 2248 | throw_exception (ex); |
c906108c SS |
2249 | } |
2250 | ||
92d1e331 DJ |
2251 | if (async_p) |
2252 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2253 | |
2254 | if (extended_p) | |
43ff13b4 | 2255 | { |
6240bebf | 2256 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2257 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2258 | putpkt ("!"); |
d01949b6 | 2259 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2260 | } |
f78f6cf1 | 2261 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
802188a7 RM |
2262 | /* FIXME: need a master target_open vector from which all |
2263 | remote_opens can be called, so that stuff like this can | |
6240bebf | 2264 | go there. Failing that, the following code must be copied |
802188a7 | 2265 | to the open function for any remote target that wants to |
6240bebf | 2266 | support svr4 shared libraries. */ |
f78f6cf1 MS |
2267 | |
2268 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2269 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2270 | { |
2271 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2272 | remote_check_symbols (symfile_objfile); | |
2273 | } | |
6240bebf | 2274 | #endif |
43ff13b4 JM |
2275 | } |
2276 | ||
c906108c SS |
2277 | /* This takes a program previously attached to and detaches it. After |
2278 | this is done, GDB can be used to debug some other program. We | |
2279 | better not have left any breakpoints in the target program or it'll | |
2280 | die when it hits one. */ | |
2281 | ||
2282 | static void | |
fba45db2 | 2283 | remote_detach (char *args, int from_tty) |
c906108c | 2284 | { |
d01949b6 AC |
2285 | struct remote_state *rs = get_remote_state (); |
2286 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2287 | |
2288 | if (args) | |
2289 | error ("Argument given to \"detach\" when remotely debugging."); | |
2290 | ||
2291 | /* Tell the remote target to detach. */ | |
2292 | strcpy (buf, "D"); | |
d01949b6 | 2293 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2294 | |
6ad8ae5c DJ |
2295 | /* Unregister the file descriptor from the event loop. */ |
2296 | if (target_is_async_p ()) | |
2297 | serial_async (remote_desc, NULL, 0); | |
2298 | ||
cca728d0 | 2299 | target_mourn_inferior (); |
c906108c SS |
2300 | if (from_tty) |
2301 | puts_filtered ("Ending remote debugging.\n"); | |
2302 | } | |
2303 | ||
6ad8ae5c DJ |
2304 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2305 | ||
43ff13b4 | 2306 | static void |
6ad8ae5c | 2307 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2308 | { |
d01949b6 AC |
2309 | struct remote_state *rs = get_remote_state (); |
2310 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2311 | |
2312 | if (args) | |
2313 | error ("Argument given to \"detach\" when remotely debugging."); | |
2314 | ||
43ff13b4 | 2315 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2316 | if (target_is_async_p ()) |
2cd58942 | 2317 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2318 | |
cca728d0 | 2319 | target_mourn_inferior (); |
43ff13b4 JM |
2320 | if (from_tty) |
2321 | puts_filtered ("Ending remote debugging.\n"); | |
2322 | } | |
2323 | ||
c906108c SS |
2324 | /* Convert hex digit A to a number. */ |
2325 | ||
30559e10 | 2326 | static int |
fba45db2 | 2327 | fromhex (int a) |
c906108c SS |
2328 | { |
2329 | if (a >= '0' && a <= '9') | |
2330 | return a - '0'; | |
2331 | else if (a >= 'a' && a <= 'f') | |
2332 | return a - 'a' + 10; | |
2333 | else if (a >= 'A' && a <= 'F') | |
2334 | return a - 'A' + 10; | |
c5aa993b | 2335 | else |
c906108c SS |
2336 | error ("Reply contains invalid hex digit %d", a); |
2337 | } | |
2338 | ||
30559e10 MS |
2339 | static int |
2340 | hex2bin (const char *hex, char *bin, int count) | |
2341 | { | |
2342 | int i; | |
2343 | ||
30559e10 MS |
2344 | for (i = 0; i < count; i++) |
2345 | { | |
2346 | if (hex[0] == 0 || hex[1] == 0) | |
2347 | { | |
2348 | /* Hex string is short, or of uneven length. | |
2349 | Return the count that has been converted so far. */ | |
2350 | return i; | |
2351 | } | |
2352 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2353 | hex += 2; | |
2354 | } | |
2355 | return i; | |
2356 | } | |
2357 | ||
c906108c SS |
2358 | /* Convert number NIB to a hex digit. */ |
2359 | ||
2360 | static int | |
fba45db2 | 2361 | tohex (int nib) |
c906108c SS |
2362 | { |
2363 | if (nib < 10) | |
c5aa993b | 2364 | return '0' + nib; |
c906108c | 2365 | else |
c5aa993b | 2366 | return 'a' + nib - 10; |
c906108c | 2367 | } |
30559e10 MS |
2368 | |
2369 | static int | |
234fa6d1 | 2370 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2371 | { |
2372 | int i; | |
2373 | /* May use a length, or a nul-terminated string as input. */ | |
2374 | if (count == 0) | |
2375 | count = strlen (bin); | |
2376 | ||
2377 | for (i = 0; i < count; i++) | |
2378 | { | |
2379 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2380 | *hex++ = tohex (*bin++ & 0xf); | |
2381 | } | |
2382 | *hex = 0; | |
2383 | return i; | |
2384 | } | |
c906108c | 2385 | \f |
506fb367 DJ |
2386 | /* Check for the availability of vCont. This function should also check |
2387 | the response. */ | |
c906108c SS |
2388 | |
2389 | static void | |
506fb367 | 2390 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2391 | { |
506fb367 DJ |
2392 | strcpy (buf, "vCont?"); |
2393 | putpkt (buf); | |
2394 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2395 | |
506fb367 DJ |
2396 | /* Make sure that the features we assume are supported. */ |
2397 | if (strncmp (buf, "vCont", 5) == 0) | |
2398 | { | |
2399 | char *p = &buf[5]; | |
2400 | int support_s, support_S, support_c, support_C; | |
2401 | ||
2402 | support_s = 0; | |
2403 | support_S = 0; | |
2404 | support_c = 0; | |
2405 | support_C = 0; | |
2406 | while (p && *p == ';') | |
2407 | { | |
2408 | p++; | |
2409 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2410 | support_s = 1; | |
2411 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2412 | support_S = 1; | |
2413 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2414 | support_c = 1; | |
2415 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2416 | support_C = 1; | |
2417 | ||
2418 | p = strchr (p, ';'); | |
2419 | } | |
c906108c | 2420 | |
506fb367 DJ |
2421 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2422 | BUF will make packet_ok disable the packet. */ | |
2423 | if (!support_s || !support_S || !support_c || !support_C) | |
2424 | buf[0] = 0; | |
2425 | } | |
c906108c | 2426 | |
506fb367 DJ |
2427 | packet_ok (buf, &remote_protocol_vcont); |
2428 | } | |
c906108c | 2429 | |
506fb367 DJ |
2430 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2431 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2432 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2433 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2434 | signalled is given in the global INFERIOR_PTID. This function returns | |
2435 | non-zero iff it resumes the inferior. | |
44eaed12 | 2436 | |
506fb367 DJ |
2437 | This function issues a strict subset of all possible vCont commands at the |
2438 | moment. */ | |
44eaed12 | 2439 | |
506fb367 DJ |
2440 | static int |
2441 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2442 | { | |
2443 | struct remote_state *rs = get_remote_state (); | |
2444 | int pid = PIDGET (ptid); | |
2963ee1d | 2445 | char *buf = NULL, *outbuf; |
506fb367 | 2446 | struct cleanup *old_cleanup; |
44eaed12 | 2447 | |
506fb367 DJ |
2448 | buf = xmalloc (rs->remote_packet_size); |
2449 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2450 | |
506fb367 DJ |
2451 | if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN) |
2452 | remote_vcont_probe (rs, buf); | |
44eaed12 | 2453 | |
506fb367 DJ |
2454 | if (remote_protocol_vcont.support == PACKET_DISABLE) |
2455 | { | |
2456 | do_cleanups (old_cleanup); | |
2457 | return 0; | |
44eaed12 C |
2458 | } |
2459 | ||
506fb367 DJ |
2460 | /* If we could generate a wider range of packets, we'd have to worry |
2461 | about overflowing BUF. Should there be a generic | |
2462 | "multi-part-packet" packet? */ | |
2463 | ||
2464 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2465 | { |
506fb367 DJ |
2466 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2467 | don't have any PID numbers the inferior will understand. Make sure | |
2468 | to only send forms that do not specify a PID. */ | |
2469 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2470 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2471 | else if (step) |
2963ee1d | 2472 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2473 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2474 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2475 | else |
2963ee1d | 2476 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2477 | } |
2478 | else if (pid == -1) | |
2479 | { | |
2480 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2481 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2482 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2483 | PIDGET (inferior_ptid)); | |
506fb367 | 2484 | else if (step) |
2963ee1d | 2485 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2486 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2487 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2488 | PIDGET (inferior_ptid)); | |
506fb367 | 2489 | else |
2963ee1d | 2490 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2491 | } |
2492 | else | |
506fb367 DJ |
2493 | { |
2494 | /* Scheduler locking; resume only PTID. */ | |
2495 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2496 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2497 | else if (step) |
2963ee1d | 2498 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2499 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2500 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2501 | else |
2963ee1d | 2502 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2503 | } |
c906108c | 2504 | |
2963ee1d DJ |
2505 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
2506 | make_cleanup (xfree, outbuf); | |
2507 | ||
2508 | putpkt (outbuf); | |
506fb367 DJ |
2509 | |
2510 | do_cleanups (old_cleanup); | |
2511 | ||
2512 | return 1; | |
c906108c | 2513 | } |
43ff13b4 | 2514 | |
506fb367 DJ |
2515 | /* Tell the remote machine to resume. */ |
2516 | ||
2517 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2518 | ||
2519 | static int last_sent_step; | |
2520 | ||
43ff13b4 | 2521 | static void |
506fb367 | 2522 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2523 | { |
d01949b6 AC |
2524 | struct remote_state *rs = get_remote_state (); |
2525 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2526 | int pid = PIDGET (ptid); |
44eaed12 | 2527 | char *p; |
43ff13b4 | 2528 | |
43ff13b4 JM |
2529 | last_sent_signal = siggnal; |
2530 | last_sent_step = step; | |
2531 | ||
2532 | /* A hook for when we need to do something at the last moment before | |
2533 | resumption. */ | |
9a4105ab AC |
2534 | if (deprecated_target_resume_hook) |
2535 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2536 | |
506fb367 DJ |
2537 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2538 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2539 | return; | |
2540 | ||
2541 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2542 | if (pid == -1) | |
2543 | set_thread (0, 0); /* run any thread */ | |
2544 | else | |
2545 | set_thread (pid, 0); /* run this thread */ | |
2546 | ||
43ff13b4 JM |
2547 | if (siggnal != TARGET_SIGNAL_0) |
2548 | { | |
2549 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2550 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2551 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2552 | buf[3] = '\0'; |
2553 | } | |
2554 | else | |
c5aa993b | 2555 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2556 | |
44eaed12 | 2557 | putpkt (buf); |
506fb367 DJ |
2558 | } |
2559 | ||
2560 | /* Same as remote_resume, but with async support. */ | |
2561 | static void | |
2562 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2563 | { | |
2564 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2565 | |
2acceee2 JM |
2566 | /* We are about to start executing the inferior, let's register it |
2567 | with the event loop. NOTE: this is the one place where all the | |
2568 | execution commands end up. We could alternatively do this in each | |
2569 | of the execution commands in infcmd.c.*/ | |
2570 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2571 | into infcmd.c in order to allow inferior function calls to work | |
2572 | NOT asynchronously. */ | |
362646f5 | 2573 | if (target_can_async_p ()) |
2acceee2 JM |
2574 | target_async (inferior_event_handler, 0); |
2575 | /* Tell the world that the target is now executing. */ | |
2576 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2577 | this? Instead, should the client of target just assume (for | |
2578 | async targets) that the target is going to start executing? Is | |
2579 | this information already found in the continuation block? */ | |
ed9a39eb | 2580 | if (target_is_async_p ()) |
2acceee2 | 2581 | target_executing = 1; |
43ff13b4 | 2582 | } |
c906108c | 2583 | \f |
43ff13b4 JM |
2584 | |
2585 | /* Set up the signal handler for SIGINT, while the target is | |
2586 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2587 | static void | |
fba45db2 | 2588 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2589 | { |
c5aa993b | 2590 | sigint_remote_token = |
43ff13b4 JM |
2591 | create_async_signal_handler (async_remote_interrupt, NULL); |
2592 | signal (SIGINT, handle_remote_sigint); | |
2593 | } | |
2594 | ||
2595 | /* Signal handler for SIGINT, while the target is executing. */ | |
2596 | static void | |
fba45db2 | 2597 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2598 | { |
2599 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2600 | sigint_remote_twice_token = |
43ff13b4 JM |
2601 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2602 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2603 | } | |
2604 | ||
2605 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2606 | sent once. It will take effect the second time that the user sends | |
2607 | a ^C. */ | |
2608 | static void | |
fba45db2 | 2609 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2610 | { |
2611 | signal (sig, handle_sigint); | |
c5aa993b | 2612 | sigint_remote_twice_token = |
2df3850c | 2613 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2614 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2615 | } | |
2616 | ||
6426a772 | 2617 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2618 | to a ^C. */ |
c5aa993b | 2619 | static void |
fba45db2 | 2620 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2621 | { |
2622 | if (remote_debug) | |
2623 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2624 | ||
2625 | target_stop (); | |
2626 | } | |
2627 | ||
2628 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2629 | up on the target alltogether. */ | |
2df3850c | 2630 | void |
fba45db2 | 2631 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2632 | { |
2df3850c JM |
2633 | if (remote_debug) |
2634 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2635 | /* Do something only if the target was not killed by the previous |
2636 | cntl-C. */ | |
2637 | if (target_executing) | |
2638 | { | |
2639 | interrupt_query (); | |
2640 | signal (SIGINT, handle_remote_sigint); | |
2641 | } | |
43ff13b4 JM |
2642 | } |
2643 | ||
2644 | /* Reinstall the usual SIGINT handlers, after the target has | |
2645 | stopped. */ | |
6426a772 JM |
2646 | static void |
2647 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2648 | { |
2649 | signal (SIGINT, handle_sigint); | |
2650 | if (sigint_remote_twice_token) | |
c2c6d25f | 2651 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2652 | if (sigint_remote_token) |
c2c6d25f | 2653 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2654 | } |
2655 | ||
c906108c SS |
2656 | /* Send ^C to target to halt it. Target will respond, and send us a |
2657 | packet. */ | |
507f3c78 | 2658 | static void (*ofunc) (int); |
c906108c | 2659 | |
7a292a7a SS |
2660 | /* The command line interface's stop routine. This function is installed |
2661 | as a signal handler for SIGINT. The first time a user requests a | |
2662 | stop, we call remote_stop to send a break or ^C. If there is no | |
2663 | response from the target (it didn't stop when the user requested it), | |
2664 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2665 | static void |
fba45db2 | 2666 | remote_interrupt (int signo) |
c906108c | 2667 | { |
7a292a7a SS |
2668 | /* If this doesn't work, try more severe steps. */ |
2669 | signal (signo, remote_interrupt_twice); | |
2670 | ||
2671 | if (remote_debug) | |
0f71a2f6 | 2672 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2673 | |
2674 | target_stop (); | |
2675 | } | |
2676 | ||
2677 | /* The user typed ^C twice. */ | |
2678 | ||
2679 | static void | |
fba45db2 | 2680 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2681 | { |
2682 | signal (signo, ofunc); | |
2683 | interrupt_query (); | |
c906108c SS |
2684 | signal (signo, remote_interrupt); |
2685 | } | |
7a292a7a SS |
2686 | |
2687 | /* This is the generic stop called via the target vector. When a target | |
2688 | interrupt is requested, either by the command line or the GUI, we | |
2689 | will eventually end up here. */ | |
c906108c | 2690 | static void |
fba45db2 | 2691 | remote_stop (void) |
c906108c | 2692 | { |
7a292a7a SS |
2693 | /* Send a break or a ^C, depending on user preference. */ |
2694 | if (remote_debug) | |
0f71a2f6 | 2695 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2696 | |
7a292a7a | 2697 | if (remote_break) |
2cd58942 | 2698 | serial_send_break (remote_desc); |
c906108c | 2699 | else |
2cd58942 | 2700 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2701 | } |
2702 | ||
2703 | /* Ask the user what to do when an interrupt is received. */ | |
2704 | ||
2705 | static void | |
fba45db2 | 2706 | interrupt_query (void) |
c906108c SS |
2707 | { |
2708 | target_terminal_ours (); | |
2709 | ||
2710 | if (query ("Interrupted while waiting for the program.\n\ | |
2711 | Give up (and stop debugging it)? ")) | |
2712 | { | |
2713 | target_mourn_inferior (); | |
b5a2688f | 2714 | throw_exception (RETURN_QUIT); |
c906108c SS |
2715 | } |
2716 | ||
2717 | target_terminal_inferior (); | |
2718 | } | |
2719 | ||
6426a772 JM |
2720 | /* Enable/disable target terminal ownership. Most targets can use |
2721 | terminal groups to control terminal ownership. Remote targets are | |
2722 | different in that explicit transfer of ownership to/from GDB/target | |
2723 | is required. */ | |
2724 | ||
2725 | static void | |
2726 | remote_async_terminal_inferior (void) | |
2727 | { | |
2728 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2729 | sync_execution here. This function should only be called when | |
2730 | GDB is resuming the inferior in the forground. A background | |
2731 | resume (``run&'') should leave GDB in control of the terminal and | |
2732 | consequently should not call this code. */ | |
2733 | if (!sync_execution) | |
2734 | return; | |
2735 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2736 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2737 | to an asynchronous target with a synchronous command calls this | |
2738 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2739 | stops trying to transfer the terminal to the target when it | |
2740 | shouldn't this guard can go away. */ | |
2741 | if (!remote_async_terminal_ours_p) | |
2742 | return; | |
2743 | delete_file_handler (input_fd); | |
2744 | remote_async_terminal_ours_p = 0; | |
2745 | initialize_sigint_signal_handler (); | |
2746 | /* NOTE: At this point we could also register our selves as the | |
2747 | recipient of all input. Any characters typed could then be | |
2748 | passed on down to the target. */ | |
2749 | } | |
2750 | ||
2751 | static void | |
2752 | remote_async_terminal_ours (void) | |
2753 | { | |
2754 | /* See FIXME in remote_async_terminal_inferior. */ | |
2755 | if (!sync_execution) | |
2756 | return; | |
2757 | /* See FIXME in remote_async_terminal_inferior. */ | |
2758 | if (remote_async_terminal_ours_p) | |
2759 | return; | |
2760 | cleanup_sigint_signal_handler (NULL); | |
2761 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2762 | remote_async_terminal_ours_p = 1; | |
2763 | } | |
2764 | ||
c906108c SS |
2765 | /* If nonzero, ignore the next kill. */ |
2766 | ||
2767 | int kill_kludge; | |
2768 | ||
2769 | void | |
917317f4 | 2770 | remote_console_output (char *msg) |
c906108c SS |
2771 | { |
2772 | char *p; | |
2773 | ||
c5aa993b | 2774 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2775 | { |
2776 | char tb[2]; | |
2777 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2778 | tb[0] = c; | |
2779 | tb[1] = 0; | |
43ff13b4 | 2780 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2781 | } |
917317f4 | 2782 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2783 | } |
2784 | ||
0f71a2f6 JM |
2785 | /* Wait until the remote machine stops, then return, |
2786 | storing status in STATUS just as `wait' would. | |
802188a7 | 2787 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2788 | remote OS, is the thread-id. */ |
c906108c | 2789 | |
39f77062 KB |
2790 | static ptid_t |
2791 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2792 | { |
d01949b6 AC |
2793 | struct remote_state *rs = get_remote_state (); |
2794 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2795 | ULONGEST thread_num = -1; |
3c3bea1c | 2796 | ULONGEST addr; |
c906108c SS |
2797 | |
2798 | status->kind = TARGET_WAITKIND_EXITED; | |
2799 | status->value.integer = 0; | |
2800 | ||
2801 | while (1) | |
2802 | { | |
2803 | unsigned char *p; | |
2804 | ||
c906108c | 2805 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2806 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2807 | signal (SIGINT, ofunc); |
2808 | ||
2809 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2810 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2811 | if (deprecated_target_wait_loop_hook) |
2812 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2813 | |
3c3bea1c GS |
2814 | remote_stopped_by_watchpoint_p = 0; |
2815 | ||
c906108c SS |
2816 | switch (buf[0]) |
2817 | { | |
2818 | case 'E': /* Error of some sort */ | |
2819 | warning ("Remote failure reply: %s", buf); | |
2820 | continue; | |
449092f6 CV |
2821 | case 'F': /* File-I/O request */ |
2822 | remote_fileio_request (buf); | |
2823 | continue; | |
c906108c SS |
2824 | case 'T': /* Status with PC, SP, FP, ... */ |
2825 | { | |
2826 | int i; | |
d9d9c31f | 2827 | char regs[MAX_REGISTER_SIZE]; |
c906108c SS |
2828 | |
2829 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2830 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2831 | ss = signal number |
2832 | n... = register number | |
2833 | r... = register contents | |
2834 | */ | |
c906108c SS |
2835 | p = &buf[3]; /* after Txx */ |
2836 | ||
2837 | while (*p) | |
2838 | { | |
2839 | unsigned char *p1; | |
2840 | char *p_temp; | |
97345198 | 2841 | int fieldsize; |
3c3bea1c GS |
2842 | LONGEST pnum = 0; |
2843 | ||
2844 | /* If the packet contains a register number save it in pnum | |
802188a7 | 2845 | and set p1 to point to the character following it. |
3c3bea1c | 2846 | Otherwise p1 points to p. */ |
c906108c | 2847 | |
3c3bea1c GS |
2848 | /* If this packet is an awatch packet, don't parse the 'a' |
2849 | as a register number. */ | |
2850 | ||
2851 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2852 | { | |
2853 | /* Read the ``P'' register number. */ | |
2854 | pnum = strtol (p, &p_temp, 16); | |
2855 | p1 = (unsigned char *) p_temp; | |
2856 | } | |
802188a7 | 2857 | else |
3c3bea1c | 2858 | p1 = p; |
c906108c | 2859 | |
c5aa993b | 2860 | if (p1 == p) /* No register number present here */ |
c906108c | 2861 | { |
3c3bea1c | 2862 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c SS |
2863 | if (p1 == NULL) |
2864 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2865 | Packet: '%s'\n", | |
2866 | p, buf); | |
3c3bea1c | 2867 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2868 | { |
2869 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2870 | record_currthread (thread_num); | |
2871 | p = (unsigned char *) p_temp; | |
2872 | } | |
3c3bea1c GS |
2873 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2874 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2875 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2876 | { | |
2877 | remote_stopped_by_watchpoint_p = 1; | |
2878 | p = unpack_varlen_hex (++p1, &addr); | |
2879 | remote_watch_data_address = (CORE_ADDR)addr; | |
2880 | } | |
2881 | else | |
2882 | { | |
2883 | /* Silently skip unknown optional info. */ | |
2884 | p_temp = strchr (p1 + 1, ';'); | |
2885 | if (p_temp) | |
2886 | p = (unsigned char *) p_temp; | |
2887 | } | |
c906108c SS |
2888 | } |
2889 | else | |
2890 | { | |
ad10f812 | 2891 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2892 | p = p1; |
2893 | ||
2894 | if (*p++ != ':') | |
3fcb8548 AC |
2895 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
2896 | p, buf); | |
c906108c | 2897 | |
ad10f812 | 2898 | if (reg == NULL) |
3fcb8548 AC |
2899 | error ("Remote sent bad register number %s: %s\nPacket: '%s'\n", |
2900 | phex_nz (pnum, 0), p, buf); | |
c906108c | 2901 | |
3acba339 | 2902 | fieldsize = hex2bin (p, regs, register_size (current_gdbarch, reg->regnum)); |
97345198 | 2903 | p += 2 * fieldsize; |
3acba339 | 2904 | if (fieldsize < register_size (current_gdbarch, reg->regnum)) |
30559e10 | 2905 | warning ("Remote reply is too short: %s", buf); |
23a6d369 | 2906 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
c906108c SS |
2907 | } |
2908 | ||
2909 | if (*p++ != ';') | |
3fcb8548 | 2910 | error ("Remote register badly formatted: %s\nhere: %s", buf, p); |
c906108c SS |
2911 | } |
2912 | } | |
2913 | /* fall through */ | |
2914 | case 'S': /* Old style status, just signal only */ | |
2915 | status->kind = TARGET_WAITKIND_STOPPED; | |
2916 | status->value.sig = (enum target_signal) | |
2917 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2918 | ||
0f71a2f6 JM |
2919 | if (buf[3] == 'p') |
2920 | { | |
0f71a2f6 JM |
2921 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2922 | record_currthread (thread_num); | |
2923 | } | |
c906108c SS |
2924 | goto got_status; |
2925 | case 'W': /* Target exited */ | |
2926 | { | |
2927 | /* The remote process exited. */ | |
2928 | status->kind = TARGET_WAITKIND_EXITED; | |
2929 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2930 | goto got_status; | |
2931 | } | |
2932 | case 'X': | |
2933 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2934 | status->value.sig = (enum target_signal) | |
2935 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2936 | kill_kludge = 1; | |
2937 | ||
2938 | goto got_status; | |
2939 | case 'O': /* Console output */ | |
2940 | remote_console_output (buf + 1); | |
2941 | continue; | |
2942 | case '\0': | |
2943 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2944 | { | |
2945 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2946 | the remote system doesn't support it. */ |
c906108c SS |
2947 | target_terminal_ours_for_output (); |
2948 | printf_filtered | |
2949 | ("Can't send signals to this remote system. %s not sent.\n", | |
2950 | target_signal_to_name (last_sent_signal)); | |
2951 | last_sent_signal = TARGET_SIGNAL_0; | |
2952 | target_terminal_inferior (); | |
2953 | ||
2954 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2955 | putpkt ((char *) buf); | |
2956 | continue; | |
2957 | } | |
2958 | /* else fallthrough */ | |
2959 | default: | |
2960 | warning ("Invalid remote reply: %s", buf); | |
2961 | continue; | |
2962 | } | |
2963 | } | |
c5aa993b | 2964 | got_status: |
c906108c SS |
2965 | if (thread_num != -1) |
2966 | { | |
39f77062 | 2967 | return pid_to_ptid (thread_num); |
c906108c | 2968 | } |
39f77062 | 2969 | return inferior_ptid; |
c906108c SS |
2970 | } |
2971 | ||
43ff13b4 | 2972 | /* Async version of remote_wait. */ |
39f77062 KB |
2973 | static ptid_t |
2974 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 2975 | { |
d01949b6 AC |
2976 | struct remote_state *rs = get_remote_state (); |
2977 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2978 | ULONGEST thread_num = -1; |
3c3bea1c | 2979 | ULONGEST addr; |
43ff13b4 JM |
2980 | |
2981 | status->kind = TARGET_WAITKIND_EXITED; | |
2982 | status->value.integer = 0; | |
2983 | ||
3c3bea1c GS |
2984 | remote_stopped_by_watchpoint_p = 0; |
2985 | ||
43ff13b4 JM |
2986 | while (1) |
2987 | { | |
2988 | unsigned char *p; | |
c5aa993b | 2989 | |
ed9a39eb | 2990 | if (!target_is_async_p ()) |
43ff13b4 | 2991 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2992 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2993 | _never_ wait for ever -> test on target_is_async_p(). | |
2994 | However, before we do that we need to ensure that the caller | |
2995 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 2996 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 2997 | if (!target_is_async_p ()) |
43ff13b4 JM |
2998 | signal (SIGINT, ofunc); |
2999 | ||
3000 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3001 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3002 | if (deprecated_target_wait_loop_hook) |
3003 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3004 | |
3005 | switch (buf[0]) | |
3006 | { | |
3007 | case 'E': /* Error of some sort */ | |
3008 | warning ("Remote failure reply: %s", buf); | |
3009 | continue; | |
449092f6 CV |
3010 | case 'F': /* File-I/O request */ |
3011 | remote_fileio_request (buf); | |
3012 | continue; | |
43ff13b4 JM |
3013 | case 'T': /* Status with PC, SP, FP, ... */ |
3014 | { | |
3015 | int i; | |
d9d9c31f | 3016 | char regs[MAX_REGISTER_SIZE]; |
43ff13b4 JM |
3017 | |
3018 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3019 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3020 | ss = signal number |
3021 | n... = register number | |
3022 | r... = register contents | |
3023 | */ | |
43ff13b4 JM |
3024 | p = &buf[3]; /* after Txx */ |
3025 | ||
3026 | while (*p) | |
3027 | { | |
3028 | unsigned char *p1; | |
3029 | char *p_temp; | |
6c3f2dbf | 3030 | int fieldsize; |
3c3bea1c | 3031 | long pnum = 0; |
43ff13b4 | 3032 | |
3c3bea1c | 3033 | /* If the packet contains a register number, save it in pnum |
802188a7 | 3034 | and set p1 to point to the character following it. |
3c3bea1c GS |
3035 | Otherwise p1 points to p. */ |
3036 | ||
3037 | /* If this packet is an awatch packet, don't parse the 'a' | |
3038 | as a register number. */ | |
802188a7 | 3039 | |
3c3bea1c GS |
3040 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3041 | { | |
3042 | /* Read the register number. */ | |
3043 | pnum = strtol (p, &p_temp, 16); | |
3044 | p1 = (unsigned char *) p_temp; | |
3045 | } | |
802188a7 | 3046 | else |
3c3bea1c | 3047 | p1 = p; |
43ff13b4 | 3048 | |
c5aa993b | 3049 | if (p1 == p) /* No register number present here */ |
43ff13b4 | 3050 | { |
3c3bea1c | 3051 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 | 3052 | if (p1 == NULL) |
3fcb8548 AC |
3053 | error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n", |
3054 | p, buf); | |
3c3bea1c | 3055 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3056 | { |
3057 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3058 | record_currthread (thread_num); | |
3059 | p = (unsigned char *) p_temp; | |
3060 | } | |
3c3bea1c GS |
3061 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3062 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3063 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3064 | { | |
3065 | remote_stopped_by_watchpoint_p = 1; | |
3066 | p = unpack_varlen_hex (++p1, &addr); | |
3067 | remote_watch_data_address = (CORE_ADDR)addr; | |
3068 | } | |
3069 | else | |
3070 | { | |
3071 | /* Silently skip unknown optional info. */ | |
3072 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3073 | if (p_temp) | |
3074 | p = p_temp; | |
3075 | } | |
43ff13b4 | 3076 | } |
802188a7 | 3077 | |
43ff13b4 JM |
3078 | else |
3079 | { | |
ad10f812 | 3080 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3081 | p = p1; |
43ff13b4 | 3082 | if (*p++ != ':') |
3fcb8548 AC |
3083 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
3084 | p, buf); | |
43ff13b4 | 3085 | |
ad10f812 | 3086 | if (reg == NULL) |
3fcb8548 AC |
3087 | error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n", |
3088 | pnum, p, buf); | |
43ff13b4 | 3089 | |
3acba339 | 3090 | fieldsize = hex2bin (p, regs, register_size (current_gdbarch, reg->regnum)); |
6c3f2dbf | 3091 | p += 2 * fieldsize; |
3acba339 | 3092 | if (fieldsize < register_size (current_gdbarch, reg->regnum)) |
30559e10 | 3093 | warning ("Remote reply is too short: %s", buf); |
23a6d369 | 3094 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3095 | } |
3096 | ||
3097 | if (*p++ != ';') | |
0a2cfde4 AC |
3098 | error ("Remote register badly formatted: %s\nhere: %s", |
3099 | buf, p); | |
43ff13b4 JM |
3100 | } |
3101 | } | |
3102 | /* fall through */ | |
3103 | case 'S': /* Old style status, just signal only */ | |
3104 | status->kind = TARGET_WAITKIND_STOPPED; | |
3105 | status->value.sig = (enum target_signal) | |
3106 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3107 | ||
3108 | if (buf[3] == 'p') | |
3109 | { | |
43ff13b4 JM |
3110 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3111 | record_currthread (thread_num); | |
3112 | } | |
43ff13b4 | 3113 | goto got_status; |
43ff13b4 JM |
3114 | case 'W': /* Target exited */ |
3115 | { | |
3116 | /* The remote process exited. */ | |
3117 | status->kind = TARGET_WAITKIND_EXITED; | |
3118 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3119 | goto got_status; | |
3120 | } | |
3121 | case 'X': | |
3122 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3123 | status->value.sig = (enum target_signal) | |
3124 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3125 | kill_kludge = 1; | |
3126 | ||
3127 | goto got_status; | |
3128 | case 'O': /* Console output */ | |
3129 | remote_console_output (buf + 1); | |
c4093a6a JM |
3130 | /* Return immediately to the event loop. The event loop will |
3131 | still be waiting on the inferior afterwards. */ | |
3132 | status->kind = TARGET_WAITKIND_IGNORE; | |
3133 | goto got_status; | |
43ff13b4 JM |
3134 | case '\0': |
3135 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3136 | { | |
3137 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3138 | the remote system doesn't support it. */ |
43ff13b4 JM |
3139 | target_terminal_ours_for_output (); |
3140 | printf_filtered | |
3141 | ("Can't send signals to this remote system. %s not sent.\n", | |
3142 | target_signal_to_name (last_sent_signal)); | |
3143 | last_sent_signal = TARGET_SIGNAL_0; | |
3144 | target_terminal_inferior (); | |
3145 | ||
3146 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3147 | putpkt ((char *) buf); | |
3148 | continue; | |
3149 | } | |
3150 | /* else fallthrough */ | |
3151 | default: | |
3152 | warning ("Invalid remote reply: %s", buf); | |
3153 | continue; | |
3154 | } | |
3155 | } | |
c5aa993b | 3156 | got_status: |
43ff13b4 JM |
3157 | if (thread_num != -1) |
3158 | { | |
39f77062 | 3159 | return pid_to_ptid (thread_num); |
43ff13b4 | 3160 | } |
39f77062 | 3161 | return inferior_ptid; |
43ff13b4 JM |
3162 | } |
3163 | ||
c906108c SS |
3164 | /* Number of bytes of registers this stub implements. */ |
3165 | ||
3166 | static int register_bytes_found; | |
3167 | ||
3168 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3169 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3170 | |
b96ec7ac AC |
3171 | static int |
3172 | fetch_register_using_p (int regnum) | |
3173 | { | |
3174 | struct remote_state *rs = get_remote_state (); | |
3175 | char *buf = alloca (rs->remote_packet_size), *p; | |
3176 | char regp[MAX_REGISTER_SIZE]; | |
3177 | int i; | |
3178 | ||
3179 | buf[0] = 'p'; | |
3180 | bin2hex((char *) ®num, &buf[1], sizeof(regnum)); | |
3181 | buf[9] = 0; | |
3182 | remote_send (buf, rs->remote_packet_size); | |
3183 | if (buf[0] != 0 && buf[0] != 'E') { | |
3184 | p = buf; | |
3185 | i = 0; | |
3186 | while (p[0] != 0) { | |
3187 | if (p[1] == 0) { | |
3188 | error("fetch_register_using_p: early buf termination"); | |
3189 | return 0; | |
3190 | } | |
3191 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3192 | p += 2; | |
3193 | } | |
3194 | regcache_raw_supply (current_regcache, regnum, regp); | |
3195 | return 1; | |
3196 | } | |
3197 | ||
3198 | return 0; | |
3199 | } | |
3200 | ||
c906108c | 3201 | static void |
ad10f812 | 3202 | remote_fetch_registers (int regnum) |
c906108c | 3203 | { |
d01949b6 AC |
3204 | struct remote_state *rs = get_remote_state (); |
3205 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3206 | int i; |
3207 | char *p; | |
ad10f812 | 3208 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3209 | |
39f77062 | 3210 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3211 | |
b323314b AC |
3212 | if (regnum >= 0) |
3213 | { | |
3214 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3215 | gdb_assert (reg != NULL); | |
3216 | if (!reg->in_g_packet) | |
3217 | internal_error (__FILE__, __LINE__, | |
3218 | "Attempt to fetch a non G-packet register when this " | |
3219 | "remote.c does not support the p-packet."); | |
3220 | } | |
b96ec7ac AC |
3221 | switch (remote_protocol_p.support) |
3222 | { | |
3223 | case PACKET_DISABLE: | |
3224 | break; | |
3225 | case PACKET_ENABLE: | |
3226 | if (fetch_register_using_p (regnum)) | |
3227 | return; | |
3228 | else | |
3229 | error ("Protocol error: p packet not recognized by stub"); | |
3230 | case PACKET_SUPPORT_UNKNOWN: | |
3231 | if (fetch_register_using_p (regnum)) | |
3232 | { | |
3233 | /* The stub recognized the 'p' packet. Remember this. */ | |
3234 | remote_protocol_p.support = PACKET_ENABLE; | |
3235 | return; | |
3236 | } | |
3237 | else | |
3238 | { | |
3239 | /* The stub does not support the 'P' packet. Use 'G' | |
3240 | instead, and don't try using 'P' in the future (it | |
3241 | will just waste our time). */ | |
3242 | remote_protocol_p.support = PACKET_DISABLE; | |
3243 | break; | |
3244 | } | |
3245 | } | |
b323314b | 3246 | |
c906108c | 3247 | sprintf (buf, "g"); |
d01949b6 | 3248 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3249 | |
11cf8741 JM |
3250 | /* Save the size of the packet sent to us by the target. Its used |
3251 | as a heuristic when determining the max size of packets that the | |
3252 | target can safely receive. */ | |
d01949b6 AC |
3253 | if ((rs->actual_register_packet_size) == 0) |
3254 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3255 | |
3256 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3257 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3258 | |
3259 | /* We can get out of synch in various cases. If the first character | |
3260 | in the buffer is not a hex character, assume that has happened | |
3261 | and try to fetch another packet to read. */ | |
3262 | while ((buf[0] < '0' || buf[0] > '9') | |
3263 | && (buf[0] < 'a' || buf[0] > 'f') | |
3264 | && buf[0] != 'x') /* New: unavailable register value */ | |
3265 | { | |
3266 | if (remote_debug) | |
0f71a2f6 JM |
3267 | fprintf_unfiltered (gdb_stdlog, |
3268 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3269 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3270 | } |
3271 | ||
3272 | /* Reply describes registers byte by byte, each byte encoded as two | |
3273 | hex characters. Suck them all up, then supply them to the | |
3274 | register cacheing/storage mechanism. */ | |
3275 | ||
3276 | p = buf; | |
ad10f812 | 3277 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3278 | { |
3279 | if (p[0] == 0) | |
3280 | break; | |
3281 | if (p[1] == 0) | |
3282 | { | |
3283 | warning ("Remote reply is of odd length: %s", buf); | |
3284 | /* Don't change register_bytes_found in this case, and don't | |
3285 | print a second warning. */ | |
3286 | goto supply_them; | |
3287 | } | |
3288 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3289 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3290 | else |
3291 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3292 | p += 2; | |
3293 | } | |
3294 | ||
3295 | if (i != register_bytes_found) | |
3296 | { | |
3297 | register_bytes_found = i; | |
2649061d AC |
3298 | if (REGISTER_BYTES_OK_P () |
3299 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3300 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3301 | } |
c5aa993b | 3302 | |
b323314b | 3303 | supply_them: |
ad10f812 | 3304 | { |
b323314b AC |
3305 | int i; |
3306 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3307 | { |
b323314b AC |
3308 | struct packet_reg *r = &rs->regs[i]; |
3309 | if (r->in_g_packet) | |
3310 | { | |
8ccc1287 AC |
3311 | if (r->offset * 2 >= strlen (buf)) |
3312 | /* A short packet that didn't include the register's | |
3313 | value, this implies that the register is zero (and | |
3314 | not that the register is unavailable). Supply that | |
3315 | zero value. */ | |
3316 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3317 | else if (buf[r->offset * 2] == 'x') | |
3318 | { | |
3319 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3320 | /* The register isn't available, mark it as such (at | |
3321 | the same time setting the value to zero). */ | |
3322 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3323 | set_register_cached (i, -1); | |
3324 | } | |
3325 | else | |
3326 | regcache_raw_supply (current_regcache, r->regnum, | |
3327 | regs + r->offset); | |
b323314b | 3328 | } |
ad10f812 AC |
3329 | } |
3330 | } | |
c906108c SS |
3331 | } |
3332 | ||
3333 | /* Prepare to store registers. Since we may send them all (using a | |
3334 | 'G' request), we have to read out the ones we don't want to change | |
3335 | first. */ | |
3336 | ||
c5aa993b | 3337 | static void |
fba45db2 | 3338 | remote_prepare_to_store (void) |
c906108c | 3339 | { |
cf0e1e0d DJ |
3340 | struct remote_state *rs = get_remote_state (); |
3341 | int i; | |
3342 | char buf[MAX_REGISTER_SIZE]; | |
3343 | ||
c906108c | 3344 | /* Make sure the entire registers array is valid. */ |
5a2468f5 JM |
3345 | switch (remote_protocol_P.support) |
3346 | { | |
3347 | case PACKET_DISABLE: | |
3348 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3349 | /* Make sure all the necessary registers are cached. */ |
3350 | for (i = 0; i < NUM_REGS; i++) | |
3351 | if (rs->regs[i].in_g_packet) | |
3352 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3353 | break; |
3354 | case PACKET_ENABLE: | |
3355 | break; | |
3356 | } | |
3357 | } | |
3358 | ||
ad10f812 | 3359 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
5a2468f5 JM |
3360 | packet was not recognized. */ |
3361 | ||
3362 | static int | |
ad10f812 | 3363 | store_register_using_P (int regnum) |
5a2468f5 | 3364 | { |
d01949b6 | 3365 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3366 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3367 | /* Try storing a single register. */ |
d01949b6 | 3368 | char *buf = alloca (rs->remote_packet_size); |
d9d9c31f | 3369 | char regp[MAX_REGISTER_SIZE]; |
5a2468f5 JM |
3370 | char *p; |
3371 | int i; | |
3372 | ||
ad10f812 | 3373 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3374 | p = buf + strlen (buf); |
822c9732 | 3375 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3376 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
ad10f812 | 3377 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3378 | |
3379 | return buf[0] != '\0'; | |
c906108c SS |
3380 | } |
3381 | ||
5a2468f5 | 3382 | |
ad10f812 | 3383 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents |
7302a204 | 3384 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3385 | |
3386 | static void | |
ad10f812 | 3387 | remote_store_registers (int regnum) |
c906108c | 3388 | { |
d01949b6 | 3389 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3390 | char *buf; |
3391 | char *regs; | |
c906108c SS |
3392 | int i; |
3393 | char *p; | |
3394 | ||
39f77062 | 3395 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3396 | |
ad10f812 | 3397 | if (regnum >= 0) |
c906108c | 3398 | { |
5a2468f5 | 3399 | switch (remote_protocol_P.support) |
c906108c | 3400 | { |
5a2468f5 JM |
3401 | case PACKET_DISABLE: |
3402 | break; | |
3403 | case PACKET_ENABLE: | |
ad10f812 | 3404 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3405 | return; |
3406 | else | |
3407 | error ("Protocol error: P packet not recognized by stub"); | |
3408 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3409 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3410 | { |
3411 | /* The stub recognized the 'P' packet. Remember this. */ | |
3412 | remote_protocol_P.support = PACKET_ENABLE; | |
3413 | return; | |
3414 | } | |
3415 | else | |
3416 | { | |
3417 | /* The stub does not support the 'P' packet. Use 'G' | |
3418 | instead, and don't try using 'P' in the future (it | |
3419 | will just waste our time). */ | |
3420 | remote_protocol_P.support = PACKET_DISABLE; | |
3421 | break; | |
3422 | } | |
c906108c | 3423 | } |
c906108c SS |
3424 | } |
3425 | ||
193cb69f AC |
3426 | /* Extract all the registers in the regcache copying them into a |
3427 | local buffer. */ | |
3428 | { | |
b323314b | 3429 | int i; |
ad10f812 AC |
3430 | regs = alloca (rs->sizeof_g_packet); |
3431 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3432 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3433 | { |
b323314b AC |
3434 | struct packet_reg *r = &rs->regs[i]; |
3435 | if (r->in_g_packet) | |
822c9732 | 3436 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3437 | } |
3438 | } | |
c906108c SS |
3439 | |
3440 | /* Command describes registers byte by byte, | |
3441 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3442 | buf = alloca (rs->remote_packet_size); |
3443 | p = buf; | |
3444 | *p++ = 'G'; | |
c906108c | 3445 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3446 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3447 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3448 | } |
c906108c SS |
3449 | \f |
3450 | ||
3451 | /* Return the number of hex digits in num. */ | |
3452 | ||
3453 | static int | |
fba45db2 | 3454 | hexnumlen (ULONGEST num) |
c906108c SS |
3455 | { |
3456 | int i; | |
3457 | ||
3458 | for (i = 0; num != 0; i++) | |
3459 | num >>= 4; | |
3460 | ||
3461 | return max (i, 1); | |
3462 | } | |
3463 | ||
2df3850c | 3464 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3465 | |
3466 | static int | |
fba45db2 | 3467 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3468 | { |
c906108c | 3469 | int len = hexnumlen (num); |
2df3850c JM |
3470 | return hexnumnstr (buf, num, len); |
3471 | } | |
3472 | ||
c906108c | 3473 | |
2df3850c | 3474 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3475 | |
2df3850c | 3476 | static int |
fba45db2 | 3477 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3478 | { |
3479 | int i; | |
3480 | ||
3481 | buf[width] = '\0'; | |
3482 | ||
3483 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3484 | { |
c5aa993b | 3485 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3486 | num >>= 4; |
3487 | } | |
3488 | ||
2df3850c | 3489 | return width; |
c906108c SS |
3490 | } |
3491 | ||
3492 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3493 | ||
3494 | static CORE_ADDR | |
fba45db2 | 3495 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3496 | { |
3497 | if (remote_address_size > 0 | |
3498 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3499 | { | |
3500 | /* Only create a mask when that mask can safely be constructed | |
3501 | in a ULONGEST variable. */ | |
3502 | ULONGEST mask = 1; | |
3503 | mask = (mask << remote_address_size) - 1; | |
3504 | addr &= mask; | |
3505 | } | |
3506 | return addr; | |
3507 | } | |
3508 | ||
3509 | /* Determine whether the remote target supports binary downloading. | |
3510 | This is accomplished by sending a no-op memory write of zero length | |
3511 | to the target at the specified address. It does not suffice to send | |
3512 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3513 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3514 | ||
96baa820 JM |
3515 | NOTE: This can still lose if the serial line is not eight-bit |
3516 | clean. In cases like this, the user should clear "remote | |
3517 | X-packet". */ | |
3518 | ||
c906108c | 3519 | static void |
fba45db2 | 3520 | check_binary_download (CORE_ADDR addr) |
c906108c | 3521 | { |
d01949b6 | 3522 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3523 | switch (remote_protocol_binary_download.support) |
c906108c | 3524 | { |
96baa820 JM |
3525 | case PACKET_DISABLE: |
3526 | break; | |
3527 | case PACKET_ENABLE: | |
3528 | break; | |
3529 | case PACKET_SUPPORT_UNKNOWN: | |
3530 | { | |
d01949b6 | 3531 | char *buf = alloca (rs->remote_packet_size); |
96baa820 | 3532 | char *p; |
802188a7 | 3533 | |
96baa820 JM |
3534 | p = buf; |
3535 | *p++ = 'X'; | |
3536 | p += hexnumstr (p, (ULONGEST) addr); | |
3537 | *p++ = ','; | |
3538 | p += hexnumstr (p, (ULONGEST) 0); | |
3539 | *p++ = ':'; | |
3540 | *p = '\0'; | |
802188a7 | 3541 | |
96baa820 | 3542 | putpkt_binary (buf, (int) (p - buf)); |
d01949b6 | 3543 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3544 | |
96baa820 JM |
3545 | if (buf[0] == '\0') |
3546 | { | |
3547 | if (remote_debug) | |
3548 | fprintf_unfiltered (gdb_stdlog, | |
3549 | "binary downloading NOT suppported by target\n"); | |
3550 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3551 | } | |
3552 | else | |
3553 | { | |
3554 | if (remote_debug) | |
3555 | fprintf_unfiltered (gdb_stdlog, | |
3556 | "binary downloading suppported by target\n"); | |
3557 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3558 | } | |
3559 | break; | |
3560 | } | |
c906108c SS |
3561 | } |
3562 | } | |
3563 | ||
3564 | /* Write memory data directly to the remote machine. | |
3565 | This does not inform the data cache; the data cache uses this. | |
3566 | MEMADDR is the address in the remote memory space. | |
3567 | MYADDR is the address of the buffer in our space. | |
3568 | LEN is the number of bytes. | |
3569 | ||
917317f4 JM |
3570 | Returns number of bytes transferred, or 0 (setting errno) for |
3571 | error. Only transfer a single packet. */ | |
c906108c | 3572 | |
449092f6 | 3573 | int |
917317f4 | 3574 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3575 | { |
917317f4 | 3576 | unsigned char *buf; |
917317f4 JM |
3577 | unsigned char *p; |
3578 | unsigned char *plen; | |
c2d11a7d | 3579 | long sizeof_buf; |
917317f4 JM |
3580 | int plenlen; |
3581 | int todo; | |
3582 | int nr_bytes; | |
a257b5bb AC |
3583 | int payload_size; |
3584 | unsigned char *payload_start; | |
c906108c | 3585 | |
a257b5bb | 3586 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3587 | check_binary_download (memaddr); |
3588 | ||
a257b5bb AC |
3589 | /* Compute the size, and then allocate space for the largest |
3590 | possible packet. Include space for an extra trailing NUL. */ | |
3591 | sizeof_buf = get_memory_write_packet_size () + 1; | |
c2d11a7d | 3592 | buf = alloca (sizeof_buf); |
c906108c | 3593 | |
a257b5bb AC |
3594 | /* Compute the size of the actual payload by subtracting out the |
3595 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ | |
3596 | payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN") | |
3597 | + hexnumlen (memaddr) | |
3598 | + hexnumlen (len))); | |
c906108c | 3599 | |
a257b5bb | 3600 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3601 | |
a257b5bb | 3602 | /* Append "[XM]". Compute a best guess of the number of bytes |
917317f4 | 3603 | actually transfered. */ |
a257b5bb | 3604 | p = buf; |
917317f4 | 3605 | switch (remote_protocol_binary_download.support) |
c906108c | 3606 | { |
917317f4 JM |
3607 | case PACKET_ENABLE: |
3608 | *p++ = 'X'; | |
3609 | /* Best guess at number of bytes that will fit. */ | |
a257b5bb | 3610 | todo = min (len, payload_size); |
917317f4 JM |
3611 | break; |
3612 | case PACKET_DISABLE: | |
3613 | *p++ = 'M'; | |
3614 | /* num bytes that will fit */ | |
a257b5bb | 3615 | todo = min (len, payload_size / 2); |
917317f4 JM |
3616 | break; |
3617 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3618 | internal_error (__FILE__, __LINE__, |
3619 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3620 | default: |
8e65ff28 | 3621 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 | 3622 | } |
802188a7 | 3623 | |
a257b5bb | 3624 | /* Append "<memaddr>". */ |
917317f4 JM |
3625 | memaddr = remote_address_masked (memaddr); |
3626 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3627 | |
3628 | /* Append ",". */ | |
917317f4 | 3629 | *p++ = ','; |
802188a7 | 3630 | |
a257b5bb AC |
3631 | /* Append <len>. Retain the location/size of <len>. It may need to |
3632 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3633 | plen = p; |
3634 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3635 | p += plenlen; | |
a257b5bb AC |
3636 | |
3637 | /* Append ":". */ | |
917317f4 JM |
3638 | *p++ = ':'; |
3639 | *p = '\0'; | |
802188a7 | 3640 | |
a257b5bb AC |
3641 | /* Append the packet body. */ |
3642 | payload_start = p; | |
917317f4 JM |
3643 | switch (remote_protocol_binary_download.support) |
3644 | { | |
3645 | case PACKET_ENABLE: | |
3646 | /* Binary mode. Send target system values byte by byte, in | |
3647 | increasing byte addresses. Only escape certain critical | |
3648 | characters. */ | |
3649 | for (nr_bytes = 0; | |
a257b5bb | 3650 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3651 | nr_bytes++) |
c906108c | 3652 | { |
917317f4 JM |
3653 | switch (myaddr[nr_bytes] & 0xff) |
3654 | { | |
3655 | case '$': | |
3656 | case '#': | |
3657 | case 0x7d: | |
3658 | /* These must be escaped */ | |
3659 | *p++ = 0x7d; | |
3660 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3661 | break; | |
3662 | default: | |
3663 | *p++ = myaddr[nr_bytes] & 0xff; | |
3664 | break; | |
3665 | } | |
c906108c | 3666 | } |
917317f4 | 3667 | if (nr_bytes < todo) |
c906108c | 3668 | { |
802188a7 | 3669 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3670 | and we have actually sent fewer bytes than planned. |
3671 | Fix-up the length field of the packet. Use the same | |
3672 | number of characters as before. */ | |
917317f4 JM |
3673 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3674 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3675 | } |
917317f4 JM |
3676 | break; |
3677 | case PACKET_DISABLE: | |
3678 | /* Normal mode: Send target system values byte by byte, in | |
3679 | increasing byte addresses. Each byte is encoded as a two hex | |
3680 | value. */ | |
2644f393 | 3681 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3682 | p += 2 * nr_bytes; |
917317f4 JM |
3683 | break; |
3684 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3685 | internal_error (__FILE__, __LINE__, |
3686 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3687 | default: |
8e65ff28 | 3688 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3689 | } |
802188a7 | 3690 | |
917317f4 | 3691 | putpkt_binary (buf, (int) (p - buf)); |
c2d11a7d | 3692 | getpkt (buf, sizeof_buf, 0); |
802188a7 | 3693 | |
917317f4 JM |
3694 | if (buf[0] == 'E') |
3695 | { | |
3696 | /* There is no correspondance between what the remote protocol | |
3697 | uses for errors and errno codes. We would like a cleaner way | |
3698 | of representing errors (big enough to include errno codes, | |
3699 | bfd_error codes, and others). But for now just return EIO. */ | |
3700 | errno = EIO; | |
3701 | return 0; | |
3702 | } | |
802188a7 | 3703 | |
917317f4 JM |
3704 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer |
3705 | bytes than we'd planned. */ | |
3706 | return nr_bytes; | |
c906108c SS |
3707 | } |
3708 | ||
3709 | /* Read memory data directly from the remote machine. | |
3710 | This does not use the data cache; the data cache uses this. | |
3711 | MEMADDR is the address in the remote memory space. | |
3712 | MYADDR is the address of the buffer in our space. | |
3713 | LEN is the number of bytes. | |
3714 | ||
3715 | Returns number of bytes transferred, or 0 for error. */ | |
3716 | ||
917317f4 JM |
3717 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3718 | remote targets) shouldn't attempt to read the entire buffer. | |
3719 | Instead it should read a single packet worth of data and then | |
3720 | return the byte size of that packet to the caller. The caller (its | |
3721 | caller and its callers caller ;-) already contains code for | |
3722 | handling partial reads. */ | |
3723 | ||
449092f6 | 3724 | int |
fba45db2 | 3725 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3726 | { |
11cf8741 | 3727 | char *buf; |
c906108c | 3728 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3729 | long sizeof_buf; |
c906108c SS |
3730 | int origlen; |
3731 | ||
11cf8741 JM |
3732 | /* Create a buffer big enough for this packet. */ |
3733 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3734 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3735 | buf = alloca (sizeof_buf); | |
c906108c SS |
3736 | |
3737 | origlen = len; | |
3738 | while (len > 0) | |
3739 | { | |
c906108c SS |
3740 | char *p; |
3741 | int todo; | |
3742 | int i; | |
3743 | ||
c5aa993b | 3744 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3745 | |
3746 | /* construct "m"<memaddr>","<len>" */ | |
3747 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3748 | memaddr = remote_address_masked (memaddr); | |
3749 | p = buf; | |
3750 | *p++ = 'm'; | |
3751 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3752 | *p++ = ','; | |
3753 | p += hexnumstr (p, (ULONGEST) todo); | |
3754 | *p = '\0'; | |
3755 | ||
3756 | putpkt (buf); | |
c2d11a7d | 3757 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3758 | |
66504d44 MS |
3759 | if (buf[0] == 'E' |
3760 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3761 | && buf[3] == '\0') | |
c906108c SS |
3762 | { |
3763 | /* There is no correspondance between what the remote protocol uses | |
3764 | for errors and errno codes. We would like a cleaner way of | |
3765 | representing errors (big enough to include errno codes, bfd_error | |
3766 | codes, and others). But for now just return EIO. */ | |
3767 | errno = EIO; | |
3768 | return 0; | |
3769 | } | |
3770 | ||
c5aa993b JM |
3771 | /* Reply describes memory byte by byte, |
3772 | each byte encoded as two hex characters. */ | |
c906108c SS |
3773 | |
3774 | p = buf; | |
30559e10 | 3775 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3776 | { |
30559e10 MS |
3777 | /* Reply is short. This means that we were able to read |
3778 | only part of what we wanted to. */ | |
3779 | return i + (origlen - len); | |
c906108c SS |
3780 | } |
3781 | myaddr += todo; | |
3782 | memaddr += todo; | |
3783 | len -= todo; | |
3784 | } | |
3785 | return origlen; | |
3786 | } | |
3787 | \f | |
3788 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3789 | transferring to or from debugger address BUFFER. Write to inferior if |
3790 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3791 | for error. TARGET is unused. */ |
392a587b | 3792 | |
c906108c | 3793 | static int |
c338868a | 3794 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 3795 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3796 | struct target_ops *target) |
c906108c | 3797 | { |
392a587b JM |
3798 | CORE_ADDR targ_addr; |
3799 | int targ_len; | |
4930751a C |
3800 | int res; |
3801 | ||
f6684c31 AC |
3802 | /* Should this be the selected frame? */ |
3803 | gdbarch_remote_translate_xfer_address (current_gdbarch, current_regcache, | |
3804 | mem_addr, mem_len, | |
3805 | &targ_addr, &targ_len); | |
392a587b | 3806 | if (targ_len <= 0) |
c906108c | 3807 | return 0; |
c906108c | 3808 | |
4930751a C |
3809 | if (should_write) |
3810 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3811 | else | |
3812 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3813 | ||
3814 | return res; | |
c906108c SS |
3815 | } |
3816 | ||
c906108c | 3817 | static void |
fba45db2 | 3818 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3819 | { |
3820 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3821 | } | |
3822 | \f | |
3823 | /* Stuff for dealing with the packets which are part of this protocol. | |
3824 | See comment at top of file for details. */ | |
3825 | ||
3826 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3827 | ||
3828 | static int | |
fba45db2 | 3829 | readchar (int timeout) |
c906108c SS |
3830 | { |
3831 | int ch; | |
3832 | ||
2cd58942 | 3833 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3834 | |
2acceee2 JM |
3835 | if (ch >= 0) |
3836 | return (ch & 0x7f); | |
3837 | ||
3838 | switch ((enum serial_rc) ch) | |
c906108c SS |
3839 | { |
3840 | case SERIAL_EOF: | |
2acceee2 | 3841 | target_mourn_inferior (); |
c906108c | 3842 | error ("Remote connection closed"); |
2acceee2 | 3843 | /* no return */ |
c906108c SS |
3844 | case SERIAL_ERROR: |
3845 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3846 | /* no return */ |
c906108c | 3847 | case SERIAL_TIMEOUT: |
2acceee2 | 3848 | break; |
c906108c | 3849 | } |
2acceee2 | 3850 | return ch; |
c906108c SS |
3851 | } |
3852 | ||
3853 | /* Send the command in BUF to the remote machine, and read the reply | |
3854 | into BUF. Report an error if we get an error reply. */ | |
3855 | ||
3856 | static void | |
c2d11a7d JM |
3857 | remote_send (char *buf, |
3858 | long sizeof_buf) | |
c906108c SS |
3859 | { |
3860 | putpkt (buf); | |
c2d11a7d | 3861 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3862 | |
3863 | if (buf[0] == 'E') | |
3864 | error ("Remote failure reply: %s", buf); | |
3865 | } | |
3866 | ||
3867 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3868 | string notation. */ | |
3869 | ||
3870 | static void | |
fba45db2 | 3871 | print_packet (char *buf) |
c906108c SS |
3872 | { |
3873 | puts_filtered ("\""); | |
43e526b9 | 3874 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3875 | puts_filtered ("\""); |
3876 | } | |
3877 | ||
3878 | int | |
fba45db2 | 3879 | putpkt (char *buf) |
c906108c SS |
3880 | { |
3881 | return putpkt_binary (buf, strlen (buf)); | |
3882 | } | |
3883 | ||
3884 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 3885 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
3886 | to account for the $, # and checksum, and for a possible /0 if we are |
3887 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3888 | ||
3889 | static int | |
fba45db2 | 3890 | putpkt_binary (char *buf, int cnt) |
c906108c | 3891 | { |
d01949b6 | 3892 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3893 | int i; |
3894 | unsigned char csum = 0; | |
11cf8741 | 3895 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 3896 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 3897 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 3898 | |
c906108c SS |
3899 | int ch; |
3900 | int tcount = 0; | |
3901 | char *p; | |
3902 | ||
3903 | /* Copy the packet into buffer BUF2, encapsulating it | |
3904 | and giving it a checksum. */ | |
3905 | ||
c906108c SS |
3906 | p = buf2; |
3907 | *p++ = '$'; | |
3908 | ||
3909 | for (i = 0; i < cnt; i++) | |
3910 | { | |
3911 | csum += buf[i]; | |
3912 | *p++ = buf[i]; | |
3913 | } | |
3914 | *p++ = '#'; | |
3915 | *p++ = tohex ((csum >> 4) & 0xf); | |
3916 | *p++ = tohex (csum & 0xf); | |
3917 | ||
3918 | /* Send it over and over until we get a positive ack. */ | |
3919 | ||
3920 | while (1) | |
3921 | { | |
3922 | int started_error_output = 0; | |
3923 | ||
3924 | if (remote_debug) | |
3925 | { | |
3926 | *p = '\0'; | |
43e526b9 JM |
3927 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3928 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3929 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3930 | gdb_flush (gdb_stdlog); |
c906108c | 3931 | } |
2cd58942 | 3932 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
3933 | perror_with_name ("putpkt: write failed"); |
3934 | ||
3935 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3936 | while (1) | |
3937 | { | |
3938 | ch = readchar (remote_timeout); | |
3939 | ||
c5aa993b | 3940 | if (remote_debug) |
c906108c SS |
3941 | { |
3942 | switch (ch) | |
3943 | { | |
3944 | case '+': | |
1216fa2c | 3945 | case '-': |
c906108c SS |
3946 | case SERIAL_TIMEOUT: |
3947 | case '$': | |
3948 | if (started_error_output) | |
3949 | { | |
3950 | putchar_unfiltered ('\n'); | |
3951 | started_error_output = 0; | |
3952 | } | |
3953 | } | |
3954 | } | |
3955 | ||
3956 | switch (ch) | |
3957 | { | |
3958 | case '+': | |
3959 | if (remote_debug) | |
0f71a2f6 | 3960 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3961 | return 1; |
1216fa2c AC |
3962 | case '-': |
3963 | if (remote_debug) | |
3964 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3965 | case SERIAL_TIMEOUT: |
c5aa993b | 3966 | tcount++; |
c906108c SS |
3967 | if (tcount > 3) |
3968 | return 0; | |
3969 | break; /* Retransmit buffer */ | |
3970 | case '$': | |
3971 | { | |
40e3f985 FN |
3972 | if (remote_debug) |
3973 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
3974 | /* It's probably an old response, and we're out of sync. |
3975 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 3976 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 3977 | continue; /* Now, go look for + */ |
c906108c SS |
3978 | } |
3979 | default: | |
3980 | if (remote_debug) | |
3981 | { | |
3982 | if (!started_error_output) | |
3983 | { | |
3984 | started_error_output = 1; | |
0f71a2f6 | 3985 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3986 | } |
0f71a2f6 | 3987 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3988 | } |
3989 | continue; | |
3990 | } | |
3991 | break; /* Here to retransmit */ | |
3992 | } | |
3993 | ||
3994 | #if 0 | |
3995 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3996 | able to get out next time we call QUIT, without anything as |
3997 | violent as interrupt_query. If we want to provide a way out of | |
3998 | here without getting to the next QUIT, it should be based on | |
3999 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4000 | if (quit_flag) |
4001 | { | |
4002 | quit_flag = 0; | |
4003 | interrupt_query (); | |
4004 | } | |
4005 | #endif | |
4006 | } | |
4007 | } | |
4008 | ||
4009 | /* Come here after finding the start of the frame. Collect the rest | |
4010 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4011 | compression. No more than sizeof_buf-1 characters are read so that |
4012 | the buffer can be NUL terminated. | |
c906108c | 4013 | |
c2d11a7d JM |
4014 | Returns -1 on error, number of characters in buffer (ignoring the |
4015 | trailing NULL) on success. (could be extended to return one of the | |
4016 | SERIAL status indications). */ | |
4017 | ||
4018 | static long | |
4019 | read_frame (char *buf, | |
4020 | long sizeof_buf) | |
c906108c SS |
4021 | { |
4022 | unsigned char csum; | |
c2d11a7d | 4023 | long bc; |
c906108c SS |
4024 | int c; |
4025 | ||
4026 | csum = 0; | |
c2d11a7d | 4027 | bc = 0; |
c906108c SS |
4028 | |
4029 | while (1) | |
4030 | { | |
c2d11a7d | 4031 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4032 | c = readchar (remote_timeout); |
c906108c SS |
4033 | switch (c) |
4034 | { | |
4035 | case SERIAL_TIMEOUT: | |
4036 | if (remote_debug) | |
0f71a2f6 | 4037 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4038 | return -1; |
c906108c SS |
4039 | case '$': |
4040 | if (remote_debug) | |
0f71a2f6 JM |
4041 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4042 | gdb_stdlog); | |
c2d11a7d | 4043 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4044 | case '#': |
4045 | { | |
4046 | unsigned char pktcsum; | |
e1b09194 AC |
4047 | int check_0 = 0; |
4048 | int check_1 = 0; | |
c906108c | 4049 | |
c2d11a7d | 4050 | buf[bc] = '\0'; |
c906108c | 4051 | |
e1b09194 AC |
4052 | check_0 = readchar (remote_timeout); |
4053 | if (check_0 >= 0) | |
4054 | check_1 = readchar (remote_timeout); | |
802188a7 | 4055 | |
e1b09194 AC |
4056 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4057 | { | |
4058 | if (remote_debug) | |
4059 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4060 | return -1; | |
4061 | } | |
4062 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4063 | { |
4064 | if (remote_debug) | |
4065 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4066 | return -1; | |
4067 | } | |
c906108c | 4068 | |
e1b09194 | 4069 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4070 | if (csum == pktcsum) |
c2d11a7d | 4071 | return bc; |
c906108c | 4072 | |
c5aa993b | 4073 | if (remote_debug) |
c906108c | 4074 | { |
0f71a2f6 | 4075 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4076 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4077 | pktcsum, csum); |
4078 | fputs_filtered (buf, gdb_stdlog); | |
4079 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4080 | } |
c2d11a7d JM |
4081 | /* Number of characters in buffer ignoring trailing |
4082 | NUL. */ | |
4083 | return -1; | |
c906108c SS |
4084 | } |
4085 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4086 | { |
4087 | int repeat; | |
4088 | csum += c; | |
c906108c | 4089 | |
b4501125 AC |
4090 | c = readchar (remote_timeout); |
4091 | csum += c; | |
4092 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
c906108c | 4093 | |
c2d11a7d JM |
4094 | /* The character before ``*'' is repeated. */ |
4095 | ||
802188a7 | 4096 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4097 | && bc > 0 |
fb6e5c55 | 4098 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4099 | { |
c2d11a7d JM |
4100 | memset (&buf[bc], buf[bc - 1], repeat); |
4101 | bc += repeat; | |
c2c6d25f JM |
4102 | continue; |
4103 | } | |
4104 | ||
c2d11a7d | 4105 | buf[bc] = '\0'; |
c2c6d25f JM |
4106 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4107 | puts_filtered (buf); | |
4108 | puts_filtered ("\n"); | |
c2d11a7d | 4109 | return -1; |
c2c6d25f | 4110 | } |
c906108c | 4111 | default: |
c2d11a7d | 4112 | if (bc < sizeof_buf - 1) |
c906108c | 4113 | { |
c2d11a7d | 4114 | buf[bc++] = c; |
c906108c SS |
4115 | csum += c; |
4116 | continue; | |
4117 | } | |
4118 | ||
c2d11a7d | 4119 | buf[bc] = '\0'; |
c906108c SS |
4120 | puts_filtered ("Remote packet too long: "); |
4121 | puts_filtered (buf); | |
4122 | puts_filtered ("\n"); | |
4123 | ||
c2d11a7d | 4124 | return -1; |
c906108c SS |
4125 | } |
4126 | } | |
4127 | } | |
4128 | ||
4129 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4130 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4131 | this is used (in synchronous mode) to wait for a target that is is | |
4132 | executing user code to stop. */ | |
d9fcf2fb JM |
4133 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4134 | don't have to change all the calls to getpkt to deal with the | |
4135 | return value, because at the moment I don't know what the right | |
4136 | thing to do it for those. */ | |
c906108c | 4137 | void |
c2d11a7d JM |
4138 | getpkt (char *buf, |
4139 | long sizeof_buf, | |
4140 | int forever) | |
d9fcf2fb JM |
4141 | { |
4142 | int timed_out; | |
4143 | ||
4144 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4145 | } | |
4146 | ||
4147 | ||
4148 | /* Read a packet from the remote machine, with error checking, and | |
4149 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4150 | this is used (in synchronous mode) to wait for a target that is is | |
4151 | executing user code to stop. If FOREVER == 0, this function is | |
4152 | allowed to time out gracefully and return an indication of this to | |
4153 | the caller. */ | |
3172dc30 | 4154 | static int |
d9fcf2fb JM |
4155 | getpkt_sane (char *buf, |
4156 | long sizeof_buf, | |
4157 | int forever) | |
c906108c SS |
4158 | { |
4159 | int c; | |
4160 | int tries; | |
4161 | int timeout; | |
4162 | int val; | |
4163 | ||
c5aa993b | 4164 | strcpy (buf, "timeout"); |
c906108c SS |
4165 | |
4166 | if (forever) | |
4167 | { | |
c906108c | 4168 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4169 | } |
4170 | ||
4171 | else | |
4172 | timeout = remote_timeout; | |
4173 | ||
4174 | #define MAX_TRIES 3 | |
4175 | ||
4176 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4177 | { | |
4178 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4179 | continuously, but if it pauses, we'll get a zero from readchar |
4180 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4181 | |
4182 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4183 | After that, we expect characters to arrive at a brisk pace. They |
4184 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4185 | |
4186 | do | |
4187 | { | |
4188 | c = readchar (timeout); | |
4189 | ||
4190 | if (c == SERIAL_TIMEOUT) | |
4191 | { | |
2acceee2 | 4192 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4193 | { |
2acceee2 | 4194 | QUIT; |
c906108c SS |
4195 | target_mourn_inferior (); |
4196 | error ("Watchdog has expired. Target detached.\n"); | |
4197 | } | |
c906108c | 4198 | if (remote_debug) |
0f71a2f6 | 4199 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4200 | goto retry; |
4201 | } | |
4202 | } | |
4203 | while (c != '$'); | |
4204 | ||
4205 | /* We've found the start of a packet, now collect the data. */ | |
4206 | ||
c2d11a7d | 4207 | val = read_frame (buf, sizeof_buf); |
c906108c | 4208 | |
c2d11a7d | 4209 | if (val >= 0) |
c906108c SS |
4210 | { |
4211 | if (remote_debug) | |
43e526b9 JM |
4212 | { |
4213 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4214 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4215 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4216 | } | |
2cd58942 | 4217 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4218 | return 0; |
c906108c SS |
4219 | } |
4220 | ||
4221 | /* Try the whole thing again. */ | |
4222 | retry: | |
2cd58942 | 4223 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4224 | } |
4225 | ||
4226 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4227 | ||
4228 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4229 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4230 | return 1; |
c906108c SS |
4231 | } |
4232 | \f | |
4233 | static void | |
fba45db2 | 4234 | remote_kill (void) |
c906108c SS |
4235 | { |
4236 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4237 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4238 | if (kill_kludge) | |
4239 | { | |
4240 | kill_kludge = 0; | |
4241 | target_mourn_inferior (); | |
4242 | return; | |
4243 | } | |
4244 | ||
4245 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4246 | speaking terms with the remote system. */ | |
c5aa993b | 4247 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4248 | |
4249 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4250 | we do or not. For the existing stubs, kill is a noop. */ | |
4251 | target_mourn_inferior (); | |
4252 | } | |
4253 | ||
43ff13b4 JM |
4254 | /* Async version of remote_kill. */ |
4255 | static void | |
fba45db2 | 4256 | remote_async_kill (void) |
43ff13b4 JM |
4257 | { |
4258 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4259 | if (target_is_async_p ()) |
2cd58942 | 4260 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4261 | |
4262 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4263 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4264 | if (kill_kludge) | |
4265 | { | |
4266 | kill_kludge = 0; | |
4267 | target_mourn_inferior (); | |
4268 | return; | |
4269 | } | |
4270 | ||
4271 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4272 | speaking terms with the remote system. */ | |
c5aa993b | 4273 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4274 | |
4275 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4276 | we do or not. For the existing stubs, kill is a noop. */ | |
4277 | target_mourn_inferior (); | |
4278 | } | |
4279 | ||
c906108c | 4280 | static void |
fba45db2 | 4281 | remote_mourn (void) |
c906108c SS |
4282 | { |
4283 | remote_mourn_1 (&remote_ops); | |
4284 | } | |
4285 | ||
53a5351d | 4286 | static void |
fba45db2 | 4287 | remote_async_mourn (void) |
53a5351d JM |
4288 | { |
4289 | remote_mourn_1 (&remote_async_ops); | |
4290 | } | |
4291 | ||
c906108c | 4292 | static void |
fba45db2 | 4293 | extended_remote_mourn (void) |
c906108c SS |
4294 | { |
4295 | /* We do _not_ want to mourn the target like this; this will | |
4296 | remove the extended remote target from the target stack, | |
802188a7 | 4297 | and the next time the user says "run" it'll fail. |
c906108c SS |
4298 | |
4299 | FIXME: What is the right thing to do here? */ | |
4300 | #if 0 | |
4301 | remote_mourn_1 (&extended_remote_ops); | |
4302 | #endif | |
4303 | } | |
4304 | ||
4305 | /* Worker function for remote_mourn. */ | |
4306 | static void | |
fba45db2 | 4307 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4308 | { |
4309 | unpush_target (target); | |
4310 | generic_mourn_inferior (); | |
4311 | } | |
4312 | ||
4313 | /* In the extended protocol we want to be able to do things like | |
4314 | "run" and have them basically work as expected. So we need | |
802188a7 | 4315 | a special create_inferior function. |
c906108c SS |
4316 | |
4317 | FIXME: One day add support for changing the exec file | |
4318 | we're debugging, arguments and an environment. */ | |
4319 | ||
4320 | static void | |
c27cda74 AC |
4321 | extended_remote_create_inferior (char *exec_file, char *args, char **env, |
4322 | int from_tty) | |
c906108c SS |
4323 | { |
4324 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4325 | the remote server. */ | |
4326 | remove_breakpoints (); | |
4327 | ||
4328 | /* Now restart the remote server. */ | |
4329 | extended_remote_restart (); | |
4330 | ||
4331 | /* Now put the breakpoints back in. This way we're safe if the | |
4332 | restart function works via a unix fork on the remote side. */ | |
4333 | insert_breakpoints (); | |
4334 | ||
4335 | /* Clean up from the last time we were running. */ | |
4336 | clear_proceed_status (); | |
4337 | ||
4338 | /* Let the remote process run. */ | |
4339 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4340 | } | |
4341 | ||
43ff13b4 JM |
4342 | /* Async version of extended_remote_create_inferior. */ |
4343 | static void | |
c27cda74 AC |
4344 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env, |
4345 | int from_tty) | |
43ff13b4 JM |
4346 | { |
4347 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4348 | the remote server. */ | |
4349 | remove_breakpoints (); | |
4350 | ||
4351 | /* If running asynchronously, register the target file descriptor | |
4352 | with the event loop. */ | |
362646f5 | 4353 | if (target_can_async_p ()) |
2acceee2 | 4354 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4355 | |
4356 | /* Now restart the remote server. */ | |
4357 | extended_remote_restart (); | |
4358 | ||
4359 | /* Now put the breakpoints back in. This way we're safe if the | |
4360 | restart function works via a unix fork on the remote side. */ | |
4361 | insert_breakpoints (); | |
4362 | ||
4363 | /* Clean up from the last time we were running. */ | |
4364 | clear_proceed_status (); | |
4365 | ||
4366 | /* Let the remote process run. */ | |
4367 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4368 | } | |
c906108c | 4369 | \f |
c5aa993b | 4370 | |
aaab4dba | 4371 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4372 | instruction than other targets; in those use |
4373 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4374 | Also, bi-endian targets may define | |
4375 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4376 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4377 | just call the standard routines that are in mem-break.c. */ | |
4378 | ||
4379 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4380 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4381 | the ARCH-OS-tdep.c code can override the default. */ | |
4382 | ||
4383 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4384 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4385 | #endif |
4386 | ||
7fec2c59 | 4387 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4388 | |
4389 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4390 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4391 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4392 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4393 | #endif |
4394 | ||
7fec2c59 AC |
4395 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4396 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4397 | |
7fec2c59 | 4398 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4399 | |
aaab4dba AC |
4400 | /* Insert a breakpoint on targets that don't have any better |
4401 | breakpoint support. We read the contents of the target location | |
4402 | and stash it, then overwrite it with a breakpoint instruction. | |
4403 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4404 | is a pointer to memory allocated for saving the target contents. | |
4405 | It is guaranteed by the caller to be long enough to save the number | |
4406 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4407 | |
4408 | static int | |
fba45db2 | 4409 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4410 | { |
d01949b6 | 4411 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4412 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4413 | int val; |
802188a7 | 4414 | #endif |
96baa820 JM |
4415 | int bp_size; |
4416 | ||
d471ea57 AC |
4417 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4418 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4419 | fails, and the user has explicitly requested the Z support then | |
4420 | report an error, otherwise, mark it disabled and go on. */ | |
802188a7 | 4421 | |
d471ea57 | 4422 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4423 | { |
d01949b6 | 4424 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4425 | char *p = buf; |
802188a7 | 4426 | |
0caabb7e | 4427 | addr = remote_address_masked (addr); |
96baa820 JM |
4428 | *(p++) = 'Z'; |
4429 | *(p++) = '0'; | |
4430 | *(p++) = ','; | |
0caabb7e AC |
4431 | p += hexnumstr (p, (ULONGEST) addr); |
4432 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4433 | sprintf (p, ",%d", bp_size); |
802188a7 | 4434 | |
96baa820 | 4435 | putpkt (buf); |
d01949b6 | 4436 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4437 | |
d471ea57 | 4438 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4439 | { |
d471ea57 AC |
4440 | case PACKET_ERROR: |
4441 | return -1; | |
4442 | case PACKET_OK: | |
4443 | return 0; | |
4444 | case PACKET_UNKNOWN: | |
4445 | break; | |
96baa820 JM |
4446 | } |
4447 | } | |
c906108c | 4448 | |
802188a7 | 4449 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4450 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4451 | ||
4452 | if (val == 0) | |
4453 | { | |
d7449b42 | 4454 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4455 | val = target_write_memory (addr, (char *) big_break_insn, |
4456 | sizeof big_break_insn); | |
4457 | else | |
4458 | val = target_write_memory (addr, (char *) little_break_insn, | |
4459 | sizeof little_break_insn); | |
4460 | } | |
4461 | ||
4462 | return val; | |
4463 | #else | |
4464 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4465 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4466 | } |
4467 | ||
4468 | static int | |
fba45db2 | 4469 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4470 | { |
d01949b6 | 4471 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4472 | int bp_size; |
4473 | ||
d471ea57 | 4474 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4475 | { |
d01949b6 | 4476 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4477 | char *p = buf; |
802188a7 | 4478 | |
96baa820 JM |
4479 | *(p++) = 'z'; |
4480 | *(p++) = '0'; | |
4481 | *(p++) = ','; | |
4482 | ||
0caabb7e AC |
4483 | addr = remote_address_masked (addr); |
4484 | p += hexnumstr (p, (ULONGEST) addr); | |
4485 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4486 | sprintf (p, ",%d", bp_size); |
802188a7 | 4487 | |
96baa820 | 4488 | putpkt (buf); |
d01949b6 | 4489 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4490 | |
4491 | return (buf[0] == 'E'); | |
4492 | } | |
4493 | ||
7fec2c59 | 4494 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4495 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4496 | #else | |
4497 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4498 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4499 | } |
4500 | ||
d471ea57 AC |
4501 | static int |
4502 | watchpoint_to_Z_packet (int type) | |
4503 | { | |
4504 | switch (type) | |
4505 | { | |
4506 | case hw_write: | |
4507 | return 2; | |
4508 | break; | |
4509 | case hw_read: | |
4510 | return 3; | |
4511 | break; | |
4512 | case hw_access: | |
4513 | return 4; | |
4514 | break; | |
4515 | default: | |
8e65ff28 AC |
4516 | internal_error (__FILE__, __LINE__, |
4517 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4518 | } |
4519 | } | |
4520 | ||
3c3bea1c | 4521 | static int |
fba45db2 | 4522 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4523 | { |
d01949b6 AC |
4524 | struct remote_state *rs = get_remote_state (); |
4525 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4526 | char *p; |
d471ea57 | 4527 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4528 | |
d471ea57 AC |
4529 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4530 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4531 | remote_protocol_Z[packet].name, | |
4532 | remote_protocol_Z[packet].title); | |
802188a7 | 4533 | |
d471ea57 | 4534 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4535 | p = strchr (buf, '\0'); |
4536 | addr = remote_address_masked (addr); | |
4537 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4538 | sprintf (p, ",%x", len); |
802188a7 | 4539 | |
96baa820 | 4540 | putpkt (buf); |
d01949b6 | 4541 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4542 | |
d471ea57 AC |
4543 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4544 | { | |
4545 | case PACKET_ERROR: | |
4546 | case PACKET_UNKNOWN: | |
4547 | return -1; | |
4548 | case PACKET_OK: | |
4549 | return 0; | |
4550 | } | |
8e65ff28 AC |
4551 | internal_error (__FILE__, __LINE__, |
4552 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4553 | } |
4554 | ||
d471ea57 | 4555 | |
3c3bea1c | 4556 | static int |
fba45db2 | 4557 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4558 | { |
d01949b6 AC |
4559 | struct remote_state *rs = get_remote_state (); |
4560 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4561 | char *p; |
d471ea57 AC |
4562 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4563 | ||
4564 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4565 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4566 | remote_protocol_Z[packet].name, | |
4567 | remote_protocol_Z[packet].title); | |
802188a7 | 4568 | |
d471ea57 | 4569 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4570 | p = strchr (buf, '\0'); |
4571 | addr = remote_address_masked (addr); | |
4572 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4573 | sprintf (p, ",%x", len); |
96baa820 | 4574 | putpkt (buf); |
d01949b6 | 4575 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4576 | |
d471ea57 AC |
4577 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4578 | { | |
4579 | case PACKET_ERROR: | |
4580 | case PACKET_UNKNOWN: | |
4581 | return -1; | |
4582 | case PACKET_OK: | |
4583 | return 0; | |
4584 | } | |
8e65ff28 AC |
4585 | internal_error (__FILE__, __LINE__, |
4586 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4587 | } |
4588 | ||
3c3bea1c | 4589 | |
501eef12 AC |
4590 | int remote_hw_watchpoint_limit = -1; |
4591 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4592 | |
b9362cc7 | 4593 | static int |
3c3bea1c | 4594 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4595 | { |
3c3bea1c GS |
4596 | if (type == bp_hardware_breakpoint) |
4597 | { | |
4598 | if (remote_hw_breakpoint_limit == 0) | |
4599 | return 0; | |
501eef12 AC |
4600 | else if (remote_hw_breakpoint_limit < 0) |
4601 | return 1; | |
3c3bea1c GS |
4602 | else if (cnt <= remote_hw_breakpoint_limit) |
4603 | return 1; | |
4604 | } | |
4605 | else | |
4606 | { | |
4607 | if (remote_hw_watchpoint_limit == 0) | |
4608 | return 0; | |
501eef12 AC |
4609 | else if (remote_hw_watchpoint_limit < 0) |
4610 | return 1; | |
3c3bea1c GS |
4611 | else if (ot) |
4612 | return -1; | |
4613 | else if (cnt <= remote_hw_watchpoint_limit) | |
4614 | return 1; | |
4615 | } | |
4616 | return -1; | |
4617 | } | |
4618 | ||
b9362cc7 | 4619 | static int |
3c3bea1c GS |
4620 | remote_stopped_by_watchpoint (void) |
4621 | { | |
4622 | return remote_stopped_by_watchpoint_p; | |
4623 | } | |
4624 | ||
7270d8f2 OF |
4625 | extern int stepped_after_stopped_by_watchpoint; |
4626 | ||
4aa7a7f5 JJ |
4627 | static int |
4628 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4629 | { |
4aa7a7f5 | 4630 | int rc = 0; |
7270d8f2 OF |
4631 | if (remote_stopped_by_watchpoint () |
4632 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4633 | { |
4634 | *addr_p = remote_watch_data_address; | |
4635 | rc = 1; | |
4636 | } | |
4637 | ||
4638 | return rc; | |
3c3bea1c GS |
4639 | } |
4640 | ||
4641 | ||
4642 | static int | |
4643 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4644 | { | |
4645 | int len = 0; | |
d01949b6 AC |
4646 | struct remote_state *rs = get_remote_state (); |
4647 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4648 | char *p = buf; |
802188a7 | 4649 | |
c8189ed1 GS |
4650 | /* The length field should be set to the size of a breakpoint |
4651 | instruction. */ | |
4652 | ||
802188a7 | 4653 | BREAKPOINT_FROM_PC (&addr, &len); |
3c3bea1c | 4654 | |
d471ea57 AC |
4655 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4656 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4657 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4658 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4659 | |
96baa820 JM |
4660 | *(p++) = 'Z'; |
4661 | *(p++) = '1'; | |
4662 | *(p++) = ','; | |
802188a7 | 4663 | |
96baa820 JM |
4664 | addr = remote_address_masked (addr); |
4665 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4666 | sprintf (p, ",%x", len); |
96baa820 JM |
4667 | |
4668 | putpkt (buf); | |
d01949b6 | 4669 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4670 | |
d471ea57 AC |
4671 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4672 | { | |
4673 | case PACKET_ERROR: | |
4674 | case PACKET_UNKNOWN: | |
4675 | return -1; | |
4676 | case PACKET_OK: | |
4677 | return 0; | |
4678 | } | |
8e65ff28 | 4679 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4680 | "remote_insert_hw_breakpoint: reached end of function"); |
96baa820 JM |
4681 | } |
4682 | ||
d471ea57 | 4683 | |
802188a7 | 4684 | static int |
3c3bea1c | 4685 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) |
96baa820 | 4686 | { |
3c3bea1c | 4687 | int len; |
d01949b6 AC |
4688 | struct remote_state *rs = get_remote_state (); |
4689 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4690 | char *p = buf; |
c8189ed1 GS |
4691 | |
4692 | /* The length field should be set to the size of a breakpoint | |
4693 | instruction. */ | |
4694 | ||
4695 | BREAKPOINT_FROM_PC (&addr, &len); | |
4696 | ||
d471ea57 AC |
4697 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4698 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4699 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4700 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4701 | |
96baa820 JM |
4702 | *(p++) = 'z'; |
4703 | *(p++) = '1'; | |
4704 | *(p++) = ','; | |
802188a7 | 4705 | |
96baa820 JM |
4706 | addr = remote_address_masked (addr); |
4707 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4708 | sprintf (p, ",%x", len); |
96baa820 JM |
4709 | |
4710 | putpkt(buf); | |
d01949b6 | 4711 | getpkt (buf, (rs->remote_packet_size), 0); |
802188a7 | 4712 | |
d471ea57 AC |
4713 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4714 | { | |
4715 | case PACKET_ERROR: | |
4716 | case PACKET_UNKNOWN: | |
4717 | return -1; | |
4718 | case PACKET_OK: | |
4719 | return 0; | |
4720 | } | |
8e65ff28 | 4721 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4722 | "remote_remove_hw_breakpoint: reached end of function"); |
96baa820 | 4723 | } |
96baa820 | 4724 | |
c906108c SS |
4725 | /* Some targets are only capable of doing downloads, and afterwards |
4726 | they switch to the remote serial protocol. This function provides | |
4727 | a clean way to get from the download target to the remote target. | |
4728 | It's basically just a wrapper so that we don't have to expose any | |
4729 | of the internal workings of remote.c. | |
4730 | ||
4731 | Prior to calling this routine, you should shutdown the current | |
4732 | target code, else you will get the "A program is being debugged | |
4733 | already..." message. Usually a call to pop_target() suffices. */ | |
4734 | ||
4735 | void | |
fba45db2 | 4736 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4737 | { |
4738 | printf_filtered ("Switching to remote protocol\n"); | |
4739 | remote_open (name, from_tty); | |
4740 | } | |
4741 | ||
c906108c SS |
4742 | /* Table used by the crc32 function to calcuate the checksum. */ |
4743 | ||
c5aa993b JM |
4744 | static unsigned long crc32_table[256] = |
4745 | {0, 0}; | |
c906108c SS |
4746 | |
4747 | static unsigned long | |
fba45db2 | 4748 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4749 | { |
c5aa993b | 4750 | if (!crc32_table[1]) |
c906108c SS |
4751 | { |
4752 | /* Initialize the CRC table and the decoding table. */ | |
4753 | int i, j; | |
4754 | unsigned int c; | |
4755 | ||
4756 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4757 | { |
4758 | for (c = i << 24, j = 8; j > 0; --j) | |
4759 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4760 | crc32_table[i] = c; | |
4761 | } | |
c906108c SS |
4762 | } |
4763 | ||
4764 | while (len--) | |
4765 | { | |
4766 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4767 | buf++; | |
4768 | } | |
4769 | return crc; | |
4770 | } | |
4771 | ||
4772 | /* compare-sections command | |
4773 | ||
4774 | With no arguments, compares each loadable section in the exec bfd | |
4775 | with the same memory range on the target, and reports mismatches. | |
4776 | Useful for verifying the image on the target against the exec file. | |
4777 | Depends on the target understanding the new "qCRC:" request. */ | |
4778 | ||
e514a9d6 JM |
4779 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4780 | target method (target verify memory) and generic version of the | |
4781 | actual command. This will allow other high-level code (especially | |
4782 | generic_load()) to make use of this target functionality. */ | |
4783 | ||
c906108c | 4784 | static void |
fba45db2 | 4785 | compare_sections_command (char *args, int from_tty) |
c906108c | 4786 | { |
d01949b6 | 4787 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4788 | asection *s; |
4789 | unsigned long host_crc, target_crc; | |
4790 | extern bfd *exec_bfd; | |
4791 | struct cleanup *old_chain; | |
085dd6e6 JM |
4792 | char *tmp; |
4793 | char *sectdata; | |
ce359b09 | 4794 | const char *sectname; |
d01949b6 | 4795 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4796 | bfd_size_type size; |
4797 | bfd_vma lma; | |
4798 | int matched = 0; | |
4799 | int mismatched = 0; | |
4800 | ||
4801 | if (!exec_bfd) | |
4802 | error ("command cannot be used without an exec file"); | |
4803 | if (!current_target.to_shortname || | |
4804 | strcmp (current_target.to_shortname, "remote") != 0) | |
4805 | error ("command can only be used with remote target"); | |
4806 | ||
c5aa993b | 4807 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4808 | { |
4809 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4810 | continue; /* skip non-loadable section */ |
c906108c | 4811 | |
2c500098 | 4812 | size = bfd_get_section_size (s); |
c906108c | 4813 | if (size == 0) |
c5aa993b | 4814 | continue; /* skip zero-length section */ |
c906108c | 4815 | |
ce359b09 | 4816 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4817 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4818 | continue; /* not the section selected by user */ |
c906108c | 4819 | |
c5aa993b | 4820 | matched = 1; /* do this section */ |
c906108c SS |
4821 | lma = s->lma; |
4822 | /* FIXME: assumes lma can fit into long */ | |
4823 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4824 | putpkt (buf); | |
4825 | ||
4826 | /* be clever; compute the host_crc before waiting for target reply */ | |
4827 | sectdata = xmalloc (size); | |
b8c9b27d | 4828 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4829 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4830 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4831 | ||
d01949b6 | 4832 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 4833 | if (buf[0] == 'E') |
823ca731 AC |
4834 | error ("target memory fault, section %s, range 0x%s -- 0x%s", |
4835 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4836 | if (buf[0] != 'C') |
4837 | error ("remote target does not support this operation"); | |
4838 | ||
4839 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4840 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4841 | ||
d4f3574e SS |
4842 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4843 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4844 | if (host_crc == target_crc) |
4845 | printf_filtered ("matched.\n"); | |
4846 | else | |
c5aa993b JM |
4847 | { |
4848 | printf_filtered ("MIS-MATCHED!\n"); | |
4849 | mismatched++; | |
4850 | } | |
c906108c SS |
4851 | |
4852 | do_cleanups (old_chain); | |
4853 | } | |
4854 | if (mismatched > 0) | |
4855 | warning ("One or more sections of the remote executable does not match\n\ | |
4856 | the loaded file\n"); | |
4857 | if (args && !matched) | |
4858 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4859 | } | |
4860 | ||
1e3ff5ad | 4861 | static LONGEST |
4b8a223f | 4862 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
8aa91c1e | 4863 | const char *annex, void *readbuf, const void *writebuf, |
1e3ff5ad | 4864 | ULONGEST offset, LONGEST len) |
c906108c | 4865 | { |
d01949b6 | 4866 | struct remote_state *rs = get_remote_state (); |
c906108c | 4867 | int i; |
d01949b6 | 4868 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 4869 | char *p2 = &buf2[0]; |
1e3ff5ad | 4870 | char query_type; |
c906108c | 4871 | |
21e3b9b9 DJ |
4872 | /* Handle memory using remote_xfer_memory. */ |
4873 | if (object == TARGET_OBJECT_MEMORY) | |
4874 | { | |
4875 | int xfered; | |
4876 | errno = 0; | |
4877 | ||
4878 | if (writebuf != NULL) | |
4879 | { | |
4880 | void *buffer = xmalloc (len); | |
4881 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4882 | memcpy (buffer, writebuf, len); | |
4883 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4884 | do_cleanups (cleanup); | |
4885 | } | |
4886 | else | |
4887 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4888 | ||
4889 | if (xfered > 0) | |
4890 | return xfered; | |
4891 | else if (xfered == 0 && errno == 0) | |
4892 | return 0; | |
4893 | else | |
4894 | return -1; | |
4895 | } | |
4896 | ||
4b8a223f AC |
4897 | /* Only handle reads. */ |
4898 | if (writebuf != NULL || readbuf == NULL) | |
4899 | return -1; | |
4900 | ||
1e3ff5ad AC |
4901 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4902 | objects!!! Instead specify new query packets. */ | |
4903 | switch (object) | |
c906108c | 4904 | { |
1e3ff5ad AC |
4905 | case TARGET_OBJECT_KOD: |
4906 | query_type = 'K'; | |
4907 | break; | |
4908 | case TARGET_OBJECT_AVR: | |
4909 | query_type = 'R'; | |
4910 | break; | |
802188a7 RM |
4911 | |
4912 | case TARGET_OBJECT_AUXV: | |
4913 | if (remote_protocol_qPart_auxv.support != PACKET_DISABLE) | |
4914 | { | |
4915 | unsigned int total = 0; | |
4916 | while (len > 0) | |
4917 | { | |
4918 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
4919 | snprintf (buf2, rs->remote_packet_size, | |
4920 | "qPart:auxv:read::%s,%s", | |
4921 | phex_nz (offset, sizeof offset), | |
4922 | phex_nz (n, sizeof n)); | |
4923 | i = putpkt (buf2); | |
4924 | if (i < 0) | |
4925 | return total > 0 ? total : i; | |
4926 | buf2[0] = '\0'; | |
4927 | getpkt (buf2, rs->remote_packet_size, 0); | |
4928 | if (packet_ok (buf2, &remote_protocol_qPart_auxv) != PACKET_OK) | |
4929 | return total > 0 ? total : -1; | |
4930 | if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0') | |
4931 | break; /* Got EOF indicator. */ | |
4932 | /* Got some data. */ | |
4933 | i = hex2bin (buf2, readbuf, len); | |
4934 | if (i > 0) | |
4935 | { | |
4936 | readbuf = (void *) ((char *) readbuf + i); | |
4937 | offset += i; | |
4938 | len -= i; | |
4939 | total += i; | |
4940 | } | |
4941 | } | |
4942 | return total; | |
4943 | } | |
4944 | return -1; | |
4945 | ||
1e3ff5ad | 4946 | default: |
c906108c SS |
4947 | return -1; |
4948 | } | |
4949 | ||
4b8a223f | 4950 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 4951 | buffer size. */ |
4b8a223f | 4952 | if (offset == 0 && len == 0) |
1e3ff5ad AC |
4953 | return (rs->remote_packet_size); |
4954 | /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is | |
4955 | not large enough let the caller. */ | |
4956 | if (len < (rs->remote_packet_size)) | |
4957 | return -1; | |
4958 | len = rs->remote_packet_size; | |
4959 | ||
c906108c | 4960 | /* except for querying the minimum buffer size, target must be open */ |
c5aa993b | 4961 | if (!remote_desc) |
c906108c SS |
4962 | error ("remote query is only available after target open"); |
4963 | ||
1e3ff5ad | 4964 | gdb_assert (annex != NULL); |
4b8a223f | 4965 | gdb_assert (readbuf != NULL); |
c906108c SS |
4966 | |
4967 | *p2++ = 'q'; | |
4968 | *p2++ = query_type; | |
4969 | ||
4970 | /* we used one buffer char for the remote protocol q command and another | |
4971 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4972 | plus one extra in case we are debugging (remote_debug), | |
4973 | we have PBUFZIZ - 7 left to pack the query string */ | |
4974 | i = 0; | |
1e3ff5ad | 4975 | while (annex[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c | 4976 | { |
1e3ff5ad AC |
4977 | /* Bad caller may have sent forbidden characters. */ |
4978 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
4979 | *p2++ = annex[i]; | |
c906108c SS |
4980 | i++; |
4981 | } | |
1e3ff5ad AC |
4982 | *p2 = '\0'; |
4983 | gdb_assert (annex[i] == '\0'); | |
c906108c SS |
4984 | |
4985 | i = putpkt (buf2); | |
c5aa993b JM |
4986 | if (i < 0) |
4987 | return i; | |
c906108c | 4988 | |
4b8a223f | 4989 | getpkt (readbuf, len, 0); |
c906108c | 4990 | |
4b8a223f | 4991 | return strlen (readbuf); |
c906108c SS |
4992 | } |
4993 | ||
96baa820 JM |
4994 | static void |
4995 | remote_rcmd (char *command, | |
d9fcf2fb | 4996 | struct ui_file *outbuf) |
96baa820 | 4997 | { |
d01949b6 | 4998 | struct remote_state *rs = get_remote_state (); |
96baa820 | 4999 | int i; |
d01949b6 | 5000 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5001 | char *p = buf; |
5002 | ||
5003 | if (!remote_desc) | |
5004 | error ("remote rcmd is only available after target open"); | |
5005 | ||
7be570e7 JM |
5006 | /* Send a NULL command across as an empty command */ |
5007 | if (command == NULL) | |
5008 | command = ""; | |
5009 | ||
96baa820 JM |
5010 | /* The query prefix */ |
5011 | strcpy (buf, "qRcmd,"); | |
5012 | p = strchr (buf, '\0'); | |
5013 | ||
d01949b6 | 5014 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5015 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5016 | ||
5017 | /* Encode the actual command */ | |
30559e10 | 5018 | bin2hex (command, p, 0); |
96baa820 JM |
5019 | |
5020 | if (putpkt (buf) < 0) | |
5021 | error ("Communication problem with target\n"); | |
5022 | ||
5023 | /* get/display the response */ | |
5024 | while (1) | |
5025 | { | |
5026 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
5027 | buf[0] = '\0'; | |
d01949b6 | 5028 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5029 | if (buf[0] == '\0') |
5030 | error ("Target does not support this command\n"); | |
5031 | if (buf[0] == 'O' && buf[1] != 'K') | |
5032 | { | |
5033 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
5034 | continue; | |
5035 | } | |
5036 | if (strcmp (buf, "OK") == 0) | |
5037 | break; | |
7be570e7 JM |
5038 | if (strlen (buf) == 3 && buf[0] == 'E' |
5039 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5040 | { | |
5041 | error ("Protocol error with Rcmd"); | |
5042 | } | |
96baa820 JM |
5043 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5044 | { | |
5045 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5046 | fputc_unfiltered (c, outbuf); | |
5047 | } | |
5048 | break; | |
5049 | } | |
5050 | } | |
5051 | ||
c906108c | 5052 | static void |
fba45db2 | 5053 | packet_command (char *args, int from_tty) |
c906108c | 5054 | { |
d01949b6 AC |
5055 | struct remote_state *rs = get_remote_state (); |
5056 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5057 | |
c5aa993b | 5058 | if (!remote_desc) |
c906108c SS |
5059 | error ("command can only be used with remote target"); |
5060 | ||
c5aa993b | 5061 | if (!args) |
c906108c SS |
5062 | error ("remote-packet command requires packet text as argument"); |
5063 | ||
5064 | puts_filtered ("sending: "); | |
5065 | print_packet (args); | |
5066 | puts_filtered ("\n"); | |
5067 | putpkt (args); | |
5068 | ||
d01949b6 | 5069 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5070 | puts_filtered ("received: "); |
5071 | print_packet (buf); | |
5072 | puts_filtered ("\n"); | |
5073 | } | |
5074 | ||
5075 | #if 0 | |
5076 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
5077 | ||
a14ed312 | 5078 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5079 | |
a14ed312 | 5080 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5081 | |
a14ed312 | 5082 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5083 | |
a14ed312 | 5084 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5085 | |
a14ed312 | 5086 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 5087 | |
a14ed312 | 5088 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5089 | |
a14ed312 | 5090 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5091 | |
a14ed312 | 5092 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5093 | |
a14ed312 | 5094 | static void init_remote_threadtests (void); |
c906108c | 5095 | |
c5aa993b | 5096 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5097 | |
5098 | static void | |
fba45db2 | 5099 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5100 | { |
5101 | int sample_thread = SAMPLE_THREAD; | |
5102 | ||
5103 | printf_filtered ("Remote threadset test\n"); | |
5104 | set_thread (sample_thread, 1); | |
5105 | } | |
5106 | ||
5107 | ||
5108 | static void | |
fba45db2 | 5109 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5110 | { |
5111 | int sample_thread = SAMPLE_THREAD; | |
5112 | ||
39f77062 | 5113 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5114 | printf_filtered ("PASS: Thread alive test\n"); |
5115 | else | |
5116 | printf_filtered ("FAIL: Thread alive test\n"); | |
5117 | } | |
5118 | ||
a14ed312 | 5119 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5120 | |
5121 | void | |
fba45db2 | 5122 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5123 | { |
5124 | char hexid[20]; | |
5125 | ||
5126 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5127 | hexid[16] = 0; | |
5128 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5129 | } | |
5130 | ||
5131 | static void | |
fba45db2 | 5132 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5133 | { |
5134 | int startflag = 1; | |
5135 | threadref nextthread; | |
5136 | int done, result_count; | |
5137 | threadref threadlist[3]; | |
5138 | ||
5139 | printf_filtered ("Remote Threadlist test\n"); | |
5140 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5141 | &result_count, &threadlist[0])) | |
5142 | printf_filtered ("FAIL: threadlist test\n"); | |
5143 | else | |
5144 | { | |
5145 | threadref *scan = threadlist; | |
5146 | threadref *limit = scan + result_count; | |
5147 | ||
5148 | while (scan < limit) | |
5149 | output_threadid (" thread ", scan++); | |
5150 | } | |
5151 | } | |
5152 | ||
5153 | void | |
fba45db2 | 5154 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5155 | { |
5156 | output_threadid ("Threadid: ", &info->threadid); | |
5157 | printf_filtered ("Name: %s\n ", info->shortname); | |
5158 | printf_filtered ("State: %s\n", info->display); | |
5159 | printf_filtered ("other: %s\n\n", info->more_display); | |
5160 | } | |
5161 | ||
5162 | int | |
fba45db2 | 5163 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5164 | { |
5165 | int result; | |
5166 | int set; | |
5167 | struct gdb_ext_thread_info threadinfo; | |
5168 | ||
5169 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5170 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5171 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5172 | display_thread_info (&threadinfo); | |
5173 | return result; | |
5174 | } | |
5175 | ||
5176 | static void | |
fba45db2 | 5177 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5178 | { |
5179 | int athread = SAMPLE_THREAD; | |
5180 | threadref thread; | |
5181 | int set; | |
5182 | ||
5183 | int_to_threadref (&thread, athread); | |
5184 | printf_filtered ("Remote Threadinfo test\n"); | |
5185 | if (!get_and_display_threadinfo (&thread)) | |
5186 | printf_filtered ("FAIL cannot get thread info\n"); | |
5187 | } | |
5188 | ||
5189 | static int | |
fba45db2 | 5190 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5191 | { |
5192 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5193 | return get_and_display_threadinfo (ref); | |
5194 | } | |
5195 | ||
5196 | static void | |
fba45db2 | 5197 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5198 | { |
5199 | printf_filtered ("Remote Threadlist update test\n"); | |
5200 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5201 | } | |
5202 | ||
5203 | static void | |
5204 | init_remote_threadtests (void) | |
5205 | { | |
5206 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5207 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5208 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5209 | "Fetch and display info about one thread"); | |
5210 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5211 | "Test setting to a different thread"); | |
5212 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5213 | "Iterate through updating all remote thread info"); | |
5214 | add_com ("talive", class_obscure, threadalive_test, | |
5215 | " Remote thread alive test "); | |
5216 | } | |
5217 | ||
5218 | #endif /* 0 */ | |
5219 | ||
f3fb8c85 MS |
5220 | /* Convert a thread ID to a string. Returns the string in a static |
5221 | buffer. */ | |
5222 | ||
5223 | static char * | |
39f77062 | 5224 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5225 | { |
5226 | static char buf[30]; | |
5227 | ||
39f77062 | 5228 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5229 | return buf; |
5230 | } | |
5231 | ||
c906108c | 5232 | static void |
fba45db2 | 5233 | init_remote_ops (void) |
c906108c | 5234 | { |
c5aa993b | 5235 | remote_ops.to_shortname = "remote"; |
c906108c | 5236 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5237 | remote_ops.to_doc = |
c906108c | 5238 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5239 | Specify the serial device it is connected to\n\ |
5240 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5241 | remote_ops.to_open = remote_open; |
5242 | remote_ops.to_close = remote_close; | |
c906108c | 5243 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5244 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5245 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5246 | remote_ops.to_wait = remote_wait; |
5247 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5248 | remote_ops.to_store_registers = remote_store_registers; | |
5249 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5250 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5251 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5252 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5253 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5254 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5255 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5256 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5257 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5258 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5259 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5260 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5261 | remote_ops.to_kill = remote_kill; |
5262 | remote_ops.to_load = generic_load; | |
c906108c SS |
5263 | remote_ops.to_mourn_inferior = remote_mourn; |
5264 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5265 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5266 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5267 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5268 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5269 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5270 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5271 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5272 | remote_ops.to_has_all_memory = 1; |
5273 | remote_ops.to_has_memory = 1; | |
5274 | remote_ops.to_has_stack = 1; | |
5275 | remote_ops.to_has_registers = 1; | |
5276 | remote_ops.to_has_execution = 1; | |
5277 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5278 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5279 | } |
5280 | ||
5281 | /* Set up the extended remote vector by making a copy of the standard | |
5282 | remote vector and adding to it. */ | |
5283 | ||
5284 | static void | |
fba45db2 | 5285 | init_extended_remote_ops (void) |
c906108c SS |
5286 | { |
5287 | extended_remote_ops = remote_ops; | |
5288 | ||
0f71a2f6 | 5289 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5290 | extended_remote_ops.to_longname = |
c906108c | 5291 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5292 | extended_remote_ops.to_doc = |
c906108c SS |
5293 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5294 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5295 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5296 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5297 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5298 | } |
5299 | ||
6426a772 JM |
5300 | static int |
5301 | remote_can_async_p (void) | |
5302 | { | |
5303 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5304 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5305 | } |
5306 | ||
5307 | static int | |
5308 | remote_is_async_p (void) | |
5309 | { | |
5310 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5311 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5312 | } |
5313 | ||
2acceee2 JM |
5314 | /* Pass the SERIAL event on and up to the client. One day this code |
5315 | will be able to delay notifying the client of an event until the | |
5316 | point where an entire packet has been received. */ | |
5317 | ||
5318 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5319 | static void *async_client_context; | |
5320 | static serial_event_ftype remote_async_serial_handler; | |
5321 | ||
6426a772 | 5322 | static void |
819cc324 | 5323 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5324 | { |
2acceee2 JM |
5325 | /* Don't propogate error information up to the client. Instead let |
5326 | the client find out about the error by querying the target. */ | |
5327 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5328 | } | |
5329 | ||
5330 | static void | |
5331 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5332 | { | |
ed9a39eb | 5333 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5334 | internal_error (__FILE__, __LINE__, |
5335 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5336 | |
2acceee2 JM |
5337 | if (callback != NULL) |
5338 | { | |
2cd58942 | 5339 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5340 | async_client_callback = callback; |
5341 | async_client_context = context; | |
5342 | } | |
5343 | else | |
2cd58942 | 5344 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5345 | } |
5346 | ||
43ff13b4 JM |
5347 | /* Target async and target extended-async. |
5348 | ||
5349 | This are temporary targets, until it is all tested. Eventually | |
5350 | async support will be incorporated int the usual 'remote' | |
5351 | target. */ | |
5352 | ||
5353 | static void | |
c2d11a7d | 5354 | init_remote_async_ops (void) |
43ff13b4 JM |
5355 | { |
5356 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5357 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5358 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5359 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5360 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5361 | remote_async_ops.to_open = remote_async_open; |
5362 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5363 | remote_async_ops.to_detach = remote_detach; |
5364 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5365 | remote_async_ops.to_resume = remote_async_resume; |
5366 | remote_async_ops.to_wait = remote_async_wait; | |
5367 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5368 | remote_async_ops.to_store_registers = remote_store_registers; | |
5369 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5370 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5371 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5372 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5373 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5374 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5375 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5376 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5377 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5378 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5379 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5380 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5381 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5382 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5383 | remote_async_ops.to_kill = remote_async_kill; |
5384 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5385 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5386 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5387 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5388 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5389 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5390 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5391 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5392 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5393 | remote_async_ops.to_stratum = process_stratum; |
5394 | remote_async_ops.to_has_all_memory = 1; | |
5395 | remote_async_ops.to_has_memory = 1; | |
5396 | remote_async_ops.to_has_stack = 1; | |
5397 | remote_async_ops.to_has_registers = 1; | |
5398 | remote_async_ops.to_has_execution = 1; | |
5399 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5400 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5401 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5402 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5403 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5404 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5405 | } |
5406 | ||
5407 | /* Set up the async extended remote vector by making a copy of the standard | |
5408 | remote vector and adding to it. */ | |
5409 | ||
5410 | static void | |
c2d11a7d | 5411 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5412 | { |
5413 | extended_async_remote_ops = remote_async_ops; | |
5414 | ||
5415 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5416 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5417 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5418 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5419 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5420 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5421 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5422 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5423 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5424 | } | |
5425 | ||
5a2468f5 | 5426 | static void |
c2d11a7d | 5427 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5428 | { |
5a2468f5 JM |
5429 | } |
5430 | ||
d471ea57 AC |
5431 | static void |
5432 | show_remote_cmd (char *args, int from_tty) | |
5433 | { | |
e9e68a56 AC |
5434 | /* FIXME: cagney/2002-06-15: This function should iterate over |
5435 | remote_show_cmdlist for a list of sub commands to show. */ | |
5436 | show_remote_protocol_Z_packet_cmd (args, from_tty, NULL); | |
e9e68a56 | 5437 | show_remote_protocol_P_packet_cmd (args, from_tty, NULL); |
b96ec7ac | 5438 | show_remote_protocol_p_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 5439 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL); |
506fb367 | 5440 | show_remote_protocol_vcont_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 5441 | show_remote_protocol_binary_download_cmd (args, from_tty, NULL); |
802188a7 | 5442 | show_remote_protocol_qPart_auxv_packet_cmd (args, from_tty, NULL); |
d471ea57 | 5443 | } |
5a2468f5 | 5444 | |
0f71a2f6 | 5445 | static void |
fba45db2 | 5446 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5447 | { |
d696208f | 5448 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5449 | } |
5450 | ||
dc8acb97 MS |
5451 | /* Saved pointer to previous owner of the new_objfile event. */ |
5452 | static void (*remote_new_objfile_chain) (struct objfile *); | |
5453 | ||
5454 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
5455 | static void | |
5456 | remote_new_objfile (struct objfile *objfile) | |
5457 | { | |
5458 | if (remote_desc != 0) /* Have a remote connection */ | |
5459 | { | |
5460 | remote_check_symbols (objfile); | |
5461 | } | |
5462 | /* Call predecessor on chain, if any. */ | |
5463 | if (remote_new_objfile_chain != 0 && | |
5464 | remote_desc == 0) | |
5465 | remote_new_objfile_chain (objfile); | |
5466 | } | |
5467 | ||
c906108c | 5468 | void |
fba45db2 | 5469 | _initialize_remote (void) |
c906108c | 5470 | { |
5a2468f5 JM |
5471 | static struct cmd_list_element *remote_set_cmdlist; |
5472 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5473 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5474 | |
0f71a2f6 | 5475 | /* architecture specific data */ |
030f20e1 | 5476 | remote_gdbarch_data_handle = gdbarch_data_register_post_init (init_remote_state); |
d01949b6 AC |
5477 | |
5478 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5479 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5480 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5481 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5482 | |
c906108c SS |
5483 | init_remote_ops (); |
5484 | add_target (&remote_ops); | |
5485 | ||
5486 | init_extended_remote_ops (); | |
5487 | add_target (&extended_remote_ops); | |
cce74817 | 5488 | |
43ff13b4 JM |
5489 | init_remote_async_ops (); |
5490 | add_target (&remote_async_ops); | |
5491 | ||
5492 | init_extended_async_remote_ops (); | |
5493 | add_target (&extended_async_remote_ops); | |
5494 | ||
dc8acb97 | 5495 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5496 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5497 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5498 | |
c906108c SS |
5499 | #if 0 |
5500 | init_remote_threadtests (); | |
5501 | #endif | |
5502 | ||
d471ea57 AC |
5503 | /* set/show remote ... */ |
5504 | ||
5a2468f5 JM |
5505 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5506 | Remote protocol specific variables\n\ | |
5507 | Configure various remote-protocol specific variables such as\n\ | |
5508 | the packets being used", | |
cff3e48b | 5509 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5510 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5511 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5512 | Remote protocol specific variables\n\ |
5513 | Configure various remote-protocol specific variables such as\n\ | |
5514 | the packets being used", | |
cff3e48b | 5515 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5516 | 0/*allow-unknown*/, &showlist); |
5517 | ||
c5aa993b | 5518 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5519 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5520 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5521 | &cmdlist); |
5522 | ||
5523 | add_cmd ("packet", class_maintenance, packet_command, | |
5524 | "Send an arbitrary packet to a remote target.\n\ | |
5525 | maintenance packet TEXT\n\ | |
5526 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5527 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5528 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5529 | terminating `#' character and checksum.", | |
5530 | &maintenancelist); | |
5531 | ||
3b64bf98 AC |
5532 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, "\ |
5533 | Set whether to send break if interrupted.", "\ | |
5534 | Show whether to send break if interrupted.", "\ | |
5535 | If set, a break, instead of a cntrl-c, is sent to the remote target.", "\ | |
5536 | Whether to send break if interrupted is %s.", | |
e707bbc2 AC |
5537 | NULL, NULL, |
5538 | &setlist, &showlist); | |
c906108c | 5539 | |
11cf8741 JM |
5540 | /* Install commands for configuring memory read/write packets. */ |
5541 | ||
5542 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5543 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5544 | &setlist); | |
4ad5b0f7 | 5545 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5546 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5547 | &showlist); | |
5548 | add_cmd ("memory-write-packet-size", no_class, | |
5549 | set_memory_write_packet_size, | |
5550 | "Set the maximum number of bytes per memory-write packet.\n" | |
5551 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5552 | "default packet size. The actual limit is further reduced\n" | |
5553 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5554 | "further restriction and ``limit'' to enable that restriction\n", | |
5555 | &remote_set_cmdlist); | |
5556 | add_cmd ("memory-read-packet-size", no_class, | |
5557 | set_memory_read_packet_size, | |
5558 | "Set the maximum number of bytes per memory-read packet.\n" | |
5559 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5560 | "default packet size. The actual limit is further reduced\n" | |
5561 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5562 | "further restriction and ``limit'' to enable that restriction\n", | |
5563 | &remote_set_cmdlist); | |
5564 | add_cmd ("memory-write-packet-size", no_class, | |
5565 | show_memory_write_packet_size, | |
5566 | "Show the maximum number of bytes per memory-write packet.\n", | |
5567 | &remote_show_cmdlist); | |
5568 | add_cmd ("memory-read-packet-size", no_class, | |
5569 | show_memory_read_packet_size, | |
5570 | "Show the maximum number of bytes per memory-read packet.\n", | |
5571 | &remote_show_cmdlist); | |
c906108c | 5572 | |
b3f42336 AC |
5573 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
5574 | &remote_hw_watchpoint_limit, "\ | |
3b64bf98 AC |
5575 | Set the maximum number of target hardware watchpoints.", "\ |
5576 | Show the maximum number of target hardware watchpoints.", "\ | |
501eef12 | 5577 | Specify a negative limit for unlimited.", "\ |
3b64bf98 | 5578 | The maximum number of target hardware watchpoints is %s.", |
b3f42336 AC |
5579 | NULL, NULL, |
5580 | &remote_set_cmdlist, &remote_show_cmdlist); | |
5581 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
5582 | &remote_hw_breakpoint_limit, "\ | |
3b64bf98 AC |
5583 | Set the maximum number of target hardware breakpoints.", "\ |
5584 | Show the maximum number of target hardware breakpoints.", "\ | |
501eef12 | 5585 | Specify a negative limit for unlimited.", "\ |
3b64bf98 | 5586 | The maximum number of target hardware breakpoints is %s.", |
b3f42336 AC |
5587 | NULL, NULL, |
5588 | &remote_set_cmdlist, &remote_show_cmdlist); | |
501eef12 | 5589 | |
cb1a6d5f | 5590 | deprecated_add_show_from_set |
c906108c | 5591 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5592 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5593 | "Set the maximum size of the address (in bits) \ |
5594 | in a memory packet.\n", | |
5595 | &setlist), | |
c5aa993b | 5596 | &showlist); |
c906108c | 5597 | |
96baa820 JM |
5598 | add_packet_config_cmd (&remote_protocol_binary_download, |
5599 | "X", "binary-download", | |
5600 | set_remote_protocol_binary_download_cmd, | |
5601 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5602 | &remote_set_cmdlist, &remote_show_cmdlist, |
5603 | 1); | |
96baa820 JM |
5604 | #if 0 |
5605 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5606 | compatibility. */ | |
cb1a6d5f | 5607 | deprecated_add_show_from_set |
b83266a0 SS |
5608 | (add_set_cmd ("remotebinarydownload", no_class, |
5609 | var_boolean, (char *) &remote_binary_download, | |
5610 | "Set binary downloads.\n", &setlist), | |
5611 | &showlist); | |
96baa820 | 5612 | #endif |
0f71a2f6 | 5613 | |
506fb367 DJ |
5614 | add_packet_config_cmd (&remote_protocol_vcont, |
5615 | "vCont", "verbose-resume", | |
5616 | set_remote_protocol_vcont_packet_cmd, | |
5617 | show_remote_protocol_vcont_packet_cmd, | |
5618 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5619 | 0); | |
5620 | ||
dc8acb97 MS |
5621 | add_packet_config_cmd (&remote_protocol_qSymbol, |
5622 | "qSymbol", "symbol-lookup", | |
5623 | set_remote_protocol_qSymbol_packet_cmd, | |
5624 | show_remote_protocol_qSymbol_packet_cmd, | |
5625 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5626 | 0); | |
5627 | ||
d471ea57 AC |
5628 | add_packet_config_cmd (&remote_protocol_P, |
5629 | "P", "set-register", | |
5a2468f5 JM |
5630 | set_remote_protocol_P_packet_cmd, |
5631 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5632 | &remote_set_cmdlist, &remote_show_cmdlist, |
5633 | 1); | |
5634 | ||
b96ec7ac AC |
5635 | add_packet_config_cmd (&remote_protocol_p, |
5636 | "p", "fetch-register", | |
5637 | set_remote_protocol_p_packet_cmd, | |
5638 | show_remote_protocol_p_packet_cmd, | |
5639 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5640 | 1); | |
5641 | ||
d471ea57 AC |
5642 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], |
5643 | "Z0", "software-breakpoint", | |
5644 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5645 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5646 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5647 | 0); | |
5648 | ||
5649 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5650 | "Z1", "hardware-breakpoint", | |
5651 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5652 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5653 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5654 | 0); | |
5655 | ||
5656 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5657 | "Z2", "write-watchpoint", | |
5658 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5659 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5660 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5661 | 0); | |
5662 | ||
5663 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5664 | "Z3", "read-watchpoint", | |
5665 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5666 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5667 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5668 | 0); | |
5669 | ||
5670 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5671 | "Z4", "access-watchpoint", | |
5672 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5673 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5674 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5675 | 0); | |
5676 | ||
802188a7 RM |
5677 | add_packet_config_cmd (&remote_protocol_qPart_auxv, |
5678 | "qPart_auxv", "read-aux-vector", | |
5679 | set_remote_protocol_qPart_auxv_packet_cmd, | |
5680 | show_remote_protocol_qPart_auxv_packet_cmd, | |
5681 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5682 | 0); | |
5683 | ||
d471ea57 | 5684 | /* Keep the old ``set remote Z-packet ...'' working. */ |
e9e68a56 AC |
5685 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
5686 | &remote_Z_packet_detect, "\ | |
3b64bf98 AC |
5687 | Set use of remote protocol `Z' packets", "\ |
5688 | Show use of remote protocol `Z' packets ", "\ | |
5689 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ | |
5690 | packets.", "\ | |
5691 | Use of remote protocol `Z' packets is %s", | |
e9e68a56 AC |
5692 | set_remote_protocol_Z_packet_cmd, |
5693 | show_remote_protocol_Z_packet_cmd, | |
5694 | &remote_set_cmdlist, &remote_show_cmdlist); | |
449092f6 CV |
5695 | |
5696 | /* Eventually initialize fileio. See fileio.c */ | |
5697 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5698 | } |