Commit | Line | Data |
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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 SS |
46 | #ifdef USG |
47 | #include <sys/types.h> | |
48 | #endif | |
49 | ||
43ff13b4 | 50 | #include "event-loop.h" |
c2c6d25f | 51 | #include "event-top.h" |
2acceee2 | 52 | #include "inf-loop.h" |
43ff13b4 | 53 | |
c906108c SS |
54 | #include <signal.h> |
55 | #include "serial.h" | |
56 | ||
6240bebf MS |
57 | #include "gdbcore.h" /* for exec_bfd */ |
58 | ||
449092f6 CV |
59 | #include "remote-fileio.h" |
60 | ||
c906108c | 61 | /* Prototypes for local functions */ |
6426a772 JM |
62 | static void cleanup_sigint_signal_handler (void *dummy); |
63 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 64 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 65 | |
a14ed312 KB |
66 | static void handle_remote_sigint (int); |
67 | static void handle_remote_sigint_twice (int); | |
68 | static void async_remote_interrupt (gdb_client_data); | |
69 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 70 | |
a14ed312 | 71 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 72 | |
a14ed312 | 73 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 74 | |
a14ed312 KB |
75 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
76 | int len, int should_write, | |
29e57380 | 77 | struct mem_attrib *attrib, |
a14ed312 | 78 | struct target_ops *target); |
c906108c | 79 | |
a14ed312 | 80 | static void remote_prepare_to_store (void); |
c906108c | 81 | |
a14ed312 | 82 | static void remote_fetch_registers (int regno); |
c906108c | 83 | |
39f77062 KB |
84 | static void remote_resume (ptid_t ptid, int step, |
85 | enum target_signal siggnal); | |
86 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 87 | enum target_signal siggnal); |
36918e70 | 88 | static int remote_start_remote (struct ui_out *uiout, void *dummy); |
c906108c | 89 | |
a14ed312 KB |
90 | static void remote_open (char *name, int from_tty); |
91 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 92 | |
a14ed312 KB |
93 | static void extended_remote_open (char *name, int from_tty); |
94 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 95 | |
92d1e331 DJ |
96 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
97 | int async_p); | |
c906108c | 98 | |
a14ed312 | 99 | static void remote_close (int quitting); |
c906108c | 100 | |
a14ed312 | 101 | static void remote_store_registers (int regno); |
c906108c | 102 | |
a14ed312 KB |
103 | static void remote_mourn (void); |
104 | static void remote_async_mourn (void); | |
c906108c | 105 | |
a14ed312 | 106 | static void extended_remote_restart (void); |
c906108c | 107 | |
a14ed312 | 108 | static void extended_remote_mourn (void); |
c906108c | 109 | |
a14ed312 | 110 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 111 | |
c2d11a7d | 112 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 113 | |
a14ed312 | 114 | static int readchar (int timeout); |
c906108c | 115 | |
39f77062 KB |
116 | static ptid_t remote_wait (ptid_t ptid, |
117 | struct target_waitstatus *status); | |
118 | static ptid_t remote_async_wait (ptid_t ptid, | |
119 | struct target_waitstatus *status); | |
c906108c | 120 | |
a14ed312 KB |
121 | static void remote_kill (void); |
122 | static void remote_async_kill (void); | |
c906108c | 123 | |
a14ed312 | 124 | static int tohex (int nib); |
c906108c | 125 | |
a14ed312 | 126 | static void remote_detach (char *args, int from_tty); |
c906108c | 127 | |
a14ed312 | 128 | static void remote_interrupt (int signo); |
c906108c | 129 | |
a14ed312 | 130 | static void remote_interrupt_twice (int signo); |
7a292a7a | 131 | |
a14ed312 | 132 | static void interrupt_query (void); |
c906108c | 133 | |
a14ed312 | 134 | static void set_thread (int, int); |
c906108c | 135 | |
39f77062 | 136 | static int remote_thread_alive (ptid_t); |
c906108c | 137 | |
a14ed312 | 138 | static void get_offsets (void); |
c906108c | 139 | |
c2d11a7d | 140 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 141 | |
a14ed312 | 142 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 143 | |
a14ed312 | 144 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 145 | |
a14ed312 | 146 | static int hexnumlen (ULONGEST num); |
c906108c | 147 | |
a14ed312 | 148 | static void init_remote_ops (void); |
c906108c | 149 | |
a14ed312 | 150 | static void init_extended_remote_ops (void); |
c906108c | 151 | |
a14ed312 | 152 | static void remote_stop (void); |
c906108c | 153 | |
a14ed312 | 154 | static int ishex (int ch, int *val); |
c906108c | 155 | |
a14ed312 | 156 | static int stubhex (int ch); |
c906108c | 157 | |
a14ed312 | 158 | static int hexnumstr (char *, ULONGEST); |
c906108c | 159 | |
a14ed312 | 160 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 161 | |
a14ed312 | 162 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 163 | |
a14ed312 | 164 | static void print_packet (char *); |
c906108c | 165 | |
a14ed312 | 166 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 167 | |
a14ed312 | 168 | static void compare_sections_command (char *, int); |
c906108c | 169 | |
a14ed312 | 170 | static void packet_command (char *, int); |
c906108c | 171 | |
a14ed312 | 172 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 173 | |
39f77062 | 174 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 175 | |
a14ed312 | 176 | static void remote_find_new_threads (void); |
c906108c | 177 | |
a14ed312 | 178 | static void record_currthread (int currthread); |
c906108c | 179 | |
30559e10 | 180 | static int fromhex (int a); |
c906108c | 181 | |
dc8acb97 | 182 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 183 | |
dc8acb97 | 184 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 185 | |
a14ed312 | 186 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 187 | |
a14ed312 | 188 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 189 | |
5a2468f5 | 190 | struct packet_config; |
5a2468f5 | 191 | |
a14ed312 | 192 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 193 | |
d471ea57 | 194 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 195 | |
a14ed312 | 196 | void _initialize_remote (void); |
c906108c | 197 | |
694f61fb | 198 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
199 | target is open()ed, remote.c should create a per-target description |
200 | of the remote protocol using that target's architecture. | |
ce2826aa | 201 | Unfortunately, the target stack doesn't include local state. For |
d01949b6 AC |
202 | the moment keep the information in the target's architecture |
203 | object. Sigh.. */ | |
204 | ||
ad10f812 AC |
205 | struct packet_reg |
206 | { | |
207 | long offset; /* Offset into G packet. */ | |
208 | long regnum; /* GDB's internal register number. */ | |
209 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 210 | int in_g_packet; /* Always part of G packet. */ |
12c266ea | 211 | /* long size in bytes; == DEPRECATED_REGISTER_RAW_SIZE (regnum); at present. */ |
ad10f812 AC |
212 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
213 | }; | |
214 | ||
d01949b6 AC |
215 | struct remote_state |
216 | { | |
ad10f812 AC |
217 | /* Description of the remote protocol registers. */ |
218 | long sizeof_g_packet; | |
b323314b AC |
219 | |
220 | /* Description of the remote protocol registers indexed by REGNUM | |
221 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
222 | struct packet_reg *regs; | |
ad10f812 | 223 | |
d01949b6 AC |
224 | /* This is the size (in chars) of the first response to the ``g'' |
225 | packet. It is used as a heuristic when determining the maximum | |
226 | size of memory-read and memory-write packets. A target will | |
227 | typically only reserve a buffer large enough to hold the ``g'' | |
228 | packet. The size does not include packet overhead (headers and | |
229 | trailers). */ | |
230 | long actual_register_packet_size; | |
231 | ||
232 | /* This is the maximum size (in chars) of a non read/write packet. | |
233 | It is also used as a cap on the size of read/write packets. */ | |
234 | long remote_packet_size; | |
235 | }; | |
236 | ||
3c3bea1c | 237 | |
d01949b6 AC |
238 | /* Handle for retreving the remote protocol data from gdbarch. */ |
239 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
240 | ||
241 | static struct remote_state * | |
5ae5f592 | 242 | get_remote_state (void) |
d01949b6 | 243 | { |
451fbdda | 244 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
245 | } |
246 | ||
247 | static void * | |
248 | init_remote_state (struct gdbarch *gdbarch) | |
249 | { | |
250 | int regnum; | |
e5e78edc | 251 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state); |
d01949b6 | 252 | |
7d58c67d TR |
253 | if (DEPRECATED_REGISTER_BYTES != 0) |
254 | rs->sizeof_g_packet = DEPRECATED_REGISTER_BYTES; | |
255 | else | |
256 | rs->sizeof_g_packet = 0; | |
ad10f812 | 257 | |
b323314b | 258 | /* Assume a 1:1 regnum<->pnum table. */ |
e5e78edc AC |
259 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
260 | struct packet_reg); | |
b323314b | 261 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 262 | { |
b323314b AC |
263 | struct packet_reg *r = &rs->regs[regnum]; |
264 | r->pnum = regnum; | |
265 | r->regnum = regnum; | |
62700349 | 266 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 267 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 268 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d TR |
269 | |
270 | /* Compute packet size by accumulating the size of all registers. */ | |
271 | if (DEPRECATED_REGISTER_BYTES == 0) | |
272 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); | |
ad10f812 AC |
273 | } |
274 | ||
d01949b6 AC |
275 | /* Default maximum number of characters in a packet body. Many |
276 | remote stubs have a hardwired buffer size of 400 bytes | |
277 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
278 | as the maximum packet-size to ensure that the packet and an extra | |
279 | NUL character can always fit in the buffer. This stops GDB | |
280 | trashing stubs that try to squeeze an extra NUL into what is | |
281 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
282 | rs->remote_packet_size = 400 - 1; | |
283 | ||
ad10f812 AC |
284 | /* Should rs->sizeof_g_packet needs more space than the |
285 | default, adjust the size accordingly. Remember that each byte is | |
286 | encoded as two characters. 32 is the overhead for the packet | |
287 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 AC |
288 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
289 | little. */ | |
ad10f812 AC |
290 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
291 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
802188a7 | 292 | |
d01949b6 AC |
293 | /* This one is filled in when a ``g'' packet is received. */ |
294 | rs->actual_register_packet_size = 0; | |
295 | ||
296 | return rs; | |
297 | } | |
298 | ||
ad10f812 AC |
299 | static struct packet_reg * |
300 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
301 | { | |
b323314b AC |
302 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
303 | return NULL; | |
304 | else | |
ad10f812 | 305 | { |
b323314b AC |
306 | struct packet_reg *r = &rs->regs[regnum]; |
307 | gdb_assert (r->regnum == regnum); | |
308 | return r; | |
ad10f812 | 309 | } |
ad10f812 AC |
310 | } |
311 | ||
312 | static struct packet_reg * | |
313 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
314 | { | |
b323314b AC |
315 | int i; |
316 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 317 | { |
b323314b AC |
318 | struct packet_reg *r = &rs->regs[i]; |
319 | if (r->pnum == pnum) | |
320 | return r; | |
ad10f812 AC |
321 | } |
322 | return NULL; | |
d01949b6 AC |
323 | } |
324 | ||
3c3bea1c GS |
325 | /* FIXME: graces/2002-08-08: These variables should eventually be |
326 | bound to an instance of the target object (as in gdbarch-tdep()), | |
327 | when such a thing exists. */ | |
328 | ||
329 | /* This is set to the data address of the access causing the target | |
330 | to stop for a watchpoint. */ | |
331 | static CORE_ADDR remote_watch_data_address; | |
332 | ||
333 | /* This is non-zero if taregt stopped for a watchpoint. */ | |
334 | static int remote_stopped_by_watchpoint_p; | |
335 | ||
c906108c SS |
336 | |
337 | static struct target_ops remote_ops; | |
338 | ||
339 | static struct target_ops extended_remote_ops; | |
340 | ||
43ff13b4 JM |
341 | /* Temporary target ops. Just like the remote_ops and |
342 | extended_remote_ops, but with asynchronous support. */ | |
343 | static struct target_ops remote_async_ops; | |
344 | ||
345 | static struct target_ops extended_async_remote_ops; | |
346 | ||
6426a772 JM |
347 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
348 | ``forever'' still use the normal timeout mechanism. This is | |
349 | currently used by the ASYNC code to guarentee that target reads | |
350 | during the initial connect always time-out. Once getpkt has been | |
351 | modified to return a timeout indication and, in turn | |
352 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
353 | this can go away. */ | |
354 | static int wait_forever_enabled_p = 1; | |
355 | ||
356 | ||
c906108c SS |
357 | /* This variable chooses whether to send a ^C or a break when the user |
358 | requests program interruption. Although ^C is usually what remote | |
359 | systems expect, and that is the default here, sometimes a break is | |
360 | preferable instead. */ | |
361 | ||
362 | static int remote_break; | |
363 | ||
c906108c SS |
364 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
365 | remote_open knows that we don't have a file open when the program | |
366 | starts. */ | |
819cc324 | 367 | static struct serial *remote_desc = NULL; |
c906108c | 368 | |
c906108c SS |
369 | /* This variable sets the number of bits in an address that are to be |
370 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
371 | leading zeros, the entire address would be sent. This variable | |
372 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
373 | initial implementation of remote.c restricted the address sent in | |
374 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
375 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
376 | address was never sent. Since fixing this bug may cause a break in | |
377 | some remote targets this variable is principly provided to | |
378 | facilitate backward compatibility. */ | |
379 | ||
380 | static int remote_address_size; | |
381 | ||
6426a772 JM |
382 | /* Tempoary to track who currently owns the terminal. See |
383 | target_async_terminal_* for more details. */ | |
384 | ||
385 | static int remote_async_terminal_ours_p; | |
386 | ||
11cf8741 | 387 | \f |
11cf8741 | 388 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
389 | memory read/write packet. MIN ((rs->remote_packet_size), |
390 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
391 | values (fifo overruns, et.al.) and some users need larger values | |
392 | (speed up transfers). The variables ``preferred_*'' (the user | |
393 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
394 | (Positive - a soft limit, negative - a hard limit). */ | |
11cf8741 JM |
395 | |
396 | struct memory_packet_config | |
397 | { | |
398 | char *name; | |
399 | long size; | |
400 | int fixed_p; | |
401 | }; | |
402 | ||
403 | /* Compute the current size of a read/write packet. Since this makes | |
404 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
405 | ||
406 | static long | |
407 | get_memory_packet_size (struct memory_packet_config *config) | |
408 | { | |
d01949b6 | 409 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
410 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
411 | law?) that some hosts don't cope very well with large alloca() | |
412 | calls. Eventually the alloca() code will be replaced by calls to | |
413 | xmalloc() and make_cleanups() allowing this restriction to either | |
414 | be lifted or removed. */ | |
415 | #ifndef MAX_REMOTE_PACKET_SIZE | |
416 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
417 | #endif | |
418 | /* NOTE: 16 is just chosen at random. */ | |
419 | #ifndef MIN_REMOTE_PACKET_SIZE | |
420 | #define MIN_REMOTE_PACKET_SIZE 16 | |
421 | #endif | |
422 | long what_they_get; | |
423 | if (config->fixed_p) | |
424 | { | |
425 | if (config->size <= 0) | |
426 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
427 | else | |
428 | what_they_get = config->size; | |
429 | } | |
430 | else | |
431 | { | |
d01949b6 | 432 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
433 | /* Limit the packet to the size specified by the user. */ |
434 | if (config->size > 0 | |
435 | && what_they_get > config->size) | |
436 | what_they_get = config->size; | |
437 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
438 | if ((rs->actual_register_packet_size) > 0 |
439 | && what_they_get > (rs->actual_register_packet_size)) | |
440 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
441 | } |
442 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
443 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
444 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
445 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
446 | return what_they_get; | |
447 | } | |
448 | ||
449 | /* Update the size of a read/write packet. If they user wants | |
450 | something really big then do a sanity check. */ | |
451 | ||
452 | static void | |
453 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
454 | { | |
455 | int fixed_p = config->fixed_p; | |
456 | long size = config->size; | |
457 | if (args == NULL) | |
458 | error ("Argument required (integer, `fixed' or `limited')."); | |
459 | else if (strcmp (args, "hard") == 0 | |
460 | || strcmp (args, "fixed") == 0) | |
461 | fixed_p = 1; | |
462 | else if (strcmp (args, "soft") == 0 | |
463 | || strcmp (args, "limit") == 0) | |
464 | fixed_p = 0; | |
465 | else | |
466 | { | |
467 | char *end; | |
468 | size = strtoul (args, &end, 0); | |
469 | if (args == end) | |
470 | error ("Invalid %s (bad syntax).", config->name); | |
471 | #if 0 | |
472 | /* Instead of explicitly capping the size of a packet to | |
473 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
474 | instead allowed to set the size to something arbitrarily | |
475 | large. */ | |
476 | if (size > MAX_REMOTE_PACKET_SIZE) | |
477 | error ("Invalid %s (too large).", config->name); | |
478 | #endif | |
479 | } | |
480 | /* Extra checks? */ | |
481 | if (fixed_p && !config->fixed_p) | |
482 | { | |
483 | if (! query ("The target may not be able to correctly handle a %s\n" | |
484 | "of %ld bytes. Change the packet size? ", | |
485 | config->name, size)) | |
486 | error ("Packet size not changed."); | |
487 | } | |
488 | /* Update the config. */ | |
489 | config->fixed_p = fixed_p; | |
490 | config->size = size; | |
491 | } | |
492 | ||
493 | static void | |
494 | show_memory_packet_size (struct memory_packet_config *config) | |
495 | { | |
496 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
497 | if (config->fixed_p) | |
498 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
499 | get_memory_packet_size (config)); | |
500 | else | |
501 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
502 | get_memory_packet_size (config)); | |
503 | } | |
504 | ||
505 | static struct memory_packet_config memory_write_packet_config = | |
506 | { | |
507 | "memory-write-packet-size", | |
508 | }; | |
509 | ||
510 | static void | |
511 | set_memory_write_packet_size (char *args, int from_tty) | |
512 | { | |
513 | set_memory_packet_size (args, &memory_write_packet_config); | |
514 | } | |
515 | ||
516 | static void | |
517 | show_memory_write_packet_size (char *args, int from_tty) | |
518 | { | |
519 | show_memory_packet_size (&memory_write_packet_config); | |
520 | } | |
521 | ||
522 | static long | |
523 | get_memory_write_packet_size (void) | |
524 | { | |
525 | return get_memory_packet_size (&memory_write_packet_config); | |
526 | } | |
527 | ||
528 | static struct memory_packet_config memory_read_packet_config = | |
529 | { | |
530 | "memory-read-packet-size", | |
531 | }; | |
532 | ||
533 | static void | |
534 | set_memory_read_packet_size (char *args, int from_tty) | |
535 | { | |
536 | set_memory_packet_size (args, &memory_read_packet_config); | |
537 | } | |
538 | ||
539 | static void | |
540 | show_memory_read_packet_size (char *args, int from_tty) | |
541 | { | |
542 | show_memory_packet_size (&memory_read_packet_config); | |
543 | } | |
544 | ||
545 | static long | |
546 | get_memory_read_packet_size (void) | |
547 | { | |
d01949b6 | 548 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
549 | long size = get_memory_packet_size (&memory_read_packet_config); |
550 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
551 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
552 | increased beyond (rs->remote_packet_size). */ |
553 | if (size > (rs->remote_packet_size)) | |
554 | size = (rs->remote_packet_size); | |
11cf8741 JM |
555 | return size; |
556 | } | |
557 | ||
11cf8741 | 558 | \f |
5a2468f5 JM |
559 | /* Generic configuration support for packets the stub optionally |
560 | supports. Allows the user to specify the use of the packet as well | |
561 | as allowing GDB to auto-detect support in the remote stub. */ | |
562 | ||
563 | enum packet_support | |
564 | { | |
565 | PACKET_SUPPORT_UNKNOWN = 0, | |
566 | PACKET_ENABLE, | |
567 | PACKET_DISABLE | |
568 | }; | |
569 | ||
5a2468f5 JM |
570 | struct packet_config |
571 | { | |
5a2468f5 JM |
572 | char *name; |
573 | char *title; | |
7f19b9a2 | 574 | enum auto_boolean detect; |
5a2468f5 JM |
575 | enum packet_support support; |
576 | }; | |
577 | ||
d471ea57 AC |
578 | /* Analyze a packet's return value and update the packet config |
579 | accordingly. */ | |
580 | ||
581 | enum packet_result | |
582 | { | |
583 | PACKET_ERROR, | |
584 | PACKET_OK, | |
585 | PACKET_UNKNOWN | |
586 | }; | |
587 | ||
5a2468f5 | 588 | static void |
d471ea57 | 589 | update_packet_config (struct packet_config *config) |
5a2468f5 | 590 | { |
d471ea57 AC |
591 | switch (config->detect) |
592 | { | |
7f19b9a2 | 593 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
594 | config->support = PACKET_ENABLE; |
595 | break; | |
7f19b9a2 | 596 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
597 | config->support = PACKET_DISABLE; |
598 | break; | |
7f19b9a2 | 599 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
600 | config->support = PACKET_SUPPORT_UNKNOWN; |
601 | break; | |
602 | } | |
5a2468f5 JM |
603 | } |
604 | ||
605 | static void | |
fba45db2 | 606 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
607 | { |
608 | char *support = "internal-error"; | |
609 | switch (config->support) | |
610 | { | |
611 | case PACKET_ENABLE: | |
612 | support = "enabled"; | |
613 | break; | |
614 | case PACKET_DISABLE: | |
615 | support = "disabled"; | |
616 | break; | |
617 | case PACKET_SUPPORT_UNKNOWN: | |
618 | support = "unknown"; | |
619 | break; | |
620 | } | |
621 | switch (config->detect) | |
622 | { | |
7f19b9a2 | 623 | case AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
624 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
625 | config->name, config->title, support); | |
626 | break; | |
7f19b9a2 AC |
627 | case AUTO_BOOLEAN_TRUE: |
628 | case AUTO_BOOLEAN_FALSE: | |
8e248173 | 629 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", |
5a2468f5 | 630 | config->name, config->title, support); |
8e248173 | 631 | break; |
5a2468f5 JM |
632 | } |
633 | } | |
634 | ||
635 | static void | |
d471ea57 AC |
636 | add_packet_config_cmd (struct packet_config *config, |
637 | char *name, | |
638 | char *title, | |
e9e68a56 AC |
639 | cmd_sfunc_ftype *set_func, |
640 | cmd_sfunc_ftype *show_func, | |
d471ea57 AC |
641 | struct cmd_list_element **set_remote_list, |
642 | struct cmd_list_element **show_remote_list, | |
643 | int legacy) | |
644 | { | |
645 | struct cmd_list_element *set_cmd; | |
646 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
647 | char *set_doc; |
648 | char *show_doc; | |
3b64bf98 AC |
649 | char *help_doc; |
650 | char *print; | |
d471ea57 | 651 | char *cmd_name; |
5a2468f5 JM |
652 | config->name = name; |
653 | config->title = title; | |
7f19b9a2 | 654 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 655 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
656 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
657 | name, title); | |
658 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
659 | name, title); | |
3b64bf98 AC |
660 | print = xstrprintf ("Current use of remote protocol `%s' (%s) is %%s", |
661 | name, title); | |
d471ea57 | 662 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 663 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 AC |
664 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
665 | &config->detect, set_doc, show_doc, | |
3b64bf98 | 666 | "", print, |
e9e68a56 AC |
667 | set_func, show_func, |
668 | set_remote_list, show_remote_list); | |
d471ea57 AC |
669 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ |
670 | if (legacy) | |
671 | { | |
672 | char *legacy_name; | |
b435e160 | 673 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
674 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
675 | set_remote_list); | |
676 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
677 | show_remote_list); | |
678 | } | |
5a2468f5 JM |
679 | } |
680 | ||
d471ea57 AC |
681 | static enum packet_result |
682 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 683 | { |
d471ea57 | 684 | if (buf[0] != '\0') |
5a2468f5 | 685 | { |
d471ea57 AC |
686 | /* The stub recognized the packet request. Check that the |
687 | operation succeeded. */ | |
688 | switch (config->support) | |
689 | { | |
690 | case PACKET_SUPPORT_UNKNOWN: | |
691 | if (remote_debug) | |
692 | fprintf_unfiltered (gdb_stdlog, | |
693 | "Packet %s (%s) is supported\n", | |
694 | config->name, config->title); | |
695 | config->support = PACKET_ENABLE; | |
696 | break; | |
697 | case PACKET_DISABLE: | |
8e65ff28 AC |
698 | internal_error (__FILE__, __LINE__, |
699 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
700 | break; |
701 | case PACKET_ENABLE: | |
702 | break; | |
703 | } | |
704 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
705 | /* "OK" - definitly OK. */ | |
706 | return PACKET_OK; | |
707 | if (buf[0] == 'E' | |
708 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
709 | && buf[3] == '\0') | |
710 | /* "Enn" - definitly an error. */ | |
711 | return PACKET_ERROR; | |
712 | /* The packet may or may not be OK. Just assume it is */ | |
713 | return PACKET_OK; | |
714 | } | |
715 | else | |
716 | { | |
717 | /* The stub does not support the packet. */ | |
718 | switch (config->support) | |
719 | { | |
720 | case PACKET_ENABLE: | |
7f19b9a2 | 721 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 AC |
722 | /* If the stub previously indicated that the packet was |
723 | supported then there is a protocol error.. */ | |
724 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
725 | config->name, config->title); | |
726 | else | |
727 | /* The user set it wrong. */ | |
728 | error ("Enabled packet %s (%s) not recognized by stub", | |
729 | config->name, config->title); | |
730 | break; | |
731 | case PACKET_SUPPORT_UNKNOWN: | |
732 | if (remote_debug) | |
733 | fprintf_unfiltered (gdb_stdlog, | |
734 | "Packet %s (%s) is NOT supported\n", | |
735 | config->name, config->title); | |
736 | config->support = PACKET_DISABLE; | |
737 | break; | |
738 | case PACKET_DISABLE: | |
739 | break; | |
740 | } | |
741 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
742 | } |
743 | } | |
744 | ||
506fb367 DJ |
745 | /* Should we try the 'vCont' (descriptive resume) request? */ |
746 | static struct packet_config remote_protocol_vcont; | |
747 | ||
748 | static void | |
749 | set_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
750 | struct cmd_list_element *c) | |
751 | { | |
752 | update_packet_config (&remote_protocol_vcont); | |
753 | } | |
754 | ||
755 | static void | |
756 | show_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
757 | struct cmd_list_element *c) | |
758 | { | |
759 | show_packet_config_cmd (&remote_protocol_vcont); | |
760 | } | |
761 | ||
dc8acb97 MS |
762 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
763 | static struct packet_config remote_protocol_qSymbol; | |
764 | ||
765 | static void | |
766 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
767 | struct cmd_list_element *c) | |
768 | { | |
769 | update_packet_config (&remote_protocol_qSymbol); | |
770 | } | |
771 | ||
772 | static void | |
e9e68a56 AC |
773 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, |
774 | struct cmd_list_element *c) | |
dc8acb97 MS |
775 | { |
776 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
777 | } | |
778 | ||
5a2468f5 JM |
779 | /* Should we try the 'P' (set register) request? */ |
780 | ||
781 | static struct packet_config remote_protocol_P; | |
782 | ||
783 | static void | |
fba45db2 KB |
784 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
785 | struct cmd_list_element *c) | |
5a2468f5 | 786 | { |
d471ea57 | 787 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
788 | } |
789 | ||
790 | static void | |
e9e68a56 AC |
791 | show_remote_protocol_P_packet_cmd (char *args, int from_tty, |
792 | struct cmd_list_element *c) | |
5a2468f5 JM |
793 | { |
794 | show_packet_config_cmd (&remote_protocol_P); | |
795 | } | |
796 | ||
d471ea57 AC |
797 | /* Should we try one of the 'Z' requests? */ |
798 | ||
799 | enum Z_packet_type | |
800 | { | |
801 | Z_PACKET_SOFTWARE_BP, | |
802 | Z_PACKET_HARDWARE_BP, | |
803 | Z_PACKET_WRITE_WP, | |
804 | Z_PACKET_READ_WP, | |
805 | Z_PACKET_ACCESS_WP, | |
806 | NR_Z_PACKET_TYPES | |
807 | }; | |
96baa820 | 808 | |
d471ea57 AC |
809 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
810 | ||
811 | /* FIXME: Instead of having all these boiler plate functions, the | |
812 | command callback should include a context argument. */ | |
813 | ||
814 | static void | |
815 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
816 | struct cmd_list_element *c) | |
817 | { | |
818 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
819 | } | |
820 | ||
821 | static void | |
e9e68a56 AC |
822 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, |
823 | struct cmd_list_element *c) | |
d471ea57 AC |
824 | { |
825 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
826 | } | |
827 | ||
828 | static void | |
829 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
830 | struct cmd_list_element *c) | |
831 | { | |
832 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
833 | } | |
834 | ||
835 | static void | |
e9e68a56 AC |
836 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, |
837 | struct cmd_list_element *c) | |
d471ea57 AC |
838 | { |
839 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
840 | } | |
841 | ||
842 | static void | |
843 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
844 | struct cmd_list_element *c) | |
845 | { | |
846 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
847 | } | |
848 | ||
849 | static void | |
e9e68a56 AC |
850 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, |
851 | struct cmd_list_element *c) | |
d471ea57 AC |
852 | { |
853 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
854 | } | |
855 | ||
856 | static void | |
857 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
858 | struct cmd_list_element *c) | |
859 | { | |
860 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
861 | } | |
862 | ||
863 | static void | |
e9e68a56 AC |
864 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, |
865 | struct cmd_list_element *c) | |
d471ea57 AC |
866 | { |
867 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
868 | } | |
869 | ||
870 | static void | |
871 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
872 | struct cmd_list_element *c) | |
873 | { | |
874 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
875 | } | |
876 | ||
877 | static void | |
e9e68a56 AC |
878 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, |
879 | struct cmd_list_element *c) | |
d471ea57 AC |
880 | { |
881 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
882 | } | |
883 | ||
884 | /* For compatibility with older distributions. Provide a ``set remote | |
885 | Z-packet ...'' command that updates all the Z packet types. */ | |
886 | ||
7f19b9a2 | 887 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
888 | |
889 | static void | |
fba45db2 KB |
890 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
891 | struct cmd_list_element *c) | |
96baa820 | 892 | { |
d471ea57 AC |
893 | int i; |
894 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
895 | { | |
896 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
897 | update_packet_config (&remote_protocol_Z[i]); | |
898 | } | |
96baa820 JM |
899 | } |
900 | ||
901 | static void | |
e9e68a56 AC |
902 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
903 | struct cmd_list_element *c) | |
96baa820 | 904 | { |
d471ea57 AC |
905 | int i; |
906 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
907 | { | |
908 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
909 | } | |
96baa820 JM |
910 | } |
911 | ||
912 | /* Should we try the 'X' (remote binary download) packet? | |
913 | ||
914 | This variable (available to the user via "set remote X-packet") | |
915 | dictates whether downloads are sent in binary (via the 'X' packet). | |
916 | We assume that the stub can, and attempt to do it. This will be | |
917 | cleared if the stub does not understand it. This switch is still | |
918 | needed, though in cases when the packet is supported in the stub, | |
919 | but the connection does not allow it (i.e., 7-bit serial connection | |
920 | only). */ | |
921 | ||
922 | static struct packet_config remote_protocol_binary_download; | |
923 | ||
9d1f7ab2 MS |
924 | /* Should we try the 'ThreadInfo' query packet? |
925 | ||
926 | This variable (NOT available to the user: auto-detect only!) | |
927 | determines whether GDB will use the new, simpler "ThreadInfo" | |
928 | query or the older, more complex syntax for thread queries. | |
802188a7 | 929 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
930 | and set to false when the target fails to recognize it). */ |
931 | ||
932 | static int use_threadinfo_query; | |
933 | static int use_threadextra_query; | |
934 | ||
96baa820 JM |
935 | static void |
936 | set_remote_protocol_binary_download_cmd (char *args, | |
937 | int from_tty, | |
938 | struct cmd_list_element *c) | |
939 | { | |
d471ea57 | 940 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
941 | } |
942 | ||
943 | static void | |
e9e68a56 AC |
944 | show_remote_protocol_binary_download_cmd (char *args, int from_tty, |
945 | struct cmd_list_element *c) | |
96baa820 JM |
946 | { |
947 | show_packet_config_cmd (&remote_protocol_binary_download); | |
948 | } | |
949 | ||
802188a7 RM |
950 | /* Should we try the 'qPart:auxv' (target auxiliary vector read) request? */ |
951 | static struct packet_config remote_protocol_qPart_auxv; | |
952 | ||
953 | static void | |
954 | set_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
955 | struct cmd_list_element *c) | |
956 | { | |
957 | update_packet_config (&remote_protocol_qPart_auxv); | |
958 | } | |
959 | ||
960 | static void | |
961 | show_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
962 | struct cmd_list_element *c) | |
963 | { | |
964 | show_packet_config_cmd (&remote_protocol_qPart_auxv); | |
965 | } | |
966 | ||
c906108c | 967 | |
43ff13b4 | 968 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
ae44c0c4 AC |
969 | static void *sigint_remote_twice_token; |
970 | static void *sigint_remote_token; | |
43ff13b4 | 971 | |
c906108c SS |
972 | /* These are pointers to hook functions that may be set in order to |
973 | modify resume/wait behavior for a particular architecture. */ | |
974 | ||
9a4105ab AC |
975 | void (*deprecated_target_resume_hook) (void); |
976 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
977 | \f |
978 | ||
c5aa993b | 979 | |
c906108c SS |
980 | /* These are the threads which we last sent to the remote system. |
981 | -1 for all or -2 for not sent yet. */ | |
982 | static int general_thread; | |
cce74817 | 983 | static int continue_thread; |
c906108c SS |
984 | |
985 | /* Call this function as a result of | |
986 | 1) A halt indication (T packet) containing a thread id | |
987 | 2) A direct query of currthread | |
988 | 3) Successful execution of set thread | |
989 | */ | |
990 | ||
991 | static void | |
fba45db2 | 992 | record_currthread (int currthread) |
c906108c | 993 | { |
c906108c | 994 | general_thread = currthread; |
cce74817 | 995 | |
c906108c SS |
996 | /* If this is a new thread, add it to GDB's thread list. |
997 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 998 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 999 | { |
39f77062 | 1000 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1001 | ui_out_text (uiout, "[New "); |
39f77062 | 1002 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1003 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1004 | } |
c906108c SS |
1005 | } |
1006 | ||
1007 | #define MAGIC_NULL_PID 42000 | |
1008 | ||
1009 | static void | |
fba45db2 | 1010 | set_thread (int th, int gen) |
c906108c | 1011 | { |
d01949b6 AC |
1012 | struct remote_state *rs = get_remote_state (); |
1013 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1014 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1015 | |
1016 | if (state == th) | |
1017 | return; | |
1018 | ||
1019 | buf[0] = 'H'; | |
1020 | buf[1] = gen ? 'g' : 'c'; | |
1021 | if (th == MAGIC_NULL_PID) | |
1022 | { | |
1023 | buf[2] = '0'; | |
1024 | buf[3] = '\0'; | |
1025 | } | |
1026 | else if (th < 0) | |
1027 | sprintf (&buf[2], "-%x", -th); | |
1028 | else | |
1029 | sprintf (&buf[2], "%x", th); | |
1030 | putpkt (buf); | |
d01949b6 | 1031 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1032 | if (gen) |
c5aa993b | 1033 | general_thread = th; |
c906108c | 1034 | else |
cce74817 | 1035 | continue_thread = th; |
c906108c SS |
1036 | } |
1037 | \f | |
1038 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1039 | ||
1040 | static int | |
39f77062 | 1041 | remote_thread_alive (ptid_t ptid) |
c906108c | 1042 | { |
39f77062 | 1043 | int tid = PIDGET (ptid); |
cce74817 | 1044 | char buf[16]; |
c906108c | 1045 | |
cce74817 JM |
1046 | if (tid < 0) |
1047 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1048 | else |
cce74817 | 1049 | sprintf (buf, "T%08x", tid); |
c906108c | 1050 | putpkt (buf); |
c2d11a7d | 1051 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1052 | return (buf[0] == 'O' && buf[1] == 'K'); |
1053 | } | |
1054 | ||
1055 | /* About these extended threadlist and threadinfo packets. They are | |
1056 | variable length packets but, the fields within them are often fixed | |
1057 | length. They are redundent enough to send over UDP as is the | |
1058 | remote protocol in general. There is a matching unit test module | |
1059 | in libstub. */ | |
1060 | ||
cce74817 JM |
1061 | #define OPAQUETHREADBYTES 8 |
1062 | ||
1063 | /* a 64 bit opaque identifier */ | |
1064 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1065 | ||
1066 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1067 | protocol encoding, and remote.c. it is not particularly changable */ | |
1068 | ||
1069 | /* Right now, the internal structure is int. We want it to be bigger. | |
1070 | Plan to fix this. | |
c5aa993b | 1071 | */ |
cce74817 | 1072 | |
c5aa993b | 1073 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1074 | |
9d1f7ab2 | 1075 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1076 | equivalint to the reply of the remote threadinfo packet */ |
1077 | ||
1078 | struct gdb_ext_thread_info | |
c5aa993b JM |
1079 | { |
1080 | threadref threadid; /* External form of thread reference */ | |
1081 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1082 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1083 | char shortname[32]; /* To be used to name threads */ | |
1084 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1085 | }; | |
cce74817 JM |
1086 | |
1087 | /* The volume of remote transfers can be limited by submitting | |
1088 | a mask containing bits specifying the desired information. | |
1089 | Use a union of these values as the 'selection' parameter to | |
1090 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1091 | */ |
cce74817 JM |
1092 | |
1093 | #define TAG_THREADID 1 | |
1094 | #define TAG_EXISTS 2 | |
1095 | #define TAG_DISPLAY 4 | |
1096 | #define TAG_THREADNAME 8 | |
c5aa993b | 1097 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1098 | |
c906108c SS |
1099 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1100 | ||
b2dd6311 | 1101 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1102 | |
a14ed312 | 1103 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1104 | |
a14ed312 | 1105 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1106 | |
a14ed312 | 1107 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1108 | |
a14ed312 | 1109 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1110 | |
a14ed312 | 1111 | static char *pack_int (char *buf, int value); |
cce74817 | 1112 | |
a14ed312 | 1113 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1114 | |
a14ed312 | 1115 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1116 | |
a14ed312 | 1117 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1118 | |
a14ed312 | 1119 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1120 | |
a14ed312 | 1121 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1122 | |
a14ed312 | 1123 | static int threadref_to_int (threadref * ref); |
cce74817 | 1124 | |
a14ed312 | 1125 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1126 | |
a14ed312 | 1127 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1128 | |
a14ed312 | 1129 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1130 | |
a14ed312 KB |
1131 | static int remote_unpack_thread_info_response (char *pkt, |
1132 | threadref * expectedref, | |
1133 | struct gdb_ext_thread_info | |
1134 | *info); | |
cce74817 JM |
1135 | |
1136 | ||
a14ed312 KB |
1137 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1138 | struct gdb_ext_thread_info *info); | |
cce74817 | 1139 | |
a14ed312 KB |
1140 | static char *pack_threadlist_request (char *pkt, int startflag, |
1141 | int threadcount, | |
1142 | threadref * nextthread); | |
cce74817 | 1143 | |
a14ed312 KB |
1144 | static int parse_threadlist_response (char *pkt, |
1145 | int result_limit, | |
1146 | threadref * original_echo, | |
1147 | threadref * resultlist, int *doneflag); | |
cce74817 | 1148 | |
a14ed312 KB |
1149 | static int remote_get_threadlist (int startflag, |
1150 | threadref * nextthread, | |
1151 | int result_limit, | |
1152 | int *done, | |
1153 | int *result_count, threadref * threadlist); | |
cce74817 | 1154 | |
c5aa993b | 1155 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1156 | |
a14ed312 KB |
1157 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1158 | void *context, int looplimit); | |
cce74817 | 1159 | |
a14ed312 | 1160 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1161 | |
c906108c SS |
1162 | /* encode 64 bits in 16 chars of hex */ |
1163 | ||
1164 | static const char hexchars[] = "0123456789abcdef"; | |
1165 | ||
1166 | static int | |
fba45db2 | 1167 | ishex (int ch, int *val) |
c906108c SS |
1168 | { |
1169 | if ((ch >= 'a') && (ch <= 'f')) | |
1170 | { | |
1171 | *val = ch - 'a' + 10; | |
1172 | return 1; | |
1173 | } | |
1174 | if ((ch >= 'A') && (ch <= 'F')) | |
1175 | { | |
1176 | *val = ch - 'A' + 10; | |
1177 | return 1; | |
1178 | } | |
1179 | if ((ch >= '0') && (ch <= '9')) | |
1180 | { | |
1181 | *val = ch - '0'; | |
1182 | return 1; | |
1183 | } | |
1184 | return 0; | |
1185 | } | |
1186 | ||
1187 | static int | |
fba45db2 | 1188 | stubhex (int ch) |
c906108c SS |
1189 | { |
1190 | if (ch >= 'a' && ch <= 'f') | |
1191 | return ch - 'a' + 10; | |
1192 | if (ch >= '0' && ch <= '9') | |
1193 | return ch - '0'; | |
1194 | if (ch >= 'A' && ch <= 'F') | |
1195 | return ch - 'A' + 10; | |
1196 | return -1; | |
1197 | } | |
1198 | ||
1199 | static int | |
fba45db2 | 1200 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1201 | { |
1202 | int nibble; | |
1203 | int retval = 0; | |
1204 | ||
1205 | while (fieldlength) | |
1206 | { | |
1207 | nibble = stubhex (*buff++); | |
1208 | retval |= nibble; | |
1209 | fieldlength--; | |
1210 | if (fieldlength) | |
1211 | retval = retval << 4; | |
1212 | } | |
1213 | return retval; | |
1214 | } | |
1215 | ||
1216 | char * | |
fba45db2 | 1217 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1218 | ULONGEST *result) |
c906108c SS |
1219 | { |
1220 | int nibble; | |
1221 | int retval = 0; | |
1222 | ||
1223 | while (ishex (*buff, &nibble)) | |
1224 | { | |
1225 | buff++; | |
1226 | retval = retval << 4; | |
1227 | retval |= nibble & 0x0f; | |
1228 | } | |
1229 | *result = retval; | |
1230 | return buff; | |
1231 | } | |
1232 | ||
1233 | static char * | |
fba45db2 | 1234 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1235 | { |
1236 | ishex (*buf++, val); | |
1237 | return buf; | |
1238 | } | |
1239 | ||
1240 | static char * | |
fba45db2 | 1241 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1242 | { |
1243 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1244 | return buf; | |
1245 | } | |
1246 | ||
1247 | static char * | |
fba45db2 | 1248 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1249 | { |
1250 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1251 | *pkt++ = hexchars[(byte & 0xf)]; | |
1252 | return pkt; | |
1253 | } | |
1254 | ||
1255 | static char * | |
fba45db2 | 1256 | unpack_byte (char *buf, int *value) |
c906108c SS |
1257 | { |
1258 | *value = stub_unpack_int (buf, 2); | |
1259 | return buf + 2; | |
1260 | } | |
1261 | ||
1262 | static char * | |
fba45db2 | 1263 | pack_int (char *buf, int value) |
c906108c SS |
1264 | { |
1265 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1266 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1267 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1268 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1269 | return buf; | |
1270 | } | |
1271 | ||
1272 | static char * | |
fba45db2 | 1273 | unpack_int (char *buf, int *value) |
c906108c SS |
1274 | { |
1275 | *value = stub_unpack_int (buf, 8); | |
1276 | return buf + 8; | |
1277 | } | |
1278 | ||
c5aa993b | 1279 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1280 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1281 | |
1282 | static char * | |
fba45db2 | 1283 | pack_string (char *pkt, char *string) |
c906108c SS |
1284 | { |
1285 | char ch; | |
1286 | int len; | |
1287 | ||
1288 | len = strlen (string); | |
1289 | if (len > 200) | |
1290 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1291 | pkt = pack_hex_byte (pkt, len); | |
1292 | while (len-- > 0) | |
1293 | { | |
1294 | ch = *string++; | |
1295 | if ((ch == '\0') || (ch == '#')) | |
1296 | ch = '*'; /* Protect encapsulation */ | |
1297 | *pkt++ = ch; | |
1298 | } | |
1299 | return pkt; | |
1300 | } | |
1301 | #endif /* 0 (unused) */ | |
1302 | ||
1303 | static char * | |
fba45db2 | 1304 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1305 | { |
1306 | while (length--) | |
1307 | *dest++ = *src++; | |
1308 | *dest = '\0'; | |
1309 | return src; | |
1310 | } | |
1311 | ||
1312 | static char * | |
fba45db2 | 1313 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1314 | { |
1315 | char *limit; | |
1316 | unsigned char *altid; | |
1317 | ||
1318 | altid = (unsigned char *) id; | |
1319 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1320 | while (pkt < limit) | |
1321 | pkt = pack_hex_byte (pkt, *altid++); | |
1322 | return pkt; | |
1323 | } | |
1324 | ||
1325 | ||
1326 | static char * | |
fba45db2 | 1327 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1328 | { |
1329 | char *altref; | |
1330 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1331 | int x, y; | |
1332 | ||
1333 | altref = (char *) id; | |
1334 | ||
1335 | while (inbuf < limit) | |
1336 | { | |
1337 | x = stubhex (*inbuf++); | |
1338 | y = stubhex (*inbuf++); | |
1339 | *altref++ = (x << 4) | y; | |
1340 | } | |
1341 | return inbuf; | |
1342 | } | |
1343 | ||
1344 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1345 | ints. This is due to a mismatch of specifications. We would like | |
1346 | to use 64bit thread references internally. This is an adapter | |
1347 | function. */ | |
1348 | ||
1349 | void | |
fba45db2 | 1350 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1351 | { |
1352 | unsigned char *scan; | |
1353 | ||
1354 | scan = (unsigned char *) id; | |
1355 | { | |
1356 | int i = 4; | |
1357 | while (i--) | |
1358 | *scan++ = 0; | |
1359 | } | |
1360 | *scan++ = (value >> 24) & 0xff; | |
1361 | *scan++ = (value >> 16) & 0xff; | |
1362 | *scan++ = (value >> 8) & 0xff; | |
1363 | *scan++ = (value & 0xff); | |
1364 | } | |
1365 | ||
1366 | static int | |
fba45db2 | 1367 | threadref_to_int (threadref *ref) |
c906108c SS |
1368 | { |
1369 | int i, value = 0; | |
1370 | unsigned char *scan; | |
1371 | ||
1372 | scan = (char *) ref; | |
1373 | scan += 4; | |
1374 | i = 4; | |
1375 | while (i-- > 0) | |
1376 | value = (value << 8) | ((*scan++) & 0xff); | |
1377 | return value; | |
1378 | } | |
1379 | ||
1380 | static void | |
fba45db2 | 1381 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1382 | { |
1383 | int i; | |
1384 | unsigned char *csrc, *cdest; | |
1385 | ||
1386 | csrc = (unsigned char *) src; | |
1387 | cdest = (unsigned char *) dest; | |
1388 | i = 8; | |
1389 | while (i--) | |
1390 | *cdest++ = *csrc++; | |
1391 | } | |
1392 | ||
1393 | static int | |
fba45db2 | 1394 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1395 | { |
1396 | /* things are broken right now, so just assume we got a match */ | |
1397 | #if 0 | |
1398 | unsigned char *srcp, *destp; | |
1399 | int i, result; | |
1400 | srcp = (char *) src; | |
1401 | destp = (char *) dest; | |
1402 | ||
1403 | result = 1; | |
1404 | while (i-- > 0) | |
1405 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1406 | return result; | |
1407 | #endif | |
1408 | return 1; | |
1409 | } | |
1410 | ||
1411 | /* | |
c5aa993b JM |
1412 | threadid:1, # always request threadid |
1413 | context_exists:2, | |
1414 | display:4, | |
1415 | unique_name:8, | |
1416 | more_display:16 | |
1417 | */ | |
c906108c SS |
1418 | |
1419 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1420 | ||
1421 | static char * | |
fba45db2 | 1422 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1423 | { |
1424 | *pkt++ = 'q'; /* Info Query */ | |
1425 | *pkt++ = 'P'; /* process or thread info */ | |
1426 | pkt = pack_int (pkt, mode); /* mode */ | |
1427 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1428 | *pkt = '\0'; /* terminate */ | |
1429 | return pkt; | |
1430 | } | |
1431 | ||
1432 | /* These values tag the fields in a thread info response packet */ | |
1433 | /* Tagging the fields allows us to request specific fields and to | |
1434 | add more fields as time goes by */ | |
1435 | ||
c5aa993b JM |
1436 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1437 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1438 | fetch registers and its stack */ | |
1439 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1440 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
802188a7 | 1441 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
c5aa993b | 1442 | the process */ |
c906108c SS |
1443 | |
1444 | static int | |
fba45db2 KB |
1445 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1446 | struct gdb_ext_thread_info *info) | |
c906108c | 1447 | { |
d01949b6 | 1448 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1449 | int mask, length; |
1450 | unsigned int tag; | |
1451 | threadref ref; | |
d01949b6 | 1452 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1453 | int retval = 1; |
1454 | ||
1455 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1456 | info->active = 0; | |
1457 | info->display[0] = '\0'; | |
1458 | info->shortname[0] = '\0'; | |
1459 | info->more_display[0] = '\0'; | |
1460 | ||
1461 | /* Assume the characters indicating the packet type have been stripped */ | |
1462 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1463 | pkt = unpack_threadid (pkt, &ref); | |
1464 | ||
1465 | if (mask == 0) | |
1466 | warning ("Incomplete response to threadinfo request\n"); | |
1467 | if (!threadmatch (&ref, expectedref)) | |
1468 | { /* This is an answer to a different request */ | |
1469 | warning ("ERROR RMT Thread info mismatch\n"); | |
1470 | return 0; | |
1471 | } | |
1472 | copy_threadref (&info->threadid, &ref); | |
1473 | ||
1474 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1475 | ||
c5aa993b | 1476 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1477 | { |
1478 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1479 | pkt = unpack_byte (pkt, &length); /* length */ | |
1480 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1481 | { | |
1482 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1483 | retval = 0; | |
1484 | break; | |
1485 | } | |
1486 | if (tag == TAG_THREADID) | |
1487 | { | |
1488 | if (length != 16) | |
1489 | { | |
1490 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1491 | retval = 0; | |
1492 | break; | |
1493 | } | |
1494 | pkt = unpack_threadid (pkt, &ref); | |
1495 | mask = mask & ~TAG_THREADID; | |
1496 | continue; | |
1497 | } | |
1498 | if (tag == TAG_EXISTS) | |
1499 | { | |
1500 | info->active = stub_unpack_int (pkt, length); | |
1501 | pkt += length; | |
1502 | mask = mask & ~(TAG_EXISTS); | |
1503 | if (length > 8) | |
1504 | { | |
1505 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1506 | retval = 0; | |
1507 | break; | |
1508 | } | |
1509 | continue; | |
1510 | } | |
1511 | if (tag == TAG_THREADNAME) | |
1512 | { | |
1513 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1514 | mask = mask & ~TAG_THREADNAME; | |
1515 | continue; | |
1516 | } | |
1517 | if (tag == TAG_DISPLAY) | |
1518 | { | |
1519 | pkt = unpack_string (pkt, &info->display[0], length); | |
1520 | mask = mask & ~TAG_DISPLAY; | |
1521 | continue; | |
1522 | } | |
1523 | if (tag == TAG_MOREDISPLAY) | |
1524 | { | |
1525 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1526 | mask = mask & ~TAG_MOREDISPLAY; | |
1527 | continue; | |
1528 | } | |
1529 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1530 | break; /* Not a tag we know about */ | |
1531 | } | |
1532 | return retval; | |
1533 | } | |
1534 | ||
1535 | static int | |
fba45db2 KB |
1536 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1537 | struct gdb_ext_thread_info *info) | |
c906108c | 1538 | { |
d01949b6 | 1539 | struct remote_state *rs = get_remote_state (); |
c906108c | 1540 | int result; |
d01949b6 | 1541 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1542 | |
1543 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1544 | putpkt (threadinfo_pkt); | |
d01949b6 | 1545 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1546 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1547 | info); | |
1548 | return result; | |
1549 | } | |
1550 | ||
c906108c SS |
1551 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1552 | ||
1553 | static char * | |
fba45db2 KB |
1554 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1555 | threadref *nextthread) | |
c906108c SS |
1556 | { |
1557 | *pkt++ = 'q'; /* info query packet */ | |
1558 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1559 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1560 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1561 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1562 | *pkt = '\0'; | |
1563 | return pkt; | |
1564 | } | |
1565 | ||
1566 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1567 | ||
1568 | static int | |
fba45db2 KB |
1569 | parse_threadlist_response (char *pkt, int result_limit, |
1570 | threadref *original_echo, threadref *resultlist, | |
1571 | int *doneflag) | |
c906108c | 1572 | { |
d01949b6 | 1573 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1574 | char *limit; |
1575 | int count, resultcount, done; | |
1576 | ||
1577 | resultcount = 0; | |
1578 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1579 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1580 | pkt = unpack_byte (pkt, &count); /* count field */ |
1581 | pkt = unpack_nibble (pkt, &done); | |
1582 | /* The first threadid is the argument threadid. */ | |
1583 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1584 | while ((count-- > 0) && (pkt < limit)) | |
1585 | { | |
1586 | pkt = unpack_threadid (pkt, resultlist++); | |
1587 | if (resultcount++ >= result_limit) | |
1588 | break; | |
1589 | } | |
1590 | if (doneflag) | |
1591 | *doneflag = done; | |
1592 | return resultcount; | |
1593 | } | |
1594 | ||
1595 | static int | |
fba45db2 KB |
1596 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1597 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1598 | { |
d01949b6 | 1599 | struct remote_state *rs = get_remote_state (); |
c906108c | 1600 | static threadref echo_nextthread; |
d01949b6 AC |
1601 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1602 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1603 | int result = 1; |
1604 | ||
1605 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1606 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1607 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1608 | |
1609 | pack_threadlist_request (threadlist_packet, | |
1610 | startflag, result_limit, nextthread); | |
1611 | putpkt (threadlist_packet); | |
d01949b6 | 1612 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1613 | |
1614 | *result_count = | |
1615 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1616 | threadlist, done); | |
1617 | ||
1618 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1619 | { | |
1620 | /* FIXME: This is a good reason to drop the packet */ | |
1621 | /* Possably, there is a duplicate response */ | |
1622 | /* Possabilities : | |
1623 | retransmit immediatly - race conditions | |
1624 | retransmit after timeout - yes | |
1625 | exit | |
1626 | wait for packet, then exit | |
1627 | */ | |
1628 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1629 | return 0; /* I choose simply exiting */ | |
1630 | } | |
1631 | if (*result_count <= 0) | |
1632 | { | |
1633 | if (*done != 1) | |
1634 | { | |
1635 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1636 | result = 0; | |
1637 | } | |
1638 | return result; /* break; */ | |
1639 | } | |
1640 | if (*result_count > result_limit) | |
1641 | { | |
1642 | *result_count = 0; | |
1643 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1644 | return 0; | |
1645 | } | |
1646 | return result; | |
1647 | } | |
1648 | ||
1649 | /* This is the interface between remote and threads, remotes upper interface */ | |
1650 | ||
1651 | /* remote_find_new_threads retrieves the thread list and for each | |
1652 | thread in the list, looks up the thread in GDB's internal list, | |
1653 | ading the thread if it does not already exist. This involves | |
1654 | getting partial thread lists from the remote target so, polling the | |
1655 | quit_flag is required. */ | |
1656 | ||
1657 | ||
1658 | /* About this many threadisds fit in a packet. */ | |
1659 | ||
1660 | #define MAXTHREADLISTRESULTS 32 | |
1661 | ||
1662 | static int | |
fba45db2 KB |
1663 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1664 | int looplimit) | |
c906108c SS |
1665 | { |
1666 | int done, i, result_count; | |
1667 | int startflag = 1; | |
1668 | int result = 1; | |
1669 | int loopcount = 0; | |
1670 | static threadref nextthread; | |
1671 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1672 | ||
1673 | done = 0; | |
1674 | while (!done) | |
1675 | { | |
1676 | if (loopcount++ > looplimit) | |
1677 | { | |
1678 | result = 0; | |
1679 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1680 | break; | |
1681 | } | |
1682 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1683 | &done, &result_count, resultthreadlist)) | |
1684 | { | |
1685 | result = 0; | |
1686 | break; | |
1687 | } | |
1688 | /* clear for later iterations */ | |
1689 | startflag = 0; | |
1690 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1691 | if (result_count >= 1) | |
1692 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1693 | i = 0; | |
1694 | while (result_count--) | |
1695 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1696 | break; | |
1697 | } | |
1698 | return result; | |
1699 | } | |
1700 | ||
1701 | static int | |
fba45db2 | 1702 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1703 | { |
39f77062 | 1704 | ptid_t ptid; |
c906108c | 1705 | |
39f77062 KB |
1706 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1707 | ||
1708 | if (!in_thread_list (ptid)) | |
1709 | add_thread (ptid); | |
c906108c SS |
1710 | return 1; /* continue iterator */ |
1711 | } | |
1712 | ||
1713 | #define CRAZY_MAX_THREADS 1000 | |
1714 | ||
39f77062 KB |
1715 | static ptid_t |
1716 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1717 | { |
d01949b6 AC |
1718 | struct remote_state *rs = get_remote_state (); |
1719 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1720 | |
1721 | putpkt ("qC"); | |
d01949b6 | 1722 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1723 | if (buf[0] == 'Q' && buf[1] == 'C') |
39f77062 | 1724 | return pid_to_ptid (strtol (&buf[2], NULL, 16)); |
c906108c SS |
1725 | else |
1726 | return oldpid; | |
1727 | } | |
1728 | ||
802188a7 RM |
1729 | /* Find new threads for info threads command. |
1730 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1731 | */ |
cce74817 JM |
1732 | |
1733 | static void | |
fba45db2 | 1734 | remote_find_new_threads (void) |
c906108c | 1735 | { |
c5aa993b JM |
1736 | remote_threadlist_iterator (remote_newthread_step, 0, |
1737 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1738 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1739 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1740 | } |
1741 | ||
9d1f7ab2 MS |
1742 | /* |
1743 | * Find all threads for info threads command. | |
1744 | * Uses new thread protocol contributed by Cisco. | |
1745 | * Falls back and attempts to use the older method (above) | |
1746 | * if the target doesn't respond to the new method. | |
1747 | */ | |
1748 | ||
0f71a2f6 JM |
1749 | static void |
1750 | remote_threads_info (void) | |
1751 | { | |
d01949b6 AC |
1752 | struct remote_state *rs = get_remote_state (); |
1753 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1754 | char *bufp; |
0f71a2f6 JM |
1755 | int tid; |
1756 | ||
1757 | if (remote_desc == 0) /* paranoia */ | |
1758 | error ("Command can only be used when connected to the remote target."); | |
1759 | ||
9d1f7ab2 MS |
1760 | if (use_threadinfo_query) |
1761 | { | |
1762 | putpkt ("qfThreadInfo"); | |
1763 | bufp = buf; | |
d01949b6 | 1764 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 | 1765 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1766 | { |
9d1f7ab2 MS |
1767 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1768 | { | |
1769 | do | |
1770 | { | |
1771 | tid = strtol (bufp, &bufp, 16); | |
39f77062 KB |
1772 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1773 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1774 | } |
1775 | while (*bufp++ == ','); /* comma-separated list */ | |
1776 | putpkt ("qsThreadInfo"); | |
1777 | bufp = buf; | |
d01949b6 | 1778 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1779 | } |
1780 | return; /* done */ | |
1781 | } | |
1782 | } | |
1783 | ||
1784 | /* Else fall back to old method based on jmetzler protocol. */ | |
1785 | use_threadinfo_query = 0; | |
1786 | remote_find_new_threads (); | |
1787 | return; | |
1788 | } | |
1789 | ||
802188a7 | 1790 | /* |
9d1f7ab2 MS |
1791 | * Collect a descriptive string about the given thread. |
1792 | * The target may say anything it wants to about the thread | |
1793 | * (typically info about its blocked / runnable state, name, etc.). | |
1794 | * This string will appear in the info threads display. | |
802188a7 | 1795 | * |
9d1f7ab2 MS |
1796 | * Optional: targets are not required to implement this function. |
1797 | */ | |
1798 | ||
1799 | static char * | |
1800 | remote_threads_extra_info (struct thread_info *tp) | |
1801 | { | |
d01949b6 | 1802 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1803 | int result; |
1804 | int set; | |
1805 | threadref id; | |
1806 | struct gdb_ext_thread_info threadinfo; | |
1807 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1808 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1809 | int n = 0; /* position in display_buf */ |
1810 | ||
1811 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1812 | internal_error (__FILE__, __LINE__, |
1813 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1814 | |
1815 | if (use_threadextra_query) | |
1816 | { | |
39f77062 | 1817 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1818 | putpkt (bufp); |
d01949b6 | 1819 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1820 | if (bufp[0] != 0) |
1821 | { | |
30559e10 MS |
1822 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1823 | result = hex2bin (bufp, display_buf, n); | |
1824 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1825 | return display_buf; |
1826 | } | |
0f71a2f6 | 1827 | } |
9d1f7ab2 MS |
1828 | |
1829 | /* If the above query fails, fall back to the old method. */ | |
1830 | use_threadextra_query = 0; | |
1831 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1832 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1833 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1834 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1835 | if (threadinfo.active) | |
0f71a2f6 | 1836 | { |
9d1f7ab2 MS |
1837 | if (*threadinfo.shortname) |
1838 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1839 | if (*threadinfo.display) | |
1840 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1841 | if (*threadinfo.more_display) | |
1842 | n += sprintf(&display_buf[n], " Priority: %s", | |
1843 | threadinfo.more_display); | |
1844 | ||
1845 | if (n > 0) | |
c5aa993b | 1846 | { |
9d1f7ab2 MS |
1847 | /* for purely cosmetic reasons, clear up trailing commas */ |
1848 | if (',' == display_buf[n-1]) | |
1849 | display_buf[n-1] = ' '; | |
1850 | return display_buf; | |
c5aa993b | 1851 | } |
0f71a2f6 | 1852 | } |
9d1f7ab2 | 1853 | return NULL; |
0f71a2f6 | 1854 | } |
9d1f7ab2 | 1855 | |
c906108c | 1856 | \f |
c5aa993b | 1857 | |
c906108c SS |
1858 | /* Restart the remote side; this is an extended protocol operation. */ |
1859 | ||
1860 | static void | |
fba45db2 | 1861 | extended_remote_restart (void) |
c906108c | 1862 | { |
d01949b6 AC |
1863 | struct remote_state *rs = get_remote_state (); |
1864 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1865 | |
1866 | /* Send the restart command; for reasons I don't understand the | |
1867 | remote side really expects a number after the "R". */ | |
1868 | buf[0] = 'R'; | |
1869 | sprintf (&buf[1], "%x", 0); | |
1870 | putpkt (buf); | |
1871 | ||
1872 | /* Now query for status so this looks just like we restarted | |
1873 | gdbserver from scratch. */ | |
1874 | putpkt ("?"); | |
d01949b6 | 1875 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1876 | } |
1877 | \f | |
1878 | /* Clean up connection to a remote debugger. */ | |
1879 | ||
c906108c | 1880 | static void |
fba45db2 | 1881 | remote_close (int quitting) |
c906108c SS |
1882 | { |
1883 | if (remote_desc) | |
2cd58942 | 1884 | serial_close (remote_desc); |
c906108c SS |
1885 | remote_desc = NULL; |
1886 | } | |
1887 | ||
1888 | /* Query the remote side for the text, data and bss offsets. */ | |
1889 | ||
1890 | static void | |
fba45db2 | 1891 | get_offsets (void) |
c906108c | 1892 | { |
d01949b6 AC |
1893 | struct remote_state *rs = get_remote_state (); |
1894 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1895 | char *ptr; |
c906108c SS |
1896 | int lose; |
1897 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1898 | struct section_offsets *offs; | |
1899 | ||
1900 | putpkt ("qOffsets"); | |
1901 | ||
d01949b6 | 1902 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1903 | |
1904 | if (buf[0] == '\000') | |
1905 | return; /* Return silently. Stub doesn't support | |
1906 | this command. */ | |
1907 | if (buf[0] == 'E') | |
1908 | { | |
1909 | warning ("Remote failure reply: %s", buf); | |
1910 | return; | |
1911 | } | |
1912 | ||
1913 | /* Pick up each field in turn. This used to be done with scanf, but | |
1914 | scanf will make trouble if CORE_ADDR size doesn't match | |
1915 | conversion directives correctly. The following code will work | |
1916 | with any size of CORE_ADDR. */ | |
1917 | text_addr = data_addr = bss_addr = 0; | |
1918 | ptr = buf; | |
1919 | lose = 0; | |
1920 | ||
1921 | if (strncmp (ptr, "Text=", 5) == 0) | |
1922 | { | |
1923 | ptr += 5; | |
1924 | /* Don't use strtol, could lose on big values. */ | |
1925 | while (*ptr && *ptr != ';') | |
1926 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1927 | } | |
1928 | else | |
1929 | lose = 1; | |
1930 | ||
1931 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1932 | { | |
1933 | ptr += 6; | |
1934 | while (*ptr && *ptr != ';') | |
1935 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1936 | } | |
1937 | else | |
1938 | lose = 1; | |
1939 | ||
1940 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1941 | { | |
1942 | ptr += 5; | |
1943 | while (*ptr && *ptr != ';') | |
1944 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1945 | } | |
1946 | else | |
1947 | lose = 1; | |
1948 | ||
1949 | if (lose) | |
1950 | error ("Malformed response to offset query, %s", buf); | |
1951 | ||
1952 | if (symfile_objfile == NULL) | |
1953 | return; | |
1954 | ||
802188a7 | 1955 | offs = ((struct section_offsets *) |
a39a16c4 | 1956 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1957 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1958 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1959 | |
a4c8257b | 1960 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1961 | |
1962 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1963 | because that's what nlmconv does now. The real solution requires changes | |
1964 | to the stub and remote.c that I don't have time to do right now. */ | |
1965 | ||
a4c8257b EZ |
1966 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1967 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1968 | |
1969 | objfile_relocate (symfile_objfile, offs); | |
1970 | } | |
1971 | ||
1972 | /* Stub for catch_errors. */ | |
1973 | ||
0f71a2f6 | 1974 | static int |
36918e70 | 1975 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 JM |
1976 | { |
1977 | start_remote (); /* Initialize gdb process mechanisms */ | |
36918e70 AC |
1978 | /* NOTE: Return something >=0. A -ve value is reserved for |
1979 | catch_exceptions. */ | |
0f71a2f6 JM |
1980 | return 1; |
1981 | } | |
1982 | ||
c906108c | 1983 | static int |
36918e70 | 1984 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 1985 | { |
8edbea78 | 1986 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
1987 | |
1988 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 1989 | serial_write (remote_desc, "+", 1); |
c906108c SS |
1990 | |
1991 | /* Let the stub know that we want it to return the thread. */ | |
1992 | set_thread (-1, 0); | |
1993 | ||
39f77062 | 1994 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
1995 | |
1996 | get_offsets (); /* Get text, data & bss offsets */ | |
1997 | ||
1998 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 1999 | immediate_quit--; |
c906108c | 2000 | |
36918e70 AC |
2001 | /* NOTE: See comment above in remote_start_remote_dummy(). This |
2002 | function returns something >=0. */ | |
2003 | return remote_start_remote_dummy (uiout, dummy); | |
c906108c SS |
2004 | } |
2005 | ||
2006 | /* Open a connection to a remote debugger. | |
2007 | NAME is the filename used for communication. */ | |
2008 | ||
2009 | static void | |
fba45db2 | 2010 | remote_open (char *name, int from_tty) |
c906108c | 2011 | { |
92d1e331 | 2012 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2013 | } |
2014 | ||
43ff13b4 JM |
2015 | /* Just like remote_open, but with asynchronous support. */ |
2016 | static void | |
fba45db2 | 2017 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2018 | { |
92d1e331 | 2019 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2020 | } |
2021 | ||
c906108c SS |
2022 | /* Open a connection to a remote debugger using the extended |
2023 | remote gdb protocol. NAME is the filename used for communication. */ | |
2024 | ||
2025 | static void | |
fba45db2 | 2026 | extended_remote_open (char *name, int from_tty) |
c906108c | 2027 | { |
92d1e331 DJ |
2028 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2029 | 0 /* async_p */); | |
c906108c SS |
2030 | } |
2031 | ||
43ff13b4 JM |
2032 | /* Just like extended_remote_open, but with asynchronous support. */ |
2033 | static void | |
fba45db2 | 2034 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2035 | { |
92d1e331 DJ |
2036 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2037 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2038 | } |
2039 | ||
c906108c SS |
2040 | /* Generic code for opening a connection to a remote target. */ |
2041 | ||
d471ea57 AC |
2042 | static void |
2043 | init_all_packet_configs (void) | |
2044 | { | |
2045 | int i; | |
2046 | update_packet_config (&remote_protocol_P); | |
dc8acb97 | 2047 | update_packet_config (&remote_protocol_qSymbol); |
506fb367 | 2048 | update_packet_config (&remote_protocol_vcont); |
d471ea57 AC |
2049 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2050 | update_packet_config (&remote_protocol_Z[i]); | |
2051 | /* Force remote_write_bytes to check whether target supports binary | |
2052 | downloading. */ | |
2053 | update_packet_config (&remote_protocol_binary_download); | |
802188a7 | 2054 | update_packet_config (&remote_protocol_qPart_auxv); |
d471ea57 AC |
2055 | } |
2056 | ||
dc8acb97 MS |
2057 | /* Symbol look-up. */ |
2058 | ||
2059 | static void | |
2060 | remote_check_symbols (struct objfile *objfile) | |
2061 | { | |
d01949b6 | 2062 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2063 | char *msg, *reply, *tmp; |
2064 | struct minimal_symbol *sym; | |
2065 | int end; | |
2066 | ||
2067 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2068 | return; | |
2069 | ||
d01949b6 AC |
2070 | msg = alloca (rs->remote_packet_size); |
2071 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2072 | |
2073 | /* Invite target to request symbol lookups. */ | |
2074 | ||
2075 | putpkt ("qSymbol::"); | |
d01949b6 | 2076 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2077 | packet_ok (reply, &remote_protocol_qSymbol); |
2078 | ||
2079 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2080 | { | |
2081 | tmp = &reply[8]; | |
2082 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2083 | msg[end] = '\0'; | |
2084 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2085 | if (sym == NULL) | |
2086 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2087 | else | |
802188a7 | 2088 | sprintf (msg, "qSymbol:%s:%s", |
dc8acb97 MS |
2089 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2090 | &reply[8]); | |
2091 | putpkt (msg); | |
d01949b6 | 2092 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2093 | } |
2094 | } | |
2095 | ||
9db8d71f DJ |
2096 | static struct serial * |
2097 | remote_serial_open (char *name) | |
2098 | { | |
2099 | static int udp_warning = 0; | |
2100 | ||
2101 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2102 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2103 | serial connection is reliable and not the serial connection promising | |
2104 | to be. */ | |
2105 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2106 | { | |
2107 | warning ("The remote protocol may be unreliable over UDP."); | |
2108 | warning ("Some events may be lost, rendering further debugging " | |
2109 | "impossible."); | |
2110 | udp_warning = 1; | |
2111 | } | |
2112 | ||
2113 | return serial_open (name); | |
2114 | } | |
2115 | ||
c906108c | 2116 | static void |
fba45db2 | 2117 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2118 | int extended_p, int async_p) |
c906108c | 2119 | { |
36918e70 | 2120 | int ex; |
d01949b6 | 2121 | struct remote_state *rs = get_remote_state (); |
c906108c | 2122 | if (name == 0) |
22e04375 AC |
2123 | error ("To open a remote debug connection, you need to specify what\n" |
2124 | "serial device is attached to the remote system\n" | |
2125 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2126 | |
6426a772 | 2127 | /* See FIXME above */ |
92d1e331 DJ |
2128 | if (!async_p) |
2129 | wait_forever_enabled_p = 1; | |
6426a772 | 2130 | |
00cac895 DJ |
2131 | reopen_exec_file (); |
2132 | reread_symbols (); | |
2133 | ||
c906108c SS |
2134 | target_preopen (from_tty); |
2135 | ||
2136 | unpush_target (target); | |
2137 | ||
9db8d71f | 2138 | remote_desc = remote_serial_open (name); |
c906108c SS |
2139 | if (!remote_desc) |
2140 | perror_with_name (name); | |
2141 | ||
2142 | if (baud_rate != -1) | |
2143 | { | |
2cd58942 | 2144 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2145 | { |
9b74d5d3 KB |
2146 | /* The requested speed could not be set. Error out to |
2147 | top level after closing remote_desc. Take care to | |
2148 | set remote_desc to NULL to avoid closing remote_desc | |
2149 | more than once. */ | |
2cd58942 | 2150 | serial_close (remote_desc); |
9b74d5d3 | 2151 | remote_desc = NULL; |
c906108c SS |
2152 | perror_with_name (name); |
2153 | } | |
2154 | } | |
2155 | ||
2cd58942 | 2156 | serial_raw (remote_desc); |
c906108c SS |
2157 | |
2158 | /* If there is something sitting in the buffer we might take it as a | |
2159 | response to a command, which would be bad. */ | |
2cd58942 | 2160 | serial_flush_input (remote_desc); |
c906108c SS |
2161 | |
2162 | if (from_tty) | |
2163 | { | |
2164 | puts_filtered ("Remote debugging using "); | |
2165 | puts_filtered (name); | |
2166 | puts_filtered ("\n"); | |
2167 | } | |
c5aa993b | 2168 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2169 | |
d471ea57 | 2170 | init_all_packet_configs (); |
802188a7 | 2171 | |
c5aa993b | 2172 | general_thread = -2; |
cce74817 | 2173 | continue_thread = -2; |
c906108c | 2174 | |
9d1f7ab2 MS |
2175 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2176 | use_threadinfo_query = 1; | |
2177 | use_threadextra_query = 1; | |
2178 | ||
c906108c SS |
2179 | /* Without this, some commands which require an active target (such |
2180 | as kill) won't work. This variable serves (at least) double duty | |
2181 | as both the pid of the target process (if it has such), and as a | |
2182 | flag indicating that a target is active. These functions should | |
2183 | be split out into seperate variables, especially since GDB will | |
2184 | someday have a notion of debugging several processes. */ | |
2185 | ||
39f77062 | 2186 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2187 | |
2188 | if (async_p) | |
2189 | { | |
2190 | /* With this target we start out by owning the terminal. */ | |
2191 | remote_async_terminal_ours_p = 1; | |
2192 | ||
2193 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2194 | assumed that the target is already ready and able to respond to | |
2195 | requests. Unfortunately remote_start_remote() eventually calls | |
2196 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2197 | around this. Eventually a mechanism that allows | |
2198 | wait_for_inferior() to expect/get timeouts will be | |
2199 | implemented. */ | |
2200 | wait_forever_enabled_p = 0; | |
2201 | } | |
2202 | ||
f78f6cf1 MS |
2203 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2204 | /* First delete any symbols previously loaded from shared libraries. */ | |
2205 | no_shared_libraries (NULL, 0); | |
2206 | #endif | |
2207 | ||
36918e70 | 2208 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2209 | target (we'd otherwise be in an inconsistent state) and then |
2210 | propogate the error on up the exception chain. This ensures that | |
2211 | the caller doesn't stumble along blindly assuming that the | |
2212 | function succeeded. The CLI doesn't have this problem but other | |
2213 | UI's, such as MI do. | |
36918e70 AC |
2214 | |
2215 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2216 | this function should return an error indication letting the | |
ce2826aa | 2217 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2218 | ``target remote'' is directly wired to this function making that |
2219 | impossible. On a positive note, the CLI side of this problem has | |
2220 | been fixed - the function set_cmd_context() makes it possible for | |
2221 | all the ``target ....'' commands to share a common callback | |
2222 | function. See cli-dump.c. */ | |
2223 | ex = catch_exceptions (uiout, | |
2224 | remote_start_remote, NULL, | |
2225 | "Couldn't establish connection to remote" | |
2226 | " target\n", | |
2227 | RETURN_MASK_ALL); | |
2228 | if (ex < 0) | |
c906108c SS |
2229 | { |
2230 | pop_target (); | |
92d1e331 DJ |
2231 | if (async_p) |
2232 | wait_forever_enabled_p = 1; | |
165b8e33 | 2233 | throw_exception (ex); |
c906108c SS |
2234 | } |
2235 | ||
92d1e331 DJ |
2236 | if (async_p) |
2237 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2238 | |
2239 | if (extended_p) | |
43ff13b4 | 2240 | { |
6240bebf | 2241 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2242 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2243 | putpkt ("!"); |
d01949b6 | 2244 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2245 | } |
f78f6cf1 | 2246 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
802188a7 RM |
2247 | /* FIXME: need a master target_open vector from which all |
2248 | remote_opens can be called, so that stuff like this can | |
6240bebf | 2249 | go there. Failing that, the following code must be copied |
802188a7 | 2250 | to the open function for any remote target that wants to |
6240bebf | 2251 | support svr4 shared libraries. */ |
f78f6cf1 MS |
2252 | |
2253 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2254 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2255 | { |
2256 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2257 | remote_check_symbols (symfile_objfile); | |
2258 | } | |
6240bebf | 2259 | #endif |
43ff13b4 JM |
2260 | } |
2261 | ||
c906108c SS |
2262 | /* This takes a program previously attached to and detaches it. After |
2263 | this is done, GDB can be used to debug some other program. We | |
2264 | better not have left any breakpoints in the target program or it'll | |
2265 | die when it hits one. */ | |
2266 | ||
2267 | static void | |
fba45db2 | 2268 | remote_detach (char *args, int from_tty) |
c906108c | 2269 | { |
d01949b6 AC |
2270 | struct remote_state *rs = get_remote_state (); |
2271 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2272 | |
2273 | if (args) | |
2274 | error ("Argument given to \"detach\" when remotely debugging."); | |
2275 | ||
2276 | /* Tell the remote target to detach. */ | |
2277 | strcpy (buf, "D"); | |
d01949b6 | 2278 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2279 | |
6ad8ae5c DJ |
2280 | /* Unregister the file descriptor from the event loop. */ |
2281 | if (target_is_async_p ()) | |
2282 | serial_async (remote_desc, NULL, 0); | |
2283 | ||
cca728d0 | 2284 | target_mourn_inferior (); |
c906108c SS |
2285 | if (from_tty) |
2286 | puts_filtered ("Ending remote debugging.\n"); | |
2287 | } | |
2288 | ||
6ad8ae5c DJ |
2289 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2290 | ||
43ff13b4 | 2291 | static void |
6ad8ae5c | 2292 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2293 | { |
d01949b6 AC |
2294 | struct remote_state *rs = get_remote_state (); |
2295 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2296 | |
2297 | if (args) | |
2298 | error ("Argument given to \"detach\" when remotely debugging."); | |
2299 | ||
43ff13b4 | 2300 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2301 | if (target_is_async_p ()) |
2cd58942 | 2302 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2303 | |
cca728d0 | 2304 | target_mourn_inferior (); |
43ff13b4 JM |
2305 | if (from_tty) |
2306 | puts_filtered ("Ending remote debugging.\n"); | |
2307 | } | |
2308 | ||
c906108c SS |
2309 | /* Convert hex digit A to a number. */ |
2310 | ||
30559e10 | 2311 | static int |
fba45db2 | 2312 | fromhex (int a) |
c906108c SS |
2313 | { |
2314 | if (a >= '0' && a <= '9') | |
2315 | return a - '0'; | |
2316 | else if (a >= 'a' && a <= 'f') | |
2317 | return a - 'a' + 10; | |
2318 | else if (a >= 'A' && a <= 'F') | |
2319 | return a - 'A' + 10; | |
c5aa993b | 2320 | else |
c906108c SS |
2321 | error ("Reply contains invalid hex digit %d", a); |
2322 | } | |
2323 | ||
30559e10 MS |
2324 | static int |
2325 | hex2bin (const char *hex, char *bin, int count) | |
2326 | { | |
2327 | int i; | |
2328 | ||
30559e10 MS |
2329 | for (i = 0; i < count; i++) |
2330 | { | |
2331 | if (hex[0] == 0 || hex[1] == 0) | |
2332 | { | |
2333 | /* Hex string is short, or of uneven length. | |
2334 | Return the count that has been converted so far. */ | |
2335 | return i; | |
2336 | } | |
2337 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2338 | hex += 2; | |
2339 | } | |
2340 | return i; | |
2341 | } | |
2342 | ||
c906108c SS |
2343 | /* Convert number NIB to a hex digit. */ |
2344 | ||
2345 | static int | |
fba45db2 | 2346 | tohex (int nib) |
c906108c SS |
2347 | { |
2348 | if (nib < 10) | |
c5aa993b | 2349 | return '0' + nib; |
c906108c | 2350 | else |
c5aa993b | 2351 | return 'a' + nib - 10; |
c906108c | 2352 | } |
30559e10 MS |
2353 | |
2354 | static int | |
234fa6d1 | 2355 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2356 | { |
2357 | int i; | |
2358 | /* May use a length, or a nul-terminated string as input. */ | |
2359 | if (count == 0) | |
2360 | count = strlen (bin); | |
2361 | ||
2362 | for (i = 0; i < count; i++) | |
2363 | { | |
2364 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2365 | *hex++ = tohex (*bin++ & 0xf); | |
2366 | } | |
2367 | *hex = 0; | |
2368 | return i; | |
2369 | } | |
c906108c | 2370 | \f |
506fb367 DJ |
2371 | /* Check for the availability of vCont. This function should also check |
2372 | the response. */ | |
c906108c SS |
2373 | |
2374 | static void | |
506fb367 | 2375 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2376 | { |
506fb367 DJ |
2377 | strcpy (buf, "vCont?"); |
2378 | putpkt (buf); | |
2379 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2380 | |
506fb367 DJ |
2381 | /* Make sure that the features we assume are supported. */ |
2382 | if (strncmp (buf, "vCont", 5) == 0) | |
2383 | { | |
2384 | char *p = &buf[5]; | |
2385 | int support_s, support_S, support_c, support_C; | |
2386 | ||
2387 | support_s = 0; | |
2388 | support_S = 0; | |
2389 | support_c = 0; | |
2390 | support_C = 0; | |
2391 | while (p && *p == ';') | |
2392 | { | |
2393 | p++; | |
2394 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2395 | support_s = 1; | |
2396 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2397 | support_S = 1; | |
2398 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2399 | support_c = 1; | |
2400 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2401 | support_C = 1; | |
2402 | ||
2403 | p = strchr (p, ';'); | |
2404 | } | |
c906108c | 2405 | |
506fb367 DJ |
2406 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2407 | BUF will make packet_ok disable the packet. */ | |
2408 | if (!support_s || !support_S || !support_c || !support_C) | |
2409 | buf[0] = 0; | |
2410 | } | |
c906108c | 2411 | |
506fb367 DJ |
2412 | packet_ok (buf, &remote_protocol_vcont); |
2413 | } | |
c906108c | 2414 | |
506fb367 DJ |
2415 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2416 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2417 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2418 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2419 | signalled is given in the global INFERIOR_PTID. This function returns | |
2420 | non-zero iff it resumes the inferior. | |
44eaed12 | 2421 | |
506fb367 DJ |
2422 | This function issues a strict subset of all possible vCont commands at the |
2423 | moment. */ | |
44eaed12 | 2424 | |
506fb367 DJ |
2425 | static int |
2426 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2427 | { | |
2428 | struct remote_state *rs = get_remote_state (); | |
2429 | int pid = PIDGET (ptid); | |
2963ee1d | 2430 | char *buf = NULL, *outbuf; |
506fb367 | 2431 | struct cleanup *old_cleanup; |
44eaed12 | 2432 | |
506fb367 DJ |
2433 | buf = xmalloc (rs->remote_packet_size); |
2434 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2435 | |
506fb367 DJ |
2436 | if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN) |
2437 | remote_vcont_probe (rs, buf); | |
44eaed12 | 2438 | |
506fb367 DJ |
2439 | if (remote_protocol_vcont.support == PACKET_DISABLE) |
2440 | { | |
2441 | do_cleanups (old_cleanup); | |
2442 | return 0; | |
44eaed12 C |
2443 | } |
2444 | ||
506fb367 DJ |
2445 | /* If we could generate a wider range of packets, we'd have to worry |
2446 | about overflowing BUF. Should there be a generic | |
2447 | "multi-part-packet" packet? */ | |
2448 | ||
2449 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2450 | { |
506fb367 DJ |
2451 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2452 | don't have any PID numbers the inferior will understand. Make sure | |
2453 | to only send forms that do not specify a PID. */ | |
2454 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2455 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2456 | else if (step) |
2963ee1d | 2457 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2458 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2459 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2460 | else |
2963ee1d | 2461 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2462 | } |
2463 | else if (pid == -1) | |
2464 | { | |
2465 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2466 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2467 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2468 | PIDGET (inferior_ptid)); | |
506fb367 | 2469 | else if (step) |
2963ee1d | 2470 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2471 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2472 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2473 | PIDGET (inferior_ptid)); | |
506fb367 | 2474 | else |
2963ee1d | 2475 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2476 | } |
2477 | else | |
506fb367 DJ |
2478 | { |
2479 | /* Scheduler locking; resume only PTID. */ | |
2480 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2481 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2482 | else if (step) |
2963ee1d | 2483 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2484 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2485 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2486 | else |
2963ee1d | 2487 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2488 | } |
c906108c | 2489 | |
2963ee1d DJ |
2490 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
2491 | make_cleanup (xfree, outbuf); | |
2492 | ||
2493 | putpkt (outbuf); | |
506fb367 DJ |
2494 | |
2495 | do_cleanups (old_cleanup); | |
2496 | ||
2497 | return 1; | |
c906108c | 2498 | } |
43ff13b4 | 2499 | |
506fb367 DJ |
2500 | /* Tell the remote machine to resume. */ |
2501 | ||
2502 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2503 | ||
2504 | static int last_sent_step; | |
2505 | ||
43ff13b4 | 2506 | static void |
506fb367 | 2507 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2508 | { |
d01949b6 AC |
2509 | struct remote_state *rs = get_remote_state (); |
2510 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2511 | int pid = PIDGET (ptid); |
44eaed12 | 2512 | char *p; |
43ff13b4 | 2513 | |
43ff13b4 JM |
2514 | last_sent_signal = siggnal; |
2515 | last_sent_step = step; | |
2516 | ||
2517 | /* A hook for when we need to do something at the last moment before | |
2518 | resumption. */ | |
9a4105ab AC |
2519 | if (deprecated_target_resume_hook) |
2520 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2521 | |
506fb367 DJ |
2522 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2523 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2524 | return; | |
2525 | ||
2526 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2527 | if (pid == -1) | |
2528 | set_thread (0, 0); /* run any thread */ | |
2529 | else | |
2530 | set_thread (pid, 0); /* run this thread */ | |
2531 | ||
43ff13b4 JM |
2532 | if (siggnal != TARGET_SIGNAL_0) |
2533 | { | |
2534 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2535 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2536 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2537 | buf[3] = '\0'; |
2538 | } | |
2539 | else | |
c5aa993b | 2540 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2541 | |
44eaed12 | 2542 | putpkt (buf); |
506fb367 DJ |
2543 | } |
2544 | ||
2545 | /* Same as remote_resume, but with async support. */ | |
2546 | static void | |
2547 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2548 | { | |
2549 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2550 | |
2acceee2 JM |
2551 | /* We are about to start executing the inferior, let's register it |
2552 | with the event loop. NOTE: this is the one place where all the | |
2553 | execution commands end up. We could alternatively do this in each | |
2554 | of the execution commands in infcmd.c.*/ | |
2555 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2556 | into infcmd.c in order to allow inferior function calls to work | |
2557 | NOT asynchronously. */ | |
ed9a39eb | 2558 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2559 | target_async (inferior_event_handler, 0); |
2560 | /* Tell the world that the target is now executing. */ | |
2561 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2562 | this? Instead, should the client of target just assume (for | |
2563 | async targets) that the target is going to start executing? Is | |
2564 | this information already found in the continuation block? */ | |
ed9a39eb | 2565 | if (target_is_async_p ()) |
2acceee2 | 2566 | target_executing = 1; |
43ff13b4 | 2567 | } |
c906108c | 2568 | \f |
43ff13b4 JM |
2569 | |
2570 | /* Set up the signal handler for SIGINT, while the target is | |
2571 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2572 | static void | |
fba45db2 | 2573 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2574 | { |
c5aa993b | 2575 | sigint_remote_token = |
43ff13b4 JM |
2576 | create_async_signal_handler (async_remote_interrupt, NULL); |
2577 | signal (SIGINT, handle_remote_sigint); | |
2578 | } | |
2579 | ||
2580 | /* Signal handler for SIGINT, while the target is executing. */ | |
2581 | static void | |
fba45db2 | 2582 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2583 | { |
2584 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2585 | sigint_remote_twice_token = |
43ff13b4 JM |
2586 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2587 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2588 | } | |
2589 | ||
2590 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2591 | sent once. It will take effect the second time that the user sends | |
2592 | a ^C. */ | |
2593 | static void | |
fba45db2 | 2594 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2595 | { |
2596 | signal (sig, handle_sigint); | |
c5aa993b | 2597 | sigint_remote_twice_token = |
2df3850c | 2598 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2599 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2600 | } | |
2601 | ||
6426a772 | 2602 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2603 | to a ^C. */ |
c5aa993b | 2604 | static void |
fba45db2 | 2605 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2606 | { |
2607 | if (remote_debug) | |
2608 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2609 | ||
2610 | target_stop (); | |
2611 | } | |
2612 | ||
2613 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2614 | up on the target alltogether. */ | |
2df3850c | 2615 | void |
fba45db2 | 2616 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2617 | { |
2df3850c JM |
2618 | if (remote_debug) |
2619 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2620 | /* Do something only if the target was not killed by the previous |
2621 | cntl-C. */ | |
2622 | if (target_executing) | |
2623 | { | |
2624 | interrupt_query (); | |
2625 | signal (SIGINT, handle_remote_sigint); | |
2626 | } | |
43ff13b4 JM |
2627 | } |
2628 | ||
2629 | /* Reinstall the usual SIGINT handlers, after the target has | |
2630 | stopped. */ | |
6426a772 JM |
2631 | static void |
2632 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2633 | { |
2634 | signal (SIGINT, handle_sigint); | |
2635 | if (sigint_remote_twice_token) | |
c2c6d25f | 2636 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2637 | if (sigint_remote_token) |
c2c6d25f | 2638 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2639 | } |
2640 | ||
c906108c SS |
2641 | /* Send ^C to target to halt it. Target will respond, and send us a |
2642 | packet. */ | |
507f3c78 | 2643 | static void (*ofunc) (int); |
c906108c | 2644 | |
7a292a7a SS |
2645 | /* The command line interface's stop routine. This function is installed |
2646 | as a signal handler for SIGINT. The first time a user requests a | |
2647 | stop, we call remote_stop to send a break or ^C. If there is no | |
2648 | response from the target (it didn't stop when the user requested it), | |
2649 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2650 | static void |
fba45db2 | 2651 | remote_interrupt (int signo) |
c906108c | 2652 | { |
7a292a7a SS |
2653 | /* If this doesn't work, try more severe steps. */ |
2654 | signal (signo, remote_interrupt_twice); | |
2655 | ||
2656 | if (remote_debug) | |
0f71a2f6 | 2657 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2658 | |
2659 | target_stop (); | |
2660 | } | |
2661 | ||
2662 | /* The user typed ^C twice. */ | |
2663 | ||
2664 | static void | |
fba45db2 | 2665 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2666 | { |
2667 | signal (signo, ofunc); | |
2668 | interrupt_query (); | |
c906108c SS |
2669 | signal (signo, remote_interrupt); |
2670 | } | |
7a292a7a SS |
2671 | |
2672 | /* This is the generic stop called via the target vector. When a target | |
2673 | interrupt is requested, either by the command line or the GUI, we | |
2674 | will eventually end up here. */ | |
c906108c | 2675 | static void |
fba45db2 | 2676 | remote_stop (void) |
c906108c | 2677 | { |
7a292a7a SS |
2678 | /* Send a break or a ^C, depending on user preference. */ |
2679 | if (remote_debug) | |
0f71a2f6 | 2680 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2681 | |
7a292a7a | 2682 | if (remote_break) |
2cd58942 | 2683 | serial_send_break (remote_desc); |
c906108c | 2684 | else |
2cd58942 | 2685 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2686 | } |
2687 | ||
2688 | /* Ask the user what to do when an interrupt is received. */ | |
2689 | ||
2690 | static void | |
fba45db2 | 2691 | interrupt_query (void) |
c906108c SS |
2692 | { |
2693 | target_terminal_ours (); | |
2694 | ||
2695 | if (query ("Interrupted while waiting for the program.\n\ | |
2696 | Give up (and stop debugging it)? ")) | |
2697 | { | |
2698 | target_mourn_inferior (); | |
b5a2688f | 2699 | throw_exception (RETURN_QUIT); |
c906108c SS |
2700 | } |
2701 | ||
2702 | target_terminal_inferior (); | |
2703 | } | |
2704 | ||
6426a772 JM |
2705 | /* Enable/disable target terminal ownership. Most targets can use |
2706 | terminal groups to control terminal ownership. Remote targets are | |
2707 | different in that explicit transfer of ownership to/from GDB/target | |
2708 | is required. */ | |
2709 | ||
2710 | static void | |
2711 | remote_async_terminal_inferior (void) | |
2712 | { | |
2713 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2714 | sync_execution here. This function should only be called when | |
2715 | GDB is resuming the inferior in the forground. A background | |
2716 | resume (``run&'') should leave GDB in control of the terminal and | |
2717 | consequently should not call this code. */ | |
2718 | if (!sync_execution) | |
2719 | return; | |
2720 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2721 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2722 | to an asynchronous target with a synchronous command calls this | |
2723 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2724 | stops trying to transfer the terminal to the target when it | |
2725 | shouldn't this guard can go away. */ | |
2726 | if (!remote_async_terminal_ours_p) | |
2727 | return; | |
2728 | delete_file_handler (input_fd); | |
2729 | remote_async_terminal_ours_p = 0; | |
2730 | initialize_sigint_signal_handler (); | |
2731 | /* NOTE: At this point we could also register our selves as the | |
2732 | recipient of all input. Any characters typed could then be | |
2733 | passed on down to the target. */ | |
2734 | } | |
2735 | ||
2736 | static void | |
2737 | remote_async_terminal_ours (void) | |
2738 | { | |
2739 | /* See FIXME in remote_async_terminal_inferior. */ | |
2740 | if (!sync_execution) | |
2741 | return; | |
2742 | /* See FIXME in remote_async_terminal_inferior. */ | |
2743 | if (remote_async_terminal_ours_p) | |
2744 | return; | |
2745 | cleanup_sigint_signal_handler (NULL); | |
2746 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2747 | remote_async_terminal_ours_p = 1; | |
2748 | } | |
2749 | ||
c906108c SS |
2750 | /* If nonzero, ignore the next kill. */ |
2751 | ||
2752 | int kill_kludge; | |
2753 | ||
2754 | void | |
917317f4 | 2755 | remote_console_output (char *msg) |
c906108c SS |
2756 | { |
2757 | char *p; | |
2758 | ||
c5aa993b | 2759 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2760 | { |
2761 | char tb[2]; | |
2762 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2763 | tb[0] = c; | |
2764 | tb[1] = 0; | |
43ff13b4 | 2765 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2766 | } |
917317f4 | 2767 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2768 | } |
2769 | ||
0f71a2f6 JM |
2770 | /* Wait until the remote machine stops, then return, |
2771 | storing status in STATUS just as `wait' would. | |
802188a7 | 2772 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2773 | remote OS, is the thread-id. */ |
c906108c | 2774 | |
39f77062 KB |
2775 | static ptid_t |
2776 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2777 | { |
d01949b6 AC |
2778 | struct remote_state *rs = get_remote_state (); |
2779 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2780 | ULONGEST thread_num = -1; |
3c3bea1c | 2781 | ULONGEST addr; |
c906108c SS |
2782 | |
2783 | status->kind = TARGET_WAITKIND_EXITED; | |
2784 | status->value.integer = 0; | |
2785 | ||
2786 | while (1) | |
2787 | { | |
2788 | unsigned char *p; | |
2789 | ||
c906108c | 2790 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2791 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2792 | signal (SIGINT, ofunc); |
2793 | ||
2794 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2795 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2796 | if (deprecated_target_wait_loop_hook) |
2797 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2798 | |
3c3bea1c GS |
2799 | remote_stopped_by_watchpoint_p = 0; |
2800 | ||
c906108c SS |
2801 | switch (buf[0]) |
2802 | { | |
2803 | case 'E': /* Error of some sort */ | |
2804 | warning ("Remote failure reply: %s", buf); | |
2805 | continue; | |
449092f6 CV |
2806 | case 'F': /* File-I/O request */ |
2807 | remote_fileio_request (buf); | |
2808 | continue; | |
c906108c SS |
2809 | case 'T': /* Status with PC, SP, FP, ... */ |
2810 | { | |
2811 | int i; | |
d9d9c31f | 2812 | char regs[MAX_REGISTER_SIZE]; |
c906108c SS |
2813 | |
2814 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2815 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2816 | ss = signal number |
2817 | n... = register number | |
2818 | r... = register contents | |
2819 | */ | |
c906108c SS |
2820 | p = &buf[3]; /* after Txx */ |
2821 | ||
2822 | while (*p) | |
2823 | { | |
2824 | unsigned char *p1; | |
2825 | char *p_temp; | |
97345198 | 2826 | int fieldsize; |
3c3bea1c GS |
2827 | LONGEST pnum = 0; |
2828 | ||
2829 | /* If the packet contains a register number save it in pnum | |
802188a7 | 2830 | and set p1 to point to the character following it. |
3c3bea1c | 2831 | Otherwise p1 points to p. */ |
c906108c | 2832 | |
3c3bea1c GS |
2833 | /* If this packet is an awatch packet, don't parse the 'a' |
2834 | as a register number. */ | |
2835 | ||
2836 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2837 | { | |
2838 | /* Read the ``P'' register number. */ | |
2839 | pnum = strtol (p, &p_temp, 16); | |
2840 | p1 = (unsigned char *) p_temp; | |
2841 | } | |
802188a7 | 2842 | else |
3c3bea1c | 2843 | p1 = p; |
c906108c | 2844 | |
c5aa993b | 2845 | if (p1 == p) /* No register number present here */ |
c906108c | 2846 | { |
3c3bea1c | 2847 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c SS |
2848 | if (p1 == NULL) |
2849 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2850 | Packet: '%s'\n", | |
2851 | p, buf); | |
3c3bea1c | 2852 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2853 | { |
2854 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2855 | record_currthread (thread_num); | |
2856 | p = (unsigned char *) p_temp; | |
2857 | } | |
3c3bea1c GS |
2858 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2859 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2860 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2861 | { | |
2862 | remote_stopped_by_watchpoint_p = 1; | |
2863 | p = unpack_varlen_hex (++p1, &addr); | |
2864 | remote_watch_data_address = (CORE_ADDR)addr; | |
2865 | } | |
2866 | else | |
2867 | { | |
2868 | /* Silently skip unknown optional info. */ | |
2869 | p_temp = strchr (p1 + 1, ';'); | |
2870 | if (p_temp) | |
2871 | p = (unsigned char *) p_temp; | |
2872 | } | |
c906108c SS |
2873 | } |
2874 | else | |
2875 | { | |
ad10f812 | 2876 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2877 | p = p1; |
2878 | ||
2879 | if (*p++ != ':') | |
3fcb8548 AC |
2880 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
2881 | p, buf); | |
c906108c | 2882 | |
ad10f812 | 2883 | if (reg == NULL) |
3fcb8548 AC |
2884 | error ("Remote sent bad register number %s: %s\nPacket: '%s'\n", |
2885 | phex_nz (pnum, 0), p, buf); | |
c906108c | 2886 | |
12c266ea | 2887 | fieldsize = hex2bin (p, regs, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)); |
97345198 | 2888 | p += 2 * fieldsize; |
12c266ea | 2889 | if (fieldsize < DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 2890 | warning ("Remote reply is too short: %s", buf); |
23a6d369 | 2891 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
c906108c SS |
2892 | } |
2893 | ||
2894 | if (*p++ != ';') | |
3fcb8548 | 2895 | error ("Remote register badly formatted: %s\nhere: %s", buf, p); |
c906108c SS |
2896 | } |
2897 | } | |
2898 | /* fall through */ | |
2899 | case 'S': /* Old style status, just signal only */ | |
2900 | status->kind = TARGET_WAITKIND_STOPPED; | |
2901 | status->value.sig = (enum target_signal) | |
2902 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2903 | ||
0f71a2f6 JM |
2904 | if (buf[3] == 'p') |
2905 | { | |
0f71a2f6 JM |
2906 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2907 | record_currthread (thread_num); | |
2908 | } | |
c906108c SS |
2909 | goto got_status; |
2910 | case 'W': /* Target exited */ | |
2911 | { | |
2912 | /* The remote process exited. */ | |
2913 | status->kind = TARGET_WAITKIND_EXITED; | |
2914 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2915 | goto got_status; | |
2916 | } | |
2917 | case 'X': | |
2918 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2919 | status->value.sig = (enum target_signal) | |
2920 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2921 | kill_kludge = 1; | |
2922 | ||
2923 | goto got_status; | |
2924 | case 'O': /* Console output */ | |
2925 | remote_console_output (buf + 1); | |
2926 | continue; | |
2927 | case '\0': | |
2928 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2929 | { | |
2930 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2931 | the remote system doesn't support it. */ |
c906108c SS |
2932 | target_terminal_ours_for_output (); |
2933 | printf_filtered | |
2934 | ("Can't send signals to this remote system. %s not sent.\n", | |
2935 | target_signal_to_name (last_sent_signal)); | |
2936 | last_sent_signal = TARGET_SIGNAL_0; | |
2937 | target_terminal_inferior (); | |
2938 | ||
2939 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2940 | putpkt ((char *) buf); | |
2941 | continue; | |
2942 | } | |
2943 | /* else fallthrough */ | |
2944 | default: | |
2945 | warning ("Invalid remote reply: %s", buf); | |
2946 | continue; | |
2947 | } | |
2948 | } | |
c5aa993b | 2949 | got_status: |
c906108c SS |
2950 | if (thread_num != -1) |
2951 | { | |
39f77062 | 2952 | return pid_to_ptid (thread_num); |
c906108c | 2953 | } |
39f77062 | 2954 | return inferior_ptid; |
c906108c SS |
2955 | } |
2956 | ||
43ff13b4 | 2957 | /* Async version of remote_wait. */ |
39f77062 KB |
2958 | static ptid_t |
2959 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 2960 | { |
d01949b6 AC |
2961 | struct remote_state *rs = get_remote_state (); |
2962 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2963 | ULONGEST thread_num = -1; |
3c3bea1c | 2964 | ULONGEST addr; |
43ff13b4 JM |
2965 | |
2966 | status->kind = TARGET_WAITKIND_EXITED; | |
2967 | status->value.integer = 0; | |
2968 | ||
3c3bea1c GS |
2969 | remote_stopped_by_watchpoint_p = 0; |
2970 | ||
43ff13b4 JM |
2971 | while (1) |
2972 | { | |
2973 | unsigned char *p; | |
c5aa993b | 2974 | |
ed9a39eb | 2975 | if (!target_is_async_p ()) |
43ff13b4 | 2976 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2977 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2978 | _never_ wait for ever -> test on target_is_async_p(). | |
2979 | However, before we do that we need to ensure that the caller | |
2980 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 2981 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 2982 | if (!target_is_async_p ()) |
43ff13b4 JM |
2983 | signal (SIGINT, ofunc); |
2984 | ||
2985 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2986 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2987 | if (deprecated_target_wait_loop_hook) |
2988 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
2989 | |
2990 | switch (buf[0]) | |
2991 | { | |
2992 | case 'E': /* Error of some sort */ | |
2993 | warning ("Remote failure reply: %s", buf); | |
2994 | continue; | |
449092f6 CV |
2995 | case 'F': /* File-I/O request */ |
2996 | remote_fileio_request (buf); | |
2997 | continue; | |
43ff13b4 JM |
2998 | case 'T': /* Status with PC, SP, FP, ... */ |
2999 | { | |
3000 | int i; | |
d9d9c31f | 3001 | char regs[MAX_REGISTER_SIZE]; |
43ff13b4 JM |
3002 | |
3003 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3004 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3005 | ss = signal number |
3006 | n... = register number | |
3007 | r... = register contents | |
3008 | */ | |
43ff13b4 JM |
3009 | p = &buf[3]; /* after Txx */ |
3010 | ||
3011 | while (*p) | |
3012 | { | |
3013 | unsigned char *p1; | |
3014 | char *p_temp; | |
6c3f2dbf | 3015 | int fieldsize; |
3c3bea1c | 3016 | long pnum = 0; |
43ff13b4 | 3017 | |
3c3bea1c | 3018 | /* If the packet contains a register number, save it in pnum |
802188a7 | 3019 | and set p1 to point to the character following it. |
3c3bea1c GS |
3020 | Otherwise p1 points to p. */ |
3021 | ||
3022 | /* If this packet is an awatch packet, don't parse the 'a' | |
3023 | as a register number. */ | |
802188a7 | 3024 | |
3c3bea1c GS |
3025 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3026 | { | |
3027 | /* Read the register number. */ | |
3028 | pnum = strtol (p, &p_temp, 16); | |
3029 | p1 = (unsigned char *) p_temp; | |
3030 | } | |
802188a7 | 3031 | else |
3c3bea1c | 3032 | p1 = p; |
43ff13b4 | 3033 | |
c5aa993b | 3034 | if (p1 == p) /* No register number present here */ |
43ff13b4 | 3035 | { |
3c3bea1c | 3036 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 | 3037 | if (p1 == NULL) |
3fcb8548 AC |
3038 | error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n", |
3039 | p, buf); | |
3c3bea1c | 3040 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3041 | { |
3042 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3043 | record_currthread (thread_num); | |
3044 | p = (unsigned char *) p_temp; | |
3045 | } | |
3c3bea1c GS |
3046 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3047 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3048 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3049 | { | |
3050 | remote_stopped_by_watchpoint_p = 1; | |
3051 | p = unpack_varlen_hex (++p1, &addr); | |
3052 | remote_watch_data_address = (CORE_ADDR)addr; | |
3053 | } | |
3054 | else | |
3055 | { | |
3056 | /* Silently skip unknown optional info. */ | |
3057 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3058 | if (p_temp) | |
3059 | p = p_temp; | |
3060 | } | |
43ff13b4 | 3061 | } |
802188a7 | 3062 | |
43ff13b4 JM |
3063 | else |
3064 | { | |
ad10f812 | 3065 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3066 | p = p1; |
43ff13b4 | 3067 | if (*p++ != ':') |
3fcb8548 AC |
3068 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
3069 | p, buf); | |
43ff13b4 | 3070 | |
ad10f812 | 3071 | if (reg == NULL) |
3fcb8548 AC |
3072 | error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n", |
3073 | pnum, p, buf); | |
43ff13b4 | 3074 | |
12c266ea | 3075 | fieldsize = hex2bin (p, regs, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)); |
6c3f2dbf | 3076 | p += 2 * fieldsize; |
12c266ea | 3077 | if (fieldsize < DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3078 | warning ("Remote reply is too short: %s", buf); |
23a6d369 | 3079 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3080 | } |
3081 | ||
3082 | if (*p++ != ';') | |
0a2cfde4 AC |
3083 | error ("Remote register badly formatted: %s\nhere: %s", |
3084 | buf, p); | |
43ff13b4 JM |
3085 | } |
3086 | } | |
3087 | /* fall through */ | |
3088 | case 'S': /* Old style status, just signal only */ | |
3089 | status->kind = TARGET_WAITKIND_STOPPED; | |
3090 | status->value.sig = (enum target_signal) | |
3091 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3092 | ||
3093 | if (buf[3] == 'p') | |
3094 | { | |
43ff13b4 JM |
3095 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3096 | record_currthread (thread_num); | |
3097 | } | |
43ff13b4 | 3098 | goto got_status; |
43ff13b4 JM |
3099 | case 'W': /* Target exited */ |
3100 | { | |
3101 | /* The remote process exited. */ | |
3102 | status->kind = TARGET_WAITKIND_EXITED; | |
3103 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3104 | goto got_status; | |
3105 | } | |
3106 | case 'X': | |
3107 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3108 | status->value.sig = (enum target_signal) | |
3109 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3110 | kill_kludge = 1; | |
3111 | ||
3112 | goto got_status; | |
3113 | case 'O': /* Console output */ | |
3114 | remote_console_output (buf + 1); | |
c4093a6a JM |
3115 | /* Return immediately to the event loop. The event loop will |
3116 | still be waiting on the inferior afterwards. */ | |
3117 | status->kind = TARGET_WAITKIND_IGNORE; | |
3118 | goto got_status; | |
43ff13b4 JM |
3119 | case '\0': |
3120 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3121 | { | |
3122 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3123 | the remote system doesn't support it. */ |
43ff13b4 JM |
3124 | target_terminal_ours_for_output (); |
3125 | printf_filtered | |
3126 | ("Can't send signals to this remote system. %s not sent.\n", | |
3127 | target_signal_to_name (last_sent_signal)); | |
3128 | last_sent_signal = TARGET_SIGNAL_0; | |
3129 | target_terminal_inferior (); | |
3130 | ||
3131 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3132 | putpkt ((char *) buf); | |
3133 | continue; | |
3134 | } | |
3135 | /* else fallthrough */ | |
3136 | default: | |
3137 | warning ("Invalid remote reply: %s", buf); | |
3138 | continue; | |
3139 | } | |
3140 | } | |
c5aa993b | 3141 | got_status: |
43ff13b4 JM |
3142 | if (thread_num != -1) |
3143 | { | |
39f77062 | 3144 | return pid_to_ptid (thread_num); |
43ff13b4 | 3145 | } |
39f77062 | 3146 | return inferior_ptid; |
43ff13b4 JM |
3147 | } |
3148 | ||
c906108c SS |
3149 | /* Number of bytes of registers this stub implements. */ |
3150 | ||
3151 | static int register_bytes_found; | |
3152 | ||
3153 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3154 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3155 | |
c906108c | 3156 | static void |
ad10f812 | 3157 | remote_fetch_registers (int regnum) |
c906108c | 3158 | { |
d01949b6 AC |
3159 | struct remote_state *rs = get_remote_state (); |
3160 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3161 | int i; |
3162 | char *p; | |
ad10f812 | 3163 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3164 | |
39f77062 | 3165 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3166 | |
b323314b AC |
3167 | if (regnum >= 0) |
3168 | { | |
3169 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3170 | gdb_assert (reg != NULL); | |
3171 | if (!reg->in_g_packet) | |
3172 | internal_error (__FILE__, __LINE__, | |
3173 | "Attempt to fetch a non G-packet register when this " | |
3174 | "remote.c does not support the p-packet."); | |
3175 | } | |
3176 | ||
c906108c | 3177 | sprintf (buf, "g"); |
d01949b6 | 3178 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3179 | |
11cf8741 JM |
3180 | /* Save the size of the packet sent to us by the target. Its used |
3181 | as a heuristic when determining the max size of packets that the | |
3182 | target can safely receive. */ | |
d01949b6 AC |
3183 | if ((rs->actual_register_packet_size) == 0) |
3184 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3185 | |
3186 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3187 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3188 | |
3189 | /* We can get out of synch in various cases. If the first character | |
3190 | in the buffer is not a hex character, assume that has happened | |
3191 | and try to fetch another packet to read. */ | |
3192 | while ((buf[0] < '0' || buf[0] > '9') | |
3193 | && (buf[0] < 'a' || buf[0] > 'f') | |
3194 | && buf[0] != 'x') /* New: unavailable register value */ | |
3195 | { | |
3196 | if (remote_debug) | |
0f71a2f6 JM |
3197 | fprintf_unfiltered (gdb_stdlog, |
3198 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3199 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3200 | } |
3201 | ||
3202 | /* Reply describes registers byte by byte, each byte encoded as two | |
3203 | hex characters. Suck them all up, then supply them to the | |
3204 | register cacheing/storage mechanism. */ | |
3205 | ||
3206 | p = buf; | |
ad10f812 | 3207 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3208 | { |
3209 | if (p[0] == 0) | |
3210 | break; | |
3211 | if (p[1] == 0) | |
3212 | { | |
3213 | warning ("Remote reply is of odd length: %s", buf); | |
3214 | /* Don't change register_bytes_found in this case, and don't | |
3215 | print a second warning. */ | |
3216 | goto supply_them; | |
3217 | } | |
3218 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3219 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3220 | else |
3221 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3222 | p += 2; | |
3223 | } | |
3224 | ||
3225 | if (i != register_bytes_found) | |
3226 | { | |
3227 | register_bytes_found = i; | |
2649061d AC |
3228 | if (REGISTER_BYTES_OK_P () |
3229 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3230 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3231 | } |
c5aa993b | 3232 | |
b323314b | 3233 | supply_them: |
ad10f812 | 3234 | { |
b323314b AC |
3235 | int i; |
3236 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3237 | { |
b323314b AC |
3238 | struct packet_reg *r = &rs->regs[i]; |
3239 | if (r->in_g_packet) | |
3240 | { | |
8ccc1287 AC |
3241 | if (r->offset * 2 >= strlen (buf)) |
3242 | /* A short packet that didn't include the register's | |
3243 | value, this implies that the register is zero (and | |
3244 | not that the register is unavailable). Supply that | |
3245 | zero value. */ | |
3246 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3247 | else if (buf[r->offset * 2] == 'x') | |
3248 | { | |
3249 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3250 | /* The register isn't available, mark it as such (at | |
3251 | the same time setting the value to zero). */ | |
3252 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3253 | set_register_cached (i, -1); | |
3254 | } | |
3255 | else | |
3256 | regcache_raw_supply (current_regcache, r->regnum, | |
3257 | regs + r->offset); | |
b323314b | 3258 | } |
ad10f812 AC |
3259 | } |
3260 | } | |
c906108c SS |
3261 | } |
3262 | ||
3263 | /* Prepare to store registers. Since we may send them all (using a | |
3264 | 'G' request), we have to read out the ones we don't want to change | |
3265 | first. */ | |
3266 | ||
c5aa993b | 3267 | static void |
fba45db2 | 3268 | remote_prepare_to_store (void) |
c906108c | 3269 | { |
cf0e1e0d DJ |
3270 | struct remote_state *rs = get_remote_state (); |
3271 | int i; | |
3272 | char buf[MAX_REGISTER_SIZE]; | |
3273 | ||
c906108c | 3274 | /* Make sure the entire registers array is valid. */ |
5a2468f5 JM |
3275 | switch (remote_protocol_P.support) |
3276 | { | |
3277 | case PACKET_DISABLE: | |
3278 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3279 | /* Make sure all the necessary registers are cached. */ |
3280 | for (i = 0; i < NUM_REGS; i++) | |
3281 | if (rs->regs[i].in_g_packet) | |
3282 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3283 | break; |
3284 | case PACKET_ENABLE: | |
3285 | break; | |
3286 | } | |
3287 | } | |
3288 | ||
ad10f812 | 3289 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
5a2468f5 JM |
3290 | packet was not recognized. */ |
3291 | ||
3292 | static int | |
ad10f812 | 3293 | store_register_using_P (int regnum) |
5a2468f5 | 3294 | { |
d01949b6 | 3295 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3296 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3297 | /* Try storing a single register. */ |
d01949b6 | 3298 | char *buf = alloca (rs->remote_packet_size); |
d9d9c31f | 3299 | char regp[MAX_REGISTER_SIZE]; |
5a2468f5 JM |
3300 | char *p; |
3301 | int i; | |
3302 | ||
ad10f812 | 3303 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3304 | p = buf + strlen (buf); |
822c9732 | 3305 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
12c266ea | 3306 | bin2hex (regp, p, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)); |
ad10f812 | 3307 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3308 | |
3309 | return buf[0] != '\0'; | |
c906108c SS |
3310 | } |
3311 | ||
5a2468f5 | 3312 | |
ad10f812 | 3313 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents |
7302a204 | 3314 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3315 | |
3316 | static void | |
ad10f812 | 3317 | remote_store_registers (int regnum) |
c906108c | 3318 | { |
d01949b6 | 3319 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3320 | char *buf; |
3321 | char *regs; | |
c906108c SS |
3322 | int i; |
3323 | char *p; | |
3324 | ||
39f77062 | 3325 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3326 | |
ad10f812 | 3327 | if (regnum >= 0) |
c906108c | 3328 | { |
5a2468f5 | 3329 | switch (remote_protocol_P.support) |
c906108c | 3330 | { |
5a2468f5 JM |
3331 | case PACKET_DISABLE: |
3332 | break; | |
3333 | case PACKET_ENABLE: | |
ad10f812 | 3334 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3335 | return; |
3336 | else | |
3337 | error ("Protocol error: P packet not recognized by stub"); | |
3338 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3339 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3340 | { |
3341 | /* The stub recognized the 'P' packet. Remember this. */ | |
3342 | remote_protocol_P.support = PACKET_ENABLE; | |
3343 | return; | |
3344 | } | |
3345 | else | |
3346 | { | |
3347 | /* The stub does not support the 'P' packet. Use 'G' | |
3348 | instead, and don't try using 'P' in the future (it | |
3349 | will just waste our time). */ | |
3350 | remote_protocol_P.support = PACKET_DISABLE; | |
3351 | break; | |
3352 | } | |
c906108c | 3353 | } |
c906108c SS |
3354 | } |
3355 | ||
193cb69f AC |
3356 | /* Extract all the registers in the regcache copying them into a |
3357 | local buffer. */ | |
3358 | { | |
b323314b | 3359 | int i; |
ad10f812 AC |
3360 | regs = alloca (rs->sizeof_g_packet); |
3361 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3362 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3363 | { |
b323314b AC |
3364 | struct packet_reg *r = &rs->regs[i]; |
3365 | if (r->in_g_packet) | |
822c9732 | 3366 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3367 | } |
3368 | } | |
c906108c SS |
3369 | |
3370 | /* Command describes registers byte by byte, | |
3371 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3372 | buf = alloca (rs->remote_packet_size); |
3373 | p = buf; | |
3374 | *p++ = 'G'; | |
c906108c | 3375 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3376 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3377 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3378 | } |
c906108c SS |
3379 | \f |
3380 | ||
3381 | /* Return the number of hex digits in num. */ | |
3382 | ||
3383 | static int | |
fba45db2 | 3384 | hexnumlen (ULONGEST num) |
c906108c SS |
3385 | { |
3386 | int i; | |
3387 | ||
3388 | for (i = 0; num != 0; i++) | |
3389 | num >>= 4; | |
3390 | ||
3391 | return max (i, 1); | |
3392 | } | |
3393 | ||
2df3850c | 3394 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3395 | |
3396 | static int | |
fba45db2 | 3397 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3398 | { |
c906108c | 3399 | int len = hexnumlen (num); |
2df3850c JM |
3400 | return hexnumnstr (buf, num, len); |
3401 | } | |
3402 | ||
c906108c | 3403 | |
2df3850c | 3404 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3405 | |
2df3850c | 3406 | static int |
fba45db2 | 3407 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3408 | { |
3409 | int i; | |
3410 | ||
3411 | buf[width] = '\0'; | |
3412 | ||
3413 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3414 | { |
c5aa993b | 3415 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3416 | num >>= 4; |
3417 | } | |
3418 | ||
2df3850c | 3419 | return width; |
c906108c SS |
3420 | } |
3421 | ||
3422 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3423 | ||
3424 | static CORE_ADDR | |
fba45db2 | 3425 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3426 | { |
3427 | if (remote_address_size > 0 | |
3428 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3429 | { | |
3430 | /* Only create a mask when that mask can safely be constructed | |
3431 | in a ULONGEST variable. */ | |
3432 | ULONGEST mask = 1; | |
3433 | mask = (mask << remote_address_size) - 1; | |
3434 | addr &= mask; | |
3435 | } | |
3436 | return addr; | |
3437 | } | |
3438 | ||
3439 | /* Determine whether the remote target supports binary downloading. | |
3440 | This is accomplished by sending a no-op memory write of zero length | |
3441 | to the target at the specified address. It does not suffice to send | |
3442 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3443 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3444 | ||
96baa820 JM |
3445 | NOTE: This can still lose if the serial line is not eight-bit |
3446 | clean. In cases like this, the user should clear "remote | |
3447 | X-packet". */ | |
3448 | ||
c906108c | 3449 | static void |
fba45db2 | 3450 | check_binary_download (CORE_ADDR addr) |
c906108c | 3451 | { |
d01949b6 | 3452 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3453 | switch (remote_protocol_binary_download.support) |
c906108c | 3454 | { |
96baa820 JM |
3455 | case PACKET_DISABLE: |
3456 | break; | |
3457 | case PACKET_ENABLE: | |
3458 | break; | |
3459 | case PACKET_SUPPORT_UNKNOWN: | |
3460 | { | |
d01949b6 | 3461 | char *buf = alloca (rs->remote_packet_size); |
96baa820 | 3462 | char *p; |
802188a7 | 3463 | |
96baa820 JM |
3464 | p = buf; |
3465 | *p++ = 'X'; | |
3466 | p += hexnumstr (p, (ULONGEST) addr); | |
3467 | *p++ = ','; | |
3468 | p += hexnumstr (p, (ULONGEST) 0); | |
3469 | *p++ = ':'; | |
3470 | *p = '\0'; | |
802188a7 | 3471 | |
96baa820 | 3472 | putpkt_binary (buf, (int) (p - buf)); |
d01949b6 | 3473 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3474 | |
96baa820 JM |
3475 | if (buf[0] == '\0') |
3476 | { | |
3477 | if (remote_debug) | |
3478 | fprintf_unfiltered (gdb_stdlog, | |
3479 | "binary downloading NOT suppported by target\n"); | |
3480 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3481 | } | |
3482 | else | |
3483 | { | |
3484 | if (remote_debug) | |
3485 | fprintf_unfiltered (gdb_stdlog, | |
3486 | "binary downloading suppported by target\n"); | |
3487 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3488 | } | |
3489 | break; | |
3490 | } | |
c906108c SS |
3491 | } |
3492 | } | |
3493 | ||
3494 | /* Write memory data directly to the remote machine. | |
3495 | This does not inform the data cache; the data cache uses this. | |
3496 | MEMADDR is the address in the remote memory space. | |
3497 | MYADDR is the address of the buffer in our space. | |
3498 | LEN is the number of bytes. | |
3499 | ||
917317f4 JM |
3500 | Returns number of bytes transferred, or 0 (setting errno) for |
3501 | error. Only transfer a single packet. */ | |
c906108c | 3502 | |
449092f6 | 3503 | int |
917317f4 | 3504 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3505 | { |
917317f4 | 3506 | unsigned char *buf; |
917317f4 JM |
3507 | unsigned char *p; |
3508 | unsigned char *plen; | |
c2d11a7d | 3509 | long sizeof_buf; |
917317f4 JM |
3510 | int plenlen; |
3511 | int todo; | |
3512 | int nr_bytes; | |
a257b5bb AC |
3513 | int payload_size; |
3514 | unsigned char *payload_start; | |
c906108c | 3515 | |
a257b5bb | 3516 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3517 | check_binary_download (memaddr); |
3518 | ||
a257b5bb AC |
3519 | /* Compute the size, and then allocate space for the largest |
3520 | possible packet. Include space for an extra trailing NUL. */ | |
3521 | sizeof_buf = get_memory_write_packet_size () + 1; | |
c2d11a7d | 3522 | buf = alloca (sizeof_buf); |
c906108c | 3523 | |
a257b5bb AC |
3524 | /* Compute the size of the actual payload by subtracting out the |
3525 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ | |
3526 | payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN") | |
3527 | + hexnumlen (memaddr) | |
3528 | + hexnumlen (len))); | |
c906108c | 3529 | |
a257b5bb | 3530 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3531 | |
a257b5bb | 3532 | /* Append "[XM]". Compute a best guess of the number of bytes |
917317f4 | 3533 | actually transfered. */ |
a257b5bb | 3534 | p = buf; |
917317f4 | 3535 | switch (remote_protocol_binary_download.support) |
c906108c | 3536 | { |
917317f4 JM |
3537 | case PACKET_ENABLE: |
3538 | *p++ = 'X'; | |
3539 | /* Best guess at number of bytes that will fit. */ | |
a257b5bb | 3540 | todo = min (len, payload_size); |
917317f4 JM |
3541 | break; |
3542 | case PACKET_DISABLE: | |
3543 | *p++ = 'M'; | |
3544 | /* num bytes that will fit */ | |
a257b5bb | 3545 | todo = min (len, payload_size / 2); |
917317f4 JM |
3546 | break; |
3547 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3548 | internal_error (__FILE__, __LINE__, |
3549 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3550 | default: |
8e65ff28 | 3551 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 | 3552 | } |
802188a7 | 3553 | |
a257b5bb | 3554 | /* Append "<memaddr>". */ |
917317f4 JM |
3555 | memaddr = remote_address_masked (memaddr); |
3556 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3557 | |
3558 | /* Append ",". */ | |
917317f4 | 3559 | *p++ = ','; |
802188a7 | 3560 | |
a257b5bb AC |
3561 | /* Append <len>. Retain the location/size of <len>. It may need to |
3562 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3563 | plen = p; |
3564 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3565 | p += plenlen; | |
a257b5bb AC |
3566 | |
3567 | /* Append ":". */ | |
917317f4 JM |
3568 | *p++ = ':'; |
3569 | *p = '\0'; | |
802188a7 | 3570 | |
a257b5bb AC |
3571 | /* Append the packet body. */ |
3572 | payload_start = p; | |
917317f4 JM |
3573 | switch (remote_protocol_binary_download.support) |
3574 | { | |
3575 | case PACKET_ENABLE: | |
3576 | /* Binary mode. Send target system values byte by byte, in | |
3577 | increasing byte addresses. Only escape certain critical | |
3578 | characters. */ | |
3579 | for (nr_bytes = 0; | |
a257b5bb | 3580 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3581 | nr_bytes++) |
c906108c | 3582 | { |
917317f4 JM |
3583 | switch (myaddr[nr_bytes] & 0xff) |
3584 | { | |
3585 | case '$': | |
3586 | case '#': | |
3587 | case 0x7d: | |
3588 | /* These must be escaped */ | |
3589 | *p++ = 0x7d; | |
3590 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3591 | break; | |
3592 | default: | |
3593 | *p++ = myaddr[nr_bytes] & 0xff; | |
3594 | break; | |
3595 | } | |
c906108c | 3596 | } |
917317f4 | 3597 | if (nr_bytes < todo) |
c906108c | 3598 | { |
802188a7 | 3599 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3600 | and we have actually sent fewer bytes than planned. |
3601 | Fix-up the length field of the packet. Use the same | |
3602 | number of characters as before. */ | |
917317f4 JM |
3603 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3604 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3605 | } |
917317f4 JM |
3606 | break; |
3607 | case PACKET_DISABLE: | |
3608 | /* Normal mode: Send target system values byte by byte, in | |
3609 | increasing byte addresses. Each byte is encoded as a two hex | |
3610 | value. */ | |
2644f393 | 3611 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3612 | p += 2 * nr_bytes; |
917317f4 JM |
3613 | break; |
3614 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3615 | internal_error (__FILE__, __LINE__, |
3616 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3617 | default: |
8e65ff28 | 3618 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3619 | } |
802188a7 | 3620 | |
917317f4 | 3621 | putpkt_binary (buf, (int) (p - buf)); |
c2d11a7d | 3622 | getpkt (buf, sizeof_buf, 0); |
802188a7 | 3623 | |
917317f4 JM |
3624 | if (buf[0] == 'E') |
3625 | { | |
3626 | /* There is no correspondance between what the remote protocol | |
3627 | uses for errors and errno codes. We would like a cleaner way | |
3628 | of representing errors (big enough to include errno codes, | |
3629 | bfd_error codes, and others). But for now just return EIO. */ | |
3630 | errno = EIO; | |
3631 | return 0; | |
3632 | } | |
802188a7 | 3633 | |
917317f4 JM |
3634 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer |
3635 | bytes than we'd planned. */ | |
3636 | return nr_bytes; | |
c906108c SS |
3637 | } |
3638 | ||
3639 | /* Read memory data directly from the remote machine. | |
3640 | This does not use the data cache; the data cache uses this. | |
3641 | MEMADDR is the address in the remote memory space. | |
3642 | MYADDR is the address of the buffer in our space. | |
3643 | LEN is the number of bytes. | |
3644 | ||
3645 | Returns number of bytes transferred, or 0 for error. */ | |
3646 | ||
917317f4 JM |
3647 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3648 | remote targets) shouldn't attempt to read the entire buffer. | |
3649 | Instead it should read a single packet worth of data and then | |
3650 | return the byte size of that packet to the caller. The caller (its | |
3651 | caller and its callers caller ;-) already contains code for | |
3652 | handling partial reads. */ | |
3653 | ||
449092f6 | 3654 | int |
fba45db2 | 3655 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3656 | { |
11cf8741 | 3657 | char *buf; |
c906108c | 3658 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3659 | long sizeof_buf; |
c906108c SS |
3660 | int origlen; |
3661 | ||
11cf8741 JM |
3662 | /* Create a buffer big enough for this packet. */ |
3663 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3664 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3665 | buf = alloca (sizeof_buf); | |
c906108c SS |
3666 | |
3667 | origlen = len; | |
3668 | while (len > 0) | |
3669 | { | |
c906108c SS |
3670 | char *p; |
3671 | int todo; | |
3672 | int i; | |
3673 | ||
c5aa993b | 3674 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3675 | |
3676 | /* construct "m"<memaddr>","<len>" */ | |
3677 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3678 | memaddr = remote_address_masked (memaddr); | |
3679 | p = buf; | |
3680 | *p++ = 'm'; | |
3681 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3682 | *p++ = ','; | |
3683 | p += hexnumstr (p, (ULONGEST) todo); | |
3684 | *p = '\0'; | |
3685 | ||
3686 | putpkt (buf); | |
c2d11a7d | 3687 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3688 | |
66504d44 MS |
3689 | if (buf[0] == 'E' |
3690 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3691 | && buf[3] == '\0') | |
c906108c SS |
3692 | { |
3693 | /* There is no correspondance between what the remote protocol uses | |
3694 | for errors and errno codes. We would like a cleaner way of | |
3695 | representing errors (big enough to include errno codes, bfd_error | |
3696 | codes, and others). But for now just return EIO. */ | |
3697 | errno = EIO; | |
3698 | return 0; | |
3699 | } | |
3700 | ||
c5aa993b JM |
3701 | /* Reply describes memory byte by byte, |
3702 | each byte encoded as two hex characters. */ | |
c906108c SS |
3703 | |
3704 | p = buf; | |
30559e10 | 3705 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3706 | { |
30559e10 MS |
3707 | /* Reply is short. This means that we were able to read |
3708 | only part of what we wanted to. */ | |
3709 | return i + (origlen - len); | |
c906108c SS |
3710 | } |
3711 | myaddr += todo; | |
3712 | memaddr += todo; | |
3713 | len -= todo; | |
3714 | } | |
3715 | return origlen; | |
3716 | } | |
3717 | \f | |
3718 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3719 | transferring to or from debugger address BUFFER. Write to inferior if |
3720 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3721 | for error. TARGET is unused. */ |
392a587b | 3722 | |
c906108c | 3723 | static int |
c338868a | 3724 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 3725 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3726 | struct target_ops *target) |
c906108c | 3727 | { |
392a587b JM |
3728 | CORE_ADDR targ_addr; |
3729 | int targ_len; | |
4930751a C |
3730 | int res; |
3731 | ||
f6684c31 AC |
3732 | /* Should this be the selected frame? */ |
3733 | gdbarch_remote_translate_xfer_address (current_gdbarch, current_regcache, | |
3734 | mem_addr, mem_len, | |
3735 | &targ_addr, &targ_len); | |
392a587b | 3736 | if (targ_len <= 0) |
c906108c | 3737 | return 0; |
c906108c | 3738 | |
4930751a C |
3739 | if (should_write) |
3740 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3741 | else | |
3742 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3743 | ||
3744 | return res; | |
c906108c SS |
3745 | } |
3746 | ||
c906108c | 3747 | static void |
fba45db2 | 3748 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3749 | { |
3750 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3751 | } | |
3752 | \f | |
3753 | /* Stuff for dealing with the packets which are part of this protocol. | |
3754 | See comment at top of file for details. */ | |
3755 | ||
3756 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3757 | ||
3758 | static int | |
fba45db2 | 3759 | readchar (int timeout) |
c906108c SS |
3760 | { |
3761 | int ch; | |
3762 | ||
2cd58942 | 3763 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3764 | |
2acceee2 JM |
3765 | if (ch >= 0) |
3766 | return (ch & 0x7f); | |
3767 | ||
3768 | switch ((enum serial_rc) ch) | |
c906108c SS |
3769 | { |
3770 | case SERIAL_EOF: | |
2acceee2 | 3771 | target_mourn_inferior (); |
c906108c | 3772 | error ("Remote connection closed"); |
2acceee2 | 3773 | /* no return */ |
c906108c SS |
3774 | case SERIAL_ERROR: |
3775 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3776 | /* no return */ |
c906108c | 3777 | case SERIAL_TIMEOUT: |
2acceee2 | 3778 | break; |
c906108c | 3779 | } |
2acceee2 | 3780 | return ch; |
c906108c SS |
3781 | } |
3782 | ||
3783 | /* Send the command in BUF to the remote machine, and read the reply | |
3784 | into BUF. Report an error if we get an error reply. */ | |
3785 | ||
3786 | static void | |
c2d11a7d JM |
3787 | remote_send (char *buf, |
3788 | long sizeof_buf) | |
c906108c SS |
3789 | { |
3790 | putpkt (buf); | |
c2d11a7d | 3791 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3792 | |
3793 | if (buf[0] == 'E') | |
3794 | error ("Remote failure reply: %s", buf); | |
3795 | } | |
3796 | ||
3797 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3798 | string notation. */ | |
3799 | ||
3800 | static void | |
fba45db2 | 3801 | print_packet (char *buf) |
c906108c SS |
3802 | { |
3803 | puts_filtered ("\""); | |
43e526b9 | 3804 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3805 | puts_filtered ("\""); |
3806 | } | |
3807 | ||
3808 | int | |
fba45db2 | 3809 | putpkt (char *buf) |
c906108c SS |
3810 | { |
3811 | return putpkt_binary (buf, strlen (buf)); | |
3812 | } | |
3813 | ||
3814 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 3815 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
3816 | to account for the $, # and checksum, and for a possible /0 if we are |
3817 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3818 | ||
3819 | static int | |
fba45db2 | 3820 | putpkt_binary (char *buf, int cnt) |
c906108c | 3821 | { |
d01949b6 | 3822 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3823 | int i; |
3824 | unsigned char csum = 0; | |
11cf8741 | 3825 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 3826 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 3827 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 3828 | |
c906108c SS |
3829 | int ch; |
3830 | int tcount = 0; | |
3831 | char *p; | |
3832 | ||
3833 | /* Copy the packet into buffer BUF2, encapsulating it | |
3834 | and giving it a checksum. */ | |
3835 | ||
c906108c SS |
3836 | p = buf2; |
3837 | *p++ = '$'; | |
3838 | ||
3839 | for (i = 0; i < cnt; i++) | |
3840 | { | |
3841 | csum += buf[i]; | |
3842 | *p++ = buf[i]; | |
3843 | } | |
3844 | *p++ = '#'; | |
3845 | *p++ = tohex ((csum >> 4) & 0xf); | |
3846 | *p++ = tohex (csum & 0xf); | |
3847 | ||
3848 | /* Send it over and over until we get a positive ack. */ | |
3849 | ||
3850 | while (1) | |
3851 | { | |
3852 | int started_error_output = 0; | |
3853 | ||
3854 | if (remote_debug) | |
3855 | { | |
3856 | *p = '\0'; | |
43e526b9 JM |
3857 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3858 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3859 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3860 | gdb_flush (gdb_stdlog); |
c906108c | 3861 | } |
2cd58942 | 3862 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
3863 | perror_with_name ("putpkt: write failed"); |
3864 | ||
3865 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3866 | while (1) | |
3867 | { | |
3868 | ch = readchar (remote_timeout); | |
3869 | ||
c5aa993b | 3870 | if (remote_debug) |
c906108c SS |
3871 | { |
3872 | switch (ch) | |
3873 | { | |
3874 | case '+': | |
1216fa2c | 3875 | case '-': |
c906108c SS |
3876 | case SERIAL_TIMEOUT: |
3877 | case '$': | |
3878 | if (started_error_output) | |
3879 | { | |
3880 | putchar_unfiltered ('\n'); | |
3881 | started_error_output = 0; | |
3882 | } | |
3883 | } | |
3884 | } | |
3885 | ||
3886 | switch (ch) | |
3887 | { | |
3888 | case '+': | |
3889 | if (remote_debug) | |
0f71a2f6 | 3890 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3891 | return 1; |
1216fa2c AC |
3892 | case '-': |
3893 | if (remote_debug) | |
3894 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3895 | case SERIAL_TIMEOUT: |
c5aa993b | 3896 | tcount++; |
c906108c SS |
3897 | if (tcount > 3) |
3898 | return 0; | |
3899 | break; /* Retransmit buffer */ | |
3900 | case '$': | |
3901 | { | |
40e3f985 FN |
3902 | if (remote_debug) |
3903 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
3904 | /* It's probably an old response, and we're out of sync. |
3905 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 3906 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 3907 | continue; /* Now, go look for + */ |
c906108c SS |
3908 | } |
3909 | default: | |
3910 | if (remote_debug) | |
3911 | { | |
3912 | if (!started_error_output) | |
3913 | { | |
3914 | started_error_output = 1; | |
0f71a2f6 | 3915 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3916 | } |
0f71a2f6 | 3917 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3918 | } |
3919 | continue; | |
3920 | } | |
3921 | break; /* Here to retransmit */ | |
3922 | } | |
3923 | ||
3924 | #if 0 | |
3925 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3926 | able to get out next time we call QUIT, without anything as |
3927 | violent as interrupt_query. If we want to provide a way out of | |
3928 | here without getting to the next QUIT, it should be based on | |
3929 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3930 | if (quit_flag) |
3931 | { | |
3932 | quit_flag = 0; | |
3933 | interrupt_query (); | |
3934 | } | |
3935 | #endif | |
3936 | } | |
3937 | } | |
3938 | ||
3939 | /* Come here after finding the start of the frame. Collect the rest | |
3940 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
3941 | compression. No more than sizeof_buf-1 characters are read so that |
3942 | the buffer can be NUL terminated. | |
c906108c | 3943 | |
c2d11a7d JM |
3944 | Returns -1 on error, number of characters in buffer (ignoring the |
3945 | trailing NULL) on success. (could be extended to return one of the | |
3946 | SERIAL status indications). */ | |
3947 | ||
3948 | static long | |
3949 | read_frame (char *buf, | |
3950 | long sizeof_buf) | |
c906108c SS |
3951 | { |
3952 | unsigned char csum; | |
c2d11a7d | 3953 | long bc; |
c906108c SS |
3954 | int c; |
3955 | ||
3956 | csum = 0; | |
c2d11a7d | 3957 | bc = 0; |
c906108c SS |
3958 | |
3959 | while (1) | |
3960 | { | |
c2d11a7d | 3961 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 3962 | c = readchar (remote_timeout); |
c906108c SS |
3963 | switch (c) |
3964 | { | |
3965 | case SERIAL_TIMEOUT: | |
3966 | if (remote_debug) | |
0f71a2f6 | 3967 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 3968 | return -1; |
c906108c SS |
3969 | case '$': |
3970 | if (remote_debug) | |
0f71a2f6 JM |
3971 | fputs_filtered ("Saw new packet start in middle of old one\n", |
3972 | gdb_stdlog); | |
c2d11a7d | 3973 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
3974 | case '#': |
3975 | { | |
3976 | unsigned char pktcsum; | |
e1b09194 AC |
3977 | int check_0 = 0; |
3978 | int check_1 = 0; | |
c906108c | 3979 | |
c2d11a7d | 3980 | buf[bc] = '\0'; |
c906108c | 3981 | |
e1b09194 AC |
3982 | check_0 = readchar (remote_timeout); |
3983 | if (check_0 >= 0) | |
3984 | check_1 = readchar (remote_timeout); | |
802188a7 | 3985 | |
e1b09194 AC |
3986 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
3987 | { | |
3988 | if (remote_debug) | |
3989 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
3990 | return -1; | |
3991 | } | |
3992 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
3993 | { |
3994 | if (remote_debug) | |
3995 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
3996 | return -1; | |
3997 | } | |
c906108c | 3998 | |
e1b09194 | 3999 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4000 | if (csum == pktcsum) |
c2d11a7d | 4001 | return bc; |
c906108c | 4002 | |
c5aa993b | 4003 | if (remote_debug) |
c906108c | 4004 | { |
0f71a2f6 | 4005 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4006 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4007 | pktcsum, csum); |
4008 | fputs_filtered (buf, gdb_stdlog); | |
4009 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4010 | } |
c2d11a7d JM |
4011 | /* Number of characters in buffer ignoring trailing |
4012 | NUL. */ | |
4013 | return -1; | |
c906108c SS |
4014 | } |
4015 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4016 | { |
4017 | int repeat; | |
4018 | csum += c; | |
c906108c | 4019 | |
b4501125 AC |
4020 | c = readchar (remote_timeout); |
4021 | csum += c; | |
4022 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
c906108c | 4023 | |
c2d11a7d JM |
4024 | /* The character before ``*'' is repeated. */ |
4025 | ||
802188a7 | 4026 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4027 | && bc > 0 |
fb6e5c55 | 4028 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4029 | { |
c2d11a7d JM |
4030 | memset (&buf[bc], buf[bc - 1], repeat); |
4031 | bc += repeat; | |
c2c6d25f JM |
4032 | continue; |
4033 | } | |
4034 | ||
c2d11a7d | 4035 | buf[bc] = '\0'; |
c2c6d25f JM |
4036 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4037 | puts_filtered (buf); | |
4038 | puts_filtered ("\n"); | |
c2d11a7d | 4039 | return -1; |
c2c6d25f | 4040 | } |
c906108c | 4041 | default: |
c2d11a7d | 4042 | if (bc < sizeof_buf - 1) |
c906108c | 4043 | { |
c2d11a7d | 4044 | buf[bc++] = c; |
c906108c SS |
4045 | csum += c; |
4046 | continue; | |
4047 | } | |
4048 | ||
c2d11a7d | 4049 | buf[bc] = '\0'; |
c906108c SS |
4050 | puts_filtered ("Remote packet too long: "); |
4051 | puts_filtered (buf); | |
4052 | puts_filtered ("\n"); | |
4053 | ||
c2d11a7d | 4054 | return -1; |
c906108c SS |
4055 | } |
4056 | } | |
4057 | } | |
4058 | ||
4059 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4060 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4061 | this is used (in synchronous mode) to wait for a target that is is | |
4062 | executing user code to stop. */ | |
d9fcf2fb JM |
4063 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4064 | don't have to change all the calls to getpkt to deal with the | |
4065 | return value, because at the moment I don't know what the right | |
4066 | thing to do it for those. */ | |
c906108c | 4067 | void |
c2d11a7d JM |
4068 | getpkt (char *buf, |
4069 | long sizeof_buf, | |
4070 | int forever) | |
d9fcf2fb JM |
4071 | { |
4072 | int timed_out; | |
4073 | ||
4074 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4075 | } | |
4076 | ||
4077 | ||
4078 | /* Read a packet from the remote machine, with error checking, and | |
4079 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4080 | this is used (in synchronous mode) to wait for a target that is is | |
4081 | executing user code to stop. If FOREVER == 0, this function is | |
4082 | allowed to time out gracefully and return an indication of this to | |
4083 | the caller. */ | |
3172dc30 | 4084 | static int |
d9fcf2fb JM |
4085 | getpkt_sane (char *buf, |
4086 | long sizeof_buf, | |
4087 | int forever) | |
c906108c SS |
4088 | { |
4089 | int c; | |
4090 | int tries; | |
4091 | int timeout; | |
4092 | int val; | |
4093 | ||
c5aa993b | 4094 | strcpy (buf, "timeout"); |
c906108c SS |
4095 | |
4096 | if (forever) | |
4097 | { | |
c906108c | 4098 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4099 | } |
4100 | ||
4101 | else | |
4102 | timeout = remote_timeout; | |
4103 | ||
4104 | #define MAX_TRIES 3 | |
4105 | ||
4106 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4107 | { | |
4108 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4109 | continuously, but if it pauses, we'll get a zero from readchar |
4110 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4111 | |
4112 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4113 | After that, we expect characters to arrive at a brisk pace. They |
4114 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4115 | |
4116 | do | |
4117 | { | |
4118 | c = readchar (timeout); | |
4119 | ||
4120 | if (c == SERIAL_TIMEOUT) | |
4121 | { | |
2acceee2 | 4122 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4123 | { |
2acceee2 | 4124 | QUIT; |
c906108c SS |
4125 | target_mourn_inferior (); |
4126 | error ("Watchdog has expired. Target detached.\n"); | |
4127 | } | |
c906108c | 4128 | if (remote_debug) |
0f71a2f6 | 4129 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4130 | goto retry; |
4131 | } | |
4132 | } | |
4133 | while (c != '$'); | |
4134 | ||
4135 | /* We've found the start of a packet, now collect the data. */ | |
4136 | ||
c2d11a7d | 4137 | val = read_frame (buf, sizeof_buf); |
c906108c | 4138 | |
c2d11a7d | 4139 | if (val >= 0) |
c906108c SS |
4140 | { |
4141 | if (remote_debug) | |
43e526b9 JM |
4142 | { |
4143 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4144 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4145 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4146 | } | |
2cd58942 | 4147 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4148 | return 0; |
c906108c SS |
4149 | } |
4150 | ||
4151 | /* Try the whole thing again. */ | |
4152 | retry: | |
2cd58942 | 4153 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4154 | } |
4155 | ||
4156 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4157 | ||
4158 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4159 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4160 | return 1; |
c906108c SS |
4161 | } |
4162 | \f | |
4163 | static void | |
fba45db2 | 4164 | remote_kill (void) |
c906108c SS |
4165 | { |
4166 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4167 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4168 | if (kill_kludge) | |
4169 | { | |
4170 | kill_kludge = 0; | |
4171 | target_mourn_inferior (); | |
4172 | return; | |
4173 | } | |
4174 | ||
4175 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4176 | speaking terms with the remote system. */ | |
c5aa993b | 4177 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4178 | |
4179 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4180 | we do or not. For the existing stubs, kill is a noop. */ | |
4181 | target_mourn_inferior (); | |
4182 | } | |
4183 | ||
43ff13b4 JM |
4184 | /* Async version of remote_kill. */ |
4185 | static void | |
fba45db2 | 4186 | remote_async_kill (void) |
43ff13b4 JM |
4187 | { |
4188 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4189 | if (target_is_async_p ()) |
2cd58942 | 4190 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4191 | |
4192 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4193 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4194 | if (kill_kludge) | |
4195 | { | |
4196 | kill_kludge = 0; | |
4197 | target_mourn_inferior (); | |
4198 | return; | |
4199 | } | |
4200 | ||
4201 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4202 | speaking terms with the remote system. */ | |
c5aa993b | 4203 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4204 | |
4205 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4206 | we do or not. For the existing stubs, kill is a noop. */ | |
4207 | target_mourn_inferior (); | |
4208 | } | |
4209 | ||
c906108c | 4210 | static void |
fba45db2 | 4211 | remote_mourn (void) |
c906108c SS |
4212 | { |
4213 | remote_mourn_1 (&remote_ops); | |
4214 | } | |
4215 | ||
53a5351d | 4216 | static void |
fba45db2 | 4217 | remote_async_mourn (void) |
53a5351d JM |
4218 | { |
4219 | remote_mourn_1 (&remote_async_ops); | |
4220 | } | |
4221 | ||
c906108c | 4222 | static void |
fba45db2 | 4223 | extended_remote_mourn (void) |
c906108c SS |
4224 | { |
4225 | /* We do _not_ want to mourn the target like this; this will | |
4226 | remove the extended remote target from the target stack, | |
802188a7 | 4227 | and the next time the user says "run" it'll fail. |
c906108c SS |
4228 | |
4229 | FIXME: What is the right thing to do here? */ | |
4230 | #if 0 | |
4231 | remote_mourn_1 (&extended_remote_ops); | |
4232 | #endif | |
4233 | } | |
4234 | ||
4235 | /* Worker function for remote_mourn. */ | |
4236 | static void | |
fba45db2 | 4237 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4238 | { |
4239 | unpush_target (target); | |
4240 | generic_mourn_inferior (); | |
4241 | } | |
4242 | ||
4243 | /* In the extended protocol we want to be able to do things like | |
4244 | "run" and have them basically work as expected. So we need | |
802188a7 | 4245 | a special create_inferior function. |
c906108c SS |
4246 | |
4247 | FIXME: One day add support for changing the exec file | |
4248 | we're debugging, arguments and an environment. */ | |
4249 | ||
4250 | static void | |
c27cda74 AC |
4251 | extended_remote_create_inferior (char *exec_file, char *args, char **env, |
4252 | int from_tty) | |
c906108c SS |
4253 | { |
4254 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4255 | the remote server. */ | |
4256 | remove_breakpoints (); | |
4257 | ||
4258 | /* Now restart the remote server. */ | |
4259 | extended_remote_restart (); | |
4260 | ||
4261 | /* Now put the breakpoints back in. This way we're safe if the | |
4262 | restart function works via a unix fork on the remote side. */ | |
4263 | insert_breakpoints (); | |
4264 | ||
4265 | /* Clean up from the last time we were running. */ | |
4266 | clear_proceed_status (); | |
4267 | ||
4268 | /* Let the remote process run. */ | |
4269 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4270 | } | |
4271 | ||
43ff13b4 JM |
4272 | /* Async version of extended_remote_create_inferior. */ |
4273 | static void | |
c27cda74 AC |
4274 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env, |
4275 | int from_tty) | |
43ff13b4 JM |
4276 | { |
4277 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4278 | the remote server. */ | |
4279 | remove_breakpoints (); | |
4280 | ||
4281 | /* If running asynchronously, register the target file descriptor | |
4282 | with the event loop. */ | |
2acceee2 JM |
4283 | if (event_loop_p && target_can_async_p ()) |
4284 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4285 | |
4286 | /* Now restart the remote server. */ | |
4287 | extended_remote_restart (); | |
4288 | ||
4289 | /* Now put the breakpoints back in. This way we're safe if the | |
4290 | restart function works via a unix fork on the remote side. */ | |
4291 | insert_breakpoints (); | |
4292 | ||
4293 | /* Clean up from the last time we were running. */ | |
4294 | clear_proceed_status (); | |
4295 | ||
4296 | /* Let the remote process run. */ | |
4297 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4298 | } | |
c906108c | 4299 | \f |
c5aa993b | 4300 | |
aaab4dba | 4301 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4302 | instruction than other targets; in those use |
4303 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4304 | Also, bi-endian targets may define | |
4305 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4306 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4307 | just call the standard routines that are in mem-break.c. */ | |
4308 | ||
4309 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4310 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4311 | the ARCH-OS-tdep.c code can override the default. */ | |
4312 | ||
4313 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4314 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4315 | #endif |
4316 | ||
7fec2c59 | 4317 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4318 | |
4319 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4320 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4321 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4322 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4323 | #endif |
4324 | ||
7fec2c59 AC |
4325 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4326 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4327 | |
7fec2c59 | 4328 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4329 | |
aaab4dba AC |
4330 | /* Insert a breakpoint on targets that don't have any better |
4331 | breakpoint support. We read the contents of the target location | |
4332 | and stash it, then overwrite it with a breakpoint instruction. | |
4333 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4334 | is a pointer to memory allocated for saving the target contents. | |
4335 | It is guaranteed by the caller to be long enough to save the number | |
4336 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4337 | |
4338 | static int | |
fba45db2 | 4339 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4340 | { |
d01949b6 | 4341 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4342 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4343 | int val; |
802188a7 | 4344 | #endif |
96baa820 JM |
4345 | int bp_size; |
4346 | ||
d471ea57 AC |
4347 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4348 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4349 | fails, and the user has explicitly requested the Z support then | |
4350 | report an error, otherwise, mark it disabled and go on. */ | |
802188a7 | 4351 | |
d471ea57 | 4352 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4353 | { |
d01949b6 | 4354 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4355 | char *p = buf; |
802188a7 | 4356 | |
0caabb7e | 4357 | addr = remote_address_masked (addr); |
96baa820 JM |
4358 | *(p++) = 'Z'; |
4359 | *(p++) = '0'; | |
4360 | *(p++) = ','; | |
0caabb7e AC |
4361 | p += hexnumstr (p, (ULONGEST) addr); |
4362 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4363 | sprintf (p, ",%d", bp_size); |
802188a7 | 4364 | |
96baa820 | 4365 | putpkt (buf); |
d01949b6 | 4366 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4367 | |
d471ea57 | 4368 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4369 | { |
d471ea57 AC |
4370 | case PACKET_ERROR: |
4371 | return -1; | |
4372 | case PACKET_OK: | |
4373 | return 0; | |
4374 | case PACKET_UNKNOWN: | |
4375 | break; | |
96baa820 JM |
4376 | } |
4377 | } | |
c906108c | 4378 | |
802188a7 | 4379 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4380 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4381 | ||
4382 | if (val == 0) | |
4383 | { | |
d7449b42 | 4384 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4385 | val = target_write_memory (addr, (char *) big_break_insn, |
4386 | sizeof big_break_insn); | |
4387 | else | |
4388 | val = target_write_memory (addr, (char *) little_break_insn, | |
4389 | sizeof little_break_insn); | |
4390 | } | |
4391 | ||
4392 | return val; | |
4393 | #else | |
4394 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4395 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4396 | } |
4397 | ||
4398 | static int | |
fba45db2 | 4399 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4400 | { |
d01949b6 | 4401 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4402 | int bp_size; |
4403 | ||
d471ea57 | 4404 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4405 | { |
d01949b6 | 4406 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4407 | char *p = buf; |
802188a7 | 4408 | |
96baa820 JM |
4409 | *(p++) = 'z'; |
4410 | *(p++) = '0'; | |
4411 | *(p++) = ','; | |
4412 | ||
0caabb7e AC |
4413 | addr = remote_address_masked (addr); |
4414 | p += hexnumstr (p, (ULONGEST) addr); | |
4415 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4416 | sprintf (p, ",%d", bp_size); |
802188a7 | 4417 | |
96baa820 | 4418 | putpkt (buf); |
d01949b6 | 4419 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4420 | |
4421 | return (buf[0] == 'E'); | |
4422 | } | |
4423 | ||
7fec2c59 | 4424 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4425 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4426 | #else | |
4427 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4428 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4429 | } |
4430 | ||
d471ea57 AC |
4431 | static int |
4432 | watchpoint_to_Z_packet (int type) | |
4433 | { | |
4434 | switch (type) | |
4435 | { | |
4436 | case hw_write: | |
4437 | return 2; | |
4438 | break; | |
4439 | case hw_read: | |
4440 | return 3; | |
4441 | break; | |
4442 | case hw_access: | |
4443 | return 4; | |
4444 | break; | |
4445 | default: | |
8e65ff28 AC |
4446 | internal_error (__FILE__, __LINE__, |
4447 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4448 | } |
4449 | } | |
4450 | ||
3c3bea1c | 4451 | static int |
fba45db2 | 4452 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4453 | { |
d01949b6 AC |
4454 | struct remote_state *rs = get_remote_state (); |
4455 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4456 | char *p; |
d471ea57 | 4457 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4458 | |
d471ea57 AC |
4459 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4460 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4461 | remote_protocol_Z[packet].name, | |
4462 | remote_protocol_Z[packet].title); | |
802188a7 | 4463 | |
d471ea57 | 4464 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4465 | p = strchr (buf, '\0'); |
4466 | addr = remote_address_masked (addr); | |
4467 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4468 | sprintf (p, ",%x", len); |
802188a7 | 4469 | |
96baa820 | 4470 | putpkt (buf); |
d01949b6 | 4471 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4472 | |
d471ea57 AC |
4473 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4474 | { | |
4475 | case PACKET_ERROR: | |
4476 | case PACKET_UNKNOWN: | |
4477 | return -1; | |
4478 | case PACKET_OK: | |
4479 | return 0; | |
4480 | } | |
8e65ff28 AC |
4481 | internal_error (__FILE__, __LINE__, |
4482 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4483 | } |
4484 | ||
d471ea57 | 4485 | |
3c3bea1c | 4486 | static int |
fba45db2 | 4487 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4488 | { |
d01949b6 AC |
4489 | struct remote_state *rs = get_remote_state (); |
4490 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4491 | char *p; |
d471ea57 AC |
4492 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4493 | ||
4494 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4495 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4496 | remote_protocol_Z[packet].name, | |
4497 | remote_protocol_Z[packet].title); | |
802188a7 | 4498 | |
d471ea57 | 4499 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4500 | p = strchr (buf, '\0'); |
4501 | addr = remote_address_masked (addr); | |
4502 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4503 | sprintf (p, ",%x", len); |
96baa820 | 4504 | putpkt (buf); |
d01949b6 | 4505 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4506 | |
d471ea57 AC |
4507 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4508 | { | |
4509 | case PACKET_ERROR: | |
4510 | case PACKET_UNKNOWN: | |
4511 | return -1; | |
4512 | case PACKET_OK: | |
4513 | return 0; | |
4514 | } | |
8e65ff28 AC |
4515 | internal_error (__FILE__, __LINE__, |
4516 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4517 | } |
4518 | ||
3c3bea1c | 4519 | |
501eef12 AC |
4520 | int remote_hw_watchpoint_limit = -1; |
4521 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4522 | |
b9362cc7 | 4523 | static int |
3c3bea1c | 4524 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4525 | { |
3c3bea1c GS |
4526 | if (type == bp_hardware_breakpoint) |
4527 | { | |
4528 | if (remote_hw_breakpoint_limit == 0) | |
4529 | return 0; | |
501eef12 AC |
4530 | else if (remote_hw_breakpoint_limit < 0) |
4531 | return 1; | |
3c3bea1c GS |
4532 | else if (cnt <= remote_hw_breakpoint_limit) |
4533 | return 1; | |
4534 | } | |
4535 | else | |
4536 | { | |
4537 | if (remote_hw_watchpoint_limit == 0) | |
4538 | return 0; | |
501eef12 AC |
4539 | else if (remote_hw_watchpoint_limit < 0) |
4540 | return 1; | |
3c3bea1c GS |
4541 | else if (ot) |
4542 | return -1; | |
4543 | else if (cnt <= remote_hw_watchpoint_limit) | |
4544 | return 1; | |
4545 | } | |
4546 | return -1; | |
4547 | } | |
4548 | ||
b9362cc7 | 4549 | static int |
3c3bea1c GS |
4550 | remote_stopped_by_watchpoint (void) |
4551 | { | |
4552 | return remote_stopped_by_watchpoint_p; | |
4553 | } | |
4554 | ||
7270d8f2 OF |
4555 | extern int stepped_after_stopped_by_watchpoint; |
4556 | ||
b9362cc7 | 4557 | static CORE_ADDR |
3c3bea1c GS |
4558 | remote_stopped_data_address (void) |
4559 | { | |
7270d8f2 OF |
4560 | if (remote_stopped_by_watchpoint () |
4561 | || stepped_after_stopped_by_watchpoint) | |
3c3bea1c GS |
4562 | return remote_watch_data_address; |
4563 | return (CORE_ADDR)0; | |
4564 | } | |
4565 | ||
4566 | ||
4567 | static int | |
4568 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4569 | { | |
4570 | int len = 0; | |
d01949b6 AC |
4571 | struct remote_state *rs = get_remote_state (); |
4572 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4573 | char *p = buf; |
802188a7 | 4574 | |
c8189ed1 GS |
4575 | /* The length field should be set to the size of a breakpoint |
4576 | instruction. */ | |
4577 | ||
802188a7 | 4578 | BREAKPOINT_FROM_PC (&addr, &len); |
3c3bea1c | 4579 | |
d471ea57 AC |
4580 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4581 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4582 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4583 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4584 | |
96baa820 JM |
4585 | *(p++) = 'Z'; |
4586 | *(p++) = '1'; | |
4587 | *(p++) = ','; | |
802188a7 | 4588 | |
96baa820 JM |
4589 | addr = remote_address_masked (addr); |
4590 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4591 | sprintf (p, ",%x", len); |
96baa820 JM |
4592 | |
4593 | putpkt (buf); | |
d01949b6 | 4594 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4595 | |
d471ea57 AC |
4596 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4597 | { | |
4598 | case PACKET_ERROR: | |
4599 | case PACKET_UNKNOWN: | |
4600 | return -1; | |
4601 | case PACKET_OK: | |
4602 | return 0; | |
4603 | } | |
8e65ff28 | 4604 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4605 | "remote_insert_hw_breakpoint: reached end of function"); |
96baa820 JM |
4606 | } |
4607 | ||
d471ea57 | 4608 | |
802188a7 | 4609 | static int |
3c3bea1c | 4610 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) |
96baa820 | 4611 | { |
3c3bea1c | 4612 | int len; |
d01949b6 AC |
4613 | struct remote_state *rs = get_remote_state (); |
4614 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4615 | char *p = buf; |
c8189ed1 GS |
4616 | |
4617 | /* The length field should be set to the size of a breakpoint | |
4618 | instruction. */ | |
4619 | ||
4620 | BREAKPOINT_FROM_PC (&addr, &len); | |
4621 | ||
d471ea57 AC |
4622 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4623 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4624 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4625 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4626 | |
96baa820 JM |
4627 | *(p++) = 'z'; |
4628 | *(p++) = '1'; | |
4629 | *(p++) = ','; | |
802188a7 | 4630 | |
96baa820 JM |
4631 | addr = remote_address_masked (addr); |
4632 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4633 | sprintf (p, ",%x", len); |
96baa820 JM |
4634 | |
4635 | putpkt(buf); | |
d01949b6 | 4636 | getpkt (buf, (rs->remote_packet_size), 0); |
802188a7 | 4637 | |
d471ea57 AC |
4638 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4639 | { | |
4640 | case PACKET_ERROR: | |
4641 | case PACKET_UNKNOWN: | |
4642 | return -1; | |
4643 | case PACKET_OK: | |
4644 | return 0; | |
4645 | } | |
8e65ff28 | 4646 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4647 | "remote_remove_hw_breakpoint: reached end of function"); |
96baa820 | 4648 | } |
96baa820 | 4649 | |
c906108c SS |
4650 | /* Some targets are only capable of doing downloads, and afterwards |
4651 | they switch to the remote serial protocol. This function provides | |
4652 | a clean way to get from the download target to the remote target. | |
4653 | It's basically just a wrapper so that we don't have to expose any | |
4654 | of the internal workings of remote.c. | |
4655 | ||
4656 | Prior to calling this routine, you should shutdown the current | |
4657 | target code, else you will get the "A program is being debugged | |
4658 | already..." message. Usually a call to pop_target() suffices. */ | |
4659 | ||
4660 | void | |
fba45db2 | 4661 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4662 | { |
4663 | printf_filtered ("Switching to remote protocol\n"); | |
4664 | remote_open (name, from_tty); | |
4665 | } | |
4666 | ||
c906108c SS |
4667 | /* Table used by the crc32 function to calcuate the checksum. */ |
4668 | ||
c5aa993b JM |
4669 | static unsigned long crc32_table[256] = |
4670 | {0, 0}; | |
c906108c SS |
4671 | |
4672 | static unsigned long | |
fba45db2 | 4673 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4674 | { |
c5aa993b | 4675 | if (!crc32_table[1]) |
c906108c SS |
4676 | { |
4677 | /* Initialize the CRC table and the decoding table. */ | |
4678 | int i, j; | |
4679 | unsigned int c; | |
4680 | ||
4681 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4682 | { |
4683 | for (c = i << 24, j = 8; j > 0; --j) | |
4684 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4685 | crc32_table[i] = c; | |
4686 | } | |
c906108c SS |
4687 | } |
4688 | ||
4689 | while (len--) | |
4690 | { | |
4691 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4692 | buf++; | |
4693 | } | |
4694 | return crc; | |
4695 | } | |
4696 | ||
4697 | /* compare-sections command | |
4698 | ||
4699 | With no arguments, compares each loadable section in the exec bfd | |
4700 | with the same memory range on the target, and reports mismatches. | |
4701 | Useful for verifying the image on the target against the exec file. | |
4702 | Depends on the target understanding the new "qCRC:" request. */ | |
4703 | ||
e514a9d6 JM |
4704 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4705 | target method (target verify memory) and generic version of the | |
4706 | actual command. This will allow other high-level code (especially | |
4707 | generic_load()) to make use of this target functionality. */ | |
4708 | ||
c906108c | 4709 | static void |
fba45db2 | 4710 | compare_sections_command (char *args, int from_tty) |
c906108c | 4711 | { |
d01949b6 | 4712 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4713 | asection *s; |
4714 | unsigned long host_crc, target_crc; | |
4715 | extern bfd *exec_bfd; | |
4716 | struct cleanup *old_chain; | |
085dd6e6 JM |
4717 | char *tmp; |
4718 | char *sectdata; | |
ce359b09 | 4719 | const char *sectname; |
d01949b6 | 4720 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4721 | bfd_size_type size; |
4722 | bfd_vma lma; | |
4723 | int matched = 0; | |
4724 | int mismatched = 0; | |
4725 | ||
4726 | if (!exec_bfd) | |
4727 | error ("command cannot be used without an exec file"); | |
4728 | if (!current_target.to_shortname || | |
4729 | strcmp (current_target.to_shortname, "remote") != 0) | |
4730 | error ("command can only be used with remote target"); | |
4731 | ||
c5aa993b | 4732 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4733 | { |
4734 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4735 | continue; /* skip non-loadable section */ |
c906108c | 4736 | |
2c500098 | 4737 | size = bfd_get_section_size (s); |
c906108c | 4738 | if (size == 0) |
c5aa993b | 4739 | continue; /* skip zero-length section */ |
c906108c | 4740 | |
ce359b09 | 4741 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4742 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4743 | continue; /* not the section selected by user */ |
c906108c | 4744 | |
c5aa993b | 4745 | matched = 1; /* do this section */ |
c906108c SS |
4746 | lma = s->lma; |
4747 | /* FIXME: assumes lma can fit into long */ | |
4748 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4749 | putpkt (buf); | |
4750 | ||
4751 | /* be clever; compute the host_crc before waiting for target reply */ | |
4752 | sectdata = xmalloc (size); | |
b8c9b27d | 4753 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4754 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4755 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4756 | ||
d01949b6 | 4757 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 4758 | if (buf[0] == 'E') |
823ca731 AC |
4759 | error ("target memory fault, section %s, range 0x%s -- 0x%s", |
4760 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4761 | if (buf[0] != 'C') |
4762 | error ("remote target does not support this operation"); | |
4763 | ||
4764 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4765 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4766 | ||
d4f3574e SS |
4767 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4768 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4769 | if (host_crc == target_crc) |
4770 | printf_filtered ("matched.\n"); | |
4771 | else | |
c5aa993b JM |
4772 | { |
4773 | printf_filtered ("MIS-MATCHED!\n"); | |
4774 | mismatched++; | |
4775 | } | |
c906108c SS |
4776 | |
4777 | do_cleanups (old_chain); | |
4778 | } | |
4779 | if (mismatched > 0) | |
4780 | warning ("One or more sections of the remote executable does not match\n\ | |
4781 | the loaded file\n"); | |
4782 | if (args && !matched) | |
4783 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4784 | } | |
4785 | ||
1e3ff5ad | 4786 | static LONGEST |
4b8a223f | 4787 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
8aa91c1e | 4788 | const char *annex, void *readbuf, const void *writebuf, |
1e3ff5ad | 4789 | ULONGEST offset, LONGEST len) |
c906108c | 4790 | { |
d01949b6 | 4791 | struct remote_state *rs = get_remote_state (); |
c906108c | 4792 | int i; |
d01949b6 | 4793 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 4794 | char *p2 = &buf2[0]; |
1e3ff5ad | 4795 | char query_type; |
c906108c | 4796 | |
4b8a223f AC |
4797 | /* Only handle reads. */ |
4798 | if (writebuf != NULL || readbuf == NULL) | |
4799 | return -1; | |
4800 | ||
1e3ff5ad AC |
4801 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4802 | objects!!! Instead specify new query packets. */ | |
4803 | switch (object) | |
c906108c | 4804 | { |
1e3ff5ad AC |
4805 | case TARGET_OBJECT_KOD: |
4806 | query_type = 'K'; | |
4807 | break; | |
4808 | case TARGET_OBJECT_AVR: | |
4809 | query_type = 'R'; | |
4810 | break; | |
802188a7 RM |
4811 | |
4812 | case TARGET_OBJECT_AUXV: | |
4813 | if (remote_protocol_qPart_auxv.support != PACKET_DISABLE) | |
4814 | { | |
4815 | unsigned int total = 0; | |
4816 | while (len > 0) | |
4817 | { | |
4818 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
4819 | snprintf (buf2, rs->remote_packet_size, | |
4820 | "qPart:auxv:read::%s,%s", | |
4821 | phex_nz (offset, sizeof offset), | |
4822 | phex_nz (n, sizeof n)); | |
4823 | i = putpkt (buf2); | |
4824 | if (i < 0) | |
4825 | return total > 0 ? total : i; | |
4826 | buf2[0] = '\0'; | |
4827 | getpkt (buf2, rs->remote_packet_size, 0); | |
4828 | if (packet_ok (buf2, &remote_protocol_qPart_auxv) != PACKET_OK) | |
4829 | return total > 0 ? total : -1; | |
4830 | if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0') | |
4831 | break; /* Got EOF indicator. */ | |
4832 | /* Got some data. */ | |
4833 | i = hex2bin (buf2, readbuf, len); | |
4834 | if (i > 0) | |
4835 | { | |
4836 | readbuf = (void *) ((char *) readbuf + i); | |
4837 | offset += i; | |
4838 | len -= i; | |
4839 | total += i; | |
4840 | } | |
4841 | } | |
4842 | return total; | |
4843 | } | |
4844 | return -1; | |
4845 | ||
1e3ff5ad | 4846 | default: |
c906108c SS |
4847 | return -1; |
4848 | } | |
4849 | ||
4b8a223f | 4850 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 4851 | buffer size. */ |
4b8a223f | 4852 | if (offset == 0 && len == 0) |
1e3ff5ad AC |
4853 | return (rs->remote_packet_size); |
4854 | /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is | |
4855 | not large enough let the caller. */ | |
4856 | if (len < (rs->remote_packet_size)) | |
4857 | return -1; | |
4858 | len = rs->remote_packet_size; | |
4859 | ||
c906108c | 4860 | /* except for querying the minimum buffer size, target must be open */ |
c5aa993b | 4861 | if (!remote_desc) |
c906108c SS |
4862 | error ("remote query is only available after target open"); |
4863 | ||
1e3ff5ad | 4864 | gdb_assert (annex != NULL); |
4b8a223f | 4865 | gdb_assert (readbuf != NULL); |
c906108c SS |
4866 | |
4867 | *p2++ = 'q'; | |
4868 | *p2++ = query_type; | |
4869 | ||
4870 | /* we used one buffer char for the remote protocol q command and another | |
4871 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4872 | plus one extra in case we are debugging (remote_debug), | |
4873 | we have PBUFZIZ - 7 left to pack the query string */ | |
4874 | i = 0; | |
1e3ff5ad | 4875 | while (annex[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c | 4876 | { |
1e3ff5ad AC |
4877 | /* Bad caller may have sent forbidden characters. */ |
4878 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
4879 | *p2++ = annex[i]; | |
c906108c SS |
4880 | i++; |
4881 | } | |
1e3ff5ad AC |
4882 | *p2 = '\0'; |
4883 | gdb_assert (annex[i] == '\0'); | |
c906108c SS |
4884 | |
4885 | i = putpkt (buf2); | |
c5aa993b JM |
4886 | if (i < 0) |
4887 | return i; | |
c906108c | 4888 | |
4b8a223f | 4889 | getpkt (readbuf, len, 0); |
c906108c | 4890 | |
4b8a223f | 4891 | return strlen (readbuf); |
c906108c SS |
4892 | } |
4893 | ||
96baa820 JM |
4894 | static void |
4895 | remote_rcmd (char *command, | |
d9fcf2fb | 4896 | struct ui_file *outbuf) |
96baa820 | 4897 | { |
d01949b6 | 4898 | struct remote_state *rs = get_remote_state (); |
96baa820 | 4899 | int i; |
d01949b6 | 4900 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
4901 | char *p = buf; |
4902 | ||
4903 | if (!remote_desc) | |
4904 | error ("remote rcmd is only available after target open"); | |
4905 | ||
7be570e7 JM |
4906 | /* Send a NULL command across as an empty command */ |
4907 | if (command == NULL) | |
4908 | command = ""; | |
4909 | ||
96baa820 JM |
4910 | /* The query prefix */ |
4911 | strcpy (buf, "qRcmd,"); | |
4912 | p = strchr (buf, '\0'); | |
4913 | ||
d01949b6 | 4914 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
4915 | error ("\"monitor\" command ``%s'' is too long\n", command); |
4916 | ||
4917 | /* Encode the actual command */ | |
30559e10 | 4918 | bin2hex (command, p, 0); |
96baa820 JM |
4919 | |
4920 | if (putpkt (buf) < 0) | |
4921 | error ("Communication problem with target\n"); | |
4922 | ||
4923 | /* get/display the response */ | |
4924 | while (1) | |
4925 | { | |
4926 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
4927 | buf[0] = '\0'; | |
d01949b6 | 4928 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4929 | if (buf[0] == '\0') |
4930 | error ("Target does not support this command\n"); | |
4931 | if (buf[0] == 'O' && buf[1] != 'K') | |
4932 | { | |
4933 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
4934 | continue; | |
4935 | } | |
4936 | if (strcmp (buf, "OK") == 0) | |
4937 | break; | |
7be570e7 JM |
4938 | if (strlen (buf) == 3 && buf[0] == 'E' |
4939 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4940 | { | |
4941 | error ("Protocol error with Rcmd"); | |
4942 | } | |
96baa820 JM |
4943 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4944 | { | |
4945 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4946 | fputc_unfiltered (c, outbuf); | |
4947 | } | |
4948 | break; | |
4949 | } | |
4950 | } | |
4951 | ||
c906108c | 4952 | static void |
fba45db2 | 4953 | packet_command (char *args, int from_tty) |
c906108c | 4954 | { |
d01949b6 AC |
4955 | struct remote_state *rs = get_remote_state (); |
4956 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 4957 | |
c5aa993b | 4958 | if (!remote_desc) |
c906108c SS |
4959 | error ("command can only be used with remote target"); |
4960 | ||
c5aa993b | 4961 | if (!args) |
c906108c SS |
4962 | error ("remote-packet command requires packet text as argument"); |
4963 | ||
4964 | puts_filtered ("sending: "); | |
4965 | print_packet (args); | |
4966 | puts_filtered ("\n"); | |
4967 | putpkt (args); | |
4968 | ||
d01949b6 | 4969 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
4970 | puts_filtered ("received: "); |
4971 | print_packet (buf); | |
4972 | puts_filtered ("\n"); | |
4973 | } | |
4974 | ||
4975 | #if 0 | |
4976 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
4977 | ||
a14ed312 | 4978 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 4979 | |
a14ed312 | 4980 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 4981 | |
a14ed312 | 4982 | static void threadalive_test (char *cmd, int tty); |
c906108c | 4983 | |
a14ed312 | 4984 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 4985 | |
a14ed312 | 4986 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 4987 | |
a14ed312 | 4988 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 4989 | |
a14ed312 | 4990 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 4991 | |
a14ed312 | 4992 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 4993 | |
a14ed312 | 4994 | static void init_remote_threadtests (void); |
c906108c | 4995 | |
c5aa993b | 4996 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
4997 | |
4998 | static void | |
fba45db2 | 4999 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5000 | { |
5001 | int sample_thread = SAMPLE_THREAD; | |
5002 | ||
5003 | printf_filtered ("Remote threadset test\n"); | |
5004 | set_thread (sample_thread, 1); | |
5005 | } | |
5006 | ||
5007 | ||
5008 | static void | |
fba45db2 | 5009 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5010 | { |
5011 | int sample_thread = SAMPLE_THREAD; | |
5012 | ||
39f77062 | 5013 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5014 | printf_filtered ("PASS: Thread alive test\n"); |
5015 | else | |
5016 | printf_filtered ("FAIL: Thread alive test\n"); | |
5017 | } | |
5018 | ||
a14ed312 | 5019 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5020 | |
5021 | void | |
fba45db2 | 5022 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5023 | { |
5024 | char hexid[20]; | |
5025 | ||
5026 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5027 | hexid[16] = 0; | |
5028 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5029 | } | |
5030 | ||
5031 | static void | |
fba45db2 | 5032 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5033 | { |
5034 | int startflag = 1; | |
5035 | threadref nextthread; | |
5036 | int done, result_count; | |
5037 | threadref threadlist[3]; | |
5038 | ||
5039 | printf_filtered ("Remote Threadlist test\n"); | |
5040 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5041 | &result_count, &threadlist[0])) | |
5042 | printf_filtered ("FAIL: threadlist test\n"); | |
5043 | else | |
5044 | { | |
5045 | threadref *scan = threadlist; | |
5046 | threadref *limit = scan + result_count; | |
5047 | ||
5048 | while (scan < limit) | |
5049 | output_threadid (" thread ", scan++); | |
5050 | } | |
5051 | } | |
5052 | ||
5053 | void | |
fba45db2 | 5054 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5055 | { |
5056 | output_threadid ("Threadid: ", &info->threadid); | |
5057 | printf_filtered ("Name: %s\n ", info->shortname); | |
5058 | printf_filtered ("State: %s\n", info->display); | |
5059 | printf_filtered ("other: %s\n\n", info->more_display); | |
5060 | } | |
5061 | ||
5062 | int | |
fba45db2 | 5063 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5064 | { |
5065 | int result; | |
5066 | int set; | |
5067 | struct gdb_ext_thread_info threadinfo; | |
5068 | ||
5069 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5070 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5071 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5072 | display_thread_info (&threadinfo); | |
5073 | return result; | |
5074 | } | |
5075 | ||
5076 | static void | |
fba45db2 | 5077 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5078 | { |
5079 | int athread = SAMPLE_THREAD; | |
5080 | threadref thread; | |
5081 | int set; | |
5082 | ||
5083 | int_to_threadref (&thread, athread); | |
5084 | printf_filtered ("Remote Threadinfo test\n"); | |
5085 | if (!get_and_display_threadinfo (&thread)) | |
5086 | printf_filtered ("FAIL cannot get thread info\n"); | |
5087 | } | |
5088 | ||
5089 | static int | |
fba45db2 | 5090 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5091 | { |
5092 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5093 | return get_and_display_threadinfo (ref); | |
5094 | } | |
5095 | ||
5096 | static void | |
fba45db2 | 5097 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5098 | { |
5099 | printf_filtered ("Remote Threadlist update test\n"); | |
5100 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5101 | } | |
5102 | ||
5103 | static void | |
5104 | init_remote_threadtests (void) | |
5105 | { | |
5106 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5107 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5108 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5109 | "Fetch and display info about one thread"); | |
5110 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5111 | "Test setting to a different thread"); | |
5112 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5113 | "Iterate through updating all remote thread info"); | |
5114 | add_com ("talive", class_obscure, threadalive_test, | |
5115 | " Remote thread alive test "); | |
5116 | } | |
5117 | ||
5118 | #endif /* 0 */ | |
5119 | ||
f3fb8c85 MS |
5120 | /* Convert a thread ID to a string. Returns the string in a static |
5121 | buffer. */ | |
5122 | ||
5123 | static char * | |
39f77062 | 5124 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5125 | { |
5126 | static char buf[30]; | |
5127 | ||
39f77062 | 5128 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5129 | return buf; |
5130 | } | |
5131 | ||
c906108c | 5132 | static void |
fba45db2 | 5133 | init_remote_ops (void) |
c906108c | 5134 | { |
c5aa993b | 5135 | remote_ops.to_shortname = "remote"; |
c906108c | 5136 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5137 | remote_ops.to_doc = |
c906108c | 5138 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5139 | Specify the serial device it is connected to\n\ |
5140 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5141 | remote_ops.to_open = remote_open; |
5142 | remote_ops.to_close = remote_close; | |
c906108c | 5143 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5144 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5145 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5146 | remote_ops.to_wait = remote_wait; |
5147 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5148 | remote_ops.to_store_registers = remote_store_registers; | |
5149 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5150 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5151 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5152 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5153 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5154 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5155 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5156 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5157 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5158 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5159 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5160 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5161 | remote_ops.to_kill = remote_kill; |
5162 | remote_ops.to_load = generic_load; | |
c906108c SS |
5163 | remote_ops.to_mourn_inferior = remote_mourn; |
5164 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5165 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5166 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5167 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5168 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5169 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5170 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5171 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5172 | remote_ops.to_has_all_memory = 1; |
5173 | remote_ops.to_has_memory = 1; | |
5174 | remote_ops.to_has_stack = 1; | |
5175 | remote_ops.to_has_registers = 1; | |
5176 | remote_ops.to_has_execution = 1; | |
5177 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5178 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5179 | } |
5180 | ||
5181 | /* Set up the extended remote vector by making a copy of the standard | |
5182 | remote vector and adding to it. */ | |
5183 | ||
5184 | static void | |
fba45db2 | 5185 | init_extended_remote_ops (void) |
c906108c SS |
5186 | { |
5187 | extended_remote_ops = remote_ops; | |
5188 | ||
0f71a2f6 | 5189 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5190 | extended_remote_ops.to_longname = |
c906108c | 5191 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5192 | extended_remote_ops.to_doc = |
c906108c SS |
5193 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5194 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5195 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5196 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5197 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5198 | } |
5199 | ||
6426a772 JM |
5200 | static int |
5201 | remote_can_async_p (void) | |
5202 | { | |
5203 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5204 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5205 | } |
5206 | ||
5207 | static int | |
5208 | remote_is_async_p (void) | |
5209 | { | |
5210 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5211 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5212 | } |
5213 | ||
2acceee2 JM |
5214 | /* Pass the SERIAL event on and up to the client. One day this code |
5215 | will be able to delay notifying the client of an event until the | |
5216 | point where an entire packet has been received. */ | |
5217 | ||
5218 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5219 | static void *async_client_context; | |
5220 | static serial_event_ftype remote_async_serial_handler; | |
5221 | ||
6426a772 | 5222 | static void |
819cc324 | 5223 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5224 | { |
2acceee2 JM |
5225 | /* Don't propogate error information up to the client. Instead let |
5226 | the client find out about the error by querying the target. */ | |
5227 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5228 | } | |
5229 | ||
5230 | static void | |
5231 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5232 | { | |
ed9a39eb | 5233 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5234 | internal_error (__FILE__, __LINE__, |
5235 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5236 | |
2acceee2 JM |
5237 | if (callback != NULL) |
5238 | { | |
2cd58942 | 5239 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5240 | async_client_callback = callback; |
5241 | async_client_context = context; | |
5242 | } | |
5243 | else | |
2cd58942 | 5244 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5245 | } |
5246 | ||
43ff13b4 JM |
5247 | /* Target async and target extended-async. |
5248 | ||
5249 | This are temporary targets, until it is all tested. Eventually | |
5250 | async support will be incorporated int the usual 'remote' | |
5251 | target. */ | |
5252 | ||
5253 | static void | |
c2d11a7d | 5254 | init_remote_async_ops (void) |
43ff13b4 JM |
5255 | { |
5256 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5257 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5258 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5259 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5260 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5261 | remote_async_ops.to_open = remote_async_open; |
5262 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5263 | remote_async_ops.to_detach = remote_detach; |
5264 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5265 | remote_async_ops.to_resume = remote_async_resume; |
5266 | remote_async_ops.to_wait = remote_async_wait; | |
5267 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5268 | remote_async_ops.to_store_registers = remote_store_registers; | |
5269 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5270 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5271 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5272 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5273 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5274 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5275 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5276 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5277 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5278 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5279 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5280 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5281 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5282 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5283 | remote_async_ops.to_kill = remote_async_kill; |
5284 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5285 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5286 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5287 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5288 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5289 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5290 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5291 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5292 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5293 | remote_async_ops.to_stratum = process_stratum; |
5294 | remote_async_ops.to_has_all_memory = 1; | |
5295 | remote_async_ops.to_has_memory = 1; | |
5296 | remote_async_ops.to_has_stack = 1; | |
5297 | remote_async_ops.to_has_registers = 1; | |
5298 | remote_async_ops.to_has_execution = 1; | |
5299 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5300 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5301 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5302 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5303 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5304 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5305 | } |
5306 | ||
5307 | /* Set up the async extended remote vector by making a copy of the standard | |
5308 | remote vector and adding to it. */ | |
5309 | ||
5310 | static void | |
c2d11a7d | 5311 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5312 | { |
5313 | extended_async_remote_ops = remote_async_ops; | |
5314 | ||
5315 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5316 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5317 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5318 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5319 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5320 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5321 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5322 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5323 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5324 | } | |
5325 | ||
5a2468f5 | 5326 | static void |
c2d11a7d | 5327 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5328 | { |
5a2468f5 JM |
5329 | } |
5330 | ||
d471ea57 AC |
5331 | static void |
5332 | show_remote_cmd (char *args, int from_tty) | |
5333 | { | |
e9e68a56 AC |
5334 | /* FIXME: cagney/2002-06-15: This function should iterate over |
5335 | remote_show_cmdlist for a list of sub commands to show. */ | |
5336 | show_remote_protocol_Z_packet_cmd (args, from_tty, NULL); | |
e9e68a56 AC |
5337 | show_remote_protocol_P_packet_cmd (args, from_tty, NULL); |
5338 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL); | |
506fb367 | 5339 | show_remote_protocol_vcont_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 5340 | show_remote_protocol_binary_download_cmd (args, from_tty, NULL); |
802188a7 | 5341 | show_remote_protocol_qPart_auxv_packet_cmd (args, from_tty, NULL); |
d471ea57 | 5342 | } |
5a2468f5 | 5343 | |
0f71a2f6 | 5344 | static void |
fba45db2 | 5345 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5346 | { |
d696208f | 5347 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5348 | } |
5349 | ||
dc8acb97 MS |
5350 | /* Saved pointer to previous owner of the new_objfile event. */ |
5351 | static void (*remote_new_objfile_chain) (struct objfile *); | |
5352 | ||
5353 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
5354 | static void | |
5355 | remote_new_objfile (struct objfile *objfile) | |
5356 | { | |
5357 | if (remote_desc != 0) /* Have a remote connection */ | |
5358 | { | |
5359 | remote_check_symbols (objfile); | |
5360 | } | |
5361 | /* Call predecessor on chain, if any. */ | |
5362 | if (remote_new_objfile_chain != 0 && | |
5363 | remote_desc == 0) | |
5364 | remote_new_objfile_chain (objfile); | |
5365 | } | |
5366 | ||
c906108c | 5367 | void |
fba45db2 | 5368 | _initialize_remote (void) |
c906108c | 5369 | { |
5a2468f5 JM |
5370 | static struct cmd_list_element *remote_set_cmdlist; |
5371 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5372 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5373 | |
0f71a2f6 | 5374 | /* architecture specific data */ |
030f20e1 | 5375 | remote_gdbarch_data_handle = gdbarch_data_register_post_init (init_remote_state); |
d01949b6 AC |
5376 | |
5377 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5378 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5379 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5380 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5381 | |
c906108c SS |
5382 | init_remote_ops (); |
5383 | add_target (&remote_ops); | |
5384 | ||
5385 | init_extended_remote_ops (); | |
5386 | add_target (&extended_remote_ops); | |
cce74817 | 5387 | |
43ff13b4 JM |
5388 | init_remote_async_ops (); |
5389 | add_target (&remote_async_ops); | |
5390 | ||
5391 | init_extended_async_remote_ops (); | |
5392 | add_target (&extended_async_remote_ops); | |
5393 | ||
dc8acb97 | 5394 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5395 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5396 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5397 | |
c906108c SS |
5398 | #if 0 |
5399 | init_remote_threadtests (); | |
5400 | #endif | |
5401 | ||
d471ea57 AC |
5402 | /* set/show remote ... */ |
5403 | ||
5a2468f5 JM |
5404 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5405 | Remote protocol specific variables\n\ | |
5406 | Configure various remote-protocol specific variables such as\n\ | |
5407 | the packets being used", | |
cff3e48b | 5408 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5409 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5410 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5411 | Remote protocol specific variables\n\ |
5412 | Configure various remote-protocol specific variables such as\n\ | |
5413 | the packets being used", | |
cff3e48b | 5414 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5415 | 0/*allow-unknown*/, &showlist); |
5416 | ||
c5aa993b | 5417 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5418 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5419 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5420 | &cmdlist); |
5421 | ||
5422 | add_cmd ("packet", class_maintenance, packet_command, | |
5423 | "Send an arbitrary packet to a remote target.\n\ | |
5424 | maintenance packet TEXT\n\ | |
5425 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5426 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5427 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5428 | terminating `#' character and checksum.", | |
5429 | &maintenancelist); | |
5430 | ||
3b64bf98 AC |
5431 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, "\ |
5432 | Set whether to send break if interrupted.", "\ | |
5433 | Show whether to send break if interrupted.", "\ | |
5434 | If set, a break, instead of a cntrl-c, is sent to the remote target.", "\ | |
5435 | Whether to send break if interrupted is %s.", | |
e707bbc2 AC |
5436 | NULL, NULL, |
5437 | &setlist, &showlist); | |
c906108c | 5438 | |
11cf8741 JM |
5439 | /* Install commands for configuring memory read/write packets. */ |
5440 | ||
5441 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5442 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5443 | &setlist); | |
4ad5b0f7 | 5444 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5445 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5446 | &showlist); | |
5447 | add_cmd ("memory-write-packet-size", no_class, | |
5448 | set_memory_write_packet_size, | |
5449 | "Set the maximum number of bytes per memory-write packet.\n" | |
5450 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5451 | "default packet size. The actual limit is further reduced\n" | |
5452 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5453 | "further restriction and ``limit'' to enable that restriction\n", | |
5454 | &remote_set_cmdlist); | |
5455 | add_cmd ("memory-read-packet-size", no_class, | |
5456 | set_memory_read_packet_size, | |
5457 | "Set the maximum number of bytes per memory-read packet.\n" | |
5458 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5459 | "default packet size. The actual limit is further reduced\n" | |
5460 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5461 | "further restriction and ``limit'' to enable that restriction\n", | |
5462 | &remote_set_cmdlist); | |
5463 | add_cmd ("memory-write-packet-size", no_class, | |
5464 | show_memory_write_packet_size, | |
5465 | "Show the maximum number of bytes per memory-write packet.\n", | |
5466 | &remote_show_cmdlist); | |
5467 | add_cmd ("memory-read-packet-size", no_class, | |
5468 | show_memory_read_packet_size, | |
5469 | "Show the maximum number of bytes per memory-read packet.\n", | |
5470 | &remote_show_cmdlist); | |
c906108c | 5471 | |
501eef12 AC |
5472 | add_setshow_cmd ("hardware-watchpoint-limit", no_class, |
5473 | var_zinteger, &remote_hw_watchpoint_limit, "\ | |
3b64bf98 AC |
5474 | Set the maximum number of target hardware watchpoints.", "\ |
5475 | Show the maximum number of target hardware watchpoints.", "\ | |
501eef12 | 5476 | Specify a negative limit for unlimited.", "\ |
3b64bf98 | 5477 | The maximum number of target hardware watchpoints is %s.", |
501eef12 AC |
5478 | NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist); |
5479 | add_setshow_cmd ("hardware-breakpoint-limit", no_class, | |
5480 | var_zinteger, &remote_hw_breakpoint_limit, "\ | |
3b64bf98 AC |
5481 | Set the maximum number of target hardware breakpoints.", "\ |
5482 | Show the maximum number of target hardware breakpoints.", "\ | |
501eef12 | 5483 | Specify a negative limit for unlimited.", "\ |
3b64bf98 | 5484 | The maximum number of target hardware breakpoints is %s.", |
501eef12 AC |
5485 | NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist); |
5486 | ||
cb1a6d5f | 5487 | deprecated_add_show_from_set |
c906108c | 5488 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5489 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5490 | "Set the maximum size of the address (in bits) \ |
5491 | in a memory packet.\n", | |
5492 | &setlist), | |
c5aa993b | 5493 | &showlist); |
c906108c | 5494 | |
96baa820 JM |
5495 | add_packet_config_cmd (&remote_protocol_binary_download, |
5496 | "X", "binary-download", | |
5497 | set_remote_protocol_binary_download_cmd, | |
5498 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5499 | &remote_set_cmdlist, &remote_show_cmdlist, |
5500 | 1); | |
96baa820 JM |
5501 | #if 0 |
5502 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5503 | compatibility. */ | |
cb1a6d5f | 5504 | deprecated_add_show_from_set |
b83266a0 SS |
5505 | (add_set_cmd ("remotebinarydownload", no_class, |
5506 | var_boolean, (char *) &remote_binary_download, | |
5507 | "Set binary downloads.\n", &setlist), | |
5508 | &showlist); | |
96baa820 | 5509 | #endif |
0f71a2f6 | 5510 | |
506fb367 DJ |
5511 | add_packet_config_cmd (&remote_protocol_vcont, |
5512 | "vCont", "verbose-resume", | |
5513 | set_remote_protocol_vcont_packet_cmd, | |
5514 | show_remote_protocol_vcont_packet_cmd, | |
5515 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5516 | 0); | |
5517 | ||
dc8acb97 MS |
5518 | add_packet_config_cmd (&remote_protocol_qSymbol, |
5519 | "qSymbol", "symbol-lookup", | |
5520 | set_remote_protocol_qSymbol_packet_cmd, | |
5521 | show_remote_protocol_qSymbol_packet_cmd, | |
5522 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5523 | 0); | |
5524 | ||
d471ea57 AC |
5525 | add_packet_config_cmd (&remote_protocol_P, |
5526 | "P", "set-register", | |
5a2468f5 JM |
5527 | set_remote_protocol_P_packet_cmd, |
5528 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5529 | &remote_set_cmdlist, &remote_show_cmdlist, |
5530 | 1); | |
5531 | ||
5532 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
5533 | "Z0", "software-breakpoint", | |
5534 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5535 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5536 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5537 | 0); | |
5538 | ||
5539 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5540 | "Z1", "hardware-breakpoint", | |
5541 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5542 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5543 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5544 | 0); | |
5545 | ||
5546 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5547 | "Z2", "write-watchpoint", | |
5548 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5549 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5550 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5551 | 0); | |
5552 | ||
5553 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5554 | "Z3", "read-watchpoint", | |
5555 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5556 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5557 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5558 | 0); | |
5559 | ||
5560 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5561 | "Z4", "access-watchpoint", | |
5562 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5563 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5564 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5565 | 0); | |
5566 | ||
802188a7 RM |
5567 | add_packet_config_cmd (&remote_protocol_qPart_auxv, |
5568 | "qPart_auxv", "read-aux-vector", | |
5569 | set_remote_protocol_qPart_auxv_packet_cmd, | |
5570 | show_remote_protocol_qPart_auxv_packet_cmd, | |
5571 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5572 | 0); | |
5573 | ||
d471ea57 | 5574 | /* Keep the old ``set remote Z-packet ...'' working. */ |
e9e68a56 AC |
5575 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
5576 | &remote_Z_packet_detect, "\ | |
3b64bf98 AC |
5577 | Set use of remote protocol `Z' packets", "\ |
5578 | Show use of remote protocol `Z' packets ", "\ | |
5579 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ | |
5580 | packets.", "\ | |
5581 | Use of remote protocol `Z' packets is %s", | |
e9e68a56 AC |
5582 | set_remote_protocol_Z_packet_cmd, |
5583 | show_remote_protocol_Z_packet_cmd, | |
5584 | &remote_set_cmdlist, &remote_show_cmdlist); | |
449092f6 CV |
5585 | |
5586 | /* Eventually initialize fileio. See fileio.c */ | |
5587 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5588 | } |