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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 | 46 | |
43ff13b4 | 47 | #include "event-loop.h" |
c2c6d25f | 48 | #include "event-top.h" |
2acceee2 | 49 | #include "inf-loop.h" |
43ff13b4 | 50 | |
c906108c SS |
51 | #include <signal.h> |
52 | #include "serial.h" | |
53 | ||
6240bebf MS |
54 | #include "gdbcore.h" /* for exec_bfd */ |
55 | ||
449092f6 CV |
56 | #include "remote-fileio.h" |
57 | ||
c906108c | 58 | /* Prototypes for local functions */ |
6426a772 JM |
59 | static void cleanup_sigint_signal_handler (void *dummy); |
60 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 61 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 62 | |
a14ed312 KB |
63 | static void handle_remote_sigint (int); |
64 | static void handle_remote_sigint_twice (int); | |
65 | static void async_remote_interrupt (gdb_client_data); | |
66 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 67 | |
a14ed312 | 68 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 69 | |
a14ed312 | 70 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 71 | |
a14ed312 KB |
72 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
73 | int len, int should_write, | |
29e57380 | 74 | struct mem_attrib *attrib, |
a14ed312 | 75 | struct target_ops *target); |
c906108c | 76 | |
a14ed312 | 77 | static void remote_prepare_to_store (void); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_fetch_registers (int regno); |
c906108c | 80 | |
39f77062 KB |
81 | static void remote_resume (ptid_t ptid, int step, |
82 | enum target_signal siggnal); | |
83 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 84 | enum target_signal siggnal); |
36918e70 | 85 | static int remote_start_remote (struct ui_out *uiout, void *dummy); |
c906108c | 86 | |
a14ed312 KB |
87 | static void remote_open (char *name, int from_tty); |
88 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 89 | |
a14ed312 KB |
90 | static void extended_remote_open (char *name, int from_tty); |
91 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 92 | |
92d1e331 DJ |
93 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
94 | int async_p); | |
c906108c | 95 | |
a14ed312 | 96 | static void remote_close (int quitting); |
c906108c | 97 | |
a14ed312 | 98 | static void remote_store_registers (int regno); |
c906108c | 99 | |
a14ed312 KB |
100 | static void remote_mourn (void); |
101 | static void remote_async_mourn (void); | |
c906108c | 102 | |
a14ed312 | 103 | static void extended_remote_restart (void); |
c906108c | 104 | |
a14ed312 | 105 | static void extended_remote_mourn (void); |
c906108c | 106 | |
a14ed312 | 107 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 108 | |
c2d11a7d | 109 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 110 | |
a14ed312 | 111 | static int readchar (int timeout); |
c906108c | 112 | |
39f77062 KB |
113 | static ptid_t remote_wait (ptid_t ptid, |
114 | struct target_waitstatus *status); | |
115 | static ptid_t remote_async_wait (ptid_t ptid, | |
116 | struct target_waitstatus *status); | |
c906108c | 117 | |
a14ed312 KB |
118 | static void remote_kill (void); |
119 | static void remote_async_kill (void); | |
c906108c | 120 | |
a14ed312 | 121 | static int tohex (int nib); |
c906108c | 122 | |
a14ed312 | 123 | static void remote_detach (char *args, int from_tty); |
c906108c | 124 | |
a14ed312 | 125 | static void remote_interrupt (int signo); |
c906108c | 126 | |
a14ed312 | 127 | static void remote_interrupt_twice (int signo); |
7a292a7a | 128 | |
a14ed312 | 129 | static void interrupt_query (void); |
c906108c | 130 | |
a14ed312 | 131 | static void set_thread (int, int); |
c906108c | 132 | |
39f77062 | 133 | static int remote_thread_alive (ptid_t); |
c906108c | 134 | |
a14ed312 | 135 | static void get_offsets (void); |
c906108c | 136 | |
c2d11a7d | 137 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 138 | |
a14ed312 | 139 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 140 | |
a14ed312 | 141 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 142 | |
a14ed312 | 143 | static int hexnumlen (ULONGEST num); |
c906108c | 144 | |
a14ed312 | 145 | static void init_remote_ops (void); |
c906108c | 146 | |
a14ed312 | 147 | static void init_extended_remote_ops (void); |
c906108c | 148 | |
a14ed312 | 149 | static void remote_stop (void); |
c906108c | 150 | |
a14ed312 | 151 | static int ishex (int ch, int *val); |
c906108c | 152 | |
a14ed312 | 153 | static int stubhex (int ch); |
c906108c | 154 | |
a14ed312 | 155 | static int hexnumstr (char *, ULONGEST); |
c906108c | 156 | |
a14ed312 | 157 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 158 | |
a14ed312 | 159 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 160 | |
a14ed312 | 161 | static void print_packet (char *); |
c906108c | 162 | |
a14ed312 | 163 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 164 | |
a14ed312 | 165 | static void compare_sections_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void packet_command (char *, int); |
c906108c | 168 | |
a14ed312 | 169 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 170 | |
39f77062 | 171 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 172 | |
a14ed312 | 173 | static void remote_find_new_threads (void); |
c906108c | 174 | |
a14ed312 | 175 | static void record_currthread (int currthread); |
c906108c | 176 | |
30559e10 | 177 | static int fromhex (int a); |
c906108c | 178 | |
dc8acb97 | 179 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 180 | |
dc8acb97 | 181 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 182 | |
a14ed312 | 183 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 184 | |
a14ed312 | 185 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 186 | |
5a2468f5 | 187 | struct packet_config; |
5a2468f5 | 188 | |
a14ed312 | 189 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 190 | |
d471ea57 | 191 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 192 | |
a14ed312 | 193 | void _initialize_remote (void); |
c906108c | 194 | |
694f61fb | 195 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
196 | target is open()ed, remote.c should create a per-target description |
197 | of the remote protocol using that target's architecture. | |
ce2826aa | 198 | Unfortunately, the target stack doesn't include local state. For |
d01949b6 AC |
199 | the moment keep the information in the target's architecture |
200 | object. Sigh.. */ | |
201 | ||
ad10f812 AC |
202 | struct packet_reg |
203 | { | |
204 | long offset; /* Offset into G packet. */ | |
205 | long regnum; /* GDB's internal register number. */ | |
206 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 207 | int in_g_packet; /* Always part of G packet. */ |
3acba339 | 208 | /* long size in bytes; == register_size (current_gdbarch, regnum); at present. */ |
ad10f812 AC |
209 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
210 | }; | |
211 | ||
d01949b6 AC |
212 | struct remote_state |
213 | { | |
ad10f812 AC |
214 | /* Description of the remote protocol registers. */ |
215 | long sizeof_g_packet; | |
b323314b AC |
216 | |
217 | /* Description of the remote protocol registers indexed by REGNUM | |
218 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
219 | struct packet_reg *regs; | |
ad10f812 | 220 | |
d01949b6 AC |
221 | /* This is the size (in chars) of the first response to the ``g'' |
222 | packet. It is used as a heuristic when determining the maximum | |
223 | size of memory-read and memory-write packets. A target will | |
224 | typically only reserve a buffer large enough to hold the ``g'' | |
225 | packet. The size does not include packet overhead (headers and | |
226 | trailers). */ | |
227 | long actual_register_packet_size; | |
228 | ||
229 | /* This is the maximum size (in chars) of a non read/write packet. | |
230 | It is also used as a cap on the size of read/write packets. */ | |
231 | long remote_packet_size; | |
232 | }; | |
233 | ||
3c3bea1c | 234 | |
d01949b6 AC |
235 | /* Handle for retreving the remote protocol data from gdbarch. */ |
236 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
237 | ||
238 | static struct remote_state * | |
5ae5f592 | 239 | get_remote_state (void) |
d01949b6 | 240 | { |
451fbdda | 241 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
242 | } |
243 | ||
244 | static void * | |
245 | init_remote_state (struct gdbarch *gdbarch) | |
246 | { | |
247 | int regnum; | |
e5e78edc | 248 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state); |
d01949b6 | 249 | |
f42accbe AC |
250 | if (deprecated_register_bytes () != 0) |
251 | rs->sizeof_g_packet = deprecated_register_bytes (); | |
7d58c67d TR |
252 | else |
253 | rs->sizeof_g_packet = 0; | |
ad10f812 | 254 | |
b323314b | 255 | /* Assume a 1:1 regnum<->pnum table. */ |
e5e78edc AC |
256 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
257 | struct packet_reg); | |
b323314b | 258 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 259 | { |
b323314b AC |
260 | struct packet_reg *r = &rs->regs[regnum]; |
261 | r->pnum = regnum; | |
262 | r->regnum = regnum; | |
62700349 | 263 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 264 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 265 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d TR |
266 | |
267 | /* Compute packet size by accumulating the size of all registers. */ | |
f42accbe | 268 | if (deprecated_register_bytes () == 0) |
7d58c67d | 269 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); |
ad10f812 AC |
270 | } |
271 | ||
d01949b6 AC |
272 | /* Default maximum number of characters in a packet body. Many |
273 | remote stubs have a hardwired buffer size of 400 bytes | |
274 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
275 | as the maximum packet-size to ensure that the packet and an extra | |
276 | NUL character can always fit in the buffer. This stops GDB | |
277 | trashing stubs that try to squeeze an extra NUL into what is | |
278 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
279 | rs->remote_packet_size = 400 - 1; | |
280 | ||
ad10f812 AC |
281 | /* Should rs->sizeof_g_packet needs more space than the |
282 | default, adjust the size accordingly. Remember that each byte is | |
283 | encoded as two characters. 32 is the overhead for the packet | |
284 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 AC |
285 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
286 | little. */ | |
ad10f812 AC |
287 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
288 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
802188a7 | 289 | |
d01949b6 AC |
290 | /* This one is filled in when a ``g'' packet is received. */ |
291 | rs->actual_register_packet_size = 0; | |
292 | ||
293 | return rs; | |
294 | } | |
295 | ||
ad10f812 AC |
296 | static struct packet_reg * |
297 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
298 | { | |
b323314b AC |
299 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
300 | return NULL; | |
301 | else | |
ad10f812 | 302 | { |
b323314b AC |
303 | struct packet_reg *r = &rs->regs[regnum]; |
304 | gdb_assert (r->regnum == regnum); | |
305 | return r; | |
ad10f812 | 306 | } |
ad10f812 AC |
307 | } |
308 | ||
309 | static struct packet_reg * | |
310 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
311 | { | |
b323314b AC |
312 | int i; |
313 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 314 | { |
b323314b AC |
315 | struct packet_reg *r = &rs->regs[i]; |
316 | if (r->pnum == pnum) | |
317 | return r; | |
ad10f812 AC |
318 | } |
319 | return NULL; | |
d01949b6 AC |
320 | } |
321 | ||
3c3bea1c GS |
322 | /* FIXME: graces/2002-08-08: These variables should eventually be |
323 | bound to an instance of the target object (as in gdbarch-tdep()), | |
324 | when such a thing exists. */ | |
325 | ||
326 | /* This is set to the data address of the access causing the target | |
327 | to stop for a watchpoint. */ | |
328 | static CORE_ADDR remote_watch_data_address; | |
329 | ||
330 | /* This is non-zero if taregt stopped for a watchpoint. */ | |
331 | static int remote_stopped_by_watchpoint_p; | |
332 | ||
c906108c SS |
333 | |
334 | static struct target_ops remote_ops; | |
335 | ||
336 | static struct target_ops extended_remote_ops; | |
337 | ||
43ff13b4 JM |
338 | /* Temporary target ops. Just like the remote_ops and |
339 | extended_remote_ops, but with asynchronous support. */ | |
340 | static struct target_ops remote_async_ops; | |
341 | ||
342 | static struct target_ops extended_async_remote_ops; | |
343 | ||
6426a772 JM |
344 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
345 | ``forever'' still use the normal timeout mechanism. This is | |
346 | currently used by the ASYNC code to guarentee that target reads | |
347 | during the initial connect always time-out. Once getpkt has been | |
348 | modified to return a timeout indication and, in turn | |
349 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
350 | this can go away. */ | |
351 | static int wait_forever_enabled_p = 1; | |
352 | ||
353 | ||
c906108c SS |
354 | /* This variable chooses whether to send a ^C or a break when the user |
355 | requests program interruption. Although ^C is usually what remote | |
356 | systems expect, and that is the default here, sometimes a break is | |
357 | preferable instead. */ | |
358 | ||
359 | static int remote_break; | |
360 | ||
c906108c SS |
361 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
362 | remote_open knows that we don't have a file open when the program | |
363 | starts. */ | |
819cc324 | 364 | static struct serial *remote_desc = NULL; |
c906108c | 365 | |
c906108c SS |
366 | /* This variable sets the number of bits in an address that are to be |
367 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
368 | leading zeros, the entire address would be sent. This variable | |
369 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
370 | initial implementation of remote.c restricted the address sent in | |
371 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
372 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
373 | address was never sent. Since fixing this bug may cause a break in | |
374 | some remote targets this variable is principly provided to | |
375 | facilitate backward compatibility. */ | |
376 | ||
377 | static int remote_address_size; | |
378 | ||
6426a772 JM |
379 | /* Tempoary to track who currently owns the terminal. See |
380 | target_async_terminal_* for more details. */ | |
381 | ||
382 | static int remote_async_terminal_ours_p; | |
383 | ||
11cf8741 | 384 | \f |
11cf8741 | 385 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
386 | memory read/write packet. MIN ((rs->remote_packet_size), |
387 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
388 | values (fifo overruns, et.al.) and some users need larger values | |
389 | (speed up transfers). The variables ``preferred_*'' (the user | |
390 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
391 | (Positive - a soft limit, negative - a hard limit). */ | |
11cf8741 JM |
392 | |
393 | struct memory_packet_config | |
394 | { | |
395 | char *name; | |
396 | long size; | |
397 | int fixed_p; | |
398 | }; | |
399 | ||
400 | /* Compute the current size of a read/write packet. Since this makes | |
401 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
402 | ||
403 | static long | |
404 | get_memory_packet_size (struct memory_packet_config *config) | |
405 | { | |
d01949b6 | 406 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
407 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
408 | law?) that some hosts don't cope very well with large alloca() | |
409 | calls. Eventually the alloca() code will be replaced by calls to | |
410 | xmalloc() and make_cleanups() allowing this restriction to either | |
411 | be lifted or removed. */ | |
412 | #ifndef MAX_REMOTE_PACKET_SIZE | |
413 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
414 | #endif | |
415 | /* NOTE: 16 is just chosen at random. */ | |
416 | #ifndef MIN_REMOTE_PACKET_SIZE | |
417 | #define MIN_REMOTE_PACKET_SIZE 16 | |
418 | #endif | |
419 | long what_they_get; | |
420 | if (config->fixed_p) | |
421 | { | |
422 | if (config->size <= 0) | |
423 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
424 | else | |
425 | what_they_get = config->size; | |
426 | } | |
427 | else | |
428 | { | |
d01949b6 | 429 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
430 | /* Limit the packet to the size specified by the user. */ |
431 | if (config->size > 0 | |
432 | && what_they_get > config->size) | |
433 | what_they_get = config->size; | |
434 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
435 | if ((rs->actual_register_packet_size) > 0 |
436 | && what_they_get > (rs->actual_register_packet_size)) | |
437 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
438 | } |
439 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
440 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
441 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
442 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
443 | return what_they_get; | |
444 | } | |
445 | ||
446 | /* Update the size of a read/write packet. If they user wants | |
447 | something really big then do a sanity check. */ | |
448 | ||
449 | static void | |
450 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
451 | { | |
452 | int fixed_p = config->fixed_p; | |
453 | long size = config->size; | |
454 | if (args == NULL) | |
455 | error ("Argument required (integer, `fixed' or `limited')."); | |
456 | else if (strcmp (args, "hard") == 0 | |
457 | || strcmp (args, "fixed") == 0) | |
458 | fixed_p = 1; | |
459 | else if (strcmp (args, "soft") == 0 | |
460 | || strcmp (args, "limit") == 0) | |
461 | fixed_p = 0; | |
462 | else | |
463 | { | |
464 | char *end; | |
465 | size = strtoul (args, &end, 0); | |
466 | if (args == end) | |
467 | error ("Invalid %s (bad syntax).", config->name); | |
468 | #if 0 | |
469 | /* Instead of explicitly capping the size of a packet to | |
470 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
471 | instead allowed to set the size to something arbitrarily | |
472 | large. */ | |
473 | if (size > MAX_REMOTE_PACKET_SIZE) | |
474 | error ("Invalid %s (too large).", config->name); | |
475 | #endif | |
476 | } | |
477 | /* Extra checks? */ | |
478 | if (fixed_p && !config->fixed_p) | |
479 | { | |
480 | if (! query ("The target may not be able to correctly handle a %s\n" | |
481 | "of %ld bytes. Change the packet size? ", | |
482 | config->name, size)) | |
483 | error ("Packet size not changed."); | |
484 | } | |
485 | /* Update the config. */ | |
486 | config->fixed_p = fixed_p; | |
487 | config->size = size; | |
488 | } | |
489 | ||
490 | static void | |
491 | show_memory_packet_size (struct memory_packet_config *config) | |
492 | { | |
493 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
494 | if (config->fixed_p) | |
495 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
496 | get_memory_packet_size (config)); | |
497 | else | |
498 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
499 | get_memory_packet_size (config)); | |
500 | } | |
501 | ||
502 | static struct memory_packet_config memory_write_packet_config = | |
503 | { | |
504 | "memory-write-packet-size", | |
505 | }; | |
506 | ||
507 | static void | |
508 | set_memory_write_packet_size (char *args, int from_tty) | |
509 | { | |
510 | set_memory_packet_size (args, &memory_write_packet_config); | |
511 | } | |
512 | ||
513 | static void | |
514 | show_memory_write_packet_size (char *args, int from_tty) | |
515 | { | |
516 | show_memory_packet_size (&memory_write_packet_config); | |
517 | } | |
518 | ||
519 | static long | |
520 | get_memory_write_packet_size (void) | |
521 | { | |
522 | return get_memory_packet_size (&memory_write_packet_config); | |
523 | } | |
524 | ||
525 | static struct memory_packet_config memory_read_packet_config = | |
526 | { | |
527 | "memory-read-packet-size", | |
528 | }; | |
529 | ||
530 | static void | |
531 | set_memory_read_packet_size (char *args, int from_tty) | |
532 | { | |
533 | set_memory_packet_size (args, &memory_read_packet_config); | |
534 | } | |
535 | ||
536 | static void | |
537 | show_memory_read_packet_size (char *args, int from_tty) | |
538 | { | |
539 | show_memory_packet_size (&memory_read_packet_config); | |
540 | } | |
541 | ||
542 | static long | |
543 | get_memory_read_packet_size (void) | |
544 | { | |
d01949b6 | 545 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
546 | long size = get_memory_packet_size (&memory_read_packet_config); |
547 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
548 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
549 | increased beyond (rs->remote_packet_size). */ |
550 | if (size > (rs->remote_packet_size)) | |
551 | size = (rs->remote_packet_size); | |
11cf8741 JM |
552 | return size; |
553 | } | |
554 | ||
11cf8741 | 555 | \f |
5a2468f5 JM |
556 | /* Generic configuration support for packets the stub optionally |
557 | supports. Allows the user to specify the use of the packet as well | |
558 | as allowing GDB to auto-detect support in the remote stub. */ | |
559 | ||
560 | enum packet_support | |
561 | { | |
562 | PACKET_SUPPORT_UNKNOWN = 0, | |
563 | PACKET_ENABLE, | |
564 | PACKET_DISABLE | |
565 | }; | |
566 | ||
5a2468f5 JM |
567 | struct packet_config |
568 | { | |
5a2468f5 JM |
569 | char *name; |
570 | char *title; | |
7f19b9a2 | 571 | enum auto_boolean detect; |
5a2468f5 JM |
572 | enum packet_support support; |
573 | }; | |
574 | ||
d471ea57 AC |
575 | /* Analyze a packet's return value and update the packet config |
576 | accordingly. */ | |
577 | ||
578 | enum packet_result | |
579 | { | |
580 | PACKET_ERROR, | |
581 | PACKET_OK, | |
582 | PACKET_UNKNOWN | |
583 | }; | |
584 | ||
5a2468f5 | 585 | static void |
d471ea57 | 586 | update_packet_config (struct packet_config *config) |
5a2468f5 | 587 | { |
d471ea57 AC |
588 | switch (config->detect) |
589 | { | |
7f19b9a2 | 590 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
591 | config->support = PACKET_ENABLE; |
592 | break; | |
7f19b9a2 | 593 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
594 | config->support = PACKET_DISABLE; |
595 | break; | |
7f19b9a2 | 596 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
597 | config->support = PACKET_SUPPORT_UNKNOWN; |
598 | break; | |
599 | } | |
5a2468f5 JM |
600 | } |
601 | ||
602 | static void | |
fba45db2 | 603 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
604 | { |
605 | char *support = "internal-error"; | |
606 | switch (config->support) | |
607 | { | |
608 | case PACKET_ENABLE: | |
609 | support = "enabled"; | |
610 | break; | |
611 | case PACKET_DISABLE: | |
612 | support = "disabled"; | |
613 | break; | |
614 | case PACKET_SUPPORT_UNKNOWN: | |
615 | support = "unknown"; | |
616 | break; | |
617 | } | |
618 | switch (config->detect) | |
619 | { | |
7f19b9a2 | 620 | case AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
621 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
622 | config->name, config->title, support); | |
623 | break; | |
7f19b9a2 AC |
624 | case AUTO_BOOLEAN_TRUE: |
625 | case AUTO_BOOLEAN_FALSE: | |
8e248173 | 626 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", |
5a2468f5 | 627 | config->name, config->title, support); |
8e248173 | 628 | break; |
5a2468f5 JM |
629 | } |
630 | } | |
631 | ||
632 | static void | |
d471ea57 AC |
633 | add_packet_config_cmd (struct packet_config *config, |
634 | char *name, | |
635 | char *title, | |
e9e68a56 AC |
636 | cmd_sfunc_ftype *set_func, |
637 | cmd_sfunc_ftype *show_func, | |
d471ea57 AC |
638 | struct cmd_list_element **set_remote_list, |
639 | struct cmd_list_element **show_remote_list, | |
640 | int legacy) | |
641 | { | |
642 | struct cmd_list_element *set_cmd; | |
643 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
644 | char *set_doc; |
645 | char *show_doc; | |
3b64bf98 AC |
646 | char *help_doc; |
647 | char *print; | |
d471ea57 | 648 | char *cmd_name; |
5a2468f5 JM |
649 | config->name = name; |
650 | config->title = title; | |
7f19b9a2 | 651 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 652 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
653 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
654 | name, title); | |
655 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
656 | name, title); | |
3b64bf98 AC |
657 | print = xstrprintf ("Current use of remote protocol `%s' (%s) is %%s", |
658 | name, title); | |
d471ea57 | 659 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 660 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 AC |
661 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
662 | &config->detect, set_doc, show_doc, | |
3b64bf98 | 663 | "", print, |
e9e68a56 AC |
664 | set_func, show_func, |
665 | set_remote_list, show_remote_list); | |
d471ea57 AC |
666 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ |
667 | if (legacy) | |
668 | { | |
669 | char *legacy_name; | |
b435e160 | 670 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
671 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
672 | set_remote_list); | |
673 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
674 | show_remote_list); | |
675 | } | |
5a2468f5 JM |
676 | } |
677 | ||
d471ea57 AC |
678 | static enum packet_result |
679 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 680 | { |
d471ea57 | 681 | if (buf[0] != '\0') |
5a2468f5 | 682 | { |
d471ea57 AC |
683 | /* The stub recognized the packet request. Check that the |
684 | operation succeeded. */ | |
685 | switch (config->support) | |
686 | { | |
687 | case PACKET_SUPPORT_UNKNOWN: | |
688 | if (remote_debug) | |
689 | fprintf_unfiltered (gdb_stdlog, | |
690 | "Packet %s (%s) is supported\n", | |
691 | config->name, config->title); | |
692 | config->support = PACKET_ENABLE; | |
693 | break; | |
694 | case PACKET_DISABLE: | |
8e65ff28 AC |
695 | internal_error (__FILE__, __LINE__, |
696 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
697 | break; |
698 | case PACKET_ENABLE: | |
699 | break; | |
700 | } | |
701 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
702 | /* "OK" - definitly OK. */ | |
703 | return PACKET_OK; | |
704 | if (buf[0] == 'E' | |
705 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
706 | && buf[3] == '\0') | |
707 | /* "Enn" - definitly an error. */ | |
708 | return PACKET_ERROR; | |
709 | /* The packet may or may not be OK. Just assume it is */ | |
710 | return PACKET_OK; | |
711 | } | |
712 | else | |
713 | { | |
714 | /* The stub does not support the packet. */ | |
715 | switch (config->support) | |
716 | { | |
717 | case PACKET_ENABLE: | |
7f19b9a2 | 718 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 AC |
719 | /* If the stub previously indicated that the packet was |
720 | supported then there is a protocol error.. */ | |
721 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
722 | config->name, config->title); | |
723 | else | |
724 | /* The user set it wrong. */ | |
725 | error ("Enabled packet %s (%s) not recognized by stub", | |
726 | config->name, config->title); | |
727 | break; | |
728 | case PACKET_SUPPORT_UNKNOWN: | |
729 | if (remote_debug) | |
730 | fprintf_unfiltered (gdb_stdlog, | |
731 | "Packet %s (%s) is NOT supported\n", | |
732 | config->name, config->title); | |
733 | config->support = PACKET_DISABLE; | |
734 | break; | |
735 | case PACKET_DISABLE: | |
736 | break; | |
737 | } | |
738 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
739 | } |
740 | } | |
741 | ||
506fb367 DJ |
742 | /* Should we try the 'vCont' (descriptive resume) request? */ |
743 | static struct packet_config remote_protocol_vcont; | |
744 | ||
745 | static void | |
746 | set_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
747 | struct cmd_list_element *c) | |
748 | { | |
749 | update_packet_config (&remote_protocol_vcont); | |
750 | } | |
751 | ||
752 | static void | |
753 | show_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
754 | struct cmd_list_element *c) | |
755 | { | |
756 | show_packet_config_cmd (&remote_protocol_vcont); | |
757 | } | |
758 | ||
dc8acb97 MS |
759 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
760 | static struct packet_config remote_protocol_qSymbol; | |
761 | ||
762 | static void | |
763 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
764 | struct cmd_list_element *c) | |
765 | { | |
766 | update_packet_config (&remote_protocol_qSymbol); | |
767 | } | |
768 | ||
769 | static void | |
e9e68a56 AC |
770 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, |
771 | struct cmd_list_element *c) | |
dc8acb97 MS |
772 | { |
773 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
774 | } | |
775 | ||
5a2468f5 JM |
776 | /* Should we try the 'P' (set register) request? */ |
777 | ||
778 | static struct packet_config remote_protocol_P; | |
779 | ||
780 | static void | |
fba45db2 KB |
781 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
782 | struct cmd_list_element *c) | |
5a2468f5 | 783 | { |
d471ea57 | 784 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
785 | } |
786 | ||
787 | static void | |
e9e68a56 AC |
788 | show_remote_protocol_P_packet_cmd (char *args, int from_tty, |
789 | struct cmd_list_element *c) | |
5a2468f5 JM |
790 | { |
791 | show_packet_config_cmd (&remote_protocol_P); | |
792 | } | |
793 | ||
d471ea57 AC |
794 | /* Should we try one of the 'Z' requests? */ |
795 | ||
796 | enum Z_packet_type | |
797 | { | |
798 | Z_PACKET_SOFTWARE_BP, | |
799 | Z_PACKET_HARDWARE_BP, | |
800 | Z_PACKET_WRITE_WP, | |
801 | Z_PACKET_READ_WP, | |
802 | Z_PACKET_ACCESS_WP, | |
803 | NR_Z_PACKET_TYPES | |
804 | }; | |
96baa820 | 805 | |
d471ea57 AC |
806 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
807 | ||
808 | /* FIXME: Instead of having all these boiler plate functions, the | |
809 | command callback should include a context argument. */ | |
810 | ||
811 | static void | |
812 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
813 | struct cmd_list_element *c) | |
814 | { | |
815 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
816 | } | |
817 | ||
818 | static void | |
e9e68a56 AC |
819 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, |
820 | struct cmd_list_element *c) | |
d471ea57 AC |
821 | { |
822 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
823 | } | |
824 | ||
825 | static void | |
826 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
827 | struct cmd_list_element *c) | |
828 | { | |
829 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
830 | } | |
831 | ||
832 | static void | |
e9e68a56 AC |
833 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, |
834 | struct cmd_list_element *c) | |
d471ea57 AC |
835 | { |
836 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
837 | } | |
838 | ||
839 | static void | |
840 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
841 | struct cmd_list_element *c) | |
842 | { | |
843 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
844 | } | |
845 | ||
846 | static void | |
e9e68a56 AC |
847 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, |
848 | struct cmd_list_element *c) | |
d471ea57 AC |
849 | { |
850 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
851 | } | |
852 | ||
853 | static void | |
854 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
855 | struct cmd_list_element *c) | |
856 | { | |
857 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
858 | } | |
859 | ||
860 | static void | |
e9e68a56 AC |
861 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, |
862 | struct cmd_list_element *c) | |
d471ea57 AC |
863 | { |
864 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
865 | } | |
866 | ||
867 | static void | |
868 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
869 | struct cmd_list_element *c) | |
870 | { | |
871 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
872 | } | |
873 | ||
874 | static void | |
e9e68a56 AC |
875 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, |
876 | struct cmd_list_element *c) | |
d471ea57 AC |
877 | { |
878 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
879 | } | |
880 | ||
881 | /* For compatibility with older distributions. Provide a ``set remote | |
882 | Z-packet ...'' command that updates all the Z packet types. */ | |
883 | ||
7f19b9a2 | 884 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
885 | |
886 | static void | |
fba45db2 KB |
887 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
888 | struct cmd_list_element *c) | |
96baa820 | 889 | { |
d471ea57 AC |
890 | int i; |
891 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
892 | { | |
893 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
894 | update_packet_config (&remote_protocol_Z[i]); | |
895 | } | |
96baa820 JM |
896 | } |
897 | ||
898 | static void | |
e9e68a56 AC |
899 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
900 | struct cmd_list_element *c) | |
96baa820 | 901 | { |
d471ea57 AC |
902 | int i; |
903 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
904 | { | |
905 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
906 | } | |
96baa820 JM |
907 | } |
908 | ||
909 | /* Should we try the 'X' (remote binary download) packet? | |
910 | ||
911 | This variable (available to the user via "set remote X-packet") | |
912 | dictates whether downloads are sent in binary (via the 'X' packet). | |
913 | We assume that the stub can, and attempt to do it. This will be | |
914 | cleared if the stub does not understand it. This switch is still | |
915 | needed, though in cases when the packet is supported in the stub, | |
916 | but the connection does not allow it (i.e., 7-bit serial connection | |
917 | only). */ | |
918 | ||
919 | static struct packet_config remote_protocol_binary_download; | |
920 | ||
9d1f7ab2 MS |
921 | /* Should we try the 'ThreadInfo' query packet? |
922 | ||
923 | This variable (NOT available to the user: auto-detect only!) | |
924 | determines whether GDB will use the new, simpler "ThreadInfo" | |
925 | query or the older, more complex syntax for thread queries. | |
802188a7 | 926 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
927 | and set to false when the target fails to recognize it). */ |
928 | ||
929 | static int use_threadinfo_query; | |
930 | static int use_threadextra_query; | |
931 | ||
96baa820 JM |
932 | static void |
933 | set_remote_protocol_binary_download_cmd (char *args, | |
934 | int from_tty, | |
935 | struct cmd_list_element *c) | |
936 | { | |
d471ea57 | 937 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
938 | } |
939 | ||
940 | static void | |
e9e68a56 AC |
941 | show_remote_protocol_binary_download_cmd (char *args, int from_tty, |
942 | struct cmd_list_element *c) | |
96baa820 JM |
943 | { |
944 | show_packet_config_cmd (&remote_protocol_binary_download); | |
945 | } | |
946 | ||
802188a7 RM |
947 | /* Should we try the 'qPart:auxv' (target auxiliary vector read) request? */ |
948 | static struct packet_config remote_protocol_qPart_auxv; | |
949 | ||
950 | static void | |
951 | set_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
952 | struct cmd_list_element *c) | |
953 | { | |
954 | update_packet_config (&remote_protocol_qPart_auxv); | |
955 | } | |
956 | ||
957 | static void | |
958 | show_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
959 | struct cmd_list_element *c) | |
960 | { | |
961 | show_packet_config_cmd (&remote_protocol_qPart_auxv); | |
962 | } | |
963 | ||
b96ec7ac AC |
964 | static struct packet_config remote_protocol_p; |
965 | ||
966 | static void | |
967 | set_remote_protocol_p_packet_cmd (char *args, int from_tty, | |
968 | struct cmd_list_element *c) | |
969 | { | |
970 | update_packet_config (&remote_protocol_p); | |
971 | } | |
972 | ||
973 | static void | |
974 | show_remote_protocol_p_packet_cmd (char *args, int from_tty, | |
975 | struct cmd_list_element *c) | |
976 | { | |
977 | show_packet_config_cmd (&remote_protocol_p); | |
978 | } | |
979 | ||
980 | ||
c906108c | 981 | |
43ff13b4 | 982 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
ae44c0c4 AC |
983 | static void *sigint_remote_twice_token; |
984 | static void *sigint_remote_token; | |
43ff13b4 | 985 | |
c906108c SS |
986 | /* These are pointers to hook functions that may be set in order to |
987 | modify resume/wait behavior for a particular architecture. */ | |
988 | ||
9a4105ab AC |
989 | void (*deprecated_target_resume_hook) (void); |
990 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
991 | \f |
992 | ||
c5aa993b | 993 | |
c906108c SS |
994 | /* These are the threads which we last sent to the remote system. |
995 | -1 for all or -2 for not sent yet. */ | |
996 | static int general_thread; | |
cce74817 | 997 | static int continue_thread; |
c906108c SS |
998 | |
999 | /* Call this function as a result of | |
1000 | 1) A halt indication (T packet) containing a thread id | |
1001 | 2) A direct query of currthread | |
1002 | 3) Successful execution of set thread | |
1003 | */ | |
1004 | ||
1005 | static void | |
fba45db2 | 1006 | record_currthread (int currthread) |
c906108c | 1007 | { |
c906108c | 1008 | general_thread = currthread; |
cce74817 | 1009 | |
c906108c SS |
1010 | /* If this is a new thread, add it to GDB's thread list. |
1011 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1012 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1013 | { |
39f77062 | 1014 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1015 | ui_out_text (uiout, "[New "); |
39f77062 | 1016 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1017 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1018 | } |
c906108c SS |
1019 | } |
1020 | ||
1021 | #define MAGIC_NULL_PID 42000 | |
1022 | ||
1023 | static void | |
fba45db2 | 1024 | set_thread (int th, int gen) |
c906108c | 1025 | { |
d01949b6 AC |
1026 | struct remote_state *rs = get_remote_state (); |
1027 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1028 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1029 | |
1030 | if (state == th) | |
1031 | return; | |
1032 | ||
1033 | buf[0] = 'H'; | |
1034 | buf[1] = gen ? 'g' : 'c'; | |
1035 | if (th == MAGIC_NULL_PID) | |
1036 | { | |
1037 | buf[2] = '0'; | |
1038 | buf[3] = '\0'; | |
1039 | } | |
1040 | else if (th < 0) | |
1041 | sprintf (&buf[2], "-%x", -th); | |
1042 | else | |
1043 | sprintf (&buf[2], "%x", th); | |
1044 | putpkt (buf); | |
d01949b6 | 1045 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1046 | if (gen) |
c5aa993b | 1047 | general_thread = th; |
c906108c | 1048 | else |
cce74817 | 1049 | continue_thread = th; |
c906108c SS |
1050 | } |
1051 | \f | |
1052 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1053 | ||
1054 | static int | |
39f77062 | 1055 | remote_thread_alive (ptid_t ptid) |
c906108c | 1056 | { |
39f77062 | 1057 | int tid = PIDGET (ptid); |
cce74817 | 1058 | char buf[16]; |
c906108c | 1059 | |
cce74817 JM |
1060 | if (tid < 0) |
1061 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1062 | else |
cce74817 | 1063 | sprintf (buf, "T%08x", tid); |
c906108c | 1064 | putpkt (buf); |
c2d11a7d | 1065 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1066 | return (buf[0] == 'O' && buf[1] == 'K'); |
1067 | } | |
1068 | ||
1069 | /* About these extended threadlist and threadinfo packets. They are | |
1070 | variable length packets but, the fields within them are often fixed | |
1071 | length. They are redundent enough to send over UDP as is the | |
1072 | remote protocol in general. There is a matching unit test module | |
1073 | in libstub. */ | |
1074 | ||
cce74817 JM |
1075 | #define OPAQUETHREADBYTES 8 |
1076 | ||
1077 | /* a 64 bit opaque identifier */ | |
1078 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1079 | ||
1080 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1081 | protocol encoding, and remote.c. it is not particularly changable */ | |
1082 | ||
1083 | /* Right now, the internal structure is int. We want it to be bigger. | |
1084 | Plan to fix this. | |
c5aa993b | 1085 | */ |
cce74817 | 1086 | |
c5aa993b | 1087 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1088 | |
9d1f7ab2 | 1089 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1090 | equivalint to the reply of the remote threadinfo packet */ |
1091 | ||
1092 | struct gdb_ext_thread_info | |
c5aa993b JM |
1093 | { |
1094 | threadref threadid; /* External form of thread reference */ | |
1095 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1096 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1097 | char shortname[32]; /* To be used to name threads */ | |
1098 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1099 | }; | |
cce74817 JM |
1100 | |
1101 | /* The volume of remote transfers can be limited by submitting | |
1102 | a mask containing bits specifying the desired information. | |
1103 | Use a union of these values as the 'selection' parameter to | |
1104 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1105 | */ |
cce74817 JM |
1106 | |
1107 | #define TAG_THREADID 1 | |
1108 | #define TAG_EXISTS 2 | |
1109 | #define TAG_DISPLAY 4 | |
1110 | #define TAG_THREADNAME 8 | |
c5aa993b | 1111 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1112 | |
c906108c SS |
1113 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1114 | ||
b2dd6311 | 1115 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1116 | |
a14ed312 | 1117 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1118 | |
a14ed312 | 1119 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1120 | |
a14ed312 | 1121 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1122 | |
a14ed312 | 1123 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1124 | |
a14ed312 | 1125 | static char *pack_int (char *buf, int value); |
cce74817 | 1126 | |
a14ed312 | 1127 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1128 | |
a14ed312 | 1129 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1130 | |
a14ed312 | 1131 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1132 | |
a14ed312 | 1133 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1134 | |
a14ed312 | 1135 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1136 | |
a14ed312 | 1137 | static int threadref_to_int (threadref * ref); |
cce74817 | 1138 | |
a14ed312 | 1139 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1140 | |
a14ed312 | 1141 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1142 | |
a14ed312 | 1143 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1144 | |
a14ed312 KB |
1145 | static int remote_unpack_thread_info_response (char *pkt, |
1146 | threadref * expectedref, | |
1147 | struct gdb_ext_thread_info | |
1148 | *info); | |
cce74817 JM |
1149 | |
1150 | ||
a14ed312 KB |
1151 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1152 | struct gdb_ext_thread_info *info); | |
cce74817 | 1153 | |
a14ed312 KB |
1154 | static char *pack_threadlist_request (char *pkt, int startflag, |
1155 | int threadcount, | |
1156 | threadref * nextthread); | |
cce74817 | 1157 | |
a14ed312 KB |
1158 | static int parse_threadlist_response (char *pkt, |
1159 | int result_limit, | |
1160 | threadref * original_echo, | |
1161 | threadref * resultlist, int *doneflag); | |
cce74817 | 1162 | |
a14ed312 KB |
1163 | static int remote_get_threadlist (int startflag, |
1164 | threadref * nextthread, | |
1165 | int result_limit, | |
1166 | int *done, | |
1167 | int *result_count, threadref * threadlist); | |
cce74817 | 1168 | |
c5aa993b | 1169 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1170 | |
a14ed312 KB |
1171 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1172 | void *context, int looplimit); | |
cce74817 | 1173 | |
a14ed312 | 1174 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1175 | |
c906108c SS |
1176 | /* encode 64 bits in 16 chars of hex */ |
1177 | ||
1178 | static const char hexchars[] = "0123456789abcdef"; | |
1179 | ||
1180 | static int | |
fba45db2 | 1181 | ishex (int ch, int *val) |
c906108c SS |
1182 | { |
1183 | if ((ch >= 'a') && (ch <= 'f')) | |
1184 | { | |
1185 | *val = ch - 'a' + 10; | |
1186 | return 1; | |
1187 | } | |
1188 | if ((ch >= 'A') && (ch <= 'F')) | |
1189 | { | |
1190 | *val = ch - 'A' + 10; | |
1191 | return 1; | |
1192 | } | |
1193 | if ((ch >= '0') && (ch <= '9')) | |
1194 | { | |
1195 | *val = ch - '0'; | |
1196 | return 1; | |
1197 | } | |
1198 | return 0; | |
1199 | } | |
1200 | ||
1201 | static int | |
fba45db2 | 1202 | stubhex (int ch) |
c906108c SS |
1203 | { |
1204 | if (ch >= 'a' && ch <= 'f') | |
1205 | return ch - 'a' + 10; | |
1206 | if (ch >= '0' && ch <= '9') | |
1207 | return ch - '0'; | |
1208 | if (ch >= 'A' && ch <= 'F') | |
1209 | return ch - 'A' + 10; | |
1210 | return -1; | |
1211 | } | |
1212 | ||
1213 | static int | |
fba45db2 | 1214 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1215 | { |
1216 | int nibble; | |
1217 | int retval = 0; | |
1218 | ||
1219 | while (fieldlength) | |
1220 | { | |
1221 | nibble = stubhex (*buff++); | |
1222 | retval |= nibble; | |
1223 | fieldlength--; | |
1224 | if (fieldlength) | |
1225 | retval = retval << 4; | |
1226 | } | |
1227 | return retval; | |
1228 | } | |
1229 | ||
1230 | char * | |
fba45db2 | 1231 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1232 | ULONGEST *result) |
c906108c SS |
1233 | { |
1234 | int nibble; | |
1235 | int retval = 0; | |
1236 | ||
1237 | while (ishex (*buff, &nibble)) | |
1238 | { | |
1239 | buff++; | |
1240 | retval = retval << 4; | |
1241 | retval |= nibble & 0x0f; | |
1242 | } | |
1243 | *result = retval; | |
1244 | return buff; | |
1245 | } | |
1246 | ||
1247 | static char * | |
fba45db2 | 1248 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1249 | { |
1250 | ishex (*buf++, val); | |
1251 | return buf; | |
1252 | } | |
1253 | ||
1254 | static char * | |
fba45db2 | 1255 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1256 | { |
1257 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1258 | return buf; | |
1259 | } | |
1260 | ||
1261 | static char * | |
fba45db2 | 1262 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1263 | { |
1264 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1265 | *pkt++ = hexchars[(byte & 0xf)]; | |
1266 | return pkt; | |
1267 | } | |
1268 | ||
1269 | static char * | |
fba45db2 | 1270 | unpack_byte (char *buf, int *value) |
c906108c SS |
1271 | { |
1272 | *value = stub_unpack_int (buf, 2); | |
1273 | return buf + 2; | |
1274 | } | |
1275 | ||
1276 | static char * | |
fba45db2 | 1277 | pack_int (char *buf, int value) |
c906108c SS |
1278 | { |
1279 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1280 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1281 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1282 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1283 | return buf; | |
1284 | } | |
1285 | ||
1286 | static char * | |
fba45db2 | 1287 | unpack_int (char *buf, int *value) |
c906108c SS |
1288 | { |
1289 | *value = stub_unpack_int (buf, 8); | |
1290 | return buf + 8; | |
1291 | } | |
1292 | ||
c5aa993b | 1293 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1294 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1295 | |
1296 | static char * | |
fba45db2 | 1297 | pack_string (char *pkt, char *string) |
c906108c SS |
1298 | { |
1299 | char ch; | |
1300 | int len; | |
1301 | ||
1302 | len = strlen (string); | |
1303 | if (len > 200) | |
1304 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1305 | pkt = pack_hex_byte (pkt, len); | |
1306 | while (len-- > 0) | |
1307 | { | |
1308 | ch = *string++; | |
1309 | if ((ch == '\0') || (ch == '#')) | |
1310 | ch = '*'; /* Protect encapsulation */ | |
1311 | *pkt++ = ch; | |
1312 | } | |
1313 | return pkt; | |
1314 | } | |
1315 | #endif /* 0 (unused) */ | |
1316 | ||
1317 | static char * | |
fba45db2 | 1318 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1319 | { |
1320 | while (length--) | |
1321 | *dest++ = *src++; | |
1322 | *dest = '\0'; | |
1323 | return src; | |
1324 | } | |
1325 | ||
1326 | static char * | |
fba45db2 | 1327 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1328 | { |
1329 | char *limit; | |
1330 | unsigned char *altid; | |
1331 | ||
1332 | altid = (unsigned char *) id; | |
1333 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1334 | while (pkt < limit) | |
1335 | pkt = pack_hex_byte (pkt, *altid++); | |
1336 | return pkt; | |
1337 | } | |
1338 | ||
1339 | ||
1340 | static char * | |
fba45db2 | 1341 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1342 | { |
1343 | char *altref; | |
1344 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1345 | int x, y; | |
1346 | ||
1347 | altref = (char *) id; | |
1348 | ||
1349 | while (inbuf < limit) | |
1350 | { | |
1351 | x = stubhex (*inbuf++); | |
1352 | y = stubhex (*inbuf++); | |
1353 | *altref++ = (x << 4) | y; | |
1354 | } | |
1355 | return inbuf; | |
1356 | } | |
1357 | ||
1358 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1359 | ints. This is due to a mismatch of specifications. We would like | |
1360 | to use 64bit thread references internally. This is an adapter | |
1361 | function. */ | |
1362 | ||
1363 | void | |
fba45db2 | 1364 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1365 | { |
1366 | unsigned char *scan; | |
1367 | ||
1368 | scan = (unsigned char *) id; | |
1369 | { | |
1370 | int i = 4; | |
1371 | while (i--) | |
1372 | *scan++ = 0; | |
1373 | } | |
1374 | *scan++ = (value >> 24) & 0xff; | |
1375 | *scan++ = (value >> 16) & 0xff; | |
1376 | *scan++ = (value >> 8) & 0xff; | |
1377 | *scan++ = (value & 0xff); | |
1378 | } | |
1379 | ||
1380 | static int | |
fba45db2 | 1381 | threadref_to_int (threadref *ref) |
c906108c SS |
1382 | { |
1383 | int i, value = 0; | |
1384 | unsigned char *scan; | |
1385 | ||
1386 | scan = (char *) ref; | |
1387 | scan += 4; | |
1388 | i = 4; | |
1389 | while (i-- > 0) | |
1390 | value = (value << 8) | ((*scan++) & 0xff); | |
1391 | return value; | |
1392 | } | |
1393 | ||
1394 | static void | |
fba45db2 | 1395 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1396 | { |
1397 | int i; | |
1398 | unsigned char *csrc, *cdest; | |
1399 | ||
1400 | csrc = (unsigned char *) src; | |
1401 | cdest = (unsigned char *) dest; | |
1402 | i = 8; | |
1403 | while (i--) | |
1404 | *cdest++ = *csrc++; | |
1405 | } | |
1406 | ||
1407 | static int | |
fba45db2 | 1408 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1409 | { |
1410 | /* things are broken right now, so just assume we got a match */ | |
1411 | #if 0 | |
1412 | unsigned char *srcp, *destp; | |
1413 | int i, result; | |
1414 | srcp = (char *) src; | |
1415 | destp = (char *) dest; | |
1416 | ||
1417 | result = 1; | |
1418 | while (i-- > 0) | |
1419 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1420 | return result; | |
1421 | #endif | |
1422 | return 1; | |
1423 | } | |
1424 | ||
1425 | /* | |
c5aa993b JM |
1426 | threadid:1, # always request threadid |
1427 | context_exists:2, | |
1428 | display:4, | |
1429 | unique_name:8, | |
1430 | more_display:16 | |
1431 | */ | |
c906108c SS |
1432 | |
1433 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1434 | ||
1435 | static char * | |
fba45db2 | 1436 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1437 | { |
1438 | *pkt++ = 'q'; /* Info Query */ | |
1439 | *pkt++ = 'P'; /* process or thread info */ | |
1440 | pkt = pack_int (pkt, mode); /* mode */ | |
1441 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1442 | *pkt = '\0'; /* terminate */ | |
1443 | return pkt; | |
1444 | } | |
1445 | ||
1446 | /* These values tag the fields in a thread info response packet */ | |
1447 | /* Tagging the fields allows us to request specific fields and to | |
1448 | add more fields as time goes by */ | |
1449 | ||
c5aa993b JM |
1450 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1451 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1452 | fetch registers and its stack */ | |
1453 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1454 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
802188a7 | 1455 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
c5aa993b | 1456 | the process */ |
c906108c SS |
1457 | |
1458 | static int | |
fba45db2 KB |
1459 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1460 | struct gdb_ext_thread_info *info) | |
c906108c | 1461 | { |
d01949b6 | 1462 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1463 | int mask, length; |
1464 | unsigned int tag; | |
1465 | threadref ref; | |
d01949b6 | 1466 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1467 | int retval = 1; |
1468 | ||
1469 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1470 | info->active = 0; | |
1471 | info->display[0] = '\0'; | |
1472 | info->shortname[0] = '\0'; | |
1473 | info->more_display[0] = '\0'; | |
1474 | ||
1475 | /* Assume the characters indicating the packet type have been stripped */ | |
1476 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1477 | pkt = unpack_threadid (pkt, &ref); | |
1478 | ||
1479 | if (mask == 0) | |
1480 | warning ("Incomplete response to threadinfo request\n"); | |
1481 | if (!threadmatch (&ref, expectedref)) | |
1482 | { /* This is an answer to a different request */ | |
1483 | warning ("ERROR RMT Thread info mismatch\n"); | |
1484 | return 0; | |
1485 | } | |
1486 | copy_threadref (&info->threadid, &ref); | |
1487 | ||
1488 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1489 | ||
c5aa993b | 1490 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1491 | { |
1492 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1493 | pkt = unpack_byte (pkt, &length); /* length */ | |
1494 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1495 | { | |
1496 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1497 | retval = 0; | |
1498 | break; | |
1499 | } | |
1500 | if (tag == TAG_THREADID) | |
1501 | { | |
1502 | if (length != 16) | |
1503 | { | |
1504 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1505 | retval = 0; | |
1506 | break; | |
1507 | } | |
1508 | pkt = unpack_threadid (pkt, &ref); | |
1509 | mask = mask & ~TAG_THREADID; | |
1510 | continue; | |
1511 | } | |
1512 | if (tag == TAG_EXISTS) | |
1513 | { | |
1514 | info->active = stub_unpack_int (pkt, length); | |
1515 | pkt += length; | |
1516 | mask = mask & ~(TAG_EXISTS); | |
1517 | if (length > 8) | |
1518 | { | |
1519 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1520 | retval = 0; | |
1521 | break; | |
1522 | } | |
1523 | continue; | |
1524 | } | |
1525 | if (tag == TAG_THREADNAME) | |
1526 | { | |
1527 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1528 | mask = mask & ~TAG_THREADNAME; | |
1529 | continue; | |
1530 | } | |
1531 | if (tag == TAG_DISPLAY) | |
1532 | { | |
1533 | pkt = unpack_string (pkt, &info->display[0], length); | |
1534 | mask = mask & ~TAG_DISPLAY; | |
1535 | continue; | |
1536 | } | |
1537 | if (tag == TAG_MOREDISPLAY) | |
1538 | { | |
1539 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1540 | mask = mask & ~TAG_MOREDISPLAY; | |
1541 | continue; | |
1542 | } | |
1543 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1544 | break; /* Not a tag we know about */ | |
1545 | } | |
1546 | return retval; | |
1547 | } | |
1548 | ||
1549 | static int | |
fba45db2 KB |
1550 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1551 | struct gdb_ext_thread_info *info) | |
c906108c | 1552 | { |
d01949b6 | 1553 | struct remote_state *rs = get_remote_state (); |
c906108c | 1554 | int result; |
d01949b6 | 1555 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1556 | |
1557 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1558 | putpkt (threadinfo_pkt); | |
d01949b6 | 1559 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1560 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1561 | info); | |
1562 | return result; | |
1563 | } | |
1564 | ||
c906108c SS |
1565 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1566 | ||
1567 | static char * | |
fba45db2 KB |
1568 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1569 | threadref *nextthread) | |
c906108c SS |
1570 | { |
1571 | *pkt++ = 'q'; /* info query packet */ | |
1572 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1573 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1574 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1575 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1576 | *pkt = '\0'; | |
1577 | return pkt; | |
1578 | } | |
1579 | ||
1580 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1581 | ||
1582 | static int | |
fba45db2 KB |
1583 | parse_threadlist_response (char *pkt, int result_limit, |
1584 | threadref *original_echo, threadref *resultlist, | |
1585 | int *doneflag) | |
c906108c | 1586 | { |
d01949b6 | 1587 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1588 | char *limit; |
1589 | int count, resultcount, done; | |
1590 | ||
1591 | resultcount = 0; | |
1592 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1593 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1594 | pkt = unpack_byte (pkt, &count); /* count field */ |
1595 | pkt = unpack_nibble (pkt, &done); | |
1596 | /* The first threadid is the argument threadid. */ | |
1597 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1598 | while ((count-- > 0) && (pkt < limit)) | |
1599 | { | |
1600 | pkt = unpack_threadid (pkt, resultlist++); | |
1601 | if (resultcount++ >= result_limit) | |
1602 | break; | |
1603 | } | |
1604 | if (doneflag) | |
1605 | *doneflag = done; | |
1606 | return resultcount; | |
1607 | } | |
1608 | ||
1609 | static int | |
fba45db2 KB |
1610 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1611 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1612 | { |
d01949b6 | 1613 | struct remote_state *rs = get_remote_state (); |
c906108c | 1614 | static threadref echo_nextthread; |
d01949b6 AC |
1615 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1616 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1617 | int result = 1; |
1618 | ||
1619 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1620 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1621 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1622 | |
1623 | pack_threadlist_request (threadlist_packet, | |
1624 | startflag, result_limit, nextthread); | |
1625 | putpkt (threadlist_packet); | |
d01949b6 | 1626 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1627 | |
1628 | *result_count = | |
1629 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1630 | threadlist, done); | |
1631 | ||
1632 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1633 | { | |
1634 | /* FIXME: This is a good reason to drop the packet */ | |
1635 | /* Possably, there is a duplicate response */ | |
1636 | /* Possabilities : | |
1637 | retransmit immediatly - race conditions | |
1638 | retransmit after timeout - yes | |
1639 | exit | |
1640 | wait for packet, then exit | |
1641 | */ | |
1642 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1643 | return 0; /* I choose simply exiting */ | |
1644 | } | |
1645 | if (*result_count <= 0) | |
1646 | { | |
1647 | if (*done != 1) | |
1648 | { | |
1649 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1650 | result = 0; | |
1651 | } | |
1652 | return result; /* break; */ | |
1653 | } | |
1654 | if (*result_count > result_limit) | |
1655 | { | |
1656 | *result_count = 0; | |
1657 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1658 | return 0; | |
1659 | } | |
1660 | return result; | |
1661 | } | |
1662 | ||
1663 | /* This is the interface between remote and threads, remotes upper interface */ | |
1664 | ||
1665 | /* remote_find_new_threads retrieves the thread list and for each | |
1666 | thread in the list, looks up the thread in GDB's internal list, | |
1667 | ading the thread if it does not already exist. This involves | |
1668 | getting partial thread lists from the remote target so, polling the | |
1669 | quit_flag is required. */ | |
1670 | ||
1671 | ||
1672 | /* About this many threadisds fit in a packet. */ | |
1673 | ||
1674 | #define MAXTHREADLISTRESULTS 32 | |
1675 | ||
1676 | static int | |
fba45db2 KB |
1677 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1678 | int looplimit) | |
c906108c SS |
1679 | { |
1680 | int done, i, result_count; | |
1681 | int startflag = 1; | |
1682 | int result = 1; | |
1683 | int loopcount = 0; | |
1684 | static threadref nextthread; | |
1685 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1686 | ||
1687 | done = 0; | |
1688 | while (!done) | |
1689 | { | |
1690 | if (loopcount++ > looplimit) | |
1691 | { | |
1692 | result = 0; | |
1693 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1694 | break; | |
1695 | } | |
1696 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1697 | &done, &result_count, resultthreadlist)) | |
1698 | { | |
1699 | result = 0; | |
1700 | break; | |
1701 | } | |
1702 | /* clear for later iterations */ | |
1703 | startflag = 0; | |
1704 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1705 | if (result_count >= 1) | |
1706 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1707 | i = 0; | |
1708 | while (result_count--) | |
1709 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1710 | break; | |
1711 | } | |
1712 | return result; | |
1713 | } | |
1714 | ||
1715 | static int | |
fba45db2 | 1716 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1717 | { |
39f77062 | 1718 | ptid_t ptid; |
c906108c | 1719 | |
39f77062 KB |
1720 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1721 | ||
1722 | if (!in_thread_list (ptid)) | |
1723 | add_thread (ptid); | |
c906108c SS |
1724 | return 1; /* continue iterator */ |
1725 | } | |
1726 | ||
1727 | #define CRAZY_MAX_THREADS 1000 | |
1728 | ||
39f77062 KB |
1729 | static ptid_t |
1730 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1731 | { |
d01949b6 AC |
1732 | struct remote_state *rs = get_remote_state (); |
1733 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1734 | |
1735 | putpkt ("qC"); | |
d01949b6 | 1736 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1737 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1738 | /* Use strtoul here, so we'll correctly parse values whose highest |
1739 | bit is set. The protocol carries them as a simple series of | |
1740 | hex digits; in the absence of a sign, strtol will see such | |
1741 | values as positive numbers out of range for signed 'long', and | |
1742 | return LONG_MAX to indicate an overflow. */ | |
1743 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1744 | else |
1745 | return oldpid; | |
1746 | } | |
1747 | ||
802188a7 RM |
1748 | /* Find new threads for info threads command. |
1749 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1750 | */ |
cce74817 JM |
1751 | |
1752 | static void | |
fba45db2 | 1753 | remote_find_new_threads (void) |
c906108c | 1754 | { |
c5aa993b JM |
1755 | remote_threadlist_iterator (remote_newthread_step, 0, |
1756 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1757 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1758 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1759 | } |
1760 | ||
9d1f7ab2 MS |
1761 | /* |
1762 | * Find all threads for info threads command. | |
1763 | * Uses new thread protocol contributed by Cisco. | |
1764 | * Falls back and attempts to use the older method (above) | |
1765 | * if the target doesn't respond to the new method. | |
1766 | */ | |
1767 | ||
0f71a2f6 JM |
1768 | static void |
1769 | remote_threads_info (void) | |
1770 | { | |
d01949b6 AC |
1771 | struct remote_state *rs = get_remote_state (); |
1772 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1773 | char *bufp; |
0f71a2f6 JM |
1774 | int tid; |
1775 | ||
1776 | if (remote_desc == 0) /* paranoia */ | |
1777 | error ("Command can only be used when connected to the remote target."); | |
1778 | ||
9d1f7ab2 MS |
1779 | if (use_threadinfo_query) |
1780 | { | |
1781 | putpkt ("qfThreadInfo"); | |
1782 | bufp = buf; | |
d01949b6 | 1783 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 | 1784 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1785 | { |
9d1f7ab2 MS |
1786 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1787 | { | |
1788 | do | |
1789 | { | |
c273b20f JB |
1790 | /* Use strtoul here, so we'll correctly parse values |
1791 | whose highest bit is set. The protocol carries | |
1792 | them as a simple series of hex digits; in the | |
1793 | absence of a sign, strtol will see such values as | |
1794 | positive numbers out of range for signed 'long', | |
1795 | and return LONG_MAX to indicate an overflow. */ | |
1796 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1797 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1798 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1799 | } |
1800 | while (*bufp++ == ','); /* comma-separated list */ | |
1801 | putpkt ("qsThreadInfo"); | |
1802 | bufp = buf; | |
d01949b6 | 1803 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1804 | } |
1805 | return; /* done */ | |
1806 | } | |
1807 | } | |
1808 | ||
1809 | /* Else fall back to old method based on jmetzler protocol. */ | |
1810 | use_threadinfo_query = 0; | |
1811 | remote_find_new_threads (); | |
1812 | return; | |
1813 | } | |
1814 | ||
802188a7 | 1815 | /* |
9d1f7ab2 MS |
1816 | * Collect a descriptive string about the given thread. |
1817 | * The target may say anything it wants to about the thread | |
1818 | * (typically info about its blocked / runnable state, name, etc.). | |
1819 | * This string will appear in the info threads display. | |
802188a7 | 1820 | * |
9d1f7ab2 MS |
1821 | * Optional: targets are not required to implement this function. |
1822 | */ | |
1823 | ||
1824 | static char * | |
1825 | remote_threads_extra_info (struct thread_info *tp) | |
1826 | { | |
d01949b6 | 1827 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1828 | int result; |
1829 | int set; | |
1830 | threadref id; | |
1831 | struct gdb_ext_thread_info threadinfo; | |
1832 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1833 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1834 | int n = 0; /* position in display_buf */ |
1835 | ||
1836 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1837 | internal_error (__FILE__, __LINE__, |
1838 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1839 | |
1840 | if (use_threadextra_query) | |
1841 | { | |
39f77062 | 1842 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1843 | putpkt (bufp); |
d01949b6 | 1844 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1845 | if (bufp[0] != 0) |
1846 | { | |
30559e10 MS |
1847 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1848 | result = hex2bin (bufp, display_buf, n); | |
1849 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1850 | return display_buf; |
1851 | } | |
0f71a2f6 | 1852 | } |
9d1f7ab2 MS |
1853 | |
1854 | /* If the above query fails, fall back to the old method. */ | |
1855 | use_threadextra_query = 0; | |
1856 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1857 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1858 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1859 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1860 | if (threadinfo.active) | |
0f71a2f6 | 1861 | { |
9d1f7ab2 MS |
1862 | if (*threadinfo.shortname) |
1863 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1864 | if (*threadinfo.display) | |
1865 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1866 | if (*threadinfo.more_display) | |
1867 | n += sprintf(&display_buf[n], " Priority: %s", | |
1868 | threadinfo.more_display); | |
1869 | ||
1870 | if (n > 0) | |
c5aa993b | 1871 | { |
9d1f7ab2 MS |
1872 | /* for purely cosmetic reasons, clear up trailing commas */ |
1873 | if (',' == display_buf[n-1]) | |
1874 | display_buf[n-1] = ' '; | |
1875 | return display_buf; | |
c5aa993b | 1876 | } |
0f71a2f6 | 1877 | } |
9d1f7ab2 | 1878 | return NULL; |
0f71a2f6 | 1879 | } |
9d1f7ab2 | 1880 | |
c906108c | 1881 | \f |
c5aa993b | 1882 | |
c906108c SS |
1883 | /* Restart the remote side; this is an extended protocol operation. */ |
1884 | ||
1885 | static void | |
fba45db2 | 1886 | extended_remote_restart (void) |
c906108c | 1887 | { |
d01949b6 AC |
1888 | struct remote_state *rs = get_remote_state (); |
1889 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1890 | |
1891 | /* Send the restart command; for reasons I don't understand the | |
1892 | remote side really expects a number after the "R". */ | |
1893 | buf[0] = 'R'; | |
1894 | sprintf (&buf[1], "%x", 0); | |
1895 | putpkt (buf); | |
1896 | ||
1897 | /* Now query for status so this looks just like we restarted | |
1898 | gdbserver from scratch. */ | |
1899 | putpkt ("?"); | |
d01949b6 | 1900 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1901 | } |
1902 | \f | |
1903 | /* Clean up connection to a remote debugger. */ | |
1904 | ||
c906108c | 1905 | static void |
fba45db2 | 1906 | remote_close (int quitting) |
c906108c SS |
1907 | { |
1908 | if (remote_desc) | |
2cd58942 | 1909 | serial_close (remote_desc); |
c906108c SS |
1910 | remote_desc = NULL; |
1911 | } | |
1912 | ||
1913 | /* Query the remote side for the text, data and bss offsets. */ | |
1914 | ||
1915 | static void | |
fba45db2 | 1916 | get_offsets (void) |
c906108c | 1917 | { |
d01949b6 AC |
1918 | struct remote_state *rs = get_remote_state (); |
1919 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1920 | char *ptr; |
c906108c SS |
1921 | int lose; |
1922 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1923 | struct section_offsets *offs; | |
1924 | ||
1925 | putpkt ("qOffsets"); | |
1926 | ||
d01949b6 | 1927 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1928 | |
1929 | if (buf[0] == '\000') | |
1930 | return; /* Return silently. Stub doesn't support | |
1931 | this command. */ | |
1932 | if (buf[0] == 'E') | |
1933 | { | |
1934 | warning ("Remote failure reply: %s", buf); | |
1935 | return; | |
1936 | } | |
1937 | ||
1938 | /* Pick up each field in turn. This used to be done with scanf, but | |
1939 | scanf will make trouble if CORE_ADDR size doesn't match | |
1940 | conversion directives correctly. The following code will work | |
1941 | with any size of CORE_ADDR. */ | |
1942 | text_addr = data_addr = bss_addr = 0; | |
1943 | ptr = buf; | |
1944 | lose = 0; | |
1945 | ||
1946 | if (strncmp (ptr, "Text=", 5) == 0) | |
1947 | { | |
1948 | ptr += 5; | |
1949 | /* Don't use strtol, could lose on big values. */ | |
1950 | while (*ptr && *ptr != ';') | |
1951 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1952 | } | |
1953 | else | |
1954 | lose = 1; | |
1955 | ||
1956 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1957 | { | |
1958 | ptr += 6; | |
1959 | while (*ptr && *ptr != ';') | |
1960 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1961 | } | |
1962 | else | |
1963 | lose = 1; | |
1964 | ||
1965 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1966 | { | |
1967 | ptr += 5; | |
1968 | while (*ptr && *ptr != ';') | |
1969 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1970 | } | |
1971 | else | |
1972 | lose = 1; | |
1973 | ||
1974 | if (lose) | |
1975 | error ("Malformed response to offset query, %s", buf); | |
1976 | ||
1977 | if (symfile_objfile == NULL) | |
1978 | return; | |
1979 | ||
802188a7 | 1980 | offs = ((struct section_offsets *) |
a39a16c4 | 1981 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1982 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1983 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1984 | |
a4c8257b | 1985 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1986 | |
1987 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1988 | because that's what nlmconv does now. The real solution requires changes | |
1989 | to the stub and remote.c that I don't have time to do right now. */ | |
1990 | ||
a4c8257b EZ |
1991 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1992 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1993 | |
1994 | objfile_relocate (symfile_objfile, offs); | |
1995 | } | |
1996 | ||
1997 | /* Stub for catch_errors. */ | |
1998 | ||
0f71a2f6 | 1999 | static int |
36918e70 | 2000 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 JM |
2001 | { |
2002 | start_remote (); /* Initialize gdb process mechanisms */ | |
36918e70 AC |
2003 | /* NOTE: Return something >=0. A -ve value is reserved for |
2004 | catch_exceptions. */ | |
0f71a2f6 JM |
2005 | return 1; |
2006 | } | |
2007 | ||
c906108c | 2008 | static int |
36918e70 | 2009 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 2010 | { |
8edbea78 | 2011 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2012 | |
2013 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2014 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2015 | |
2016 | /* Let the stub know that we want it to return the thread. */ | |
2017 | set_thread (-1, 0); | |
2018 | ||
39f77062 | 2019 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2020 | |
2021 | get_offsets (); /* Get text, data & bss offsets */ | |
2022 | ||
2023 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2024 | immediate_quit--; |
c906108c | 2025 | |
36918e70 AC |
2026 | /* NOTE: See comment above in remote_start_remote_dummy(). This |
2027 | function returns something >=0. */ | |
2028 | return remote_start_remote_dummy (uiout, dummy); | |
c906108c SS |
2029 | } |
2030 | ||
2031 | /* Open a connection to a remote debugger. | |
2032 | NAME is the filename used for communication. */ | |
2033 | ||
2034 | static void | |
fba45db2 | 2035 | remote_open (char *name, int from_tty) |
c906108c | 2036 | { |
92d1e331 | 2037 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2038 | } |
2039 | ||
43ff13b4 JM |
2040 | /* Just like remote_open, but with asynchronous support. */ |
2041 | static void | |
fba45db2 | 2042 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2043 | { |
92d1e331 | 2044 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2045 | } |
2046 | ||
c906108c SS |
2047 | /* Open a connection to a remote debugger using the extended |
2048 | remote gdb protocol. NAME is the filename used for communication. */ | |
2049 | ||
2050 | static void | |
fba45db2 | 2051 | extended_remote_open (char *name, int from_tty) |
c906108c | 2052 | { |
92d1e331 DJ |
2053 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2054 | 0 /* async_p */); | |
c906108c SS |
2055 | } |
2056 | ||
43ff13b4 JM |
2057 | /* Just like extended_remote_open, but with asynchronous support. */ |
2058 | static void | |
fba45db2 | 2059 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2060 | { |
92d1e331 DJ |
2061 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2062 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2063 | } |
2064 | ||
c906108c SS |
2065 | /* Generic code for opening a connection to a remote target. */ |
2066 | ||
d471ea57 AC |
2067 | static void |
2068 | init_all_packet_configs (void) | |
2069 | { | |
2070 | int i; | |
2071 | update_packet_config (&remote_protocol_P); | |
b96ec7ac | 2072 | update_packet_config (&remote_protocol_p); |
dc8acb97 | 2073 | update_packet_config (&remote_protocol_qSymbol); |
506fb367 | 2074 | update_packet_config (&remote_protocol_vcont); |
d471ea57 AC |
2075 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2076 | update_packet_config (&remote_protocol_Z[i]); | |
2077 | /* Force remote_write_bytes to check whether target supports binary | |
2078 | downloading. */ | |
2079 | update_packet_config (&remote_protocol_binary_download); | |
802188a7 | 2080 | update_packet_config (&remote_protocol_qPart_auxv); |
d471ea57 AC |
2081 | } |
2082 | ||
dc8acb97 MS |
2083 | /* Symbol look-up. */ |
2084 | ||
2085 | static void | |
2086 | remote_check_symbols (struct objfile *objfile) | |
2087 | { | |
d01949b6 | 2088 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2089 | char *msg, *reply, *tmp; |
2090 | struct minimal_symbol *sym; | |
2091 | int end; | |
2092 | ||
2093 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2094 | return; | |
2095 | ||
d01949b6 AC |
2096 | msg = alloca (rs->remote_packet_size); |
2097 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2098 | |
2099 | /* Invite target to request symbol lookups. */ | |
2100 | ||
2101 | putpkt ("qSymbol::"); | |
d01949b6 | 2102 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2103 | packet_ok (reply, &remote_protocol_qSymbol); |
2104 | ||
2105 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2106 | { | |
2107 | tmp = &reply[8]; | |
2108 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2109 | msg[end] = '\0'; | |
2110 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2111 | if (sym == NULL) | |
2112 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2113 | else | |
802188a7 | 2114 | sprintf (msg, "qSymbol:%s:%s", |
dc8acb97 MS |
2115 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2116 | &reply[8]); | |
2117 | putpkt (msg); | |
d01949b6 | 2118 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2119 | } |
2120 | } | |
2121 | ||
9db8d71f DJ |
2122 | static struct serial * |
2123 | remote_serial_open (char *name) | |
2124 | { | |
2125 | static int udp_warning = 0; | |
2126 | ||
2127 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2128 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2129 | serial connection is reliable and not the serial connection promising | |
2130 | to be. */ | |
2131 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2132 | { | |
2133 | warning ("The remote protocol may be unreliable over UDP."); | |
2134 | warning ("Some events may be lost, rendering further debugging " | |
2135 | "impossible."); | |
2136 | udp_warning = 1; | |
2137 | } | |
2138 | ||
2139 | return serial_open (name); | |
2140 | } | |
2141 | ||
c906108c | 2142 | static void |
fba45db2 | 2143 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2144 | int extended_p, int async_p) |
c906108c | 2145 | { |
36918e70 | 2146 | int ex; |
d01949b6 | 2147 | struct remote_state *rs = get_remote_state (); |
c906108c | 2148 | if (name == 0) |
22e04375 AC |
2149 | error ("To open a remote debug connection, you need to specify what\n" |
2150 | "serial device is attached to the remote system\n" | |
2151 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2152 | |
6426a772 | 2153 | /* See FIXME above */ |
92d1e331 DJ |
2154 | if (!async_p) |
2155 | wait_forever_enabled_p = 1; | |
6426a772 | 2156 | |
00cac895 DJ |
2157 | reopen_exec_file (); |
2158 | reread_symbols (); | |
2159 | ||
c906108c SS |
2160 | target_preopen (from_tty); |
2161 | ||
2162 | unpush_target (target); | |
2163 | ||
9db8d71f | 2164 | remote_desc = remote_serial_open (name); |
c906108c SS |
2165 | if (!remote_desc) |
2166 | perror_with_name (name); | |
2167 | ||
2168 | if (baud_rate != -1) | |
2169 | { | |
2cd58942 | 2170 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2171 | { |
9b74d5d3 KB |
2172 | /* The requested speed could not be set. Error out to |
2173 | top level after closing remote_desc. Take care to | |
2174 | set remote_desc to NULL to avoid closing remote_desc | |
2175 | more than once. */ | |
2cd58942 | 2176 | serial_close (remote_desc); |
9b74d5d3 | 2177 | remote_desc = NULL; |
c906108c SS |
2178 | perror_with_name (name); |
2179 | } | |
2180 | } | |
2181 | ||
2cd58942 | 2182 | serial_raw (remote_desc); |
c906108c SS |
2183 | |
2184 | /* If there is something sitting in the buffer we might take it as a | |
2185 | response to a command, which would be bad. */ | |
2cd58942 | 2186 | serial_flush_input (remote_desc); |
c906108c SS |
2187 | |
2188 | if (from_tty) | |
2189 | { | |
2190 | puts_filtered ("Remote debugging using "); | |
2191 | puts_filtered (name); | |
2192 | puts_filtered ("\n"); | |
2193 | } | |
c5aa993b | 2194 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2195 | |
d471ea57 | 2196 | init_all_packet_configs (); |
802188a7 | 2197 | |
c5aa993b | 2198 | general_thread = -2; |
cce74817 | 2199 | continue_thread = -2; |
c906108c | 2200 | |
9d1f7ab2 MS |
2201 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2202 | use_threadinfo_query = 1; | |
2203 | use_threadextra_query = 1; | |
2204 | ||
c906108c SS |
2205 | /* Without this, some commands which require an active target (such |
2206 | as kill) won't work. This variable serves (at least) double duty | |
2207 | as both the pid of the target process (if it has such), and as a | |
2208 | flag indicating that a target is active. These functions should | |
2209 | be split out into seperate variables, especially since GDB will | |
2210 | someday have a notion of debugging several processes. */ | |
2211 | ||
39f77062 | 2212 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2213 | |
2214 | if (async_p) | |
2215 | { | |
2216 | /* With this target we start out by owning the terminal. */ | |
2217 | remote_async_terminal_ours_p = 1; | |
2218 | ||
2219 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2220 | assumed that the target is already ready and able to respond to | |
2221 | requests. Unfortunately remote_start_remote() eventually calls | |
2222 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2223 | around this. Eventually a mechanism that allows | |
2224 | wait_for_inferior() to expect/get timeouts will be | |
2225 | implemented. */ | |
2226 | wait_forever_enabled_p = 0; | |
2227 | } | |
2228 | ||
f78f6cf1 MS |
2229 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2230 | /* First delete any symbols previously loaded from shared libraries. */ | |
2231 | no_shared_libraries (NULL, 0); | |
2232 | #endif | |
2233 | ||
36918e70 | 2234 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2235 | target (we'd otherwise be in an inconsistent state) and then |
2236 | propogate the error on up the exception chain. This ensures that | |
2237 | the caller doesn't stumble along blindly assuming that the | |
2238 | function succeeded. The CLI doesn't have this problem but other | |
2239 | UI's, such as MI do. | |
36918e70 AC |
2240 | |
2241 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2242 | this function should return an error indication letting the | |
ce2826aa | 2243 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2244 | ``target remote'' is directly wired to this function making that |
2245 | impossible. On a positive note, the CLI side of this problem has | |
2246 | been fixed - the function set_cmd_context() makes it possible for | |
2247 | all the ``target ....'' commands to share a common callback | |
2248 | function. See cli-dump.c. */ | |
2249 | ex = catch_exceptions (uiout, | |
2250 | remote_start_remote, NULL, | |
2251 | "Couldn't establish connection to remote" | |
2252 | " target\n", | |
2253 | RETURN_MASK_ALL); | |
2254 | if (ex < 0) | |
c906108c SS |
2255 | { |
2256 | pop_target (); | |
92d1e331 DJ |
2257 | if (async_p) |
2258 | wait_forever_enabled_p = 1; | |
165b8e33 | 2259 | throw_exception (ex); |
c906108c SS |
2260 | } |
2261 | ||
92d1e331 DJ |
2262 | if (async_p) |
2263 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2264 | |
2265 | if (extended_p) | |
43ff13b4 | 2266 | { |
6240bebf | 2267 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2268 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2269 | putpkt ("!"); |
d01949b6 | 2270 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2271 | } |
f78f6cf1 | 2272 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
802188a7 RM |
2273 | /* FIXME: need a master target_open vector from which all |
2274 | remote_opens can be called, so that stuff like this can | |
6240bebf | 2275 | go there. Failing that, the following code must be copied |
802188a7 | 2276 | to the open function for any remote target that wants to |
6240bebf | 2277 | support svr4 shared libraries. */ |
f78f6cf1 MS |
2278 | |
2279 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2280 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2281 | { |
2282 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2283 | remote_check_symbols (symfile_objfile); | |
2284 | } | |
6240bebf | 2285 | #endif |
43ff13b4 JM |
2286 | } |
2287 | ||
c906108c SS |
2288 | /* This takes a program previously attached to and detaches it. After |
2289 | this is done, GDB can be used to debug some other program. We | |
2290 | better not have left any breakpoints in the target program or it'll | |
2291 | die when it hits one. */ | |
2292 | ||
2293 | static void | |
fba45db2 | 2294 | remote_detach (char *args, int from_tty) |
c906108c | 2295 | { |
d01949b6 AC |
2296 | struct remote_state *rs = get_remote_state (); |
2297 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2298 | |
2299 | if (args) | |
2300 | error ("Argument given to \"detach\" when remotely debugging."); | |
2301 | ||
2302 | /* Tell the remote target to detach. */ | |
2303 | strcpy (buf, "D"); | |
d01949b6 | 2304 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2305 | |
6ad8ae5c DJ |
2306 | /* Unregister the file descriptor from the event loop. */ |
2307 | if (target_is_async_p ()) | |
2308 | serial_async (remote_desc, NULL, 0); | |
2309 | ||
cca728d0 | 2310 | target_mourn_inferior (); |
c906108c SS |
2311 | if (from_tty) |
2312 | puts_filtered ("Ending remote debugging.\n"); | |
2313 | } | |
2314 | ||
6ad8ae5c DJ |
2315 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2316 | ||
43ff13b4 | 2317 | static void |
6ad8ae5c | 2318 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2319 | { |
d01949b6 AC |
2320 | struct remote_state *rs = get_remote_state (); |
2321 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2322 | |
2323 | if (args) | |
2324 | error ("Argument given to \"detach\" when remotely debugging."); | |
2325 | ||
43ff13b4 | 2326 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2327 | if (target_is_async_p ()) |
2cd58942 | 2328 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2329 | |
cca728d0 | 2330 | target_mourn_inferior (); |
43ff13b4 JM |
2331 | if (from_tty) |
2332 | puts_filtered ("Ending remote debugging.\n"); | |
2333 | } | |
2334 | ||
c906108c SS |
2335 | /* Convert hex digit A to a number. */ |
2336 | ||
30559e10 | 2337 | static int |
fba45db2 | 2338 | fromhex (int a) |
c906108c SS |
2339 | { |
2340 | if (a >= '0' && a <= '9') | |
2341 | return a - '0'; | |
2342 | else if (a >= 'a' && a <= 'f') | |
2343 | return a - 'a' + 10; | |
2344 | else if (a >= 'A' && a <= 'F') | |
2345 | return a - 'A' + 10; | |
c5aa993b | 2346 | else |
c906108c SS |
2347 | error ("Reply contains invalid hex digit %d", a); |
2348 | } | |
2349 | ||
30559e10 MS |
2350 | static int |
2351 | hex2bin (const char *hex, char *bin, int count) | |
2352 | { | |
2353 | int i; | |
2354 | ||
30559e10 MS |
2355 | for (i = 0; i < count; i++) |
2356 | { | |
2357 | if (hex[0] == 0 || hex[1] == 0) | |
2358 | { | |
2359 | /* Hex string is short, or of uneven length. | |
2360 | Return the count that has been converted so far. */ | |
2361 | return i; | |
2362 | } | |
2363 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2364 | hex += 2; | |
2365 | } | |
2366 | return i; | |
2367 | } | |
2368 | ||
c906108c SS |
2369 | /* Convert number NIB to a hex digit. */ |
2370 | ||
2371 | static int | |
fba45db2 | 2372 | tohex (int nib) |
c906108c SS |
2373 | { |
2374 | if (nib < 10) | |
c5aa993b | 2375 | return '0' + nib; |
c906108c | 2376 | else |
c5aa993b | 2377 | return 'a' + nib - 10; |
c906108c | 2378 | } |
30559e10 MS |
2379 | |
2380 | static int | |
234fa6d1 | 2381 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2382 | { |
2383 | int i; | |
2384 | /* May use a length, or a nul-terminated string as input. */ | |
2385 | if (count == 0) | |
2386 | count = strlen (bin); | |
2387 | ||
2388 | for (i = 0; i < count; i++) | |
2389 | { | |
2390 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2391 | *hex++ = tohex (*bin++ & 0xf); | |
2392 | } | |
2393 | *hex = 0; | |
2394 | return i; | |
2395 | } | |
c906108c | 2396 | \f |
506fb367 DJ |
2397 | /* Check for the availability of vCont. This function should also check |
2398 | the response. */ | |
c906108c SS |
2399 | |
2400 | static void | |
506fb367 | 2401 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2402 | { |
506fb367 DJ |
2403 | strcpy (buf, "vCont?"); |
2404 | putpkt (buf); | |
2405 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2406 | |
506fb367 DJ |
2407 | /* Make sure that the features we assume are supported. */ |
2408 | if (strncmp (buf, "vCont", 5) == 0) | |
2409 | { | |
2410 | char *p = &buf[5]; | |
2411 | int support_s, support_S, support_c, support_C; | |
2412 | ||
2413 | support_s = 0; | |
2414 | support_S = 0; | |
2415 | support_c = 0; | |
2416 | support_C = 0; | |
2417 | while (p && *p == ';') | |
2418 | { | |
2419 | p++; | |
2420 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2421 | support_s = 1; | |
2422 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2423 | support_S = 1; | |
2424 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2425 | support_c = 1; | |
2426 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2427 | support_C = 1; | |
2428 | ||
2429 | p = strchr (p, ';'); | |
2430 | } | |
c906108c | 2431 | |
506fb367 DJ |
2432 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2433 | BUF will make packet_ok disable the packet. */ | |
2434 | if (!support_s || !support_S || !support_c || !support_C) | |
2435 | buf[0] = 0; | |
2436 | } | |
c906108c | 2437 | |
506fb367 DJ |
2438 | packet_ok (buf, &remote_protocol_vcont); |
2439 | } | |
c906108c | 2440 | |
506fb367 DJ |
2441 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2442 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2443 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2444 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2445 | signalled is given in the global INFERIOR_PTID. This function returns | |
2446 | non-zero iff it resumes the inferior. | |
44eaed12 | 2447 | |
506fb367 DJ |
2448 | This function issues a strict subset of all possible vCont commands at the |
2449 | moment. */ | |
44eaed12 | 2450 | |
506fb367 DJ |
2451 | static int |
2452 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2453 | { | |
2454 | struct remote_state *rs = get_remote_state (); | |
2455 | int pid = PIDGET (ptid); | |
2963ee1d | 2456 | char *buf = NULL, *outbuf; |
506fb367 | 2457 | struct cleanup *old_cleanup; |
44eaed12 | 2458 | |
506fb367 DJ |
2459 | buf = xmalloc (rs->remote_packet_size); |
2460 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2461 | |
506fb367 DJ |
2462 | if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN) |
2463 | remote_vcont_probe (rs, buf); | |
44eaed12 | 2464 | |
506fb367 DJ |
2465 | if (remote_protocol_vcont.support == PACKET_DISABLE) |
2466 | { | |
2467 | do_cleanups (old_cleanup); | |
2468 | return 0; | |
44eaed12 C |
2469 | } |
2470 | ||
506fb367 DJ |
2471 | /* If we could generate a wider range of packets, we'd have to worry |
2472 | about overflowing BUF. Should there be a generic | |
2473 | "multi-part-packet" packet? */ | |
2474 | ||
2475 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2476 | { |
506fb367 DJ |
2477 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2478 | don't have any PID numbers the inferior will understand. Make sure | |
2479 | to only send forms that do not specify a PID. */ | |
2480 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2481 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2482 | else if (step) |
2963ee1d | 2483 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2484 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2485 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2486 | else |
2963ee1d | 2487 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2488 | } |
2489 | else if (pid == -1) | |
2490 | { | |
2491 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2492 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2493 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2494 | PIDGET (inferior_ptid)); | |
506fb367 | 2495 | else if (step) |
2963ee1d | 2496 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2497 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2498 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2499 | PIDGET (inferior_ptid)); | |
506fb367 | 2500 | else |
2963ee1d | 2501 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2502 | } |
2503 | else | |
506fb367 DJ |
2504 | { |
2505 | /* Scheduler locking; resume only PTID. */ | |
2506 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2507 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2508 | else if (step) |
2963ee1d | 2509 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2510 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2511 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2512 | else |
2963ee1d | 2513 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2514 | } |
c906108c | 2515 | |
2963ee1d DJ |
2516 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
2517 | make_cleanup (xfree, outbuf); | |
2518 | ||
2519 | putpkt (outbuf); | |
506fb367 DJ |
2520 | |
2521 | do_cleanups (old_cleanup); | |
2522 | ||
2523 | return 1; | |
c906108c | 2524 | } |
43ff13b4 | 2525 | |
506fb367 DJ |
2526 | /* Tell the remote machine to resume. */ |
2527 | ||
2528 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2529 | ||
2530 | static int last_sent_step; | |
2531 | ||
43ff13b4 | 2532 | static void |
506fb367 | 2533 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2534 | { |
d01949b6 AC |
2535 | struct remote_state *rs = get_remote_state (); |
2536 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2537 | int pid = PIDGET (ptid); |
44eaed12 | 2538 | char *p; |
43ff13b4 | 2539 | |
43ff13b4 JM |
2540 | last_sent_signal = siggnal; |
2541 | last_sent_step = step; | |
2542 | ||
2543 | /* A hook for when we need to do something at the last moment before | |
2544 | resumption. */ | |
9a4105ab AC |
2545 | if (deprecated_target_resume_hook) |
2546 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2547 | |
506fb367 DJ |
2548 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2549 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2550 | return; | |
2551 | ||
2552 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2553 | if (pid == -1) | |
2554 | set_thread (0, 0); /* run any thread */ | |
2555 | else | |
2556 | set_thread (pid, 0); /* run this thread */ | |
2557 | ||
43ff13b4 JM |
2558 | if (siggnal != TARGET_SIGNAL_0) |
2559 | { | |
2560 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2561 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2562 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2563 | buf[3] = '\0'; |
2564 | } | |
2565 | else | |
c5aa993b | 2566 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2567 | |
44eaed12 | 2568 | putpkt (buf); |
506fb367 DJ |
2569 | } |
2570 | ||
2571 | /* Same as remote_resume, but with async support. */ | |
2572 | static void | |
2573 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2574 | { | |
2575 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2576 | |
2acceee2 JM |
2577 | /* We are about to start executing the inferior, let's register it |
2578 | with the event loop. NOTE: this is the one place where all the | |
2579 | execution commands end up. We could alternatively do this in each | |
2580 | of the execution commands in infcmd.c.*/ | |
2581 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2582 | into infcmd.c in order to allow inferior function calls to work | |
2583 | NOT asynchronously. */ | |
362646f5 | 2584 | if (target_can_async_p ()) |
2acceee2 JM |
2585 | target_async (inferior_event_handler, 0); |
2586 | /* Tell the world that the target is now executing. */ | |
2587 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2588 | this? Instead, should the client of target just assume (for | |
2589 | async targets) that the target is going to start executing? Is | |
2590 | this information already found in the continuation block? */ | |
ed9a39eb | 2591 | if (target_is_async_p ()) |
2acceee2 | 2592 | target_executing = 1; |
43ff13b4 | 2593 | } |
c906108c | 2594 | \f |
43ff13b4 JM |
2595 | |
2596 | /* Set up the signal handler for SIGINT, while the target is | |
2597 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2598 | static void | |
fba45db2 | 2599 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2600 | { |
c5aa993b | 2601 | sigint_remote_token = |
43ff13b4 JM |
2602 | create_async_signal_handler (async_remote_interrupt, NULL); |
2603 | signal (SIGINT, handle_remote_sigint); | |
2604 | } | |
2605 | ||
2606 | /* Signal handler for SIGINT, while the target is executing. */ | |
2607 | static void | |
fba45db2 | 2608 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2609 | { |
2610 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2611 | sigint_remote_twice_token = |
43ff13b4 JM |
2612 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2613 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2614 | } | |
2615 | ||
2616 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2617 | sent once. It will take effect the second time that the user sends | |
2618 | a ^C. */ | |
2619 | static void | |
fba45db2 | 2620 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2621 | { |
2622 | signal (sig, handle_sigint); | |
c5aa993b | 2623 | sigint_remote_twice_token = |
2df3850c | 2624 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2625 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2626 | } | |
2627 | ||
6426a772 | 2628 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2629 | to a ^C. */ |
c5aa993b | 2630 | static void |
fba45db2 | 2631 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2632 | { |
2633 | if (remote_debug) | |
2634 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2635 | ||
2636 | target_stop (); | |
2637 | } | |
2638 | ||
2639 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2640 | up on the target alltogether. */ | |
2df3850c | 2641 | void |
fba45db2 | 2642 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2643 | { |
2df3850c JM |
2644 | if (remote_debug) |
2645 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2646 | /* Do something only if the target was not killed by the previous |
2647 | cntl-C. */ | |
2648 | if (target_executing) | |
2649 | { | |
2650 | interrupt_query (); | |
2651 | signal (SIGINT, handle_remote_sigint); | |
2652 | } | |
43ff13b4 JM |
2653 | } |
2654 | ||
2655 | /* Reinstall the usual SIGINT handlers, after the target has | |
2656 | stopped. */ | |
6426a772 JM |
2657 | static void |
2658 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2659 | { |
2660 | signal (SIGINT, handle_sigint); | |
2661 | if (sigint_remote_twice_token) | |
c2c6d25f | 2662 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2663 | if (sigint_remote_token) |
c2c6d25f | 2664 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2665 | } |
2666 | ||
c906108c SS |
2667 | /* Send ^C to target to halt it. Target will respond, and send us a |
2668 | packet. */ | |
507f3c78 | 2669 | static void (*ofunc) (int); |
c906108c | 2670 | |
7a292a7a SS |
2671 | /* The command line interface's stop routine. This function is installed |
2672 | as a signal handler for SIGINT. The first time a user requests a | |
2673 | stop, we call remote_stop to send a break or ^C. If there is no | |
2674 | response from the target (it didn't stop when the user requested it), | |
2675 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2676 | static void |
fba45db2 | 2677 | remote_interrupt (int signo) |
c906108c | 2678 | { |
7a292a7a SS |
2679 | /* If this doesn't work, try more severe steps. */ |
2680 | signal (signo, remote_interrupt_twice); | |
2681 | ||
2682 | if (remote_debug) | |
0f71a2f6 | 2683 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2684 | |
2685 | target_stop (); | |
2686 | } | |
2687 | ||
2688 | /* The user typed ^C twice. */ | |
2689 | ||
2690 | static void | |
fba45db2 | 2691 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2692 | { |
2693 | signal (signo, ofunc); | |
2694 | interrupt_query (); | |
c906108c SS |
2695 | signal (signo, remote_interrupt); |
2696 | } | |
7a292a7a SS |
2697 | |
2698 | /* This is the generic stop called via the target vector. When a target | |
2699 | interrupt is requested, either by the command line or the GUI, we | |
2700 | will eventually end up here. */ | |
c906108c | 2701 | static void |
fba45db2 | 2702 | remote_stop (void) |
c906108c | 2703 | { |
7a292a7a SS |
2704 | /* Send a break or a ^C, depending on user preference. */ |
2705 | if (remote_debug) | |
0f71a2f6 | 2706 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2707 | |
7a292a7a | 2708 | if (remote_break) |
2cd58942 | 2709 | serial_send_break (remote_desc); |
c906108c | 2710 | else |
2cd58942 | 2711 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2712 | } |
2713 | ||
2714 | /* Ask the user what to do when an interrupt is received. */ | |
2715 | ||
2716 | static void | |
fba45db2 | 2717 | interrupt_query (void) |
c906108c SS |
2718 | { |
2719 | target_terminal_ours (); | |
2720 | ||
2721 | if (query ("Interrupted while waiting for the program.\n\ | |
2722 | Give up (and stop debugging it)? ")) | |
2723 | { | |
2724 | target_mourn_inferior (); | |
b5a2688f | 2725 | throw_exception (RETURN_QUIT); |
c906108c SS |
2726 | } |
2727 | ||
2728 | target_terminal_inferior (); | |
2729 | } | |
2730 | ||
6426a772 JM |
2731 | /* Enable/disable target terminal ownership. Most targets can use |
2732 | terminal groups to control terminal ownership. Remote targets are | |
2733 | different in that explicit transfer of ownership to/from GDB/target | |
2734 | is required. */ | |
2735 | ||
2736 | static void | |
2737 | remote_async_terminal_inferior (void) | |
2738 | { | |
2739 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2740 | sync_execution here. This function should only be called when | |
2741 | GDB is resuming the inferior in the forground. A background | |
2742 | resume (``run&'') should leave GDB in control of the terminal and | |
2743 | consequently should not call this code. */ | |
2744 | if (!sync_execution) | |
2745 | return; | |
2746 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2747 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2748 | to an asynchronous target with a synchronous command calls this | |
2749 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2750 | stops trying to transfer the terminal to the target when it | |
2751 | shouldn't this guard can go away. */ | |
2752 | if (!remote_async_terminal_ours_p) | |
2753 | return; | |
2754 | delete_file_handler (input_fd); | |
2755 | remote_async_terminal_ours_p = 0; | |
2756 | initialize_sigint_signal_handler (); | |
2757 | /* NOTE: At this point we could also register our selves as the | |
2758 | recipient of all input. Any characters typed could then be | |
2759 | passed on down to the target. */ | |
2760 | } | |
2761 | ||
2762 | static void | |
2763 | remote_async_terminal_ours (void) | |
2764 | { | |
2765 | /* See FIXME in remote_async_terminal_inferior. */ | |
2766 | if (!sync_execution) | |
2767 | return; | |
2768 | /* See FIXME in remote_async_terminal_inferior. */ | |
2769 | if (remote_async_terminal_ours_p) | |
2770 | return; | |
2771 | cleanup_sigint_signal_handler (NULL); | |
2772 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2773 | remote_async_terminal_ours_p = 1; | |
2774 | } | |
2775 | ||
c906108c SS |
2776 | /* If nonzero, ignore the next kill. */ |
2777 | ||
2778 | int kill_kludge; | |
2779 | ||
2780 | void | |
917317f4 | 2781 | remote_console_output (char *msg) |
c906108c SS |
2782 | { |
2783 | char *p; | |
2784 | ||
c5aa993b | 2785 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2786 | { |
2787 | char tb[2]; | |
2788 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2789 | tb[0] = c; | |
2790 | tb[1] = 0; | |
43ff13b4 | 2791 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2792 | } |
917317f4 | 2793 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2794 | } |
2795 | ||
0f71a2f6 JM |
2796 | /* Wait until the remote machine stops, then return, |
2797 | storing status in STATUS just as `wait' would. | |
802188a7 | 2798 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2799 | remote OS, is the thread-id. */ |
c906108c | 2800 | |
39f77062 KB |
2801 | static ptid_t |
2802 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2803 | { |
d01949b6 AC |
2804 | struct remote_state *rs = get_remote_state (); |
2805 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2806 | ULONGEST thread_num = -1; |
3c3bea1c | 2807 | ULONGEST addr; |
c906108c SS |
2808 | |
2809 | status->kind = TARGET_WAITKIND_EXITED; | |
2810 | status->value.integer = 0; | |
2811 | ||
2812 | while (1) | |
2813 | { | |
2814 | unsigned char *p; | |
2815 | ||
c906108c | 2816 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2817 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2818 | signal (SIGINT, ofunc); |
2819 | ||
2820 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2821 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2822 | if (deprecated_target_wait_loop_hook) |
2823 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2824 | |
3c3bea1c GS |
2825 | remote_stopped_by_watchpoint_p = 0; |
2826 | ||
c906108c SS |
2827 | switch (buf[0]) |
2828 | { | |
2829 | case 'E': /* Error of some sort */ | |
2830 | warning ("Remote failure reply: %s", buf); | |
2831 | continue; | |
449092f6 CV |
2832 | case 'F': /* File-I/O request */ |
2833 | remote_fileio_request (buf); | |
2834 | continue; | |
c906108c SS |
2835 | case 'T': /* Status with PC, SP, FP, ... */ |
2836 | { | |
2837 | int i; | |
d9d9c31f | 2838 | char regs[MAX_REGISTER_SIZE]; |
c906108c SS |
2839 | |
2840 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2841 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2842 | ss = signal number |
2843 | n... = register number | |
2844 | r... = register contents | |
2845 | */ | |
c906108c SS |
2846 | p = &buf[3]; /* after Txx */ |
2847 | ||
2848 | while (*p) | |
2849 | { | |
2850 | unsigned char *p1; | |
2851 | char *p_temp; | |
97345198 | 2852 | int fieldsize; |
3c3bea1c GS |
2853 | LONGEST pnum = 0; |
2854 | ||
2855 | /* If the packet contains a register number save it in pnum | |
802188a7 | 2856 | and set p1 to point to the character following it. |
3c3bea1c | 2857 | Otherwise p1 points to p. */ |
c906108c | 2858 | |
3c3bea1c GS |
2859 | /* If this packet is an awatch packet, don't parse the 'a' |
2860 | as a register number. */ | |
2861 | ||
2862 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2863 | { | |
2864 | /* Read the ``P'' register number. */ | |
2865 | pnum = strtol (p, &p_temp, 16); | |
2866 | p1 = (unsigned char *) p_temp; | |
2867 | } | |
802188a7 | 2868 | else |
3c3bea1c | 2869 | p1 = p; |
c906108c | 2870 | |
c5aa993b | 2871 | if (p1 == p) /* No register number present here */ |
c906108c | 2872 | { |
3c3bea1c | 2873 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c SS |
2874 | if (p1 == NULL) |
2875 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2876 | Packet: '%s'\n", | |
2877 | p, buf); | |
3c3bea1c | 2878 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2879 | { |
2880 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2881 | record_currthread (thread_num); | |
2882 | p = (unsigned char *) p_temp; | |
2883 | } | |
3c3bea1c GS |
2884 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2885 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2886 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2887 | { | |
2888 | remote_stopped_by_watchpoint_p = 1; | |
2889 | p = unpack_varlen_hex (++p1, &addr); | |
2890 | remote_watch_data_address = (CORE_ADDR)addr; | |
2891 | } | |
2892 | else | |
2893 | { | |
2894 | /* Silently skip unknown optional info. */ | |
2895 | p_temp = strchr (p1 + 1, ';'); | |
2896 | if (p_temp) | |
2897 | p = (unsigned char *) p_temp; | |
2898 | } | |
c906108c SS |
2899 | } |
2900 | else | |
2901 | { | |
ad10f812 | 2902 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2903 | p = p1; |
2904 | ||
2905 | if (*p++ != ':') | |
3fcb8548 AC |
2906 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
2907 | p, buf); | |
c906108c | 2908 | |
ad10f812 | 2909 | if (reg == NULL) |
3fcb8548 AC |
2910 | error ("Remote sent bad register number %s: %s\nPacket: '%s'\n", |
2911 | phex_nz (pnum, 0), p, buf); | |
c906108c | 2912 | |
3acba339 | 2913 | fieldsize = hex2bin (p, regs, register_size (current_gdbarch, reg->regnum)); |
97345198 | 2914 | p += 2 * fieldsize; |
3acba339 | 2915 | if (fieldsize < register_size (current_gdbarch, reg->regnum)) |
30559e10 | 2916 | warning ("Remote reply is too short: %s", buf); |
23a6d369 | 2917 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
c906108c SS |
2918 | } |
2919 | ||
2920 | if (*p++ != ';') | |
3fcb8548 | 2921 | error ("Remote register badly formatted: %s\nhere: %s", buf, p); |
c906108c SS |
2922 | } |
2923 | } | |
2924 | /* fall through */ | |
2925 | case 'S': /* Old style status, just signal only */ | |
2926 | status->kind = TARGET_WAITKIND_STOPPED; | |
2927 | status->value.sig = (enum target_signal) | |
2928 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2929 | ||
0f71a2f6 JM |
2930 | if (buf[3] == 'p') |
2931 | { | |
0f71a2f6 JM |
2932 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2933 | record_currthread (thread_num); | |
2934 | } | |
c906108c SS |
2935 | goto got_status; |
2936 | case 'W': /* Target exited */ | |
2937 | { | |
2938 | /* The remote process exited. */ | |
2939 | status->kind = TARGET_WAITKIND_EXITED; | |
2940 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2941 | goto got_status; | |
2942 | } | |
2943 | case 'X': | |
2944 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2945 | status->value.sig = (enum target_signal) | |
2946 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2947 | kill_kludge = 1; | |
2948 | ||
2949 | goto got_status; | |
2950 | case 'O': /* Console output */ | |
2951 | remote_console_output (buf + 1); | |
2952 | continue; | |
2953 | case '\0': | |
2954 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2955 | { | |
2956 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2957 | the remote system doesn't support it. */ |
c906108c SS |
2958 | target_terminal_ours_for_output (); |
2959 | printf_filtered | |
2960 | ("Can't send signals to this remote system. %s not sent.\n", | |
2961 | target_signal_to_name (last_sent_signal)); | |
2962 | last_sent_signal = TARGET_SIGNAL_0; | |
2963 | target_terminal_inferior (); | |
2964 | ||
2965 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2966 | putpkt ((char *) buf); | |
2967 | continue; | |
2968 | } | |
2969 | /* else fallthrough */ | |
2970 | default: | |
2971 | warning ("Invalid remote reply: %s", buf); | |
2972 | continue; | |
2973 | } | |
2974 | } | |
c5aa993b | 2975 | got_status: |
c906108c SS |
2976 | if (thread_num != -1) |
2977 | { | |
39f77062 | 2978 | return pid_to_ptid (thread_num); |
c906108c | 2979 | } |
39f77062 | 2980 | return inferior_ptid; |
c906108c SS |
2981 | } |
2982 | ||
43ff13b4 | 2983 | /* Async version of remote_wait. */ |
39f77062 KB |
2984 | static ptid_t |
2985 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 2986 | { |
d01949b6 AC |
2987 | struct remote_state *rs = get_remote_state (); |
2988 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2989 | ULONGEST thread_num = -1; |
3c3bea1c | 2990 | ULONGEST addr; |
43ff13b4 JM |
2991 | |
2992 | status->kind = TARGET_WAITKIND_EXITED; | |
2993 | status->value.integer = 0; | |
2994 | ||
3c3bea1c GS |
2995 | remote_stopped_by_watchpoint_p = 0; |
2996 | ||
43ff13b4 JM |
2997 | while (1) |
2998 | { | |
2999 | unsigned char *p; | |
c5aa993b | 3000 | |
ed9a39eb | 3001 | if (!target_is_async_p ()) |
43ff13b4 | 3002 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3003 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3004 | _never_ wait for ever -> test on target_is_async_p(). | |
3005 | However, before we do that we need to ensure that the caller | |
3006 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 3007 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3008 | if (!target_is_async_p ()) |
43ff13b4 JM |
3009 | signal (SIGINT, ofunc); |
3010 | ||
3011 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3012 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3013 | if (deprecated_target_wait_loop_hook) |
3014 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3015 | |
3016 | switch (buf[0]) | |
3017 | { | |
3018 | case 'E': /* Error of some sort */ | |
3019 | warning ("Remote failure reply: %s", buf); | |
3020 | continue; | |
449092f6 CV |
3021 | case 'F': /* File-I/O request */ |
3022 | remote_fileio_request (buf); | |
3023 | continue; | |
43ff13b4 JM |
3024 | case 'T': /* Status with PC, SP, FP, ... */ |
3025 | { | |
3026 | int i; | |
d9d9c31f | 3027 | char regs[MAX_REGISTER_SIZE]; |
43ff13b4 JM |
3028 | |
3029 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3030 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3031 | ss = signal number |
3032 | n... = register number | |
3033 | r... = register contents | |
3034 | */ | |
43ff13b4 JM |
3035 | p = &buf[3]; /* after Txx */ |
3036 | ||
3037 | while (*p) | |
3038 | { | |
3039 | unsigned char *p1; | |
3040 | char *p_temp; | |
6c3f2dbf | 3041 | int fieldsize; |
3c3bea1c | 3042 | long pnum = 0; |
43ff13b4 | 3043 | |
3c3bea1c | 3044 | /* If the packet contains a register number, save it in pnum |
802188a7 | 3045 | and set p1 to point to the character following it. |
3c3bea1c GS |
3046 | Otherwise p1 points to p. */ |
3047 | ||
3048 | /* If this packet is an awatch packet, don't parse the 'a' | |
3049 | as a register number. */ | |
802188a7 | 3050 | |
3c3bea1c GS |
3051 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3052 | { | |
3053 | /* Read the register number. */ | |
3054 | pnum = strtol (p, &p_temp, 16); | |
3055 | p1 = (unsigned char *) p_temp; | |
3056 | } | |
802188a7 | 3057 | else |
3c3bea1c | 3058 | p1 = p; |
43ff13b4 | 3059 | |
c5aa993b | 3060 | if (p1 == p) /* No register number present here */ |
43ff13b4 | 3061 | { |
3c3bea1c | 3062 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 | 3063 | if (p1 == NULL) |
3fcb8548 AC |
3064 | error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n", |
3065 | p, buf); | |
3c3bea1c | 3066 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3067 | { |
3068 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3069 | record_currthread (thread_num); | |
3070 | p = (unsigned char *) p_temp; | |
3071 | } | |
3c3bea1c GS |
3072 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3073 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3074 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3075 | { | |
3076 | remote_stopped_by_watchpoint_p = 1; | |
3077 | p = unpack_varlen_hex (++p1, &addr); | |
3078 | remote_watch_data_address = (CORE_ADDR)addr; | |
3079 | } | |
3080 | else | |
3081 | { | |
3082 | /* Silently skip unknown optional info. */ | |
3083 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3084 | if (p_temp) | |
3085 | p = p_temp; | |
3086 | } | |
43ff13b4 | 3087 | } |
802188a7 | 3088 | |
43ff13b4 JM |
3089 | else |
3090 | { | |
ad10f812 | 3091 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3092 | p = p1; |
43ff13b4 | 3093 | if (*p++ != ':') |
3fcb8548 AC |
3094 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
3095 | p, buf); | |
43ff13b4 | 3096 | |
ad10f812 | 3097 | if (reg == NULL) |
3fcb8548 AC |
3098 | error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n", |
3099 | pnum, p, buf); | |
43ff13b4 | 3100 | |
3acba339 | 3101 | fieldsize = hex2bin (p, regs, register_size (current_gdbarch, reg->regnum)); |
6c3f2dbf | 3102 | p += 2 * fieldsize; |
3acba339 | 3103 | if (fieldsize < register_size (current_gdbarch, reg->regnum)) |
30559e10 | 3104 | warning ("Remote reply is too short: %s", buf); |
23a6d369 | 3105 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3106 | } |
3107 | ||
3108 | if (*p++ != ';') | |
0a2cfde4 AC |
3109 | error ("Remote register badly formatted: %s\nhere: %s", |
3110 | buf, p); | |
43ff13b4 JM |
3111 | } |
3112 | } | |
3113 | /* fall through */ | |
3114 | case 'S': /* Old style status, just signal only */ | |
3115 | status->kind = TARGET_WAITKIND_STOPPED; | |
3116 | status->value.sig = (enum target_signal) | |
3117 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3118 | ||
3119 | if (buf[3] == 'p') | |
3120 | { | |
43ff13b4 JM |
3121 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3122 | record_currthread (thread_num); | |
3123 | } | |
43ff13b4 | 3124 | goto got_status; |
43ff13b4 JM |
3125 | case 'W': /* Target exited */ |
3126 | { | |
3127 | /* The remote process exited. */ | |
3128 | status->kind = TARGET_WAITKIND_EXITED; | |
3129 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3130 | goto got_status; | |
3131 | } | |
3132 | case 'X': | |
3133 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3134 | status->value.sig = (enum target_signal) | |
3135 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3136 | kill_kludge = 1; | |
3137 | ||
3138 | goto got_status; | |
3139 | case 'O': /* Console output */ | |
3140 | remote_console_output (buf + 1); | |
c4093a6a JM |
3141 | /* Return immediately to the event loop. The event loop will |
3142 | still be waiting on the inferior afterwards. */ | |
3143 | status->kind = TARGET_WAITKIND_IGNORE; | |
3144 | goto got_status; | |
43ff13b4 JM |
3145 | case '\0': |
3146 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3147 | { | |
3148 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3149 | the remote system doesn't support it. */ |
43ff13b4 JM |
3150 | target_terminal_ours_for_output (); |
3151 | printf_filtered | |
3152 | ("Can't send signals to this remote system. %s not sent.\n", | |
3153 | target_signal_to_name (last_sent_signal)); | |
3154 | last_sent_signal = TARGET_SIGNAL_0; | |
3155 | target_terminal_inferior (); | |
3156 | ||
3157 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3158 | putpkt ((char *) buf); | |
3159 | continue; | |
3160 | } | |
3161 | /* else fallthrough */ | |
3162 | default: | |
3163 | warning ("Invalid remote reply: %s", buf); | |
3164 | continue; | |
3165 | } | |
3166 | } | |
c5aa993b | 3167 | got_status: |
43ff13b4 JM |
3168 | if (thread_num != -1) |
3169 | { | |
39f77062 | 3170 | return pid_to_ptid (thread_num); |
43ff13b4 | 3171 | } |
39f77062 | 3172 | return inferior_ptid; |
43ff13b4 JM |
3173 | } |
3174 | ||
c906108c SS |
3175 | /* Number of bytes of registers this stub implements. */ |
3176 | ||
3177 | static int register_bytes_found; | |
3178 | ||
3179 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3180 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3181 | |
b96ec7ac AC |
3182 | static int |
3183 | fetch_register_using_p (int regnum) | |
3184 | { | |
3185 | struct remote_state *rs = get_remote_state (); | |
3186 | char *buf = alloca (rs->remote_packet_size), *p; | |
3187 | char regp[MAX_REGISTER_SIZE]; | |
3188 | int i; | |
3189 | ||
fcad0fa4 JB |
3190 | p = buf; |
3191 | *p++ = 'p'; | |
3192 | p += hexnumstr (p, regnum); | |
3193 | *p++ = '\0'; | |
b96ec7ac AC |
3194 | remote_send (buf, rs->remote_packet_size); |
3195 | if (buf[0] != 0 && buf[0] != 'E') { | |
1ee455f4 JB |
3196 | p = buf; |
3197 | i = 0; | |
3198 | while (p[0] != 0) { | |
3199 | if (p[1] == 0) { | |
3200 | error("fetch_register_using_p: early buf termination"); | |
3201 | return 0; | |
3202 | } | |
3203 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3204 | p += 2; | |
b96ec7ac AC |
3205 | } |
3206 | regcache_raw_supply (current_regcache, regnum, regp); | |
3207 | return 1; | |
1ee455f4 | 3208 | } |
b96ec7ac | 3209 | |
1ee455f4 | 3210 | return 0; |
b96ec7ac AC |
3211 | } |
3212 | ||
c906108c | 3213 | static void |
ad10f812 | 3214 | remote_fetch_registers (int regnum) |
c906108c | 3215 | { |
d01949b6 AC |
3216 | struct remote_state *rs = get_remote_state (); |
3217 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3218 | int i; |
3219 | char *p; | |
ad10f812 | 3220 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3221 | |
39f77062 | 3222 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3223 | |
b323314b AC |
3224 | if (regnum >= 0) |
3225 | { | |
3226 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3227 | gdb_assert (reg != NULL); | |
3228 | if (!reg->in_g_packet) | |
3229 | internal_error (__FILE__, __LINE__, | |
3230 | "Attempt to fetch a non G-packet register when this " | |
3231 | "remote.c does not support the p-packet."); | |
3232 | } | |
b96ec7ac AC |
3233 | switch (remote_protocol_p.support) |
3234 | { | |
3235 | case PACKET_DISABLE: | |
3236 | break; | |
3237 | case PACKET_ENABLE: | |
3238 | if (fetch_register_using_p (regnum)) | |
3239 | return; | |
3240 | else | |
3241 | error ("Protocol error: p packet not recognized by stub"); | |
3242 | case PACKET_SUPPORT_UNKNOWN: | |
3243 | if (fetch_register_using_p (regnum)) | |
3244 | { | |
3245 | /* The stub recognized the 'p' packet. Remember this. */ | |
3246 | remote_protocol_p.support = PACKET_ENABLE; | |
3247 | return; | |
3248 | } | |
3249 | else | |
3250 | { | |
3251 | /* The stub does not support the 'P' packet. Use 'G' | |
3252 | instead, and don't try using 'P' in the future (it | |
3253 | will just waste our time). */ | |
3254 | remote_protocol_p.support = PACKET_DISABLE; | |
3255 | break; | |
3256 | } | |
3257 | } | |
b323314b | 3258 | |
c906108c | 3259 | sprintf (buf, "g"); |
d01949b6 | 3260 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3261 | |
11cf8741 JM |
3262 | /* Save the size of the packet sent to us by the target. Its used |
3263 | as a heuristic when determining the max size of packets that the | |
3264 | target can safely receive. */ | |
d01949b6 AC |
3265 | if ((rs->actual_register_packet_size) == 0) |
3266 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3267 | |
3268 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3269 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3270 | |
3271 | /* We can get out of synch in various cases. If the first character | |
3272 | in the buffer is not a hex character, assume that has happened | |
3273 | and try to fetch another packet to read. */ | |
3274 | while ((buf[0] < '0' || buf[0] > '9') | |
3275 | && (buf[0] < 'a' || buf[0] > 'f') | |
3276 | && buf[0] != 'x') /* New: unavailable register value */ | |
3277 | { | |
3278 | if (remote_debug) | |
0f71a2f6 JM |
3279 | fprintf_unfiltered (gdb_stdlog, |
3280 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3281 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3282 | } |
3283 | ||
3284 | /* Reply describes registers byte by byte, each byte encoded as two | |
3285 | hex characters. Suck them all up, then supply them to the | |
3286 | register cacheing/storage mechanism. */ | |
3287 | ||
3288 | p = buf; | |
ad10f812 | 3289 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3290 | { |
3291 | if (p[0] == 0) | |
3292 | break; | |
3293 | if (p[1] == 0) | |
3294 | { | |
3295 | warning ("Remote reply is of odd length: %s", buf); | |
3296 | /* Don't change register_bytes_found in this case, and don't | |
3297 | print a second warning. */ | |
3298 | goto supply_them; | |
3299 | } | |
3300 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3301 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3302 | else |
3303 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3304 | p += 2; | |
3305 | } | |
3306 | ||
3307 | if (i != register_bytes_found) | |
3308 | { | |
3309 | register_bytes_found = i; | |
2649061d AC |
3310 | if (REGISTER_BYTES_OK_P () |
3311 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3312 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3313 | } |
c5aa993b | 3314 | |
b323314b | 3315 | supply_them: |
ad10f812 | 3316 | { |
b323314b AC |
3317 | int i; |
3318 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3319 | { |
b323314b AC |
3320 | struct packet_reg *r = &rs->regs[i]; |
3321 | if (r->in_g_packet) | |
3322 | { | |
8ccc1287 AC |
3323 | if (r->offset * 2 >= strlen (buf)) |
3324 | /* A short packet that didn't include the register's | |
3325 | value, this implies that the register is zero (and | |
3326 | not that the register is unavailable). Supply that | |
3327 | zero value. */ | |
3328 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3329 | else if (buf[r->offset * 2] == 'x') | |
3330 | { | |
3331 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3332 | /* The register isn't available, mark it as such (at | |
3333 | the same time setting the value to zero). */ | |
3334 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3335 | set_register_cached (i, -1); | |
3336 | } | |
3337 | else | |
3338 | regcache_raw_supply (current_regcache, r->regnum, | |
3339 | regs + r->offset); | |
b323314b | 3340 | } |
ad10f812 AC |
3341 | } |
3342 | } | |
c906108c SS |
3343 | } |
3344 | ||
3345 | /* Prepare to store registers. Since we may send them all (using a | |
3346 | 'G' request), we have to read out the ones we don't want to change | |
3347 | first. */ | |
3348 | ||
c5aa993b | 3349 | static void |
fba45db2 | 3350 | remote_prepare_to_store (void) |
c906108c | 3351 | { |
cf0e1e0d DJ |
3352 | struct remote_state *rs = get_remote_state (); |
3353 | int i; | |
3354 | char buf[MAX_REGISTER_SIZE]; | |
3355 | ||
c906108c | 3356 | /* Make sure the entire registers array is valid. */ |
5a2468f5 JM |
3357 | switch (remote_protocol_P.support) |
3358 | { | |
3359 | case PACKET_DISABLE: | |
3360 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3361 | /* Make sure all the necessary registers are cached. */ |
3362 | for (i = 0; i < NUM_REGS; i++) | |
3363 | if (rs->regs[i].in_g_packet) | |
3364 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3365 | break; |
3366 | case PACKET_ENABLE: | |
3367 | break; | |
3368 | } | |
3369 | } | |
3370 | ||
ad10f812 | 3371 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
5a2468f5 JM |
3372 | packet was not recognized. */ |
3373 | ||
3374 | static int | |
ad10f812 | 3375 | store_register_using_P (int regnum) |
5a2468f5 | 3376 | { |
d01949b6 | 3377 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3378 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3379 | /* Try storing a single register. */ |
d01949b6 | 3380 | char *buf = alloca (rs->remote_packet_size); |
d9d9c31f | 3381 | char regp[MAX_REGISTER_SIZE]; |
5a2468f5 JM |
3382 | char *p; |
3383 | int i; | |
3384 | ||
ad10f812 | 3385 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3386 | p = buf + strlen (buf); |
822c9732 | 3387 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3388 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
ad10f812 | 3389 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3390 | |
3391 | return buf[0] != '\0'; | |
c906108c SS |
3392 | } |
3393 | ||
5a2468f5 | 3394 | |
ad10f812 | 3395 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents |
7302a204 | 3396 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3397 | |
3398 | static void | |
ad10f812 | 3399 | remote_store_registers (int regnum) |
c906108c | 3400 | { |
d01949b6 | 3401 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3402 | char *buf; |
3403 | char *regs; | |
c906108c SS |
3404 | int i; |
3405 | char *p; | |
3406 | ||
39f77062 | 3407 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3408 | |
ad10f812 | 3409 | if (regnum >= 0) |
c906108c | 3410 | { |
5a2468f5 | 3411 | switch (remote_protocol_P.support) |
c906108c | 3412 | { |
5a2468f5 JM |
3413 | case PACKET_DISABLE: |
3414 | break; | |
3415 | case PACKET_ENABLE: | |
ad10f812 | 3416 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3417 | return; |
3418 | else | |
3419 | error ("Protocol error: P packet not recognized by stub"); | |
3420 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3421 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3422 | { |
3423 | /* The stub recognized the 'P' packet. Remember this. */ | |
3424 | remote_protocol_P.support = PACKET_ENABLE; | |
3425 | return; | |
3426 | } | |
3427 | else | |
3428 | { | |
3429 | /* The stub does not support the 'P' packet. Use 'G' | |
3430 | instead, and don't try using 'P' in the future (it | |
3431 | will just waste our time). */ | |
3432 | remote_protocol_P.support = PACKET_DISABLE; | |
3433 | break; | |
3434 | } | |
c906108c | 3435 | } |
c906108c SS |
3436 | } |
3437 | ||
193cb69f AC |
3438 | /* Extract all the registers in the regcache copying them into a |
3439 | local buffer. */ | |
3440 | { | |
b323314b | 3441 | int i; |
ad10f812 AC |
3442 | regs = alloca (rs->sizeof_g_packet); |
3443 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3444 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3445 | { |
b323314b AC |
3446 | struct packet_reg *r = &rs->regs[i]; |
3447 | if (r->in_g_packet) | |
822c9732 | 3448 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3449 | } |
3450 | } | |
c906108c SS |
3451 | |
3452 | /* Command describes registers byte by byte, | |
3453 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3454 | buf = alloca (rs->remote_packet_size); |
3455 | p = buf; | |
3456 | *p++ = 'G'; | |
c906108c | 3457 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3458 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3459 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3460 | } |
c906108c SS |
3461 | \f |
3462 | ||
3463 | /* Return the number of hex digits in num. */ | |
3464 | ||
3465 | static int | |
fba45db2 | 3466 | hexnumlen (ULONGEST num) |
c906108c SS |
3467 | { |
3468 | int i; | |
3469 | ||
3470 | for (i = 0; num != 0; i++) | |
3471 | num >>= 4; | |
3472 | ||
3473 | return max (i, 1); | |
3474 | } | |
3475 | ||
2df3850c | 3476 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3477 | |
3478 | static int | |
fba45db2 | 3479 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3480 | { |
c906108c | 3481 | int len = hexnumlen (num); |
2df3850c JM |
3482 | return hexnumnstr (buf, num, len); |
3483 | } | |
3484 | ||
c906108c | 3485 | |
2df3850c | 3486 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3487 | |
2df3850c | 3488 | static int |
fba45db2 | 3489 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3490 | { |
3491 | int i; | |
3492 | ||
3493 | buf[width] = '\0'; | |
3494 | ||
3495 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3496 | { |
c5aa993b | 3497 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3498 | num >>= 4; |
3499 | } | |
3500 | ||
2df3850c | 3501 | return width; |
c906108c SS |
3502 | } |
3503 | ||
3504 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3505 | ||
3506 | static CORE_ADDR | |
fba45db2 | 3507 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3508 | { |
3509 | if (remote_address_size > 0 | |
3510 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3511 | { | |
3512 | /* Only create a mask when that mask can safely be constructed | |
3513 | in a ULONGEST variable. */ | |
3514 | ULONGEST mask = 1; | |
3515 | mask = (mask << remote_address_size) - 1; | |
3516 | addr &= mask; | |
3517 | } | |
3518 | return addr; | |
3519 | } | |
3520 | ||
3521 | /* Determine whether the remote target supports binary downloading. | |
3522 | This is accomplished by sending a no-op memory write of zero length | |
3523 | to the target at the specified address. It does not suffice to send | |
3524 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3525 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3526 | ||
96baa820 JM |
3527 | NOTE: This can still lose if the serial line is not eight-bit |
3528 | clean. In cases like this, the user should clear "remote | |
3529 | X-packet". */ | |
3530 | ||
c906108c | 3531 | static void |
fba45db2 | 3532 | check_binary_download (CORE_ADDR addr) |
c906108c | 3533 | { |
d01949b6 | 3534 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3535 | switch (remote_protocol_binary_download.support) |
c906108c | 3536 | { |
96baa820 JM |
3537 | case PACKET_DISABLE: |
3538 | break; | |
3539 | case PACKET_ENABLE: | |
3540 | break; | |
3541 | case PACKET_SUPPORT_UNKNOWN: | |
3542 | { | |
d01949b6 | 3543 | char *buf = alloca (rs->remote_packet_size); |
96baa820 | 3544 | char *p; |
802188a7 | 3545 | |
96baa820 JM |
3546 | p = buf; |
3547 | *p++ = 'X'; | |
3548 | p += hexnumstr (p, (ULONGEST) addr); | |
3549 | *p++ = ','; | |
3550 | p += hexnumstr (p, (ULONGEST) 0); | |
3551 | *p++ = ':'; | |
3552 | *p = '\0'; | |
802188a7 | 3553 | |
96baa820 | 3554 | putpkt_binary (buf, (int) (p - buf)); |
d01949b6 | 3555 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3556 | |
96baa820 JM |
3557 | if (buf[0] == '\0') |
3558 | { | |
3559 | if (remote_debug) | |
3560 | fprintf_unfiltered (gdb_stdlog, | |
3561 | "binary downloading NOT suppported by target\n"); | |
3562 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3563 | } | |
3564 | else | |
3565 | { | |
3566 | if (remote_debug) | |
3567 | fprintf_unfiltered (gdb_stdlog, | |
3568 | "binary downloading suppported by target\n"); | |
3569 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3570 | } | |
3571 | break; | |
3572 | } | |
c906108c SS |
3573 | } |
3574 | } | |
3575 | ||
3576 | /* Write memory data directly to the remote machine. | |
3577 | This does not inform the data cache; the data cache uses this. | |
3578 | MEMADDR is the address in the remote memory space. | |
3579 | MYADDR is the address of the buffer in our space. | |
3580 | LEN is the number of bytes. | |
3581 | ||
917317f4 JM |
3582 | Returns number of bytes transferred, or 0 (setting errno) for |
3583 | error. Only transfer a single packet. */ | |
c906108c | 3584 | |
449092f6 | 3585 | int |
917317f4 | 3586 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3587 | { |
917317f4 | 3588 | unsigned char *buf; |
917317f4 JM |
3589 | unsigned char *p; |
3590 | unsigned char *plen; | |
c2d11a7d | 3591 | long sizeof_buf; |
917317f4 JM |
3592 | int plenlen; |
3593 | int todo; | |
3594 | int nr_bytes; | |
a257b5bb AC |
3595 | int payload_size; |
3596 | unsigned char *payload_start; | |
c906108c | 3597 | |
a257b5bb | 3598 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3599 | check_binary_download (memaddr); |
3600 | ||
a257b5bb AC |
3601 | /* Compute the size, and then allocate space for the largest |
3602 | possible packet. Include space for an extra trailing NUL. */ | |
3603 | sizeof_buf = get_memory_write_packet_size () + 1; | |
c2d11a7d | 3604 | buf = alloca (sizeof_buf); |
c906108c | 3605 | |
a257b5bb AC |
3606 | /* Compute the size of the actual payload by subtracting out the |
3607 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ | |
3608 | payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN") | |
3609 | + hexnumlen (memaddr) | |
3610 | + hexnumlen (len))); | |
c906108c | 3611 | |
a257b5bb | 3612 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3613 | |
a257b5bb | 3614 | /* Append "[XM]". Compute a best guess of the number of bytes |
917317f4 | 3615 | actually transfered. */ |
a257b5bb | 3616 | p = buf; |
917317f4 | 3617 | switch (remote_protocol_binary_download.support) |
c906108c | 3618 | { |
917317f4 JM |
3619 | case PACKET_ENABLE: |
3620 | *p++ = 'X'; | |
3621 | /* Best guess at number of bytes that will fit. */ | |
a257b5bb | 3622 | todo = min (len, payload_size); |
917317f4 JM |
3623 | break; |
3624 | case PACKET_DISABLE: | |
3625 | *p++ = 'M'; | |
3626 | /* num bytes that will fit */ | |
a257b5bb | 3627 | todo = min (len, payload_size / 2); |
917317f4 JM |
3628 | break; |
3629 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3630 | internal_error (__FILE__, __LINE__, |
3631 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3632 | default: |
8e65ff28 | 3633 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 | 3634 | } |
802188a7 | 3635 | |
a257b5bb | 3636 | /* Append "<memaddr>". */ |
917317f4 JM |
3637 | memaddr = remote_address_masked (memaddr); |
3638 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3639 | |
3640 | /* Append ",". */ | |
917317f4 | 3641 | *p++ = ','; |
802188a7 | 3642 | |
a257b5bb AC |
3643 | /* Append <len>. Retain the location/size of <len>. It may need to |
3644 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3645 | plen = p; |
3646 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3647 | p += plenlen; | |
a257b5bb AC |
3648 | |
3649 | /* Append ":". */ | |
917317f4 JM |
3650 | *p++ = ':'; |
3651 | *p = '\0'; | |
802188a7 | 3652 | |
a257b5bb AC |
3653 | /* Append the packet body. */ |
3654 | payload_start = p; | |
917317f4 JM |
3655 | switch (remote_protocol_binary_download.support) |
3656 | { | |
3657 | case PACKET_ENABLE: | |
3658 | /* Binary mode. Send target system values byte by byte, in | |
3659 | increasing byte addresses. Only escape certain critical | |
3660 | characters. */ | |
3661 | for (nr_bytes = 0; | |
a257b5bb | 3662 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3663 | nr_bytes++) |
c906108c | 3664 | { |
917317f4 JM |
3665 | switch (myaddr[nr_bytes] & 0xff) |
3666 | { | |
3667 | case '$': | |
3668 | case '#': | |
3669 | case 0x7d: | |
3670 | /* These must be escaped */ | |
3671 | *p++ = 0x7d; | |
3672 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3673 | break; | |
3674 | default: | |
3675 | *p++ = myaddr[nr_bytes] & 0xff; | |
3676 | break; | |
3677 | } | |
c906108c | 3678 | } |
917317f4 | 3679 | if (nr_bytes < todo) |
c906108c | 3680 | { |
802188a7 | 3681 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3682 | and we have actually sent fewer bytes than planned. |
3683 | Fix-up the length field of the packet. Use the same | |
3684 | number of characters as before. */ | |
917317f4 JM |
3685 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3686 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3687 | } |
917317f4 JM |
3688 | break; |
3689 | case PACKET_DISABLE: | |
3690 | /* Normal mode: Send target system values byte by byte, in | |
3691 | increasing byte addresses. Each byte is encoded as a two hex | |
3692 | value. */ | |
2644f393 | 3693 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3694 | p += 2 * nr_bytes; |
917317f4 JM |
3695 | break; |
3696 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3697 | internal_error (__FILE__, __LINE__, |
3698 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3699 | default: |
8e65ff28 | 3700 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3701 | } |
802188a7 | 3702 | |
917317f4 | 3703 | putpkt_binary (buf, (int) (p - buf)); |
c2d11a7d | 3704 | getpkt (buf, sizeof_buf, 0); |
802188a7 | 3705 | |
917317f4 JM |
3706 | if (buf[0] == 'E') |
3707 | { | |
3708 | /* There is no correspondance between what the remote protocol | |
3709 | uses for errors and errno codes. We would like a cleaner way | |
3710 | of representing errors (big enough to include errno codes, | |
3711 | bfd_error codes, and others). But for now just return EIO. */ | |
3712 | errno = EIO; | |
3713 | return 0; | |
3714 | } | |
802188a7 | 3715 | |
917317f4 JM |
3716 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer |
3717 | bytes than we'd planned. */ | |
3718 | return nr_bytes; | |
c906108c SS |
3719 | } |
3720 | ||
3721 | /* Read memory data directly from the remote machine. | |
3722 | This does not use the data cache; the data cache uses this. | |
3723 | MEMADDR is the address in the remote memory space. | |
3724 | MYADDR is the address of the buffer in our space. | |
3725 | LEN is the number of bytes. | |
3726 | ||
3727 | Returns number of bytes transferred, or 0 for error. */ | |
3728 | ||
917317f4 JM |
3729 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3730 | remote targets) shouldn't attempt to read the entire buffer. | |
3731 | Instead it should read a single packet worth of data and then | |
3732 | return the byte size of that packet to the caller. The caller (its | |
3733 | caller and its callers caller ;-) already contains code for | |
3734 | handling partial reads. */ | |
3735 | ||
449092f6 | 3736 | int |
fba45db2 | 3737 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3738 | { |
11cf8741 | 3739 | char *buf; |
c906108c | 3740 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3741 | long sizeof_buf; |
c906108c SS |
3742 | int origlen; |
3743 | ||
11cf8741 JM |
3744 | /* Create a buffer big enough for this packet. */ |
3745 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3746 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3747 | buf = alloca (sizeof_buf); | |
c906108c SS |
3748 | |
3749 | origlen = len; | |
3750 | while (len > 0) | |
3751 | { | |
c906108c SS |
3752 | char *p; |
3753 | int todo; | |
3754 | int i; | |
3755 | ||
c5aa993b | 3756 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3757 | |
3758 | /* construct "m"<memaddr>","<len>" */ | |
3759 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3760 | memaddr = remote_address_masked (memaddr); | |
3761 | p = buf; | |
3762 | *p++ = 'm'; | |
3763 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3764 | *p++ = ','; | |
3765 | p += hexnumstr (p, (ULONGEST) todo); | |
3766 | *p = '\0'; | |
3767 | ||
3768 | putpkt (buf); | |
c2d11a7d | 3769 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3770 | |
66504d44 MS |
3771 | if (buf[0] == 'E' |
3772 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3773 | && buf[3] == '\0') | |
c906108c SS |
3774 | { |
3775 | /* There is no correspondance between what the remote protocol uses | |
3776 | for errors and errno codes. We would like a cleaner way of | |
3777 | representing errors (big enough to include errno codes, bfd_error | |
3778 | codes, and others). But for now just return EIO. */ | |
3779 | errno = EIO; | |
3780 | return 0; | |
3781 | } | |
3782 | ||
c5aa993b JM |
3783 | /* Reply describes memory byte by byte, |
3784 | each byte encoded as two hex characters. */ | |
c906108c SS |
3785 | |
3786 | p = buf; | |
30559e10 | 3787 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3788 | { |
30559e10 MS |
3789 | /* Reply is short. This means that we were able to read |
3790 | only part of what we wanted to. */ | |
3791 | return i + (origlen - len); | |
c906108c SS |
3792 | } |
3793 | myaddr += todo; | |
3794 | memaddr += todo; | |
3795 | len -= todo; | |
3796 | } | |
3797 | return origlen; | |
3798 | } | |
3799 | \f | |
3800 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3801 | transferring to or from debugger address BUFFER. Write to inferior if |
3802 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3803 | for error. TARGET is unused. */ |
392a587b | 3804 | |
c906108c | 3805 | static int |
c338868a | 3806 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 3807 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3808 | struct target_ops *target) |
c906108c | 3809 | { |
392a587b JM |
3810 | CORE_ADDR targ_addr; |
3811 | int targ_len; | |
4930751a C |
3812 | int res; |
3813 | ||
f6684c31 AC |
3814 | /* Should this be the selected frame? */ |
3815 | gdbarch_remote_translate_xfer_address (current_gdbarch, current_regcache, | |
3816 | mem_addr, mem_len, | |
3817 | &targ_addr, &targ_len); | |
392a587b | 3818 | if (targ_len <= 0) |
c906108c | 3819 | return 0; |
c906108c | 3820 | |
4930751a C |
3821 | if (should_write) |
3822 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3823 | else | |
3824 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3825 | ||
3826 | return res; | |
c906108c SS |
3827 | } |
3828 | ||
c906108c | 3829 | static void |
fba45db2 | 3830 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3831 | { |
3832 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3833 | } | |
3834 | \f | |
3835 | /* Stuff for dealing with the packets which are part of this protocol. | |
3836 | See comment at top of file for details. */ | |
3837 | ||
3838 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3839 | ||
3840 | static int | |
fba45db2 | 3841 | readchar (int timeout) |
c906108c SS |
3842 | { |
3843 | int ch; | |
3844 | ||
2cd58942 | 3845 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3846 | |
2acceee2 JM |
3847 | if (ch >= 0) |
3848 | return (ch & 0x7f); | |
3849 | ||
3850 | switch ((enum serial_rc) ch) | |
c906108c SS |
3851 | { |
3852 | case SERIAL_EOF: | |
2acceee2 | 3853 | target_mourn_inferior (); |
c906108c | 3854 | error ("Remote connection closed"); |
2acceee2 | 3855 | /* no return */ |
c906108c SS |
3856 | case SERIAL_ERROR: |
3857 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3858 | /* no return */ |
c906108c | 3859 | case SERIAL_TIMEOUT: |
2acceee2 | 3860 | break; |
c906108c | 3861 | } |
2acceee2 | 3862 | return ch; |
c906108c SS |
3863 | } |
3864 | ||
3865 | /* Send the command in BUF to the remote machine, and read the reply | |
3866 | into BUF. Report an error if we get an error reply. */ | |
3867 | ||
3868 | static void | |
c2d11a7d JM |
3869 | remote_send (char *buf, |
3870 | long sizeof_buf) | |
c906108c SS |
3871 | { |
3872 | putpkt (buf); | |
c2d11a7d | 3873 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3874 | |
3875 | if (buf[0] == 'E') | |
3876 | error ("Remote failure reply: %s", buf); | |
3877 | } | |
3878 | ||
3879 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3880 | string notation. */ | |
3881 | ||
3882 | static void | |
fba45db2 | 3883 | print_packet (char *buf) |
c906108c SS |
3884 | { |
3885 | puts_filtered ("\""); | |
43e526b9 | 3886 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3887 | puts_filtered ("\""); |
3888 | } | |
3889 | ||
3890 | int | |
fba45db2 | 3891 | putpkt (char *buf) |
c906108c SS |
3892 | { |
3893 | return putpkt_binary (buf, strlen (buf)); | |
3894 | } | |
3895 | ||
3896 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 3897 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
3898 | to account for the $, # and checksum, and for a possible /0 if we are |
3899 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3900 | ||
3901 | static int | |
fba45db2 | 3902 | putpkt_binary (char *buf, int cnt) |
c906108c | 3903 | { |
d01949b6 | 3904 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3905 | int i; |
3906 | unsigned char csum = 0; | |
11cf8741 | 3907 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 3908 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 3909 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 3910 | |
c906108c SS |
3911 | int ch; |
3912 | int tcount = 0; | |
3913 | char *p; | |
3914 | ||
3915 | /* Copy the packet into buffer BUF2, encapsulating it | |
3916 | and giving it a checksum. */ | |
3917 | ||
c906108c SS |
3918 | p = buf2; |
3919 | *p++ = '$'; | |
3920 | ||
3921 | for (i = 0; i < cnt; i++) | |
3922 | { | |
3923 | csum += buf[i]; | |
3924 | *p++ = buf[i]; | |
3925 | } | |
3926 | *p++ = '#'; | |
3927 | *p++ = tohex ((csum >> 4) & 0xf); | |
3928 | *p++ = tohex (csum & 0xf); | |
3929 | ||
3930 | /* Send it over and over until we get a positive ack. */ | |
3931 | ||
3932 | while (1) | |
3933 | { | |
3934 | int started_error_output = 0; | |
3935 | ||
3936 | if (remote_debug) | |
3937 | { | |
3938 | *p = '\0'; | |
43e526b9 JM |
3939 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3940 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3941 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3942 | gdb_flush (gdb_stdlog); |
c906108c | 3943 | } |
2cd58942 | 3944 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
3945 | perror_with_name ("putpkt: write failed"); |
3946 | ||
3947 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3948 | while (1) | |
3949 | { | |
3950 | ch = readchar (remote_timeout); | |
3951 | ||
c5aa993b | 3952 | if (remote_debug) |
c906108c SS |
3953 | { |
3954 | switch (ch) | |
3955 | { | |
3956 | case '+': | |
1216fa2c | 3957 | case '-': |
c906108c SS |
3958 | case SERIAL_TIMEOUT: |
3959 | case '$': | |
3960 | if (started_error_output) | |
3961 | { | |
3962 | putchar_unfiltered ('\n'); | |
3963 | started_error_output = 0; | |
3964 | } | |
3965 | } | |
3966 | } | |
3967 | ||
3968 | switch (ch) | |
3969 | { | |
3970 | case '+': | |
3971 | if (remote_debug) | |
0f71a2f6 | 3972 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3973 | return 1; |
1216fa2c AC |
3974 | case '-': |
3975 | if (remote_debug) | |
3976 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3977 | case SERIAL_TIMEOUT: |
c5aa993b | 3978 | tcount++; |
c906108c SS |
3979 | if (tcount > 3) |
3980 | return 0; | |
3981 | break; /* Retransmit buffer */ | |
3982 | case '$': | |
3983 | { | |
40e3f985 FN |
3984 | if (remote_debug) |
3985 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
3986 | /* It's probably an old response sent because an ACK |
3987 | was lost. Gobble up the packet and ack it so it | |
3988 | doesn't get retransmitted when we resend this | |
3989 | packet. */ | |
40e3f985 | 3990 | read_frame (junkbuf, sizeof_junkbuf); |
d6f7abdf | 3991 | serial_write (remote_desc, "+", 1); |
c5aa993b | 3992 | continue; /* Now, go look for + */ |
c906108c SS |
3993 | } |
3994 | default: | |
3995 | if (remote_debug) | |
3996 | { | |
3997 | if (!started_error_output) | |
3998 | { | |
3999 | started_error_output = 1; | |
0f71a2f6 | 4000 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4001 | } |
0f71a2f6 | 4002 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4003 | } |
4004 | continue; | |
4005 | } | |
4006 | break; /* Here to retransmit */ | |
4007 | } | |
4008 | ||
4009 | #if 0 | |
4010 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4011 | able to get out next time we call QUIT, without anything as |
4012 | violent as interrupt_query. If we want to provide a way out of | |
4013 | here without getting to the next QUIT, it should be based on | |
4014 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4015 | if (quit_flag) |
4016 | { | |
4017 | quit_flag = 0; | |
4018 | interrupt_query (); | |
4019 | } | |
4020 | #endif | |
4021 | } | |
4022 | } | |
4023 | ||
4024 | /* Come here after finding the start of the frame. Collect the rest | |
4025 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4026 | compression. No more than sizeof_buf-1 characters are read so that |
4027 | the buffer can be NUL terminated. | |
c906108c | 4028 | |
c2d11a7d JM |
4029 | Returns -1 on error, number of characters in buffer (ignoring the |
4030 | trailing NULL) on success. (could be extended to return one of the | |
4031 | SERIAL status indications). */ | |
4032 | ||
4033 | static long | |
4034 | read_frame (char *buf, | |
4035 | long sizeof_buf) | |
c906108c SS |
4036 | { |
4037 | unsigned char csum; | |
c2d11a7d | 4038 | long bc; |
c906108c SS |
4039 | int c; |
4040 | ||
4041 | csum = 0; | |
c2d11a7d | 4042 | bc = 0; |
c906108c SS |
4043 | |
4044 | while (1) | |
4045 | { | |
c2d11a7d | 4046 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4047 | c = readchar (remote_timeout); |
c906108c SS |
4048 | switch (c) |
4049 | { | |
4050 | case SERIAL_TIMEOUT: | |
4051 | if (remote_debug) | |
0f71a2f6 | 4052 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4053 | return -1; |
c906108c SS |
4054 | case '$': |
4055 | if (remote_debug) | |
0f71a2f6 JM |
4056 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4057 | gdb_stdlog); | |
c2d11a7d | 4058 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4059 | case '#': |
4060 | { | |
4061 | unsigned char pktcsum; | |
e1b09194 AC |
4062 | int check_0 = 0; |
4063 | int check_1 = 0; | |
c906108c | 4064 | |
c2d11a7d | 4065 | buf[bc] = '\0'; |
c906108c | 4066 | |
e1b09194 AC |
4067 | check_0 = readchar (remote_timeout); |
4068 | if (check_0 >= 0) | |
4069 | check_1 = readchar (remote_timeout); | |
802188a7 | 4070 | |
e1b09194 AC |
4071 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4072 | { | |
4073 | if (remote_debug) | |
4074 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4075 | return -1; | |
4076 | } | |
4077 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4078 | { |
4079 | if (remote_debug) | |
4080 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4081 | return -1; | |
4082 | } | |
c906108c | 4083 | |
e1b09194 | 4084 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4085 | if (csum == pktcsum) |
c2d11a7d | 4086 | return bc; |
c906108c | 4087 | |
c5aa993b | 4088 | if (remote_debug) |
c906108c | 4089 | { |
0f71a2f6 | 4090 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4091 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4092 | pktcsum, csum); |
4093 | fputs_filtered (buf, gdb_stdlog); | |
4094 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4095 | } |
c2d11a7d JM |
4096 | /* Number of characters in buffer ignoring trailing |
4097 | NUL. */ | |
4098 | return -1; | |
c906108c SS |
4099 | } |
4100 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4101 | { |
4102 | int repeat; | |
4103 | csum += c; | |
c906108c | 4104 | |
b4501125 AC |
4105 | c = readchar (remote_timeout); |
4106 | csum += c; | |
4107 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
c906108c | 4108 | |
c2d11a7d JM |
4109 | /* The character before ``*'' is repeated. */ |
4110 | ||
802188a7 | 4111 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4112 | && bc > 0 |
fb6e5c55 | 4113 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4114 | { |
c2d11a7d JM |
4115 | memset (&buf[bc], buf[bc - 1], repeat); |
4116 | bc += repeat; | |
c2c6d25f JM |
4117 | continue; |
4118 | } | |
4119 | ||
c2d11a7d | 4120 | buf[bc] = '\0'; |
c2c6d25f JM |
4121 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4122 | puts_filtered (buf); | |
4123 | puts_filtered ("\n"); | |
c2d11a7d | 4124 | return -1; |
c2c6d25f | 4125 | } |
c906108c | 4126 | default: |
c2d11a7d | 4127 | if (bc < sizeof_buf - 1) |
c906108c | 4128 | { |
c2d11a7d | 4129 | buf[bc++] = c; |
c906108c SS |
4130 | csum += c; |
4131 | continue; | |
4132 | } | |
4133 | ||
c2d11a7d | 4134 | buf[bc] = '\0'; |
c906108c SS |
4135 | puts_filtered ("Remote packet too long: "); |
4136 | puts_filtered (buf); | |
4137 | puts_filtered ("\n"); | |
4138 | ||
c2d11a7d | 4139 | return -1; |
c906108c SS |
4140 | } |
4141 | } | |
4142 | } | |
4143 | ||
4144 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4145 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4146 | this is used (in synchronous mode) to wait for a target that is is | |
4147 | executing user code to stop. */ | |
d9fcf2fb JM |
4148 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4149 | don't have to change all the calls to getpkt to deal with the | |
4150 | return value, because at the moment I don't know what the right | |
4151 | thing to do it for those. */ | |
c906108c | 4152 | void |
c2d11a7d JM |
4153 | getpkt (char *buf, |
4154 | long sizeof_buf, | |
4155 | int forever) | |
d9fcf2fb JM |
4156 | { |
4157 | int timed_out; | |
4158 | ||
4159 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4160 | } | |
4161 | ||
4162 | ||
4163 | /* Read a packet from the remote machine, with error checking, and | |
4164 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4165 | this is used (in synchronous mode) to wait for a target that is is | |
4166 | executing user code to stop. If FOREVER == 0, this function is | |
4167 | allowed to time out gracefully and return an indication of this to | |
4168 | the caller. */ | |
3172dc30 | 4169 | static int |
d9fcf2fb JM |
4170 | getpkt_sane (char *buf, |
4171 | long sizeof_buf, | |
4172 | int forever) | |
c906108c SS |
4173 | { |
4174 | int c; | |
4175 | int tries; | |
4176 | int timeout; | |
4177 | int val; | |
4178 | ||
c5aa993b | 4179 | strcpy (buf, "timeout"); |
c906108c SS |
4180 | |
4181 | if (forever) | |
4182 | { | |
c906108c | 4183 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4184 | } |
4185 | ||
4186 | else | |
4187 | timeout = remote_timeout; | |
4188 | ||
4189 | #define MAX_TRIES 3 | |
4190 | ||
4191 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4192 | { | |
4193 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4194 | continuously, but if it pauses, we'll get a zero from readchar |
4195 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4196 | |
4197 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4198 | After that, we expect characters to arrive at a brisk pace. They |
4199 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4200 | |
4201 | do | |
4202 | { | |
4203 | c = readchar (timeout); | |
4204 | ||
4205 | if (c == SERIAL_TIMEOUT) | |
4206 | { | |
2acceee2 | 4207 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4208 | { |
2acceee2 | 4209 | QUIT; |
c906108c SS |
4210 | target_mourn_inferior (); |
4211 | error ("Watchdog has expired. Target detached.\n"); | |
4212 | } | |
c906108c | 4213 | if (remote_debug) |
0f71a2f6 | 4214 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4215 | goto retry; |
4216 | } | |
4217 | } | |
4218 | while (c != '$'); | |
4219 | ||
4220 | /* We've found the start of a packet, now collect the data. */ | |
4221 | ||
c2d11a7d | 4222 | val = read_frame (buf, sizeof_buf); |
c906108c | 4223 | |
c2d11a7d | 4224 | if (val >= 0) |
c906108c SS |
4225 | { |
4226 | if (remote_debug) | |
43e526b9 JM |
4227 | { |
4228 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4229 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4230 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4231 | } | |
2cd58942 | 4232 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4233 | return 0; |
c906108c SS |
4234 | } |
4235 | ||
4236 | /* Try the whole thing again. */ | |
4237 | retry: | |
2cd58942 | 4238 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4239 | } |
4240 | ||
4241 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4242 | ||
4243 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4244 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4245 | return 1; |
c906108c SS |
4246 | } |
4247 | \f | |
4248 | static void | |
fba45db2 | 4249 | remote_kill (void) |
c906108c SS |
4250 | { |
4251 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4252 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4253 | if (kill_kludge) | |
4254 | { | |
4255 | kill_kludge = 0; | |
4256 | target_mourn_inferior (); | |
4257 | return; | |
4258 | } | |
4259 | ||
4260 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4261 | speaking terms with the remote system. */ | |
c5aa993b | 4262 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4263 | |
4264 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4265 | we do or not. For the existing stubs, kill is a noop. */ | |
4266 | target_mourn_inferior (); | |
4267 | } | |
4268 | ||
43ff13b4 JM |
4269 | /* Async version of remote_kill. */ |
4270 | static void | |
fba45db2 | 4271 | remote_async_kill (void) |
43ff13b4 JM |
4272 | { |
4273 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4274 | if (target_is_async_p ()) |
2cd58942 | 4275 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4276 | |
4277 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4278 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4279 | if (kill_kludge) | |
4280 | { | |
4281 | kill_kludge = 0; | |
4282 | target_mourn_inferior (); | |
4283 | return; | |
4284 | } | |
4285 | ||
4286 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4287 | speaking terms with the remote system. */ | |
c5aa993b | 4288 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4289 | |
4290 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4291 | we do or not. For the existing stubs, kill is a noop. */ | |
4292 | target_mourn_inferior (); | |
4293 | } | |
4294 | ||
c906108c | 4295 | static void |
fba45db2 | 4296 | remote_mourn (void) |
c906108c SS |
4297 | { |
4298 | remote_mourn_1 (&remote_ops); | |
4299 | } | |
4300 | ||
53a5351d | 4301 | static void |
fba45db2 | 4302 | remote_async_mourn (void) |
53a5351d JM |
4303 | { |
4304 | remote_mourn_1 (&remote_async_ops); | |
4305 | } | |
4306 | ||
c906108c | 4307 | static void |
fba45db2 | 4308 | extended_remote_mourn (void) |
c906108c SS |
4309 | { |
4310 | /* We do _not_ want to mourn the target like this; this will | |
4311 | remove the extended remote target from the target stack, | |
802188a7 | 4312 | and the next time the user says "run" it'll fail. |
c906108c SS |
4313 | |
4314 | FIXME: What is the right thing to do here? */ | |
4315 | #if 0 | |
4316 | remote_mourn_1 (&extended_remote_ops); | |
4317 | #endif | |
4318 | } | |
4319 | ||
4320 | /* Worker function for remote_mourn. */ | |
4321 | static void | |
fba45db2 | 4322 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4323 | { |
4324 | unpush_target (target); | |
4325 | generic_mourn_inferior (); | |
4326 | } | |
4327 | ||
4328 | /* In the extended protocol we want to be able to do things like | |
4329 | "run" and have them basically work as expected. So we need | |
802188a7 | 4330 | a special create_inferior function. |
c906108c SS |
4331 | |
4332 | FIXME: One day add support for changing the exec file | |
4333 | we're debugging, arguments and an environment. */ | |
4334 | ||
4335 | static void | |
c27cda74 AC |
4336 | extended_remote_create_inferior (char *exec_file, char *args, char **env, |
4337 | int from_tty) | |
c906108c SS |
4338 | { |
4339 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4340 | the remote server. */ | |
4341 | remove_breakpoints (); | |
4342 | ||
4343 | /* Now restart the remote server. */ | |
4344 | extended_remote_restart (); | |
4345 | ||
4346 | /* Now put the breakpoints back in. This way we're safe if the | |
4347 | restart function works via a unix fork on the remote side. */ | |
4348 | insert_breakpoints (); | |
4349 | ||
4350 | /* Clean up from the last time we were running. */ | |
4351 | clear_proceed_status (); | |
4352 | ||
4353 | /* Let the remote process run. */ | |
4354 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4355 | } | |
4356 | ||
43ff13b4 JM |
4357 | /* Async version of extended_remote_create_inferior. */ |
4358 | static void | |
c27cda74 AC |
4359 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env, |
4360 | int from_tty) | |
43ff13b4 JM |
4361 | { |
4362 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4363 | the remote server. */ | |
4364 | remove_breakpoints (); | |
4365 | ||
4366 | /* If running asynchronously, register the target file descriptor | |
4367 | with the event loop. */ | |
362646f5 | 4368 | if (target_can_async_p ()) |
2acceee2 | 4369 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4370 | |
4371 | /* Now restart the remote server. */ | |
4372 | extended_remote_restart (); | |
4373 | ||
4374 | /* Now put the breakpoints back in. This way we're safe if the | |
4375 | restart function works via a unix fork on the remote side. */ | |
4376 | insert_breakpoints (); | |
4377 | ||
4378 | /* Clean up from the last time we were running. */ | |
4379 | clear_proceed_status (); | |
4380 | ||
4381 | /* Let the remote process run. */ | |
4382 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4383 | } | |
c906108c | 4384 | \f |
c5aa993b | 4385 | |
aaab4dba | 4386 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4387 | instruction than other targets; in those use |
4388 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4389 | Also, bi-endian targets may define | |
4390 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4391 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4392 | just call the standard routines that are in mem-break.c. */ | |
4393 | ||
4394 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4395 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4396 | the ARCH-OS-tdep.c code can override the default. */ | |
4397 | ||
4398 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4399 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4400 | #endif |
4401 | ||
7fec2c59 | 4402 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4403 | |
4404 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4405 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4406 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4407 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4408 | #endif |
4409 | ||
7fec2c59 AC |
4410 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4411 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4412 | |
7fec2c59 | 4413 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4414 | |
aaab4dba AC |
4415 | /* Insert a breakpoint on targets that don't have any better |
4416 | breakpoint support. We read the contents of the target location | |
4417 | and stash it, then overwrite it with a breakpoint instruction. | |
4418 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4419 | is a pointer to memory allocated for saving the target contents. | |
4420 | It is guaranteed by the caller to be long enough to save the number | |
4421 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4422 | |
4423 | static int | |
fba45db2 | 4424 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4425 | { |
d01949b6 | 4426 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4427 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4428 | int val; |
802188a7 | 4429 | #endif |
96baa820 JM |
4430 | int bp_size; |
4431 | ||
d471ea57 AC |
4432 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4433 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4434 | fails, and the user has explicitly requested the Z support then | |
4435 | report an error, otherwise, mark it disabled and go on. */ | |
802188a7 | 4436 | |
d471ea57 | 4437 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4438 | { |
d01949b6 | 4439 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4440 | char *p = buf; |
802188a7 | 4441 | |
0caabb7e | 4442 | addr = remote_address_masked (addr); |
96baa820 JM |
4443 | *(p++) = 'Z'; |
4444 | *(p++) = '0'; | |
4445 | *(p++) = ','; | |
0caabb7e AC |
4446 | p += hexnumstr (p, (ULONGEST) addr); |
4447 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4448 | sprintf (p, ",%d", bp_size); |
802188a7 | 4449 | |
96baa820 | 4450 | putpkt (buf); |
d01949b6 | 4451 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4452 | |
d471ea57 | 4453 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4454 | { |
d471ea57 AC |
4455 | case PACKET_ERROR: |
4456 | return -1; | |
4457 | case PACKET_OK: | |
4458 | return 0; | |
4459 | case PACKET_UNKNOWN: | |
4460 | break; | |
96baa820 JM |
4461 | } |
4462 | } | |
c906108c | 4463 | |
802188a7 | 4464 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4465 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4466 | ||
4467 | if (val == 0) | |
4468 | { | |
d7449b42 | 4469 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4470 | val = target_write_memory (addr, (char *) big_break_insn, |
4471 | sizeof big_break_insn); | |
4472 | else | |
4473 | val = target_write_memory (addr, (char *) little_break_insn, | |
4474 | sizeof little_break_insn); | |
4475 | } | |
4476 | ||
4477 | return val; | |
4478 | #else | |
4479 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4480 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4481 | } |
4482 | ||
4483 | static int | |
fba45db2 | 4484 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4485 | { |
d01949b6 | 4486 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4487 | int bp_size; |
4488 | ||
d471ea57 | 4489 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4490 | { |
d01949b6 | 4491 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4492 | char *p = buf; |
802188a7 | 4493 | |
96baa820 JM |
4494 | *(p++) = 'z'; |
4495 | *(p++) = '0'; | |
4496 | *(p++) = ','; | |
4497 | ||
0caabb7e AC |
4498 | addr = remote_address_masked (addr); |
4499 | p += hexnumstr (p, (ULONGEST) addr); | |
4500 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4501 | sprintf (p, ",%d", bp_size); |
802188a7 | 4502 | |
96baa820 | 4503 | putpkt (buf); |
d01949b6 | 4504 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4505 | |
4506 | return (buf[0] == 'E'); | |
4507 | } | |
4508 | ||
7fec2c59 | 4509 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4510 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4511 | #else | |
4512 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4513 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4514 | } |
4515 | ||
d471ea57 AC |
4516 | static int |
4517 | watchpoint_to_Z_packet (int type) | |
4518 | { | |
4519 | switch (type) | |
4520 | { | |
4521 | case hw_write: | |
4522 | return 2; | |
4523 | break; | |
4524 | case hw_read: | |
4525 | return 3; | |
4526 | break; | |
4527 | case hw_access: | |
4528 | return 4; | |
4529 | break; | |
4530 | default: | |
8e65ff28 AC |
4531 | internal_error (__FILE__, __LINE__, |
4532 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4533 | } |
4534 | } | |
4535 | ||
3c3bea1c | 4536 | static int |
fba45db2 | 4537 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4538 | { |
d01949b6 AC |
4539 | struct remote_state *rs = get_remote_state (); |
4540 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4541 | char *p; |
d471ea57 | 4542 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4543 | |
d471ea57 AC |
4544 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4545 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4546 | remote_protocol_Z[packet].name, | |
4547 | remote_protocol_Z[packet].title); | |
802188a7 | 4548 | |
d471ea57 | 4549 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4550 | p = strchr (buf, '\0'); |
4551 | addr = remote_address_masked (addr); | |
4552 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4553 | sprintf (p, ",%x", len); |
802188a7 | 4554 | |
96baa820 | 4555 | putpkt (buf); |
d01949b6 | 4556 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4557 | |
d471ea57 AC |
4558 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4559 | { | |
4560 | case PACKET_ERROR: | |
4561 | case PACKET_UNKNOWN: | |
4562 | return -1; | |
4563 | case PACKET_OK: | |
4564 | return 0; | |
4565 | } | |
8e65ff28 AC |
4566 | internal_error (__FILE__, __LINE__, |
4567 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4568 | } |
4569 | ||
d471ea57 | 4570 | |
3c3bea1c | 4571 | static int |
fba45db2 | 4572 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4573 | { |
d01949b6 AC |
4574 | struct remote_state *rs = get_remote_state (); |
4575 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4576 | char *p; |
d471ea57 AC |
4577 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4578 | ||
4579 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4580 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4581 | remote_protocol_Z[packet].name, | |
4582 | remote_protocol_Z[packet].title); | |
802188a7 | 4583 | |
d471ea57 | 4584 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4585 | p = strchr (buf, '\0'); |
4586 | addr = remote_address_masked (addr); | |
4587 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4588 | sprintf (p, ",%x", len); |
96baa820 | 4589 | putpkt (buf); |
d01949b6 | 4590 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4591 | |
d471ea57 AC |
4592 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4593 | { | |
4594 | case PACKET_ERROR: | |
4595 | case PACKET_UNKNOWN: | |
4596 | return -1; | |
4597 | case PACKET_OK: | |
4598 | return 0; | |
4599 | } | |
8e65ff28 AC |
4600 | internal_error (__FILE__, __LINE__, |
4601 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4602 | } |
4603 | ||
3c3bea1c | 4604 | |
501eef12 AC |
4605 | int remote_hw_watchpoint_limit = -1; |
4606 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4607 | |
b9362cc7 | 4608 | static int |
3c3bea1c | 4609 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4610 | { |
3c3bea1c GS |
4611 | if (type == bp_hardware_breakpoint) |
4612 | { | |
4613 | if (remote_hw_breakpoint_limit == 0) | |
4614 | return 0; | |
501eef12 AC |
4615 | else if (remote_hw_breakpoint_limit < 0) |
4616 | return 1; | |
3c3bea1c GS |
4617 | else if (cnt <= remote_hw_breakpoint_limit) |
4618 | return 1; | |
4619 | } | |
4620 | else | |
4621 | { | |
4622 | if (remote_hw_watchpoint_limit == 0) | |
4623 | return 0; | |
501eef12 AC |
4624 | else if (remote_hw_watchpoint_limit < 0) |
4625 | return 1; | |
3c3bea1c GS |
4626 | else if (ot) |
4627 | return -1; | |
4628 | else if (cnt <= remote_hw_watchpoint_limit) | |
4629 | return 1; | |
4630 | } | |
4631 | return -1; | |
4632 | } | |
4633 | ||
b9362cc7 | 4634 | static int |
3c3bea1c GS |
4635 | remote_stopped_by_watchpoint (void) |
4636 | { | |
4637 | return remote_stopped_by_watchpoint_p; | |
4638 | } | |
4639 | ||
7270d8f2 OF |
4640 | extern int stepped_after_stopped_by_watchpoint; |
4641 | ||
4aa7a7f5 JJ |
4642 | static int |
4643 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4644 | { |
4aa7a7f5 | 4645 | int rc = 0; |
7270d8f2 OF |
4646 | if (remote_stopped_by_watchpoint () |
4647 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4648 | { |
4649 | *addr_p = remote_watch_data_address; | |
4650 | rc = 1; | |
4651 | } | |
4652 | ||
4653 | return rc; | |
3c3bea1c GS |
4654 | } |
4655 | ||
4656 | ||
4657 | static int | |
4658 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4659 | { | |
4660 | int len = 0; | |
d01949b6 AC |
4661 | struct remote_state *rs = get_remote_state (); |
4662 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4663 | char *p = buf; |
802188a7 | 4664 | |
c8189ed1 GS |
4665 | /* The length field should be set to the size of a breakpoint |
4666 | instruction. */ | |
4667 | ||
802188a7 | 4668 | BREAKPOINT_FROM_PC (&addr, &len); |
3c3bea1c | 4669 | |
d471ea57 AC |
4670 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4671 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4672 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4673 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4674 | |
96baa820 JM |
4675 | *(p++) = 'Z'; |
4676 | *(p++) = '1'; | |
4677 | *(p++) = ','; | |
802188a7 | 4678 | |
96baa820 JM |
4679 | addr = remote_address_masked (addr); |
4680 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4681 | sprintf (p, ",%x", len); |
96baa820 JM |
4682 | |
4683 | putpkt (buf); | |
d01949b6 | 4684 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4685 | |
d471ea57 AC |
4686 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4687 | { | |
4688 | case PACKET_ERROR: | |
4689 | case PACKET_UNKNOWN: | |
4690 | return -1; | |
4691 | case PACKET_OK: | |
4692 | return 0; | |
4693 | } | |
8e65ff28 | 4694 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4695 | "remote_insert_hw_breakpoint: reached end of function"); |
96baa820 JM |
4696 | } |
4697 | ||
d471ea57 | 4698 | |
802188a7 | 4699 | static int |
3c3bea1c | 4700 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) |
96baa820 | 4701 | { |
3c3bea1c | 4702 | int len; |
d01949b6 AC |
4703 | struct remote_state *rs = get_remote_state (); |
4704 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4705 | char *p = buf; |
c8189ed1 GS |
4706 | |
4707 | /* The length field should be set to the size of a breakpoint | |
4708 | instruction. */ | |
4709 | ||
4710 | BREAKPOINT_FROM_PC (&addr, &len); | |
4711 | ||
d471ea57 AC |
4712 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4713 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4714 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4715 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4716 | |
96baa820 JM |
4717 | *(p++) = 'z'; |
4718 | *(p++) = '1'; | |
4719 | *(p++) = ','; | |
802188a7 | 4720 | |
96baa820 JM |
4721 | addr = remote_address_masked (addr); |
4722 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4723 | sprintf (p, ",%x", len); |
96baa820 JM |
4724 | |
4725 | putpkt(buf); | |
d01949b6 | 4726 | getpkt (buf, (rs->remote_packet_size), 0); |
802188a7 | 4727 | |
d471ea57 AC |
4728 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4729 | { | |
4730 | case PACKET_ERROR: | |
4731 | case PACKET_UNKNOWN: | |
4732 | return -1; | |
4733 | case PACKET_OK: | |
4734 | return 0; | |
4735 | } | |
8e65ff28 | 4736 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4737 | "remote_remove_hw_breakpoint: reached end of function"); |
96baa820 | 4738 | } |
96baa820 | 4739 | |
c906108c SS |
4740 | /* Some targets are only capable of doing downloads, and afterwards |
4741 | they switch to the remote serial protocol. This function provides | |
4742 | a clean way to get from the download target to the remote target. | |
4743 | It's basically just a wrapper so that we don't have to expose any | |
4744 | of the internal workings of remote.c. | |
4745 | ||
4746 | Prior to calling this routine, you should shutdown the current | |
4747 | target code, else you will get the "A program is being debugged | |
4748 | already..." message. Usually a call to pop_target() suffices. */ | |
4749 | ||
4750 | void | |
fba45db2 | 4751 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4752 | { |
4753 | printf_filtered ("Switching to remote protocol\n"); | |
4754 | remote_open (name, from_tty); | |
4755 | } | |
4756 | ||
c906108c SS |
4757 | /* Table used by the crc32 function to calcuate the checksum. */ |
4758 | ||
c5aa993b JM |
4759 | static unsigned long crc32_table[256] = |
4760 | {0, 0}; | |
c906108c SS |
4761 | |
4762 | static unsigned long | |
fba45db2 | 4763 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4764 | { |
c5aa993b | 4765 | if (!crc32_table[1]) |
c906108c SS |
4766 | { |
4767 | /* Initialize the CRC table and the decoding table. */ | |
4768 | int i, j; | |
4769 | unsigned int c; | |
4770 | ||
4771 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4772 | { |
4773 | for (c = i << 24, j = 8; j > 0; --j) | |
4774 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4775 | crc32_table[i] = c; | |
4776 | } | |
c906108c SS |
4777 | } |
4778 | ||
4779 | while (len--) | |
4780 | { | |
4781 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4782 | buf++; | |
4783 | } | |
4784 | return crc; | |
4785 | } | |
4786 | ||
4787 | /* compare-sections command | |
4788 | ||
4789 | With no arguments, compares each loadable section in the exec bfd | |
4790 | with the same memory range on the target, and reports mismatches. | |
4791 | Useful for verifying the image on the target against the exec file. | |
4792 | Depends on the target understanding the new "qCRC:" request. */ | |
4793 | ||
e514a9d6 JM |
4794 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4795 | target method (target verify memory) and generic version of the | |
4796 | actual command. This will allow other high-level code (especially | |
4797 | generic_load()) to make use of this target functionality. */ | |
4798 | ||
c906108c | 4799 | static void |
fba45db2 | 4800 | compare_sections_command (char *args, int from_tty) |
c906108c | 4801 | { |
d01949b6 | 4802 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4803 | asection *s; |
4804 | unsigned long host_crc, target_crc; | |
4805 | extern bfd *exec_bfd; | |
4806 | struct cleanup *old_chain; | |
085dd6e6 JM |
4807 | char *tmp; |
4808 | char *sectdata; | |
ce359b09 | 4809 | const char *sectname; |
d01949b6 | 4810 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4811 | bfd_size_type size; |
4812 | bfd_vma lma; | |
4813 | int matched = 0; | |
4814 | int mismatched = 0; | |
4815 | ||
4816 | if (!exec_bfd) | |
4817 | error ("command cannot be used without an exec file"); | |
4818 | if (!current_target.to_shortname || | |
4819 | strcmp (current_target.to_shortname, "remote") != 0) | |
4820 | error ("command can only be used with remote target"); | |
4821 | ||
c5aa993b | 4822 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4823 | { |
4824 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4825 | continue; /* skip non-loadable section */ |
c906108c | 4826 | |
2c500098 | 4827 | size = bfd_get_section_size (s); |
c906108c | 4828 | if (size == 0) |
c5aa993b | 4829 | continue; /* skip zero-length section */ |
c906108c | 4830 | |
ce359b09 | 4831 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4832 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4833 | continue; /* not the section selected by user */ |
c906108c | 4834 | |
c5aa993b | 4835 | matched = 1; /* do this section */ |
c906108c SS |
4836 | lma = s->lma; |
4837 | /* FIXME: assumes lma can fit into long */ | |
4838 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4839 | putpkt (buf); | |
4840 | ||
4841 | /* be clever; compute the host_crc before waiting for target reply */ | |
4842 | sectdata = xmalloc (size); | |
b8c9b27d | 4843 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4844 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4845 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4846 | ||
d01949b6 | 4847 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 4848 | if (buf[0] == 'E') |
823ca731 AC |
4849 | error ("target memory fault, section %s, range 0x%s -- 0x%s", |
4850 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4851 | if (buf[0] != 'C') |
4852 | error ("remote target does not support this operation"); | |
4853 | ||
4854 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4855 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4856 | ||
d4f3574e SS |
4857 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4858 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4859 | if (host_crc == target_crc) |
4860 | printf_filtered ("matched.\n"); | |
4861 | else | |
c5aa993b JM |
4862 | { |
4863 | printf_filtered ("MIS-MATCHED!\n"); | |
4864 | mismatched++; | |
4865 | } | |
c906108c SS |
4866 | |
4867 | do_cleanups (old_chain); | |
4868 | } | |
4869 | if (mismatched > 0) | |
4870 | warning ("One or more sections of the remote executable does not match\n\ | |
4871 | the loaded file\n"); | |
4872 | if (args && !matched) | |
4873 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4874 | } | |
4875 | ||
1e3ff5ad | 4876 | static LONGEST |
4b8a223f | 4877 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
8aa91c1e | 4878 | const char *annex, void *readbuf, const void *writebuf, |
1e3ff5ad | 4879 | ULONGEST offset, LONGEST len) |
c906108c | 4880 | { |
d01949b6 | 4881 | struct remote_state *rs = get_remote_state (); |
c906108c | 4882 | int i; |
d01949b6 | 4883 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 4884 | char *p2 = &buf2[0]; |
1e3ff5ad | 4885 | char query_type; |
c906108c | 4886 | |
21e3b9b9 DJ |
4887 | /* Handle memory using remote_xfer_memory. */ |
4888 | if (object == TARGET_OBJECT_MEMORY) | |
4889 | { | |
4890 | int xfered; | |
4891 | errno = 0; | |
4892 | ||
4893 | if (writebuf != NULL) | |
4894 | { | |
4895 | void *buffer = xmalloc (len); | |
4896 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4897 | memcpy (buffer, writebuf, len); | |
4898 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4899 | do_cleanups (cleanup); | |
4900 | } | |
4901 | else | |
4902 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4903 | ||
4904 | if (xfered > 0) | |
4905 | return xfered; | |
4906 | else if (xfered == 0 && errno == 0) | |
4907 | return 0; | |
4908 | else | |
4909 | return -1; | |
4910 | } | |
4911 | ||
4b8a223f AC |
4912 | /* Only handle reads. */ |
4913 | if (writebuf != NULL || readbuf == NULL) | |
4914 | return -1; | |
4915 | ||
1e3ff5ad AC |
4916 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4917 | objects!!! Instead specify new query packets. */ | |
4918 | switch (object) | |
c906108c | 4919 | { |
1e3ff5ad AC |
4920 | case TARGET_OBJECT_KOD: |
4921 | query_type = 'K'; | |
4922 | break; | |
4923 | case TARGET_OBJECT_AVR: | |
4924 | query_type = 'R'; | |
4925 | break; | |
802188a7 RM |
4926 | |
4927 | case TARGET_OBJECT_AUXV: | |
4928 | if (remote_protocol_qPart_auxv.support != PACKET_DISABLE) | |
4929 | { | |
4930 | unsigned int total = 0; | |
4931 | while (len > 0) | |
4932 | { | |
4933 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
4934 | snprintf (buf2, rs->remote_packet_size, | |
4935 | "qPart:auxv:read::%s,%s", | |
4936 | phex_nz (offset, sizeof offset), | |
4937 | phex_nz (n, sizeof n)); | |
4938 | i = putpkt (buf2); | |
4939 | if (i < 0) | |
4940 | return total > 0 ? total : i; | |
4941 | buf2[0] = '\0'; | |
4942 | getpkt (buf2, rs->remote_packet_size, 0); | |
4943 | if (packet_ok (buf2, &remote_protocol_qPart_auxv) != PACKET_OK) | |
4944 | return total > 0 ? total : -1; | |
4945 | if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0') | |
4946 | break; /* Got EOF indicator. */ | |
4947 | /* Got some data. */ | |
4948 | i = hex2bin (buf2, readbuf, len); | |
4949 | if (i > 0) | |
4950 | { | |
4951 | readbuf = (void *) ((char *) readbuf + i); | |
4952 | offset += i; | |
4953 | len -= i; | |
4954 | total += i; | |
4955 | } | |
4956 | } | |
4957 | return total; | |
4958 | } | |
4959 | return -1; | |
4960 | ||
1e3ff5ad | 4961 | default: |
c906108c SS |
4962 | return -1; |
4963 | } | |
4964 | ||
4b8a223f | 4965 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 4966 | buffer size. */ |
4b8a223f | 4967 | if (offset == 0 && len == 0) |
1e3ff5ad AC |
4968 | return (rs->remote_packet_size); |
4969 | /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is | |
4970 | not large enough let the caller. */ | |
4971 | if (len < (rs->remote_packet_size)) | |
4972 | return -1; | |
4973 | len = rs->remote_packet_size; | |
4974 | ||
c906108c | 4975 | /* except for querying the minimum buffer size, target must be open */ |
c5aa993b | 4976 | if (!remote_desc) |
c906108c SS |
4977 | error ("remote query is only available after target open"); |
4978 | ||
1e3ff5ad | 4979 | gdb_assert (annex != NULL); |
4b8a223f | 4980 | gdb_assert (readbuf != NULL); |
c906108c SS |
4981 | |
4982 | *p2++ = 'q'; | |
4983 | *p2++ = query_type; | |
4984 | ||
4985 | /* we used one buffer char for the remote protocol q command and another | |
4986 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4987 | plus one extra in case we are debugging (remote_debug), | |
4988 | we have PBUFZIZ - 7 left to pack the query string */ | |
4989 | i = 0; | |
1e3ff5ad | 4990 | while (annex[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c | 4991 | { |
1e3ff5ad AC |
4992 | /* Bad caller may have sent forbidden characters. */ |
4993 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
4994 | *p2++ = annex[i]; | |
c906108c SS |
4995 | i++; |
4996 | } | |
1e3ff5ad AC |
4997 | *p2 = '\0'; |
4998 | gdb_assert (annex[i] == '\0'); | |
c906108c SS |
4999 | |
5000 | i = putpkt (buf2); | |
c5aa993b JM |
5001 | if (i < 0) |
5002 | return i; | |
c906108c | 5003 | |
4b8a223f | 5004 | getpkt (readbuf, len, 0); |
c906108c | 5005 | |
4b8a223f | 5006 | return strlen (readbuf); |
c906108c SS |
5007 | } |
5008 | ||
96baa820 JM |
5009 | static void |
5010 | remote_rcmd (char *command, | |
d9fcf2fb | 5011 | struct ui_file *outbuf) |
96baa820 | 5012 | { |
d01949b6 | 5013 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5014 | int i; |
d01949b6 | 5015 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5016 | char *p = buf; |
5017 | ||
5018 | if (!remote_desc) | |
5019 | error ("remote rcmd is only available after target open"); | |
5020 | ||
7be570e7 JM |
5021 | /* Send a NULL command across as an empty command */ |
5022 | if (command == NULL) | |
5023 | command = ""; | |
5024 | ||
96baa820 JM |
5025 | /* The query prefix */ |
5026 | strcpy (buf, "qRcmd,"); | |
5027 | p = strchr (buf, '\0'); | |
5028 | ||
d01949b6 | 5029 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5030 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5031 | ||
5032 | /* Encode the actual command */ | |
30559e10 | 5033 | bin2hex (command, p, 0); |
96baa820 JM |
5034 | |
5035 | if (putpkt (buf) < 0) | |
5036 | error ("Communication problem with target\n"); | |
5037 | ||
5038 | /* get/display the response */ | |
5039 | while (1) | |
5040 | { | |
5041 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
5042 | buf[0] = '\0'; | |
d01949b6 | 5043 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5044 | if (buf[0] == '\0') |
5045 | error ("Target does not support this command\n"); | |
5046 | if (buf[0] == 'O' && buf[1] != 'K') | |
5047 | { | |
5048 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
5049 | continue; | |
5050 | } | |
5051 | if (strcmp (buf, "OK") == 0) | |
5052 | break; | |
7be570e7 JM |
5053 | if (strlen (buf) == 3 && buf[0] == 'E' |
5054 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5055 | { | |
5056 | error ("Protocol error with Rcmd"); | |
5057 | } | |
96baa820 JM |
5058 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5059 | { | |
5060 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5061 | fputc_unfiltered (c, outbuf); | |
5062 | } | |
5063 | break; | |
5064 | } | |
5065 | } | |
5066 | ||
c906108c | 5067 | static void |
fba45db2 | 5068 | packet_command (char *args, int from_tty) |
c906108c | 5069 | { |
d01949b6 AC |
5070 | struct remote_state *rs = get_remote_state (); |
5071 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5072 | |
c5aa993b | 5073 | if (!remote_desc) |
c906108c SS |
5074 | error ("command can only be used with remote target"); |
5075 | ||
c5aa993b | 5076 | if (!args) |
c906108c SS |
5077 | error ("remote-packet command requires packet text as argument"); |
5078 | ||
5079 | puts_filtered ("sending: "); | |
5080 | print_packet (args); | |
5081 | puts_filtered ("\n"); | |
5082 | putpkt (args); | |
5083 | ||
d01949b6 | 5084 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5085 | puts_filtered ("received: "); |
5086 | print_packet (buf); | |
5087 | puts_filtered ("\n"); | |
5088 | } | |
5089 | ||
5090 | #if 0 | |
5091 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
5092 | ||
a14ed312 | 5093 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5094 | |
a14ed312 | 5095 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5096 | |
a14ed312 | 5097 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5098 | |
a14ed312 | 5099 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5100 | |
a14ed312 | 5101 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 5102 | |
a14ed312 | 5103 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5104 | |
a14ed312 | 5105 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5106 | |
a14ed312 | 5107 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5108 | |
a14ed312 | 5109 | static void init_remote_threadtests (void); |
c906108c | 5110 | |
c5aa993b | 5111 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5112 | |
5113 | static void | |
fba45db2 | 5114 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5115 | { |
5116 | int sample_thread = SAMPLE_THREAD; | |
5117 | ||
5118 | printf_filtered ("Remote threadset test\n"); | |
5119 | set_thread (sample_thread, 1); | |
5120 | } | |
5121 | ||
5122 | ||
5123 | static void | |
fba45db2 | 5124 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5125 | { |
5126 | int sample_thread = SAMPLE_THREAD; | |
5127 | ||
39f77062 | 5128 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5129 | printf_filtered ("PASS: Thread alive test\n"); |
5130 | else | |
5131 | printf_filtered ("FAIL: Thread alive test\n"); | |
5132 | } | |
5133 | ||
a14ed312 | 5134 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5135 | |
5136 | void | |
fba45db2 | 5137 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5138 | { |
5139 | char hexid[20]; | |
5140 | ||
5141 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5142 | hexid[16] = 0; | |
5143 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5144 | } | |
5145 | ||
5146 | static void | |
fba45db2 | 5147 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5148 | { |
5149 | int startflag = 1; | |
5150 | threadref nextthread; | |
5151 | int done, result_count; | |
5152 | threadref threadlist[3]; | |
5153 | ||
5154 | printf_filtered ("Remote Threadlist test\n"); | |
5155 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5156 | &result_count, &threadlist[0])) | |
5157 | printf_filtered ("FAIL: threadlist test\n"); | |
5158 | else | |
5159 | { | |
5160 | threadref *scan = threadlist; | |
5161 | threadref *limit = scan + result_count; | |
5162 | ||
5163 | while (scan < limit) | |
5164 | output_threadid (" thread ", scan++); | |
5165 | } | |
5166 | } | |
5167 | ||
5168 | void | |
fba45db2 | 5169 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5170 | { |
5171 | output_threadid ("Threadid: ", &info->threadid); | |
5172 | printf_filtered ("Name: %s\n ", info->shortname); | |
5173 | printf_filtered ("State: %s\n", info->display); | |
5174 | printf_filtered ("other: %s\n\n", info->more_display); | |
5175 | } | |
5176 | ||
5177 | int | |
fba45db2 | 5178 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5179 | { |
5180 | int result; | |
5181 | int set; | |
5182 | struct gdb_ext_thread_info threadinfo; | |
5183 | ||
5184 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5185 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5186 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5187 | display_thread_info (&threadinfo); | |
5188 | return result; | |
5189 | } | |
5190 | ||
5191 | static void | |
fba45db2 | 5192 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5193 | { |
5194 | int athread = SAMPLE_THREAD; | |
5195 | threadref thread; | |
5196 | int set; | |
5197 | ||
5198 | int_to_threadref (&thread, athread); | |
5199 | printf_filtered ("Remote Threadinfo test\n"); | |
5200 | if (!get_and_display_threadinfo (&thread)) | |
5201 | printf_filtered ("FAIL cannot get thread info\n"); | |
5202 | } | |
5203 | ||
5204 | static int | |
fba45db2 | 5205 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5206 | { |
5207 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5208 | return get_and_display_threadinfo (ref); | |
5209 | } | |
5210 | ||
5211 | static void | |
fba45db2 | 5212 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5213 | { |
5214 | printf_filtered ("Remote Threadlist update test\n"); | |
5215 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5216 | } | |
5217 | ||
5218 | static void | |
5219 | init_remote_threadtests (void) | |
5220 | { | |
5221 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5222 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5223 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5224 | "Fetch and display info about one thread"); | |
5225 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5226 | "Test setting to a different thread"); | |
5227 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5228 | "Iterate through updating all remote thread info"); | |
5229 | add_com ("talive", class_obscure, threadalive_test, | |
5230 | " Remote thread alive test "); | |
5231 | } | |
5232 | ||
5233 | #endif /* 0 */ | |
5234 | ||
f3fb8c85 MS |
5235 | /* Convert a thread ID to a string. Returns the string in a static |
5236 | buffer. */ | |
5237 | ||
5238 | static char * | |
39f77062 | 5239 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5240 | { |
5241 | static char buf[30]; | |
5242 | ||
39f77062 | 5243 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5244 | return buf; |
5245 | } | |
5246 | ||
c906108c | 5247 | static void |
fba45db2 | 5248 | init_remote_ops (void) |
c906108c | 5249 | { |
c5aa993b | 5250 | remote_ops.to_shortname = "remote"; |
c906108c | 5251 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5252 | remote_ops.to_doc = |
c906108c | 5253 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5254 | Specify the serial device it is connected to\n\ |
5255 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5256 | remote_ops.to_open = remote_open; |
5257 | remote_ops.to_close = remote_close; | |
c906108c | 5258 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5259 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5260 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5261 | remote_ops.to_wait = remote_wait; |
5262 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5263 | remote_ops.to_store_registers = remote_store_registers; | |
5264 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5265 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5266 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5267 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5268 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5269 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5270 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5271 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5272 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5273 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5274 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5275 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5276 | remote_ops.to_kill = remote_kill; |
5277 | remote_ops.to_load = generic_load; | |
c906108c SS |
5278 | remote_ops.to_mourn_inferior = remote_mourn; |
5279 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5280 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5281 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5282 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5283 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5284 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5285 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5286 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5287 | remote_ops.to_has_all_memory = 1; |
5288 | remote_ops.to_has_memory = 1; | |
5289 | remote_ops.to_has_stack = 1; | |
5290 | remote_ops.to_has_registers = 1; | |
5291 | remote_ops.to_has_execution = 1; | |
5292 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5293 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5294 | } |
5295 | ||
5296 | /* Set up the extended remote vector by making a copy of the standard | |
5297 | remote vector and adding to it. */ | |
5298 | ||
5299 | static void | |
fba45db2 | 5300 | init_extended_remote_ops (void) |
c906108c SS |
5301 | { |
5302 | extended_remote_ops = remote_ops; | |
5303 | ||
0f71a2f6 | 5304 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5305 | extended_remote_ops.to_longname = |
c906108c | 5306 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5307 | extended_remote_ops.to_doc = |
c906108c SS |
5308 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5309 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5310 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5311 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5312 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5313 | } |
5314 | ||
6426a772 JM |
5315 | static int |
5316 | remote_can_async_p (void) | |
5317 | { | |
5318 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5319 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5320 | } |
5321 | ||
5322 | static int | |
5323 | remote_is_async_p (void) | |
5324 | { | |
5325 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5326 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5327 | } |
5328 | ||
2acceee2 JM |
5329 | /* Pass the SERIAL event on and up to the client. One day this code |
5330 | will be able to delay notifying the client of an event until the | |
5331 | point where an entire packet has been received. */ | |
5332 | ||
5333 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5334 | static void *async_client_context; | |
5335 | static serial_event_ftype remote_async_serial_handler; | |
5336 | ||
6426a772 | 5337 | static void |
819cc324 | 5338 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5339 | { |
2acceee2 JM |
5340 | /* Don't propogate error information up to the client. Instead let |
5341 | the client find out about the error by querying the target. */ | |
5342 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5343 | } | |
5344 | ||
5345 | static void | |
5346 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5347 | { | |
ed9a39eb | 5348 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5349 | internal_error (__FILE__, __LINE__, |
5350 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5351 | |
2acceee2 JM |
5352 | if (callback != NULL) |
5353 | { | |
2cd58942 | 5354 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5355 | async_client_callback = callback; |
5356 | async_client_context = context; | |
5357 | } | |
5358 | else | |
2cd58942 | 5359 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5360 | } |
5361 | ||
43ff13b4 JM |
5362 | /* Target async and target extended-async. |
5363 | ||
5364 | This are temporary targets, until it is all tested. Eventually | |
5365 | async support will be incorporated int the usual 'remote' | |
5366 | target. */ | |
5367 | ||
5368 | static void | |
c2d11a7d | 5369 | init_remote_async_ops (void) |
43ff13b4 JM |
5370 | { |
5371 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5372 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5373 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5374 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5375 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5376 | remote_async_ops.to_open = remote_async_open; |
5377 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5378 | remote_async_ops.to_detach = remote_detach; |
5379 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5380 | remote_async_ops.to_resume = remote_async_resume; |
5381 | remote_async_ops.to_wait = remote_async_wait; | |
5382 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5383 | remote_async_ops.to_store_registers = remote_store_registers; | |
5384 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5385 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5386 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5387 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5388 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5389 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5390 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5391 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5392 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5393 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5394 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5395 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5396 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5397 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5398 | remote_async_ops.to_kill = remote_async_kill; |
5399 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5400 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5401 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5402 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5403 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5404 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5405 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5406 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5407 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5408 | remote_async_ops.to_stratum = process_stratum; |
5409 | remote_async_ops.to_has_all_memory = 1; | |
5410 | remote_async_ops.to_has_memory = 1; | |
5411 | remote_async_ops.to_has_stack = 1; | |
5412 | remote_async_ops.to_has_registers = 1; | |
5413 | remote_async_ops.to_has_execution = 1; | |
5414 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5415 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5416 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5417 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5418 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5419 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5420 | } |
5421 | ||
5422 | /* Set up the async extended remote vector by making a copy of the standard | |
5423 | remote vector and adding to it. */ | |
5424 | ||
5425 | static void | |
c2d11a7d | 5426 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5427 | { |
5428 | extended_async_remote_ops = remote_async_ops; | |
5429 | ||
5430 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5431 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5432 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5433 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5434 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5435 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5436 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5437 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5438 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5439 | } | |
5440 | ||
5a2468f5 | 5441 | static void |
c2d11a7d | 5442 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5443 | { |
5a2468f5 JM |
5444 | } |
5445 | ||
d471ea57 AC |
5446 | static void |
5447 | show_remote_cmd (char *args, int from_tty) | |
5448 | { | |
e9e68a56 AC |
5449 | /* FIXME: cagney/2002-06-15: This function should iterate over |
5450 | remote_show_cmdlist for a list of sub commands to show. */ | |
5451 | show_remote_protocol_Z_packet_cmd (args, from_tty, NULL); | |
e9e68a56 | 5452 | show_remote_protocol_P_packet_cmd (args, from_tty, NULL); |
b96ec7ac | 5453 | show_remote_protocol_p_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 5454 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL); |
506fb367 | 5455 | show_remote_protocol_vcont_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 5456 | show_remote_protocol_binary_download_cmd (args, from_tty, NULL); |
802188a7 | 5457 | show_remote_protocol_qPart_auxv_packet_cmd (args, from_tty, NULL); |
d471ea57 | 5458 | } |
5a2468f5 | 5459 | |
0f71a2f6 | 5460 | static void |
fba45db2 | 5461 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5462 | { |
d696208f | 5463 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5464 | } |
5465 | ||
dc8acb97 MS |
5466 | /* Saved pointer to previous owner of the new_objfile event. */ |
5467 | static void (*remote_new_objfile_chain) (struct objfile *); | |
5468 | ||
5469 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
5470 | static void | |
5471 | remote_new_objfile (struct objfile *objfile) | |
5472 | { | |
5473 | if (remote_desc != 0) /* Have a remote connection */ | |
5474 | { | |
5475 | remote_check_symbols (objfile); | |
5476 | } | |
5477 | /* Call predecessor on chain, if any. */ | |
5478 | if (remote_new_objfile_chain != 0 && | |
5479 | remote_desc == 0) | |
5480 | remote_new_objfile_chain (objfile); | |
5481 | } | |
5482 | ||
c906108c | 5483 | void |
fba45db2 | 5484 | _initialize_remote (void) |
c906108c | 5485 | { |
5a2468f5 JM |
5486 | static struct cmd_list_element *remote_set_cmdlist; |
5487 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5488 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5489 | |
0f71a2f6 | 5490 | /* architecture specific data */ |
030f20e1 | 5491 | remote_gdbarch_data_handle = gdbarch_data_register_post_init (init_remote_state); |
d01949b6 AC |
5492 | |
5493 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5494 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5495 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5496 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5497 | |
c906108c SS |
5498 | init_remote_ops (); |
5499 | add_target (&remote_ops); | |
5500 | ||
5501 | init_extended_remote_ops (); | |
5502 | add_target (&extended_remote_ops); | |
cce74817 | 5503 | |
43ff13b4 JM |
5504 | init_remote_async_ops (); |
5505 | add_target (&remote_async_ops); | |
5506 | ||
5507 | init_extended_async_remote_ops (); | |
5508 | add_target (&extended_async_remote_ops); | |
5509 | ||
dc8acb97 | 5510 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5511 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5512 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5513 | |
c906108c SS |
5514 | #if 0 |
5515 | init_remote_threadtests (); | |
5516 | #endif | |
5517 | ||
d471ea57 AC |
5518 | /* set/show remote ... */ |
5519 | ||
5a2468f5 JM |
5520 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5521 | Remote protocol specific variables\n\ | |
5522 | Configure various remote-protocol specific variables such as\n\ | |
5523 | the packets being used", | |
cff3e48b | 5524 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5525 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5526 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5527 | Remote protocol specific variables\n\ |
5528 | Configure various remote-protocol specific variables such as\n\ | |
5529 | the packets being used", | |
cff3e48b | 5530 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5531 | 0/*allow-unknown*/, &showlist); |
5532 | ||
c5aa993b | 5533 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5534 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5535 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5536 | &cmdlist); |
5537 | ||
5538 | add_cmd ("packet", class_maintenance, packet_command, | |
5539 | "Send an arbitrary packet to a remote target.\n\ | |
5540 | maintenance packet TEXT\n\ | |
5541 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5542 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5543 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5544 | terminating `#' character and checksum.", | |
5545 | &maintenancelist); | |
5546 | ||
3b64bf98 AC |
5547 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, "\ |
5548 | Set whether to send break if interrupted.", "\ | |
5549 | Show whether to send break if interrupted.", "\ | |
5550 | If set, a break, instead of a cntrl-c, is sent to the remote target.", "\ | |
5551 | Whether to send break if interrupted is %s.", | |
e707bbc2 AC |
5552 | NULL, NULL, |
5553 | &setlist, &showlist); | |
c906108c | 5554 | |
11cf8741 JM |
5555 | /* Install commands for configuring memory read/write packets. */ |
5556 | ||
5557 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5558 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5559 | &setlist); | |
4ad5b0f7 | 5560 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5561 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5562 | &showlist); | |
5563 | add_cmd ("memory-write-packet-size", no_class, | |
5564 | set_memory_write_packet_size, | |
5565 | "Set the maximum number of bytes per memory-write packet.\n" | |
5566 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5567 | "default packet size. The actual limit is further reduced\n" | |
5568 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5569 | "further restriction and ``limit'' to enable that restriction\n", | |
5570 | &remote_set_cmdlist); | |
5571 | add_cmd ("memory-read-packet-size", no_class, | |
5572 | set_memory_read_packet_size, | |
5573 | "Set the maximum number of bytes per memory-read packet.\n" | |
5574 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5575 | "default packet size. The actual limit is further reduced\n" | |
5576 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5577 | "further restriction and ``limit'' to enable that restriction\n", | |
5578 | &remote_set_cmdlist); | |
5579 | add_cmd ("memory-write-packet-size", no_class, | |
5580 | show_memory_write_packet_size, | |
5581 | "Show the maximum number of bytes per memory-write packet.\n", | |
5582 | &remote_show_cmdlist); | |
5583 | add_cmd ("memory-read-packet-size", no_class, | |
5584 | show_memory_read_packet_size, | |
5585 | "Show the maximum number of bytes per memory-read packet.\n", | |
5586 | &remote_show_cmdlist); | |
c906108c | 5587 | |
b3f42336 AC |
5588 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
5589 | &remote_hw_watchpoint_limit, "\ | |
3b64bf98 AC |
5590 | Set the maximum number of target hardware watchpoints.", "\ |
5591 | Show the maximum number of target hardware watchpoints.", "\ | |
501eef12 | 5592 | Specify a negative limit for unlimited.", "\ |
3b64bf98 | 5593 | The maximum number of target hardware watchpoints is %s.", |
b3f42336 AC |
5594 | NULL, NULL, |
5595 | &remote_set_cmdlist, &remote_show_cmdlist); | |
5596 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
5597 | &remote_hw_breakpoint_limit, "\ | |
3b64bf98 AC |
5598 | Set the maximum number of target hardware breakpoints.", "\ |
5599 | Show the maximum number of target hardware breakpoints.", "\ | |
501eef12 | 5600 | Specify a negative limit for unlimited.", "\ |
3b64bf98 | 5601 | The maximum number of target hardware breakpoints is %s.", |
b3f42336 AC |
5602 | NULL, NULL, |
5603 | &remote_set_cmdlist, &remote_show_cmdlist); | |
501eef12 | 5604 | |
cb1a6d5f | 5605 | deprecated_add_show_from_set |
c906108c | 5606 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5607 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5608 | "Set the maximum size of the address (in bits) \ |
5609 | in a memory packet.\n", | |
5610 | &setlist), | |
c5aa993b | 5611 | &showlist); |
c906108c | 5612 | |
96baa820 JM |
5613 | add_packet_config_cmd (&remote_protocol_binary_download, |
5614 | "X", "binary-download", | |
5615 | set_remote_protocol_binary_download_cmd, | |
5616 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5617 | &remote_set_cmdlist, &remote_show_cmdlist, |
5618 | 1); | |
96baa820 JM |
5619 | #if 0 |
5620 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5621 | compatibility. */ | |
cb1a6d5f | 5622 | deprecated_add_show_from_set |
b83266a0 SS |
5623 | (add_set_cmd ("remotebinarydownload", no_class, |
5624 | var_boolean, (char *) &remote_binary_download, | |
5625 | "Set binary downloads.\n", &setlist), | |
5626 | &showlist); | |
96baa820 | 5627 | #endif |
0f71a2f6 | 5628 | |
506fb367 DJ |
5629 | add_packet_config_cmd (&remote_protocol_vcont, |
5630 | "vCont", "verbose-resume", | |
5631 | set_remote_protocol_vcont_packet_cmd, | |
5632 | show_remote_protocol_vcont_packet_cmd, | |
5633 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5634 | 0); | |
5635 | ||
dc8acb97 MS |
5636 | add_packet_config_cmd (&remote_protocol_qSymbol, |
5637 | "qSymbol", "symbol-lookup", | |
5638 | set_remote_protocol_qSymbol_packet_cmd, | |
5639 | show_remote_protocol_qSymbol_packet_cmd, | |
5640 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5641 | 0); | |
5642 | ||
d471ea57 AC |
5643 | add_packet_config_cmd (&remote_protocol_P, |
5644 | "P", "set-register", | |
5a2468f5 JM |
5645 | set_remote_protocol_P_packet_cmd, |
5646 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5647 | &remote_set_cmdlist, &remote_show_cmdlist, |
5648 | 1); | |
5649 | ||
b96ec7ac AC |
5650 | add_packet_config_cmd (&remote_protocol_p, |
5651 | "p", "fetch-register", | |
5652 | set_remote_protocol_p_packet_cmd, | |
5653 | show_remote_protocol_p_packet_cmd, | |
5654 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5655 | 1); | |
5656 | ||
d471ea57 AC |
5657 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], |
5658 | "Z0", "software-breakpoint", | |
5659 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5660 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5661 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5662 | 0); | |
5663 | ||
5664 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5665 | "Z1", "hardware-breakpoint", | |
5666 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5667 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5668 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5669 | 0); | |
5670 | ||
5671 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5672 | "Z2", "write-watchpoint", | |
5673 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5674 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5675 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5676 | 0); | |
5677 | ||
5678 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5679 | "Z3", "read-watchpoint", | |
5680 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5681 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5682 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5683 | 0); | |
5684 | ||
5685 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5686 | "Z4", "access-watchpoint", | |
5687 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5688 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5689 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5690 | 0); | |
5691 | ||
802188a7 RM |
5692 | add_packet_config_cmd (&remote_protocol_qPart_auxv, |
5693 | "qPart_auxv", "read-aux-vector", | |
5694 | set_remote_protocol_qPart_auxv_packet_cmd, | |
5695 | show_remote_protocol_qPart_auxv_packet_cmd, | |
5696 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5697 | 0); | |
5698 | ||
d471ea57 | 5699 | /* Keep the old ``set remote Z-packet ...'' working. */ |
e9e68a56 AC |
5700 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
5701 | &remote_Z_packet_detect, "\ | |
3b64bf98 AC |
5702 | Set use of remote protocol `Z' packets", "\ |
5703 | Show use of remote protocol `Z' packets ", "\ | |
5704 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ | |
5705 | packets.", "\ | |
5706 | Use of remote protocol `Z' packets is %s", | |
e9e68a56 AC |
5707 | set_remote_protocol_Z_packet_cmd, |
5708 | show_remote_protocol_Z_packet_cmd, | |
5709 | &remote_set_cmdlist, &remote_show_cmdlist); | |
449092f6 CV |
5710 | |
5711 | /* Eventually initialize fileio. See fileio.c */ | |
5712 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5713 | } |