Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c AC |
2 | |
3 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, | |
29182b13 DJ |
4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
5 | Free Software Foundation, Inc. | |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c5aa993b | 23 | |
23860348 | 24 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 25 | |
c906108c SS |
26 | #include "defs.h" |
27 | #include "gdb_string.h" | |
28 | #include <ctype.h> | |
29 | #include <fcntl.h> | |
c906108c SS |
30 | #include "inferior.h" |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
60250e8b | 33 | #include "exceptions.h" |
c906108c | 34 | #include "target.h" |
c5aa993b | 35 | /*#include "terminal.h" */ |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "objfiles.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "gdbthread.h" | |
c2c6d25f | 40 | #include "remote.h" |
4e052eda | 41 | #include "regcache.h" |
fd0407d6 | 42 | #include "value.h" |
1ff9c3d6 | 43 | #include "gdb_assert.h" |
c906108c | 44 | |
7a292a7a | 45 | #include <ctype.h> |
9846de1b | 46 | #include <sys/time.h> |
c906108c | 47 | |
43ff13b4 | 48 | #include "event-loop.h" |
c2c6d25f | 49 | #include "event-top.h" |
2acceee2 | 50 | #include "inf-loop.h" |
43ff13b4 | 51 | |
c906108c SS |
52 | #include <signal.h> |
53 | #include "serial.h" | |
54 | ||
6240bebf MS |
55 | #include "gdbcore.h" /* for exec_bfd */ |
56 | ||
449092f6 CV |
57 | #include "remote-fileio.h" |
58 | ||
23860348 | 59 | /* Prototypes for local functions. */ |
6426a772 JM |
60 | static void cleanup_sigint_signal_handler (void *dummy); |
61 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 62 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 63 | |
a14ed312 KB |
64 | static void handle_remote_sigint (int); |
65 | static void handle_remote_sigint_twice (int); | |
66 | static void async_remote_interrupt (gdb_client_data); | |
67 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 68 | |
a14ed312 | 69 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 70 | |
a14ed312 | 71 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 72 | |
a14ed312 KB |
73 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
74 | int len, int should_write, | |
29e57380 | 75 | struct mem_attrib *attrib, |
a14ed312 | 76 | struct target_ops *target); |
c906108c | 77 | |
a14ed312 | 78 | static void remote_prepare_to_store (void); |
c906108c | 79 | |
a14ed312 | 80 | static void remote_fetch_registers (int regno); |
c906108c | 81 | |
39f77062 KB |
82 | static void remote_resume (ptid_t ptid, int step, |
83 | enum target_signal siggnal); | |
84 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 85 | enum target_signal siggnal); |
a14ed312 KB |
86 | static void remote_open (char *name, int from_tty); |
87 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 88 | |
a14ed312 KB |
89 | static void extended_remote_open (char *name, int from_tty); |
90 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 91 | |
92d1e331 DJ |
92 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
93 | int async_p); | |
c906108c | 94 | |
a14ed312 | 95 | static void remote_close (int quitting); |
c906108c | 96 | |
a14ed312 | 97 | static void remote_store_registers (int regno); |
c906108c | 98 | |
a14ed312 KB |
99 | static void remote_mourn (void); |
100 | static void remote_async_mourn (void); | |
c906108c | 101 | |
a14ed312 | 102 | static void extended_remote_restart (void); |
c906108c | 103 | |
a14ed312 | 104 | static void extended_remote_mourn (void); |
c906108c | 105 | |
a14ed312 | 106 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 107 | |
c2d11a7d | 108 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 109 | |
a14ed312 | 110 | static int readchar (int timeout); |
c906108c | 111 | |
39f77062 KB |
112 | static ptid_t remote_wait (ptid_t ptid, |
113 | struct target_waitstatus *status); | |
114 | static ptid_t remote_async_wait (ptid_t ptid, | |
115 | struct target_waitstatus *status); | |
c906108c | 116 | |
a14ed312 KB |
117 | static void remote_kill (void); |
118 | static void remote_async_kill (void); | |
c906108c | 119 | |
a14ed312 | 120 | static int tohex (int nib); |
c906108c | 121 | |
a14ed312 | 122 | static void remote_detach (char *args, int from_tty); |
c906108c | 123 | |
a14ed312 | 124 | static void remote_interrupt (int signo); |
c906108c | 125 | |
a14ed312 | 126 | static void remote_interrupt_twice (int signo); |
7a292a7a | 127 | |
a14ed312 | 128 | static void interrupt_query (void); |
c906108c | 129 | |
a14ed312 | 130 | static void set_thread (int, int); |
c906108c | 131 | |
39f77062 | 132 | static int remote_thread_alive (ptid_t); |
c906108c | 133 | |
a14ed312 | 134 | static void get_offsets (void); |
c906108c | 135 | |
c2d11a7d | 136 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 137 | |
a14ed312 | 138 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 139 | |
a14ed312 | 140 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 141 | |
a14ed312 | 142 | static int hexnumlen (ULONGEST num); |
c906108c | 143 | |
a14ed312 | 144 | static void init_remote_ops (void); |
c906108c | 145 | |
a14ed312 | 146 | static void init_extended_remote_ops (void); |
c906108c | 147 | |
a14ed312 | 148 | static void remote_stop (void); |
c906108c | 149 | |
a14ed312 | 150 | static int ishex (int ch, int *val); |
c906108c | 151 | |
a14ed312 | 152 | static int stubhex (int ch); |
c906108c | 153 | |
a14ed312 | 154 | static int hexnumstr (char *, ULONGEST); |
c906108c | 155 | |
a14ed312 | 156 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 157 | |
a14ed312 | 158 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 159 | |
a14ed312 | 160 | static void print_packet (char *); |
c906108c | 161 | |
a14ed312 | 162 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 163 | |
a14ed312 | 164 | static void compare_sections_command (char *, int); |
c906108c | 165 | |
a14ed312 | 166 | static void packet_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 169 | |
39f77062 | 170 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 171 | |
a14ed312 | 172 | static void remote_find_new_threads (void); |
c906108c | 173 | |
a14ed312 | 174 | static void record_currthread (int currthread); |
c906108c | 175 | |
30559e10 | 176 | static int fromhex (int a); |
c906108c | 177 | |
dc8acb97 | 178 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 179 | |
dc8acb97 | 180 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 181 | |
a14ed312 | 182 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 183 | |
a14ed312 | 184 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 185 | |
5a2468f5 | 186 | struct packet_config; |
5a2468f5 | 187 | |
a14ed312 | 188 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 189 | |
d471ea57 | 190 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 191 | |
a14ed312 | 192 | void _initialize_remote (void); |
c906108c | 193 | |
694f61fb | 194 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
195 | target is open()ed, remote.c should create a per-target description |
196 | of the remote protocol using that target's architecture. | |
ce2826aa | 197 | Unfortunately, the target stack doesn't include local state. For |
d01949b6 AC |
198 | the moment keep the information in the target's architecture |
199 | object. Sigh.. */ | |
200 | ||
ad10f812 AC |
201 | struct packet_reg |
202 | { | |
203 | long offset; /* Offset into G packet. */ | |
204 | long regnum; /* GDB's internal register number. */ | |
205 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 206 | int in_g_packet; /* Always part of G packet. */ |
23860348 MS |
207 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
208 | 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 | |
23860348 | 226 | trailers). */ |
d01949b6 AC |
227 | long actual_register_packet_size; |
228 | ||
229 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 230 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
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 | 266 | |
23860348 | 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 | |
23860348 | 278 | already a full buffer (As of 1999-12-04 that was most stubs. */ |
d01949b6 AC |
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 | 285 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 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 | |
23860348 | 290 | /* This one is filled in when a ``g'' packet is received. */ |
d01949b6 AC |
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 | ||
23860348 | 330 | /* This is non-zero if taregt stopped for a watchpoint. */ |
3c3bea1c GS |
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 | 338 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 339 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
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 | |
23860348 | 350 | this can go away. */ |
6426a772 JM |
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 | |
23860348 | 375 | facilitate backward compatibility. */ |
c906108c SS |
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_*'' | |
23860348 | 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 | |
23860348 | 411 | be lifted or removed. */ |
11cf8741 JM |
412 | #ifndef MAX_REMOTE_PACKET_SIZE |
413 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
414 | #endif | |
23860348 | 415 | /* NOTE: 16 is just chosen at random. */ |
11cf8741 JM |
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); |
23860348 | 430 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
431 | if (config->size > 0 |
432 | && what_they_get > config->size) | |
433 | what_they_get = config->size; | |
23860348 | 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 | |
23860348 | 447 | something really big then do a sanity check. */ |
11cf8741 JM |
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) | |
8a3fe4f8 | 455 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
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) | |
8a3fe4f8 | 467 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
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 | |
23860348 | 472 | large. */ |
11cf8741 | 473 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 474 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
475 | #endif |
476 | } | |
23860348 | 477 | /* Extra checks? */ |
11cf8741 JM |
478 | if (fixed_p && !config->fixed_p) |
479 | { | |
e2e0b3e5 AC |
480 | if (! query (_("The target may not be able to correctly handle a %s\n" |
481 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 482 | config->name, size)) |
8a3fe4f8 | 483 | error (_("Packet size not changed.")); |
11cf8741 | 484 | } |
23860348 | 485 | /* Update the config. */ |
11cf8741 JM |
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 | { | |
a3f17187 | 493 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 494 | if (config->fixed_p) |
a3f17187 | 495 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
496 | get_memory_packet_size (config)); |
497 | else | |
a3f17187 | 498 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
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 | |
23860348 | 549 | increased beyond (rs->remote_packet_size). */ |
d01949b6 AC |
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 | |
23860348 | 558 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
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 | 575 | /* Analyze a packet's return value and update the packet config |
23860348 | 576 | accordingly. */ |
d471ea57 AC |
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: |
a3f17187 | 621 | printf_filtered (_("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n"), |
5a2468f5 JM |
622 | config->name, config->title, support); |
623 | break; | |
7f19b9a2 AC |
624 | case AUTO_BOOLEAN_TRUE: |
625 | case AUTO_BOOLEAN_FALSE: | |
a3f17187 | 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 | 636 | cmd_sfunc_ftype *set_func, |
08546159 | 637 | show_value_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, | |
7915a72c | 663 | "", NULL /* FIXME: i18n: Print message is? */, |
e9e68a56 AC |
664 | set_func, show_func, |
665 | set_remote_list, show_remote_list); | |
23860348 | 666 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
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 | 683 | /* The stub recognized the packet request. Check that the |
23860348 | 684 | operation succeeded. */ |
d471ea57 AC |
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 | 695 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 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') | |
23860348 | 702 | /* "OK" - definitly OK. */ |
d471ea57 AC |
703 | return PACKET_OK; |
704 | if (buf[0] == 'E' | |
705 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
706 | && buf[3] == '\0') | |
23860348 | 707 | /* "Enn" - definitly an error. */ |
d471ea57 | 708 | return PACKET_ERROR; |
23860348 | 709 | /* The packet may or may not be OK. Just assume it is. */ |
d471ea57 AC |
710 | return PACKET_OK; |
711 | } | |
712 | else | |
713 | { | |
23860348 | 714 | /* The stub does not support the packet. */ |
d471ea57 AC |
715 | switch (config->support) |
716 | { | |
717 | case PACKET_ENABLE: | |
7f19b9a2 | 718 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 719 | /* If the stub previously indicated that the packet was |
23860348 | 720 | supported then there is a protocol error.. */ |
8a3fe4f8 | 721 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
722 | config->name, config->title); |
723 | else | |
23860348 | 724 | /* The user set it wrong. */ |
8a3fe4f8 | 725 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
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 | ||
23860348 | 742 | /* Should we try the 'vCont' (descriptive resume) request? */ |
506fb367 DJ |
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 | |
08546159 AC |
753 | show_remote_protocol_vcont_packet_cmd (struct ui_file *file, int from_tty, |
754 | struct cmd_list_element *c, | |
755 | const char *value) | |
506fb367 | 756 | { |
08546159 | 757 | deprecated_show_value_hack (file, from_tty, c, value); |
506fb367 DJ |
758 | show_packet_config_cmd (&remote_protocol_vcont); |
759 | } | |
760 | ||
23860348 | 761 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
dc8acb97 MS |
762 | static struct packet_config remote_protocol_qSymbol; |
763 | ||
764 | static void | |
765 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
766 | struct cmd_list_element *c) | |
767 | { | |
768 | update_packet_config (&remote_protocol_qSymbol); | |
769 | } | |
770 | ||
771 | static void | |
08546159 AC |
772 | show_remote_protocol_qSymbol_packet_cmd (struct ui_file *file, int from_tty, |
773 | struct cmd_list_element *c, | |
774 | const char *value) | |
dc8acb97 | 775 | { |
08546159 | 776 | deprecated_show_value_hack (file, from_tty, c, value); |
dc8acb97 MS |
777 | show_packet_config_cmd (&remote_protocol_qSymbol); |
778 | } | |
779 | ||
5a2468f5 JM |
780 | /* Should we try the 'P' (set register) request? */ |
781 | ||
782 | static struct packet_config remote_protocol_P; | |
783 | ||
784 | static void | |
fba45db2 KB |
785 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
786 | struct cmd_list_element *c) | |
5a2468f5 | 787 | { |
d471ea57 | 788 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
789 | } |
790 | ||
791 | static void | |
08546159 AC |
792 | show_remote_protocol_P_packet_cmd (struct ui_file *file, int from_tty, |
793 | struct cmd_list_element *c, | |
794 | const char *value) | |
5a2468f5 | 795 | { |
08546159 | 796 | deprecated_show_value_hack (file, from_tty, c, value); |
5a2468f5 JM |
797 | show_packet_config_cmd (&remote_protocol_P); |
798 | } | |
799 | ||
d471ea57 AC |
800 | /* Should we try one of the 'Z' requests? */ |
801 | ||
802 | enum Z_packet_type | |
803 | { | |
804 | Z_PACKET_SOFTWARE_BP, | |
805 | Z_PACKET_HARDWARE_BP, | |
806 | Z_PACKET_WRITE_WP, | |
807 | Z_PACKET_READ_WP, | |
808 | Z_PACKET_ACCESS_WP, | |
809 | NR_Z_PACKET_TYPES | |
810 | }; | |
96baa820 | 811 | |
d471ea57 AC |
812 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
813 | ||
814 | /* FIXME: Instead of having all these boiler plate functions, the | |
23860348 | 815 | command callback should include a context argument. */ |
d471ea57 AC |
816 | |
817 | static void | |
818 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
819 | struct cmd_list_element *c) | |
820 | { | |
821 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
822 | } | |
823 | ||
824 | static void | |
08546159 AC |
825 | show_remote_protocol_Z_software_bp_packet_cmd (struct ui_file *file, int from_tty, |
826 | struct cmd_list_element *c, | |
827 | const char *value) | |
d471ea57 | 828 | { |
08546159 | 829 | deprecated_show_value_hack (file, from_tty, c, value); |
d471ea57 AC |
830 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); |
831 | } | |
832 | ||
833 | static void | |
834 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
835 | struct cmd_list_element *c) | |
836 | { | |
837 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
838 | } | |
839 | ||
840 | static void | |
08546159 AC |
841 | show_remote_protocol_Z_hardware_bp_packet_cmd (struct ui_file *file, int from_tty, |
842 | struct cmd_list_element *c, | |
843 | const char *value) | |
d471ea57 | 844 | { |
08546159 | 845 | deprecated_show_value_hack (file, from_tty, c, value); |
d471ea57 AC |
846 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); |
847 | } | |
848 | ||
849 | static void | |
850 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
851 | struct cmd_list_element *c) | |
852 | { | |
853 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
854 | } | |
855 | ||
856 | static void | |
08546159 AC |
857 | show_remote_protocol_Z_write_wp_packet_cmd (struct ui_file *file, int from_tty, |
858 | struct cmd_list_element *c, | |
859 | const char *value) | |
d471ea57 | 860 | { |
08546159 | 861 | deprecated_show_value_hack (file, from_tty, c, value); |
d471ea57 AC |
862 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); |
863 | } | |
864 | ||
865 | static void | |
866 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
867 | struct cmd_list_element *c) | |
868 | { | |
869 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
870 | } | |
871 | ||
872 | static void | |
08546159 AC |
873 | show_remote_protocol_Z_read_wp_packet_cmd (struct ui_file *file, int from_tty, |
874 | struct cmd_list_element *c, | |
875 | const char *value) | |
d471ea57 | 876 | { |
08546159 | 877 | deprecated_show_value_hack (file, from_tty, c, value); |
d471ea57 AC |
878 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); |
879 | } | |
880 | ||
881 | static void | |
882 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
883 | struct cmd_list_element *c) | |
884 | { | |
885 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
886 | } | |
887 | ||
888 | static void | |
08546159 AC |
889 | show_remote_protocol_Z_access_wp_packet_cmd (struct ui_file *file, int from_tty, |
890 | struct cmd_list_element *c, | |
891 | const char *value) | |
d471ea57 | 892 | { |
08546159 | 893 | deprecated_show_value_hack (file, from_tty, c, value); |
d471ea57 AC |
894 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); |
895 | } | |
896 | ||
897 | /* For compatibility with older distributions. Provide a ``set remote | |
23860348 | 898 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 899 | |
7f19b9a2 | 900 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
901 | |
902 | static void | |
fba45db2 KB |
903 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
904 | struct cmd_list_element *c) | |
96baa820 | 905 | { |
d471ea57 AC |
906 | int i; |
907 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
908 | { | |
909 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
910 | update_packet_config (&remote_protocol_Z[i]); | |
911 | } | |
96baa820 JM |
912 | } |
913 | ||
914 | static void | |
08546159 AC |
915 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
916 | struct cmd_list_element *c, | |
917 | const char *value) | |
96baa820 | 918 | { |
d471ea57 AC |
919 | int i; |
920 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
921 | { | |
922 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
923 | } | |
96baa820 JM |
924 | } |
925 | ||
926 | /* Should we try the 'X' (remote binary download) packet? | |
927 | ||
928 | This variable (available to the user via "set remote X-packet") | |
929 | dictates whether downloads are sent in binary (via the 'X' packet). | |
930 | We assume that the stub can, and attempt to do it. This will be | |
931 | cleared if the stub does not understand it. This switch is still | |
932 | needed, though in cases when the packet is supported in the stub, | |
933 | but the connection does not allow it (i.e., 7-bit serial connection | |
23860348 | 934 | only). */ |
96baa820 JM |
935 | |
936 | static struct packet_config remote_protocol_binary_download; | |
937 | ||
9d1f7ab2 MS |
938 | /* Should we try the 'ThreadInfo' query packet? |
939 | ||
940 | This variable (NOT available to the user: auto-detect only!) | |
941 | determines whether GDB will use the new, simpler "ThreadInfo" | |
942 | query or the older, more complex syntax for thread queries. | |
802188a7 | 943 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
944 | and set to false when the target fails to recognize it). */ |
945 | ||
946 | static int use_threadinfo_query; | |
947 | static int use_threadextra_query; | |
948 | ||
96baa820 JM |
949 | static void |
950 | set_remote_protocol_binary_download_cmd (char *args, | |
951 | int from_tty, | |
952 | struct cmd_list_element *c) | |
953 | { | |
d471ea57 | 954 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
955 | } |
956 | ||
957 | static void | |
08546159 AC |
958 | show_remote_protocol_binary_download_cmd (struct ui_file *file, int from_tty, |
959 | struct cmd_list_element *c, | |
960 | const char *value) | |
96baa820 | 961 | { |
08546159 | 962 | deprecated_show_value_hack (file, from_tty, c, value); |
96baa820 JM |
963 | show_packet_config_cmd (&remote_protocol_binary_download); |
964 | } | |
965 | ||
23860348 | 966 | /* Should we try the 'qPart:auxv' (target auxiliary vector read) request? */ |
802188a7 RM |
967 | static struct packet_config remote_protocol_qPart_auxv; |
968 | ||
969 | static void | |
970 | set_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
971 | struct cmd_list_element *c) | |
972 | { | |
973 | update_packet_config (&remote_protocol_qPart_auxv); | |
974 | } | |
975 | ||
976 | static void | |
08546159 AC |
977 | show_remote_protocol_qPart_auxv_packet_cmd (struct ui_file *file, int from_tty, |
978 | struct cmd_list_element *c, | |
979 | const char *value) | |
802188a7 | 980 | { |
08546159 | 981 | deprecated_show_value_hack (file, from_tty, c, value); |
802188a7 RM |
982 | show_packet_config_cmd (&remote_protocol_qPart_auxv); |
983 | } | |
984 | ||
b96ec7ac AC |
985 | static struct packet_config remote_protocol_p; |
986 | ||
987 | static void | |
988 | set_remote_protocol_p_packet_cmd (char *args, int from_tty, | |
989 | struct cmd_list_element *c) | |
990 | { | |
991 | update_packet_config (&remote_protocol_p); | |
992 | } | |
993 | ||
994 | static void | |
08546159 AC |
995 | show_remote_protocol_p_packet_cmd (struct ui_file *file, int from_tty, |
996 | struct cmd_list_element *c, | |
997 | const char *value) | |
b96ec7ac | 998 | { |
08546159 | 999 | deprecated_show_value_hack (file, from_tty, c, value); |
b96ec7ac AC |
1000 | show_packet_config_cmd (&remote_protocol_p); |
1001 | } | |
1002 | ||
1003 | ||
c906108c | 1004 | |
23860348 | 1005 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
1006 | static void *sigint_remote_twice_token; |
1007 | static void *sigint_remote_token; | |
43ff13b4 | 1008 | |
c906108c SS |
1009 | /* These are pointers to hook functions that may be set in order to |
1010 | modify resume/wait behavior for a particular architecture. */ | |
1011 | ||
9a4105ab AC |
1012 | void (*deprecated_target_resume_hook) (void); |
1013 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
1014 | \f |
1015 | ||
c5aa993b | 1016 | |
c906108c SS |
1017 | /* These are the threads which we last sent to the remote system. |
1018 | -1 for all or -2 for not sent yet. */ | |
1019 | static int general_thread; | |
cce74817 | 1020 | static int continue_thread; |
c906108c SS |
1021 | |
1022 | /* Call this function as a result of | |
1023 | 1) A halt indication (T packet) containing a thread id | |
1024 | 2) A direct query of currthread | |
1025 | 3) Successful execution of set thread | |
1026 | */ | |
1027 | ||
1028 | static void | |
fba45db2 | 1029 | record_currthread (int currthread) |
c906108c | 1030 | { |
c906108c | 1031 | general_thread = currthread; |
cce74817 | 1032 | |
c906108c SS |
1033 | /* If this is a new thread, add it to GDB's thread list. |
1034 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1035 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1036 | { |
39f77062 | 1037 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1038 | ui_out_text (uiout, "[New "); |
39f77062 | 1039 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1040 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1041 | } |
c906108c SS |
1042 | } |
1043 | ||
1044 | #define MAGIC_NULL_PID 42000 | |
1045 | ||
1046 | static void | |
fba45db2 | 1047 | set_thread (int th, int gen) |
c906108c | 1048 | { |
d01949b6 AC |
1049 | struct remote_state *rs = get_remote_state (); |
1050 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1051 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1052 | |
1053 | if (state == th) | |
1054 | return; | |
1055 | ||
1056 | buf[0] = 'H'; | |
1057 | buf[1] = gen ? 'g' : 'c'; | |
1058 | if (th == MAGIC_NULL_PID) | |
1059 | { | |
1060 | buf[2] = '0'; | |
1061 | buf[3] = '\0'; | |
1062 | } | |
1063 | else if (th < 0) | |
1064 | sprintf (&buf[2], "-%x", -th); | |
1065 | else | |
1066 | sprintf (&buf[2], "%x", th); | |
1067 | putpkt (buf); | |
d01949b6 | 1068 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1069 | if (gen) |
c5aa993b | 1070 | general_thread = th; |
c906108c | 1071 | else |
cce74817 | 1072 | continue_thread = th; |
c906108c SS |
1073 | } |
1074 | \f | |
1075 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1076 | ||
1077 | static int | |
39f77062 | 1078 | remote_thread_alive (ptid_t ptid) |
c906108c | 1079 | { |
39f77062 | 1080 | int tid = PIDGET (ptid); |
cce74817 | 1081 | char buf[16]; |
c906108c | 1082 | |
cce74817 JM |
1083 | if (tid < 0) |
1084 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1085 | else |
cce74817 | 1086 | sprintf (buf, "T%08x", tid); |
c906108c | 1087 | putpkt (buf); |
c2d11a7d | 1088 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1089 | return (buf[0] == 'O' && buf[1] == 'K'); |
1090 | } | |
1091 | ||
1092 | /* About these extended threadlist and threadinfo packets. They are | |
1093 | variable length packets but, the fields within them are often fixed | |
1094 | length. They are redundent enough to send over UDP as is the | |
1095 | remote protocol in general. There is a matching unit test module | |
1096 | in libstub. */ | |
1097 | ||
cce74817 JM |
1098 | #define OPAQUETHREADBYTES 8 |
1099 | ||
1100 | /* a 64 bit opaque identifier */ | |
1101 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1102 | ||
23860348 MS |
1103 | /* WARNING: This threadref data structure comes from the remote O.S., |
1104 | libstub protocol encoding, and remote.c. it is not particularly | |
1105 | changable. */ | |
cce74817 JM |
1106 | |
1107 | /* Right now, the internal structure is int. We want it to be bigger. | |
1108 | Plan to fix this. | |
c5aa993b | 1109 | */ |
cce74817 | 1110 | |
23860348 | 1111 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1112 | |
9d1f7ab2 | 1113 | /* gdb_ext_thread_info is an internal GDB data structure which is |
23860348 | 1114 | equivalint to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1115 | |
1116 | struct gdb_ext_thread_info | |
c5aa993b | 1117 | { |
23860348 MS |
1118 | threadref threadid; /* External form of thread reference. */ |
1119 | int active; /* Has state interesting to GDB? | |
1120 | regs, stack. */ | |
1121 | char display[256]; /* Brief state display, name, | |
1122 | blocked/syspended. */ | |
1123 | char shortname[32]; /* To be used to name threads. */ | |
1124 | char more_display[256]; /* Long info, statistics, queue depth, | |
1125 | whatever. */ | |
c5aa993b | 1126 | }; |
cce74817 JM |
1127 | |
1128 | /* The volume of remote transfers can be limited by submitting | |
1129 | a mask containing bits specifying the desired information. | |
1130 | Use a union of these values as the 'selection' parameter to | |
1131 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1132 | */ |
cce74817 JM |
1133 | |
1134 | #define TAG_THREADID 1 | |
1135 | #define TAG_EXISTS 2 | |
1136 | #define TAG_DISPLAY 4 | |
1137 | #define TAG_THREADNAME 8 | |
c5aa993b | 1138 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1139 | |
23860348 | 1140 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1141 | |
b2dd6311 | 1142 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1143 | |
a14ed312 | 1144 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1145 | |
a14ed312 | 1146 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1147 | |
23860348 | 1148 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1149 | |
a14ed312 | 1150 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1151 | |
a14ed312 | 1152 | static char *pack_int (char *buf, int value); |
cce74817 | 1153 | |
a14ed312 | 1154 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1155 | |
a14ed312 | 1156 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1157 | |
23860348 | 1158 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1159 | |
23860348 | 1160 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1161 | |
23860348 | 1162 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1163 | |
23860348 | 1164 | static int threadref_to_int (threadref *ref); |
cce74817 | 1165 | |
23860348 | 1166 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1167 | |
23860348 | 1168 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1169 | |
23860348 MS |
1170 | static char *pack_threadinfo_request (char *pkt, int mode, |
1171 | threadref *id); | |
cce74817 | 1172 | |
a14ed312 | 1173 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1174 | threadref *expectedref, |
a14ed312 KB |
1175 | struct gdb_ext_thread_info |
1176 | *info); | |
cce74817 JM |
1177 | |
1178 | ||
23860348 MS |
1179 | static int remote_get_threadinfo (threadref *threadid, |
1180 | int fieldset, /*TAG mask */ | |
a14ed312 | 1181 | struct gdb_ext_thread_info *info); |
cce74817 | 1182 | |
a14ed312 KB |
1183 | static char *pack_threadlist_request (char *pkt, int startflag, |
1184 | int threadcount, | |
23860348 | 1185 | threadref *nextthread); |
cce74817 | 1186 | |
a14ed312 KB |
1187 | static int parse_threadlist_response (char *pkt, |
1188 | int result_limit, | |
23860348 MS |
1189 | threadref *original_echo, |
1190 | threadref *resultlist, | |
1191 | int *doneflag); | |
cce74817 | 1192 | |
a14ed312 | 1193 | static int remote_get_threadlist (int startflag, |
23860348 | 1194 | threadref *nextthread, |
a14ed312 KB |
1195 | int result_limit, |
1196 | int *done, | |
23860348 MS |
1197 | int *result_count, |
1198 | threadref *threadlist); | |
cce74817 | 1199 | |
23860348 | 1200 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1201 | |
a14ed312 KB |
1202 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1203 | void *context, int looplimit); | |
cce74817 | 1204 | |
23860348 | 1205 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1206 | |
23860348 | 1207 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1208 | |
1209 | static const char hexchars[] = "0123456789abcdef"; | |
1210 | ||
1211 | static int | |
fba45db2 | 1212 | ishex (int ch, int *val) |
c906108c SS |
1213 | { |
1214 | if ((ch >= 'a') && (ch <= 'f')) | |
1215 | { | |
1216 | *val = ch - 'a' + 10; | |
1217 | return 1; | |
1218 | } | |
1219 | if ((ch >= 'A') && (ch <= 'F')) | |
1220 | { | |
1221 | *val = ch - 'A' + 10; | |
1222 | return 1; | |
1223 | } | |
1224 | if ((ch >= '0') && (ch <= '9')) | |
1225 | { | |
1226 | *val = ch - '0'; | |
1227 | return 1; | |
1228 | } | |
1229 | return 0; | |
1230 | } | |
1231 | ||
1232 | static int | |
fba45db2 | 1233 | stubhex (int ch) |
c906108c SS |
1234 | { |
1235 | if (ch >= 'a' && ch <= 'f') | |
1236 | return ch - 'a' + 10; | |
1237 | if (ch >= '0' && ch <= '9') | |
1238 | return ch - '0'; | |
1239 | if (ch >= 'A' && ch <= 'F') | |
1240 | return ch - 'A' + 10; | |
1241 | return -1; | |
1242 | } | |
1243 | ||
1244 | static int | |
fba45db2 | 1245 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1246 | { |
1247 | int nibble; | |
1248 | int retval = 0; | |
1249 | ||
1250 | while (fieldlength) | |
1251 | { | |
1252 | nibble = stubhex (*buff++); | |
1253 | retval |= nibble; | |
1254 | fieldlength--; | |
1255 | if (fieldlength) | |
1256 | retval = retval << 4; | |
1257 | } | |
1258 | return retval; | |
1259 | } | |
1260 | ||
1261 | char * | |
fba45db2 | 1262 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1263 | ULONGEST *result) |
c906108c SS |
1264 | { |
1265 | int nibble; | |
1266 | int retval = 0; | |
1267 | ||
1268 | while (ishex (*buff, &nibble)) | |
1269 | { | |
1270 | buff++; | |
1271 | retval = retval << 4; | |
1272 | retval |= nibble & 0x0f; | |
1273 | } | |
1274 | *result = retval; | |
1275 | return buff; | |
1276 | } | |
1277 | ||
1278 | static char * | |
fba45db2 | 1279 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1280 | { |
1281 | ishex (*buf++, val); | |
1282 | return buf; | |
1283 | } | |
1284 | ||
1285 | static char * | |
fba45db2 | 1286 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1287 | { |
1288 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1289 | return buf; | |
1290 | } | |
1291 | ||
1292 | static char * | |
fba45db2 | 1293 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1294 | { |
1295 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1296 | *pkt++ = hexchars[(byte & 0xf)]; | |
1297 | return pkt; | |
1298 | } | |
1299 | ||
1300 | static char * | |
fba45db2 | 1301 | unpack_byte (char *buf, int *value) |
c906108c SS |
1302 | { |
1303 | *value = stub_unpack_int (buf, 2); | |
1304 | return buf + 2; | |
1305 | } | |
1306 | ||
1307 | static char * | |
fba45db2 | 1308 | pack_int (char *buf, int value) |
c906108c SS |
1309 | { |
1310 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1311 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1312 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1313 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1314 | return buf; | |
1315 | } | |
1316 | ||
1317 | static char * | |
fba45db2 | 1318 | unpack_int (char *buf, int *value) |
c906108c SS |
1319 | { |
1320 | *value = stub_unpack_int (buf, 8); | |
1321 | return buf + 8; | |
1322 | } | |
1323 | ||
23860348 | 1324 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1325 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1326 | |
1327 | static char * | |
fba45db2 | 1328 | pack_string (char *pkt, char *string) |
c906108c SS |
1329 | { |
1330 | char ch; | |
1331 | int len; | |
1332 | ||
1333 | len = strlen (string); | |
1334 | if (len > 200) | |
23860348 | 1335 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1336 | pkt = pack_hex_byte (pkt, len); |
1337 | while (len-- > 0) | |
1338 | { | |
1339 | ch = *string++; | |
1340 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1341 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1342 | *pkt++ = ch; |
1343 | } | |
1344 | return pkt; | |
1345 | } | |
1346 | #endif /* 0 (unused) */ | |
1347 | ||
1348 | static char * | |
fba45db2 | 1349 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1350 | { |
1351 | while (length--) | |
1352 | *dest++ = *src++; | |
1353 | *dest = '\0'; | |
1354 | return src; | |
1355 | } | |
1356 | ||
1357 | static char * | |
fba45db2 | 1358 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1359 | { |
1360 | char *limit; | |
1361 | unsigned char *altid; | |
1362 | ||
1363 | altid = (unsigned char *) id; | |
1364 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1365 | while (pkt < limit) | |
1366 | pkt = pack_hex_byte (pkt, *altid++); | |
1367 | return pkt; | |
1368 | } | |
1369 | ||
1370 | ||
1371 | static char * | |
fba45db2 | 1372 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1373 | { |
1374 | char *altref; | |
1375 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1376 | int x, y; | |
1377 | ||
1378 | altref = (char *) id; | |
1379 | ||
1380 | while (inbuf < limit) | |
1381 | { | |
1382 | x = stubhex (*inbuf++); | |
1383 | y = stubhex (*inbuf++); | |
1384 | *altref++ = (x << 4) | y; | |
1385 | } | |
1386 | return inbuf; | |
1387 | } | |
1388 | ||
1389 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1390 | ints. This is due to a mismatch of specifications. We would like | |
1391 | to use 64bit thread references internally. This is an adapter | |
1392 | function. */ | |
1393 | ||
1394 | void | |
fba45db2 | 1395 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1396 | { |
1397 | unsigned char *scan; | |
1398 | ||
1399 | scan = (unsigned char *) id; | |
1400 | { | |
1401 | int i = 4; | |
1402 | while (i--) | |
1403 | *scan++ = 0; | |
1404 | } | |
1405 | *scan++ = (value >> 24) & 0xff; | |
1406 | *scan++ = (value >> 16) & 0xff; | |
1407 | *scan++ = (value >> 8) & 0xff; | |
1408 | *scan++ = (value & 0xff); | |
1409 | } | |
1410 | ||
1411 | static int | |
fba45db2 | 1412 | threadref_to_int (threadref *ref) |
c906108c SS |
1413 | { |
1414 | int i, value = 0; | |
1415 | unsigned char *scan; | |
1416 | ||
1417 | scan = (char *) ref; | |
1418 | scan += 4; | |
1419 | i = 4; | |
1420 | while (i-- > 0) | |
1421 | value = (value << 8) | ((*scan++) & 0xff); | |
1422 | return value; | |
1423 | } | |
1424 | ||
1425 | static void | |
fba45db2 | 1426 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1427 | { |
1428 | int i; | |
1429 | unsigned char *csrc, *cdest; | |
1430 | ||
1431 | csrc = (unsigned char *) src; | |
1432 | cdest = (unsigned char *) dest; | |
1433 | i = 8; | |
1434 | while (i--) | |
1435 | *cdest++ = *csrc++; | |
1436 | } | |
1437 | ||
1438 | static int | |
fba45db2 | 1439 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1440 | { |
23860348 | 1441 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1442 | #if 0 |
1443 | unsigned char *srcp, *destp; | |
1444 | int i, result; | |
1445 | srcp = (char *) src; | |
1446 | destp = (char *) dest; | |
1447 | ||
1448 | result = 1; | |
1449 | while (i-- > 0) | |
1450 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1451 | return result; | |
1452 | #endif | |
1453 | return 1; | |
1454 | } | |
1455 | ||
1456 | /* | |
c5aa993b JM |
1457 | threadid:1, # always request threadid |
1458 | context_exists:2, | |
1459 | display:4, | |
1460 | unique_name:8, | |
1461 | more_display:16 | |
1462 | */ | |
c906108c SS |
1463 | |
1464 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1465 | ||
1466 | static char * | |
fba45db2 | 1467 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1468 | { |
23860348 MS |
1469 | *pkt++ = 'q'; /* Info Query */ |
1470 | *pkt++ = 'P'; /* process or thread info */ | |
1471 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1472 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1473 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1474 | return pkt; |
1475 | } | |
1476 | ||
23860348 | 1477 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1478 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1479 | add more fields as time goes by. */ |
c906108c | 1480 | |
23860348 | 1481 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1482 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1483 | fetch registers and its stack? */ |
c5aa993b | 1484 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1485 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1486 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1487 | the process. */ |
c906108c SS |
1488 | |
1489 | static int | |
fba45db2 KB |
1490 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1491 | struct gdb_ext_thread_info *info) | |
c906108c | 1492 | { |
d01949b6 | 1493 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1494 | int mask, length; |
1495 | unsigned int tag; | |
1496 | threadref ref; | |
d01949b6 | 1497 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1498 | int retval = 1; |
1499 | ||
23860348 | 1500 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1501 | info->active = 0; |
1502 | info->display[0] = '\0'; | |
1503 | info->shortname[0] = '\0'; | |
1504 | info->more_display[0] = '\0'; | |
1505 | ||
23860348 MS |
1506 | /* Assume the characters indicating the packet type have been |
1507 | stripped. */ | |
c906108c SS |
1508 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1509 | pkt = unpack_threadid (pkt, &ref); | |
1510 | ||
1511 | if (mask == 0) | |
8a3fe4f8 | 1512 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1513 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1514 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1515 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1516 | return 0; |
1517 | } | |
1518 | copy_threadref (&info->threadid, &ref); | |
1519 | ||
23860348 | 1520 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1521 | |
23860348 MS |
1522 | /* Packets are terminated with nulls. */ |
1523 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1524 | { |
1525 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1526 | pkt = unpack_byte (pkt, &length); /* length */ |
1527 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1528 | { |
8a3fe4f8 | 1529 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1530 | retval = 0; |
1531 | break; | |
1532 | } | |
1533 | if (tag == TAG_THREADID) | |
1534 | { | |
1535 | if (length != 16) | |
1536 | { | |
8a3fe4f8 | 1537 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1538 | retval = 0; |
1539 | break; | |
1540 | } | |
1541 | pkt = unpack_threadid (pkt, &ref); | |
1542 | mask = mask & ~TAG_THREADID; | |
1543 | continue; | |
1544 | } | |
1545 | if (tag == TAG_EXISTS) | |
1546 | { | |
1547 | info->active = stub_unpack_int (pkt, length); | |
1548 | pkt += length; | |
1549 | mask = mask & ~(TAG_EXISTS); | |
1550 | if (length > 8) | |
1551 | { | |
8a3fe4f8 | 1552 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1553 | retval = 0; |
1554 | break; | |
1555 | } | |
1556 | continue; | |
1557 | } | |
1558 | if (tag == TAG_THREADNAME) | |
1559 | { | |
1560 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1561 | mask = mask & ~TAG_THREADNAME; | |
1562 | continue; | |
1563 | } | |
1564 | if (tag == TAG_DISPLAY) | |
1565 | { | |
1566 | pkt = unpack_string (pkt, &info->display[0], length); | |
1567 | mask = mask & ~TAG_DISPLAY; | |
1568 | continue; | |
1569 | } | |
1570 | if (tag == TAG_MOREDISPLAY) | |
1571 | { | |
1572 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1573 | mask = mask & ~TAG_MOREDISPLAY; | |
1574 | continue; | |
1575 | } | |
8a3fe4f8 | 1576 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1577 | break; /* Not a tag we know about. */ |
c906108c SS |
1578 | } |
1579 | return retval; | |
1580 | } | |
1581 | ||
1582 | static int | |
fba45db2 KB |
1583 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1584 | struct gdb_ext_thread_info *info) | |
c906108c | 1585 | { |
d01949b6 | 1586 | struct remote_state *rs = get_remote_state (); |
c906108c | 1587 | int result; |
d01949b6 | 1588 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1589 | |
1590 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1591 | putpkt (threadinfo_pkt); | |
d01949b6 | 1592 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
23860348 MS |
1593 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, |
1594 | threadid, info); | |
c906108c SS |
1595 | return result; |
1596 | } | |
1597 | ||
c906108c SS |
1598 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1599 | ||
1600 | static char * | |
fba45db2 KB |
1601 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1602 | threadref *nextthread) | |
c906108c SS |
1603 | { |
1604 | *pkt++ = 'q'; /* info query packet */ | |
1605 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1606 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1607 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1608 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1609 | *pkt = '\0'; | |
1610 | return pkt; | |
1611 | } | |
1612 | ||
1613 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1614 | ||
1615 | static int | |
fba45db2 KB |
1616 | parse_threadlist_response (char *pkt, int result_limit, |
1617 | threadref *original_echo, threadref *resultlist, | |
1618 | int *doneflag) | |
c906108c | 1619 | { |
d01949b6 | 1620 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1621 | char *limit; |
1622 | int count, resultcount, done; | |
1623 | ||
1624 | resultcount = 0; | |
1625 | /* Assume the 'q' and 'M chars have been stripped. */ | |
23860348 MS |
1626 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); |
1627 | /* done parse past here */ | |
c906108c SS |
1628 | pkt = unpack_byte (pkt, &count); /* count field */ |
1629 | pkt = unpack_nibble (pkt, &done); | |
1630 | /* The first threadid is the argument threadid. */ | |
1631 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1632 | while ((count-- > 0) && (pkt < limit)) | |
1633 | { | |
1634 | pkt = unpack_threadid (pkt, resultlist++); | |
1635 | if (resultcount++ >= result_limit) | |
1636 | break; | |
1637 | } | |
1638 | if (doneflag) | |
1639 | *doneflag = done; | |
1640 | return resultcount; | |
1641 | } | |
1642 | ||
1643 | static int | |
fba45db2 KB |
1644 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1645 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1646 | { |
d01949b6 | 1647 | struct remote_state *rs = get_remote_state (); |
c906108c | 1648 | static threadref echo_nextthread; |
d01949b6 AC |
1649 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1650 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1651 | int result = 1; |
1652 | ||
23860348 | 1653 | /* Trancate result limit to be smaller than the packet size. */ |
d01949b6 AC |
1654 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1655 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1656 | |
1657 | pack_threadlist_request (threadlist_packet, | |
1658 | startflag, result_limit, nextthread); | |
1659 | putpkt (threadlist_packet); | |
d01949b6 | 1660 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1661 | |
1662 | *result_count = | |
1663 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1664 | threadlist, done); | |
1665 | ||
1666 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1667 | { | |
23860348 MS |
1668 | /* FIXME: This is a good reason to drop the packet. */ |
1669 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1670 | /* Possabilities : |
1671 | retransmit immediatly - race conditions | |
1672 | retransmit after timeout - yes | |
1673 | exit | |
1674 | wait for packet, then exit | |
1675 | */ | |
8a3fe4f8 | 1676 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1677 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1678 | } |
1679 | if (*result_count <= 0) | |
1680 | { | |
1681 | if (*done != 1) | |
1682 | { | |
8a3fe4f8 | 1683 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1684 | result = 0; |
1685 | } | |
1686 | return result; /* break; */ | |
1687 | } | |
1688 | if (*result_count > result_limit) | |
1689 | { | |
1690 | *result_count = 0; | |
8a3fe4f8 | 1691 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1692 | return 0; |
1693 | } | |
1694 | return result; | |
1695 | } | |
1696 | ||
23860348 MS |
1697 | /* This is the interface between remote and threads, remotes upper |
1698 | interface. */ | |
c906108c SS |
1699 | |
1700 | /* remote_find_new_threads retrieves the thread list and for each | |
1701 | thread in the list, looks up the thread in GDB's internal list, | |
1702 | ading the thread if it does not already exist. This involves | |
1703 | getting partial thread lists from the remote target so, polling the | |
1704 | quit_flag is required. */ | |
1705 | ||
1706 | ||
23860348 | 1707 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1708 | |
1709 | #define MAXTHREADLISTRESULTS 32 | |
1710 | ||
1711 | static int | |
fba45db2 KB |
1712 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1713 | int looplimit) | |
c906108c SS |
1714 | { |
1715 | int done, i, result_count; | |
1716 | int startflag = 1; | |
1717 | int result = 1; | |
1718 | int loopcount = 0; | |
1719 | static threadref nextthread; | |
1720 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1721 | ||
1722 | done = 0; | |
1723 | while (!done) | |
1724 | { | |
1725 | if (loopcount++ > looplimit) | |
1726 | { | |
1727 | result = 0; | |
8a3fe4f8 | 1728 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1729 | break; |
1730 | } | |
1731 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1732 | &done, &result_count, resultthreadlist)) | |
1733 | { | |
1734 | result = 0; | |
1735 | break; | |
1736 | } | |
23860348 | 1737 | /* Clear for later iterations. */ |
c906108c SS |
1738 | startflag = 0; |
1739 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1740 | if (result_count >= 1) | |
1741 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1742 | i = 0; | |
1743 | while (result_count--) | |
1744 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1745 | break; | |
1746 | } | |
1747 | return result; | |
1748 | } | |
1749 | ||
1750 | static int | |
fba45db2 | 1751 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1752 | { |
39f77062 | 1753 | ptid_t ptid; |
c906108c | 1754 | |
39f77062 KB |
1755 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1756 | ||
1757 | if (!in_thread_list (ptid)) | |
1758 | add_thread (ptid); | |
c906108c SS |
1759 | return 1; /* continue iterator */ |
1760 | } | |
1761 | ||
1762 | #define CRAZY_MAX_THREADS 1000 | |
1763 | ||
39f77062 KB |
1764 | static ptid_t |
1765 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1766 | { |
d01949b6 AC |
1767 | struct remote_state *rs = get_remote_state (); |
1768 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1769 | |
1770 | putpkt ("qC"); | |
d01949b6 | 1771 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1772 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1773 | /* Use strtoul here, so we'll correctly parse values whose highest |
1774 | bit is set. The protocol carries them as a simple series of | |
1775 | hex digits; in the absence of a sign, strtol will see such | |
1776 | values as positive numbers out of range for signed 'long', and | |
1777 | return LONG_MAX to indicate an overflow. */ | |
1778 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1779 | else |
1780 | return oldpid; | |
1781 | } | |
1782 | ||
802188a7 RM |
1783 | /* Find new threads for info threads command. |
1784 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1785 | */ |
cce74817 JM |
1786 | |
1787 | static void | |
fba45db2 | 1788 | remote_find_new_threads (void) |
c906108c | 1789 | { |
c5aa993b JM |
1790 | remote_threadlist_iterator (remote_newthread_step, 0, |
1791 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1792 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1793 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1794 | } |
1795 | ||
9d1f7ab2 MS |
1796 | /* |
1797 | * Find all threads for info threads command. | |
1798 | * Uses new thread protocol contributed by Cisco. | |
1799 | * Falls back and attempts to use the older method (above) | |
1800 | * if the target doesn't respond to the new method. | |
1801 | */ | |
1802 | ||
0f71a2f6 JM |
1803 | static void |
1804 | remote_threads_info (void) | |
1805 | { | |
d01949b6 AC |
1806 | struct remote_state *rs = get_remote_state (); |
1807 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1808 | char *bufp; |
0f71a2f6 JM |
1809 | int tid; |
1810 | ||
1811 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1812 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1813 | |
9d1f7ab2 MS |
1814 | if (use_threadinfo_query) |
1815 | { | |
1816 | putpkt ("qfThreadInfo"); | |
1817 | bufp = buf; | |
d01949b6 | 1818 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 | 1819 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1820 | { |
9d1f7ab2 MS |
1821 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1822 | { | |
1823 | do | |
1824 | { | |
c273b20f JB |
1825 | /* Use strtoul here, so we'll correctly parse values |
1826 | whose highest bit is set. The protocol carries | |
1827 | them as a simple series of hex digits; in the | |
1828 | absence of a sign, strtol will see such values as | |
1829 | positive numbers out of range for signed 'long', | |
1830 | and return LONG_MAX to indicate an overflow. */ | |
1831 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1832 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1833 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1834 | } |
1835 | while (*bufp++ == ','); /* comma-separated list */ | |
1836 | putpkt ("qsThreadInfo"); | |
1837 | bufp = buf; | |
d01949b6 | 1838 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1839 | } |
1840 | return; /* done */ | |
1841 | } | |
1842 | } | |
1843 | ||
23860348 | 1844 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1845 | use_threadinfo_query = 0; |
1846 | remote_find_new_threads (); | |
1847 | return; | |
1848 | } | |
1849 | ||
802188a7 | 1850 | /* |
9d1f7ab2 MS |
1851 | * Collect a descriptive string about the given thread. |
1852 | * The target may say anything it wants to about the thread | |
1853 | * (typically info about its blocked / runnable state, name, etc.). | |
1854 | * This string will appear in the info threads display. | |
802188a7 | 1855 | * |
9d1f7ab2 MS |
1856 | * Optional: targets are not required to implement this function. |
1857 | */ | |
1858 | ||
1859 | static char * | |
1860 | remote_threads_extra_info (struct thread_info *tp) | |
1861 | { | |
d01949b6 | 1862 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1863 | int result; |
1864 | int set; | |
1865 | threadref id; | |
1866 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1867 | static char display_buf[100]; /* arbitrary... */ |
d01949b6 | 1868 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1869 | int n = 0; /* position in display_buf */ |
1870 | ||
1871 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1872 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1873 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1874 | |
1875 | if (use_threadextra_query) | |
1876 | { | |
39f77062 | 1877 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1878 | putpkt (bufp); |
d01949b6 | 1879 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1880 | if (bufp[0] != 0) |
1881 | { | |
30559e10 MS |
1882 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1883 | result = hex2bin (bufp, display_buf, n); | |
1884 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1885 | return display_buf; |
1886 | } | |
0f71a2f6 | 1887 | } |
9d1f7ab2 MS |
1888 | |
1889 | /* If the above query fails, fall back to the old method. */ | |
1890 | use_threadextra_query = 0; | |
1891 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1892 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1893 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1894 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1895 | if (threadinfo.active) | |
0f71a2f6 | 1896 | { |
9d1f7ab2 MS |
1897 | if (*threadinfo.shortname) |
1898 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1899 | if (*threadinfo.display) | |
1900 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1901 | if (*threadinfo.more_display) | |
1902 | n += sprintf(&display_buf[n], " Priority: %s", | |
1903 | threadinfo.more_display); | |
1904 | ||
1905 | if (n > 0) | |
c5aa993b | 1906 | { |
23860348 | 1907 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1908 | if (',' == display_buf[n-1]) |
1909 | display_buf[n-1] = ' '; | |
1910 | return display_buf; | |
c5aa993b | 1911 | } |
0f71a2f6 | 1912 | } |
9d1f7ab2 | 1913 | return NULL; |
0f71a2f6 | 1914 | } |
9d1f7ab2 | 1915 | |
c906108c | 1916 | \f |
c5aa993b | 1917 | |
c906108c SS |
1918 | /* Restart the remote side; this is an extended protocol operation. */ |
1919 | ||
1920 | static void | |
fba45db2 | 1921 | extended_remote_restart (void) |
c906108c | 1922 | { |
d01949b6 AC |
1923 | struct remote_state *rs = get_remote_state (); |
1924 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1925 | |
1926 | /* Send the restart command; for reasons I don't understand the | |
1927 | remote side really expects a number after the "R". */ | |
1928 | buf[0] = 'R'; | |
1929 | sprintf (&buf[1], "%x", 0); | |
1930 | putpkt (buf); | |
1931 | ||
1932 | /* Now query for status so this looks just like we restarted | |
1933 | gdbserver from scratch. */ | |
1934 | putpkt ("?"); | |
d01949b6 | 1935 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1936 | } |
1937 | \f | |
1938 | /* Clean up connection to a remote debugger. */ | |
1939 | ||
c906108c | 1940 | static void |
fba45db2 | 1941 | remote_close (int quitting) |
c906108c SS |
1942 | { |
1943 | if (remote_desc) | |
2cd58942 | 1944 | serial_close (remote_desc); |
c906108c SS |
1945 | remote_desc = NULL; |
1946 | } | |
1947 | ||
23860348 | 1948 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1949 | |
1950 | static void | |
fba45db2 | 1951 | get_offsets (void) |
c906108c | 1952 | { |
d01949b6 AC |
1953 | struct remote_state *rs = get_remote_state (); |
1954 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1955 | char *ptr; |
c906108c SS |
1956 | int lose; |
1957 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1958 | struct section_offsets *offs; | |
1959 | ||
1960 | putpkt ("qOffsets"); | |
1961 | ||
d01949b6 | 1962 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1963 | |
1964 | if (buf[0] == '\000') | |
1965 | return; /* Return silently. Stub doesn't support | |
23860348 | 1966 | this command. */ |
c906108c SS |
1967 | if (buf[0] == 'E') |
1968 | { | |
8a3fe4f8 | 1969 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1970 | return; |
1971 | } | |
1972 | ||
1973 | /* Pick up each field in turn. This used to be done with scanf, but | |
1974 | scanf will make trouble if CORE_ADDR size doesn't match | |
1975 | conversion directives correctly. The following code will work | |
1976 | with any size of CORE_ADDR. */ | |
1977 | text_addr = data_addr = bss_addr = 0; | |
1978 | ptr = buf; | |
1979 | lose = 0; | |
1980 | ||
1981 | if (strncmp (ptr, "Text=", 5) == 0) | |
1982 | { | |
1983 | ptr += 5; | |
1984 | /* Don't use strtol, could lose on big values. */ | |
1985 | while (*ptr && *ptr != ';') | |
1986 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1987 | } | |
1988 | else | |
1989 | lose = 1; | |
1990 | ||
1991 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1992 | { | |
1993 | ptr += 6; | |
1994 | while (*ptr && *ptr != ';') | |
1995 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1996 | } | |
1997 | else | |
1998 | lose = 1; | |
1999 | ||
2000 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2001 | { | |
2002 | ptr += 5; | |
2003 | while (*ptr && *ptr != ';') | |
2004 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
2005 | } | |
2006 | else | |
2007 | lose = 1; | |
2008 | ||
2009 | if (lose) | |
8a3fe4f8 | 2010 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
2011 | |
2012 | if (symfile_objfile == NULL) | |
2013 | return; | |
2014 | ||
802188a7 | 2015 | offs = ((struct section_offsets *) |
a39a16c4 | 2016 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2017 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2018 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2019 | |
a4c8257b | 2020 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
2021 | |
2022 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2023 | because that's what nlmconv does now. The real solution requires changes | |
2024 | to the stub and remote.c that I don't have time to do right now. */ | |
2025 | ||
a4c8257b EZ |
2026 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
2027 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
2028 | |
2029 | objfile_relocate (symfile_objfile, offs); | |
2030 | } | |
2031 | ||
2032 | /* Stub for catch_errors. */ | |
2033 | ||
0f71a2f6 | 2034 | static int |
36918e70 | 2035 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 2036 | { |
23860348 | 2037 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
2038 | /* NOTE: Return something >=0. A -ve value is reserved for |
2039 | catch_exceptions. */ | |
0f71a2f6 JM |
2040 | return 1; |
2041 | } | |
2042 | ||
9cbc821d | 2043 | static void |
36918e70 | 2044 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 2045 | { |
23860348 | 2046 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2047 | |
2048 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2049 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2050 | |
2051 | /* Let the stub know that we want it to return the thread. */ | |
2052 | set_thread (-1, 0); | |
2053 | ||
39f77062 | 2054 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2055 | |
23860348 | 2056 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2057 | |
23860348 | 2058 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2059 | immediate_quit--; |
c906108c | 2060 | |
9cbc821d | 2061 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
2062 | } |
2063 | ||
2064 | /* Open a connection to a remote debugger. | |
2065 | NAME is the filename used for communication. */ | |
2066 | ||
2067 | static void | |
fba45db2 | 2068 | remote_open (char *name, int from_tty) |
c906108c | 2069 | { |
92d1e331 | 2070 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2071 | } |
2072 | ||
23860348 | 2073 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2074 | static void |
fba45db2 | 2075 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2076 | { |
92d1e331 | 2077 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2078 | } |
2079 | ||
c906108c SS |
2080 | /* Open a connection to a remote debugger using the extended |
2081 | remote gdb protocol. NAME is the filename used for communication. */ | |
2082 | ||
2083 | static void | |
fba45db2 | 2084 | extended_remote_open (char *name, int from_tty) |
c906108c | 2085 | { |
92d1e331 DJ |
2086 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2087 | 0 /* async_p */); | |
c906108c SS |
2088 | } |
2089 | ||
23860348 | 2090 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2091 | static void |
fba45db2 | 2092 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2093 | { |
92d1e331 DJ |
2094 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2095 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2096 | } |
2097 | ||
c906108c SS |
2098 | /* Generic code for opening a connection to a remote target. */ |
2099 | ||
d471ea57 AC |
2100 | static void |
2101 | init_all_packet_configs (void) | |
2102 | { | |
2103 | int i; | |
2104 | update_packet_config (&remote_protocol_P); | |
b96ec7ac | 2105 | update_packet_config (&remote_protocol_p); |
dc8acb97 | 2106 | update_packet_config (&remote_protocol_qSymbol); |
506fb367 | 2107 | update_packet_config (&remote_protocol_vcont); |
d471ea57 AC |
2108 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2109 | update_packet_config (&remote_protocol_Z[i]); | |
2110 | /* Force remote_write_bytes to check whether target supports binary | |
23860348 | 2111 | downloading. */ |
d471ea57 | 2112 | update_packet_config (&remote_protocol_binary_download); |
802188a7 | 2113 | update_packet_config (&remote_protocol_qPart_auxv); |
d471ea57 AC |
2114 | } |
2115 | ||
23860348 | 2116 | /* Symbol look-up. */ |
dc8acb97 MS |
2117 | |
2118 | static void | |
2119 | remote_check_symbols (struct objfile *objfile) | |
2120 | { | |
d01949b6 | 2121 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2122 | char *msg, *reply, *tmp; |
2123 | struct minimal_symbol *sym; | |
2124 | int end; | |
2125 | ||
2126 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2127 | return; | |
2128 | ||
d01949b6 AC |
2129 | msg = alloca (rs->remote_packet_size); |
2130 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 | 2131 | |
23860348 | 2132 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2133 | |
2134 | putpkt ("qSymbol::"); | |
d01949b6 | 2135 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2136 | packet_ok (reply, &remote_protocol_qSymbol); |
2137 | ||
2138 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2139 | { | |
2140 | tmp = &reply[8]; | |
2141 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2142 | msg[end] = '\0'; | |
2143 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2144 | if (sym == NULL) | |
2145 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2146 | else | |
802188a7 | 2147 | sprintf (msg, "qSymbol:%s:%s", |
dc8acb97 MS |
2148 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2149 | &reply[8]); | |
2150 | putpkt (msg); | |
d01949b6 | 2151 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2152 | } |
2153 | } | |
2154 | ||
9db8d71f DJ |
2155 | static struct serial * |
2156 | remote_serial_open (char *name) | |
2157 | { | |
2158 | static int udp_warning = 0; | |
2159 | ||
2160 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2161 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2162 | serial connection is reliable and not the serial connection promising | |
2163 | to be. */ | |
2164 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2165 | { | |
8a3fe4f8 AC |
2166 | warning (_("\ |
2167 | The remote protocol may be unreliable over UDP.\n\ | |
2168 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2169 | udp_warning = 1; |
2170 | } | |
2171 | ||
2172 | return serial_open (name); | |
2173 | } | |
2174 | ||
c906108c | 2175 | static void |
fba45db2 | 2176 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2177 | int extended_p, int async_p) |
c906108c | 2178 | { |
9cbc821d | 2179 | struct exception ex; |
d01949b6 | 2180 | struct remote_state *rs = get_remote_state (); |
c906108c | 2181 | if (name == 0) |
8a3fe4f8 | 2182 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2183 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2184 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2185 | |
23860348 | 2186 | /* See FIXME above. */ |
92d1e331 DJ |
2187 | if (!async_p) |
2188 | wait_forever_enabled_p = 1; | |
6426a772 | 2189 | |
00cac895 DJ |
2190 | reopen_exec_file (); |
2191 | reread_symbols (); | |
2192 | ||
c906108c SS |
2193 | target_preopen (from_tty); |
2194 | ||
2195 | unpush_target (target); | |
2196 | ||
9db8d71f | 2197 | remote_desc = remote_serial_open (name); |
c906108c SS |
2198 | if (!remote_desc) |
2199 | perror_with_name (name); | |
2200 | ||
2201 | if (baud_rate != -1) | |
2202 | { | |
2cd58942 | 2203 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2204 | { |
9b74d5d3 KB |
2205 | /* The requested speed could not be set. Error out to |
2206 | top level after closing remote_desc. Take care to | |
2207 | set remote_desc to NULL to avoid closing remote_desc | |
2208 | more than once. */ | |
2cd58942 | 2209 | serial_close (remote_desc); |
9b74d5d3 | 2210 | remote_desc = NULL; |
c906108c SS |
2211 | perror_with_name (name); |
2212 | } | |
2213 | } | |
2214 | ||
2cd58942 | 2215 | serial_raw (remote_desc); |
c906108c SS |
2216 | |
2217 | /* If there is something sitting in the buffer we might take it as a | |
2218 | response to a command, which would be bad. */ | |
2cd58942 | 2219 | serial_flush_input (remote_desc); |
c906108c SS |
2220 | |
2221 | if (from_tty) | |
2222 | { | |
2223 | puts_filtered ("Remote debugging using "); | |
2224 | puts_filtered (name); | |
2225 | puts_filtered ("\n"); | |
2226 | } | |
23860348 | 2227 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2228 | |
d471ea57 | 2229 | init_all_packet_configs (); |
802188a7 | 2230 | |
c5aa993b | 2231 | general_thread = -2; |
cce74817 | 2232 | continue_thread = -2; |
c906108c | 2233 | |
9d1f7ab2 MS |
2234 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2235 | use_threadinfo_query = 1; | |
2236 | use_threadextra_query = 1; | |
2237 | ||
c906108c SS |
2238 | /* Without this, some commands which require an active target (such |
2239 | as kill) won't work. This variable serves (at least) double duty | |
2240 | as both the pid of the target process (if it has such), and as a | |
2241 | flag indicating that a target is active. These functions should | |
2242 | be split out into seperate variables, especially since GDB will | |
2243 | someday have a notion of debugging several processes. */ | |
2244 | ||
39f77062 | 2245 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2246 | |
2247 | if (async_p) | |
2248 | { | |
23860348 | 2249 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2250 | remote_async_terminal_ours_p = 1; |
2251 | ||
2252 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2253 | assumed that the target is already ready and able to respond to | |
2254 | requests. Unfortunately remote_start_remote() eventually calls | |
2255 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2256 | around this. Eventually a mechanism that allows | |
2257 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2258 | implemented. */ |
92d1e331 DJ |
2259 | wait_forever_enabled_p = 0; |
2260 | } | |
2261 | ||
f78f6cf1 | 2262 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
23860348 | 2263 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 MS |
2264 | no_shared_libraries (NULL, 0); |
2265 | #endif | |
2266 | ||
36918e70 | 2267 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2268 | target (we'd otherwise be in an inconsistent state) and then |
2269 | propogate the error on up the exception chain. This ensures that | |
2270 | the caller doesn't stumble along blindly assuming that the | |
2271 | function succeeded. The CLI doesn't have this problem but other | |
2272 | UI's, such as MI do. | |
36918e70 AC |
2273 | |
2274 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2275 | this function should return an error indication letting the | |
ce2826aa | 2276 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2277 | ``target remote'' is directly wired to this function making that |
2278 | impossible. On a positive note, the CLI side of this problem has | |
2279 | been fixed - the function set_cmd_context() makes it possible for | |
2280 | all the ``target ....'' commands to share a common callback | |
2281 | function. See cli-dump.c. */ | |
9cbc821d | 2282 | ex = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); |
9cbc821d | 2283 | if (ex.reason < 0) |
c906108c SS |
2284 | { |
2285 | pop_target (); | |
92d1e331 DJ |
2286 | if (async_p) |
2287 | wait_forever_enabled_p = 1; | |
9ee907e0 | 2288 | throw_exception (ex); |
c906108c SS |
2289 | } |
2290 | ||
92d1e331 DJ |
2291 | if (async_p) |
2292 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2293 | |
2294 | if (extended_p) | |
43ff13b4 | 2295 | { |
6240bebf | 2296 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2297 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2298 | putpkt ("!"); |
d01949b6 | 2299 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2300 | } |
f78f6cf1 | 2301 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
802188a7 RM |
2302 | /* FIXME: need a master target_open vector from which all |
2303 | remote_opens can be called, so that stuff like this can | |
6240bebf | 2304 | go there. Failing that, the following code must be copied |
802188a7 | 2305 | to the open function for any remote target that wants to |
6240bebf | 2306 | support svr4 shared libraries. */ |
f78f6cf1 | 2307 | |
23860348 MS |
2308 | /* Set up to detect and load shared libraries. */ |
2309 | if (exec_bfd) /* No use without an exec file. */ | |
dc8acb97 MS |
2310 | { |
2311 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2312 | remote_check_symbols (symfile_objfile); | |
2313 | } | |
6240bebf | 2314 | #endif |
43ff13b4 JM |
2315 | } |
2316 | ||
c906108c SS |
2317 | /* This takes a program previously attached to and detaches it. After |
2318 | this is done, GDB can be used to debug some other program. We | |
2319 | better not have left any breakpoints in the target program or it'll | |
2320 | die when it hits one. */ | |
2321 | ||
2322 | static void | |
fba45db2 | 2323 | remote_detach (char *args, int from_tty) |
c906108c | 2324 | { |
d01949b6 AC |
2325 | struct remote_state *rs = get_remote_state (); |
2326 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2327 | |
2328 | if (args) | |
8a3fe4f8 | 2329 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2330 | |
2331 | /* Tell the remote target to detach. */ | |
2332 | strcpy (buf, "D"); | |
d01949b6 | 2333 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2334 | |
23860348 | 2335 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2336 | if (target_is_async_p ()) |
2337 | serial_async (remote_desc, NULL, 0); | |
2338 | ||
cca728d0 | 2339 | target_mourn_inferior (); |
c906108c SS |
2340 | if (from_tty) |
2341 | puts_filtered ("Ending remote debugging.\n"); | |
2342 | } | |
2343 | ||
6ad8ae5c DJ |
2344 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2345 | ||
43ff13b4 | 2346 | static void |
6ad8ae5c | 2347 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2348 | { |
d01949b6 AC |
2349 | struct remote_state *rs = get_remote_state (); |
2350 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2351 | |
2352 | if (args) | |
8a3fe4f8 | 2353 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2354 | |
23860348 | 2355 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2356 | if (target_is_async_p ()) |
2cd58942 | 2357 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2358 | |
cca728d0 | 2359 | target_mourn_inferior (); |
43ff13b4 JM |
2360 | if (from_tty) |
2361 | puts_filtered ("Ending remote debugging.\n"); | |
2362 | } | |
2363 | ||
c906108c SS |
2364 | /* Convert hex digit A to a number. */ |
2365 | ||
30559e10 | 2366 | static int |
fba45db2 | 2367 | fromhex (int a) |
c906108c SS |
2368 | { |
2369 | if (a >= '0' && a <= '9') | |
2370 | return a - '0'; | |
2371 | else if (a >= 'a' && a <= 'f') | |
2372 | return a - 'a' + 10; | |
2373 | else if (a >= 'A' && a <= 'F') | |
2374 | return a - 'A' + 10; | |
c5aa993b | 2375 | else |
8a3fe4f8 | 2376 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2377 | } |
2378 | ||
30559e10 MS |
2379 | static int |
2380 | hex2bin (const char *hex, char *bin, int count) | |
2381 | { | |
2382 | int i; | |
2383 | ||
30559e10 MS |
2384 | for (i = 0; i < count; i++) |
2385 | { | |
2386 | if (hex[0] == 0 || hex[1] == 0) | |
2387 | { | |
2388 | /* Hex string is short, or of uneven length. | |
23860348 | 2389 | Return the count that has been converted so far. */ |
30559e10 MS |
2390 | return i; |
2391 | } | |
2392 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2393 | hex += 2; | |
2394 | } | |
2395 | return i; | |
2396 | } | |
2397 | ||
c906108c SS |
2398 | /* Convert number NIB to a hex digit. */ |
2399 | ||
2400 | static int | |
fba45db2 | 2401 | tohex (int nib) |
c906108c SS |
2402 | { |
2403 | if (nib < 10) | |
c5aa993b | 2404 | return '0' + nib; |
c906108c | 2405 | else |
c5aa993b | 2406 | return 'a' + nib - 10; |
c906108c | 2407 | } |
30559e10 MS |
2408 | |
2409 | static int | |
234fa6d1 | 2410 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2411 | { |
2412 | int i; | |
23860348 | 2413 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 MS |
2414 | if (count == 0) |
2415 | count = strlen (bin); | |
2416 | ||
2417 | for (i = 0; i < count; i++) | |
2418 | { | |
2419 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2420 | *hex++ = tohex (*bin++ & 0xf); | |
2421 | } | |
2422 | *hex = 0; | |
2423 | return i; | |
2424 | } | |
c906108c | 2425 | \f |
506fb367 DJ |
2426 | /* Check for the availability of vCont. This function should also check |
2427 | the response. */ | |
c906108c SS |
2428 | |
2429 | static void | |
506fb367 | 2430 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2431 | { |
506fb367 DJ |
2432 | strcpy (buf, "vCont?"); |
2433 | putpkt (buf); | |
2434 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2435 | |
506fb367 DJ |
2436 | /* Make sure that the features we assume are supported. */ |
2437 | if (strncmp (buf, "vCont", 5) == 0) | |
2438 | { | |
2439 | char *p = &buf[5]; | |
2440 | int support_s, support_S, support_c, support_C; | |
2441 | ||
2442 | support_s = 0; | |
2443 | support_S = 0; | |
2444 | support_c = 0; | |
2445 | support_C = 0; | |
2446 | while (p && *p == ';') | |
2447 | { | |
2448 | p++; | |
2449 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2450 | support_s = 1; | |
2451 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2452 | support_S = 1; | |
2453 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2454 | support_c = 1; | |
2455 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2456 | support_C = 1; | |
2457 | ||
2458 | p = strchr (p, ';'); | |
2459 | } | |
c906108c | 2460 | |
506fb367 DJ |
2461 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2462 | BUF will make packet_ok disable the packet. */ | |
2463 | if (!support_s || !support_S || !support_c || !support_C) | |
2464 | buf[0] = 0; | |
2465 | } | |
c906108c | 2466 | |
506fb367 DJ |
2467 | packet_ok (buf, &remote_protocol_vcont); |
2468 | } | |
c906108c | 2469 | |
506fb367 DJ |
2470 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2471 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2472 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2473 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2474 | signalled is given in the global INFERIOR_PTID. This function returns | |
2475 | non-zero iff it resumes the inferior. | |
44eaed12 | 2476 | |
506fb367 DJ |
2477 | This function issues a strict subset of all possible vCont commands at the |
2478 | moment. */ | |
44eaed12 | 2479 | |
506fb367 DJ |
2480 | static int |
2481 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2482 | { | |
2483 | struct remote_state *rs = get_remote_state (); | |
2484 | int pid = PIDGET (ptid); | |
2963ee1d | 2485 | char *buf = NULL, *outbuf; |
506fb367 | 2486 | struct cleanup *old_cleanup; |
44eaed12 | 2487 | |
506fb367 DJ |
2488 | buf = xmalloc (rs->remote_packet_size); |
2489 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2490 | |
506fb367 DJ |
2491 | if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN) |
2492 | remote_vcont_probe (rs, buf); | |
44eaed12 | 2493 | |
506fb367 DJ |
2494 | if (remote_protocol_vcont.support == PACKET_DISABLE) |
2495 | { | |
2496 | do_cleanups (old_cleanup); | |
2497 | return 0; | |
44eaed12 C |
2498 | } |
2499 | ||
506fb367 DJ |
2500 | /* If we could generate a wider range of packets, we'd have to worry |
2501 | about overflowing BUF. Should there be a generic | |
2502 | "multi-part-packet" packet? */ | |
2503 | ||
2504 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2505 | { |
506fb367 DJ |
2506 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2507 | don't have any PID numbers the inferior will understand. Make sure | |
2508 | to only send forms that do not specify a PID. */ | |
2509 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2510 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2511 | else if (step) |
2963ee1d | 2512 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2513 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2514 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2515 | else |
2963ee1d | 2516 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2517 | } |
2518 | else if (pid == -1) | |
2519 | { | |
2520 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2521 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2522 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2523 | PIDGET (inferior_ptid)); | |
506fb367 | 2524 | else if (step) |
2963ee1d | 2525 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2526 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2527 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2528 | PIDGET (inferior_ptid)); | |
506fb367 | 2529 | else |
2963ee1d | 2530 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2531 | } |
2532 | else | |
506fb367 DJ |
2533 | { |
2534 | /* Scheduler locking; resume only PTID. */ | |
2535 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2536 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2537 | else if (step) |
2963ee1d | 2538 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2539 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2540 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2541 | else |
2963ee1d | 2542 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2543 | } |
c906108c | 2544 | |
2963ee1d DJ |
2545 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
2546 | make_cleanup (xfree, outbuf); | |
2547 | ||
2548 | putpkt (outbuf); | |
506fb367 DJ |
2549 | |
2550 | do_cleanups (old_cleanup); | |
2551 | ||
2552 | return 1; | |
c906108c | 2553 | } |
43ff13b4 | 2554 | |
506fb367 DJ |
2555 | /* Tell the remote machine to resume. */ |
2556 | ||
2557 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2558 | ||
2559 | static int last_sent_step; | |
2560 | ||
43ff13b4 | 2561 | static void |
506fb367 | 2562 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2563 | { |
d01949b6 AC |
2564 | struct remote_state *rs = get_remote_state (); |
2565 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2566 | int pid = PIDGET (ptid); |
44eaed12 | 2567 | char *p; |
43ff13b4 | 2568 | |
43ff13b4 JM |
2569 | last_sent_signal = siggnal; |
2570 | last_sent_step = step; | |
2571 | ||
2572 | /* A hook for when we need to do something at the last moment before | |
2573 | resumption. */ | |
9a4105ab AC |
2574 | if (deprecated_target_resume_hook) |
2575 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2576 | |
506fb367 DJ |
2577 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2578 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2579 | return; | |
2580 | ||
2581 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2582 | if (pid == -1) | |
23860348 | 2583 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2584 | else |
23860348 | 2585 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2586 | |
43ff13b4 JM |
2587 | if (siggnal != TARGET_SIGNAL_0) |
2588 | { | |
2589 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2590 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2591 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2592 | buf[3] = '\0'; |
2593 | } | |
2594 | else | |
c5aa993b | 2595 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2596 | |
44eaed12 | 2597 | putpkt (buf); |
506fb367 DJ |
2598 | } |
2599 | ||
23860348 | 2600 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2601 | static void |
2602 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2603 | { | |
2604 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2605 | |
2acceee2 JM |
2606 | /* We are about to start executing the inferior, let's register it |
2607 | with the event loop. NOTE: this is the one place where all the | |
2608 | execution commands end up. We could alternatively do this in each | |
23860348 | 2609 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2610 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2611 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2612 | NOT asynchronously. */ |
362646f5 | 2613 | if (target_can_async_p ()) |
2acceee2 | 2614 | target_async (inferior_event_handler, 0); |
23860348 | 2615 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2616 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2617 | this? Instead, should the client of target just assume (for | |
2618 | async targets) that the target is going to start executing? Is | |
2619 | this information already found in the continuation block? */ | |
ed9a39eb | 2620 | if (target_is_async_p ()) |
2acceee2 | 2621 | target_executing = 1; |
43ff13b4 | 2622 | } |
c906108c | 2623 | \f |
43ff13b4 JM |
2624 | |
2625 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2626 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2627 | static void |
fba45db2 | 2628 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2629 | { |
c5aa993b | 2630 | sigint_remote_token = |
43ff13b4 JM |
2631 | create_async_signal_handler (async_remote_interrupt, NULL); |
2632 | signal (SIGINT, handle_remote_sigint); | |
2633 | } | |
2634 | ||
23860348 | 2635 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2636 | static void |
fba45db2 | 2637 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2638 | { |
2639 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2640 | sigint_remote_twice_token = |
43ff13b4 JM |
2641 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2642 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2643 | } | |
2644 | ||
2645 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2646 | sent once. It will take effect the second time that the user sends | |
23860348 | 2647 | a ^C. */ |
43ff13b4 | 2648 | static void |
fba45db2 | 2649 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2650 | { |
2651 | signal (sig, handle_sigint); | |
c5aa993b | 2652 | sigint_remote_twice_token = |
2df3850c | 2653 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2654 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2655 | } | |
2656 | ||
6426a772 | 2657 | /* Perform the real interruption of the target execution, in response |
23860348 | 2658 | to a ^C. */ |
c5aa993b | 2659 | static void |
fba45db2 | 2660 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2661 | { |
2662 | if (remote_debug) | |
2663 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2664 | ||
2665 | target_stop (); | |
2666 | } | |
2667 | ||
2668 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2669 | up on the target alltogether. */ |
2df3850c | 2670 | void |
fba45db2 | 2671 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2672 | { |
2df3850c JM |
2673 | if (remote_debug) |
2674 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2675 | /* Do something only if the target was not killed by the previous |
23860348 | 2676 | cntl-C. */ |
6426a772 JM |
2677 | if (target_executing) |
2678 | { | |
2679 | interrupt_query (); | |
2680 | signal (SIGINT, handle_remote_sigint); | |
2681 | } | |
43ff13b4 JM |
2682 | } |
2683 | ||
2684 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2685 | stopped. */ |
6426a772 JM |
2686 | static void |
2687 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2688 | { |
2689 | signal (SIGINT, handle_sigint); | |
2690 | if (sigint_remote_twice_token) | |
23860348 MS |
2691 | delete_async_signal_handler ((struct async_signal_handler **) |
2692 | &sigint_remote_twice_token); | |
43ff13b4 | 2693 | if (sigint_remote_token) |
23860348 MS |
2694 | delete_async_signal_handler ((struct async_signal_handler **) |
2695 | &sigint_remote_token); | |
43ff13b4 JM |
2696 | } |
2697 | ||
c906108c SS |
2698 | /* Send ^C to target to halt it. Target will respond, and send us a |
2699 | packet. */ | |
507f3c78 | 2700 | static void (*ofunc) (int); |
c906108c | 2701 | |
7a292a7a SS |
2702 | /* The command line interface's stop routine. This function is installed |
2703 | as a signal handler for SIGINT. The first time a user requests a | |
2704 | stop, we call remote_stop to send a break or ^C. If there is no | |
2705 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2706 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2707 | static void |
fba45db2 | 2708 | remote_interrupt (int signo) |
c906108c | 2709 | { |
23860348 | 2710 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2711 | signal (signo, remote_interrupt_twice); |
2712 | ||
2713 | if (remote_debug) | |
0f71a2f6 | 2714 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2715 | |
2716 | target_stop (); | |
2717 | } | |
2718 | ||
2719 | /* The user typed ^C twice. */ | |
2720 | ||
2721 | static void | |
fba45db2 | 2722 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2723 | { |
2724 | signal (signo, ofunc); | |
2725 | interrupt_query (); | |
c906108c SS |
2726 | signal (signo, remote_interrupt); |
2727 | } | |
7a292a7a SS |
2728 | |
2729 | /* This is the generic stop called via the target vector. When a target | |
2730 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2731 | will eventually end up here. */ |
c906108c | 2732 | static void |
fba45db2 | 2733 | remote_stop (void) |
c906108c | 2734 | { |
7a292a7a SS |
2735 | /* Send a break or a ^C, depending on user preference. */ |
2736 | if (remote_debug) | |
0f71a2f6 | 2737 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2738 | |
7a292a7a | 2739 | if (remote_break) |
2cd58942 | 2740 | serial_send_break (remote_desc); |
c906108c | 2741 | else |
2cd58942 | 2742 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2743 | } |
2744 | ||
2745 | /* Ask the user what to do when an interrupt is received. */ | |
2746 | ||
2747 | static void | |
fba45db2 | 2748 | interrupt_query (void) |
c906108c SS |
2749 | { |
2750 | target_terminal_ours (); | |
2751 | ||
2752 | if (query ("Interrupted while waiting for the program.\n\ | |
2753 | Give up (and stop debugging it)? ")) | |
2754 | { | |
2755 | target_mourn_inferior (); | |
315a522e | 2756 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2757 | } |
2758 | ||
2759 | target_terminal_inferior (); | |
2760 | } | |
2761 | ||
6426a772 JM |
2762 | /* Enable/disable target terminal ownership. Most targets can use |
2763 | terminal groups to control terminal ownership. Remote targets are | |
2764 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2765 | is required. */ |
6426a772 JM |
2766 | |
2767 | static void | |
2768 | remote_async_terminal_inferior (void) | |
2769 | { | |
2770 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2771 | sync_execution here. This function should only be called when | |
2772 | GDB is resuming the inferior in the forground. A background | |
2773 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2774 | consequently should not call this code. */ |
6426a772 JM |
2775 | if (!sync_execution) |
2776 | return; | |
2777 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2778 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2779 | to an asynchronous target with a synchronous command calls this | |
2780 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2781 | stops trying to transfer the terminal to the target when it | |
2782 | shouldn't this guard can go away. */ | |
2783 | if (!remote_async_terminal_ours_p) | |
2784 | return; | |
2785 | delete_file_handler (input_fd); | |
2786 | remote_async_terminal_ours_p = 0; | |
2787 | initialize_sigint_signal_handler (); | |
2788 | /* NOTE: At this point we could also register our selves as the | |
2789 | recipient of all input. Any characters typed could then be | |
23860348 | 2790 | passed on down to the target. */ |
6426a772 JM |
2791 | } |
2792 | ||
2793 | static void | |
2794 | remote_async_terminal_ours (void) | |
2795 | { | |
23860348 | 2796 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2797 | if (!sync_execution) |
2798 | return; | |
23860348 | 2799 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2800 | if (remote_async_terminal_ours_p) |
2801 | return; | |
2802 | cleanup_sigint_signal_handler (NULL); | |
2803 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2804 | remote_async_terminal_ours_p = 1; | |
2805 | } | |
2806 | ||
c906108c SS |
2807 | /* If nonzero, ignore the next kill. */ |
2808 | ||
2809 | int kill_kludge; | |
2810 | ||
2811 | void | |
917317f4 | 2812 | remote_console_output (char *msg) |
c906108c SS |
2813 | { |
2814 | char *p; | |
2815 | ||
c5aa993b | 2816 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2817 | { |
2818 | char tb[2]; | |
2819 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2820 | tb[0] = c; | |
2821 | tb[1] = 0; | |
43ff13b4 | 2822 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2823 | } |
917317f4 | 2824 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2825 | } |
2826 | ||
0f71a2f6 JM |
2827 | /* Wait until the remote machine stops, then return, |
2828 | storing status in STATUS just as `wait' would. | |
802188a7 | 2829 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2830 | remote OS, is the thread-id. */ |
c906108c | 2831 | |
39f77062 KB |
2832 | static ptid_t |
2833 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2834 | { |
d01949b6 AC |
2835 | struct remote_state *rs = get_remote_state (); |
2836 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2837 | ULONGEST thread_num = -1; |
3c3bea1c | 2838 | ULONGEST addr; |
c906108c SS |
2839 | |
2840 | status->kind = TARGET_WAITKIND_EXITED; | |
2841 | status->value.integer = 0; | |
2842 | ||
2843 | while (1) | |
2844 | { | |
2845 | unsigned char *p; | |
2846 | ||
c906108c | 2847 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2848 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2849 | signal (SIGINT, ofunc); |
2850 | ||
2851 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2852 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2853 | if (deprecated_target_wait_loop_hook) |
2854 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2855 | |
3c3bea1c GS |
2856 | remote_stopped_by_watchpoint_p = 0; |
2857 | ||
c906108c SS |
2858 | switch (buf[0]) |
2859 | { | |
23860348 | 2860 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2861 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 2862 | continue; |
23860348 | 2863 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2864 | remote_fileio_request (buf); |
2865 | continue; | |
23860348 | 2866 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c SS |
2867 | { |
2868 | int i; | |
d9d9c31f | 2869 | char regs[MAX_REGISTER_SIZE]; |
c906108c | 2870 | |
23860348 | 2871 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 2872 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2873 | ss = signal number |
2874 | n... = register number | |
2875 | r... = register contents | |
2876 | */ | |
c906108c SS |
2877 | p = &buf[3]; /* after Txx */ |
2878 | ||
2879 | while (*p) | |
2880 | { | |
2881 | unsigned char *p1; | |
2882 | char *p_temp; | |
97345198 | 2883 | int fieldsize; |
3c3bea1c GS |
2884 | LONGEST pnum = 0; |
2885 | ||
23860348 MS |
2886 | /* If the packet contains a register number save it in |
2887 | pnum and set p1 to point to the character following | |
2888 | it. Otherwise p1 points to p. */ | |
c906108c | 2889 | |
23860348 MS |
2890 | /* If this packet is an awatch packet, don't parse the |
2891 | 'a' as a register number. */ | |
3c3bea1c GS |
2892 | |
2893 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2894 | { | |
2895 | /* Read the ``P'' register number. */ | |
2896 | pnum = strtol (p, &p_temp, 16); | |
2897 | p1 = (unsigned char *) p_temp; | |
2898 | } | |
802188a7 | 2899 | else |
3c3bea1c | 2900 | p1 = p; |
c906108c | 2901 | |
23860348 | 2902 | if (p1 == p) /* No register number present here. */ |
c906108c | 2903 | { |
3c3bea1c | 2904 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c | 2905 | if (p1 == NULL) |
8a3fe4f8 AC |
2906 | warning (_("Malformed packet(a) (missing colon): %s\n\ |
2907 | Packet: '%s'\n"), | |
c906108c | 2908 | p, buf); |
3c3bea1c | 2909 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2910 | { |
2911 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2912 | record_currthread (thread_num); | |
2913 | p = (unsigned char *) p_temp; | |
2914 | } | |
3c3bea1c GS |
2915 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2916 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2917 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2918 | { | |
2919 | remote_stopped_by_watchpoint_p = 1; | |
2920 | p = unpack_varlen_hex (++p1, &addr); | |
2921 | remote_watch_data_address = (CORE_ADDR)addr; | |
2922 | } | |
2923 | else | |
2924 | { | |
2925 | /* Silently skip unknown optional info. */ | |
2926 | p_temp = strchr (p1 + 1, ';'); | |
2927 | if (p_temp) | |
2928 | p = (unsigned char *) p_temp; | |
2929 | } | |
c906108c SS |
2930 | } |
2931 | else | |
2932 | { | |
ad10f812 | 2933 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2934 | p = p1; |
2935 | ||
2936 | if (*p++ != ':') | |
8a3fe4f8 AC |
2937 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2938 | Packet: '%s'\n"), | |
3fcb8548 | 2939 | p, buf); |
c906108c | 2940 | |
ad10f812 | 2941 | if (reg == NULL) |
8a3fe4f8 AC |
2942 | error (_("Remote sent bad register number %s: %s\n\ |
2943 | Packet: '%s'\n"), | |
3fcb8548 | 2944 | phex_nz (pnum, 0), p, buf); |
c906108c | 2945 | |
23860348 MS |
2946 | fieldsize = hex2bin (p, regs, |
2947 | register_size (current_gdbarch, | |
2948 | reg->regnum)); | |
97345198 | 2949 | p += 2 * fieldsize; |
23860348 MS |
2950 | if (fieldsize < register_size (current_gdbarch, |
2951 | reg->regnum)) | |
8a3fe4f8 | 2952 | warning (_("Remote reply is too short: %s"), buf); |
23860348 MS |
2953 | regcache_raw_supply (current_regcache, |
2954 | reg->regnum, regs); | |
c906108c SS |
2955 | } |
2956 | ||
2957 | if (*p++ != ';') | |
8a3fe4f8 | 2958 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 2959 | buf, p); |
c906108c SS |
2960 | } |
2961 | } | |
2962 | /* fall through */ | |
23860348 | 2963 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
2964 | status->kind = TARGET_WAITKIND_STOPPED; |
2965 | status->value.sig = (enum target_signal) | |
2966 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2967 | ||
0f71a2f6 JM |
2968 | if (buf[3] == 'p') |
2969 | { | |
0f71a2f6 JM |
2970 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2971 | record_currthread (thread_num); | |
2972 | } | |
c906108c | 2973 | goto got_status; |
23860348 | 2974 | case 'W': /* Target exited. */ |
c906108c SS |
2975 | { |
2976 | /* The remote process exited. */ | |
2977 | status->kind = TARGET_WAITKIND_EXITED; | |
2978 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2979 | goto got_status; | |
2980 | } | |
2981 | case 'X': | |
2982 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2983 | status->value.sig = (enum target_signal) | |
2984 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2985 | kill_kludge = 1; | |
2986 | ||
2987 | goto got_status; | |
23860348 | 2988 | case 'O': /* Console output. */ |
c906108c SS |
2989 | remote_console_output (buf + 1); |
2990 | continue; | |
2991 | case '\0': | |
2992 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2993 | { | |
2994 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2995 | the remote system doesn't support it. */ |
c906108c SS |
2996 | target_terminal_ours_for_output (); |
2997 | printf_filtered | |
2998 | ("Can't send signals to this remote system. %s not sent.\n", | |
2999 | target_signal_to_name (last_sent_signal)); | |
3000 | last_sent_signal = TARGET_SIGNAL_0; | |
3001 | target_terminal_inferior (); | |
3002 | ||
3003 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3004 | putpkt ((char *) buf); | |
3005 | continue; | |
3006 | } | |
3007 | /* else fallthrough */ | |
3008 | default: | |
8a3fe4f8 | 3009 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3010 | continue; |
3011 | } | |
3012 | } | |
c5aa993b | 3013 | got_status: |
c906108c SS |
3014 | if (thread_num != -1) |
3015 | { | |
39f77062 | 3016 | return pid_to_ptid (thread_num); |
c906108c | 3017 | } |
39f77062 | 3018 | return inferior_ptid; |
c906108c SS |
3019 | } |
3020 | ||
23860348 | 3021 | /* Async version of remote_wait. */ |
39f77062 KB |
3022 | static ptid_t |
3023 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3024 | { |
d01949b6 AC |
3025 | struct remote_state *rs = get_remote_state (); |
3026 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 3027 | ULONGEST thread_num = -1; |
3c3bea1c | 3028 | ULONGEST addr; |
43ff13b4 JM |
3029 | |
3030 | status->kind = TARGET_WAITKIND_EXITED; | |
3031 | status->value.integer = 0; | |
3032 | ||
3c3bea1c GS |
3033 | remote_stopped_by_watchpoint_p = 0; |
3034 | ||
43ff13b4 JM |
3035 | while (1) |
3036 | { | |
3037 | unsigned char *p; | |
c5aa993b | 3038 | |
ed9a39eb | 3039 | if (!target_is_async_p ()) |
43ff13b4 | 3040 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3041 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3042 | _never_ wait for ever -> test on target_is_async_p(). | |
3043 | However, before we do that we need to ensure that the caller | |
23860348 | 3044 | knows how to take the target into/out of async mode. */ |
d01949b6 | 3045 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3046 | if (!target_is_async_p ()) |
43ff13b4 JM |
3047 | signal (SIGINT, ofunc); |
3048 | ||
3049 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3050 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3051 | if (deprecated_target_wait_loop_hook) |
3052 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3053 | |
3054 | switch (buf[0]) | |
3055 | { | |
23860348 | 3056 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3057 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3058 | continue; |
23860348 | 3059 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3060 | remote_fileio_request (buf); |
3061 | continue; | |
23860348 | 3062 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 JM |
3063 | { |
3064 | int i; | |
d9d9c31f | 3065 | char regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3066 | |
23860348 | 3067 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3068 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3069 | ss = signal number |
3070 | n... = register number | |
3071 | r... = register contents | |
3072 | */ | |
43ff13b4 JM |
3073 | p = &buf[3]; /* after Txx */ |
3074 | ||
3075 | while (*p) | |
3076 | { | |
3077 | unsigned char *p1; | |
3078 | char *p_temp; | |
6c3f2dbf | 3079 | int fieldsize; |
3c3bea1c | 3080 | long pnum = 0; |
43ff13b4 | 3081 | |
23860348 MS |
3082 | /* If the packet contains a register number, save it |
3083 | in pnum and set p1 to point to the character | |
3084 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3085 | |
3086 | /* If this packet is an awatch packet, don't parse the 'a' | |
3087 | as a register number. */ | |
802188a7 | 3088 | |
3c3bea1c GS |
3089 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3090 | { | |
3091 | /* Read the register number. */ | |
3092 | pnum = strtol (p, &p_temp, 16); | |
3093 | p1 = (unsigned char *) p_temp; | |
3094 | } | |
802188a7 | 3095 | else |
3c3bea1c | 3096 | p1 = p; |
43ff13b4 | 3097 | |
23860348 | 3098 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3099 | { |
3c3bea1c | 3100 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 | 3101 | if (p1 == NULL) |
8a3fe4f8 AC |
3102 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3103 | Packet: '%s'\n"), | |
3fcb8548 | 3104 | p, buf); |
3c3bea1c | 3105 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3106 | { |
3107 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3108 | record_currthread (thread_num); | |
3109 | p = (unsigned char *) p_temp; | |
3110 | } | |
3c3bea1c GS |
3111 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3112 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3113 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3114 | { | |
3115 | remote_stopped_by_watchpoint_p = 1; | |
3116 | p = unpack_varlen_hex (++p1, &addr); | |
3117 | remote_watch_data_address = (CORE_ADDR)addr; | |
3118 | } | |
3119 | else | |
3120 | { | |
3121 | /* Silently skip unknown optional info. */ | |
3122 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3123 | if (p_temp) | |
3124 | p = p_temp; | |
3125 | } | |
43ff13b4 | 3126 | } |
802188a7 | 3127 | |
43ff13b4 JM |
3128 | else |
3129 | { | |
ad10f812 | 3130 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3131 | p = p1; |
43ff13b4 | 3132 | if (*p++ != ':') |
8a3fe4f8 AC |
3133 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3134 | Packet: '%s'\n"), | |
3fcb8548 | 3135 | p, buf); |
43ff13b4 | 3136 | |
ad10f812 | 3137 | if (reg == NULL) |
8a3fe4f8 AC |
3138 | error (_("Remote sent bad register number %ld: %s\n\ |
3139 | Packet: '%s'\n"), | |
3fcb8548 | 3140 | pnum, p, buf); |
43ff13b4 | 3141 | |
23860348 MS |
3142 | fieldsize = hex2bin (p, regs, |
3143 | register_size (current_gdbarch, | |
3144 | reg->regnum)); | |
6c3f2dbf | 3145 | p += 2 * fieldsize; |
23860348 MS |
3146 | if (fieldsize < register_size (current_gdbarch, |
3147 | reg->regnum)) | |
8a3fe4f8 | 3148 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 3149 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3150 | } |
3151 | ||
3152 | if (*p++ != ';') | |
8a3fe4f8 | 3153 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3154 | buf, p); |
43ff13b4 JM |
3155 | } |
3156 | } | |
3157 | /* fall through */ | |
23860348 | 3158 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3159 | status->kind = TARGET_WAITKIND_STOPPED; |
3160 | status->value.sig = (enum target_signal) | |
3161 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3162 | ||
3163 | if (buf[3] == 'p') | |
3164 | { | |
43ff13b4 JM |
3165 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3166 | record_currthread (thread_num); | |
3167 | } | |
43ff13b4 | 3168 | goto got_status; |
23860348 | 3169 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3170 | { |
3171 | /* The remote process exited. */ | |
3172 | status->kind = TARGET_WAITKIND_EXITED; | |
3173 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3174 | goto got_status; | |
3175 | } | |
3176 | case 'X': | |
3177 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3178 | status->value.sig = (enum target_signal) | |
3179 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3180 | kill_kludge = 1; | |
3181 | ||
3182 | goto got_status; | |
23860348 | 3183 | case 'O': /* Console output. */ |
43ff13b4 | 3184 | remote_console_output (buf + 1); |
c4093a6a | 3185 | /* Return immediately to the event loop. The event loop will |
23860348 | 3186 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3187 | status->kind = TARGET_WAITKIND_IGNORE; |
3188 | goto got_status; | |
43ff13b4 JM |
3189 | case '\0': |
3190 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3191 | { | |
3192 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3193 | the remote system doesn't support it. */ |
43ff13b4 JM |
3194 | target_terminal_ours_for_output (); |
3195 | printf_filtered | |
3196 | ("Can't send signals to this remote system. %s not sent.\n", | |
3197 | target_signal_to_name (last_sent_signal)); | |
3198 | last_sent_signal = TARGET_SIGNAL_0; | |
3199 | target_terminal_inferior (); | |
3200 | ||
3201 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3202 | putpkt ((char *) buf); | |
3203 | continue; | |
3204 | } | |
3205 | /* else fallthrough */ | |
3206 | default: | |
8a3fe4f8 | 3207 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3208 | continue; |
3209 | } | |
3210 | } | |
c5aa993b | 3211 | got_status: |
43ff13b4 JM |
3212 | if (thread_num != -1) |
3213 | { | |
39f77062 | 3214 | return pid_to_ptid (thread_num); |
43ff13b4 | 3215 | } |
39f77062 | 3216 | return inferior_ptid; |
43ff13b4 JM |
3217 | } |
3218 | ||
c906108c SS |
3219 | /* Number of bytes of registers this stub implements. */ |
3220 | ||
3221 | static int register_bytes_found; | |
3222 | ||
3223 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3224 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3225 | |
b96ec7ac AC |
3226 | static int |
3227 | fetch_register_using_p (int regnum) | |
3228 | { | |
3229 | struct remote_state *rs = get_remote_state (); | |
3230 | char *buf = alloca (rs->remote_packet_size), *p; | |
3231 | char regp[MAX_REGISTER_SIZE]; | |
3232 | int i; | |
3233 | ||
fcad0fa4 JB |
3234 | p = buf; |
3235 | *p++ = 'p'; | |
3236 | p += hexnumstr (p, regnum); | |
3237 | *p++ = '\0'; | |
b96ec7ac | 3238 | remote_send (buf, rs->remote_packet_size); |
3f9a994c JB |
3239 | |
3240 | /* If the stub didn't recognize the packet, or if we got an error, | |
3241 | tell our caller. */ | |
3242 | if (buf[0] == '\0' || buf[0] == 'E') | |
3243 | return 0; | |
3244 | ||
3245 | /* If this register is unfetchable, tell the regcache. */ | |
3246 | if (buf[0] == 'x') | |
8480adf2 | 3247 | { |
3f9a994c JB |
3248 | regcache_raw_supply (current_regcache, regnum, NULL); |
3249 | set_register_cached (regnum, -1); | |
8480adf2 | 3250 | return 1; |
b96ec7ac | 3251 | } |
b96ec7ac | 3252 | |
3f9a994c JB |
3253 | /* Otherwise, parse and supply the value. */ |
3254 | p = buf; | |
3255 | i = 0; | |
3256 | while (p[0] != 0) | |
3257 | { | |
3258 | if (p[1] == 0) | |
3259 | { | |
8a3fe4f8 | 3260 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3261 | return 0; |
3262 | } | |
3263 | ||
3264 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3265 | p += 2; | |
3266 | } | |
3267 | regcache_raw_supply (current_regcache, regnum, regp); | |
3268 | return 1; | |
b96ec7ac AC |
3269 | } |
3270 | ||
c906108c | 3271 | static void |
ad10f812 | 3272 | remote_fetch_registers (int regnum) |
c906108c | 3273 | { |
d01949b6 AC |
3274 | struct remote_state *rs = get_remote_state (); |
3275 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3276 | int i; |
3277 | char *p; | |
ad10f812 | 3278 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3279 | |
39f77062 | 3280 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3281 | |
b323314b AC |
3282 | if (regnum >= 0) |
3283 | { | |
3284 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3285 | gdb_assert (reg != NULL); | |
3286 | if (!reg->in_g_packet) | |
3287 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3288 | _("Attempt to fetch a non G-packet register when this " |
3289 | "remote.c does not support the p-packet.")); | |
b323314b | 3290 | } |
b96ec7ac AC |
3291 | switch (remote_protocol_p.support) |
3292 | { | |
3293 | case PACKET_DISABLE: | |
3294 | break; | |
3295 | case PACKET_ENABLE: | |
3296 | if (fetch_register_using_p (regnum)) | |
3297 | return; | |
3298 | else | |
8a3fe4f8 | 3299 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3300 | case PACKET_SUPPORT_UNKNOWN: |
3301 | if (fetch_register_using_p (regnum)) | |
3302 | { | |
3303 | /* The stub recognized the 'p' packet. Remember this. */ | |
3304 | remote_protocol_p.support = PACKET_ENABLE; | |
3305 | return; | |
3306 | } | |
3307 | else | |
3308 | { | |
3309 | /* The stub does not support the 'P' packet. Use 'G' | |
3310 | instead, and don't try using 'P' in the future (it | |
3311 | will just waste our time). */ | |
3312 | remote_protocol_p.support = PACKET_DISABLE; | |
3313 | break; | |
3314 | } | |
3315 | } | |
b323314b | 3316 | |
c906108c | 3317 | sprintf (buf, "g"); |
d01949b6 | 3318 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3319 | |
11cf8741 JM |
3320 | /* Save the size of the packet sent to us by the target. Its used |
3321 | as a heuristic when determining the max size of packets that the | |
23860348 | 3322 | target can safely receive. */ |
d01949b6 AC |
3323 | if ((rs->actual_register_packet_size) == 0) |
3324 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3325 | |
3326 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3327 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3328 | |
3329 | /* We can get out of synch in various cases. If the first character | |
3330 | in the buffer is not a hex character, assume that has happened | |
3331 | and try to fetch another packet to read. */ | |
3332 | while ((buf[0] < '0' || buf[0] > '9') | |
3333 | && (buf[0] < 'a' || buf[0] > 'f') | |
23860348 | 3334 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3335 | { |
3336 | if (remote_debug) | |
0f71a2f6 JM |
3337 | fprintf_unfiltered (gdb_stdlog, |
3338 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3339 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3340 | } |
3341 | ||
3342 | /* Reply describes registers byte by byte, each byte encoded as two | |
3343 | hex characters. Suck them all up, then supply them to the | |
3344 | register cacheing/storage mechanism. */ | |
3345 | ||
3346 | p = buf; | |
ad10f812 | 3347 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3348 | { |
3349 | if (p[0] == 0) | |
3350 | break; | |
3351 | if (p[1] == 0) | |
3352 | { | |
8a3fe4f8 | 3353 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3354 | /* Don't change register_bytes_found in this case, and don't |
3355 | print a second warning. */ | |
3356 | goto supply_them; | |
3357 | } | |
3358 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3359 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3360 | else |
3361 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3362 | p += 2; | |
3363 | } | |
3364 | ||
3365 | if (i != register_bytes_found) | |
3366 | { | |
3367 | register_bytes_found = i; | |
2649061d AC |
3368 | if (REGISTER_BYTES_OK_P () |
3369 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3370 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3371 | } |
c5aa993b | 3372 | |
b323314b | 3373 | supply_them: |
ad10f812 | 3374 | { |
b323314b AC |
3375 | int i; |
3376 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3377 | { |
b323314b AC |
3378 | struct packet_reg *r = &rs->regs[i]; |
3379 | if (r->in_g_packet) | |
3380 | { | |
8ccc1287 AC |
3381 | if (r->offset * 2 >= strlen (buf)) |
3382 | /* A short packet that didn't include the register's | |
3383 | value, this implies that the register is zero (and | |
3384 | not that the register is unavailable). Supply that | |
3385 | zero value. */ | |
3386 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3387 | else if (buf[r->offset * 2] == 'x') | |
3388 | { | |
3389 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3390 | /* The register isn't available, mark it as such (at | |
3391 | the same time setting the value to zero). */ | |
3392 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3393 | set_register_cached (i, -1); | |
3394 | } | |
3395 | else | |
3396 | regcache_raw_supply (current_regcache, r->regnum, | |
3397 | regs + r->offset); | |
b323314b | 3398 | } |
ad10f812 AC |
3399 | } |
3400 | } | |
c906108c SS |
3401 | } |
3402 | ||
3403 | /* Prepare to store registers. Since we may send them all (using a | |
3404 | 'G' request), we have to read out the ones we don't want to change | |
3405 | first. */ | |
3406 | ||
c5aa993b | 3407 | static void |
fba45db2 | 3408 | remote_prepare_to_store (void) |
c906108c | 3409 | { |
cf0e1e0d DJ |
3410 | struct remote_state *rs = get_remote_state (); |
3411 | int i; | |
3412 | char buf[MAX_REGISTER_SIZE]; | |
3413 | ||
c906108c | 3414 | /* Make sure the entire registers array is valid. */ |
5a2468f5 JM |
3415 | switch (remote_protocol_P.support) |
3416 | { | |
3417 | case PACKET_DISABLE: | |
3418 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3419 | /* Make sure all the necessary registers are cached. */ |
3420 | for (i = 0; i < NUM_REGS; i++) | |
3421 | if (rs->regs[i].in_g_packet) | |
3422 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3423 | break; |
3424 | case PACKET_ENABLE: | |
3425 | break; | |
3426 | } | |
3427 | } | |
3428 | ||
ad10f812 | 3429 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3430 | packet was not recognized. */ |
5a2468f5 JM |
3431 | |
3432 | static int | |
ad10f812 | 3433 | store_register_using_P (int regnum) |
5a2468f5 | 3434 | { |
d01949b6 | 3435 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3436 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3437 | /* Try storing a single register. */ |
d01949b6 | 3438 | char *buf = alloca (rs->remote_packet_size); |
d9d9c31f | 3439 | char regp[MAX_REGISTER_SIZE]; |
5a2468f5 JM |
3440 | char *p; |
3441 | int i; | |
3442 | ||
ad10f812 | 3443 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3444 | p = buf + strlen (buf); |
822c9732 | 3445 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3446 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
ad10f812 | 3447 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3448 | |
3449 | return buf[0] != '\0'; | |
c906108c SS |
3450 | } |
3451 | ||
5a2468f5 | 3452 | |
23860348 MS |
3453 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3454 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3455 | |
3456 | static void | |
ad10f812 | 3457 | remote_store_registers (int regnum) |
c906108c | 3458 | { |
d01949b6 | 3459 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3460 | char *buf; |
3461 | char *regs; | |
c906108c SS |
3462 | int i; |
3463 | char *p; | |
3464 | ||
39f77062 | 3465 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3466 | |
ad10f812 | 3467 | if (regnum >= 0) |
c906108c | 3468 | { |
5a2468f5 | 3469 | switch (remote_protocol_P.support) |
c906108c | 3470 | { |
5a2468f5 JM |
3471 | case PACKET_DISABLE: |
3472 | break; | |
3473 | case PACKET_ENABLE: | |
ad10f812 | 3474 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3475 | return; |
3476 | else | |
8a3fe4f8 | 3477 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3478 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3479 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3480 | { |
3481 | /* The stub recognized the 'P' packet. Remember this. */ | |
3482 | remote_protocol_P.support = PACKET_ENABLE; | |
3483 | return; | |
3484 | } | |
3485 | else | |
3486 | { | |
3487 | /* The stub does not support the 'P' packet. Use 'G' | |
3488 | instead, and don't try using 'P' in the future (it | |
3489 | will just waste our time). */ | |
3490 | remote_protocol_P.support = PACKET_DISABLE; | |
3491 | break; | |
3492 | } | |
c906108c | 3493 | } |
c906108c SS |
3494 | } |
3495 | ||
193cb69f AC |
3496 | /* Extract all the registers in the regcache copying them into a |
3497 | local buffer. */ | |
3498 | { | |
b323314b | 3499 | int i; |
ad10f812 AC |
3500 | regs = alloca (rs->sizeof_g_packet); |
3501 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3502 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3503 | { |
b323314b AC |
3504 | struct packet_reg *r = &rs->regs[i]; |
3505 | if (r->in_g_packet) | |
822c9732 | 3506 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3507 | } |
3508 | } | |
c906108c SS |
3509 | |
3510 | /* Command describes registers byte by byte, | |
3511 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3512 | buf = alloca (rs->remote_packet_size); |
3513 | p = buf; | |
3514 | *p++ = 'G'; | |
c906108c | 3515 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3516 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3517 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3518 | } |
c906108c SS |
3519 | \f |
3520 | ||
3521 | /* Return the number of hex digits in num. */ | |
3522 | ||
3523 | static int | |
fba45db2 | 3524 | hexnumlen (ULONGEST num) |
c906108c SS |
3525 | { |
3526 | int i; | |
3527 | ||
3528 | for (i = 0; num != 0; i++) | |
3529 | num >>= 4; | |
3530 | ||
3531 | return max (i, 1); | |
3532 | } | |
3533 | ||
2df3850c | 3534 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3535 | |
3536 | static int | |
fba45db2 | 3537 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3538 | { |
c906108c | 3539 | int len = hexnumlen (num); |
2df3850c JM |
3540 | return hexnumnstr (buf, num, len); |
3541 | } | |
3542 | ||
c906108c | 3543 | |
2df3850c | 3544 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3545 | |
2df3850c | 3546 | static int |
fba45db2 | 3547 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3548 | { |
3549 | int i; | |
3550 | ||
3551 | buf[width] = '\0'; | |
3552 | ||
3553 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3554 | { |
c5aa993b | 3555 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3556 | num >>= 4; |
3557 | } | |
3558 | ||
2df3850c | 3559 | return width; |
c906108c SS |
3560 | } |
3561 | ||
23860348 | 3562 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3563 | |
3564 | static CORE_ADDR | |
fba45db2 | 3565 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3566 | { |
3567 | if (remote_address_size > 0 | |
3568 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3569 | { | |
3570 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3571 | in a ULONGEST variable. */ |
c906108c SS |
3572 | ULONGEST mask = 1; |
3573 | mask = (mask << remote_address_size) - 1; | |
3574 | addr &= mask; | |
3575 | } | |
3576 | return addr; | |
3577 | } | |
3578 | ||
3579 | /* Determine whether the remote target supports binary downloading. | |
3580 | This is accomplished by sending a no-op memory write of zero length | |
3581 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3582 | the whole packet, since many stubs strip the eighth bit and |
3583 | subsequently compute a wrong checksum, which causes real havoc with | |
3584 | remote_write_bytes. | |
7a292a7a | 3585 | |
96baa820 JM |
3586 | NOTE: This can still lose if the serial line is not eight-bit |
3587 | clean. In cases like this, the user should clear "remote | |
23860348 | 3588 | X-packet". */ |
96baa820 | 3589 | |
c906108c | 3590 | static void |
fba45db2 | 3591 | check_binary_download (CORE_ADDR addr) |
c906108c | 3592 | { |
d01949b6 | 3593 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3594 | switch (remote_protocol_binary_download.support) |
c906108c | 3595 | { |
96baa820 JM |
3596 | case PACKET_DISABLE: |
3597 | break; | |
3598 | case PACKET_ENABLE: | |
3599 | break; | |
3600 | case PACKET_SUPPORT_UNKNOWN: | |
3601 | { | |
d01949b6 | 3602 | char *buf = alloca (rs->remote_packet_size); |
96baa820 | 3603 | char *p; |
802188a7 | 3604 | |
96baa820 JM |
3605 | p = buf; |
3606 | *p++ = 'X'; | |
3607 | p += hexnumstr (p, (ULONGEST) addr); | |
3608 | *p++ = ','; | |
3609 | p += hexnumstr (p, (ULONGEST) 0); | |
3610 | *p++ = ':'; | |
3611 | *p = '\0'; | |
802188a7 | 3612 | |
96baa820 | 3613 | putpkt_binary (buf, (int) (p - buf)); |
d01949b6 | 3614 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3615 | |
96baa820 JM |
3616 | if (buf[0] == '\0') |
3617 | { | |
3618 | if (remote_debug) | |
3619 | fprintf_unfiltered (gdb_stdlog, | |
3620 | "binary downloading NOT suppported by target\n"); | |
3621 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3622 | } | |
3623 | else | |
3624 | { | |
3625 | if (remote_debug) | |
3626 | fprintf_unfiltered (gdb_stdlog, | |
3627 | "binary downloading suppported by target\n"); | |
3628 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3629 | } | |
3630 | break; | |
3631 | } | |
c906108c SS |
3632 | } |
3633 | } | |
3634 | ||
3635 | /* Write memory data directly to the remote machine. | |
3636 | This does not inform the data cache; the data cache uses this. | |
3637 | MEMADDR is the address in the remote memory space. | |
3638 | MYADDR is the address of the buffer in our space. | |
3639 | LEN is the number of bytes. | |
3640 | ||
917317f4 | 3641 | Returns number of bytes transferred, or 0 (setting errno) for |
23860348 | 3642 | error. Only transfer a single packet. */ |
c906108c | 3643 | |
449092f6 | 3644 | int |
917317f4 | 3645 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3646 | { |
917317f4 | 3647 | unsigned char *buf; |
917317f4 JM |
3648 | unsigned char *p; |
3649 | unsigned char *plen; | |
c2d11a7d | 3650 | long sizeof_buf; |
917317f4 JM |
3651 | int plenlen; |
3652 | int todo; | |
3653 | int nr_bytes; | |
a257b5bb AC |
3654 | int payload_size; |
3655 | unsigned char *payload_start; | |
c906108c | 3656 | |
a257b5bb | 3657 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3658 | check_binary_download (memaddr); |
3659 | ||
a257b5bb | 3660 | /* Compute the size, and then allocate space for the largest |
23860348 | 3661 | possible packet. Include space for an extra trailing NULL. */ |
a257b5bb | 3662 | sizeof_buf = get_memory_write_packet_size () + 1; |
c2d11a7d | 3663 | buf = alloca (sizeof_buf); |
c906108c | 3664 | |
a257b5bb AC |
3665 | /* Compute the size of the actual payload by subtracting out the |
3666 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ | |
3667 | payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN") | |
3668 | + hexnumlen (memaddr) | |
3669 | + hexnumlen (len))); | |
c906108c | 3670 | |
a257b5bb | 3671 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3672 | |
a257b5bb | 3673 | /* Append "[XM]". Compute a best guess of the number of bytes |
23860348 | 3674 | actually transfered. */ |
a257b5bb | 3675 | p = buf; |
917317f4 | 3676 | switch (remote_protocol_binary_download.support) |
c906108c | 3677 | { |
917317f4 JM |
3678 | case PACKET_ENABLE: |
3679 | *p++ = 'X'; | |
23860348 | 3680 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3681 | todo = min (len, payload_size); |
917317f4 JM |
3682 | break; |
3683 | case PACKET_DISABLE: | |
3684 | *p++ = 'M'; | |
23860348 | 3685 | /* Num bytes that will fit. */ |
a257b5bb | 3686 | todo = min (len, payload_size / 2); |
917317f4 JM |
3687 | break; |
3688 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3689 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3690 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3691 | default: |
e2e0b3e5 | 3692 | internal_error (__FILE__, __LINE__, _("bad switch")); |
917317f4 | 3693 | } |
802188a7 | 3694 | |
a257b5bb | 3695 | /* Append "<memaddr>". */ |
917317f4 JM |
3696 | memaddr = remote_address_masked (memaddr); |
3697 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3698 | |
3699 | /* Append ",". */ | |
917317f4 | 3700 | *p++ = ','; |
802188a7 | 3701 | |
a257b5bb AC |
3702 | /* Append <len>. Retain the location/size of <len>. It may need to |
3703 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3704 | plen = p; |
3705 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3706 | p += plenlen; | |
a257b5bb AC |
3707 | |
3708 | /* Append ":". */ | |
917317f4 JM |
3709 | *p++ = ':'; |
3710 | *p = '\0'; | |
802188a7 | 3711 | |
a257b5bb AC |
3712 | /* Append the packet body. */ |
3713 | payload_start = p; | |
917317f4 JM |
3714 | switch (remote_protocol_binary_download.support) |
3715 | { | |
3716 | case PACKET_ENABLE: | |
3717 | /* Binary mode. Send target system values byte by byte, in | |
3718 | increasing byte addresses. Only escape certain critical | |
3719 | characters. */ | |
3720 | for (nr_bytes = 0; | |
a257b5bb | 3721 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3722 | nr_bytes++) |
c906108c | 3723 | { |
917317f4 JM |
3724 | switch (myaddr[nr_bytes] & 0xff) |
3725 | { | |
3726 | case '$': | |
3727 | case '#': | |
3728 | case 0x7d: | |
23860348 | 3729 | /* These must be escaped. */ |
917317f4 JM |
3730 | *p++ = 0x7d; |
3731 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3732 | break; | |
3733 | default: | |
3734 | *p++ = myaddr[nr_bytes] & 0xff; | |
3735 | break; | |
3736 | } | |
c906108c | 3737 | } |
917317f4 | 3738 | if (nr_bytes < todo) |
c906108c | 3739 | { |
802188a7 | 3740 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3741 | and we have actually sent fewer bytes than planned. |
3742 | Fix-up the length field of the packet. Use the same | |
3743 | number of characters as before. */ | |
917317f4 JM |
3744 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3745 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3746 | } |
917317f4 JM |
3747 | break; |
3748 | case PACKET_DISABLE: | |
3749 | /* Normal mode: Send target system values byte by byte, in | |
3750 | increasing byte addresses. Each byte is encoded as a two hex | |
3751 | value. */ | |
2644f393 | 3752 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3753 | p += 2 * nr_bytes; |
917317f4 JM |
3754 | break; |
3755 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3756 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3757 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3758 | default: |
e2e0b3e5 | 3759 | internal_error (__FILE__, __LINE__, _("bad switch")); |
c906108c | 3760 | } |
802188a7 | 3761 | |
917317f4 | 3762 | putpkt_binary (buf, (int) (p - buf)); |
c2d11a7d | 3763 | getpkt (buf, sizeof_buf, 0); |
802188a7 | 3764 | |
917317f4 JM |
3765 | if (buf[0] == 'E') |
3766 | { | |
3767 | /* There is no correspondance between what the remote protocol | |
3768 | uses for errors and errno codes. We would like a cleaner way | |
3769 | of representing errors (big enough to include errno codes, | |
3770 | bfd_error codes, and others). But for now just return EIO. */ | |
3771 | errno = EIO; | |
3772 | return 0; | |
3773 | } | |
802188a7 | 3774 | |
23860348 MS |
3775 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
3776 | fewer bytes than we'd planned. */ | |
917317f4 | 3777 | return nr_bytes; |
c906108c SS |
3778 | } |
3779 | ||
3780 | /* Read memory data directly from the remote machine. | |
3781 | This does not use the data cache; the data cache uses this. | |
3782 | MEMADDR is the address in the remote memory space. | |
3783 | MYADDR is the address of the buffer in our space. | |
3784 | LEN is the number of bytes. | |
3785 | ||
3786 | Returns number of bytes transferred, or 0 for error. */ | |
3787 | ||
917317f4 JM |
3788 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3789 | remote targets) shouldn't attempt to read the entire buffer. | |
3790 | Instead it should read a single packet worth of data and then | |
3791 | return the byte size of that packet to the caller. The caller (its | |
3792 | caller and its callers caller ;-) already contains code for | |
23860348 | 3793 | handling partial reads. */ |
917317f4 | 3794 | |
449092f6 | 3795 | int |
fba45db2 | 3796 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3797 | { |
11cf8741 | 3798 | char *buf; |
23860348 | 3799 | int max_buf_size; /* Max size of packet output buffer. */ |
c2d11a7d | 3800 | long sizeof_buf; |
c906108c SS |
3801 | int origlen; |
3802 | ||
23860348 | 3803 | /* Create a buffer big enough for this packet. */ |
11cf8741 | 3804 | max_buf_size = get_memory_read_packet_size (); |
23860348 | 3805 | sizeof_buf = max_buf_size + 1; /* Space for trailing NULL. */ |
c2d11a7d | 3806 | buf = alloca (sizeof_buf); |
c906108c SS |
3807 | |
3808 | origlen = len; | |
3809 | while (len > 0) | |
3810 | { | |
c906108c SS |
3811 | char *p; |
3812 | int todo; | |
3813 | int i; | |
3814 | ||
c5aa993b | 3815 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3816 | |
3817 | /* construct "m"<memaddr>","<len>" */ | |
3818 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3819 | memaddr = remote_address_masked (memaddr); | |
3820 | p = buf; | |
3821 | *p++ = 'm'; | |
3822 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3823 | *p++ = ','; | |
3824 | p += hexnumstr (p, (ULONGEST) todo); | |
3825 | *p = '\0'; | |
3826 | ||
3827 | putpkt (buf); | |
c2d11a7d | 3828 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3829 | |
66504d44 MS |
3830 | if (buf[0] == 'E' |
3831 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3832 | && buf[3] == '\0') | |
c906108c | 3833 | { |
23860348 MS |
3834 | /* There is no correspondance between what the remote |
3835 | protocol uses for errors and errno codes. We would like | |
3836 | a cleaner way of representing errors (big enough to | |
3837 | include errno codes, bfd_error codes, and others). But | |
3838 | for now just return EIO. */ | |
c906108c SS |
3839 | errno = EIO; |
3840 | return 0; | |
3841 | } | |
3842 | ||
c5aa993b JM |
3843 | /* Reply describes memory byte by byte, |
3844 | each byte encoded as two hex characters. */ | |
c906108c SS |
3845 | |
3846 | p = buf; | |
30559e10 | 3847 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3848 | { |
30559e10 | 3849 | /* Reply is short. This means that we were able to read |
23860348 | 3850 | only part of what we wanted to. */ |
30559e10 | 3851 | return i + (origlen - len); |
c906108c SS |
3852 | } |
3853 | myaddr += todo; | |
3854 | memaddr += todo; | |
3855 | len -= todo; | |
3856 | } | |
3857 | return origlen; | |
3858 | } | |
3859 | \f | |
3860 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
3861 | transferring to or from debugger address BUFFER. Write to inferior |
3862 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
3863 | read; 0 for error. TARGET is unused. */ | |
392a587b | 3864 | |
c906108c | 3865 | static int |
c338868a | 3866 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 3867 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3868 | struct target_ops *target) |
c906108c | 3869 | { |
392a587b JM |
3870 | CORE_ADDR targ_addr; |
3871 | int targ_len; | |
4930751a C |
3872 | int res; |
3873 | ||
f6684c31 | 3874 | /* Should this be the selected frame? */ |
23860348 MS |
3875 | gdbarch_remote_translate_xfer_address (current_gdbarch, |
3876 | current_regcache, | |
f6684c31 AC |
3877 | mem_addr, mem_len, |
3878 | &targ_addr, &targ_len); | |
392a587b | 3879 | if (targ_len <= 0) |
c906108c | 3880 | return 0; |
c906108c | 3881 | |
4930751a C |
3882 | if (should_write) |
3883 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3884 | else | |
3885 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3886 | ||
3887 | return res; | |
c906108c SS |
3888 | } |
3889 | ||
c906108c | 3890 | static void |
fba45db2 | 3891 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3892 | { |
3893 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3894 | } | |
3895 | \f | |
3896 | /* Stuff for dealing with the packets which are part of this protocol. | |
3897 | See comment at top of file for details. */ | |
3898 | ||
23860348 MS |
3899 | /* Read a single character from the remote end, masking it down to 7 |
3900 | bits. */ | |
c906108c SS |
3901 | |
3902 | static int | |
fba45db2 | 3903 | readchar (int timeout) |
c906108c SS |
3904 | { |
3905 | int ch; | |
3906 | ||
2cd58942 | 3907 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3908 | |
2acceee2 JM |
3909 | if (ch >= 0) |
3910 | return (ch & 0x7f); | |
3911 | ||
3912 | switch ((enum serial_rc) ch) | |
c906108c SS |
3913 | { |
3914 | case SERIAL_EOF: | |
2acceee2 | 3915 | target_mourn_inferior (); |
8a3fe4f8 | 3916 | error (_("Remote connection closed")); |
2acceee2 | 3917 | /* no return */ |
c906108c | 3918 | case SERIAL_ERROR: |
e2e0b3e5 | 3919 | perror_with_name (_("Remote communication error")); |
2acceee2 | 3920 | /* no return */ |
c906108c | 3921 | case SERIAL_TIMEOUT: |
2acceee2 | 3922 | break; |
c906108c | 3923 | } |
2acceee2 | 3924 | return ch; |
c906108c SS |
3925 | } |
3926 | ||
3927 | /* Send the command in BUF to the remote machine, and read the reply | |
3928 | into BUF. Report an error if we get an error reply. */ | |
3929 | ||
3930 | static void | |
c2d11a7d JM |
3931 | remote_send (char *buf, |
3932 | long sizeof_buf) | |
c906108c SS |
3933 | { |
3934 | putpkt (buf); | |
c2d11a7d | 3935 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3936 | |
3937 | if (buf[0] == 'E') | |
8a3fe4f8 | 3938 | error (_("Remote failure reply: %s"), buf); |
c906108c SS |
3939 | } |
3940 | ||
3941 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3942 | string notation. */ | |
3943 | ||
3944 | static void | |
fba45db2 | 3945 | print_packet (char *buf) |
c906108c SS |
3946 | { |
3947 | puts_filtered ("\""); | |
43e526b9 | 3948 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3949 | puts_filtered ("\""); |
3950 | } | |
3951 | ||
3952 | int | |
fba45db2 | 3953 | putpkt (char *buf) |
c906108c SS |
3954 | { |
3955 | return putpkt_binary (buf, strlen (buf)); | |
3956 | } | |
3957 | ||
3958 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 MS |
3959 | of the packet is in BUF. The string in BUF can be at most |
3960 | (rs->remote_packet_size) - 5 to account for the $, # and checksum, | |
3961 | and for a possible /0 if we are debugging (remote_debug) and want | |
3962 | to print the sent packet as a string. */ | |
c906108c SS |
3963 | |
3964 | static int | |
fba45db2 | 3965 | putpkt_binary (char *buf, int cnt) |
c906108c | 3966 | { |
d01949b6 | 3967 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3968 | int i; |
3969 | unsigned char csum = 0; | |
11cf8741 | 3970 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 3971 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 3972 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 3973 | |
c906108c SS |
3974 | int ch; |
3975 | int tcount = 0; | |
3976 | char *p; | |
3977 | ||
3978 | /* Copy the packet into buffer BUF2, encapsulating it | |
3979 | and giving it a checksum. */ | |
3980 | ||
c906108c SS |
3981 | p = buf2; |
3982 | *p++ = '$'; | |
3983 | ||
3984 | for (i = 0; i < cnt; i++) | |
3985 | { | |
3986 | csum += buf[i]; | |
3987 | *p++ = buf[i]; | |
3988 | } | |
3989 | *p++ = '#'; | |
3990 | *p++ = tohex ((csum >> 4) & 0xf); | |
3991 | *p++ = tohex (csum & 0xf); | |
3992 | ||
3993 | /* Send it over and over until we get a positive ack. */ | |
3994 | ||
3995 | while (1) | |
3996 | { | |
3997 | int started_error_output = 0; | |
3998 | ||
3999 | if (remote_debug) | |
4000 | { | |
4001 | *p = '\0'; | |
43e526b9 JM |
4002 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4003 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4004 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4005 | gdb_flush (gdb_stdlog); |
c906108c | 4006 | } |
2cd58942 | 4007 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4008 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4009 | |
23860348 | 4010 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4011 | while (1) |
4012 | { | |
4013 | ch = readchar (remote_timeout); | |
4014 | ||
c5aa993b | 4015 | if (remote_debug) |
c906108c SS |
4016 | { |
4017 | switch (ch) | |
4018 | { | |
4019 | case '+': | |
1216fa2c | 4020 | case '-': |
c906108c SS |
4021 | case SERIAL_TIMEOUT: |
4022 | case '$': | |
4023 | if (started_error_output) | |
4024 | { | |
4025 | putchar_unfiltered ('\n'); | |
4026 | started_error_output = 0; | |
4027 | } | |
4028 | } | |
4029 | } | |
4030 | ||
4031 | switch (ch) | |
4032 | { | |
4033 | case '+': | |
4034 | if (remote_debug) | |
0f71a2f6 | 4035 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4036 | return 1; |
1216fa2c AC |
4037 | case '-': |
4038 | if (remote_debug) | |
4039 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4040 | case SERIAL_TIMEOUT: |
c5aa993b | 4041 | tcount++; |
c906108c SS |
4042 | if (tcount > 3) |
4043 | return 0; | |
23860348 | 4044 | break; /* Retransmit buffer. */ |
c906108c SS |
4045 | case '$': |
4046 | { | |
40e3f985 | 4047 | if (remote_debug) |
23860348 MS |
4048 | fprintf_unfiltered (gdb_stdlog, |
4049 | "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
4050 | /* It's probably an old response sent because an ACK |
4051 | was lost. Gobble up the packet and ack it so it | |
4052 | doesn't get retransmitted when we resend this | |
4053 | packet. */ | |
40e3f985 | 4054 | read_frame (junkbuf, sizeof_junkbuf); |
d6f7abdf | 4055 | serial_write (remote_desc, "+", 1); |
23860348 | 4056 | continue; /* Now, go look for +. */ |
c906108c SS |
4057 | } |
4058 | default: | |
4059 | if (remote_debug) | |
4060 | { | |
4061 | if (!started_error_output) | |
4062 | { | |
4063 | started_error_output = 1; | |
0f71a2f6 | 4064 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4065 | } |
0f71a2f6 | 4066 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4067 | } |
4068 | continue; | |
4069 | } | |
23860348 | 4070 | break; /* Here to retransmit. */ |
c906108c SS |
4071 | } |
4072 | ||
4073 | #if 0 | |
4074 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4075 | able to get out next time we call QUIT, without anything as |
4076 | violent as interrupt_query. If we want to provide a way out of | |
4077 | here without getting to the next QUIT, it should be based on | |
4078 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4079 | if (quit_flag) |
4080 | { | |
4081 | quit_flag = 0; | |
4082 | interrupt_query (); | |
4083 | } | |
4084 | #endif | |
4085 | } | |
4086 | } | |
4087 | ||
4088 | /* Come here after finding the start of the frame. Collect the rest | |
4089 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4090 | compression. No more than sizeof_buf-1 characters are read so that |
4091 | the buffer can be NUL terminated. | |
c906108c | 4092 | |
c2d11a7d JM |
4093 | Returns -1 on error, number of characters in buffer (ignoring the |
4094 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4095 | SERIAL status indications). */ |
c2d11a7d JM |
4096 | |
4097 | static long | |
4098 | read_frame (char *buf, | |
4099 | long sizeof_buf) | |
c906108c SS |
4100 | { |
4101 | unsigned char csum; | |
c2d11a7d | 4102 | long bc; |
c906108c SS |
4103 | int c; |
4104 | ||
4105 | csum = 0; | |
c2d11a7d | 4106 | bc = 0; |
c906108c SS |
4107 | |
4108 | while (1) | |
4109 | { | |
23860348 | 4110 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NULL. */ |
c906108c | 4111 | c = readchar (remote_timeout); |
c906108c SS |
4112 | switch (c) |
4113 | { | |
4114 | case SERIAL_TIMEOUT: | |
4115 | if (remote_debug) | |
0f71a2f6 | 4116 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4117 | return -1; |
c906108c SS |
4118 | case '$': |
4119 | if (remote_debug) | |
0f71a2f6 JM |
4120 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4121 | gdb_stdlog); | |
23860348 | 4122 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4123 | case '#': |
4124 | { | |
4125 | unsigned char pktcsum; | |
e1b09194 AC |
4126 | int check_0 = 0; |
4127 | int check_1 = 0; | |
c906108c | 4128 | |
c2d11a7d | 4129 | buf[bc] = '\0'; |
c906108c | 4130 | |
e1b09194 AC |
4131 | check_0 = readchar (remote_timeout); |
4132 | if (check_0 >= 0) | |
4133 | check_1 = readchar (remote_timeout); | |
802188a7 | 4134 | |
e1b09194 AC |
4135 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4136 | { | |
4137 | if (remote_debug) | |
23860348 MS |
4138 | fputs_filtered ("Timeout in checksum, retrying\n", |
4139 | gdb_stdlog); | |
e1b09194 AC |
4140 | return -1; |
4141 | } | |
4142 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4143 | { |
4144 | if (remote_debug) | |
23860348 MS |
4145 | fputs_filtered ("Communication error in checksum\n", |
4146 | gdb_stdlog); | |
40e3f985 FN |
4147 | return -1; |
4148 | } | |
c906108c | 4149 | |
e1b09194 | 4150 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4151 | if (csum == pktcsum) |
c2d11a7d | 4152 | return bc; |
c906108c | 4153 | |
c5aa993b | 4154 | if (remote_debug) |
c906108c | 4155 | { |
0f71a2f6 | 4156 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4157 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4158 | pktcsum, csum); |
4159 | fputs_filtered (buf, gdb_stdlog); | |
4160 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4161 | } |
c2d11a7d | 4162 | /* Number of characters in buffer ignoring trailing |
23860348 | 4163 | NULL. */ |
c2d11a7d | 4164 | return -1; |
c906108c | 4165 | } |
23860348 | 4166 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4167 | { |
4168 | int repeat; | |
4169 | csum += c; | |
c906108c | 4170 | |
b4501125 AC |
4171 | c = readchar (remote_timeout); |
4172 | csum += c; | |
23860348 | 4173 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4174 | |
23860348 | 4175 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4176 | |
802188a7 | 4177 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4178 | && bc > 0 |
fb6e5c55 | 4179 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4180 | { |
c2d11a7d JM |
4181 | memset (&buf[bc], buf[bc - 1], repeat); |
4182 | bc += repeat; | |
c2c6d25f JM |
4183 | continue; |
4184 | } | |
4185 | ||
c2d11a7d | 4186 | buf[bc] = '\0'; |
a3f17187 | 4187 | printf_filtered (_("Repeat count %d too large for buffer: "), |
23860348 | 4188 | repeat); |
c2c6d25f JM |
4189 | puts_filtered (buf); |
4190 | puts_filtered ("\n"); | |
c2d11a7d | 4191 | return -1; |
c2c6d25f | 4192 | } |
c906108c | 4193 | default: |
c2d11a7d | 4194 | if (bc < sizeof_buf - 1) |
c906108c | 4195 | { |
c2d11a7d | 4196 | buf[bc++] = c; |
c906108c SS |
4197 | csum += c; |
4198 | continue; | |
4199 | } | |
4200 | ||
c2d11a7d | 4201 | buf[bc] = '\0'; |
c906108c SS |
4202 | puts_filtered ("Remote packet too long: "); |
4203 | puts_filtered (buf); | |
4204 | puts_filtered ("\n"); | |
4205 | ||
c2d11a7d | 4206 | return -1; |
c906108c SS |
4207 | } |
4208 | } | |
4209 | } | |
4210 | ||
4211 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4212 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4213 | this is used (in synchronous mode) to wait for a target that is is | |
4214 | executing user code to stop. */ | |
d9fcf2fb JM |
4215 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4216 | don't have to change all the calls to getpkt to deal with the | |
4217 | return value, because at the moment I don't know what the right | |
23860348 | 4218 | thing to do it for those. */ |
c906108c | 4219 | void |
c2d11a7d JM |
4220 | getpkt (char *buf, |
4221 | long sizeof_buf, | |
4222 | int forever) | |
d9fcf2fb JM |
4223 | { |
4224 | int timed_out; | |
4225 | ||
4226 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4227 | } | |
4228 | ||
4229 | ||
4230 | /* Read a packet from the remote machine, with error checking, and | |
4231 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4232 | this is used (in synchronous mode) to wait for a target that is is | |
4233 | executing user code to stop. If FOREVER == 0, this function is | |
4234 | allowed to time out gracefully and return an indication of this to | |
23860348 | 4235 | the caller. */ |
3172dc30 | 4236 | static int |
d9fcf2fb JM |
4237 | getpkt_sane (char *buf, |
4238 | long sizeof_buf, | |
4239 | int forever) | |
c906108c SS |
4240 | { |
4241 | int c; | |
4242 | int tries; | |
4243 | int timeout; | |
4244 | int val; | |
4245 | ||
c5aa993b | 4246 | strcpy (buf, "timeout"); |
c906108c SS |
4247 | |
4248 | if (forever) | |
4249 | { | |
c906108c | 4250 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4251 | } |
4252 | ||
4253 | else | |
4254 | timeout = remote_timeout; | |
4255 | ||
4256 | #define MAX_TRIES 3 | |
4257 | ||
4258 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4259 | { | |
4260 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4261 | continuously, but if it pauses, we'll get a zero from |
4262 | readchar because of timeout. Then we'll count that as a | |
4263 | retry. */ | |
c906108c | 4264 | |
23860348 MS |
4265 | /* Note that we will only wait forever prior to the start of a |
4266 | packet. After that, we expect characters to arrive at a | |
4267 | brisk pace. They should show up within remote_timeout | |
4268 | intervals. */ | |
c906108c SS |
4269 | |
4270 | do | |
4271 | { | |
4272 | c = readchar (timeout); | |
4273 | ||
4274 | if (c == SERIAL_TIMEOUT) | |
4275 | { | |
23860348 | 4276 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4277 | { |
2acceee2 | 4278 | QUIT; |
c906108c | 4279 | target_mourn_inferior (); |
8a3fe4f8 | 4280 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4281 | } |
c906108c | 4282 | if (remote_debug) |
0f71a2f6 | 4283 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4284 | goto retry; |
4285 | } | |
4286 | } | |
4287 | while (c != '$'); | |
4288 | ||
4289 | /* We've found the start of a packet, now collect the data. */ | |
4290 | ||
c2d11a7d | 4291 | val = read_frame (buf, sizeof_buf); |
c906108c | 4292 | |
c2d11a7d | 4293 | if (val >= 0) |
c906108c SS |
4294 | { |
4295 | if (remote_debug) | |
43e526b9 JM |
4296 | { |
4297 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4298 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4299 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4300 | } | |
2cd58942 | 4301 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4302 | return 0; |
c906108c SS |
4303 | } |
4304 | ||
4305 | /* Try the whole thing again. */ | |
4306 | retry: | |
2cd58942 | 4307 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4308 | } |
4309 | ||
23860348 MS |
4310 | /* We have tried hard enough, and just can't receive the packet. |
4311 | Give up. */ | |
c906108c | 4312 | |
a3f17187 | 4313 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4314 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4315 | return 1; |
c906108c SS |
4316 | } |
4317 | \f | |
4318 | static void | |
fba45db2 | 4319 | remote_kill (void) |
c906108c SS |
4320 | { |
4321 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4322 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4323 | if (kill_kludge) | |
4324 | { | |
4325 | kill_kludge = 0; | |
4326 | target_mourn_inferior (); | |
4327 | return; | |
4328 | } | |
4329 | ||
4330 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4331 | speaking terms with the remote system. */ | |
c5aa993b | 4332 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4333 | |
4334 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4335 | we do or not. For the existing stubs, kill is a noop. */ | |
4336 | target_mourn_inferior (); | |
4337 | } | |
4338 | ||
23860348 | 4339 | /* Async version of remote_kill. */ |
43ff13b4 | 4340 | static void |
fba45db2 | 4341 | remote_async_kill (void) |
43ff13b4 | 4342 | { |
23860348 | 4343 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4344 | if (target_is_async_p ()) |
2cd58942 | 4345 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4346 | |
4347 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4348 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4349 | if (kill_kludge) | |
4350 | { | |
4351 | kill_kludge = 0; | |
4352 | target_mourn_inferior (); | |
4353 | return; | |
4354 | } | |
4355 | ||
23860348 MS |
4356 | /* Use catch_errors so the user can quit from gdb even when we |
4357 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4358 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4359 | |
4360 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4361 | we do or not. For the existing stubs, kill is a noop. */ | |
4362 | target_mourn_inferior (); | |
4363 | } | |
4364 | ||
c906108c | 4365 | static void |
fba45db2 | 4366 | remote_mourn (void) |
c906108c SS |
4367 | { |
4368 | remote_mourn_1 (&remote_ops); | |
4369 | } | |
4370 | ||
53a5351d | 4371 | static void |
fba45db2 | 4372 | remote_async_mourn (void) |
53a5351d JM |
4373 | { |
4374 | remote_mourn_1 (&remote_async_ops); | |
4375 | } | |
4376 | ||
c906108c | 4377 | static void |
fba45db2 | 4378 | extended_remote_mourn (void) |
c906108c SS |
4379 | { |
4380 | /* We do _not_ want to mourn the target like this; this will | |
4381 | remove the extended remote target from the target stack, | |
802188a7 | 4382 | and the next time the user says "run" it'll fail. |
c906108c SS |
4383 | |
4384 | FIXME: What is the right thing to do here? */ | |
4385 | #if 0 | |
4386 | remote_mourn_1 (&extended_remote_ops); | |
4387 | #endif | |
4388 | } | |
4389 | ||
4390 | /* Worker function for remote_mourn. */ | |
4391 | static void | |
fba45db2 | 4392 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4393 | { |
4394 | unpush_target (target); | |
4395 | generic_mourn_inferior (); | |
4396 | } | |
4397 | ||
4398 | /* In the extended protocol we want to be able to do things like | |
4399 | "run" and have them basically work as expected. So we need | |
802188a7 | 4400 | a special create_inferior function. |
c906108c SS |
4401 | |
4402 | FIXME: One day add support for changing the exec file | |
4403 | we're debugging, arguments and an environment. */ | |
4404 | ||
4405 | static void | |
23860348 MS |
4406 | extended_remote_create_inferior (char *exec_file, char *args, |
4407 | char **env, int from_tty) | |
c906108c SS |
4408 | { |
4409 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4410 | the remote server. */ | |
4411 | remove_breakpoints (); | |
4412 | ||
4413 | /* Now restart the remote server. */ | |
4414 | extended_remote_restart (); | |
4415 | ||
4416 | /* Now put the breakpoints back in. This way we're safe if the | |
4417 | restart function works via a unix fork on the remote side. */ | |
4418 | insert_breakpoints (); | |
4419 | ||
4420 | /* Clean up from the last time we were running. */ | |
4421 | clear_proceed_status (); | |
4422 | ||
4423 | /* Let the remote process run. */ | |
4424 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4425 | } | |
4426 | ||
23860348 | 4427 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4428 | static void |
23860348 MS |
4429 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4430 | char **env, int from_tty) | |
43ff13b4 JM |
4431 | { |
4432 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4433 | the remote server. */ | |
4434 | remove_breakpoints (); | |
4435 | ||
4436 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4437 | with the event loop. */ |
362646f5 | 4438 | if (target_can_async_p ()) |
2acceee2 | 4439 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4440 | |
4441 | /* Now restart the remote server. */ | |
4442 | extended_remote_restart (); | |
4443 | ||
4444 | /* Now put the breakpoints back in. This way we're safe if the | |
4445 | restart function works via a unix fork on the remote side. */ | |
4446 | insert_breakpoints (); | |
4447 | ||
4448 | /* Clean up from the last time we were running. */ | |
4449 | clear_proceed_status (); | |
4450 | ||
4451 | /* Let the remote process run. */ | |
4452 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4453 | } | |
c906108c | 4454 | \f |
c5aa993b | 4455 | |
aaab4dba | 4456 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4457 | instruction than other targets; in those use |
4458 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4459 | Also, bi-endian targets may define | |
4460 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4461 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4462 | just call the standard routines that are in mem-break.c. */ | |
4463 | ||
4464 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4465 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4466 | the ARCH-OS-tdep.c code can override the default. */ | |
4467 | ||
4468 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4469 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4470 | #endif |
4471 | ||
7fec2c59 | 4472 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4473 | |
4474 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4475 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4476 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4477 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4478 | #endif |
4479 | ||
7fec2c59 AC |
4480 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4481 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4482 | |
7fec2c59 | 4483 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4484 | |
aaab4dba AC |
4485 | /* Insert a breakpoint on targets that don't have any better |
4486 | breakpoint support. We read the contents of the target location | |
4487 | and stash it, then overwrite it with a breakpoint instruction. | |
4488 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4489 | is a pointer to memory allocated for saving the target contents. | |
4490 | It is guaranteed by the caller to be long enough to save the number | |
4491 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4492 | |
4493 | static int | |
fba45db2 | 4494 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4495 | { |
d01949b6 | 4496 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4497 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4498 | int val; |
802188a7 | 4499 | #endif |
96baa820 JM |
4500 | int bp_size; |
4501 | ||
d471ea57 AC |
4502 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4503 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4504 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4505 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4506 | |
d471ea57 | 4507 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4508 | { |
d01949b6 | 4509 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4510 | char *p = buf; |
802188a7 | 4511 | |
0caabb7e | 4512 | addr = remote_address_masked (addr); |
96baa820 JM |
4513 | *(p++) = 'Z'; |
4514 | *(p++) = '0'; | |
4515 | *(p++) = ','; | |
0caabb7e AC |
4516 | p += hexnumstr (p, (ULONGEST) addr); |
4517 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4518 | sprintf (p, ",%d", bp_size); |
802188a7 | 4519 | |
96baa820 | 4520 | putpkt (buf); |
d01949b6 | 4521 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4522 | |
d471ea57 | 4523 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4524 | { |
d471ea57 AC |
4525 | case PACKET_ERROR: |
4526 | return -1; | |
4527 | case PACKET_OK: | |
4528 | return 0; | |
4529 | case PACKET_UNKNOWN: | |
4530 | break; | |
96baa820 JM |
4531 | } |
4532 | } | |
c906108c | 4533 | |
802188a7 | 4534 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4535 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4536 | ||
4537 | if (val == 0) | |
4538 | { | |
d7449b42 | 4539 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4540 | val = target_write_memory (addr, (char *) big_break_insn, |
4541 | sizeof big_break_insn); | |
4542 | else | |
4543 | val = target_write_memory (addr, (char *) little_break_insn, | |
4544 | sizeof little_break_insn); | |
4545 | } | |
4546 | ||
4547 | return val; | |
4548 | #else | |
4549 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4550 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4551 | } |
4552 | ||
4553 | static int | |
fba45db2 | 4554 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4555 | { |
d01949b6 | 4556 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4557 | int bp_size; |
4558 | ||
d471ea57 | 4559 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4560 | { |
d01949b6 | 4561 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4562 | char *p = buf; |
802188a7 | 4563 | |
96baa820 JM |
4564 | *(p++) = 'z'; |
4565 | *(p++) = '0'; | |
4566 | *(p++) = ','; | |
4567 | ||
0caabb7e AC |
4568 | addr = remote_address_masked (addr); |
4569 | p += hexnumstr (p, (ULONGEST) addr); | |
4570 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4571 | sprintf (p, ",%d", bp_size); |
802188a7 | 4572 | |
96baa820 | 4573 | putpkt (buf); |
d01949b6 | 4574 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4575 | |
4576 | return (buf[0] == 'E'); | |
4577 | } | |
4578 | ||
7fec2c59 | 4579 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4580 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4581 | #else | |
4582 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4583 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4584 | } |
4585 | ||
d471ea57 AC |
4586 | static int |
4587 | watchpoint_to_Z_packet (int type) | |
4588 | { | |
4589 | switch (type) | |
4590 | { | |
4591 | case hw_write: | |
4592 | return 2; | |
4593 | break; | |
4594 | case hw_read: | |
4595 | return 3; | |
4596 | break; | |
4597 | case hw_access: | |
4598 | return 4; | |
4599 | break; | |
4600 | default: | |
8e65ff28 | 4601 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4602 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
4603 | } |
4604 | } | |
4605 | ||
3c3bea1c | 4606 | static int |
fba45db2 | 4607 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4608 | { |
d01949b6 AC |
4609 | struct remote_state *rs = get_remote_state (); |
4610 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4611 | char *p; |
d471ea57 | 4612 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4613 | |
d471ea57 | 4614 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
8a3fe4f8 | 4615 | error (_("Can't set hardware watchpoints without the '%s' (%s) packet."), |
d471ea57 AC |
4616 | remote_protocol_Z[packet].name, |
4617 | remote_protocol_Z[packet].title); | |
802188a7 | 4618 | |
d471ea57 | 4619 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4620 | p = strchr (buf, '\0'); |
4621 | addr = remote_address_masked (addr); | |
4622 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4623 | sprintf (p, ",%x", len); |
802188a7 | 4624 | |
96baa820 | 4625 | putpkt (buf); |
d01949b6 | 4626 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4627 | |
d471ea57 AC |
4628 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4629 | { | |
4630 | case PACKET_ERROR: | |
4631 | case PACKET_UNKNOWN: | |
4632 | return -1; | |
4633 | case PACKET_OK: | |
4634 | return 0; | |
4635 | } | |
8e65ff28 | 4636 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4637 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
4638 | } |
4639 | ||
d471ea57 | 4640 | |
3c3bea1c | 4641 | static int |
fba45db2 | 4642 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4643 | { |
d01949b6 AC |
4644 | struct remote_state *rs = get_remote_state (); |
4645 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4646 | char *p; |
d471ea57 AC |
4647 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4648 | ||
4649 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
8a3fe4f8 | 4650 | error (_("Can't clear hardware watchpoints without the '%s' (%s) packet."), |
d471ea57 AC |
4651 | remote_protocol_Z[packet].name, |
4652 | remote_protocol_Z[packet].title); | |
802188a7 | 4653 | |
d471ea57 | 4654 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4655 | p = strchr (buf, '\0'); |
4656 | addr = remote_address_masked (addr); | |
4657 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4658 | sprintf (p, ",%x", len); |
96baa820 | 4659 | putpkt (buf); |
d01949b6 | 4660 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4661 | |
d471ea57 AC |
4662 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4663 | { | |
4664 | case PACKET_ERROR: | |
4665 | case PACKET_UNKNOWN: | |
4666 | return -1; | |
4667 | case PACKET_OK: | |
4668 | return 0; | |
4669 | } | |
8e65ff28 | 4670 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4671 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
4672 | } |
4673 | ||
3c3bea1c | 4674 | |
501eef12 AC |
4675 | int remote_hw_watchpoint_limit = -1; |
4676 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4677 | |
b9362cc7 | 4678 | static int |
3c3bea1c | 4679 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4680 | { |
3c3bea1c GS |
4681 | if (type == bp_hardware_breakpoint) |
4682 | { | |
4683 | if (remote_hw_breakpoint_limit == 0) | |
4684 | return 0; | |
501eef12 AC |
4685 | else if (remote_hw_breakpoint_limit < 0) |
4686 | return 1; | |
3c3bea1c GS |
4687 | else if (cnt <= remote_hw_breakpoint_limit) |
4688 | return 1; | |
4689 | } | |
4690 | else | |
4691 | { | |
4692 | if (remote_hw_watchpoint_limit == 0) | |
4693 | return 0; | |
501eef12 AC |
4694 | else if (remote_hw_watchpoint_limit < 0) |
4695 | return 1; | |
3c3bea1c GS |
4696 | else if (ot) |
4697 | return -1; | |
4698 | else if (cnt <= remote_hw_watchpoint_limit) | |
4699 | return 1; | |
4700 | } | |
4701 | return -1; | |
4702 | } | |
4703 | ||
b9362cc7 | 4704 | static int |
3c3bea1c GS |
4705 | remote_stopped_by_watchpoint (void) |
4706 | { | |
4707 | return remote_stopped_by_watchpoint_p; | |
4708 | } | |
4709 | ||
7270d8f2 OF |
4710 | extern int stepped_after_stopped_by_watchpoint; |
4711 | ||
4aa7a7f5 JJ |
4712 | static int |
4713 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4714 | { |
4aa7a7f5 | 4715 | int rc = 0; |
7270d8f2 OF |
4716 | if (remote_stopped_by_watchpoint () |
4717 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4718 | { |
4719 | *addr_p = remote_watch_data_address; | |
4720 | rc = 1; | |
4721 | } | |
4722 | ||
4723 | return rc; | |
3c3bea1c GS |
4724 | } |
4725 | ||
4726 | ||
4727 | static int | |
4728 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4729 | { | |
4730 | int len = 0; | |
d01949b6 AC |
4731 | struct remote_state *rs = get_remote_state (); |
4732 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4733 | char *p = buf; |
802188a7 | 4734 | |
c8189ed1 GS |
4735 | /* The length field should be set to the size of a breakpoint |
4736 | instruction. */ | |
4737 | ||
802188a7 | 4738 | BREAKPOINT_FROM_PC (&addr, &len); |
3c3bea1c | 4739 | |
d471ea57 | 4740 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
8a3fe4f8 | 4741 | error (_("Can't set hardware breakpoint without the '%s' (%s) packet."), |
d471ea57 AC |
4742 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, |
4743 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4744 | |
96baa820 JM |
4745 | *(p++) = 'Z'; |
4746 | *(p++) = '1'; | |
4747 | *(p++) = ','; | |
802188a7 | 4748 | |
96baa820 JM |
4749 | addr = remote_address_masked (addr); |
4750 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4751 | sprintf (p, ",%x", len); |
96baa820 JM |
4752 | |
4753 | putpkt (buf); | |
d01949b6 | 4754 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4755 | |
d471ea57 AC |
4756 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4757 | { | |
4758 | case PACKET_ERROR: | |
4759 | case PACKET_UNKNOWN: | |
4760 | return -1; | |
4761 | case PACKET_OK: | |
4762 | return 0; | |
4763 | } | |
8e65ff28 | 4764 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4765 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
4766 | } |
4767 | ||
d471ea57 | 4768 | |
802188a7 | 4769 | static int |
3c3bea1c | 4770 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) |
96baa820 | 4771 | { |
3c3bea1c | 4772 | int len; |
d01949b6 AC |
4773 | struct remote_state *rs = get_remote_state (); |
4774 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4775 | char *p = buf; |
c8189ed1 GS |
4776 | |
4777 | /* The length field should be set to the size of a breakpoint | |
4778 | instruction. */ | |
4779 | ||
4780 | BREAKPOINT_FROM_PC (&addr, &len); | |
4781 | ||
d471ea57 | 4782 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
8a3fe4f8 | 4783 | error (_("Can't clear hardware breakpoint without the '%s' (%s) packet."), |
d471ea57 AC |
4784 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, |
4785 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4786 | |
96baa820 JM |
4787 | *(p++) = 'z'; |
4788 | *(p++) = '1'; | |
4789 | *(p++) = ','; | |
802188a7 | 4790 | |
96baa820 JM |
4791 | addr = remote_address_masked (addr); |
4792 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4793 | sprintf (p, ",%x", len); |
96baa820 JM |
4794 | |
4795 | putpkt(buf); | |
d01949b6 | 4796 | getpkt (buf, (rs->remote_packet_size), 0); |
802188a7 | 4797 | |
d471ea57 AC |
4798 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4799 | { | |
4800 | case PACKET_ERROR: | |
4801 | case PACKET_UNKNOWN: | |
4802 | return -1; | |
4803 | case PACKET_OK: | |
4804 | return 0; | |
4805 | } | |
8e65ff28 | 4806 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4807 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 4808 | } |
96baa820 | 4809 | |
c906108c SS |
4810 | /* Some targets are only capable of doing downloads, and afterwards |
4811 | they switch to the remote serial protocol. This function provides | |
4812 | a clean way to get from the download target to the remote target. | |
4813 | It's basically just a wrapper so that we don't have to expose any | |
4814 | of the internal workings of remote.c. | |
4815 | ||
4816 | Prior to calling this routine, you should shutdown the current | |
4817 | target code, else you will get the "A program is being debugged | |
4818 | already..." message. Usually a call to pop_target() suffices. */ | |
4819 | ||
4820 | void | |
fba45db2 | 4821 | push_remote_target (char *name, int from_tty) |
c906108c | 4822 | { |
a3f17187 | 4823 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
4824 | remote_open (name, from_tty); |
4825 | } | |
4826 | ||
23860348 | 4827 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 4828 | |
c5aa993b JM |
4829 | static unsigned long crc32_table[256] = |
4830 | {0, 0}; | |
c906108c SS |
4831 | |
4832 | static unsigned long | |
fba45db2 | 4833 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4834 | { |
c5aa993b | 4835 | if (!crc32_table[1]) |
c906108c | 4836 | { |
23860348 | 4837 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
4838 | int i, j; |
4839 | unsigned int c; | |
4840 | ||
4841 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4842 | { |
4843 | for (c = i << 24, j = 8; j > 0; --j) | |
4844 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4845 | crc32_table[i] = c; | |
4846 | } | |
c906108c SS |
4847 | } |
4848 | ||
4849 | while (len--) | |
4850 | { | |
4851 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4852 | buf++; | |
4853 | } | |
4854 | return crc; | |
4855 | } | |
4856 | ||
4857 | /* compare-sections command | |
4858 | ||
4859 | With no arguments, compares each loadable section in the exec bfd | |
4860 | with the same memory range on the target, and reports mismatches. | |
4861 | Useful for verifying the image on the target against the exec file. | |
4862 | Depends on the target understanding the new "qCRC:" request. */ | |
4863 | ||
e514a9d6 JM |
4864 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4865 | target method (target verify memory) and generic version of the | |
4866 | actual command. This will allow other high-level code (especially | |
23860348 | 4867 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 4868 | |
c906108c | 4869 | static void |
fba45db2 | 4870 | compare_sections_command (char *args, int from_tty) |
c906108c | 4871 | { |
d01949b6 | 4872 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4873 | asection *s; |
4874 | unsigned long host_crc, target_crc; | |
4875 | extern bfd *exec_bfd; | |
4876 | struct cleanup *old_chain; | |
085dd6e6 JM |
4877 | char *tmp; |
4878 | char *sectdata; | |
ce359b09 | 4879 | const char *sectname; |
d01949b6 | 4880 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4881 | bfd_size_type size; |
4882 | bfd_vma lma; | |
4883 | int matched = 0; | |
4884 | int mismatched = 0; | |
4885 | ||
4886 | if (!exec_bfd) | |
8a3fe4f8 | 4887 | error (_("command cannot be used without an exec file")); |
c906108c SS |
4888 | if (!current_target.to_shortname || |
4889 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 4890 | error (_("command can only be used with remote target")); |
c906108c | 4891 | |
c5aa993b | 4892 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4893 | { |
4894 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4895 | continue; /* skip non-loadable section */ |
c906108c | 4896 | |
2c500098 | 4897 | size = bfd_get_section_size (s); |
c906108c | 4898 | if (size == 0) |
c5aa993b | 4899 | continue; /* skip zero-length section */ |
c906108c | 4900 | |
ce359b09 | 4901 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4902 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4903 | continue; /* not the section selected by user */ |
c906108c | 4904 | |
c5aa993b | 4905 | matched = 1; /* do this section */ |
c906108c | 4906 | lma = s->lma; |
23860348 | 4907 | /* FIXME: assumes lma can fit into long. */ |
c906108c SS |
4908 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); |
4909 | putpkt (buf); | |
4910 | ||
23860348 MS |
4911 | /* Be clever; compute the host_crc before waiting for target |
4912 | reply. */ | |
c906108c | 4913 | sectdata = xmalloc (size); |
b8c9b27d | 4914 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4915 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4916 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4917 | ||
d01949b6 | 4918 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 4919 | if (buf[0] == 'E') |
8a3fe4f8 | 4920 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 4921 | sectname, paddr (lma), paddr (lma + size)); |
c906108c | 4922 | if (buf[0] != 'C') |
8a3fe4f8 | 4923 | error (_("remote target does not support this operation")); |
c906108c SS |
4924 | |
4925 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4926 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4927 | ||
d4f3574e SS |
4928 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4929 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4930 | if (host_crc == target_crc) |
4931 | printf_filtered ("matched.\n"); | |
4932 | else | |
c5aa993b JM |
4933 | { |
4934 | printf_filtered ("MIS-MATCHED!\n"); | |
4935 | mismatched++; | |
4936 | } | |
c906108c SS |
4937 | |
4938 | do_cleanups (old_chain); | |
4939 | } | |
4940 | if (mismatched > 0) | |
8a3fe4f8 AC |
4941 | warning (_("One or more sections of the remote executable does not match\n\ |
4942 | the loaded file\n")); | |
c906108c | 4943 | if (args && !matched) |
a3f17187 | 4944 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
4945 | } |
4946 | ||
1e3ff5ad | 4947 | static LONGEST |
4b8a223f | 4948 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
8aa91c1e | 4949 | const char *annex, void *readbuf, const void *writebuf, |
1e3ff5ad | 4950 | ULONGEST offset, LONGEST len) |
c906108c | 4951 | { |
d01949b6 | 4952 | struct remote_state *rs = get_remote_state (); |
c906108c | 4953 | int i; |
d01949b6 | 4954 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 4955 | char *p2 = &buf2[0]; |
1e3ff5ad | 4956 | char query_type; |
c906108c | 4957 | |
21e3b9b9 DJ |
4958 | /* Handle memory using remote_xfer_memory. */ |
4959 | if (object == TARGET_OBJECT_MEMORY) | |
4960 | { | |
4961 | int xfered; | |
4962 | errno = 0; | |
4963 | ||
4964 | if (writebuf != NULL) | |
4965 | { | |
4966 | void *buffer = xmalloc (len); | |
4967 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4968 | memcpy (buffer, writebuf, len); | |
4969 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4970 | do_cleanups (cleanup); | |
4971 | } | |
4972 | else | |
4973 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4974 | ||
4975 | if (xfered > 0) | |
4976 | return xfered; | |
4977 | else if (xfered == 0 && errno == 0) | |
4978 | return 0; | |
4979 | else | |
4980 | return -1; | |
4981 | } | |
4982 | ||
4b8a223f AC |
4983 | /* Only handle reads. */ |
4984 | if (writebuf != NULL || readbuf == NULL) | |
4985 | return -1; | |
4986 | ||
1e3ff5ad AC |
4987 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4988 | objects!!! Instead specify new query packets. */ | |
4989 | switch (object) | |
c906108c | 4990 | { |
1e3ff5ad AC |
4991 | case TARGET_OBJECT_KOD: |
4992 | query_type = 'K'; | |
4993 | break; | |
4994 | case TARGET_OBJECT_AVR: | |
4995 | query_type = 'R'; | |
4996 | break; | |
802188a7 RM |
4997 | |
4998 | case TARGET_OBJECT_AUXV: | |
4999 | if (remote_protocol_qPart_auxv.support != PACKET_DISABLE) | |
5000 | { | |
5001 | unsigned int total = 0; | |
5002 | while (len > 0) | |
5003 | { | |
5004 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
5005 | snprintf (buf2, rs->remote_packet_size, | |
5006 | "qPart:auxv:read::%s,%s", | |
5007 | phex_nz (offset, sizeof offset), | |
5008 | phex_nz (n, sizeof n)); | |
5009 | i = putpkt (buf2); | |
5010 | if (i < 0) | |
5011 | return total > 0 ? total : i; | |
5012 | buf2[0] = '\0'; | |
5013 | getpkt (buf2, rs->remote_packet_size, 0); | |
5014 | if (packet_ok (buf2, &remote_protocol_qPart_auxv) != PACKET_OK) | |
5015 | return total > 0 ? total : -1; | |
5016 | if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0') | |
5017 | break; /* Got EOF indicator. */ | |
5018 | /* Got some data. */ | |
5019 | i = hex2bin (buf2, readbuf, len); | |
5020 | if (i > 0) | |
5021 | { | |
5022 | readbuf = (void *) ((char *) readbuf + i); | |
5023 | offset += i; | |
5024 | len -= i; | |
5025 | total += i; | |
5026 | } | |
5027 | } | |
5028 | return total; | |
5029 | } | |
5030 | return -1; | |
5031 | ||
1e3ff5ad | 5032 | default: |
c906108c SS |
5033 | return -1; |
5034 | } | |
5035 | ||
4b8a223f | 5036 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5037 | buffer size. */ |
4b8a223f | 5038 | if (offset == 0 && len == 0) |
1e3ff5ad AC |
5039 | return (rs->remote_packet_size); |
5040 | /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is | |
5041 | not large enough let the caller. */ | |
5042 | if (len < (rs->remote_packet_size)) | |
5043 | return -1; | |
5044 | len = rs->remote_packet_size; | |
5045 | ||
23860348 | 5046 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5047 | if (!remote_desc) |
8a3fe4f8 | 5048 | error (_("remote query is only available after target open")); |
c906108c | 5049 | |
1e3ff5ad | 5050 | gdb_assert (annex != NULL); |
4b8a223f | 5051 | gdb_assert (readbuf != NULL); |
c906108c SS |
5052 | |
5053 | *p2++ = 'q'; | |
5054 | *p2++ = query_type; | |
5055 | ||
23860348 MS |
5056 | /* We used one buffer char for the remote protocol q command and |
5057 | another for the query type. As the remote protocol encapsulation | |
5058 | uses 4 chars plus one extra in case we are debugging | |
5059 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5060 | string. */ | |
c906108c | 5061 | i = 0; |
1e3ff5ad | 5062 | while (annex[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c | 5063 | { |
1e3ff5ad AC |
5064 | /* Bad caller may have sent forbidden characters. */ |
5065 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5066 | *p2++ = annex[i]; | |
c906108c SS |
5067 | i++; |
5068 | } | |
1e3ff5ad AC |
5069 | *p2 = '\0'; |
5070 | gdb_assert (annex[i] == '\0'); | |
c906108c SS |
5071 | |
5072 | i = putpkt (buf2); | |
c5aa993b JM |
5073 | if (i < 0) |
5074 | return i; | |
c906108c | 5075 | |
4b8a223f | 5076 | getpkt (readbuf, len, 0); |
c906108c | 5077 | |
4b8a223f | 5078 | return strlen (readbuf); |
c906108c SS |
5079 | } |
5080 | ||
96baa820 JM |
5081 | static void |
5082 | remote_rcmd (char *command, | |
d9fcf2fb | 5083 | struct ui_file *outbuf) |
96baa820 | 5084 | { |
d01949b6 | 5085 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5086 | int i; |
d01949b6 | 5087 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5088 | char *p = buf; |
5089 | ||
5090 | if (!remote_desc) | |
8a3fe4f8 | 5091 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5092 | |
23860348 | 5093 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5094 | if (command == NULL) |
5095 | command = ""; | |
5096 | ||
23860348 | 5097 | /* The query prefix. */ |
96baa820 JM |
5098 | strcpy (buf, "qRcmd,"); |
5099 | p = strchr (buf, '\0'); | |
5100 | ||
d01949b6 | 5101 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
8a3fe4f8 | 5102 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5103 | |
23860348 | 5104 | /* Encode the actual command. */ |
30559e10 | 5105 | bin2hex (command, p, 0); |
96baa820 JM |
5106 | |
5107 | if (putpkt (buf) < 0) | |
8a3fe4f8 | 5108 | error (_("Communication problem with target.")); |
96baa820 JM |
5109 | |
5110 | /* get/display the response */ | |
5111 | while (1) | |
5112 | { | |
23860348 | 5113 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
96baa820 | 5114 | buf[0] = '\0'; |
d01949b6 | 5115 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 5116 | if (buf[0] == '\0') |
8a3fe4f8 | 5117 | error (_("Target does not support this command.")); |
96baa820 JM |
5118 | if (buf[0] == 'O' && buf[1] != 'K') |
5119 | { | |
23860348 | 5120 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5121 | continue; |
5122 | } | |
5123 | if (strcmp (buf, "OK") == 0) | |
5124 | break; | |
7be570e7 JM |
5125 | if (strlen (buf) == 3 && buf[0] == 'E' |
5126 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5127 | { | |
8a3fe4f8 | 5128 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5129 | } |
96baa820 JM |
5130 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5131 | { | |
5132 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5133 | fputc_unfiltered (c, outbuf); | |
5134 | } | |
5135 | break; | |
5136 | } | |
5137 | } | |
5138 | ||
c906108c | 5139 | static void |
fba45db2 | 5140 | packet_command (char *args, int from_tty) |
c906108c | 5141 | { |
d01949b6 AC |
5142 | struct remote_state *rs = get_remote_state (); |
5143 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5144 | |
c5aa993b | 5145 | if (!remote_desc) |
8a3fe4f8 | 5146 | error (_("command can only be used with remote target")); |
c906108c | 5147 | |
c5aa993b | 5148 | if (!args) |
8a3fe4f8 | 5149 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5150 | |
5151 | puts_filtered ("sending: "); | |
5152 | print_packet (args); | |
5153 | puts_filtered ("\n"); | |
5154 | putpkt (args); | |
5155 | ||
d01949b6 | 5156 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5157 | puts_filtered ("received: "); |
5158 | print_packet (buf); | |
5159 | puts_filtered ("\n"); | |
5160 | } | |
5161 | ||
5162 | #if 0 | |
23860348 | 5163 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5164 | |
a14ed312 | 5165 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5166 | |
a14ed312 | 5167 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5168 | |
a14ed312 | 5169 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5170 | |
a14ed312 | 5171 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5172 | |
23860348 | 5173 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5174 | |
a14ed312 | 5175 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5176 | |
23860348 | 5177 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5178 | |
a14ed312 | 5179 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5180 | |
a14ed312 | 5181 | static void init_remote_threadtests (void); |
c906108c | 5182 | |
23860348 | 5183 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5184 | |
5185 | static void | |
fba45db2 | 5186 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5187 | { |
5188 | int sample_thread = SAMPLE_THREAD; | |
5189 | ||
a3f17187 | 5190 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5191 | set_thread (sample_thread, 1); |
5192 | } | |
5193 | ||
5194 | ||
5195 | static void | |
fba45db2 | 5196 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5197 | { |
5198 | int sample_thread = SAMPLE_THREAD; | |
5199 | ||
39f77062 | 5200 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5201 | printf_filtered ("PASS: Thread alive test\n"); |
5202 | else | |
5203 | printf_filtered ("FAIL: Thread alive test\n"); | |
5204 | } | |
5205 | ||
23860348 | 5206 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5207 | |
5208 | void | |
fba45db2 | 5209 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5210 | { |
5211 | char hexid[20]; | |
5212 | ||
23860348 | 5213 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5214 | hexid[16] = 0; |
5215 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5216 | } | |
5217 | ||
5218 | static void | |
fba45db2 | 5219 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5220 | { |
5221 | int startflag = 1; | |
5222 | threadref nextthread; | |
5223 | int done, result_count; | |
5224 | threadref threadlist[3]; | |
5225 | ||
5226 | printf_filtered ("Remote Threadlist test\n"); | |
5227 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5228 | &result_count, &threadlist[0])) | |
5229 | printf_filtered ("FAIL: threadlist test\n"); | |
5230 | else | |
5231 | { | |
5232 | threadref *scan = threadlist; | |
5233 | threadref *limit = scan + result_count; | |
5234 | ||
5235 | while (scan < limit) | |
5236 | output_threadid (" thread ", scan++); | |
5237 | } | |
5238 | } | |
5239 | ||
5240 | void | |
fba45db2 | 5241 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5242 | { |
5243 | output_threadid ("Threadid: ", &info->threadid); | |
5244 | printf_filtered ("Name: %s\n ", info->shortname); | |
5245 | printf_filtered ("State: %s\n", info->display); | |
5246 | printf_filtered ("other: %s\n\n", info->more_display); | |
5247 | } | |
5248 | ||
5249 | int | |
fba45db2 | 5250 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5251 | { |
5252 | int result; | |
5253 | int set; | |
5254 | struct gdb_ext_thread_info threadinfo; | |
5255 | ||
5256 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5257 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5258 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5259 | display_thread_info (&threadinfo); | |
5260 | return result; | |
5261 | } | |
5262 | ||
5263 | static void | |
fba45db2 | 5264 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5265 | { |
5266 | int athread = SAMPLE_THREAD; | |
5267 | threadref thread; | |
5268 | int set; | |
5269 | ||
5270 | int_to_threadref (&thread, athread); | |
5271 | printf_filtered ("Remote Threadinfo test\n"); | |
5272 | if (!get_and_display_threadinfo (&thread)) | |
5273 | printf_filtered ("FAIL cannot get thread info\n"); | |
5274 | } | |
5275 | ||
5276 | static int | |
fba45db2 | 5277 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5278 | { |
5279 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5280 | return get_and_display_threadinfo (ref); | |
5281 | } | |
5282 | ||
5283 | static void | |
fba45db2 | 5284 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5285 | { |
5286 | printf_filtered ("Remote Threadlist update test\n"); | |
5287 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5288 | } | |
5289 | ||
5290 | static void | |
5291 | init_remote_threadtests (void) | |
5292 | { | |
1bedd215 AC |
5293 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5294 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5295 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5296 | _("Fetch and display info about one thread")); |
c906108c | 5297 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5298 | _("Test setting to a different thread")); |
c906108c | 5299 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5300 | _("Iterate through updating all remote thread info")); |
c906108c | 5301 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5302 | _(" Remote thread alive test ")); |
c906108c SS |
5303 | } |
5304 | ||
5305 | #endif /* 0 */ | |
5306 | ||
f3fb8c85 MS |
5307 | /* Convert a thread ID to a string. Returns the string in a static |
5308 | buffer. */ | |
5309 | ||
5310 | static char * | |
39f77062 | 5311 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5312 | { |
5313 | static char buf[30]; | |
5314 | ||
39f77062 | 5315 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5316 | return buf; |
5317 | } | |
5318 | ||
c906108c | 5319 | static void |
fba45db2 | 5320 | init_remote_ops (void) |
c906108c | 5321 | { |
c5aa993b | 5322 | remote_ops.to_shortname = "remote"; |
c906108c | 5323 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5324 | remote_ops.to_doc = |
c906108c | 5325 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5326 | Specify the serial device it is connected to\n\ |
5327 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5328 | remote_ops.to_open = remote_open; |
5329 | remote_ops.to_close = remote_close; | |
c906108c | 5330 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5331 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5332 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5333 | remote_ops.to_wait = remote_wait; |
5334 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5335 | remote_ops.to_store_registers = remote_store_registers; | |
5336 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5337 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5338 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5339 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5340 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5341 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5342 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5343 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5344 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5345 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5346 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5347 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5348 | remote_ops.to_kill = remote_kill; |
5349 | remote_ops.to_load = generic_load; | |
c906108c SS |
5350 | remote_ops.to_mourn_inferior = remote_mourn; |
5351 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5352 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5353 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5354 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5355 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5356 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5357 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5358 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5359 | remote_ops.to_has_all_memory = 1; |
5360 | remote_ops.to_has_memory = 1; | |
5361 | remote_ops.to_has_stack = 1; | |
5362 | remote_ops.to_has_registers = 1; | |
5363 | remote_ops.to_has_execution = 1; | |
5364 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5365 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5366 | } |
5367 | ||
5368 | /* Set up the extended remote vector by making a copy of the standard | |
5369 | remote vector and adding to it. */ | |
5370 | ||
5371 | static void | |
fba45db2 | 5372 | init_extended_remote_ops (void) |
c906108c SS |
5373 | { |
5374 | extended_remote_ops = remote_ops; | |
5375 | ||
0f71a2f6 | 5376 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5377 | extended_remote_ops.to_longname = |
c906108c | 5378 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5379 | extended_remote_ops.to_doc = |
c906108c SS |
5380 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5381 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5382 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5383 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5384 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5385 | } |
5386 | ||
6426a772 JM |
5387 | static int |
5388 | remote_can_async_p (void) | |
5389 | { | |
23860348 | 5390 | /* We're async whenever the serial device is. */ |
2cd58942 | 5391 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5392 | } |
5393 | ||
5394 | static int | |
5395 | remote_is_async_p (void) | |
5396 | { | |
23860348 | 5397 | /* We're async whenever the serial device is. */ |
2cd58942 | 5398 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5399 | } |
5400 | ||
2acceee2 JM |
5401 | /* Pass the SERIAL event on and up to the client. One day this code |
5402 | will be able to delay notifying the client of an event until the | |
23860348 | 5403 | point where an entire packet has been received. */ |
2acceee2 | 5404 | |
23860348 MS |
5405 | static void (*async_client_callback) (enum inferior_event_type event_type, |
5406 | void *context); | |
2acceee2 JM |
5407 | static void *async_client_context; |
5408 | static serial_event_ftype remote_async_serial_handler; | |
5409 | ||
6426a772 | 5410 | static void |
819cc324 | 5411 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5412 | { |
2acceee2 JM |
5413 | /* Don't propogate error information up to the client. Instead let |
5414 | the client find out about the error by querying the target. */ | |
5415 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5416 | } | |
5417 | ||
5418 | static void | |
23860348 MS |
5419 | remote_async (void (*callback) (enum inferior_event_type event_type, |
5420 | void *context), void *context) | |
2acceee2 | 5421 | { |
ed9a39eb | 5422 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5423 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5424 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5425 | |
2acceee2 JM |
5426 | if (callback != NULL) |
5427 | { | |
2cd58942 | 5428 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5429 | async_client_callback = callback; |
5430 | async_client_context = context; | |
5431 | } | |
5432 | else | |
2cd58942 | 5433 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5434 | } |
5435 | ||
43ff13b4 JM |
5436 | /* Target async and target extended-async. |
5437 | ||
5438 | This are temporary targets, until it is all tested. Eventually | |
5439 | async support will be incorporated int the usual 'remote' | |
23860348 | 5440 | target. */ |
43ff13b4 JM |
5441 | |
5442 | static void | |
c2d11a7d | 5443 | init_remote_async_ops (void) |
43ff13b4 JM |
5444 | { |
5445 | remote_async_ops.to_shortname = "async"; | |
23860348 MS |
5446 | remote_async_ops.to_longname = |
5447 | "Remote serial target in async version of the gdb-specific protocol"; | |
c5aa993b | 5448 | remote_async_ops.to_doc = |
43ff13b4 JM |
5449 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5450 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5451 | remote_async_ops.to_open = remote_async_open; |
5452 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5453 | remote_async_ops.to_detach = remote_detach; |
5454 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5455 | remote_async_ops.to_resume = remote_async_resume; |
5456 | remote_async_ops.to_wait = remote_async_wait; | |
5457 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5458 | remote_async_ops.to_store_registers = remote_store_registers; | |
5459 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5460 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5461 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5462 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5463 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5464 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5465 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5466 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5467 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5468 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5469 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5470 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5471 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5472 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5473 | remote_async_ops.to_kill = remote_async_kill; |
5474 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5475 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5476 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5477 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5478 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5479 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5480 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5481 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5482 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5483 | remote_async_ops.to_stratum = process_stratum; |
5484 | remote_async_ops.to_has_all_memory = 1; | |
5485 | remote_async_ops.to_has_memory = 1; | |
5486 | remote_async_ops.to_has_stack = 1; | |
5487 | remote_async_ops.to_has_registers = 1; | |
5488 | remote_async_ops.to_has_execution = 1; | |
5489 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5490 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5491 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5492 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5493 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5494 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5495 | } |
5496 | ||
5497 | /* Set up the async extended remote vector by making a copy of the standard | |
5498 | remote vector and adding to it. */ | |
5499 | ||
5500 | static void | |
c2d11a7d | 5501 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5502 | { |
5503 | extended_async_remote_ops = remote_async_ops; | |
5504 | ||
5505 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5506 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5507 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5508 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5509 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5510 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5511 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5512 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5513 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5514 | } | |
5515 | ||
5a2468f5 | 5516 | static void |
c2d11a7d | 5517 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5518 | { |
5a2468f5 JM |
5519 | } |
5520 | ||
d471ea57 AC |
5521 | static void |
5522 | show_remote_cmd (char *args, int from_tty) | |
5523 | { | |
e9e68a56 AC |
5524 | /* FIXME: cagney/2002-06-15: This function should iterate over |
5525 | remote_show_cmdlist for a list of sub commands to show. */ | |
08546159 AC |
5526 | show_remote_protocol_Z_packet_cmd (gdb_stdout, from_tty, NULL, NULL); |
5527 | show_remote_protocol_P_packet_cmd (gdb_stdout, from_tty, NULL, NULL); | |
5528 | show_remote_protocol_p_packet_cmd (gdb_stdout, from_tty, NULL, NULL); | |
5529 | show_remote_protocol_qSymbol_packet_cmd (gdb_stdout, from_tty, NULL, NULL); | |
5530 | show_remote_protocol_vcont_packet_cmd (gdb_stdout, from_tty, NULL, NULL); | |
5531 | show_remote_protocol_binary_download_cmd (gdb_stdout, from_tty, NULL, NULL); | |
5532 | show_remote_protocol_qPart_auxv_packet_cmd (gdb_stdout, from_tty, NULL, NULL); | |
d471ea57 | 5533 | } |
5a2468f5 | 5534 | |
0f71a2f6 | 5535 | static void |
fba45db2 | 5536 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5537 | { |
d696208f | 5538 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5539 | } |
5540 | ||
23860348 | 5541 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
5542 | static void (*remote_new_objfile_chain) (struct objfile *); |
5543 | ||
23860348 | 5544 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
5545 | static void |
5546 | remote_new_objfile (struct objfile *objfile) | |
5547 | { | |
23860348 | 5548 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
5549 | { |
5550 | remote_check_symbols (objfile); | |
5551 | } | |
23860348 | 5552 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
5553 | if (remote_new_objfile_chain != 0 && |
5554 | remote_desc == 0) | |
5555 | remote_new_objfile_chain (objfile); | |
5556 | } | |
5557 | ||
c906108c | 5558 | void |
fba45db2 | 5559 | _initialize_remote (void) |
c906108c | 5560 | { |
5a2468f5 JM |
5561 | static struct cmd_list_element *remote_set_cmdlist; |
5562 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5563 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5564 | |
0f71a2f6 | 5565 | /* architecture specific data */ |
23860348 MS |
5566 | remote_gdbarch_data_handle = |
5567 | gdbarch_data_register_post_init (init_remote_state); | |
d01949b6 AC |
5568 | |
5569 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5570 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5571 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5572 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5573 | |
c906108c SS |
5574 | init_remote_ops (); |
5575 | add_target (&remote_ops); | |
5576 | ||
5577 | init_extended_remote_ops (); | |
5578 | add_target (&extended_remote_ops); | |
cce74817 | 5579 | |
43ff13b4 JM |
5580 | init_remote_async_ops (); |
5581 | add_target (&remote_async_ops); | |
5582 | ||
5583 | init_extended_async_remote_ops (); | |
5584 | add_target (&extended_async_remote_ops); | |
5585 | ||
dc8acb97 | 5586 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5587 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5588 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5589 | |
c906108c SS |
5590 | #if 0 |
5591 | init_remote_threadtests (); | |
5592 | #endif | |
5593 | ||
23860348 | 5594 | /* set/show remote ... */ |
d471ea57 | 5595 | |
1bedd215 | 5596 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
5597 | Remote protocol specific variables\n\ |
5598 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5599 | the packets being used"), |
cff3e48b | 5600 | &remote_set_cmdlist, "set remote ", |
23860348 | 5601 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 5602 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
5603 | Remote protocol specific variables\n\ |
5604 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5605 | the packets being used"), |
cff3e48b | 5606 | &remote_show_cmdlist, "show remote ", |
23860348 | 5607 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 5608 | |
1a966eab AC |
5609 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
5610 | Compare section data on target to the exec file.\n\ | |
5611 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
5612 | &cmdlist); |
5613 | ||
1a966eab AC |
5614 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
5615 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
5616 | maintenance packet TEXT\n\ |
5617 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5618 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5619 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 5620 | terminating `#' character and checksum."), |
c906108c SS |
5621 | &maintenancelist); |
5622 | ||
7915a72c AC |
5623 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
5624 | Set whether to send break if interrupted."), _("\ | |
5625 | Show whether to send break if interrupted."), _("\ | |
5626 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
5627 | NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ | |
e707bbc2 AC |
5628 | NULL, NULL, |
5629 | &setlist, &showlist); | |
c906108c | 5630 | |
23860348 | 5631 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 5632 | |
1a966eab AC |
5633 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
5634 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 5635 | &setlist); |
1a966eab AC |
5636 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
5637 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
5638 | &showlist); |
5639 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
5640 | set_memory_write_packet_size, _("\ |
5641 | Set the maximum number of bytes per memory-write packet.\n\ | |
5642 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5643 | default packet size. The actual limit is further reduced\n\ | |
5644 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5645 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5646 | &remote_set_cmdlist); |
5647 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
5648 | set_memory_read_packet_size, _("\ |
5649 | Set the maximum number of bytes per memory-read packet.\n\ | |
5650 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5651 | default packet size. The actual limit is further reduced\n\ | |
5652 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5653 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5654 | &remote_set_cmdlist); |
5655 | add_cmd ("memory-write-packet-size", no_class, | |
5656 | show_memory_write_packet_size, | |
1a966eab | 5657 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
5658 | &remote_show_cmdlist); |
5659 | add_cmd ("memory-read-packet-size", no_class, | |
5660 | show_memory_read_packet_size, | |
1a966eab | 5661 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 5662 | &remote_show_cmdlist); |
c906108c | 5663 | |
b3f42336 | 5664 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
5665 | &remote_hw_watchpoint_limit, _("\ |
5666 | Set the maximum number of target hardware watchpoints."), _("\ | |
5667 | Show the maximum number of target hardware watchpoints."), _("\ | |
5668 | Specify a negative limit for unlimited."), | |
5669 | NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ | |
b3f42336 AC |
5670 | NULL, NULL, |
5671 | &remote_set_cmdlist, &remote_show_cmdlist); | |
5672 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
5673 | &remote_hw_breakpoint_limit, _("\ |
5674 | Set the maximum number of target hardware breakpoints."), _("\ | |
5675 | Show the maximum number of target hardware breakpoints."), _("\ | |
5676 | Specify a negative limit for unlimited."), | |
5677 | NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ | |
b3f42336 AC |
5678 | NULL, NULL, |
5679 | &remote_set_cmdlist, &remote_show_cmdlist); | |
501eef12 | 5680 | |
cb1a6d5f | 5681 | deprecated_add_show_from_set |
c906108c | 5682 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5683 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5684 | "Set the maximum size of the address (in bits) \ |
5685 | in a memory packet.\n", | |
5686 | &setlist), | |
c5aa993b | 5687 | &showlist); |
c906108c | 5688 | |
96baa820 JM |
5689 | add_packet_config_cmd (&remote_protocol_binary_download, |
5690 | "X", "binary-download", | |
5691 | set_remote_protocol_binary_download_cmd, | |
5692 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5693 | &remote_set_cmdlist, &remote_show_cmdlist, |
5694 | 1); | |
96baa820 JM |
5695 | #if 0 |
5696 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
23860348 | 5697 | compatibility. */ |
cb1a6d5f | 5698 | deprecated_add_show_from_set |
b83266a0 SS |
5699 | (add_set_cmd ("remotebinarydownload", no_class, |
5700 | var_boolean, (char *) &remote_binary_download, | |
5701 | "Set binary downloads.\n", &setlist), | |
5702 | &showlist); | |
96baa820 | 5703 | #endif |
0f71a2f6 | 5704 | |
506fb367 DJ |
5705 | add_packet_config_cmd (&remote_protocol_vcont, |
5706 | "vCont", "verbose-resume", | |
5707 | set_remote_protocol_vcont_packet_cmd, | |
5708 | show_remote_protocol_vcont_packet_cmd, | |
5709 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5710 | 0); | |
5711 | ||
dc8acb97 MS |
5712 | add_packet_config_cmd (&remote_protocol_qSymbol, |
5713 | "qSymbol", "symbol-lookup", | |
5714 | set_remote_protocol_qSymbol_packet_cmd, | |
5715 | show_remote_protocol_qSymbol_packet_cmd, | |
5716 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5717 | 0); | |
5718 | ||
d471ea57 AC |
5719 | add_packet_config_cmd (&remote_protocol_P, |
5720 | "P", "set-register", | |
5a2468f5 JM |
5721 | set_remote_protocol_P_packet_cmd, |
5722 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5723 | &remote_set_cmdlist, &remote_show_cmdlist, |
5724 | 1); | |
5725 | ||
b96ec7ac AC |
5726 | add_packet_config_cmd (&remote_protocol_p, |
5727 | "p", "fetch-register", | |
5728 | set_remote_protocol_p_packet_cmd, | |
5729 | show_remote_protocol_p_packet_cmd, | |
5730 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5731 | 1); | |
5732 | ||
d471ea57 AC |
5733 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], |
5734 | "Z0", "software-breakpoint", | |
5735 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5736 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5737 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5738 | 0); | |
5739 | ||
5740 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5741 | "Z1", "hardware-breakpoint", | |
5742 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5743 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5744 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5745 | 0); | |
5746 | ||
5747 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5748 | "Z2", "write-watchpoint", | |
5749 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5750 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5751 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5752 | 0); | |
5753 | ||
5754 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5755 | "Z3", "read-watchpoint", | |
5756 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5757 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5758 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5759 | 0); | |
5760 | ||
5761 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5762 | "Z4", "access-watchpoint", | |
5763 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5764 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5765 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5766 | 0); | |
5767 | ||
802188a7 RM |
5768 | add_packet_config_cmd (&remote_protocol_qPart_auxv, |
5769 | "qPart_auxv", "read-aux-vector", | |
5770 | set_remote_protocol_qPart_auxv_packet_cmd, | |
5771 | show_remote_protocol_qPart_auxv_packet_cmd, | |
5772 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5773 | 0); | |
5774 | ||
23860348 | 5775 | /* Keep the old ``set remote Z-packet ...'' working. */ |
e9e68a56 | 5776 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
5777 | &remote_Z_packet_detect, _("\ |
5778 | Set use of remote protocol `Z' packets"), _("\ | |
5779 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 5780 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c AC |
5781 | packets."), |
5782 | NULL, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ | |
e9e68a56 AC |
5783 | set_remote_protocol_Z_packet_cmd, |
5784 | show_remote_protocol_Z_packet_cmd, | |
5785 | &remote_set_cmdlist, &remote_show_cmdlist); | |
449092f6 CV |
5786 | |
5787 | /* Eventually initialize fileio. See fileio.c */ | |
5788 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5789 | } |