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 | 661 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 662 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
e9e68a56 AC |
663 | set_func, show_func, |
664 | set_remote_list, show_remote_list); | |
23860348 | 665 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
666 | if (legacy) |
667 | { | |
668 | char *legacy_name; | |
b435e160 | 669 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
670 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
671 | set_remote_list); | |
672 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
673 | show_remote_list); | |
674 | } | |
5a2468f5 JM |
675 | } |
676 | ||
d471ea57 AC |
677 | static enum packet_result |
678 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 679 | { |
d471ea57 | 680 | if (buf[0] != '\0') |
5a2468f5 | 681 | { |
d471ea57 | 682 | /* The stub recognized the packet request. Check that the |
23860348 | 683 | operation succeeded. */ |
d471ea57 AC |
684 | switch (config->support) |
685 | { | |
686 | case PACKET_SUPPORT_UNKNOWN: | |
687 | if (remote_debug) | |
688 | fprintf_unfiltered (gdb_stdlog, | |
689 | "Packet %s (%s) is supported\n", | |
690 | config->name, config->title); | |
691 | config->support = PACKET_ENABLE; | |
692 | break; | |
693 | case PACKET_DISABLE: | |
8e65ff28 | 694 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 695 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
696 | break; |
697 | case PACKET_ENABLE: | |
698 | break; | |
699 | } | |
700 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
23860348 | 701 | /* "OK" - definitly OK. */ |
d471ea57 AC |
702 | return PACKET_OK; |
703 | if (buf[0] == 'E' | |
704 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
705 | && buf[3] == '\0') | |
23860348 | 706 | /* "Enn" - definitly an error. */ |
d471ea57 | 707 | return PACKET_ERROR; |
23860348 | 708 | /* The packet may or may not be OK. Just assume it is. */ |
d471ea57 AC |
709 | return PACKET_OK; |
710 | } | |
711 | else | |
712 | { | |
23860348 | 713 | /* The stub does not support the packet. */ |
d471ea57 AC |
714 | switch (config->support) |
715 | { | |
716 | case PACKET_ENABLE: | |
7f19b9a2 | 717 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 718 | /* If the stub previously indicated that the packet was |
23860348 | 719 | supported then there is a protocol error.. */ |
8a3fe4f8 | 720 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
721 | config->name, config->title); |
722 | else | |
23860348 | 723 | /* The user set it wrong. */ |
8a3fe4f8 | 724 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
725 | config->name, config->title); |
726 | break; | |
727 | case PACKET_SUPPORT_UNKNOWN: | |
728 | if (remote_debug) | |
729 | fprintf_unfiltered (gdb_stdlog, | |
730 | "Packet %s (%s) is NOT supported\n", | |
731 | config->name, config->title); | |
732 | config->support = PACKET_DISABLE; | |
733 | break; | |
734 | case PACKET_DISABLE: | |
735 | break; | |
736 | } | |
737 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
738 | } |
739 | } | |
740 | ||
23860348 | 741 | /* Should we try the 'vCont' (descriptive resume) request? */ |
506fb367 DJ |
742 | static struct packet_config remote_protocol_vcont; |
743 | ||
744 | static void | |
745 | set_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
746 | struct cmd_list_element *c) | |
747 | { | |
748 | update_packet_config (&remote_protocol_vcont); | |
749 | } | |
750 | ||
751 | static void | |
08546159 AC |
752 | show_remote_protocol_vcont_packet_cmd (struct ui_file *file, int from_tty, |
753 | struct cmd_list_element *c, | |
754 | const char *value) | |
506fb367 | 755 | { |
08546159 | 756 | deprecated_show_value_hack (file, from_tty, c, value); |
506fb367 DJ |
757 | show_packet_config_cmd (&remote_protocol_vcont); |
758 | } | |
759 | ||
23860348 | 760 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
dc8acb97 MS |
761 | static struct packet_config remote_protocol_qSymbol; |
762 | ||
763 | static void | |
764 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
765 | struct cmd_list_element *c) | |
766 | { | |
767 | update_packet_config (&remote_protocol_qSymbol); | |
768 | } | |
769 | ||
770 | static void | |
08546159 AC |
771 | show_remote_protocol_qSymbol_packet_cmd (struct ui_file *file, int from_tty, |
772 | struct cmd_list_element *c, | |
773 | const char *value) | |
dc8acb97 | 774 | { |
08546159 | 775 | deprecated_show_value_hack (file, from_tty, c, value); |
dc8acb97 MS |
776 | show_packet_config_cmd (&remote_protocol_qSymbol); |
777 | } | |
778 | ||
5a2468f5 JM |
779 | /* Should we try the 'P' (set register) request? */ |
780 | ||
781 | static struct packet_config remote_protocol_P; | |
782 | ||
783 | static void | |
fba45db2 KB |
784 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
785 | struct cmd_list_element *c) | |
5a2468f5 | 786 | { |
d471ea57 | 787 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
788 | } |
789 | ||
790 | static void | |
08546159 AC |
791 | show_remote_protocol_P_packet_cmd (struct ui_file *file, int from_tty, |
792 | struct cmd_list_element *c, | |
793 | const char *value) | |
5a2468f5 | 794 | { |
08546159 | 795 | deprecated_show_value_hack (file, from_tty, c, value); |
5a2468f5 JM |
796 | show_packet_config_cmd (&remote_protocol_P); |
797 | } | |
798 | ||
d471ea57 AC |
799 | /* Should we try one of the 'Z' requests? */ |
800 | ||
801 | enum Z_packet_type | |
802 | { | |
803 | Z_PACKET_SOFTWARE_BP, | |
804 | Z_PACKET_HARDWARE_BP, | |
805 | Z_PACKET_WRITE_WP, | |
806 | Z_PACKET_READ_WP, | |
807 | Z_PACKET_ACCESS_WP, | |
808 | NR_Z_PACKET_TYPES | |
809 | }; | |
96baa820 | 810 | |
d471ea57 AC |
811 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
812 | ||
813 | /* FIXME: Instead of having all these boiler plate functions, the | |
23860348 | 814 | command callback should include a context argument. */ |
d471ea57 AC |
815 | |
816 | static void | |
817 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
818 | struct cmd_list_element *c) | |
819 | { | |
820 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
821 | } | |
822 | ||
823 | static void | |
08546159 AC |
824 | show_remote_protocol_Z_software_bp_packet_cmd (struct ui_file *file, int from_tty, |
825 | struct cmd_list_element *c, | |
826 | const char *value) | |
d471ea57 | 827 | { |
08546159 | 828 | deprecated_show_value_hack (file, from_tty, c, value); |
d471ea57 AC |
829 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); |
830 | } | |
831 | ||
832 | static void | |
833 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
834 | struct cmd_list_element *c) | |
835 | { | |
836 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
837 | } | |
838 | ||
839 | static void | |
08546159 AC |
840 | show_remote_protocol_Z_hardware_bp_packet_cmd (struct ui_file *file, int from_tty, |
841 | struct cmd_list_element *c, | |
842 | const char *value) | |
d471ea57 | 843 | { |
08546159 | 844 | deprecated_show_value_hack (file, from_tty, c, value); |
d471ea57 AC |
845 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); |
846 | } | |
847 | ||
848 | static void | |
849 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
850 | struct cmd_list_element *c) | |
851 | { | |
852 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
853 | } | |
854 | ||
855 | static void | |
08546159 AC |
856 | show_remote_protocol_Z_write_wp_packet_cmd (struct ui_file *file, int from_tty, |
857 | struct cmd_list_element *c, | |
858 | const char *value) | |
d471ea57 | 859 | { |
08546159 | 860 | deprecated_show_value_hack (file, from_tty, c, value); |
d471ea57 AC |
861 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); |
862 | } | |
863 | ||
864 | static void | |
865 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
866 | struct cmd_list_element *c) | |
867 | { | |
868 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
869 | } | |
870 | ||
871 | static void | |
08546159 AC |
872 | show_remote_protocol_Z_read_wp_packet_cmd (struct ui_file *file, int from_tty, |
873 | struct cmd_list_element *c, | |
874 | const char *value) | |
d471ea57 | 875 | { |
08546159 | 876 | deprecated_show_value_hack (file, from_tty, c, value); |
d471ea57 AC |
877 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); |
878 | } | |
879 | ||
880 | static void | |
881 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
882 | struct cmd_list_element *c) | |
883 | { | |
884 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
885 | } | |
886 | ||
887 | static void | |
08546159 AC |
888 | show_remote_protocol_Z_access_wp_packet_cmd (struct ui_file *file, int from_tty, |
889 | struct cmd_list_element *c, | |
890 | const char *value) | |
d471ea57 | 891 | { |
08546159 | 892 | deprecated_show_value_hack (file, from_tty, c, value); |
d471ea57 AC |
893 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); |
894 | } | |
895 | ||
896 | /* For compatibility with older distributions. Provide a ``set remote | |
23860348 | 897 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 898 | |
7f19b9a2 | 899 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
900 | |
901 | static void | |
fba45db2 KB |
902 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
903 | struct cmd_list_element *c) | |
96baa820 | 904 | { |
d471ea57 AC |
905 | int i; |
906 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
907 | { | |
908 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
909 | update_packet_config (&remote_protocol_Z[i]); | |
910 | } | |
96baa820 JM |
911 | } |
912 | ||
913 | static void | |
08546159 AC |
914 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
915 | struct cmd_list_element *c, | |
916 | const char *value) | |
96baa820 | 917 | { |
d471ea57 AC |
918 | int i; |
919 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
920 | { | |
921 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
922 | } | |
96baa820 JM |
923 | } |
924 | ||
925 | /* Should we try the 'X' (remote binary download) packet? | |
926 | ||
927 | This variable (available to the user via "set remote X-packet") | |
928 | dictates whether downloads are sent in binary (via the 'X' packet). | |
929 | We assume that the stub can, and attempt to do it. This will be | |
930 | cleared if the stub does not understand it. This switch is still | |
931 | needed, though in cases when the packet is supported in the stub, | |
932 | but the connection does not allow it (i.e., 7-bit serial connection | |
23860348 | 933 | only). */ |
96baa820 JM |
934 | |
935 | static struct packet_config remote_protocol_binary_download; | |
936 | ||
9d1f7ab2 MS |
937 | /* Should we try the 'ThreadInfo' query packet? |
938 | ||
939 | This variable (NOT available to the user: auto-detect only!) | |
940 | determines whether GDB will use the new, simpler "ThreadInfo" | |
941 | query or the older, more complex syntax for thread queries. | |
802188a7 | 942 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
943 | and set to false when the target fails to recognize it). */ |
944 | ||
945 | static int use_threadinfo_query; | |
946 | static int use_threadextra_query; | |
947 | ||
96baa820 JM |
948 | static void |
949 | set_remote_protocol_binary_download_cmd (char *args, | |
950 | int from_tty, | |
951 | struct cmd_list_element *c) | |
952 | { | |
d471ea57 | 953 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
954 | } |
955 | ||
956 | static void | |
08546159 AC |
957 | show_remote_protocol_binary_download_cmd (struct ui_file *file, int from_tty, |
958 | struct cmd_list_element *c, | |
959 | const char *value) | |
96baa820 | 960 | { |
08546159 | 961 | deprecated_show_value_hack (file, from_tty, c, value); |
96baa820 JM |
962 | show_packet_config_cmd (&remote_protocol_binary_download); |
963 | } | |
964 | ||
23860348 | 965 | /* Should we try the 'qPart:auxv' (target auxiliary vector read) request? */ |
802188a7 RM |
966 | static struct packet_config remote_protocol_qPart_auxv; |
967 | ||
968 | static void | |
969 | set_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
970 | struct cmd_list_element *c) | |
971 | { | |
972 | update_packet_config (&remote_protocol_qPart_auxv); | |
973 | } | |
974 | ||
975 | static void | |
08546159 AC |
976 | show_remote_protocol_qPart_auxv_packet_cmd (struct ui_file *file, int from_tty, |
977 | struct cmd_list_element *c, | |
978 | const char *value) | |
802188a7 | 979 | { |
08546159 | 980 | deprecated_show_value_hack (file, from_tty, c, value); |
802188a7 RM |
981 | show_packet_config_cmd (&remote_protocol_qPart_auxv); |
982 | } | |
983 | ||
b96ec7ac AC |
984 | static struct packet_config remote_protocol_p; |
985 | ||
986 | static void | |
987 | set_remote_protocol_p_packet_cmd (char *args, int from_tty, | |
988 | struct cmd_list_element *c) | |
989 | { | |
990 | update_packet_config (&remote_protocol_p); | |
991 | } | |
992 | ||
993 | static void | |
08546159 AC |
994 | show_remote_protocol_p_packet_cmd (struct ui_file *file, int from_tty, |
995 | struct cmd_list_element *c, | |
996 | const char *value) | |
b96ec7ac | 997 | { |
08546159 | 998 | deprecated_show_value_hack (file, from_tty, c, value); |
b96ec7ac AC |
999 | show_packet_config_cmd (&remote_protocol_p); |
1000 | } | |
1001 | ||
1002 | ||
c906108c | 1003 | |
23860348 | 1004 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
1005 | static void *sigint_remote_twice_token; |
1006 | static void *sigint_remote_token; | |
43ff13b4 | 1007 | |
c906108c SS |
1008 | /* These are pointers to hook functions that may be set in order to |
1009 | modify resume/wait behavior for a particular architecture. */ | |
1010 | ||
9a4105ab AC |
1011 | void (*deprecated_target_resume_hook) (void); |
1012 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
1013 | \f |
1014 | ||
c5aa993b | 1015 | |
c906108c SS |
1016 | /* These are the threads which we last sent to the remote system. |
1017 | -1 for all or -2 for not sent yet. */ | |
1018 | static int general_thread; | |
cce74817 | 1019 | static int continue_thread; |
c906108c SS |
1020 | |
1021 | /* Call this function as a result of | |
1022 | 1) A halt indication (T packet) containing a thread id | |
1023 | 2) A direct query of currthread | |
1024 | 3) Successful execution of set thread | |
1025 | */ | |
1026 | ||
1027 | static void | |
fba45db2 | 1028 | record_currthread (int currthread) |
c906108c | 1029 | { |
c906108c | 1030 | general_thread = currthread; |
cce74817 | 1031 | |
c906108c SS |
1032 | /* If this is a new thread, add it to GDB's thread list. |
1033 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1034 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1035 | { |
39f77062 | 1036 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1037 | ui_out_text (uiout, "[New "); |
39f77062 | 1038 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1039 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1040 | } |
c906108c SS |
1041 | } |
1042 | ||
1043 | #define MAGIC_NULL_PID 42000 | |
1044 | ||
1045 | static void | |
fba45db2 | 1046 | set_thread (int th, int gen) |
c906108c | 1047 | { |
d01949b6 AC |
1048 | struct remote_state *rs = get_remote_state (); |
1049 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1050 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1051 | |
1052 | if (state == th) | |
1053 | return; | |
1054 | ||
1055 | buf[0] = 'H'; | |
1056 | buf[1] = gen ? 'g' : 'c'; | |
1057 | if (th == MAGIC_NULL_PID) | |
1058 | { | |
1059 | buf[2] = '0'; | |
1060 | buf[3] = '\0'; | |
1061 | } | |
1062 | else if (th < 0) | |
1063 | sprintf (&buf[2], "-%x", -th); | |
1064 | else | |
1065 | sprintf (&buf[2], "%x", th); | |
1066 | putpkt (buf); | |
d01949b6 | 1067 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1068 | if (gen) |
c5aa993b | 1069 | general_thread = th; |
c906108c | 1070 | else |
cce74817 | 1071 | continue_thread = th; |
c906108c SS |
1072 | } |
1073 | \f | |
1074 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1075 | ||
1076 | static int | |
39f77062 | 1077 | remote_thread_alive (ptid_t ptid) |
c906108c | 1078 | { |
39f77062 | 1079 | int tid = PIDGET (ptid); |
cce74817 | 1080 | char buf[16]; |
c906108c | 1081 | |
cce74817 JM |
1082 | if (tid < 0) |
1083 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1084 | else |
cce74817 | 1085 | sprintf (buf, "T%08x", tid); |
c906108c | 1086 | putpkt (buf); |
c2d11a7d | 1087 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1088 | return (buf[0] == 'O' && buf[1] == 'K'); |
1089 | } | |
1090 | ||
1091 | /* About these extended threadlist and threadinfo packets. They are | |
1092 | variable length packets but, the fields within them are often fixed | |
1093 | length. They are redundent enough to send over UDP as is the | |
1094 | remote protocol in general. There is a matching unit test module | |
1095 | in libstub. */ | |
1096 | ||
cce74817 JM |
1097 | #define OPAQUETHREADBYTES 8 |
1098 | ||
1099 | /* a 64 bit opaque identifier */ | |
1100 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1101 | ||
23860348 MS |
1102 | /* WARNING: This threadref data structure comes from the remote O.S., |
1103 | libstub protocol encoding, and remote.c. it is not particularly | |
1104 | changable. */ | |
cce74817 JM |
1105 | |
1106 | /* Right now, the internal structure is int. We want it to be bigger. | |
1107 | Plan to fix this. | |
c5aa993b | 1108 | */ |
cce74817 | 1109 | |
23860348 | 1110 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1111 | |
9d1f7ab2 | 1112 | /* gdb_ext_thread_info is an internal GDB data structure which is |
23860348 | 1113 | equivalint to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1114 | |
1115 | struct gdb_ext_thread_info | |
c5aa993b | 1116 | { |
23860348 MS |
1117 | threadref threadid; /* External form of thread reference. */ |
1118 | int active; /* Has state interesting to GDB? | |
1119 | regs, stack. */ | |
1120 | char display[256]; /* Brief state display, name, | |
1121 | blocked/syspended. */ | |
1122 | char shortname[32]; /* To be used to name threads. */ | |
1123 | char more_display[256]; /* Long info, statistics, queue depth, | |
1124 | whatever. */ | |
c5aa993b | 1125 | }; |
cce74817 JM |
1126 | |
1127 | /* The volume of remote transfers can be limited by submitting | |
1128 | a mask containing bits specifying the desired information. | |
1129 | Use a union of these values as the 'selection' parameter to | |
1130 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1131 | */ |
cce74817 JM |
1132 | |
1133 | #define TAG_THREADID 1 | |
1134 | #define TAG_EXISTS 2 | |
1135 | #define TAG_DISPLAY 4 | |
1136 | #define TAG_THREADNAME 8 | |
c5aa993b | 1137 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1138 | |
23860348 | 1139 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1140 | |
b2dd6311 | 1141 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1142 | |
a14ed312 | 1143 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1144 | |
a14ed312 | 1145 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1146 | |
23860348 | 1147 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1148 | |
a14ed312 | 1149 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1150 | |
a14ed312 | 1151 | static char *pack_int (char *buf, int value); |
cce74817 | 1152 | |
a14ed312 | 1153 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1154 | |
a14ed312 | 1155 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1156 | |
23860348 | 1157 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1158 | |
23860348 | 1159 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1160 | |
23860348 | 1161 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1162 | |
23860348 | 1163 | static int threadref_to_int (threadref *ref); |
cce74817 | 1164 | |
23860348 | 1165 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1166 | |
23860348 | 1167 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1168 | |
23860348 MS |
1169 | static char *pack_threadinfo_request (char *pkt, int mode, |
1170 | threadref *id); | |
cce74817 | 1171 | |
a14ed312 | 1172 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1173 | threadref *expectedref, |
a14ed312 KB |
1174 | struct gdb_ext_thread_info |
1175 | *info); | |
cce74817 JM |
1176 | |
1177 | ||
23860348 MS |
1178 | static int remote_get_threadinfo (threadref *threadid, |
1179 | int fieldset, /*TAG mask */ | |
a14ed312 | 1180 | struct gdb_ext_thread_info *info); |
cce74817 | 1181 | |
a14ed312 KB |
1182 | static char *pack_threadlist_request (char *pkt, int startflag, |
1183 | int threadcount, | |
23860348 | 1184 | threadref *nextthread); |
cce74817 | 1185 | |
a14ed312 KB |
1186 | static int parse_threadlist_response (char *pkt, |
1187 | int result_limit, | |
23860348 MS |
1188 | threadref *original_echo, |
1189 | threadref *resultlist, | |
1190 | int *doneflag); | |
cce74817 | 1191 | |
a14ed312 | 1192 | static int remote_get_threadlist (int startflag, |
23860348 | 1193 | threadref *nextthread, |
a14ed312 KB |
1194 | int result_limit, |
1195 | int *done, | |
23860348 MS |
1196 | int *result_count, |
1197 | threadref *threadlist); | |
cce74817 | 1198 | |
23860348 | 1199 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1200 | |
a14ed312 KB |
1201 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1202 | void *context, int looplimit); | |
cce74817 | 1203 | |
23860348 | 1204 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1205 | |
23860348 | 1206 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1207 | |
1208 | static const char hexchars[] = "0123456789abcdef"; | |
1209 | ||
1210 | static int | |
fba45db2 | 1211 | ishex (int ch, int *val) |
c906108c SS |
1212 | { |
1213 | if ((ch >= 'a') && (ch <= 'f')) | |
1214 | { | |
1215 | *val = ch - 'a' + 10; | |
1216 | return 1; | |
1217 | } | |
1218 | if ((ch >= 'A') && (ch <= 'F')) | |
1219 | { | |
1220 | *val = ch - 'A' + 10; | |
1221 | return 1; | |
1222 | } | |
1223 | if ((ch >= '0') && (ch <= '9')) | |
1224 | { | |
1225 | *val = ch - '0'; | |
1226 | return 1; | |
1227 | } | |
1228 | return 0; | |
1229 | } | |
1230 | ||
1231 | static int | |
fba45db2 | 1232 | stubhex (int ch) |
c906108c SS |
1233 | { |
1234 | if (ch >= 'a' && ch <= 'f') | |
1235 | return ch - 'a' + 10; | |
1236 | if (ch >= '0' && ch <= '9') | |
1237 | return ch - '0'; | |
1238 | if (ch >= 'A' && ch <= 'F') | |
1239 | return ch - 'A' + 10; | |
1240 | return -1; | |
1241 | } | |
1242 | ||
1243 | static int | |
fba45db2 | 1244 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1245 | { |
1246 | int nibble; | |
1247 | int retval = 0; | |
1248 | ||
1249 | while (fieldlength) | |
1250 | { | |
1251 | nibble = stubhex (*buff++); | |
1252 | retval |= nibble; | |
1253 | fieldlength--; | |
1254 | if (fieldlength) | |
1255 | retval = retval << 4; | |
1256 | } | |
1257 | return retval; | |
1258 | } | |
1259 | ||
1260 | char * | |
fba45db2 | 1261 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1262 | ULONGEST *result) |
c906108c SS |
1263 | { |
1264 | int nibble; | |
1265 | int retval = 0; | |
1266 | ||
1267 | while (ishex (*buff, &nibble)) | |
1268 | { | |
1269 | buff++; | |
1270 | retval = retval << 4; | |
1271 | retval |= nibble & 0x0f; | |
1272 | } | |
1273 | *result = retval; | |
1274 | return buff; | |
1275 | } | |
1276 | ||
1277 | static char * | |
fba45db2 | 1278 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1279 | { |
1280 | ishex (*buf++, val); | |
1281 | return buf; | |
1282 | } | |
1283 | ||
1284 | static char * | |
fba45db2 | 1285 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1286 | { |
1287 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1288 | return buf; | |
1289 | } | |
1290 | ||
1291 | static char * | |
fba45db2 | 1292 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1293 | { |
1294 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1295 | *pkt++ = hexchars[(byte & 0xf)]; | |
1296 | return pkt; | |
1297 | } | |
1298 | ||
1299 | static char * | |
fba45db2 | 1300 | unpack_byte (char *buf, int *value) |
c906108c SS |
1301 | { |
1302 | *value = stub_unpack_int (buf, 2); | |
1303 | return buf + 2; | |
1304 | } | |
1305 | ||
1306 | static char * | |
fba45db2 | 1307 | pack_int (char *buf, int value) |
c906108c SS |
1308 | { |
1309 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1310 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1311 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1312 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1313 | return buf; | |
1314 | } | |
1315 | ||
1316 | static char * | |
fba45db2 | 1317 | unpack_int (char *buf, int *value) |
c906108c SS |
1318 | { |
1319 | *value = stub_unpack_int (buf, 8); | |
1320 | return buf + 8; | |
1321 | } | |
1322 | ||
23860348 | 1323 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1324 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1325 | |
1326 | static char * | |
fba45db2 | 1327 | pack_string (char *pkt, char *string) |
c906108c SS |
1328 | { |
1329 | char ch; | |
1330 | int len; | |
1331 | ||
1332 | len = strlen (string); | |
1333 | if (len > 200) | |
23860348 | 1334 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1335 | pkt = pack_hex_byte (pkt, len); |
1336 | while (len-- > 0) | |
1337 | { | |
1338 | ch = *string++; | |
1339 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1340 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1341 | *pkt++ = ch; |
1342 | } | |
1343 | return pkt; | |
1344 | } | |
1345 | #endif /* 0 (unused) */ | |
1346 | ||
1347 | static char * | |
fba45db2 | 1348 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1349 | { |
1350 | while (length--) | |
1351 | *dest++ = *src++; | |
1352 | *dest = '\0'; | |
1353 | return src; | |
1354 | } | |
1355 | ||
1356 | static char * | |
fba45db2 | 1357 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1358 | { |
1359 | char *limit; | |
1360 | unsigned char *altid; | |
1361 | ||
1362 | altid = (unsigned char *) id; | |
1363 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1364 | while (pkt < limit) | |
1365 | pkt = pack_hex_byte (pkt, *altid++); | |
1366 | return pkt; | |
1367 | } | |
1368 | ||
1369 | ||
1370 | static char * | |
fba45db2 | 1371 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1372 | { |
1373 | char *altref; | |
1374 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1375 | int x, y; | |
1376 | ||
1377 | altref = (char *) id; | |
1378 | ||
1379 | while (inbuf < limit) | |
1380 | { | |
1381 | x = stubhex (*inbuf++); | |
1382 | y = stubhex (*inbuf++); | |
1383 | *altref++ = (x << 4) | y; | |
1384 | } | |
1385 | return inbuf; | |
1386 | } | |
1387 | ||
1388 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1389 | ints. This is due to a mismatch of specifications. We would like | |
1390 | to use 64bit thread references internally. This is an adapter | |
1391 | function. */ | |
1392 | ||
1393 | void | |
fba45db2 | 1394 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1395 | { |
1396 | unsigned char *scan; | |
1397 | ||
1398 | scan = (unsigned char *) id; | |
1399 | { | |
1400 | int i = 4; | |
1401 | while (i--) | |
1402 | *scan++ = 0; | |
1403 | } | |
1404 | *scan++ = (value >> 24) & 0xff; | |
1405 | *scan++ = (value >> 16) & 0xff; | |
1406 | *scan++ = (value >> 8) & 0xff; | |
1407 | *scan++ = (value & 0xff); | |
1408 | } | |
1409 | ||
1410 | static int | |
fba45db2 | 1411 | threadref_to_int (threadref *ref) |
c906108c SS |
1412 | { |
1413 | int i, value = 0; | |
1414 | unsigned char *scan; | |
1415 | ||
1416 | scan = (char *) ref; | |
1417 | scan += 4; | |
1418 | i = 4; | |
1419 | while (i-- > 0) | |
1420 | value = (value << 8) | ((*scan++) & 0xff); | |
1421 | return value; | |
1422 | } | |
1423 | ||
1424 | static void | |
fba45db2 | 1425 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1426 | { |
1427 | int i; | |
1428 | unsigned char *csrc, *cdest; | |
1429 | ||
1430 | csrc = (unsigned char *) src; | |
1431 | cdest = (unsigned char *) dest; | |
1432 | i = 8; | |
1433 | while (i--) | |
1434 | *cdest++ = *csrc++; | |
1435 | } | |
1436 | ||
1437 | static int | |
fba45db2 | 1438 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1439 | { |
23860348 | 1440 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1441 | #if 0 |
1442 | unsigned char *srcp, *destp; | |
1443 | int i, result; | |
1444 | srcp = (char *) src; | |
1445 | destp = (char *) dest; | |
1446 | ||
1447 | result = 1; | |
1448 | while (i-- > 0) | |
1449 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1450 | return result; | |
1451 | #endif | |
1452 | return 1; | |
1453 | } | |
1454 | ||
1455 | /* | |
c5aa993b JM |
1456 | threadid:1, # always request threadid |
1457 | context_exists:2, | |
1458 | display:4, | |
1459 | unique_name:8, | |
1460 | more_display:16 | |
1461 | */ | |
c906108c SS |
1462 | |
1463 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1464 | ||
1465 | static char * | |
fba45db2 | 1466 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1467 | { |
23860348 MS |
1468 | *pkt++ = 'q'; /* Info Query */ |
1469 | *pkt++ = 'P'; /* process or thread info */ | |
1470 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1471 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1472 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1473 | return pkt; |
1474 | } | |
1475 | ||
23860348 | 1476 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1477 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1478 | add more fields as time goes by. */ |
c906108c | 1479 | |
23860348 | 1480 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1481 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1482 | fetch registers and its stack? */ |
c5aa993b | 1483 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1484 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1485 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1486 | the process. */ |
c906108c SS |
1487 | |
1488 | static int | |
fba45db2 KB |
1489 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1490 | struct gdb_ext_thread_info *info) | |
c906108c | 1491 | { |
d01949b6 | 1492 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1493 | int mask, length; |
1494 | unsigned int tag; | |
1495 | threadref ref; | |
d01949b6 | 1496 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1497 | int retval = 1; |
1498 | ||
23860348 | 1499 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1500 | info->active = 0; |
1501 | info->display[0] = '\0'; | |
1502 | info->shortname[0] = '\0'; | |
1503 | info->more_display[0] = '\0'; | |
1504 | ||
23860348 MS |
1505 | /* Assume the characters indicating the packet type have been |
1506 | stripped. */ | |
c906108c SS |
1507 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1508 | pkt = unpack_threadid (pkt, &ref); | |
1509 | ||
1510 | if (mask == 0) | |
8a3fe4f8 | 1511 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1512 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1513 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1514 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1515 | return 0; |
1516 | } | |
1517 | copy_threadref (&info->threadid, &ref); | |
1518 | ||
23860348 | 1519 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1520 | |
23860348 MS |
1521 | /* Packets are terminated with nulls. */ |
1522 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1523 | { |
1524 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1525 | pkt = unpack_byte (pkt, &length); /* length */ |
1526 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1527 | { |
8a3fe4f8 | 1528 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1529 | retval = 0; |
1530 | break; | |
1531 | } | |
1532 | if (tag == TAG_THREADID) | |
1533 | { | |
1534 | if (length != 16) | |
1535 | { | |
8a3fe4f8 | 1536 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1537 | retval = 0; |
1538 | break; | |
1539 | } | |
1540 | pkt = unpack_threadid (pkt, &ref); | |
1541 | mask = mask & ~TAG_THREADID; | |
1542 | continue; | |
1543 | } | |
1544 | if (tag == TAG_EXISTS) | |
1545 | { | |
1546 | info->active = stub_unpack_int (pkt, length); | |
1547 | pkt += length; | |
1548 | mask = mask & ~(TAG_EXISTS); | |
1549 | if (length > 8) | |
1550 | { | |
8a3fe4f8 | 1551 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1552 | retval = 0; |
1553 | break; | |
1554 | } | |
1555 | continue; | |
1556 | } | |
1557 | if (tag == TAG_THREADNAME) | |
1558 | { | |
1559 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1560 | mask = mask & ~TAG_THREADNAME; | |
1561 | continue; | |
1562 | } | |
1563 | if (tag == TAG_DISPLAY) | |
1564 | { | |
1565 | pkt = unpack_string (pkt, &info->display[0], length); | |
1566 | mask = mask & ~TAG_DISPLAY; | |
1567 | continue; | |
1568 | } | |
1569 | if (tag == TAG_MOREDISPLAY) | |
1570 | { | |
1571 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1572 | mask = mask & ~TAG_MOREDISPLAY; | |
1573 | continue; | |
1574 | } | |
8a3fe4f8 | 1575 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1576 | break; /* Not a tag we know about. */ |
c906108c SS |
1577 | } |
1578 | return retval; | |
1579 | } | |
1580 | ||
1581 | static int | |
fba45db2 KB |
1582 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1583 | struct gdb_ext_thread_info *info) | |
c906108c | 1584 | { |
d01949b6 | 1585 | struct remote_state *rs = get_remote_state (); |
c906108c | 1586 | int result; |
d01949b6 | 1587 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1588 | |
1589 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1590 | putpkt (threadinfo_pkt); | |
d01949b6 | 1591 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
23860348 MS |
1592 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, |
1593 | threadid, info); | |
c906108c SS |
1594 | return result; |
1595 | } | |
1596 | ||
c906108c SS |
1597 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1598 | ||
1599 | static char * | |
fba45db2 KB |
1600 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1601 | threadref *nextthread) | |
c906108c SS |
1602 | { |
1603 | *pkt++ = 'q'; /* info query packet */ | |
1604 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1605 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1606 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1607 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1608 | *pkt = '\0'; | |
1609 | return pkt; | |
1610 | } | |
1611 | ||
1612 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1613 | ||
1614 | static int | |
fba45db2 KB |
1615 | parse_threadlist_response (char *pkt, int result_limit, |
1616 | threadref *original_echo, threadref *resultlist, | |
1617 | int *doneflag) | |
c906108c | 1618 | { |
d01949b6 | 1619 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1620 | char *limit; |
1621 | int count, resultcount, done; | |
1622 | ||
1623 | resultcount = 0; | |
1624 | /* Assume the 'q' and 'M chars have been stripped. */ | |
23860348 MS |
1625 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); |
1626 | /* done parse past here */ | |
c906108c SS |
1627 | pkt = unpack_byte (pkt, &count); /* count field */ |
1628 | pkt = unpack_nibble (pkt, &done); | |
1629 | /* The first threadid is the argument threadid. */ | |
1630 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1631 | while ((count-- > 0) && (pkt < limit)) | |
1632 | { | |
1633 | pkt = unpack_threadid (pkt, resultlist++); | |
1634 | if (resultcount++ >= result_limit) | |
1635 | break; | |
1636 | } | |
1637 | if (doneflag) | |
1638 | *doneflag = done; | |
1639 | return resultcount; | |
1640 | } | |
1641 | ||
1642 | static int | |
fba45db2 KB |
1643 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1644 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1645 | { |
d01949b6 | 1646 | struct remote_state *rs = get_remote_state (); |
c906108c | 1647 | static threadref echo_nextthread; |
d01949b6 AC |
1648 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1649 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1650 | int result = 1; |
1651 | ||
23860348 | 1652 | /* Trancate result limit to be smaller than the packet size. */ |
d01949b6 AC |
1653 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1654 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1655 | |
1656 | pack_threadlist_request (threadlist_packet, | |
1657 | startflag, result_limit, nextthread); | |
1658 | putpkt (threadlist_packet); | |
d01949b6 | 1659 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1660 | |
1661 | *result_count = | |
1662 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1663 | threadlist, done); | |
1664 | ||
1665 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1666 | { | |
23860348 MS |
1667 | /* FIXME: This is a good reason to drop the packet. */ |
1668 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1669 | /* Possabilities : |
1670 | retransmit immediatly - race conditions | |
1671 | retransmit after timeout - yes | |
1672 | exit | |
1673 | wait for packet, then exit | |
1674 | */ | |
8a3fe4f8 | 1675 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1676 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1677 | } |
1678 | if (*result_count <= 0) | |
1679 | { | |
1680 | if (*done != 1) | |
1681 | { | |
8a3fe4f8 | 1682 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1683 | result = 0; |
1684 | } | |
1685 | return result; /* break; */ | |
1686 | } | |
1687 | if (*result_count > result_limit) | |
1688 | { | |
1689 | *result_count = 0; | |
8a3fe4f8 | 1690 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1691 | return 0; |
1692 | } | |
1693 | return result; | |
1694 | } | |
1695 | ||
23860348 MS |
1696 | /* This is the interface between remote and threads, remotes upper |
1697 | interface. */ | |
c906108c SS |
1698 | |
1699 | /* remote_find_new_threads retrieves the thread list and for each | |
1700 | thread in the list, looks up the thread in GDB's internal list, | |
1701 | ading the thread if it does not already exist. This involves | |
1702 | getting partial thread lists from the remote target so, polling the | |
1703 | quit_flag is required. */ | |
1704 | ||
1705 | ||
23860348 | 1706 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1707 | |
1708 | #define MAXTHREADLISTRESULTS 32 | |
1709 | ||
1710 | static int | |
fba45db2 KB |
1711 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1712 | int looplimit) | |
c906108c SS |
1713 | { |
1714 | int done, i, result_count; | |
1715 | int startflag = 1; | |
1716 | int result = 1; | |
1717 | int loopcount = 0; | |
1718 | static threadref nextthread; | |
1719 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1720 | ||
1721 | done = 0; | |
1722 | while (!done) | |
1723 | { | |
1724 | if (loopcount++ > looplimit) | |
1725 | { | |
1726 | result = 0; | |
8a3fe4f8 | 1727 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1728 | break; |
1729 | } | |
1730 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1731 | &done, &result_count, resultthreadlist)) | |
1732 | { | |
1733 | result = 0; | |
1734 | break; | |
1735 | } | |
23860348 | 1736 | /* Clear for later iterations. */ |
c906108c SS |
1737 | startflag = 0; |
1738 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1739 | if (result_count >= 1) | |
1740 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1741 | i = 0; | |
1742 | while (result_count--) | |
1743 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1744 | break; | |
1745 | } | |
1746 | return result; | |
1747 | } | |
1748 | ||
1749 | static int | |
fba45db2 | 1750 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1751 | { |
39f77062 | 1752 | ptid_t ptid; |
c906108c | 1753 | |
39f77062 KB |
1754 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1755 | ||
1756 | if (!in_thread_list (ptid)) | |
1757 | add_thread (ptid); | |
c906108c SS |
1758 | return 1; /* continue iterator */ |
1759 | } | |
1760 | ||
1761 | #define CRAZY_MAX_THREADS 1000 | |
1762 | ||
39f77062 KB |
1763 | static ptid_t |
1764 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1765 | { |
d01949b6 AC |
1766 | struct remote_state *rs = get_remote_state (); |
1767 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1768 | |
1769 | putpkt ("qC"); | |
d01949b6 | 1770 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1771 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1772 | /* Use strtoul here, so we'll correctly parse values whose highest |
1773 | bit is set. The protocol carries them as a simple series of | |
1774 | hex digits; in the absence of a sign, strtol will see such | |
1775 | values as positive numbers out of range for signed 'long', and | |
1776 | return LONG_MAX to indicate an overflow. */ | |
1777 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1778 | else |
1779 | return oldpid; | |
1780 | } | |
1781 | ||
802188a7 RM |
1782 | /* Find new threads for info threads command. |
1783 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1784 | */ |
cce74817 JM |
1785 | |
1786 | static void | |
fba45db2 | 1787 | remote_find_new_threads (void) |
c906108c | 1788 | { |
c5aa993b JM |
1789 | remote_threadlist_iterator (remote_newthread_step, 0, |
1790 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1791 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1792 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1793 | } |
1794 | ||
9d1f7ab2 MS |
1795 | /* |
1796 | * Find all threads for info threads command. | |
1797 | * Uses new thread protocol contributed by Cisco. | |
1798 | * Falls back and attempts to use the older method (above) | |
1799 | * if the target doesn't respond to the new method. | |
1800 | */ | |
1801 | ||
0f71a2f6 JM |
1802 | static void |
1803 | remote_threads_info (void) | |
1804 | { | |
d01949b6 AC |
1805 | struct remote_state *rs = get_remote_state (); |
1806 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1807 | char *bufp; |
0f71a2f6 JM |
1808 | int tid; |
1809 | ||
1810 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1811 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1812 | |
9d1f7ab2 MS |
1813 | if (use_threadinfo_query) |
1814 | { | |
1815 | putpkt ("qfThreadInfo"); | |
1816 | bufp = buf; | |
d01949b6 | 1817 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 | 1818 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1819 | { |
9d1f7ab2 MS |
1820 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1821 | { | |
1822 | do | |
1823 | { | |
c273b20f JB |
1824 | /* Use strtoul here, so we'll correctly parse values |
1825 | whose highest bit is set. The protocol carries | |
1826 | them as a simple series of hex digits; in the | |
1827 | absence of a sign, strtol will see such values as | |
1828 | positive numbers out of range for signed 'long', | |
1829 | and return LONG_MAX to indicate an overflow. */ | |
1830 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1831 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1832 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1833 | } |
1834 | while (*bufp++ == ','); /* comma-separated list */ | |
1835 | putpkt ("qsThreadInfo"); | |
1836 | bufp = buf; | |
d01949b6 | 1837 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1838 | } |
1839 | return; /* done */ | |
1840 | } | |
1841 | } | |
1842 | ||
23860348 | 1843 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1844 | use_threadinfo_query = 0; |
1845 | remote_find_new_threads (); | |
1846 | return; | |
1847 | } | |
1848 | ||
802188a7 | 1849 | /* |
9d1f7ab2 MS |
1850 | * Collect a descriptive string about the given thread. |
1851 | * The target may say anything it wants to about the thread | |
1852 | * (typically info about its blocked / runnable state, name, etc.). | |
1853 | * This string will appear in the info threads display. | |
802188a7 | 1854 | * |
9d1f7ab2 MS |
1855 | * Optional: targets are not required to implement this function. |
1856 | */ | |
1857 | ||
1858 | static char * | |
1859 | remote_threads_extra_info (struct thread_info *tp) | |
1860 | { | |
d01949b6 | 1861 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1862 | int result; |
1863 | int set; | |
1864 | threadref id; | |
1865 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1866 | static char display_buf[100]; /* arbitrary... */ |
d01949b6 | 1867 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1868 | int n = 0; /* position in display_buf */ |
1869 | ||
1870 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1871 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1872 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1873 | |
1874 | if (use_threadextra_query) | |
1875 | { | |
39f77062 | 1876 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1877 | putpkt (bufp); |
d01949b6 | 1878 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1879 | if (bufp[0] != 0) |
1880 | { | |
30559e10 MS |
1881 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1882 | result = hex2bin (bufp, display_buf, n); | |
1883 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1884 | return display_buf; |
1885 | } | |
0f71a2f6 | 1886 | } |
9d1f7ab2 MS |
1887 | |
1888 | /* If the above query fails, fall back to the old method. */ | |
1889 | use_threadextra_query = 0; | |
1890 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1891 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1892 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1893 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1894 | if (threadinfo.active) | |
0f71a2f6 | 1895 | { |
9d1f7ab2 MS |
1896 | if (*threadinfo.shortname) |
1897 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1898 | if (*threadinfo.display) | |
1899 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1900 | if (*threadinfo.more_display) | |
1901 | n += sprintf(&display_buf[n], " Priority: %s", | |
1902 | threadinfo.more_display); | |
1903 | ||
1904 | if (n > 0) | |
c5aa993b | 1905 | { |
23860348 | 1906 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1907 | if (',' == display_buf[n-1]) |
1908 | display_buf[n-1] = ' '; | |
1909 | return display_buf; | |
c5aa993b | 1910 | } |
0f71a2f6 | 1911 | } |
9d1f7ab2 | 1912 | return NULL; |
0f71a2f6 | 1913 | } |
9d1f7ab2 | 1914 | |
c906108c | 1915 | \f |
c5aa993b | 1916 | |
c906108c SS |
1917 | /* Restart the remote side; this is an extended protocol operation. */ |
1918 | ||
1919 | static void | |
fba45db2 | 1920 | extended_remote_restart (void) |
c906108c | 1921 | { |
d01949b6 AC |
1922 | struct remote_state *rs = get_remote_state (); |
1923 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1924 | |
1925 | /* Send the restart command; for reasons I don't understand the | |
1926 | remote side really expects a number after the "R". */ | |
1927 | buf[0] = 'R'; | |
1928 | sprintf (&buf[1], "%x", 0); | |
1929 | putpkt (buf); | |
1930 | ||
1931 | /* Now query for status so this looks just like we restarted | |
1932 | gdbserver from scratch. */ | |
1933 | putpkt ("?"); | |
d01949b6 | 1934 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1935 | } |
1936 | \f | |
1937 | /* Clean up connection to a remote debugger. */ | |
1938 | ||
c906108c | 1939 | static void |
fba45db2 | 1940 | remote_close (int quitting) |
c906108c SS |
1941 | { |
1942 | if (remote_desc) | |
2cd58942 | 1943 | serial_close (remote_desc); |
c906108c SS |
1944 | remote_desc = NULL; |
1945 | } | |
1946 | ||
23860348 | 1947 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1948 | |
1949 | static void | |
fba45db2 | 1950 | get_offsets (void) |
c906108c | 1951 | { |
d01949b6 AC |
1952 | struct remote_state *rs = get_remote_state (); |
1953 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1954 | char *ptr; |
c906108c SS |
1955 | int lose; |
1956 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1957 | struct section_offsets *offs; | |
1958 | ||
1959 | putpkt ("qOffsets"); | |
1960 | ||
d01949b6 | 1961 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1962 | |
1963 | if (buf[0] == '\000') | |
1964 | return; /* Return silently. Stub doesn't support | |
23860348 | 1965 | this command. */ |
c906108c SS |
1966 | if (buf[0] == 'E') |
1967 | { | |
8a3fe4f8 | 1968 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1969 | return; |
1970 | } | |
1971 | ||
1972 | /* Pick up each field in turn. This used to be done with scanf, but | |
1973 | scanf will make trouble if CORE_ADDR size doesn't match | |
1974 | conversion directives correctly. The following code will work | |
1975 | with any size of CORE_ADDR. */ | |
1976 | text_addr = data_addr = bss_addr = 0; | |
1977 | ptr = buf; | |
1978 | lose = 0; | |
1979 | ||
1980 | if (strncmp (ptr, "Text=", 5) == 0) | |
1981 | { | |
1982 | ptr += 5; | |
1983 | /* Don't use strtol, could lose on big values. */ | |
1984 | while (*ptr && *ptr != ';') | |
1985 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1986 | } | |
1987 | else | |
1988 | lose = 1; | |
1989 | ||
1990 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1991 | { | |
1992 | ptr += 6; | |
1993 | while (*ptr && *ptr != ';') | |
1994 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1995 | } | |
1996 | else | |
1997 | lose = 1; | |
1998 | ||
1999 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2000 | { | |
2001 | ptr += 5; | |
2002 | while (*ptr && *ptr != ';') | |
2003 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
2004 | } | |
2005 | else | |
2006 | lose = 1; | |
2007 | ||
2008 | if (lose) | |
8a3fe4f8 | 2009 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
2010 | |
2011 | if (symfile_objfile == NULL) | |
2012 | return; | |
2013 | ||
802188a7 | 2014 | offs = ((struct section_offsets *) |
a39a16c4 | 2015 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2016 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2017 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2018 | |
a4c8257b | 2019 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
2020 | |
2021 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2022 | because that's what nlmconv does now. The real solution requires changes | |
2023 | to the stub and remote.c that I don't have time to do right now. */ | |
2024 | ||
a4c8257b EZ |
2025 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
2026 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
2027 | |
2028 | objfile_relocate (symfile_objfile, offs); | |
2029 | } | |
2030 | ||
2031 | /* Stub for catch_errors. */ | |
2032 | ||
0f71a2f6 | 2033 | static int |
36918e70 | 2034 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 2035 | { |
23860348 | 2036 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
2037 | /* NOTE: Return something >=0. A -ve value is reserved for |
2038 | catch_exceptions. */ | |
0f71a2f6 JM |
2039 | return 1; |
2040 | } | |
2041 | ||
9cbc821d | 2042 | static void |
36918e70 | 2043 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 2044 | { |
23860348 | 2045 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2046 | |
2047 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2048 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2049 | |
2050 | /* Let the stub know that we want it to return the thread. */ | |
2051 | set_thread (-1, 0); | |
2052 | ||
39f77062 | 2053 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2054 | |
23860348 | 2055 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2056 | |
23860348 | 2057 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2058 | immediate_quit--; |
c906108c | 2059 | |
9cbc821d | 2060 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
2061 | } |
2062 | ||
2063 | /* Open a connection to a remote debugger. | |
2064 | NAME is the filename used for communication. */ | |
2065 | ||
2066 | static void | |
fba45db2 | 2067 | remote_open (char *name, int from_tty) |
c906108c | 2068 | { |
92d1e331 | 2069 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2070 | } |
2071 | ||
23860348 | 2072 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2073 | static void |
fba45db2 | 2074 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2075 | { |
92d1e331 | 2076 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2077 | } |
2078 | ||
c906108c SS |
2079 | /* Open a connection to a remote debugger using the extended |
2080 | remote gdb protocol. NAME is the filename used for communication. */ | |
2081 | ||
2082 | static void | |
fba45db2 | 2083 | extended_remote_open (char *name, int from_tty) |
c906108c | 2084 | { |
92d1e331 DJ |
2085 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2086 | 0 /* async_p */); | |
c906108c SS |
2087 | } |
2088 | ||
23860348 | 2089 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2090 | static void |
fba45db2 | 2091 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2092 | { |
92d1e331 DJ |
2093 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2094 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2095 | } |
2096 | ||
c906108c SS |
2097 | /* Generic code for opening a connection to a remote target. */ |
2098 | ||
d471ea57 AC |
2099 | static void |
2100 | init_all_packet_configs (void) | |
2101 | { | |
2102 | int i; | |
2103 | update_packet_config (&remote_protocol_P); | |
b96ec7ac | 2104 | update_packet_config (&remote_protocol_p); |
dc8acb97 | 2105 | update_packet_config (&remote_protocol_qSymbol); |
506fb367 | 2106 | update_packet_config (&remote_protocol_vcont); |
d471ea57 AC |
2107 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2108 | update_packet_config (&remote_protocol_Z[i]); | |
2109 | /* Force remote_write_bytes to check whether target supports binary | |
23860348 | 2110 | downloading. */ |
d471ea57 | 2111 | update_packet_config (&remote_protocol_binary_download); |
802188a7 | 2112 | update_packet_config (&remote_protocol_qPart_auxv); |
d471ea57 AC |
2113 | } |
2114 | ||
23860348 | 2115 | /* Symbol look-up. */ |
dc8acb97 MS |
2116 | |
2117 | static void | |
2118 | remote_check_symbols (struct objfile *objfile) | |
2119 | { | |
d01949b6 | 2120 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2121 | char *msg, *reply, *tmp; |
2122 | struct minimal_symbol *sym; | |
2123 | int end; | |
2124 | ||
2125 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2126 | return; | |
2127 | ||
d01949b6 AC |
2128 | msg = alloca (rs->remote_packet_size); |
2129 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 | 2130 | |
23860348 | 2131 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2132 | |
2133 | putpkt ("qSymbol::"); | |
d01949b6 | 2134 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2135 | packet_ok (reply, &remote_protocol_qSymbol); |
2136 | ||
2137 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2138 | { | |
2139 | tmp = &reply[8]; | |
2140 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2141 | msg[end] = '\0'; | |
2142 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2143 | if (sym == NULL) | |
2144 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2145 | else | |
802188a7 | 2146 | sprintf (msg, "qSymbol:%s:%s", |
dc8acb97 MS |
2147 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2148 | &reply[8]); | |
2149 | putpkt (msg); | |
d01949b6 | 2150 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2151 | } |
2152 | } | |
2153 | ||
9db8d71f DJ |
2154 | static struct serial * |
2155 | remote_serial_open (char *name) | |
2156 | { | |
2157 | static int udp_warning = 0; | |
2158 | ||
2159 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2160 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2161 | serial connection is reliable and not the serial connection promising | |
2162 | to be. */ | |
2163 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2164 | { | |
8a3fe4f8 AC |
2165 | warning (_("\ |
2166 | The remote protocol may be unreliable over UDP.\n\ | |
2167 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2168 | udp_warning = 1; |
2169 | } | |
2170 | ||
2171 | return serial_open (name); | |
2172 | } | |
2173 | ||
c906108c | 2174 | static void |
fba45db2 | 2175 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2176 | int extended_p, int async_p) |
c906108c | 2177 | { |
9cbc821d | 2178 | struct exception ex; |
d01949b6 | 2179 | struct remote_state *rs = get_remote_state (); |
c906108c | 2180 | if (name == 0) |
8a3fe4f8 | 2181 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2182 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2183 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2184 | |
23860348 | 2185 | /* See FIXME above. */ |
92d1e331 DJ |
2186 | if (!async_p) |
2187 | wait_forever_enabled_p = 1; | |
6426a772 | 2188 | |
00cac895 DJ |
2189 | reopen_exec_file (); |
2190 | reread_symbols (); | |
2191 | ||
c906108c SS |
2192 | target_preopen (from_tty); |
2193 | ||
2194 | unpush_target (target); | |
2195 | ||
9db8d71f | 2196 | remote_desc = remote_serial_open (name); |
c906108c SS |
2197 | if (!remote_desc) |
2198 | perror_with_name (name); | |
2199 | ||
2200 | if (baud_rate != -1) | |
2201 | { | |
2cd58942 | 2202 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2203 | { |
9b74d5d3 KB |
2204 | /* The requested speed could not be set. Error out to |
2205 | top level after closing remote_desc. Take care to | |
2206 | set remote_desc to NULL to avoid closing remote_desc | |
2207 | more than once. */ | |
2cd58942 | 2208 | serial_close (remote_desc); |
9b74d5d3 | 2209 | remote_desc = NULL; |
c906108c SS |
2210 | perror_with_name (name); |
2211 | } | |
2212 | } | |
2213 | ||
2cd58942 | 2214 | serial_raw (remote_desc); |
c906108c SS |
2215 | |
2216 | /* If there is something sitting in the buffer we might take it as a | |
2217 | response to a command, which would be bad. */ | |
2cd58942 | 2218 | serial_flush_input (remote_desc); |
c906108c SS |
2219 | |
2220 | if (from_tty) | |
2221 | { | |
2222 | puts_filtered ("Remote debugging using "); | |
2223 | puts_filtered (name); | |
2224 | puts_filtered ("\n"); | |
2225 | } | |
23860348 | 2226 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2227 | |
d471ea57 | 2228 | init_all_packet_configs (); |
802188a7 | 2229 | |
c5aa993b | 2230 | general_thread = -2; |
cce74817 | 2231 | continue_thread = -2; |
c906108c | 2232 | |
9d1f7ab2 MS |
2233 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2234 | use_threadinfo_query = 1; | |
2235 | use_threadextra_query = 1; | |
2236 | ||
c906108c SS |
2237 | /* Without this, some commands which require an active target (such |
2238 | as kill) won't work. This variable serves (at least) double duty | |
2239 | as both the pid of the target process (if it has such), and as a | |
2240 | flag indicating that a target is active. These functions should | |
2241 | be split out into seperate variables, especially since GDB will | |
2242 | someday have a notion of debugging several processes. */ | |
2243 | ||
39f77062 | 2244 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2245 | |
2246 | if (async_p) | |
2247 | { | |
23860348 | 2248 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2249 | remote_async_terminal_ours_p = 1; |
2250 | ||
2251 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2252 | assumed that the target is already ready and able to respond to | |
2253 | requests. Unfortunately remote_start_remote() eventually calls | |
2254 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2255 | around this. Eventually a mechanism that allows | |
2256 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2257 | implemented. */ |
92d1e331 DJ |
2258 | wait_forever_enabled_p = 0; |
2259 | } | |
2260 | ||
f78f6cf1 | 2261 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
23860348 | 2262 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 MS |
2263 | no_shared_libraries (NULL, 0); |
2264 | #endif | |
2265 | ||
36918e70 | 2266 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2267 | target (we'd otherwise be in an inconsistent state) and then |
2268 | propogate the error on up the exception chain. This ensures that | |
2269 | the caller doesn't stumble along blindly assuming that the | |
2270 | function succeeded. The CLI doesn't have this problem but other | |
2271 | UI's, such as MI do. | |
36918e70 AC |
2272 | |
2273 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2274 | this function should return an error indication letting the | |
ce2826aa | 2275 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2276 | ``target remote'' is directly wired to this function making that |
2277 | impossible. On a positive note, the CLI side of this problem has | |
2278 | been fixed - the function set_cmd_context() makes it possible for | |
2279 | all the ``target ....'' commands to share a common callback | |
2280 | function. See cli-dump.c. */ | |
9cbc821d | 2281 | ex = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); |
9cbc821d | 2282 | if (ex.reason < 0) |
c906108c SS |
2283 | { |
2284 | pop_target (); | |
92d1e331 DJ |
2285 | if (async_p) |
2286 | wait_forever_enabled_p = 1; | |
9ee907e0 | 2287 | throw_exception (ex); |
c906108c SS |
2288 | } |
2289 | ||
92d1e331 DJ |
2290 | if (async_p) |
2291 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2292 | |
2293 | if (extended_p) | |
43ff13b4 | 2294 | { |
6240bebf | 2295 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2296 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2297 | putpkt ("!"); |
d01949b6 | 2298 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2299 | } |
f78f6cf1 | 2300 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
802188a7 RM |
2301 | /* FIXME: need a master target_open vector from which all |
2302 | remote_opens can be called, so that stuff like this can | |
6240bebf | 2303 | go there. Failing that, the following code must be copied |
802188a7 | 2304 | to the open function for any remote target that wants to |
6240bebf | 2305 | support svr4 shared libraries. */ |
f78f6cf1 | 2306 | |
23860348 MS |
2307 | /* Set up to detect and load shared libraries. */ |
2308 | if (exec_bfd) /* No use without an exec file. */ | |
dc8acb97 MS |
2309 | { |
2310 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2311 | remote_check_symbols (symfile_objfile); | |
2312 | } | |
6240bebf | 2313 | #endif |
43ff13b4 JM |
2314 | } |
2315 | ||
c906108c SS |
2316 | /* This takes a program previously attached to and detaches it. After |
2317 | this is done, GDB can be used to debug some other program. We | |
2318 | better not have left any breakpoints in the target program or it'll | |
2319 | die when it hits one. */ | |
2320 | ||
2321 | static void | |
fba45db2 | 2322 | remote_detach (char *args, int from_tty) |
c906108c | 2323 | { |
d01949b6 AC |
2324 | struct remote_state *rs = get_remote_state (); |
2325 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2326 | |
2327 | if (args) | |
8a3fe4f8 | 2328 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2329 | |
2330 | /* Tell the remote target to detach. */ | |
2331 | strcpy (buf, "D"); | |
d01949b6 | 2332 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2333 | |
23860348 | 2334 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2335 | if (target_is_async_p ()) |
2336 | serial_async (remote_desc, NULL, 0); | |
2337 | ||
cca728d0 | 2338 | target_mourn_inferior (); |
c906108c SS |
2339 | if (from_tty) |
2340 | puts_filtered ("Ending remote debugging.\n"); | |
2341 | } | |
2342 | ||
6ad8ae5c DJ |
2343 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2344 | ||
43ff13b4 | 2345 | static void |
6ad8ae5c | 2346 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2347 | { |
d01949b6 AC |
2348 | struct remote_state *rs = get_remote_state (); |
2349 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2350 | |
2351 | if (args) | |
8a3fe4f8 | 2352 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2353 | |
23860348 | 2354 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2355 | if (target_is_async_p ()) |
2cd58942 | 2356 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2357 | |
cca728d0 | 2358 | target_mourn_inferior (); |
43ff13b4 JM |
2359 | if (from_tty) |
2360 | puts_filtered ("Ending remote debugging.\n"); | |
2361 | } | |
2362 | ||
c906108c SS |
2363 | /* Convert hex digit A to a number. */ |
2364 | ||
30559e10 | 2365 | static int |
fba45db2 | 2366 | fromhex (int a) |
c906108c SS |
2367 | { |
2368 | if (a >= '0' && a <= '9') | |
2369 | return a - '0'; | |
2370 | else if (a >= 'a' && a <= 'f') | |
2371 | return a - 'a' + 10; | |
2372 | else if (a >= 'A' && a <= 'F') | |
2373 | return a - 'A' + 10; | |
c5aa993b | 2374 | else |
8a3fe4f8 | 2375 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2376 | } |
2377 | ||
30559e10 MS |
2378 | static int |
2379 | hex2bin (const char *hex, char *bin, int count) | |
2380 | { | |
2381 | int i; | |
2382 | ||
30559e10 MS |
2383 | for (i = 0; i < count; i++) |
2384 | { | |
2385 | if (hex[0] == 0 || hex[1] == 0) | |
2386 | { | |
2387 | /* Hex string is short, or of uneven length. | |
23860348 | 2388 | Return the count that has been converted so far. */ |
30559e10 MS |
2389 | return i; |
2390 | } | |
2391 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2392 | hex += 2; | |
2393 | } | |
2394 | return i; | |
2395 | } | |
2396 | ||
c906108c SS |
2397 | /* Convert number NIB to a hex digit. */ |
2398 | ||
2399 | static int | |
fba45db2 | 2400 | tohex (int nib) |
c906108c SS |
2401 | { |
2402 | if (nib < 10) | |
c5aa993b | 2403 | return '0' + nib; |
c906108c | 2404 | else |
c5aa993b | 2405 | return 'a' + nib - 10; |
c906108c | 2406 | } |
30559e10 MS |
2407 | |
2408 | static int | |
234fa6d1 | 2409 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2410 | { |
2411 | int i; | |
23860348 | 2412 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 MS |
2413 | if (count == 0) |
2414 | count = strlen (bin); | |
2415 | ||
2416 | for (i = 0; i < count; i++) | |
2417 | { | |
2418 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2419 | *hex++ = tohex (*bin++ & 0xf); | |
2420 | } | |
2421 | *hex = 0; | |
2422 | return i; | |
2423 | } | |
c906108c | 2424 | \f |
506fb367 DJ |
2425 | /* Check for the availability of vCont. This function should also check |
2426 | the response. */ | |
c906108c SS |
2427 | |
2428 | static void | |
506fb367 | 2429 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2430 | { |
506fb367 DJ |
2431 | strcpy (buf, "vCont?"); |
2432 | putpkt (buf); | |
2433 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2434 | |
506fb367 DJ |
2435 | /* Make sure that the features we assume are supported. */ |
2436 | if (strncmp (buf, "vCont", 5) == 0) | |
2437 | { | |
2438 | char *p = &buf[5]; | |
2439 | int support_s, support_S, support_c, support_C; | |
2440 | ||
2441 | support_s = 0; | |
2442 | support_S = 0; | |
2443 | support_c = 0; | |
2444 | support_C = 0; | |
2445 | while (p && *p == ';') | |
2446 | { | |
2447 | p++; | |
2448 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2449 | support_s = 1; | |
2450 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2451 | support_S = 1; | |
2452 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2453 | support_c = 1; | |
2454 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2455 | support_C = 1; | |
2456 | ||
2457 | p = strchr (p, ';'); | |
2458 | } | |
c906108c | 2459 | |
506fb367 DJ |
2460 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2461 | BUF will make packet_ok disable the packet. */ | |
2462 | if (!support_s || !support_S || !support_c || !support_C) | |
2463 | buf[0] = 0; | |
2464 | } | |
c906108c | 2465 | |
506fb367 DJ |
2466 | packet_ok (buf, &remote_protocol_vcont); |
2467 | } | |
c906108c | 2468 | |
506fb367 DJ |
2469 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2470 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2471 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2472 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2473 | signalled is given in the global INFERIOR_PTID. This function returns | |
2474 | non-zero iff it resumes the inferior. | |
44eaed12 | 2475 | |
506fb367 DJ |
2476 | This function issues a strict subset of all possible vCont commands at the |
2477 | moment. */ | |
44eaed12 | 2478 | |
506fb367 DJ |
2479 | static int |
2480 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2481 | { | |
2482 | struct remote_state *rs = get_remote_state (); | |
2483 | int pid = PIDGET (ptid); | |
2963ee1d | 2484 | char *buf = NULL, *outbuf; |
506fb367 | 2485 | struct cleanup *old_cleanup; |
44eaed12 | 2486 | |
506fb367 DJ |
2487 | buf = xmalloc (rs->remote_packet_size); |
2488 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2489 | |
506fb367 DJ |
2490 | if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN) |
2491 | remote_vcont_probe (rs, buf); | |
44eaed12 | 2492 | |
506fb367 DJ |
2493 | if (remote_protocol_vcont.support == PACKET_DISABLE) |
2494 | { | |
2495 | do_cleanups (old_cleanup); | |
2496 | return 0; | |
44eaed12 C |
2497 | } |
2498 | ||
506fb367 DJ |
2499 | /* If we could generate a wider range of packets, we'd have to worry |
2500 | about overflowing BUF. Should there be a generic | |
2501 | "multi-part-packet" packet? */ | |
2502 | ||
2503 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2504 | { |
506fb367 DJ |
2505 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2506 | don't have any PID numbers the inferior will understand. Make sure | |
2507 | to only send forms that do not specify a PID. */ | |
2508 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2509 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2510 | else if (step) |
2963ee1d | 2511 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2512 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2513 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2514 | else |
2963ee1d | 2515 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2516 | } |
2517 | else if (pid == -1) | |
2518 | { | |
2519 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2520 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2521 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2522 | PIDGET (inferior_ptid)); | |
506fb367 | 2523 | else if (step) |
2963ee1d | 2524 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2525 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2526 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2527 | PIDGET (inferior_ptid)); | |
506fb367 | 2528 | else |
2963ee1d | 2529 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2530 | } |
2531 | else | |
506fb367 DJ |
2532 | { |
2533 | /* Scheduler locking; resume only PTID. */ | |
2534 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2535 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2536 | else if (step) |
2963ee1d | 2537 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2538 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2539 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2540 | else |
2963ee1d | 2541 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2542 | } |
c906108c | 2543 | |
2963ee1d DJ |
2544 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
2545 | make_cleanup (xfree, outbuf); | |
2546 | ||
2547 | putpkt (outbuf); | |
506fb367 DJ |
2548 | |
2549 | do_cleanups (old_cleanup); | |
2550 | ||
2551 | return 1; | |
c906108c | 2552 | } |
43ff13b4 | 2553 | |
506fb367 DJ |
2554 | /* Tell the remote machine to resume. */ |
2555 | ||
2556 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2557 | ||
2558 | static int last_sent_step; | |
2559 | ||
43ff13b4 | 2560 | static void |
506fb367 | 2561 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2562 | { |
d01949b6 AC |
2563 | struct remote_state *rs = get_remote_state (); |
2564 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2565 | int pid = PIDGET (ptid); |
44eaed12 | 2566 | char *p; |
43ff13b4 | 2567 | |
43ff13b4 JM |
2568 | last_sent_signal = siggnal; |
2569 | last_sent_step = step; | |
2570 | ||
2571 | /* A hook for when we need to do something at the last moment before | |
2572 | resumption. */ | |
9a4105ab AC |
2573 | if (deprecated_target_resume_hook) |
2574 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2575 | |
506fb367 DJ |
2576 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2577 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2578 | return; | |
2579 | ||
2580 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2581 | if (pid == -1) | |
23860348 | 2582 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2583 | else |
23860348 | 2584 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2585 | |
43ff13b4 JM |
2586 | if (siggnal != TARGET_SIGNAL_0) |
2587 | { | |
2588 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2589 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2590 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2591 | buf[3] = '\0'; |
2592 | } | |
2593 | else | |
c5aa993b | 2594 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2595 | |
44eaed12 | 2596 | putpkt (buf); |
506fb367 DJ |
2597 | } |
2598 | ||
23860348 | 2599 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2600 | static void |
2601 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2602 | { | |
2603 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2604 | |
2acceee2 JM |
2605 | /* We are about to start executing the inferior, let's register it |
2606 | with the event loop. NOTE: this is the one place where all the | |
2607 | execution commands end up. We could alternatively do this in each | |
23860348 | 2608 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2609 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2610 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2611 | NOT asynchronously. */ |
362646f5 | 2612 | if (target_can_async_p ()) |
2acceee2 | 2613 | target_async (inferior_event_handler, 0); |
23860348 | 2614 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2615 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2616 | this? Instead, should the client of target just assume (for | |
2617 | async targets) that the target is going to start executing? Is | |
2618 | this information already found in the continuation block? */ | |
ed9a39eb | 2619 | if (target_is_async_p ()) |
2acceee2 | 2620 | target_executing = 1; |
43ff13b4 | 2621 | } |
c906108c | 2622 | \f |
43ff13b4 JM |
2623 | |
2624 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2625 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2626 | static void |
fba45db2 | 2627 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2628 | { |
c5aa993b | 2629 | sigint_remote_token = |
43ff13b4 JM |
2630 | create_async_signal_handler (async_remote_interrupt, NULL); |
2631 | signal (SIGINT, handle_remote_sigint); | |
2632 | } | |
2633 | ||
23860348 | 2634 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2635 | static void |
fba45db2 | 2636 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2637 | { |
2638 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2639 | sigint_remote_twice_token = |
43ff13b4 JM |
2640 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2641 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2642 | } | |
2643 | ||
2644 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2645 | sent once. It will take effect the second time that the user sends | |
23860348 | 2646 | a ^C. */ |
43ff13b4 | 2647 | static void |
fba45db2 | 2648 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2649 | { |
2650 | signal (sig, handle_sigint); | |
c5aa993b | 2651 | sigint_remote_twice_token = |
2df3850c | 2652 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2653 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2654 | } | |
2655 | ||
6426a772 | 2656 | /* Perform the real interruption of the target execution, in response |
23860348 | 2657 | to a ^C. */ |
c5aa993b | 2658 | static void |
fba45db2 | 2659 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2660 | { |
2661 | if (remote_debug) | |
2662 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2663 | ||
2664 | target_stop (); | |
2665 | } | |
2666 | ||
2667 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2668 | up on the target alltogether. */ |
2df3850c | 2669 | void |
fba45db2 | 2670 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2671 | { |
2df3850c JM |
2672 | if (remote_debug) |
2673 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2674 | /* Do something only if the target was not killed by the previous |
23860348 | 2675 | cntl-C. */ |
6426a772 JM |
2676 | if (target_executing) |
2677 | { | |
2678 | interrupt_query (); | |
2679 | signal (SIGINT, handle_remote_sigint); | |
2680 | } | |
43ff13b4 JM |
2681 | } |
2682 | ||
2683 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2684 | stopped. */ |
6426a772 JM |
2685 | static void |
2686 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2687 | { |
2688 | signal (SIGINT, handle_sigint); | |
2689 | if (sigint_remote_twice_token) | |
23860348 MS |
2690 | delete_async_signal_handler ((struct async_signal_handler **) |
2691 | &sigint_remote_twice_token); | |
43ff13b4 | 2692 | if (sigint_remote_token) |
23860348 MS |
2693 | delete_async_signal_handler ((struct async_signal_handler **) |
2694 | &sigint_remote_token); | |
43ff13b4 JM |
2695 | } |
2696 | ||
c906108c SS |
2697 | /* Send ^C to target to halt it. Target will respond, and send us a |
2698 | packet. */ | |
507f3c78 | 2699 | static void (*ofunc) (int); |
c906108c | 2700 | |
7a292a7a SS |
2701 | /* The command line interface's stop routine. This function is installed |
2702 | as a signal handler for SIGINT. The first time a user requests a | |
2703 | stop, we call remote_stop to send a break or ^C. If there is no | |
2704 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2705 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2706 | static void |
fba45db2 | 2707 | remote_interrupt (int signo) |
c906108c | 2708 | { |
23860348 | 2709 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2710 | signal (signo, remote_interrupt_twice); |
2711 | ||
2712 | if (remote_debug) | |
0f71a2f6 | 2713 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2714 | |
2715 | target_stop (); | |
2716 | } | |
2717 | ||
2718 | /* The user typed ^C twice. */ | |
2719 | ||
2720 | static void | |
fba45db2 | 2721 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2722 | { |
2723 | signal (signo, ofunc); | |
2724 | interrupt_query (); | |
c906108c SS |
2725 | signal (signo, remote_interrupt); |
2726 | } | |
7a292a7a SS |
2727 | |
2728 | /* This is the generic stop called via the target vector. When a target | |
2729 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2730 | will eventually end up here. */ |
c906108c | 2731 | static void |
fba45db2 | 2732 | remote_stop (void) |
c906108c | 2733 | { |
7a292a7a SS |
2734 | /* Send a break or a ^C, depending on user preference. */ |
2735 | if (remote_debug) | |
0f71a2f6 | 2736 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2737 | |
7a292a7a | 2738 | if (remote_break) |
2cd58942 | 2739 | serial_send_break (remote_desc); |
c906108c | 2740 | else |
2cd58942 | 2741 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2742 | } |
2743 | ||
2744 | /* Ask the user what to do when an interrupt is received. */ | |
2745 | ||
2746 | static void | |
fba45db2 | 2747 | interrupt_query (void) |
c906108c SS |
2748 | { |
2749 | target_terminal_ours (); | |
2750 | ||
2751 | if (query ("Interrupted while waiting for the program.\n\ | |
2752 | Give up (and stop debugging it)? ")) | |
2753 | { | |
2754 | target_mourn_inferior (); | |
315a522e | 2755 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2756 | } |
2757 | ||
2758 | target_terminal_inferior (); | |
2759 | } | |
2760 | ||
6426a772 JM |
2761 | /* Enable/disable target terminal ownership. Most targets can use |
2762 | terminal groups to control terminal ownership. Remote targets are | |
2763 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2764 | is required. */ |
6426a772 JM |
2765 | |
2766 | static void | |
2767 | remote_async_terminal_inferior (void) | |
2768 | { | |
2769 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2770 | sync_execution here. This function should only be called when | |
2771 | GDB is resuming the inferior in the forground. A background | |
2772 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2773 | consequently should not call this code. */ |
6426a772 JM |
2774 | if (!sync_execution) |
2775 | return; | |
2776 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2777 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2778 | to an asynchronous target with a synchronous command calls this | |
2779 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2780 | stops trying to transfer the terminal to the target when it | |
2781 | shouldn't this guard can go away. */ | |
2782 | if (!remote_async_terminal_ours_p) | |
2783 | return; | |
2784 | delete_file_handler (input_fd); | |
2785 | remote_async_terminal_ours_p = 0; | |
2786 | initialize_sigint_signal_handler (); | |
2787 | /* NOTE: At this point we could also register our selves as the | |
2788 | recipient of all input. Any characters typed could then be | |
23860348 | 2789 | passed on down to the target. */ |
6426a772 JM |
2790 | } |
2791 | ||
2792 | static void | |
2793 | remote_async_terminal_ours (void) | |
2794 | { | |
23860348 | 2795 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2796 | if (!sync_execution) |
2797 | return; | |
23860348 | 2798 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2799 | if (remote_async_terminal_ours_p) |
2800 | return; | |
2801 | cleanup_sigint_signal_handler (NULL); | |
2802 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2803 | remote_async_terminal_ours_p = 1; | |
2804 | } | |
2805 | ||
c906108c SS |
2806 | /* If nonzero, ignore the next kill. */ |
2807 | ||
2808 | int kill_kludge; | |
2809 | ||
2810 | void | |
917317f4 | 2811 | remote_console_output (char *msg) |
c906108c SS |
2812 | { |
2813 | char *p; | |
2814 | ||
c5aa993b | 2815 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2816 | { |
2817 | char tb[2]; | |
2818 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2819 | tb[0] = c; | |
2820 | tb[1] = 0; | |
43ff13b4 | 2821 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2822 | } |
917317f4 | 2823 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2824 | } |
2825 | ||
0f71a2f6 JM |
2826 | /* Wait until the remote machine stops, then return, |
2827 | storing status in STATUS just as `wait' would. | |
802188a7 | 2828 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2829 | remote OS, is the thread-id. */ |
c906108c | 2830 | |
39f77062 KB |
2831 | static ptid_t |
2832 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2833 | { |
d01949b6 AC |
2834 | struct remote_state *rs = get_remote_state (); |
2835 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2836 | ULONGEST thread_num = -1; |
3c3bea1c | 2837 | ULONGEST addr; |
c906108c SS |
2838 | |
2839 | status->kind = TARGET_WAITKIND_EXITED; | |
2840 | status->value.integer = 0; | |
2841 | ||
2842 | while (1) | |
2843 | { | |
2844 | unsigned char *p; | |
2845 | ||
c906108c | 2846 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2847 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2848 | signal (SIGINT, ofunc); |
2849 | ||
2850 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2851 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2852 | if (deprecated_target_wait_loop_hook) |
2853 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2854 | |
3c3bea1c GS |
2855 | remote_stopped_by_watchpoint_p = 0; |
2856 | ||
c906108c SS |
2857 | switch (buf[0]) |
2858 | { | |
23860348 | 2859 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2860 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 2861 | continue; |
23860348 | 2862 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2863 | remote_fileio_request (buf); |
2864 | continue; | |
23860348 | 2865 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c SS |
2866 | { |
2867 | int i; | |
d9d9c31f | 2868 | char regs[MAX_REGISTER_SIZE]; |
c906108c | 2869 | |
23860348 | 2870 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 2871 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2872 | ss = signal number |
2873 | n... = register number | |
2874 | r... = register contents | |
2875 | */ | |
c906108c SS |
2876 | p = &buf[3]; /* after Txx */ |
2877 | ||
2878 | while (*p) | |
2879 | { | |
2880 | unsigned char *p1; | |
2881 | char *p_temp; | |
97345198 | 2882 | int fieldsize; |
3c3bea1c GS |
2883 | LONGEST pnum = 0; |
2884 | ||
23860348 MS |
2885 | /* If the packet contains a register number save it in |
2886 | pnum and set p1 to point to the character following | |
2887 | it. Otherwise p1 points to p. */ | |
c906108c | 2888 | |
23860348 MS |
2889 | /* If this packet is an awatch packet, don't parse the |
2890 | 'a' as a register number. */ | |
3c3bea1c GS |
2891 | |
2892 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2893 | { | |
2894 | /* Read the ``P'' register number. */ | |
2895 | pnum = strtol (p, &p_temp, 16); | |
2896 | p1 = (unsigned char *) p_temp; | |
2897 | } | |
802188a7 | 2898 | else |
3c3bea1c | 2899 | p1 = p; |
c906108c | 2900 | |
23860348 | 2901 | if (p1 == p) /* No register number present here. */ |
c906108c | 2902 | { |
3c3bea1c | 2903 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c | 2904 | if (p1 == NULL) |
8a3fe4f8 AC |
2905 | warning (_("Malformed packet(a) (missing colon): %s\n\ |
2906 | Packet: '%s'\n"), | |
c906108c | 2907 | p, buf); |
3c3bea1c | 2908 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2909 | { |
2910 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2911 | record_currthread (thread_num); | |
2912 | p = (unsigned char *) p_temp; | |
2913 | } | |
3c3bea1c GS |
2914 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2915 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2916 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2917 | { | |
2918 | remote_stopped_by_watchpoint_p = 1; | |
2919 | p = unpack_varlen_hex (++p1, &addr); | |
2920 | remote_watch_data_address = (CORE_ADDR)addr; | |
2921 | } | |
2922 | else | |
2923 | { | |
2924 | /* Silently skip unknown optional info. */ | |
2925 | p_temp = strchr (p1 + 1, ';'); | |
2926 | if (p_temp) | |
2927 | p = (unsigned char *) p_temp; | |
2928 | } | |
c906108c SS |
2929 | } |
2930 | else | |
2931 | { | |
ad10f812 | 2932 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2933 | p = p1; |
2934 | ||
2935 | if (*p++ != ':') | |
8a3fe4f8 AC |
2936 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2937 | Packet: '%s'\n"), | |
3fcb8548 | 2938 | p, buf); |
c906108c | 2939 | |
ad10f812 | 2940 | if (reg == NULL) |
8a3fe4f8 AC |
2941 | error (_("Remote sent bad register number %s: %s\n\ |
2942 | Packet: '%s'\n"), | |
3fcb8548 | 2943 | phex_nz (pnum, 0), p, buf); |
c906108c | 2944 | |
23860348 MS |
2945 | fieldsize = hex2bin (p, regs, |
2946 | register_size (current_gdbarch, | |
2947 | reg->regnum)); | |
97345198 | 2948 | p += 2 * fieldsize; |
23860348 MS |
2949 | if (fieldsize < register_size (current_gdbarch, |
2950 | reg->regnum)) | |
8a3fe4f8 | 2951 | warning (_("Remote reply is too short: %s"), buf); |
23860348 MS |
2952 | regcache_raw_supply (current_regcache, |
2953 | reg->regnum, regs); | |
c906108c SS |
2954 | } |
2955 | ||
2956 | if (*p++ != ';') | |
8a3fe4f8 | 2957 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 2958 | buf, p); |
c906108c SS |
2959 | } |
2960 | } | |
2961 | /* fall through */ | |
23860348 | 2962 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
2963 | status->kind = TARGET_WAITKIND_STOPPED; |
2964 | status->value.sig = (enum target_signal) | |
2965 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2966 | ||
0f71a2f6 JM |
2967 | if (buf[3] == 'p') |
2968 | { | |
0f71a2f6 JM |
2969 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2970 | record_currthread (thread_num); | |
2971 | } | |
c906108c | 2972 | goto got_status; |
23860348 | 2973 | case 'W': /* Target exited. */ |
c906108c SS |
2974 | { |
2975 | /* The remote process exited. */ | |
2976 | status->kind = TARGET_WAITKIND_EXITED; | |
2977 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2978 | goto got_status; | |
2979 | } | |
2980 | case 'X': | |
2981 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2982 | status->value.sig = (enum target_signal) | |
2983 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2984 | kill_kludge = 1; | |
2985 | ||
2986 | goto got_status; | |
23860348 | 2987 | case 'O': /* Console output. */ |
c906108c SS |
2988 | remote_console_output (buf + 1); |
2989 | continue; | |
2990 | case '\0': | |
2991 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2992 | { | |
2993 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2994 | the remote system doesn't support it. */ |
c906108c SS |
2995 | target_terminal_ours_for_output (); |
2996 | printf_filtered | |
2997 | ("Can't send signals to this remote system. %s not sent.\n", | |
2998 | target_signal_to_name (last_sent_signal)); | |
2999 | last_sent_signal = TARGET_SIGNAL_0; | |
3000 | target_terminal_inferior (); | |
3001 | ||
3002 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3003 | putpkt ((char *) buf); | |
3004 | continue; | |
3005 | } | |
3006 | /* else fallthrough */ | |
3007 | default: | |
8a3fe4f8 | 3008 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3009 | continue; |
3010 | } | |
3011 | } | |
c5aa993b | 3012 | got_status: |
c906108c SS |
3013 | if (thread_num != -1) |
3014 | { | |
39f77062 | 3015 | return pid_to_ptid (thread_num); |
c906108c | 3016 | } |
39f77062 | 3017 | return inferior_ptid; |
c906108c SS |
3018 | } |
3019 | ||
23860348 | 3020 | /* Async version of remote_wait. */ |
39f77062 KB |
3021 | static ptid_t |
3022 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3023 | { |
d01949b6 AC |
3024 | struct remote_state *rs = get_remote_state (); |
3025 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 3026 | ULONGEST thread_num = -1; |
3c3bea1c | 3027 | ULONGEST addr; |
43ff13b4 JM |
3028 | |
3029 | status->kind = TARGET_WAITKIND_EXITED; | |
3030 | status->value.integer = 0; | |
3031 | ||
3c3bea1c GS |
3032 | remote_stopped_by_watchpoint_p = 0; |
3033 | ||
43ff13b4 JM |
3034 | while (1) |
3035 | { | |
3036 | unsigned char *p; | |
c5aa993b | 3037 | |
ed9a39eb | 3038 | if (!target_is_async_p ()) |
43ff13b4 | 3039 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3040 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3041 | _never_ wait for ever -> test on target_is_async_p(). | |
3042 | However, before we do that we need to ensure that the caller | |
23860348 | 3043 | knows how to take the target into/out of async mode. */ |
d01949b6 | 3044 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3045 | if (!target_is_async_p ()) |
43ff13b4 JM |
3046 | signal (SIGINT, ofunc); |
3047 | ||
3048 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3049 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3050 | if (deprecated_target_wait_loop_hook) |
3051 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3052 | |
3053 | switch (buf[0]) | |
3054 | { | |
23860348 | 3055 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3056 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3057 | continue; |
23860348 | 3058 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3059 | remote_fileio_request (buf); |
3060 | continue; | |
23860348 | 3061 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 JM |
3062 | { |
3063 | int i; | |
d9d9c31f | 3064 | char regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3065 | |
23860348 | 3066 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3067 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3068 | ss = signal number |
3069 | n... = register number | |
3070 | r... = register contents | |
3071 | */ | |
43ff13b4 JM |
3072 | p = &buf[3]; /* after Txx */ |
3073 | ||
3074 | while (*p) | |
3075 | { | |
3076 | unsigned char *p1; | |
3077 | char *p_temp; | |
6c3f2dbf | 3078 | int fieldsize; |
3c3bea1c | 3079 | long pnum = 0; |
43ff13b4 | 3080 | |
23860348 MS |
3081 | /* If the packet contains a register number, save it |
3082 | in pnum and set p1 to point to the character | |
3083 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3084 | |
3085 | /* If this packet is an awatch packet, don't parse the 'a' | |
3086 | as a register number. */ | |
802188a7 | 3087 | |
3c3bea1c GS |
3088 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3089 | { | |
3090 | /* Read the register number. */ | |
3091 | pnum = strtol (p, &p_temp, 16); | |
3092 | p1 = (unsigned char *) p_temp; | |
3093 | } | |
802188a7 | 3094 | else |
3c3bea1c | 3095 | p1 = p; |
43ff13b4 | 3096 | |
23860348 | 3097 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3098 | { |
3c3bea1c | 3099 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 | 3100 | if (p1 == NULL) |
8a3fe4f8 AC |
3101 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3102 | Packet: '%s'\n"), | |
3fcb8548 | 3103 | p, buf); |
3c3bea1c | 3104 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3105 | { |
3106 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3107 | record_currthread (thread_num); | |
3108 | p = (unsigned char *) p_temp; | |
3109 | } | |
3c3bea1c GS |
3110 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3111 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3112 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3113 | { | |
3114 | remote_stopped_by_watchpoint_p = 1; | |
3115 | p = unpack_varlen_hex (++p1, &addr); | |
3116 | remote_watch_data_address = (CORE_ADDR)addr; | |
3117 | } | |
3118 | else | |
3119 | { | |
3120 | /* Silently skip unknown optional info. */ | |
3121 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3122 | if (p_temp) | |
3123 | p = p_temp; | |
3124 | } | |
43ff13b4 | 3125 | } |
802188a7 | 3126 | |
43ff13b4 JM |
3127 | else |
3128 | { | |
ad10f812 | 3129 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3130 | p = p1; |
43ff13b4 | 3131 | if (*p++ != ':') |
8a3fe4f8 AC |
3132 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3133 | Packet: '%s'\n"), | |
3fcb8548 | 3134 | p, buf); |
43ff13b4 | 3135 | |
ad10f812 | 3136 | if (reg == NULL) |
8a3fe4f8 AC |
3137 | error (_("Remote sent bad register number %ld: %s\n\ |
3138 | Packet: '%s'\n"), | |
3fcb8548 | 3139 | pnum, p, buf); |
43ff13b4 | 3140 | |
23860348 MS |
3141 | fieldsize = hex2bin (p, regs, |
3142 | register_size (current_gdbarch, | |
3143 | reg->regnum)); | |
6c3f2dbf | 3144 | p += 2 * fieldsize; |
23860348 MS |
3145 | if (fieldsize < register_size (current_gdbarch, |
3146 | reg->regnum)) | |
8a3fe4f8 | 3147 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 3148 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3149 | } |
3150 | ||
3151 | if (*p++ != ';') | |
8a3fe4f8 | 3152 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3153 | buf, p); |
43ff13b4 JM |
3154 | } |
3155 | } | |
3156 | /* fall through */ | |
23860348 | 3157 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3158 | status->kind = TARGET_WAITKIND_STOPPED; |
3159 | status->value.sig = (enum target_signal) | |
3160 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3161 | ||
3162 | if (buf[3] == 'p') | |
3163 | { | |
43ff13b4 JM |
3164 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3165 | record_currthread (thread_num); | |
3166 | } | |
43ff13b4 | 3167 | goto got_status; |
23860348 | 3168 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3169 | { |
3170 | /* The remote process exited. */ | |
3171 | status->kind = TARGET_WAITKIND_EXITED; | |
3172 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3173 | goto got_status; | |
3174 | } | |
3175 | case 'X': | |
3176 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3177 | status->value.sig = (enum target_signal) | |
3178 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3179 | kill_kludge = 1; | |
3180 | ||
3181 | goto got_status; | |
23860348 | 3182 | case 'O': /* Console output. */ |
43ff13b4 | 3183 | remote_console_output (buf + 1); |
c4093a6a | 3184 | /* Return immediately to the event loop. The event loop will |
23860348 | 3185 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3186 | status->kind = TARGET_WAITKIND_IGNORE; |
3187 | goto got_status; | |
43ff13b4 JM |
3188 | case '\0': |
3189 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3190 | { | |
3191 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3192 | the remote system doesn't support it. */ |
43ff13b4 JM |
3193 | target_terminal_ours_for_output (); |
3194 | printf_filtered | |
3195 | ("Can't send signals to this remote system. %s not sent.\n", | |
3196 | target_signal_to_name (last_sent_signal)); | |
3197 | last_sent_signal = TARGET_SIGNAL_0; | |
3198 | target_terminal_inferior (); | |
3199 | ||
3200 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3201 | putpkt ((char *) buf); | |
3202 | continue; | |
3203 | } | |
3204 | /* else fallthrough */ | |
3205 | default: | |
8a3fe4f8 | 3206 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3207 | continue; |
3208 | } | |
3209 | } | |
c5aa993b | 3210 | got_status: |
43ff13b4 JM |
3211 | if (thread_num != -1) |
3212 | { | |
39f77062 | 3213 | return pid_to_ptid (thread_num); |
43ff13b4 | 3214 | } |
39f77062 | 3215 | return inferior_ptid; |
43ff13b4 JM |
3216 | } |
3217 | ||
c906108c SS |
3218 | /* Number of bytes of registers this stub implements. */ |
3219 | ||
3220 | static int register_bytes_found; | |
3221 | ||
3222 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3223 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3224 | |
b96ec7ac AC |
3225 | static int |
3226 | fetch_register_using_p (int regnum) | |
3227 | { | |
3228 | struct remote_state *rs = get_remote_state (); | |
3229 | char *buf = alloca (rs->remote_packet_size), *p; | |
3230 | char regp[MAX_REGISTER_SIZE]; | |
3231 | int i; | |
3232 | ||
fcad0fa4 JB |
3233 | p = buf; |
3234 | *p++ = 'p'; | |
3235 | p += hexnumstr (p, regnum); | |
3236 | *p++ = '\0'; | |
b96ec7ac | 3237 | remote_send (buf, rs->remote_packet_size); |
3f9a994c JB |
3238 | |
3239 | /* If the stub didn't recognize the packet, or if we got an error, | |
3240 | tell our caller. */ | |
3241 | if (buf[0] == '\0' || buf[0] == 'E') | |
3242 | return 0; | |
3243 | ||
3244 | /* If this register is unfetchable, tell the regcache. */ | |
3245 | if (buf[0] == 'x') | |
8480adf2 | 3246 | { |
3f9a994c JB |
3247 | regcache_raw_supply (current_regcache, regnum, NULL); |
3248 | set_register_cached (regnum, -1); | |
8480adf2 | 3249 | return 1; |
b96ec7ac | 3250 | } |
b96ec7ac | 3251 | |
3f9a994c JB |
3252 | /* Otherwise, parse and supply the value. */ |
3253 | p = buf; | |
3254 | i = 0; | |
3255 | while (p[0] != 0) | |
3256 | { | |
3257 | if (p[1] == 0) | |
3258 | { | |
8a3fe4f8 | 3259 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3260 | return 0; |
3261 | } | |
3262 | ||
3263 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3264 | p += 2; | |
3265 | } | |
3266 | regcache_raw_supply (current_regcache, regnum, regp); | |
3267 | return 1; | |
b96ec7ac AC |
3268 | } |
3269 | ||
c906108c | 3270 | static void |
ad10f812 | 3271 | remote_fetch_registers (int regnum) |
c906108c | 3272 | { |
d01949b6 AC |
3273 | struct remote_state *rs = get_remote_state (); |
3274 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3275 | int i; |
3276 | char *p; | |
ad10f812 | 3277 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3278 | |
39f77062 | 3279 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3280 | |
b323314b AC |
3281 | if (regnum >= 0) |
3282 | { | |
3283 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3284 | gdb_assert (reg != NULL); | |
3285 | if (!reg->in_g_packet) | |
3286 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3287 | _("Attempt to fetch a non G-packet register when this " |
3288 | "remote.c does not support the p-packet.")); | |
b323314b | 3289 | } |
b96ec7ac AC |
3290 | switch (remote_protocol_p.support) |
3291 | { | |
3292 | case PACKET_DISABLE: | |
3293 | break; | |
3294 | case PACKET_ENABLE: | |
3295 | if (fetch_register_using_p (regnum)) | |
3296 | return; | |
3297 | else | |
8a3fe4f8 | 3298 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3299 | case PACKET_SUPPORT_UNKNOWN: |
3300 | if (fetch_register_using_p (regnum)) | |
3301 | { | |
3302 | /* The stub recognized the 'p' packet. Remember this. */ | |
3303 | remote_protocol_p.support = PACKET_ENABLE; | |
3304 | return; | |
3305 | } | |
3306 | else | |
3307 | { | |
3308 | /* The stub does not support the 'P' packet. Use 'G' | |
3309 | instead, and don't try using 'P' in the future (it | |
3310 | will just waste our time). */ | |
3311 | remote_protocol_p.support = PACKET_DISABLE; | |
3312 | break; | |
3313 | } | |
3314 | } | |
b323314b | 3315 | |
c906108c | 3316 | sprintf (buf, "g"); |
d01949b6 | 3317 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3318 | |
11cf8741 JM |
3319 | /* Save the size of the packet sent to us by the target. Its used |
3320 | as a heuristic when determining the max size of packets that the | |
23860348 | 3321 | target can safely receive. */ |
d01949b6 AC |
3322 | if ((rs->actual_register_packet_size) == 0) |
3323 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3324 | |
3325 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3326 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3327 | |
3328 | /* We can get out of synch in various cases. If the first character | |
3329 | in the buffer is not a hex character, assume that has happened | |
3330 | and try to fetch another packet to read. */ | |
3331 | while ((buf[0] < '0' || buf[0] > '9') | |
3332 | && (buf[0] < 'a' || buf[0] > 'f') | |
23860348 | 3333 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3334 | { |
3335 | if (remote_debug) | |
0f71a2f6 JM |
3336 | fprintf_unfiltered (gdb_stdlog, |
3337 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3338 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3339 | } |
3340 | ||
3341 | /* Reply describes registers byte by byte, each byte encoded as two | |
3342 | hex characters. Suck them all up, then supply them to the | |
3343 | register cacheing/storage mechanism. */ | |
3344 | ||
3345 | p = buf; | |
ad10f812 | 3346 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3347 | { |
3348 | if (p[0] == 0) | |
3349 | break; | |
3350 | if (p[1] == 0) | |
3351 | { | |
8a3fe4f8 | 3352 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3353 | /* Don't change register_bytes_found in this case, and don't |
3354 | print a second warning. */ | |
3355 | goto supply_them; | |
3356 | } | |
3357 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3358 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3359 | else |
3360 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3361 | p += 2; | |
3362 | } | |
3363 | ||
3364 | if (i != register_bytes_found) | |
3365 | { | |
3366 | register_bytes_found = i; | |
2649061d AC |
3367 | if (REGISTER_BYTES_OK_P () |
3368 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3369 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3370 | } |
c5aa993b | 3371 | |
b323314b | 3372 | supply_them: |
ad10f812 | 3373 | { |
b323314b AC |
3374 | int i; |
3375 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3376 | { |
b323314b AC |
3377 | struct packet_reg *r = &rs->regs[i]; |
3378 | if (r->in_g_packet) | |
3379 | { | |
8ccc1287 AC |
3380 | if (r->offset * 2 >= strlen (buf)) |
3381 | /* A short packet that didn't include the register's | |
3382 | value, this implies that the register is zero (and | |
3383 | not that the register is unavailable). Supply that | |
3384 | zero value. */ | |
3385 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3386 | else if (buf[r->offset * 2] == 'x') | |
3387 | { | |
3388 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3389 | /* The register isn't available, mark it as such (at | |
3390 | the same time setting the value to zero). */ | |
3391 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3392 | set_register_cached (i, -1); | |
3393 | } | |
3394 | else | |
3395 | regcache_raw_supply (current_regcache, r->regnum, | |
3396 | regs + r->offset); | |
b323314b | 3397 | } |
ad10f812 AC |
3398 | } |
3399 | } | |
c906108c SS |
3400 | } |
3401 | ||
3402 | /* Prepare to store registers. Since we may send them all (using a | |
3403 | 'G' request), we have to read out the ones we don't want to change | |
3404 | first. */ | |
3405 | ||
c5aa993b | 3406 | static void |
fba45db2 | 3407 | remote_prepare_to_store (void) |
c906108c | 3408 | { |
cf0e1e0d DJ |
3409 | struct remote_state *rs = get_remote_state (); |
3410 | int i; | |
3411 | char buf[MAX_REGISTER_SIZE]; | |
3412 | ||
c906108c | 3413 | /* Make sure the entire registers array is valid. */ |
5a2468f5 JM |
3414 | switch (remote_protocol_P.support) |
3415 | { | |
3416 | case PACKET_DISABLE: | |
3417 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3418 | /* Make sure all the necessary registers are cached. */ |
3419 | for (i = 0; i < NUM_REGS; i++) | |
3420 | if (rs->regs[i].in_g_packet) | |
3421 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3422 | break; |
3423 | case PACKET_ENABLE: | |
3424 | break; | |
3425 | } | |
3426 | } | |
3427 | ||
ad10f812 | 3428 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3429 | packet was not recognized. */ |
5a2468f5 JM |
3430 | |
3431 | static int | |
ad10f812 | 3432 | store_register_using_P (int regnum) |
5a2468f5 | 3433 | { |
d01949b6 | 3434 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3435 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3436 | /* Try storing a single register. */ |
d01949b6 | 3437 | char *buf = alloca (rs->remote_packet_size); |
d9d9c31f | 3438 | char regp[MAX_REGISTER_SIZE]; |
5a2468f5 JM |
3439 | char *p; |
3440 | int i; | |
3441 | ||
ad10f812 | 3442 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3443 | p = buf + strlen (buf); |
822c9732 | 3444 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3445 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
ad10f812 | 3446 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3447 | |
3448 | return buf[0] != '\0'; | |
c906108c SS |
3449 | } |
3450 | ||
5a2468f5 | 3451 | |
23860348 MS |
3452 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3453 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3454 | |
3455 | static void | |
ad10f812 | 3456 | remote_store_registers (int regnum) |
c906108c | 3457 | { |
d01949b6 | 3458 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3459 | char *buf; |
3460 | char *regs; | |
c906108c SS |
3461 | int i; |
3462 | char *p; | |
3463 | ||
39f77062 | 3464 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3465 | |
ad10f812 | 3466 | if (regnum >= 0) |
c906108c | 3467 | { |
5a2468f5 | 3468 | switch (remote_protocol_P.support) |
c906108c | 3469 | { |
5a2468f5 JM |
3470 | case PACKET_DISABLE: |
3471 | break; | |
3472 | case PACKET_ENABLE: | |
ad10f812 | 3473 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3474 | return; |
3475 | else | |
8a3fe4f8 | 3476 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3477 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3478 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3479 | { |
3480 | /* The stub recognized the 'P' packet. Remember this. */ | |
3481 | remote_protocol_P.support = PACKET_ENABLE; | |
3482 | return; | |
3483 | } | |
3484 | else | |
3485 | { | |
3486 | /* The stub does not support the 'P' packet. Use 'G' | |
3487 | instead, and don't try using 'P' in the future (it | |
3488 | will just waste our time). */ | |
3489 | remote_protocol_P.support = PACKET_DISABLE; | |
3490 | break; | |
3491 | } | |
c906108c | 3492 | } |
c906108c SS |
3493 | } |
3494 | ||
193cb69f AC |
3495 | /* Extract all the registers in the regcache copying them into a |
3496 | local buffer. */ | |
3497 | { | |
b323314b | 3498 | int i; |
ad10f812 AC |
3499 | regs = alloca (rs->sizeof_g_packet); |
3500 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3501 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3502 | { |
b323314b AC |
3503 | struct packet_reg *r = &rs->regs[i]; |
3504 | if (r->in_g_packet) | |
822c9732 | 3505 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3506 | } |
3507 | } | |
c906108c SS |
3508 | |
3509 | /* Command describes registers byte by byte, | |
3510 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3511 | buf = alloca (rs->remote_packet_size); |
3512 | p = buf; | |
3513 | *p++ = 'G'; | |
c906108c | 3514 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3515 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3516 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3517 | } |
c906108c SS |
3518 | \f |
3519 | ||
3520 | /* Return the number of hex digits in num. */ | |
3521 | ||
3522 | static int | |
fba45db2 | 3523 | hexnumlen (ULONGEST num) |
c906108c SS |
3524 | { |
3525 | int i; | |
3526 | ||
3527 | for (i = 0; num != 0; i++) | |
3528 | num >>= 4; | |
3529 | ||
3530 | return max (i, 1); | |
3531 | } | |
3532 | ||
2df3850c | 3533 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3534 | |
3535 | static int | |
fba45db2 | 3536 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3537 | { |
c906108c | 3538 | int len = hexnumlen (num); |
2df3850c JM |
3539 | return hexnumnstr (buf, num, len); |
3540 | } | |
3541 | ||
c906108c | 3542 | |
2df3850c | 3543 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3544 | |
2df3850c | 3545 | static int |
fba45db2 | 3546 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3547 | { |
3548 | int i; | |
3549 | ||
3550 | buf[width] = '\0'; | |
3551 | ||
3552 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3553 | { |
c5aa993b | 3554 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3555 | num >>= 4; |
3556 | } | |
3557 | ||
2df3850c | 3558 | return width; |
c906108c SS |
3559 | } |
3560 | ||
23860348 | 3561 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3562 | |
3563 | static CORE_ADDR | |
fba45db2 | 3564 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3565 | { |
3566 | if (remote_address_size > 0 | |
3567 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3568 | { | |
3569 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3570 | in a ULONGEST variable. */ |
c906108c SS |
3571 | ULONGEST mask = 1; |
3572 | mask = (mask << remote_address_size) - 1; | |
3573 | addr &= mask; | |
3574 | } | |
3575 | return addr; | |
3576 | } | |
3577 | ||
3578 | /* Determine whether the remote target supports binary downloading. | |
3579 | This is accomplished by sending a no-op memory write of zero length | |
3580 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3581 | the whole packet, since many stubs strip the eighth bit and |
3582 | subsequently compute a wrong checksum, which causes real havoc with | |
3583 | remote_write_bytes. | |
7a292a7a | 3584 | |
96baa820 JM |
3585 | NOTE: This can still lose if the serial line is not eight-bit |
3586 | clean. In cases like this, the user should clear "remote | |
23860348 | 3587 | X-packet". */ |
96baa820 | 3588 | |
c906108c | 3589 | static void |
fba45db2 | 3590 | check_binary_download (CORE_ADDR addr) |
c906108c | 3591 | { |
d01949b6 | 3592 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3593 | switch (remote_protocol_binary_download.support) |
c906108c | 3594 | { |
96baa820 JM |
3595 | case PACKET_DISABLE: |
3596 | break; | |
3597 | case PACKET_ENABLE: | |
3598 | break; | |
3599 | case PACKET_SUPPORT_UNKNOWN: | |
3600 | { | |
d01949b6 | 3601 | char *buf = alloca (rs->remote_packet_size); |
96baa820 | 3602 | char *p; |
802188a7 | 3603 | |
96baa820 JM |
3604 | p = buf; |
3605 | *p++ = 'X'; | |
3606 | p += hexnumstr (p, (ULONGEST) addr); | |
3607 | *p++ = ','; | |
3608 | p += hexnumstr (p, (ULONGEST) 0); | |
3609 | *p++ = ':'; | |
3610 | *p = '\0'; | |
802188a7 | 3611 | |
96baa820 | 3612 | putpkt_binary (buf, (int) (p - buf)); |
d01949b6 | 3613 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3614 | |
96baa820 JM |
3615 | if (buf[0] == '\0') |
3616 | { | |
3617 | if (remote_debug) | |
3618 | fprintf_unfiltered (gdb_stdlog, | |
3619 | "binary downloading NOT suppported by target\n"); | |
3620 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3621 | } | |
3622 | else | |
3623 | { | |
3624 | if (remote_debug) | |
3625 | fprintf_unfiltered (gdb_stdlog, | |
3626 | "binary downloading suppported by target\n"); | |
3627 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3628 | } | |
3629 | break; | |
3630 | } | |
c906108c SS |
3631 | } |
3632 | } | |
3633 | ||
3634 | /* Write memory data directly to the remote machine. | |
3635 | This does not inform the data cache; the data cache uses this. | |
3636 | MEMADDR is the address in the remote memory space. | |
3637 | MYADDR is the address of the buffer in our space. | |
3638 | LEN is the number of bytes. | |
3639 | ||
917317f4 | 3640 | Returns number of bytes transferred, or 0 (setting errno) for |
23860348 | 3641 | error. Only transfer a single packet. */ |
c906108c | 3642 | |
449092f6 | 3643 | int |
917317f4 | 3644 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3645 | { |
917317f4 | 3646 | unsigned char *buf; |
917317f4 JM |
3647 | unsigned char *p; |
3648 | unsigned char *plen; | |
c2d11a7d | 3649 | long sizeof_buf; |
917317f4 JM |
3650 | int plenlen; |
3651 | int todo; | |
3652 | int nr_bytes; | |
a257b5bb AC |
3653 | int payload_size; |
3654 | unsigned char *payload_start; | |
c906108c | 3655 | |
a257b5bb | 3656 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3657 | check_binary_download (memaddr); |
3658 | ||
a257b5bb | 3659 | /* Compute the size, and then allocate space for the largest |
23860348 | 3660 | possible packet. Include space for an extra trailing NULL. */ |
a257b5bb | 3661 | sizeof_buf = get_memory_write_packet_size () + 1; |
c2d11a7d | 3662 | buf = alloca (sizeof_buf); |
c906108c | 3663 | |
a257b5bb AC |
3664 | /* Compute the size of the actual payload by subtracting out the |
3665 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ | |
3666 | payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN") | |
3667 | + hexnumlen (memaddr) | |
3668 | + hexnumlen (len))); | |
c906108c | 3669 | |
a257b5bb | 3670 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3671 | |
a257b5bb | 3672 | /* Append "[XM]". Compute a best guess of the number of bytes |
23860348 | 3673 | actually transfered. */ |
a257b5bb | 3674 | p = buf; |
917317f4 | 3675 | switch (remote_protocol_binary_download.support) |
c906108c | 3676 | { |
917317f4 JM |
3677 | case PACKET_ENABLE: |
3678 | *p++ = 'X'; | |
23860348 | 3679 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3680 | todo = min (len, payload_size); |
917317f4 JM |
3681 | break; |
3682 | case PACKET_DISABLE: | |
3683 | *p++ = 'M'; | |
23860348 | 3684 | /* Num bytes that will fit. */ |
a257b5bb | 3685 | todo = min (len, payload_size / 2); |
917317f4 JM |
3686 | break; |
3687 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3688 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3689 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3690 | default: |
e2e0b3e5 | 3691 | internal_error (__FILE__, __LINE__, _("bad switch")); |
917317f4 | 3692 | } |
802188a7 | 3693 | |
a257b5bb | 3694 | /* Append "<memaddr>". */ |
917317f4 JM |
3695 | memaddr = remote_address_masked (memaddr); |
3696 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3697 | |
3698 | /* Append ",". */ | |
917317f4 | 3699 | *p++ = ','; |
802188a7 | 3700 | |
a257b5bb AC |
3701 | /* Append <len>. Retain the location/size of <len>. It may need to |
3702 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3703 | plen = p; |
3704 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3705 | p += plenlen; | |
a257b5bb AC |
3706 | |
3707 | /* Append ":". */ | |
917317f4 JM |
3708 | *p++ = ':'; |
3709 | *p = '\0'; | |
802188a7 | 3710 | |
a257b5bb AC |
3711 | /* Append the packet body. */ |
3712 | payload_start = p; | |
917317f4 JM |
3713 | switch (remote_protocol_binary_download.support) |
3714 | { | |
3715 | case PACKET_ENABLE: | |
3716 | /* Binary mode. Send target system values byte by byte, in | |
3717 | increasing byte addresses. Only escape certain critical | |
3718 | characters. */ | |
3719 | for (nr_bytes = 0; | |
a257b5bb | 3720 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3721 | nr_bytes++) |
c906108c | 3722 | { |
917317f4 JM |
3723 | switch (myaddr[nr_bytes] & 0xff) |
3724 | { | |
3725 | case '$': | |
3726 | case '#': | |
3727 | case 0x7d: | |
23860348 | 3728 | /* These must be escaped. */ |
917317f4 JM |
3729 | *p++ = 0x7d; |
3730 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3731 | break; | |
3732 | default: | |
3733 | *p++ = myaddr[nr_bytes] & 0xff; | |
3734 | break; | |
3735 | } | |
c906108c | 3736 | } |
917317f4 | 3737 | if (nr_bytes < todo) |
c906108c | 3738 | { |
802188a7 | 3739 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3740 | and we have actually sent fewer bytes than planned. |
3741 | Fix-up the length field of the packet. Use the same | |
3742 | number of characters as before. */ | |
917317f4 JM |
3743 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3744 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3745 | } |
917317f4 JM |
3746 | break; |
3747 | case PACKET_DISABLE: | |
3748 | /* Normal mode: Send target system values byte by byte, in | |
3749 | increasing byte addresses. Each byte is encoded as a two hex | |
3750 | value. */ | |
2644f393 | 3751 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3752 | p += 2 * nr_bytes; |
917317f4 JM |
3753 | break; |
3754 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3755 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3756 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3757 | default: |
e2e0b3e5 | 3758 | internal_error (__FILE__, __LINE__, _("bad switch")); |
c906108c | 3759 | } |
802188a7 | 3760 | |
917317f4 | 3761 | putpkt_binary (buf, (int) (p - buf)); |
c2d11a7d | 3762 | getpkt (buf, sizeof_buf, 0); |
802188a7 | 3763 | |
917317f4 JM |
3764 | if (buf[0] == 'E') |
3765 | { | |
3766 | /* There is no correspondance between what the remote protocol | |
3767 | uses for errors and errno codes. We would like a cleaner way | |
3768 | of representing errors (big enough to include errno codes, | |
3769 | bfd_error codes, and others). But for now just return EIO. */ | |
3770 | errno = EIO; | |
3771 | return 0; | |
3772 | } | |
802188a7 | 3773 | |
23860348 MS |
3774 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
3775 | fewer bytes than we'd planned. */ | |
917317f4 | 3776 | return nr_bytes; |
c906108c SS |
3777 | } |
3778 | ||
3779 | /* Read memory data directly from the remote machine. | |
3780 | This does not use the data cache; the data cache uses this. | |
3781 | MEMADDR is the address in the remote memory space. | |
3782 | MYADDR is the address of the buffer in our space. | |
3783 | LEN is the number of bytes. | |
3784 | ||
3785 | Returns number of bytes transferred, or 0 for error. */ | |
3786 | ||
917317f4 JM |
3787 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3788 | remote targets) shouldn't attempt to read the entire buffer. | |
3789 | Instead it should read a single packet worth of data and then | |
3790 | return the byte size of that packet to the caller. The caller (its | |
3791 | caller and its callers caller ;-) already contains code for | |
23860348 | 3792 | handling partial reads. */ |
917317f4 | 3793 | |
449092f6 | 3794 | int |
fba45db2 | 3795 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3796 | { |
11cf8741 | 3797 | char *buf; |
23860348 | 3798 | int max_buf_size; /* Max size of packet output buffer. */ |
c2d11a7d | 3799 | long sizeof_buf; |
c906108c SS |
3800 | int origlen; |
3801 | ||
23860348 | 3802 | /* Create a buffer big enough for this packet. */ |
11cf8741 | 3803 | max_buf_size = get_memory_read_packet_size (); |
23860348 | 3804 | sizeof_buf = max_buf_size + 1; /* Space for trailing NULL. */ |
c2d11a7d | 3805 | buf = alloca (sizeof_buf); |
c906108c SS |
3806 | |
3807 | origlen = len; | |
3808 | while (len > 0) | |
3809 | { | |
c906108c SS |
3810 | char *p; |
3811 | int todo; | |
3812 | int i; | |
3813 | ||
c5aa993b | 3814 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3815 | |
3816 | /* construct "m"<memaddr>","<len>" */ | |
3817 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3818 | memaddr = remote_address_masked (memaddr); | |
3819 | p = buf; | |
3820 | *p++ = 'm'; | |
3821 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3822 | *p++ = ','; | |
3823 | p += hexnumstr (p, (ULONGEST) todo); | |
3824 | *p = '\0'; | |
3825 | ||
3826 | putpkt (buf); | |
c2d11a7d | 3827 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3828 | |
66504d44 MS |
3829 | if (buf[0] == 'E' |
3830 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3831 | && buf[3] == '\0') | |
c906108c | 3832 | { |
23860348 MS |
3833 | /* There is no correspondance between what the remote |
3834 | protocol uses for errors and errno codes. We would like | |
3835 | a cleaner way of representing errors (big enough to | |
3836 | include errno codes, bfd_error codes, and others). But | |
3837 | for now just return EIO. */ | |
c906108c SS |
3838 | errno = EIO; |
3839 | return 0; | |
3840 | } | |
3841 | ||
c5aa993b JM |
3842 | /* Reply describes memory byte by byte, |
3843 | each byte encoded as two hex characters. */ | |
c906108c SS |
3844 | |
3845 | p = buf; | |
30559e10 | 3846 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3847 | { |
30559e10 | 3848 | /* Reply is short. This means that we were able to read |
23860348 | 3849 | only part of what we wanted to. */ |
30559e10 | 3850 | return i + (origlen - len); |
c906108c SS |
3851 | } |
3852 | myaddr += todo; | |
3853 | memaddr += todo; | |
3854 | len -= todo; | |
3855 | } | |
3856 | return origlen; | |
3857 | } | |
3858 | \f | |
3859 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
3860 | transferring to or from debugger address BUFFER. Write to inferior |
3861 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
3862 | read; 0 for error. TARGET is unused. */ | |
392a587b | 3863 | |
c906108c | 3864 | static int |
c338868a | 3865 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 3866 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3867 | struct target_ops *target) |
c906108c | 3868 | { |
392a587b JM |
3869 | CORE_ADDR targ_addr; |
3870 | int targ_len; | |
4930751a C |
3871 | int res; |
3872 | ||
f6684c31 | 3873 | /* Should this be the selected frame? */ |
23860348 MS |
3874 | gdbarch_remote_translate_xfer_address (current_gdbarch, |
3875 | current_regcache, | |
f6684c31 AC |
3876 | mem_addr, mem_len, |
3877 | &targ_addr, &targ_len); | |
392a587b | 3878 | if (targ_len <= 0) |
c906108c | 3879 | return 0; |
c906108c | 3880 | |
4930751a C |
3881 | if (should_write) |
3882 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3883 | else | |
3884 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3885 | ||
3886 | return res; | |
c906108c SS |
3887 | } |
3888 | ||
c906108c | 3889 | static void |
fba45db2 | 3890 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3891 | { |
3892 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3893 | } | |
3894 | \f | |
3895 | /* Stuff for dealing with the packets which are part of this protocol. | |
3896 | See comment at top of file for details. */ | |
3897 | ||
23860348 MS |
3898 | /* Read a single character from the remote end, masking it down to 7 |
3899 | bits. */ | |
c906108c SS |
3900 | |
3901 | static int | |
fba45db2 | 3902 | readchar (int timeout) |
c906108c SS |
3903 | { |
3904 | int ch; | |
3905 | ||
2cd58942 | 3906 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3907 | |
2acceee2 JM |
3908 | if (ch >= 0) |
3909 | return (ch & 0x7f); | |
3910 | ||
3911 | switch ((enum serial_rc) ch) | |
c906108c SS |
3912 | { |
3913 | case SERIAL_EOF: | |
2acceee2 | 3914 | target_mourn_inferior (); |
8a3fe4f8 | 3915 | error (_("Remote connection closed")); |
2acceee2 | 3916 | /* no return */ |
c906108c | 3917 | case SERIAL_ERROR: |
e2e0b3e5 | 3918 | perror_with_name (_("Remote communication error")); |
2acceee2 | 3919 | /* no return */ |
c906108c | 3920 | case SERIAL_TIMEOUT: |
2acceee2 | 3921 | break; |
c906108c | 3922 | } |
2acceee2 | 3923 | return ch; |
c906108c SS |
3924 | } |
3925 | ||
3926 | /* Send the command in BUF to the remote machine, and read the reply | |
3927 | into BUF. Report an error if we get an error reply. */ | |
3928 | ||
3929 | static void | |
c2d11a7d JM |
3930 | remote_send (char *buf, |
3931 | long sizeof_buf) | |
c906108c SS |
3932 | { |
3933 | putpkt (buf); | |
c2d11a7d | 3934 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3935 | |
3936 | if (buf[0] == 'E') | |
8a3fe4f8 | 3937 | error (_("Remote failure reply: %s"), buf); |
c906108c SS |
3938 | } |
3939 | ||
3940 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3941 | string notation. */ | |
3942 | ||
3943 | static void | |
fba45db2 | 3944 | print_packet (char *buf) |
c906108c SS |
3945 | { |
3946 | puts_filtered ("\""); | |
43e526b9 | 3947 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3948 | puts_filtered ("\""); |
3949 | } | |
3950 | ||
3951 | int | |
fba45db2 | 3952 | putpkt (char *buf) |
c906108c SS |
3953 | { |
3954 | return putpkt_binary (buf, strlen (buf)); | |
3955 | } | |
3956 | ||
3957 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 MS |
3958 | of the packet is in BUF. The string in BUF can be at most |
3959 | (rs->remote_packet_size) - 5 to account for the $, # and checksum, | |
3960 | and for a possible /0 if we are debugging (remote_debug) and want | |
3961 | to print the sent packet as a string. */ | |
c906108c SS |
3962 | |
3963 | static int | |
fba45db2 | 3964 | putpkt_binary (char *buf, int cnt) |
c906108c | 3965 | { |
d01949b6 | 3966 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3967 | int i; |
3968 | unsigned char csum = 0; | |
11cf8741 | 3969 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 3970 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 3971 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 3972 | |
c906108c SS |
3973 | int ch; |
3974 | int tcount = 0; | |
3975 | char *p; | |
3976 | ||
3977 | /* Copy the packet into buffer BUF2, encapsulating it | |
3978 | and giving it a checksum. */ | |
3979 | ||
c906108c SS |
3980 | p = buf2; |
3981 | *p++ = '$'; | |
3982 | ||
3983 | for (i = 0; i < cnt; i++) | |
3984 | { | |
3985 | csum += buf[i]; | |
3986 | *p++ = buf[i]; | |
3987 | } | |
3988 | *p++ = '#'; | |
3989 | *p++ = tohex ((csum >> 4) & 0xf); | |
3990 | *p++ = tohex (csum & 0xf); | |
3991 | ||
3992 | /* Send it over and over until we get a positive ack. */ | |
3993 | ||
3994 | while (1) | |
3995 | { | |
3996 | int started_error_output = 0; | |
3997 | ||
3998 | if (remote_debug) | |
3999 | { | |
4000 | *p = '\0'; | |
43e526b9 JM |
4001 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4002 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4003 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4004 | gdb_flush (gdb_stdlog); |
c906108c | 4005 | } |
2cd58942 | 4006 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4007 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4008 | |
23860348 | 4009 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4010 | while (1) |
4011 | { | |
4012 | ch = readchar (remote_timeout); | |
4013 | ||
c5aa993b | 4014 | if (remote_debug) |
c906108c SS |
4015 | { |
4016 | switch (ch) | |
4017 | { | |
4018 | case '+': | |
1216fa2c | 4019 | case '-': |
c906108c SS |
4020 | case SERIAL_TIMEOUT: |
4021 | case '$': | |
4022 | if (started_error_output) | |
4023 | { | |
4024 | putchar_unfiltered ('\n'); | |
4025 | started_error_output = 0; | |
4026 | } | |
4027 | } | |
4028 | } | |
4029 | ||
4030 | switch (ch) | |
4031 | { | |
4032 | case '+': | |
4033 | if (remote_debug) | |
0f71a2f6 | 4034 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4035 | return 1; |
1216fa2c AC |
4036 | case '-': |
4037 | if (remote_debug) | |
4038 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4039 | case SERIAL_TIMEOUT: |
c5aa993b | 4040 | tcount++; |
c906108c SS |
4041 | if (tcount > 3) |
4042 | return 0; | |
23860348 | 4043 | break; /* Retransmit buffer. */ |
c906108c SS |
4044 | case '$': |
4045 | { | |
40e3f985 | 4046 | if (remote_debug) |
23860348 MS |
4047 | fprintf_unfiltered (gdb_stdlog, |
4048 | "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
4049 | /* It's probably an old response sent because an ACK |
4050 | was lost. Gobble up the packet and ack it so it | |
4051 | doesn't get retransmitted when we resend this | |
4052 | packet. */ | |
40e3f985 | 4053 | read_frame (junkbuf, sizeof_junkbuf); |
d6f7abdf | 4054 | serial_write (remote_desc, "+", 1); |
23860348 | 4055 | continue; /* Now, go look for +. */ |
c906108c SS |
4056 | } |
4057 | default: | |
4058 | if (remote_debug) | |
4059 | { | |
4060 | if (!started_error_output) | |
4061 | { | |
4062 | started_error_output = 1; | |
0f71a2f6 | 4063 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4064 | } |
0f71a2f6 | 4065 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4066 | } |
4067 | continue; | |
4068 | } | |
23860348 | 4069 | break; /* Here to retransmit. */ |
c906108c SS |
4070 | } |
4071 | ||
4072 | #if 0 | |
4073 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4074 | able to get out next time we call QUIT, without anything as |
4075 | violent as interrupt_query. If we want to provide a way out of | |
4076 | here without getting to the next QUIT, it should be based on | |
4077 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4078 | if (quit_flag) |
4079 | { | |
4080 | quit_flag = 0; | |
4081 | interrupt_query (); | |
4082 | } | |
4083 | #endif | |
4084 | } | |
4085 | } | |
4086 | ||
4087 | /* Come here after finding the start of the frame. Collect the rest | |
4088 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4089 | compression. No more than sizeof_buf-1 characters are read so that |
4090 | the buffer can be NUL terminated. | |
c906108c | 4091 | |
c2d11a7d JM |
4092 | Returns -1 on error, number of characters in buffer (ignoring the |
4093 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4094 | SERIAL status indications). */ |
c2d11a7d JM |
4095 | |
4096 | static long | |
4097 | read_frame (char *buf, | |
4098 | long sizeof_buf) | |
c906108c SS |
4099 | { |
4100 | unsigned char csum; | |
c2d11a7d | 4101 | long bc; |
c906108c SS |
4102 | int c; |
4103 | ||
4104 | csum = 0; | |
c2d11a7d | 4105 | bc = 0; |
c906108c SS |
4106 | |
4107 | while (1) | |
4108 | { | |
23860348 | 4109 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NULL. */ |
c906108c | 4110 | c = readchar (remote_timeout); |
c906108c SS |
4111 | switch (c) |
4112 | { | |
4113 | case SERIAL_TIMEOUT: | |
4114 | if (remote_debug) | |
0f71a2f6 | 4115 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4116 | return -1; |
c906108c SS |
4117 | case '$': |
4118 | if (remote_debug) | |
0f71a2f6 JM |
4119 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4120 | gdb_stdlog); | |
23860348 | 4121 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4122 | case '#': |
4123 | { | |
4124 | unsigned char pktcsum; | |
e1b09194 AC |
4125 | int check_0 = 0; |
4126 | int check_1 = 0; | |
c906108c | 4127 | |
c2d11a7d | 4128 | buf[bc] = '\0'; |
c906108c | 4129 | |
e1b09194 AC |
4130 | check_0 = readchar (remote_timeout); |
4131 | if (check_0 >= 0) | |
4132 | check_1 = readchar (remote_timeout); | |
802188a7 | 4133 | |
e1b09194 AC |
4134 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4135 | { | |
4136 | if (remote_debug) | |
23860348 MS |
4137 | fputs_filtered ("Timeout in checksum, retrying\n", |
4138 | gdb_stdlog); | |
e1b09194 AC |
4139 | return -1; |
4140 | } | |
4141 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4142 | { |
4143 | if (remote_debug) | |
23860348 MS |
4144 | fputs_filtered ("Communication error in checksum\n", |
4145 | gdb_stdlog); | |
40e3f985 FN |
4146 | return -1; |
4147 | } | |
c906108c | 4148 | |
e1b09194 | 4149 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4150 | if (csum == pktcsum) |
c2d11a7d | 4151 | return bc; |
c906108c | 4152 | |
c5aa993b | 4153 | if (remote_debug) |
c906108c | 4154 | { |
0f71a2f6 | 4155 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4156 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4157 | pktcsum, csum); |
4158 | fputs_filtered (buf, gdb_stdlog); | |
4159 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4160 | } |
c2d11a7d | 4161 | /* Number of characters in buffer ignoring trailing |
23860348 | 4162 | NULL. */ |
c2d11a7d | 4163 | return -1; |
c906108c | 4164 | } |
23860348 | 4165 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4166 | { |
4167 | int repeat; | |
4168 | csum += c; | |
c906108c | 4169 | |
b4501125 AC |
4170 | c = readchar (remote_timeout); |
4171 | csum += c; | |
23860348 | 4172 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4173 | |
23860348 | 4174 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4175 | |
802188a7 | 4176 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4177 | && bc > 0 |
fb6e5c55 | 4178 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4179 | { |
c2d11a7d JM |
4180 | memset (&buf[bc], buf[bc - 1], repeat); |
4181 | bc += repeat; | |
c2c6d25f JM |
4182 | continue; |
4183 | } | |
4184 | ||
c2d11a7d | 4185 | buf[bc] = '\0'; |
a3f17187 | 4186 | printf_filtered (_("Repeat count %d too large for buffer: "), |
23860348 | 4187 | repeat); |
c2c6d25f JM |
4188 | puts_filtered (buf); |
4189 | puts_filtered ("\n"); | |
c2d11a7d | 4190 | return -1; |
c2c6d25f | 4191 | } |
c906108c | 4192 | default: |
c2d11a7d | 4193 | if (bc < sizeof_buf - 1) |
c906108c | 4194 | { |
c2d11a7d | 4195 | buf[bc++] = c; |
c906108c SS |
4196 | csum += c; |
4197 | continue; | |
4198 | } | |
4199 | ||
c2d11a7d | 4200 | buf[bc] = '\0'; |
c906108c SS |
4201 | puts_filtered ("Remote packet too long: "); |
4202 | puts_filtered (buf); | |
4203 | puts_filtered ("\n"); | |
4204 | ||
c2d11a7d | 4205 | return -1; |
c906108c SS |
4206 | } |
4207 | } | |
4208 | } | |
4209 | ||
4210 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4211 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4212 | this is used (in synchronous mode) to wait for a target that is is | |
4213 | executing user code to stop. */ | |
d9fcf2fb JM |
4214 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4215 | don't have to change all the calls to getpkt to deal with the | |
4216 | return value, because at the moment I don't know what the right | |
23860348 | 4217 | thing to do it for those. */ |
c906108c | 4218 | void |
c2d11a7d JM |
4219 | getpkt (char *buf, |
4220 | long sizeof_buf, | |
4221 | int forever) | |
d9fcf2fb JM |
4222 | { |
4223 | int timed_out; | |
4224 | ||
4225 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4226 | } | |
4227 | ||
4228 | ||
4229 | /* Read a packet from the remote machine, with error checking, and | |
4230 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4231 | this is used (in synchronous mode) to wait for a target that is is | |
4232 | executing user code to stop. If FOREVER == 0, this function is | |
4233 | allowed to time out gracefully and return an indication of this to | |
23860348 | 4234 | the caller. */ |
3172dc30 | 4235 | static int |
d9fcf2fb JM |
4236 | getpkt_sane (char *buf, |
4237 | long sizeof_buf, | |
4238 | int forever) | |
c906108c SS |
4239 | { |
4240 | int c; | |
4241 | int tries; | |
4242 | int timeout; | |
4243 | int val; | |
4244 | ||
c5aa993b | 4245 | strcpy (buf, "timeout"); |
c906108c SS |
4246 | |
4247 | if (forever) | |
4248 | { | |
c906108c | 4249 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4250 | } |
4251 | ||
4252 | else | |
4253 | timeout = remote_timeout; | |
4254 | ||
4255 | #define MAX_TRIES 3 | |
4256 | ||
4257 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4258 | { | |
4259 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4260 | continuously, but if it pauses, we'll get a zero from |
4261 | readchar because of timeout. Then we'll count that as a | |
4262 | retry. */ | |
c906108c | 4263 | |
23860348 MS |
4264 | /* Note that we will only wait forever prior to the start of a |
4265 | packet. After that, we expect characters to arrive at a | |
4266 | brisk pace. They should show up within remote_timeout | |
4267 | intervals. */ | |
c906108c SS |
4268 | |
4269 | do | |
4270 | { | |
4271 | c = readchar (timeout); | |
4272 | ||
4273 | if (c == SERIAL_TIMEOUT) | |
4274 | { | |
23860348 | 4275 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4276 | { |
2acceee2 | 4277 | QUIT; |
c906108c | 4278 | target_mourn_inferior (); |
8a3fe4f8 | 4279 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4280 | } |
c906108c | 4281 | if (remote_debug) |
0f71a2f6 | 4282 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4283 | goto retry; |
4284 | } | |
4285 | } | |
4286 | while (c != '$'); | |
4287 | ||
4288 | /* We've found the start of a packet, now collect the data. */ | |
4289 | ||
c2d11a7d | 4290 | val = read_frame (buf, sizeof_buf); |
c906108c | 4291 | |
c2d11a7d | 4292 | if (val >= 0) |
c906108c SS |
4293 | { |
4294 | if (remote_debug) | |
43e526b9 JM |
4295 | { |
4296 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4297 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4298 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4299 | } | |
2cd58942 | 4300 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4301 | return 0; |
c906108c SS |
4302 | } |
4303 | ||
4304 | /* Try the whole thing again. */ | |
4305 | retry: | |
2cd58942 | 4306 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4307 | } |
4308 | ||
23860348 MS |
4309 | /* We have tried hard enough, and just can't receive the packet. |
4310 | Give up. */ | |
c906108c | 4311 | |
a3f17187 | 4312 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4313 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4314 | return 1; |
c906108c SS |
4315 | } |
4316 | \f | |
4317 | static void | |
fba45db2 | 4318 | remote_kill (void) |
c906108c SS |
4319 | { |
4320 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4321 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4322 | if (kill_kludge) | |
4323 | { | |
4324 | kill_kludge = 0; | |
4325 | target_mourn_inferior (); | |
4326 | return; | |
4327 | } | |
4328 | ||
4329 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4330 | speaking terms with the remote system. */ | |
c5aa993b | 4331 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4332 | |
4333 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4334 | we do or not. For the existing stubs, kill is a noop. */ | |
4335 | target_mourn_inferior (); | |
4336 | } | |
4337 | ||
23860348 | 4338 | /* Async version of remote_kill. */ |
43ff13b4 | 4339 | static void |
fba45db2 | 4340 | remote_async_kill (void) |
43ff13b4 | 4341 | { |
23860348 | 4342 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4343 | if (target_is_async_p ()) |
2cd58942 | 4344 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4345 | |
4346 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4347 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4348 | if (kill_kludge) | |
4349 | { | |
4350 | kill_kludge = 0; | |
4351 | target_mourn_inferior (); | |
4352 | return; | |
4353 | } | |
4354 | ||
23860348 MS |
4355 | /* Use catch_errors so the user can quit from gdb even when we |
4356 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4357 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4358 | |
4359 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4360 | we do or not. For the existing stubs, kill is a noop. */ | |
4361 | target_mourn_inferior (); | |
4362 | } | |
4363 | ||
c906108c | 4364 | static void |
fba45db2 | 4365 | remote_mourn (void) |
c906108c SS |
4366 | { |
4367 | remote_mourn_1 (&remote_ops); | |
4368 | } | |
4369 | ||
53a5351d | 4370 | static void |
fba45db2 | 4371 | remote_async_mourn (void) |
53a5351d JM |
4372 | { |
4373 | remote_mourn_1 (&remote_async_ops); | |
4374 | } | |
4375 | ||
c906108c | 4376 | static void |
fba45db2 | 4377 | extended_remote_mourn (void) |
c906108c SS |
4378 | { |
4379 | /* We do _not_ want to mourn the target like this; this will | |
4380 | remove the extended remote target from the target stack, | |
802188a7 | 4381 | and the next time the user says "run" it'll fail. |
c906108c SS |
4382 | |
4383 | FIXME: What is the right thing to do here? */ | |
4384 | #if 0 | |
4385 | remote_mourn_1 (&extended_remote_ops); | |
4386 | #endif | |
4387 | } | |
4388 | ||
4389 | /* Worker function for remote_mourn. */ | |
4390 | static void | |
fba45db2 | 4391 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4392 | { |
4393 | unpush_target (target); | |
4394 | generic_mourn_inferior (); | |
4395 | } | |
4396 | ||
4397 | /* In the extended protocol we want to be able to do things like | |
4398 | "run" and have them basically work as expected. So we need | |
802188a7 | 4399 | a special create_inferior function. |
c906108c SS |
4400 | |
4401 | FIXME: One day add support for changing the exec file | |
4402 | we're debugging, arguments and an environment. */ | |
4403 | ||
4404 | static void | |
23860348 MS |
4405 | extended_remote_create_inferior (char *exec_file, char *args, |
4406 | char **env, int from_tty) | |
c906108c SS |
4407 | { |
4408 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4409 | the remote server. */ | |
4410 | remove_breakpoints (); | |
4411 | ||
4412 | /* Now restart the remote server. */ | |
4413 | extended_remote_restart (); | |
4414 | ||
4415 | /* Now put the breakpoints back in. This way we're safe if the | |
4416 | restart function works via a unix fork on the remote side. */ | |
4417 | insert_breakpoints (); | |
4418 | ||
4419 | /* Clean up from the last time we were running. */ | |
4420 | clear_proceed_status (); | |
4421 | ||
4422 | /* Let the remote process run. */ | |
4423 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4424 | } | |
4425 | ||
23860348 | 4426 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4427 | static void |
23860348 MS |
4428 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4429 | char **env, int from_tty) | |
43ff13b4 JM |
4430 | { |
4431 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4432 | the remote server. */ | |
4433 | remove_breakpoints (); | |
4434 | ||
4435 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4436 | with the event loop. */ |
362646f5 | 4437 | if (target_can_async_p ()) |
2acceee2 | 4438 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4439 | |
4440 | /* Now restart the remote server. */ | |
4441 | extended_remote_restart (); | |
4442 | ||
4443 | /* Now put the breakpoints back in. This way we're safe if the | |
4444 | restart function works via a unix fork on the remote side. */ | |
4445 | insert_breakpoints (); | |
4446 | ||
4447 | /* Clean up from the last time we were running. */ | |
4448 | clear_proceed_status (); | |
4449 | ||
4450 | /* Let the remote process run. */ | |
4451 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4452 | } | |
c906108c | 4453 | \f |
c5aa993b | 4454 | |
aaab4dba | 4455 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4456 | instruction than other targets; in those use |
4457 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4458 | Also, bi-endian targets may define | |
4459 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4460 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4461 | just call the standard routines that are in mem-break.c. */ | |
4462 | ||
4463 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4464 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4465 | the ARCH-OS-tdep.c code can override the default. */ | |
4466 | ||
4467 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4468 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4469 | #endif |
4470 | ||
7fec2c59 | 4471 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4472 | |
4473 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4474 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4475 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4476 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4477 | #endif |
4478 | ||
7fec2c59 AC |
4479 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4480 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4481 | |
7fec2c59 | 4482 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4483 | |
aaab4dba AC |
4484 | /* Insert a breakpoint on targets that don't have any better |
4485 | breakpoint support. We read the contents of the target location | |
4486 | and stash it, then overwrite it with a breakpoint instruction. | |
4487 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4488 | is a pointer to memory allocated for saving the target contents. | |
4489 | It is guaranteed by the caller to be long enough to save the number | |
4490 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4491 | |
4492 | static int | |
fba45db2 | 4493 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4494 | { |
d01949b6 | 4495 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4496 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4497 | int val; |
802188a7 | 4498 | #endif |
96baa820 JM |
4499 | int bp_size; |
4500 | ||
d471ea57 AC |
4501 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4502 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4503 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4504 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4505 | |
d471ea57 | 4506 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4507 | { |
d01949b6 | 4508 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4509 | char *p = buf; |
802188a7 | 4510 | |
0caabb7e | 4511 | addr = remote_address_masked (addr); |
96baa820 JM |
4512 | *(p++) = 'Z'; |
4513 | *(p++) = '0'; | |
4514 | *(p++) = ','; | |
0caabb7e AC |
4515 | p += hexnumstr (p, (ULONGEST) addr); |
4516 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4517 | sprintf (p, ",%d", bp_size); |
802188a7 | 4518 | |
96baa820 | 4519 | putpkt (buf); |
d01949b6 | 4520 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4521 | |
d471ea57 | 4522 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4523 | { |
d471ea57 AC |
4524 | case PACKET_ERROR: |
4525 | return -1; | |
4526 | case PACKET_OK: | |
4527 | return 0; | |
4528 | case PACKET_UNKNOWN: | |
4529 | break; | |
96baa820 JM |
4530 | } |
4531 | } | |
c906108c | 4532 | |
802188a7 | 4533 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4534 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4535 | ||
4536 | if (val == 0) | |
4537 | { | |
d7449b42 | 4538 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4539 | val = target_write_memory (addr, (char *) big_break_insn, |
4540 | sizeof big_break_insn); | |
4541 | else | |
4542 | val = target_write_memory (addr, (char *) little_break_insn, | |
4543 | sizeof little_break_insn); | |
4544 | } | |
4545 | ||
4546 | return val; | |
4547 | #else | |
4548 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4549 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4550 | } |
4551 | ||
4552 | static int | |
fba45db2 | 4553 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4554 | { |
d01949b6 | 4555 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4556 | int bp_size; |
4557 | ||
d471ea57 | 4558 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4559 | { |
d01949b6 | 4560 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4561 | char *p = buf; |
802188a7 | 4562 | |
96baa820 JM |
4563 | *(p++) = 'z'; |
4564 | *(p++) = '0'; | |
4565 | *(p++) = ','; | |
4566 | ||
0caabb7e AC |
4567 | addr = remote_address_masked (addr); |
4568 | p += hexnumstr (p, (ULONGEST) addr); | |
4569 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4570 | sprintf (p, ",%d", bp_size); |
802188a7 | 4571 | |
96baa820 | 4572 | putpkt (buf); |
d01949b6 | 4573 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4574 | |
4575 | return (buf[0] == 'E'); | |
4576 | } | |
4577 | ||
7fec2c59 | 4578 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4579 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4580 | #else | |
4581 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4582 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4583 | } |
4584 | ||
d471ea57 AC |
4585 | static int |
4586 | watchpoint_to_Z_packet (int type) | |
4587 | { | |
4588 | switch (type) | |
4589 | { | |
4590 | case hw_write: | |
4591 | return 2; | |
4592 | break; | |
4593 | case hw_read: | |
4594 | return 3; | |
4595 | break; | |
4596 | case hw_access: | |
4597 | return 4; | |
4598 | break; | |
4599 | default: | |
8e65ff28 | 4600 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4601 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
4602 | } |
4603 | } | |
4604 | ||
3c3bea1c | 4605 | static int |
fba45db2 | 4606 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4607 | { |
d01949b6 AC |
4608 | struct remote_state *rs = get_remote_state (); |
4609 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4610 | char *p; |
d471ea57 | 4611 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4612 | |
d471ea57 | 4613 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
8a3fe4f8 | 4614 | error (_("Can't set hardware watchpoints without the '%s' (%s) packet."), |
d471ea57 AC |
4615 | remote_protocol_Z[packet].name, |
4616 | remote_protocol_Z[packet].title); | |
802188a7 | 4617 | |
d471ea57 | 4618 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4619 | p = strchr (buf, '\0'); |
4620 | addr = remote_address_masked (addr); | |
4621 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4622 | sprintf (p, ",%x", len); |
802188a7 | 4623 | |
96baa820 | 4624 | putpkt (buf); |
d01949b6 | 4625 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4626 | |
d471ea57 AC |
4627 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4628 | { | |
4629 | case PACKET_ERROR: | |
4630 | case PACKET_UNKNOWN: | |
4631 | return -1; | |
4632 | case PACKET_OK: | |
4633 | return 0; | |
4634 | } | |
8e65ff28 | 4635 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4636 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
4637 | } |
4638 | ||
d471ea57 | 4639 | |
3c3bea1c | 4640 | static int |
fba45db2 | 4641 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4642 | { |
d01949b6 AC |
4643 | struct remote_state *rs = get_remote_state (); |
4644 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4645 | char *p; |
d471ea57 AC |
4646 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4647 | ||
4648 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
8a3fe4f8 | 4649 | error (_("Can't clear hardware watchpoints without the '%s' (%s) packet."), |
d471ea57 AC |
4650 | remote_protocol_Z[packet].name, |
4651 | remote_protocol_Z[packet].title); | |
802188a7 | 4652 | |
d471ea57 | 4653 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4654 | p = strchr (buf, '\0'); |
4655 | addr = remote_address_masked (addr); | |
4656 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4657 | sprintf (p, ",%x", len); |
96baa820 | 4658 | putpkt (buf); |
d01949b6 | 4659 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4660 | |
d471ea57 AC |
4661 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4662 | { | |
4663 | case PACKET_ERROR: | |
4664 | case PACKET_UNKNOWN: | |
4665 | return -1; | |
4666 | case PACKET_OK: | |
4667 | return 0; | |
4668 | } | |
8e65ff28 | 4669 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4670 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
4671 | } |
4672 | ||
3c3bea1c | 4673 | |
501eef12 AC |
4674 | int remote_hw_watchpoint_limit = -1; |
4675 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4676 | |
b9362cc7 | 4677 | static int |
3c3bea1c | 4678 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4679 | { |
3c3bea1c GS |
4680 | if (type == bp_hardware_breakpoint) |
4681 | { | |
4682 | if (remote_hw_breakpoint_limit == 0) | |
4683 | return 0; | |
501eef12 AC |
4684 | else if (remote_hw_breakpoint_limit < 0) |
4685 | return 1; | |
3c3bea1c GS |
4686 | else if (cnt <= remote_hw_breakpoint_limit) |
4687 | return 1; | |
4688 | } | |
4689 | else | |
4690 | { | |
4691 | if (remote_hw_watchpoint_limit == 0) | |
4692 | return 0; | |
501eef12 AC |
4693 | else if (remote_hw_watchpoint_limit < 0) |
4694 | return 1; | |
3c3bea1c GS |
4695 | else if (ot) |
4696 | return -1; | |
4697 | else if (cnt <= remote_hw_watchpoint_limit) | |
4698 | return 1; | |
4699 | } | |
4700 | return -1; | |
4701 | } | |
4702 | ||
b9362cc7 | 4703 | static int |
3c3bea1c GS |
4704 | remote_stopped_by_watchpoint (void) |
4705 | { | |
4706 | return remote_stopped_by_watchpoint_p; | |
4707 | } | |
4708 | ||
7270d8f2 OF |
4709 | extern int stepped_after_stopped_by_watchpoint; |
4710 | ||
4aa7a7f5 JJ |
4711 | static int |
4712 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4713 | { |
4aa7a7f5 | 4714 | int rc = 0; |
7270d8f2 OF |
4715 | if (remote_stopped_by_watchpoint () |
4716 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4717 | { |
4718 | *addr_p = remote_watch_data_address; | |
4719 | rc = 1; | |
4720 | } | |
4721 | ||
4722 | return rc; | |
3c3bea1c GS |
4723 | } |
4724 | ||
4725 | ||
4726 | static int | |
4727 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4728 | { | |
4729 | int len = 0; | |
d01949b6 AC |
4730 | struct remote_state *rs = get_remote_state (); |
4731 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4732 | char *p = buf; |
802188a7 | 4733 | |
c8189ed1 GS |
4734 | /* The length field should be set to the size of a breakpoint |
4735 | instruction. */ | |
4736 | ||
802188a7 | 4737 | BREAKPOINT_FROM_PC (&addr, &len); |
3c3bea1c | 4738 | |
d471ea57 | 4739 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
8a3fe4f8 | 4740 | error (_("Can't set hardware breakpoint without the '%s' (%s) packet."), |
d471ea57 AC |
4741 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, |
4742 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4743 | |
96baa820 JM |
4744 | *(p++) = 'Z'; |
4745 | *(p++) = '1'; | |
4746 | *(p++) = ','; | |
802188a7 | 4747 | |
96baa820 JM |
4748 | addr = remote_address_masked (addr); |
4749 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4750 | sprintf (p, ",%x", len); |
96baa820 JM |
4751 | |
4752 | putpkt (buf); | |
d01949b6 | 4753 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4754 | |
d471ea57 AC |
4755 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4756 | { | |
4757 | case PACKET_ERROR: | |
4758 | case PACKET_UNKNOWN: | |
4759 | return -1; | |
4760 | case PACKET_OK: | |
4761 | return 0; | |
4762 | } | |
8e65ff28 | 4763 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4764 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
4765 | } |
4766 | ||
d471ea57 | 4767 | |
802188a7 | 4768 | static int |
3c3bea1c | 4769 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) |
96baa820 | 4770 | { |
3c3bea1c | 4771 | int len; |
d01949b6 AC |
4772 | struct remote_state *rs = get_remote_state (); |
4773 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4774 | char *p = buf; |
c8189ed1 GS |
4775 | |
4776 | /* The length field should be set to the size of a breakpoint | |
4777 | instruction. */ | |
4778 | ||
4779 | BREAKPOINT_FROM_PC (&addr, &len); | |
4780 | ||
d471ea57 | 4781 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
8a3fe4f8 | 4782 | error (_("Can't clear hardware breakpoint without the '%s' (%s) packet."), |
d471ea57 AC |
4783 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, |
4784 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4785 | |
96baa820 JM |
4786 | *(p++) = 'z'; |
4787 | *(p++) = '1'; | |
4788 | *(p++) = ','; | |
802188a7 | 4789 | |
96baa820 JM |
4790 | addr = remote_address_masked (addr); |
4791 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4792 | sprintf (p, ",%x", len); |
96baa820 JM |
4793 | |
4794 | putpkt(buf); | |
d01949b6 | 4795 | getpkt (buf, (rs->remote_packet_size), 0); |
802188a7 | 4796 | |
d471ea57 AC |
4797 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4798 | { | |
4799 | case PACKET_ERROR: | |
4800 | case PACKET_UNKNOWN: | |
4801 | return -1; | |
4802 | case PACKET_OK: | |
4803 | return 0; | |
4804 | } | |
8e65ff28 | 4805 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4806 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 4807 | } |
96baa820 | 4808 | |
c906108c SS |
4809 | /* Some targets are only capable of doing downloads, and afterwards |
4810 | they switch to the remote serial protocol. This function provides | |
4811 | a clean way to get from the download target to the remote target. | |
4812 | It's basically just a wrapper so that we don't have to expose any | |
4813 | of the internal workings of remote.c. | |
4814 | ||
4815 | Prior to calling this routine, you should shutdown the current | |
4816 | target code, else you will get the "A program is being debugged | |
4817 | already..." message. Usually a call to pop_target() suffices. */ | |
4818 | ||
4819 | void | |
fba45db2 | 4820 | push_remote_target (char *name, int from_tty) |
c906108c | 4821 | { |
a3f17187 | 4822 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
4823 | remote_open (name, from_tty); |
4824 | } | |
4825 | ||
23860348 | 4826 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 4827 | |
c5aa993b JM |
4828 | static unsigned long crc32_table[256] = |
4829 | {0, 0}; | |
c906108c SS |
4830 | |
4831 | static unsigned long | |
fba45db2 | 4832 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4833 | { |
c5aa993b | 4834 | if (!crc32_table[1]) |
c906108c | 4835 | { |
23860348 | 4836 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
4837 | int i, j; |
4838 | unsigned int c; | |
4839 | ||
4840 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4841 | { |
4842 | for (c = i << 24, j = 8; j > 0; --j) | |
4843 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4844 | crc32_table[i] = c; | |
4845 | } | |
c906108c SS |
4846 | } |
4847 | ||
4848 | while (len--) | |
4849 | { | |
4850 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4851 | buf++; | |
4852 | } | |
4853 | return crc; | |
4854 | } | |
4855 | ||
4856 | /* compare-sections command | |
4857 | ||
4858 | With no arguments, compares each loadable section in the exec bfd | |
4859 | with the same memory range on the target, and reports mismatches. | |
4860 | Useful for verifying the image on the target against the exec file. | |
4861 | Depends on the target understanding the new "qCRC:" request. */ | |
4862 | ||
e514a9d6 JM |
4863 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4864 | target method (target verify memory) and generic version of the | |
4865 | actual command. This will allow other high-level code (especially | |
23860348 | 4866 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 4867 | |
c906108c | 4868 | static void |
fba45db2 | 4869 | compare_sections_command (char *args, int from_tty) |
c906108c | 4870 | { |
d01949b6 | 4871 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4872 | asection *s; |
4873 | unsigned long host_crc, target_crc; | |
4874 | extern bfd *exec_bfd; | |
4875 | struct cleanup *old_chain; | |
085dd6e6 JM |
4876 | char *tmp; |
4877 | char *sectdata; | |
ce359b09 | 4878 | const char *sectname; |
d01949b6 | 4879 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4880 | bfd_size_type size; |
4881 | bfd_vma lma; | |
4882 | int matched = 0; | |
4883 | int mismatched = 0; | |
4884 | ||
4885 | if (!exec_bfd) | |
8a3fe4f8 | 4886 | error (_("command cannot be used without an exec file")); |
c906108c SS |
4887 | if (!current_target.to_shortname || |
4888 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 4889 | error (_("command can only be used with remote target")); |
c906108c | 4890 | |
c5aa993b | 4891 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4892 | { |
4893 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4894 | continue; /* skip non-loadable section */ |
c906108c | 4895 | |
2c500098 | 4896 | size = bfd_get_section_size (s); |
c906108c | 4897 | if (size == 0) |
c5aa993b | 4898 | continue; /* skip zero-length section */ |
c906108c | 4899 | |
ce359b09 | 4900 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4901 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4902 | continue; /* not the section selected by user */ |
c906108c | 4903 | |
c5aa993b | 4904 | matched = 1; /* do this section */ |
c906108c | 4905 | lma = s->lma; |
23860348 | 4906 | /* FIXME: assumes lma can fit into long. */ |
c906108c SS |
4907 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); |
4908 | putpkt (buf); | |
4909 | ||
23860348 MS |
4910 | /* Be clever; compute the host_crc before waiting for target |
4911 | reply. */ | |
c906108c | 4912 | sectdata = xmalloc (size); |
b8c9b27d | 4913 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4914 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4915 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4916 | ||
d01949b6 | 4917 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 4918 | if (buf[0] == 'E') |
8a3fe4f8 | 4919 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 4920 | sectname, paddr (lma), paddr (lma + size)); |
c906108c | 4921 | if (buf[0] != 'C') |
8a3fe4f8 | 4922 | error (_("remote target does not support this operation")); |
c906108c SS |
4923 | |
4924 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4925 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4926 | ||
d4f3574e SS |
4927 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4928 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4929 | if (host_crc == target_crc) |
4930 | printf_filtered ("matched.\n"); | |
4931 | else | |
c5aa993b JM |
4932 | { |
4933 | printf_filtered ("MIS-MATCHED!\n"); | |
4934 | mismatched++; | |
4935 | } | |
c906108c SS |
4936 | |
4937 | do_cleanups (old_chain); | |
4938 | } | |
4939 | if (mismatched > 0) | |
8a3fe4f8 AC |
4940 | warning (_("One or more sections of the remote executable does not match\n\ |
4941 | the loaded file\n")); | |
c906108c | 4942 | if (args && !matched) |
a3f17187 | 4943 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
4944 | } |
4945 | ||
1e3ff5ad | 4946 | static LONGEST |
4b8a223f | 4947 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
8aa91c1e | 4948 | const char *annex, void *readbuf, const void *writebuf, |
1e3ff5ad | 4949 | ULONGEST offset, LONGEST len) |
c906108c | 4950 | { |
d01949b6 | 4951 | struct remote_state *rs = get_remote_state (); |
c906108c | 4952 | int i; |
d01949b6 | 4953 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 4954 | char *p2 = &buf2[0]; |
1e3ff5ad | 4955 | char query_type; |
c906108c | 4956 | |
21e3b9b9 DJ |
4957 | /* Handle memory using remote_xfer_memory. */ |
4958 | if (object == TARGET_OBJECT_MEMORY) | |
4959 | { | |
4960 | int xfered; | |
4961 | errno = 0; | |
4962 | ||
4963 | if (writebuf != NULL) | |
4964 | { | |
4965 | void *buffer = xmalloc (len); | |
4966 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4967 | memcpy (buffer, writebuf, len); | |
4968 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4969 | do_cleanups (cleanup); | |
4970 | } | |
4971 | else | |
4972 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4973 | ||
4974 | if (xfered > 0) | |
4975 | return xfered; | |
4976 | else if (xfered == 0 && errno == 0) | |
4977 | return 0; | |
4978 | else | |
4979 | return -1; | |
4980 | } | |
4981 | ||
4b8a223f AC |
4982 | /* Only handle reads. */ |
4983 | if (writebuf != NULL || readbuf == NULL) | |
4984 | return -1; | |
4985 | ||
1e3ff5ad AC |
4986 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4987 | objects!!! Instead specify new query packets. */ | |
4988 | switch (object) | |
c906108c | 4989 | { |
1e3ff5ad AC |
4990 | case TARGET_OBJECT_KOD: |
4991 | query_type = 'K'; | |
4992 | break; | |
4993 | case TARGET_OBJECT_AVR: | |
4994 | query_type = 'R'; | |
4995 | break; | |
802188a7 RM |
4996 | |
4997 | case TARGET_OBJECT_AUXV: | |
4998 | if (remote_protocol_qPart_auxv.support != PACKET_DISABLE) | |
4999 | { | |
5000 | unsigned int total = 0; | |
5001 | while (len > 0) | |
5002 | { | |
5003 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
5004 | snprintf (buf2, rs->remote_packet_size, | |
5005 | "qPart:auxv:read::%s,%s", | |
5006 | phex_nz (offset, sizeof offset), | |
5007 | phex_nz (n, sizeof n)); | |
5008 | i = putpkt (buf2); | |
5009 | if (i < 0) | |
5010 | return total > 0 ? total : i; | |
5011 | buf2[0] = '\0'; | |
5012 | getpkt (buf2, rs->remote_packet_size, 0); | |
5013 | if (packet_ok (buf2, &remote_protocol_qPart_auxv) != PACKET_OK) | |
5014 | return total > 0 ? total : -1; | |
5015 | if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0') | |
5016 | break; /* Got EOF indicator. */ | |
5017 | /* Got some data. */ | |
5018 | i = hex2bin (buf2, readbuf, len); | |
5019 | if (i > 0) | |
5020 | { | |
5021 | readbuf = (void *) ((char *) readbuf + i); | |
5022 | offset += i; | |
5023 | len -= i; | |
5024 | total += i; | |
5025 | } | |
5026 | } | |
5027 | return total; | |
5028 | } | |
5029 | return -1; | |
5030 | ||
1e3ff5ad | 5031 | default: |
c906108c SS |
5032 | return -1; |
5033 | } | |
5034 | ||
4b8a223f | 5035 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5036 | buffer size. */ |
4b8a223f | 5037 | if (offset == 0 && len == 0) |
1e3ff5ad AC |
5038 | return (rs->remote_packet_size); |
5039 | /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is | |
5040 | not large enough let the caller. */ | |
5041 | if (len < (rs->remote_packet_size)) | |
5042 | return -1; | |
5043 | len = rs->remote_packet_size; | |
5044 | ||
23860348 | 5045 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5046 | if (!remote_desc) |
8a3fe4f8 | 5047 | error (_("remote query is only available after target open")); |
c906108c | 5048 | |
1e3ff5ad | 5049 | gdb_assert (annex != NULL); |
4b8a223f | 5050 | gdb_assert (readbuf != NULL); |
c906108c SS |
5051 | |
5052 | *p2++ = 'q'; | |
5053 | *p2++ = query_type; | |
5054 | ||
23860348 MS |
5055 | /* We used one buffer char for the remote protocol q command and |
5056 | another for the query type. As the remote protocol encapsulation | |
5057 | uses 4 chars plus one extra in case we are debugging | |
5058 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5059 | string. */ | |
c906108c | 5060 | i = 0; |
1e3ff5ad | 5061 | while (annex[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c | 5062 | { |
1e3ff5ad AC |
5063 | /* Bad caller may have sent forbidden characters. */ |
5064 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5065 | *p2++ = annex[i]; | |
c906108c SS |
5066 | i++; |
5067 | } | |
1e3ff5ad AC |
5068 | *p2 = '\0'; |
5069 | gdb_assert (annex[i] == '\0'); | |
c906108c SS |
5070 | |
5071 | i = putpkt (buf2); | |
c5aa993b JM |
5072 | if (i < 0) |
5073 | return i; | |
c906108c | 5074 | |
4b8a223f | 5075 | getpkt (readbuf, len, 0); |
c906108c | 5076 | |
4b8a223f | 5077 | return strlen (readbuf); |
c906108c SS |
5078 | } |
5079 | ||
96baa820 JM |
5080 | static void |
5081 | remote_rcmd (char *command, | |
d9fcf2fb | 5082 | struct ui_file *outbuf) |
96baa820 | 5083 | { |
d01949b6 | 5084 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5085 | int i; |
d01949b6 | 5086 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5087 | char *p = buf; |
5088 | ||
5089 | if (!remote_desc) | |
8a3fe4f8 | 5090 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5091 | |
23860348 | 5092 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5093 | if (command == NULL) |
5094 | command = ""; | |
5095 | ||
23860348 | 5096 | /* The query prefix. */ |
96baa820 JM |
5097 | strcpy (buf, "qRcmd,"); |
5098 | p = strchr (buf, '\0'); | |
5099 | ||
d01949b6 | 5100 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
8a3fe4f8 | 5101 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5102 | |
23860348 | 5103 | /* Encode the actual command. */ |
30559e10 | 5104 | bin2hex (command, p, 0); |
96baa820 JM |
5105 | |
5106 | if (putpkt (buf) < 0) | |
8a3fe4f8 | 5107 | error (_("Communication problem with target.")); |
96baa820 JM |
5108 | |
5109 | /* get/display the response */ | |
5110 | while (1) | |
5111 | { | |
23860348 | 5112 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
96baa820 | 5113 | buf[0] = '\0'; |
d01949b6 | 5114 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 5115 | if (buf[0] == '\0') |
8a3fe4f8 | 5116 | error (_("Target does not support this command.")); |
96baa820 JM |
5117 | if (buf[0] == 'O' && buf[1] != 'K') |
5118 | { | |
23860348 | 5119 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5120 | continue; |
5121 | } | |
5122 | if (strcmp (buf, "OK") == 0) | |
5123 | break; | |
7be570e7 JM |
5124 | if (strlen (buf) == 3 && buf[0] == 'E' |
5125 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5126 | { | |
8a3fe4f8 | 5127 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5128 | } |
96baa820 JM |
5129 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5130 | { | |
5131 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5132 | fputc_unfiltered (c, outbuf); | |
5133 | } | |
5134 | break; | |
5135 | } | |
5136 | } | |
5137 | ||
c906108c | 5138 | static void |
fba45db2 | 5139 | packet_command (char *args, int from_tty) |
c906108c | 5140 | { |
d01949b6 AC |
5141 | struct remote_state *rs = get_remote_state (); |
5142 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5143 | |
c5aa993b | 5144 | if (!remote_desc) |
8a3fe4f8 | 5145 | error (_("command can only be used with remote target")); |
c906108c | 5146 | |
c5aa993b | 5147 | if (!args) |
8a3fe4f8 | 5148 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5149 | |
5150 | puts_filtered ("sending: "); | |
5151 | print_packet (args); | |
5152 | puts_filtered ("\n"); | |
5153 | putpkt (args); | |
5154 | ||
d01949b6 | 5155 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5156 | puts_filtered ("received: "); |
5157 | print_packet (buf); | |
5158 | puts_filtered ("\n"); | |
5159 | } | |
5160 | ||
5161 | #if 0 | |
23860348 | 5162 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5163 | |
a14ed312 | 5164 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5165 | |
a14ed312 | 5166 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5167 | |
a14ed312 | 5168 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5169 | |
a14ed312 | 5170 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5171 | |
23860348 | 5172 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5173 | |
a14ed312 | 5174 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5175 | |
23860348 | 5176 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5177 | |
a14ed312 | 5178 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5179 | |
a14ed312 | 5180 | static void init_remote_threadtests (void); |
c906108c | 5181 | |
23860348 | 5182 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5183 | |
5184 | static void | |
fba45db2 | 5185 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5186 | { |
5187 | int sample_thread = SAMPLE_THREAD; | |
5188 | ||
a3f17187 | 5189 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5190 | set_thread (sample_thread, 1); |
5191 | } | |
5192 | ||
5193 | ||
5194 | static void | |
fba45db2 | 5195 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5196 | { |
5197 | int sample_thread = SAMPLE_THREAD; | |
5198 | ||
39f77062 | 5199 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5200 | printf_filtered ("PASS: Thread alive test\n"); |
5201 | else | |
5202 | printf_filtered ("FAIL: Thread alive test\n"); | |
5203 | } | |
5204 | ||
23860348 | 5205 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5206 | |
5207 | void | |
fba45db2 | 5208 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5209 | { |
5210 | char hexid[20]; | |
5211 | ||
23860348 | 5212 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5213 | hexid[16] = 0; |
5214 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5215 | } | |
5216 | ||
5217 | static void | |
fba45db2 | 5218 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5219 | { |
5220 | int startflag = 1; | |
5221 | threadref nextthread; | |
5222 | int done, result_count; | |
5223 | threadref threadlist[3]; | |
5224 | ||
5225 | printf_filtered ("Remote Threadlist test\n"); | |
5226 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5227 | &result_count, &threadlist[0])) | |
5228 | printf_filtered ("FAIL: threadlist test\n"); | |
5229 | else | |
5230 | { | |
5231 | threadref *scan = threadlist; | |
5232 | threadref *limit = scan + result_count; | |
5233 | ||
5234 | while (scan < limit) | |
5235 | output_threadid (" thread ", scan++); | |
5236 | } | |
5237 | } | |
5238 | ||
5239 | void | |
fba45db2 | 5240 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5241 | { |
5242 | output_threadid ("Threadid: ", &info->threadid); | |
5243 | printf_filtered ("Name: %s\n ", info->shortname); | |
5244 | printf_filtered ("State: %s\n", info->display); | |
5245 | printf_filtered ("other: %s\n\n", info->more_display); | |
5246 | } | |
5247 | ||
5248 | int | |
fba45db2 | 5249 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5250 | { |
5251 | int result; | |
5252 | int set; | |
5253 | struct gdb_ext_thread_info threadinfo; | |
5254 | ||
5255 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5256 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5257 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5258 | display_thread_info (&threadinfo); | |
5259 | return result; | |
5260 | } | |
5261 | ||
5262 | static void | |
fba45db2 | 5263 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5264 | { |
5265 | int athread = SAMPLE_THREAD; | |
5266 | threadref thread; | |
5267 | int set; | |
5268 | ||
5269 | int_to_threadref (&thread, athread); | |
5270 | printf_filtered ("Remote Threadinfo test\n"); | |
5271 | if (!get_and_display_threadinfo (&thread)) | |
5272 | printf_filtered ("FAIL cannot get thread info\n"); | |
5273 | } | |
5274 | ||
5275 | static int | |
fba45db2 | 5276 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5277 | { |
5278 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5279 | return get_and_display_threadinfo (ref); | |
5280 | } | |
5281 | ||
5282 | static void | |
fba45db2 | 5283 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5284 | { |
5285 | printf_filtered ("Remote Threadlist update test\n"); | |
5286 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5287 | } | |
5288 | ||
5289 | static void | |
5290 | init_remote_threadtests (void) | |
5291 | { | |
1bedd215 AC |
5292 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5293 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5294 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5295 | _("Fetch and display info about one thread")); |
c906108c | 5296 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5297 | _("Test setting to a different thread")); |
c906108c | 5298 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5299 | _("Iterate through updating all remote thread info")); |
c906108c | 5300 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5301 | _(" Remote thread alive test ")); |
c906108c SS |
5302 | } |
5303 | ||
5304 | #endif /* 0 */ | |
5305 | ||
f3fb8c85 MS |
5306 | /* Convert a thread ID to a string. Returns the string in a static |
5307 | buffer. */ | |
5308 | ||
5309 | static char * | |
39f77062 | 5310 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5311 | { |
5312 | static char buf[30]; | |
5313 | ||
39f77062 | 5314 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5315 | return buf; |
5316 | } | |
5317 | ||
c906108c | 5318 | static void |
fba45db2 | 5319 | init_remote_ops (void) |
c906108c | 5320 | { |
c5aa993b | 5321 | remote_ops.to_shortname = "remote"; |
c906108c | 5322 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5323 | remote_ops.to_doc = |
c906108c | 5324 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5325 | Specify the serial device it is connected to\n\ |
5326 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5327 | remote_ops.to_open = remote_open; |
5328 | remote_ops.to_close = remote_close; | |
c906108c | 5329 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5330 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5331 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5332 | remote_ops.to_wait = remote_wait; |
5333 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5334 | remote_ops.to_store_registers = remote_store_registers; | |
5335 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5336 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5337 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5338 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5339 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5340 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5341 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5342 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5343 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5344 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5345 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5346 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5347 | remote_ops.to_kill = remote_kill; |
5348 | remote_ops.to_load = generic_load; | |
c906108c SS |
5349 | remote_ops.to_mourn_inferior = remote_mourn; |
5350 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5351 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5352 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5353 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5354 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5355 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5356 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5357 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5358 | remote_ops.to_has_all_memory = 1; |
5359 | remote_ops.to_has_memory = 1; | |
5360 | remote_ops.to_has_stack = 1; | |
5361 | remote_ops.to_has_registers = 1; | |
5362 | remote_ops.to_has_execution = 1; | |
5363 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5364 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5365 | } |
5366 | ||
5367 | /* Set up the extended remote vector by making a copy of the standard | |
5368 | remote vector and adding to it. */ | |
5369 | ||
5370 | static void | |
fba45db2 | 5371 | init_extended_remote_ops (void) |
c906108c SS |
5372 | { |
5373 | extended_remote_ops = remote_ops; | |
5374 | ||
0f71a2f6 | 5375 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5376 | extended_remote_ops.to_longname = |
c906108c | 5377 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5378 | extended_remote_ops.to_doc = |
c906108c SS |
5379 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5380 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5381 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5382 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5383 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5384 | } |
5385 | ||
6426a772 JM |
5386 | static int |
5387 | remote_can_async_p (void) | |
5388 | { | |
23860348 | 5389 | /* We're async whenever the serial device is. */ |
2cd58942 | 5390 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5391 | } |
5392 | ||
5393 | static int | |
5394 | remote_is_async_p (void) | |
5395 | { | |
23860348 | 5396 | /* We're async whenever the serial device is. */ |
2cd58942 | 5397 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5398 | } |
5399 | ||
2acceee2 JM |
5400 | /* Pass the SERIAL event on and up to the client. One day this code |
5401 | will be able to delay notifying the client of an event until the | |
23860348 | 5402 | point where an entire packet has been received. */ |
2acceee2 | 5403 | |
23860348 MS |
5404 | static void (*async_client_callback) (enum inferior_event_type event_type, |
5405 | void *context); | |
2acceee2 JM |
5406 | static void *async_client_context; |
5407 | static serial_event_ftype remote_async_serial_handler; | |
5408 | ||
6426a772 | 5409 | static void |
819cc324 | 5410 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5411 | { |
2acceee2 JM |
5412 | /* Don't propogate error information up to the client. Instead let |
5413 | the client find out about the error by querying the target. */ | |
5414 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5415 | } | |
5416 | ||
5417 | static void | |
23860348 MS |
5418 | remote_async (void (*callback) (enum inferior_event_type event_type, |
5419 | void *context), void *context) | |
2acceee2 | 5420 | { |
ed9a39eb | 5421 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5422 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5423 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5424 | |
2acceee2 JM |
5425 | if (callback != NULL) |
5426 | { | |
2cd58942 | 5427 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5428 | async_client_callback = callback; |
5429 | async_client_context = context; | |
5430 | } | |
5431 | else | |
2cd58942 | 5432 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5433 | } |
5434 | ||
43ff13b4 JM |
5435 | /* Target async and target extended-async. |
5436 | ||
5437 | This are temporary targets, until it is all tested. Eventually | |
5438 | async support will be incorporated int the usual 'remote' | |
23860348 | 5439 | target. */ |
43ff13b4 JM |
5440 | |
5441 | static void | |
c2d11a7d | 5442 | init_remote_async_ops (void) |
43ff13b4 JM |
5443 | { |
5444 | remote_async_ops.to_shortname = "async"; | |
23860348 MS |
5445 | remote_async_ops.to_longname = |
5446 | "Remote serial target in async version of the gdb-specific protocol"; | |
c5aa993b | 5447 | remote_async_ops.to_doc = |
43ff13b4 JM |
5448 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5449 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5450 | remote_async_ops.to_open = remote_async_open; |
5451 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5452 | remote_async_ops.to_detach = remote_detach; |
5453 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5454 | remote_async_ops.to_resume = remote_async_resume; |
5455 | remote_async_ops.to_wait = remote_async_wait; | |
5456 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5457 | remote_async_ops.to_store_registers = remote_store_registers; | |
5458 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5459 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5460 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5461 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5462 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5463 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5464 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5465 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5466 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5467 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5468 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5469 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5470 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5471 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5472 | remote_async_ops.to_kill = remote_async_kill; |
5473 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5474 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5475 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5476 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5477 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5478 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5479 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5480 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5481 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5482 | remote_async_ops.to_stratum = process_stratum; |
5483 | remote_async_ops.to_has_all_memory = 1; | |
5484 | remote_async_ops.to_has_memory = 1; | |
5485 | remote_async_ops.to_has_stack = 1; | |
5486 | remote_async_ops.to_has_registers = 1; | |
5487 | remote_async_ops.to_has_execution = 1; | |
5488 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5489 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5490 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5491 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5492 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5493 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5494 | } |
5495 | ||
5496 | /* Set up the async extended remote vector by making a copy of the standard | |
5497 | remote vector and adding to it. */ | |
5498 | ||
5499 | static void | |
c2d11a7d | 5500 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5501 | { |
5502 | extended_async_remote_ops = remote_async_ops; | |
5503 | ||
5504 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5505 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5506 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5507 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5508 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5509 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5510 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5511 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5512 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5513 | } | |
5514 | ||
5a2468f5 | 5515 | static void |
c2d11a7d | 5516 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5517 | { |
5a2468f5 JM |
5518 | } |
5519 | ||
d471ea57 AC |
5520 | static void |
5521 | show_remote_cmd (char *args, int from_tty) | |
5522 | { | |
e9e68a56 AC |
5523 | /* FIXME: cagney/2002-06-15: This function should iterate over |
5524 | remote_show_cmdlist for a list of sub commands to show. */ | |
08546159 AC |
5525 | show_remote_protocol_Z_packet_cmd (gdb_stdout, from_tty, NULL, NULL); |
5526 | show_remote_protocol_P_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_qSymbol_packet_cmd (gdb_stdout, from_tty, NULL, NULL); | |
5529 | show_remote_protocol_vcont_packet_cmd (gdb_stdout, from_tty, NULL, NULL); | |
5530 | show_remote_protocol_binary_download_cmd (gdb_stdout, from_tty, NULL, NULL); | |
5531 | show_remote_protocol_qPart_auxv_packet_cmd (gdb_stdout, from_tty, NULL, NULL); | |
d471ea57 | 5532 | } |
5a2468f5 | 5533 | |
0f71a2f6 | 5534 | static void |
fba45db2 | 5535 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5536 | { |
d696208f | 5537 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5538 | } |
5539 | ||
23860348 | 5540 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
5541 | static void (*remote_new_objfile_chain) (struct objfile *); |
5542 | ||
23860348 | 5543 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
5544 | static void |
5545 | remote_new_objfile (struct objfile *objfile) | |
5546 | { | |
23860348 | 5547 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
5548 | { |
5549 | remote_check_symbols (objfile); | |
5550 | } | |
23860348 | 5551 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
5552 | if (remote_new_objfile_chain != 0 && |
5553 | remote_desc == 0) | |
5554 | remote_new_objfile_chain (objfile); | |
5555 | } | |
5556 | ||
c906108c | 5557 | void |
fba45db2 | 5558 | _initialize_remote (void) |
c906108c | 5559 | { |
5a2468f5 JM |
5560 | static struct cmd_list_element *remote_set_cmdlist; |
5561 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5562 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5563 | |
0f71a2f6 | 5564 | /* architecture specific data */ |
23860348 MS |
5565 | remote_gdbarch_data_handle = |
5566 | gdbarch_data_register_post_init (init_remote_state); | |
d01949b6 AC |
5567 | |
5568 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5569 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5570 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5571 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5572 | |
c906108c SS |
5573 | init_remote_ops (); |
5574 | add_target (&remote_ops); | |
5575 | ||
5576 | init_extended_remote_ops (); | |
5577 | add_target (&extended_remote_ops); | |
cce74817 | 5578 | |
43ff13b4 JM |
5579 | init_remote_async_ops (); |
5580 | add_target (&remote_async_ops); | |
5581 | ||
5582 | init_extended_async_remote_ops (); | |
5583 | add_target (&extended_async_remote_ops); | |
5584 | ||
dc8acb97 | 5585 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5586 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5587 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5588 | |
c906108c SS |
5589 | #if 0 |
5590 | init_remote_threadtests (); | |
5591 | #endif | |
5592 | ||
23860348 | 5593 | /* set/show remote ... */ |
d471ea57 | 5594 | |
1bedd215 | 5595 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
5596 | Remote protocol specific variables\n\ |
5597 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5598 | the packets being used"), |
cff3e48b | 5599 | &remote_set_cmdlist, "set remote ", |
23860348 | 5600 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 5601 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
5602 | Remote protocol specific variables\n\ |
5603 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5604 | the packets being used"), |
cff3e48b | 5605 | &remote_show_cmdlist, "show remote ", |
23860348 | 5606 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 5607 | |
1a966eab AC |
5608 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
5609 | Compare section data on target to the exec file.\n\ | |
5610 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
5611 | &cmdlist); |
5612 | ||
1a966eab AC |
5613 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
5614 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
5615 | maintenance packet TEXT\n\ |
5616 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5617 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5618 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 5619 | terminating `#' character and checksum."), |
c906108c SS |
5620 | &maintenancelist); |
5621 | ||
7915a72c AC |
5622 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
5623 | Set whether to send break if interrupted."), _("\ | |
5624 | Show whether to send break if interrupted."), _("\ | |
5625 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 5626 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 5627 | &setlist, &showlist); |
c906108c | 5628 | |
23860348 | 5629 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 5630 | |
1a966eab AC |
5631 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
5632 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 5633 | &setlist); |
1a966eab AC |
5634 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
5635 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
5636 | &showlist); |
5637 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
5638 | set_memory_write_packet_size, _("\ |
5639 | Set the maximum number of bytes per memory-write packet.\n\ | |
5640 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5641 | default packet size. The actual limit is further reduced\n\ | |
5642 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5643 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5644 | &remote_set_cmdlist); |
5645 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
5646 | set_memory_read_packet_size, _("\ |
5647 | Set the maximum number of bytes per memory-read packet.\n\ | |
5648 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5649 | default packet size. The actual limit is further reduced\n\ | |
5650 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5651 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5652 | &remote_set_cmdlist); |
5653 | add_cmd ("memory-write-packet-size", no_class, | |
5654 | show_memory_write_packet_size, | |
1a966eab | 5655 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
5656 | &remote_show_cmdlist); |
5657 | add_cmd ("memory-read-packet-size", no_class, | |
5658 | show_memory_read_packet_size, | |
1a966eab | 5659 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 5660 | &remote_show_cmdlist); |
c906108c | 5661 | |
b3f42336 | 5662 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
5663 | &remote_hw_watchpoint_limit, _("\ |
5664 | Set the maximum number of target hardware watchpoints."), _("\ | |
5665 | Show the maximum number of target hardware watchpoints."), _("\ | |
5666 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5667 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
5668 | &remote_set_cmdlist, &remote_show_cmdlist); |
5669 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
5670 | &remote_hw_breakpoint_limit, _("\ |
5671 | Set the maximum number of target hardware breakpoints."), _("\ | |
5672 | Show the maximum number of target hardware breakpoints."), _("\ | |
5673 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5674 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 5675 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 5676 | |
4d28ad1e AC |
5677 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
5678 | &remote_address_size, _("\ | |
5679 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
5680 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
5681 | NULL, | |
5682 | NULL, /* FIXME: i18n: */ | |
5683 | &setlist, &showlist); | |
c906108c | 5684 | |
96baa820 JM |
5685 | add_packet_config_cmd (&remote_protocol_binary_download, |
5686 | "X", "binary-download", | |
5687 | set_remote_protocol_binary_download_cmd, | |
5688 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5689 | &remote_set_cmdlist, &remote_show_cmdlist, |
5690 | 1); | |
0f71a2f6 | 5691 | |
506fb367 DJ |
5692 | add_packet_config_cmd (&remote_protocol_vcont, |
5693 | "vCont", "verbose-resume", | |
5694 | set_remote_protocol_vcont_packet_cmd, | |
5695 | show_remote_protocol_vcont_packet_cmd, | |
5696 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5697 | 0); | |
5698 | ||
dc8acb97 MS |
5699 | add_packet_config_cmd (&remote_protocol_qSymbol, |
5700 | "qSymbol", "symbol-lookup", | |
5701 | set_remote_protocol_qSymbol_packet_cmd, | |
5702 | show_remote_protocol_qSymbol_packet_cmd, | |
5703 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5704 | 0); | |
5705 | ||
d471ea57 AC |
5706 | add_packet_config_cmd (&remote_protocol_P, |
5707 | "P", "set-register", | |
5a2468f5 JM |
5708 | set_remote_protocol_P_packet_cmd, |
5709 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5710 | &remote_set_cmdlist, &remote_show_cmdlist, |
5711 | 1); | |
5712 | ||
b96ec7ac AC |
5713 | add_packet_config_cmd (&remote_protocol_p, |
5714 | "p", "fetch-register", | |
5715 | set_remote_protocol_p_packet_cmd, | |
5716 | show_remote_protocol_p_packet_cmd, | |
5717 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5718 | 1); | |
5719 | ||
d471ea57 AC |
5720 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], |
5721 | "Z0", "software-breakpoint", | |
5722 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5723 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5724 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5725 | 0); | |
5726 | ||
5727 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5728 | "Z1", "hardware-breakpoint", | |
5729 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5730 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5731 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5732 | 0); | |
5733 | ||
5734 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5735 | "Z2", "write-watchpoint", | |
5736 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5737 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5738 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5739 | 0); | |
5740 | ||
5741 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5742 | "Z3", "read-watchpoint", | |
5743 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5744 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5745 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5746 | 0); | |
5747 | ||
5748 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5749 | "Z4", "access-watchpoint", | |
5750 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5751 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5752 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5753 | 0); | |
5754 | ||
802188a7 RM |
5755 | add_packet_config_cmd (&remote_protocol_qPart_auxv, |
5756 | "qPart_auxv", "read-aux-vector", | |
5757 | set_remote_protocol_qPart_auxv_packet_cmd, | |
5758 | show_remote_protocol_qPart_auxv_packet_cmd, | |
5759 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5760 | 0); | |
5761 | ||
23860348 | 5762 | /* Keep the old ``set remote Z-packet ...'' working. */ |
e9e68a56 | 5763 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
5764 | &remote_Z_packet_detect, _("\ |
5765 | Set use of remote protocol `Z' packets"), _("\ | |
5766 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 5767 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 5768 | packets."), |
e9e68a56 | 5769 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 5770 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 5771 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
5772 | |
5773 | /* Eventually initialize fileio. See fileio.c */ | |
5774 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5775 | } |