Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c AC |
2 | |
3 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, | |
4 | 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b JM |
6 | This file is part of GDB. |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c5aa993b | 22 | |
96baa820 | 23 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 24 | |
c906108c SS |
25 | #include "defs.h" |
26 | #include "gdb_string.h" | |
27 | #include <ctype.h> | |
28 | #include <fcntl.h> | |
c906108c SS |
29 | #include "inferior.h" |
30 | #include "bfd.h" | |
31 | #include "symfile.h" | |
32 | #include "target.h" | |
c5aa993b | 33 | /*#include "terminal.h" */ |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "objfiles.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "gdbthread.h" | |
c2c6d25f | 38 | #include "remote.h" |
4e052eda | 39 | #include "regcache.h" |
fd0407d6 | 40 | #include "value.h" |
1ff9c3d6 | 41 | #include "gdb_assert.h" |
c906108c | 42 | |
7a292a7a | 43 | #include <ctype.h> |
9846de1b | 44 | #include <sys/time.h> |
c906108c SS |
45 | #ifdef USG |
46 | #include <sys/types.h> | |
47 | #endif | |
48 | ||
43ff13b4 | 49 | #include "event-loop.h" |
c2c6d25f | 50 | #include "event-top.h" |
2acceee2 | 51 | #include "inf-loop.h" |
43ff13b4 | 52 | |
c906108c SS |
53 | #include <signal.h> |
54 | #include "serial.h" | |
55 | ||
6240bebf MS |
56 | #include "gdbcore.h" /* for exec_bfd */ |
57 | ||
449092f6 CV |
58 | #include "remote-fileio.h" |
59 | ||
c906108c | 60 | /* Prototypes for local functions */ |
6426a772 JM |
61 | static void cleanup_sigint_signal_handler (void *dummy); |
62 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 63 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 64 | |
a14ed312 KB |
65 | static void handle_remote_sigint (int); |
66 | static void handle_remote_sigint_twice (int); | |
67 | static void async_remote_interrupt (gdb_client_data); | |
68 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 69 | |
a14ed312 | 70 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 71 | |
a14ed312 | 72 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 73 | |
a14ed312 KB |
74 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
75 | int len, int should_write, | |
29e57380 | 76 | struct mem_attrib *attrib, |
a14ed312 | 77 | struct target_ops *target); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_prepare_to_store (void); |
c906108c | 80 | |
a14ed312 | 81 | static void remote_fetch_registers (int regno); |
c906108c | 82 | |
39f77062 KB |
83 | static void remote_resume (ptid_t ptid, int step, |
84 | enum target_signal siggnal); | |
85 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 86 | enum target_signal siggnal); |
36918e70 | 87 | static int remote_start_remote (struct ui_out *uiout, void *dummy); |
c906108c | 88 | |
a14ed312 KB |
89 | static void remote_open (char *name, int from_tty); |
90 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 91 | |
a14ed312 KB |
92 | static void extended_remote_open (char *name, int from_tty); |
93 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 94 | |
92d1e331 DJ |
95 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
96 | int async_p); | |
c906108c | 97 | |
a14ed312 | 98 | static void remote_close (int quitting); |
c906108c | 99 | |
a14ed312 | 100 | static void remote_store_registers (int regno); |
c906108c | 101 | |
a14ed312 KB |
102 | static void remote_mourn (void); |
103 | static void remote_async_mourn (void); | |
c906108c | 104 | |
a14ed312 | 105 | static void extended_remote_restart (void); |
c906108c | 106 | |
a14ed312 | 107 | static void extended_remote_mourn (void); |
c906108c | 108 | |
a14ed312 KB |
109 | static void extended_remote_create_inferior (char *, char *, char **); |
110 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 111 | |
a14ed312 | 112 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 113 | |
c2d11a7d | 114 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 115 | |
a14ed312 | 116 | static int readchar (int timeout); |
c906108c | 117 | |
39f77062 KB |
118 | static ptid_t remote_wait (ptid_t ptid, |
119 | struct target_waitstatus *status); | |
120 | static ptid_t remote_async_wait (ptid_t ptid, | |
121 | struct target_waitstatus *status); | |
c906108c | 122 | |
a14ed312 KB |
123 | static void remote_kill (void); |
124 | static void remote_async_kill (void); | |
c906108c | 125 | |
a14ed312 | 126 | static int tohex (int nib); |
c906108c | 127 | |
a14ed312 | 128 | static void remote_detach (char *args, int from_tty); |
c906108c | 129 | |
a14ed312 | 130 | static void remote_interrupt (int signo); |
c906108c | 131 | |
a14ed312 | 132 | static void remote_interrupt_twice (int signo); |
7a292a7a | 133 | |
a14ed312 | 134 | static void interrupt_query (void); |
c906108c | 135 | |
a14ed312 | 136 | static void set_thread (int, int); |
c906108c | 137 | |
39f77062 | 138 | static int remote_thread_alive (ptid_t); |
c906108c | 139 | |
a14ed312 | 140 | static void get_offsets (void); |
c906108c | 141 | |
c2d11a7d | 142 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 143 | |
a14ed312 | 144 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 145 | |
a14ed312 | 146 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 147 | |
a14ed312 | 148 | static int hexnumlen (ULONGEST num); |
c906108c | 149 | |
a14ed312 | 150 | static void init_remote_ops (void); |
c906108c | 151 | |
a14ed312 | 152 | static void init_extended_remote_ops (void); |
c906108c | 153 | |
a14ed312 | 154 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
155 | |
156 | static struct target_ops remote_cisco_ops; | |
157 | ||
a14ed312 | 158 | static void remote_stop (void); |
c906108c | 159 | |
a14ed312 | 160 | static int ishex (int ch, int *val); |
c906108c | 161 | |
a14ed312 | 162 | static int stubhex (int ch); |
c906108c | 163 | |
a14ed312 | 164 | static int remote_query (int /*char */ , char *, char *, int *); |
c906108c | 165 | |
a14ed312 | 166 | static int hexnumstr (char *, ULONGEST); |
c906108c | 167 | |
a14ed312 | 168 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 169 | |
a14ed312 | 170 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 171 | |
a14ed312 | 172 | static void print_packet (char *); |
c906108c | 173 | |
a14ed312 | 174 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 175 | |
a14ed312 | 176 | static void compare_sections_command (char *, int); |
c906108c | 177 | |
a14ed312 | 178 | static void packet_command (char *, int); |
c906108c | 179 | |
a14ed312 | 180 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 181 | |
39f77062 | 182 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 183 | |
a14ed312 | 184 | static void remote_find_new_threads (void); |
c906108c | 185 | |
a14ed312 | 186 | static void record_currthread (int currthread); |
c906108c | 187 | |
30559e10 | 188 | static int fromhex (int a); |
c906108c | 189 | |
dc8acb97 | 190 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 191 | |
dc8acb97 | 192 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 193 | |
a14ed312 | 194 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 195 | |
a14ed312 | 196 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 197 | |
5a2468f5 | 198 | struct packet_config; |
5a2468f5 | 199 | |
a14ed312 | 200 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 201 | |
d471ea57 | 202 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 203 | |
a14ed312 | 204 | void _initialize_remote (void); |
c906108c | 205 | |
694f61fb | 206 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
207 | target is open()ed, remote.c should create a per-target description |
208 | of the remote protocol using that target's architecture. | |
209 | Unfortunatly, the target stack doesn't include local state. For | |
210 | the moment keep the information in the target's architecture | |
211 | object. Sigh.. */ | |
212 | ||
ad10f812 AC |
213 | struct packet_reg |
214 | { | |
215 | long offset; /* Offset into G packet. */ | |
216 | long regnum; /* GDB's internal register number. */ | |
217 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 218 | int in_g_packet; /* Always part of G packet. */ |
ad10f812 AC |
219 | /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */ |
220 | /* char *name; == REGISTER_NAME (regnum); at present. */ | |
221 | }; | |
222 | ||
d01949b6 AC |
223 | struct remote_state |
224 | { | |
ad10f812 AC |
225 | /* Description of the remote protocol registers. */ |
226 | long sizeof_g_packet; | |
b323314b AC |
227 | |
228 | /* Description of the remote protocol registers indexed by REGNUM | |
229 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
230 | struct packet_reg *regs; | |
ad10f812 | 231 | |
d01949b6 AC |
232 | /* This is the size (in chars) of the first response to the ``g'' |
233 | packet. It is used as a heuristic when determining the maximum | |
234 | size of memory-read and memory-write packets. A target will | |
235 | typically only reserve a buffer large enough to hold the ``g'' | |
236 | packet. The size does not include packet overhead (headers and | |
237 | trailers). */ | |
238 | long actual_register_packet_size; | |
239 | ||
240 | /* This is the maximum size (in chars) of a non read/write packet. | |
241 | It is also used as a cap on the size of read/write packets. */ | |
242 | long remote_packet_size; | |
243 | }; | |
244 | ||
3c3bea1c | 245 | |
d01949b6 AC |
246 | /* Handle for retreving the remote protocol data from gdbarch. */ |
247 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
248 | ||
249 | static struct remote_state * | |
5ae5f592 | 250 | get_remote_state (void) |
d01949b6 | 251 | { |
451fbdda | 252 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
253 | } |
254 | ||
255 | static void * | |
256 | init_remote_state (struct gdbarch *gdbarch) | |
257 | { | |
258 | int regnum; | |
259 | struct remote_state *rs = xmalloc (sizeof (struct remote_state)); | |
260 | ||
7d58c67d TR |
261 | if (DEPRECATED_REGISTER_BYTES != 0) |
262 | rs->sizeof_g_packet = DEPRECATED_REGISTER_BYTES; | |
263 | else | |
264 | rs->sizeof_g_packet = 0; | |
ad10f812 | 265 | |
b323314b AC |
266 | /* Assume a 1:1 regnum<->pnum table. */ |
267 | rs->regs = xcalloc (NUM_REGS + NUM_PSEUDO_REGS, sizeof (struct packet_reg)); | |
268 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) | |
ad10f812 | 269 | { |
b323314b AC |
270 | struct packet_reg *r = &rs->regs[regnum]; |
271 | r->pnum = regnum; | |
272 | r->regnum = regnum; | |
273 | r->offset = REGISTER_BYTE (regnum); | |
274 | r->in_g_packet = (regnum < NUM_REGS); | |
ad10f812 | 275 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d TR |
276 | |
277 | /* Compute packet size by accumulating the size of all registers. */ | |
278 | if (DEPRECATED_REGISTER_BYTES == 0) | |
279 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); | |
ad10f812 AC |
280 | } |
281 | ||
d01949b6 AC |
282 | /* Default maximum number of characters in a packet body. Many |
283 | remote stubs have a hardwired buffer size of 400 bytes | |
284 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
285 | as the maximum packet-size to ensure that the packet and an extra | |
286 | NUL character can always fit in the buffer. This stops GDB | |
287 | trashing stubs that try to squeeze an extra NUL into what is | |
288 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
289 | rs->remote_packet_size = 400 - 1; | |
290 | ||
ad10f812 AC |
291 | /* Should rs->sizeof_g_packet needs more space than the |
292 | default, adjust the size accordingly. Remember that each byte is | |
293 | encoded as two characters. 32 is the overhead for the packet | |
294 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 AC |
295 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
296 | little. */ | |
ad10f812 AC |
297 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
298 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
d01949b6 AC |
299 | |
300 | /* This one is filled in when a ``g'' packet is received. */ | |
301 | rs->actual_register_packet_size = 0; | |
302 | ||
303 | return rs; | |
304 | } | |
305 | ||
306 | static void | |
307 | free_remote_state (struct gdbarch *gdbarch, void *pointer) | |
308 | { | |
ad10f812 | 309 | struct remote_state *data = pointer; |
b323314b | 310 | xfree (data->regs); |
ad10f812 AC |
311 | xfree (data); |
312 | } | |
313 | ||
314 | static struct packet_reg * | |
315 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
316 | { | |
b323314b AC |
317 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
318 | return NULL; | |
319 | else | |
ad10f812 | 320 | { |
b323314b AC |
321 | struct packet_reg *r = &rs->regs[regnum]; |
322 | gdb_assert (r->regnum == regnum); | |
323 | return r; | |
ad10f812 | 324 | } |
ad10f812 AC |
325 | } |
326 | ||
327 | static struct packet_reg * | |
328 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
329 | { | |
b323314b AC |
330 | int i; |
331 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 332 | { |
b323314b AC |
333 | struct packet_reg *r = &rs->regs[i]; |
334 | if (r->pnum == pnum) | |
335 | return r; | |
ad10f812 AC |
336 | } |
337 | return NULL; | |
d01949b6 AC |
338 | } |
339 | ||
3c3bea1c GS |
340 | /* FIXME: graces/2002-08-08: These variables should eventually be |
341 | bound to an instance of the target object (as in gdbarch-tdep()), | |
342 | when such a thing exists. */ | |
343 | ||
344 | /* This is set to the data address of the access causing the target | |
345 | to stop for a watchpoint. */ | |
346 | static CORE_ADDR remote_watch_data_address; | |
347 | ||
348 | /* This is non-zero if taregt stopped for a watchpoint. */ | |
349 | static int remote_stopped_by_watchpoint_p; | |
350 | ||
c906108c SS |
351 | |
352 | static struct target_ops remote_ops; | |
353 | ||
354 | static struct target_ops extended_remote_ops; | |
355 | ||
43ff13b4 JM |
356 | /* Temporary target ops. Just like the remote_ops and |
357 | extended_remote_ops, but with asynchronous support. */ | |
358 | static struct target_ops remote_async_ops; | |
359 | ||
360 | static struct target_ops extended_async_remote_ops; | |
361 | ||
6426a772 JM |
362 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
363 | ``forever'' still use the normal timeout mechanism. This is | |
364 | currently used by the ASYNC code to guarentee that target reads | |
365 | during the initial connect always time-out. Once getpkt has been | |
366 | modified to return a timeout indication and, in turn | |
367 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
368 | this can go away. */ | |
369 | static int wait_forever_enabled_p = 1; | |
370 | ||
371 | ||
c906108c SS |
372 | /* This variable chooses whether to send a ^C or a break when the user |
373 | requests program interruption. Although ^C is usually what remote | |
374 | systems expect, and that is the default here, sometimes a break is | |
375 | preferable instead. */ | |
376 | ||
377 | static int remote_break; | |
378 | ||
c906108c SS |
379 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
380 | remote_open knows that we don't have a file open when the program | |
381 | starts. */ | |
819cc324 | 382 | static struct serial *remote_desc = NULL; |
c906108c | 383 | |
0f71a2f6 JM |
384 | /* This is set by the target (thru the 'S' message) |
385 | to denote that the target is in kernel mode. */ | |
386 | static int cisco_kernel_mode = 0; | |
387 | ||
c906108c SS |
388 | /* This variable sets the number of bits in an address that are to be |
389 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
390 | leading zeros, the entire address would be sent. This variable | |
391 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
392 | initial implementation of remote.c restricted the address sent in | |
393 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
394 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
395 | address was never sent. Since fixing this bug may cause a break in | |
396 | some remote targets this variable is principly provided to | |
397 | facilitate backward compatibility. */ | |
398 | ||
399 | static int remote_address_size; | |
400 | ||
6426a772 JM |
401 | /* Tempoary to track who currently owns the terminal. See |
402 | target_async_terminal_* for more details. */ | |
403 | ||
404 | static int remote_async_terminal_ours_p; | |
405 | ||
11cf8741 | 406 | \f |
11cf8741 | 407 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
408 | memory read/write packet. MIN ((rs->remote_packet_size), |
409 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
410 | values (fifo overruns, et.al.) and some users need larger values | |
411 | (speed up transfers). The variables ``preferred_*'' (the user | |
412 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
413 | (Positive - a soft limit, negative - a hard limit). */ | |
11cf8741 JM |
414 | |
415 | struct memory_packet_config | |
416 | { | |
417 | char *name; | |
418 | long size; | |
419 | int fixed_p; | |
420 | }; | |
421 | ||
422 | /* Compute the current size of a read/write packet. Since this makes | |
423 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
424 | ||
425 | static long | |
426 | get_memory_packet_size (struct memory_packet_config *config) | |
427 | { | |
d01949b6 | 428 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
429 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
430 | law?) that some hosts don't cope very well with large alloca() | |
431 | calls. Eventually the alloca() code will be replaced by calls to | |
432 | xmalloc() and make_cleanups() allowing this restriction to either | |
433 | be lifted or removed. */ | |
434 | #ifndef MAX_REMOTE_PACKET_SIZE | |
435 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
436 | #endif | |
437 | /* NOTE: 16 is just chosen at random. */ | |
438 | #ifndef MIN_REMOTE_PACKET_SIZE | |
439 | #define MIN_REMOTE_PACKET_SIZE 16 | |
440 | #endif | |
441 | long what_they_get; | |
442 | if (config->fixed_p) | |
443 | { | |
444 | if (config->size <= 0) | |
445 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
446 | else | |
447 | what_they_get = config->size; | |
448 | } | |
449 | else | |
450 | { | |
d01949b6 | 451 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
452 | /* Limit the packet to the size specified by the user. */ |
453 | if (config->size > 0 | |
454 | && what_they_get > config->size) | |
455 | what_they_get = config->size; | |
456 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
457 | if ((rs->actual_register_packet_size) > 0 |
458 | && what_they_get > (rs->actual_register_packet_size)) | |
459 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
460 | } |
461 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
462 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
463 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
464 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
465 | return what_they_get; | |
466 | } | |
467 | ||
468 | /* Update the size of a read/write packet. If they user wants | |
469 | something really big then do a sanity check. */ | |
470 | ||
471 | static void | |
472 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
473 | { | |
474 | int fixed_p = config->fixed_p; | |
475 | long size = config->size; | |
476 | if (args == NULL) | |
477 | error ("Argument required (integer, `fixed' or `limited')."); | |
478 | else if (strcmp (args, "hard") == 0 | |
479 | || strcmp (args, "fixed") == 0) | |
480 | fixed_p = 1; | |
481 | else if (strcmp (args, "soft") == 0 | |
482 | || strcmp (args, "limit") == 0) | |
483 | fixed_p = 0; | |
484 | else | |
485 | { | |
486 | char *end; | |
487 | size = strtoul (args, &end, 0); | |
488 | if (args == end) | |
489 | error ("Invalid %s (bad syntax).", config->name); | |
490 | #if 0 | |
491 | /* Instead of explicitly capping the size of a packet to | |
492 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
493 | instead allowed to set the size to something arbitrarily | |
494 | large. */ | |
495 | if (size > MAX_REMOTE_PACKET_SIZE) | |
496 | error ("Invalid %s (too large).", config->name); | |
497 | #endif | |
498 | } | |
499 | /* Extra checks? */ | |
500 | if (fixed_p && !config->fixed_p) | |
501 | { | |
502 | if (! query ("The target may not be able to correctly handle a %s\n" | |
503 | "of %ld bytes. Change the packet size? ", | |
504 | config->name, size)) | |
505 | error ("Packet size not changed."); | |
506 | } | |
507 | /* Update the config. */ | |
508 | config->fixed_p = fixed_p; | |
509 | config->size = size; | |
510 | } | |
511 | ||
512 | static void | |
513 | show_memory_packet_size (struct memory_packet_config *config) | |
514 | { | |
515 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
516 | if (config->fixed_p) | |
517 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
518 | get_memory_packet_size (config)); | |
519 | else | |
520 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
521 | get_memory_packet_size (config)); | |
522 | } | |
523 | ||
524 | static struct memory_packet_config memory_write_packet_config = | |
525 | { | |
526 | "memory-write-packet-size", | |
527 | }; | |
528 | ||
529 | static void | |
530 | set_memory_write_packet_size (char *args, int from_tty) | |
531 | { | |
532 | set_memory_packet_size (args, &memory_write_packet_config); | |
533 | } | |
534 | ||
535 | static void | |
536 | show_memory_write_packet_size (char *args, int from_tty) | |
537 | { | |
538 | show_memory_packet_size (&memory_write_packet_config); | |
539 | } | |
540 | ||
541 | static long | |
542 | get_memory_write_packet_size (void) | |
543 | { | |
544 | return get_memory_packet_size (&memory_write_packet_config); | |
545 | } | |
546 | ||
547 | static struct memory_packet_config memory_read_packet_config = | |
548 | { | |
549 | "memory-read-packet-size", | |
550 | }; | |
551 | ||
552 | static void | |
553 | set_memory_read_packet_size (char *args, int from_tty) | |
554 | { | |
555 | set_memory_packet_size (args, &memory_read_packet_config); | |
556 | } | |
557 | ||
558 | static void | |
559 | show_memory_read_packet_size (char *args, int from_tty) | |
560 | { | |
561 | show_memory_packet_size (&memory_read_packet_config); | |
562 | } | |
563 | ||
564 | static long | |
565 | get_memory_read_packet_size (void) | |
566 | { | |
d01949b6 | 567 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
568 | long size = get_memory_packet_size (&memory_read_packet_config); |
569 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
570 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
571 | increased beyond (rs->remote_packet_size). */ |
572 | if (size > (rs->remote_packet_size)) | |
573 | size = (rs->remote_packet_size); | |
11cf8741 JM |
574 | return size; |
575 | } | |
576 | ||
11cf8741 | 577 | \f |
5a2468f5 JM |
578 | /* Generic configuration support for packets the stub optionally |
579 | supports. Allows the user to specify the use of the packet as well | |
580 | as allowing GDB to auto-detect support in the remote stub. */ | |
581 | ||
582 | enum packet_support | |
583 | { | |
584 | PACKET_SUPPORT_UNKNOWN = 0, | |
585 | PACKET_ENABLE, | |
586 | PACKET_DISABLE | |
587 | }; | |
588 | ||
5a2468f5 JM |
589 | struct packet_config |
590 | { | |
5a2468f5 JM |
591 | char *name; |
592 | char *title; | |
7f19b9a2 | 593 | enum auto_boolean detect; |
5a2468f5 JM |
594 | enum packet_support support; |
595 | }; | |
596 | ||
d471ea57 AC |
597 | /* Analyze a packet's return value and update the packet config |
598 | accordingly. */ | |
599 | ||
600 | enum packet_result | |
601 | { | |
602 | PACKET_ERROR, | |
603 | PACKET_OK, | |
604 | PACKET_UNKNOWN | |
605 | }; | |
606 | ||
5a2468f5 | 607 | static void |
d471ea57 | 608 | update_packet_config (struct packet_config *config) |
5a2468f5 | 609 | { |
d471ea57 AC |
610 | switch (config->detect) |
611 | { | |
7f19b9a2 | 612 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
613 | config->support = PACKET_ENABLE; |
614 | break; | |
7f19b9a2 | 615 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
616 | config->support = PACKET_DISABLE; |
617 | break; | |
7f19b9a2 | 618 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
619 | config->support = PACKET_SUPPORT_UNKNOWN; |
620 | break; | |
621 | } | |
5a2468f5 JM |
622 | } |
623 | ||
624 | static void | |
fba45db2 | 625 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
626 | { |
627 | char *support = "internal-error"; | |
628 | switch (config->support) | |
629 | { | |
630 | case PACKET_ENABLE: | |
631 | support = "enabled"; | |
632 | break; | |
633 | case PACKET_DISABLE: | |
634 | support = "disabled"; | |
635 | break; | |
636 | case PACKET_SUPPORT_UNKNOWN: | |
637 | support = "unknown"; | |
638 | break; | |
639 | } | |
640 | switch (config->detect) | |
641 | { | |
7f19b9a2 | 642 | case AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
643 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
644 | config->name, config->title, support); | |
645 | break; | |
7f19b9a2 AC |
646 | case AUTO_BOOLEAN_TRUE: |
647 | case AUTO_BOOLEAN_FALSE: | |
8e248173 | 648 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", |
5a2468f5 | 649 | config->name, config->title, support); |
8e248173 | 650 | break; |
5a2468f5 JM |
651 | } |
652 | } | |
653 | ||
654 | static void | |
d471ea57 AC |
655 | add_packet_config_cmd (struct packet_config *config, |
656 | char *name, | |
657 | char *title, | |
e9e68a56 AC |
658 | cmd_sfunc_ftype *set_func, |
659 | cmd_sfunc_ftype *show_func, | |
d471ea57 AC |
660 | struct cmd_list_element **set_remote_list, |
661 | struct cmd_list_element **show_remote_list, | |
662 | int legacy) | |
663 | { | |
664 | struct cmd_list_element *set_cmd; | |
665 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
666 | char *set_doc; |
667 | char *show_doc; | |
d471ea57 | 668 | char *cmd_name; |
5a2468f5 JM |
669 | config->name = name; |
670 | config->title = title; | |
7f19b9a2 | 671 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 672 | config->support = PACKET_SUPPORT_UNKNOWN; |
76995688 AC |
673 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
674 | name, title); | |
675 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
676 | name, title); | |
d471ea57 | 677 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 678 | xasprintf (&cmd_name, "%s-packet", title); |
e9e68a56 AC |
679 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
680 | &config->detect, set_doc, show_doc, | |
681 | set_func, show_func, | |
682 | set_remote_list, show_remote_list); | |
d471ea57 AC |
683 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ |
684 | if (legacy) | |
685 | { | |
686 | char *legacy_name; | |
76995688 | 687 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
688 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
689 | set_remote_list); | |
690 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
691 | show_remote_list); | |
692 | } | |
5a2468f5 JM |
693 | } |
694 | ||
d471ea57 AC |
695 | static enum packet_result |
696 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 697 | { |
d471ea57 | 698 | if (buf[0] != '\0') |
5a2468f5 | 699 | { |
d471ea57 AC |
700 | /* The stub recognized the packet request. Check that the |
701 | operation succeeded. */ | |
702 | switch (config->support) | |
703 | { | |
704 | case PACKET_SUPPORT_UNKNOWN: | |
705 | if (remote_debug) | |
706 | fprintf_unfiltered (gdb_stdlog, | |
707 | "Packet %s (%s) is supported\n", | |
708 | config->name, config->title); | |
709 | config->support = PACKET_ENABLE; | |
710 | break; | |
711 | case PACKET_DISABLE: | |
8e65ff28 AC |
712 | internal_error (__FILE__, __LINE__, |
713 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
714 | break; |
715 | case PACKET_ENABLE: | |
716 | break; | |
717 | } | |
718 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
719 | /* "OK" - definitly OK. */ | |
720 | return PACKET_OK; | |
721 | if (buf[0] == 'E' | |
722 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
723 | && buf[3] == '\0') | |
724 | /* "Enn" - definitly an error. */ | |
725 | return PACKET_ERROR; | |
726 | /* The packet may or may not be OK. Just assume it is */ | |
727 | return PACKET_OK; | |
728 | } | |
729 | else | |
730 | { | |
731 | /* The stub does not support the packet. */ | |
732 | switch (config->support) | |
733 | { | |
734 | case PACKET_ENABLE: | |
7f19b9a2 | 735 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 AC |
736 | /* If the stub previously indicated that the packet was |
737 | supported then there is a protocol error.. */ | |
738 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
739 | config->name, config->title); | |
740 | else | |
741 | /* The user set it wrong. */ | |
742 | error ("Enabled packet %s (%s) not recognized by stub", | |
743 | config->name, config->title); | |
744 | break; | |
745 | case PACKET_SUPPORT_UNKNOWN: | |
746 | if (remote_debug) | |
747 | fprintf_unfiltered (gdb_stdlog, | |
748 | "Packet %s (%s) is NOT supported\n", | |
749 | config->name, config->title); | |
750 | config->support = PACKET_DISABLE; | |
751 | break; | |
752 | case PACKET_DISABLE: | |
753 | break; | |
754 | } | |
755 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
756 | } |
757 | } | |
758 | ||
dc8acb97 MS |
759 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
760 | static struct packet_config remote_protocol_qSymbol; | |
761 | ||
762 | static void | |
763 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
764 | struct cmd_list_element *c) | |
765 | { | |
766 | update_packet_config (&remote_protocol_qSymbol); | |
767 | } | |
768 | ||
769 | static void | |
e9e68a56 AC |
770 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, |
771 | struct cmd_list_element *c) | |
dc8acb97 MS |
772 | { |
773 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
774 | } | |
775 | ||
44eaed12 C |
776 | /* Should we try the 'e' (step over range) request? */ |
777 | static struct packet_config remote_protocol_e; | |
778 | ||
779 | static void | |
780 | set_remote_protocol_e_packet_cmd (char *args, int from_tty, | |
781 | struct cmd_list_element *c) | |
782 | { | |
783 | update_packet_config (&remote_protocol_e); | |
784 | } | |
785 | ||
786 | static void | |
e9e68a56 AC |
787 | show_remote_protocol_e_packet_cmd (char *args, int from_tty, |
788 | struct cmd_list_element *c) | |
44eaed12 C |
789 | { |
790 | show_packet_config_cmd (&remote_protocol_e); | |
791 | } | |
792 | ||
793 | ||
794 | /* Should we try the 'E' (step over range / w signal #) request? */ | |
795 | static struct packet_config remote_protocol_E; | |
796 | ||
797 | static void | |
798 | set_remote_protocol_E_packet_cmd (char *args, int from_tty, | |
799 | struct cmd_list_element *c) | |
800 | { | |
801 | update_packet_config (&remote_protocol_E); | |
802 | } | |
803 | ||
804 | static void | |
e9e68a56 AC |
805 | show_remote_protocol_E_packet_cmd (char *args, int from_tty, |
806 | struct cmd_list_element *c) | |
44eaed12 C |
807 | { |
808 | show_packet_config_cmd (&remote_protocol_E); | |
809 | } | |
810 | ||
811 | ||
5a2468f5 JM |
812 | /* Should we try the 'P' (set register) request? */ |
813 | ||
814 | static struct packet_config remote_protocol_P; | |
815 | ||
816 | static void | |
fba45db2 KB |
817 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
818 | struct cmd_list_element *c) | |
5a2468f5 | 819 | { |
d471ea57 | 820 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
821 | } |
822 | ||
823 | static void | |
e9e68a56 AC |
824 | show_remote_protocol_P_packet_cmd (char *args, int from_tty, |
825 | struct cmd_list_element *c) | |
5a2468f5 JM |
826 | { |
827 | show_packet_config_cmd (&remote_protocol_P); | |
828 | } | |
829 | ||
d471ea57 AC |
830 | /* Should we try one of the 'Z' requests? */ |
831 | ||
832 | enum Z_packet_type | |
833 | { | |
834 | Z_PACKET_SOFTWARE_BP, | |
835 | Z_PACKET_HARDWARE_BP, | |
836 | Z_PACKET_WRITE_WP, | |
837 | Z_PACKET_READ_WP, | |
838 | Z_PACKET_ACCESS_WP, | |
839 | NR_Z_PACKET_TYPES | |
840 | }; | |
96baa820 | 841 | |
d471ea57 AC |
842 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
843 | ||
844 | /* FIXME: Instead of having all these boiler plate functions, the | |
845 | command callback should include a context argument. */ | |
846 | ||
847 | static void | |
848 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
849 | struct cmd_list_element *c) | |
850 | { | |
851 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
852 | } | |
853 | ||
854 | static void | |
e9e68a56 AC |
855 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, |
856 | struct cmd_list_element *c) | |
d471ea57 AC |
857 | { |
858 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
859 | } | |
860 | ||
861 | static void | |
862 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
863 | struct cmd_list_element *c) | |
864 | { | |
865 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
866 | } | |
867 | ||
868 | static void | |
e9e68a56 AC |
869 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, |
870 | struct cmd_list_element *c) | |
d471ea57 AC |
871 | { |
872 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
873 | } | |
874 | ||
875 | static void | |
876 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
877 | struct cmd_list_element *c) | |
878 | { | |
879 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
880 | } | |
881 | ||
882 | static void | |
e9e68a56 AC |
883 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, |
884 | struct cmd_list_element *c) | |
d471ea57 AC |
885 | { |
886 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
887 | } | |
888 | ||
889 | static void | |
890 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
891 | struct cmd_list_element *c) | |
892 | { | |
893 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
894 | } | |
895 | ||
896 | static void | |
e9e68a56 AC |
897 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, |
898 | struct cmd_list_element *c) | |
d471ea57 AC |
899 | { |
900 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
901 | } | |
902 | ||
903 | static void | |
904 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
905 | struct cmd_list_element *c) | |
906 | { | |
907 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
908 | } | |
909 | ||
910 | static void | |
e9e68a56 AC |
911 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, |
912 | struct cmd_list_element *c) | |
d471ea57 AC |
913 | { |
914 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
915 | } | |
916 | ||
917 | /* For compatibility with older distributions. Provide a ``set remote | |
918 | Z-packet ...'' command that updates all the Z packet types. */ | |
919 | ||
7f19b9a2 | 920 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
921 | |
922 | static void | |
fba45db2 KB |
923 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
924 | struct cmd_list_element *c) | |
96baa820 | 925 | { |
d471ea57 AC |
926 | int i; |
927 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
928 | { | |
929 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
930 | update_packet_config (&remote_protocol_Z[i]); | |
931 | } | |
96baa820 JM |
932 | } |
933 | ||
934 | static void | |
e9e68a56 AC |
935 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
936 | struct cmd_list_element *c) | |
96baa820 | 937 | { |
d471ea57 AC |
938 | int i; |
939 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
940 | { | |
941 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
942 | } | |
96baa820 JM |
943 | } |
944 | ||
945 | /* Should we try the 'X' (remote binary download) packet? | |
946 | ||
947 | This variable (available to the user via "set remote X-packet") | |
948 | dictates whether downloads are sent in binary (via the 'X' packet). | |
949 | We assume that the stub can, and attempt to do it. This will be | |
950 | cleared if the stub does not understand it. This switch is still | |
951 | needed, though in cases when the packet is supported in the stub, | |
952 | but the connection does not allow it (i.e., 7-bit serial connection | |
953 | only). */ | |
954 | ||
955 | static struct packet_config remote_protocol_binary_download; | |
956 | ||
9d1f7ab2 MS |
957 | /* Should we try the 'ThreadInfo' query packet? |
958 | ||
959 | This variable (NOT available to the user: auto-detect only!) | |
960 | determines whether GDB will use the new, simpler "ThreadInfo" | |
961 | query or the older, more complex syntax for thread queries. | |
962 | This is an auto-detect variable (set to true at each connect, | |
963 | and set to false when the target fails to recognize it). */ | |
964 | ||
965 | static int use_threadinfo_query; | |
966 | static int use_threadextra_query; | |
967 | ||
96baa820 JM |
968 | static void |
969 | set_remote_protocol_binary_download_cmd (char *args, | |
970 | int from_tty, | |
971 | struct cmd_list_element *c) | |
972 | { | |
d471ea57 | 973 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
974 | } |
975 | ||
976 | static void | |
e9e68a56 AC |
977 | show_remote_protocol_binary_download_cmd (char *args, int from_tty, |
978 | struct cmd_list_element *c) | |
96baa820 JM |
979 | { |
980 | show_packet_config_cmd (&remote_protocol_binary_download); | |
981 | } | |
982 | ||
c906108c | 983 | |
43ff13b4 | 984 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
ae44c0c4 AC |
985 | static void *sigint_remote_twice_token; |
986 | static void *sigint_remote_token; | |
43ff13b4 | 987 | |
c906108c SS |
988 | /* These are pointers to hook functions that may be set in order to |
989 | modify resume/wait behavior for a particular architecture. */ | |
990 | ||
507f3c78 KB |
991 | void (*target_resume_hook) (void); |
992 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
993 | \f |
994 | ||
c5aa993b | 995 | |
c906108c SS |
996 | /* These are the threads which we last sent to the remote system. |
997 | -1 for all or -2 for not sent yet. */ | |
998 | static int general_thread; | |
cce74817 | 999 | static int continue_thread; |
c906108c SS |
1000 | |
1001 | /* Call this function as a result of | |
1002 | 1) A halt indication (T packet) containing a thread id | |
1003 | 2) A direct query of currthread | |
1004 | 3) Successful execution of set thread | |
1005 | */ | |
1006 | ||
1007 | static void | |
fba45db2 | 1008 | record_currthread (int currthread) |
c906108c | 1009 | { |
c906108c | 1010 | general_thread = currthread; |
cce74817 | 1011 | |
c906108c SS |
1012 | /* If this is a new thread, add it to GDB's thread list. |
1013 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1014 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1015 | { |
39f77062 | 1016 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1017 | ui_out_text (uiout, "[New "); |
39f77062 | 1018 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1019 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1020 | } |
c906108c SS |
1021 | } |
1022 | ||
1023 | #define MAGIC_NULL_PID 42000 | |
1024 | ||
1025 | static void | |
fba45db2 | 1026 | set_thread (int th, int gen) |
c906108c | 1027 | { |
d01949b6 AC |
1028 | struct remote_state *rs = get_remote_state (); |
1029 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1030 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1031 | |
1032 | if (state == th) | |
1033 | return; | |
1034 | ||
1035 | buf[0] = 'H'; | |
1036 | buf[1] = gen ? 'g' : 'c'; | |
1037 | if (th == MAGIC_NULL_PID) | |
1038 | { | |
1039 | buf[2] = '0'; | |
1040 | buf[3] = '\0'; | |
1041 | } | |
1042 | else if (th < 0) | |
1043 | sprintf (&buf[2], "-%x", -th); | |
1044 | else | |
1045 | sprintf (&buf[2], "%x", th); | |
1046 | putpkt (buf); | |
d01949b6 | 1047 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1048 | if (gen) |
c5aa993b | 1049 | general_thread = th; |
c906108c | 1050 | else |
cce74817 | 1051 | continue_thread = th; |
c906108c SS |
1052 | } |
1053 | \f | |
1054 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1055 | ||
1056 | static int | |
39f77062 | 1057 | remote_thread_alive (ptid_t ptid) |
c906108c | 1058 | { |
39f77062 | 1059 | int tid = PIDGET (ptid); |
cce74817 | 1060 | char buf[16]; |
c906108c | 1061 | |
cce74817 JM |
1062 | if (tid < 0) |
1063 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1064 | else |
cce74817 | 1065 | sprintf (buf, "T%08x", tid); |
c906108c | 1066 | putpkt (buf); |
c2d11a7d | 1067 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1068 | return (buf[0] == 'O' && buf[1] == 'K'); |
1069 | } | |
1070 | ||
1071 | /* About these extended threadlist and threadinfo packets. They are | |
1072 | variable length packets but, the fields within them are often fixed | |
1073 | length. They are redundent enough to send over UDP as is the | |
1074 | remote protocol in general. There is a matching unit test module | |
1075 | in libstub. */ | |
1076 | ||
cce74817 JM |
1077 | #define OPAQUETHREADBYTES 8 |
1078 | ||
1079 | /* a 64 bit opaque identifier */ | |
1080 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1081 | ||
1082 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1083 | protocol encoding, and remote.c. it is not particularly changable */ | |
1084 | ||
1085 | /* Right now, the internal structure is int. We want it to be bigger. | |
1086 | Plan to fix this. | |
c5aa993b | 1087 | */ |
cce74817 | 1088 | |
c5aa993b | 1089 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1090 | |
9d1f7ab2 | 1091 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1092 | equivalint to the reply of the remote threadinfo packet */ |
1093 | ||
1094 | struct gdb_ext_thread_info | |
c5aa993b JM |
1095 | { |
1096 | threadref threadid; /* External form of thread reference */ | |
1097 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1098 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1099 | char shortname[32]; /* To be used to name threads */ | |
1100 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1101 | }; | |
cce74817 JM |
1102 | |
1103 | /* The volume of remote transfers can be limited by submitting | |
1104 | a mask containing bits specifying the desired information. | |
1105 | Use a union of these values as the 'selection' parameter to | |
1106 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1107 | */ |
cce74817 JM |
1108 | |
1109 | #define TAG_THREADID 1 | |
1110 | #define TAG_EXISTS 2 | |
1111 | #define TAG_DISPLAY 4 | |
1112 | #define TAG_THREADNAME 8 | |
c5aa993b | 1113 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1114 | |
c906108c SS |
1115 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1116 | ||
b2dd6311 | 1117 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1118 | |
a14ed312 | 1119 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1120 | |
a14ed312 | 1121 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1122 | |
a14ed312 | 1123 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1124 | |
a14ed312 | 1125 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1126 | |
a14ed312 | 1127 | static char *pack_int (char *buf, int value); |
cce74817 | 1128 | |
a14ed312 | 1129 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1130 | |
a14ed312 | 1131 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1132 | |
a14ed312 | 1133 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1134 | |
a14ed312 | 1135 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1136 | |
a14ed312 | 1137 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1138 | |
a14ed312 | 1139 | static int threadref_to_int (threadref * ref); |
cce74817 | 1140 | |
a14ed312 | 1141 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1142 | |
a14ed312 | 1143 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1144 | |
a14ed312 | 1145 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1146 | |
a14ed312 KB |
1147 | static int remote_unpack_thread_info_response (char *pkt, |
1148 | threadref * expectedref, | |
1149 | struct gdb_ext_thread_info | |
1150 | *info); | |
cce74817 JM |
1151 | |
1152 | ||
a14ed312 KB |
1153 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1154 | struct gdb_ext_thread_info *info); | |
cce74817 | 1155 | |
a14ed312 KB |
1156 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1157 | int selection, | |
1158 | struct gdb_ext_thread_info *info); | |
cce74817 | 1159 | |
a14ed312 KB |
1160 | static char *pack_threadlist_request (char *pkt, int startflag, |
1161 | int threadcount, | |
1162 | threadref * nextthread); | |
cce74817 | 1163 | |
a14ed312 KB |
1164 | static int parse_threadlist_response (char *pkt, |
1165 | int result_limit, | |
1166 | threadref * original_echo, | |
1167 | threadref * resultlist, int *doneflag); | |
cce74817 | 1168 | |
a14ed312 KB |
1169 | static int remote_get_threadlist (int startflag, |
1170 | threadref * nextthread, | |
1171 | int result_limit, | |
1172 | int *done, | |
1173 | int *result_count, threadref * threadlist); | |
cce74817 | 1174 | |
c5aa993b | 1175 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1176 | |
a14ed312 KB |
1177 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1178 | void *context, int looplimit); | |
cce74817 | 1179 | |
a14ed312 | 1180 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1181 | |
c906108c SS |
1182 | /* encode 64 bits in 16 chars of hex */ |
1183 | ||
1184 | static const char hexchars[] = "0123456789abcdef"; | |
1185 | ||
1186 | static int | |
fba45db2 | 1187 | ishex (int ch, int *val) |
c906108c SS |
1188 | { |
1189 | if ((ch >= 'a') && (ch <= 'f')) | |
1190 | { | |
1191 | *val = ch - 'a' + 10; | |
1192 | return 1; | |
1193 | } | |
1194 | if ((ch >= 'A') && (ch <= 'F')) | |
1195 | { | |
1196 | *val = ch - 'A' + 10; | |
1197 | return 1; | |
1198 | } | |
1199 | if ((ch >= '0') && (ch <= '9')) | |
1200 | { | |
1201 | *val = ch - '0'; | |
1202 | return 1; | |
1203 | } | |
1204 | return 0; | |
1205 | } | |
1206 | ||
1207 | static int | |
fba45db2 | 1208 | stubhex (int ch) |
c906108c SS |
1209 | { |
1210 | if (ch >= 'a' && ch <= 'f') | |
1211 | return ch - 'a' + 10; | |
1212 | if (ch >= '0' && ch <= '9') | |
1213 | return ch - '0'; | |
1214 | if (ch >= 'A' && ch <= 'F') | |
1215 | return ch - 'A' + 10; | |
1216 | return -1; | |
1217 | } | |
1218 | ||
1219 | static int | |
fba45db2 | 1220 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1221 | { |
1222 | int nibble; | |
1223 | int retval = 0; | |
1224 | ||
1225 | while (fieldlength) | |
1226 | { | |
1227 | nibble = stubhex (*buff++); | |
1228 | retval |= nibble; | |
1229 | fieldlength--; | |
1230 | if (fieldlength) | |
1231 | retval = retval << 4; | |
1232 | } | |
1233 | return retval; | |
1234 | } | |
1235 | ||
1236 | char * | |
fba45db2 | 1237 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1238 | ULONGEST *result) |
c906108c SS |
1239 | { |
1240 | int nibble; | |
1241 | int retval = 0; | |
1242 | ||
1243 | while (ishex (*buff, &nibble)) | |
1244 | { | |
1245 | buff++; | |
1246 | retval = retval << 4; | |
1247 | retval |= nibble & 0x0f; | |
1248 | } | |
1249 | *result = retval; | |
1250 | return buff; | |
1251 | } | |
1252 | ||
1253 | static char * | |
fba45db2 | 1254 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1255 | { |
1256 | ishex (*buf++, val); | |
1257 | return buf; | |
1258 | } | |
1259 | ||
1260 | static char * | |
fba45db2 | 1261 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1262 | { |
1263 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1264 | return buf; | |
1265 | } | |
1266 | ||
1267 | static char * | |
fba45db2 | 1268 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1269 | { |
1270 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1271 | *pkt++ = hexchars[(byte & 0xf)]; | |
1272 | return pkt; | |
1273 | } | |
1274 | ||
1275 | static char * | |
fba45db2 | 1276 | unpack_byte (char *buf, int *value) |
c906108c SS |
1277 | { |
1278 | *value = stub_unpack_int (buf, 2); | |
1279 | return buf + 2; | |
1280 | } | |
1281 | ||
1282 | static char * | |
fba45db2 | 1283 | pack_int (char *buf, int value) |
c906108c SS |
1284 | { |
1285 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1286 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1287 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1288 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1289 | return buf; | |
1290 | } | |
1291 | ||
1292 | static char * | |
fba45db2 | 1293 | unpack_int (char *buf, int *value) |
c906108c SS |
1294 | { |
1295 | *value = stub_unpack_int (buf, 8); | |
1296 | return buf + 8; | |
1297 | } | |
1298 | ||
c5aa993b | 1299 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1300 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1301 | |
1302 | static char * | |
fba45db2 | 1303 | pack_string (char *pkt, char *string) |
c906108c SS |
1304 | { |
1305 | char ch; | |
1306 | int len; | |
1307 | ||
1308 | len = strlen (string); | |
1309 | if (len > 200) | |
1310 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1311 | pkt = pack_hex_byte (pkt, len); | |
1312 | while (len-- > 0) | |
1313 | { | |
1314 | ch = *string++; | |
1315 | if ((ch == '\0') || (ch == '#')) | |
1316 | ch = '*'; /* Protect encapsulation */ | |
1317 | *pkt++ = ch; | |
1318 | } | |
1319 | return pkt; | |
1320 | } | |
1321 | #endif /* 0 (unused) */ | |
1322 | ||
1323 | static char * | |
fba45db2 | 1324 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1325 | { |
1326 | while (length--) | |
1327 | *dest++ = *src++; | |
1328 | *dest = '\0'; | |
1329 | return src; | |
1330 | } | |
1331 | ||
1332 | static char * | |
fba45db2 | 1333 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1334 | { |
1335 | char *limit; | |
1336 | unsigned char *altid; | |
1337 | ||
1338 | altid = (unsigned char *) id; | |
1339 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1340 | while (pkt < limit) | |
1341 | pkt = pack_hex_byte (pkt, *altid++); | |
1342 | return pkt; | |
1343 | } | |
1344 | ||
1345 | ||
1346 | static char * | |
fba45db2 | 1347 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1348 | { |
1349 | char *altref; | |
1350 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1351 | int x, y; | |
1352 | ||
1353 | altref = (char *) id; | |
1354 | ||
1355 | while (inbuf < limit) | |
1356 | { | |
1357 | x = stubhex (*inbuf++); | |
1358 | y = stubhex (*inbuf++); | |
1359 | *altref++ = (x << 4) | y; | |
1360 | } | |
1361 | return inbuf; | |
1362 | } | |
1363 | ||
1364 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1365 | ints. This is due to a mismatch of specifications. We would like | |
1366 | to use 64bit thread references internally. This is an adapter | |
1367 | function. */ | |
1368 | ||
1369 | void | |
fba45db2 | 1370 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1371 | { |
1372 | unsigned char *scan; | |
1373 | ||
1374 | scan = (unsigned char *) id; | |
1375 | { | |
1376 | int i = 4; | |
1377 | while (i--) | |
1378 | *scan++ = 0; | |
1379 | } | |
1380 | *scan++ = (value >> 24) & 0xff; | |
1381 | *scan++ = (value >> 16) & 0xff; | |
1382 | *scan++ = (value >> 8) & 0xff; | |
1383 | *scan++ = (value & 0xff); | |
1384 | } | |
1385 | ||
1386 | static int | |
fba45db2 | 1387 | threadref_to_int (threadref *ref) |
c906108c SS |
1388 | { |
1389 | int i, value = 0; | |
1390 | unsigned char *scan; | |
1391 | ||
1392 | scan = (char *) ref; | |
1393 | scan += 4; | |
1394 | i = 4; | |
1395 | while (i-- > 0) | |
1396 | value = (value << 8) | ((*scan++) & 0xff); | |
1397 | return value; | |
1398 | } | |
1399 | ||
1400 | static void | |
fba45db2 | 1401 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1402 | { |
1403 | int i; | |
1404 | unsigned char *csrc, *cdest; | |
1405 | ||
1406 | csrc = (unsigned char *) src; | |
1407 | cdest = (unsigned char *) dest; | |
1408 | i = 8; | |
1409 | while (i--) | |
1410 | *cdest++ = *csrc++; | |
1411 | } | |
1412 | ||
1413 | static int | |
fba45db2 | 1414 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1415 | { |
1416 | /* things are broken right now, so just assume we got a match */ | |
1417 | #if 0 | |
1418 | unsigned char *srcp, *destp; | |
1419 | int i, result; | |
1420 | srcp = (char *) src; | |
1421 | destp = (char *) dest; | |
1422 | ||
1423 | result = 1; | |
1424 | while (i-- > 0) | |
1425 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1426 | return result; | |
1427 | #endif | |
1428 | return 1; | |
1429 | } | |
1430 | ||
1431 | /* | |
c5aa993b JM |
1432 | threadid:1, # always request threadid |
1433 | context_exists:2, | |
1434 | display:4, | |
1435 | unique_name:8, | |
1436 | more_display:16 | |
1437 | */ | |
c906108c SS |
1438 | |
1439 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1440 | ||
1441 | static char * | |
fba45db2 | 1442 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1443 | { |
1444 | *pkt++ = 'q'; /* Info Query */ | |
1445 | *pkt++ = 'P'; /* process or thread info */ | |
1446 | pkt = pack_int (pkt, mode); /* mode */ | |
1447 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1448 | *pkt = '\0'; /* terminate */ | |
1449 | return pkt; | |
1450 | } | |
1451 | ||
1452 | /* These values tag the fields in a thread info response packet */ | |
1453 | /* Tagging the fields allows us to request specific fields and to | |
1454 | add more fields as time goes by */ | |
1455 | ||
c5aa993b JM |
1456 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1457 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1458 | fetch registers and its stack */ | |
1459 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1460 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1461 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1462 | the process */ | |
c906108c SS |
1463 | |
1464 | static int | |
fba45db2 KB |
1465 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1466 | struct gdb_ext_thread_info *info) | |
c906108c | 1467 | { |
d01949b6 | 1468 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1469 | int mask, length; |
1470 | unsigned int tag; | |
1471 | threadref ref; | |
d01949b6 | 1472 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1473 | int retval = 1; |
1474 | ||
1475 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1476 | info->active = 0; | |
1477 | info->display[0] = '\0'; | |
1478 | info->shortname[0] = '\0'; | |
1479 | info->more_display[0] = '\0'; | |
1480 | ||
1481 | /* Assume the characters indicating the packet type have been stripped */ | |
1482 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1483 | pkt = unpack_threadid (pkt, &ref); | |
1484 | ||
1485 | if (mask == 0) | |
1486 | warning ("Incomplete response to threadinfo request\n"); | |
1487 | if (!threadmatch (&ref, expectedref)) | |
1488 | { /* This is an answer to a different request */ | |
1489 | warning ("ERROR RMT Thread info mismatch\n"); | |
1490 | return 0; | |
1491 | } | |
1492 | copy_threadref (&info->threadid, &ref); | |
1493 | ||
1494 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1495 | ||
c5aa993b | 1496 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1497 | { |
1498 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1499 | pkt = unpack_byte (pkt, &length); /* length */ | |
1500 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1501 | { | |
1502 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1503 | retval = 0; | |
1504 | break; | |
1505 | } | |
1506 | if (tag == TAG_THREADID) | |
1507 | { | |
1508 | if (length != 16) | |
1509 | { | |
1510 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1511 | retval = 0; | |
1512 | break; | |
1513 | } | |
1514 | pkt = unpack_threadid (pkt, &ref); | |
1515 | mask = mask & ~TAG_THREADID; | |
1516 | continue; | |
1517 | } | |
1518 | if (tag == TAG_EXISTS) | |
1519 | { | |
1520 | info->active = stub_unpack_int (pkt, length); | |
1521 | pkt += length; | |
1522 | mask = mask & ~(TAG_EXISTS); | |
1523 | if (length > 8) | |
1524 | { | |
1525 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1526 | retval = 0; | |
1527 | break; | |
1528 | } | |
1529 | continue; | |
1530 | } | |
1531 | if (tag == TAG_THREADNAME) | |
1532 | { | |
1533 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1534 | mask = mask & ~TAG_THREADNAME; | |
1535 | continue; | |
1536 | } | |
1537 | if (tag == TAG_DISPLAY) | |
1538 | { | |
1539 | pkt = unpack_string (pkt, &info->display[0], length); | |
1540 | mask = mask & ~TAG_DISPLAY; | |
1541 | continue; | |
1542 | } | |
1543 | if (tag == TAG_MOREDISPLAY) | |
1544 | { | |
1545 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1546 | mask = mask & ~TAG_MOREDISPLAY; | |
1547 | continue; | |
1548 | } | |
1549 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1550 | break; /* Not a tag we know about */ | |
1551 | } | |
1552 | return retval; | |
1553 | } | |
1554 | ||
1555 | static int | |
fba45db2 KB |
1556 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1557 | struct gdb_ext_thread_info *info) | |
c906108c | 1558 | { |
d01949b6 | 1559 | struct remote_state *rs = get_remote_state (); |
c906108c | 1560 | int result; |
d01949b6 | 1561 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1562 | |
1563 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1564 | putpkt (threadinfo_pkt); | |
d01949b6 | 1565 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1566 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1567 | info); | |
1568 | return result; | |
1569 | } | |
1570 | ||
1571 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1572 | representation of a threadid. */ | |
1573 | ||
1574 | static int | |
fba45db2 KB |
1575 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1576 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1577 | { |
1578 | threadref lclref; | |
1579 | ||
1580 | int_to_threadref (&lclref, *ref); | |
1581 | return remote_get_threadinfo (&lclref, selection, info); | |
1582 | } | |
1583 | ||
1584 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1585 | ||
1586 | static char * | |
fba45db2 KB |
1587 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1588 | threadref *nextthread) | |
c906108c SS |
1589 | { |
1590 | *pkt++ = 'q'; /* info query packet */ | |
1591 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1592 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1593 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1594 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1595 | *pkt = '\0'; | |
1596 | return pkt; | |
1597 | } | |
1598 | ||
1599 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1600 | ||
1601 | static int | |
fba45db2 KB |
1602 | parse_threadlist_response (char *pkt, int result_limit, |
1603 | threadref *original_echo, threadref *resultlist, | |
1604 | int *doneflag) | |
c906108c | 1605 | { |
d01949b6 | 1606 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1607 | char *limit; |
1608 | int count, resultcount, done; | |
1609 | ||
1610 | resultcount = 0; | |
1611 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1612 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1613 | pkt = unpack_byte (pkt, &count); /* count field */ |
1614 | pkt = unpack_nibble (pkt, &done); | |
1615 | /* The first threadid is the argument threadid. */ | |
1616 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1617 | while ((count-- > 0) && (pkt < limit)) | |
1618 | { | |
1619 | pkt = unpack_threadid (pkt, resultlist++); | |
1620 | if (resultcount++ >= result_limit) | |
1621 | break; | |
1622 | } | |
1623 | if (doneflag) | |
1624 | *doneflag = done; | |
1625 | return resultcount; | |
1626 | } | |
1627 | ||
1628 | static int | |
fba45db2 KB |
1629 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1630 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1631 | { |
d01949b6 | 1632 | struct remote_state *rs = get_remote_state (); |
c906108c | 1633 | static threadref echo_nextthread; |
d01949b6 AC |
1634 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1635 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1636 | int result = 1; |
1637 | ||
1638 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1639 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1640 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1641 | |
1642 | pack_threadlist_request (threadlist_packet, | |
1643 | startflag, result_limit, nextthread); | |
1644 | putpkt (threadlist_packet); | |
d01949b6 | 1645 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1646 | |
1647 | *result_count = | |
1648 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1649 | threadlist, done); | |
1650 | ||
1651 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1652 | { | |
1653 | /* FIXME: This is a good reason to drop the packet */ | |
1654 | /* Possably, there is a duplicate response */ | |
1655 | /* Possabilities : | |
1656 | retransmit immediatly - race conditions | |
1657 | retransmit after timeout - yes | |
1658 | exit | |
1659 | wait for packet, then exit | |
1660 | */ | |
1661 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1662 | return 0; /* I choose simply exiting */ | |
1663 | } | |
1664 | if (*result_count <= 0) | |
1665 | { | |
1666 | if (*done != 1) | |
1667 | { | |
1668 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1669 | result = 0; | |
1670 | } | |
1671 | return result; /* break; */ | |
1672 | } | |
1673 | if (*result_count > result_limit) | |
1674 | { | |
1675 | *result_count = 0; | |
1676 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1677 | return 0; | |
1678 | } | |
1679 | return result; | |
1680 | } | |
1681 | ||
1682 | /* This is the interface between remote and threads, remotes upper interface */ | |
1683 | ||
1684 | /* remote_find_new_threads retrieves the thread list and for each | |
1685 | thread in the list, looks up the thread in GDB's internal list, | |
1686 | ading the thread if it does not already exist. This involves | |
1687 | getting partial thread lists from the remote target so, polling the | |
1688 | quit_flag is required. */ | |
1689 | ||
1690 | ||
1691 | /* About this many threadisds fit in a packet. */ | |
1692 | ||
1693 | #define MAXTHREADLISTRESULTS 32 | |
1694 | ||
1695 | static int | |
fba45db2 KB |
1696 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1697 | int looplimit) | |
c906108c SS |
1698 | { |
1699 | int done, i, result_count; | |
1700 | int startflag = 1; | |
1701 | int result = 1; | |
1702 | int loopcount = 0; | |
1703 | static threadref nextthread; | |
1704 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1705 | ||
1706 | done = 0; | |
1707 | while (!done) | |
1708 | { | |
1709 | if (loopcount++ > looplimit) | |
1710 | { | |
1711 | result = 0; | |
1712 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1713 | break; | |
1714 | } | |
1715 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1716 | &done, &result_count, resultthreadlist)) | |
1717 | { | |
1718 | result = 0; | |
1719 | break; | |
1720 | } | |
1721 | /* clear for later iterations */ | |
1722 | startflag = 0; | |
1723 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1724 | if (result_count >= 1) | |
1725 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1726 | i = 0; | |
1727 | while (result_count--) | |
1728 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1729 | break; | |
1730 | } | |
1731 | return result; | |
1732 | } | |
1733 | ||
1734 | static int | |
fba45db2 | 1735 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1736 | { |
39f77062 | 1737 | ptid_t ptid; |
c906108c | 1738 | |
39f77062 KB |
1739 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1740 | ||
1741 | if (!in_thread_list (ptid)) | |
1742 | add_thread (ptid); | |
c906108c SS |
1743 | return 1; /* continue iterator */ |
1744 | } | |
1745 | ||
1746 | #define CRAZY_MAX_THREADS 1000 | |
1747 | ||
39f77062 KB |
1748 | static ptid_t |
1749 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1750 | { |
d01949b6 AC |
1751 | struct remote_state *rs = get_remote_state (); |
1752 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1753 | |
1754 | putpkt ("qC"); | |
d01949b6 | 1755 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1756 | if (buf[0] == 'Q' && buf[1] == 'C') |
39f77062 | 1757 | return pid_to_ptid (strtol (&buf[2], NULL, 16)); |
c906108c SS |
1758 | else |
1759 | return oldpid; | |
1760 | } | |
1761 | ||
9d1f7ab2 MS |
1762 | /* Find new threads for info threads command. |
1763 | * Original version, using John Metzler's thread protocol. | |
1764 | */ | |
cce74817 JM |
1765 | |
1766 | static void | |
fba45db2 | 1767 | remote_find_new_threads (void) |
c906108c | 1768 | { |
c5aa993b JM |
1769 | remote_threadlist_iterator (remote_newthread_step, 0, |
1770 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1771 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1772 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1773 | } |
1774 | ||
9d1f7ab2 MS |
1775 | /* |
1776 | * Find all threads for info threads command. | |
1777 | * Uses new thread protocol contributed by Cisco. | |
1778 | * Falls back and attempts to use the older method (above) | |
1779 | * if the target doesn't respond to the new method. | |
1780 | */ | |
1781 | ||
0f71a2f6 JM |
1782 | static void |
1783 | remote_threads_info (void) | |
1784 | { | |
d01949b6 AC |
1785 | struct remote_state *rs = get_remote_state (); |
1786 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1787 | char *bufp; |
0f71a2f6 JM |
1788 | int tid; |
1789 | ||
1790 | if (remote_desc == 0) /* paranoia */ | |
1791 | error ("Command can only be used when connected to the remote target."); | |
1792 | ||
9d1f7ab2 MS |
1793 | if (use_threadinfo_query) |
1794 | { | |
1795 | putpkt ("qfThreadInfo"); | |
1796 | bufp = buf; | |
d01949b6 | 1797 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1798 | if (bufp[0] != '\0') /* q packet recognized */ |
1799 | { | |
1800 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1801 | { | |
1802 | do | |
1803 | { | |
1804 | tid = strtol (bufp, &bufp, 16); | |
39f77062 KB |
1805 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1806 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1807 | } |
1808 | while (*bufp++ == ','); /* comma-separated list */ | |
1809 | putpkt ("qsThreadInfo"); | |
1810 | bufp = buf; | |
d01949b6 | 1811 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1812 | } |
1813 | return; /* done */ | |
1814 | } | |
1815 | } | |
1816 | ||
1817 | /* Else fall back to old method based on jmetzler protocol. */ | |
1818 | use_threadinfo_query = 0; | |
1819 | remote_find_new_threads (); | |
1820 | return; | |
1821 | } | |
1822 | ||
1823 | /* | |
1824 | * Collect a descriptive string about the given thread. | |
1825 | * The target may say anything it wants to about the thread | |
1826 | * (typically info about its blocked / runnable state, name, etc.). | |
1827 | * This string will appear in the info threads display. | |
1828 | * | |
1829 | * Optional: targets are not required to implement this function. | |
1830 | */ | |
1831 | ||
1832 | static char * | |
1833 | remote_threads_extra_info (struct thread_info *tp) | |
1834 | { | |
d01949b6 | 1835 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1836 | int result; |
1837 | int set; | |
1838 | threadref id; | |
1839 | struct gdb_ext_thread_info threadinfo; | |
1840 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1841 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1842 | int n = 0; /* position in display_buf */ |
1843 | ||
1844 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1845 | internal_error (__FILE__, __LINE__, |
1846 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1847 | |
1848 | if (use_threadextra_query) | |
1849 | { | |
39f77062 | 1850 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1851 | putpkt (bufp); |
d01949b6 | 1852 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1853 | if (bufp[0] != 0) |
1854 | { | |
30559e10 MS |
1855 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1856 | result = hex2bin (bufp, display_buf, n); | |
1857 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1858 | return display_buf; |
1859 | } | |
0f71a2f6 | 1860 | } |
9d1f7ab2 MS |
1861 | |
1862 | /* If the above query fails, fall back to the old method. */ | |
1863 | use_threadextra_query = 0; | |
1864 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1865 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1866 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1867 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1868 | if (threadinfo.active) | |
0f71a2f6 | 1869 | { |
9d1f7ab2 MS |
1870 | if (*threadinfo.shortname) |
1871 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1872 | if (*threadinfo.display) | |
1873 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1874 | if (*threadinfo.more_display) | |
1875 | n += sprintf(&display_buf[n], " Priority: %s", | |
1876 | threadinfo.more_display); | |
1877 | ||
1878 | if (n > 0) | |
c5aa993b | 1879 | { |
9d1f7ab2 MS |
1880 | /* for purely cosmetic reasons, clear up trailing commas */ |
1881 | if (',' == display_buf[n-1]) | |
1882 | display_buf[n-1] = ' '; | |
1883 | return display_buf; | |
c5aa993b | 1884 | } |
0f71a2f6 | 1885 | } |
9d1f7ab2 | 1886 | return NULL; |
0f71a2f6 | 1887 | } |
9d1f7ab2 | 1888 | |
c906108c | 1889 | \f |
c5aa993b | 1890 | |
c906108c SS |
1891 | /* Restart the remote side; this is an extended protocol operation. */ |
1892 | ||
1893 | static void | |
fba45db2 | 1894 | extended_remote_restart (void) |
c906108c | 1895 | { |
d01949b6 AC |
1896 | struct remote_state *rs = get_remote_state (); |
1897 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1898 | |
1899 | /* Send the restart command; for reasons I don't understand the | |
1900 | remote side really expects a number after the "R". */ | |
1901 | buf[0] = 'R'; | |
1902 | sprintf (&buf[1], "%x", 0); | |
1903 | putpkt (buf); | |
1904 | ||
1905 | /* Now query for status so this looks just like we restarted | |
1906 | gdbserver from scratch. */ | |
1907 | putpkt ("?"); | |
d01949b6 | 1908 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1909 | } |
1910 | \f | |
1911 | /* Clean up connection to a remote debugger. */ | |
1912 | ||
1913 | /* ARGSUSED */ | |
1914 | static void | |
fba45db2 | 1915 | remote_close (int quitting) |
c906108c SS |
1916 | { |
1917 | if (remote_desc) | |
2cd58942 | 1918 | serial_close (remote_desc); |
c906108c SS |
1919 | remote_desc = NULL; |
1920 | } | |
1921 | ||
1922 | /* Query the remote side for the text, data and bss offsets. */ | |
1923 | ||
1924 | static void | |
fba45db2 | 1925 | get_offsets (void) |
c906108c | 1926 | { |
d01949b6 AC |
1927 | struct remote_state *rs = get_remote_state (); |
1928 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1929 | char *ptr; |
c906108c SS |
1930 | int lose; |
1931 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1932 | struct section_offsets *offs; | |
1933 | ||
1934 | putpkt ("qOffsets"); | |
1935 | ||
d01949b6 | 1936 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1937 | |
1938 | if (buf[0] == '\000') | |
1939 | return; /* Return silently. Stub doesn't support | |
1940 | this command. */ | |
1941 | if (buf[0] == 'E') | |
1942 | { | |
1943 | warning ("Remote failure reply: %s", buf); | |
1944 | return; | |
1945 | } | |
1946 | ||
1947 | /* Pick up each field in turn. This used to be done with scanf, but | |
1948 | scanf will make trouble if CORE_ADDR size doesn't match | |
1949 | conversion directives correctly. The following code will work | |
1950 | with any size of CORE_ADDR. */ | |
1951 | text_addr = data_addr = bss_addr = 0; | |
1952 | ptr = buf; | |
1953 | lose = 0; | |
1954 | ||
1955 | if (strncmp (ptr, "Text=", 5) == 0) | |
1956 | { | |
1957 | ptr += 5; | |
1958 | /* Don't use strtol, could lose on big values. */ | |
1959 | while (*ptr && *ptr != ';') | |
1960 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1961 | } | |
1962 | else | |
1963 | lose = 1; | |
1964 | ||
1965 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1966 | { | |
1967 | ptr += 6; | |
1968 | while (*ptr && *ptr != ';') | |
1969 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1970 | } | |
1971 | else | |
1972 | lose = 1; | |
1973 | ||
1974 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1975 | { | |
1976 | ptr += 5; | |
1977 | while (*ptr && *ptr != ';') | |
1978 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1979 | } | |
1980 | else | |
1981 | lose = 1; | |
1982 | ||
1983 | if (lose) | |
1984 | error ("Malformed response to offset query, %s", buf); | |
1985 | ||
1986 | if (symfile_objfile == NULL) | |
1987 | return; | |
1988 | ||
a39a16c4 MM |
1989 | offs = ((struct section_offsets *) |
1990 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); | |
1991 | memcpy (offs, symfile_objfile->section_offsets, | |
1992 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); | |
c906108c | 1993 | |
a4c8257b | 1994 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1995 | |
1996 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1997 | because that's what nlmconv does now. The real solution requires changes | |
1998 | to the stub and remote.c that I don't have time to do right now. */ | |
1999 | ||
a4c8257b EZ |
2000 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
2001 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
2002 | |
2003 | objfile_relocate (symfile_objfile, offs); | |
2004 | } | |
2005 | ||
0f71a2f6 JM |
2006 | /* |
2007 | * Cisco version of section offsets: | |
2008 | * | |
2009 | * Instead of having GDB query the target for the section offsets, | |
2010 | * Cisco lets the target volunteer the information! It's also in | |
2011 | * a different format, so here are the functions that will decode | |
2012 | * a section offset packet from a Cisco target. | |
2013 | */ | |
2014 | ||
2015 | /* | |
2016 | * Function: remote_cisco_section_offsets | |
2017 | * | |
2018 | * Returns: zero for success, non-zero for failure | |
2019 | */ | |
2020 | ||
c5aa993b | 2021 | static int |
c2d11a7d JM |
2022 | remote_cisco_section_offsets (bfd_vma text_addr, |
2023 | bfd_vma data_addr, | |
2024 | bfd_vma bss_addr, | |
2025 | bfd_signed_vma *text_offs, | |
2026 | bfd_signed_vma *data_offs, | |
2027 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
2028 | { |
2029 | bfd_vma text_base, data_base, bss_base; | |
2030 | struct minimal_symbol *start; | |
2031 | asection *sect; | |
c5aa993b | 2032 | bfd *abfd; |
0f71a2f6 | 2033 | int len; |
0f71a2f6 JM |
2034 | |
2035 | if (symfile_objfile == NULL) | |
c5aa993b | 2036 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
2037 | |
2038 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
2039 | if (start == NULL) | |
c5aa993b | 2040 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
2041 | |
2042 | data_base = bss_base = 0; | |
2043 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
2044 | ||
2045 | abfd = symfile_objfile->obfd; | |
c5aa993b | 2046 | for (sect = abfd->sections; |
0f71a2f6 JM |
2047 | sect != 0; |
2048 | sect = sect->next) | |
2049 | { | |
ce359b09 | 2050 | const char *p = bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
2051 | len = strlen (p); |
2052 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
2053 | if (data_base == 0 || | |
2054 | data_base > bfd_get_section_vma (abfd, sect)) | |
2055 | data_base = bfd_get_section_vma (abfd, sect); | |
2056 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 2057 | if (bss_base == 0 || |
0f71a2f6 JM |
2058 | bss_base > bfd_get_section_vma (abfd, sect)) |
2059 | bss_base = bfd_get_section_vma (abfd, sect); | |
2060 | } | |
2061 | *text_offs = text_addr - text_base; | |
2062 | *data_offs = data_addr - data_base; | |
c5aa993b | 2063 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
2064 | if (remote_debug) |
2065 | { | |
2066 | char tmp[128]; | |
2067 | ||
2068 | sprintf (tmp, "VMA: text = 0x"); | |
2069 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 2070 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 2071 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 2072 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
2073 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
2074 | fprintf_filtered (gdb_stdlog, tmp); | |
2075 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
2076 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
2077 | paddr_nz (*text_offs), | |
2078 | paddr_nz (*data_offs), | |
2079 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
2080 | } |
2081 | ||
2082 | return 0; | |
2083 | } | |
2084 | ||
2085 | /* | |
2086 | * Function: remote_cisco_objfile_relocate | |
2087 | * | |
2088 | * Relocate the symbol file for a remote target. | |
2089 | */ | |
2090 | ||
96baa820 | 2091 | void |
fba45db2 KB |
2092 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
2093 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
2094 | { |
2095 | struct section_offsets *offs; | |
2096 | ||
c5aa993b | 2097 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2098 | { |
2099 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
2100 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
2101 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 2102 | |
a39a16c4 MM |
2103 | offs = (struct section_offsets *) |
2104 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); | |
2105 | memcpy (offs, symfile_objfile->section_offsets, | |
2106 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); | |
0f71a2f6 | 2107 | |
a4c8257b EZ |
2108 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
2109 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
2110 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
2111 | |
2112 | /* First call the standard objfile_relocate. */ | |
2113 | objfile_relocate (symfile_objfile, offs); | |
2114 | ||
2115 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
2116 | the exec target. These entries will control memory transfers |
2117 | from the exec file. */ | |
0f71a2f6 JM |
2118 | |
2119 | exec_set_section_offsets (text_off, data_off, bss_off); | |
2120 | } | |
2121 | } | |
2122 | ||
c906108c SS |
2123 | /* Stub for catch_errors. */ |
2124 | ||
0f71a2f6 | 2125 | static int |
36918e70 | 2126 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 JM |
2127 | { |
2128 | start_remote (); /* Initialize gdb process mechanisms */ | |
36918e70 AC |
2129 | /* NOTE: Return something >=0. A -ve value is reserved for |
2130 | catch_exceptions. */ | |
0f71a2f6 JM |
2131 | return 1; |
2132 | } | |
2133 | ||
c906108c | 2134 | static int |
36918e70 | 2135 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 2136 | { |
8edbea78 | 2137 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2138 | |
2139 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2140 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2141 | |
2142 | /* Let the stub know that we want it to return the thread. */ | |
2143 | set_thread (-1, 0); | |
2144 | ||
39f77062 | 2145 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2146 | |
2147 | get_offsets (); /* Get text, data & bss offsets */ | |
2148 | ||
2149 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2150 | immediate_quit--; |
c906108c | 2151 | |
36918e70 AC |
2152 | /* NOTE: See comment above in remote_start_remote_dummy(). This |
2153 | function returns something >=0. */ | |
2154 | return remote_start_remote_dummy (uiout, dummy); | |
c906108c SS |
2155 | } |
2156 | ||
2157 | /* Open a connection to a remote debugger. | |
2158 | NAME is the filename used for communication. */ | |
2159 | ||
2160 | static void | |
fba45db2 | 2161 | remote_open (char *name, int from_tty) |
c906108c | 2162 | { |
92d1e331 | 2163 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2164 | } |
2165 | ||
43ff13b4 JM |
2166 | /* Just like remote_open, but with asynchronous support. */ |
2167 | static void | |
fba45db2 | 2168 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2169 | { |
92d1e331 | 2170 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2171 | } |
2172 | ||
c906108c SS |
2173 | /* Open a connection to a remote debugger using the extended |
2174 | remote gdb protocol. NAME is the filename used for communication. */ | |
2175 | ||
2176 | static void | |
fba45db2 | 2177 | extended_remote_open (char *name, int from_tty) |
c906108c | 2178 | { |
92d1e331 DJ |
2179 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2180 | 0 /* async_p */); | |
c906108c SS |
2181 | } |
2182 | ||
43ff13b4 JM |
2183 | /* Just like extended_remote_open, but with asynchronous support. */ |
2184 | static void | |
fba45db2 | 2185 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2186 | { |
92d1e331 DJ |
2187 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2188 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2189 | } |
2190 | ||
c906108c SS |
2191 | /* Generic code for opening a connection to a remote target. */ |
2192 | ||
d471ea57 AC |
2193 | static void |
2194 | init_all_packet_configs (void) | |
2195 | { | |
2196 | int i; | |
44eaed12 C |
2197 | update_packet_config (&remote_protocol_e); |
2198 | update_packet_config (&remote_protocol_E); | |
d471ea57 | 2199 | update_packet_config (&remote_protocol_P); |
dc8acb97 | 2200 | update_packet_config (&remote_protocol_qSymbol); |
d471ea57 AC |
2201 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2202 | update_packet_config (&remote_protocol_Z[i]); | |
2203 | /* Force remote_write_bytes to check whether target supports binary | |
2204 | downloading. */ | |
2205 | update_packet_config (&remote_protocol_binary_download); | |
2206 | } | |
2207 | ||
dc8acb97 MS |
2208 | /* Symbol look-up. */ |
2209 | ||
2210 | static void | |
2211 | remote_check_symbols (struct objfile *objfile) | |
2212 | { | |
d01949b6 | 2213 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2214 | char *msg, *reply, *tmp; |
2215 | struct minimal_symbol *sym; | |
2216 | int end; | |
2217 | ||
2218 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2219 | return; | |
2220 | ||
d01949b6 AC |
2221 | msg = alloca (rs->remote_packet_size); |
2222 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2223 | |
2224 | /* Invite target to request symbol lookups. */ | |
2225 | ||
2226 | putpkt ("qSymbol::"); | |
d01949b6 | 2227 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2228 | packet_ok (reply, &remote_protocol_qSymbol); |
2229 | ||
2230 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2231 | { | |
2232 | tmp = &reply[8]; | |
2233 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2234 | msg[end] = '\0'; | |
2235 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2236 | if (sym == NULL) | |
2237 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2238 | else | |
2239 | sprintf (msg, "qSymbol:%s:%s", | |
2240 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
2241 | &reply[8]); | |
2242 | putpkt (msg); | |
d01949b6 | 2243 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2244 | } |
2245 | } | |
2246 | ||
9db8d71f DJ |
2247 | static struct serial * |
2248 | remote_serial_open (char *name) | |
2249 | { | |
2250 | static int udp_warning = 0; | |
2251 | ||
2252 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2253 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2254 | serial connection is reliable and not the serial connection promising | |
2255 | to be. */ | |
2256 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2257 | { | |
2258 | warning ("The remote protocol may be unreliable over UDP."); | |
2259 | warning ("Some events may be lost, rendering further debugging " | |
2260 | "impossible."); | |
2261 | udp_warning = 1; | |
2262 | } | |
2263 | ||
2264 | return serial_open (name); | |
2265 | } | |
2266 | ||
c906108c | 2267 | static void |
fba45db2 | 2268 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2269 | int extended_p, int async_p) |
c906108c | 2270 | { |
36918e70 | 2271 | int ex; |
d01949b6 | 2272 | struct remote_state *rs = get_remote_state (); |
c906108c | 2273 | if (name == 0) |
22e04375 AC |
2274 | error ("To open a remote debug connection, you need to specify what\n" |
2275 | "serial device is attached to the remote system\n" | |
2276 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2277 | |
6426a772 | 2278 | /* See FIXME above */ |
92d1e331 DJ |
2279 | if (!async_p) |
2280 | wait_forever_enabled_p = 1; | |
6426a772 | 2281 | |
c906108c SS |
2282 | target_preopen (from_tty); |
2283 | ||
2284 | unpush_target (target); | |
2285 | ||
9db8d71f | 2286 | remote_desc = remote_serial_open (name); |
c906108c SS |
2287 | if (!remote_desc) |
2288 | perror_with_name (name); | |
2289 | ||
2290 | if (baud_rate != -1) | |
2291 | { | |
2cd58942 | 2292 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2293 | { |
2cd58942 | 2294 | serial_close (remote_desc); |
c906108c SS |
2295 | perror_with_name (name); |
2296 | } | |
2297 | } | |
2298 | ||
2cd58942 | 2299 | serial_raw (remote_desc); |
c906108c SS |
2300 | |
2301 | /* If there is something sitting in the buffer we might take it as a | |
2302 | response to a command, which would be bad. */ | |
2cd58942 | 2303 | serial_flush_input (remote_desc); |
c906108c SS |
2304 | |
2305 | if (from_tty) | |
2306 | { | |
2307 | puts_filtered ("Remote debugging using "); | |
2308 | puts_filtered (name); | |
2309 | puts_filtered ("\n"); | |
2310 | } | |
c5aa993b | 2311 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2312 | |
d471ea57 | 2313 | init_all_packet_configs (); |
96baa820 | 2314 | |
c5aa993b | 2315 | general_thread = -2; |
cce74817 | 2316 | continue_thread = -2; |
c906108c | 2317 | |
9d1f7ab2 MS |
2318 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2319 | use_threadinfo_query = 1; | |
2320 | use_threadextra_query = 1; | |
2321 | ||
c906108c SS |
2322 | /* Without this, some commands which require an active target (such |
2323 | as kill) won't work. This variable serves (at least) double duty | |
2324 | as both the pid of the target process (if it has such), and as a | |
2325 | flag indicating that a target is active. These functions should | |
2326 | be split out into seperate variables, especially since GDB will | |
2327 | someday have a notion of debugging several processes. */ | |
2328 | ||
39f77062 | 2329 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2330 | |
2331 | if (async_p) | |
2332 | { | |
2333 | /* With this target we start out by owning the terminal. */ | |
2334 | remote_async_terminal_ours_p = 1; | |
2335 | ||
2336 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2337 | assumed that the target is already ready and able to respond to | |
2338 | requests. Unfortunately remote_start_remote() eventually calls | |
2339 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2340 | around this. Eventually a mechanism that allows | |
2341 | wait_for_inferior() to expect/get timeouts will be | |
2342 | implemented. */ | |
2343 | wait_forever_enabled_p = 0; | |
2344 | } | |
2345 | ||
f78f6cf1 MS |
2346 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2347 | /* First delete any symbols previously loaded from shared libraries. */ | |
2348 | no_shared_libraries (NULL, 0); | |
2349 | #endif | |
2350 | ||
36918e70 | 2351 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2352 | target (we'd otherwise be in an inconsistent state) and then |
2353 | propogate the error on up the exception chain. This ensures that | |
2354 | the caller doesn't stumble along blindly assuming that the | |
2355 | function succeeded. The CLI doesn't have this problem but other | |
2356 | UI's, such as MI do. | |
36918e70 AC |
2357 | |
2358 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2359 | this function should return an error indication letting the | |
2360 | caller restore the previous state. Unfortunatly the command | |
2361 | ``target remote'' is directly wired to this function making that | |
2362 | impossible. On a positive note, the CLI side of this problem has | |
2363 | been fixed - the function set_cmd_context() makes it possible for | |
2364 | all the ``target ....'' commands to share a common callback | |
2365 | function. See cli-dump.c. */ | |
2366 | ex = catch_exceptions (uiout, | |
2367 | remote_start_remote, NULL, | |
2368 | "Couldn't establish connection to remote" | |
2369 | " target\n", | |
2370 | RETURN_MASK_ALL); | |
2371 | if (ex < 0) | |
c906108c SS |
2372 | { |
2373 | pop_target (); | |
92d1e331 DJ |
2374 | if (async_p) |
2375 | wait_forever_enabled_p = 1; | |
165b8e33 | 2376 | throw_exception (ex); |
c906108c SS |
2377 | } |
2378 | ||
92d1e331 DJ |
2379 | if (async_p) |
2380 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2381 | |
2382 | if (extended_p) | |
43ff13b4 | 2383 | { |
6240bebf | 2384 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2385 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2386 | putpkt ("!"); |
d01949b6 | 2387 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2388 | } |
f78f6cf1 | 2389 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2390 | /* FIXME: need a master target_open vector from which all |
2391 | remote_opens can be called, so that stuff like this can | |
2392 | go there. Failing that, the following code must be copied | |
2393 | to the open function for any remote target that wants to | |
2394 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2395 | |
2396 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2397 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2398 | { |
2399 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2400 | remote_check_symbols (symfile_objfile); | |
2401 | } | |
6240bebf | 2402 | #endif |
43ff13b4 JM |
2403 | } |
2404 | ||
c906108c SS |
2405 | /* This takes a program previously attached to and detaches it. After |
2406 | this is done, GDB can be used to debug some other program. We | |
2407 | better not have left any breakpoints in the target program or it'll | |
2408 | die when it hits one. */ | |
2409 | ||
2410 | static void | |
fba45db2 | 2411 | remote_detach (char *args, int from_tty) |
c906108c | 2412 | { |
d01949b6 AC |
2413 | struct remote_state *rs = get_remote_state (); |
2414 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2415 | |
2416 | if (args) | |
2417 | error ("Argument given to \"detach\" when remotely debugging."); | |
2418 | ||
2419 | /* Tell the remote target to detach. */ | |
2420 | strcpy (buf, "D"); | |
d01949b6 | 2421 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2422 | |
6ad8ae5c DJ |
2423 | /* Unregister the file descriptor from the event loop. */ |
2424 | if (target_is_async_p ()) | |
2425 | serial_async (remote_desc, NULL, 0); | |
2426 | ||
cca728d0 | 2427 | target_mourn_inferior (); |
c906108c SS |
2428 | if (from_tty) |
2429 | puts_filtered ("Ending remote debugging.\n"); | |
2430 | } | |
2431 | ||
6ad8ae5c DJ |
2432 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2433 | ||
43ff13b4 | 2434 | static void |
6ad8ae5c | 2435 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2436 | { |
d01949b6 AC |
2437 | struct remote_state *rs = get_remote_state (); |
2438 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2439 | |
2440 | if (args) | |
2441 | error ("Argument given to \"detach\" when remotely debugging."); | |
2442 | ||
43ff13b4 | 2443 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2444 | if (target_is_async_p ()) |
2cd58942 | 2445 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2446 | |
cca728d0 | 2447 | target_mourn_inferior (); |
43ff13b4 JM |
2448 | if (from_tty) |
2449 | puts_filtered ("Ending remote debugging.\n"); | |
2450 | } | |
2451 | ||
c906108c SS |
2452 | /* Convert hex digit A to a number. */ |
2453 | ||
30559e10 | 2454 | static int |
fba45db2 | 2455 | fromhex (int a) |
c906108c SS |
2456 | { |
2457 | if (a >= '0' && a <= '9') | |
2458 | return a - '0'; | |
2459 | else if (a >= 'a' && a <= 'f') | |
2460 | return a - 'a' + 10; | |
2461 | else if (a >= 'A' && a <= 'F') | |
2462 | return a - 'A' + 10; | |
c5aa993b | 2463 | else |
c906108c SS |
2464 | error ("Reply contains invalid hex digit %d", a); |
2465 | } | |
2466 | ||
30559e10 MS |
2467 | static int |
2468 | hex2bin (const char *hex, char *bin, int count) | |
2469 | { | |
2470 | int i; | |
2471 | ||
30559e10 MS |
2472 | for (i = 0; i < count; i++) |
2473 | { | |
2474 | if (hex[0] == 0 || hex[1] == 0) | |
2475 | { | |
2476 | /* Hex string is short, or of uneven length. | |
2477 | Return the count that has been converted so far. */ | |
2478 | return i; | |
2479 | } | |
2480 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2481 | hex += 2; | |
2482 | } | |
2483 | return i; | |
2484 | } | |
2485 | ||
c906108c SS |
2486 | /* Convert number NIB to a hex digit. */ |
2487 | ||
2488 | static int | |
fba45db2 | 2489 | tohex (int nib) |
c906108c SS |
2490 | { |
2491 | if (nib < 10) | |
c5aa993b | 2492 | return '0' + nib; |
c906108c | 2493 | else |
c5aa993b | 2494 | return 'a' + nib - 10; |
c906108c | 2495 | } |
30559e10 MS |
2496 | |
2497 | static int | |
234fa6d1 | 2498 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2499 | { |
2500 | int i; | |
2501 | /* May use a length, or a nul-terminated string as input. */ | |
2502 | if (count == 0) | |
2503 | count = strlen (bin); | |
2504 | ||
2505 | for (i = 0; i < count; i++) | |
2506 | { | |
2507 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2508 | *hex++ = tohex (*bin++ & 0xf); | |
2509 | } | |
2510 | *hex = 0; | |
2511 | return i; | |
2512 | } | |
c906108c SS |
2513 | \f |
2514 | /* Tell the remote machine to resume. */ | |
2515 | ||
2516 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2517 | ||
2518 | static int last_sent_step; | |
2519 | ||
2520 | static void | |
39f77062 | 2521 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
c906108c | 2522 | { |
d01949b6 AC |
2523 | struct remote_state *rs = get_remote_state (); |
2524 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2525 | int pid = PIDGET (ptid); |
44eaed12 | 2526 | char *p; |
c906108c SS |
2527 | |
2528 | if (pid == -1) | |
2529 | set_thread (0, 0); /* run any thread */ | |
2530 | else | |
2531 | set_thread (pid, 0); /* run this thread */ | |
2532 | ||
c906108c SS |
2533 | last_sent_signal = siggnal; |
2534 | last_sent_step = step; | |
2535 | ||
2536 | /* A hook for when we need to do something at the last moment before | |
2537 | resumption. */ | |
2538 | if (target_resume_hook) | |
2539 | (*target_resume_hook) (); | |
2540 | ||
44eaed12 C |
2541 | |
2542 | /* The s/S/c/C packets do not return status. So if the target does | |
2543 | not support the S or C packets, the debug agent returns an empty | |
2544 | string which is detected in remote_wait(). This protocol defect | |
2545 | is fixed in the e/E packets. */ | |
2546 | ||
2547 | if (step && step_range_end) | |
2548 | { | |
2549 | /* If the target does not support the 'E' packet, we try the 'S' | |
2550 | packet. Ideally we would fall back to the 'e' packet if that | |
2551 | too is not supported. But that would require another copy of | |
2552 | the code to issue the 'e' packet (and fall back to 's' if not | |
2553 | supported) in remote_wait(). */ | |
2554 | ||
2555 | if (siggnal != TARGET_SIGNAL_0) | |
2556 | { | |
2557 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2558 | { | |
2559 | p = buf; | |
2560 | *p++ = 'E'; | |
2561 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2562 | *p++ = tohex (((int) siggnal) & 0xf); | |
2563 | *p++ = ','; | |
2564 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2565 | *p++ = ','; | |
2566 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2567 | *p++ = 0; | |
2568 | ||
2569 | putpkt (buf); | |
d01949b6 | 2570 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2571 | |
234fa6d1 | 2572 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2573 | return; |
2574 | } | |
2575 | } | |
2576 | else | |
2577 | { | |
2578 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2579 | { | |
2580 | p = buf; | |
2581 | *p++ = 'e'; | |
2582 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2583 | *p++ = ','; | |
2584 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2585 | *p++ = 0; | |
2586 | ||
2587 | putpkt (buf); | |
d01949b6 | 2588 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2589 | |
234fa6d1 | 2590 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2591 | return; |
2592 | } | |
2593 | } | |
2594 | } | |
2595 | ||
c906108c SS |
2596 | if (siggnal != TARGET_SIGNAL_0) |
2597 | { | |
2598 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2599 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
44eaed12 | 2600 | buf[2] = tohex (((int) siggnal) & 0xf); |
c906108c SS |
2601 | buf[3] = '\0'; |
2602 | } | |
2603 | else | |
c5aa993b | 2604 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2605 | |
2606 | putpkt (buf); | |
2607 | } | |
43ff13b4 JM |
2608 | |
2609 | /* Same as remote_resume, but with async support. */ | |
2610 | static void | |
39f77062 | 2611 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2612 | { |
d01949b6 AC |
2613 | struct remote_state *rs = get_remote_state (); |
2614 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2615 | int pid = PIDGET (ptid); |
44eaed12 | 2616 | char *p; |
43ff13b4 JM |
2617 | |
2618 | if (pid == -1) | |
2619 | set_thread (0, 0); /* run any thread */ | |
2620 | else | |
2621 | set_thread (pid, 0); /* run this thread */ | |
2622 | ||
43ff13b4 JM |
2623 | last_sent_signal = siggnal; |
2624 | last_sent_step = step; | |
2625 | ||
2626 | /* A hook for when we need to do something at the last moment before | |
2627 | resumption. */ | |
2628 | if (target_resume_hook) | |
2629 | (*target_resume_hook) (); | |
2630 | ||
44eaed12 C |
2631 | /* The s/S/c/C packets do not return status. So if the target does |
2632 | not support the S or C packets, the debug agent returns an empty | |
2633 | string which is detected in remote_wait(). This protocol defect | |
2634 | is fixed in the e/E packets. */ | |
2635 | ||
2636 | if (step && step_range_end) | |
2637 | { | |
2638 | /* If the target does not support the 'E' packet, we try the 'S' | |
2639 | packet. Ideally we would fall back to the 'e' packet if that | |
2640 | too is not supported. But that would require another copy of | |
2641 | the code to issue the 'e' packet (and fall back to 's' if not | |
2642 | supported) in remote_wait(). */ | |
2643 | ||
2644 | if (siggnal != TARGET_SIGNAL_0) | |
2645 | { | |
2646 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2647 | { | |
2648 | p = buf; | |
2649 | *p++ = 'E'; | |
2650 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2651 | *p++ = tohex (((int) siggnal) & 0xf); | |
2652 | *p++ = ','; | |
2653 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2654 | *p++ = ','; | |
2655 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2656 | *p++ = 0; | |
2657 | ||
2658 | putpkt (buf); | |
d01949b6 | 2659 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2660 | |
234fa6d1 | 2661 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2662 | goto register_event_loop; |
2663 | } | |
2664 | } | |
2665 | else | |
2666 | { | |
2667 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2668 | { | |
2669 | p = buf; | |
2670 | *p++ = 'e'; | |
2671 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2672 | *p++ = ','; | |
2673 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2674 | *p++ = 0; | |
2675 | ||
2676 | putpkt (buf); | |
d01949b6 | 2677 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2678 | |
234fa6d1 | 2679 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2680 | goto register_event_loop; |
2681 | } | |
2682 | } | |
2683 | } | |
2684 | ||
43ff13b4 JM |
2685 | if (siggnal != TARGET_SIGNAL_0) |
2686 | { | |
2687 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2688 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2689 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2690 | buf[3] = '\0'; |
2691 | } | |
2692 | else | |
c5aa993b | 2693 | strcpy (buf, step ? "s" : "c"); |
44eaed12 C |
2694 | |
2695 | putpkt (buf); | |
43ff13b4 | 2696 | |
44eaed12 | 2697 | register_event_loop: |
2acceee2 JM |
2698 | /* We are about to start executing the inferior, let's register it |
2699 | with the event loop. NOTE: this is the one place where all the | |
2700 | execution commands end up. We could alternatively do this in each | |
2701 | of the execution commands in infcmd.c.*/ | |
2702 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2703 | into infcmd.c in order to allow inferior function calls to work | |
2704 | NOT asynchronously. */ | |
ed9a39eb | 2705 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2706 | target_async (inferior_event_handler, 0); |
2707 | /* Tell the world that the target is now executing. */ | |
2708 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2709 | this? Instead, should the client of target just assume (for | |
2710 | async targets) that the target is going to start executing? Is | |
2711 | this information already found in the continuation block? */ | |
ed9a39eb | 2712 | if (target_is_async_p ()) |
2acceee2 | 2713 | target_executing = 1; |
43ff13b4 | 2714 | } |
c906108c | 2715 | \f |
43ff13b4 JM |
2716 | |
2717 | /* Set up the signal handler for SIGINT, while the target is | |
2718 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2719 | static void | |
fba45db2 | 2720 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2721 | { |
c5aa993b | 2722 | sigint_remote_token = |
43ff13b4 JM |
2723 | create_async_signal_handler (async_remote_interrupt, NULL); |
2724 | signal (SIGINT, handle_remote_sigint); | |
2725 | } | |
2726 | ||
2727 | /* Signal handler for SIGINT, while the target is executing. */ | |
2728 | static void | |
fba45db2 | 2729 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2730 | { |
2731 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2732 | sigint_remote_twice_token = |
43ff13b4 JM |
2733 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2734 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2735 | } | |
2736 | ||
2737 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2738 | sent once. It will take effect the second time that the user sends | |
2739 | a ^C. */ | |
2740 | static void | |
fba45db2 | 2741 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2742 | { |
2743 | signal (sig, handle_sigint); | |
c5aa993b | 2744 | sigint_remote_twice_token = |
2df3850c | 2745 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2746 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2747 | } | |
2748 | ||
6426a772 | 2749 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2750 | to a ^C. */ |
c5aa993b | 2751 | static void |
fba45db2 | 2752 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2753 | { |
2754 | if (remote_debug) | |
2755 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2756 | ||
2757 | target_stop (); | |
2758 | } | |
2759 | ||
2760 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2761 | up on the target alltogether. */ | |
2df3850c | 2762 | void |
fba45db2 | 2763 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2764 | { |
2df3850c JM |
2765 | if (remote_debug) |
2766 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2767 | /* Do something only if the target was not killed by the previous |
2768 | cntl-C. */ | |
2769 | if (target_executing) | |
2770 | { | |
2771 | interrupt_query (); | |
2772 | signal (SIGINT, handle_remote_sigint); | |
2773 | } | |
43ff13b4 JM |
2774 | } |
2775 | ||
2776 | /* Reinstall the usual SIGINT handlers, after the target has | |
2777 | stopped. */ | |
6426a772 JM |
2778 | static void |
2779 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2780 | { |
2781 | signal (SIGINT, handle_sigint); | |
2782 | if (sigint_remote_twice_token) | |
c2c6d25f | 2783 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2784 | if (sigint_remote_token) |
c2c6d25f | 2785 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2786 | } |
2787 | ||
c906108c SS |
2788 | /* Send ^C to target to halt it. Target will respond, and send us a |
2789 | packet. */ | |
507f3c78 | 2790 | static void (*ofunc) (int); |
c906108c | 2791 | |
7a292a7a SS |
2792 | /* The command line interface's stop routine. This function is installed |
2793 | as a signal handler for SIGINT. The first time a user requests a | |
2794 | stop, we call remote_stop to send a break or ^C. If there is no | |
2795 | response from the target (it didn't stop when the user requested it), | |
2796 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2797 | static void |
fba45db2 | 2798 | remote_interrupt (int signo) |
c906108c | 2799 | { |
7a292a7a SS |
2800 | /* If this doesn't work, try more severe steps. */ |
2801 | signal (signo, remote_interrupt_twice); | |
2802 | ||
2803 | if (remote_debug) | |
0f71a2f6 | 2804 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2805 | |
2806 | target_stop (); | |
2807 | } | |
2808 | ||
2809 | /* The user typed ^C twice. */ | |
2810 | ||
2811 | static void | |
fba45db2 | 2812 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2813 | { |
2814 | signal (signo, ofunc); | |
2815 | interrupt_query (); | |
c906108c SS |
2816 | signal (signo, remote_interrupt); |
2817 | } | |
7a292a7a SS |
2818 | |
2819 | /* This is the generic stop called via the target vector. When a target | |
2820 | interrupt is requested, either by the command line or the GUI, we | |
2821 | will eventually end up here. */ | |
c906108c | 2822 | static void |
fba45db2 | 2823 | remote_stop (void) |
c906108c | 2824 | { |
7a292a7a SS |
2825 | /* Send a break or a ^C, depending on user preference. */ |
2826 | if (remote_debug) | |
0f71a2f6 | 2827 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2828 | |
7a292a7a | 2829 | if (remote_break) |
2cd58942 | 2830 | serial_send_break (remote_desc); |
c906108c | 2831 | else |
2cd58942 | 2832 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2833 | } |
2834 | ||
2835 | /* Ask the user what to do when an interrupt is received. */ | |
2836 | ||
2837 | static void | |
fba45db2 | 2838 | interrupt_query (void) |
c906108c SS |
2839 | { |
2840 | target_terminal_ours (); | |
2841 | ||
2842 | if (query ("Interrupted while waiting for the program.\n\ | |
2843 | Give up (and stop debugging it)? ")) | |
2844 | { | |
2845 | target_mourn_inferior (); | |
b5a2688f | 2846 | throw_exception (RETURN_QUIT); |
c906108c SS |
2847 | } |
2848 | ||
2849 | target_terminal_inferior (); | |
2850 | } | |
2851 | ||
6426a772 JM |
2852 | /* Enable/disable target terminal ownership. Most targets can use |
2853 | terminal groups to control terminal ownership. Remote targets are | |
2854 | different in that explicit transfer of ownership to/from GDB/target | |
2855 | is required. */ | |
2856 | ||
2857 | static void | |
2858 | remote_async_terminal_inferior (void) | |
2859 | { | |
2860 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2861 | sync_execution here. This function should only be called when | |
2862 | GDB is resuming the inferior in the forground. A background | |
2863 | resume (``run&'') should leave GDB in control of the terminal and | |
2864 | consequently should not call this code. */ | |
2865 | if (!sync_execution) | |
2866 | return; | |
2867 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2868 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2869 | to an asynchronous target with a synchronous command calls this | |
2870 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2871 | stops trying to transfer the terminal to the target when it | |
2872 | shouldn't this guard can go away. */ | |
2873 | if (!remote_async_terminal_ours_p) | |
2874 | return; | |
2875 | delete_file_handler (input_fd); | |
2876 | remote_async_terminal_ours_p = 0; | |
2877 | initialize_sigint_signal_handler (); | |
2878 | /* NOTE: At this point we could also register our selves as the | |
2879 | recipient of all input. Any characters typed could then be | |
2880 | passed on down to the target. */ | |
2881 | } | |
2882 | ||
2883 | static void | |
2884 | remote_async_terminal_ours (void) | |
2885 | { | |
2886 | /* See FIXME in remote_async_terminal_inferior. */ | |
2887 | if (!sync_execution) | |
2888 | return; | |
2889 | /* See FIXME in remote_async_terminal_inferior. */ | |
2890 | if (remote_async_terminal_ours_p) | |
2891 | return; | |
2892 | cleanup_sigint_signal_handler (NULL); | |
2893 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2894 | remote_async_terminal_ours_p = 1; | |
2895 | } | |
2896 | ||
c906108c SS |
2897 | /* If nonzero, ignore the next kill. */ |
2898 | ||
2899 | int kill_kludge; | |
2900 | ||
2901 | void | |
917317f4 | 2902 | remote_console_output (char *msg) |
c906108c SS |
2903 | { |
2904 | char *p; | |
2905 | ||
c5aa993b | 2906 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2907 | { |
2908 | char tb[2]; | |
2909 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2910 | tb[0] = c; | |
2911 | tb[1] = 0; | |
43ff13b4 | 2912 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2913 | } |
917317f4 | 2914 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2915 | } |
2916 | ||
0f71a2f6 JM |
2917 | /* Wait until the remote machine stops, then return, |
2918 | storing status in STATUS just as `wait' would. | |
2919 | Returns "pid", which in the case of a multi-threaded | |
2920 | remote OS, is the thread-id. */ | |
c906108c | 2921 | |
39f77062 KB |
2922 | static ptid_t |
2923 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2924 | { |
d01949b6 AC |
2925 | struct remote_state *rs = get_remote_state (); |
2926 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2927 | ULONGEST thread_num = -1; |
3c3bea1c | 2928 | ULONGEST addr; |
c906108c SS |
2929 | |
2930 | status->kind = TARGET_WAITKIND_EXITED; | |
2931 | status->value.integer = 0; | |
2932 | ||
2933 | while (1) | |
2934 | { | |
2935 | unsigned char *p; | |
2936 | ||
c906108c | 2937 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2938 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2939 | signal (SIGINT, ofunc); |
2940 | ||
2941 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2942 | collection of trace data) every time the target stops. */ |
c906108c SS |
2943 | if (target_wait_loop_hook) |
2944 | (*target_wait_loop_hook) (); | |
2945 | ||
3c3bea1c GS |
2946 | remote_stopped_by_watchpoint_p = 0; |
2947 | ||
c906108c SS |
2948 | switch (buf[0]) |
2949 | { | |
2950 | case 'E': /* Error of some sort */ | |
2951 | warning ("Remote failure reply: %s", buf); | |
2952 | continue; | |
449092f6 CV |
2953 | case 'F': /* File-I/O request */ |
2954 | remote_fileio_request (buf); | |
2955 | continue; | |
c906108c SS |
2956 | case 'T': /* Status with PC, SP, FP, ... */ |
2957 | { | |
2958 | int i; | |
d9d9c31f | 2959 | char regs[MAX_REGISTER_SIZE]; |
c906108c SS |
2960 | |
2961 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2962 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2963 | ss = signal number |
2964 | n... = register number | |
2965 | r... = register contents | |
2966 | */ | |
c906108c SS |
2967 | p = &buf[3]; /* after Txx */ |
2968 | ||
2969 | while (*p) | |
2970 | { | |
2971 | unsigned char *p1; | |
2972 | char *p_temp; | |
97345198 | 2973 | int fieldsize; |
3c3bea1c GS |
2974 | LONGEST pnum = 0; |
2975 | ||
2976 | /* If the packet contains a register number save it in pnum | |
2977 | and set p1 to point to the character following it. | |
2978 | Otherwise p1 points to p. */ | |
c906108c | 2979 | |
3c3bea1c GS |
2980 | /* If this packet is an awatch packet, don't parse the 'a' |
2981 | as a register number. */ | |
2982 | ||
2983 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2984 | { | |
2985 | /* Read the ``P'' register number. */ | |
2986 | pnum = strtol (p, &p_temp, 16); | |
2987 | p1 = (unsigned char *) p_temp; | |
2988 | } | |
2989 | else | |
2990 | p1 = p; | |
c906108c | 2991 | |
c5aa993b | 2992 | if (p1 == p) /* No register number present here */ |
c906108c | 2993 | { |
3c3bea1c | 2994 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c SS |
2995 | if (p1 == NULL) |
2996 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2997 | Packet: '%s'\n", | |
2998 | p, buf); | |
3c3bea1c | 2999 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3000 | { |
3001 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3002 | record_currthread (thread_num); | |
3003 | p = (unsigned char *) p_temp; | |
3004 | } | |
3c3bea1c GS |
3005 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3006 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3007 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3008 | { | |
3009 | remote_stopped_by_watchpoint_p = 1; | |
3010 | p = unpack_varlen_hex (++p1, &addr); | |
3011 | remote_watch_data_address = (CORE_ADDR)addr; | |
3012 | } | |
3013 | else | |
3014 | { | |
3015 | /* Silently skip unknown optional info. */ | |
3016 | p_temp = strchr (p1 + 1, ';'); | |
3017 | if (p_temp) | |
3018 | p = (unsigned char *) p_temp; | |
3019 | } | |
c906108c SS |
3020 | } |
3021 | else | |
3022 | { | |
ad10f812 | 3023 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
3024 | p = p1; |
3025 | ||
3026 | if (*p++ != ':') | |
3027 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3028 | Packet: '%s'\n", | |
3029 | p, buf); | |
3030 | ||
ad10f812 AC |
3031 | if (reg == NULL) |
3032 | warning ("Remote sent bad register number %s: %s\n\ | |
c906108c | 3033 | Packet: '%s'\n", |
ad10f812 | 3034 | phex_nz (pnum, 0), p, buf); |
c906108c | 3035 | |
ad10f812 | 3036 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum)); |
97345198 | 3037 | p += 2 * fieldsize; |
ad10f812 | 3038 | if (fieldsize < REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3039 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3040 | supply_register (reg->regnum, regs); |
c906108c SS |
3041 | } |
3042 | ||
3043 | if (*p++ != ';') | |
3044 | { | |
3045 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3046 | warning (" here: %s", p); |
c906108c SS |
3047 | } |
3048 | } | |
3049 | } | |
3050 | /* fall through */ | |
3051 | case 'S': /* Old style status, just signal only */ | |
3052 | status->kind = TARGET_WAITKIND_STOPPED; | |
3053 | status->value.sig = (enum target_signal) | |
3054 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3055 | ||
0f71a2f6 JM |
3056 | if (buf[3] == 'p') |
3057 | { | |
3058 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3059 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3060 | |
3061 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3062 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3063 | value_from_string ("PDEBUG-")); |
3064 | cisco_kernel_mode = 0; | |
3065 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3066 | record_currthread (thread_num); | |
3067 | } | |
3068 | else if (buf[3] == 'k') | |
3069 | { | |
3070 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3071 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3072 | |
3073 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3074 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3075 | value_from_string ("KDEBUG-")); |
3076 | cisco_kernel_mode = 1; | |
3077 | } | |
c906108c | 3078 | goto got_status; |
0f71a2f6 JM |
3079 | case 'N': /* Cisco special: status and offsets */ |
3080 | { | |
3081 | bfd_vma text_addr, data_addr, bss_addr; | |
3082 | bfd_signed_vma text_off, data_off, bss_off; | |
3083 | unsigned char *p1; | |
3084 | ||
3085 | status->kind = TARGET_WAITKIND_STOPPED; | |
3086 | status->value.sig = (enum target_signal) | |
3087 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3088 | ||
c5aa993b | 3089 | if (symfile_objfile == NULL) |
0f71a2f6 | 3090 | { |
d4f3574e | 3091 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
3092 | Packet Dropped"); |
3093 | goto got_status; | |
3094 | } | |
3095 | ||
3096 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3097 | * where AA is the signal number, TT is the new text | |
3098 | * address, DD * is the new data address, and BB is the | |
3099 | * new bss address. */ | |
3100 | ||
3101 | p = &buf[3]; | |
3102 | text_addr = strtoul (p, (char **) &p1, 16); | |
3103 | if (p1 == p || *p1 != ';') | |
3104 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3105 | p = p1 + 1; | |
3106 | data_addr = strtoul (p, (char **) &p1, 16); | |
3107 | if (p1 == p || *p1 != ';') | |
3108 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3109 | p = p1 + 1; | |
3110 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3111 | if (p1 == p) |
0f71a2f6 JM |
3112 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3113 | ||
3114 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3115 | &text_off, &data_off, &bss_off) | |
3116 | == 0) | |
c5aa993b | 3117 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
3118 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3119 | ||
3120 | goto got_status; | |
3121 | } | |
c906108c SS |
3122 | case 'W': /* Target exited */ |
3123 | { | |
3124 | /* The remote process exited. */ | |
3125 | status->kind = TARGET_WAITKIND_EXITED; | |
3126 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3127 | goto got_status; | |
3128 | } | |
3129 | case 'X': | |
3130 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3131 | status->value.sig = (enum target_signal) | |
3132 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3133 | kill_kludge = 1; | |
3134 | ||
3135 | goto got_status; | |
3136 | case 'O': /* Console output */ | |
3137 | remote_console_output (buf + 1); | |
3138 | continue; | |
3139 | case '\0': | |
3140 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3141 | { | |
3142 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3143 | the remote system doesn't support it. */ |
c906108c SS |
3144 | target_terminal_ours_for_output (); |
3145 | printf_filtered | |
3146 | ("Can't send signals to this remote system. %s not sent.\n", | |
3147 | target_signal_to_name (last_sent_signal)); | |
3148 | last_sent_signal = TARGET_SIGNAL_0; | |
3149 | target_terminal_inferior (); | |
3150 | ||
3151 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3152 | putpkt ((char *) buf); | |
3153 | continue; | |
3154 | } | |
3155 | /* else fallthrough */ | |
3156 | default: | |
3157 | warning ("Invalid remote reply: %s", buf); | |
3158 | continue; | |
3159 | } | |
3160 | } | |
c5aa993b | 3161 | got_status: |
c906108c SS |
3162 | if (thread_num != -1) |
3163 | { | |
39f77062 | 3164 | return pid_to_ptid (thread_num); |
c906108c | 3165 | } |
39f77062 | 3166 | return inferior_ptid; |
c906108c SS |
3167 | } |
3168 | ||
43ff13b4 | 3169 | /* Async version of remote_wait. */ |
39f77062 KB |
3170 | static ptid_t |
3171 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3172 | { |
d01949b6 AC |
3173 | struct remote_state *rs = get_remote_state (); |
3174 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 3175 | ULONGEST thread_num = -1; |
3c3bea1c | 3176 | ULONGEST addr; |
43ff13b4 JM |
3177 | |
3178 | status->kind = TARGET_WAITKIND_EXITED; | |
3179 | status->value.integer = 0; | |
3180 | ||
3c3bea1c GS |
3181 | remote_stopped_by_watchpoint_p = 0; |
3182 | ||
43ff13b4 JM |
3183 | while (1) |
3184 | { | |
3185 | unsigned char *p; | |
c5aa993b | 3186 | |
ed9a39eb | 3187 | if (!target_is_async_p ()) |
43ff13b4 | 3188 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3189 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3190 | _never_ wait for ever -> test on target_is_async_p(). | |
3191 | However, before we do that we need to ensure that the caller | |
3192 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 3193 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3194 | if (!target_is_async_p ()) |
43ff13b4 JM |
3195 | signal (SIGINT, ofunc); |
3196 | ||
3197 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3198 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
3199 | if (target_wait_loop_hook) |
3200 | (*target_wait_loop_hook) (); | |
3201 | ||
3202 | switch (buf[0]) | |
3203 | { | |
3204 | case 'E': /* Error of some sort */ | |
3205 | warning ("Remote failure reply: %s", buf); | |
3206 | continue; | |
449092f6 CV |
3207 | case 'F': /* File-I/O request */ |
3208 | remote_fileio_request (buf); | |
3209 | continue; | |
43ff13b4 JM |
3210 | case 'T': /* Status with PC, SP, FP, ... */ |
3211 | { | |
3212 | int i; | |
d9d9c31f | 3213 | char regs[MAX_REGISTER_SIZE]; |
43ff13b4 JM |
3214 | |
3215 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3216 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3217 | ss = signal number |
3218 | n... = register number | |
3219 | r... = register contents | |
3220 | */ | |
43ff13b4 JM |
3221 | p = &buf[3]; /* after Txx */ |
3222 | ||
3223 | while (*p) | |
3224 | { | |
3225 | unsigned char *p1; | |
3226 | char *p_temp; | |
6c3f2dbf | 3227 | int fieldsize; |
3c3bea1c | 3228 | long pnum = 0; |
43ff13b4 | 3229 | |
3c3bea1c GS |
3230 | /* If the packet contains a register number, save it in pnum |
3231 | and set p1 to point to the character following it. | |
3232 | Otherwise p1 points to p. */ | |
3233 | ||
3234 | /* If this packet is an awatch packet, don't parse the 'a' | |
3235 | as a register number. */ | |
3236 | ||
3237 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) | |
3238 | { | |
3239 | /* Read the register number. */ | |
3240 | pnum = strtol (p, &p_temp, 16); | |
3241 | p1 = (unsigned char *) p_temp; | |
3242 | } | |
3243 | else | |
3244 | p1 = p; | |
43ff13b4 | 3245 | |
c5aa993b | 3246 | if (p1 == p) /* No register number present here */ |
43ff13b4 | 3247 | { |
3c3bea1c | 3248 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 JM |
3249 | if (p1 == NULL) |
3250 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3251 | Packet: '%s'\n", | |
3252 | p, buf); | |
3c3bea1c | 3253 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3254 | { |
3255 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3256 | record_currthread (thread_num); | |
3257 | p = (unsigned char *) p_temp; | |
3258 | } | |
3c3bea1c GS |
3259 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3260 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3261 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3262 | { | |
3263 | remote_stopped_by_watchpoint_p = 1; | |
3264 | p = unpack_varlen_hex (++p1, &addr); | |
3265 | remote_watch_data_address = (CORE_ADDR)addr; | |
3266 | } | |
3267 | else | |
3268 | { | |
3269 | /* Silently skip unknown optional info. */ | |
3270 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3271 | if (p_temp) | |
3272 | p = p_temp; | |
3273 | } | |
43ff13b4 | 3274 | } |
3c3bea1c | 3275 | |
43ff13b4 JM |
3276 | else |
3277 | { | |
ad10f812 | 3278 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3279 | p = p1; |
43ff13b4 JM |
3280 | if (*p++ != ':') |
3281 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3282 | Packet: '%s'\n", | |
3283 | p, buf); | |
3284 | ||
ad10f812 | 3285 | if (reg == NULL) |
43ff13b4 JM |
3286 | warning ("Remote sent bad register number %ld: %s\n\ |
3287 | Packet: '%s'\n", | |
ad10f812 | 3288 | pnum, p, buf); |
43ff13b4 | 3289 | |
ad10f812 | 3290 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum)); |
6c3f2dbf | 3291 | p += 2 * fieldsize; |
ad10f812 | 3292 | if (fieldsize < REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3293 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3294 | supply_register (reg->regnum, regs); |
43ff13b4 JM |
3295 | } |
3296 | ||
3297 | if (*p++ != ';') | |
3298 | { | |
3299 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3300 | warning (" here: %s", p); |
43ff13b4 JM |
3301 | } |
3302 | } | |
3303 | } | |
3304 | /* fall through */ | |
3305 | case 'S': /* Old style status, just signal only */ | |
3306 | status->kind = TARGET_WAITKIND_STOPPED; | |
3307 | status->value.sig = (enum target_signal) | |
3308 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3309 | ||
3310 | if (buf[3] == 'p') | |
3311 | { | |
3312 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3313 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3314 | |
3315 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3316 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3317 | value_from_string ("PDEBUG-")); |
3318 | cisco_kernel_mode = 0; | |
3319 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3320 | record_currthread (thread_num); | |
3321 | } | |
3322 | else if (buf[3] == 'k') | |
3323 | { | |
3324 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3325 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3326 | |
3327 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3328 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3329 | value_from_string ("KDEBUG-")); |
3330 | cisco_kernel_mode = 1; | |
3331 | } | |
3332 | goto got_status; | |
3333 | case 'N': /* Cisco special: status and offsets */ | |
3334 | { | |
3335 | bfd_vma text_addr, data_addr, bss_addr; | |
3336 | bfd_signed_vma text_off, data_off, bss_off; | |
3337 | unsigned char *p1; | |
3338 | ||
3339 | status->kind = TARGET_WAITKIND_STOPPED; | |
3340 | status->value.sig = (enum target_signal) | |
3341 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3342 | ||
c5aa993b | 3343 | if (symfile_objfile == NULL) |
43ff13b4 JM |
3344 | { |
3345 | warning ("Relocation packet recieved with no symbol file. \ | |
3346 | Packet Dropped"); | |
3347 | goto got_status; | |
3348 | } | |
3349 | ||
3350 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3351 | * where AA is the signal number, TT is the new text | |
3352 | * address, DD * is the new data address, and BB is the | |
3353 | * new bss address. */ | |
3354 | ||
3355 | p = &buf[3]; | |
3356 | text_addr = strtoul (p, (char **) &p1, 16); | |
3357 | if (p1 == p || *p1 != ';') | |
3358 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3359 | p = p1 + 1; | |
3360 | data_addr = strtoul (p, (char **) &p1, 16); | |
3361 | if (p1 == p || *p1 != ';') | |
3362 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3363 | p = p1 + 1; | |
3364 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3365 | if (p1 == p) |
43ff13b4 JM |
3366 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3367 | ||
3368 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3369 | &text_off, &data_off, &bss_off) | |
3370 | == 0) | |
c5aa993b | 3371 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
3372 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3373 | ||
3374 | goto got_status; | |
3375 | } | |
3376 | case 'W': /* Target exited */ | |
3377 | { | |
3378 | /* The remote process exited. */ | |
3379 | status->kind = TARGET_WAITKIND_EXITED; | |
3380 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3381 | goto got_status; | |
3382 | } | |
3383 | case 'X': | |
3384 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3385 | status->value.sig = (enum target_signal) | |
3386 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3387 | kill_kludge = 1; | |
3388 | ||
3389 | goto got_status; | |
3390 | case 'O': /* Console output */ | |
3391 | remote_console_output (buf + 1); | |
c4093a6a JM |
3392 | /* Return immediately to the event loop. The event loop will |
3393 | still be waiting on the inferior afterwards. */ | |
3394 | status->kind = TARGET_WAITKIND_IGNORE; | |
3395 | goto got_status; | |
43ff13b4 JM |
3396 | case '\0': |
3397 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3398 | { | |
3399 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3400 | the remote system doesn't support it. */ |
43ff13b4 JM |
3401 | target_terminal_ours_for_output (); |
3402 | printf_filtered | |
3403 | ("Can't send signals to this remote system. %s not sent.\n", | |
3404 | target_signal_to_name (last_sent_signal)); | |
3405 | last_sent_signal = TARGET_SIGNAL_0; | |
3406 | target_terminal_inferior (); | |
3407 | ||
3408 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3409 | putpkt ((char *) buf); | |
3410 | continue; | |
3411 | } | |
3412 | /* else fallthrough */ | |
3413 | default: | |
3414 | warning ("Invalid remote reply: %s", buf); | |
3415 | continue; | |
3416 | } | |
3417 | } | |
c5aa993b | 3418 | got_status: |
43ff13b4 JM |
3419 | if (thread_num != -1) |
3420 | { | |
39f77062 | 3421 | return pid_to_ptid (thread_num); |
43ff13b4 | 3422 | } |
39f77062 | 3423 | return inferior_ptid; |
43ff13b4 JM |
3424 | } |
3425 | ||
c906108c SS |
3426 | /* Number of bytes of registers this stub implements. */ |
3427 | ||
3428 | static int register_bytes_found; | |
3429 | ||
3430 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3431 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c SS |
3432 | |
3433 | /* ARGSUSED */ | |
3434 | static void | |
ad10f812 | 3435 | remote_fetch_registers (int regnum) |
c906108c | 3436 | { |
d01949b6 AC |
3437 | struct remote_state *rs = get_remote_state (); |
3438 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3439 | int i; |
3440 | char *p; | |
ad10f812 | 3441 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3442 | |
39f77062 | 3443 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3444 | |
b323314b AC |
3445 | if (regnum >= 0) |
3446 | { | |
3447 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3448 | gdb_assert (reg != NULL); | |
3449 | if (!reg->in_g_packet) | |
3450 | internal_error (__FILE__, __LINE__, | |
3451 | "Attempt to fetch a non G-packet register when this " | |
3452 | "remote.c does not support the p-packet."); | |
3453 | } | |
3454 | ||
c906108c | 3455 | sprintf (buf, "g"); |
d01949b6 | 3456 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3457 | |
11cf8741 JM |
3458 | /* Save the size of the packet sent to us by the target. Its used |
3459 | as a heuristic when determining the max size of packets that the | |
3460 | target can safely receive. */ | |
d01949b6 AC |
3461 | if ((rs->actual_register_packet_size) == 0) |
3462 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3463 | |
3464 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3465 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3466 | |
3467 | /* We can get out of synch in various cases. If the first character | |
3468 | in the buffer is not a hex character, assume that has happened | |
3469 | and try to fetch another packet to read. */ | |
3470 | while ((buf[0] < '0' || buf[0] > '9') | |
3471 | && (buf[0] < 'a' || buf[0] > 'f') | |
3472 | && buf[0] != 'x') /* New: unavailable register value */ | |
3473 | { | |
3474 | if (remote_debug) | |
0f71a2f6 JM |
3475 | fprintf_unfiltered (gdb_stdlog, |
3476 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3477 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3478 | } |
3479 | ||
3480 | /* Reply describes registers byte by byte, each byte encoded as two | |
3481 | hex characters. Suck them all up, then supply them to the | |
3482 | register cacheing/storage mechanism. */ | |
3483 | ||
3484 | p = buf; | |
ad10f812 | 3485 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3486 | { |
3487 | if (p[0] == 0) | |
3488 | break; | |
3489 | if (p[1] == 0) | |
3490 | { | |
3491 | warning ("Remote reply is of odd length: %s", buf); | |
3492 | /* Don't change register_bytes_found in this case, and don't | |
3493 | print a second warning. */ | |
3494 | goto supply_them; | |
3495 | } | |
3496 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3497 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3498 | else |
3499 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3500 | p += 2; | |
3501 | } | |
3502 | ||
3503 | if (i != register_bytes_found) | |
3504 | { | |
3505 | register_bytes_found = i; | |
2649061d AC |
3506 | if (REGISTER_BYTES_OK_P () |
3507 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3508 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3509 | } |
c5aa993b | 3510 | |
b323314b | 3511 | supply_them: |
ad10f812 | 3512 | { |
b323314b AC |
3513 | int i; |
3514 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3515 | { |
b323314b AC |
3516 | struct packet_reg *r = &rs->regs[i]; |
3517 | if (r->in_g_packet) | |
3518 | { | |
3519 | supply_register (r->regnum, regs + r->offset); | |
3520 | if (buf[r->offset * 2] == 'x') | |
3521 | set_register_cached (i, -1); | |
3522 | } | |
ad10f812 AC |
3523 | } |
3524 | } | |
c906108c SS |
3525 | } |
3526 | ||
3527 | /* Prepare to store registers. Since we may send them all (using a | |
3528 | 'G' request), we have to read out the ones we don't want to change | |
3529 | first. */ | |
3530 | ||
c5aa993b | 3531 | static void |
fba45db2 | 3532 | remote_prepare_to_store (void) |
c906108c | 3533 | { |
cf0e1e0d DJ |
3534 | struct remote_state *rs = get_remote_state (); |
3535 | int i; | |
3536 | char buf[MAX_REGISTER_SIZE]; | |
3537 | ||
c906108c | 3538 | /* Make sure the entire registers array is valid. */ |
5a2468f5 JM |
3539 | switch (remote_protocol_P.support) |
3540 | { | |
3541 | case PACKET_DISABLE: | |
3542 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3543 | /* Make sure all the necessary registers are cached. */ |
3544 | for (i = 0; i < NUM_REGS; i++) | |
3545 | if (rs->regs[i].in_g_packet) | |
3546 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3547 | break; |
3548 | case PACKET_ENABLE: | |
3549 | break; | |
3550 | } | |
3551 | } | |
3552 | ||
ad10f812 | 3553 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
5a2468f5 JM |
3554 | packet was not recognized. */ |
3555 | ||
3556 | static int | |
ad10f812 | 3557 | store_register_using_P (int regnum) |
5a2468f5 | 3558 | { |
d01949b6 | 3559 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3560 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3561 | /* Try storing a single register. */ |
d01949b6 | 3562 | char *buf = alloca (rs->remote_packet_size); |
d9d9c31f | 3563 | char regp[MAX_REGISTER_SIZE]; |
5a2468f5 JM |
3564 | char *p; |
3565 | int i; | |
3566 | ||
ad10f812 | 3567 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3568 | p = buf + strlen (buf); |
ad10f812 AC |
3569 | regcache_collect (reg->regnum, regp); |
3570 | bin2hex (regp, p, REGISTER_RAW_SIZE (reg->regnum)); | |
3571 | remote_send (buf, rs->remote_packet_size); | |
5a2468f5 JM |
3572 | |
3573 | return buf[0] != '\0'; | |
c906108c SS |
3574 | } |
3575 | ||
5a2468f5 | 3576 | |
ad10f812 | 3577 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents |
7302a204 | 3578 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3579 | |
3580 | static void | |
ad10f812 | 3581 | remote_store_registers (int regnum) |
c906108c | 3582 | { |
d01949b6 | 3583 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3584 | char *buf; |
3585 | char *regs; | |
c906108c SS |
3586 | int i; |
3587 | char *p; | |
3588 | ||
39f77062 | 3589 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3590 | |
ad10f812 | 3591 | if (regnum >= 0) |
c906108c | 3592 | { |
5a2468f5 | 3593 | switch (remote_protocol_P.support) |
c906108c | 3594 | { |
5a2468f5 JM |
3595 | case PACKET_DISABLE: |
3596 | break; | |
3597 | case PACKET_ENABLE: | |
ad10f812 | 3598 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3599 | return; |
3600 | else | |
3601 | error ("Protocol error: P packet not recognized by stub"); | |
3602 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3603 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3604 | { |
3605 | /* The stub recognized the 'P' packet. Remember this. */ | |
3606 | remote_protocol_P.support = PACKET_ENABLE; | |
3607 | return; | |
3608 | } | |
3609 | else | |
3610 | { | |
3611 | /* The stub does not support the 'P' packet. Use 'G' | |
3612 | instead, and don't try using 'P' in the future (it | |
3613 | will just waste our time). */ | |
3614 | remote_protocol_P.support = PACKET_DISABLE; | |
3615 | break; | |
3616 | } | |
c906108c | 3617 | } |
c906108c SS |
3618 | } |
3619 | ||
193cb69f AC |
3620 | /* Extract all the registers in the regcache copying them into a |
3621 | local buffer. */ | |
3622 | { | |
b323314b | 3623 | int i; |
ad10f812 AC |
3624 | regs = alloca (rs->sizeof_g_packet); |
3625 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3626 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3627 | { |
b323314b AC |
3628 | struct packet_reg *r = &rs->regs[i]; |
3629 | if (r->in_g_packet) | |
3630 | regcache_collect (r->regnum, regs + r->offset); | |
193cb69f AC |
3631 | } |
3632 | } | |
c906108c SS |
3633 | |
3634 | /* Command describes registers byte by byte, | |
3635 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3636 | buf = alloca (rs->remote_packet_size); |
3637 | p = buf; | |
3638 | *p++ = 'G'; | |
c906108c | 3639 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3640 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3641 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3642 | } |
c906108c SS |
3643 | \f |
3644 | ||
3645 | /* Return the number of hex digits in num. */ | |
3646 | ||
3647 | static int | |
fba45db2 | 3648 | hexnumlen (ULONGEST num) |
c906108c SS |
3649 | { |
3650 | int i; | |
3651 | ||
3652 | for (i = 0; num != 0; i++) | |
3653 | num >>= 4; | |
3654 | ||
3655 | return max (i, 1); | |
3656 | } | |
3657 | ||
2df3850c | 3658 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3659 | |
3660 | static int | |
fba45db2 | 3661 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3662 | { |
c906108c | 3663 | int len = hexnumlen (num); |
2df3850c JM |
3664 | return hexnumnstr (buf, num, len); |
3665 | } | |
3666 | ||
c906108c | 3667 | |
2df3850c | 3668 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3669 | |
2df3850c | 3670 | static int |
fba45db2 | 3671 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3672 | { |
3673 | int i; | |
3674 | ||
3675 | buf[width] = '\0'; | |
3676 | ||
3677 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3678 | { |
c5aa993b | 3679 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3680 | num >>= 4; |
3681 | } | |
3682 | ||
2df3850c | 3683 | return width; |
c906108c SS |
3684 | } |
3685 | ||
3686 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3687 | ||
3688 | static CORE_ADDR | |
fba45db2 | 3689 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3690 | { |
3691 | if (remote_address_size > 0 | |
3692 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3693 | { | |
3694 | /* Only create a mask when that mask can safely be constructed | |
3695 | in a ULONGEST variable. */ | |
3696 | ULONGEST mask = 1; | |
3697 | mask = (mask << remote_address_size) - 1; | |
3698 | addr &= mask; | |
3699 | } | |
3700 | return addr; | |
3701 | } | |
3702 | ||
3703 | /* Determine whether the remote target supports binary downloading. | |
3704 | This is accomplished by sending a no-op memory write of zero length | |
3705 | to the target at the specified address. It does not suffice to send | |
3706 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3707 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3708 | ||
96baa820 JM |
3709 | NOTE: This can still lose if the serial line is not eight-bit |
3710 | clean. In cases like this, the user should clear "remote | |
3711 | X-packet". */ | |
3712 | ||
c906108c | 3713 | static void |
fba45db2 | 3714 | check_binary_download (CORE_ADDR addr) |
c906108c | 3715 | { |
d01949b6 | 3716 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3717 | switch (remote_protocol_binary_download.support) |
c906108c | 3718 | { |
96baa820 JM |
3719 | case PACKET_DISABLE: |
3720 | break; | |
3721 | case PACKET_ENABLE: | |
3722 | break; | |
3723 | case PACKET_SUPPORT_UNKNOWN: | |
3724 | { | |
d01949b6 | 3725 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
3726 | char *p; |
3727 | ||
3728 | p = buf; | |
3729 | *p++ = 'X'; | |
3730 | p += hexnumstr (p, (ULONGEST) addr); | |
3731 | *p++ = ','; | |
3732 | p += hexnumstr (p, (ULONGEST) 0); | |
3733 | *p++ = ':'; | |
3734 | *p = '\0'; | |
3735 | ||
3736 | putpkt_binary (buf, (int) (p - buf)); | |
d01949b6 | 3737 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3738 | |
96baa820 JM |
3739 | if (buf[0] == '\0') |
3740 | { | |
3741 | if (remote_debug) | |
3742 | fprintf_unfiltered (gdb_stdlog, | |
3743 | "binary downloading NOT suppported by target\n"); | |
3744 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3745 | } | |
3746 | else | |
3747 | { | |
3748 | if (remote_debug) | |
3749 | fprintf_unfiltered (gdb_stdlog, | |
3750 | "binary downloading suppported by target\n"); | |
3751 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3752 | } | |
3753 | break; | |
3754 | } | |
c906108c SS |
3755 | } |
3756 | } | |
3757 | ||
3758 | /* Write memory data directly to the remote machine. | |
3759 | This does not inform the data cache; the data cache uses this. | |
3760 | MEMADDR is the address in the remote memory space. | |
3761 | MYADDR is the address of the buffer in our space. | |
3762 | LEN is the number of bytes. | |
3763 | ||
917317f4 JM |
3764 | Returns number of bytes transferred, or 0 (setting errno) for |
3765 | error. Only transfer a single packet. */ | |
c906108c | 3766 | |
449092f6 | 3767 | int |
917317f4 | 3768 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3769 | { |
917317f4 | 3770 | unsigned char *buf; |
c906108c | 3771 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3772 | unsigned char *p; |
3773 | unsigned char *plen; | |
c2d11a7d | 3774 | long sizeof_buf; |
917317f4 JM |
3775 | int plenlen; |
3776 | int todo; | |
3777 | int nr_bytes; | |
c906108c SS |
3778 | |
3779 | /* Verify that the target can support a binary download */ | |
3780 | check_binary_download (memaddr); | |
3781 | ||
917317f4 | 3782 | /* Determine the max packet size. */ |
11cf8741 | 3783 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3784 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3785 | buf = alloca (sizeof_buf); | |
c906108c | 3786 | |
7a292a7a | 3787 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3788 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3789 | ||
917317f4 JM |
3790 | /* construct "M"<memaddr>","<len>":" */ |
3791 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3792 | p = buf; | |
3793 | ||
3794 | /* Append [XM]. Compute a best guess of the number of bytes | |
3795 | actually transfered. */ | |
3796 | switch (remote_protocol_binary_download.support) | |
c906108c | 3797 | { |
917317f4 JM |
3798 | case PACKET_ENABLE: |
3799 | *p++ = 'X'; | |
3800 | /* Best guess at number of bytes that will fit. */ | |
3801 | todo = min (len, max_buf_size); | |
3802 | break; | |
3803 | case PACKET_DISABLE: | |
3804 | *p++ = 'M'; | |
3805 | /* num bytes that will fit */ | |
3806 | todo = min (len, max_buf_size / 2); | |
3807 | break; | |
3808 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3809 | internal_error (__FILE__, __LINE__, |
3810 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3811 | default: |
8e65ff28 | 3812 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 JM |
3813 | } |
3814 | ||
3815 | /* Append <memaddr> */ | |
3816 | memaddr = remote_address_masked (memaddr); | |
3817 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3818 | *p++ = ','; | |
3819 | ||
3820 | /* Append <len>. Retain the location/size of <len>. It may | |
3821 | need to be adjusted once the packet body has been created. */ | |
3822 | plen = p; | |
3823 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3824 | p += plenlen; | |
3825 | *p++ = ':'; | |
3826 | *p = '\0'; | |
3827 | ||
3828 | /* Append the packet body. */ | |
3829 | switch (remote_protocol_binary_download.support) | |
3830 | { | |
3831 | case PACKET_ENABLE: | |
3832 | /* Binary mode. Send target system values byte by byte, in | |
3833 | increasing byte addresses. Only escape certain critical | |
3834 | characters. */ | |
3835 | for (nr_bytes = 0; | |
3836 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3837 | nr_bytes++) | |
c906108c | 3838 | { |
917317f4 JM |
3839 | switch (myaddr[nr_bytes] & 0xff) |
3840 | { | |
3841 | case '$': | |
3842 | case '#': | |
3843 | case 0x7d: | |
3844 | /* These must be escaped */ | |
3845 | *p++ = 0x7d; | |
3846 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3847 | break; | |
3848 | default: | |
3849 | *p++ = myaddr[nr_bytes] & 0xff; | |
3850 | break; | |
3851 | } | |
c906108c | 3852 | } |
917317f4 | 3853 | if (nr_bytes < todo) |
c906108c | 3854 | { |
917317f4 JM |
3855 | /* Escape chars have filled up the buffer prematurely, |
3856 | and we have actually sent fewer bytes than planned. | |
3857 | Fix-up the length field of the packet. Use the same | |
3858 | number of characters as before. */ | |
3859 | ||
3860 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3861 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3862 | } |
917317f4 JM |
3863 | break; |
3864 | case PACKET_DISABLE: | |
3865 | /* Normal mode: Send target system values byte by byte, in | |
3866 | increasing byte addresses. Each byte is encoded as a two hex | |
3867 | value. */ | |
2644f393 | 3868 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3869 | p += 2 * nr_bytes; |
917317f4 JM |
3870 | break; |
3871 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3872 | internal_error (__FILE__, __LINE__, |
3873 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3874 | default: |
8e65ff28 | 3875 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3876 | } |
917317f4 JM |
3877 | |
3878 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3879 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3880 | |
3881 | if (buf[0] == 'E') | |
3882 | { | |
3883 | /* There is no correspondance between what the remote protocol | |
3884 | uses for errors and errno codes. We would like a cleaner way | |
3885 | of representing errors (big enough to include errno codes, | |
3886 | bfd_error codes, and others). But for now just return EIO. */ | |
3887 | errno = EIO; | |
3888 | return 0; | |
3889 | } | |
3890 | ||
3891 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3892 | bytes than we'd planned. */ | |
3893 | return nr_bytes; | |
c906108c SS |
3894 | } |
3895 | ||
3896 | /* Read memory data directly from the remote machine. | |
3897 | This does not use the data cache; the data cache uses this. | |
3898 | MEMADDR is the address in the remote memory space. | |
3899 | MYADDR is the address of the buffer in our space. | |
3900 | LEN is the number of bytes. | |
3901 | ||
3902 | Returns number of bytes transferred, or 0 for error. */ | |
3903 | ||
917317f4 JM |
3904 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3905 | remote targets) shouldn't attempt to read the entire buffer. | |
3906 | Instead it should read a single packet worth of data and then | |
3907 | return the byte size of that packet to the caller. The caller (its | |
3908 | caller and its callers caller ;-) already contains code for | |
3909 | handling partial reads. */ | |
3910 | ||
449092f6 | 3911 | int |
fba45db2 | 3912 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3913 | { |
11cf8741 | 3914 | char *buf; |
c906108c | 3915 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3916 | long sizeof_buf; |
c906108c SS |
3917 | int origlen; |
3918 | ||
11cf8741 JM |
3919 | /* Create a buffer big enough for this packet. */ |
3920 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3921 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3922 | buf = alloca (sizeof_buf); | |
c906108c SS |
3923 | |
3924 | origlen = len; | |
3925 | while (len > 0) | |
3926 | { | |
c906108c SS |
3927 | char *p; |
3928 | int todo; | |
3929 | int i; | |
3930 | ||
c5aa993b | 3931 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3932 | |
3933 | /* construct "m"<memaddr>","<len>" */ | |
3934 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3935 | memaddr = remote_address_masked (memaddr); | |
3936 | p = buf; | |
3937 | *p++ = 'm'; | |
3938 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3939 | *p++ = ','; | |
3940 | p += hexnumstr (p, (ULONGEST) todo); | |
3941 | *p = '\0'; | |
3942 | ||
3943 | putpkt (buf); | |
c2d11a7d | 3944 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3945 | |
66504d44 MS |
3946 | if (buf[0] == 'E' |
3947 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3948 | && buf[3] == '\0') | |
c906108c SS |
3949 | { |
3950 | /* There is no correspondance between what the remote protocol uses | |
3951 | for errors and errno codes. We would like a cleaner way of | |
3952 | representing errors (big enough to include errno codes, bfd_error | |
3953 | codes, and others). But for now just return EIO. */ | |
3954 | errno = EIO; | |
3955 | return 0; | |
3956 | } | |
3957 | ||
c5aa993b JM |
3958 | /* Reply describes memory byte by byte, |
3959 | each byte encoded as two hex characters. */ | |
c906108c SS |
3960 | |
3961 | p = buf; | |
30559e10 | 3962 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3963 | { |
30559e10 MS |
3964 | /* Reply is short. This means that we were able to read |
3965 | only part of what we wanted to. */ | |
3966 | return i + (origlen - len); | |
c906108c SS |
3967 | } |
3968 | myaddr += todo; | |
3969 | memaddr += todo; | |
3970 | len -= todo; | |
3971 | } | |
3972 | return origlen; | |
3973 | } | |
3974 | \f | |
3975 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3976 | transferring to or from debugger address BUFFER. Write to inferior if |
3977 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3978 | for error. TARGET is unused. */ |
392a587b | 3979 | |
c906108c SS |
3980 | /* ARGSUSED */ |
3981 | static int | |
c338868a | 3982 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 3983 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3984 | struct target_ops *target) |
c906108c | 3985 | { |
392a587b JM |
3986 | CORE_ADDR targ_addr; |
3987 | int targ_len; | |
4930751a C |
3988 | int res; |
3989 | ||
f6684c31 AC |
3990 | /* Should this be the selected frame? */ |
3991 | gdbarch_remote_translate_xfer_address (current_gdbarch, current_regcache, | |
3992 | mem_addr, mem_len, | |
3993 | &targ_addr, &targ_len); | |
392a587b | 3994 | if (targ_len <= 0) |
c906108c | 3995 | return 0; |
c906108c | 3996 | |
4930751a C |
3997 | if (should_write) |
3998 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3999 | else | |
4000 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
4001 | ||
4002 | return res; | |
c906108c SS |
4003 | } |
4004 | ||
c5aa993b | 4005 | |
c906108c SS |
4006 | #if 0 |
4007 | /* Enable after 4.12. */ | |
4008 | ||
4009 | void | |
c338868a KB |
4010 | remote_search (int len, char *data, char *mask, CORE_ADDR startaddr, |
4011 | int increment, CORE_ADDR lorange, CORE_ADDR hirange, | |
4012 | CORE_ADDR *addr_found, char *data_found) | |
c906108c SS |
4013 | { |
4014 | if (increment == -4 && len == 4) | |
4015 | { | |
4016 | long mask_long, data_long; | |
4017 | long data_found_long; | |
4018 | CORE_ADDR addr_we_found; | |
d01949b6 | 4019 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4020 | long returned_long[2]; |
4021 | char *p; | |
4022 | ||
4023 | mask_long = extract_unsigned_integer (mask, len); | |
4024 | data_long = extract_unsigned_integer (data, len); | |
4025 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
4026 | putpkt (buf); | |
d01949b6 | 4027 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
4028 | if (buf[0] == '\0') |
4029 | { | |
4030 | /* The stub doesn't support the 't' request. We might want to | |
4031 | remember this fact, but on the other hand the stub could be | |
4032 | switched on us. Maybe we should remember it only until | |
4033 | the next "target remote". */ | |
4034 | generic_search (len, data, mask, startaddr, increment, lorange, | |
4035 | hirange, addr_found, data_found); | |
4036 | return; | |
4037 | } | |
4038 | ||
4039 | if (buf[0] == 'E') | |
4040 | /* There is no correspondance between what the remote protocol uses | |
4041 | for errors and errno codes. We would like a cleaner way of | |
4042 | representing errors (big enough to include errno codes, bfd_error | |
4043 | codes, and others). But for now just use EIO. */ | |
4044 | memory_error (EIO, startaddr); | |
4045 | p = buf; | |
4046 | addr_we_found = 0; | |
4047 | while (*p != '\0' && *p != ',') | |
4048 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
4049 | if (*p == '\0') | |
4050 | error ("Protocol error: short return for search"); | |
4051 | ||
4052 | data_found_long = 0; | |
4053 | while (*p != '\0' && *p != ',') | |
4054 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
4055 | /* Ignore anything after this comma, for future extensions. */ | |
4056 | ||
4057 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
4058 | { | |
4059 | *addr_found = 0; | |
4060 | return; | |
4061 | } | |
4062 | ||
4063 | *addr_found = addr_we_found; | |
4064 | *data_found = store_unsigned_integer (data_we_found, len); | |
4065 | return; | |
4066 | } | |
4067 | generic_search (len, data, mask, startaddr, increment, lorange, | |
4068 | hirange, addr_found, data_found); | |
4069 | } | |
4070 | #endif /* 0 */ | |
4071 | \f | |
4072 | static void | |
fba45db2 | 4073 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4074 | { |
4075 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4076 | } | |
4077 | \f | |
4078 | /* Stuff for dealing with the packets which are part of this protocol. | |
4079 | See comment at top of file for details. */ | |
4080 | ||
4081 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
4082 | ||
4083 | static int | |
fba45db2 | 4084 | readchar (int timeout) |
c906108c SS |
4085 | { |
4086 | int ch; | |
4087 | ||
2cd58942 | 4088 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4089 | |
2acceee2 JM |
4090 | if (ch >= 0) |
4091 | return (ch & 0x7f); | |
4092 | ||
4093 | switch ((enum serial_rc) ch) | |
c906108c SS |
4094 | { |
4095 | case SERIAL_EOF: | |
2acceee2 | 4096 | target_mourn_inferior (); |
c906108c | 4097 | error ("Remote connection closed"); |
2acceee2 | 4098 | /* no return */ |
c906108c SS |
4099 | case SERIAL_ERROR: |
4100 | perror_with_name ("Remote communication error"); | |
2acceee2 | 4101 | /* no return */ |
c906108c | 4102 | case SERIAL_TIMEOUT: |
2acceee2 | 4103 | break; |
c906108c | 4104 | } |
2acceee2 | 4105 | return ch; |
c906108c SS |
4106 | } |
4107 | ||
4108 | /* Send the command in BUF to the remote machine, and read the reply | |
4109 | into BUF. Report an error if we get an error reply. */ | |
4110 | ||
4111 | static void | |
c2d11a7d JM |
4112 | remote_send (char *buf, |
4113 | long sizeof_buf) | |
c906108c SS |
4114 | { |
4115 | putpkt (buf); | |
c2d11a7d | 4116 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
4117 | |
4118 | if (buf[0] == 'E') | |
4119 | error ("Remote failure reply: %s", buf); | |
4120 | } | |
4121 | ||
4122 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4123 | string notation. */ | |
4124 | ||
4125 | static void | |
fba45db2 | 4126 | print_packet (char *buf) |
c906108c SS |
4127 | { |
4128 | puts_filtered ("\""); | |
43e526b9 | 4129 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4130 | puts_filtered ("\""); |
4131 | } | |
4132 | ||
4133 | int | |
fba45db2 | 4134 | putpkt (char *buf) |
c906108c SS |
4135 | { |
4136 | return putpkt_binary (buf, strlen (buf)); | |
4137 | } | |
4138 | ||
4139 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 4140 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
4141 | to account for the $, # and checksum, and for a possible /0 if we are |
4142 | debugging (remote_debug) and want to print the sent packet as a string */ | |
4143 | ||
4144 | static int | |
fba45db2 | 4145 | putpkt_binary (char *buf, int cnt) |
c906108c | 4146 | { |
d01949b6 | 4147 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4148 | int i; |
4149 | unsigned char csum = 0; | |
11cf8741 | 4150 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 4151 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 4152 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 4153 | |
c906108c SS |
4154 | int ch; |
4155 | int tcount = 0; | |
4156 | char *p; | |
4157 | ||
4158 | /* Copy the packet into buffer BUF2, encapsulating it | |
4159 | and giving it a checksum. */ | |
4160 | ||
c906108c SS |
4161 | p = buf2; |
4162 | *p++ = '$'; | |
4163 | ||
4164 | for (i = 0; i < cnt; i++) | |
4165 | { | |
4166 | csum += buf[i]; | |
4167 | *p++ = buf[i]; | |
4168 | } | |
4169 | *p++ = '#'; | |
4170 | *p++ = tohex ((csum >> 4) & 0xf); | |
4171 | *p++ = tohex (csum & 0xf); | |
4172 | ||
4173 | /* Send it over and over until we get a positive ack. */ | |
4174 | ||
4175 | while (1) | |
4176 | { | |
4177 | int started_error_output = 0; | |
4178 | ||
4179 | if (remote_debug) | |
4180 | { | |
4181 | *p = '\0'; | |
43e526b9 JM |
4182 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4183 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4184 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4185 | gdb_flush (gdb_stdlog); |
c906108c | 4186 | } |
2cd58942 | 4187 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
4188 | perror_with_name ("putpkt: write failed"); |
4189 | ||
4190 | /* read until either a timeout occurs (-2) or '+' is read */ | |
4191 | while (1) | |
4192 | { | |
4193 | ch = readchar (remote_timeout); | |
4194 | ||
c5aa993b | 4195 | if (remote_debug) |
c906108c SS |
4196 | { |
4197 | switch (ch) | |
4198 | { | |
4199 | case '+': | |
1216fa2c | 4200 | case '-': |
c906108c SS |
4201 | case SERIAL_TIMEOUT: |
4202 | case '$': | |
4203 | if (started_error_output) | |
4204 | { | |
4205 | putchar_unfiltered ('\n'); | |
4206 | started_error_output = 0; | |
4207 | } | |
4208 | } | |
4209 | } | |
4210 | ||
4211 | switch (ch) | |
4212 | { | |
4213 | case '+': | |
4214 | if (remote_debug) | |
0f71a2f6 | 4215 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4216 | return 1; |
1216fa2c AC |
4217 | case '-': |
4218 | if (remote_debug) | |
4219 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4220 | case SERIAL_TIMEOUT: |
c5aa993b | 4221 | tcount++; |
c906108c SS |
4222 | if (tcount > 3) |
4223 | return 0; | |
4224 | break; /* Retransmit buffer */ | |
4225 | case '$': | |
4226 | { | |
40e3f985 FN |
4227 | if (remote_debug) |
4228 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
4229 | /* It's probably an old response, and we're out of sync. |
4230 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 4231 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 4232 | continue; /* Now, go look for + */ |
c906108c SS |
4233 | } |
4234 | default: | |
4235 | if (remote_debug) | |
4236 | { | |
4237 | if (!started_error_output) | |
4238 | { | |
4239 | started_error_output = 1; | |
0f71a2f6 | 4240 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4241 | } |
0f71a2f6 | 4242 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4243 | } |
4244 | continue; | |
4245 | } | |
4246 | break; /* Here to retransmit */ | |
4247 | } | |
4248 | ||
4249 | #if 0 | |
4250 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4251 | able to get out next time we call QUIT, without anything as |
4252 | violent as interrupt_query. If we want to provide a way out of | |
4253 | here without getting to the next QUIT, it should be based on | |
4254 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4255 | if (quit_flag) |
4256 | { | |
4257 | quit_flag = 0; | |
4258 | interrupt_query (); | |
4259 | } | |
4260 | #endif | |
4261 | } | |
4262 | } | |
4263 | ||
0f71a2f6 JM |
4264 | static int remote_cisco_mode; |
4265 | ||
c906108c SS |
4266 | /* Come here after finding the start of the frame. Collect the rest |
4267 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4268 | compression. No more than sizeof_buf-1 characters are read so that |
4269 | the buffer can be NUL terminated. | |
c906108c | 4270 | |
c2d11a7d JM |
4271 | Returns -1 on error, number of characters in buffer (ignoring the |
4272 | trailing NULL) on success. (could be extended to return one of the | |
4273 | SERIAL status indications). */ | |
4274 | ||
4275 | static long | |
4276 | read_frame (char *buf, | |
4277 | long sizeof_buf) | |
c906108c SS |
4278 | { |
4279 | unsigned char csum; | |
c2d11a7d | 4280 | long bc; |
c906108c SS |
4281 | int c; |
4282 | ||
4283 | csum = 0; | |
c2d11a7d | 4284 | bc = 0; |
c906108c SS |
4285 | |
4286 | while (1) | |
4287 | { | |
c2d11a7d | 4288 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4289 | c = readchar (remote_timeout); |
c906108c SS |
4290 | switch (c) |
4291 | { | |
4292 | case SERIAL_TIMEOUT: | |
4293 | if (remote_debug) | |
0f71a2f6 | 4294 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4295 | return -1; |
c906108c SS |
4296 | case '$': |
4297 | if (remote_debug) | |
0f71a2f6 JM |
4298 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4299 | gdb_stdlog); | |
c2d11a7d | 4300 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4301 | case '#': |
4302 | { | |
4303 | unsigned char pktcsum; | |
e1b09194 AC |
4304 | int check_0 = 0; |
4305 | int check_1 = 0; | |
c906108c | 4306 | |
c2d11a7d | 4307 | buf[bc] = '\0'; |
c906108c | 4308 | |
e1b09194 AC |
4309 | check_0 = readchar (remote_timeout); |
4310 | if (check_0 >= 0) | |
4311 | check_1 = readchar (remote_timeout); | |
4312 | ||
4313 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
4314 | { | |
4315 | if (remote_debug) | |
4316 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4317 | return -1; | |
4318 | } | |
4319 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4320 | { |
4321 | if (remote_debug) | |
4322 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4323 | return -1; | |
4324 | } | |
c906108c | 4325 | |
e1b09194 | 4326 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4327 | if (csum == pktcsum) |
c2d11a7d | 4328 | return bc; |
c906108c | 4329 | |
c5aa993b | 4330 | if (remote_debug) |
c906108c | 4331 | { |
0f71a2f6 | 4332 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4333 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4334 | pktcsum, csum); |
4335 | fputs_filtered (buf, gdb_stdlog); | |
4336 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4337 | } |
c2d11a7d JM |
4338 | /* Number of characters in buffer ignoring trailing |
4339 | NUL. */ | |
4340 | return -1; | |
c906108c SS |
4341 | } |
4342 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4343 | { |
4344 | int repeat; | |
4345 | csum += c; | |
c906108c | 4346 | |
c2c6d25f JM |
4347 | if (remote_cisco_mode == 0) |
4348 | { | |
4349 | c = readchar (remote_timeout); | |
4350 | csum += c; | |
4351 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
4352 | } | |
4353 | else | |
4354 | { | |
4355 | /* Cisco's run-length encoding variant uses two | |
4356 | hex chars to represent the repeat count. */ | |
4357 | ||
4358 | c = readchar (remote_timeout); | |
4359 | csum += c; | |
4360 | repeat = fromhex (c) << 4; | |
4361 | c = readchar (remote_timeout); | |
4362 | csum += c; | |
4363 | repeat += fromhex (c); | |
4364 | } | |
c906108c | 4365 | |
c2d11a7d JM |
4366 | /* The character before ``*'' is repeated. */ |
4367 | ||
c2c6d25f | 4368 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4369 | && bc > 0 |
fb6e5c55 | 4370 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4371 | { |
c2d11a7d JM |
4372 | memset (&buf[bc], buf[bc - 1], repeat); |
4373 | bc += repeat; | |
c2c6d25f JM |
4374 | continue; |
4375 | } | |
4376 | ||
c2d11a7d | 4377 | buf[bc] = '\0'; |
c2c6d25f JM |
4378 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4379 | puts_filtered (buf); | |
4380 | puts_filtered ("\n"); | |
c2d11a7d | 4381 | return -1; |
c2c6d25f | 4382 | } |
c906108c | 4383 | default: |
c2d11a7d | 4384 | if (bc < sizeof_buf - 1) |
c906108c | 4385 | { |
c2d11a7d | 4386 | buf[bc++] = c; |
c906108c SS |
4387 | csum += c; |
4388 | continue; | |
4389 | } | |
4390 | ||
c2d11a7d | 4391 | buf[bc] = '\0'; |
c906108c SS |
4392 | puts_filtered ("Remote packet too long: "); |
4393 | puts_filtered (buf); | |
4394 | puts_filtered ("\n"); | |
4395 | ||
c2d11a7d | 4396 | return -1; |
c906108c SS |
4397 | } |
4398 | } | |
4399 | } | |
4400 | ||
4401 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4402 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4403 | this is used (in synchronous mode) to wait for a target that is is | |
4404 | executing user code to stop. */ | |
d9fcf2fb JM |
4405 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4406 | don't have to change all the calls to getpkt to deal with the | |
4407 | return value, because at the moment I don't know what the right | |
4408 | thing to do it for those. */ | |
c906108c | 4409 | void |
c2d11a7d JM |
4410 | getpkt (char *buf, |
4411 | long sizeof_buf, | |
4412 | int forever) | |
d9fcf2fb JM |
4413 | { |
4414 | int timed_out; | |
4415 | ||
4416 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4417 | } | |
4418 | ||
4419 | ||
4420 | /* Read a packet from the remote machine, with error checking, and | |
4421 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4422 | this is used (in synchronous mode) to wait for a target that is is | |
4423 | executing user code to stop. If FOREVER == 0, this function is | |
4424 | allowed to time out gracefully and return an indication of this to | |
4425 | the caller. */ | |
3172dc30 | 4426 | static int |
d9fcf2fb JM |
4427 | getpkt_sane (char *buf, |
4428 | long sizeof_buf, | |
4429 | int forever) | |
c906108c SS |
4430 | { |
4431 | int c; | |
4432 | int tries; | |
4433 | int timeout; | |
4434 | int val; | |
4435 | ||
c5aa993b | 4436 | strcpy (buf, "timeout"); |
c906108c SS |
4437 | |
4438 | if (forever) | |
4439 | { | |
c906108c | 4440 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4441 | } |
4442 | ||
4443 | else | |
4444 | timeout = remote_timeout; | |
4445 | ||
4446 | #define MAX_TRIES 3 | |
4447 | ||
4448 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4449 | { | |
4450 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4451 | continuously, but if it pauses, we'll get a zero from readchar |
4452 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4453 | |
4454 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4455 | After that, we expect characters to arrive at a brisk pace. They |
4456 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4457 | |
4458 | do | |
4459 | { | |
4460 | c = readchar (timeout); | |
4461 | ||
4462 | if (c == SERIAL_TIMEOUT) | |
4463 | { | |
2acceee2 | 4464 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4465 | { |
2acceee2 | 4466 | QUIT; |
c906108c SS |
4467 | target_mourn_inferior (); |
4468 | error ("Watchdog has expired. Target detached.\n"); | |
4469 | } | |
c906108c | 4470 | if (remote_debug) |
0f71a2f6 | 4471 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4472 | goto retry; |
4473 | } | |
4474 | } | |
4475 | while (c != '$'); | |
4476 | ||
4477 | /* We've found the start of a packet, now collect the data. */ | |
4478 | ||
c2d11a7d | 4479 | val = read_frame (buf, sizeof_buf); |
c906108c | 4480 | |
c2d11a7d | 4481 | if (val >= 0) |
c906108c SS |
4482 | { |
4483 | if (remote_debug) | |
43e526b9 JM |
4484 | { |
4485 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4486 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4487 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4488 | } | |
2cd58942 | 4489 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4490 | return 0; |
c906108c SS |
4491 | } |
4492 | ||
4493 | /* Try the whole thing again. */ | |
4494 | retry: | |
2cd58942 | 4495 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4496 | } |
4497 | ||
4498 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4499 | ||
4500 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4501 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4502 | return 1; |
c906108c SS |
4503 | } |
4504 | \f | |
4505 | static void | |
fba45db2 | 4506 | remote_kill (void) |
c906108c SS |
4507 | { |
4508 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4509 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4510 | if (kill_kludge) | |
4511 | { | |
4512 | kill_kludge = 0; | |
4513 | target_mourn_inferior (); | |
4514 | return; | |
4515 | } | |
4516 | ||
4517 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4518 | speaking terms with the remote system. */ | |
c5aa993b | 4519 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4520 | |
4521 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4522 | we do or not. For the existing stubs, kill is a noop. */ | |
4523 | target_mourn_inferior (); | |
4524 | } | |
4525 | ||
43ff13b4 JM |
4526 | /* Async version of remote_kill. */ |
4527 | static void | |
fba45db2 | 4528 | remote_async_kill (void) |
43ff13b4 JM |
4529 | { |
4530 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4531 | if (target_is_async_p ()) |
2cd58942 | 4532 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4533 | |
4534 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4535 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4536 | if (kill_kludge) | |
4537 | { | |
4538 | kill_kludge = 0; | |
4539 | target_mourn_inferior (); | |
4540 | return; | |
4541 | } | |
4542 | ||
4543 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4544 | speaking terms with the remote system. */ | |
c5aa993b | 4545 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4546 | |
4547 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4548 | we do or not. For the existing stubs, kill is a noop. */ | |
4549 | target_mourn_inferior (); | |
4550 | } | |
4551 | ||
c906108c | 4552 | static void |
fba45db2 | 4553 | remote_mourn (void) |
c906108c SS |
4554 | { |
4555 | remote_mourn_1 (&remote_ops); | |
4556 | } | |
4557 | ||
53a5351d | 4558 | static void |
fba45db2 | 4559 | remote_async_mourn (void) |
53a5351d JM |
4560 | { |
4561 | remote_mourn_1 (&remote_async_ops); | |
4562 | } | |
4563 | ||
c906108c | 4564 | static void |
fba45db2 | 4565 | extended_remote_mourn (void) |
c906108c SS |
4566 | { |
4567 | /* We do _not_ want to mourn the target like this; this will | |
4568 | remove the extended remote target from the target stack, | |
4569 | and the next time the user says "run" it'll fail. | |
4570 | ||
4571 | FIXME: What is the right thing to do here? */ | |
4572 | #if 0 | |
4573 | remote_mourn_1 (&extended_remote_ops); | |
4574 | #endif | |
4575 | } | |
4576 | ||
4577 | /* Worker function for remote_mourn. */ | |
4578 | static void | |
fba45db2 | 4579 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4580 | { |
4581 | unpush_target (target); | |
4582 | generic_mourn_inferior (); | |
4583 | } | |
4584 | ||
4585 | /* In the extended protocol we want to be able to do things like | |
4586 | "run" and have them basically work as expected. So we need | |
4587 | a special create_inferior function. | |
4588 | ||
4589 | FIXME: One day add support for changing the exec file | |
4590 | we're debugging, arguments and an environment. */ | |
4591 | ||
4592 | static void | |
fba45db2 | 4593 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4594 | { |
4595 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4596 | the remote server. */ | |
4597 | remove_breakpoints (); | |
4598 | ||
4599 | /* Now restart the remote server. */ | |
4600 | extended_remote_restart (); | |
4601 | ||
4602 | /* Now put the breakpoints back in. This way we're safe if the | |
4603 | restart function works via a unix fork on the remote side. */ | |
4604 | insert_breakpoints (); | |
4605 | ||
4606 | /* Clean up from the last time we were running. */ | |
4607 | clear_proceed_status (); | |
4608 | ||
4609 | /* Let the remote process run. */ | |
4610 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4611 | } | |
4612 | ||
43ff13b4 JM |
4613 | /* Async version of extended_remote_create_inferior. */ |
4614 | static void | |
fba45db2 | 4615 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4616 | { |
4617 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4618 | the remote server. */ | |
4619 | remove_breakpoints (); | |
4620 | ||
4621 | /* If running asynchronously, register the target file descriptor | |
4622 | with the event loop. */ | |
2acceee2 JM |
4623 | if (event_loop_p && target_can_async_p ()) |
4624 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4625 | |
4626 | /* Now restart the remote server. */ | |
4627 | extended_remote_restart (); | |
4628 | ||
4629 | /* Now put the breakpoints back in. This way we're safe if the | |
4630 | restart function works via a unix fork on the remote side. */ | |
4631 | insert_breakpoints (); | |
4632 | ||
4633 | /* Clean up from the last time we were running. */ | |
4634 | clear_proceed_status (); | |
4635 | ||
4636 | /* Let the remote process run. */ | |
4637 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4638 | } | |
c906108c | 4639 | \f |
c5aa993b | 4640 | |
aaab4dba | 4641 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4642 | instruction than other targets; in those use |
4643 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4644 | Also, bi-endian targets may define | |
4645 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4646 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4647 | just call the standard routines that are in mem-break.c. */ | |
4648 | ||
4649 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4650 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4651 | the ARCH-OS-tdep.c code can override the default. */ | |
4652 | ||
4653 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4654 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4655 | #endif |
4656 | ||
7fec2c59 | 4657 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4658 | |
4659 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4660 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4661 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4662 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4663 | #endif |
4664 | ||
7fec2c59 AC |
4665 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4666 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4667 | |
7fec2c59 | 4668 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4669 | |
aaab4dba AC |
4670 | /* Insert a breakpoint on targets that don't have any better |
4671 | breakpoint support. We read the contents of the target location | |
4672 | and stash it, then overwrite it with a breakpoint instruction. | |
4673 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4674 | is a pointer to memory allocated for saving the target contents. | |
4675 | It is guaranteed by the caller to be long enough to save the number | |
4676 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4677 | |
4678 | static int | |
fba45db2 | 4679 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4680 | { |
d01949b6 | 4681 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4682 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4683 | int val; |
96baa820 JM |
4684 | #endif |
4685 | int bp_size; | |
4686 | ||
d471ea57 AC |
4687 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4688 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4689 | fails, and the user has explicitly requested the Z support then | |
4690 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4691 | |
d471ea57 | 4692 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4693 | { |
d01949b6 | 4694 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4695 | char *p = buf; |
96baa820 | 4696 | |
0caabb7e | 4697 | addr = remote_address_masked (addr); |
96baa820 JM |
4698 | *(p++) = 'Z'; |
4699 | *(p++) = '0'; | |
4700 | *(p++) = ','; | |
0caabb7e AC |
4701 | p += hexnumstr (p, (ULONGEST) addr); |
4702 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4703 | sprintf (p, ",%d", bp_size); |
4704 | ||
4705 | putpkt (buf); | |
d01949b6 | 4706 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4707 | |
d471ea57 | 4708 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4709 | { |
d471ea57 AC |
4710 | case PACKET_ERROR: |
4711 | return -1; | |
4712 | case PACKET_OK: | |
4713 | return 0; | |
4714 | case PACKET_UNKNOWN: | |
4715 | break; | |
96baa820 JM |
4716 | } |
4717 | } | |
c906108c | 4718 | |
7fec2c59 | 4719 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4720 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4721 | ||
4722 | if (val == 0) | |
4723 | { | |
d7449b42 | 4724 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4725 | val = target_write_memory (addr, (char *) big_break_insn, |
4726 | sizeof big_break_insn); | |
4727 | else | |
4728 | val = target_write_memory (addr, (char *) little_break_insn, | |
4729 | sizeof little_break_insn); | |
4730 | } | |
4731 | ||
4732 | return val; | |
4733 | #else | |
4734 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4735 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4736 | } |
4737 | ||
4738 | static int | |
fba45db2 | 4739 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4740 | { |
d01949b6 | 4741 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4742 | int bp_size; |
4743 | ||
d471ea57 | 4744 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4745 | { |
d01949b6 | 4746 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4747 | char *p = buf; |
96baa820 JM |
4748 | |
4749 | *(p++) = 'z'; | |
4750 | *(p++) = '0'; | |
4751 | *(p++) = ','; | |
4752 | ||
0caabb7e AC |
4753 | addr = remote_address_masked (addr); |
4754 | p += hexnumstr (p, (ULONGEST) addr); | |
4755 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4756 | sprintf (p, ",%d", bp_size); |
4757 | ||
4758 | putpkt (buf); | |
d01949b6 | 4759 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4760 | |
4761 | return (buf[0] == 'E'); | |
4762 | } | |
4763 | ||
7fec2c59 | 4764 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4765 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4766 | #else | |
4767 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4768 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4769 | } |
4770 | ||
d471ea57 AC |
4771 | static int |
4772 | watchpoint_to_Z_packet (int type) | |
4773 | { | |
4774 | switch (type) | |
4775 | { | |
4776 | case hw_write: | |
4777 | return 2; | |
4778 | break; | |
4779 | case hw_read: | |
4780 | return 3; | |
4781 | break; | |
4782 | case hw_access: | |
4783 | return 4; | |
4784 | break; | |
4785 | default: | |
8e65ff28 AC |
4786 | internal_error (__FILE__, __LINE__, |
4787 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4788 | } |
4789 | } | |
4790 | ||
3c3bea1c | 4791 | static int |
fba45db2 | 4792 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4793 | { |
d01949b6 AC |
4794 | struct remote_state *rs = get_remote_state (); |
4795 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4796 | char *p; |
d471ea57 | 4797 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4798 | |
d471ea57 AC |
4799 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4800 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4801 | remote_protocol_Z[packet].name, | |
4802 | remote_protocol_Z[packet].title); | |
96baa820 | 4803 | |
d471ea57 | 4804 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4805 | p = strchr (buf, '\0'); |
4806 | addr = remote_address_masked (addr); | |
4807 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4808 | sprintf (p, ",%x", len); |
96baa820 JM |
4809 | |
4810 | putpkt (buf); | |
d01949b6 | 4811 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4812 | |
d471ea57 AC |
4813 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4814 | { | |
4815 | case PACKET_ERROR: | |
4816 | case PACKET_UNKNOWN: | |
4817 | return -1; | |
4818 | case PACKET_OK: | |
4819 | return 0; | |
4820 | } | |
8e65ff28 AC |
4821 | internal_error (__FILE__, __LINE__, |
4822 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4823 | } |
4824 | ||
d471ea57 | 4825 | |
3c3bea1c | 4826 | static int |
fba45db2 | 4827 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4828 | { |
d01949b6 AC |
4829 | struct remote_state *rs = get_remote_state (); |
4830 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4831 | char *p; |
d471ea57 AC |
4832 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4833 | ||
4834 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4835 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4836 | remote_protocol_Z[packet].name, | |
4837 | remote_protocol_Z[packet].title); | |
96baa820 | 4838 | |
d471ea57 | 4839 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4840 | p = strchr (buf, '\0'); |
4841 | addr = remote_address_masked (addr); | |
4842 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4843 | sprintf (p, ",%x", len); |
96baa820 | 4844 | putpkt (buf); |
d01949b6 | 4845 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4846 | |
d471ea57 AC |
4847 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4848 | { | |
4849 | case PACKET_ERROR: | |
4850 | case PACKET_UNKNOWN: | |
4851 | return -1; | |
4852 | case PACKET_OK: | |
4853 | return 0; | |
4854 | } | |
8e65ff28 AC |
4855 | internal_error (__FILE__, __LINE__, |
4856 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4857 | } |
4858 | ||
3c3bea1c | 4859 | |
501eef12 AC |
4860 | int remote_hw_watchpoint_limit = -1; |
4861 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4862 | |
b9362cc7 | 4863 | static int |
3c3bea1c | 4864 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4865 | { |
3c3bea1c GS |
4866 | if (type == bp_hardware_breakpoint) |
4867 | { | |
4868 | if (remote_hw_breakpoint_limit == 0) | |
4869 | return 0; | |
501eef12 AC |
4870 | else if (remote_hw_breakpoint_limit < 0) |
4871 | return 1; | |
3c3bea1c GS |
4872 | else if (cnt <= remote_hw_breakpoint_limit) |
4873 | return 1; | |
4874 | } | |
4875 | else | |
4876 | { | |
4877 | if (remote_hw_watchpoint_limit == 0) | |
4878 | return 0; | |
501eef12 AC |
4879 | else if (remote_hw_watchpoint_limit < 0) |
4880 | return 1; | |
3c3bea1c GS |
4881 | else if (ot) |
4882 | return -1; | |
4883 | else if (cnt <= remote_hw_watchpoint_limit) | |
4884 | return 1; | |
4885 | } | |
4886 | return -1; | |
4887 | } | |
4888 | ||
b9362cc7 | 4889 | static int |
3c3bea1c GS |
4890 | remote_stopped_by_watchpoint (void) |
4891 | { | |
4892 | return remote_stopped_by_watchpoint_p; | |
4893 | } | |
4894 | ||
b9362cc7 | 4895 | static CORE_ADDR |
3c3bea1c GS |
4896 | remote_stopped_data_address (void) |
4897 | { | |
4898 | if (remote_stopped_by_watchpoint ()) | |
4899 | return remote_watch_data_address; | |
4900 | return (CORE_ADDR)0; | |
4901 | } | |
4902 | ||
4903 | ||
4904 | static int | |
4905 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4906 | { | |
4907 | int len = 0; | |
d01949b6 AC |
4908 | struct remote_state *rs = get_remote_state (); |
4909 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4910 | char *p = buf; |
96baa820 | 4911 | |
c8189ed1 GS |
4912 | /* The length field should be set to the size of a breakpoint |
4913 | instruction. */ | |
4914 | ||
4915 | BREAKPOINT_FROM_PC (&addr, &len); | |
3c3bea1c | 4916 | |
d471ea57 AC |
4917 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4918 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4919 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4920 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4921 | ||
96baa820 JM |
4922 | *(p++) = 'Z'; |
4923 | *(p++) = '1'; | |
4924 | *(p++) = ','; | |
4925 | ||
4926 | addr = remote_address_masked (addr); | |
4927 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4928 | sprintf (p, ",%x", len); |
96baa820 JM |
4929 | |
4930 | putpkt (buf); | |
d01949b6 | 4931 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4932 | |
d471ea57 AC |
4933 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4934 | { | |
4935 | case PACKET_ERROR: | |
4936 | case PACKET_UNKNOWN: | |
4937 | return -1; | |
4938 | case PACKET_OK: | |
4939 | return 0; | |
4940 | } | |
8e65ff28 | 4941 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4942 | "remote_insert_hw_breakpoint: reached end of function"); |
96baa820 JM |
4943 | } |
4944 | ||
d471ea57 | 4945 | |
3c3bea1c GS |
4946 | static int |
4947 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
96baa820 | 4948 | { |
3c3bea1c | 4949 | int len; |
d01949b6 AC |
4950 | struct remote_state *rs = get_remote_state (); |
4951 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4952 | char *p = buf; |
c8189ed1 GS |
4953 | |
4954 | /* The length field should be set to the size of a breakpoint | |
4955 | instruction. */ | |
4956 | ||
4957 | BREAKPOINT_FROM_PC (&addr, &len); | |
4958 | ||
d471ea57 AC |
4959 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4960 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4961 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4962 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4963 | ||
96baa820 JM |
4964 | *(p++) = 'z'; |
4965 | *(p++) = '1'; | |
4966 | *(p++) = ','; | |
4967 | ||
4968 | addr = remote_address_masked (addr); | |
4969 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4970 | sprintf (p, ",%x", len); |
96baa820 JM |
4971 | |
4972 | putpkt(buf); | |
d01949b6 | 4973 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4974 | |
d471ea57 AC |
4975 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4976 | { | |
4977 | case PACKET_ERROR: | |
4978 | case PACKET_UNKNOWN: | |
4979 | return -1; | |
4980 | case PACKET_OK: | |
4981 | return 0; | |
4982 | } | |
8e65ff28 | 4983 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4984 | "remote_remove_hw_breakpoint: reached end of function"); |
96baa820 | 4985 | } |
96baa820 | 4986 | |
c906108c SS |
4987 | /* Some targets are only capable of doing downloads, and afterwards |
4988 | they switch to the remote serial protocol. This function provides | |
4989 | a clean way to get from the download target to the remote target. | |
4990 | It's basically just a wrapper so that we don't have to expose any | |
4991 | of the internal workings of remote.c. | |
4992 | ||
4993 | Prior to calling this routine, you should shutdown the current | |
4994 | target code, else you will get the "A program is being debugged | |
4995 | already..." message. Usually a call to pop_target() suffices. */ | |
4996 | ||
4997 | void | |
fba45db2 | 4998 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4999 | { |
5000 | printf_filtered ("Switching to remote protocol\n"); | |
5001 | remote_open (name, from_tty); | |
5002 | } | |
5003 | ||
c906108c SS |
5004 | /* Table used by the crc32 function to calcuate the checksum. */ |
5005 | ||
c5aa993b JM |
5006 | static unsigned long crc32_table[256] = |
5007 | {0, 0}; | |
c906108c SS |
5008 | |
5009 | static unsigned long | |
fba45db2 | 5010 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5011 | { |
c5aa993b | 5012 | if (!crc32_table[1]) |
c906108c SS |
5013 | { |
5014 | /* Initialize the CRC table and the decoding table. */ | |
5015 | int i, j; | |
5016 | unsigned int c; | |
5017 | ||
5018 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5019 | { |
5020 | for (c = i << 24, j = 8; j > 0; --j) | |
5021 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5022 | crc32_table[i] = c; | |
5023 | } | |
c906108c SS |
5024 | } |
5025 | ||
5026 | while (len--) | |
5027 | { | |
5028 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5029 | buf++; | |
5030 | } | |
5031 | return crc; | |
5032 | } | |
5033 | ||
5034 | /* compare-sections command | |
5035 | ||
5036 | With no arguments, compares each loadable section in the exec bfd | |
5037 | with the same memory range on the target, and reports mismatches. | |
5038 | Useful for verifying the image on the target against the exec file. | |
5039 | Depends on the target understanding the new "qCRC:" request. */ | |
5040 | ||
e514a9d6 JM |
5041 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5042 | target method (target verify memory) and generic version of the | |
5043 | actual command. This will allow other high-level code (especially | |
5044 | generic_load()) to make use of this target functionality. */ | |
5045 | ||
c906108c | 5046 | static void |
fba45db2 | 5047 | compare_sections_command (char *args, int from_tty) |
c906108c | 5048 | { |
d01949b6 | 5049 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5050 | asection *s; |
5051 | unsigned long host_crc, target_crc; | |
5052 | extern bfd *exec_bfd; | |
5053 | struct cleanup *old_chain; | |
085dd6e6 JM |
5054 | char *tmp; |
5055 | char *sectdata; | |
ce359b09 | 5056 | const char *sectname; |
d01949b6 | 5057 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
5058 | bfd_size_type size; |
5059 | bfd_vma lma; | |
5060 | int matched = 0; | |
5061 | int mismatched = 0; | |
5062 | ||
5063 | if (!exec_bfd) | |
5064 | error ("command cannot be used without an exec file"); | |
5065 | if (!current_target.to_shortname || | |
5066 | strcmp (current_target.to_shortname, "remote") != 0) | |
5067 | error ("command can only be used with remote target"); | |
5068 | ||
c5aa993b | 5069 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5070 | { |
5071 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5072 | continue; /* skip non-loadable section */ |
c906108c SS |
5073 | |
5074 | size = bfd_get_section_size_before_reloc (s); | |
5075 | if (size == 0) | |
c5aa993b | 5076 | continue; /* skip zero-length section */ |
c906108c | 5077 | |
ce359b09 | 5078 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5079 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5080 | continue; /* not the section selected by user */ |
c906108c | 5081 | |
c5aa993b | 5082 | matched = 1; /* do this section */ |
c906108c SS |
5083 | lma = s->lma; |
5084 | /* FIXME: assumes lma can fit into long */ | |
5085 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
5086 | putpkt (buf); | |
5087 | ||
5088 | /* be clever; compute the host_crc before waiting for target reply */ | |
5089 | sectdata = xmalloc (size); | |
b8c9b27d | 5090 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5091 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5092 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5093 | ||
d01949b6 | 5094 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 5095 | if (buf[0] == 'E') |
823ca731 AC |
5096 | error ("target memory fault, section %s, range 0x%s -- 0x%s", |
5097 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5098 | if (buf[0] != 'C') |
5099 | error ("remote target does not support this operation"); | |
5100 | ||
5101 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
5102 | target_crc = target_crc * 16 + fromhex (*tmp); | |
5103 | ||
d4f3574e SS |
5104 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5105 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5106 | if (host_crc == target_crc) |
5107 | printf_filtered ("matched.\n"); | |
5108 | else | |
c5aa993b JM |
5109 | { |
5110 | printf_filtered ("MIS-MATCHED!\n"); | |
5111 | mismatched++; | |
5112 | } | |
c906108c SS |
5113 | |
5114 | do_cleanups (old_chain); | |
5115 | } | |
5116 | if (mismatched > 0) | |
5117 | warning ("One or more sections of the remote executable does not match\n\ | |
5118 | the loaded file\n"); | |
5119 | if (args && !matched) | |
5120 | printf_filtered ("No loaded section named '%s'.\n", args); | |
5121 | } | |
5122 | ||
5123 | static int | |
fba45db2 | 5124 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c | 5125 | { |
d01949b6 | 5126 | struct remote_state *rs = get_remote_state (); |
c906108c | 5127 | int i; |
d01949b6 | 5128 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 5129 | char *p2 = &buf2[0]; |
c906108c | 5130 | |
c5aa993b | 5131 | if (!bufsiz) |
c906108c SS |
5132 | error ("null pointer to remote bufer size specified"); |
5133 | ||
d01949b6 | 5134 | /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let |
c906108c SS |
5135 | the caller know and return what the minimum size is */ |
5136 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
d01949b6 | 5137 | if (*bufsiz < (rs->remote_packet_size)) |
c906108c | 5138 | { |
d01949b6 | 5139 | *bufsiz = (rs->remote_packet_size); |
c906108c SS |
5140 | return -1; |
5141 | } | |
5142 | ||
5143 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 5144 | if (!remote_desc) |
c906108c SS |
5145 | error ("remote query is only available after target open"); |
5146 | ||
5147 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 5148 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
5149 | error ("invalid remote query type"); |
5150 | ||
c5aa993b | 5151 | if (!buf) |
c906108c SS |
5152 | error ("null remote query specified"); |
5153 | ||
c5aa993b | 5154 | if (!outbuf) |
c906108c SS |
5155 | error ("remote query requires a buffer to receive data"); |
5156 | ||
5157 | outbuf[0] = '\0'; | |
5158 | ||
5159 | *p2++ = 'q'; | |
5160 | *p2++ = query_type; | |
5161 | ||
5162 | /* we used one buffer char for the remote protocol q command and another | |
5163 | for the query type. As the remote protocol encapsulation uses 4 chars | |
5164 | plus one extra in case we are debugging (remote_debug), | |
5165 | we have PBUFZIZ - 7 left to pack the query string */ | |
5166 | i = 0; | |
d01949b6 | 5167 | while (buf[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c SS |
5168 | { |
5169 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
5170 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
5171 | error ("illegal characters in query string"); | |
c906108c SS |
5172 | |
5173 | *p2++ = buf[i]; | |
5174 | i++; | |
5175 | } | |
5176 | *p2 = buf[i]; | |
5177 | ||
c5aa993b | 5178 | if (buf[i]) |
c906108c SS |
5179 | error ("query larger than available buffer"); |
5180 | ||
5181 | i = putpkt (buf2); | |
c5aa993b JM |
5182 | if (i < 0) |
5183 | return i; | |
c906108c | 5184 | |
c2d11a7d | 5185 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
5186 | |
5187 | return 0; | |
5188 | } | |
5189 | ||
96baa820 JM |
5190 | static void |
5191 | remote_rcmd (char *command, | |
d9fcf2fb | 5192 | struct ui_file *outbuf) |
96baa820 | 5193 | { |
d01949b6 | 5194 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5195 | int i; |
d01949b6 | 5196 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5197 | char *p = buf; |
5198 | ||
5199 | if (!remote_desc) | |
5200 | error ("remote rcmd is only available after target open"); | |
5201 | ||
7be570e7 JM |
5202 | /* Send a NULL command across as an empty command */ |
5203 | if (command == NULL) | |
5204 | command = ""; | |
5205 | ||
96baa820 JM |
5206 | /* The query prefix */ |
5207 | strcpy (buf, "qRcmd,"); | |
5208 | p = strchr (buf, '\0'); | |
5209 | ||
d01949b6 | 5210 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5211 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5212 | ||
5213 | /* Encode the actual command */ | |
30559e10 | 5214 | bin2hex (command, p, 0); |
96baa820 JM |
5215 | |
5216 | if (putpkt (buf) < 0) | |
5217 | error ("Communication problem with target\n"); | |
5218 | ||
5219 | /* get/display the response */ | |
5220 | while (1) | |
5221 | { | |
5222 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
5223 | buf[0] = '\0'; | |
d01949b6 | 5224 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5225 | if (buf[0] == '\0') |
5226 | error ("Target does not support this command\n"); | |
5227 | if (buf[0] == 'O' && buf[1] != 'K') | |
5228 | { | |
5229 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
5230 | continue; | |
5231 | } | |
5232 | if (strcmp (buf, "OK") == 0) | |
5233 | break; | |
7be570e7 JM |
5234 | if (strlen (buf) == 3 && buf[0] == 'E' |
5235 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5236 | { | |
5237 | error ("Protocol error with Rcmd"); | |
5238 | } | |
96baa820 JM |
5239 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5240 | { | |
5241 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5242 | fputc_unfiltered (c, outbuf); | |
5243 | } | |
5244 | break; | |
5245 | } | |
5246 | } | |
5247 | ||
c906108c | 5248 | static void |
fba45db2 | 5249 | packet_command (char *args, int from_tty) |
c906108c | 5250 | { |
d01949b6 AC |
5251 | struct remote_state *rs = get_remote_state (); |
5252 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5253 | |
c5aa993b | 5254 | if (!remote_desc) |
c906108c SS |
5255 | error ("command can only be used with remote target"); |
5256 | ||
c5aa993b | 5257 | if (!args) |
c906108c SS |
5258 | error ("remote-packet command requires packet text as argument"); |
5259 | ||
5260 | puts_filtered ("sending: "); | |
5261 | print_packet (args); | |
5262 | puts_filtered ("\n"); | |
5263 | putpkt (args); | |
5264 | ||
d01949b6 | 5265 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5266 | puts_filtered ("received: "); |
5267 | print_packet (buf); | |
5268 | puts_filtered ("\n"); | |
5269 | } | |
5270 | ||
5271 | #if 0 | |
5272 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
5273 | ||
a14ed312 | 5274 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5275 | |
a14ed312 | 5276 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5277 | |
a14ed312 | 5278 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5279 | |
a14ed312 | 5280 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5281 | |
a14ed312 | 5282 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 5283 | |
a14ed312 | 5284 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5285 | |
a14ed312 | 5286 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5287 | |
a14ed312 | 5288 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5289 | |
a14ed312 | 5290 | static void init_remote_threadtests (void); |
c906108c | 5291 | |
c5aa993b | 5292 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5293 | |
5294 | static void | |
fba45db2 | 5295 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5296 | { |
5297 | int sample_thread = SAMPLE_THREAD; | |
5298 | ||
5299 | printf_filtered ("Remote threadset test\n"); | |
5300 | set_thread (sample_thread, 1); | |
5301 | } | |
5302 | ||
5303 | ||
5304 | static void | |
fba45db2 | 5305 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5306 | { |
5307 | int sample_thread = SAMPLE_THREAD; | |
5308 | ||
39f77062 | 5309 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5310 | printf_filtered ("PASS: Thread alive test\n"); |
5311 | else | |
5312 | printf_filtered ("FAIL: Thread alive test\n"); | |
5313 | } | |
5314 | ||
a14ed312 | 5315 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5316 | |
5317 | void | |
fba45db2 | 5318 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5319 | { |
5320 | char hexid[20]; | |
5321 | ||
5322 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5323 | hexid[16] = 0; | |
5324 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5325 | } | |
5326 | ||
5327 | static void | |
fba45db2 | 5328 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5329 | { |
5330 | int startflag = 1; | |
5331 | threadref nextthread; | |
5332 | int done, result_count; | |
5333 | threadref threadlist[3]; | |
5334 | ||
5335 | printf_filtered ("Remote Threadlist test\n"); | |
5336 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5337 | &result_count, &threadlist[0])) | |
5338 | printf_filtered ("FAIL: threadlist test\n"); | |
5339 | else | |
5340 | { | |
5341 | threadref *scan = threadlist; | |
5342 | threadref *limit = scan + result_count; | |
5343 | ||
5344 | while (scan < limit) | |
5345 | output_threadid (" thread ", scan++); | |
5346 | } | |
5347 | } | |
5348 | ||
5349 | void | |
fba45db2 | 5350 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5351 | { |
5352 | output_threadid ("Threadid: ", &info->threadid); | |
5353 | printf_filtered ("Name: %s\n ", info->shortname); | |
5354 | printf_filtered ("State: %s\n", info->display); | |
5355 | printf_filtered ("other: %s\n\n", info->more_display); | |
5356 | } | |
5357 | ||
5358 | int | |
fba45db2 | 5359 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5360 | { |
5361 | int result; | |
5362 | int set; | |
5363 | struct gdb_ext_thread_info threadinfo; | |
5364 | ||
5365 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5366 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5367 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5368 | display_thread_info (&threadinfo); | |
5369 | return result; | |
5370 | } | |
5371 | ||
5372 | static void | |
fba45db2 | 5373 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5374 | { |
5375 | int athread = SAMPLE_THREAD; | |
5376 | threadref thread; | |
5377 | int set; | |
5378 | ||
5379 | int_to_threadref (&thread, athread); | |
5380 | printf_filtered ("Remote Threadinfo test\n"); | |
5381 | if (!get_and_display_threadinfo (&thread)) | |
5382 | printf_filtered ("FAIL cannot get thread info\n"); | |
5383 | } | |
5384 | ||
5385 | static int | |
fba45db2 | 5386 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5387 | { |
5388 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5389 | return get_and_display_threadinfo (ref); | |
5390 | } | |
5391 | ||
5392 | static void | |
fba45db2 | 5393 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5394 | { |
5395 | printf_filtered ("Remote Threadlist update test\n"); | |
5396 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5397 | } | |
5398 | ||
5399 | static void | |
5400 | init_remote_threadtests (void) | |
5401 | { | |
5402 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5403 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5404 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5405 | "Fetch and display info about one thread"); | |
5406 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5407 | "Test setting to a different thread"); | |
5408 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5409 | "Iterate through updating all remote thread info"); | |
5410 | add_com ("talive", class_obscure, threadalive_test, | |
5411 | " Remote thread alive test "); | |
5412 | } | |
5413 | ||
5414 | #endif /* 0 */ | |
5415 | ||
f3fb8c85 MS |
5416 | /* Convert a thread ID to a string. Returns the string in a static |
5417 | buffer. */ | |
5418 | ||
5419 | static char * | |
39f77062 | 5420 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5421 | { |
5422 | static char buf[30]; | |
5423 | ||
39f77062 | 5424 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5425 | return buf; |
5426 | } | |
5427 | ||
c906108c | 5428 | static void |
fba45db2 | 5429 | init_remote_ops (void) |
c906108c | 5430 | { |
c5aa993b | 5431 | remote_ops.to_shortname = "remote"; |
c906108c | 5432 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5433 | remote_ops.to_doc = |
c906108c | 5434 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5435 | Specify the serial device it is connected to\n\ |
5436 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5437 | remote_ops.to_open = remote_open; |
5438 | remote_ops.to_close = remote_close; | |
c906108c | 5439 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5440 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5441 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5442 | remote_ops.to_wait = remote_wait; |
5443 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5444 | remote_ops.to_store_registers = remote_store_registers; | |
5445 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5446 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5447 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5448 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5449 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5450 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5451 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5452 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5453 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5454 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5455 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5456 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5457 | remote_ops.to_kill = remote_kill; |
5458 | remote_ops.to_load = generic_load; | |
c906108c SS |
5459 | remote_ops.to_mourn_inferior = remote_mourn; |
5460 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5461 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5462 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5463 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c SS |
5464 | remote_ops.to_stop = remote_stop; |
5465 | remote_ops.to_query = remote_query; | |
96baa820 | 5466 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5467 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5468 | remote_ops.to_has_all_memory = 1; |
5469 | remote_ops.to_has_memory = 1; | |
5470 | remote_ops.to_has_stack = 1; | |
5471 | remote_ops.to_has_registers = 1; | |
5472 | remote_ops.to_has_execution = 1; | |
5473 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5474 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5475 | } |
5476 | ||
5477 | /* Set up the extended remote vector by making a copy of the standard | |
5478 | remote vector and adding to it. */ | |
5479 | ||
5480 | static void | |
fba45db2 | 5481 | init_extended_remote_ops (void) |
c906108c SS |
5482 | { |
5483 | extended_remote_ops = remote_ops; | |
5484 | ||
0f71a2f6 | 5485 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5486 | extended_remote_ops.to_longname = |
c906108c | 5487 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5488 | extended_remote_ops.to_doc = |
c906108c SS |
5489 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5490 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5491 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5492 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5493 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5494 | } |
5495 | ||
5496 | /* | |
5497 | * Command: info remote-process | |
5498 | * | |
5499 | * This implements Cisco's version of the "info proc" command. | |
5500 | * | |
5501 | * This query allows the target stub to return an arbitrary string | |
5502 | * (or strings) giving arbitrary information about the target process. | |
5503 | * This is optional; the target stub isn't required to implement it. | |
5504 | * | |
5505 | * Syntax: qfProcessInfo request first string | |
5506 | * qsProcessInfo request subsequent string | |
5507 | * reply: 'O'<hex-encoded-string> | |
5508 | * 'l' last reply (empty) | |
5509 | */ | |
5510 | ||
5511 | static void | |
c2d11a7d | 5512 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5513 | { |
d01949b6 AC |
5514 | struct remote_state *rs = get_remote_state (); |
5515 | char *buf = alloca (rs->remote_packet_size); | |
0f71a2f6 JM |
5516 | |
5517 | if (remote_desc == 0) | |
5518 | error ("Command can only be used when connected to the remote target."); | |
5519 | ||
5520 | putpkt ("qfProcessInfo"); | |
d01949b6 | 5521 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 | 5522 | if (buf[0] == 0) |
c5aa993b | 5523 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5524 | |
5525 | if (buf[0] == 'E') | |
5526 | error ("info proc: target error."); | |
5527 | ||
c5aa993b | 5528 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5529 | { |
5530 | remote_console_output (&buf[1]); | |
5531 | putpkt ("qsProcessInfo"); | |
d01949b6 | 5532 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 JM |
5533 | } |
5534 | } | |
5535 | ||
5536 | /* | |
5537 | * Target Cisco | |
5538 | */ | |
5539 | ||
5540 | static void | |
c2d11a7d | 5541 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 | 5542 | { |
36918e70 | 5543 | int ex; |
0f71a2f6 | 5544 | if (name == 0) |
22e04375 AC |
5545 | error ("To open a remote debug connection, you need to specify what \n" |
5546 | "device is attached to the remote system (e.g. host:port)."); | |
0f71a2f6 | 5547 | |
6426a772 JM |
5548 | /* See FIXME above */ |
5549 | wait_forever_enabled_p = 1; | |
5550 | ||
0f71a2f6 JM |
5551 | target_preopen (from_tty); |
5552 | ||
5553 | unpush_target (&remote_cisco_ops); | |
5554 | ||
9db8d71f | 5555 | remote_desc = remote_serial_open (name); |
0f71a2f6 JM |
5556 | if (!remote_desc) |
5557 | perror_with_name (name); | |
5558 | ||
5559 | /* | |
5560 | * If a baud rate was specified on the gdb command line it will | |
5561 | * be greater than the initial value of -1. If it is, use it otherwise | |
5562 | * default to 9600 | |
5563 | */ | |
5564 | ||
5565 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
2cd58942 | 5566 | if (serial_setbaudrate (remote_desc, baud_rate)) |
0f71a2f6 | 5567 | { |
2cd58942 | 5568 | serial_close (remote_desc); |
0f71a2f6 JM |
5569 | perror_with_name (name); |
5570 | } | |
5571 | ||
2cd58942 | 5572 | serial_raw (remote_desc); |
0f71a2f6 JM |
5573 | |
5574 | /* If there is something sitting in the buffer we might take it as a | |
5575 | response to a command, which would be bad. */ | |
2cd58942 | 5576 | serial_flush_input (remote_desc); |
0f71a2f6 JM |
5577 | |
5578 | if (from_tty) | |
5579 | { | |
5580 | puts_filtered ("Remote debugging using "); | |
5581 | puts_filtered (name); | |
5582 | puts_filtered ("\n"); | |
5583 | } | |
5584 | ||
5585 | remote_cisco_mode = 1; | |
5586 | ||
5587 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5588 | ||
d471ea57 | 5589 | init_all_packet_configs (); |
0f71a2f6 | 5590 | |
c5aa993b | 5591 | general_thread = -2; |
0f71a2f6 JM |
5592 | continue_thread = -2; |
5593 | ||
9d1f7ab2 MS |
5594 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5595 | use_threadinfo_query = 1; | |
5596 | use_threadextra_query = 1; | |
5597 | ||
0f71a2f6 JM |
5598 | /* Without this, some commands which require an active target (such |
5599 | as kill) won't work. This variable serves (at least) double duty | |
5600 | as both the pid of the target process (if it has such), and as a | |
5601 | flag indicating that a target is active. These functions should | |
5602 | be split out into seperate variables, especially since GDB will | |
5603 | someday have a notion of debugging several processes. */ | |
39f77062 | 5604 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
0f71a2f6 | 5605 | |
36918e70 | 5606 | /* Start the remote connection; if error, discard this target. See |
165b8e33 AC |
5607 | the comments in remote_open_1() for further details such as the |
5608 | need to re-throw the exception. */ | |
36918e70 AC |
5609 | ex = catch_exceptions (uiout, |
5610 | remote_start_remote_dummy, NULL, | |
5611 | "Couldn't establish connection to remote" | |
5612 | " target\n", | |
5613 | RETURN_MASK_ALL); | |
5614 | if (ex < 0) | |
0f71a2f6 JM |
5615 | { |
5616 | pop_target (); | |
165b8e33 | 5617 | throw_exception (ex); |
0f71a2f6 JM |
5618 | } |
5619 | } | |
5620 | ||
5621 | static void | |
c2d11a7d | 5622 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5623 | { |
5624 | remote_cisco_mode = 0; | |
5625 | remote_close (quitting); | |
5626 | } | |
5627 | ||
c5aa993b | 5628 | static void |
8ab86381 | 5629 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5630 | { |
5631 | remote_mourn_1 (&remote_cisco_ops); | |
5632 | } | |
5633 | ||
c5aa993b JM |
5634 | enum |
5635 | { | |
5636 | READ_MORE, | |
5637 | FATAL_ERROR, | |
5638 | ENTER_DEBUG, | |
0f71a2f6 | 5639 | DISCONNECT_TELNET |
c5aa993b JM |
5640 | } |
5641 | minitelnet_return; | |
0f71a2f6 | 5642 | |
1ff9c3d6 AC |
5643 | /* Shared between readsocket() and readtty(). The size is arbitrary, |
5644 | however all targets are known to support a 400 character packet. */ | |
5645 | static char tty_input[400]; | |
0f71a2f6 JM |
5646 | |
5647 | static int escape_count; | |
5648 | static int echo_check; | |
5649 | extern int quit_flag; | |
5650 | ||
5651 | static int | |
c2d11a7d | 5652 | readsocket (void) |
0f71a2f6 JM |
5653 | { |
5654 | int data; | |
5655 | ||
5656 | /* Loop until the socket doesn't have any more data */ | |
5657 | ||
c5aa993b | 5658 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5659 | { |
5660 | /* Check for the escape sequence */ | |
c5aa993b | 5661 | if (data == '|') |
0f71a2f6 JM |
5662 | { |
5663 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5664 | if (++escape_count == 4) |
0f71a2f6 JM |
5665 | { |
5666 | return ENTER_DEBUG; | |
5667 | } | |
c5aa993b JM |
5668 | else |
5669 | { /* This is a '|', but not the fourth in a row. | |
5670 | Continue without echoing it. If it isn't actually | |
5671 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5672 | continue; |
5673 | } | |
5674 | } | |
c5aa993b JM |
5675 | else |
5676 | /* Not a '|' */ | |
5677 | { | |
0f71a2f6 JM |
5678 | /* Ensure any pending '|'s are flushed. */ |
5679 | ||
c5aa993b JM |
5680 | for (; escape_count > 0; escape_count--) |
5681 | putchar ('|'); | |
0f71a2f6 | 5682 | } |
0f71a2f6 | 5683 | |
c5aa993b JM |
5684 | if (data == '\r') /* If this is a return character, */ |
5685 | continue; /* - just supress it. */ | |
5686 | ||
5687 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5688 | { |
5689 | if (tty_input[echo_check] == data) | |
5690 | { | |
1ff9c3d6 | 5691 | gdb_assert (echo_check <= sizeof (tty_input)); |
c5aa993b JM |
5692 | echo_check++; /* Character matched user input: */ |
5693 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5694 | } |
c5aa993b JM |
5695 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5696 | { /* End of the line (and of echo checking). */ | |
5697 | echo_check = -1; /* No more echo supression */ | |
5698 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5699 | } |
5700 | else | |
c5aa993b JM |
5701 | { /* Failed check for echo of user input. |
5702 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5703 | int j; |
5704 | ||
c5aa993b | 5705 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5706 | putchar (tty_input[j]); |
5707 | echo_check = -1; | |
5708 | } | |
5709 | } | |
c5aa993b | 5710 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5711 | } |
5712 | ||
c5aa993b JM |
5713 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5714 | return READ_MORE; /* Try to read some more */ | |
5715 | else | |
5716 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5717 | } |
5718 | ||
5719 | static int | |
c2d11a7d | 5720 | readtty (void) |
0f71a2f6 | 5721 | { |
0f71a2f6 JM |
5722 | int tty_bytecount; |
5723 | ||
5724 | /* First, read a buffer full from the terminal */ | |
5725 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5726 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5727 | { |
5728 | perror ("readtty: read failed"); | |
5729 | return FATAL_ERROR; | |
5730 | } | |
5731 | ||
5732 | /* Remove a quoted newline. */ | |
5733 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5734 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5735 | { | |
c5aa993b JM |
5736 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5737 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5738 | } |
5739 | ||
5740 | /* Turn trailing newlines into returns */ | |
5741 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5742 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5743 | |
5744 | /* If the line consists of a ~, enter debugging mode. */ | |
5745 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5746 | return ENTER_DEBUG; | |
5747 | ||
5748 | /* Make this a zero terminated string and write it out */ | |
5749 | tty_input[tty_bytecount] = 0; | |
2cd58942 | 5750 | if (serial_write (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5751 | { |
5752 | perror_with_name ("readtty: write failed"); | |
5753 | return FATAL_ERROR; | |
5754 | } | |
5755 | ||
5756 | return READ_MORE; | |
5757 | } | |
5758 | ||
5759 | static int | |
c2d11a7d | 5760 | minitelnet (void) |
0f71a2f6 JM |
5761 | { |
5762 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5763 | int tablesize; /* max number of FDs for select */ |
5764 | int status; | |
5765 | int quit_count = 0; | |
0f71a2f6 | 5766 | |
0f71a2f6 | 5767 | escape_count = 0; |
c5aa993b | 5768 | echo_check = -1; |
0f71a2f6 JM |
5769 | |
5770 | tablesize = 8 * sizeof (input); | |
5771 | ||
c5aa993b | 5772 | for (;;) |
0f71a2f6 JM |
5773 | { |
5774 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5775 | this must be done *before* the select as there may be |
5776 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5777 | |
c5aa993b | 5778 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5779 | { |
5780 | error ("Debugging terminated by communications error"); | |
5781 | } | |
c5aa993b | 5782 | else if (status != READ_MORE) |
0f71a2f6 JM |
5783 | { |
5784 | return (status); | |
5785 | } | |
5786 | ||
c5aa993b | 5787 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5788 | |
5789 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5790 | |
0f71a2f6 | 5791 | FD_ZERO (&input); |
c5aa993b | 5792 | FD_SET (fileno (stdin), &input); |
2cd58942 | 5793 | FD_SET (deprecated_serial_fd (remote_desc), &input); |
0f71a2f6 JM |
5794 | |
5795 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5796 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5797 | { |
5798 | error ("Communications error on select %d", errno); | |
5799 | } | |
5800 | ||
5801 | /* Handle Control-C typed */ | |
5802 | ||
c5aa993b | 5803 | if (quit_flag) |
0f71a2f6 JM |
5804 | { |
5805 | if ((++quit_count) == 2) | |
5806 | { | |
5807 | if (query ("Interrupt GDB? ")) | |
5808 | { | |
5809 | printf_filtered ("Interrupted by user.\n"); | |
b5a2688f | 5810 | throw_exception (RETURN_QUIT); |
0f71a2f6 JM |
5811 | } |
5812 | quit_count = 0; | |
5813 | } | |
5814 | quit_flag = 0; | |
5815 | ||
5816 | if (remote_break) | |
2cd58942 | 5817 | serial_send_break (remote_desc); |
0f71a2f6 | 5818 | else |
2cd58942 | 5819 | serial_write (remote_desc, "\003", 1); |
0f71a2f6 JM |
5820 | |
5821 | continue; | |
5822 | } | |
5823 | ||
5824 | /* Handle console input */ | |
5825 | ||
c5aa993b | 5826 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5827 | { |
5828 | quit_count = 0; | |
5829 | echo_check = 0; | |
5830 | status = readtty (); | |
5831 | if (status == READ_MORE) | |
5832 | continue; | |
5833 | ||
5834 | return status; /* telnet session ended */ | |
5835 | } | |
5836 | } | |
5837 | } | |
5838 | ||
39f77062 KB |
5839 | static ptid_t |
5840 | remote_cisco_wait (ptid_t ptid, struct target_waitstatus *status) | |
0f71a2f6 | 5841 | { |
c5aa993b | 5842 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5843 | { |
5844 | error ("Debugging session terminated by protocol error"); | |
5845 | } | |
5846 | putpkt ("?"); | |
39f77062 | 5847 | return remote_wait (ptid, status); |
0f71a2f6 JM |
5848 | } |
5849 | ||
5850 | static void | |
fba45db2 | 5851 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5852 | { |
5853 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5854 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5855 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5856 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5857 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5858 | remote_cisco_ops.to_open = remote_cisco_open; |
5859 | remote_cisco_ops.to_close = remote_cisco_close; | |
5860 | remote_cisco_ops.to_detach = remote_detach; | |
6ad8ae5c | 5861 | remote_cisco_ops.to_disconnect = remote_disconnect; |
c5aa993b JM |
5862 | remote_cisco_ops.to_resume = remote_resume; |
5863 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5864 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5865 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5866 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5867 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5868 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 | 5869 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
3c3bea1c GS |
5870 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; |
5871 | remote_cisco_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5872 | remote_cisco_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5873 | remote_cisco_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5874 | remote_cisco_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5875 | remote_cisco_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5876 | remote_cisco_ops.to_stopped_data_address = remote_stopped_data_address; | |
5877 | remote_cisco_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
c5aa993b JM |
5878 | remote_cisco_ops.to_kill = remote_kill; |
5879 | remote_cisco_ops.to_load = generic_load; | |
5880 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5881 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5882 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5883 | remote_cisco_ops.to_pid_to_str = remote_pid_to_str; |
5884 | remote_cisco_ops.to_extra_thread_info = remote_threads_extra_info; | |
c5aa993b JM |
5885 | remote_cisco_ops.to_stratum = process_stratum; |
5886 | remote_cisco_ops.to_has_all_memory = 1; | |
5887 | remote_cisco_ops.to_has_memory = 1; | |
5888 | remote_cisco_ops.to_has_stack = 1; | |
5889 | remote_cisco_ops.to_has_registers = 1; | |
5890 | remote_cisco_ops.to_has_execution = 1; | |
5891 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5892 | } |
5893 | ||
6426a772 JM |
5894 | static int |
5895 | remote_can_async_p (void) | |
5896 | { | |
5897 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5898 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5899 | } |
5900 | ||
5901 | static int | |
5902 | remote_is_async_p (void) | |
5903 | { | |
5904 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5905 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5906 | } |
5907 | ||
2acceee2 JM |
5908 | /* Pass the SERIAL event on and up to the client. One day this code |
5909 | will be able to delay notifying the client of an event until the | |
5910 | point where an entire packet has been received. */ | |
5911 | ||
5912 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5913 | static void *async_client_context; | |
5914 | static serial_event_ftype remote_async_serial_handler; | |
5915 | ||
6426a772 | 5916 | static void |
819cc324 | 5917 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5918 | { |
2acceee2 JM |
5919 | /* Don't propogate error information up to the client. Instead let |
5920 | the client find out about the error by querying the target. */ | |
5921 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5922 | } | |
5923 | ||
5924 | static void | |
5925 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5926 | { | |
ed9a39eb | 5927 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5928 | internal_error (__FILE__, __LINE__, |
5929 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5930 | |
2acceee2 JM |
5931 | if (callback != NULL) |
5932 | { | |
2cd58942 | 5933 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5934 | async_client_callback = callback; |
5935 | async_client_context = context; | |
5936 | } | |
5937 | else | |
2cd58942 | 5938 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5939 | } |
5940 | ||
43ff13b4 JM |
5941 | /* Target async and target extended-async. |
5942 | ||
5943 | This are temporary targets, until it is all tested. Eventually | |
5944 | async support will be incorporated int the usual 'remote' | |
5945 | target. */ | |
5946 | ||
5947 | static void | |
c2d11a7d | 5948 | init_remote_async_ops (void) |
43ff13b4 JM |
5949 | { |
5950 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5951 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5952 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5953 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5954 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5955 | remote_async_ops.to_open = remote_async_open; |
5956 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5957 | remote_async_ops.to_detach = remote_detach; |
5958 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5959 | remote_async_ops.to_resume = remote_async_resume; |
5960 | remote_async_ops.to_wait = remote_async_wait; | |
5961 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5962 | remote_async_ops.to_store_registers = remote_store_registers; | |
5963 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5964 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5965 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5966 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5967 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5968 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5969 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5970 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5971 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5972 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5973 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5974 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5975 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5976 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5977 | remote_async_ops.to_kill = remote_async_kill; |
5978 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5979 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5980 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5981 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5982 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5983 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 JM |
5984 | remote_async_ops.to_stop = remote_stop; |
5985 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5986 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5987 | remote_async_ops.to_stratum = process_stratum; |
5988 | remote_async_ops.to_has_all_memory = 1; | |
5989 | remote_async_ops.to_has_memory = 1; | |
5990 | remote_async_ops.to_has_stack = 1; | |
5991 | remote_async_ops.to_has_registers = 1; | |
5992 | remote_async_ops.to_has_execution = 1; | |
5993 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5994 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5995 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5996 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5997 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5998 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5999 | } |
6000 | ||
6001 | /* Set up the async extended remote vector by making a copy of the standard | |
6002 | remote vector and adding to it. */ | |
6003 | ||
6004 | static void | |
c2d11a7d | 6005 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
6006 | { |
6007 | extended_async_remote_ops = remote_async_ops; | |
6008 | ||
6009 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 6010 | extended_async_remote_ops.to_longname = |
43ff13b4 | 6011 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 6012 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
6013 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
6014 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6015 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
6016 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6017 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6018 | } | |
6019 | ||
5a2468f5 | 6020 | static void |
c2d11a7d | 6021 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6022 | { |
5a2468f5 JM |
6023 | } |
6024 | ||
d471ea57 AC |
6025 | static void |
6026 | show_remote_cmd (char *args, int from_tty) | |
6027 | { | |
e9e68a56 AC |
6028 | /* FIXME: cagney/2002-06-15: This function should iterate over |
6029 | remote_show_cmdlist for a list of sub commands to show. */ | |
6030 | show_remote_protocol_Z_packet_cmd (args, from_tty, NULL); | |
6031 | show_remote_protocol_e_packet_cmd (args, from_tty, NULL); | |
6032 | show_remote_protocol_E_packet_cmd (args, from_tty, NULL); | |
6033 | show_remote_protocol_P_packet_cmd (args, from_tty, NULL); | |
6034 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL); | |
6035 | show_remote_protocol_binary_download_cmd (args, from_tty, NULL); | |
d471ea57 | 6036 | } |
5a2468f5 | 6037 | |
0f71a2f6 | 6038 | static void |
fba45db2 | 6039 | build_remote_gdbarch_data (void) |
0f71a2f6 | 6040 | { |
d696208f | 6041 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
6042 | } |
6043 | ||
dc8acb97 MS |
6044 | /* Saved pointer to previous owner of the new_objfile event. */ |
6045 | static void (*remote_new_objfile_chain) (struct objfile *); | |
6046 | ||
6047 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
6048 | static void | |
6049 | remote_new_objfile (struct objfile *objfile) | |
6050 | { | |
6051 | if (remote_desc != 0) /* Have a remote connection */ | |
6052 | { | |
6053 | remote_check_symbols (objfile); | |
6054 | } | |
6055 | /* Call predecessor on chain, if any. */ | |
6056 | if (remote_new_objfile_chain != 0 && | |
6057 | remote_desc == 0) | |
6058 | remote_new_objfile_chain (objfile); | |
6059 | } | |
6060 | ||
c906108c | 6061 | void |
fba45db2 | 6062 | _initialize_remote (void) |
c906108c | 6063 | { |
5a2468f5 JM |
6064 | static struct cmd_list_element *remote_set_cmdlist; |
6065 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 6066 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 6067 | |
0f71a2f6 | 6068 | /* architecture specific data */ |
d01949b6 AC |
6069 | remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state, |
6070 | free_remote_state); | |
6071 | ||
6072 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
6073 | that the remote protocol has been initialized. */ | |
11cf8741 JM |
6074 | register_gdbarch_swap (&remote_address_size, |
6075 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
6076 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
6077 | ||
c906108c SS |
6078 | init_remote_ops (); |
6079 | add_target (&remote_ops); | |
6080 | ||
6081 | init_extended_remote_ops (); | |
6082 | add_target (&extended_remote_ops); | |
cce74817 | 6083 | |
43ff13b4 JM |
6084 | init_remote_async_ops (); |
6085 | add_target (&remote_async_ops); | |
6086 | ||
6087 | init_extended_async_remote_ops (); | |
6088 | add_target (&extended_async_remote_ops); | |
6089 | ||
0f71a2f6 JM |
6090 | init_remote_cisco_ops (); |
6091 | add_target (&remote_cisco_ops); | |
6092 | ||
dc8acb97 MS |
6093 | /* Hook into new objfile notification. */ |
6094 | remote_new_objfile_chain = target_new_objfile_hook; | |
6095 | target_new_objfile_hook = remote_new_objfile; | |
6096 | ||
c906108c SS |
6097 | #if 0 |
6098 | init_remote_threadtests (); | |
6099 | #endif | |
6100 | ||
d471ea57 AC |
6101 | /* set/show remote ... */ |
6102 | ||
5a2468f5 JM |
6103 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
6104 | Remote protocol specific variables\n\ | |
6105 | Configure various remote-protocol specific variables such as\n\ | |
6106 | the packets being used", | |
cff3e48b | 6107 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 6108 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 6109 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
6110 | Remote protocol specific variables\n\ |
6111 | Configure various remote-protocol specific variables such as\n\ | |
6112 | the packets being used", | |
cff3e48b | 6113 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
6114 | 0/*allow-unknown*/, &showlist); |
6115 | ||
c5aa993b | 6116 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 6117 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 6118 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
6119 | &cmdlist); |
6120 | ||
6121 | add_cmd ("packet", class_maintenance, packet_command, | |
6122 | "Send an arbitrary packet to a remote target.\n\ | |
6123 | maintenance packet TEXT\n\ | |
6124 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6125 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6126 | response packet. GDB supplies the initial `$' character, and the\n\ | |
6127 | terminating `#' character and checksum.", | |
6128 | &maintenancelist); | |
6129 | ||
e707bbc2 AC |
6130 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, |
6131 | "Set whether to send break if interrupted.\n", | |
6132 | "Show whether to send break if interrupted.\n", | |
6133 | NULL, NULL, | |
6134 | &setlist, &showlist); | |
c906108c | 6135 | |
11cf8741 JM |
6136 | /* Install commands for configuring memory read/write packets. */ |
6137 | ||
6138 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
6139 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
6140 | &setlist); | |
4ad5b0f7 | 6141 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
6142 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
6143 | &showlist); | |
6144 | add_cmd ("memory-write-packet-size", no_class, | |
6145 | set_memory_write_packet_size, | |
6146 | "Set the maximum number of bytes per memory-write packet.\n" | |
6147 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6148 | "default packet size. The actual limit is further reduced\n" | |
6149 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6150 | "further restriction and ``limit'' to enable that restriction\n", | |
6151 | &remote_set_cmdlist); | |
6152 | add_cmd ("memory-read-packet-size", no_class, | |
6153 | set_memory_read_packet_size, | |
6154 | "Set the maximum number of bytes per memory-read packet.\n" | |
6155 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6156 | "default packet size. The actual limit is further reduced\n" | |
6157 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6158 | "further restriction and ``limit'' to enable that restriction\n", | |
6159 | &remote_set_cmdlist); | |
6160 | add_cmd ("memory-write-packet-size", no_class, | |
6161 | show_memory_write_packet_size, | |
6162 | "Show the maximum number of bytes per memory-write packet.\n", | |
6163 | &remote_show_cmdlist); | |
6164 | add_cmd ("memory-read-packet-size", no_class, | |
6165 | show_memory_read_packet_size, | |
6166 | "Show the maximum number of bytes per memory-read packet.\n", | |
6167 | &remote_show_cmdlist); | |
c906108c | 6168 | |
501eef12 AC |
6169 | add_setshow_cmd ("hardware-watchpoint-limit", no_class, |
6170 | var_zinteger, &remote_hw_watchpoint_limit, "\ | |
6171 | Set the maximum number of target hardware watchpoints.\n\ | |
6172 | Specify a negative limit for unlimited.", "\ | |
6173 | Show the maximum number of target hardware watchpoints.\n", | |
6174 | NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist); | |
6175 | add_setshow_cmd ("hardware-breakpoint-limit", no_class, | |
6176 | var_zinteger, &remote_hw_breakpoint_limit, "\ | |
6177 | Set the maximum number of target hardware breakpoints.\n\ | |
6178 | Specify a negative limit for unlimited.", "\ | |
6179 | Show the maximum number of target hardware breakpoints.\n", | |
6180 | NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist); | |
6181 | ||
c5aa993b | 6182 | add_show_from_set |
c906108c | 6183 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 6184 | var_integer, (char *) &remote_address_size, |
c906108c SS |
6185 | "Set the maximum size of the address (in bits) \ |
6186 | in a memory packet.\n", | |
6187 | &setlist), | |
c5aa993b | 6188 | &showlist); |
c906108c | 6189 | |
96baa820 JM |
6190 | add_packet_config_cmd (&remote_protocol_binary_download, |
6191 | "X", "binary-download", | |
6192 | set_remote_protocol_binary_download_cmd, | |
6193 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
6194 | &remote_set_cmdlist, &remote_show_cmdlist, |
6195 | 1); | |
96baa820 JM |
6196 | #if 0 |
6197 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
6198 | compatibility. */ | |
c5aa993b | 6199 | add_show_from_set |
b83266a0 SS |
6200 | (add_set_cmd ("remotebinarydownload", no_class, |
6201 | var_boolean, (char *) &remote_binary_download, | |
6202 | "Set binary downloads.\n", &setlist), | |
6203 | &showlist); | |
96baa820 | 6204 | #endif |
0f71a2f6 JM |
6205 | |
6206 | add_info ("remote-process", remote_info_process, | |
6207 | "Query the remote system for process info."); | |
6208 | ||
dc8acb97 MS |
6209 | add_packet_config_cmd (&remote_protocol_qSymbol, |
6210 | "qSymbol", "symbol-lookup", | |
6211 | set_remote_protocol_qSymbol_packet_cmd, | |
6212 | show_remote_protocol_qSymbol_packet_cmd, | |
6213 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6214 | 0); | |
6215 | ||
44eaed12 C |
6216 | add_packet_config_cmd (&remote_protocol_e, |
6217 | "e", "step-over-range", | |
6218 | set_remote_protocol_e_packet_cmd, | |
6219 | show_remote_protocol_e_packet_cmd, | |
6220 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6221 | 0); | |
0f017ab9 AC |
6222 | /* Disable by default. The ``e'' packet has nasty interactions with |
6223 | the threading code - it relies on global state. */ | |
7f19b9a2 | 6224 | remote_protocol_e.detect = AUTO_BOOLEAN_FALSE; |
0f017ab9 | 6225 | update_packet_config (&remote_protocol_e); |
44eaed12 C |
6226 | |
6227 | add_packet_config_cmd (&remote_protocol_E, | |
6228 | "E", "step-over-range-w-signal", | |
6229 | set_remote_protocol_E_packet_cmd, | |
6230 | show_remote_protocol_E_packet_cmd, | |
6231 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6232 | 0); | |
0f017ab9 AC |
6233 | /* Disable by default. The ``e'' packet has nasty interactions with |
6234 | the threading code - it relies on global state. */ | |
7f19b9a2 | 6235 | remote_protocol_E.detect = AUTO_BOOLEAN_FALSE; |
0f017ab9 | 6236 | update_packet_config (&remote_protocol_E); |
44eaed12 | 6237 | |
d471ea57 AC |
6238 | add_packet_config_cmd (&remote_protocol_P, |
6239 | "P", "set-register", | |
5a2468f5 JM |
6240 | set_remote_protocol_P_packet_cmd, |
6241 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
6242 | &remote_set_cmdlist, &remote_show_cmdlist, |
6243 | 1); | |
6244 | ||
6245 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
6246 | "Z0", "software-breakpoint", | |
6247 | set_remote_protocol_Z_software_bp_packet_cmd, | |
6248 | show_remote_protocol_Z_software_bp_packet_cmd, | |
6249 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6250 | 0); | |
6251 | ||
6252 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
6253 | "Z1", "hardware-breakpoint", | |
6254 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
6255 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
6256 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6257 | 0); | |
6258 | ||
6259 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
6260 | "Z2", "write-watchpoint", | |
6261 | set_remote_protocol_Z_write_wp_packet_cmd, | |
6262 | show_remote_protocol_Z_write_wp_packet_cmd, | |
6263 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6264 | 0); | |
6265 | ||
6266 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
6267 | "Z3", "read-watchpoint", | |
6268 | set_remote_protocol_Z_read_wp_packet_cmd, | |
6269 | show_remote_protocol_Z_read_wp_packet_cmd, | |
6270 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6271 | 0); | |
6272 | ||
6273 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
6274 | "Z4", "access-watchpoint", | |
6275 | set_remote_protocol_Z_access_wp_packet_cmd, | |
6276 | show_remote_protocol_Z_access_wp_packet_cmd, | |
6277 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6278 | 0); | |
6279 | ||
6280 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
e9e68a56 AC |
6281 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
6282 | &remote_Z_packet_detect, "\ | |
6283 | Set use of remote protocol `Z' packets", | |
6284 | "Show use of remote protocol `Z' packets ", | |
6285 | set_remote_protocol_Z_packet_cmd, | |
6286 | show_remote_protocol_Z_packet_cmd, | |
6287 | &remote_set_cmdlist, &remote_show_cmdlist); | |
449092f6 CV |
6288 | |
6289 | /* Eventually initialize fileio. See fileio.c */ | |
6290 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 6291 | } |