File: | src/gnu/usr.bin/binutils/gdb/remote.c |
Warning: | line 1225, column 18 The result of the left shift is undefined because the left operand is negative |
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1 | /* Remote target communications for serial-line targets in custom GDB protocol | |||
2 | ||||
3 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, | |||
4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 | |||
5 | Free Software Foundation, Inc. | |||
6 | ||||
7 | This file is part of GDB. | |||
8 | ||||
9 | This program is free software; you can redistribute it and/or modify | |||
10 | it under the terms of the GNU General Public License as published by | |||
11 | the Free Software Foundation; either version 2 of the License, or | |||
12 | (at your option) any later version. | |||
13 | ||||
14 | This program is distributed in the hope that it will be useful, | |||
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |||
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |||
17 | GNU General Public License for more details. | |||
18 | ||||
19 | You should have received a copy of the GNU General Public License | |||
20 | along with this program; if not, write to the Free Software | |||
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |||
22 | Boston, MA 02111-1307, USA. */ | |||
23 | ||||
24 | /* See the GDB User Guide for details of the GDB remote protocol. */ | |||
25 | ||||
26 | #include "defs.h" | |||
27 | #include "gdb_string.h" | |||
28 | #include <ctype.h> | |||
29 | #include <fcntl.h> | |||
30 | #include "inferior.h" | |||
31 | #include "bfd.h" | |||
32 | #include "symfile.h" | |||
33 | #include "target.h" | |||
34 | /*#include "terminal.h" */ | |||
35 | #include "gdbcmd.h" | |||
36 | #include "objfiles.h" | |||
37 | #include "gdb-stabs.h" | |||
38 | #include "gdbthread.h" | |||
39 | #include "remote.h" | |||
40 | #include "regcache.h" | |||
41 | #include "value.h" | |||
42 | #include "gdb_assert.h" | |||
43 | ||||
44 | #include <ctype.h> | |||
45 | #include <sys/time.h> | |||
46 | ||||
47 | #include "event-loop.h" | |||
48 | #include "event-top.h" | |||
49 | #include "inf-loop.h" | |||
50 | ||||
51 | #include <signal.h> | |||
52 | #include "serial.h" | |||
53 | ||||
54 | #include "gdbcore.h" /* for exec_bfd */ | |||
55 | ||||
56 | #include "remote-fileio.h" | |||
57 | ||||
58 | /* Prototypes for local functions */ | |||
59 | static void cleanup_sigint_signal_handler (void *dummy); | |||
60 | static void initialize_sigint_signal_handler (void); | |||
61 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); | |||
62 | ||||
63 | static void handle_remote_sigint (int); | |||
64 | static void handle_remote_sigint_twice (int); | |||
65 | static void async_remote_interrupt (gdb_client_data); | |||
66 | void async_remote_interrupt_twice (gdb_client_data); | |||
67 | ||||
68 | static void build_remote_gdbarch_data (void); | |||
69 | ||||
70 | static void remote_files_info (struct target_ops *ignore); | |||
71 | ||||
72 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, | |||
73 | int len, int should_write, | |||
74 | struct mem_attrib *attrib, | |||
75 | struct target_ops *target); | |||
76 | ||||
77 | static void remote_prepare_to_store (void); | |||
78 | ||||
79 | static void remote_fetch_registers (int regno); | |||
80 | ||||
81 | static void remote_resume (ptid_t ptid, int step, | |||
82 | enum target_signal siggnal); | |||
83 | static void remote_async_resume (ptid_t ptid, int step, | |||
84 | enum target_signal siggnal); | |||
85 | static int remote_start_remote (struct ui_out *uiout, void *dummy); | |||
86 | ||||
87 | static void remote_open (char *name, int from_tty); | |||
88 | static void remote_async_open (char *name, int from_tty); | |||
89 | ||||
90 | static void extended_remote_open (char *name, int from_tty); | |||
91 | static void extended_remote_async_open (char *name, int from_tty); | |||
92 | ||||
93 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, | |||
94 | int async_p); | |||
95 | ||||
96 | static void remote_close (int quitting); | |||
97 | ||||
98 | static void remote_store_registers (int regno); | |||
99 | ||||
100 | static void remote_mourn (void); | |||
101 | static void remote_async_mourn (void); | |||
102 | ||||
103 | static void extended_remote_restart (void); | |||
104 | ||||
105 | static void extended_remote_mourn (void); | |||
106 | ||||
107 | static void remote_mourn_1 (struct target_ops *); | |||
108 | ||||
109 | static void remote_send (char *buf, long sizeof_buf); | |||
110 | ||||
111 | static int readchar (int timeout); | |||
112 | ||||
113 | static ptid_t remote_wait (ptid_t ptid, | |||
114 | struct target_waitstatus *status); | |||
115 | static ptid_t remote_async_wait (ptid_t ptid, | |||
116 | struct target_waitstatus *status); | |||
117 | ||||
118 | static void remote_kill (void); | |||
119 | static void remote_async_kill (void); | |||
120 | ||||
121 | static int tohex (int nib); | |||
122 | ||||
123 | static void remote_detach (char *args, int from_tty); | |||
124 | ||||
125 | static void remote_interrupt (int signo); | |||
126 | ||||
127 | static void remote_interrupt_twice (int signo); | |||
128 | ||||
129 | static void interrupt_query (void); | |||
130 | ||||
131 | static void set_thread (int, int); | |||
132 | ||||
133 | static int remote_thread_alive (ptid_t); | |||
134 | ||||
135 | static void get_offsets (void); | |||
136 | ||||
137 | static long read_frame (char *buf, long sizeof_buf); | |||
138 | ||||
139 | static int remote_insert_breakpoint (CORE_ADDR, char *); | |||
140 | ||||
141 | static int remote_remove_breakpoint (CORE_ADDR, char *); | |||
142 | ||||
143 | static int hexnumlen (ULONGESTunsigned long num); | |||
144 | ||||
145 | static void init_remote_ops (void); | |||
146 | ||||
147 | static void init_extended_remote_ops (void); | |||
148 | ||||
149 | static void remote_stop (void); | |||
150 | ||||
151 | static int ishex (int ch, int *val); | |||
152 | ||||
153 | static int stubhex (int ch); | |||
154 | ||||
155 | static int hexnumstr (char *, ULONGESTunsigned long); | |||
156 | ||||
157 | static int hexnumnstr (char *, ULONGESTunsigned long, int); | |||
158 | ||||
159 | static CORE_ADDR remote_address_masked (CORE_ADDR); | |||
160 | ||||
161 | static void print_packet (char *); | |||
162 | ||||
163 | static unsigned long crc32 (unsigned char *, int, unsigned int); | |||
164 | ||||
165 | static void compare_sections_command (char *, int); | |||
166 | ||||
167 | static void packet_command (char *, int); | |||
168 | ||||
169 | static int stub_unpack_int (char *buff, int fieldlength); | |||
170 | ||||
171 | static ptid_t remote_current_thread (ptid_t oldptid); | |||
172 | ||||
173 | static void remote_find_new_threads (void); | |||
174 | ||||
175 | static void record_currthread (int currthread); | |||
176 | ||||
177 | static int fromhex (int a); | |||
178 | ||||
179 | static int hex2bin (const char *hex, char *bin, int count); | |||
180 | ||||
181 | static int bin2hex (const char *bin, char *hex, int count); | |||
182 | ||||
183 | static int putpkt_binary (char *buf, int cnt); | |||
184 | ||||
185 | static void check_binary_download (CORE_ADDR addr); | |||
186 | ||||
187 | struct packet_config; | |||
188 | ||||
189 | static void show_packet_config_cmd (struct packet_config *config); | |||
190 | ||||
191 | static void update_packet_config (struct packet_config *config); | |||
192 | ||||
193 | void _initialize_remote (void); | |||
194 | ||||
195 | /* Description of the remote protocol. Strictly speaking, when the | |||
196 | target is open()ed, remote.c should create a per-target description | |||
197 | of the remote protocol using that target's architecture. | |||
198 | Unfortunately, the target stack doesn't include local state. For | |||
199 | the moment keep the information in the target's architecture | |||
200 | object. Sigh.. */ | |||
201 | ||||
202 | struct packet_reg | |||
203 | { | |||
204 | long offset; /* Offset into G packet. */ | |||
205 | long regnum; /* GDB's internal register number. */ | |||
206 | LONGESTlong pnum; /* Remote protocol register number. */ | |||
207 | int in_g_packet; /* Always part of G packet. */ | |||
208 | /* long size in bytes; == register_size (current_gdbarch, regnum); at present. */ | |||
209 | /* char *name; == REGISTER_NAME (regnum); at present. */ | |||
210 | }; | |||
211 | ||||
212 | struct remote_state | |||
213 | { | |||
214 | /* Description of the remote protocol registers. */ | |||
215 | long sizeof_g_packet; | |||
216 | ||||
217 | /* Description of the remote protocol registers indexed by REGNUM | |||
218 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |||
219 | struct packet_reg *regs; | |||
220 | ||||
221 | /* This is the size (in chars) of the first response to the ``g'' | |||
222 | packet. It is used as a heuristic when determining the maximum | |||
223 | size of memory-read and memory-write packets. A target will | |||
224 | typically only reserve a buffer large enough to hold the ``g'' | |||
225 | packet. The size does not include packet overhead (headers and | |||
226 | trailers). */ | |||
227 | long actual_register_packet_size; | |||
228 | ||||
229 | /* This is the maximum size (in chars) of a non read/write packet. | |||
230 | It is also used as a cap on the size of read/write packets. */ | |||
231 | long remote_packet_size; | |||
232 | }; | |||
233 | ||||
234 | ||||
235 | /* Handle for retreving the remote protocol data from gdbarch. */ | |||
236 | static struct gdbarch_data *remote_gdbarch_data_handle; | |||
237 | ||||
238 | static struct remote_state * | |||
239 | get_remote_state (void) | |||
240 | { | |||
241 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); | |||
242 | } | |||
243 | ||||
244 | static void * | |||
245 | init_remote_state (struct gdbarch *gdbarch) | |||
246 | { | |||
247 | int regnum; | |||
248 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state)((struct remote_state *) gdbarch_obstack_zalloc ((gdbarch), sizeof (struct remote_state))); | |||
249 | ||||
250 | if (deprecated_register_bytes () != 0) | |||
251 | rs->sizeof_g_packet = deprecated_register_bytes (); | |||
252 | else | |||
253 | rs->sizeof_g_packet = 0; | |||
254 | ||||
255 | /* Assume a 1:1 regnum<->pnum table. */ | |||
256 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS,((struct packet_reg *) gdbarch_obstack_zalloc ((gdbarch), ((gdbarch_num_regs (current_gdbarch)) + (gdbarch_num_pseudo_regs (current_gdbarch ))) * sizeof (struct packet_reg))) | |||
257 | struct packet_reg)((struct packet_reg *) gdbarch_obstack_zalloc ((gdbarch), ((gdbarch_num_regs (current_gdbarch)) + (gdbarch_num_pseudo_regs (current_gdbarch ))) * sizeof (struct packet_reg))); | |||
258 | for (regnum = 0; regnum < NUM_REGS(gdbarch_num_regs (current_gdbarch)) + NUM_PSEUDO_REGS(gdbarch_num_pseudo_regs (current_gdbarch)); regnum++) | |||
259 | { | |||
260 | struct packet_reg *r = &rs->regs[regnum]; | |||
261 | r->pnum = regnum; | |||
262 | r->regnum = regnum; | |||
263 | r->offset = DEPRECATED_REGISTER_BYTE (regnum)(gdbarch_deprecated_register_byte (current_gdbarch, regnum)); | |||
264 | r->in_g_packet = (regnum < NUM_REGS(gdbarch_num_regs (current_gdbarch))); | |||
265 | /* ...name = REGISTER_NAME (regnum); */ | |||
266 | ||||
267 | /* Compute packet size by accumulating the size of all registers. */ | |||
268 | if (deprecated_register_bytes () == 0) | |||
269 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); | |||
270 | } | |||
271 | ||||
272 | /* Default maximum number of characters in a packet body. Many | |||
273 | remote stubs have a hardwired buffer size of 400 bytes | |||
274 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |||
275 | as the maximum packet-size to ensure that the packet and an extra | |||
276 | NUL character can always fit in the buffer. This stops GDB | |||
277 | trashing stubs that try to squeeze an extra NUL into what is | |||
278 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |||
279 | rs->remote_packet_size = 400 - 1; | |||
280 | ||||
281 | /* Should rs->sizeof_g_packet needs more space than the | |||
282 | default, adjust the size accordingly. Remember that each byte is | |||
283 | encoded as two characters. 32 is the overhead for the packet | |||
284 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |||
285 | (``$NN:G...#NN'') is a better guess, the below has been padded a | |||
286 | little. */ | |||
287 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) | |||
288 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |||
289 | ||||
290 | /* This one is filled in when a ``g'' packet is received. */ | |||
291 | rs->actual_register_packet_size = 0; | |||
292 | ||||
293 | return rs; | |||
294 | } | |||
295 | ||||
296 | static struct packet_reg * | |||
297 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |||
298 | { | |||
299 | if (regnum < 0 && regnum >= NUM_REGS(gdbarch_num_regs (current_gdbarch)) + NUM_PSEUDO_REGS(gdbarch_num_pseudo_regs (current_gdbarch))) | |||
300 | return NULL((void*)0); | |||
301 | else | |||
302 | { | |||
303 | struct packet_reg *r = &rs->regs[regnum]; | |||
304 | gdb_assert (r->regnum == regnum)((void) ((r->regnum == regnum) ? 0 : (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/remote.c" , 304, "%s: Assertion `%s' failed.", __PRETTY_FUNCTION__, "r->regnum == regnum" ), 0))); | |||
305 | return r; | |||
306 | } | |||
307 | } | |||
308 | ||||
309 | static struct packet_reg * | |||
310 | packet_reg_from_pnum (struct remote_state *rs, LONGESTlong pnum) | |||
311 | { | |||
312 | int i; | |||
313 | for (i = 0; i < NUM_REGS(gdbarch_num_regs (current_gdbarch)) + NUM_PSEUDO_REGS(gdbarch_num_pseudo_regs (current_gdbarch)); i++) | |||
314 | { | |||
315 | struct packet_reg *r = &rs->regs[i]; | |||
316 | if (r->pnum == pnum) | |||
317 | return r; | |||
318 | } | |||
319 | return NULL((void*)0); | |||
320 | } | |||
321 | ||||
322 | /* FIXME: graces/2002-08-08: These variables should eventually be | |||
323 | bound to an instance of the target object (as in gdbarch-tdep()), | |||
324 | when such a thing exists. */ | |||
325 | ||||
326 | /* This is set to the data address of the access causing the target | |||
327 | to stop for a watchpoint. */ | |||
328 | static CORE_ADDR remote_watch_data_address; | |||
329 | ||||
330 | /* This is non-zero if taregt stopped for a watchpoint. */ | |||
331 | static int remote_stopped_by_watchpoint_p; | |||
332 | ||||
333 | ||||
334 | static struct target_ops remote_ops; | |||
335 | ||||
336 | static struct target_ops extended_remote_ops; | |||
337 | ||||
338 | /* Temporary target ops. Just like the remote_ops and | |||
339 | extended_remote_ops, but with asynchronous support. */ | |||
340 | static struct target_ops remote_async_ops; | |||
341 | ||||
342 | static struct target_ops extended_async_remote_ops; | |||
343 | ||||
344 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |||
345 | ``forever'' still use the normal timeout mechanism. This is | |||
346 | currently used by the ASYNC code to guarentee that target reads | |||
347 | during the initial connect always time-out. Once getpkt has been | |||
348 | modified to return a timeout indication and, in turn | |||
349 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |||
350 | this can go away. */ | |||
351 | static int wait_forever_enabled_p = 1; | |||
352 | ||||
353 | ||||
354 | /* This variable chooses whether to send a ^C or a break when the user | |||
355 | requests program interruption. Although ^C is usually what remote | |||
356 | systems expect, and that is the default here, sometimes a break is | |||
357 | preferable instead. */ | |||
358 | ||||
359 | static int remote_break; | |||
360 | ||||
361 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |||
362 | remote_open knows that we don't have a file open when the program | |||
363 | starts. */ | |||
364 | static struct serial *remote_desc = NULL((void*)0); | |||
365 | ||||
366 | /* This variable sets the number of bits in an address that are to be | |||
367 | sent in a memory ("M" or "m") packet. Normally, after stripping | |||
368 | leading zeros, the entire address would be sent. This variable | |||
369 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |||
370 | initial implementation of remote.c restricted the address sent in | |||
371 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |||
372 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |||
373 | address was never sent. Since fixing this bug may cause a break in | |||
374 | some remote targets this variable is principly provided to | |||
375 | facilitate backward compatibility. */ | |||
376 | ||||
377 | static int remote_address_size; | |||
378 | ||||
379 | /* Tempoary to track who currently owns the terminal. See | |||
380 | target_async_terminal_* for more details. */ | |||
381 | ||||
382 | static int remote_async_terminal_ours_p; | |||
383 | ||||
384 | ||||
385 | /* User configurable variables for the number of characters in a | |||
386 | memory read/write packet. MIN ((rs->remote_packet_size), | |||
387 | rs->sizeof_g_packet) is the default. Some targets need smaller | |||
388 | values (fifo overruns, et.al.) and some users need larger values | |||
389 | (speed up transfers). The variables ``preferred_*'' (the user | |||
390 | request), ``current_*'' (what was actually set) and ``forced_*'' | |||
391 | (Positive - a soft limit, negative - a hard limit). */ | |||
392 | ||||
393 | struct memory_packet_config | |||
394 | { | |||
395 | char *name; | |||
396 | long size; | |||
397 | int fixed_p; | |||
398 | }; | |||
399 | ||||
400 | /* Compute the current size of a read/write packet. Since this makes | |||
401 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |||
402 | ||||
403 | static long | |||
404 | get_memory_packet_size (struct memory_packet_config *config) | |||
405 | { | |||
406 | struct remote_state *rs = get_remote_state (); | |||
407 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk | |||
408 | law?) that some hosts don't cope very well with large alloca() | |||
409 | calls. Eventually the alloca() code will be replaced by calls to | |||
410 | xmalloc() and make_cleanups() allowing this restriction to either | |||
411 | be lifted or removed. */ | |||
412 | #ifndef MAX_REMOTE_PACKET_SIZE16384 | |||
413 | #define MAX_REMOTE_PACKET_SIZE16384 16384 | |||
414 | #endif | |||
415 | /* NOTE: 16 is just chosen at random. */ | |||
416 | #ifndef MIN_REMOTE_PACKET_SIZE16 | |||
417 | #define MIN_REMOTE_PACKET_SIZE16 16 | |||
418 | #endif | |||
419 | long what_they_get; | |||
420 | if (config->fixed_p) | |||
421 | { | |||
422 | if (config->size <= 0) | |||
423 | what_they_get = MAX_REMOTE_PACKET_SIZE16384; | |||
424 | else | |||
425 | what_they_get = config->size; | |||
426 | } | |||
427 | else | |||
428 | { | |||
429 | what_they_get = (rs->remote_packet_size); | |||
430 | /* Limit the packet to the size specified by the user. */ | |||
431 | if (config->size > 0 | |||
432 | && what_they_get > config->size) | |||
433 | what_they_get = config->size; | |||
434 | /* Limit it to the size of the targets ``g'' response. */ | |||
435 | if ((rs->actual_register_packet_size) > 0 | |||
436 | && what_they_get > (rs->actual_register_packet_size)) | |||
437 | what_they_get = (rs->actual_register_packet_size); | |||
438 | } | |||
439 | if (what_they_get > MAX_REMOTE_PACKET_SIZE16384) | |||
440 | what_they_get = MAX_REMOTE_PACKET_SIZE16384; | |||
441 | if (what_they_get < MIN_REMOTE_PACKET_SIZE16) | |||
442 | what_they_get = MIN_REMOTE_PACKET_SIZE16; | |||
443 | return what_they_get; | |||
444 | } | |||
445 | ||||
446 | /* Update the size of a read/write packet. If they user wants | |||
447 | something really big then do a sanity check. */ | |||
448 | ||||
449 | static void | |||
450 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |||
451 | { | |||
452 | int fixed_p = config->fixed_p; | |||
453 | long size = config->size; | |||
454 | if (args == NULL((void*)0)) | |||
455 | error ("Argument required (integer, `fixed' or `limited')."); | |||
456 | else if (strcmp (args, "hard") == 0 | |||
457 | || strcmp (args, "fixed") == 0) | |||
458 | fixed_p = 1; | |||
459 | else if (strcmp (args, "soft") == 0 | |||
460 | || strcmp (args, "limit") == 0) | |||
461 | fixed_p = 0; | |||
462 | else | |||
463 | { | |||
464 | char *end; | |||
465 | size = strtoul (args, &end, 0); | |||
466 | if (args == end) | |||
467 | error ("Invalid %s (bad syntax).", config->name); | |||
468 | #if 0 | |||
469 | /* Instead of explicitly capping the size of a packet to | |||
470 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |||
471 | instead allowed to set the size to something arbitrarily | |||
472 | large. */ | |||
473 | if (size > MAX_REMOTE_PACKET_SIZE16384) | |||
474 | error ("Invalid %s (too large).", config->name); | |||
475 | #endif | |||
476 | } | |||
477 | /* Extra checks? */ | |||
478 | if (fixed_p && !config->fixed_p) | |||
479 | { | |||
480 | if (! query ("The target may not be able to correctly handle a %s\n" | |||
481 | "of %ld bytes. Change the packet size? ", | |||
482 | config->name, size)) | |||
483 | error ("Packet size not changed."); | |||
484 | } | |||
485 | /* Update the config. */ | |||
486 | config->fixed_p = fixed_p; | |||
487 | config->size = size; | |||
488 | } | |||
489 | ||||
490 | static void | |||
491 | show_memory_packet_size (struct memory_packet_config *config) | |||
492 | { | |||
493 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |||
494 | if (config->fixed_p) | |||
495 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |||
496 | get_memory_packet_size (config)); | |||
497 | else | |||
498 | printf_filtered ("Packets are limited to %ld bytes.\n", | |||
499 | get_memory_packet_size (config)); | |||
500 | } | |||
501 | ||||
502 | static struct memory_packet_config memory_write_packet_config = | |||
503 | { | |||
504 | "memory-write-packet-size", | |||
505 | }; | |||
506 | ||||
507 | static void | |||
508 | set_memory_write_packet_size (char *args, int from_tty) | |||
509 | { | |||
510 | set_memory_packet_size (args, &memory_write_packet_config); | |||
511 | } | |||
512 | ||||
513 | static void | |||
514 | show_memory_write_packet_size (char *args, int from_tty) | |||
515 | { | |||
516 | show_memory_packet_size (&memory_write_packet_config); | |||
517 | } | |||
518 | ||||
519 | static long | |||
520 | get_memory_write_packet_size (void) | |||
521 | { | |||
522 | return get_memory_packet_size (&memory_write_packet_config); | |||
523 | } | |||
524 | ||||
525 | static struct memory_packet_config memory_read_packet_config = | |||
526 | { | |||
527 | "memory-read-packet-size", | |||
528 | }; | |||
529 | ||||
530 | static void | |||
531 | set_memory_read_packet_size (char *args, int from_tty) | |||
532 | { | |||
533 | set_memory_packet_size (args, &memory_read_packet_config); | |||
534 | } | |||
535 | ||||
536 | static void | |||
537 | show_memory_read_packet_size (char *args, int from_tty) | |||
538 | { | |||
539 | show_memory_packet_size (&memory_read_packet_config); | |||
540 | } | |||
541 | ||||
542 | static long | |||
543 | get_memory_read_packet_size (void) | |||
544 | { | |||
545 | struct remote_state *rs = get_remote_state (); | |||
546 | long size = get_memory_packet_size (&memory_read_packet_config); | |||
547 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |||
548 | extra buffer size argument before the memory read size can be | |||
549 | increased beyond (rs->remote_packet_size). */ | |||
550 | if (size > (rs->remote_packet_size)) | |||
551 | size = (rs->remote_packet_size); | |||
552 | return size; | |||
553 | } | |||
554 | ||||
555 | ||||
556 | /* Generic configuration support for packets the stub optionally | |||
557 | supports. Allows the user to specify the use of the packet as well | |||
558 | as allowing GDB to auto-detect support in the remote stub. */ | |||
559 | ||||
560 | enum packet_support | |||
561 | { | |||
562 | PACKET_SUPPORT_UNKNOWN = 0, | |||
563 | PACKET_ENABLE, | |||
564 | PACKET_DISABLE | |||
565 | }; | |||
566 | ||||
567 | struct packet_config | |||
568 | { | |||
569 | char *name; | |||
570 | char *title; | |||
571 | enum auto_boolean detect; | |||
572 | enum packet_support support; | |||
573 | }; | |||
574 | ||||
575 | /* Analyze a packet's return value and update the packet config | |||
576 | accordingly. */ | |||
577 | ||||
578 | enum packet_result | |||
579 | { | |||
580 | PACKET_ERROR, | |||
581 | PACKET_OK, | |||
582 | PACKET_UNKNOWN | |||
583 | }; | |||
584 | ||||
585 | static void | |||
586 | update_packet_config (struct packet_config *config) | |||
587 | { | |||
588 | switch (config->detect) | |||
589 | { | |||
590 | case AUTO_BOOLEAN_TRUE: | |||
591 | config->support = PACKET_ENABLE; | |||
592 | break; | |||
593 | case AUTO_BOOLEAN_FALSE: | |||
594 | config->support = PACKET_DISABLE; | |||
595 | break; | |||
596 | case AUTO_BOOLEAN_AUTO: | |||
597 | config->support = PACKET_SUPPORT_UNKNOWN; | |||
598 | break; | |||
599 | } | |||
600 | } | |||
601 | ||||
602 | static void | |||
603 | show_packet_config_cmd (struct packet_config *config) | |||
604 | { | |||
605 | char *support = "internal-error"; | |||
606 | switch (config->support) | |||
607 | { | |||
608 | case PACKET_ENABLE: | |||
609 | support = "enabled"; | |||
610 | break; | |||
611 | case PACKET_DISABLE: | |||
612 | support = "disabled"; | |||
613 | break; | |||
614 | case PACKET_SUPPORT_UNKNOWN: | |||
615 | support = "unknown"; | |||
616 | break; | |||
617 | } | |||
618 | switch (config->detect) | |||
619 | { | |||
620 | case AUTO_BOOLEAN_AUTO: | |||
621 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", | |||
622 | config->name, config->title, support); | |||
623 | break; | |||
624 | case AUTO_BOOLEAN_TRUE: | |||
625 | case AUTO_BOOLEAN_FALSE: | |||
626 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", | |||
627 | config->name, config->title, support); | |||
628 | break; | |||
629 | } | |||
630 | } | |||
631 | ||||
632 | static void | |||
633 | add_packet_config_cmd (struct packet_config *config, | |||
634 | char *name, | |||
635 | char *title, | |||
636 | cmd_sfunc_ftype *set_func, | |||
637 | cmd_sfunc_ftype *show_func, | |||
638 | struct cmd_list_element **set_remote_list, | |||
639 | struct cmd_list_element **show_remote_list, | |||
640 | int legacy) | |||
641 | { | |||
642 | struct cmd_list_element *set_cmd; | |||
643 | struct cmd_list_element *show_cmd; | |||
644 | char *set_doc; | |||
645 | char *show_doc; | |||
646 | char *help_doc; | |||
647 | char *print; | |||
648 | char *cmd_name; | |||
649 | config->name = name; | |||
650 | config->title = title; | |||
651 | config->detect = AUTO_BOOLEAN_AUTO; | |||
652 | config->support = PACKET_SUPPORT_UNKNOWN; | |||
653 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", | |||
654 | name, title); | |||
655 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |||
656 | name, title); | |||
657 | print = xstrprintf ("Current use of remote protocol `%s' (%s) is %%s", | |||
658 | name, title); | |||
659 | /* set/show TITLE-packet {auto,on,off} */ | |||
660 | cmd_name = xstrprintf ("%s-packet", title); | |||
661 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, | |||
662 | &config->detect, set_doc, show_doc, | |||
663 | "", print, | |||
664 | set_func, show_func, | |||
665 | set_remote_list, show_remote_list); | |||
666 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ | |||
667 | if (legacy) | |||
668 | { | |||
669 | char *legacy_name; | |||
670 | legacy_name = xstrprintf ("%s-packet", name); | |||
671 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |||
672 | set_remote_list); | |||
673 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |||
674 | show_remote_list); | |||
675 | } | |||
676 | } | |||
677 | ||||
678 | static enum packet_result | |||
679 | packet_ok (const char *buf, struct packet_config *config) | |||
680 | { | |||
681 | if (buf[0] != '\0') | |||
682 | { | |||
683 | /* The stub recognized the packet request. Check that the | |||
684 | operation succeeded. */ | |||
685 | switch (config->support) | |||
686 | { | |||
687 | case PACKET_SUPPORT_UNKNOWN: | |||
688 | if (remote_debug) | |||
689 | fprintf_unfiltered (gdb_stdlog, | |||
690 | "Packet %s (%s) is supported\n", | |||
691 | config->name, config->title); | |||
692 | config->support = PACKET_ENABLE; | |||
693 | break; | |||
694 | case PACKET_DISABLE: | |||
695 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__695, | |||
696 | "packet_ok: attempt to use a disabled packet"); | |||
697 | break; | |||
698 | case PACKET_ENABLE: | |||
699 | break; | |||
700 | } | |||
701 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |||
702 | /* "OK" - definitly OK. */ | |||
703 | return PACKET_OK; | |||
704 | if (buf[0] == 'E' | |||
705 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |||
706 | && buf[3] == '\0') | |||
707 | /* "Enn" - definitly an error. */ | |||
708 | return PACKET_ERROR; | |||
709 | /* The packet may or may not be OK. Just assume it is */ | |||
710 | return PACKET_OK; | |||
711 | } | |||
712 | else | |||
713 | { | |||
714 | /* The stub does not support the packet. */ | |||
715 | switch (config->support) | |||
716 | { | |||
717 | case PACKET_ENABLE: | |||
718 | if (config->detect == AUTO_BOOLEAN_AUTO) | |||
719 | /* If the stub previously indicated that the packet was | |||
720 | supported then there is a protocol error.. */ | |||
721 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |||
722 | config->name, config->title); | |||
723 | else | |||
724 | /* The user set it wrong. */ | |||
725 | error ("Enabled packet %s (%s) not recognized by stub", | |||
726 | config->name, config->title); | |||
727 | break; | |||
728 | case PACKET_SUPPORT_UNKNOWN: | |||
729 | if (remote_debug) | |||
730 | fprintf_unfiltered (gdb_stdlog, | |||
731 | "Packet %s (%s) is NOT supported\n", | |||
732 | config->name, config->title); | |||
733 | config->support = PACKET_DISABLE; | |||
734 | break; | |||
735 | case PACKET_DISABLE: | |||
736 | break; | |||
737 | } | |||
738 | return PACKET_UNKNOWN; | |||
739 | } | |||
740 | } | |||
741 | ||||
742 | /* Should we try the 'vCont' (descriptive resume) request? */ | |||
743 | static struct packet_config remote_protocol_vcont; | |||
744 | ||||
745 | static void | |||
746 | set_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |||
747 | struct cmd_list_element *c) | |||
748 | { | |||
749 | update_packet_config (&remote_protocol_vcont); | |||
750 | } | |||
751 | ||||
752 | static void | |||
753 | show_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |||
754 | struct cmd_list_element *c) | |||
755 | { | |||
756 | show_packet_config_cmd (&remote_protocol_vcont); | |||
757 | } | |||
758 | ||||
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 | |||
770 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |||
771 | struct cmd_list_element *c) | |||
772 | { | |||
773 | show_packet_config_cmd (&remote_protocol_qSymbol); | |||
774 | } | |||
775 | ||||
776 | /* Should we try the 'P' (set register) request? */ | |||
777 | ||||
778 | static struct packet_config remote_protocol_P; | |||
779 | ||||
780 | static void | |||
781 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, | |||
782 | struct cmd_list_element *c) | |||
783 | { | |||
784 | update_packet_config (&remote_protocol_P); | |||
785 | } | |||
786 | ||||
787 | static void | |||
788 | show_remote_protocol_P_packet_cmd (char *args, int from_tty, | |||
789 | struct cmd_list_element *c) | |||
790 | { | |||
791 | show_packet_config_cmd (&remote_protocol_P); | |||
792 | } | |||
793 | ||||
794 | /* Should we try one of the 'Z' requests? */ | |||
795 | ||||
796 | enum Z_packet_type | |||
797 | { | |||
798 | Z_PACKET_SOFTWARE_BP, | |||
799 | Z_PACKET_HARDWARE_BP, | |||
800 | Z_PACKET_WRITE_WP, | |||
801 | Z_PACKET_READ_WP, | |||
802 | Z_PACKET_ACCESS_WP, | |||
803 | NR_Z_PACKET_TYPES | |||
804 | }; | |||
805 | ||||
806 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; | |||
807 | ||||
808 | /* FIXME: Instead of having all these boiler plate functions, the | |||
809 | command callback should include a context argument. */ | |||
810 | ||||
811 | static void | |||
812 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |||
813 | struct cmd_list_element *c) | |||
814 | { | |||
815 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |||
816 | } | |||
817 | ||||
818 | static void | |||
819 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |||
820 | struct cmd_list_element *c) | |||
821 | { | |||
822 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |||
823 | } | |||
824 | ||||
825 | static void | |||
826 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |||
827 | struct cmd_list_element *c) | |||
828 | { | |||
829 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |||
830 | } | |||
831 | ||||
832 | static void | |||
833 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |||
834 | struct cmd_list_element *c) | |||
835 | { | |||
836 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |||
837 | } | |||
838 | ||||
839 | static void | |||
840 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |||
841 | struct cmd_list_element *c) | |||
842 | { | |||
843 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |||
844 | } | |||
845 | ||||
846 | static void | |||
847 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |||
848 | struct cmd_list_element *c) | |||
849 | { | |||
850 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |||
851 | } | |||
852 | ||||
853 | static void | |||
854 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |||
855 | struct cmd_list_element *c) | |||
856 | { | |||
857 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |||
858 | } | |||
859 | ||||
860 | static void | |||
861 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |||
862 | struct cmd_list_element *c) | |||
863 | { | |||
864 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |||
865 | } | |||
866 | ||||
867 | static void | |||
868 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |||
869 | struct cmd_list_element *c) | |||
870 | { | |||
871 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |||
872 | } | |||
873 | ||||
874 | static void | |||
875 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |||
876 | struct cmd_list_element *c) | |||
877 | { | |||
878 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |||
879 | } | |||
880 | ||||
881 | /* For compatibility with older distributions. Provide a ``set remote | |||
882 | Z-packet ...'' command that updates all the Z packet types. */ | |||
883 | ||||
884 | static enum auto_boolean remote_Z_packet_detect; | |||
885 | ||||
886 | static void | |||
887 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, | |||
888 | struct cmd_list_element *c) | |||
889 | { | |||
890 | int i; | |||
891 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |||
892 | { | |||
893 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |||
894 | update_packet_config (&remote_protocol_Z[i]); | |||
895 | } | |||
896 | } | |||
897 | ||||
898 | static void | |||
899 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty, | |||
900 | struct cmd_list_element *c) | |||
901 | { | |||
902 | int i; | |||
903 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |||
904 | { | |||
905 | show_packet_config_cmd (&remote_protocol_Z[i]); | |||
906 | } | |||
907 | } | |||
908 | ||||
909 | /* Should we try the 'X' (remote binary download) packet? | |||
910 | ||||
911 | This variable (available to the user via "set remote X-packet") | |||
912 | dictates whether downloads are sent in binary (via the 'X' packet). | |||
913 | We assume that the stub can, and attempt to do it. This will be | |||
914 | cleared if the stub does not understand it. This switch is still | |||
915 | needed, though in cases when the packet is supported in the stub, | |||
916 | but the connection does not allow it (i.e., 7-bit serial connection | |||
917 | only). */ | |||
918 | ||||
919 | static struct packet_config remote_protocol_binary_download; | |||
920 | ||||
921 | /* Should we try the 'ThreadInfo' query packet? | |||
922 | ||||
923 | This variable (NOT available to the user: auto-detect only!) | |||
924 | determines whether GDB will use the new, simpler "ThreadInfo" | |||
925 | query or the older, more complex syntax for thread queries. | |||
926 | This is an auto-detect variable (set to true at each connect, | |||
927 | and set to false when the target fails to recognize it). */ | |||
928 | ||||
929 | static int use_threadinfo_query; | |||
930 | static int use_threadextra_query; | |||
931 | ||||
932 | static void | |||
933 | set_remote_protocol_binary_download_cmd (char *args, | |||
934 | int from_tty, | |||
935 | struct cmd_list_element *c) | |||
936 | { | |||
937 | update_packet_config (&remote_protocol_binary_download); | |||
938 | } | |||
939 | ||||
940 | static void | |||
941 | show_remote_protocol_binary_download_cmd (char *args, int from_tty, | |||
942 | struct cmd_list_element *c) | |||
943 | { | |||
944 | show_packet_config_cmd (&remote_protocol_binary_download); | |||
945 | } | |||
946 | ||||
947 | /* Should we try the 'qPart:auxv' (target auxiliary vector read) request? */ | |||
948 | static struct packet_config remote_protocol_qPart_auxv; | |||
949 | ||||
950 | static void | |||
951 | set_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |||
952 | struct cmd_list_element *c) | |||
953 | { | |||
954 | update_packet_config (&remote_protocol_qPart_auxv); | |||
955 | } | |||
956 | ||||
957 | static void | |||
958 | show_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |||
959 | struct cmd_list_element *c) | |||
960 | { | |||
961 | show_packet_config_cmd (&remote_protocol_qPart_auxv); | |||
962 | } | |||
963 | ||||
964 | static struct packet_config remote_protocol_p; | |||
965 | ||||
966 | static void | |||
967 | set_remote_protocol_p_packet_cmd (char *args, int from_tty, | |||
968 | struct cmd_list_element *c) | |||
969 | { | |||
970 | update_packet_config (&remote_protocol_p); | |||
971 | } | |||
972 | ||||
973 | static void | |||
974 | show_remote_protocol_p_packet_cmd (char *args, int from_tty, | |||
975 | struct cmd_list_element *c) | |||
976 | { | |||
977 | show_packet_config_cmd (&remote_protocol_p); | |||
978 | } | |||
979 | ||||
980 | ||||
981 | ||||
982 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ | |||
983 | static void *sigint_remote_twice_token; | |||
984 | static void *sigint_remote_token; | |||
985 | ||||
986 | /* These are pointers to hook functions that may be set in order to | |||
987 | modify resume/wait behavior for a particular architecture. */ | |||
988 | ||||
989 | void (*deprecated_target_resume_hook) (void); | |||
990 | void (*deprecated_target_wait_loop_hook) (void); | |||
991 | ||||
992 | ||||
993 | ||||
994 | /* These are the threads which we last sent to the remote system. | |||
995 | -1 for all or -2 for not sent yet. */ | |||
996 | static int general_thread; | |||
997 | static int continue_thread; | |||
998 | ||||
999 | /* Call this function as a result of | |||
1000 | 1) A halt indication (T packet) containing a thread id | |||
1001 | 2) A direct query of currthread | |||
1002 | 3) Successful execution of set thread | |||
1003 | */ | |||
1004 | ||||
1005 | static void | |||
1006 | record_currthread (int currthread) | |||
1007 | { | |||
1008 | general_thread = currthread; | |||
1009 | ||||
1010 | /* If this is a new thread, add it to GDB's thread list. | |||
1011 | If we leave it up to WFI to do this, bad things will happen. */ | |||
1012 | if (!in_thread_list (pid_to_ptid (currthread))) | |||
1013 | { | |||
1014 | add_thread (pid_to_ptid (currthread)); | |||
1015 | ui_out_text (uiout, "[New "); | |||
1016 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))current_target.to_pid_to_str (pid_to_ptid (currthread))); | |||
1017 | ui_out_text (uiout, "]\n"); | |||
1018 | } | |||
1019 | } | |||
1020 | ||||
1021 | #define MAGIC_NULL_PID42000 42000 | |||
1022 | ||||
1023 | static void | |||
1024 | set_thread (int th, int gen) | |||
1025 | { | |||
1026 | struct remote_state *rs = get_remote_state (); | |||
1027 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
1028 | int state = gen ? general_thread : continue_thread; | |||
1029 | ||||
1030 | if (state == th) | |||
1031 | return; | |||
1032 | ||||
1033 | buf[0] = 'H'; | |||
1034 | buf[1] = gen ? 'g' : 'c'; | |||
1035 | if (th == MAGIC_NULL_PID42000) | |||
1036 | { | |||
1037 | buf[2] = '0'; | |||
1038 | buf[3] = '\0'; | |||
1039 | } | |||
1040 | else if (th < 0) | |||
1041 | sprintf (&buf[2], "-%x", -th); | |||
1042 | else | |||
1043 | sprintf (&buf[2], "%x", th); | |||
1044 | putpkt (buf); | |||
1045 | getpkt (buf, (rs->remote_packet_size), 0); | |||
1046 | if (gen) | |||
1047 | general_thread = th; | |||
1048 | else | |||
1049 | continue_thread = th; | |||
1050 | } | |||
1051 | ||||
1052 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |||
1053 | ||||
1054 | static int | |||
1055 | remote_thread_alive (ptid_t ptid) | |||
1056 | { | |||
1057 | int tid = PIDGET (ptid)(ptid_get_pid (ptid)); | |||
1058 | char buf[16]; | |||
1059 | ||||
1060 | if (tid < 0) | |||
1061 | sprintf (buf, "T-%08x", -tid); | |||
1062 | else | |||
1063 | sprintf (buf, "T%08x", tid); | |||
1064 | putpkt (buf); | |||
1065 | getpkt (buf, sizeof (buf), 0); | |||
1066 | return (buf[0] == 'O' && buf[1] == 'K'); | |||
1067 | } | |||
1068 | ||||
1069 | /* About these extended threadlist and threadinfo packets. They are | |||
1070 | variable length packets but, the fields within them are often fixed | |||
1071 | length. They are redundent enough to send over UDP as is the | |||
1072 | remote protocol in general. There is a matching unit test module | |||
1073 | in libstub. */ | |||
1074 | ||||
1075 | #define OPAQUETHREADBYTES8 8 | |||
1076 | ||||
1077 | /* a 64 bit opaque identifier */ | |||
1078 | typedef unsigned char threadref[OPAQUETHREADBYTES8]; | |||
1079 | ||||
1080 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |||
1081 | protocol encoding, and remote.c. it is not particularly changable */ | |||
1082 | ||||
1083 | /* Right now, the internal structure is int. We want it to be bigger. | |||
1084 | Plan to fix this. | |||
1085 | */ | |||
1086 | ||||
1087 | typedef int gdb_threadref; /* internal GDB thread reference */ | |||
1088 | ||||
1089 | /* gdb_ext_thread_info is an internal GDB data structure which is | |||
1090 | equivalint to the reply of the remote threadinfo packet */ | |||
1091 | ||||
1092 | struct gdb_ext_thread_info | |||
1093 | { | |||
1094 | threadref threadid; /* External form of thread reference */ | |||
1095 | int active; /* Has state interesting to GDB? , regs, stack */ | |||
1096 | char display[256]; /* Brief state display, name, blocked/syspended */ | |||
1097 | char shortname[32]; /* To be used to name threads */ | |||
1098 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |||
1099 | }; | |||
1100 | ||||
1101 | /* The volume of remote transfers can be limited by submitting | |||
1102 | a mask containing bits specifying the desired information. | |||
1103 | Use a union of these values as the 'selection' parameter to | |||
1104 | get_thread_info. FIXME: Make these TAG names more thread specific. | |||
1105 | */ | |||
1106 | ||||
1107 | #define TAG_THREADID1 1 | |||
1108 | #define TAG_EXISTS2 2 | |||
1109 | #define TAG_DISPLAY4 4 | |||
1110 | #define TAG_THREADNAME8 8 | |||
1111 | #define TAG_MOREDISPLAY16 16 | |||
1112 | ||||
1113 | #define BUF_THREAD_ID_SIZE(8*2) (OPAQUETHREADBYTES8*2) | |||
1114 | ||||
1115 | char *unpack_varlen_hex (char *buff, ULONGESTunsigned long *result); | |||
1116 | ||||
1117 | static char *unpack_nibble (char *buf, int *val); | |||
1118 | ||||
1119 | static char *pack_nibble (char *buf, int nibble); | |||
1120 | ||||
1121 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); | |||
1122 | ||||
1123 | static char *unpack_byte (char *buf, int *value); | |||
1124 | ||||
1125 | static char *pack_int (char *buf, int value); | |||
1126 | ||||
1127 | static char *unpack_int (char *buf, int *value); | |||
1128 | ||||
1129 | static char *unpack_string (char *src, char *dest, int length); | |||
1130 | ||||
1131 | static char *pack_threadid (char *pkt, threadref * id); | |||
1132 | ||||
1133 | static char *unpack_threadid (char *inbuf, threadref * id); | |||
1134 | ||||
1135 | void int_to_threadref (threadref * id, int value); | |||
1136 | ||||
1137 | static int threadref_to_int (threadref * ref); | |||
1138 | ||||
1139 | static void copy_threadref (threadref * dest, threadref * src); | |||
1140 | ||||
1141 | static int threadmatch (threadref * dest, threadref * src); | |||
1142 | ||||
1143 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); | |||
1144 | ||||
1145 | static int remote_unpack_thread_info_response (char *pkt, | |||
1146 | threadref * expectedref, | |||
1147 | struct gdb_ext_thread_info | |||
1148 | *info); | |||
1149 | ||||
1150 | ||||
1151 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ | |||
1152 | struct gdb_ext_thread_info *info); | |||
1153 | ||||
1154 | static char *pack_threadlist_request (char *pkt, int startflag, | |||
1155 | int threadcount, | |||
1156 | threadref * nextthread); | |||
1157 | ||||
1158 | static int parse_threadlist_response (char *pkt, | |||
1159 | int result_limit, | |||
1160 | threadref * original_echo, | |||
1161 | threadref * resultlist, int *doneflag); | |||
1162 | ||||
1163 | static int remote_get_threadlist (int startflag, | |||
1164 | threadref * nextthread, | |||
1165 | int result_limit, | |||
1166 | int *done, | |||
1167 | int *result_count, threadref * threadlist); | |||
1168 | ||||
1169 | typedef int (*rmt_thread_action) (threadref * ref, void *context); | |||
1170 | ||||
1171 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, | |||
1172 | void *context, int looplimit); | |||
1173 | ||||
1174 | static int remote_newthread_step (threadref * ref, void *context); | |||
1175 | ||||
1176 | /* encode 64 bits in 16 chars of hex */ | |||
1177 | ||||
1178 | static const char hexchars[] = "0123456789abcdef"; | |||
1179 | ||||
1180 | static int | |||
1181 | ishex (int ch, int *val) | |||
1182 | { | |||
1183 | if ((ch >= 'a') && (ch <= 'f')) | |||
1184 | { | |||
1185 | *val = ch - 'a' + 10; | |||
1186 | return 1; | |||
1187 | } | |||
1188 | if ((ch >= 'A') && (ch <= 'F')) | |||
1189 | { | |||
1190 | *val = ch - 'A' + 10; | |||
1191 | return 1; | |||
1192 | } | |||
1193 | if ((ch >= '0') && (ch <= '9')) | |||
1194 | { | |||
1195 | *val = ch - '0'; | |||
1196 | return 1; | |||
1197 | } | |||
1198 | return 0; | |||
1199 | } | |||
1200 | ||||
1201 | static int | |||
1202 | stubhex (int ch) | |||
1203 | { | |||
1204 | if (ch >= 'a' && ch <= 'f') | |||
1205 | return ch - 'a' + 10; | |||
1206 | if (ch >= '0' && ch <= '9') | |||
1207 | return ch - '0'; | |||
1208 | if (ch >= 'A' && ch <= 'F') | |||
1209 | return ch - 'A' + 10; | |||
1210 | return -1; | |||
1211 | } | |||
1212 | ||||
1213 | static int | |||
1214 | stub_unpack_int (char *buff, int fieldlength) | |||
1215 | { | |||
1216 | int nibble; | |||
1217 | int retval = 0; | |||
1218 | ||||
1219 | while (fieldlength) | |||
1220 | { | |||
1221 | nibble = stubhex (*buff++); | |||
1222 | retval |= nibble; | |||
1223 | fieldlength--; | |||
1224 | if (fieldlength
| |||
1225 | retval = retval << 4; | |||
| ||||
1226 | } | |||
1227 | return retval; | |||
1228 | } | |||
1229 | ||||
1230 | char * | |||
1231 | unpack_varlen_hex (char *buff, /* packet to parse */ | |||
1232 | ULONGESTunsigned long *result) | |||
1233 | { | |||
1234 | int nibble; | |||
1235 | int retval = 0; | |||
1236 | ||||
1237 | while (ishex (*buff, &nibble)) | |||
1238 | { | |||
1239 | buff++; | |||
1240 | retval = retval << 4; | |||
1241 | retval |= nibble & 0x0f; | |||
1242 | } | |||
1243 | *result = retval; | |||
1244 | return buff; | |||
1245 | } | |||
1246 | ||||
1247 | static char * | |||
1248 | unpack_nibble (char *buf, int *val) | |||
1249 | { | |||
1250 | ishex (*buf++, val); | |||
1251 | return buf; | |||
1252 | } | |||
1253 | ||||
1254 | static char * | |||
1255 | pack_nibble (char *buf, int nibble) | |||
1256 | { | |||
1257 | *buf++ = hexchars[(nibble & 0x0f)]; | |||
1258 | return buf; | |||
1259 | } | |||
1260 | ||||
1261 | static char * | |||
1262 | pack_hex_byte (char *pkt, int byte) | |||
1263 | { | |||
1264 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |||
1265 | *pkt++ = hexchars[(byte & 0xf)]; | |||
1266 | return pkt; | |||
1267 | } | |||
1268 | ||||
1269 | static char * | |||
1270 | unpack_byte (char *buf, int *value) | |||
1271 | { | |||
1272 | *value = stub_unpack_int (buf, 2); | |||
1273 | return buf + 2; | |||
1274 | } | |||
1275 | ||||
1276 | static char * | |||
1277 | pack_int (char *buf, int value) | |||
1278 | { | |||
1279 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |||
1280 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |||
1281 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |||
1282 | buf = pack_hex_byte (buf, (value & 0xff)); | |||
1283 | return buf; | |||
1284 | } | |||
1285 | ||||
1286 | static char * | |||
1287 | unpack_int (char *buf, int *value) | |||
1288 | { | |||
1289 | *value = stub_unpack_int (buf, 8); | |||
1290 | return buf + 8; | |||
1291 | } | |||
1292 | ||||
1293 | #if 0 /* currently unused, uncomment when needed */ | |||
1294 | static char *pack_string (char *pkt, char *string); | |||
1295 | ||||
1296 | static char * | |||
1297 | pack_string (char *pkt, char *string) | |||
1298 | { | |||
1299 | char ch; | |||
1300 | int len; | |||
1301 | ||||
1302 | len = strlen (string); | |||
1303 | if (len > 200) | |||
1304 | len = 200; /* Bigger than most GDB packets, junk??? */ | |||
1305 | pkt = pack_hex_byte (pkt, len); | |||
1306 | while (len-- > 0) | |||
1307 | { | |||
1308 | ch = *string++; | |||
1309 | if ((ch == '\0') || (ch == '#')) | |||
1310 | ch = '*'; /* Protect encapsulation */ | |||
1311 | *pkt++ = ch; | |||
1312 | } | |||
1313 | return pkt; | |||
1314 | } | |||
1315 | #endif /* 0 (unused) */ | |||
1316 | ||||
1317 | static char * | |||
1318 | unpack_string (char *src, char *dest, int length) | |||
1319 | { | |||
1320 | while (length--) | |||
1321 | *dest++ = *src++; | |||
1322 | *dest = '\0'; | |||
1323 | return src; | |||
1324 | } | |||
1325 | ||||
1326 | static char * | |||
1327 | pack_threadid (char *pkt, threadref *id) | |||
1328 | { | |||
1329 | char *limit; | |||
1330 | unsigned char *altid; | |||
1331 | ||||
1332 | altid = (unsigned char *) id; | |||
1333 | limit = pkt + BUF_THREAD_ID_SIZE(8*2); | |||
1334 | while (pkt < limit) | |||
1335 | pkt = pack_hex_byte (pkt, *altid++); | |||
1336 | return pkt; | |||
1337 | } | |||
1338 | ||||
1339 | ||||
1340 | static char * | |||
1341 | unpack_threadid (char *inbuf, threadref *id) | |||
1342 | { | |||
1343 | char *altref; | |||
1344 | char *limit = inbuf + BUF_THREAD_ID_SIZE(8*2); | |||
1345 | int x, y; | |||
1346 | ||||
1347 | altref = (char *) id; | |||
1348 | ||||
1349 | while (inbuf < limit) | |||
1350 | { | |||
1351 | x = stubhex (*inbuf++); | |||
1352 | y = stubhex (*inbuf++); | |||
1353 | *altref++ = (x << 4) | y; | |||
1354 | } | |||
1355 | return inbuf; | |||
1356 | } | |||
1357 | ||||
1358 | /* Externally, threadrefs are 64 bits but internally, they are still | |||
1359 | ints. This is due to a mismatch of specifications. We would like | |||
1360 | to use 64bit thread references internally. This is an adapter | |||
1361 | function. */ | |||
1362 | ||||
1363 | void | |||
1364 | int_to_threadref (threadref *id, int value) | |||
1365 | { | |||
1366 | unsigned char *scan; | |||
1367 | ||||
1368 | scan = (unsigned char *) id; | |||
1369 | { | |||
1370 | int i = 4; | |||
1371 | while (i--) | |||
1372 | *scan++ = 0; | |||
1373 | } | |||
1374 | *scan++ = (value >> 24) & 0xff; | |||
1375 | *scan++ = (value >> 16) & 0xff; | |||
1376 | *scan++ = (value >> 8) & 0xff; | |||
1377 | *scan++ = (value & 0xff); | |||
1378 | } | |||
1379 | ||||
1380 | static int | |||
1381 | threadref_to_int (threadref *ref) | |||
1382 | { | |||
1383 | int i, value = 0; | |||
1384 | unsigned char *scan; | |||
1385 | ||||
1386 | scan = (char *) ref; | |||
1387 | scan += 4; | |||
1388 | i = 4; | |||
1389 | while (i-- > 0) | |||
1390 | value = (value << 8) | ((*scan++) & 0xff); | |||
1391 | return value; | |||
1392 | } | |||
1393 | ||||
1394 | static void | |||
1395 | copy_threadref (threadref *dest, threadref *src) | |||
1396 | { | |||
1397 | int i; | |||
1398 | unsigned char *csrc, *cdest; | |||
1399 | ||||
1400 | csrc = (unsigned char *) src; | |||
1401 | cdest = (unsigned char *) dest; | |||
1402 | i = 8; | |||
1403 | while (i--) | |||
1404 | *cdest++ = *csrc++; | |||
1405 | } | |||
1406 | ||||
1407 | static int | |||
1408 | threadmatch (threadref *dest, threadref *src) | |||
1409 | { | |||
1410 | /* things are broken right now, so just assume we got a match */ | |||
1411 | #if 0 | |||
1412 | unsigned char *srcp, *destp; | |||
1413 | int i, result; | |||
1414 | srcp = (char *) src; | |||
1415 | destp = (char *) dest; | |||
1416 | ||||
1417 | result = 1; | |||
1418 | while (i-- > 0) | |||
1419 | result &= (*srcp++ == *destp++) ? 1 : 0; | |||
1420 | return result; | |||
1421 | #endif | |||
1422 | return 1; | |||
1423 | } | |||
1424 | ||||
1425 | /* | |||
1426 | threadid:1, # always request threadid | |||
1427 | context_exists:2, | |||
1428 | display:4, | |||
1429 | unique_name:8, | |||
1430 | more_display:16 | |||
1431 | */ | |||
1432 | ||||
1433 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |||
1434 | ||||
1435 | static char * | |||
1436 | pack_threadinfo_request (char *pkt, int mode, threadref *id) | |||
1437 | { | |||
1438 | *pkt++ = 'q'; /* Info Query */ | |||
1439 | *pkt++ = 'P'; /* process or thread info */ | |||
1440 | pkt = pack_int (pkt, mode); /* mode */ | |||
1441 | pkt = pack_threadid (pkt, id); /* threadid */ | |||
1442 | *pkt = '\0'; /* terminate */ | |||
1443 | return pkt; | |||
1444 | } | |||
1445 | ||||
1446 | /* These values tag the fields in a thread info response packet */ | |||
1447 | /* Tagging the fields allows us to request specific fields and to | |||
1448 | add more fields as time goes by */ | |||
1449 | ||||
1450 | #define TAG_THREADID1 1 /* Echo the thread identifier */ | |||
1451 | #define TAG_EXISTS2 2 /* Is this process defined enough to | |||
1452 | fetch registers and its stack */ | |||
1453 | #define TAG_DISPLAY4 4 /* A short thing maybe to put on a window */ | |||
1454 | #define TAG_THREADNAME8 8 /* string, maps 1-to-1 with a thread is */ | |||
1455 | #define TAG_MOREDISPLAY16 16 /* Whatever the kernel wants to say about | |||
1456 | the process */ | |||
1457 | ||||
1458 | static int | |||
1459 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, | |||
1460 | struct gdb_ext_thread_info *info) | |||
1461 | { | |||
1462 | struct remote_state *rs = get_remote_state (); | |||
1463 | int mask, length; | |||
1464 | unsigned int tag; | |||
1465 | threadref ref; | |||
1466 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ | |||
1467 | int retval = 1; | |||
1468 | ||||
1469 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |||
1470 | info->active = 0; | |||
1471 | info->display[0] = '\0'; | |||
1472 | info->shortname[0] = '\0'; | |||
1473 | info->more_display[0] = '\0'; | |||
1474 | ||||
1475 | /* Assume the characters indicating the packet type have been stripped */ | |||
1476 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |||
1477 | pkt = unpack_threadid (pkt, &ref); | |||
1478 | ||||
1479 | if (mask == 0) | |||
1480 | warning ("Incomplete response to threadinfo request\n"); | |||
1481 | if (!threadmatch (&ref, expectedref)) | |||
1482 | { /* This is an answer to a different request */ | |||
1483 | warning ("ERROR RMT Thread info mismatch\n"); | |||
1484 | return 0; | |||
1485 | } | |||
1486 | copy_threadref (&info->threadid, &ref); | |||
1487 | ||||
1488 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |||
1489 | ||||
1490 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ | |||
1491 | { | |||
1492 | pkt = unpack_int (pkt, &tag); /* tag */ | |||
1493 | pkt = unpack_byte (pkt, &length); /* length */ | |||
1494 | if (!(tag & mask)) /* tags out of synch with mask */ | |||
1495 | { | |||
1496 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |||
1497 | retval = 0; | |||
1498 | break; | |||
1499 | } | |||
1500 | if (tag == TAG_THREADID1) | |||
1501 | { | |||
1502 | if (length != 16) | |||
1503 | { | |||
1504 | warning ("ERROR RMT: length of threadid is not 16\n"); | |||
1505 | retval = 0; | |||
1506 | break; | |||
1507 | } | |||
1508 | pkt = unpack_threadid (pkt, &ref); | |||
1509 | mask = mask & ~TAG_THREADID1; | |||
1510 | continue; | |||
1511 | } | |||
1512 | if (tag == TAG_EXISTS2) | |||
1513 | { | |||
1514 | info->active = stub_unpack_int (pkt, length); | |||
1515 | pkt += length; | |||
1516 | mask = mask & ~(TAG_EXISTS2); | |||
1517 | if (length > 8) | |||
1518 | { | |||
1519 | warning ("ERROR RMT: 'exists' length too long\n"); | |||
1520 | retval = 0; | |||
1521 | break; | |||
1522 | } | |||
1523 | continue; | |||
1524 | } | |||
1525 | if (tag == TAG_THREADNAME8) | |||
1526 | { | |||
1527 | pkt = unpack_string (pkt, &info->shortname[0], length); | |||
1528 | mask = mask & ~TAG_THREADNAME8; | |||
1529 | continue; | |||
1530 | } | |||
1531 | if (tag == TAG_DISPLAY4) | |||
1532 | { | |||
1533 | pkt = unpack_string (pkt, &info->display[0], length); | |||
1534 | mask = mask & ~TAG_DISPLAY4; | |||
1535 | continue; | |||
1536 | } | |||
1537 | if (tag == TAG_MOREDISPLAY16) | |||
1538 | { | |||
1539 | pkt = unpack_string (pkt, &info->more_display[0], length); | |||
1540 | mask = mask & ~TAG_MOREDISPLAY16; | |||
1541 | continue; | |||
1542 | } | |||
1543 | warning ("ERROR RMT: unknown thread info tag\n"); | |||
1544 | break; /* Not a tag we know about */ | |||
1545 | } | |||
1546 | return retval; | |||
1547 | } | |||
1548 | ||||
1549 | static int | |||
1550 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ | |||
1551 | struct gdb_ext_thread_info *info) | |||
1552 | { | |||
1553 | struct remote_state *rs = get_remote_state (); | |||
1554 | int result; | |||
1555 | char *threadinfo_pkt = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
1556 | ||||
1557 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |||
1558 | putpkt (threadinfo_pkt); | |||
1559 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); | |||
1560 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, | |||
1561 | info); | |||
1562 | return result; | |||
1563 | } | |||
1564 | ||||
1565 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |||
1566 | ||||
1567 | static char * | |||
1568 | pack_threadlist_request (char *pkt, int startflag, int threadcount, | |||
1569 | threadref *nextthread) | |||
1570 | { | |||
1571 | *pkt++ = 'q'; /* info query packet */ | |||
1572 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |||
1573 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |||
1574 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |||
1575 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |||
1576 | *pkt = '\0'; | |||
1577 | return pkt; | |||
1578 | } | |||
1579 | ||||
1580 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |||
1581 | ||||
1582 | static int | |||
1583 | parse_threadlist_response (char *pkt, int result_limit, | |||
1584 | threadref *original_echo, threadref *resultlist, | |||
1585 | int *doneflag) | |||
1586 | { | |||
1587 | struct remote_state *rs = get_remote_state (); | |||
1588 | char *limit; | |||
1589 | int count, resultcount, done; | |||
1590 | ||||
1591 | resultcount = 0; | |||
1592 | /* Assume the 'q' and 'M chars have been stripped. */ | |||
1593 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE(8*2)); /* done parse past here */ | |||
1594 | pkt = unpack_byte (pkt, &count); /* count field */ | |||
1595 | pkt = unpack_nibble (pkt, &done); | |||
1596 | /* The first threadid is the argument threadid. */ | |||
1597 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |||
1598 | while ((count-- > 0) && (pkt < limit)) | |||
1599 | { | |||
1600 | pkt = unpack_threadid (pkt, resultlist++); | |||
1601 | if (resultcount++ >= result_limit) | |||
1602 | break; | |||
1603 | } | |||
1604 | if (doneflag) | |||
1605 | *doneflag = done; | |||
1606 | return resultcount; | |||
1607 | } | |||
1608 | ||||
1609 | static int | |||
1610 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, | |||
1611 | int *done, int *result_count, threadref *threadlist) | |||
1612 | { | |||
1613 | struct remote_state *rs = get_remote_state (); | |||
1614 | static threadref echo_nextthread; | |||
1615 | char *threadlist_packet = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
1616 | char *t_response = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
1617 | int result = 1; | |||
1618 | ||||
1619 | /* Trancate result limit to be smaller than the packet size */ | |||
1620 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE(8*2)) + 10) >= (rs->remote_packet_size)) | |||
1621 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE(8*2)) - 2; | |||
1622 | ||||
1623 | pack_threadlist_request (threadlist_packet, | |||
1624 | startflag, result_limit, nextthread); | |||
1625 | putpkt (threadlist_packet); | |||
1626 | getpkt (t_response, (rs->remote_packet_size), 0); | |||
1627 | ||||
1628 | *result_count = | |||
1629 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |||
1630 | threadlist, done); | |||
1631 | ||||
1632 | if (!threadmatch (&echo_nextthread, nextthread)) | |||
1633 | { | |||
1634 | /* FIXME: This is a good reason to drop the packet */ | |||
1635 | /* Possably, there is a duplicate response */ | |||
1636 | /* Possabilities : | |||
1637 | retransmit immediatly - race conditions | |||
1638 | retransmit after timeout - yes | |||
1639 | exit | |||
1640 | wait for packet, then exit | |||
1641 | */ | |||
1642 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |||
1643 | return 0; /* I choose simply exiting */ | |||
1644 | } | |||
1645 | if (*result_count <= 0) | |||
1646 | { | |||
1647 | if (*done != 1) | |||
1648 | { | |||
1649 | warning ("RMT ERROR : failed to get remote thread list\n"); | |||
1650 | result = 0; | |||
1651 | } | |||
1652 | return result; /* break; */ | |||
1653 | } | |||
1654 | if (*result_count > result_limit) | |||
1655 | { | |||
1656 | *result_count = 0; | |||
1657 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |||
1658 | return 0; | |||
1659 | } | |||
1660 | return result; | |||
1661 | } | |||
1662 | ||||
1663 | /* This is the interface between remote and threads, remotes upper interface */ | |||
1664 | ||||
1665 | /* remote_find_new_threads retrieves the thread list and for each | |||
1666 | thread in the list, looks up the thread in GDB's internal list, | |||
1667 | ading the thread if it does not already exist. This involves | |||
1668 | getting partial thread lists from the remote target so, polling the | |||
1669 | quit_flag is required. */ | |||
1670 | ||||
1671 | ||||
1672 | /* About this many threadisds fit in a packet. */ | |||
1673 | ||||
1674 | #define MAXTHREADLISTRESULTS32 32 | |||
1675 | ||||
1676 | static int | |||
1677 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, | |||
1678 | int looplimit) | |||
1679 | { | |||
1680 | int done, i, result_count; | |||
1681 | int startflag = 1; | |||
1682 | int result = 1; | |||
1683 | int loopcount = 0; | |||
1684 | static threadref nextthread; | |||
1685 | static threadref resultthreadlist[MAXTHREADLISTRESULTS32]; | |||
1686 | ||||
1687 | done = 0; | |||
1688 | while (!done) | |||
1689 | { | |||
1690 | if (loopcount++ > looplimit) | |||
1691 | { | |||
1692 | result = 0; | |||
1693 | warning ("Remote fetch threadlist -infinite loop-\n"); | |||
1694 | break; | |||
1695 | } | |||
1696 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS32, | |||
1697 | &done, &result_count, resultthreadlist)) | |||
1698 | { | |||
1699 | result = 0; | |||
1700 | break; | |||
1701 | } | |||
1702 | /* clear for later iterations */ | |||
1703 | startflag = 0; | |||
1704 | /* Setup to resume next batch of thread references, set nextthread. */ | |||
1705 | if (result_count >= 1) | |||
1706 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |||
1707 | i = 0; | |||
1708 | while (result_count--) | |||
1709 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |||
1710 | break; | |||
1711 | } | |||
1712 | return result; | |||
1713 | } | |||
1714 | ||||
1715 | static int | |||
1716 | remote_newthread_step (threadref *ref, void *context) | |||
1717 | { | |||
1718 | ptid_t ptid; | |||
1719 | ||||
1720 | ptid = pid_to_ptid (threadref_to_int (ref)); | |||
1721 | ||||
1722 | if (!in_thread_list (ptid)) | |||
1723 | add_thread (ptid); | |||
1724 | return 1; /* continue iterator */ | |||
1725 | } | |||
1726 | ||||
1727 | #define CRAZY_MAX_THREADS1000 1000 | |||
1728 | ||||
1729 | static ptid_t | |||
1730 | remote_current_thread (ptid_t oldpid) | |||
1731 | { | |||
1732 | struct remote_state *rs = get_remote_state (); | |||
1733 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
1734 | ||||
1735 | putpkt ("qC"); | |||
1736 | getpkt (buf, (rs->remote_packet_size), 0); | |||
1737 | if (buf[0] == 'Q' && buf[1] == 'C') | |||
1738 | return pid_to_ptid (strtol (&buf[2], NULL((void*)0), 16)); | |||
1739 | else | |||
1740 | return oldpid; | |||
1741 | } | |||
1742 | ||||
1743 | /* Find new threads for info threads command. | |||
1744 | * Original version, using John Metzler's thread protocol. | |||
1745 | */ | |||
1746 | ||||
1747 | static void | |||
1748 | remote_find_new_threads (void) | |||
1749 | { | |||
1750 | remote_threadlist_iterator (remote_newthread_step, 0, | |||
1751 | CRAZY_MAX_THREADS1000); | |||
1752 | if (PIDGET (inferior_ptid)(ptid_get_pid (inferior_ptid)) == MAGIC_NULL_PID42000) /* ack ack ack */ | |||
1753 | inferior_ptid = remote_current_thread (inferior_ptid); | |||
1754 | } | |||
1755 | ||||
1756 | /* | |||
1757 | * Find all threads for info threads command. | |||
1758 | * Uses new thread protocol contributed by Cisco. | |||
1759 | * Falls back and attempts to use the older method (above) | |||
1760 | * if the target doesn't respond to the new method. | |||
1761 | */ | |||
1762 | ||||
1763 | static void | |||
1764 | remote_threads_info (void) | |||
1765 | { | |||
1766 | struct remote_state *rs = get_remote_state (); | |||
1767 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
1768 | char *bufp; | |||
1769 | int tid; | |||
1770 | ||||
1771 | if (remote_desc == 0) /* paranoia */ | |||
1772 | error ("Command can only be used when connected to the remote target."); | |||
1773 | ||||
1774 | if (use_threadinfo_query) | |||
1775 | { | |||
1776 | putpkt ("qfThreadInfo"); | |||
1777 | bufp = buf; | |||
1778 | getpkt (bufp, (rs->remote_packet_size), 0); | |||
1779 | if (bufp[0] != '\0') /* q packet recognized */ | |||
1780 | { | |||
1781 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |||
1782 | { | |||
1783 | do | |||
1784 | { | |||
1785 | tid = strtol (bufp, &bufp, 16); | |||
1786 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) | |||
1787 | add_thread (pid_to_ptid (tid)); | |||
1788 | } | |||
1789 | while (*bufp++ == ','); /* comma-separated list */ | |||
1790 | putpkt ("qsThreadInfo"); | |||
1791 | bufp = buf; | |||
1792 | getpkt (bufp, (rs->remote_packet_size), 0); | |||
1793 | } | |||
1794 | return; /* done */ | |||
1795 | } | |||
1796 | } | |||
1797 | ||||
1798 | /* Else fall back to old method based on jmetzler protocol. */ | |||
1799 | use_threadinfo_query = 0; | |||
1800 | remote_find_new_threads (); | |||
1801 | return; | |||
1802 | } | |||
1803 | ||||
1804 | /* | |||
1805 | * Collect a descriptive string about the given thread. | |||
1806 | * The target may say anything it wants to about the thread | |||
1807 | * (typically info about its blocked / runnable state, name, etc.). | |||
1808 | * This string will appear in the info threads display. | |||
1809 | * | |||
1810 | * Optional: targets are not required to implement this function. | |||
1811 | */ | |||
1812 | ||||
1813 | static char * | |||
1814 | remote_threads_extra_info (struct thread_info *tp) | |||
1815 | { | |||
1816 | struct remote_state *rs = get_remote_state (); | |||
1817 | int result; | |||
1818 | int set; | |||
1819 | threadref id; | |||
1820 | struct gdb_ext_thread_info threadinfo; | |||
1821 | static char display_buf[100]; /* arbitrary... */ | |||
1822 | char *bufp = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
1823 | int n = 0; /* position in display_buf */ | |||
1824 | ||||
1825 | if (remote_desc == 0) /* paranoia */ | |||
| ||||
1826 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__1826, | |||
1827 | "remote_threads_extra_info"); | |||
1828 | ||||
1829 | if (use_threadextra_query) | |||
1830 | { | |||
1831 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)(ptid_get_pid (tp->ptid))); | |||
1832 | putpkt (bufp); | |||
1833 | getpkt (bufp, (rs->remote_packet_size), 0); | |||
1834 | if (bufp[0] != 0) | |||
1835 | { | |||
1836 | n = min (strlen (bufp) / 2, sizeof (display_buf))((strlen (bufp) / 2) < (sizeof (display_buf)) ? (strlen (bufp ) / 2) : (sizeof (display_buf))); | |||
1837 | result = hex2bin (bufp, display_buf, n); | |||
1838 | display_buf [result] = '\0'; | |||
1839 | return display_buf; | |||
1840 | } | |||
1841 | } | |||
1842 | ||||
1843 | /* If the above query fails, fall back to the old method. */ | |||
1844 | use_threadextra_query = 0; | |||
1845 | set = TAG_THREADID1 | TAG_EXISTS2 | TAG_THREADNAME8 | |||
1846 | | TAG_MOREDISPLAY16 | TAG_DISPLAY4; | |||
1847 | int_to_threadref (&id, PIDGET (tp->ptid)(ptid_get_pid (tp->ptid))); | |||
1848 | if (remote_get_threadinfo (&id, set, &threadinfo)) | |||
1849 | if (threadinfo.active) | |||
1850 | { | |||
1851 | if (*threadinfo.shortname) | |||
1852 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |||
1853 | if (*threadinfo.display) | |||
1854 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |||
1855 | if (*threadinfo.more_display) | |||
1856 | n += sprintf(&display_buf[n], " Priority: %s", | |||
1857 | threadinfo.more_display); | |||
1858 | ||||
1859 | if (n > 0) | |||
1860 | { | |||
1861 | /* for purely cosmetic reasons, clear up trailing commas */ | |||
1862 | if (',' == display_buf[n-1]) | |||
1863 | display_buf[n-1] = ' '; | |||
1864 | return display_buf; | |||
1865 | } | |||
1866 | } | |||
1867 | return NULL((void*)0); | |||
1868 | } | |||
1869 | ||||
1870 | ||||
1871 | ||||
1872 | /* Restart the remote side; this is an extended protocol operation. */ | |||
1873 | ||||
1874 | static void | |||
1875 | extended_remote_restart (void) | |||
1876 | { | |||
1877 | struct remote_state *rs = get_remote_state (); | |||
1878 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
1879 | ||||
1880 | /* Send the restart command; for reasons I don't understand the | |||
1881 | remote side really expects a number after the "R". */ | |||
1882 | buf[0] = 'R'; | |||
1883 | sprintf (&buf[1], "%x", 0); | |||
1884 | putpkt (buf); | |||
1885 | ||||
1886 | /* Now query for status so this looks just like we restarted | |||
1887 | gdbserver from scratch. */ | |||
1888 | putpkt ("?"); | |||
1889 | getpkt (buf, (rs->remote_packet_size), 0); | |||
1890 | } | |||
1891 | ||||
1892 | /* Clean up connection to a remote debugger. */ | |||
1893 | ||||
1894 | static void | |||
1895 | remote_close (int quitting) | |||
1896 | { | |||
1897 | if (remote_desc) | |||
1898 | serial_close (remote_desc); | |||
1899 | remote_desc = NULL((void*)0); | |||
1900 | } | |||
1901 | ||||
1902 | /* Query the remote side for the text, data and bss offsets. */ | |||
1903 | ||||
1904 | static void | |||
1905 | get_offsets (void) | |||
1906 | { | |||
1907 | struct remote_state *rs = get_remote_state (); | |||
1908 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
1909 | char *ptr; | |||
1910 | int lose; | |||
1911 | CORE_ADDR text_addr, data_addr, bss_addr; | |||
1912 | struct section_offsets *offs; | |||
1913 | ||||
1914 | putpkt ("qOffsets"); | |||
1915 | ||||
1916 | getpkt (buf, (rs->remote_packet_size), 0); | |||
1917 | ||||
1918 | if (buf[0] == '\000') | |||
1919 | return; /* Return silently. Stub doesn't support | |||
1920 | this command. */ | |||
1921 | if (buf[0] == 'E') | |||
1922 | { | |||
1923 | warning ("Remote failure reply: %s", buf); | |||
1924 | return; | |||
1925 | } | |||
1926 | ||||
1927 | /* Pick up each field in turn. This used to be done with scanf, but | |||
1928 | scanf will make trouble if CORE_ADDR size doesn't match | |||
1929 | conversion directives correctly. The following code will work | |||
1930 | with any size of CORE_ADDR. */ | |||
1931 | text_addr = data_addr = bss_addr = 0; | |||
1932 | ptr = buf; | |||
1933 | lose = 0; | |||
1934 | ||||
1935 | if (strncmp (ptr, "Text=", 5) == 0) | |||
1936 | { | |||
1937 | ptr += 5; | |||
1938 | /* Don't use strtol, could lose on big values. */ | |||
1939 | while (*ptr && *ptr != ';') | |||
1940 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |||
1941 | } | |||
1942 | else | |||
1943 | lose = 1; | |||
1944 | ||||
1945 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |||
1946 | { | |||
1947 | ptr += 6; | |||
1948 | while (*ptr && *ptr != ';') | |||
1949 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |||
1950 | } | |||
1951 | else | |||
1952 | lose = 1; | |||
1953 | ||||
1954 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |||
1955 | { | |||
1956 | ptr += 5; | |||
1957 | while (*ptr && *ptr != ';') | |||
1958 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |||
1959 | } | |||
1960 | else | |||
1961 | lose = 1; | |||
1962 | ||||
1963 | if (lose) | |||
1964 | error ("Malformed response to offset query, %s", buf); | |||
1965 | ||||
1966 | if (symfile_objfile == NULL((void*)0)) | |||
1967 | return; | |||
1968 | ||||
1969 | offs = ((struct section_offsets *) | |||
1970 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))__builtin_alloca((sizeof (struct section_offsets) + sizeof (( (struct section_offsets *) 0)->offsets) * ((symfile_objfile ->num_sections)-1)))); | |||
1971 | memcpy (offs, symfile_objfile->section_offsets, | |||
1972 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)(sizeof (struct section_offsets) + sizeof (((struct section_offsets *) 0)->offsets) * ((symfile_objfile->num_sections)-1))); | |||
1973 | ||||
1974 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)((symfile_objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/remote.c", 1974, "sect_index_text not initialized" ), -1) : symfile_objfile->sect_index_text)] = text_addr; | |||
1975 | ||||
1976 | /* This is a temporary kludge to force data and bss to use the same offsets | |||
1977 | because that's what nlmconv does now. The real solution requires changes | |||
1978 | to the stub and remote.c that I don't have time to do right now. */ | |||
1979 | ||||
1980 | offs->offsets[SECT_OFF_DATA (symfile_objfile)((symfile_objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/remote.c", 1980, "sect_index_data not initialized" ), -1) : symfile_objfile->sect_index_data)] = data_addr; | |||
1981 | offs->offsets[SECT_OFF_BSS (symfile_objfile)(symfile_objfile)->sect_index_bss] = data_addr; | |||
1982 | ||||
1983 | objfile_relocate (symfile_objfile, offs); | |||
1984 | } | |||
1985 | ||||
1986 | /* Stub for catch_errors. */ | |||
1987 | ||||
1988 | static int | |||
1989 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) | |||
1990 | { | |||
1991 | start_remote (); /* Initialize gdb process mechanisms */ | |||
1992 | /* NOTE: Return something >=0. A -ve value is reserved for | |||
1993 | catch_exceptions. */ | |||
1994 | return 1; | |||
1995 | } | |||
1996 | ||||
1997 | static int | |||
1998 | remote_start_remote (struct ui_out *uiout, void *dummy) | |||
1999 | { | |||
2000 | immediate_quit++; /* Allow user to interrupt it */ | |||
2001 | ||||
2002 | /* Ack any packet which the remote side has already sent. */ | |||
2003 | serial_write (remote_desc, "+", 1); | |||
2004 | ||||
2005 | /* Let the stub know that we want it to return the thread. */ | |||
2006 | set_thread (-1, 0); | |||
2007 | ||||
2008 | inferior_ptid = remote_current_thread (inferior_ptid); | |||
2009 | ||||
2010 | get_offsets (); /* Get text, data & bss offsets */ | |||
2011 | ||||
2012 | putpkt ("?"); /* initiate a query from remote machine */ | |||
2013 | immediate_quit--; | |||
2014 | ||||
2015 | /* NOTE: See comment above in remote_start_remote_dummy(). This | |||
2016 | function returns something >=0. */ | |||
2017 | return remote_start_remote_dummy (uiout, dummy); | |||
2018 | } | |||
2019 | ||||
2020 | /* Open a connection to a remote debugger. | |||
2021 | NAME is the filename used for communication. */ | |||
2022 | ||||
2023 | static void | |||
2024 | remote_open (char *name, int from_tty) | |||
2025 | { | |||
2026 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); | |||
2027 | } | |||
2028 | ||||
2029 | /* Just like remote_open, but with asynchronous support. */ | |||
2030 | static void | |||
2031 | remote_async_open (char *name, int from_tty) | |||
2032 | { | |||
2033 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); | |||
2034 | } | |||
2035 | ||||
2036 | /* Open a connection to a remote debugger using the extended | |||
2037 | remote gdb protocol. NAME is the filename used for communication. */ | |||
2038 | ||||
2039 | static void | |||
2040 | extended_remote_open (char *name, int from_tty) | |||
2041 | { | |||
2042 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, | |||
2043 | 0 /* async_p */); | |||
2044 | } | |||
2045 | ||||
2046 | /* Just like extended_remote_open, but with asynchronous support. */ | |||
2047 | static void | |||
2048 | extended_remote_async_open (char *name, int from_tty) | |||
2049 | { | |||
2050 | remote_open_1 (name, from_tty, &extended_async_remote_ops, | |||
2051 | 1 /*extended_p */, 1 /* async_p */); | |||
2052 | } | |||
2053 | ||||
2054 | /* Generic code for opening a connection to a remote target. */ | |||
2055 | ||||
2056 | static void | |||
2057 | init_all_packet_configs (void) | |||
2058 | { | |||
2059 | int i; | |||
2060 | update_packet_config (&remote_protocol_P); | |||
2061 | update_packet_config (&remote_protocol_p); | |||
2062 | update_packet_config (&remote_protocol_qSymbol); | |||
2063 | update_packet_config (&remote_protocol_vcont); | |||
2064 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |||
2065 | update_packet_config (&remote_protocol_Z[i]); | |||
2066 | /* Force remote_write_bytes to check whether target supports binary | |||
2067 | downloading. */ | |||
2068 | update_packet_config (&remote_protocol_binary_download); | |||
2069 | update_packet_config (&remote_protocol_qPart_auxv); | |||
2070 | } | |||
2071 | ||||
2072 | /* Symbol look-up. */ | |||
2073 | ||||
2074 | static void | |||
2075 | remote_check_symbols (struct objfile *objfile) | |||
2076 | { | |||
2077 | struct remote_state *rs = get_remote_state (); | |||
2078 | char *msg, *reply, *tmp; | |||
2079 | struct minimal_symbol *sym; | |||
2080 | int end; | |||
2081 | ||||
2082 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |||
2083 | return; | |||
2084 | ||||
2085 | msg = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
2086 | reply = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
2087 | ||||
2088 | /* Invite target to request symbol lookups. */ | |||
2089 | ||||
2090 | putpkt ("qSymbol::"); | |||
2091 | getpkt (reply, (rs->remote_packet_size), 0); | |||
2092 | packet_ok (reply, &remote_protocol_qSymbol); | |||
2093 | ||||
2094 | while (strncmp (reply, "qSymbol:", 8) == 0) | |||
2095 | { | |||
2096 | tmp = &reply[8]; | |||
2097 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |||
2098 | msg[end] = '\0'; | |||
2099 | sym = lookup_minimal_symbol (msg, NULL((void*)0), NULL((void*)0)); | |||
2100 | if (sym == NULL((void*)0)) | |||
2101 | sprintf (msg, "qSymbol::%s", &reply[8]); | |||
2102 | else | |||
2103 | sprintf (msg, "qSymbol:%s:%s", | |||
2104 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)(sym)->ginfo.value.address), | |||
2105 | &reply[8]); | |||
2106 | putpkt (msg); | |||
2107 | getpkt (reply, (rs->remote_packet_size), 0); | |||
2108 | } | |||
2109 | } | |||
2110 | ||||
2111 | static struct serial * | |||
2112 | remote_serial_open (char *name) | |||
2113 | { | |||
2114 | static int udp_warning = 0; | |||
2115 | ||||
2116 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |||
2117 | of in ser-tcp.c, because it is the remote protocol assuming that the | |||
2118 | serial connection is reliable and not the serial connection promising | |||
2119 | to be. */ | |||
2120 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |||
2121 | { | |||
2122 | warning ("The remote protocol may be unreliable over UDP."); | |||
2123 | warning ("Some events may be lost, rendering further debugging " | |||
2124 | "impossible."); | |||
2125 | udp_warning = 1; | |||
2126 | } | |||
2127 | ||||
2128 | return serial_open (name); | |||
2129 | } | |||
2130 | ||||
2131 | static void | |||
2132 | remote_open_1 (char *name, int from_tty, struct target_ops *target, | |||
2133 | int extended_p, int async_p) | |||
2134 | { | |||
2135 | int ex; | |||
2136 | struct remote_state *rs = get_remote_state (); | |||
2137 | if (name == 0) | |||
2138 | error ("To open a remote debug connection, you need to specify what\n" | |||
2139 | "serial device is attached to the remote system\n" | |||
2140 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |||
2141 | ||||
2142 | /* See FIXME above */ | |||
2143 | if (!async_p) | |||
2144 | wait_forever_enabled_p = 1; | |||
2145 | ||||
2146 | reopen_exec_file (); | |||
2147 | reread_symbols (); | |||
2148 | ||||
2149 | target_preopen (from_tty); | |||
2150 | ||||
2151 | unpush_target (target); | |||
2152 | ||||
2153 | remote_desc = remote_serial_open (name); | |||
2154 | if (!remote_desc) | |||
2155 | perror_with_name (name); | |||
2156 | ||||
2157 | if (baud_rate != -1) | |||
2158 | { | |||
2159 | if (serial_setbaudrate (remote_desc, baud_rate)) | |||
2160 | { | |||
2161 | /* The requested speed could not be set. Error out to | |||
2162 | top level after closing remote_desc. Take care to | |||
2163 | set remote_desc to NULL to avoid closing remote_desc | |||
2164 | more than once. */ | |||
2165 | serial_close (remote_desc); | |||
2166 | remote_desc = NULL((void*)0); | |||
2167 | perror_with_name (name); | |||
2168 | } | |||
2169 | } | |||
2170 | ||||
2171 | serial_raw (remote_desc); | |||
2172 | ||||
2173 | /* If there is something sitting in the buffer we might take it as a | |||
2174 | response to a command, which would be bad. */ | |||
2175 | serial_flush_input (remote_desc); | |||
2176 | ||||
2177 | if (from_tty) | |||
2178 | { | |||
2179 | puts_filtered ("Remote debugging using "); | |||
2180 | puts_filtered (name); | |||
2181 | puts_filtered ("\n"); | |||
2182 | } | |||
2183 | push_target (target); /* Switch to using remote target now */ | |||
2184 | ||||
2185 | init_all_packet_configs (); | |||
2186 | ||||
2187 | general_thread = -2; | |||
2188 | continue_thread = -2; | |||
2189 | ||||
2190 | /* Probe for ability to use "ThreadInfo" query, as required. */ | |||
2191 | use_threadinfo_query = 1; | |||
2192 | use_threadextra_query = 1; | |||
2193 | ||||
2194 | /* Without this, some commands which require an active target (such | |||
2195 | as kill) won't work. This variable serves (at least) double duty | |||
2196 | as both the pid of the target process (if it has such), and as a | |||
2197 | flag indicating that a target is active. These functions should | |||
2198 | be split out into seperate variables, especially since GDB will | |||
2199 | someday have a notion of debugging several processes. */ | |||
2200 | ||||
2201 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID42000); | |||
2202 | ||||
2203 | if (async_p) | |||
2204 | { | |||
2205 | /* With this target we start out by owning the terminal. */ | |||
2206 | remote_async_terminal_ours_p = 1; | |||
2207 | ||||
2208 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |||
2209 | assumed that the target is already ready and able to respond to | |||
2210 | requests. Unfortunately remote_start_remote() eventually calls | |||
2211 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |||
2212 | around this. Eventually a mechanism that allows | |||
2213 | wait_for_inferior() to expect/get timeouts will be | |||
2214 | implemented. */ | |||
2215 | wait_forever_enabled_p = 0; | |||
2216 | } | |||
2217 | ||||
2218 | #ifdef SOLIB_CREATE_INFERIOR_HOOK | |||
2219 | /* First delete any symbols previously loaded from shared libraries. */ | |||
2220 | no_shared_libraries (NULL((void*)0), 0); | |||
2221 | #endif | |||
2222 | ||||
2223 | /* Start the remote connection. If error() or QUIT, discard this | |||
2224 | target (we'd otherwise be in an inconsistent state) and then | |||
2225 | propogate the error on up the exception chain. This ensures that | |||
2226 | the caller doesn't stumble along blindly assuming that the | |||
2227 | function succeeded. The CLI doesn't have this problem but other | |||
2228 | UI's, such as MI do. | |||
2229 | ||||
2230 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |||
2231 | this function should return an error indication letting the | |||
2232 | caller restore the previous state. Unfortunately the command | |||
2233 | ``target remote'' is directly wired to this function making that | |||
2234 | impossible. On a positive note, the CLI side of this problem has | |||
2235 | been fixed - the function set_cmd_context() makes it possible for | |||
2236 | all the ``target ....'' commands to share a common callback | |||
2237 | function. See cli-dump.c. */ | |||
2238 | ex = catch_exceptions (uiout, | |||
2239 | remote_start_remote, NULL((void*)0), | |||
2240 | "Couldn't establish connection to remote" | |||
2241 | " target\n", | |||
2242 | RETURN_MASK_ALL((1 << (int)(-RETURN_QUIT)) | (1 << (int)(-RETURN_ERROR )))); | |||
2243 | if (ex < 0) | |||
2244 | { | |||
2245 | pop_target (); | |||
2246 | if (async_p) | |||
2247 | wait_forever_enabled_p = 1; | |||
2248 | throw_exception (ex); | |||
2249 | } | |||
2250 | ||||
2251 | if (async_p) | |||
2252 | wait_forever_enabled_p = 1; | |||
2253 | ||||
2254 | if (extended_p) | |||
2255 | { | |||
2256 | /* Tell the remote that we are using the extended protocol. */ | |||
2257 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
2258 | putpkt ("!"); | |||
2259 | getpkt (buf, (rs->remote_packet_size), 0); | |||
2260 | } | |||
2261 | #ifdef SOLIB_CREATE_INFERIOR_HOOK | |||
2262 | /* FIXME: need a master target_open vector from which all | |||
2263 | remote_opens can be called, so that stuff like this can | |||
2264 | go there. Failing that, the following code must be copied | |||
2265 | to the open function for any remote target that wants to | |||
2266 | support svr4 shared libraries. */ | |||
2267 | ||||
2268 | /* Set up to detect and load shared libraries. */ | |||
2269 | if (exec_bfd) /* No use without an exec file. */ | |||
2270 | { | |||
2271 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid))solib_create_inferior_hook(); | |||
2272 | remote_check_symbols (symfile_objfile); | |||
2273 | } | |||
2274 | #endif | |||
2275 | } | |||
2276 | ||||
2277 | /* This takes a program previously attached to and detaches it. After | |||
2278 | this is done, GDB can be used to debug some other program. We | |||
2279 | better not have left any breakpoints in the target program or it'll | |||
2280 | die when it hits one. */ | |||
2281 | ||||
2282 | static void | |||
2283 | remote_detach (char *args, int from_tty) | |||
2284 | { | |||
2285 | struct remote_state *rs = get_remote_state (); | |||
2286 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
2287 | ||||
2288 | if (args) | |||
2289 | error ("Argument given to \"detach\" when remotely debugging."); | |||
2290 | ||||
2291 | /* Tell the remote target to detach. */ | |||
2292 | strcpy (buf, "D"); | |||
2293 | remote_send (buf, (rs->remote_packet_size)); | |||
2294 | ||||
2295 | /* Unregister the file descriptor from the event loop. */ | |||
2296 | if (target_is_async_p ()(current_target.to_is_async_p())) | |||
2297 | serial_async (remote_desc, NULL((void*)0), 0); | |||
2298 | ||||
2299 | target_mourn_inferior ()(*current_target.to_mourn_inferior) (); | |||
2300 | if (from_tty) | |||
2301 | puts_filtered ("Ending remote debugging.\n"); | |||
2302 | } | |||
2303 | ||||
2304 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ | |||
2305 | ||||
2306 | static void | |||
2307 | remote_disconnect (char *args, int from_tty) | |||
2308 | { | |||
2309 | struct remote_state *rs = get_remote_state (); | |||
2310 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
2311 | ||||
2312 | if (args) | |||
2313 | error ("Argument given to \"detach\" when remotely debugging."); | |||
2314 | ||||
2315 | /* Unregister the file descriptor from the event loop. */ | |||
2316 | if (target_is_async_p ()(current_target.to_is_async_p())) | |||
2317 | serial_async (remote_desc, NULL((void*)0), 0); | |||
2318 | ||||
2319 | target_mourn_inferior ()(*current_target.to_mourn_inferior) (); | |||
2320 | if (from_tty) | |||
2321 | puts_filtered ("Ending remote debugging.\n"); | |||
2322 | } | |||
2323 | ||||
2324 | /* Convert hex digit A to a number. */ | |||
2325 | ||||
2326 | static int | |||
2327 | fromhex (int a) | |||
2328 | { | |||
2329 | if (a >= '0' && a <= '9') | |||
2330 | return a - '0'; | |||
2331 | else if (a >= 'a' && a <= 'f') | |||
2332 | return a - 'a' + 10; | |||
2333 | else if (a >= 'A' && a <= 'F') | |||
2334 | return a - 'A' + 10; | |||
2335 | else | |||
2336 | error ("Reply contains invalid hex digit %d", a); | |||
2337 | } | |||
2338 | ||||
2339 | static int | |||
2340 | hex2bin (const char *hex, char *bin, int count) | |||
2341 | { | |||
2342 | int i; | |||
2343 | ||||
2344 | for (i = 0; i < count; i++) | |||
2345 | { | |||
2346 | if (hex[0] == 0 || hex[1] == 0) | |||
2347 | { | |||
2348 | /* Hex string is short, or of uneven length. | |||
2349 | Return the count that has been converted so far. */ | |||
2350 | return i; | |||
2351 | } | |||
2352 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |||
2353 | hex += 2; | |||
2354 | } | |||
2355 | return i; | |||
2356 | } | |||
2357 | ||||
2358 | /* Convert number NIB to a hex digit. */ | |||
2359 | ||||
2360 | static int | |||
2361 | tohex (int nib) | |||
2362 | { | |||
2363 | if (nib < 10) | |||
2364 | return '0' + nib; | |||
2365 | else | |||
2366 | return 'a' + nib - 10; | |||
2367 | } | |||
2368 | ||||
2369 | static int | |||
2370 | bin2hex (const char *bin, char *hex, int count) | |||
2371 | { | |||
2372 | int i; | |||
2373 | /* May use a length, or a nul-terminated string as input. */ | |||
2374 | if (count == 0) | |||
2375 | count = strlen (bin); | |||
2376 | ||||
2377 | for (i = 0; i < count; i++) | |||
2378 | { | |||
2379 | *hex++ = tohex ((*bin >> 4) & 0xf); | |||
2380 | *hex++ = tohex (*bin++ & 0xf); | |||
2381 | } | |||
2382 | *hex = 0; | |||
2383 | return i; | |||
2384 | } | |||
2385 | ||||
2386 | /* Check for the availability of vCont. This function should also check | |||
2387 | the response. */ | |||
2388 | ||||
2389 | static void | |||
2390 | remote_vcont_probe (struct remote_state *rs, char *buf) | |||
2391 | { | |||
2392 | strcpy (buf, "vCont?"); | |||
2393 | putpkt (buf); | |||
2394 | getpkt (buf, rs->remote_packet_size, 0); | |||
2395 | ||||
2396 | /* Make sure that the features we assume are supported. */ | |||
2397 | if (strncmp (buf, "vCont", 5) == 0) | |||
2398 | { | |||
2399 | char *p = &buf[5]; | |||
2400 | int support_s, support_S, support_c, support_C; | |||
2401 | ||||
2402 | support_s = 0; | |||
2403 | support_S = 0; | |||
2404 | support_c = 0; | |||
2405 | support_C = 0; | |||
2406 | while (p && *p == ';') | |||
2407 | { | |||
2408 | p++; | |||
2409 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |||
2410 | support_s = 1; | |||
2411 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |||
2412 | support_S = 1; | |||
2413 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |||
2414 | support_c = 1; | |||
2415 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |||
2416 | support_C = 1; | |||
2417 | ||||
2418 | p = strchr (p, ';'); | |||
2419 | } | |||
2420 | ||||
2421 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing | |||
2422 | BUF will make packet_ok disable the packet. */ | |||
2423 | if (!support_s || !support_S || !support_c || !support_C) | |||
2424 | buf[0] = 0; | |||
2425 | } | |||
2426 | ||||
2427 | packet_ok (buf, &remote_protocol_vcont); | |||
2428 | } | |||
2429 | ||||
2430 | /* Resume the remote inferior by using a "vCont" packet. The thread | |||
2431 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |||
2432 | resumed thread should be single-stepped and/or signalled. If PTID's | |||
2433 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |||
2434 | signalled is given in the global INFERIOR_PTID. This function returns | |||
2435 | non-zero iff it resumes the inferior. | |||
2436 | ||||
2437 | This function issues a strict subset of all possible vCont commands at the | |||
2438 | moment. */ | |||
2439 | ||||
2440 | static int | |||
2441 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |||
2442 | { | |||
2443 | struct remote_state *rs = get_remote_state (); | |||
2444 | int pid = PIDGET (ptid)(ptid_get_pid (ptid)); | |||
2445 | char *buf = NULL((void*)0), *outbuf; | |||
2446 | struct cleanup *old_cleanup; | |||
2447 | ||||
2448 | buf = xmalloc (rs->remote_packet_size); | |||
2449 | old_cleanup = make_cleanup (xfree, buf); | |||
2450 | ||||
2451 | if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN) | |||
2452 | remote_vcont_probe (rs, buf); | |||
2453 | ||||
2454 | if (remote_protocol_vcont.support == PACKET_DISABLE) | |||
2455 | { | |||
2456 | do_cleanups (old_cleanup); | |||
2457 | return 0; | |||
2458 | } | |||
2459 | ||||
2460 | /* If we could generate a wider range of packets, we'd have to worry | |||
2461 | about overflowing BUF. Should there be a generic | |||
2462 | "multi-part-packet" packet? */ | |||
2463 | ||||
2464 | if (PIDGET (inferior_ptid)(ptid_get_pid (inferior_ptid)) == MAGIC_NULL_PID42000) | |||
2465 | { | |||
2466 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we | |||
2467 | don't have any PID numbers the inferior will understand. Make sure | |||
2468 | to only send forms that do not specify a PID. */ | |||
2469 | if (step && siggnal != TARGET_SIGNAL_0) | |||
2470 | outbuf = xstrprintf ("vCont;S%02x", siggnal); | |||
2471 | else if (step) | |||
2472 | outbuf = xstrprintf ("vCont;s"); | |||
2473 | else if (siggnal != TARGET_SIGNAL_0) | |||
2474 | outbuf = xstrprintf ("vCont;C%02x", siggnal); | |||
2475 | else | |||
2476 | outbuf = xstrprintf ("vCont;c"); | |||
2477 | } | |||
2478 | else if (pid == -1) | |||
2479 | { | |||
2480 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |||
2481 | if (step && siggnal != TARGET_SIGNAL_0) | |||
2482 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, | |||
2483 | PIDGET (inferior_ptid)(ptid_get_pid (inferior_ptid))); | |||
2484 | else if (step) | |||
2485 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)(ptid_get_pid (inferior_ptid))); | |||
2486 | else if (siggnal != TARGET_SIGNAL_0) | |||
2487 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, | |||
2488 | PIDGET (inferior_ptid)(ptid_get_pid (inferior_ptid))); | |||
2489 | else | |||
2490 | outbuf = xstrprintf ("vCont;c"); | |||
2491 | } | |||
2492 | else | |||
2493 | { | |||
2494 | /* Scheduler locking; resume only PTID. */ | |||
2495 | if (step && siggnal != TARGET_SIGNAL_0) | |||
2496 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); | |||
2497 | else if (step) | |||
2498 | outbuf = xstrprintf ("vCont;s:%x", pid); | |||
2499 | else if (siggnal != TARGET_SIGNAL_0) | |||
2500 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); | |||
2501 | else | |||
2502 | outbuf = xstrprintf ("vCont;c:%x", pid); | |||
2503 | } | |||
2504 | ||||
2505 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size)((void) ((outbuf && strlen (outbuf) < rs->remote_packet_size ) ? 0 : (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/remote.c" , 2505, "%s: Assertion `%s' failed.", __PRETTY_FUNCTION__, "outbuf && strlen (outbuf) < rs->remote_packet_size" ), 0))); | |||
2506 | make_cleanup (xfree, outbuf); | |||
2507 | ||||
2508 | putpkt (outbuf); | |||
2509 | ||||
2510 | do_cleanups (old_cleanup); | |||
2511 | ||||
2512 | return 1; | |||
2513 | } | |||
2514 | ||||
2515 | /* Tell the remote machine to resume. */ | |||
2516 | ||||
2517 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |||
2518 | ||||
2519 | static int last_sent_step; | |||
2520 | ||||
2521 | static void | |||
2522 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) | |||
2523 | { | |||
2524 | struct remote_state *rs = get_remote_state (); | |||
2525 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
2526 | int pid = PIDGET (ptid)(ptid_get_pid (ptid)); | |||
2527 | char *p; | |||
2528 | ||||
2529 | last_sent_signal = siggnal; | |||
2530 | last_sent_step = step; | |||
2531 | ||||
2532 | /* A hook for when we need to do something at the last moment before | |||
2533 | resumption. */ | |||
2534 | if (deprecated_target_resume_hook) | |||
2535 | (*deprecated_target_resume_hook) (); | |||
2536 | ||||
2537 | /* The vCont packet doesn't need to specify threads via Hc. */ | |||
2538 | if (remote_vcont_resume (ptid, step, siggnal)) | |||
2539 | return; | |||
2540 | ||||
2541 | /* All other supported resume packets do use Hc, so call set_thread. */ | |||
2542 | if (pid == -1) | |||
2543 | set_thread (0, 0); /* run any thread */ | |||
2544 | else | |||
2545 | set_thread (pid, 0); /* run this thread */ | |||
2546 | ||||
2547 | if (siggnal != TARGET_SIGNAL_0) | |||
2548 | { | |||
2549 | buf[0] = step ? 'S' : 'C'; | |||
2550 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |||
2551 | buf[2] = tohex (((int) siggnal) & 0xf); | |||
2552 | buf[3] = '\0'; | |||
2553 | } | |||
2554 | else | |||
2555 | strcpy (buf, step ? "s" : "c"); | |||
2556 | ||||
2557 | putpkt (buf); | |||
2558 | } | |||
2559 | ||||
2560 | /* Same as remote_resume, but with async support. */ | |||
2561 | static void | |||
2562 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |||
2563 | { | |||
2564 | remote_resume (ptid, step, siggnal); | |||
2565 | ||||
2566 | /* We are about to start executing the inferior, let's register it | |||
2567 | with the event loop. NOTE: this is the one place where all the | |||
2568 | execution commands end up. We could alternatively do this in each | |||
2569 | of the execution commands in infcmd.c.*/ | |||
2570 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |||
2571 | into infcmd.c in order to allow inferior function calls to work | |||
2572 | NOT asynchronously. */ | |||
2573 | if (target_can_async_p ()(current_target.to_can_async_p ())) | |||
2574 | target_async (inferior_event_handler, 0)(current_target.to_async((inferior_event_handler), (0))); | |||
2575 | /* Tell the world that the target is now executing. */ | |||
2576 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |||
2577 | this? Instead, should the client of target just assume (for | |||
2578 | async targets) that the target is going to start executing? Is | |||
2579 | this information already found in the continuation block? */ | |||
2580 | if (target_is_async_p ()(current_target.to_is_async_p())) | |||
2581 | target_executing = 1; | |||
2582 | } | |||
2583 | ||||
2584 | ||||
2585 | /* Set up the signal handler for SIGINT, while the target is | |||
2586 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |||
2587 | static void | |||
2588 | initialize_sigint_signal_handler (void) | |||
2589 | { | |||
2590 | sigint_remote_token = | |||
2591 | create_async_signal_handler (async_remote_interrupt, NULL((void*)0)); | |||
2592 | signal (SIGINT2, handle_remote_sigint); | |||
2593 | } | |||
2594 | ||||
2595 | /* Signal handler for SIGINT, while the target is executing. */ | |||
2596 | static void | |||
2597 | handle_remote_sigint (int sig) | |||
2598 | { | |||
2599 | signal (sig, handle_remote_sigint_twice); | |||
2600 | sigint_remote_twice_token = | |||
2601 | create_async_signal_handler (async_remote_interrupt_twice, NULL((void*)0)); | |||
2602 | mark_async_signal_handler_wrapper (sigint_remote_token); | |||
2603 | } | |||
2604 | ||||
2605 | /* Signal handler for SIGINT, installed after SIGINT has already been | |||
2606 | sent once. It will take effect the second time that the user sends | |||
2607 | a ^C. */ | |||
2608 | static void | |||
2609 | handle_remote_sigint_twice (int sig) | |||
2610 | { | |||
2611 | signal (sig, handle_sigint); | |||
2612 | sigint_remote_twice_token = | |||
2613 | create_async_signal_handler (inferior_event_handler_wrapper, NULL((void*)0)); | |||
2614 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); | |||
2615 | } | |||
2616 | ||||
2617 | /* Perform the real interruption of the target execution, in response | |||
2618 | to a ^C. */ | |||
2619 | static void | |||
2620 | async_remote_interrupt (gdb_client_data arg) | |||
2621 | { | |||
2622 | if (remote_debug) | |||
2623 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |||
2624 | ||||
2625 | target_stopcurrent_target.to_stop (); | |||
2626 | } | |||
2627 | ||||
2628 | /* Perform interrupt, if the first attempt did not succeed. Just give | |||
2629 | up on the target alltogether. */ | |||
2630 | void | |||
2631 | async_remote_interrupt_twice (gdb_client_data arg) | |||
2632 | { | |||
2633 | if (remote_debug) | |||
2634 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |||
2635 | /* Do something only if the target was not killed by the previous | |||
2636 | cntl-C. */ | |||
2637 | if (target_executing) | |||
2638 | { | |||
2639 | interrupt_query (); | |||
2640 | signal (SIGINT2, handle_remote_sigint); | |||
2641 | } | |||
2642 | } | |||
2643 | ||||
2644 | /* Reinstall the usual SIGINT handlers, after the target has | |||
2645 | stopped. */ | |||
2646 | static void | |||
2647 | cleanup_sigint_signal_handler (void *dummy) | |||
2648 | { | |||
2649 | signal (SIGINT2, handle_sigint); | |||
2650 | if (sigint_remote_twice_token) | |||
2651 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); | |||
2652 | if (sigint_remote_token) | |||
2653 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); | |||
2654 | } | |||
2655 | ||||
2656 | /* Send ^C to target to halt it. Target will respond, and send us a | |||
2657 | packet. */ | |||
2658 | static void (*ofunc) (int); | |||
2659 | ||||
2660 | /* The command line interface's stop routine. This function is installed | |||
2661 | as a signal handler for SIGINT. The first time a user requests a | |||
2662 | stop, we call remote_stop to send a break or ^C. If there is no | |||
2663 | response from the target (it didn't stop when the user requested it), | |||
2664 | we ask the user if he'd like to detach from the target. */ | |||
2665 | static void | |||
2666 | remote_interrupt (int signo) | |||
2667 | { | |||
2668 | /* If this doesn't work, try more severe steps. */ | |||
2669 | signal (signo, remote_interrupt_twice); | |||
2670 | ||||
2671 | if (remote_debug) | |||
2672 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |||
2673 | ||||
2674 | target_stopcurrent_target.to_stop (); | |||
2675 | } | |||
2676 | ||||
2677 | /* The user typed ^C twice. */ | |||
2678 | ||||
2679 | static void | |||
2680 | remote_interrupt_twice (int signo) | |||
2681 | { | |||
2682 | signal (signo, ofunc); | |||
2683 | interrupt_query (); | |||
2684 | signal (signo, remote_interrupt); | |||
2685 | } | |||
2686 | ||||
2687 | /* This is the generic stop called via the target vector. When a target | |||
2688 | interrupt is requested, either by the command line or the GUI, we | |||
2689 | will eventually end up here. */ | |||
2690 | static void | |||
2691 | remote_stop (void) | |||
2692 | { | |||
2693 | /* Send a break or a ^C, depending on user preference. */ | |||
2694 | if (remote_debug) | |||
2695 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); | |||
2696 | ||||
2697 | if (remote_break) | |||
2698 | serial_send_break (remote_desc); | |||
2699 | else | |||
2700 | serial_write (remote_desc, "\003", 1); | |||
2701 | } | |||
2702 | ||||
2703 | /* Ask the user what to do when an interrupt is received. */ | |||
2704 | ||||
2705 | static void | |||
2706 | interrupt_query (void) | |||
2707 | { | |||
2708 | target_terminal_ours ()(*current_target.to_terminal_ours) (); | |||
2709 | ||||
2710 | if (query ("Interrupted while waiting for the program.\n\ | |||
2711 | Give up (and stop debugging it)? ")) | |||
2712 | { | |||
2713 | target_mourn_inferior ()(*current_target.to_mourn_inferior) (); | |||
2714 | throw_exception (RETURN_QUIT); | |||
2715 | } | |||
2716 | ||||
2717 | target_terminal_inferior ()(*current_target.to_terminal_inferior) (); | |||
2718 | } | |||
2719 | ||||
2720 | /* Enable/disable target terminal ownership. Most targets can use | |||
2721 | terminal groups to control terminal ownership. Remote targets are | |||
2722 | different in that explicit transfer of ownership to/from GDB/target | |||
2723 | is required. */ | |||
2724 | ||||
2725 | static void | |||
2726 | remote_async_terminal_inferior (void) | |||
2727 | { | |||
2728 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |||
2729 | sync_execution here. This function should only be called when | |||
2730 | GDB is resuming the inferior in the forground. A background | |||
2731 | resume (``run&'') should leave GDB in control of the terminal and | |||
2732 | consequently should not call this code. */ | |||
2733 | if (!sync_execution) | |||
2734 | return; | |||
2735 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |||
2736 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |||
2737 | to an asynchronous target with a synchronous command calls this | |||
2738 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |||
2739 | stops trying to transfer the terminal to the target when it | |||
2740 | shouldn't this guard can go away. */ | |||
2741 | if (!remote_async_terminal_ours_p) | |||
2742 | return; | |||
2743 | delete_file_handler (input_fd); | |||
2744 | remote_async_terminal_ours_p = 0; | |||
2745 | initialize_sigint_signal_handler (); | |||
2746 | /* NOTE: At this point we could also register our selves as the | |||
2747 | recipient of all input. Any characters typed could then be | |||
2748 | passed on down to the target. */ | |||
2749 | } | |||
2750 | ||||
2751 | static void | |||
2752 | remote_async_terminal_ours (void) | |||
2753 | { | |||
2754 | /* See FIXME in remote_async_terminal_inferior. */ | |||
2755 | if (!sync_execution) | |||
2756 | return; | |||
2757 | /* See FIXME in remote_async_terminal_inferior. */ | |||
2758 | if (remote_async_terminal_ours_p) | |||
2759 | return; | |||
2760 | cleanup_sigint_signal_handler (NULL((void*)0)); | |||
2761 | add_file_handler (input_fd, stdin_event_handler, 0); | |||
2762 | remote_async_terminal_ours_p = 1; | |||
2763 | } | |||
2764 | ||||
2765 | /* If nonzero, ignore the next kill. */ | |||
2766 | ||||
2767 | int kill_kludge; | |||
2768 | ||||
2769 | void | |||
2770 | remote_console_output (char *msg) | |||
2771 | { | |||
2772 | char *p; | |||
2773 | ||||
2774 | for (p = msg; p[0] && p[1]; p += 2) | |||
2775 | { | |||
2776 | char tb[2]; | |||
2777 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |||
2778 | tb[0] = c; | |||
2779 | tb[1] = 0; | |||
2780 | fputs_unfiltered (tb, gdb_stdtarg); | |||
2781 | } | |||
2782 | gdb_flush (gdb_stdtarg); | |||
2783 | } | |||
2784 | ||||
2785 | /* Wait until the remote machine stops, then return, | |||
2786 | storing status in STATUS just as `wait' would. | |||
2787 | Returns "pid", which in the case of a multi-threaded | |||
2788 | remote OS, is the thread-id. */ | |||
2789 | ||||
2790 | static ptid_t | |||
2791 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |||
2792 | { | |||
2793 | struct remote_state *rs = get_remote_state (); | |||
2794 | unsigned char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
2795 | ULONGESTunsigned long thread_num = -1; | |||
2796 | ULONGESTunsigned long addr; | |||
2797 | ||||
2798 | status->kind = TARGET_WAITKIND_EXITED; | |||
2799 | status->value.integer = 0; | |||
2800 | ||||
2801 | while (1) | |||
2802 | { | |||
2803 | unsigned char *p; | |||
2804 | ||||
2805 | ofunc = signal (SIGINT2, remote_interrupt); | |||
2806 | getpkt (buf, (rs->remote_packet_size), 1); | |||
2807 | signal (SIGINT2, ofunc); | |||
2808 | ||||
2809 | /* This is a hook for when we need to do something (perhaps the | |||
2810 | collection of trace data) every time the target stops. */ | |||
2811 | if (deprecated_target_wait_loop_hook) | |||
2812 | (*deprecated_target_wait_loop_hook) (); | |||
2813 | ||||
2814 | remote_stopped_by_watchpoint_p = 0; | |||
2815 | ||||
2816 | switch (buf[0]) | |||
2817 | { | |||
2818 | case 'E': /* Error of some sort */ | |||
2819 | warning ("Remote failure reply: %s", buf); | |||
2820 | continue; | |||
2821 | case 'F': /* File-I/O request */ | |||
2822 | remote_fileio_request (buf); | |||
2823 | continue; | |||
2824 | case 'T': /* Status with PC, SP, FP, ... */ | |||
2825 | { | |||
2826 | int i; | |||
2827 | char regs[MAX_REGISTER_SIZE]; | |||
2828 | ||||
2829 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |||
2830 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |||
2831 | ss = signal number | |||
2832 | n... = register number | |||
2833 | r... = register contents | |||
2834 | */ | |||
2835 | p = &buf[3]; /* after Txx */ | |||
2836 | ||||
2837 | while (*p) | |||
2838 | { | |||
2839 | unsigned char *p1; | |||
2840 | char *p_temp; | |||
2841 | int fieldsize; | |||
2842 | LONGESTlong pnum = 0; | |||
2843 | ||||
2844 | /* If the packet contains a register number save it in pnum | |||
2845 | and set p1 to point to the character following it. | |||
2846 | Otherwise p1 points to p. */ | |||
2847 | ||||
2848 | /* If this packet is an awatch packet, don't parse the 'a' | |||
2849 | as a register number. */ | |||
2850 | ||||
2851 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |||
2852 | { | |||
2853 | /* Read the ``P'' register number. */ | |||
2854 | pnum = strtol (p, &p_temp, 16); | |||
2855 | p1 = (unsigned char *) p_temp; | |||
2856 | } | |||
2857 | else | |||
2858 | p1 = p; | |||
2859 | ||||
2860 | if (p1 == p) /* No register number present here */ | |||
2861 | { | |||
2862 | p1 = (unsigned char *) strchr (p, ':'); | |||
2863 | if (p1 == NULL((void*)0)) | |||
2864 | warning ("Malformed packet(a) (missing colon): %s\n\ | |||
2865 | Packet: '%s'\n", | |||
2866 | p, buf); | |||
2867 | if (strncmp (p, "thread", p1 - p) == 0) | |||
2868 | { | |||
2869 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |||
2870 | record_currthread (thread_num); | |||
2871 | p = (unsigned char *) p_temp; | |||
2872 | } | |||
2873 | else if ((strncmp (p, "watch", p1 - p) == 0) | |||
2874 | || (strncmp (p, "rwatch", p1 - p) == 0) | |||
2875 | || (strncmp (p, "awatch", p1 - p) == 0)) | |||
2876 | { | |||
2877 | remote_stopped_by_watchpoint_p = 1; | |||
2878 | p = unpack_varlen_hex (++p1, &addr); | |||
2879 | remote_watch_data_address = (CORE_ADDR)addr; | |||
2880 | } | |||
2881 | else | |||
2882 | { | |||
2883 | /* Silently skip unknown optional info. */ | |||
2884 | p_temp = strchr (p1 + 1, ';'); | |||
2885 | if (p_temp) | |||
2886 | p = (unsigned char *) p_temp; | |||
2887 | } | |||
2888 | } | |||
2889 | else | |||
2890 | { | |||
2891 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); | |||
2892 | p = p1; | |||
2893 | ||||
2894 | if (*p++ != ':') | |||
2895 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", | |||
2896 | p, buf); | |||
2897 | ||||
2898 | if (reg == NULL((void*)0)) | |||
2899 | error ("Remote sent bad register number %s: %s\nPacket: '%s'\n", | |||
2900 | phex_nz (pnum, 0), p, buf); | |||
2901 | ||||
2902 | fieldsize = hex2bin (p, regs, register_size (current_gdbarch, reg->regnum)); | |||
2903 | p += 2 * fieldsize; | |||
2904 | if (fieldsize < register_size (current_gdbarch, reg->regnum)) | |||
2905 | warning ("Remote reply is too short: %s", buf); | |||
2906 | regcache_raw_supply (current_regcache, reg->regnum, regs); | |||
2907 | } | |||
2908 | ||||
2909 | if (*p++ != ';') | |||
2910 | error ("Remote register badly formatted: %s\nhere: %s", buf, p); | |||
2911 | } | |||
2912 | } | |||
2913 | /* fall through */ | |||
2914 | case 'S': /* Old style status, just signal only */ | |||
2915 | status->kind = TARGET_WAITKIND_STOPPED; | |||
2916 | status->value.sig = (enum target_signal) | |||
2917 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |||
2918 | ||||
2919 | if (buf[3] == 'p') | |||
2920 | { | |||
2921 | thread_num = strtol ((const char *) &buf[4], NULL((void*)0), 16); | |||
2922 | record_currthread (thread_num); | |||
2923 | } | |||
2924 | goto got_status; | |||
2925 | case 'W': /* Target exited */ | |||
2926 | { | |||
2927 | /* The remote process exited. */ | |||
2928 | status->kind = TARGET_WAITKIND_EXITED; | |||
2929 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |||
2930 | goto got_status; | |||
2931 | } | |||
2932 | case 'X': | |||
2933 | status->kind = TARGET_WAITKIND_SIGNALLED; | |||
2934 | status->value.sig = (enum target_signal) | |||
2935 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |||
2936 | kill_kludge = 1; | |||
2937 | ||||
2938 | goto got_status; | |||
2939 | case 'O': /* Console output */ | |||
2940 | remote_console_output (buf + 1); | |||
2941 | continue; | |||
2942 | case '\0': | |||
2943 | if (last_sent_signal != TARGET_SIGNAL_0) | |||
2944 | { | |||
2945 | /* Zero length reply means that we tried 'S' or 'C' and | |||
2946 | the remote system doesn't support it. */ | |||
2947 | target_terminal_ours_for_output ()(*current_target.to_terminal_ours_for_output) (); | |||
2948 | printf_filtered | |||
2949 | ("Can't send signals to this remote system. %s not sent.\n", | |||
2950 | target_signal_to_name (last_sent_signal)); | |||
2951 | last_sent_signal = TARGET_SIGNAL_0; | |||
2952 | target_terminal_inferior ()(*current_target.to_terminal_inferior) (); | |||
2953 | ||||
2954 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |||
2955 | putpkt ((char *) buf); | |||
2956 | continue; | |||
2957 | } | |||
2958 | /* else fallthrough */ | |||
2959 | default: | |||
2960 | warning ("Invalid remote reply: %s", buf); | |||
2961 | continue; | |||
2962 | } | |||
2963 | } | |||
2964 | got_status: | |||
2965 | if (thread_num != -1) | |||
2966 | { | |||
2967 | return pid_to_ptid (thread_num); | |||
2968 | } | |||
2969 | return inferior_ptid; | |||
2970 | } | |||
2971 | ||||
2972 | /* Async version of remote_wait. */ | |||
2973 | static ptid_t | |||
2974 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |||
2975 | { | |||
2976 | struct remote_state *rs = get_remote_state (); | |||
2977 | unsigned char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
2978 | ULONGESTunsigned long thread_num = -1; | |||
2979 | ULONGESTunsigned long addr; | |||
2980 | ||||
2981 | status->kind = TARGET_WAITKIND_EXITED; | |||
2982 | status->value.integer = 0; | |||
2983 | ||||
2984 | remote_stopped_by_watchpoint_p = 0; | |||
2985 | ||||
2986 | while (1) | |||
2987 | { | |||
2988 | unsigned char *p; | |||
2989 | ||||
2990 | if (!target_is_async_p ()(current_target.to_is_async_p())) | |||
2991 | ofunc = signal (SIGINT2, remote_interrupt); | |||
2992 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |||
2993 | _never_ wait for ever -> test on target_is_async_p(). | |||
2994 | However, before we do that we need to ensure that the caller | |||
2995 | knows how to take the target into/out of async mode. */ | |||
2996 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); | |||
2997 | if (!target_is_async_p ()(current_target.to_is_async_p())) | |||
2998 | signal (SIGINT2, ofunc); | |||
2999 | ||||
3000 | /* This is a hook for when we need to do something (perhaps the | |||
3001 | collection of trace data) every time the target stops. */ | |||
3002 | if (deprecated_target_wait_loop_hook) | |||
3003 | (*deprecated_target_wait_loop_hook) (); | |||
3004 | ||||
3005 | switch (buf[0]) | |||
3006 | { | |||
3007 | case 'E': /* Error of some sort */ | |||
3008 | warning ("Remote failure reply: %s", buf); | |||
3009 | continue; | |||
3010 | case 'F': /* File-I/O request */ | |||
3011 | remote_fileio_request (buf); | |||
3012 | continue; | |||
3013 | case 'T': /* Status with PC, SP, FP, ... */ | |||
3014 | { | |||
3015 | int i; | |||
3016 | char regs[MAX_REGISTER_SIZE]; | |||
3017 | ||||
3018 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |||
3019 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |||
3020 | ss = signal number | |||
3021 | n... = register number | |||
3022 | r... = register contents | |||
3023 | */ | |||
3024 | p = &buf[3]; /* after Txx */ | |||
3025 | ||||
3026 | while (*p) | |||
3027 | { | |||
3028 | unsigned char *p1; | |||
3029 | char *p_temp; | |||
3030 | int fieldsize; | |||
3031 | long pnum = 0; | |||
3032 | ||||
3033 | /* If the packet contains a register number, save it in pnum | |||
3034 | and set p1 to point to the character following it. | |||
3035 | Otherwise p1 points to p. */ | |||
3036 | ||||
3037 | /* If this packet is an awatch packet, don't parse the 'a' | |||
3038 | as a register number. */ | |||
3039 | ||||
3040 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) | |||
3041 | { | |||
3042 | /* Read the register number. */ | |||
3043 | pnum = strtol (p, &p_temp, 16); | |||
3044 | p1 = (unsigned char *) p_temp; | |||
3045 | } | |||
3046 | else | |||
3047 | p1 = p; | |||
3048 | ||||
3049 | if (p1 == p) /* No register number present here */ | |||
3050 | { | |||
3051 | p1 = (unsigned char *) strchr (p, ':'); | |||
3052 | if (p1 == NULL((void*)0)) | |||
3053 | error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n", | |||
3054 | p, buf); | |||
3055 | if (strncmp (p, "thread", p1 - p) == 0) | |||
3056 | { | |||
3057 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |||
3058 | record_currthread (thread_num); | |||
3059 | p = (unsigned char *) p_temp; | |||
3060 | } | |||
3061 | else if ((strncmp (p, "watch", p1 - p) == 0) | |||
3062 | || (strncmp (p, "rwatch", p1 - p) == 0) | |||
3063 | || (strncmp (p, "awatch", p1 - p) == 0)) | |||
3064 | { | |||
3065 | remote_stopped_by_watchpoint_p = 1; | |||
3066 | p = unpack_varlen_hex (++p1, &addr); | |||
3067 | remote_watch_data_address = (CORE_ADDR)addr; | |||
3068 | } | |||
3069 | else | |||
3070 | { | |||
3071 | /* Silently skip unknown optional info. */ | |||
3072 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |||
3073 | if (p_temp) | |||
3074 | p = p_temp; | |||
3075 | } | |||
3076 | } | |||
3077 | ||||
3078 | else | |||
3079 | { | |||
3080 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); | |||
3081 | p = p1; | |||
3082 | if (*p++ != ':') | |||
3083 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", | |||
3084 | p, buf); | |||
3085 | ||||
3086 | if (reg == NULL((void*)0)) | |||
3087 | error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n", | |||
3088 | pnum, p, buf); | |||
3089 | ||||
3090 | fieldsize = hex2bin (p, regs, register_size (current_gdbarch, reg->regnum)); | |||
3091 | p += 2 * fieldsize; | |||
3092 | if (fieldsize < register_size (current_gdbarch, reg->regnum)) | |||
3093 | warning ("Remote reply is too short: %s", buf); | |||
3094 | regcache_raw_supply (current_regcache, reg->regnum, regs); | |||
3095 | } | |||
3096 | ||||
3097 | if (*p++ != ';') | |||
3098 | error ("Remote register badly formatted: %s\nhere: %s", | |||
3099 | buf, p); | |||
3100 | } | |||
3101 | } | |||
3102 | /* fall through */ | |||
3103 | case 'S': /* Old style status, just signal only */ | |||
3104 | status->kind = TARGET_WAITKIND_STOPPED; | |||
3105 | status->value.sig = (enum target_signal) | |||
3106 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |||
3107 | ||||
3108 | if (buf[3] == 'p') | |||
3109 | { | |||
3110 | thread_num = strtol ((const char *) &buf[4], NULL((void*)0), 16); | |||
3111 | record_currthread (thread_num); | |||
3112 | } | |||
3113 | goto got_status; | |||
3114 | case 'W': /* Target exited */ | |||
3115 | { | |||
3116 | /* The remote process exited. */ | |||
3117 | status->kind = TARGET_WAITKIND_EXITED; | |||
3118 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |||
3119 | goto got_status; | |||
3120 | } | |||
3121 | case 'X': | |||
3122 | status->kind = TARGET_WAITKIND_SIGNALLED; | |||
3123 | status->value.sig = (enum target_signal) | |||
3124 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |||
3125 | kill_kludge = 1; | |||
3126 | ||||
3127 | goto got_status; | |||
3128 | case 'O': /* Console output */ | |||
3129 | remote_console_output (buf + 1); | |||
3130 | /* Return immediately to the event loop. The event loop will | |||
3131 | still be waiting on the inferior afterwards. */ | |||
3132 | status->kind = TARGET_WAITKIND_IGNORE; | |||
3133 | goto got_status; | |||
3134 | case '\0': | |||
3135 | if (last_sent_signal != TARGET_SIGNAL_0) | |||
3136 | { | |||
3137 | /* Zero length reply means that we tried 'S' or 'C' and | |||
3138 | the remote system doesn't support it. */ | |||
3139 | target_terminal_ours_for_output ()(*current_target.to_terminal_ours_for_output) (); | |||
3140 | printf_filtered | |||
3141 | ("Can't send signals to this remote system. %s not sent.\n", | |||
3142 | target_signal_to_name (last_sent_signal)); | |||
3143 | last_sent_signal = TARGET_SIGNAL_0; | |||
3144 | target_terminal_inferior ()(*current_target.to_terminal_inferior) (); | |||
3145 | ||||
3146 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |||
3147 | putpkt ((char *) buf); | |||
3148 | continue; | |||
3149 | } | |||
3150 | /* else fallthrough */ | |||
3151 | default: | |||
3152 | warning ("Invalid remote reply: %s", buf); | |||
3153 | continue; | |||
3154 | } | |||
3155 | } | |||
3156 | got_status: | |||
3157 | if (thread_num != -1) | |||
3158 | { | |||
3159 | return pid_to_ptid (thread_num); | |||
3160 | } | |||
3161 | return inferior_ptid; | |||
3162 | } | |||
3163 | ||||
3164 | /* Number of bytes of registers this stub implements. */ | |||
3165 | ||||
3166 | static int register_bytes_found; | |||
3167 | ||||
3168 | /* Read the remote registers into the block REGS. */ | |||
3169 | /* Currently we just read all the registers, so we don't use regnum. */ | |||
3170 | ||||
3171 | static int | |||
3172 | fetch_register_using_p (int regnum) | |||
3173 | { | |||
3174 | struct remote_state *rs = get_remote_state (); | |||
3175 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size), *p; | |||
3176 | char regp[MAX_REGISTER_SIZE]; | |||
3177 | int i; | |||
3178 | ||||
3179 | p = buf; | |||
3180 | *p++ = 'p'; | |||
3181 | p += hexnumstr (p, regnum); | |||
3182 | *p++ = '\0'; | |||
3183 | remote_send (buf, rs->remote_packet_size); | |||
3184 | if (buf[0] != 0 && buf[0] != 'E') { | |||
3185 | p = buf; | |||
3186 | i = 0; | |||
3187 | while (p[0] != 0) { | |||
3188 | if (p[1] == 0) { | |||
3189 | error("fetch_register_using_p: early buf termination"); | |||
3190 | return 0; | |||
3191 | } | |||
3192 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |||
3193 | p += 2; | |||
3194 | } | |||
3195 | regcache_raw_supply (current_regcache, regnum, regp); | |||
3196 | return 1; | |||
3197 | } | |||
3198 | ||||
3199 | return 0; | |||
3200 | } | |||
3201 | ||||
3202 | static void | |||
3203 | remote_fetch_registers (int regnum) | |||
3204 | { | |||
3205 | struct remote_state *rs = get_remote_state (); | |||
3206 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
3207 | int i; | |||
3208 | char *p; | |||
3209 | char *regs = alloca (rs->sizeof_g_packet)__builtin_alloca(rs->sizeof_g_packet); | |||
3210 | ||||
3211 | set_thread (PIDGET (inferior_ptid)(ptid_get_pid (inferior_ptid)), 1); | |||
3212 | ||||
3213 | if (regnum >= 0) | |||
3214 | { | |||
3215 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |||
3216 | gdb_assert (reg != NULL)((void) ((reg != ((void*)0)) ? 0 : (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/remote.c" , 3216, "%s: Assertion `%s' failed.", __PRETTY_FUNCTION__, "reg != NULL" ), 0))); | |||
3217 | if (!reg->in_g_packet) | |||
3218 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__3218, | |||
3219 | "Attempt to fetch a non G-packet register when this " | |||
3220 | "remote.c does not support the p-packet."); | |||
3221 | } | |||
3222 | switch (remote_protocol_p.support) | |||
3223 | { | |||
3224 | case PACKET_DISABLE: | |||
3225 | break; | |||
3226 | case PACKET_ENABLE: | |||
3227 | if (fetch_register_using_p (regnum)) | |||
3228 | return; | |||
3229 | else | |||
3230 | error ("Protocol error: p packet not recognized by stub"); | |||
3231 | case PACKET_SUPPORT_UNKNOWN: | |||
3232 | if (fetch_register_using_p (regnum)) | |||
3233 | { | |||
3234 | /* The stub recognized the 'p' packet. Remember this. */ | |||
3235 | remote_protocol_p.support = PACKET_ENABLE; | |||
3236 | return; | |||
3237 | } | |||
3238 | else | |||
3239 | { | |||
3240 | /* The stub does not support the 'P' packet. Use 'G' | |||
3241 | instead, and don't try using 'P' in the future (it | |||
3242 | will just waste our time). */ | |||
3243 | remote_protocol_p.support = PACKET_DISABLE; | |||
3244 | break; | |||
3245 | } | |||
3246 | } | |||
3247 | ||||
3248 | sprintf (buf, "g"); | |||
3249 | remote_send (buf, (rs->remote_packet_size)); | |||
3250 | ||||
3251 | /* Save the size of the packet sent to us by the target. Its used | |||
3252 | as a heuristic when determining the max size of packets that the | |||
3253 | target can safely receive. */ | |||
3254 | if ((rs->actual_register_packet_size) == 0) | |||
3255 | (rs->actual_register_packet_size) = strlen (buf); | |||
3256 | ||||
3257 | /* Unimplemented registers read as all bits zero. */ | |||
3258 | memset (regs, 0, rs->sizeof_g_packet); | |||
3259 | ||||
3260 | /* We can get out of synch in various cases. If the first character | |||
3261 | in the buffer is not a hex character, assume that has happened | |||
3262 | and try to fetch another packet to read. */ | |||
3263 | while ((buf[0] < '0' || buf[0] > '9') | |||
3264 | && (buf[0] < 'a' || buf[0] > 'f') | |||
3265 | && buf[0] != 'x') /* New: unavailable register value */ | |||
3266 | { | |||
3267 | if (remote_debug) | |||
3268 | fprintf_unfiltered (gdb_stdlog, | |||
3269 | "Bad register packet; fetching a new packet\n"); | |||
3270 | getpkt (buf, (rs->remote_packet_size), 0); | |||
3271 | } | |||
3272 | ||||
3273 | /* Reply describes registers byte by byte, each byte encoded as two | |||
3274 | hex characters. Suck them all up, then supply them to the | |||
3275 | register cacheing/storage mechanism. */ | |||
3276 | ||||
3277 | p = buf; | |||
3278 | for (i = 0; i < rs->sizeof_g_packet; i++) | |||
3279 | { | |||
3280 | if (p[0] == 0) | |||
3281 | break; | |||
3282 | if (p[1] == 0) | |||
3283 | { | |||
3284 | warning ("Remote reply is of odd length: %s", buf); | |||
3285 | /* Don't change register_bytes_found in this case, and don't | |||
3286 | print a second warning. */ | |||
3287 | goto supply_them; | |||
3288 | } | |||
3289 | if (p[0] == 'x' && p[1] == 'x') | |||
3290 | regs[i] = 0; /* 'x' */ | |||
3291 | else | |||
3292 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |||
3293 | p += 2; | |||
3294 | } | |||
3295 | ||||
3296 | if (i != register_bytes_found) | |||
3297 | { | |||
3298 | register_bytes_found = i; | |||
3299 | if (REGISTER_BYTES_OK_P ()(gdbarch_register_bytes_ok_p (current_gdbarch)) | |||
3300 | && !REGISTER_BYTES_OK (i)(gdbarch_register_bytes_ok (current_gdbarch, i))) | |||
3301 | warning ("Remote reply is too short: %s", buf); | |||
3302 | } | |||
3303 | ||||
3304 | supply_them: | |||
3305 | { | |||
3306 | int i; | |||
3307 | for (i = 0; i < NUM_REGS(gdbarch_num_regs (current_gdbarch)) + NUM_PSEUDO_REGS(gdbarch_num_pseudo_regs (current_gdbarch)); i++) | |||
3308 | { | |||
3309 | struct packet_reg *r = &rs->regs[i]; | |||
3310 | if (r->in_g_packet) | |||
3311 | { | |||
3312 | if (r->offset * 2 >= strlen (buf)) | |||
3313 | /* A short packet that didn't include the register's | |||
3314 | value, this implies that the register is zero (and | |||
3315 | not that the register is unavailable). Supply that | |||
3316 | zero value. */ | |||
3317 | regcache_raw_supply (current_regcache, r->regnum, NULL((void*)0)); | |||
3318 | else if (buf[r->offset * 2] == 'x') | |||
3319 | { | |||
3320 | gdb_assert (r->offset * 2 < strlen (buf))((void) ((r->offset * 2 < strlen (buf)) ? 0 : (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/remote.c", 3320, "%s: Assertion `%s' failed." , __PRETTY_FUNCTION__, "r->offset * 2 < strlen (buf)"), 0))); | |||
3321 | /* The register isn't available, mark it as such (at | |||
3322 | the same time setting the value to zero). */ | |||
3323 | regcache_raw_supply (current_regcache, r->regnum, NULL((void*)0)); | |||
3324 | set_register_cached (i, -1); | |||
3325 | } | |||
3326 | else | |||
3327 | regcache_raw_supply (current_regcache, r->regnum, | |||
3328 | regs + r->offset); | |||
3329 | } | |||
3330 | } | |||
3331 | } | |||
3332 | } | |||
3333 | ||||
3334 | /* Prepare to store registers. Since we may send them all (using a | |||
3335 | 'G' request), we have to read out the ones we don't want to change | |||
3336 | first. */ | |||
3337 | ||||
3338 | static void | |||
3339 | remote_prepare_to_store (void) | |||
3340 | { | |||
3341 | struct remote_state *rs = get_remote_state (); | |||
3342 | int i; | |||
3343 | char buf[MAX_REGISTER_SIZE]; | |||
3344 | ||||
3345 | /* Make sure the entire registers array is valid. */ | |||
3346 | switch (remote_protocol_P.support) | |||
3347 | { | |||
3348 | case PACKET_DISABLE: | |||
3349 | case PACKET_SUPPORT_UNKNOWN: | |||
3350 | /* Make sure all the necessary registers are cached. */ | |||
3351 | for (i = 0; i < NUM_REGS(gdbarch_num_regs (current_gdbarch)); i++) | |||
3352 | if (rs->regs[i].in_g_packet) | |||
3353 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |||
3354 | break; | |||
3355 | case PACKET_ENABLE: | |||
3356 | break; | |||
3357 | } | |||
3358 | } | |||
3359 | ||||
3360 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF | |||
3361 | packet was not recognized. */ | |||
3362 | ||||
3363 | static int | |||
3364 | store_register_using_P (int regnum) | |||
3365 | { | |||
3366 | struct remote_state *rs = get_remote_state (); | |||
3367 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |||
3368 | /* Try storing a single register. */ | |||
3369 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
3370 | char regp[MAX_REGISTER_SIZE]; | |||
3371 | char *p; | |||
3372 | int i; | |||
3373 | ||||
3374 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); | |||
3375 | p = buf + strlen (buf); | |||
3376 | regcache_raw_collect (current_regcache, reg->regnum, regp); | |||
3377 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); | |||
3378 | remote_send (buf, rs->remote_packet_size); | |||
3379 | ||||
3380 | return buf[0] != '\0'; | |||
3381 | } | |||
3382 | ||||
3383 | ||||
3384 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |||
3385 | of the register cache buffer. FIXME: ignores errors. */ | |||
3386 | ||||
3387 | static void | |||
3388 | remote_store_registers (int regnum) | |||
3389 | { | |||
3390 | struct remote_state *rs = get_remote_state (); | |||
3391 | char *buf; | |||
3392 | char *regs; | |||
3393 | int i; | |||
3394 | char *p; | |||
3395 | ||||
3396 | set_thread (PIDGET (inferior_ptid)(ptid_get_pid (inferior_ptid)), 1); | |||
3397 | ||||
3398 | if (regnum >= 0) | |||
3399 | { | |||
3400 | switch (remote_protocol_P.support) | |||
3401 | { | |||
3402 | case PACKET_DISABLE: | |||
3403 | break; | |||
3404 | case PACKET_ENABLE: | |||
3405 | if (store_register_using_P (regnum)) | |||
3406 | return; | |||
3407 | else | |||
3408 | error ("Protocol error: P packet not recognized by stub"); | |||
3409 | case PACKET_SUPPORT_UNKNOWN: | |||
3410 | if (store_register_using_P (regnum)) | |||
3411 | { | |||
3412 | /* The stub recognized the 'P' packet. Remember this. */ | |||
3413 | remote_protocol_P.support = PACKET_ENABLE; | |||
3414 | return; | |||
3415 | } | |||
3416 | else | |||
3417 | { | |||
3418 | /* The stub does not support the 'P' packet. Use 'G' | |||
3419 | instead, and don't try using 'P' in the future (it | |||
3420 | will just waste our time). */ | |||
3421 | remote_protocol_P.support = PACKET_DISABLE; | |||
3422 | break; | |||
3423 | } | |||
3424 | } | |||
3425 | } | |||
3426 | ||||
3427 | /* Extract all the registers in the regcache copying them into a | |||
3428 | local buffer. */ | |||
3429 | { | |||
3430 | int i; | |||
3431 | regs = alloca (rs->sizeof_g_packet)__builtin_alloca(rs->sizeof_g_packet); | |||
3432 | memset (regs, 0, rs->sizeof_g_packet); | |||
3433 | for (i = 0; i < NUM_REGS(gdbarch_num_regs (current_gdbarch)) + NUM_PSEUDO_REGS(gdbarch_num_pseudo_regs (current_gdbarch)); i++) | |||
3434 | { | |||
3435 | struct packet_reg *r = &rs->regs[i]; | |||
3436 | if (r->in_g_packet) | |||
3437 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); | |||
3438 | } | |||
3439 | } | |||
3440 | ||||
3441 | /* Command describes registers byte by byte, | |||
3442 | each byte encoded as two hex characters. */ | |||
3443 | buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
3444 | p = buf; | |||
3445 | *p++ = 'G'; | |||
3446 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ | |||
3447 | bin2hex (regs, p, register_bytes_found); | |||
3448 | remote_send (buf, (rs->remote_packet_size)); | |||
3449 | } | |||
3450 | ||||
3451 | ||||
3452 | /* Return the number of hex digits in num. */ | |||
3453 | ||||
3454 | static int | |||
3455 | hexnumlen (ULONGESTunsigned long num) | |||
3456 | { | |||
3457 | int i; | |||
3458 | ||||
3459 | for (i = 0; num != 0; i++) | |||
3460 | num >>= 4; | |||
3461 | ||||
3462 | return max (i, 1)((i) > (1) ? (i) : (1)); | |||
3463 | } | |||
3464 | ||||
3465 | /* Set BUF to the minimum number of hex digits representing NUM. */ | |||
3466 | ||||
3467 | static int | |||
3468 | hexnumstr (char *buf, ULONGESTunsigned long num) | |||
3469 | { | |||
3470 | int len = hexnumlen (num); | |||
3471 | return hexnumnstr (buf, num, len); | |||
3472 | } | |||
3473 | ||||
3474 | ||||
3475 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ | |||
3476 | ||||
3477 | static int | |||
3478 | hexnumnstr (char *buf, ULONGESTunsigned long num, int width) | |||
3479 | { | |||
3480 | int i; | |||
3481 | ||||
3482 | buf[width] = '\0'; | |||
3483 | ||||
3484 | for (i = width - 1; i >= 0; i--) | |||
3485 | { | |||
3486 | buf[i] = "0123456789abcdef"[(num & 0xf)]; | |||
3487 | num >>= 4; | |||
3488 | } | |||
3489 | ||||
3490 | return width; | |||
3491 | } | |||
3492 | ||||
3493 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |||
3494 | ||||
3495 | static CORE_ADDR | |||
3496 | remote_address_masked (CORE_ADDR addr) | |||
3497 | { | |||
3498 | if (remote_address_size > 0 | |||
3499 | && remote_address_size < (sizeof (ULONGESTunsigned long) * 8)) | |||
3500 | { | |||
3501 | /* Only create a mask when that mask can safely be constructed | |||
3502 | in a ULONGEST variable. */ | |||
3503 | ULONGESTunsigned long mask = 1; | |||
3504 | mask = (mask << remote_address_size) - 1; | |||
3505 | addr &= mask; | |||
3506 | } | |||
3507 | return addr; | |||
3508 | } | |||
3509 | ||||
3510 | /* Determine whether the remote target supports binary downloading. | |||
3511 | This is accomplished by sending a no-op memory write of zero length | |||
3512 | to the target at the specified address. It does not suffice to send | |||
3513 | the whole packet, since many stubs strip the eighth bit and subsequently | |||
3514 | compute a wrong checksum, which causes real havoc with remote_write_bytes. | |||
3515 | ||||
3516 | NOTE: This can still lose if the serial line is not eight-bit | |||
3517 | clean. In cases like this, the user should clear "remote | |||
3518 | X-packet". */ | |||
3519 | ||||
3520 | static void | |||
3521 | check_binary_download (CORE_ADDR addr) | |||
3522 | { | |||
3523 | struct remote_state *rs = get_remote_state (); | |||
3524 | switch (remote_protocol_binary_download.support) | |||
3525 | { | |||
3526 | case PACKET_DISABLE: | |||
3527 | break; | |||
3528 | case PACKET_ENABLE: | |||
3529 | break; | |||
3530 | case PACKET_SUPPORT_UNKNOWN: | |||
3531 | { | |||
3532 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
3533 | char *p; | |||
3534 | ||||
3535 | p = buf; | |||
3536 | *p++ = 'X'; | |||
3537 | p += hexnumstr (p, (ULONGESTunsigned long) addr); | |||
3538 | *p++ = ','; | |||
3539 | p += hexnumstr (p, (ULONGESTunsigned long) 0); | |||
3540 | *p++ = ':'; | |||
3541 | *p = '\0'; | |||
3542 | ||||
3543 | putpkt_binary (buf, (int) (p - buf)); | |||
3544 | getpkt (buf, (rs->remote_packet_size), 0); | |||
3545 | ||||
3546 | if (buf[0] == '\0') | |||
3547 | { | |||
3548 | if (remote_debug) | |||
3549 | fprintf_unfiltered (gdb_stdlog, | |||
3550 | "binary downloading NOT suppported by target\n"); | |||
3551 | remote_protocol_binary_download.support = PACKET_DISABLE; | |||
3552 | } | |||
3553 | else | |||
3554 | { | |||
3555 | if (remote_debug) | |||
3556 | fprintf_unfiltered (gdb_stdlog, | |||
3557 | "binary downloading suppported by target\n"); | |||
3558 | remote_protocol_binary_download.support = PACKET_ENABLE; | |||
3559 | } | |||
3560 | break; | |||
3561 | } | |||
3562 | } | |||
3563 | } | |||
3564 | ||||
3565 | /* Write memory data directly to the remote machine. | |||
3566 | This does not inform the data cache; the data cache uses this. | |||
3567 | MEMADDR is the address in the remote memory space. | |||
3568 | MYADDR is the address of the buffer in our space. | |||
3569 | LEN is the number of bytes. | |||
3570 | ||||
3571 | Returns number of bytes transferred, or 0 (setting errno) for | |||
3572 | error. Only transfer a single packet. */ | |||
3573 | ||||
3574 | int | |||
3575 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) | |||
3576 | { | |||
3577 | unsigned char *buf; | |||
3578 | unsigned char *p; | |||
3579 | unsigned char *plen; | |||
3580 | long sizeof_buf; | |||
3581 | int plenlen; | |||
3582 | int todo; | |||
3583 | int nr_bytes; | |||
3584 | int payload_size; | |||
3585 | unsigned char *payload_start; | |||
3586 | ||||
3587 | /* Verify that the target can support a binary download. */ | |||
3588 | check_binary_download (memaddr); | |||
3589 | ||||
3590 | /* Compute the size, and then allocate space for the largest | |||
3591 | possible packet. Include space for an extra trailing NUL. */ | |||
3592 | sizeof_buf = get_memory_write_packet_size () + 1; | |||
3593 | buf = alloca (sizeof_buf)__builtin_alloca(sizeof_buf); | |||
3594 | ||||
3595 | /* Compute the size of the actual payload by subtracting out the | |||
3596 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ | |||
3597 | payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN") | |||
3598 | + hexnumlen (memaddr) | |||
3599 | + hexnumlen (len))); | |||
3600 | ||||
3601 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ | |||
3602 | ||||
3603 | /* Append "[XM]". Compute a best guess of the number of bytes | |||
3604 | actually transfered. */ | |||
3605 | p = buf; | |||
3606 | switch (remote_protocol_binary_download.support) | |||
3607 | { | |||
3608 | case PACKET_ENABLE: | |||
3609 | *p++ = 'X'; | |||
3610 | /* Best guess at number of bytes that will fit. */ | |||
3611 | todo = min (len, payload_size)((len) < (payload_size) ? (len) : (payload_size)); | |||
3612 | break; | |||
3613 | case PACKET_DISABLE: | |||
3614 | *p++ = 'M'; | |||
3615 | /* num bytes that will fit */ | |||
3616 | todo = min (len, payload_size / 2)((len) < (payload_size / 2) ? (len) : (payload_size / 2)); | |||
3617 | break; | |||
3618 | case PACKET_SUPPORT_UNKNOWN: | |||
3619 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__3619, | |||
3620 | "remote_write_bytes: bad internal state"); | |||
3621 | default: | |||
3622 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__3622, "bad switch"); | |||
3623 | } | |||
3624 | ||||
3625 | /* Append "<memaddr>". */ | |||
3626 | memaddr = remote_address_masked (memaddr); | |||
3627 | p += hexnumstr (p, (ULONGESTunsigned long) memaddr); | |||
3628 | ||||
3629 | /* Append ",". */ | |||
3630 | *p++ = ','; | |||
3631 | ||||
3632 | /* Append <len>. Retain the location/size of <len>. It may need to | |||
3633 | be adjusted once the packet body has been created. */ | |||
3634 | plen = p; | |||
3635 | plenlen = hexnumstr (p, (ULONGESTunsigned long) todo); | |||
3636 | p += plenlen; | |||
3637 | ||||
3638 | /* Append ":". */ | |||
3639 | *p++ = ':'; | |||
3640 | *p = '\0'; | |||
3641 | ||||
3642 | /* Append the packet body. */ | |||
3643 | payload_start = p; | |||
3644 | switch (remote_protocol_binary_download.support) | |||
3645 | { | |||
3646 | case PACKET_ENABLE: | |||
3647 | /* Binary mode. Send target system values byte by byte, in | |||
3648 | increasing byte addresses. Only escape certain critical | |||
3649 | characters. */ | |||
3650 | for (nr_bytes = 0; | |||
3651 | (nr_bytes < todo) && (p - payload_start) < payload_size; | |||
3652 | nr_bytes++) | |||
3653 | { | |||
3654 | switch (myaddr[nr_bytes] & 0xff) | |||
3655 | { | |||
3656 | case '$': | |||
3657 | case '#': | |||
3658 | case 0x7d: | |||
3659 | /* These must be escaped */ | |||
3660 | *p++ = 0x7d; | |||
3661 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |||
3662 | break; | |||
3663 | default: | |||
3664 | *p++ = myaddr[nr_bytes] & 0xff; | |||
3665 | break; | |||
3666 | } | |||
3667 | } | |||
3668 | if (nr_bytes < todo) | |||
3669 | { | |||
3670 | /* Escape chars have filled up the buffer prematurely, | |||
3671 | and we have actually sent fewer bytes than planned. | |||
3672 | Fix-up the length field of the packet. Use the same | |||
3673 | number of characters as before. */ | |||
3674 | plen += hexnumnstr (plen, (ULONGESTunsigned long) nr_bytes, plenlen); | |||
3675 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |||
3676 | } | |||
3677 | break; | |||
3678 | case PACKET_DISABLE: | |||
3679 | /* Normal mode: Send target system values byte by byte, in | |||
3680 | increasing byte addresses. Each byte is encoded as a two hex | |||
3681 | value. */ | |||
3682 | nr_bytes = bin2hex (myaddr, p, todo); | |||
3683 | p += 2 * nr_bytes; | |||
3684 | break; | |||
3685 | case PACKET_SUPPORT_UNKNOWN: | |||
3686 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__3686, | |||
3687 | "remote_write_bytes: bad internal state"); | |||
3688 | default: | |||
3689 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__3689, "bad switch"); | |||
3690 | } | |||
3691 | ||||
3692 | putpkt_binary (buf, (int) (p - buf)); | |||
3693 | getpkt (buf, sizeof_buf, 0); | |||
3694 | ||||
3695 | if (buf[0] == 'E') | |||
3696 | { | |||
3697 | /* There is no correspondance between what the remote protocol | |||
3698 | uses for errors and errno codes. We would like a cleaner way | |||
3699 | of representing errors (big enough to include errno codes, | |||
3700 | bfd_error codes, and others). But for now just return EIO. */ | |||
3701 | errno(*__errno()) = EIO5; | |||
3702 | return 0; | |||
3703 | } | |||
3704 | ||||
3705 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |||
3706 | bytes than we'd planned. */ | |||
3707 | return nr_bytes; | |||
3708 | } | |||
3709 | ||||
3710 | /* Read memory data directly from the remote machine. | |||
3711 | This does not use the data cache; the data cache uses this. | |||
3712 | MEMADDR is the address in the remote memory space. | |||
3713 | MYADDR is the address of the buffer in our space. | |||
3714 | LEN is the number of bytes. | |||
3715 | ||||
3716 | Returns number of bytes transferred, or 0 for error. */ | |||
3717 | ||||
3718 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other | |||
3719 | remote targets) shouldn't attempt to read the entire buffer. | |||
3720 | Instead it should read a single packet worth of data and then | |||
3721 | return the byte size of that packet to the caller. The caller (its | |||
3722 | caller and its callers caller ;-) already contains code for | |||
3723 | handling partial reads. */ | |||
3724 | ||||
3725 | int | |||
3726 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) | |||
3727 | { | |||
3728 | char *buf; | |||
3729 | int max_buf_size; /* Max size of packet output buffer */ | |||
3730 | long sizeof_buf; | |||
3731 | int origlen; | |||
3732 | ||||
3733 | /* Create a buffer big enough for this packet. */ | |||
3734 | max_buf_size = get_memory_read_packet_size (); | |||
3735 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ | |||
3736 | buf = alloca (sizeof_buf)__builtin_alloca(sizeof_buf); | |||
3737 | ||||
3738 | origlen = len; | |||
3739 | while (len > 0) | |||
3740 | { | |||
3741 | char *p; | |||
3742 | int todo; | |||
3743 | int i; | |||
3744 | ||||
3745 | todo = min (len, max_buf_size / 2)((len) < (max_buf_size / 2) ? (len) : (max_buf_size / 2)); /* num bytes that will fit */ | |||
3746 | ||||
3747 | /* construct "m"<memaddr>","<len>" */ | |||
3748 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |||
3749 | memaddr = remote_address_masked (memaddr); | |||
3750 | p = buf; | |||
3751 | *p++ = 'm'; | |||
3752 | p += hexnumstr (p, (ULONGESTunsigned long) memaddr); | |||
3753 | *p++ = ','; | |||
3754 | p += hexnumstr (p, (ULONGESTunsigned long) todo); | |||
3755 | *p = '\0'; | |||
3756 | ||||
3757 | putpkt (buf); | |||
3758 | getpkt (buf, sizeof_buf, 0); | |||
3759 | ||||
3760 | if (buf[0] == 'E' | |||
3761 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |||
3762 | && buf[3] == '\0') | |||
3763 | { | |||
3764 | /* There is no correspondance between what the remote protocol uses | |||
3765 | for errors and errno codes. We would like a cleaner way of | |||
3766 | representing errors (big enough to include errno codes, bfd_error | |||
3767 | codes, and others). But for now just return EIO. */ | |||
3768 | errno(*__errno()) = EIO5; | |||
3769 | return 0; | |||
3770 | } | |||
3771 | ||||
3772 | /* Reply describes memory byte by byte, | |||
3773 | each byte encoded as two hex characters. */ | |||
3774 | ||||
3775 | p = buf; | |||
3776 | if ((i = hex2bin (p, myaddr, todo)) < todo) | |||
3777 | { | |||
3778 | /* Reply is short. This means that we were able to read | |||
3779 | only part of what we wanted to. */ | |||
3780 | return i + (origlen - len); | |||
3781 | } | |||
3782 | myaddr += todo; | |||
3783 | memaddr += todo; | |||
3784 | len -= todo; | |||
3785 | } | |||
3786 | return origlen; | |||
3787 | } | |||
3788 | ||||
3789 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |||
3790 | transferring to or from debugger address BUFFER. Write to inferior if | |||
3791 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |||
3792 | for error. TARGET is unused. */ | |||
3793 | ||||
3794 | static int | |||
3795 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, | |||
3796 | int should_write, struct mem_attrib *attrib, | |||
3797 | struct target_ops *target) | |||
3798 | { | |||
3799 | CORE_ADDR targ_addr; | |||
3800 | int targ_len; | |||
3801 | int res; | |||
3802 | ||||
3803 | /* Should this be the selected frame? */ | |||
3804 | gdbarch_remote_translate_xfer_address (current_gdbarch, current_regcache, | |||
3805 | mem_addr, mem_len, | |||
3806 | &targ_addr, &targ_len); | |||
3807 | if (targ_len <= 0) | |||
3808 | return 0; | |||
3809 | ||||
3810 | if (should_write) | |||
3811 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |||
3812 | else | |||
3813 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |||
3814 | ||||
3815 | return res; | |||
3816 | } | |||
3817 | ||||
3818 | static void | |||
3819 | remote_files_info (struct target_ops *ignore) | |||
3820 | { | |||
3821 | puts_filtered ("Debugging a target over a serial line.\n"); | |||
3822 | } | |||
3823 | ||||
3824 | /* Stuff for dealing with the packets which are part of this protocol. | |||
3825 | See comment at top of file for details. */ | |||
3826 | ||||
3827 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |||
3828 | ||||
3829 | static int | |||
3830 | readchar (int timeout) | |||
3831 | { | |||
3832 | int ch; | |||
3833 | ||||
3834 | ch = serial_readchar (remote_desc, timeout); | |||
3835 | ||||
3836 | if (ch >= 0) | |||
3837 | return (ch & 0x7f); | |||
3838 | ||||
3839 | switch ((enum serial_rc) ch) | |||
3840 | { | |||
3841 | case SERIAL_EOF: | |||
3842 | target_mourn_inferior ()(*current_target.to_mourn_inferior) (); | |||
3843 | error ("Remote connection closed"); | |||
3844 | /* no return */ | |||
3845 | case SERIAL_ERROR: | |||
3846 | perror_with_name ("Remote communication error"); | |||
3847 | /* no return */ | |||
3848 | case SERIAL_TIMEOUT: | |||
3849 | break; | |||
3850 | } | |||
3851 | return ch; | |||
3852 | } | |||
3853 | ||||
3854 | /* Send the command in BUF to the remote machine, and read the reply | |||
3855 | into BUF. Report an error if we get an error reply. */ | |||
3856 | ||||
3857 | static void | |||
3858 | remote_send (char *buf, | |||
3859 | long sizeof_buf) | |||
3860 | { | |||
3861 | putpkt (buf); | |||
3862 | getpkt (buf, sizeof_buf, 0); | |||
3863 | ||||
3864 | if (buf[0] == 'E') | |||
3865 | error ("Remote failure reply: %s", buf); | |||
3866 | } | |||
3867 | ||||
3868 | /* Display a null-terminated packet on stdout, for debugging, using C | |||
3869 | string notation. */ | |||
3870 | ||||
3871 | static void | |||
3872 | print_packet (char *buf) | |||
3873 | { | |||
3874 | puts_filtered ("\""); | |||
3875 | fputstr_filtered (buf, '"', gdb_stdout); | |||
3876 | puts_filtered ("\""); | |||
3877 | } | |||
3878 | ||||
3879 | int | |||
3880 | putpkt (char *buf) | |||
3881 | { | |||
3882 | return putpkt_binary (buf, strlen (buf)); | |||
3883 | } | |||
3884 | ||||
3885 | /* Send a packet to the remote machine, with error checking. The data | |||
3886 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 | |||
3887 | to account for the $, # and checksum, and for a possible /0 if we are | |||
3888 | debugging (remote_debug) and want to print the sent packet as a string */ | |||
3889 | ||||
3890 | static int | |||
3891 | putpkt_binary (char *buf, int cnt) | |||
3892 | { | |||
3893 | struct remote_state *rs = get_remote_state (); | |||
3894 | int i; | |||
3895 | unsigned char csum = 0; | |||
3896 | char *buf2 = alloca (cnt + 6)__builtin_alloca(cnt + 6); | |||
3897 | long sizeof_junkbuf = (rs->remote_packet_size); | |||
3898 | char *junkbuf = alloca (sizeof_junkbuf)__builtin_alloca(sizeof_junkbuf); | |||
3899 | ||||
3900 | int ch; | |||
3901 | int tcount = 0; | |||
3902 | char *p; | |||
3903 | ||||
3904 | /* Copy the packet into buffer BUF2, encapsulating it | |||
3905 | and giving it a checksum. */ | |||
3906 | ||||
3907 | p = buf2; | |||
3908 | *p++ = '$'; | |||
3909 | ||||
3910 | for (i = 0; i < cnt; i++) | |||
3911 | { | |||
3912 | csum += buf[i]; | |||
3913 | *p++ = buf[i]; | |||
3914 | } | |||
3915 | *p++ = '#'; | |||
3916 | *p++ = tohex ((csum >> 4) & 0xf); | |||
3917 | *p++ = tohex (csum & 0xf); | |||
3918 | ||||
3919 | /* Send it over and over until we get a positive ack. */ | |||
3920 | ||||
3921 | while (1) | |||
3922 | { | |||
3923 | int started_error_output = 0; | |||
3924 | ||||
3925 | if (remote_debug) | |||
3926 | { | |||
3927 | *p = '\0'; | |||
3928 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); | |||
3929 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |||
3930 | fprintf_unfiltered (gdb_stdlog, "..."); | |||
3931 | gdb_flush (gdb_stdlog); | |||
3932 | } | |||
3933 | if (serial_write (remote_desc, buf2, p - buf2)) | |||
3934 | perror_with_name ("putpkt: write failed"); | |||
3935 | ||||
3936 | /* read until either a timeout occurs (-2) or '+' is read */ | |||
3937 | while (1) | |||
3938 | { | |||
3939 | ch = readchar (remote_timeout); | |||
3940 | ||||
3941 | if (remote_debug) | |||
3942 | { | |||
3943 | switch (ch) | |||
3944 | { | |||
3945 | case '+': | |||
3946 | case '-': | |||
3947 | case SERIAL_TIMEOUT: | |||
3948 | case '$': | |||
3949 | if (started_error_output) | |||
3950 | { | |||
3951 | putchar_unfiltered ('\n'); | |||
3952 | started_error_output = 0; | |||
3953 | } | |||
3954 | } | |||
3955 | } | |||
3956 | ||||
3957 | switch (ch) | |||
3958 | { | |||
3959 | case '+': | |||
3960 | if (remote_debug) | |||
3961 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); | |||
3962 | return 1; | |||
3963 | case '-': | |||
3964 | if (remote_debug) | |||
3965 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |||
3966 | case SERIAL_TIMEOUT: | |||
3967 | tcount++; | |||
3968 | if (tcount > 3) | |||
3969 | return 0; | |||
3970 | break; /* Retransmit buffer */ | |||
3971 | case '$': | |||
3972 | { | |||
3973 | if (remote_debug) | |||
3974 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |||
3975 | /* It's probably an old response, and we're out of sync. | |||
3976 | Just gobble up the packet and ignore it. */ | |||
3977 | read_frame (junkbuf, sizeof_junkbuf); | |||
3978 | continue; /* Now, go look for + */ | |||
3979 | } | |||
3980 | default: | |||
3981 | if (remote_debug) | |||
3982 | { | |||
3983 | if (!started_error_output) | |||
3984 | { | |||
3985 | started_error_output = 1; | |||
3986 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |||
3987 | } | |||
3988 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |||
3989 | } | |||
3990 | continue; | |||
3991 | } | |||
3992 | break; /* Here to retransmit */ | |||
3993 | } | |||
3994 | ||||
3995 | #if 0 | |||
3996 | /* This is wrong. If doing a long backtrace, the user should be | |||
3997 | able to get out next time we call QUIT, without anything as | |||
3998 | violent as interrupt_query. If we want to provide a way out of | |||
3999 | here without getting to the next QUIT, it should be based on | |||
4000 | hitting ^C twice as in remote_wait. */ | |||
4001 | if (quit_flag) | |||
4002 | { | |||
4003 | quit_flag = 0; | |||
4004 | interrupt_query (); | |||
4005 | } | |||
4006 | #endif | |||
4007 | } | |||
4008 | } | |||
4009 | ||||
4010 | /* Come here after finding the start of the frame. Collect the rest | |||
4011 | into BUF, verifying the checksum, length, and handling run-length | |||
4012 | compression. No more than sizeof_buf-1 characters are read so that | |||
4013 | the buffer can be NUL terminated. | |||
4014 | ||||
4015 | Returns -1 on error, number of characters in buffer (ignoring the | |||
4016 | trailing NULL) on success. (could be extended to return one of the | |||
4017 | SERIAL status indications). */ | |||
4018 | ||||
4019 | static long | |||
4020 | read_frame (char *buf, | |||
4021 | long sizeof_buf) | |||
4022 | { | |||
4023 | unsigned char csum; | |||
4024 | long bc; | |||
4025 | int c; | |||
4026 | ||||
4027 | csum = 0; | |||
4028 | bc = 0; | |||
4029 | ||||
4030 | while (1) | |||
4031 | { | |||
4032 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ | |||
4033 | c = readchar (remote_timeout); | |||
4034 | switch (c) | |||
4035 | { | |||
4036 | case SERIAL_TIMEOUT: | |||
4037 | if (remote_debug) | |||
4038 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); | |||
4039 | return -1; | |||
4040 | case '$': | |||
4041 | if (remote_debug) | |||
4042 | fputs_filtered ("Saw new packet start in middle of old one\n", | |||
4043 | gdb_stdlog); | |||
4044 | return -1; /* Start a new packet, count retries */ | |||
4045 | case '#': | |||
4046 | { | |||
4047 | unsigned char pktcsum; | |||
4048 | int check_0 = 0; | |||
4049 | int check_1 = 0; | |||
4050 | ||||
4051 | buf[bc] = '\0'; | |||
4052 | ||||
4053 | check_0 = readchar (remote_timeout); | |||
4054 | if (check_0 >= 0) | |||
4055 | check_1 = readchar (remote_timeout); | |||
4056 | ||||
4057 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |||
4058 | { | |||
4059 | if (remote_debug) | |||
4060 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |||
4061 | return -1; | |||
4062 | } | |||
4063 | else if (check_0 < 0 || check_1 < 0) | |||
4064 | { | |||
4065 | if (remote_debug) | |||
4066 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |||
4067 | return -1; | |||
4068 | } | |||
4069 | ||||
4070 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); | |||
4071 | if (csum == pktcsum) | |||
4072 | return bc; | |||
4073 | ||||
4074 | if (remote_debug) | |||
4075 | { | |||
4076 | fprintf_filtered (gdb_stdlog, | |||
4077 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", | |||
4078 | pktcsum, csum); | |||
4079 | fputs_filtered (buf, gdb_stdlog); | |||
4080 | fputs_filtered ("\n", gdb_stdlog); | |||
4081 | } | |||
4082 | /* Number of characters in buffer ignoring trailing | |||
4083 | NUL. */ | |||
4084 | return -1; | |||
4085 | } | |||
4086 | case '*': /* Run length encoding */ | |||
4087 | { | |||
4088 | int repeat; | |||
4089 | csum += c; | |||
4090 | ||||
4091 | c = readchar (remote_timeout); | |||
4092 | csum += c; | |||
4093 | repeat = c - ' ' + 3; /* Compute repeat count */ | |||
4094 | ||||
4095 | /* The character before ``*'' is repeated. */ | |||
4096 | ||||
4097 | if (repeat > 0 && repeat <= 255 | |||
4098 | && bc > 0 | |||
4099 | && bc + repeat - 1 < sizeof_buf - 1) | |||
4100 | { | |||
4101 | memset (&buf[bc], buf[bc - 1], repeat); | |||
4102 | bc += repeat; | |||
4103 | continue; | |||
4104 | } | |||
4105 | ||||
4106 | buf[bc] = '\0'; | |||
4107 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); | |||
4108 | puts_filtered (buf); | |||
4109 | puts_filtered ("\n"); | |||
4110 | return -1; | |||
4111 | } | |||
4112 | default: | |||
4113 | if (bc < sizeof_buf - 1) | |||
4114 | { | |||
4115 | buf[bc++] = c; | |||
4116 | csum += c; | |||
4117 | continue; | |||
4118 | } | |||
4119 | ||||
4120 | buf[bc] = '\0'; | |||
4121 | puts_filtered ("Remote packet too long: "); | |||
4122 | puts_filtered (buf); | |||
4123 | puts_filtered ("\n"); | |||
4124 | ||||
4125 | return -1; | |||
4126 | } | |||
4127 | } | |||
4128 | } | |||
4129 | ||||
4130 | /* Read a packet from the remote machine, with error checking, and | |||
4131 | store it in BUF. If FOREVER, wait forever rather than timing out; | |||
4132 | this is used (in synchronous mode) to wait for a target that is is | |||
4133 | executing user code to stop. */ | |||
4134 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we | |||
4135 | don't have to change all the calls to getpkt to deal with the | |||
4136 | return value, because at the moment I don't know what the right | |||
4137 | thing to do it for those. */ | |||
4138 | void | |||
4139 | getpkt (char *buf, | |||
4140 | long sizeof_buf, | |||
4141 | int forever) | |||
4142 | { | |||
4143 | int timed_out; | |||
4144 | ||||
4145 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |||
4146 | } | |||
4147 | ||||
4148 | ||||
4149 | /* Read a packet from the remote machine, with error checking, and | |||
4150 | store it in BUF. If FOREVER, wait forever rather than timing out; | |||
4151 | this is used (in synchronous mode) to wait for a target that is is | |||
4152 | executing user code to stop. If FOREVER == 0, this function is | |||
4153 | allowed to time out gracefully and return an indication of this to | |||
4154 | the caller. */ | |||
4155 | static int | |||
4156 | getpkt_sane (char *buf, | |||
4157 | long sizeof_buf, | |||
4158 | int forever) | |||
4159 | { | |||
4160 | int c; | |||
4161 | int tries; | |||
4162 | int timeout; | |||
4163 | int val; | |||
4164 | ||||
4165 | strcpy (buf, "timeout"); | |||
4166 | ||||
4167 | if (forever) | |||
4168 | { | |||
4169 | timeout = watchdog > 0 ? watchdog : -1; | |||
4170 | } | |||
4171 | ||||
4172 | else | |||
4173 | timeout = remote_timeout; | |||
4174 | ||||
4175 | #define MAX_TRIES3 3 | |||
4176 | ||||
4177 | for (tries = 1; tries <= MAX_TRIES3; tries++) | |||
4178 | { | |||
4179 | /* This can loop forever if the remote side sends us characters | |||
4180 | continuously, but if it pauses, we'll get a zero from readchar | |||
4181 | because of timeout. Then we'll count that as a retry. */ | |||
4182 | ||||
4183 | /* Note that we will only wait forever prior to the start of a packet. | |||
4184 | After that, we expect characters to arrive at a brisk pace. They | |||
4185 | should show up within remote_timeout intervals. */ | |||
4186 | ||||
4187 | do | |||
4188 | { | |||
4189 | c = readchar (timeout); | |||
4190 | ||||
4191 | if (c == SERIAL_TIMEOUT) | |||
4192 | { | |||
4193 | if (forever) /* Watchdog went off? Kill the target. */ | |||
4194 | { | |||
4195 | QUIT{ if (quit_flag) quit (); if (deprecated_interactive_hook) deprecated_interactive_hook (); }; | |||
4196 | target_mourn_inferior ()(*current_target.to_mourn_inferior) (); | |||
4197 | error ("Watchdog has expired. Target detached.\n"); | |||
4198 | } | |||
4199 | if (remote_debug) | |||
4200 | fputs_filtered ("Timed out.\n", gdb_stdlog); | |||
4201 | goto retry; | |||
4202 | } | |||
4203 | } | |||
4204 | while (c != '$'); | |||
4205 | ||||
4206 | /* We've found the start of a packet, now collect the data. */ | |||
4207 | ||||
4208 | val = read_frame (buf, sizeof_buf); | |||
4209 | ||||
4210 | if (val >= 0) | |||
4211 | { | |||
4212 | if (remote_debug) | |||
4213 | { | |||
4214 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |||
4215 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |||
4216 | fprintf_unfiltered (gdb_stdlog, "\n"); | |||
4217 | } | |||
4218 | serial_write (remote_desc, "+", 1); | |||
4219 | return 0; | |||
4220 | } | |||
4221 | ||||
4222 | /* Try the whole thing again. */ | |||
4223 | retry: | |||
4224 | serial_write (remote_desc, "-", 1); | |||
4225 | } | |||
4226 | ||||
4227 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |||
4228 | ||||
4229 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |||
4230 | serial_write (remote_desc, "+", 1); | |||
4231 | return 1; | |||
4232 | } | |||
4233 | ||||
4234 | static void | |||
4235 | remote_kill (void) | |||
4236 | { | |||
4237 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |||
4238 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |||
4239 | if (kill_kludge) | |||
4240 | { | |||
4241 | kill_kludge = 0; | |||
4242 | target_mourn_inferior ()(*current_target.to_mourn_inferior) (); | |||
4243 | return; | |||
4244 | } | |||
4245 | ||||
4246 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |||
4247 | speaking terms with the remote system. */ | |||
4248 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR(1 << (int)(-RETURN_ERROR))); | |||
4249 | ||||
4250 | /* Don't wait for it to die. I'm not really sure it matters whether | |||
4251 | we do or not. For the existing stubs, kill is a noop. */ | |||
4252 | target_mourn_inferior ()(*current_target.to_mourn_inferior) (); | |||
4253 | } | |||
4254 | ||||
4255 | /* Async version of remote_kill. */ | |||
4256 | static void | |||
4257 | remote_async_kill (void) | |||
4258 | { | |||
4259 | /* Unregister the file descriptor from the event loop. */ | |||
4260 | if (target_is_async_p ()(current_target.to_is_async_p())) | |||
4261 | serial_async (remote_desc, NULL((void*)0), 0); | |||
4262 | ||||
4263 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |||
4264 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |||
4265 | if (kill_kludge) | |||
4266 | { | |||
4267 | kill_kludge = 0; | |||
4268 | target_mourn_inferior ()(*current_target.to_mourn_inferior) (); | |||
4269 | return; | |||
4270 | } | |||
4271 | ||||
4272 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |||
4273 | speaking terms with the remote system. */ | |||
4274 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR(1 << (int)(-RETURN_ERROR))); | |||
4275 | ||||
4276 | /* Don't wait for it to die. I'm not really sure it matters whether | |||
4277 | we do or not. For the existing stubs, kill is a noop. */ | |||
4278 | target_mourn_inferior ()(*current_target.to_mourn_inferior) (); | |||
4279 | } | |||
4280 | ||||
4281 | static void | |||
4282 | remote_mourn (void) | |||
4283 | { | |||
4284 | remote_mourn_1 (&remote_ops); | |||
4285 | } | |||
4286 | ||||
4287 | static void | |||
4288 | remote_async_mourn (void) | |||
4289 | { | |||
4290 | remote_mourn_1 (&remote_async_ops); | |||
4291 | } | |||
4292 | ||||
4293 | static void | |||
4294 | extended_remote_mourn (void) | |||
4295 | { | |||
4296 | /* We do _not_ want to mourn the target like this; this will | |||
4297 | remove the extended remote target from the target stack, | |||
4298 | and the next time the user says "run" it'll fail. | |||
4299 | ||||
4300 | FIXME: What is the right thing to do here? */ | |||
4301 | #if 0 | |||
4302 | remote_mourn_1 (&extended_remote_ops); | |||
4303 | #endif | |||
4304 | } | |||
4305 | ||||
4306 | /* Worker function for remote_mourn. */ | |||
4307 | static void | |||
4308 | remote_mourn_1 (struct target_ops *target) | |||
4309 | { | |||
4310 | unpush_target (target); | |||
4311 | generic_mourn_inferior (); | |||
4312 | } | |||
4313 | ||||
4314 | /* In the extended protocol we want to be able to do things like | |||
4315 | "run" and have them basically work as expected. So we need | |||
4316 | a special create_inferior function. | |||
4317 | ||||
4318 | FIXME: One day add support for changing the exec file | |||
4319 | we're debugging, arguments and an environment. */ | |||
4320 | ||||
4321 | static void | |||
4322 | extended_remote_create_inferior (char *exec_file, char *args, char **env, | |||
4323 | int from_tty) | |||
4324 | { | |||
4325 | /* Rip out the breakpoints; we'll reinsert them after restarting | |||
4326 | the remote server. */ | |||
4327 | remove_breakpoints (); | |||
4328 | ||||
4329 | /* Now restart the remote server. */ | |||
4330 | extended_remote_restart (); | |||
4331 | ||||
4332 | /* Now put the breakpoints back in. This way we're safe if the | |||
4333 | restart function works via a unix fork on the remote side. */ | |||
4334 | insert_breakpoints (); | |||
4335 | ||||
4336 | /* Clean up from the last time we were running. */ | |||
4337 | clear_proceed_status (); | |||
4338 | ||||
4339 | /* Let the remote process run. */ | |||
4340 | proceed (-1, TARGET_SIGNAL_0, 0); | |||
4341 | } | |||
4342 | ||||
4343 | /* Async version of extended_remote_create_inferior. */ | |||
4344 | static void | |||
4345 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env, | |||
4346 | int from_tty) | |||
4347 | { | |||
4348 | /* Rip out the breakpoints; we'll reinsert them after restarting | |||
4349 | the remote server. */ | |||
4350 | remove_breakpoints (); | |||
4351 | ||||
4352 | /* If running asynchronously, register the target file descriptor | |||
4353 | with the event loop. */ | |||
4354 | if (target_can_async_p ()(current_target.to_can_async_p ())) | |||
4355 | target_async (inferior_event_handler, 0)(current_target.to_async((inferior_event_handler), (0))); | |||
4356 | ||||
4357 | /* Now restart the remote server. */ | |||
4358 | extended_remote_restart (); | |||
4359 | ||||
4360 | /* Now put the breakpoints back in. This way we're safe if the | |||
4361 | restart function works via a unix fork on the remote side. */ | |||
4362 | insert_breakpoints (); | |||
4363 | ||||
4364 | /* Clean up from the last time we were running. */ | |||
4365 | clear_proceed_status (); | |||
4366 | ||||
4367 | /* Let the remote process run. */ | |||
4368 | proceed (-1, TARGET_SIGNAL_0, 0); | |||
4369 | } | |||
4370 | ||||
4371 | ||||
4372 | /* On some machines, e.g. 68k, we may use a different breakpoint | |||
4373 | instruction than other targets; in those use | |||
4374 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |||
4375 | Also, bi-endian targets may define | |||
4376 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |||
4377 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |||
4378 | just call the standard routines that are in mem-break.c. */ | |||
4379 | ||||
4380 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |||
4381 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |||
4382 | the ARCH-OS-tdep.c code can override the default. */ | |||
4383 | ||||
4384 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |||
4385 | #define DEPRECATED_REMOTE_BREAKPOINT | |||
4386 | #endif | |||
4387 | ||||
4388 | #ifdef DEPRECATED_REMOTE_BREAKPOINT | |||
4389 | ||||
4390 | /* If the target isn't bi-endian, just pretend it is. */ | |||
4391 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) | |||
4392 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |||
4393 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |||
4394 | #endif | |||
4395 | ||||
4396 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; | |||
4397 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |||
4398 | ||||
4399 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ | |||
4400 | ||||
4401 | /* Insert a breakpoint on targets that don't have any better | |||
4402 | breakpoint support. We read the contents of the target location | |||
4403 | and stash it, then overwrite it with a breakpoint instruction. | |||
4404 | ADDR is the target location in the target machine. CONTENTS_CACHE | |||
4405 | is a pointer to memory allocated for saving the target contents. | |||
4406 | It is guaranteed by the caller to be long enough to save the number | |||
4407 | of bytes returned by BREAKPOINT_FROM_PC. */ | |||
4408 | ||||
4409 | static int | |||
4410 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) | |||
4411 | { | |||
4412 | struct remote_state *rs = get_remote_state (); | |||
4413 | #ifdef DEPRECATED_REMOTE_BREAKPOINT | |||
4414 | int val; | |||
4415 | #endif | |||
4416 | int bp_size; | |||
4417 | ||||
4418 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. | |||
4419 | If it succeeds, then set the support to PACKET_ENABLE. If it | |||
4420 | fails, and the user has explicitly requested the Z support then | |||
4421 | report an error, otherwise, mark it disabled and go on. */ | |||
4422 | ||||
4423 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) | |||
4424 | { | |||
4425 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
4426 | char *p = buf; | |||
4427 | ||||
4428 | addr = remote_address_masked (addr); | |||
4429 | *(p++) = 'Z'; | |||
4430 | *(p++) = '0'; | |||
4431 | *(p++) = ','; | |||
4432 | p += hexnumstr (p, (ULONGESTunsigned long) addr); | |||
4433 | BREAKPOINT_FROM_PC (&addr, &bp_size)(gdbarch_breakpoint_from_pc (current_gdbarch, &addr, & bp_size)); | |||
4434 | sprintf (p, ",%d", bp_size); | |||
4435 | ||||
4436 | putpkt (buf); | |||
4437 | getpkt (buf, (rs->remote_packet_size), 0); | |||
4438 | ||||
4439 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) | |||
4440 | { | |||
4441 | case PACKET_ERROR: | |||
4442 | return -1; | |||
4443 | case PACKET_OK: | |||
4444 | return 0; | |||
4445 | case PACKET_UNKNOWN: | |||
4446 | break; | |||
4447 | } | |||
4448 | } | |||
4449 | ||||
4450 | #ifdef DEPRECATED_REMOTE_BREAKPOINT | |||
4451 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); | |||
4452 | ||||
4453 | if (val == 0) | |||
4454 | { | |||
4455 | if (TARGET_BYTE_ORDER(gdbarch_byte_order (current_gdbarch)) == BFD_ENDIAN_BIG) | |||
4456 | val = target_write_memory (addr, (char *) big_break_insn, | |||
4457 | sizeof big_break_insn); | |||
4458 | else | |||
4459 | val = target_write_memory (addr, (char *) little_break_insn, | |||
4460 | sizeof little_break_insn); | |||
4461 | } | |||
4462 | ||||
4463 | return val; | |||
4464 | #else | |||
4465 | return memory_insert_breakpoint (addr, contents_cache); | |||
4466 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ | |||
4467 | } | |||
4468 | ||||
4469 | static int | |||
4470 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) | |||
4471 | { | |||
4472 | struct remote_state *rs = get_remote_state (); | |||
4473 | int bp_size; | |||
4474 | ||||
4475 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) | |||
4476 | { | |||
4477 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
4478 | char *p = buf; | |||
4479 | ||||
4480 | *(p++) = 'z'; | |||
4481 | *(p++) = '0'; | |||
4482 | *(p++) = ','; | |||
4483 | ||||
4484 | addr = remote_address_masked (addr); | |||
4485 | p += hexnumstr (p, (ULONGESTunsigned long) addr); | |||
4486 | BREAKPOINT_FROM_PC (&addr, &bp_size)(gdbarch_breakpoint_from_pc (current_gdbarch, &addr, & bp_size)); | |||
4487 | sprintf (p, ",%d", bp_size); | |||
4488 | ||||
4489 | putpkt (buf); | |||
4490 | getpkt (buf, (rs->remote_packet_size), 0); | |||
4491 | ||||
4492 | return (buf[0] == 'E'); | |||
4493 | } | |||
4494 | ||||
4495 | #ifdef DEPRECATED_REMOTE_BREAKPOINT | |||
4496 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |||
4497 | #else | |||
4498 | return memory_remove_breakpoint (addr, contents_cache); | |||
4499 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ | |||
4500 | } | |||
4501 | ||||
4502 | static int | |||
4503 | watchpoint_to_Z_packet (int type) | |||
4504 | { | |||
4505 | switch (type) | |||
4506 | { | |||
4507 | case hw_write: | |||
4508 | return 2; | |||
4509 | break; | |||
4510 | case hw_read: | |||
4511 | return 3; | |||
4512 | break; | |||
4513 | case hw_access: | |||
4514 | return 4; | |||
4515 | break; | |||
4516 | default: | |||
4517 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__4517, | |||
4518 | "hw_bp_to_z: bad watchpoint type %d", type); | |||
4519 | } | |||
4520 | } | |||
4521 | ||||
4522 | static int | |||
4523 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) | |||
4524 | { | |||
4525 | struct remote_state *rs = get_remote_state (); | |||
4526 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
4527 | char *p; | |||
4528 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); | |||
4529 | ||||
4530 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |||
4531 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |||
4532 | remote_protocol_Z[packet].name, | |||
4533 | remote_protocol_Z[packet].title); | |||
4534 | ||||
4535 | sprintf (buf, "Z%x,", packet); | |||
4536 | p = strchr (buf, '\0'); | |||
4537 | addr = remote_address_masked (addr); | |||
4538 | p += hexnumstr (p, (ULONGESTunsigned long) addr); | |||
4539 | sprintf (p, ",%x", len); | |||
4540 | ||||
4541 | putpkt (buf); | |||
4542 | getpkt (buf, (rs->remote_packet_size), 0); | |||
4543 | ||||
4544 | switch (packet_ok (buf, &remote_protocol_Z[packet])) | |||
4545 | { | |||
4546 | case PACKET_ERROR: | |||
4547 | case PACKET_UNKNOWN: | |||
4548 | return -1; | |||
4549 | case PACKET_OK: | |||
4550 | return 0; | |||
4551 | } | |||
4552 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__4552, | |||
4553 | "remote_insert_watchpoint: reached end of function"); | |||
4554 | } | |||
4555 | ||||
4556 | ||||
4557 | static int | |||
4558 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) | |||
4559 | { | |||
4560 | struct remote_state *rs = get_remote_state (); | |||
4561 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
4562 | char *p; | |||
4563 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); | |||
4564 | ||||
4565 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |||
4566 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |||
4567 | remote_protocol_Z[packet].name, | |||
4568 | remote_protocol_Z[packet].title); | |||
4569 | ||||
4570 | sprintf (buf, "z%x,", packet); | |||
4571 | p = strchr (buf, '\0'); | |||
4572 | addr = remote_address_masked (addr); | |||
4573 | p += hexnumstr (p, (ULONGESTunsigned long) addr); | |||
4574 | sprintf (p, ",%x", len); | |||
4575 | putpkt (buf); | |||
4576 | getpkt (buf, (rs->remote_packet_size), 0); | |||
4577 | ||||
4578 | switch (packet_ok (buf, &remote_protocol_Z[packet])) | |||
4579 | { | |||
4580 | case PACKET_ERROR: | |||
4581 | case PACKET_UNKNOWN: | |||
4582 | return -1; | |||
4583 | case PACKET_OK: | |||
4584 | return 0; | |||
4585 | } | |||
4586 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__4586, | |||
4587 | "remote_remove_watchpoint: reached end of function"); | |||
4588 | } | |||
4589 | ||||
4590 | ||||
4591 | int remote_hw_watchpoint_limit = -1; | |||
4592 | int remote_hw_breakpoint_limit = -1; | |||
4593 | ||||
4594 | static int | |||
4595 | remote_check_watch_resources (int type, int cnt, int ot) | |||
4596 | { | |||
4597 | if (type == bp_hardware_breakpoint) | |||
4598 | { | |||
4599 | if (remote_hw_breakpoint_limit == 0) | |||
4600 | return 0; | |||
4601 | else if (remote_hw_breakpoint_limit < 0) | |||
4602 | return 1; | |||
4603 | else if (cnt <= remote_hw_breakpoint_limit) | |||
4604 | return 1; | |||
4605 | } | |||
4606 | else | |||
4607 | { | |||
4608 | if (remote_hw_watchpoint_limit == 0) | |||
4609 | return 0; | |||
4610 | else if (remote_hw_watchpoint_limit < 0) | |||
4611 | return 1; | |||
4612 | else if (ot) | |||
4613 | return -1; | |||
4614 | else if (cnt <= remote_hw_watchpoint_limit) | |||
4615 | return 1; | |||
4616 | } | |||
4617 | return -1; | |||
4618 | } | |||
4619 | ||||
4620 | static int | |||
4621 | remote_stopped_by_watchpoint (void) | |||
4622 | { | |||
4623 | return remote_stopped_by_watchpoint_p; | |||
4624 | } | |||
4625 | ||||
4626 | extern int stepped_after_stopped_by_watchpoint; | |||
4627 | ||||
4628 | static int | |||
4629 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |||
4630 | { | |||
4631 | int rc = 0; | |||
4632 | if (remote_stopped_by_watchpoint () | |||
4633 | || stepped_after_stopped_by_watchpoint) | |||
4634 | { | |||
4635 | *addr_p = remote_watch_data_address; | |||
4636 | rc = 1; | |||
4637 | } | |||
4638 | ||||
4639 | return rc; | |||
4640 | } | |||
4641 | ||||
4642 | ||||
4643 | static int | |||
4644 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |||
4645 | { | |||
4646 | int len = 0; | |||
4647 | struct remote_state *rs = get_remote_state (); | |||
4648 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
4649 | char *p = buf; | |||
4650 | ||||
4651 | /* The length field should be set to the size of a breakpoint | |||
4652 | instruction. */ | |||
4653 | ||||
4654 | BREAKPOINT_FROM_PC (&addr, &len)(gdbarch_breakpoint_from_pc (current_gdbarch, &addr, & len)); | |||
4655 | ||||
4656 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) | |||
4657 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |||
4658 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |||
4659 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |||
4660 | ||||
4661 | *(p++) = 'Z'; | |||
4662 | *(p++) = '1'; | |||
4663 | *(p++) = ','; | |||
4664 | ||||
4665 | addr = remote_address_masked (addr); | |||
4666 | p += hexnumstr (p, (ULONGESTunsigned long) addr); | |||
4667 | sprintf (p, ",%x", len); | |||
4668 | ||||
4669 | putpkt (buf); | |||
4670 | getpkt (buf, (rs->remote_packet_size), 0); | |||
4671 | ||||
4672 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) | |||
4673 | { | |||
4674 | case PACKET_ERROR: | |||
4675 | case PACKET_UNKNOWN: | |||
4676 | return -1; | |||
4677 | case PACKET_OK: | |||
4678 | return 0; | |||
4679 | } | |||
4680 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__4680, | |||
4681 | "remote_insert_hw_breakpoint: reached end of function"); | |||
4682 | } | |||
4683 | ||||
4684 | ||||
4685 | static int | |||
4686 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) | |||
4687 | { | |||
4688 | int len; | |||
4689 | struct remote_state *rs = get_remote_state (); | |||
4690 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
4691 | char *p = buf; | |||
4692 | ||||
4693 | /* The length field should be set to the size of a breakpoint | |||
4694 | instruction. */ | |||
4695 | ||||
4696 | BREAKPOINT_FROM_PC (&addr, &len)(gdbarch_breakpoint_from_pc (current_gdbarch, &addr, & len)); | |||
4697 | ||||
4698 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) | |||
4699 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |||
4700 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |||
4701 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |||
4702 | ||||
4703 | *(p++) = 'z'; | |||
4704 | *(p++) = '1'; | |||
4705 | *(p++) = ','; | |||
4706 | ||||
4707 | addr = remote_address_masked (addr); | |||
4708 | p += hexnumstr (p, (ULONGESTunsigned long) addr); | |||
4709 | sprintf (p, ",%x", len); | |||
4710 | ||||
4711 | putpkt(buf); | |||
4712 | getpkt (buf, (rs->remote_packet_size), 0); | |||
4713 | ||||
4714 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) | |||
4715 | { | |||
4716 | case PACKET_ERROR: | |||
4717 | case PACKET_UNKNOWN: | |||
4718 | return -1; | |||
4719 | case PACKET_OK: | |||
4720 | return 0; | |||
4721 | } | |||
4722 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__4722, | |||
4723 | "remote_remove_hw_breakpoint: reached end of function"); | |||
4724 | } | |||
4725 | ||||
4726 | /* Some targets are only capable of doing downloads, and afterwards | |||
4727 | they switch to the remote serial protocol. This function provides | |||
4728 | a clean way to get from the download target to the remote target. | |||
4729 | It's basically just a wrapper so that we don't have to expose any | |||
4730 | of the internal workings of remote.c. | |||
4731 | ||||
4732 | Prior to calling this routine, you should shutdown the current | |||
4733 | target code, else you will get the "A program is being debugged | |||
4734 | already..." message. Usually a call to pop_target() suffices. */ | |||
4735 | ||||
4736 | void | |||
4737 | push_remote_target (char *name, int from_tty) | |||
4738 | { | |||
4739 | printf_filtered ("Switching to remote protocol\n"); | |||
4740 | remote_open (name, from_tty); | |||
4741 | } | |||
4742 | ||||
4743 | /* Table used by the crc32 function to calcuate the checksum. */ | |||
4744 | ||||
4745 | static unsigned long crc32_table[256] = | |||
4746 | {0, 0}; | |||
4747 | ||||
4748 | static unsigned long | |||
4749 | crc32 (unsigned char *buf, int len, unsigned int crc) | |||
4750 | { | |||
4751 | if (!crc32_table[1]) | |||
4752 | { | |||
4753 | /* Initialize the CRC table and the decoding table. */ | |||
4754 | int i, j; | |||
4755 | unsigned int c; | |||
4756 | ||||
4757 | for (i = 0; i < 256; i++) | |||
4758 | { | |||
4759 | for (c = i << 24, j = 8; j > 0; --j) | |||
4760 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |||
4761 | crc32_table[i] = c; | |||
4762 | } | |||
4763 | } | |||
4764 | ||||
4765 | while (len--) | |||
4766 | { | |||
4767 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |||
4768 | buf++; | |||
4769 | } | |||
4770 | return crc; | |||
4771 | } | |||
4772 | ||||
4773 | /* compare-sections command | |||
4774 | ||||
4775 | With no arguments, compares each loadable section in the exec bfd | |||
4776 | with the same memory range on the target, and reports mismatches. | |||
4777 | Useful for verifying the image on the target against the exec file. | |||
4778 | Depends on the target understanding the new "qCRC:" request. */ | |||
4779 | ||||
4780 | /* FIXME: cagney/1999-10-26: This command should be broken down into a | |||
4781 | target method (target verify memory) and generic version of the | |||
4782 | actual command. This will allow other high-level code (especially | |||
4783 | generic_load()) to make use of this target functionality. */ | |||
4784 | ||||
4785 | static void | |||
4786 | compare_sections_command (char *args, int from_tty) | |||
4787 | { | |||
4788 | struct remote_state *rs = get_remote_state (); | |||
4789 | asection *s; | |||
4790 | unsigned long host_crc, target_crc; | |||
4791 | extern bfd *exec_bfd; | |||
4792 | struct cleanup *old_chain; | |||
4793 | char *tmp; | |||
4794 | char *sectdata; | |||
4795 | const char *sectname; | |||
4796 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
4797 | bfd_size_type size; | |||
4798 | bfd_vma lma; | |||
4799 | int matched = 0; | |||
4800 | int mismatched = 0; | |||
4801 | ||||
4802 | if (!exec_bfd) | |||
4803 | error ("command cannot be used without an exec file"); | |||
4804 | if (!current_target.to_shortname || | |||
4805 | strcmp (current_target.to_shortname, "remote") != 0) | |||
4806 | error ("command can only be used with remote target"); | |||
4807 | ||||
4808 | for (s = exec_bfd->sections; s; s = s->next) | |||
4809 | { | |||
4810 | if (!(s->flags & SEC_LOAD0x002)) | |||
4811 | continue; /* skip non-loadable section */ | |||
4812 | ||||
4813 | size = bfd_get_section_size (s)((s)->_raw_size); | |||
4814 | if (size == 0) | |||
4815 | continue; /* skip zero-length section */ | |||
4816 | ||||
4817 | sectname = bfd_get_section_name (exec_bfd, s)((s)->name + 0); | |||
4818 | if (args && strcmp (args, sectname) != 0) | |||
4819 | continue; /* not the section selected by user */ | |||
4820 | ||||
4821 | matched = 1; /* do this section */ | |||
4822 | lma = s->lma; | |||
4823 | /* FIXME: assumes lma can fit into long */ | |||
4824 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |||
4825 | putpkt (buf); | |||
4826 | ||||
4827 | /* be clever; compute the host_crc before waiting for target reply */ | |||
4828 | sectdata = xmalloc (size); | |||
4829 | old_chain = make_cleanup (xfree, sectdata); | |||
4830 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); | |||
4831 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |||
4832 | ||||
4833 | getpkt (buf, (rs->remote_packet_size), 0); | |||
4834 | if (buf[0] == 'E') | |||
4835 | error ("target memory fault, section %s, range 0x%s -- 0x%s", | |||
4836 | sectname, paddr (lma), paddr (lma + size)); | |||
4837 | if (buf[0] != 'C') | |||
4838 | error ("remote target does not support this operation"); | |||
4839 | ||||
4840 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |||
4841 | target_crc = target_crc * 16 + fromhex (*tmp); | |||
4842 | ||||
4843 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", | |||
4844 | sectname, paddr (lma), paddr (lma + size)); | |||
4845 | if (host_crc == target_crc) | |||
4846 | printf_filtered ("matched.\n"); | |||
4847 | else | |||
4848 | { | |||
4849 | printf_filtered ("MIS-MATCHED!\n"); | |||
4850 | mismatched++; | |||
4851 | } | |||
4852 | ||||
4853 | do_cleanups (old_chain); | |||
4854 | } | |||
4855 | if (mismatched > 0) | |||
4856 | warning ("One or more sections of the remote executable does not match\n\ | |||
4857 | the loaded file\n"); | |||
4858 | if (args && !matched) | |||
4859 | printf_filtered ("No loaded section named '%s'.\n", args); | |||
4860 | } | |||
4861 | ||||
4862 | static LONGESTlong | |||
4863 | remote_xfer_partial (struct target_ops *ops, enum target_object object, | |||
4864 | const char *annex, void *readbuf, const void *writebuf, | |||
4865 | ULONGESTunsigned long offset, LONGESTlong len) | |||
4866 | { | |||
4867 | struct remote_state *rs = get_remote_state (); | |||
4868 | int i; | |||
4869 | char *buf2 = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
4870 | char *p2 = &buf2[0]; | |||
4871 | char query_type; | |||
4872 | ||||
4873 | /* Handle memory using remote_xfer_memory. */ | |||
4874 | if (object == TARGET_OBJECT_MEMORY) | |||
4875 | { | |||
4876 | int xfered; | |||
4877 | errno(*__errno()) = 0; | |||
4878 | ||||
4879 | if (writebuf != NULL((void*)0)) | |||
4880 | { | |||
4881 | void *buffer = xmalloc (len); | |||
4882 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |||
4883 | memcpy (buffer, writebuf, len); | |||
4884 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL((void*)0), ops); | |||
4885 | do_cleanups (cleanup); | |||
4886 | } | |||
4887 | else | |||
4888 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL((void*)0), ops); | |||
4889 | ||||
4890 | if (xfered > 0) | |||
4891 | return xfered; | |||
4892 | else if (xfered == 0 && errno(*__errno()) == 0) | |||
4893 | return 0; | |||
4894 | else | |||
4895 | return -1; | |||
4896 | } | |||
4897 | ||||
4898 | /* Only handle reads. */ | |||
4899 | if (writebuf != NULL((void*)0) || readbuf == NULL((void*)0)) | |||
4900 | return -1; | |||
4901 | ||||
4902 | /* Map pre-existing objects onto letters. DO NOT do this for new | |||
4903 | objects!!! Instead specify new query packets. */ | |||
4904 | switch (object) | |||
4905 | { | |||
4906 | case TARGET_OBJECT_KOD: | |||
4907 | query_type = 'K'; | |||
4908 | break; | |||
4909 | case TARGET_OBJECT_AVR: | |||
4910 | query_type = 'R'; | |||
4911 | break; | |||
4912 | ||||
4913 | case TARGET_OBJECT_AUXV: | |||
4914 | if (remote_protocol_qPart_auxv.support != PACKET_DISABLE) | |||
4915 | { | |||
4916 | unsigned int total = 0; | |||
4917 | while (len > 0) | |||
4918 | { | |||
4919 | LONGESTlong n = min ((rs->remote_packet_size - 2) / 2, len)(((rs->remote_packet_size - 2) / 2) < (len) ? ((rs-> remote_packet_size - 2) / 2) : (len)); | |||
4920 | snprintf (buf2, rs->remote_packet_size, | |||
4921 | "qPart:auxv:read::%s,%s", | |||
4922 | phex_nz (offset, sizeof offset), | |||
4923 | phex_nz (n, sizeof n)); | |||
4924 | i = putpkt (buf2); | |||
4925 | if (i < 0) | |||
4926 | return total > 0 ? total : i; | |||
4927 | buf2[0] = '\0'; | |||
4928 | getpkt (buf2, rs->remote_packet_size, 0); | |||
4929 | if (packet_ok (buf2, &remote_protocol_qPart_auxv) != PACKET_OK) | |||
4930 | return total > 0 ? total : -1; | |||
4931 | if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0') | |||
4932 | break; /* Got EOF indicator. */ | |||
4933 | /* Got some data. */ | |||
4934 | i = hex2bin (buf2, readbuf, len); | |||
4935 | if (i > 0) | |||
4936 | { | |||
4937 | readbuf = (void *) ((char *) readbuf + i); | |||
4938 | offset += i; | |||
4939 | len -= i; | |||
4940 | total += i; | |||
4941 | } | |||
4942 | } | |||
4943 | return total; | |||
4944 | } | |||
4945 | return -1; | |||
4946 | ||||
4947 | default: | |||
4948 | return -1; | |||
4949 | } | |||
4950 | ||||
4951 | /* Note: a zero OFFSET and LEN can be used to query the minimum | |||
4952 | buffer size. */ | |||
4953 | if (offset == 0 && len == 0) | |||
4954 | return (rs->remote_packet_size); | |||
4955 | /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is | |||
4956 | not large enough let the caller. */ | |||
4957 | if (len < (rs->remote_packet_size)) | |||
4958 | return -1; | |||
4959 | len = rs->remote_packet_size; | |||
4960 | ||||
4961 | /* except for querying the minimum buffer size, target must be open */ | |||
4962 | if (!remote_desc) | |||
4963 | error ("remote query is only available after target open"); | |||
4964 | ||||
4965 | gdb_assert (annex != NULL)((void) ((annex != ((void*)0)) ? 0 : (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/remote.c" , 4965, "%s: Assertion `%s' failed.", __PRETTY_FUNCTION__, "annex != NULL" ), 0))); | |||
4966 | gdb_assert (readbuf != NULL)((void) ((readbuf != ((void*)0)) ? 0 : (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/remote.c" , 4966, "%s: Assertion `%s' failed.", __PRETTY_FUNCTION__, "readbuf != NULL" ), 0))); | |||
4967 | ||||
4968 | *p2++ = 'q'; | |||
4969 | *p2++ = query_type; | |||
4970 | ||||
4971 | /* we used one buffer char for the remote protocol q command and another | |||
4972 | for the query type. As the remote protocol encapsulation uses 4 chars | |||
4973 | plus one extra in case we are debugging (remote_debug), | |||
4974 | we have PBUFZIZ - 7 left to pack the query string */ | |||
4975 | i = 0; | |||
4976 | while (annex[i] && (i < ((rs->remote_packet_size) - 8))) | |||
4977 | { | |||
4978 | /* Bad caller may have sent forbidden characters. */ | |||
4979 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#')((void) ((isprint (annex[i]) && annex[i] != '$' && annex[i] != '#') ? 0 : (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/remote.c" , 4979, "%s: Assertion `%s' failed.", __PRETTY_FUNCTION__, "isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'" ), 0))); | |||
4980 | *p2++ = annex[i]; | |||
4981 | i++; | |||
4982 | } | |||
4983 | *p2 = '\0'; | |||
4984 | gdb_assert (annex[i] == '\0')((void) ((annex[i] == '\0') ? 0 : (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/remote.c" , 4984, "%s: Assertion `%s' failed.", __PRETTY_FUNCTION__, "annex[i] == '\\0'" ), 0))); | |||
4985 | ||||
4986 | i = putpkt (buf2); | |||
4987 | if (i < 0) | |||
4988 | return i; | |||
4989 | ||||
4990 | getpkt (readbuf, len, 0); | |||
4991 | ||||
4992 | return strlen (readbuf); | |||
4993 | } | |||
4994 | ||||
4995 | static void | |||
4996 | remote_rcmd (char *command, | |||
4997 | struct ui_file *outbuf) | |||
4998 | { | |||
4999 | struct remote_state *rs = get_remote_state (); | |||
5000 | int i; | |||
5001 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
5002 | char *p = buf; | |||
5003 | ||||
5004 | if (!remote_desc) | |||
5005 | error ("remote rcmd is only available after target open"); | |||
5006 | ||||
5007 | /* Send a NULL command across as an empty command */ | |||
5008 | if (command == NULL((void*)0)) | |||
5009 | command = ""; | |||
5010 | ||||
5011 | /* The query prefix */ | |||
5012 | strcpy (buf, "qRcmd,"); | |||
5013 | p = strchr (buf, '\0'); | |||
5014 | ||||
5015 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) | |||
5016 | error ("\"monitor\" command ``%s'' is too long\n", command); | |||
5017 | ||||
5018 | /* Encode the actual command */ | |||
5019 | bin2hex (command, p, 0); | |||
5020 | ||||
5021 | if (putpkt (buf) < 0) | |||
5022 | error ("Communication problem with target\n"); | |||
5023 | ||||
5024 | /* get/display the response */ | |||
5025 | while (1) | |||
5026 | { | |||
5027 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |||
5028 | buf[0] = '\0'; | |||
5029 | getpkt (buf, (rs->remote_packet_size), 0); | |||
5030 | if (buf[0] == '\0') | |||
5031 | error ("Target does not support this command\n"); | |||
5032 | if (buf[0] == 'O' && buf[1] != 'K') | |||
5033 | { | |||
5034 | remote_console_output (buf + 1); /* 'O' message from stub */ | |||
5035 | continue; | |||
5036 | } | |||
5037 | if (strcmp (buf, "OK") == 0) | |||
5038 | break; | |||
5039 | if (strlen (buf) == 3 && buf[0] == 'E' | |||
5040 | && isdigit (buf[1]) && isdigit (buf[2])) | |||
5041 | { | |||
5042 | error ("Protocol error with Rcmd"); | |||
5043 | } | |||
5044 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) | |||
5045 | { | |||
5046 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |||
5047 | fputc_unfiltered (c, outbuf); | |||
5048 | } | |||
5049 | break; | |||
5050 | } | |||
5051 | } | |||
5052 | ||||
5053 | static void | |||
5054 | packet_command (char *args, int from_tty) | |||
5055 | { | |||
5056 | struct remote_state *rs = get_remote_state (); | |||
5057 | char *buf = alloca (rs->remote_packet_size)__builtin_alloca(rs->remote_packet_size); | |||
5058 | ||||
5059 | if (!remote_desc) | |||
5060 | error ("command can only be used with remote target"); | |||
5061 | ||||
5062 | if (!args) | |||
5063 | error ("remote-packet command requires packet text as argument"); | |||
5064 | ||||
5065 | puts_filtered ("sending: "); | |||
5066 | print_packet (args); | |||
5067 | puts_filtered ("\n"); | |||
5068 | putpkt (args); | |||
5069 | ||||
5070 | getpkt (buf, (rs->remote_packet_size), 0); | |||
5071 | puts_filtered ("received: "); | |||
5072 | print_packet (buf); | |||
5073 | puts_filtered ("\n"); | |||
5074 | } | |||
5075 | ||||
5076 | #if 0 | |||
5077 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |||
5078 | ||||
5079 | static void display_thread_info (struct gdb_ext_thread_info *info); | |||
5080 | ||||
5081 | static void threadset_test_cmd (char *cmd, int tty); | |||
5082 | ||||
5083 | static void threadalive_test (char *cmd, int tty); | |||
5084 | ||||
5085 | static void threadlist_test_cmd (char *cmd, int tty); | |||
5086 | ||||
5087 | int get_and_display_threadinfo (threadref * ref); | |||
5088 | ||||
5089 | static void threadinfo_test_cmd (char *cmd, int tty); | |||
5090 | ||||
5091 | static int thread_display_step (threadref * ref, void *context); | |||
5092 | ||||
5093 | static void threadlist_update_test_cmd (char *cmd, int tty); | |||
5094 | ||||
5095 | static void init_remote_threadtests (void); | |||
5096 | ||||
5097 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ | |||
5098 | ||||
5099 | static void | |||
5100 | threadset_test_cmd (char *cmd, int tty) | |||
5101 | { | |||
5102 | int sample_thread = SAMPLE_THREAD; | |||
5103 | ||||
5104 | printf_filtered ("Remote threadset test\n"); | |||
5105 | set_thread (sample_thread, 1); | |||
5106 | } | |||
5107 | ||||
5108 | ||||
5109 | static void | |||
5110 | threadalive_test (char *cmd, int tty) | |||
5111 | { | |||
5112 | int sample_thread = SAMPLE_THREAD; | |||
5113 | ||||
5114 | if (remote_thread_alive (pid_to_ptid (sample_thread))) | |||
5115 | printf_filtered ("PASS: Thread alive test\n"); | |||
5116 | else | |||
5117 | printf_filtered ("FAIL: Thread alive test\n"); | |||
5118 | } | |||
5119 | ||||
5120 | void output_threadid (char *title, threadref * ref); | |||
5121 | ||||
5122 | void | |||
5123 | output_threadid (char *title, threadref *ref) | |||
5124 | { | |||
5125 | char hexid[20]; | |||
5126 | ||||
5127 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |||
5128 | hexid[16] = 0; | |||
5129 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |||
5130 | } | |||
5131 | ||||
5132 | static void | |||
5133 | threadlist_test_cmd (char *cmd, int tty) | |||
5134 | { | |||
5135 | int startflag = 1; | |||
5136 | threadref nextthread; | |||
5137 | int done, result_count; | |||
5138 | threadref threadlist[3]; | |||
5139 | ||||
5140 | printf_filtered ("Remote Threadlist test\n"); | |||
5141 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |||
5142 | &result_count, &threadlist[0])) | |||
5143 | printf_filtered ("FAIL: threadlist test\n"); | |||
5144 | else | |||
5145 | { | |||
5146 | threadref *scan = threadlist; | |||
5147 | threadref *limit = scan + result_count; | |||
5148 | ||||
5149 | while (scan < limit) | |||
5150 | output_threadid (" thread ", scan++); | |||
5151 | } | |||
5152 | } | |||
5153 | ||||
5154 | void | |||
5155 | display_thread_info (struct gdb_ext_thread_info *info) | |||
5156 | { | |||
5157 | output_threadid ("Threadid: ", &info->threadid); | |||
5158 | printf_filtered ("Name: %s\n ", info->shortname); | |||
5159 | printf_filtered ("State: %s\n", info->display); | |||
5160 | printf_filtered ("other: %s\n\n", info->more_display); | |||
5161 | } | |||
5162 | ||||
5163 | int | |||
5164 | get_and_display_threadinfo (threadref *ref) | |||
5165 | { | |||
5166 | int result; | |||
5167 | int set; | |||
5168 | struct gdb_ext_thread_info threadinfo; | |||
5169 | ||||
5170 | set = TAG_THREADID1 | TAG_EXISTS2 | TAG_THREADNAME8 | |||
5171 | | TAG_MOREDISPLAY16 | TAG_DISPLAY4; | |||
5172 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |||
5173 | display_thread_info (&threadinfo); | |||
5174 | return result; | |||
5175 | } | |||
5176 | ||||
5177 | static void | |||
5178 | threadinfo_test_cmd (char *cmd, int tty) | |||
5179 | { | |||
5180 | int athread = SAMPLE_THREAD; | |||
5181 | threadref thread; | |||
5182 | int set; | |||
5183 | ||||
5184 | int_to_threadref (&thread, athread); | |||
5185 | printf_filtered ("Remote Threadinfo test\n"); | |||
5186 | if (!get_and_display_threadinfo (&thread)) | |||
5187 | printf_filtered ("FAIL cannot get thread info\n"); | |||
5188 | } | |||
5189 | ||||
5190 | static int | |||
5191 | thread_display_step (threadref *ref, void *context) | |||
5192 | { | |||
5193 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |||
5194 | return get_and_display_threadinfo (ref); | |||
5195 | } | |||
5196 | ||||
5197 | static void | |||
5198 | threadlist_update_test_cmd (char *cmd, int tty) | |||
5199 | { | |||
5200 | printf_filtered ("Remote Threadlist update test\n"); | |||
5201 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS1000); | |||
5202 | } | |||
5203 | ||||
5204 | static void | |||
5205 | init_remote_threadtests (void) | |||
5206 | { | |||
5207 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |||
5208 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |||
5209 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |||
5210 | "Fetch and display info about one thread"); | |||
5211 | add_com ("tset", class_obscure, threadset_test_cmd, | |||
5212 | "Test setting to a different thread"); | |||
5213 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |||
5214 | "Iterate through updating all remote thread info"); | |||
5215 | add_com ("talive", class_obscure, threadalive_test, | |||
5216 | " Remote thread alive test "); | |||
5217 | } | |||
5218 | ||||
5219 | #endif /* 0 */ | |||
5220 | ||||
5221 | /* Convert a thread ID to a string. Returns the string in a static | |||
5222 | buffer. */ | |||
5223 | ||||
5224 | static char * | |||
5225 | remote_pid_to_str (ptid_t ptid) | |||
5226 | { | |||
5227 | static char buf[30]; | |||
5228 | ||||
5229 | sprintf (buf, "Thread %d", PIDGET (ptid)(ptid_get_pid (ptid))); | |||
5230 | return buf; | |||
5231 | } | |||
5232 | ||||
5233 | static void | |||
5234 | init_remote_ops (void) | |||
5235 | { | |||
5236 | remote_ops.to_shortname = "remote"; | |||
5237 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; | |||
5238 | remote_ops.to_doc = | |||
5239 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |||
5240 | Specify the serial device it is connected to\n\ | |||
5241 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |||
5242 | remote_ops.to_open = remote_open; | |||
5243 | remote_ops.to_close = remote_close; | |||
5244 | remote_ops.to_detach = remote_detach; | |||
5245 | remote_ops.to_disconnect = remote_disconnect; | |||
5246 | remote_ops.to_resume = remote_resume; | |||
5247 | remote_ops.to_wait = remote_wait; | |||
5248 | remote_ops.to_fetch_registers = remote_fetch_registers; | |||
5249 | remote_ops.to_store_registers = remote_store_registers; | |||
5250 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |||
5251 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; | |||
5252 | remote_ops.to_files_info = remote_files_info; | |||
5253 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; | |||
5254 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |||
5255 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |||
5256 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |||
5257 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |||
5258 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |||
5259 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |||
5260 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |||
5261 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |||
5262 | remote_ops.to_kill = remote_kill; | |||
5263 | remote_ops.to_load = generic_load; | |||
5264 | remote_ops.to_mourn_inferior = remote_mourn; | |||
5265 | remote_ops.to_thread_alive = remote_thread_alive; | |||
5266 | remote_ops.to_find_new_threads = remote_threads_info; | |||
5267 | remote_ops.to_pid_to_str = remote_pid_to_str; | |||
5268 | remote_ops.to_extra_thread_info = remote_threads_extra_info; | |||
5269 | remote_ops.to_stop = remote_stop; | |||
5270 | remote_ops.to_xfer_partial = remote_xfer_partial; | |||
5271 | remote_ops.to_rcmd = remote_rcmd; | |||
5272 | remote_ops.to_stratum = process_stratum; | |||
5273 | remote_ops.to_has_all_memory = 1; | |||
5274 | remote_ops.to_has_memory = 1; | |||
5275 | remote_ops.to_has_stack = 1; | |||
5276 | remote_ops.to_has_registers = 1; | |||
5277 | remote_ops.to_has_execution = 1; | |||
5278 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |||
5279 | remote_ops.to_magic = OPS_MAGIC3840; | |||
5280 | } | |||
5281 | ||||
5282 | /* Set up the extended remote vector by making a copy of the standard | |||
5283 | remote vector and adding to it. */ | |||
5284 | ||||
5285 | static void | |||
5286 | init_extended_remote_ops (void) | |||
5287 | { | |||
5288 | extended_remote_ops = remote_ops; | |||
5289 | ||||
5290 | extended_remote_ops.to_shortname = "extended-remote"; | |||
5291 | extended_remote_ops.to_longname = | |||
5292 | "Extended remote serial target in gdb-specific protocol"; | |||
5293 | extended_remote_ops.to_doc = | |||
5294 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |||
5295 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |||
5296 | extended_remote_ops.to_open = extended_remote_open; | |||
5297 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; | |||
5298 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |||
5299 | } | |||
5300 | ||||
5301 | static int | |||
5302 | remote_can_async_p (void) | |||
5303 | { | |||
5304 | /* We're async whenever the serial device is. */ | |||
5305 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); | |||
5306 | } | |||
5307 | ||||
5308 | static int | |||
5309 | remote_is_async_p (void) | |||
5310 | { | |||
5311 | /* We're async whenever the serial device is. */ | |||
5312 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); | |||
5313 | } | |||
5314 | ||||
5315 | /* Pass the SERIAL event on and up to the client. One day this code | |||
5316 | will be able to delay notifying the client of an event until the | |||
5317 | point where an entire packet has been received. */ | |||
5318 | ||||
5319 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |||
5320 | static void *async_client_context; | |||
5321 | static serial_event_ftype remote_async_serial_handler; | |||
5322 | ||||
5323 | static void | |||
5324 | remote_async_serial_handler (struct serial *scb, void *context) | |||
5325 | { | |||
5326 | /* Don't propogate error information up to the client. Instead let | |||
5327 | the client find out about the error by querying the target. */ | |||
5328 | async_client_callback (INF_REG_EVENT, async_client_context); | |||
5329 | } | |||
5330 | ||||
5331 | static void | |||
5332 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |||
5333 | { | |||
5334 | if (current_target.to_async_mask_value == 0) | |||
5335 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/remote.c", __LINE__5335, | |||
5336 | "Calling remote_async when async is masked"); | |||
5337 | ||||
5338 | if (callback != NULL((void*)0)) | |||
5339 | { | |||
5340 | serial_async (remote_desc, remote_async_serial_handler, NULL((void*)0)); | |||
5341 | async_client_callback = callback; | |||
5342 | async_client_context = context; | |||
5343 | } | |||
5344 | else | |||
5345 | serial_async (remote_desc, NULL((void*)0), NULL((void*)0)); | |||
5346 | } | |||
5347 | ||||
5348 | /* Target async and target extended-async. | |||
5349 | ||||
5350 | This are temporary targets, until it is all tested. Eventually | |||
5351 | async support will be incorporated int the usual 'remote' | |||
5352 | target. */ | |||
5353 | ||||
5354 | static void | |||
5355 | init_remote_async_ops (void) | |||
5356 | { | |||
5357 | remote_async_ops.to_shortname = "async"; | |||
5358 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; | |||
5359 | remote_async_ops.to_doc = | |||
5360 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |||
5361 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |||
5362 | remote_async_ops.to_open = remote_async_open; | |||
5363 | remote_async_ops.to_close = remote_close; | |||
5364 | remote_async_ops.to_detach = remote_detach; | |||
5365 | remote_async_ops.to_disconnect = remote_disconnect; | |||
5366 | remote_async_ops.to_resume = remote_async_resume; | |||
5367 | remote_async_ops.to_wait = remote_async_wait; | |||
5368 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |||
5369 | remote_async_ops.to_store_registers = remote_store_registers; | |||
5370 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |||
5371 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; | |||
5372 | remote_async_ops.to_files_info = remote_files_info; | |||
5373 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; | |||
5374 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |||
5375 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |||
5376 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |||
5377 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |||
5378 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |||
5379 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |||
5380 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |||
5381 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |||
5382 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; | |||
5383 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |||
5384 | remote_async_ops.to_kill = remote_async_kill; | |||
5385 | remote_async_ops.to_load = generic_load; | |||
5386 | remote_async_ops.to_mourn_inferior = remote_async_mourn; | |||
5387 | remote_async_ops.to_thread_alive = remote_thread_alive; | |||
5388 | remote_async_ops.to_find_new_threads = remote_threads_info; | |||
5389 | remote_async_ops.to_pid_to_str = remote_pid_to_str; | |||
5390 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |||
5391 | remote_async_ops.to_stop = remote_stop; | |||
5392 | remote_async_ops.to_xfer_partial = remote_xfer_partial; | |||
5393 | remote_async_ops.to_rcmd = remote_rcmd; | |||
5394 | remote_async_ops.to_stratum = process_stratum; | |||
5395 | remote_async_ops.to_has_all_memory = 1; | |||
5396 | remote_async_ops.to_has_memory = 1; | |||
5397 | remote_async_ops.to_has_stack = 1; | |||
5398 | remote_async_ops.to_has_registers = 1; | |||
5399 | remote_async_ops.to_has_execution = 1; | |||
5400 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |||
5401 | remote_async_ops.to_can_async_p = remote_can_async_p; | |||
5402 | remote_async_ops.to_is_async_p = remote_is_async_p; | |||
5403 | remote_async_ops.to_async = remote_async; | |||
5404 | remote_async_ops.to_async_mask_value = 1; | |||
5405 | remote_async_ops.to_magic = OPS_MAGIC3840; | |||
5406 | } | |||
5407 | ||||
5408 | /* Set up the async extended remote vector by making a copy of the standard | |||
5409 | remote vector and adding to it. */ | |||
5410 | ||||
5411 | static void | |||
5412 | init_extended_async_remote_ops (void) | |||
5413 | { | |||
5414 | extended_async_remote_ops = remote_async_ops; | |||
5415 | ||||
5416 | extended_async_remote_ops.to_shortname = "extended-async"; | |||
5417 | extended_async_remote_ops.to_longname = | |||
5418 | "Extended remote serial target in async gdb-specific protocol"; | |||
5419 | extended_async_remote_ops.to_doc = | |||
5420 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ | |||
5421 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |||
5422 | extended_async_remote_ops.to_open = extended_remote_async_open; | |||
5423 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; | |||
5424 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |||
5425 | } | |||
5426 | ||||
5427 | static void | |||
5428 | set_remote_cmd (char *args, int from_tty) | |||
5429 | { | |||
5430 | } | |||
5431 | ||||
5432 | static void | |||
5433 | show_remote_cmd (char *args, int from_tty) | |||
5434 | { | |||
5435 | /* FIXME: cagney/2002-06-15: This function should iterate over | |||
5436 | remote_show_cmdlist for a list of sub commands to show. */ | |||
5437 | show_remote_protocol_Z_packet_cmd (args, from_tty, NULL((void*)0)); | |||
5438 | show_remote_protocol_P_packet_cmd (args, from_tty, NULL((void*)0)); | |||
5439 | show_remote_protocol_p_packet_cmd (args, from_tty, NULL((void*)0)); | |||
5440 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL((void*)0)); | |||
5441 | show_remote_protocol_vcont_packet_cmd (args, from_tty, NULL((void*)0)); | |||
5442 | show_remote_protocol_binary_download_cmd (args, from_tty, NULL((void*)0)); | |||
5443 | show_remote_protocol_qPart_auxv_packet_cmd (args, from_tty, NULL((void*)0)); | |||
5444 | } | |||
5445 | ||||
5446 | static void | |||
5447 | build_remote_gdbarch_data (void) | |||
5448 | { | |||
5449 | remote_address_size = TARGET_ADDR_BIT(gdbarch_addr_bit (current_gdbarch)); | |||
5450 | } | |||
5451 | ||||
5452 | /* Saved pointer to previous owner of the new_objfile event. */ | |||
5453 | static void (*remote_new_objfile_chain) (struct objfile *); | |||
5454 | ||||
5455 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |||
5456 | static void | |||
5457 | remote_new_objfile (struct objfile *objfile) | |||
5458 | { | |||
5459 | if (remote_desc != 0) /* Have a remote connection */ | |||
5460 | { | |||
5461 | remote_check_symbols (objfile); | |||
5462 | } | |||
5463 | /* Call predecessor on chain, if any. */ | |||
5464 | if (remote_new_objfile_chain != 0 && | |||
5465 | remote_desc == 0) | |||
5466 | remote_new_objfile_chain (objfile); | |||
5467 | } | |||
5468 | ||||
5469 | void | |||
5470 | _initialize_remote (void) | |||
5471 | { | |||
5472 | static struct cmd_list_element *remote_set_cmdlist; | |||
5473 | static struct cmd_list_element *remote_show_cmdlist; | |||
5474 | struct cmd_list_element *tmpcmd; | |||
5475 | ||||
5476 | /* architecture specific data */ | |||
5477 | remote_gdbarch_data_handle = gdbarch_data_register_post_init (init_remote_state); | |||
5478 | ||||
5479 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |||
5480 | that the remote protocol has been initialized. */ | |||
5481 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size)deprecated_register_gdbarch_swap (&(remote_address_size), sizeof ((remote_address_size)), ((void*)0)); | |||
5482 | deprecated_register_gdbarch_swap (NULL((void*)0), 0, build_remote_gdbarch_data); | |||
5483 | ||||
5484 | init_remote_ops (); | |||
5485 | add_target (&remote_ops); | |||
5486 | ||||
5487 | init_extended_remote_ops (); | |||
5488 | add_target (&extended_remote_ops); | |||
5489 | ||||
5490 | init_remote_async_ops (); | |||
5491 | add_target (&remote_async_ops); | |||
5492 | ||||
5493 | init_extended_async_remote_ops (); | |||
5494 | add_target (&extended_async_remote_ops); | |||
5495 | ||||
5496 | /* Hook into new objfile notification. */ | |||
5497 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; | |||
5498 | deprecated_target_new_objfile_hook = remote_new_objfile; | |||
5499 | ||||
5500 | #if 0 | |||
5501 | init_remote_threadtests (); | |||
5502 | #endif | |||
5503 | ||||
5504 | /* set/show remote ... */ | |||
5505 | ||||
5506 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ | |||
5507 | Remote protocol specific variables\n\ | |||
5508 | Configure various remote-protocol specific variables such as\n\ | |||
5509 | the packets being used", | |||
5510 | &remote_set_cmdlist, "set remote ", | |||
5511 | 0/*allow-unknown*/, &setlist); | |||
5512 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ | |||
5513 | Remote protocol specific variables\n\ | |||
5514 | Configure various remote-protocol specific variables such as\n\ | |||
5515 | the packets being used", | |||
5516 | &remote_show_cmdlist, "show remote ", | |||
5517 | 0/*allow-unknown*/, &showlist); | |||
5518 | ||||
5519 | add_cmd ("compare-sections", class_obscure, compare_sections_command, | |||
5520 | "Compare section data on target to the exec file.\n\ | |||
5521 | Argument is a single section name (default: all loaded sections).", | |||
5522 | &cmdlist); | |||
5523 | ||||
5524 | add_cmd ("packet", class_maintenance, packet_command, | |||
5525 | "Send an arbitrary packet to a remote target.\n\ | |||
5526 | maintenance packet TEXT\n\ | |||
5527 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |||
5528 | this command sends the string TEXT to the inferior, and displays the\n\ | |||
5529 | response packet. GDB supplies the initial `$' character, and the\n\ | |||
5530 | terminating `#' character and checksum.", | |||
5531 | &maintenancelist); | |||
5532 | ||||
5533 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, "\ | |||
5534 | Set whether to send break if interrupted.", "\ | |||
5535 | Show whether to send break if interrupted.", "\ | |||
5536 | If set, a break, instead of a cntrl-c, is sent to the remote target.", "\ | |||
5537 | Whether to send break if interrupted is %s.", | |||
5538 | NULL((void*)0), NULL((void*)0), | |||
5539 | &setlist, &showlist); | |||
5540 | ||||
5541 | /* Install commands for configuring memory read/write packets. */ | |||
5542 | ||||
5543 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |||
5544 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |||
5545 | &setlist); | |||
5546 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, | |||
5547 | "Show the maximum number of bytes per memory write packet (deprecated).\n", | |||
5548 | &showlist); | |||
5549 | add_cmd ("memory-write-packet-size", no_class, | |||
5550 | set_memory_write_packet_size, | |||
5551 | "Set the maximum number of bytes per memory-write packet.\n" | |||
5552 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |||
5553 | "default packet size. The actual limit is further reduced\n" | |||
5554 | "dependent on the target. Specify ``fixed'' to disable the\n" | |||
5555 | "further restriction and ``limit'' to enable that restriction\n", | |||
5556 | &remote_set_cmdlist); | |||
5557 | add_cmd ("memory-read-packet-size", no_class, | |||
5558 | set_memory_read_packet_size, | |||
5559 | "Set the maximum number of bytes per memory-read packet.\n" | |||
5560 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |||
5561 | "default packet size. The actual limit is further reduced\n" | |||
5562 | "dependent on the target. Specify ``fixed'' to disable the\n" | |||
5563 | "further restriction and ``limit'' to enable that restriction\n", | |||
5564 | &remote_set_cmdlist); | |||
5565 | add_cmd ("memory-write-packet-size", no_class, | |||
5566 | show_memory_write_packet_size, | |||
5567 | "Show the maximum number of bytes per memory-write packet.\n", | |||
5568 | &remote_show_cmdlist); | |||
5569 | add_cmd ("memory-read-packet-size", no_class, | |||
5570 | show_memory_read_packet_size, | |||
5571 | "Show the maximum number of bytes per memory-read packet.\n", | |||
5572 | &remote_show_cmdlist); | |||
5573 | ||||
5574 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, | |||
5575 | &remote_hw_watchpoint_limit, "\ | |||
5576 | Set the maximum number of target hardware watchpoints.", "\ | |||
5577 | Show the maximum number of target hardware watchpoints.", "\ | |||
5578 | Specify a negative limit for unlimited.", "\ | |||
5579 | The maximum number of target hardware watchpoints is %s.", | |||
5580 | NULL((void*)0), NULL((void*)0), | |||
5581 | &remote_set_cmdlist, &remote_show_cmdlist); | |||
5582 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |||
5583 | &remote_hw_breakpoint_limit, "\ | |||
5584 | Set the maximum number of target hardware breakpoints.", "\ | |||
5585 | Show the maximum number of target hardware breakpoints.", "\ | |||
5586 | Specify a negative limit for unlimited.", "\ | |||
5587 | The maximum number of target hardware breakpoints is %s.", | |||
5588 | NULL((void*)0), NULL((void*)0), | |||
5589 | &remote_set_cmdlist, &remote_show_cmdlist); | |||
5590 | ||||
5591 | deprecated_add_show_from_set | |||
5592 | (add_set_cmd ("remoteaddresssize", class_obscure, | |||
5593 | var_integer, (char *) &remote_address_size, | |||
5594 | "Set the maximum size of the address (in bits) \ | |||
5595 | in a memory packet.\n", | |||
5596 | &setlist), | |||
5597 | &showlist); | |||
5598 | ||||
5599 | add_packet_config_cmd (&remote_protocol_binary_download, | |||
5600 | "X", "binary-download", | |||
5601 | set_remote_protocol_binary_download_cmd, | |||
5602 | show_remote_protocol_binary_download_cmd, | |||
5603 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5604 | 1); | |||
5605 | #if 0 | |||
5606 | /* XXXX - should ``set remotebinarydownload'' be retained for | |||
5607 | compatibility. */ | |||
5608 | deprecated_add_show_from_set | |||
5609 | (add_set_cmd ("remotebinarydownload", no_class, | |||
5610 | var_boolean, (char *) &remote_binary_download, | |||
5611 | "Set binary downloads.\n", &setlist), | |||
5612 | &showlist); | |||
5613 | #endif | |||
5614 | ||||
5615 | add_packet_config_cmd (&remote_protocol_vcont, | |||
5616 | "vCont", "verbose-resume", | |||
5617 | set_remote_protocol_vcont_packet_cmd, | |||
5618 | show_remote_protocol_vcont_packet_cmd, | |||
5619 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5620 | 0); | |||
5621 | ||||
5622 | add_packet_config_cmd (&remote_protocol_qSymbol, | |||
5623 | "qSymbol", "symbol-lookup", | |||
5624 | set_remote_protocol_qSymbol_packet_cmd, | |||
5625 | show_remote_protocol_qSymbol_packet_cmd, | |||
5626 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5627 | 0); | |||
5628 | ||||
5629 | add_packet_config_cmd (&remote_protocol_P, | |||
5630 | "P", "set-register", | |||
5631 | set_remote_protocol_P_packet_cmd, | |||
5632 | show_remote_protocol_P_packet_cmd, | |||
5633 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5634 | 1); | |||
5635 | ||||
5636 | add_packet_config_cmd (&remote_protocol_p, | |||
5637 | "p", "fetch-register", | |||
5638 | set_remote_protocol_p_packet_cmd, | |||
5639 | show_remote_protocol_p_packet_cmd, | |||
5640 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5641 | 1); | |||
5642 | ||||
5643 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |||
5644 | "Z0", "software-breakpoint", | |||
5645 | set_remote_protocol_Z_software_bp_packet_cmd, | |||
5646 | show_remote_protocol_Z_software_bp_packet_cmd, | |||
5647 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5648 | 0); | |||
5649 | ||||
5650 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |||
5651 | "Z1", "hardware-breakpoint", | |||
5652 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |||
5653 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |||
5654 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5655 | 0); | |||
5656 | ||||
5657 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |||
5658 | "Z2", "write-watchpoint", | |||
5659 | set_remote_protocol_Z_write_wp_packet_cmd, | |||
5660 | show_remote_protocol_Z_write_wp_packet_cmd, | |||
5661 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5662 | 0); | |||
5663 | ||||
5664 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |||
5665 | "Z3", "read-watchpoint", | |||
5666 | set_remote_protocol_Z_read_wp_packet_cmd, | |||
5667 | show_remote_protocol_Z_read_wp_packet_cmd, | |||
5668 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5669 | 0); | |||
5670 | ||||
5671 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |||
5672 | "Z4", "access-watchpoint", | |||
5673 | set_remote_protocol_Z_access_wp_packet_cmd, | |||
5674 | show_remote_protocol_Z_access_wp_packet_cmd, | |||
5675 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5676 | 0); | |||
5677 | ||||
5678 | add_packet_config_cmd (&remote_protocol_qPart_auxv, | |||
5679 | "qPart_auxv", "read-aux-vector", | |||
5680 | set_remote_protocol_qPart_auxv_packet_cmd, | |||
5681 | show_remote_protocol_qPart_auxv_packet_cmd, | |||
5682 | &remote_set_cmdlist, &remote_show_cmdlist, | |||
5683 | 0); | |||
5684 | ||||
5685 | /* Keep the old ``set remote Z-packet ...'' working. */ | |||
5686 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, | |||
5687 | &remote_Z_packet_detect, "\ | |||
5688 | Set use of remote protocol `Z' packets", "\ | |||
5689 | Show use of remote protocol `Z' packets ", "\ | |||
5690 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ | |||
5691 | packets.", "\ | |||
5692 | Use of remote protocol `Z' packets is %s", | |||
5693 | set_remote_protocol_Z_packet_cmd, | |||
5694 | show_remote_protocol_Z_packet_cmd, | |||
5695 | &remote_set_cmdlist, &remote_show_cmdlist); | |||
5696 | ||||
5697 | /* Eventually initialize fileio. See fileio.c */ | |||
5698 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |||
5699 | } |