Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
b6ba6518 KB |
2 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
3 | 1998, 1999, 2000, 2001 Free Software Foundation, Inc. | |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c5aa993b | 21 | |
96baa820 | 22 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 23 | |
c906108c SS |
24 | #include "defs.h" |
25 | #include "gdb_string.h" | |
26 | #include <ctype.h> | |
27 | #include <fcntl.h> | |
c906108c SS |
28 | #include "inferior.h" |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
31 | #include "target.h" | |
c5aa993b | 32 | /*#include "terminal.h" */ |
c906108c SS |
33 | #include "gdbcmd.h" |
34 | #include "objfiles.h" | |
35 | #include "gdb-stabs.h" | |
36 | #include "gdbthread.h" | |
c2c6d25f | 37 | #include "remote.h" |
4e052eda | 38 | #include "regcache.h" |
fd0407d6 | 39 | #include "value.h" |
1ff9c3d6 | 40 | #include "gdb_assert.h" |
c906108c | 41 | |
7a292a7a | 42 | #include <ctype.h> |
9846de1b | 43 | #include <sys/time.h> |
c906108c SS |
44 | #ifdef USG |
45 | #include <sys/types.h> | |
46 | #endif | |
47 | ||
43ff13b4 | 48 | #include "event-loop.h" |
c2c6d25f | 49 | #include "event-top.h" |
2acceee2 | 50 | #include "inf-loop.h" |
43ff13b4 | 51 | |
c906108c SS |
52 | #include <signal.h> |
53 | #include "serial.h" | |
54 | ||
6240bebf MS |
55 | #include "gdbcore.h" /* for exec_bfd */ |
56 | ||
c906108c | 57 | /* Prototypes for local functions */ |
6426a772 JM |
58 | static void cleanup_sigint_signal_handler (void *dummy); |
59 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 60 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 61 | |
a14ed312 KB |
62 | static void handle_remote_sigint (int); |
63 | static void handle_remote_sigint_twice (int); | |
64 | static void async_remote_interrupt (gdb_client_data); | |
65 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 66 | |
a14ed312 | 67 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 68 | |
917317f4 | 69 | static int remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 70 | |
a14ed312 | 71 | static int remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 72 | |
a14ed312 | 73 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 74 | |
a14ed312 KB |
75 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
76 | int len, int should_write, | |
29e57380 | 77 | struct mem_attrib *attrib, |
a14ed312 | 78 | struct target_ops *target); |
c906108c | 79 | |
a14ed312 | 80 | static void remote_prepare_to_store (void); |
c906108c | 81 | |
a14ed312 | 82 | static void remote_fetch_registers (int regno); |
c906108c | 83 | |
39f77062 KB |
84 | static void remote_resume (ptid_t ptid, int step, |
85 | enum target_signal siggnal); | |
86 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 KB |
87 | enum target_signal siggnal); |
88 | static int remote_start_remote (PTR); | |
c906108c | 89 | |
a14ed312 KB |
90 | static void remote_open (char *name, int from_tty); |
91 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 92 | |
a14ed312 KB |
93 | static void extended_remote_open (char *name, int from_tty); |
94 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 95 | |
a14ed312 KB |
96 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
97 | static void remote_async_open_1 (char *, int, struct target_ops *, | |
98 | int extended_p); | |
c906108c | 99 | |
a14ed312 | 100 | static void remote_close (int quitting); |
c906108c | 101 | |
a14ed312 | 102 | static void remote_store_registers (int regno); |
c906108c | 103 | |
a14ed312 KB |
104 | static void remote_mourn (void); |
105 | static void remote_async_mourn (void); | |
c906108c | 106 | |
a14ed312 | 107 | static void extended_remote_restart (void); |
c906108c | 108 | |
a14ed312 | 109 | static void extended_remote_mourn (void); |
c906108c | 110 | |
a14ed312 KB |
111 | static void extended_remote_create_inferior (char *, char *, char **); |
112 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 113 | |
a14ed312 | 114 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 115 | |
c2d11a7d | 116 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 117 | |
a14ed312 | 118 | static int readchar (int timeout); |
c906108c | 119 | |
39f77062 KB |
120 | static ptid_t remote_wait (ptid_t ptid, |
121 | struct target_waitstatus *status); | |
122 | static ptid_t remote_async_wait (ptid_t ptid, | |
123 | struct target_waitstatus *status); | |
c906108c | 124 | |
a14ed312 KB |
125 | static void remote_kill (void); |
126 | static void remote_async_kill (void); | |
c906108c | 127 | |
a14ed312 | 128 | static int tohex (int nib); |
c906108c | 129 | |
a14ed312 KB |
130 | static void remote_detach (char *args, int from_tty); |
131 | static void remote_async_detach (char *args, int from_tty); | |
c906108c | 132 | |
a14ed312 | 133 | static void remote_interrupt (int signo); |
c906108c | 134 | |
a14ed312 | 135 | static void remote_interrupt_twice (int signo); |
7a292a7a | 136 | |
a14ed312 | 137 | static void interrupt_query (void); |
c906108c | 138 | |
a14ed312 | 139 | static void set_thread (int, int); |
c906108c | 140 | |
39f77062 | 141 | static int remote_thread_alive (ptid_t); |
c906108c | 142 | |
a14ed312 | 143 | static void get_offsets (void); |
c906108c | 144 | |
c2d11a7d | 145 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 146 | |
a14ed312 | 147 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 148 | |
a14ed312 | 149 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 150 | |
a14ed312 | 151 | static int hexnumlen (ULONGEST num); |
c906108c | 152 | |
a14ed312 | 153 | static void init_remote_ops (void); |
c906108c | 154 | |
a14ed312 | 155 | static void init_extended_remote_ops (void); |
c906108c | 156 | |
a14ed312 | 157 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
158 | |
159 | static struct target_ops remote_cisco_ops; | |
160 | ||
a14ed312 | 161 | static void remote_stop (void); |
c906108c | 162 | |
a14ed312 | 163 | static int ishex (int ch, int *val); |
c906108c | 164 | |
a14ed312 | 165 | static int stubhex (int ch); |
c906108c | 166 | |
a14ed312 | 167 | static int remote_query (int /*char */ , char *, char *, int *); |
c906108c | 168 | |
a14ed312 | 169 | static int hexnumstr (char *, ULONGEST); |
c906108c | 170 | |
a14ed312 | 171 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 172 | |
a14ed312 | 173 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 174 | |
a14ed312 | 175 | static void print_packet (char *); |
c906108c | 176 | |
a14ed312 | 177 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 178 | |
a14ed312 | 179 | static void compare_sections_command (char *, int); |
c906108c | 180 | |
a14ed312 | 181 | static void packet_command (char *, int); |
c906108c | 182 | |
a14ed312 | 183 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 184 | |
39f77062 | 185 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 186 | |
a14ed312 | 187 | static void remote_find_new_threads (void); |
c906108c | 188 | |
a14ed312 | 189 | static void record_currthread (int currthread); |
c906108c | 190 | |
30559e10 | 191 | static int fromhex (int a); |
c906108c | 192 | |
dc8acb97 | 193 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 194 | |
dc8acb97 | 195 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 196 | |
a14ed312 | 197 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 198 | |
a14ed312 | 199 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 200 | |
5a2468f5 | 201 | struct packet_config; |
5a2468f5 | 202 | |
a14ed312 | 203 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 204 | |
d471ea57 | 205 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 206 | |
c906108c SS |
207 | /* Define the target subroutine names */ |
208 | ||
a14ed312 | 209 | void open_remote_target (char *, int, struct target_ops *, int); |
c906108c | 210 | |
a14ed312 | 211 | void _initialize_remote (void); |
c906108c | 212 | |
d01949b6 AC |
213 | /* Description of the remote protocol. Strictly speeking, when the |
214 | target is open()ed, remote.c should create a per-target description | |
215 | of the remote protocol using that target's architecture. | |
216 | Unfortunatly, the target stack doesn't include local state. For | |
217 | the moment keep the information in the target's architecture | |
218 | object. Sigh.. */ | |
219 | ||
ad10f812 AC |
220 | struct packet_reg |
221 | { | |
222 | long offset; /* Offset into G packet. */ | |
223 | long regnum; /* GDB's internal register number. */ | |
224 | LONGEST pnum; /* Remote protocol register number. */ | |
225 | /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */ | |
226 | /* char *name; == REGISTER_NAME (regnum); at present. */ | |
227 | }; | |
228 | ||
d01949b6 AC |
229 | struct remote_state |
230 | { | |
ad10f812 AC |
231 | /* Description of the remote protocol registers. */ |
232 | long sizeof_g_packet; | |
233 | struct packet_reg *g_packet; /* NULL terminated. */ | |
234 | ||
d01949b6 AC |
235 | /* This is the size (in chars) of the first response to the ``g'' |
236 | packet. It is used as a heuristic when determining the maximum | |
237 | size of memory-read and memory-write packets. A target will | |
238 | typically only reserve a buffer large enough to hold the ``g'' | |
239 | packet. The size does not include packet overhead (headers and | |
240 | trailers). */ | |
241 | long actual_register_packet_size; | |
242 | ||
243 | /* This is the maximum size (in chars) of a non read/write packet. | |
244 | It is also used as a cap on the size of read/write packets. */ | |
245 | long remote_packet_size; | |
246 | }; | |
247 | ||
248 | /* Handle for retreving the remote protocol data from gdbarch. */ | |
249 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
250 | ||
251 | static struct remote_state * | |
252 | get_remote_state () | |
253 | { | |
254 | return gdbarch_data (remote_gdbarch_data_handle); | |
255 | } | |
256 | ||
257 | static void * | |
258 | init_remote_state (struct gdbarch *gdbarch) | |
259 | { | |
260 | int regnum; | |
261 | struct remote_state *rs = xmalloc (sizeof (struct remote_state)); | |
262 | ||
ad10f812 AC |
263 | /* Start out by having the remote protocol mimic the existing |
264 | behavour - just copy in the description of the register cache. */ | |
265 | rs->sizeof_g_packet = REGISTER_BYTES; /* OK use. */ | |
266 | ||
267 | /* Since, for the moment, the regcache is still being direct mapped, | |
268 | there are exactly NUM_REGS. Zero allocate a buffer adding space | |
269 | for a sentinal. */ | |
270 | rs->g_packet = xcalloc (NUM_REGS + 1, sizeof (struct packet_reg)); | |
271 | rs->g_packet[NUM_REGS].offset = -1; | |
272 | for (regnum = 0; regnum < NUM_REGS; regnum++) | |
273 | { | |
274 | rs->g_packet[regnum].pnum = regnum; | |
275 | rs->g_packet[regnum].regnum = regnum; | |
276 | rs->g_packet[regnum].offset = REGISTER_BYTE (regnum); | |
277 | /* ...size = REGISTER_RAW_SIZE (regnum); */ | |
278 | /* ...name = REGISTER_NAME (regnum); */ | |
279 | } | |
280 | ||
d01949b6 AC |
281 | /* Default maximum number of characters in a packet body. Many |
282 | remote stubs have a hardwired buffer size of 400 bytes | |
283 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
284 | as the maximum packet-size to ensure that the packet and an extra | |
285 | NUL character can always fit in the buffer. This stops GDB | |
286 | trashing stubs that try to squeeze an extra NUL into what is | |
287 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
288 | rs->remote_packet_size = 400 - 1; | |
289 | ||
ad10f812 AC |
290 | /* Should rs->sizeof_g_packet needs more space than the |
291 | default, adjust the size accordingly. Remember that each byte is | |
292 | encoded as two characters. 32 is the overhead for the packet | |
293 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 AC |
294 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
295 | little. */ | |
ad10f812 AC |
296 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
297 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
d01949b6 AC |
298 | |
299 | /* This one is filled in when a ``g'' packet is received. */ | |
300 | rs->actual_register_packet_size = 0; | |
301 | ||
302 | return rs; | |
303 | } | |
304 | ||
305 | static void | |
306 | free_remote_state (struct gdbarch *gdbarch, void *pointer) | |
307 | { | |
ad10f812 AC |
308 | struct remote_state *data = pointer; |
309 | xfree (data->g_packet); | |
310 | xfree (data); | |
311 | } | |
312 | ||
313 | static struct packet_reg * | |
314 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
315 | { | |
316 | struct packet_reg *reg; | |
317 | for (reg = rs->g_packet; reg->offset >= 0; reg++) | |
318 | { | |
319 | if (reg->regnum == regnum) | |
320 | return reg; | |
321 | } | |
322 | return NULL; | |
323 | } | |
324 | ||
325 | static struct packet_reg * | |
326 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
327 | { | |
328 | struct packet_reg *reg; | |
329 | for (reg = rs->g_packet; reg->offset >= 0; reg++) | |
330 | { | |
331 | if (reg->pnum == pnum) | |
332 | return reg; | |
333 | } | |
334 | return NULL; | |
d01949b6 AC |
335 | } |
336 | ||
c906108c SS |
337 | /* */ |
338 | ||
339 | static struct target_ops remote_ops; | |
340 | ||
341 | static struct target_ops extended_remote_ops; | |
342 | ||
43ff13b4 JM |
343 | /* Temporary target ops. Just like the remote_ops and |
344 | extended_remote_ops, but with asynchronous support. */ | |
345 | static struct target_ops remote_async_ops; | |
346 | ||
347 | static struct target_ops extended_async_remote_ops; | |
348 | ||
6426a772 JM |
349 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
350 | ``forever'' still use the normal timeout mechanism. This is | |
351 | currently used by the ASYNC code to guarentee that target reads | |
352 | during the initial connect always time-out. Once getpkt has been | |
353 | modified to return a timeout indication and, in turn | |
354 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
355 | this can go away. */ | |
356 | static int wait_forever_enabled_p = 1; | |
357 | ||
358 | ||
c906108c SS |
359 | /* This variable chooses whether to send a ^C or a break when the user |
360 | requests program interruption. Although ^C is usually what remote | |
361 | systems expect, and that is the default here, sometimes a break is | |
362 | preferable instead. */ | |
363 | ||
364 | static int remote_break; | |
365 | ||
c906108c SS |
366 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
367 | remote_open knows that we don't have a file open when the program | |
368 | starts. */ | |
819cc324 | 369 | static struct serial *remote_desc = NULL; |
c906108c | 370 | |
0f71a2f6 JM |
371 | /* This is set by the target (thru the 'S' message) |
372 | to denote that the target is in kernel mode. */ | |
373 | static int cisco_kernel_mode = 0; | |
374 | ||
c906108c SS |
375 | /* This variable sets the number of bits in an address that are to be |
376 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
377 | leading zeros, the entire address would be sent. This variable | |
378 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
379 | initial implementation of remote.c restricted the address sent in | |
380 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
381 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
382 | address was never sent. Since fixing this bug may cause a break in | |
383 | some remote targets this variable is principly provided to | |
384 | facilitate backward compatibility. */ | |
385 | ||
386 | static int remote_address_size; | |
387 | ||
6426a772 JM |
388 | /* Tempoary to track who currently owns the terminal. See |
389 | target_async_terminal_* for more details. */ | |
390 | ||
391 | static int remote_async_terminal_ours_p; | |
392 | ||
11cf8741 | 393 | \f |
11cf8741 | 394 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
395 | memory read/write packet. MIN ((rs->remote_packet_size), |
396 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
397 | values (fifo overruns, et.al.) and some users need larger values | |
398 | (speed up transfers). The variables ``preferred_*'' (the user | |
399 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
400 | (Positive - a soft limit, negative - a hard limit). */ | |
11cf8741 JM |
401 | |
402 | struct memory_packet_config | |
403 | { | |
404 | char *name; | |
405 | long size; | |
406 | int fixed_p; | |
407 | }; | |
408 | ||
409 | /* Compute the current size of a read/write packet. Since this makes | |
410 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
411 | ||
412 | static long | |
413 | get_memory_packet_size (struct memory_packet_config *config) | |
414 | { | |
d01949b6 | 415 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
416 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
417 | law?) that some hosts don't cope very well with large alloca() | |
418 | calls. Eventually the alloca() code will be replaced by calls to | |
419 | xmalloc() and make_cleanups() allowing this restriction to either | |
420 | be lifted or removed. */ | |
421 | #ifndef MAX_REMOTE_PACKET_SIZE | |
422 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
423 | #endif | |
424 | /* NOTE: 16 is just chosen at random. */ | |
425 | #ifndef MIN_REMOTE_PACKET_SIZE | |
426 | #define MIN_REMOTE_PACKET_SIZE 16 | |
427 | #endif | |
428 | long what_they_get; | |
429 | if (config->fixed_p) | |
430 | { | |
431 | if (config->size <= 0) | |
432 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
433 | else | |
434 | what_they_get = config->size; | |
435 | } | |
436 | else | |
437 | { | |
d01949b6 | 438 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
439 | /* Limit the packet to the size specified by the user. */ |
440 | if (config->size > 0 | |
441 | && what_they_get > config->size) | |
442 | what_they_get = config->size; | |
443 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
444 | if ((rs->actual_register_packet_size) > 0 |
445 | && what_they_get > (rs->actual_register_packet_size)) | |
446 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
447 | } |
448 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
449 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
450 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
451 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
452 | return what_they_get; | |
453 | } | |
454 | ||
455 | /* Update the size of a read/write packet. If they user wants | |
456 | something really big then do a sanity check. */ | |
457 | ||
458 | static void | |
459 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
460 | { | |
461 | int fixed_p = config->fixed_p; | |
462 | long size = config->size; | |
463 | if (args == NULL) | |
464 | error ("Argument required (integer, `fixed' or `limited')."); | |
465 | else if (strcmp (args, "hard") == 0 | |
466 | || strcmp (args, "fixed") == 0) | |
467 | fixed_p = 1; | |
468 | else if (strcmp (args, "soft") == 0 | |
469 | || strcmp (args, "limit") == 0) | |
470 | fixed_p = 0; | |
471 | else | |
472 | { | |
473 | char *end; | |
474 | size = strtoul (args, &end, 0); | |
475 | if (args == end) | |
476 | error ("Invalid %s (bad syntax).", config->name); | |
477 | #if 0 | |
478 | /* Instead of explicitly capping the size of a packet to | |
479 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
480 | instead allowed to set the size to something arbitrarily | |
481 | large. */ | |
482 | if (size > MAX_REMOTE_PACKET_SIZE) | |
483 | error ("Invalid %s (too large).", config->name); | |
484 | #endif | |
485 | } | |
486 | /* Extra checks? */ | |
487 | if (fixed_p && !config->fixed_p) | |
488 | { | |
489 | if (! query ("The target may not be able to correctly handle a %s\n" | |
490 | "of %ld bytes. Change the packet size? ", | |
491 | config->name, size)) | |
492 | error ("Packet size not changed."); | |
493 | } | |
494 | /* Update the config. */ | |
495 | config->fixed_p = fixed_p; | |
496 | config->size = size; | |
497 | } | |
498 | ||
499 | static void | |
500 | show_memory_packet_size (struct memory_packet_config *config) | |
501 | { | |
502 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
503 | if (config->fixed_p) | |
504 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
505 | get_memory_packet_size (config)); | |
506 | else | |
507 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
508 | get_memory_packet_size (config)); | |
509 | } | |
510 | ||
511 | static struct memory_packet_config memory_write_packet_config = | |
512 | { | |
513 | "memory-write-packet-size", | |
514 | }; | |
515 | ||
516 | static void | |
517 | set_memory_write_packet_size (char *args, int from_tty) | |
518 | { | |
519 | set_memory_packet_size (args, &memory_write_packet_config); | |
520 | } | |
521 | ||
522 | static void | |
523 | show_memory_write_packet_size (char *args, int from_tty) | |
524 | { | |
525 | show_memory_packet_size (&memory_write_packet_config); | |
526 | } | |
527 | ||
528 | static long | |
529 | get_memory_write_packet_size (void) | |
530 | { | |
531 | return get_memory_packet_size (&memory_write_packet_config); | |
532 | } | |
533 | ||
534 | static struct memory_packet_config memory_read_packet_config = | |
535 | { | |
536 | "memory-read-packet-size", | |
537 | }; | |
538 | ||
539 | static void | |
540 | set_memory_read_packet_size (char *args, int from_tty) | |
541 | { | |
542 | set_memory_packet_size (args, &memory_read_packet_config); | |
543 | } | |
544 | ||
545 | static void | |
546 | show_memory_read_packet_size (char *args, int from_tty) | |
547 | { | |
548 | show_memory_packet_size (&memory_read_packet_config); | |
549 | } | |
550 | ||
551 | static long | |
552 | get_memory_read_packet_size (void) | |
553 | { | |
d01949b6 | 554 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
555 | long size = get_memory_packet_size (&memory_read_packet_config); |
556 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
557 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
558 | increased beyond (rs->remote_packet_size). */ |
559 | if (size > (rs->remote_packet_size)) | |
560 | size = (rs->remote_packet_size); | |
11cf8741 JM |
561 | return size; |
562 | } | |
563 | ||
11cf8741 | 564 | \f |
5a2468f5 JM |
565 | /* Generic configuration support for packets the stub optionally |
566 | supports. Allows the user to specify the use of the packet as well | |
567 | as allowing GDB to auto-detect support in the remote stub. */ | |
568 | ||
569 | enum packet_support | |
570 | { | |
571 | PACKET_SUPPORT_UNKNOWN = 0, | |
572 | PACKET_ENABLE, | |
573 | PACKET_DISABLE | |
574 | }; | |
575 | ||
5a2468f5 JM |
576 | struct packet_config |
577 | { | |
5a2468f5 JM |
578 | char *name; |
579 | char *title; | |
8e248173 | 580 | enum cmd_auto_boolean detect; |
5a2468f5 JM |
581 | enum packet_support support; |
582 | }; | |
583 | ||
d471ea57 AC |
584 | /* Analyze a packet's return value and update the packet config |
585 | accordingly. */ | |
586 | ||
587 | enum packet_result | |
588 | { | |
589 | PACKET_ERROR, | |
590 | PACKET_OK, | |
591 | PACKET_UNKNOWN | |
592 | }; | |
593 | ||
5a2468f5 | 594 | static void |
d471ea57 | 595 | update_packet_config (struct packet_config *config) |
5a2468f5 | 596 | { |
d471ea57 AC |
597 | switch (config->detect) |
598 | { | |
599 | case CMD_AUTO_BOOLEAN_TRUE: | |
600 | config->support = PACKET_ENABLE; | |
601 | break; | |
602 | case CMD_AUTO_BOOLEAN_FALSE: | |
603 | config->support = PACKET_DISABLE; | |
604 | break; | |
605 | case CMD_AUTO_BOOLEAN_AUTO: | |
606 | config->support = PACKET_SUPPORT_UNKNOWN; | |
607 | break; | |
608 | } | |
5a2468f5 JM |
609 | } |
610 | ||
611 | static void | |
fba45db2 | 612 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
613 | { |
614 | char *support = "internal-error"; | |
615 | switch (config->support) | |
616 | { | |
617 | case PACKET_ENABLE: | |
618 | support = "enabled"; | |
619 | break; | |
620 | case PACKET_DISABLE: | |
621 | support = "disabled"; | |
622 | break; | |
623 | case PACKET_SUPPORT_UNKNOWN: | |
624 | support = "unknown"; | |
625 | break; | |
626 | } | |
627 | switch (config->detect) | |
628 | { | |
8e248173 | 629 | case CMD_AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
630 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
631 | config->name, config->title, support); | |
632 | break; | |
8e248173 AC |
633 | case CMD_AUTO_BOOLEAN_TRUE: |
634 | case CMD_AUTO_BOOLEAN_FALSE: | |
635 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", | |
5a2468f5 | 636 | config->name, config->title, support); |
8e248173 | 637 | break; |
5a2468f5 JM |
638 | } |
639 | } | |
640 | ||
641 | static void | |
d471ea57 AC |
642 | add_packet_config_cmd (struct packet_config *config, |
643 | char *name, | |
644 | char *title, | |
645 | void (*set_func) (char *args, int from_tty, | |
646 | struct cmd_list_element * | |
647 | c), | |
648 | void (*show_func) (char *name, | |
649 | int from_tty), | |
650 | struct cmd_list_element **set_remote_list, | |
651 | struct cmd_list_element **show_remote_list, | |
652 | int legacy) | |
653 | { | |
654 | struct cmd_list_element *set_cmd; | |
655 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
656 | char *set_doc; |
657 | char *show_doc; | |
d471ea57 | 658 | char *cmd_name; |
5a2468f5 JM |
659 | config->name = name; |
660 | config->title = title; | |
8e248173 AC |
661 | config->detect = CMD_AUTO_BOOLEAN_AUTO; |
662 | config->support = PACKET_SUPPORT_UNKNOWN; | |
76995688 AC |
663 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
664 | name, title); | |
665 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
666 | name, title); | |
d471ea57 | 667 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 668 | xasprintf (&cmd_name, "%s-packet", title); |
d471ea57 AC |
669 | set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure, |
670 | &config->detect, set_doc, | |
671 | set_remote_list); | |
672 | set_cmd->function.sfunc = set_func; | |
673 | show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc, | |
674 | show_remote_list); | |
675 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ | |
676 | if (legacy) | |
677 | { | |
678 | char *legacy_name; | |
76995688 | 679 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
680 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
681 | set_remote_list); | |
682 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
683 | show_remote_list); | |
684 | } | |
5a2468f5 JM |
685 | } |
686 | ||
d471ea57 AC |
687 | static enum packet_result |
688 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 689 | { |
d471ea57 | 690 | if (buf[0] != '\0') |
5a2468f5 | 691 | { |
d471ea57 AC |
692 | /* The stub recognized the packet request. Check that the |
693 | operation succeeded. */ | |
694 | switch (config->support) | |
695 | { | |
696 | case PACKET_SUPPORT_UNKNOWN: | |
697 | if (remote_debug) | |
698 | fprintf_unfiltered (gdb_stdlog, | |
699 | "Packet %s (%s) is supported\n", | |
700 | config->name, config->title); | |
701 | config->support = PACKET_ENABLE; | |
702 | break; | |
703 | case PACKET_DISABLE: | |
8e65ff28 AC |
704 | internal_error (__FILE__, __LINE__, |
705 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
706 | break; |
707 | case PACKET_ENABLE: | |
708 | break; | |
709 | } | |
710 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
711 | /* "OK" - definitly OK. */ | |
712 | return PACKET_OK; | |
713 | if (buf[0] == 'E' | |
714 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
715 | && buf[3] == '\0') | |
716 | /* "Enn" - definitly an error. */ | |
717 | return PACKET_ERROR; | |
718 | /* The packet may or may not be OK. Just assume it is */ | |
719 | return PACKET_OK; | |
720 | } | |
721 | else | |
722 | { | |
723 | /* The stub does not support the packet. */ | |
724 | switch (config->support) | |
725 | { | |
726 | case PACKET_ENABLE: | |
727 | if (config->detect == CMD_AUTO_BOOLEAN_AUTO) | |
728 | /* If the stub previously indicated that the packet was | |
729 | supported then there is a protocol error.. */ | |
730 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
731 | config->name, config->title); | |
732 | else | |
733 | /* The user set it wrong. */ | |
734 | error ("Enabled packet %s (%s) not recognized by stub", | |
735 | config->name, config->title); | |
736 | break; | |
737 | case PACKET_SUPPORT_UNKNOWN: | |
738 | if (remote_debug) | |
739 | fprintf_unfiltered (gdb_stdlog, | |
740 | "Packet %s (%s) is NOT supported\n", | |
741 | config->name, config->title); | |
742 | config->support = PACKET_DISABLE; | |
743 | break; | |
744 | case PACKET_DISABLE: | |
745 | break; | |
746 | } | |
747 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
748 | } |
749 | } | |
750 | ||
dc8acb97 MS |
751 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
752 | static struct packet_config remote_protocol_qSymbol; | |
753 | ||
754 | static void | |
755 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
756 | struct cmd_list_element *c) | |
757 | { | |
758 | update_packet_config (&remote_protocol_qSymbol); | |
759 | } | |
760 | ||
761 | static void | |
762 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty) | |
763 | { | |
764 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
765 | } | |
766 | ||
44eaed12 C |
767 | /* Should we try the 'e' (step over range) request? */ |
768 | static struct packet_config remote_protocol_e; | |
769 | ||
770 | static void | |
771 | set_remote_protocol_e_packet_cmd (char *args, int from_tty, | |
772 | struct cmd_list_element *c) | |
773 | { | |
774 | update_packet_config (&remote_protocol_e); | |
775 | } | |
776 | ||
777 | static void | |
778 | show_remote_protocol_e_packet_cmd (char *args, int from_tty) | |
779 | { | |
780 | show_packet_config_cmd (&remote_protocol_e); | |
781 | } | |
782 | ||
783 | ||
784 | /* Should we try the 'E' (step over range / w signal #) request? */ | |
785 | static struct packet_config remote_protocol_E; | |
786 | ||
787 | static void | |
788 | set_remote_protocol_E_packet_cmd (char *args, int from_tty, | |
789 | struct cmd_list_element *c) | |
790 | { | |
791 | update_packet_config (&remote_protocol_E); | |
792 | } | |
793 | ||
794 | static void | |
795 | show_remote_protocol_E_packet_cmd (char *args, int from_tty) | |
796 | { | |
797 | show_packet_config_cmd (&remote_protocol_E); | |
798 | } | |
799 | ||
800 | ||
5a2468f5 JM |
801 | /* Should we try the 'P' (set register) request? */ |
802 | ||
803 | static struct packet_config remote_protocol_P; | |
804 | ||
805 | static void | |
fba45db2 KB |
806 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
807 | struct cmd_list_element *c) | |
5a2468f5 | 808 | { |
d471ea57 | 809 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
810 | } |
811 | ||
812 | static void | |
fba45db2 | 813 | show_remote_protocol_P_packet_cmd (char *args, int from_tty) |
5a2468f5 JM |
814 | { |
815 | show_packet_config_cmd (&remote_protocol_P); | |
816 | } | |
817 | ||
d471ea57 AC |
818 | /* Should we try one of the 'Z' requests? */ |
819 | ||
820 | enum Z_packet_type | |
821 | { | |
822 | Z_PACKET_SOFTWARE_BP, | |
823 | Z_PACKET_HARDWARE_BP, | |
824 | Z_PACKET_WRITE_WP, | |
825 | Z_PACKET_READ_WP, | |
826 | Z_PACKET_ACCESS_WP, | |
827 | NR_Z_PACKET_TYPES | |
828 | }; | |
96baa820 | 829 | |
d471ea57 AC |
830 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
831 | ||
832 | /* FIXME: Instead of having all these boiler plate functions, the | |
833 | command callback should include a context argument. */ | |
834 | ||
835 | static void | |
836 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
837 | struct cmd_list_element *c) | |
838 | { | |
839 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
840 | } | |
841 | ||
842 | static void | |
843 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty) | |
844 | { | |
845 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
846 | } | |
847 | ||
848 | static void | |
849 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
850 | struct cmd_list_element *c) | |
851 | { | |
852 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
853 | } | |
854 | ||
855 | static void | |
856 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty) | |
857 | { | |
858 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
859 | } | |
860 | ||
861 | static void | |
862 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
863 | struct cmd_list_element *c) | |
864 | { | |
865 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
866 | } | |
867 | ||
868 | static void | |
869 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty) | |
870 | { | |
871 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
872 | } | |
873 | ||
874 | static void | |
875 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
876 | struct cmd_list_element *c) | |
877 | { | |
878 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
879 | } | |
880 | ||
881 | static void | |
882 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty) | |
883 | { | |
884 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
885 | } | |
886 | ||
887 | static void | |
888 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
889 | struct cmd_list_element *c) | |
890 | { | |
891 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
892 | } | |
893 | ||
894 | static void | |
895 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty) | |
896 | { | |
897 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
898 | } | |
899 | ||
900 | /* For compatibility with older distributions. Provide a ``set remote | |
901 | Z-packet ...'' command that updates all the Z packet types. */ | |
902 | ||
903 | static enum cmd_auto_boolean remote_Z_packet_detect; | |
96baa820 JM |
904 | |
905 | static void | |
fba45db2 KB |
906 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
907 | struct cmd_list_element *c) | |
96baa820 | 908 | { |
d471ea57 AC |
909 | int i; |
910 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
911 | { | |
912 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
913 | update_packet_config (&remote_protocol_Z[i]); | |
914 | } | |
96baa820 JM |
915 | } |
916 | ||
917 | static void | |
fba45db2 | 918 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty) |
96baa820 | 919 | { |
d471ea57 AC |
920 | int i; |
921 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
922 | { | |
923 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
924 | } | |
96baa820 JM |
925 | } |
926 | ||
927 | /* Should we try the 'X' (remote binary download) packet? | |
928 | ||
929 | This variable (available to the user via "set remote X-packet") | |
930 | dictates whether downloads are sent in binary (via the 'X' packet). | |
931 | We assume that the stub can, and attempt to do it. This will be | |
932 | cleared if the stub does not understand it. This switch is still | |
933 | needed, though in cases when the packet is supported in the stub, | |
934 | but the connection does not allow it (i.e., 7-bit serial connection | |
935 | only). */ | |
936 | ||
937 | static struct packet_config remote_protocol_binary_download; | |
938 | ||
9d1f7ab2 MS |
939 | /* Should we try the 'ThreadInfo' query packet? |
940 | ||
941 | This variable (NOT available to the user: auto-detect only!) | |
942 | determines whether GDB will use the new, simpler "ThreadInfo" | |
943 | query or the older, more complex syntax for thread queries. | |
944 | This is an auto-detect variable (set to true at each connect, | |
945 | and set to false when the target fails to recognize it). */ | |
946 | ||
947 | static int use_threadinfo_query; | |
948 | static int use_threadextra_query; | |
949 | ||
96baa820 JM |
950 | static void |
951 | set_remote_protocol_binary_download_cmd (char *args, | |
952 | int from_tty, | |
953 | struct cmd_list_element *c) | |
954 | { | |
d471ea57 | 955 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
956 | } |
957 | ||
958 | static void | |
959 | show_remote_protocol_binary_download_cmd (char *args, | |
960 | int from_tty) | |
961 | { | |
962 | show_packet_config_cmd (&remote_protocol_binary_download); | |
963 | } | |
964 | ||
c906108c | 965 | |
43ff13b4 JM |
966 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
967 | PTR sigint_remote_twice_token; | |
968 | PTR sigint_remote_token; | |
969 | ||
c906108c SS |
970 | /* These are pointers to hook functions that may be set in order to |
971 | modify resume/wait behavior for a particular architecture. */ | |
972 | ||
507f3c78 KB |
973 | void (*target_resume_hook) (void); |
974 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
975 | \f |
976 | ||
c5aa993b | 977 | |
c906108c SS |
978 | /* These are the threads which we last sent to the remote system. |
979 | -1 for all or -2 for not sent yet. */ | |
980 | static int general_thread; | |
cce74817 | 981 | static int continue_thread; |
c906108c SS |
982 | |
983 | /* Call this function as a result of | |
984 | 1) A halt indication (T packet) containing a thread id | |
985 | 2) A direct query of currthread | |
986 | 3) Successful execution of set thread | |
987 | */ | |
988 | ||
989 | static void | |
fba45db2 | 990 | record_currthread (int currthread) |
c906108c | 991 | { |
c906108c | 992 | general_thread = currthread; |
cce74817 | 993 | |
c906108c SS |
994 | /* If this is a new thread, add it to GDB's thread list. |
995 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 996 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 997 | { |
39f77062 | 998 | add_thread (pid_to_ptid (currthread)); |
8b93c638 JM |
999 | #ifdef UI_OUT |
1000 | ui_out_text (uiout, "[New "); | |
39f77062 | 1001 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 JM |
1002 | ui_out_text (uiout, "]\n"); |
1003 | #else | |
39f77062 KB |
1004 | printf_filtered ("[New %s]\n", |
1005 | target_pid_to_str (pid_to_ptid (currthread))); | |
8b93c638 | 1006 | #endif |
0f71a2f6 | 1007 | } |
c906108c SS |
1008 | } |
1009 | ||
1010 | #define MAGIC_NULL_PID 42000 | |
1011 | ||
1012 | static void | |
fba45db2 | 1013 | set_thread (int th, int gen) |
c906108c | 1014 | { |
d01949b6 AC |
1015 | struct remote_state *rs = get_remote_state (); |
1016 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1017 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1018 | |
1019 | if (state == th) | |
1020 | return; | |
1021 | ||
1022 | buf[0] = 'H'; | |
1023 | buf[1] = gen ? 'g' : 'c'; | |
1024 | if (th == MAGIC_NULL_PID) | |
1025 | { | |
1026 | buf[2] = '0'; | |
1027 | buf[3] = '\0'; | |
1028 | } | |
1029 | else if (th < 0) | |
1030 | sprintf (&buf[2], "-%x", -th); | |
1031 | else | |
1032 | sprintf (&buf[2], "%x", th); | |
1033 | putpkt (buf); | |
d01949b6 | 1034 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1035 | if (gen) |
c5aa993b | 1036 | general_thread = th; |
c906108c | 1037 | else |
cce74817 | 1038 | continue_thread = th; |
c906108c SS |
1039 | } |
1040 | \f | |
1041 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1042 | ||
1043 | static int | |
39f77062 | 1044 | remote_thread_alive (ptid_t ptid) |
c906108c | 1045 | { |
39f77062 | 1046 | int tid = PIDGET (ptid); |
cce74817 | 1047 | char buf[16]; |
c906108c | 1048 | |
cce74817 JM |
1049 | if (tid < 0) |
1050 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1051 | else |
cce74817 | 1052 | sprintf (buf, "T%08x", tid); |
c906108c | 1053 | putpkt (buf); |
c2d11a7d | 1054 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1055 | return (buf[0] == 'O' && buf[1] == 'K'); |
1056 | } | |
1057 | ||
1058 | /* About these extended threadlist and threadinfo packets. They are | |
1059 | variable length packets but, the fields within them are often fixed | |
1060 | length. They are redundent enough to send over UDP as is the | |
1061 | remote protocol in general. There is a matching unit test module | |
1062 | in libstub. */ | |
1063 | ||
cce74817 JM |
1064 | #define OPAQUETHREADBYTES 8 |
1065 | ||
1066 | /* a 64 bit opaque identifier */ | |
1067 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1068 | ||
1069 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1070 | protocol encoding, and remote.c. it is not particularly changable */ | |
1071 | ||
1072 | /* Right now, the internal structure is int. We want it to be bigger. | |
1073 | Plan to fix this. | |
c5aa993b | 1074 | */ |
cce74817 | 1075 | |
c5aa993b | 1076 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1077 | |
9d1f7ab2 | 1078 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1079 | equivalint to the reply of the remote threadinfo packet */ |
1080 | ||
1081 | struct gdb_ext_thread_info | |
c5aa993b JM |
1082 | { |
1083 | threadref threadid; /* External form of thread reference */ | |
1084 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1085 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1086 | char shortname[32]; /* To be used to name threads */ | |
1087 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1088 | }; | |
cce74817 JM |
1089 | |
1090 | /* The volume of remote transfers can be limited by submitting | |
1091 | a mask containing bits specifying the desired information. | |
1092 | Use a union of these values as the 'selection' parameter to | |
1093 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1094 | */ |
cce74817 JM |
1095 | |
1096 | #define TAG_THREADID 1 | |
1097 | #define TAG_EXISTS 2 | |
1098 | #define TAG_DISPLAY 4 | |
1099 | #define TAG_THREADNAME 8 | |
c5aa993b | 1100 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1101 | |
c906108c SS |
1102 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1103 | ||
a14ed312 | 1104 | char *unpack_varlen_hex (char *buff, int *result); |
cce74817 | 1105 | |
a14ed312 | 1106 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1107 | |
a14ed312 | 1108 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1109 | |
a14ed312 | 1110 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1111 | |
a14ed312 | 1112 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1113 | |
a14ed312 | 1114 | static char *pack_int (char *buf, int value); |
cce74817 | 1115 | |
a14ed312 | 1116 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1117 | |
a14ed312 | 1118 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1119 | |
a14ed312 | 1120 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1121 | |
a14ed312 | 1122 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1123 | |
a14ed312 | 1124 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1125 | |
a14ed312 | 1126 | static int threadref_to_int (threadref * ref); |
cce74817 | 1127 | |
a14ed312 | 1128 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1129 | |
a14ed312 | 1130 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1131 | |
a14ed312 | 1132 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1133 | |
a14ed312 KB |
1134 | static int remote_unpack_thread_info_response (char *pkt, |
1135 | threadref * expectedref, | |
1136 | struct gdb_ext_thread_info | |
1137 | *info); | |
cce74817 JM |
1138 | |
1139 | ||
a14ed312 KB |
1140 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1141 | struct gdb_ext_thread_info *info); | |
cce74817 | 1142 | |
a14ed312 KB |
1143 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1144 | int selection, | |
1145 | struct gdb_ext_thread_info *info); | |
cce74817 | 1146 | |
a14ed312 KB |
1147 | static char *pack_threadlist_request (char *pkt, int startflag, |
1148 | int threadcount, | |
1149 | threadref * nextthread); | |
cce74817 | 1150 | |
a14ed312 KB |
1151 | static int parse_threadlist_response (char *pkt, |
1152 | int result_limit, | |
1153 | threadref * original_echo, | |
1154 | threadref * resultlist, int *doneflag); | |
cce74817 | 1155 | |
a14ed312 KB |
1156 | static int remote_get_threadlist (int startflag, |
1157 | threadref * nextthread, | |
1158 | int result_limit, | |
1159 | int *done, | |
1160 | int *result_count, threadref * threadlist); | |
cce74817 | 1161 | |
c5aa993b | 1162 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1163 | |
a14ed312 KB |
1164 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1165 | void *context, int looplimit); | |
cce74817 | 1166 | |
a14ed312 | 1167 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1168 | |
c906108c SS |
1169 | /* encode 64 bits in 16 chars of hex */ |
1170 | ||
1171 | static const char hexchars[] = "0123456789abcdef"; | |
1172 | ||
1173 | static int | |
fba45db2 | 1174 | ishex (int ch, int *val) |
c906108c SS |
1175 | { |
1176 | if ((ch >= 'a') && (ch <= 'f')) | |
1177 | { | |
1178 | *val = ch - 'a' + 10; | |
1179 | return 1; | |
1180 | } | |
1181 | if ((ch >= 'A') && (ch <= 'F')) | |
1182 | { | |
1183 | *val = ch - 'A' + 10; | |
1184 | return 1; | |
1185 | } | |
1186 | if ((ch >= '0') && (ch <= '9')) | |
1187 | { | |
1188 | *val = ch - '0'; | |
1189 | return 1; | |
1190 | } | |
1191 | return 0; | |
1192 | } | |
1193 | ||
1194 | static int | |
fba45db2 | 1195 | stubhex (int ch) |
c906108c SS |
1196 | { |
1197 | if (ch >= 'a' && ch <= 'f') | |
1198 | return ch - 'a' + 10; | |
1199 | if (ch >= '0' && ch <= '9') | |
1200 | return ch - '0'; | |
1201 | if (ch >= 'A' && ch <= 'F') | |
1202 | return ch - 'A' + 10; | |
1203 | return -1; | |
1204 | } | |
1205 | ||
1206 | static int | |
fba45db2 | 1207 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1208 | { |
1209 | int nibble; | |
1210 | int retval = 0; | |
1211 | ||
1212 | while (fieldlength) | |
1213 | { | |
1214 | nibble = stubhex (*buff++); | |
1215 | retval |= nibble; | |
1216 | fieldlength--; | |
1217 | if (fieldlength) | |
1218 | retval = retval << 4; | |
1219 | } | |
1220 | return retval; | |
1221 | } | |
1222 | ||
1223 | char * | |
fba45db2 KB |
1224 | unpack_varlen_hex (char *buff, /* packet to parse */ |
1225 | int *result) | |
c906108c SS |
1226 | { |
1227 | int nibble; | |
1228 | int retval = 0; | |
1229 | ||
1230 | while (ishex (*buff, &nibble)) | |
1231 | { | |
1232 | buff++; | |
1233 | retval = retval << 4; | |
1234 | retval |= nibble & 0x0f; | |
1235 | } | |
1236 | *result = retval; | |
1237 | return buff; | |
1238 | } | |
1239 | ||
1240 | static char * | |
fba45db2 | 1241 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1242 | { |
1243 | ishex (*buf++, val); | |
1244 | return buf; | |
1245 | } | |
1246 | ||
1247 | static char * | |
fba45db2 | 1248 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1249 | { |
1250 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1251 | return buf; | |
1252 | } | |
1253 | ||
1254 | static char * | |
fba45db2 | 1255 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1256 | { |
1257 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1258 | *pkt++ = hexchars[(byte & 0xf)]; | |
1259 | return pkt; | |
1260 | } | |
1261 | ||
1262 | static char * | |
fba45db2 | 1263 | unpack_byte (char *buf, int *value) |
c906108c SS |
1264 | { |
1265 | *value = stub_unpack_int (buf, 2); | |
1266 | return buf + 2; | |
1267 | } | |
1268 | ||
1269 | static char * | |
fba45db2 | 1270 | pack_int (char *buf, int value) |
c906108c SS |
1271 | { |
1272 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1273 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1274 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1275 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1276 | return buf; | |
1277 | } | |
1278 | ||
1279 | static char * | |
fba45db2 | 1280 | unpack_int (char *buf, int *value) |
c906108c SS |
1281 | { |
1282 | *value = stub_unpack_int (buf, 8); | |
1283 | return buf + 8; | |
1284 | } | |
1285 | ||
c5aa993b | 1286 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1287 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1288 | |
1289 | static char * | |
fba45db2 | 1290 | pack_string (char *pkt, char *string) |
c906108c SS |
1291 | { |
1292 | char ch; | |
1293 | int len; | |
1294 | ||
1295 | len = strlen (string); | |
1296 | if (len > 200) | |
1297 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1298 | pkt = pack_hex_byte (pkt, len); | |
1299 | while (len-- > 0) | |
1300 | { | |
1301 | ch = *string++; | |
1302 | if ((ch == '\0') || (ch == '#')) | |
1303 | ch = '*'; /* Protect encapsulation */ | |
1304 | *pkt++ = ch; | |
1305 | } | |
1306 | return pkt; | |
1307 | } | |
1308 | #endif /* 0 (unused) */ | |
1309 | ||
1310 | static char * | |
fba45db2 | 1311 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1312 | { |
1313 | while (length--) | |
1314 | *dest++ = *src++; | |
1315 | *dest = '\0'; | |
1316 | return src; | |
1317 | } | |
1318 | ||
1319 | static char * | |
fba45db2 | 1320 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1321 | { |
1322 | char *limit; | |
1323 | unsigned char *altid; | |
1324 | ||
1325 | altid = (unsigned char *) id; | |
1326 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1327 | while (pkt < limit) | |
1328 | pkt = pack_hex_byte (pkt, *altid++); | |
1329 | return pkt; | |
1330 | } | |
1331 | ||
1332 | ||
1333 | static char * | |
fba45db2 | 1334 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1335 | { |
1336 | char *altref; | |
1337 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1338 | int x, y; | |
1339 | ||
1340 | altref = (char *) id; | |
1341 | ||
1342 | while (inbuf < limit) | |
1343 | { | |
1344 | x = stubhex (*inbuf++); | |
1345 | y = stubhex (*inbuf++); | |
1346 | *altref++ = (x << 4) | y; | |
1347 | } | |
1348 | return inbuf; | |
1349 | } | |
1350 | ||
1351 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1352 | ints. This is due to a mismatch of specifications. We would like | |
1353 | to use 64bit thread references internally. This is an adapter | |
1354 | function. */ | |
1355 | ||
1356 | void | |
fba45db2 | 1357 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1358 | { |
1359 | unsigned char *scan; | |
1360 | ||
1361 | scan = (unsigned char *) id; | |
1362 | { | |
1363 | int i = 4; | |
1364 | while (i--) | |
1365 | *scan++ = 0; | |
1366 | } | |
1367 | *scan++ = (value >> 24) & 0xff; | |
1368 | *scan++ = (value >> 16) & 0xff; | |
1369 | *scan++ = (value >> 8) & 0xff; | |
1370 | *scan++ = (value & 0xff); | |
1371 | } | |
1372 | ||
1373 | static int | |
fba45db2 | 1374 | threadref_to_int (threadref *ref) |
c906108c SS |
1375 | { |
1376 | int i, value = 0; | |
1377 | unsigned char *scan; | |
1378 | ||
1379 | scan = (char *) ref; | |
1380 | scan += 4; | |
1381 | i = 4; | |
1382 | while (i-- > 0) | |
1383 | value = (value << 8) | ((*scan++) & 0xff); | |
1384 | return value; | |
1385 | } | |
1386 | ||
1387 | static void | |
fba45db2 | 1388 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1389 | { |
1390 | int i; | |
1391 | unsigned char *csrc, *cdest; | |
1392 | ||
1393 | csrc = (unsigned char *) src; | |
1394 | cdest = (unsigned char *) dest; | |
1395 | i = 8; | |
1396 | while (i--) | |
1397 | *cdest++ = *csrc++; | |
1398 | } | |
1399 | ||
1400 | static int | |
fba45db2 | 1401 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1402 | { |
1403 | /* things are broken right now, so just assume we got a match */ | |
1404 | #if 0 | |
1405 | unsigned char *srcp, *destp; | |
1406 | int i, result; | |
1407 | srcp = (char *) src; | |
1408 | destp = (char *) dest; | |
1409 | ||
1410 | result = 1; | |
1411 | while (i-- > 0) | |
1412 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1413 | return result; | |
1414 | #endif | |
1415 | return 1; | |
1416 | } | |
1417 | ||
1418 | /* | |
c5aa993b JM |
1419 | threadid:1, # always request threadid |
1420 | context_exists:2, | |
1421 | display:4, | |
1422 | unique_name:8, | |
1423 | more_display:16 | |
1424 | */ | |
c906108c SS |
1425 | |
1426 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1427 | ||
1428 | static char * | |
fba45db2 | 1429 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1430 | { |
1431 | *pkt++ = 'q'; /* Info Query */ | |
1432 | *pkt++ = 'P'; /* process or thread info */ | |
1433 | pkt = pack_int (pkt, mode); /* mode */ | |
1434 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1435 | *pkt = '\0'; /* terminate */ | |
1436 | return pkt; | |
1437 | } | |
1438 | ||
1439 | /* These values tag the fields in a thread info response packet */ | |
1440 | /* Tagging the fields allows us to request specific fields and to | |
1441 | add more fields as time goes by */ | |
1442 | ||
c5aa993b JM |
1443 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1444 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1445 | fetch registers and its stack */ | |
1446 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1447 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1448 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1449 | the process */ | |
c906108c SS |
1450 | |
1451 | static int | |
fba45db2 KB |
1452 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1453 | struct gdb_ext_thread_info *info) | |
c906108c | 1454 | { |
d01949b6 | 1455 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1456 | int mask, length; |
1457 | unsigned int tag; | |
1458 | threadref ref; | |
d01949b6 | 1459 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1460 | int retval = 1; |
1461 | ||
1462 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1463 | info->active = 0; | |
1464 | info->display[0] = '\0'; | |
1465 | info->shortname[0] = '\0'; | |
1466 | info->more_display[0] = '\0'; | |
1467 | ||
1468 | /* Assume the characters indicating the packet type have been stripped */ | |
1469 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1470 | pkt = unpack_threadid (pkt, &ref); | |
1471 | ||
1472 | if (mask == 0) | |
1473 | warning ("Incomplete response to threadinfo request\n"); | |
1474 | if (!threadmatch (&ref, expectedref)) | |
1475 | { /* This is an answer to a different request */ | |
1476 | warning ("ERROR RMT Thread info mismatch\n"); | |
1477 | return 0; | |
1478 | } | |
1479 | copy_threadref (&info->threadid, &ref); | |
1480 | ||
1481 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1482 | ||
c5aa993b | 1483 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1484 | { |
1485 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1486 | pkt = unpack_byte (pkt, &length); /* length */ | |
1487 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1488 | { | |
1489 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1490 | retval = 0; | |
1491 | break; | |
1492 | } | |
1493 | if (tag == TAG_THREADID) | |
1494 | { | |
1495 | if (length != 16) | |
1496 | { | |
1497 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1498 | retval = 0; | |
1499 | break; | |
1500 | } | |
1501 | pkt = unpack_threadid (pkt, &ref); | |
1502 | mask = mask & ~TAG_THREADID; | |
1503 | continue; | |
1504 | } | |
1505 | if (tag == TAG_EXISTS) | |
1506 | { | |
1507 | info->active = stub_unpack_int (pkt, length); | |
1508 | pkt += length; | |
1509 | mask = mask & ~(TAG_EXISTS); | |
1510 | if (length > 8) | |
1511 | { | |
1512 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1513 | retval = 0; | |
1514 | break; | |
1515 | } | |
1516 | continue; | |
1517 | } | |
1518 | if (tag == TAG_THREADNAME) | |
1519 | { | |
1520 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1521 | mask = mask & ~TAG_THREADNAME; | |
1522 | continue; | |
1523 | } | |
1524 | if (tag == TAG_DISPLAY) | |
1525 | { | |
1526 | pkt = unpack_string (pkt, &info->display[0], length); | |
1527 | mask = mask & ~TAG_DISPLAY; | |
1528 | continue; | |
1529 | } | |
1530 | if (tag == TAG_MOREDISPLAY) | |
1531 | { | |
1532 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1533 | mask = mask & ~TAG_MOREDISPLAY; | |
1534 | continue; | |
1535 | } | |
1536 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1537 | break; /* Not a tag we know about */ | |
1538 | } | |
1539 | return retval; | |
1540 | } | |
1541 | ||
1542 | static int | |
fba45db2 KB |
1543 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1544 | struct gdb_ext_thread_info *info) | |
c906108c | 1545 | { |
d01949b6 | 1546 | struct remote_state *rs = get_remote_state (); |
c906108c | 1547 | int result; |
d01949b6 | 1548 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1549 | |
1550 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1551 | putpkt (threadinfo_pkt); | |
d01949b6 | 1552 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1553 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1554 | info); | |
1555 | return result; | |
1556 | } | |
1557 | ||
1558 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1559 | representation of a threadid. */ | |
1560 | ||
1561 | static int | |
fba45db2 KB |
1562 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1563 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1564 | { |
1565 | threadref lclref; | |
1566 | ||
1567 | int_to_threadref (&lclref, *ref); | |
1568 | return remote_get_threadinfo (&lclref, selection, info); | |
1569 | } | |
1570 | ||
1571 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1572 | ||
1573 | static char * | |
fba45db2 KB |
1574 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1575 | threadref *nextthread) | |
c906108c SS |
1576 | { |
1577 | *pkt++ = 'q'; /* info query packet */ | |
1578 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1579 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1580 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1581 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1582 | *pkt = '\0'; | |
1583 | return pkt; | |
1584 | } | |
1585 | ||
1586 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1587 | ||
1588 | static int | |
fba45db2 KB |
1589 | parse_threadlist_response (char *pkt, int result_limit, |
1590 | threadref *original_echo, threadref *resultlist, | |
1591 | int *doneflag) | |
c906108c | 1592 | { |
d01949b6 | 1593 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1594 | char *limit; |
1595 | int count, resultcount, done; | |
1596 | ||
1597 | resultcount = 0; | |
1598 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1599 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1600 | pkt = unpack_byte (pkt, &count); /* count field */ |
1601 | pkt = unpack_nibble (pkt, &done); | |
1602 | /* The first threadid is the argument threadid. */ | |
1603 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1604 | while ((count-- > 0) && (pkt < limit)) | |
1605 | { | |
1606 | pkt = unpack_threadid (pkt, resultlist++); | |
1607 | if (resultcount++ >= result_limit) | |
1608 | break; | |
1609 | } | |
1610 | if (doneflag) | |
1611 | *doneflag = done; | |
1612 | return resultcount; | |
1613 | } | |
1614 | ||
1615 | static int | |
fba45db2 KB |
1616 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1617 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1618 | { |
d01949b6 | 1619 | struct remote_state *rs = get_remote_state (); |
c906108c | 1620 | static threadref echo_nextthread; |
d01949b6 AC |
1621 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1622 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1623 | int result = 1; |
1624 | ||
1625 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1626 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1627 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1628 | |
1629 | pack_threadlist_request (threadlist_packet, | |
1630 | startflag, result_limit, nextthread); | |
1631 | putpkt (threadlist_packet); | |
d01949b6 | 1632 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1633 | |
1634 | *result_count = | |
1635 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1636 | threadlist, done); | |
1637 | ||
1638 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1639 | { | |
1640 | /* FIXME: This is a good reason to drop the packet */ | |
1641 | /* Possably, there is a duplicate response */ | |
1642 | /* Possabilities : | |
1643 | retransmit immediatly - race conditions | |
1644 | retransmit after timeout - yes | |
1645 | exit | |
1646 | wait for packet, then exit | |
1647 | */ | |
1648 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1649 | return 0; /* I choose simply exiting */ | |
1650 | } | |
1651 | if (*result_count <= 0) | |
1652 | { | |
1653 | if (*done != 1) | |
1654 | { | |
1655 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1656 | result = 0; | |
1657 | } | |
1658 | return result; /* break; */ | |
1659 | } | |
1660 | if (*result_count > result_limit) | |
1661 | { | |
1662 | *result_count = 0; | |
1663 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1664 | return 0; | |
1665 | } | |
1666 | return result; | |
1667 | } | |
1668 | ||
1669 | /* This is the interface between remote and threads, remotes upper interface */ | |
1670 | ||
1671 | /* remote_find_new_threads retrieves the thread list and for each | |
1672 | thread in the list, looks up the thread in GDB's internal list, | |
1673 | ading the thread if it does not already exist. This involves | |
1674 | getting partial thread lists from the remote target so, polling the | |
1675 | quit_flag is required. */ | |
1676 | ||
1677 | ||
1678 | /* About this many threadisds fit in a packet. */ | |
1679 | ||
1680 | #define MAXTHREADLISTRESULTS 32 | |
1681 | ||
1682 | static int | |
fba45db2 KB |
1683 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1684 | int looplimit) | |
c906108c SS |
1685 | { |
1686 | int done, i, result_count; | |
1687 | int startflag = 1; | |
1688 | int result = 1; | |
1689 | int loopcount = 0; | |
1690 | static threadref nextthread; | |
1691 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1692 | ||
1693 | done = 0; | |
1694 | while (!done) | |
1695 | { | |
1696 | if (loopcount++ > looplimit) | |
1697 | { | |
1698 | result = 0; | |
1699 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1700 | break; | |
1701 | } | |
1702 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1703 | &done, &result_count, resultthreadlist)) | |
1704 | { | |
1705 | result = 0; | |
1706 | break; | |
1707 | } | |
1708 | /* clear for later iterations */ | |
1709 | startflag = 0; | |
1710 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1711 | if (result_count >= 1) | |
1712 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1713 | i = 0; | |
1714 | while (result_count--) | |
1715 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1716 | break; | |
1717 | } | |
1718 | return result; | |
1719 | } | |
1720 | ||
1721 | static int | |
fba45db2 | 1722 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1723 | { |
39f77062 | 1724 | ptid_t ptid; |
c906108c | 1725 | |
39f77062 KB |
1726 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1727 | ||
1728 | if (!in_thread_list (ptid)) | |
1729 | add_thread (ptid); | |
c906108c SS |
1730 | return 1; /* continue iterator */ |
1731 | } | |
1732 | ||
1733 | #define CRAZY_MAX_THREADS 1000 | |
1734 | ||
39f77062 KB |
1735 | static ptid_t |
1736 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1737 | { |
d01949b6 AC |
1738 | struct remote_state *rs = get_remote_state (); |
1739 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1740 | |
1741 | putpkt ("qC"); | |
d01949b6 | 1742 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1743 | if (buf[0] == 'Q' && buf[1] == 'C') |
39f77062 | 1744 | return pid_to_ptid (strtol (&buf[2], NULL, 16)); |
c906108c SS |
1745 | else |
1746 | return oldpid; | |
1747 | } | |
1748 | ||
9d1f7ab2 MS |
1749 | /* Find new threads for info threads command. |
1750 | * Original version, using John Metzler's thread protocol. | |
1751 | */ | |
cce74817 JM |
1752 | |
1753 | static void | |
fba45db2 | 1754 | remote_find_new_threads (void) |
c906108c | 1755 | { |
c5aa993b JM |
1756 | remote_threadlist_iterator (remote_newthread_step, 0, |
1757 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1758 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1759 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1760 | } |
1761 | ||
9d1f7ab2 MS |
1762 | /* |
1763 | * Find all threads for info threads command. | |
1764 | * Uses new thread protocol contributed by Cisco. | |
1765 | * Falls back and attempts to use the older method (above) | |
1766 | * if the target doesn't respond to the new method. | |
1767 | */ | |
1768 | ||
0f71a2f6 JM |
1769 | static void |
1770 | remote_threads_info (void) | |
1771 | { | |
d01949b6 AC |
1772 | struct remote_state *rs = get_remote_state (); |
1773 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1774 | char *bufp; |
0f71a2f6 JM |
1775 | int tid; |
1776 | ||
1777 | if (remote_desc == 0) /* paranoia */ | |
1778 | error ("Command can only be used when connected to the remote target."); | |
1779 | ||
9d1f7ab2 MS |
1780 | if (use_threadinfo_query) |
1781 | { | |
1782 | putpkt ("qfThreadInfo"); | |
1783 | bufp = buf; | |
d01949b6 | 1784 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1785 | if (bufp[0] != '\0') /* q packet recognized */ |
1786 | { | |
1787 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1788 | { | |
1789 | do | |
1790 | { | |
1791 | tid = strtol (bufp, &bufp, 16); | |
39f77062 KB |
1792 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1793 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1794 | } |
1795 | while (*bufp++ == ','); /* comma-separated list */ | |
1796 | putpkt ("qsThreadInfo"); | |
1797 | bufp = buf; | |
d01949b6 | 1798 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1799 | } |
1800 | return; /* done */ | |
1801 | } | |
1802 | } | |
1803 | ||
1804 | /* Else fall back to old method based on jmetzler protocol. */ | |
1805 | use_threadinfo_query = 0; | |
1806 | remote_find_new_threads (); | |
1807 | return; | |
1808 | } | |
1809 | ||
1810 | /* | |
1811 | * Collect a descriptive string about the given thread. | |
1812 | * The target may say anything it wants to about the thread | |
1813 | * (typically info about its blocked / runnable state, name, etc.). | |
1814 | * This string will appear in the info threads display. | |
1815 | * | |
1816 | * Optional: targets are not required to implement this function. | |
1817 | */ | |
1818 | ||
1819 | static char * | |
1820 | remote_threads_extra_info (struct thread_info *tp) | |
1821 | { | |
d01949b6 | 1822 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1823 | int result; |
1824 | int set; | |
1825 | threadref id; | |
1826 | struct gdb_ext_thread_info threadinfo; | |
1827 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1828 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1829 | int n = 0; /* position in display_buf */ |
1830 | ||
1831 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1832 | internal_error (__FILE__, __LINE__, |
1833 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1834 | |
1835 | if (use_threadextra_query) | |
1836 | { | |
39f77062 | 1837 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1838 | putpkt (bufp); |
d01949b6 | 1839 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1840 | if (bufp[0] != 0) |
1841 | { | |
30559e10 MS |
1842 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1843 | result = hex2bin (bufp, display_buf, n); | |
1844 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1845 | return display_buf; |
1846 | } | |
0f71a2f6 | 1847 | } |
9d1f7ab2 MS |
1848 | |
1849 | /* If the above query fails, fall back to the old method. */ | |
1850 | use_threadextra_query = 0; | |
1851 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1852 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1853 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1854 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1855 | if (threadinfo.active) | |
0f71a2f6 | 1856 | { |
9d1f7ab2 MS |
1857 | if (*threadinfo.shortname) |
1858 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1859 | if (*threadinfo.display) | |
1860 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1861 | if (*threadinfo.more_display) | |
1862 | n += sprintf(&display_buf[n], " Priority: %s", | |
1863 | threadinfo.more_display); | |
1864 | ||
1865 | if (n > 0) | |
c5aa993b | 1866 | { |
9d1f7ab2 MS |
1867 | /* for purely cosmetic reasons, clear up trailing commas */ |
1868 | if (',' == display_buf[n-1]) | |
1869 | display_buf[n-1] = ' '; | |
1870 | return display_buf; | |
c5aa993b | 1871 | } |
0f71a2f6 | 1872 | } |
9d1f7ab2 | 1873 | return NULL; |
0f71a2f6 | 1874 | } |
9d1f7ab2 | 1875 | |
c906108c | 1876 | \f |
c5aa993b | 1877 | |
c906108c SS |
1878 | /* Restart the remote side; this is an extended protocol operation. */ |
1879 | ||
1880 | static void | |
fba45db2 | 1881 | extended_remote_restart (void) |
c906108c | 1882 | { |
d01949b6 AC |
1883 | struct remote_state *rs = get_remote_state (); |
1884 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1885 | |
1886 | /* Send the restart command; for reasons I don't understand the | |
1887 | remote side really expects a number after the "R". */ | |
1888 | buf[0] = 'R'; | |
1889 | sprintf (&buf[1], "%x", 0); | |
1890 | putpkt (buf); | |
1891 | ||
1892 | /* Now query for status so this looks just like we restarted | |
1893 | gdbserver from scratch. */ | |
1894 | putpkt ("?"); | |
d01949b6 | 1895 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1896 | } |
1897 | \f | |
1898 | /* Clean up connection to a remote debugger. */ | |
1899 | ||
1900 | /* ARGSUSED */ | |
1901 | static void | |
fba45db2 | 1902 | remote_close (int quitting) |
c906108c SS |
1903 | { |
1904 | if (remote_desc) | |
2cd58942 | 1905 | serial_close (remote_desc); |
c906108c SS |
1906 | remote_desc = NULL; |
1907 | } | |
1908 | ||
1909 | /* Query the remote side for the text, data and bss offsets. */ | |
1910 | ||
1911 | static void | |
fba45db2 | 1912 | get_offsets (void) |
c906108c | 1913 | { |
d01949b6 AC |
1914 | struct remote_state *rs = get_remote_state (); |
1915 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1916 | char *ptr; |
c906108c SS |
1917 | int lose; |
1918 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1919 | struct section_offsets *offs; | |
1920 | ||
1921 | putpkt ("qOffsets"); | |
1922 | ||
d01949b6 | 1923 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1924 | |
1925 | if (buf[0] == '\000') | |
1926 | return; /* Return silently. Stub doesn't support | |
1927 | this command. */ | |
1928 | if (buf[0] == 'E') | |
1929 | { | |
1930 | warning ("Remote failure reply: %s", buf); | |
1931 | return; | |
1932 | } | |
1933 | ||
1934 | /* Pick up each field in turn. This used to be done with scanf, but | |
1935 | scanf will make trouble if CORE_ADDR size doesn't match | |
1936 | conversion directives correctly. The following code will work | |
1937 | with any size of CORE_ADDR. */ | |
1938 | text_addr = data_addr = bss_addr = 0; | |
1939 | ptr = buf; | |
1940 | lose = 0; | |
1941 | ||
1942 | if (strncmp (ptr, "Text=", 5) == 0) | |
1943 | { | |
1944 | ptr += 5; | |
1945 | /* Don't use strtol, could lose on big values. */ | |
1946 | while (*ptr && *ptr != ';') | |
1947 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1948 | } | |
1949 | else | |
1950 | lose = 1; | |
1951 | ||
1952 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1953 | { | |
1954 | ptr += 6; | |
1955 | while (*ptr && *ptr != ';') | |
1956 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1957 | } | |
1958 | else | |
1959 | lose = 1; | |
1960 | ||
1961 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1962 | { | |
1963 | ptr += 5; | |
1964 | while (*ptr && *ptr != ';') | |
1965 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1966 | } | |
1967 | else | |
1968 | lose = 1; | |
1969 | ||
1970 | if (lose) | |
1971 | error ("Malformed response to offset query, %s", buf); | |
1972 | ||
1973 | if (symfile_objfile == NULL) | |
1974 | return; | |
1975 | ||
d4f3574e SS |
1976 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1977 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c | 1978 | |
a4c8257b | 1979 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1980 | |
1981 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1982 | because that's what nlmconv does now. The real solution requires changes | |
1983 | to the stub and remote.c that I don't have time to do right now. */ | |
1984 | ||
a4c8257b EZ |
1985 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1986 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1987 | |
1988 | objfile_relocate (symfile_objfile, offs); | |
1989 | } | |
1990 | ||
0f71a2f6 JM |
1991 | /* |
1992 | * Cisco version of section offsets: | |
1993 | * | |
1994 | * Instead of having GDB query the target for the section offsets, | |
1995 | * Cisco lets the target volunteer the information! It's also in | |
1996 | * a different format, so here are the functions that will decode | |
1997 | * a section offset packet from a Cisco target. | |
1998 | */ | |
1999 | ||
2000 | /* | |
2001 | * Function: remote_cisco_section_offsets | |
2002 | * | |
2003 | * Returns: zero for success, non-zero for failure | |
2004 | */ | |
2005 | ||
c5aa993b | 2006 | static int |
c2d11a7d JM |
2007 | remote_cisco_section_offsets (bfd_vma text_addr, |
2008 | bfd_vma data_addr, | |
2009 | bfd_vma bss_addr, | |
2010 | bfd_signed_vma *text_offs, | |
2011 | bfd_signed_vma *data_offs, | |
2012 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
2013 | { |
2014 | bfd_vma text_base, data_base, bss_base; | |
2015 | struct minimal_symbol *start; | |
2016 | asection *sect; | |
c5aa993b | 2017 | bfd *abfd; |
0f71a2f6 | 2018 | int len; |
0f71a2f6 JM |
2019 | |
2020 | if (symfile_objfile == NULL) | |
c5aa993b | 2021 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
2022 | |
2023 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
2024 | if (start == NULL) | |
c5aa993b | 2025 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
2026 | |
2027 | data_base = bss_base = 0; | |
2028 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
2029 | ||
2030 | abfd = symfile_objfile->obfd; | |
c5aa993b | 2031 | for (sect = abfd->sections; |
0f71a2f6 JM |
2032 | sect != 0; |
2033 | sect = sect->next) | |
2034 | { | |
ce359b09 | 2035 | const char *p = bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
2036 | len = strlen (p); |
2037 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
2038 | if (data_base == 0 || | |
2039 | data_base > bfd_get_section_vma (abfd, sect)) | |
2040 | data_base = bfd_get_section_vma (abfd, sect); | |
2041 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 2042 | if (bss_base == 0 || |
0f71a2f6 JM |
2043 | bss_base > bfd_get_section_vma (abfd, sect)) |
2044 | bss_base = bfd_get_section_vma (abfd, sect); | |
2045 | } | |
2046 | *text_offs = text_addr - text_base; | |
2047 | *data_offs = data_addr - data_base; | |
c5aa993b | 2048 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
2049 | if (remote_debug) |
2050 | { | |
2051 | char tmp[128]; | |
2052 | ||
2053 | sprintf (tmp, "VMA: text = 0x"); | |
2054 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 2055 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 2056 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 2057 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
2058 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
2059 | fprintf_filtered (gdb_stdlog, tmp); | |
2060 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
2061 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
2062 | paddr_nz (*text_offs), | |
2063 | paddr_nz (*data_offs), | |
2064 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
2065 | } |
2066 | ||
2067 | return 0; | |
2068 | } | |
2069 | ||
2070 | /* | |
2071 | * Function: remote_cisco_objfile_relocate | |
2072 | * | |
2073 | * Relocate the symbol file for a remote target. | |
2074 | */ | |
2075 | ||
96baa820 | 2076 | void |
fba45db2 KB |
2077 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
2078 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
2079 | { |
2080 | struct section_offsets *offs; | |
2081 | ||
c5aa993b | 2082 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2083 | { |
2084 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
2085 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
2086 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 2087 | |
d4f3574e SS |
2088 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
2089 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 | 2090 | |
a4c8257b EZ |
2091 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
2092 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
2093 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
2094 | |
2095 | /* First call the standard objfile_relocate. */ | |
2096 | objfile_relocate (symfile_objfile, offs); | |
2097 | ||
2098 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
2099 | the exec target. These entries will control memory transfers |
2100 | from the exec file. */ | |
0f71a2f6 JM |
2101 | |
2102 | exec_set_section_offsets (text_off, data_off, bss_off); | |
2103 | } | |
2104 | } | |
2105 | ||
c906108c SS |
2106 | /* Stub for catch_errors. */ |
2107 | ||
0f71a2f6 | 2108 | static int |
c2d11a7d | 2109 | remote_start_remote_dummy (void *dummy) |
0f71a2f6 JM |
2110 | { |
2111 | start_remote (); /* Initialize gdb process mechanisms */ | |
2112 | return 1; | |
2113 | } | |
2114 | ||
c906108c | 2115 | static int |
fba45db2 | 2116 | remote_start_remote (PTR dummy) |
c906108c | 2117 | { |
8edbea78 | 2118 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2119 | |
2120 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2121 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2122 | |
2123 | /* Let the stub know that we want it to return the thread. */ | |
2124 | set_thread (-1, 0); | |
2125 | ||
39f77062 | 2126 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2127 | |
2128 | get_offsets (); /* Get text, data & bss offsets */ | |
2129 | ||
2130 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2131 | immediate_quit--; |
c906108c | 2132 | |
0f71a2f6 | 2133 | return remote_start_remote_dummy (dummy); |
c906108c SS |
2134 | } |
2135 | ||
2136 | /* Open a connection to a remote debugger. | |
2137 | NAME is the filename used for communication. */ | |
2138 | ||
2139 | static void | |
fba45db2 | 2140 | remote_open (char *name, int from_tty) |
c906108c SS |
2141 | { |
2142 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
2143 | } | |
2144 | ||
43ff13b4 JM |
2145 | /* Just like remote_open, but with asynchronous support. */ |
2146 | static void | |
fba45db2 | 2147 | remote_async_open (char *name, int from_tty) |
43ff13b4 JM |
2148 | { |
2149 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
2150 | } | |
2151 | ||
c906108c SS |
2152 | /* Open a connection to a remote debugger using the extended |
2153 | remote gdb protocol. NAME is the filename used for communication. */ | |
2154 | ||
2155 | static void | |
fba45db2 | 2156 | extended_remote_open (char *name, int from_tty) |
c906108c | 2157 | { |
c5aa993b | 2158 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
2159 | } |
2160 | ||
43ff13b4 JM |
2161 | /* Just like extended_remote_open, but with asynchronous support. */ |
2162 | static void | |
fba45db2 | 2163 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2164 | { |
c5aa993b | 2165 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
2166 | } |
2167 | ||
c906108c SS |
2168 | /* Generic code for opening a connection to a remote target. */ |
2169 | ||
d471ea57 AC |
2170 | static void |
2171 | init_all_packet_configs (void) | |
2172 | { | |
2173 | int i; | |
44eaed12 C |
2174 | update_packet_config (&remote_protocol_e); |
2175 | update_packet_config (&remote_protocol_E); | |
d471ea57 | 2176 | update_packet_config (&remote_protocol_P); |
dc8acb97 | 2177 | update_packet_config (&remote_protocol_qSymbol); |
d471ea57 AC |
2178 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2179 | update_packet_config (&remote_protocol_Z[i]); | |
2180 | /* Force remote_write_bytes to check whether target supports binary | |
2181 | downloading. */ | |
2182 | update_packet_config (&remote_protocol_binary_download); | |
2183 | } | |
2184 | ||
dc8acb97 MS |
2185 | /* Symbol look-up. */ |
2186 | ||
2187 | static void | |
2188 | remote_check_symbols (struct objfile *objfile) | |
2189 | { | |
d01949b6 | 2190 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2191 | char *msg, *reply, *tmp; |
2192 | struct minimal_symbol *sym; | |
2193 | int end; | |
2194 | ||
2195 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2196 | return; | |
2197 | ||
d01949b6 AC |
2198 | msg = alloca (rs->remote_packet_size); |
2199 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2200 | |
2201 | /* Invite target to request symbol lookups. */ | |
2202 | ||
2203 | putpkt ("qSymbol::"); | |
d01949b6 | 2204 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2205 | packet_ok (reply, &remote_protocol_qSymbol); |
2206 | ||
2207 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2208 | { | |
2209 | tmp = &reply[8]; | |
2210 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2211 | msg[end] = '\0'; | |
2212 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2213 | if (sym == NULL) | |
2214 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2215 | else | |
2216 | sprintf (msg, "qSymbol:%s:%s", | |
2217 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
2218 | &reply[8]); | |
2219 | putpkt (msg); | |
d01949b6 | 2220 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2221 | } |
2222 | } | |
2223 | ||
c906108c | 2224 | static void |
fba45db2 KB |
2225 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
2226 | int extended_p) | |
c906108c | 2227 | { |
d01949b6 | 2228 | struct remote_state *rs = get_remote_state (); |
c906108c | 2229 | if (name == 0) |
22e04375 AC |
2230 | error ("To open a remote debug connection, you need to specify what\n" |
2231 | "serial device is attached to the remote system\n" | |
2232 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2233 | |
6426a772 JM |
2234 | /* See FIXME above */ |
2235 | wait_forever_enabled_p = 1; | |
2236 | ||
c906108c SS |
2237 | target_preopen (from_tty); |
2238 | ||
2239 | unpush_target (target); | |
2240 | ||
2cd58942 | 2241 | remote_desc = serial_open (name); |
c906108c SS |
2242 | if (!remote_desc) |
2243 | perror_with_name (name); | |
2244 | ||
2245 | if (baud_rate != -1) | |
2246 | { | |
2cd58942 | 2247 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2248 | { |
2cd58942 | 2249 | serial_close (remote_desc); |
c906108c SS |
2250 | perror_with_name (name); |
2251 | } | |
2252 | } | |
2253 | ||
2cd58942 | 2254 | serial_raw (remote_desc); |
c906108c SS |
2255 | |
2256 | /* If there is something sitting in the buffer we might take it as a | |
2257 | response to a command, which would be bad. */ | |
2cd58942 | 2258 | serial_flush_input (remote_desc); |
c906108c SS |
2259 | |
2260 | if (from_tty) | |
2261 | { | |
2262 | puts_filtered ("Remote debugging using "); | |
2263 | puts_filtered (name); | |
2264 | puts_filtered ("\n"); | |
2265 | } | |
c5aa993b | 2266 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2267 | |
d471ea57 | 2268 | init_all_packet_configs (); |
96baa820 | 2269 | |
c5aa993b | 2270 | general_thread = -2; |
cce74817 | 2271 | continue_thread = -2; |
c906108c | 2272 | |
9d1f7ab2 MS |
2273 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2274 | use_threadinfo_query = 1; | |
2275 | use_threadextra_query = 1; | |
2276 | ||
c906108c SS |
2277 | /* Without this, some commands which require an active target (such |
2278 | as kill) won't work. This variable serves (at least) double duty | |
2279 | as both the pid of the target process (if it has such), and as a | |
2280 | flag indicating that a target is active. These functions should | |
2281 | be split out into seperate variables, especially since GDB will | |
2282 | someday have a notion of debugging several processes. */ | |
2283 | ||
39f77062 | 2284 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
f78f6cf1 MS |
2285 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2286 | /* First delete any symbols previously loaded from shared libraries. */ | |
2287 | no_shared_libraries (NULL, 0); | |
2288 | #endif | |
2289 | ||
c906108c SS |
2290 | /* Start the remote connection; if error (0), discard this target. |
2291 | In particular, if the user quits, be sure to discard it | |
2292 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2293 | if (!catch_errors (remote_start_remote, NULL, |
2294 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
2295 | RETURN_MASK_ALL)) |
2296 | { | |
2297 | pop_target (); | |
2298 | return; | |
2299 | } | |
2300 | ||
2301 | if (extended_p) | |
2302 | { | |
6240bebf | 2303 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2304 | char *buf = alloca (rs->remote_packet_size); |
c906108c | 2305 | putpkt ("!"); |
d01949b6 | 2306 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 2307 | } |
f78f6cf1 | 2308 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2309 | /* FIXME: need a master target_open vector from which all |
2310 | remote_opens can be called, so that stuff like this can | |
2311 | go there. Failing that, the following code must be copied | |
2312 | to the open function for any remote target that wants to | |
2313 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2314 | |
2315 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2316 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2317 | { |
2318 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2319 | remote_check_symbols (symfile_objfile); | |
2320 | } | |
6240bebf | 2321 | #endif |
c906108c SS |
2322 | } |
2323 | ||
43ff13b4 JM |
2324 | /* Just like remote_open but with asynchronous support. */ |
2325 | static void | |
fba45db2 KB |
2326 | remote_async_open_1 (char *name, int from_tty, struct target_ops *target, |
2327 | int extended_p) | |
43ff13b4 | 2328 | { |
d01949b6 | 2329 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 2330 | if (name == 0) |
22e04375 AC |
2331 | error ("To open a remote debug connection, you need to specify what\n" |
2332 | "serial device is attached to the remote system\n" | |
2333 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
43ff13b4 JM |
2334 | |
2335 | target_preopen (from_tty); | |
2336 | ||
2337 | unpush_target (target); | |
2338 | ||
2cd58942 | 2339 | remote_desc = serial_open (name); |
43ff13b4 JM |
2340 | if (!remote_desc) |
2341 | perror_with_name (name); | |
2342 | ||
2343 | if (baud_rate != -1) | |
2344 | { | |
2cd58942 | 2345 | if (serial_setbaudrate (remote_desc, baud_rate)) |
43ff13b4 | 2346 | { |
2cd58942 | 2347 | serial_close (remote_desc); |
43ff13b4 JM |
2348 | perror_with_name (name); |
2349 | } | |
2350 | } | |
2351 | ||
2cd58942 | 2352 | serial_raw (remote_desc); |
43ff13b4 JM |
2353 | |
2354 | /* If there is something sitting in the buffer we might take it as a | |
2355 | response to a command, which would be bad. */ | |
2cd58942 | 2356 | serial_flush_input (remote_desc); |
43ff13b4 JM |
2357 | |
2358 | if (from_tty) | |
2359 | { | |
2360 | puts_filtered ("Remote debugging using "); | |
2361 | puts_filtered (name); | |
2362 | puts_filtered ("\n"); | |
2363 | } | |
2364 | ||
c5aa993b | 2365 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2366 | |
d471ea57 | 2367 | init_all_packet_configs (); |
43ff13b4 | 2368 | |
c5aa993b | 2369 | general_thread = -2; |
43ff13b4 JM |
2370 | continue_thread = -2; |
2371 | ||
9d1f7ab2 MS |
2372 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2373 | use_threadinfo_query = 1; | |
2374 | use_threadextra_query = 1; | |
2375 | ||
43ff13b4 JM |
2376 | /* Without this, some commands which require an active target (such |
2377 | as kill) won't work. This variable serves (at least) double duty | |
2378 | as both the pid of the target process (if it has such), and as a | |
2379 | flag indicating that a target is active. These functions should | |
2380 | be split out into seperate variables, especially since GDB will | |
2381 | someday have a notion of debugging several processes. */ | |
39f77062 | 2382 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
6426a772 JM |
2383 | |
2384 | /* With this target we start out by owning the terminal. */ | |
2385 | remote_async_terminal_ours_p = 1; | |
2386 | ||
2387 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2388 | assumed that the target is already ready and able to respond to | |
e26cc349 | 2389 | requests. Unfortunately remote_start_remote() eventually calls |
6426a772 JM |
2390 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
2391 | around this. Eventually a mechanism that allows | |
2392 | wait_for_inferior() to expect/get timeouts will be | |
2393 | implemented. */ | |
2394 | wait_forever_enabled_p = 0; | |
2395 | ||
f78f6cf1 MS |
2396 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2397 | /* First delete any symbols previously loaded from shared libraries. */ | |
2398 | no_shared_libraries (NULL, 0); | |
2399 | #endif | |
2400 | ||
43ff13b4 JM |
2401 | /* Start the remote connection; if error (0), discard this target. |
2402 | In particular, if the user quits, be sure to discard it | |
2403 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2404 | if (!catch_errors (remote_start_remote, NULL, |
2405 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2406 | RETURN_MASK_ALL)) |
2407 | { | |
43ff13b4 | 2408 | pop_target (); |
6426a772 | 2409 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
2410 | return; |
2411 | } | |
2412 | ||
6426a772 JM |
2413 | wait_forever_enabled_p = 1; |
2414 | ||
2415 | if (extended_p) | |
43ff13b4 | 2416 | { |
6240bebf | 2417 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2418 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2419 | putpkt ("!"); |
d01949b6 | 2420 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2421 | } |
f78f6cf1 | 2422 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2423 | /* FIXME: need a master target_open vector from which all |
2424 | remote_opens can be called, so that stuff like this can | |
2425 | go there. Failing that, the following code must be copied | |
2426 | to the open function for any remote target that wants to | |
2427 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2428 | |
2429 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2430 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2431 | { |
2432 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2433 | remote_check_symbols (symfile_objfile); | |
2434 | } | |
6240bebf | 2435 | #endif |
43ff13b4 JM |
2436 | } |
2437 | ||
c906108c SS |
2438 | /* This takes a program previously attached to and detaches it. After |
2439 | this is done, GDB can be used to debug some other program. We | |
2440 | better not have left any breakpoints in the target program or it'll | |
2441 | die when it hits one. */ | |
2442 | ||
2443 | static void | |
fba45db2 | 2444 | remote_detach (char *args, int from_tty) |
c906108c | 2445 | { |
d01949b6 AC |
2446 | struct remote_state *rs = get_remote_state (); |
2447 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2448 | |
2449 | if (args) | |
2450 | error ("Argument given to \"detach\" when remotely debugging."); | |
2451 | ||
2452 | /* Tell the remote target to detach. */ | |
2453 | strcpy (buf, "D"); | |
d01949b6 | 2454 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2455 | |
cca728d0 | 2456 | target_mourn_inferior (); |
c906108c SS |
2457 | if (from_tty) |
2458 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2459 | |
c906108c SS |
2460 | } |
2461 | ||
43ff13b4 JM |
2462 | /* Same as remote_detach, but with async support. */ |
2463 | static void | |
fba45db2 | 2464 | remote_async_detach (char *args, int from_tty) |
43ff13b4 | 2465 | { |
d01949b6 AC |
2466 | struct remote_state *rs = get_remote_state (); |
2467 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2468 | |
2469 | if (args) | |
2470 | error ("Argument given to \"detach\" when remotely debugging."); | |
2471 | ||
2472 | /* Tell the remote target to detach. */ | |
2473 | strcpy (buf, "D"); | |
d01949b6 | 2474 | remote_send (buf, (rs->remote_packet_size)); |
43ff13b4 JM |
2475 | |
2476 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 2477 | if (target_is_async_p ()) |
2cd58942 | 2478 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2479 | |
cca728d0 | 2480 | target_mourn_inferior (); |
43ff13b4 JM |
2481 | if (from_tty) |
2482 | puts_filtered ("Ending remote debugging.\n"); | |
2483 | } | |
2484 | ||
c906108c SS |
2485 | /* Convert hex digit A to a number. */ |
2486 | ||
30559e10 | 2487 | static int |
fba45db2 | 2488 | fromhex (int a) |
c906108c SS |
2489 | { |
2490 | if (a >= '0' && a <= '9') | |
2491 | return a - '0'; | |
2492 | else if (a >= 'a' && a <= 'f') | |
2493 | return a - 'a' + 10; | |
2494 | else if (a >= 'A' && a <= 'F') | |
2495 | return a - 'A' + 10; | |
c5aa993b | 2496 | else |
c906108c SS |
2497 | error ("Reply contains invalid hex digit %d", a); |
2498 | } | |
2499 | ||
30559e10 MS |
2500 | static int |
2501 | hex2bin (const char *hex, char *bin, int count) | |
2502 | { | |
2503 | int i; | |
2504 | ||
30559e10 MS |
2505 | for (i = 0; i < count; i++) |
2506 | { | |
2507 | if (hex[0] == 0 || hex[1] == 0) | |
2508 | { | |
2509 | /* Hex string is short, or of uneven length. | |
2510 | Return the count that has been converted so far. */ | |
2511 | return i; | |
2512 | } | |
2513 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2514 | hex += 2; | |
2515 | } | |
2516 | return i; | |
2517 | } | |
2518 | ||
c906108c SS |
2519 | /* Convert number NIB to a hex digit. */ |
2520 | ||
2521 | static int | |
fba45db2 | 2522 | tohex (int nib) |
c906108c SS |
2523 | { |
2524 | if (nib < 10) | |
c5aa993b | 2525 | return '0' + nib; |
c906108c | 2526 | else |
c5aa993b | 2527 | return 'a' + nib - 10; |
c906108c | 2528 | } |
30559e10 MS |
2529 | |
2530 | static int | |
234fa6d1 | 2531 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2532 | { |
2533 | int i; | |
2534 | /* May use a length, or a nul-terminated string as input. */ | |
2535 | if (count == 0) | |
2536 | count = strlen (bin); | |
2537 | ||
2538 | for (i = 0; i < count; i++) | |
2539 | { | |
2540 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2541 | *hex++ = tohex (*bin++ & 0xf); | |
2542 | } | |
2543 | *hex = 0; | |
2544 | return i; | |
2545 | } | |
c906108c SS |
2546 | \f |
2547 | /* Tell the remote machine to resume. */ | |
2548 | ||
2549 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2550 | ||
2551 | static int last_sent_step; | |
2552 | ||
2553 | static void | |
39f77062 | 2554 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
c906108c | 2555 | { |
d01949b6 AC |
2556 | struct remote_state *rs = get_remote_state (); |
2557 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2558 | int pid = PIDGET (ptid); |
44eaed12 | 2559 | char *p; |
c906108c SS |
2560 | |
2561 | if (pid == -1) | |
2562 | set_thread (0, 0); /* run any thread */ | |
2563 | else | |
2564 | set_thread (pid, 0); /* run this thread */ | |
2565 | ||
c906108c SS |
2566 | last_sent_signal = siggnal; |
2567 | last_sent_step = step; | |
2568 | ||
2569 | /* A hook for when we need to do something at the last moment before | |
2570 | resumption. */ | |
2571 | if (target_resume_hook) | |
2572 | (*target_resume_hook) (); | |
2573 | ||
44eaed12 C |
2574 | |
2575 | /* The s/S/c/C packets do not return status. So if the target does | |
2576 | not support the S or C packets, the debug agent returns an empty | |
2577 | string which is detected in remote_wait(). This protocol defect | |
2578 | is fixed in the e/E packets. */ | |
2579 | ||
2580 | if (step && step_range_end) | |
2581 | { | |
2582 | /* If the target does not support the 'E' packet, we try the 'S' | |
2583 | packet. Ideally we would fall back to the 'e' packet if that | |
2584 | too is not supported. But that would require another copy of | |
2585 | the code to issue the 'e' packet (and fall back to 's' if not | |
2586 | supported) in remote_wait(). */ | |
2587 | ||
2588 | if (siggnal != TARGET_SIGNAL_0) | |
2589 | { | |
2590 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2591 | { | |
2592 | p = buf; | |
2593 | *p++ = 'E'; | |
2594 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2595 | *p++ = tohex (((int) siggnal) & 0xf); | |
2596 | *p++ = ','; | |
2597 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2598 | *p++ = ','; | |
2599 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2600 | *p++ = 0; | |
2601 | ||
2602 | putpkt (buf); | |
d01949b6 | 2603 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2604 | |
234fa6d1 | 2605 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2606 | return; |
2607 | } | |
2608 | } | |
2609 | else | |
2610 | { | |
2611 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2612 | { | |
2613 | p = buf; | |
2614 | *p++ = 'e'; | |
2615 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2616 | *p++ = ','; | |
2617 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2618 | *p++ = 0; | |
2619 | ||
2620 | putpkt (buf); | |
d01949b6 | 2621 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2622 | |
234fa6d1 | 2623 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2624 | return; |
2625 | } | |
2626 | } | |
2627 | } | |
2628 | ||
c906108c SS |
2629 | if (siggnal != TARGET_SIGNAL_0) |
2630 | { | |
2631 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2632 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
44eaed12 | 2633 | buf[2] = tohex (((int) siggnal) & 0xf); |
c906108c SS |
2634 | buf[3] = '\0'; |
2635 | } | |
2636 | else | |
c5aa993b | 2637 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2638 | |
2639 | putpkt (buf); | |
2640 | } | |
43ff13b4 JM |
2641 | |
2642 | /* Same as remote_resume, but with async support. */ | |
2643 | static void | |
39f77062 | 2644 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2645 | { |
d01949b6 AC |
2646 | struct remote_state *rs = get_remote_state (); |
2647 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2648 | int pid = PIDGET (ptid); |
44eaed12 | 2649 | char *p; |
43ff13b4 JM |
2650 | |
2651 | if (pid == -1) | |
2652 | set_thread (0, 0); /* run any thread */ | |
2653 | else | |
2654 | set_thread (pid, 0); /* run this thread */ | |
2655 | ||
43ff13b4 JM |
2656 | last_sent_signal = siggnal; |
2657 | last_sent_step = step; | |
2658 | ||
2659 | /* A hook for when we need to do something at the last moment before | |
2660 | resumption. */ | |
2661 | if (target_resume_hook) | |
2662 | (*target_resume_hook) (); | |
2663 | ||
44eaed12 C |
2664 | /* The s/S/c/C packets do not return status. So if the target does |
2665 | not support the S or C packets, the debug agent returns an empty | |
2666 | string which is detected in remote_wait(). This protocol defect | |
2667 | is fixed in the e/E packets. */ | |
2668 | ||
2669 | if (step && step_range_end) | |
2670 | { | |
2671 | /* If the target does not support the 'E' packet, we try the 'S' | |
2672 | packet. Ideally we would fall back to the 'e' packet if that | |
2673 | too is not supported. But that would require another copy of | |
2674 | the code to issue the 'e' packet (and fall back to 's' if not | |
2675 | supported) in remote_wait(). */ | |
2676 | ||
2677 | if (siggnal != TARGET_SIGNAL_0) | |
2678 | { | |
2679 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2680 | { | |
2681 | p = buf; | |
2682 | *p++ = 'E'; | |
2683 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2684 | *p++ = tohex (((int) siggnal) & 0xf); | |
2685 | *p++ = ','; | |
2686 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2687 | *p++ = ','; | |
2688 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2689 | *p++ = 0; | |
2690 | ||
2691 | putpkt (buf); | |
d01949b6 | 2692 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2693 | |
234fa6d1 | 2694 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2695 | goto register_event_loop; |
2696 | } | |
2697 | } | |
2698 | else | |
2699 | { | |
2700 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2701 | { | |
2702 | p = buf; | |
2703 | *p++ = 'e'; | |
2704 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2705 | *p++ = ','; | |
2706 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2707 | *p++ = 0; | |
2708 | ||
2709 | putpkt (buf); | |
d01949b6 | 2710 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2711 | |
234fa6d1 | 2712 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2713 | goto register_event_loop; |
2714 | } | |
2715 | } | |
2716 | } | |
2717 | ||
43ff13b4 JM |
2718 | if (siggnal != TARGET_SIGNAL_0) |
2719 | { | |
2720 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2721 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2722 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2723 | buf[3] = '\0'; |
2724 | } | |
2725 | else | |
c5aa993b | 2726 | strcpy (buf, step ? "s" : "c"); |
44eaed12 C |
2727 | |
2728 | putpkt (buf); | |
43ff13b4 | 2729 | |
44eaed12 | 2730 | register_event_loop: |
2acceee2 JM |
2731 | /* We are about to start executing the inferior, let's register it |
2732 | with the event loop. NOTE: this is the one place where all the | |
2733 | execution commands end up. We could alternatively do this in each | |
2734 | of the execution commands in infcmd.c.*/ | |
2735 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2736 | into infcmd.c in order to allow inferior function calls to work | |
2737 | NOT asynchronously. */ | |
ed9a39eb | 2738 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2739 | target_async (inferior_event_handler, 0); |
2740 | /* Tell the world that the target is now executing. */ | |
2741 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2742 | this? Instead, should the client of target just assume (for | |
2743 | async targets) that the target is going to start executing? Is | |
2744 | this information already found in the continuation block? */ | |
ed9a39eb | 2745 | if (target_is_async_p ()) |
2acceee2 | 2746 | target_executing = 1; |
43ff13b4 | 2747 | } |
c906108c | 2748 | \f |
43ff13b4 JM |
2749 | |
2750 | /* Set up the signal handler for SIGINT, while the target is | |
2751 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2752 | static void | |
fba45db2 | 2753 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2754 | { |
c5aa993b | 2755 | sigint_remote_token = |
43ff13b4 JM |
2756 | create_async_signal_handler (async_remote_interrupt, NULL); |
2757 | signal (SIGINT, handle_remote_sigint); | |
2758 | } | |
2759 | ||
2760 | /* Signal handler for SIGINT, while the target is executing. */ | |
2761 | static void | |
fba45db2 | 2762 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2763 | { |
2764 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2765 | sigint_remote_twice_token = |
43ff13b4 JM |
2766 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2767 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2768 | } | |
2769 | ||
2770 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2771 | sent once. It will take effect the second time that the user sends | |
2772 | a ^C. */ | |
2773 | static void | |
fba45db2 | 2774 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2775 | { |
2776 | signal (sig, handle_sigint); | |
c5aa993b | 2777 | sigint_remote_twice_token = |
2df3850c | 2778 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2779 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2780 | } | |
2781 | ||
6426a772 | 2782 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2783 | to a ^C. */ |
c5aa993b | 2784 | static void |
fba45db2 | 2785 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2786 | { |
2787 | if (remote_debug) | |
2788 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2789 | ||
2790 | target_stop (); | |
2791 | } | |
2792 | ||
2793 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2794 | up on the target alltogether. */ | |
2df3850c | 2795 | void |
fba45db2 | 2796 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2797 | { |
2df3850c JM |
2798 | if (remote_debug) |
2799 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2800 | /* Do something only if the target was not killed by the previous |
2801 | cntl-C. */ | |
2802 | if (target_executing) | |
2803 | { | |
2804 | interrupt_query (); | |
2805 | signal (SIGINT, handle_remote_sigint); | |
2806 | } | |
43ff13b4 JM |
2807 | } |
2808 | ||
2809 | /* Reinstall the usual SIGINT handlers, after the target has | |
2810 | stopped. */ | |
6426a772 JM |
2811 | static void |
2812 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2813 | { |
2814 | signal (SIGINT, handle_sigint); | |
2815 | if (sigint_remote_twice_token) | |
c2c6d25f | 2816 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2817 | if (sigint_remote_token) |
c2c6d25f | 2818 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2819 | } |
2820 | ||
c906108c SS |
2821 | /* Send ^C to target to halt it. Target will respond, and send us a |
2822 | packet. */ | |
507f3c78 | 2823 | static void (*ofunc) (int); |
c906108c | 2824 | |
7a292a7a SS |
2825 | /* The command line interface's stop routine. This function is installed |
2826 | as a signal handler for SIGINT. The first time a user requests a | |
2827 | stop, we call remote_stop to send a break or ^C. If there is no | |
2828 | response from the target (it didn't stop when the user requested it), | |
2829 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2830 | static void |
fba45db2 | 2831 | remote_interrupt (int signo) |
c906108c | 2832 | { |
7a292a7a SS |
2833 | /* If this doesn't work, try more severe steps. */ |
2834 | signal (signo, remote_interrupt_twice); | |
2835 | ||
2836 | if (remote_debug) | |
0f71a2f6 | 2837 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2838 | |
2839 | target_stop (); | |
2840 | } | |
2841 | ||
2842 | /* The user typed ^C twice. */ | |
2843 | ||
2844 | static void | |
fba45db2 | 2845 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2846 | { |
2847 | signal (signo, ofunc); | |
2848 | interrupt_query (); | |
c906108c SS |
2849 | signal (signo, remote_interrupt); |
2850 | } | |
7a292a7a SS |
2851 | |
2852 | /* This is the generic stop called via the target vector. When a target | |
2853 | interrupt is requested, either by the command line or the GUI, we | |
2854 | will eventually end up here. */ | |
c906108c | 2855 | static void |
fba45db2 | 2856 | remote_stop (void) |
c906108c | 2857 | { |
7a292a7a SS |
2858 | /* Send a break or a ^C, depending on user preference. */ |
2859 | if (remote_debug) | |
0f71a2f6 | 2860 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2861 | |
7a292a7a | 2862 | if (remote_break) |
2cd58942 | 2863 | serial_send_break (remote_desc); |
c906108c | 2864 | else |
2cd58942 | 2865 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2866 | } |
2867 | ||
2868 | /* Ask the user what to do when an interrupt is received. */ | |
2869 | ||
2870 | static void | |
fba45db2 | 2871 | interrupt_query (void) |
c906108c SS |
2872 | { |
2873 | target_terminal_ours (); | |
2874 | ||
2875 | if (query ("Interrupted while waiting for the program.\n\ | |
2876 | Give up (and stop debugging it)? ")) | |
2877 | { | |
2878 | target_mourn_inferior (); | |
2879 | return_to_top_level (RETURN_QUIT); | |
2880 | } | |
2881 | ||
2882 | target_terminal_inferior (); | |
2883 | } | |
2884 | ||
6426a772 JM |
2885 | /* Enable/disable target terminal ownership. Most targets can use |
2886 | terminal groups to control terminal ownership. Remote targets are | |
2887 | different in that explicit transfer of ownership to/from GDB/target | |
2888 | is required. */ | |
2889 | ||
2890 | static void | |
2891 | remote_async_terminal_inferior (void) | |
2892 | { | |
2893 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2894 | sync_execution here. This function should only be called when | |
2895 | GDB is resuming the inferior in the forground. A background | |
2896 | resume (``run&'') should leave GDB in control of the terminal and | |
2897 | consequently should not call this code. */ | |
2898 | if (!sync_execution) | |
2899 | return; | |
2900 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2901 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2902 | to an asynchronous target with a synchronous command calls this | |
2903 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2904 | stops trying to transfer the terminal to the target when it | |
2905 | shouldn't this guard can go away. */ | |
2906 | if (!remote_async_terminal_ours_p) | |
2907 | return; | |
2908 | delete_file_handler (input_fd); | |
2909 | remote_async_terminal_ours_p = 0; | |
2910 | initialize_sigint_signal_handler (); | |
2911 | /* NOTE: At this point we could also register our selves as the | |
2912 | recipient of all input. Any characters typed could then be | |
2913 | passed on down to the target. */ | |
2914 | } | |
2915 | ||
2916 | static void | |
2917 | remote_async_terminal_ours (void) | |
2918 | { | |
2919 | /* See FIXME in remote_async_terminal_inferior. */ | |
2920 | if (!sync_execution) | |
2921 | return; | |
2922 | /* See FIXME in remote_async_terminal_inferior. */ | |
2923 | if (remote_async_terminal_ours_p) | |
2924 | return; | |
2925 | cleanup_sigint_signal_handler (NULL); | |
2926 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2927 | remote_async_terminal_ours_p = 1; | |
2928 | } | |
2929 | ||
c906108c SS |
2930 | /* If nonzero, ignore the next kill. */ |
2931 | ||
2932 | int kill_kludge; | |
2933 | ||
2934 | void | |
917317f4 | 2935 | remote_console_output (char *msg) |
c906108c SS |
2936 | { |
2937 | char *p; | |
2938 | ||
c5aa993b | 2939 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2940 | { |
2941 | char tb[2]; | |
2942 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2943 | tb[0] = c; | |
2944 | tb[1] = 0; | |
43ff13b4 | 2945 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2946 | } |
917317f4 | 2947 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2948 | } |
2949 | ||
0f71a2f6 JM |
2950 | /* Wait until the remote machine stops, then return, |
2951 | storing status in STATUS just as `wait' would. | |
2952 | Returns "pid", which in the case of a multi-threaded | |
2953 | remote OS, is the thread-id. */ | |
c906108c | 2954 | |
39f77062 KB |
2955 | static ptid_t |
2956 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2957 | { |
d01949b6 AC |
2958 | struct remote_state *rs = get_remote_state (); |
2959 | unsigned char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2960 | int thread_num = -1; |
2961 | ||
2962 | status->kind = TARGET_WAITKIND_EXITED; | |
2963 | status->value.integer = 0; | |
2964 | ||
2965 | while (1) | |
2966 | { | |
2967 | unsigned char *p; | |
2968 | ||
c906108c | 2969 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2970 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2971 | signal (SIGINT, ofunc); |
2972 | ||
2973 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2974 | collection of trace data) every time the target stops. */ |
c906108c SS |
2975 | if (target_wait_loop_hook) |
2976 | (*target_wait_loop_hook) (); | |
2977 | ||
2978 | switch (buf[0]) | |
2979 | { | |
2980 | case 'E': /* Error of some sort */ | |
2981 | warning ("Remote failure reply: %s", buf); | |
2982 | continue; | |
2983 | case 'T': /* Status with PC, SP, FP, ... */ | |
2984 | { | |
2985 | int i; | |
e6cbd02a | 2986 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
c906108c SS |
2987 | |
2988 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2989 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2990 | ss = signal number |
2991 | n... = register number | |
2992 | r... = register contents | |
2993 | */ | |
c906108c SS |
2994 | p = &buf[3]; /* after Txx */ |
2995 | ||
2996 | while (*p) | |
2997 | { | |
2998 | unsigned char *p1; | |
2999 | char *p_temp; | |
97345198 | 3000 | int fieldsize; |
c906108c | 3001 | |
ad10f812 AC |
3002 | /* Read the ``P'' register number. */ |
3003 | LONGEST pnum = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 3004 | p1 = (unsigned char *) p_temp; |
c906108c | 3005 | |
c5aa993b | 3006 | if (p1 == p) /* No register number present here */ |
c906108c SS |
3007 | { |
3008 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
3009 | if (p1 == NULL) | |
3010 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3011 | Packet: '%s'\n", | |
3012 | p, buf); | |
3013 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
3014 | { | |
3015 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3016 | record_currthread (thread_num); | |
3017 | p = (unsigned char *) p_temp; | |
3018 | } | |
3019 | } | |
3020 | else | |
3021 | { | |
ad10f812 | 3022 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
3023 | p = p1; |
3024 | ||
3025 | if (*p++ != ':') | |
3026 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3027 | Packet: '%s'\n", | |
3028 | p, buf); | |
3029 | ||
ad10f812 AC |
3030 | if (reg == NULL) |
3031 | warning ("Remote sent bad register number %s: %s\n\ | |
c906108c | 3032 | Packet: '%s'\n", |
ad10f812 | 3033 | phex_nz (pnum, 0), p, buf); |
c906108c | 3034 | |
ad10f812 | 3035 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum)); |
97345198 | 3036 | p += 2 * fieldsize; |
ad10f812 | 3037 | if (fieldsize < REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3038 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3039 | supply_register (reg->regnum, regs); |
c906108c SS |
3040 | } |
3041 | ||
3042 | if (*p++ != ';') | |
3043 | { | |
3044 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3045 | warning (" here: %s", p); |
c906108c SS |
3046 | } |
3047 | } | |
3048 | } | |
3049 | /* fall through */ | |
3050 | case 'S': /* Old style status, just signal only */ | |
3051 | status->kind = TARGET_WAITKIND_STOPPED; | |
3052 | status->value.sig = (enum target_signal) | |
3053 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3054 | ||
0f71a2f6 JM |
3055 | if (buf[3] == 'p') |
3056 | { | |
3057 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3058 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3059 | |
3060 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3061 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3062 | value_from_string ("PDEBUG-")); |
3063 | cisco_kernel_mode = 0; | |
3064 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3065 | record_currthread (thread_num); | |
3066 | } | |
3067 | else if (buf[3] == 'k') | |
3068 | { | |
3069 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3070 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3071 | |
3072 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3073 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3074 | value_from_string ("KDEBUG-")); |
3075 | cisco_kernel_mode = 1; | |
3076 | } | |
c906108c | 3077 | goto got_status; |
0f71a2f6 JM |
3078 | case 'N': /* Cisco special: status and offsets */ |
3079 | { | |
3080 | bfd_vma text_addr, data_addr, bss_addr; | |
3081 | bfd_signed_vma text_off, data_off, bss_off; | |
3082 | unsigned char *p1; | |
3083 | ||
3084 | status->kind = TARGET_WAITKIND_STOPPED; | |
3085 | status->value.sig = (enum target_signal) | |
3086 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3087 | ||
c5aa993b | 3088 | if (symfile_objfile == NULL) |
0f71a2f6 | 3089 | { |
d4f3574e | 3090 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
3091 | Packet Dropped"); |
3092 | goto got_status; | |
3093 | } | |
3094 | ||
3095 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3096 | * where AA is the signal number, TT is the new text | |
3097 | * address, DD * is the new data address, and BB is the | |
3098 | * new bss address. */ | |
3099 | ||
3100 | p = &buf[3]; | |
3101 | text_addr = strtoul (p, (char **) &p1, 16); | |
3102 | if (p1 == p || *p1 != ';') | |
3103 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3104 | p = p1 + 1; | |
3105 | data_addr = strtoul (p, (char **) &p1, 16); | |
3106 | if (p1 == p || *p1 != ';') | |
3107 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3108 | p = p1 + 1; | |
3109 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3110 | if (p1 == p) |
0f71a2f6 JM |
3111 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3112 | ||
3113 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3114 | &text_off, &data_off, &bss_off) | |
3115 | == 0) | |
c5aa993b | 3116 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
3117 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3118 | ||
3119 | goto got_status; | |
3120 | } | |
c906108c SS |
3121 | case 'W': /* Target exited */ |
3122 | { | |
3123 | /* The remote process exited. */ | |
3124 | status->kind = TARGET_WAITKIND_EXITED; | |
3125 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3126 | goto got_status; | |
3127 | } | |
3128 | case 'X': | |
3129 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3130 | status->value.sig = (enum target_signal) | |
3131 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3132 | kill_kludge = 1; | |
3133 | ||
3134 | goto got_status; | |
3135 | case 'O': /* Console output */ | |
3136 | remote_console_output (buf + 1); | |
3137 | continue; | |
3138 | case '\0': | |
3139 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3140 | { | |
3141 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3142 | the remote system doesn't support it. */ |
c906108c SS |
3143 | target_terminal_ours_for_output (); |
3144 | printf_filtered | |
3145 | ("Can't send signals to this remote system. %s not sent.\n", | |
3146 | target_signal_to_name (last_sent_signal)); | |
3147 | last_sent_signal = TARGET_SIGNAL_0; | |
3148 | target_terminal_inferior (); | |
3149 | ||
3150 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3151 | putpkt ((char *) buf); | |
3152 | continue; | |
3153 | } | |
3154 | /* else fallthrough */ | |
3155 | default: | |
3156 | warning ("Invalid remote reply: %s", buf); | |
3157 | continue; | |
3158 | } | |
3159 | } | |
c5aa993b | 3160 | got_status: |
c906108c SS |
3161 | if (thread_num != -1) |
3162 | { | |
39f77062 | 3163 | return pid_to_ptid (thread_num); |
c906108c | 3164 | } |
39f77062 | 3165 | return inferior_ptid; |
c906108c SS |
3166 | } |
3167 | ||
43ff13b4 | 3168 | /* Async version of remote_wait. */ |
39f77062 KB |
3169 | static ptid_t |
3170 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3171 | { |
d01949b6 AC |
3172 | struct remote_state *rs = get_remote_state (); |
3173 | unsigned char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
3174 | int thread_num = -1; |
3175 | ||
3176 | status->kind = TARGET_WAITKIND_EXITED; | |
3177 | status->value.integer = 0; | |
3178 | ||
3179 | while (1) | |
3180 | { | |
3181 | unsigned char *p; | |
c5aa993b | 3182 | |
ed9a39eb | 3183 | if (!target_is_async_p ()) |
43ff13b4 | 3184 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3185 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3186 | _never_ wait for ever -> test on target_is_async_p(). | |
3187 | However, before we do that we need to ensure that the caller | |
3188 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 3189 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3190 | if (!target_is_async_p ()) |
43ff13b4 JM |
3191 | signal (SIGINT, ofunc); |
3192 | ||
3193 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3194 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
3195 | if (target_wait_loop_hook) |
3196 | (*target_wait_loop_hook) (); | |
3197 | ||
3198 | switch (buf[0]) | |
3199 | { | |
3200 | case 'E': /* Error of some sort */ | |
3201 | warning ("Remote failure reply: %s", buf); | |
3202 | continue; | |
3203 | case 'T': /* Status with PC, SP, FP, ... */ | |
3204 | { | |
3205 | int i; | |
e6cbd02a | 3206 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
43ff13b4 JM |
3207 | |
3208 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3209 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3210 | ss = signal number |
3211 | n... = register number | |
3212 | r... = register contents | |
3213 | */ | |
43ff13b4 JM |
3214 | p = &buf[3]; /* after Txx */ |
3215 | ||
3216 | while (*p) | |
3217 | { | |
3218 | unsigned char *p1; | |
3219 | char *p_temp; | |
6c3f2dbf | 3220 | int fieldsize; |
43ff13b4 JM |
3221 | |
3222 | /* Read the register number */ | |
ad10f812 | 3223 | long pnum = strtol ((const char *) p, &p_temp, 16); |
c5aa993b | 3224 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 3225 | |
c5aa993b | 3226 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
3227 | { |
3228 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
3229 | if (p1 == NULL) | |
3230 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3231 | Packet: '%s'\n", | |
3232 | p, buf); | |
3233 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
3234 | { | |
3235 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3236 | record_currthread (thread_num); | |
3237 | p = (unsigned char *) p_temp; | |
3238 | } | |
3239 | } | |
3240 | else | |
3241 | { | |
ad10f812 | 3242 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3243 | p = p1; |
43ff13b4 JM |
3244 | if (*p++ != ':') |
3245 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3246 | Packet: '%s'\n", | |
3247 | p, buf); | |
3248 | ||
ad10f812 | 3249 | if (reg == NULL) |
43ff13b4 JM |
3250 | warning ("Remote sent bad register number %ld: %s\n\ |
3251 | Packet: '%s'\n", | |
ad10f812 | 3252 | pnum, p, buf); |
43ff13b4 | 3253 | |
ad10f812 | 3254 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum)); |
6c3f2dbf | 3255 | p += 2 * fieldsize; |
ad10f812 | 3256 | if (fieldsize < REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3257 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3258 | supply_register (reg->regnum, regs); |
43ff13b4 JM |
3259 | } |
3260 | ||
3261 | if (*p++ != ';') | |
3262 | { | |
3263 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3264 | warning (" here: %s", p); |
43ff13b4 JM |
3265 | } |
3266 | } | |
3267 | } | |
3268 | /* fall through */ | |
3269 | case 'S': /* Old style status, just signal only */ | |
3270 | status->kind = TARGET_WAITKIND_STOPPED; | |
3271 | status->value.sig = (enum target_signal) | |
3272 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3273 | ||
3274 | if (buf[3] == 'p') | |
3275 | { | |
3276 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3277 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3278 | |
3279 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3280 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3281 | value_from_string ("PDEBUG-")); |
3282 | cisco_kernel_mode = 0; | |
3283 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3284 | record_currthread (thread_num); | |
3285 | } | |
3286 | else if (buf[3] == 'k') | |
3287 | { | |
3288 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3289 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3290 | |
3291 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3292 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3293 | value_from_string ("KDEBUG-")); |
3294 | cisco_kernel_mode = 1; | |
3295 | } | |
3296 | goto got_status; | |
3297 | case 'N': /* Cisco special: status and offsets */ | |
3298 | { | |
3299 | bfd_vma text_addr, data_addr, bss_addr; | |
3300 | bfd_signed_vma text_off, data_off, bss_off; | |
3301 | unsigned char *p1; | |
3302 | ||
3303 | status->kind = TARGET_WAITKIND_STOPPED; | |
3304 | status->value.sig = (enum target_signal) | |
3305 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3306 | ||
c5aa993b | 3307 | if (symfile_objfile == NULL) |
43ff13b4 JM |
3308 | { |
3309 | warning ("Relocation packet recieved with no symbol file. \ | |
3310 | Packet Dropped"); | |
3311 | goto got_status; | |
3312 | } | |
3313 | ||
3314 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3315 | * where AA is the signal number, TT is the new text | |
3316 | * address, DD * is the new data address, and BB is the | |
3317 | * new bss address. */ | |
3318 | ||
3319 | p = &buf[3]; | |
3320 | text_addr = strtoul (p, (char **) &p1, 16); | |
3321 | if (p1 == p || *p1 != ';') | |
3322 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3323 | p = p1 + 1; | |
3324 | data_addr = strtoul (p, (char **) &p1, 16); | |
3325 | if (p1 == p || *p1 != ';') | |
3326 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3327 | p = p1 + 1; | |
3328 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3329 | if (p1 == p) |
43ff13b4 JM |
3330 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3331 | ||
3332 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3333 | &text_off, &data_off, &bss_off) | |
3334 | == 0) | |
c5aa993b | 3335 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
3336 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3337 | ||
3338 | goto got_status; | |
3339 | } | |
3340 | case 'W': /* Target exited */ | |
3341 | { | |
3342 | /* The remote process exited. */ | |
3343 | status->kind = TARGET_WAITKIND_EXITED; | |
3344 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3345 | goto got_status; | |
3346 | } | |
3347 | case 'X': | |
3348 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3349 | status->value.sig = (enum target_signal) | |
3350 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3351 | kill_kludge = 1; | |
3352 | ||
3353 | goto got_status; | |
3354 | case 'O': /* Console output */ | |
3355 | remote_console_output (buf + 1); | |
c4093a6a JM |
3356 | /* Return immediately to the event loop. The event loop will |
3357 | still be waiting on the inferior afterwards. */ | |
3358 | status->kind = TARGET_WAITKIND_IGNORE; | |
3359 | goto got_status; | |
43ff13b4 JM |
3360 | case '\0': |
3361 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3362 | { | |
3363 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3364 | the remote system doesn't support it. */ |
43ff13b4 JM |
3365 | target_terminal_ours_for_output (); |
3366 | printf_filtered | |
3367 | ("Can't send signals to this remote system. %s not sent.\n", | |
3368 | target_signal_to_name (last_sent_signal)); | |
3369 | last_sent_signal = TARGET_SIGNAL_0; | |
3370 | target_terminal_inferior (); | |
3371 | ||
3372 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3373 | putpkt ((char *) buf); | |
3374 | continue; | |
3375 | } | |
3376 | /* else fallthrough */ | |
3377 | default: | |
3378 | warning ("Invalid remote reply: %s", buf); | |
3379 | continue; | |
3380 | } | |
3381 | } | |
c5aa993b | 3382 | got_status: |
43ff13b4 JM |
3383 | if (thread_num != -1) |
3384 | { | |
39f77062 | 3385 | return pid_to_ptid (thread_num); |
43ff13b4 | 3386 | } |
39f77062 | 3387 | return inferior_ptid; |
43ff13b4 JM |
3388 | } |
3389 | ||
c906108c SS |
3390 | /* Number of bytes of registers this stub implements. */ |
3391 | ||
3392 | static int register_bytes_found; | |
3393 | ||
3394 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3395 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c SS |
3396 | |
3397 | /* ARGSUSED */ | |
3398 | static void | |
ad10f812 | 3399 | remote_fetch_registers (int regnum) |
c906108c | 3400 | { |
d01949b6 AC |
3401 | struct remote_state *rs = get_remote_state (); |
3402 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3403 | int i; |
3404 | char *p; | |
ad10f812 | 3405 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3406 | |
39f77062 | 3407 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c SS |
3408 | |
3409 | sprintf (buf, "g"); | |
d01949b6 | 3410 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3411 | |
11cf8741 JM |
3412 | /* Save the size of the packet sent to us by the target. Its used |
3413 | as a heuristic when determining the max size of packets that the | |
3414 | target can safely receive. */ | |
d01949b6 AC |
3415 | if ((rs->actual_register_packet_size) == 0) |
3416 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3417 | |
3418 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3419 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3420 | |
3421 | /* We can get out of synch in various cases. If the first character | |
3422 | in the buffer is not a hex character, assume that has happened | |
3423 | and try to fetch another packet to read. */ | |
3424 | while ((buf[0] < '0' || buf[0] > '9') | |
3425 | && (buf[0] < 'a' || buf[0] > 'f') | |
3426 | && buf[0] != 'x') /* New: unavailable register value */ | |
3427 | { | |
3428 | if (remote_debug) | |
0f71a2f6 JM |
3429 | fprintf_unfiltered (gdb_stdlog, |
3430 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3431 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3432 | } |
3433 | ||
3434 | /* Reply describes registers byte by byte, each byte encoded as two | |
3435 | hex characters. Suck them all up, then supply them to the | |
3436 | register cacheing/storage mechanism. */ | |
3437 | ||
3438 | p = buf; | |
ad10f812 | 3439 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3440 | { |
3441 | if (p[0] == 0) | |
3442 | break; | |
3443 | if (p[1] == 0) | |
3444 | { | |
3445 | warning ("Remote reply is of odd length: %s", buf); | |
3446 | /* Don't change register_bytes_found in this case, and don't | |
3447 | print a second warning. */ | |
3448 | goto supply_them; | |
3449 | } | |
3450 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3451 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3452 | else |
3453 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3454 | p += 2; | |
3455 | } | |
3456 | ||
3457 | if (i != register_bytes_found) | |
3458 | { | |
3459 | register_bytes_found = i; | |
2649061d AC |
3460 | if (REGISTER_BYTES_OK_P () |
3461 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3462 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3463 | } |
c5aa993b JM |
3464 | |
3465 | supply_them: | |
ad10f812 AC |
3466 | { |
3467 | struct packet_reg *g; | |
3468 | for (g = rs->g_packet; g->offset >= 0; g++) | |
3469 | { | |
3470 | supply_register (g->regnum, regs + g->offset); | |
3471 | if (buf[g->offset * 2] == 'x') | |
3472 | set_register_cached (i, -1); | |
3473 | } | |
3474 | } | |
c906108c SS |
3475 | } |
3476 | ||
3477 | /* Prepare to store registers. Since we may send them all (using a | |
3478 | 'G' request), we have to read out the ones we don't want to change | |
3479 | first. */ | |
3480 | ||
c5aa993b | 3481 | static void |
fba45db2 | 3482 | remote_prepare_to_store (void) |
c906108c SS |
3483 | { |
3484 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
3485 | switch (remote_protocol_P.support) |
3486 | { | |
3487 | case PACKET_DISABLE: | |
3488 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 AC |
3489 | /* NOTE: This isn't rs->sizeof_g_packet because here, we are |
3490 | forcing the register cache to read its and not the target | |
3491 | registers. */ | |
3492 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); /* OK use. */ | |
5a2468f5 JM |
3493 | break; |
3494 | case PACKET_ENABLE: | |
3495 | break; | |
3496 | } | |
3497 | } | |
3498 | ||
ad10f812 | 3499 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
5a2468f5 JM |
3500 | packet was not recognized. */ |
3501 | ||
3502 | static int | |
ad10f812 | 3503 | store_register_using_P (int regnum) |
5a2468f5 | 3504 | { |
d01949b6 | 3505 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3506 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3507 | /* Try storing a single register. */ |
d01949b6 | 3508 | char *buf = alloca (rs->remote_packet_size); |
193cb69f | 3509 | char *regp = alloca (MAX_REGISTER_RAW_SIZE); |
5a2468f5 JM |
3510 | char *p; |
3511 | int i; | |
3512 | ||
ad10f812 | 3513 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3514 | p = buf + strlen (buf); |
ad10f812 AC |
3515 | regcache_collect (reg->regnum, regp); |
3516 | bin2hex (regp, p, REGISTER_RAW_SIZE (reg->regnum)); | |
3517 | remote_send (buf, rs->remote_packet_size); | |
5a2468f5 JM |
3518 | |
3519 | return buf[0] != '\0'; | |
c906108c SS |
3520 | } |
3521 | ||
5a2468f5 | 3522 | |
ad10f812 | 3523 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents |
7302a204 | 3524 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3525 | |
3526 | static void | |
ad10f812 | 3527 | remote_store_registers (int regnum) |
c906108c | 3528 | { |
d01949b6 | 3529 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3530 | char *buf; |
3531 | char *regs; | |
c906108c SS |
3532 | int i; |
3533 | char *p; | |
3534 | ||
39f77062 | 3535 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3536 | |
ad10f812 | 3537 | if (regnum >= 0) |
c906108c | 3538 | { |
5a2468f5 | 3539 | switch (remote_protocol_P.support) |
c906108c | 3540 | { |
5a2468f5 JM |
3541 | case PACKET_DISABLE: |
3542 | break; | |
3543 | case PACKET_ENABLE: | |
ad10f812 | 3544 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3545 | return; |
3546 | else | |
3547 | error ("Protocol error: P packet not recognized by stub"); | |
3548 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3549 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3550 | { |
3551 | /* The stub recognized the 'P' packet. Remember this. */ | |
3552 | remote_protocol_P.support = PACKET_ENABLE; | |
3553 | return; | |
3554 | } | |
3555 | else | |
3556 | { | |
3557 | /* The stub does not support the 'P' packet. Use 'G' | |
3558 | instead, and don't try using 'P' in the future (it | |
3559 | will just waste our time). */ | |
3560 | remote_protocol_P.support = PACKET_DISABLE; | |
3561 | break; | |
3562 | } | |
c906108c | 3563 | } |
c906108c SS |
3564 | } |
3565 | ||
193cb69f AC |
3566 | /* Extract all the registers in the regcache copying them into a |
3567 | local buffer. */ | |
3568 | { | |
ad10f812 AC |
3569 | struct packet_reg *g; |
3570 | regs = alloca (rs->sizeof_g_packet); | |
3571 | memset (regs, rs->sizeof_g_packet, 0); | |
3572 | for (g = rs->g_packet; g->offset >= 0; g++) | |
193cb69f | 3573 | { |
ad10f812 | 3574 | regcache_collect (g->regnum, regs + g->offset); |
193cb69f AC |
3575 | } |
3576 | } | |
c906108c SS |
3577 | |
3578 | /* Command describes registers byte by byte, | |
3579 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3580 | buf = alloca (rs->remote_packet_size); |
3581 | p = buf; | |
3582 | *p++ = 'G'; | |
c906108c | 3583 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3584 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3585 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3586 | } |
c906108c SS |
3587 | \f |
3588 | ||
3589 | /* Return the number of hex digits in num. */ | |
3590 | ||
3591 | static int | |
fba45db2 | 3592 | hexnumlen (ULONGEST num) |
c906108c SS |
3593 | { |
3594 | int i; | |
3595 | ||
3596 | for (i = 0; num != 0; i++) | |
3597 | num >>= 4; | |
3598 | ||
3599 | return max (i, 1); | |
3600 | } | |
3601 | ||
2df3850c | 3602 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3603 | |
3604 | static int | |
fba45db2 | 3605 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3606 | { |
c906108c | 3607 | int len = hexnumlen (num); |
2df3850c JM |
3608 | return hexnumnstr (buf, num, len); |
3609 | } | |
3610 | ||
c906108c | 3611 | |
2df3850c | 3612 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3613 | |
2df3850c | 3614 | static int |
fba45db2 | 3615 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3616 | { |
3617 | int i; | |
3618 | ||
3619 | buf[width] = '\0'; | |
3620 | ||
3621 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3622 | { |
c5aa993b | 3623 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3624 | num >>= 4; |
3625 | } | |
3626 | ||
2df3850c | 3627 | return width; |
c906108c SS |
3628 | } |
3629 | ||
3630 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3631 | ||
3632 | static CORE_ADDR | |
fba45db2 | 3633 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3634 | { |
3635 | if (remote_address_size > 0 | |
3636 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3637 | { | |
3638 | /* Only create a mask when that mask can safely be constructed | |
3639 | in a ULONGEST variable. */ | |
3640 | ULONGEST mask = 1; | |
3641 | mask = (mask << remote_address_size) - 1; | |
3642 | addr &= mask; | |
3643 | } | |
3644 | return addr; | |
3645 | } | |
3646 | ||
3647 | /* Determine whether the remote target supports binary downloading. | |
3648 | This is accomplished by sending a no-op memory write of zero length | |
3649 | to the target at the specified address. It does not suffice to send | |
3650 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3651 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3652 | ||
96baa820 JM |
3653 | NOTE: This can still lose if the serial line is not eight-bit |
3654 | clean. In cases like this, the user should clear "remote | |
3655 | X-packet". */ | |
3656 | ||
c906108c | 3657 | static void |
fba45db2 | 3658 | check_binary_download (CORE_ADDR addr) |
c906108c | 3659 | { |
d01949b6 | 3660 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3661 | switch (remote_protocol_binary_download.support) |
c906108c | 3662 | { |
96baa820 JM |
3663 | case PACKET_DISABLE: |
3664 | break; | |
3665 | case PACKET_ENABLE: | |
3666 | break; | |
3667 | case PACKET_SUPPORT_UNKNOWN: | |
3668 | { | |
d01949b6 | 3669 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
3670 | char *p; |
3671 | ||
3672 | p = buf; | |
3673 | *p++ = 'X'; | |
3674 | p += hexnumstr (p, (ULONGEST) addr); | |
3675 | *p++ = ','; | |
3676 | p += hexnumstr (p, (ULONGEST) 0); | |
3677 | *p++ = ':'; | |
3678 | *p = '\0'; | |
3679 | ||
3680 | putpkt_binary (buf, (int) (p - buf)); | |
d01949b6 | 3681 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3682 | |
96baa820 JM |
3683 | if (buf[0] == '\0') |
3684 | { | |
3685 | if (remote_debug) | |
3686 | fprintf_unfiltered (gdb_stdlog, | |
3687 | "binary downloading NOT suppported by target\n"); | |
3688 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3689 | } | |
3690 | else | |
3691 | { | |
3692 | if (remote_debug) | |
3693 | fprintf_unfiltered (gdb_stdlog, | |
3694 | "binary downloading suppported by target\n"); | |
3695 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3696 | } | |
3697 | break; | |
3698 | } | |
c906108c SS |
3699 | } |
3700 | } | |
3701 | ||
3702 | /* Write memory data directly to the remote machine. | |
3703 | This does not inform the data cache; the data cache uses this. | |
3704 | MEMADDR is the address in the remote memory space. | |
3705 | MYADDR is the address of the buffer in our space. | |
3706 | LEN is the number of bytes. | |
3707 | ||
917317f4 JM |
3708 | Returns number of bytes transferred, or 0 (setting errno) for |
3709 | error. Only transfer a single packet. */ | |
c906108c SS |
3710 | |
3711 | static int | |
917317f4 | 3712 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3713 | { |
917317f4 | 3714 | unsigned char *buf; |
c906108c | 3715 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3716 | unsigned char *p; |
3717 | unsigned char *plen; | |
c2d11a7d | 3718 | long sizeof_buf; |
917317f4 JM |
3719 | int plenlen; |
3720 | int todo; | |
3721 | int nr_bytes; | |
c906108c SS |
3722 | |
3723 | /* Verify that the target can support a binary download */ | |
3724 | check_binary_download (memaddr); | |
3725 | ||
917317f4 | 3726 | /* Determine the max packet size. */ |
11cf8741 | 3727 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3728 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3729 | buf = alloca (sizeof_buf); | |
c906108c | 3730 | |
7a292a7a | 3731 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3732 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3733 | ||
917317f4 JM |
3734 | /* construct "M"<memaddr>","<len>":" */ |
3735 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3736 | p = buf; | |
3737 | ||
3738 | /* Append [XM]. Compute a best guess of the number of bytes | |
3739 | actually transfered. */ | |
3740 | switch (remote_protocol_binary_download.support) | |
c906108c | 3741 | { |
917317f4 JM |
3742 | case PACKET_ENABLE: |
3743 | *p++ = 'X'; | |
3744 | /* Best guess at number of bytes that will fit. */ | |
3745 | todo = min (len, max_buf_size); | |
3746 | break; | |
3747 | case PACKET_DISABLE: | |
3748 | *p++ = 'M'; | |
3749 | /* num bytes that will fit */ | |
3750 | todo = min (len, max_buf_size / 2); | |
3751 | break; | |
3752 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3753 | internal_error (__FILE__, __LINE__, |
3754 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3755 | default: |
8e65ff28 | 3756 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 JM |
3757 | } |
3758 | ||
3759 | /* Append <memaddr> */ | |
3760 | memaddr = remote_address_masked (memaddr); | |
3761 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3762 | *p++ = ','; | |
3763 | ||
3764 | /* Append <len>. Retain the location/size of <len>. It may | |
3765 | need to be adjusted once the packet body has been created. */ | |
3766 | plen = p; | |
3767 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3768 | p += plenlen; | |
3769 | *p++ = ':'; | |
3770 | *p = '\0'; | |
3771 | ||
3772 | /* Append the packet body. */ | |
3773 | switch (remote_protocol_binary_download.support) | |
3774 | { | |
3775 | case PACKET_ENABLE: | |
3776 | /* Binary mode. Send target system values byte by byte, in | |
3777 | increasing byte addresses. Only escape certain critical | |
3778 | characters. */ | |
3779 | for (nr_bytes = 0; | |
3780 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3781 | nr_bytes++) | |
c906108c | 3782 | { |
917317f4 JM |
3783 | switch (myaddr[nr_bytes] & 0xff) |
3784 | { | |
3785 | case '$': | |
3786 | case '#': | |
3787 | case 0x7d: | |
3788 | /* These must be escaped */ | |
3789 | *p++ = 0x7d; | |
3790 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3791 | break; | |
3792 | default: | |
3793 | *p++ = myaddr[nr_bytes] & 0xff; | |
3794 | break; | |
3795 | } | |
c906108c | 3796 | } |
917317f4 | 3797 | if (nr_bytes < todo) |
c906108c | 3798 | { |
917317f4 JM |
3799 | /* Escape chars have filled up the buffer prematurely, |
3800 | and we have actually sent fewer bytes than planned. | |
3801 | Fix-up the length field of the packet. Use the same | |
3802 | number of characters as before. */ | |
3803 | ||
3804 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3805 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3806 | } |
917317f4 JM |
3807 | break; |
3808 | case PACKET_DISABLE: | |
3809 | /* Normal mode: Send target system values byte by byte, in | |
3810 | increasing byte addresses. Each byte is encoded as a two hex | |
3811 | value. */ | |
2644f393 | 3812 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3813 | p += 2 * nr_bytes; |
917317f4 JM |
3814 | break; |
3815 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3816 | internal_error (__FILE__, __LINE__, |
3817 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3818 | default: |
8e65ff28 | 3819 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3820 | } |
917317f4 JM |
3821 | |
3822 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3823 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3824 | |
3825 | if (buf[0] == 'E') | |
3826 | { | |
3827 | /* There is no correspondance between what the remote protocol | |
3828 | uses for errors and errno codes. We would like a cleaner way | |
3829 | of representing errors (big enough to include errno codes, | |
3830 | bfd_error codes, and others). But for now just return EIO. */ | |
3831 | errno = EIO; | |
3832 | return 0; | |
3833 | } | |
3834 | ||
3835 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3836 | bytes than we'd planned. */ | |
3837 | return nr_bytes; | |
c906108c SS |
3838 | } |
3839 | ||
3840 | /* Read memory data directly from the remote machine. | |
3841 | This does not use the data cache; the data cache uses this. | |
3842 | MEMADDR is the address in the remote memory space. | |
3843 | MYADDR is the address of the buffer in our space. | |
3844 | LEN is the number of bytes. | |
3845 | ||
3846 | Returns number of bytes transferred, or 0 for error. */ | |
3847 | ||
917317f4 JM |
3848 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3849 | remote targets) shouldn't attempt to read the entire buffer. | |
3850 | Instead it should read a single packet worth of data and then | |
3851 | return the byte size of that packet to the caller. The caller (its | |
3852 | caller and its callers caller ;-) already contains code for | |
3853 | handling partial reads. */ | |
3854 | ||
c906108c | 3855 | static int |
fba45db2 | 3856 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3857 | { |
11cf8741 | 3858 | char *buf; |
c906108c | 3859 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3860 | long sizeof_buf; |
c906108c SS |
3861 | int origlen; |
3862 | ||
11cf8741 JM |
3863 | /* Create a buffer big enough for this packet. */ |
3864 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3865 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3866 | buf = alloca (sizeof_buf); | |
c906108c SS |
3867 | |
3868 | origlen = len; | |
3869 | while (len > 0) | |
3870 | { | |
c906108c SS |
3871 | char *p; |
3872 | int todo; | |
3873 | int i; | |
3874 | ||
c5aa993b | 3875 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3876 | |
3877 | /* construct "m"<memaddr>","<len>" */ | |
3878 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3879 | memaddr = remote_address_masked (memaddr); | |
3880 | p = buf; | |
3881 | *p++ = 'm'; | |
3882 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3883 | *p++ = ','; | |
3884 | p += hexnumstr (p, (ULONGEST) todo); | |
3885 | *p = '\0'; | |
3886 | ||
3887 | putpkt (buf); | |
c2d11a7d | 3888 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3889 | |
3890 | if (buf[0] == 'E') | |
3891 | { | |
3892 | /* There is no correspondance between what the remote protocol uses | |
3893 | for errors and errno codes. We would like a cleaner way of | |
3894 | representing errors (big enough to include errno codes, bfd_error | |
3895 | codes, and others). But for now just return EIO. */ | |
3896 | errno = EIO; | |
3897 | return 0; | |
3898 | } | |
3899 | ||
c5aa993b JM |
3900 | /* Reply describes memory byte by byte, |
3901 | each byte encoded as two hex characters. */ | |
c906108c SS |
3902 | |
3903 | p = buf; | |
30559e10 | 3904 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3905 | { |
30559e10 MS |
3906 | /* Reply is short. This means that we were able to read |
3907 | only part of what we wanted to. */ | |
3908 | return i + (origlen - len); | |
c906108c SS |
3909 | } |
3910 | myaddr += todo; | |
3911 | memaddr += todo; | |
3912 | len -= todo; | |
3913 | } | |
3914 | return origlen; | |
3915 | } | |
3916 | \f | |
3917 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3918 | transferring to or from debugger address BUFFER. Write to inferior if |
3919 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3920 | for error. TARGET is unused. */ |
392a587b | 3921 | |
c906108c SS |
3922 | /* ARGSUSED */ |
3923 | static int | |
c338868a | 3924 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
29e57380 C |
3925 | int should_write, |
3926 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, | |
3927 | struct target_ops *target) | |
c906108c | 3928 | { |
392a587b JM |
3929 | CORE_ADDR targ_addr; |
3930 | int targ_len; | |
4930751a C |
3931 | int res; |
3932 | ||
392a587b JM |
3933 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); |
3934 | if (targ_len <= 0) | |
c906108c | 3935 | return 0; |
c906108c | 3936 | |
4930751a C |
3937 | if (should_write) |
3938 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3939 | else | |
3940 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3941 | ||
3942 | return res; | |
c906108c SS |
3943 | } |
3944 | ||
c5aa993b | 3945 | |
c906108c SS |
3946 | #if 0 |
3947 | /* Enable after 4.12. */ | |
3948 | ||
3949 | void | |
c338868a KB |
3950 | remote_search (int len, char *data, char *mask, CORE_ADDR startaddr, |
3951 | int increment, CORE_ADDR lorange, CORE_ADDR hirange, | |
3952 | CORE_ADDR *addr_found, char *data_found) | |
c906108c SS |
3953 | { |
3954 | if (increment == -4 && len == 4) | |
3955 | { | |
3956 | long mask_long, data_long; | |
3957 | long data_found_long; | |
3958 | CORE_ADDR addr_we_found; | |
d01949b6 | 3959 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
3960 | long returned_long[2]; |
3961 | char *p; | |
3962 | ||
3963 | mask_long = extract_unsigned_integer (mask, len); | |
3964 | data_long = extract_unsigned_integer (data, len); | |
3965 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3966 | putpkt (buf); | |
d01949b6 | 3967 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3968 | if (buf[0] == '\0') |
3969 | { | |
3970 | /* The stub doesn't support the 't' request. We might want to | |
3971 | remember this fact, but on the other hand the stub could be | |
3972 | switched on us. Maybe we should remember it only until | |
3973 | the next "target remote". */ | |
3974 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3975 | hirange, addr_found, data_found); | |
3976 | return; | |
3977 | } | |
3978 | ||
3979 | if (buf[0] == 'E') | |
3980 | /* There is no correspondance between what the remote protocol uses | |
3981 | for errors and errno codes. We would like a cleaner way of | |
3982 | representing errors (big enough to include errno codes, bfd_error | |
3983 | codes, and others). But for now just use EIO. */ | |
3984 | memory_error (EIO, startaddr); | |
3985 | p = buf; | |
3986 | addr_we_found = 0; | |
3987 | while (*p != '\0' && *p != ',') | |
3988 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
3989 | if (*p == '\0') | |
3990 | error ("Protocol error: short return for search"); | |
3991 | ||
3992 | data_found_long = 0; | |
3993 | while (*p != '\0' && *p != ',') | |
3994 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
3995 | /* Ignore anything after this comma, for future extensions. */ | |
3996 | ||
3997 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
3998 | { | |
3999 | *addr_found = 0; | |
4000 | return; | |
4001 | } | |
4002 | ||
4003 | *addr_found = addr_we_found; | |
4004 | *data_found = store_unsigned_integer (data_we_found, len); | |
4005 | return; | |
4006 | } | |
4007 | generic_search (len, data, mask, startaddr, increment, lorange, | |
4008 | hirange, addr_found, data_found); | |
4009 | } | |
4010 | #endif /* 0 */ | |
4011 | \f | |
4012 | static void | |
fba45db2 | 4013 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4014 | { |
4015 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4016 | } | |
4017 | \f | |
4018 | /* Stuff for dealing with the packets which are part of this protocol. | |
4019 | See comment at top of file for details. */ | |
4020 | ||
4021 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
4022 | ||
4023 | static int | |
fba45db2 | 4024 | readchar (int timeout) |
c906108c SS |
4025 | { |
4026 | int ch; | |
4027 | ||
2cd58942 | 4028 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4029 | |
2acceee2 JM |
4030 | if (ch >= 0) |
4031 | return (ch & 0x7f); | |
4032 | ||
4033 | switch ((enum serial_rc) ch) | |
c906108c SS |
4034 | { |
4035 | case SERIAL_EOF: | |
2acceee2 | 4036 | target_mourn_inferior (); |
c906108c | 4037 | error ("Remote connection closed"); |
2acceee2 | 4038 | /* no return */ |
c906108c SS |
4039 | case SERIAL_ERROR: |
4040 | perror_with_name ("Remote communication error"); | |
2acceee2 | 4041 | /* no return */ |
c906108c | 4042 | case SERIAL_TIMEOUT: |
2acceee2 | 4043 | break; |
c906108c | 4044 | } |
2acceee2 | 4045 | return ch; |
c906108c SS |
4046 | } |
4047 | ||
4048 | /* Send the command in BUF to the remote machine, and read the reply | |
4049 | into BUF. Report an error if we get an error reply. */ | |
4050 | ||
4051 | static void | |
c2d11a7d JM |
4052 | remote_send (char *buf, |
4053 | long sizeof_buf) | |
c906108c SS |
4054 | { |
4055 | putpkt (buf); | |
c2d11a7d | 4056 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
4057 | |
4058 | if (buf[0] == 'E') | |
4059 | error ("Remote failure reply: %s", buf); | |
4060 | } | |
4061 | ||
4062 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4063 | string notation. */ | |
4064 | ||
4065 | static void | |
fba45db2 | 4066 | print_packet (char *buf) |
c906108c SS |
4067 | { |
4068 | puts_filtered ("\""); | |
43e526b9 | 4069 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4070 | puts_filtered ("\""); |
4071 | } | |
4072 | ||
4073 | int | |
fba45db2 | 4074 | putpkt (char *buf) |
c906108c SS |
4075 | { |
4076 | return putpkt_binary (buf, strlen (buf)); | |
4077 | } | |
4078 | ||
4079 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 4080 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
4081 | to account for the $, # and checksum, and for a possible /0 if we are |
4082 | debugging (remote_debug) and want to print the sent packet as a string */ | |
4083 | ||
4084 | static int | |
fba45db2 | 4085 | putpkt_binary (char *buf, int cnt) |
c906108c | 4086 | { |
d01949b6 | 4087 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4088 | int i; |
4089 | unsigned char csum = 0; | |
11cf8741 | 4090 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 4091 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 4092 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 4093 | |
c906108c SS |
4094 | int ch; |
4095 | int tcount = 0; | |
4096 | char *p; | |
4097 | ||
4098 | /* Copy the packet into buffer BUF2, encapsulating it | |
4099 | and giving it a checksum. */ | |
4100 | ||
c906108c SS |
4101 | p = buf2; |
4102 | *p++ = '$'; | |
4103 | ||
4104 | for (i = 0; i < cnt; i++) | |
4105 | { | |
4106 | csum += buf[i]; | |
4107 | *p++ = buf[i]; | |
4108 | } | |
4109 | *p++ = '#'; | |
4110 | *p++ = tohex ((csum >> 4) & 0xf); | |
4111 | *p++ = tohex (csum & 0xf); | |
4112 | ||
4113 | /* Send it over and over until we get a positive ack. */ | |
4114 | ||
4115 | while (1) | |
4116 | { | |
4117 | int started_error_output = 0; | |
4118 | ||
4119 | if (remote_debug) | |
4120 | { | |
4121 | *p = '\0'; | |
43e526b9 JM |
4122 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4123 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4124 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4125 | gdb_flush (gdb_stdlog); |
c906108c | 4126 | } |
2cd58942 | 4127 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
4128 | perror_with_name ("putpkt: write failed"); |
4129 | ||
4130 | /* read until either a timeout occurs (-2) or '+' is read */ | |
4131 | while (1) | |
4132 | { | |
4133 | ch = readchar (remote_timeout); | |
4134 | ||
c5aa993b | 4135 | if (remote_debug) |
c906108c SS |
4136 | { |
4137 | switch (ch) | |
4138 | { | |
4139 | case '+': | |
1216fa2c | 4140 | case '-': |
c906108c SS |
4141 | case SERIAL_TIMEOUT: |
4142 | case '$': | |
4143 | if (started_error_output) | |
4144 | { | |
4145 | putchar_unfiltered ('\n'); | |
4146 | started_error_output = 0; | |
4147 | } | |
4148 | } | |
4149 | } | |
4150 | ||
4151 | switch (ch) | |
4152 | { | |
4153 | case '+': | |
4154 | if (remote_debug) | |
0f71a2f6 | 4155 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4156 | return 1; |
1216fa2c AC |
4157 | case '-': |
4158 | if (remote_debug) | |
4159 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4160 | case SERIAL_TIMEOUT: |
c5aa993b | 4161 | tcount++; |
c906108c SS |
4162 | if (tcount > 3) |
4163 | return 0; | |
4164 | break; /* Retransmit buffer */ | |
4165 | case '$': | |
4166 | { | |
40e3f985 FN |
4167 | if (remote_debug) |
4168 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
4169 | /* It's probably an old response, and we're out of sync. |
4170 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 4171 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 4172 | continue; /* Now, go look for + */ |
c906108c SS |
4173 | } |
4174 | default: | |
4175 | if (remote_debug) | |
4176 | { | |
4177 | if (!started_error_output) | |
4178 | { | |
4179 | started_error_output = 1; | |
0f71a2f6 | 4180 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4181 | } |
0f71a2f6 | 4182 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4183 | } |
4184 | continue; | |
4185 | } | |
4186 | break; /* Here to retransmit */ | |
4187 | } | |
4188 | ||
4189 | #if 0 | |
4190 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4191 | able to get out next time we call QUIT, without anything as |
4192 | violent as interrupt_query. If we want to provide a way out of | |
4193 | here without getting to the next QUIT, it should be based on | |
4194 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4195 | if (quit_flag) |
4196 | { | |
4197 | quit_flag = 0; | |
4198 | interrupt_query (); | |
4199 | } | |
4200 | #endif | |
4201 | } | |
4202 | } | |
4203 | ||
0f71a2f6 JM |
4204 | static int remote_cisco_mode; |
4205 | ||
c906108c SS |
4206 | /* Come here after finding the start of the frame. Collect the rest |
4207 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4208 | compression. No more than sizeof_buf-1 characters are read so that |
4209 | the buffer can be NUL terminated. | |
c906108c | 4210 | |
c2d11a7d JM |
4211 | Returns -1 on error, number of characters in buffer (ignoring the |
4212 | trailing NULL) on success. (could be extended to return one of the | |
4213 | SERIAL status indications). */ | |
4214 | ||
4215 | static long | |
4216 | read_frame (char *buf, | |
4217 | long sizeof_buf) | |
c906108c SS |
4218 | { |
4219 | unsigned char csum; | |
c2d11a7d | 4220 | long bc; |
c906108c SS |
4221 | int c; |
4222 | ||
4223 | csum = 0; | |
c2d11a7d | 4224 | bc = 0; |
c906108c SS |
4225 | |
4226 | while (1) | |
4227 | { | |
c2d11a7d | 4228 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4229 | c = readchar (remote_timeout); |
c906108c SS |
4230 | switch (c) |
4231 | { | |
4232 | case SERIAL_TIMEOUT: | |
4233 | if (remote_debug) | |
0f71a2f6 | 4234 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4235 | return -1; |
c906108c SS |
4236 | case '$': |
4237 | if (remote_debug) | |
0f71a2f6 JM |
4238 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4239 | gdb_stdlog); | |
c2d11a7d | 4240 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4241 | case '#': |
4242 | { | |
4243 | unsigned char pktcsum; | |
e1b09194 AC |
4244 | int check_0 = 0; |
4245 | int check_1 = 0; | |
c906108c | 4246 | |
c2d11a7d | 4247 | buf[bc] = '\0'; |
c906108c | 4248 | |
e1b09194 AC |
4249 | check_0 = readchar (remote_timeout); |
4250 | if (check_0 >= 0) | |
4251 | check_1 = readchar (remote_timeout); | |
4252 | ||
4253 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
4254 | { | |
4255 | if (remote_debug) | |
4256 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4257 | return -1; | |
4258 | } | |
4259 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4260 | { |
4261 | if (remote_debug) | |
4262 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4263 | return -1; | |
4264 | } | |
c906108c | 4265 | |
e1b09194 | 4266 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4267 | if (csum == pktcsum) |
c2d11a7d | 4268 | return bc; |
c906108c | 4269 | |
c5aa993b | 4270 | if (remote_debug) |
c906108c | 4271 | { |
0f71a2f6 | 4272 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4273 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4274 | pktcsum, csum); |
4275 | fputs_filtered (buf, gdb_stdlog); | |
4276 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4277 | } |
c2d11a7d JM |
4278 | /* Number of characters in buffer ignoring trailing |
4279 | NUL. */ | |
4280 | return -1; | |
c906108c SS |
4281 | } |
4282 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4283 | { |
4284 | int repeat; | |
4285 | csum += c; | |
c906108c | 4286 | |
c2c6d25f JM |
4287 | if (remote_cisco_mode == 0) |
4288 | { | |
4289 | c = readchar (remote_timeout); | |
4290 | csum += c; | |
4291 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
4292 | } | |
4293 | else | |
4294 | { | |
4295 | /* Cisco's run-length encoding variant uses two | |
4296 | hex chars to represent the repeat count. */ | |
4297 | ||
4298 | c = readchar (remote_timeout); | |
4299 | csum += c; | |
4300 | repeat = fromhex (c) << 4; | |
4301 | c = readchar (remote_timeout); | |
4302 | csum += c; | |
4303 | repeat += fromhex (c); | |
4304 | } | |
c906108c | 4305 | |
c2d11a7d JM |
4306 | /* The character before ``*'' is repeated. */ |
4307 | ||
c2c6d25f | 4308 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4309 | && bc > 0 |
fb6e5c55 | 4310 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4311 | { |
c2d11a7d JM |
4312 | memset (&buf[bc], buf[bc - 1], repeat); |
4313 | bc += repeat; | |
c2c6d25f JM |
4314 | continue; |
4315 | } | |
4316 | ||
c2d11a7d | 4317 | buf[bc] = '\0'; |
c2c6d25f JM |
4318 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4319 | puts_filtered (buf); | |
4320 | puts_filtered ("\n"); | |
c2d11a7d | 4321 | return -1; |
c2c6d25f | 4322 | } |
c906108c | 4323 | default: |
c2d11a7d | 4324 | if (bc < sizeof_buf - 1) |
c906108c | 4325 | { |
c2d11a7d | 4326 | buf[bc++] = c; |
c906108c SS |
4327 | csum += c; |
4328 | continue; | |
4329 | } | |
4330 | ||
c2d11a7d | 4331 | buf[bc] = '\0'; |
c906108c SS |
4332 | puts_filtered ("Remote packet too long: "); |
4333 | puts_filtered (buf); | |
4334 | puts_filtered ("\n"); | |
4335 | ||
c2d11a7d | 4336 | return -1; |
c906108c SS |
4337 | } |
4338 | } | |
4339 | } | |
4340 | ||
4341 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4342 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4343 | this is used (in synchronous mode) to wait for a target that is is | |
4344 | executing user code to stop. */ | |
d9fcf2fb JM |
4345 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4346 | don't have to change all the calls to getpkt to deal with the | |
4347 | return value, because at the moment I don't know what the right | |
4348 | thing to do it for those. */ | |
c906108c | 4349 | void |
c2d11a7d JM |
4350 | getpkt (char *buf, |
4351 | long sizeof_buf, | |
4352 | int forever) | |
d9fcf2fb JM |
4353 | { |
4354 | int timed_out; | |
4355 | ||
4356 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4357 | } | |
4358 | ||
4359 | ||
4360 | /* Read a packet from the remote machine, with error checking, and | |
4361 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4362 | this is used (in synchronous mode) to wait for a target that is is | |
4363 | executing user code to stop. If FOREVER == 0, this function is | |
4364 | allowed to time out gracefully and return an indication of this to | |
4365 | the caller. */ | |
3172dc30 | 4366 | static int |
d9fcf2fb JM |
4367 | getpkt_sane (char *buf, |
4368 | long sizeof_buf, | |
4369 | int forever) | |
c906108c SS |
4370 | { |
4371 | int c; | |
4372 | int tries; | |
4373 | int timeout; | |
4374 | int val; | |
4375 | ||
c5aa993b | 4376 | strcpy (buf, "timeout"); |
c906108c SS |
4377 | |
4378 | if (forever) | |
4379 | { | |
c906108c | 4380 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4381 | } |
4382 | ||
4383 | else | |
4384 | timeout = remote_timeout; | |
4385 | ||
4386 | #define MAX_TRIES 3 | |
4387 | ||
4388 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4389 | { | |
4390 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4391 | continuously, but if it pauses, we'll get a zero from readchar |
4392 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4393 | |
4394 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4395 | After that, we expect characters to arrive at a brisk pace. They |
4396 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4397 | |
4398 | do | |
4399 | { | |
4400 | c = readchar (timeout); | |
4401 | ||
4402 | if (c == SERIAL_TIMEOUT) | |
4403 | { | |
2acceee2 | 4404 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4405 | { |
2acceee2 | 4406 | QUIT; |
c906108c SS |
4407 | target_mourn_inferior (); |
4408 | error ("Watchdog has expired. Target detached.\n"); | |
4409 | } | |
c906108c | 4410 | if (remote_debug) |
0f71a2f6 | 4411 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4412 | goto retry; |
4413 | } | |
4414 | } | |
4415 | while (c != '$'); | |
4416 | ||
4417 | /* We've found the start of a packet, now collect the data. */ | |
4418 | ||
c2d11a7d | 4419 | val = read_frame (buf, sizeof_buf); |
c906108c | 4420 | |
c2d11a7d | 4421 | if (val >= 0) |
c906108c SS |
4422 | { |
4423 | if (remote_debug) | |
43e526b9 JM |
4424 | { |
4425 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4426 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4427 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4428 | } | |
2cd58942 | 4429 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4430 | return 0; |
c906108c SS |
4431 | } |
4432 | ||
4433 | /* Try the whole thing again. */ | |
4434 | retry: | |
2cd58942 | 4435 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4436 | } |
4437 | ||
4438 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4439 | ||
4440 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4441 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4442 | return 1; |
c906108c SS |
4443 | } |
4444 | \f | |
4445 | static void | |
fba45db2 | 4446 | remote_kill (void) |
c906108c SS |
4447 | { |
4448 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4449 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4450 | if (kill_kludge) | |
4451 | { | |
4452 | kill_kludge = 0; | |
4453 | target_mourn_inferior (); | |
4454 | return; | |
4455 | } | |
4456 | ||
4457 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4458 | speaking terms with the remote system. */ | |
c5aa993b | 4459 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4460 | |
4461 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4462 | we do or not. For the existing stubs, kill is a noop. */ | |
4463 | target_mourn_inferior (); | |
4464 | } | |
4465 | ||
43ff13b4 JM |
4466 | /* Async version of remote_kill. */ |
4467 | static void | |
fba45db2 | 4468 | remote_async_kill (void) |
43ff13b4 JM |
4469 | { |
4470 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4471 | if (target_is_async_p ()) |
2cd58942 | 4472 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4473 | |
4474 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4475 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4476 | if (kill_kludge) | |
4477 | { | |
4478 | kill_kludge = 0; | |
4479 | target_mourn_inferior (); | |
4480 | return; | |
4481 | } | |
4482 | ||
4483 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4484 | speaking terms with the remote system. */ | |
c5aa993b | 4485 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4486 | |
4487 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4488 | we do or not. For the existing stubs, kill is a noop. */ | |
4489 | target_mourn_inferior (); | |
4490 | } | |
4491 | ||
c906108c | 4492 | static void |
fba45db2 | 4493 | remote_mourn (void) |
c906108c SS |
4494 | { |
4495 | remote_mourn_1 (&remote_ops); | |
4496 | } | |
4497 | ||
53a5351d | 4498 | static void |
fba45db2 | 4499 | remote_async_mourn (void) |
53a5351d JM |
4500 | { |
4501 | remote_mourn_1 (&remote_async_ops); | |
4502 | } | |
4503 | ||
c906108c | 4504 | static void |
fba45db2 | 4505 | extended_remote_mourn (void) |
c906108c SS |
4506 | { |
4507 | /* We do _not_ want to mourn the target like this; this will | |
4508 | remove the extended remote target from the target stack, | |
4509 | and the next time the user says "run" it'll fail. | |
4510 | ||
4511 | FIXME: What is the right thing to do here? */ | |
4512 | #if 0 | |
4513 | remote_mourn_1 (&extended_remote_ops); | |
4514 | #endif | |
4515 | } | |
4516 | ||
4517 | /* Worker function for remote_mourn. */ | |
4518 | static void | |
fba45db2 | 4519 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4520 | { |
4521 | unpush_target (target); | |
4522 | generic_mourn_inferior (); | |
4523 | } | |
4524 | ||
4525 | /* In the extended protocol we want to be able to do things like | |
4526 | "run" and have them basically work as expected. So we need | |
4527 | a special create_inferior function. | |
4528 | ||
4529 | FIXME: One day add support for changing the exec file | |
4530 | we're debugging, arguments and an environment. */ | |
4531 | ||
4532 | static void | |
fba45db2 | 4533 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4534 | { |
4535 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4536 | the remote server. */ | |
4537 | remove_breakpoints (); | |
4538 | ||
4539 | /* Now restart the remote server. */ | |
4540 | extended_remote_restart (); | |
4541 | ||
4542 | /* Now put the breakpoints back in. This way we're safe if the | |
4543 | restart function works via a unix fork on the remote side. */ | |
4544 | insert_breakpoints (); | |
4545 | ||
4546 | /* Clean up from the last time we were running. */ | |
4547 | clear_proceed_status (); | |
4548 | ||
4549 | /* Let the remote process run. */ | |
4550 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4551 | } | |
4552 | ||
43ff13b4 JM |
4553 | /* Async version of extended_remote_create_inferior. */ |
4554 | static void | |
fba45db2 | 4555 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4556 | { |
4557 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4558 | the remote server. */ | |
4559 | remove_breakpoints (); | |
4560 | ||
4561 | /* If running asynchronously, register the target file descriptor | |
4562 | with the event loop. */ | |
2acceee2 JM |
4563 | if (event_loop_p && target_can_async_p ()) |
4564 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4565 | |
4566 | /* Now restart the remote server. */ | |
4567 | extended_remote_restart (); | |
4568 | ||
4569 | /* Now put the breakpoints back in. This way we're safe if the | |
4570 | restart function works via a unix fork on the remote side. */ | |
4571 | insert_breakpoints (); | |
4572 | ||
4573 | /* Clean up from the last time we were running. */ | |
4574 | clear_proceed_status (); | |
4575 | ||
4576 | /* Let the remote process run. */ | |
4577 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4578 | } | |
c906108c | 4579 | \f |
c5aa993b | 4580 | |
c906108c SS |
4581 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4582 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4583 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4584 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4585 | the standard routines that are in mem-break.c. */ | |
4586 | ||
4587 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4588 | the choice of breakpoint instruction affects target program design and | |
4589 | vice versa, and by making it user-tweakable, the special code here | |
4590 | goes away and we need fewer special GDB configurations. */ | |
4591 | ||
4592 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4593 | #define REMOTE_BREAKPOINT | |
4594 | #endif | |
4595 | ||
4596 | #ifdef REMOTE_BREAKPOINT | |
4597 | ||
4598 | /* If the target isn't bi-endian, just pretend it is. */ | |
4599 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4600 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4601 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4602 | #endif | |
4603 | ||
4604 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4605 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4606 | ||
4607 | #endif /* REMOTE_BREAKPOINT */ | |
4608 | ||
4609 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4610 | support. We read the contents of the target location and stash it, | |
4611 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4612 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4613 | memory allocated for saving the target contents. It is guaranteed | |
4614 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4615 | is accomplished via BREAKPOINT_MAX). */ | |
4616 | ||
4617 | static int | |
fba45db2 | 4618 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4619 | { |
d01949b6 | 4620 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4621 | #ifdef REMOTE_BREAKPOINT |
4622 | int val; | |
96baa820 JM |
4623 | #endif |
4624 | int bp_size; | |
4625 | ||
d471ea57 AC |
4626 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4627 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4628 | fails, and the user has explicitly requested the Z support then | |
4629 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4630 | |
d471ea57 | 4631 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4632 | { |
d01949b6 | 4633 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4634 | char *p = buf; |
96baa820 | 4635 | |
0caabb7e | 4636 | addr = remote_address_masked (addr); |
96baa820 JM |
4637 | *(p++) = 'Z'; |
4638 | *(p++) = '0'; | |
4639 | *(p++) = ','; | |
0caabb7e AC |
4640 | p += hexnumstr (p, (ULONGEST) addr); |
4641 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4642 | sprintf (p, ",%d", bp_size); |
4643 | ||
4644 | putpkt (buf); | |
d01949b6 | 4645 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4646 | |
d471ea57 | 4647 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4648 | { |
d471ea57 AC |
4649 | case PACKET_ERROR: |
4650 | return -1; | |
4651 | case PACKET_OK: | |
4652 | return 0; | |
4653 | case PACKET_UNKNOWN: | |
4654 | break; | |
96baa820 JM |
4655 | } |
4656 | } | |
c906108c | 4657 | |
96baa820 | 4658 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4659 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4660 | ||
4661 | if (val == 0) | |
4662 | { | |
4663 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
4664 | val = target_write_memory (addr, (char *) big_break_insn, | |
4665 | sizeof big_break_insn); | |
4666 | else | |
4667 | val = target_write_memory (addr, (char *) little_break_insn, | |
4668 | sizeof little_break_insn); | |
4669 | } | |
4670 | ||
4671 | return val; | |
4672 | #else | |
4673 | return memory_insert_breakpoint (addr, contents_cache); | |
4674 | #endif /* REMOTE_BREAKPOINT */ | |
4675 | } | |
4676 | ||
4677 | static int | |
fba45db2 | 4678 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4679 | { |
d01949b6 | 4680 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4681 | int bp_size; |
4682 | ||
d471ea57 | 4683 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4684 | { |
d01949b6 | 4685 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4686 | char *p = buf; |
96baa820 JM |
4687 | |
4688 | *(p++) = 'z'; | |
4689 | *(p++) = '0'; | |
4690 | *(p++) = ','; | |
4691 | ||
0caabb7e AC |
4692 | addr = remote_address_masked (addr); |
4693 | p += hexnumstr (p, (ULONGEST) addr); | |
4694 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4695 | sprintf (p, ",%d", bp_size); |
4696 | ||
4697 | putpkt (buf); | |
d01949b6 | 4698 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4699 | |
4700 | return (buf[0] == 'E'); | |
4701 | } | |
4702 | ||
c906108c SS |
4703 | #ifdef REMOTE_BREAKPOINT |
4704 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4705 | #else | |
4706 | return memory_remove_breakpoint (addr, contents_cache); | |
4707 | #endif /* REMOTE_BREAKPOINT */ | |
4708 | } | |
4709 | ||
d471ea57 AC |
4710 | static int |
4711 | watchpoint_to_Z_packet (int type) | |
4712 | { | |
4713 | switch (type) | |
4714 | { | |
4715 | case hw_write: | |
4716 | return 2; | |
4717 | break; | |
4718 | case hw_read: | |
4719 | return 3; | |
4720 | break; | |
4721 | case hw_access: | |
4722 | return 4; | |
4723 | break; | |
4724 | default: | |
8e65ff28 AC |
4725 | internal_error (__FILE__, __LINE__, |
4726 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4727 | } |
4728 | } | |
4729 | ||
4730 | /* FIXME: This function should be static and a member of the remote | |
4731 | target vector. */ | |
4732 | ||
96baa820 | 4733 | int |
fba45db2 | 4734 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4735 | { |
d01949b6 AC |
4736 | struct remote_state *rs = get_remote_state (); |
4737 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4738 | char *p; |
d471ea57 | 4739 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4740 | |
d471ea57 AC |
4741 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4742 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4743 | remote_protocol_Z[packet].name, | |
4744 | remote_protocol_Z[packet].title); | |
96baa820 | 4745 | |
d471ea57 | 4746 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4747 | p = strchr (buf, '\0'); |
4748 | addr = remote_address_masked (addr); | |
4749 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4750 | sprintf (p, ",%x", len); |
96baa820 JM |
4751 | |
4752 | putpkt (buf); | |
d01949b6 | 4753 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4754 | |
d471ea57 AC |
4755 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4756 | { | |
4757 | case PACKET_ERROR: | |
4758 | case PACKET_UNKNOWN: | |
4759 | return -1; | |
4760 | case PACKET_OK: | |
4761 | return 0; | |
4762 | } | |
8e65ff28 AC |
4763 | internal_error (__FILE__, __LINE__, |
4764 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4765 | } |
4766 | ||
d471ea57 AC |
4767 | /* FIXME: This function should be static and a member of the remote |
4768 | target vector. */ | |
4769 | ||
96baa820 | 4770 | int |
fba45db2 | 4771 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4772 | { |
d01949b6 AC |
4773 | struct remote_state *rs = get_remote_state (); |
4774 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4775 | char *p; |
d471ea57 AC |
4776 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4777 | ||
4778 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4779 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4780 | remote_protocol_Z[packet].name, | |
4781 | remote_protocol_Z[packet].title); | |
96baa820 | 4782 | |
d471ea57 | 4783 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4784 | p = strchr (buf, '\0'); |
4785 | addr = remote_address_masked (addr); | |
4786 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4787 | sprintf (p, ",%x", len); |
96baa820 | 4788 | putpkt (buf); |
d01949b6 | 4789 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4790 | |
d471ea57 AC |
4791 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4792 | { | |
4793 | case PACKET_ERROR: | |
4794 | case PACKET_UNKNOWN: | |
4795 | return -1; | |
4796 | case PACKET_OK: | |
4797 | return 0; | |
4798 | } | |
8e65ff28 AC |
4799 | internal_error (__FILE__, __LINE__, |
4800 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4801 | } |
4802 | ||
d471ea57 AC |
4803 | /* FIXME: This function should be static and a member of the remote |
4804 | target vector. */ | |
4805 | ||
96baa820 | 4806 | int |
fba45db2 | 4807 | remote_insert_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4808 | { |
d01949b6 AC |
4809 | struct remote_state *rs = get_remote_state (); |
4810 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4811 | char *p = buf; |
96baa820 | 4812 | |
d471ea57 AC |
4813 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4814 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4815 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4816 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4817 | ||
96baa820 JM |
4818 | *(p++) = 'Z'; |
4819 | *(p++) = '1'; | |
4820 | *(p++) = ','; | |
4821 | ||
4822 | addr = remote_address_masked (addr); | |
4823 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4824 | sprintf (p, ",%x", len); |
96baa820 JM |
4825 | |
4826 | putpkt (buf); | |
d01949b6 | 4827 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4828 | |
d471ea57 AC |
4829 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4830 | { | |
4831 | case PACKET_ERROR: | |
4832 | case PACKET_UNKNOWN: | |
4833 | return -1; | |
4834 | case PACKET_OK: | |
4835 | return 0; | |
4836 | } | |
8e65ff28 AC |
4837 | internal_error (__FILE__, __LINE__, |
4838 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4839 | } |
4840 | ||
d471ea57 AC |
4841 | /* FIXME: This function should be static and a member of the remote |
4842 | target vector. */ | |
4843 | ||
96baa820 | 4844 | int |
fba45db2 | 4845 | remote_remove_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4846 | { |
d01949b6 AC |
4847 | struct remote_state *rs = get_remote_state (); |
4848 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4849 | char *p = buf; |
96baa820 | 4850 | |
d471ea57 AC |
4851 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4852 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4853 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4854 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4855 | ||
96baa820 JM |
4856 | *(p++) = 'z'; |
4857 | *(p++) = '1'; | |
4858 | *(p++) = ','; | |
4859 | ||
4860 | addr = remote_address_masked (addr); | |
4861 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4862 | sprintf (p, ",%x", len); |
96baa820 JM |
4863 | |
4864 | putpkt(buf); | |
d01949b6 | 4865 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4866 | |
d471ea57 AC |
4867 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4868 | { | |
4869 | case PACKET_ERROR: | |
4870 | case PACKET_UNKNOWN: | |
4871 | return -1; | |
4872 | case PACKET_OK: | |
4873 | return 0; | |
4874 | } | |
8e65ff28 AC |
4875 | internal_error (__FILE__, __LINE__, |
4876 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 | 4877 | } |
96baa820 | 4878 | |
c906108c SS |
4879 | /* Some targets are only capable of doing downloads, and afterwards |
4880 | they switch to the remote serial protocol. This function provides | |
4881 | a clean way to get from the download target to the remote target. | |
4882 | It's basically just a wrapper so that we don't have to expose any | |
4883 | of the internal workings of remote.c. | |
4884 | ||
4885 | Prior to calling this routine, you should shutdown the current | |
4886 | target code, else you will get the "A program is being debugged | |
4887 | already..." message. Usually a call to pop_target() suffices. */ | |
4888 | ||
4889 | void | |
fba45db2 | 4890 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4891 | { |
4892 | printf_filtered ("Switching to remote protocol\n"); | |
4893 | remote_open (name, from_tty); | |
4894 | } | |
4895 | ||
4896 | /* Other targets want to use the entire remote serial module but with | |
4897 | certain remote_ops overridden. */ | |
4898 | ||
4899 | void | |
fba45db2 KB |
4900 | open_remote_target (char *name, int from_tty, struct target_ops *target, |
4901 | int extended_p) | |
c906108c SS |
4902 | { |
4903 | printf_filtered ("Selecting the %sremote protocol\n", | |
4904 | (extended_p ? "extended-" : "")); | |
4905 | remote_open_1 (name, from_tty, target, extended_p); | |
4906 | } | |
4907 | ||
4908 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4909 | ||
c5aa993b JM |
4910 | static unsigned long crc32_table[256] = |
4911 | {0, 0}; | |
c906108c SS |
4912 | |
4913 | static unsigned long | |
fba45db2 | 4914 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4915 | { |
c5aa993b | 4916 | if (!crc32_table[1]) |
c906108c SS |
4917 | { |
4918 | /* Initialize the CRC table and the decoding table. */ | |
4919 | int i, j; | |
4920 | unsigned int c; | |
4921 | ||
4922 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4923 | { |
4924 | for (c = i << 24, j = 8; j > 0; --j) | |
4925 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4926 | crc32_table[i] = c; | |
4927 | } | |
c906108c SS |
4928 | } |
4929 | ||
4930 | while (len--) | |
4931 | { | |
4932 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4933 | buf++; | |
4934 | } | |
4935 | return crc; | |
4936 | } | |
4937 | ||
4938 | /* compare-sections command | |
4939 | ||
4940 | With no arguments, compares each loadable section in the exec bfd | |
4941 | with the same memory range on the target, and reports mismatches. | |
4942 | Useful for verifying the image on the target against the exec file. | |
4943 | Depends on the target understanding the new "qCRC:" request. */ | |
4944 | ||
e514a9d6 JM |
4945 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4946 | target method (target verify memory) and generic version of the | |
4947 | actual command. This will allow other high-level code (especially | |
4948 | generic_load()) to make use of this target functionality. */ | |
4949 | ||
c906108c | 4950 | static void |
fba45db2 | 4951 | compare_sections_command (char *args, int from_tty) |
c906108c | 4952 | { |
d01949b6 | 4953 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4954 | asection *s; |
4955 | unsigned long host_crc, target_crc; | |
4956 | extern bfd *exec_bfd; | |
4957 | struct cleanup *old_chain; | |
085dd6e6 JM |
4958 | char *tmp; |
4959 | char *sectdata; | |
ce359b09 | 4960 | const char *sectname; |
d01949b6 | 4961 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4962 | bfd_size_type size; |
4963 | bfd_vma lma; | |
4964 | int matched = 0; | |
4965 | int mismatched = 0; | |
4966 | ||
4967 | if (!exec_bfd) | |
4968 | error ("command cannot be used without an exec file"); | |
4969 | if (!current_target.to_shortname || | |
4970 | strcmp (current_target.to_shortname, "remote") != 0) | |
4971 | error ("command can only be used with remote target"); | |
4972 | ||
c5aa993b | 4973 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4974 | { |
4975 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4976 | continue; /* skip non-loadable section */ |
c906108c SS |
4977 | |
4978 | size = bfd_get_section_size_before_reloc (s); | |
4979 | if (size == 0) | |
c5aa993b | 4980 | continue; /* skip zero-length section */ |
c906108c | 4981 | |
ce359b09 | 4982 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4983 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4984 | continue; /* not the section selected by user */ |
c906108c | 4985 | |
c5aa993b | 4986 | matched = 1; /* do this section */ |
c906108c SS |
4987 | lma = s->lma; |
4988 | /* FIXME: assumes lma can fit into long */ | |
4989 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4990 | putpkt (buf); | |
4991 | ||
4992 | /* be clever; compute the host_crc before waiting for target reply */ | |
4993 | sectdata = xmalloc (size); | |
b8c9b27d | 4994 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4995 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4996 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4997 | ||
d01949b6 | 4998 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
4999 | if (buf[0] == 'E') |
5000 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
5001 | sectname, lma, lma + size); | |
5002 | if (buf[0] != 'C') | |
5003 | error ("remote target does not support this operation"); | |
5004 | ||
5005 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
5006 | target_crc = target_crc * 16 + fromhex (*tmp); | |
5007 | ||
d4f3574e SS |
5008 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5009 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5010 | if (host_crc == target_crc) |
5011 | printf_filtered ("matched.\n"); | |
5012 | else | |
c5aa993b JM |
5013 | { |
5014 | printf_filtered ("MIS-MATCHED!\n"); | |
5015 | mismatched++; | |
5016 | } | |
c906108c SS |
5017 | |
5018 | do_cleanups (old_chain); | |
5019 | } | |
5020 | if (mismatched > 0) | |
5021 | warning ("One or more sections of the remote executable does not match\n\ | |
5022 | the loaded file\n"); | |
5023 | if (args && !matched) | |
5024 | printf_filtered ("No loaded section named '%s'.\n", args); | |
5025 | } | |
5026 | ||
5027 | static int | |
fba45db2 | 5028 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c | 5029 | { |
d01949b6 | 5030 | struct remote_state *rs = get_remote_state (); |
c906108c | 5031 | int i; |
d01949b6 | 5032 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 5033 | char *p2 = &buf2[0]; |
c906108c | 5034 | |
c5aa993b | 5035 | if (!bufsiz) |
c906108c SS |
5036 | error ("null pointer to remote bufer size specified"); |
5037 | ||
d01949b6 | 5038 | /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let |
c906108c SS |
5039 | the caller know and return what the minimum size is */ |
5040 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
d01949b6 | 5041 | if (*bufsiz < (rs->remote_packet_size)) |
c906108c | 5042 | { |
d01949b6 | 5043 | *bufsiz = (rs->remote_packet_size); |
c906108c SS |
5044 | return -1; |
5045 | } | |
5046 | ||
5047 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 5048 | if (!remote_desc) |
c906108c SS |
5049 | error ("remote query is only available after target open"); |
5050 | ||
5051 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 5052 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
5053 | error ("invalid remote query type"); |
5054 | ||
c5aa993b | 5055 | if (!buf) |
c906108c SS |
5056 | error ("null remote query specified"); |
5057 | ||
c5aa993b | 5058 | if (!outbuf) |
c906108c SS |
5059 | error ("remote query requires a buffer to receive data"); |
5060 | ||
5061 | outbuf[0] = '\0'; | |
5062 | ||
5063 | *p2++ = 'q'; | |
5064 | *p2++ = query_type; | |
5065 | ||
5066 | /* we used one buffer char for the remote protocol q command and another | |
5067 | for the query type. As the remote protocol encapsulation uses 4 chars | |
5068 | plus one extra in case we are debugging (remote_debug), | |
5069 | we have PBUFZIZ - 7 left to pack the query string */ | |
5070 | i = 0; | |
d01949b6 | 5071 | while (buf[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c SS |
5072 | { |
5073 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
5074 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
5075 | error ("illegal characters in query string"); | |
c906108c SS |
5076 | |
5077 | *p2++ = buf[i]; | |
5078 | i++; | |
5079 | } | |
5080 | *p2 = buf[i]; | |
5081 | ||
c5aa993b | 5082 | if (buf[i]) |
c906108c SS |
5083 | error ("query larger than available buffer"); |
5084 | ||
5085 | i = putpkt (buf2); | |
c5aa993b JM |
5086 | if (i < 0) |
5087 | return i; | |
c906108c | 5088 | |
c2d11a7d | 5089 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
5090 | |
5091 | return 0; | |
5092 | } | |
5093 | ||
96baa820 JM |
5094 | static void |
5095 | remote_rcmd (char *command, | |
d9fcf2fb | 5096 | struct ui_file *outbuf) |
96baa820 | 5097 | { |
d01949b6 | 5098 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5099 | int i; |
d01949b6 | 5100 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5101 | char *p = buf; |
5102 | ||
5103 | if (!remote_desc) | |
5104 | error ("remote rcmd is only available after target open"); | |
5105 | ||
7be570e7 JM |
5106 | /* Send a NULL command across as an empty command */ |
5107 | if (command == NULL) | |
5108 | command = ""; | |
5109 | ||
96baa820 JM |
5110 | /* The query prefix */ |
5111 | strcpy (buf, "qRcmd,"); | |
5112 | p = strchr (buf, '\0'); | |
5113 | ||
d01949b6 | 5114 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5115 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5116 | ||
5117 | /* Encode the actual command */ | |
30559e10 | 5118 | bin2hex (command, p, 0); |
96baa820 JM |
5119 | |
5120 | if (putpkt (buf) < 0) | |
5121 | error ("Communication problem with target\n"); | |
5122 | ||
5123 | /* get/display the response */ | |
5124 | while (1) | |
5125 | { | |
5126 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
5127 | buf[0] = '\0'; | |
d01949b6 | 5128 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5129 | if (buf[0] == '\0') |
5130 | error ("Target does not support this command\n"); | |
5131 | if (buf[0] == 'O' && buf[1] != 'K') | |
5132 | { | |
5133 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
5134 | continue; | |
5135 | } | |
5136 | if (strcmp (buf, "OK") == 0) | |
5137 | break; | |
7be570e7 JM |
5138 | if (strlen (buf) == 3 && buf[0] == 'E' |
5139 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5140 | { | |
5141 | error ("Protocol error with Rcmd"); | |
5142 | } | |
96baa820 JM |
5143 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5144 | { | |
5145 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5146 | fputc_unfiltered (c, outbuf); | |
5147 | } | |
5148 | break; | |
5149 | } | |
5150 | } | |
5151 | ||
c906108c | 5152 | static void |
fba45db2 | 5153 | packet_command (char *args, int from_tty) |
c906108c | 5154 | { |
d01949b6 AC |
5155 | struct remote_state *rs = get_remote_state (); |
5156 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5157 | |
c5aa993b | 5158 | if (!remote_desc) |
c906108c SS |
5159 | error ("command can only be used with remote target"); |
5160 | ||
c5aa993b | 5161 | if (!args) |
c906108c SS |
5162 | error ("remote-packet command requires packet text as argument"); |
5163 | ||
5164 | puts_filtered ("sending: "); | |
5165 | print_packet (args); | |
5166 | puts_filtered ("\n"); | |
5167 | putpkt (args); | |
5168 | ||
d01949b6 | 5169 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5170 | puts_filtered ("received: "); |
5171 | print_packet (buf); | |
5172 | puts_filtered ("\n"); | |
5173 | } | |
5174 | ||
5175 | #if 0 | |
5176 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
5177 | ||
a14ed312 | 5178 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5179 | |
a14ed312 | 5180 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5181 | |
a14ed312 | 5182 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5183 | |
a14ed312 | 5184 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5185 | |
a14ed312 | 5186 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 5187 | |
a14ed312 | 5188 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5189 | |
a14ed312 | 5190 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5191 | |
a14ed312 | 5192 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5193 | |
a14ed312 | 5194 | static void init_remote_threadtests (void); |
c906108c | 5195 | |
c5aa993b | 5196 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5197 | |
5198 | static void | |
fba45db2 | 5199 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5200 | { |
5201 | int sample_thread = SAMPLE_THREAD; | |
5202 | ||
5203 | printf_filtered ("Remote threadset test\n"); | |
5204 | set_thread (sample_thread, 1); | |
5205 | } | |
5206 | ||
5207 | ||
5208 | static void | |
fba45db2 | 5209 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5210 | { |
5211 | int sample_thread = SAMPLE_THREAD; | |
5212 | ||
39f77062 | 5213 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5214 | printf_filtered ("PASS: Thread alive test\n"); |
5215 | else | |
5216 | printf_filtered ("FAIL: Thread alive test\n"); | |
5217 | } | |
5218 | ||
a14ed312 | 5219 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5220 | |
5221 | void | |
fba45db2 | 5222 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5223 | { |
5224 | char hexid[20]; | |
5225 | ||
5226 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5227 | hexid[16] = 0; | |
5228 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5229 | } | |
5230 | ||
5231 | static void | |
fba45db2 | 5232 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5233 | { |
5234 | int startflag = 1; | |
5235 | threadref nextthread; | |
5236 | int done, result_count; | |
5237 | threadref threadlist[3]; | |
5238 | ||
5239 | printf_filtered ("Remote Threadlist test\n"); | |
5240 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5241 | &result_count, &threadlist[0])) | |
5242 | printf_filtered ("FAIL: threadlist test\n"); | |
5243 | else | |
5244 | { | |
5245 | threadref *scan = threadlist; | |
5246 | threadref *limit = scan + result_count; | |
5247 | ||
5248 | while (scan < limit) | |
5249 | output_threadid (" thread ", scan++); | |
5250 | } | |
5251 | } | |
5252 | ||
5253 | void | |
fba45db2 | 5254 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5255 | { |
5256 | output_threadid ("Threadid: ", &info->threadid); | |
5257 | printf_filtered ("Name: %s\n ", info->shortname); | |
5258 | printf_filtered ("State: %s\n", info->display); | |
5259 | printf_filtered ("other: %s\n\n", info->more_display); | |
5260 | } | |
5261 | ||
5262 | int | |
fba45db2 | 5263 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5264 | { |
5265 | int result; | |
5266 | int set; | |
5267 | struct gdb_ext_thread_info threadinfo; | |
5268 | ||
5269 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5270 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5271 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5272 | display_thread_info (&threadinfo); | |
5273 | return result; | |
5274 | } | |
5275 | ||
5276 | static void | |
fba45db2 | 5277 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5278 | { |
5279 | int athread = SAMPLE_THREAD; | |
5280 | threadref thread; | |
5281 | int set; | |
5282 | ||
5283 | int_to_threadref (&thread, athread); | |
5284 | printf_filtered ("Remote Threadinfo test\n"); | |
5285 | if (!get_and_display_threadinfo (&thread)) | |
5286 | printf_filtered ("FAIL cannot get thread info\n"); | |
5287 | } | |
5288 | ||
5289 | static int | |
fba45db2 | 5290 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5291 | { |
5292 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5293 | return get_and_display_threadinfo (ref); | |
5294 | } | |
5295 | ||
5296 | static void | |
fba45db2 | 5297 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5298 | { |
5299 | printf_filtered ("Remote Threadlist update test\n"); | |
5300 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5301 | } | |
5302 | ||
5303 | static void | |
5304 | init_remote_threadtests (void) | |
5305 | { | |
5306 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5307 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5308 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5309 | "Fetch and display info about one thread"); | |
5310 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5311 | "Test setting to a different thread"); | |
5312 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5313 | "Iterate through updating all remote thread info"); | |
5314 | add_com ("talive", class_obscure, threadalive_test, | |
5315 | " Remote thread alive test "); | |
5316 | } | |
5317 | ||
5318 | #endif /* 0 */ | |
5319 | ||
f3fb8c85 MS |
5320 | /* Convert a thread ID to a string. Returns the string in a static |
5321 | buffer. */ | |
5322 | ||
5323 | static char * | |
39f77062 | 5324 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5325 | { |
5326 | static char buf[30]; | |
5327 | ||
39f77062 | 5328 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5329 | return buf; |
5330 | } | |
5331 | ||
c906108c | 5332 | static void |
fba45db2 | 5333 | init_remote_ops (void) |
c906108c | 5334 | { |
c5aa993b | 5335 | remote_ops.to_shortname = "remote"; |
c906108c | 5336 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5337 | remote_ops.to_doc = |
c906108c | 5338 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5339 | Specify the serial device it is connected to\n\ |
5340 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5341 | remote_ops.to_open = remote_open; |
5342 | remote_ops.to_close = remote_close; | |
c906108c | 5343 | remote_ops.to_detach = remote_detach; |
c5aa993b | 5344 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5345 | remote_ops.to_wait = remote_wait; |
5346 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5347 | remote_ops.to_store_registers = remote_store_registers; | |
5348 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5349 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5350 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5351 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5352 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5353 | remote_ops.to_kill = remote_kill; |
5354 | remote_ops.to_load = generic_load; | |
c906108c SS |
5355 | remote_ops.to_mourn_inferior = remote_mourn; |
5356 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5357 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5358 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5359 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c SS |
5360 | remote_ops.to_stop = remote_stop; |
5361 | remote_ops.to_query = remote_query; | |
96baa820 | 5362 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5363 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5364 | remote_ops.to_has_all_memory = 1; |
5365 | remote_ops.to_has_memory = 1; | |
5366 | remote_ops.to_has_stack = 1; | |
5367 | remote_ops.to_has_registers = 1; | |
5368 | remote_ops.to_has_execution = 1; | |
5369 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5370 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5371 | } |
5372 | ||
5373 | /* Set up the extended remote vector by making a copy of the standard | |
5374 | remote vector and adding to it. */ | |
5375 | ||
5376 | static void | |
fba45db2 | 5377 | init_extended_remote_ops (void) |
c906108c SS |
5378 | { |
5379 | extended_remote_ops = remote_ops; | |
5380 | ||
0f71a2f6 | 5381 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5382 | extended_remote_ops.to_longname = |
c906108c | 5383 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5384 | extended_remote_ops.to_doc = |
c906108c SS |
5385 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5386 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5387 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5388 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5389 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5390 | } |
5391 | ||
5392 | /* | |
5393 | * Command: info remote-process | |
5394 | * | |
5395 | * This implements Cisco's version of the "info proc" command. | |
5396 | * | |
5397 | * This query allows the target stub to return an arbitrary string | |
5398 | * (or strings) giving arbitrary information about the target process. | |
5399 | * This is optional; the target stub isn't required to implement it. | |
5400 | * | |
5401 | * Syntax: qfProcessInfo request first string | |
5402 | * qsProcessInfo request subsequent string | |
5403 | * reply: 'O'<hex-encoded-string> | |
5404 | * 'l' last reply (empty) | |
5405 | */ | |
5406 | ||
5407 | static void | |
c2d11a7d | 5408 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5409 | { |
d01949b6 AC |
5410 | struct remote_state *rs = get_remote_state (); |
5411 | char *buf = alloca (rs->remote_packet_size); | |
0f71a2f6 JM |
5412 | |
5413 | if (remote_desc == 0) | |
5414 | error ("Command can only be used when connected to the remote target."); | |
5415 | ||
5416 | putpkt ("qfProcessInfo"); | |
d01949b6 | 5417 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 | 5418 | if (buf[0] == 0) |
c5aa993b | 5419 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5420 | |
5421 | if (buf[0] == 'E') | |
5422 | error ("info proc: target error."); | |
5423 | ||
c5aa993b | 5424 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5425 | { |
5426 | remote_console_output (&buf[1]); | |
5427 | putpkt ("qsProcessInfo"); | |
d01949b6 | 5428 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 JM |
5429 | } |
5430 | } | |
5431 | ||
5432 | /* | |
5433 | * Target Cisco | |
5434 | */ | |
5435 | ||
5436 | static void | |
c2d11a7d | 5437 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 JM |
5438 | { |
5439 | if (name == 0) | |
22e04375 AC |
5440 | error ("To open a remote debug connection, you need to specify what \n" |
5441 | "device is attached to the remote system (e.g. host:port)."); | |
0f71a2f6 | 5442 | |
6426a772 JM |
5443 | /* See FIXME above */ |
5444 | wait_forever_enabled_p = 1; | |
5445 | ||
0f71a2f6 JM |
5446 | target_preopen (from_tty); |
5447 | ||
5448 | unpush_target (&remote_cisco_ops); | |
5449 | ||
2cd58942 | 5450 | remote_desc = serial_open (name); |
0f71a2f6 JM |
5451 | if (!remote_desc) |
5452 | perror_with_name (name); | |
5453 | ||
5454 | /* | |
5455 | * If a baud rate was specified on the gdb command line it will | |
5456 | * be greater than the initial value of -1. If it is, use it otherwise | |
5457 | * default to 9600 | |
5458 | */ | |
5459 | ||
5460 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
2cd58942 | 5461 | if (serial_setbaudrate (remote_desc, baud_rate)) |
0f71a2f6 | 5462 | { |
2cd58942 | 5463 | serial_close (remote_desc); |
0f71a2f6 JM |
5464 | perror_with_name (name); |
5465 | } | |
5466 | ||
2cd58942 | 5467 | serial_raw (remote_desc); |
0f71a2f6 JM |
5468 | |
5469 | /* If there is something sitting in the buffer we might take it as a | |
5470 | response to a command, which would be bad. */ | |
2cd58942 | 5471 | serial_flush_input (remote_desc); |
0f71a2f6 JM |
5472 | |
5473 | if (from_tty) | |
5474 | { | |
5475 | puts_filtered ("Remote debugging using "); | |
5476 | puts_filtered (name); | |
5477 | puts_filtered ("\n"); | |
5478 | } | |
5479 | ||
5480 | remote_cisco_mode = 1; | |
5481 | ||
5482 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5483 | ||
d471ea57 | 5484 | init_all_packet_configs (); |
0f71a2f6 | 5485 | |
c5aa993b | 5486 | general_thread = -2; |
0f71a2f6 JM |
5487 | continue_thread = -2; |
5488 | ||
9d1f7ab2 MS |
5489 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5490 | use_threadinfo_query = 1; | |
5491 | use_threadextra_query = 1; | |
5492 | ||
0f71a2f6 JM |
5493 | /* Without this, some commands which require an active target (such |
5494 | as kill) won't work. This variable serves (at least) double duty | |
5495 | as both the pid of the target process (if it has such), and as a | |
5496 | flag indicating that a target is active. These functions should | |
5497 | be split out into seperate variables, especially since GDB will | |
5498 | someday have a notion of debugging several processes. */ | |
39f77062 | 5499 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
0f71a2f6 JM |
5500 | |
5501 | /* Start the remote connection; if error (0), discard this target. */ | |
5502 | ||
c5aa993b JM |
5503 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
5504 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
5505 | RETURN_MASK_ALL)) |
5506 | { | |
5507 | pop_target (); | |
5508 | return; | |
5509 | } | |
5510 | } | |
5511 | ||
5512 | static void | |
c2d11a7d | 5513 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5514 | { |
5515 | remote_cisco_mode = 0; | |
5516 | remote_close (quitting); | |
5517 | } | |
5518 | ||
c5aa993b | 5519 | static void |
8ab86381 | 5520 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5521 | { |
5522 | remote_mourn_1 (&remote_cisco_ops); | |
5523 | } | |
5524 | ||
c5aa993b JM |
5525 | enum |
5526 | { | |
5527 | READ_MORE, | |
5528 | FATAL_ERROR, | |
5529 | ENTER_DEBUG, | |
0f71a2f6 | 5530 | DISCONNECT_TELNET |
c5aa993b JM |
5531 | } |
5532 | minitelnet_return; | |
0f71a2f6 | 5533 | |
1ff9c3d6 AC |
5534 | /* Shared between readsocket() and readtty(). The size is arbitrary, |
5535 | however all targets are known to support a 400 character packet. */ | |
5536 | static char tty_input[400]; | |
0f71a2f6 JM |
5537 | |
5538 | static int escape_count; | |
5539 | static int echo_check; | |
5540 | extern int quit_flag; | |
5541 | ||
5542 | static int | |
c2d11a7d | 5543 | readsocket (void) |
0f71a2f6 JM |
5544 | { |
5545 | int data; | |
5546 | ||
5547 | /* Loop until the socket doesn't have any more data */ | |
5548 | ||
c5aa993b | 5549 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5550 | { |
5551 | /* Check for the escape sequence */ | |
c5aa993b | 5552 | if (data == '|') |
0f71a2f6 JM |
5553 | { |
5554 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5555 | if (++escape_count == 4) |
0f71a2f6 JM |
5556 | { |
5557 | return ENTER_DEBUG; | |
5558 | } | |
c5aa993b JM |
5559 | else |
5560 | { /* This is a '|', but not the fourth in a row. | |
5561 | Continue without echoing it. If it isn't actually | |
5562 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5563 | continue; |
5564 | } | |
5565 | } | |
c5aa993b JM |
5566 | else |
5567 | /* Not a '|' */ | |
5568 | { | |
0f71a2f6 JM |
5569 | /* Ensure any pending '|'s are flushed. */ |
5570 | ||
c5aa993b JM |
5571 | for (; escape_count > 0; escape_count--) |
5572 | putchar ('|'); | |
0f71a2f6 | 5573 | } |
0f71a2f6 | 5574 | |
c5aa993b JM |
5575 | if (data == '\r') /* If this is a return character, */ |
5576 | continue; /* - just supress it. */ | |
5577 | ||
5578 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5579 | { |
5580 | if (tty_input[echo_check] == data) | |
5581 | { | |
1ff9c3d6 | 5582 | gdb_assert (echo_check <= sizeof (tty_input)); |
c5aa993b JM |
5583 | echo_check++; /* Character matched user input: */ |
5584 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5585 | } |
c5aa993b JM |
5586 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5587 | { /* End of the line (and of echo checking). */ | |
5588 | echo_check = -1; /* No more echo supression */ | |
5589 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5590 | } |
5591 | else | |
c5aa993b JM |
5592 | { /* Failed check for echo of user input. |
5593 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5594 | int j; |
5595 | ||
c5aa993b | 5596 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5597 | putchar (tty_input[j]); |
5598 | echo_check = -1; | |
5599 | } | |
5600 | } | |
c5aa993b | 5601 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5602 | } |
5603 | ||
c5aa993b JM |
5604 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5605 | return READ_MORE; /* Try to read some more */ | |
5606 | else | |
5607 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5608 | } |
5609 | ||
5610 | static int | |
c2d11a7d | 5611 | readtty (void) |
0f71a2f6 | 5612 | { |
0f71a2f6 JM |
5613 | int tty_bytecount; |
5614 | ||
5615 | /* First, read a buffer full from the terminal */ | |
5616 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5617 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5618 | { |
5619 | perror ("readtty: read failed"); | |
5620 | return FATAL_ERROR; | |
5621 | } | |
5622 | ||
5623 | /* Remove a quoted newline. */ | |
5624 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5625 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5626 | { | |
c5aa993b JM |
5627 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5628 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5629 | } |
5630 | ||
5631 | /* Turn trailing newlines into returns */ | |
5632 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5633 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5634 | |
5635 | /* If the line consists of a ~, enter debugging mode. */ | |
5636 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5637 | return ENTER_DEBUG; | |
5638 | ||
5639 | /* Make this a zero terminated string and write it out */ | |
5640 | tty_input[tty_bytecount] = 0; | |
2cd58942 | 5641 | if (serial_write (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5642 | { |
5643 | perror_with_name ("readtty: write failed"); | |
5644 | return FATAL_ERROR; | |
5645 | } | |
5646 | ||
5647 | return READ_MORE; | |
5648 | } | |
5649 | ||
5650 | static int | |
c2d11a7d | 5651 | minitelnet (void) |
0f71a2f6 JM |
5652 | { |
5653 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5654 | int tablesize; /* max number of FDs for select */ |
5655 | int status; | |
5656 | int quit_count = 0; | |
0f71a2f6 JM |
5657 | |
5658 | extern int escape_count; /* global shared by readsocket */ | |
5659 | extern int echo_check; /* ditto */ | |
5660 | ||
5661 | escape_count = 0; | |
c5aa993b | 5662 | echo_check = -1; |
0f71a2f6 JM |
5663 | |
5664 | tablesize = 8 * sizeof (input); | |
5665 | ||
c5aa993b | 5666 | for (;;) |
0f71a2f6 JM |
5667 | { |
5668 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5669 | this must be done *before* the select as there may be |
5670 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5671 | |
c5aa993b | 5672 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5673 | { |
5674 | error ("Debugging terminated by communications error"); | |
5675 | } | |
c5aa993b | 5676 | else if (status != READ_MORE) |
0f71a2f6 JM |
5677 | { |
5678 | return (status); | |
5679 | } | |
5680 | ||
c5aa993b | 5681 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5682 | |
5683 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5684 | |
0f71a2f6 | 5685 | FD_ZERO (&input); |
c5aa993b | 5686 | FD_SET (fileno (stdin), &input); |
2cd58942 | 5687 | FD_SET (deprecated_serial_fd (remote_desc), &input); |
0f71a2f6 JM |
5688 | |
5689 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5690 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5691 | { |
5692 | error ("Communications error on select %d", errno); | |
5693 | } | |
5694 | ||
5695 | /* Handle Control-C typed */ | |
5696 | ||
c5aa993b | 5697 | if (quit_flag) |
0f71a2f6 JM |
5698 | { |
5699 | if ((++quit_count) == 2) | |
5700 | { | |
5701 | if (query ("Interrupt GDB? ")) | |
5702 | { | |
5703 | printf_filtered ("Interrupted by user.\n"); | |
5704 | return_to_top_level (RETURN_QUIT); | |
5705 | } | |
5706 | quit_count = 0; | |
5707 | } | |
5708 | quit_flag = 0; | |
5709 | ||
5710 | if (remote_break) | |
2cd58942 | 5711 | serial_send_break (remote_desc); |
0f71a2f6 | 5712 | else |
2cd58942 | 5713 | serial_write (remote_desc, "\003", 1); |
0f71a2f6 JM |
5714 | |
5715 | continue; | |
5716 | } | |
5717 | ||
5718 | /* Handle console input */ | |
5719 | ||
c5aa993b | 5720 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5721 | { |
5722 | quit_count = 0; | |
5723 | echo_check = 0; | |
5724 | status = readtty (); | |
5725 | if (status == READ_MORE) | |
5726 | continue; | |
5727 | ||
5728 | return status; /* telnet session ended */ | |
5729 | } | |
5730 | } | |
5731 | } | |
5732 | ||
39f77062 KB |
5733 | static ptid_t |
5734 | remote_cisco_wait (ptid_t ptid, struct target_waitstatus *status) | |
0f71a2f6 | 5735 | { |
c5aa993b | 5736 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5737 | { |
5738 | error ("Debugging session terminated by protocol error"); | |
5739 | } | |
5740 | putpkt ("?"); | |
39f77062 | 5741 | return remote_wait (ptid, status); |
0f71a2f6 JM |
5742 | } |
5743 | ||
5744 | static void | |
fba45db2 | 5745 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5746 | { |
5747 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5748 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5749 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5750 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5751 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5752 | remote_cisco_ops.to_open = remote_cisco_open; |
5753 | remote_cisco_ops.to_close = remote_cisco_close; | |
5754 | remote_cisco_ops.to_detach = remote_detach; | |
5755 | remote_cisco_ops.to_resume = remote_resume; | |
5756 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5757 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5758 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5759 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5760 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5761 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
5762 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5763 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5764 | remote_cisco_ops.to_kill = remote_kill; |
5765 | remote_cisco_ops.to_load = generic_load; | |
5766 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5767 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5768 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5769 | remote_cisco_ops.to_pid_to_str = remote_pid_to_str; |
5770 | remote_cisco_ops.to_extra_thread_info = remote_threads_extra_info; | |
c5aa993b JM |
5771 | remote_cisco_ops.to_stratum = process_stratum; |
5772 | remote_cisco_ops.to_has_all_memory = 1; | |
5773 | remote_cisco_ops.to_has_memory = 1; | |
5774 | remote_cisco_ops.to_has_stack = 1; | |
5775 | remote_cisco_ops.to_has_registers = 1; | |
5776 | remote_cisco_ops.to_has_execution = 1; | |
5777 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5778 | } |
5779 | ||
6426a772 JM |
5780 | static int |
5781 | remote_can_async_p (void) | |
5782 | { | |
5783 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5784 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5785 | } |
5786 | ||
5787 | static int | |
5788 | remote_is_async_p (void) | |
5789 | { | |
5790 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5791 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5792 | } |
5793 | ||
2acceee2 JM |
5794 | /* Pass the SERIAL event on and up to the client. One day this code |
5795 | will be able to delay notifying the client of an event until the | |
5796 | point where an entire packet has been received. */ | |
5797 | ||
5798 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5799 | static void *async_client_context; | |
5800 | static serial_event_ftype remote_async_serial_handler; | |
5801 | ||
6426a772 | 5802 | static void |
819cc324 | 5803 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5804 | { |
2acceee2 JM |
5805 | /* Don't propogate error information up to the client. Instead let |
5806 | the client find out about the error by querying the target. */ | |
5807 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5808 | } | |
5809 | ||
5810 | static void | |
5811 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5812 | { | |
ed9a39eb | 5813 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5814 | internal_error (__FILE__, __LINE__, |
5815 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5816 | |
2acceee2 JM |
5817 | if (callback != NULL) |
5818 | { | |
2cd58942 | 5819 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5820 | async_client_callback = callback; |
5821 | async_client_context = context; | |
5822 | } | |
5823 | else | |
2cd58942 | 5824 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5825 | } |
5826 | ||
43ff13b4 JM |
5827 | /* Target async and target extended-async. |
5828 | ||
5829 | This are temporary targets, until it is all tested. Eventually | |
5830 | async support will be incorporated int the usual 'remote' | |
5831 | target. */ | |
5832 | ||
5833 | static void | |
c2d11a7d | 5834 | init_remote_async_ops (void) |
43ff13b4 JM |
5835 | { |
5836 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5837 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5838 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5839 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5840 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5841 | remote_async_ops.to_open = remote_async_open; |
5842 | remote_async_ops.to_close = remote_close; | |
5843 | remote_async_ops.to_detach = remote_async_detach; | |
5844 | remote_async_ops.to_resume = remote_async_resume; | |
5845 | remote_async_ops.to_wait = remote_async_wait; | |
5846 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5847 | remote_async_ops.to_store_registers = remote_store_registers; | |
5848 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5849 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5850 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5851 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5852 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
6426a772 JM |
5853 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5854 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5855 | remote_async_ops.to_kill = remote_async_kill; |
5856 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5857 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5858 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5859 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5860 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5861 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 JM |
5862 | remote_async_ops.to_stop = remote_stop; |
5863 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5864 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5865 | remote_async_ops.to_stratum = process_stratum; |
5866 | remote_async_ops.to_has_all_memory = 1; | |
5867 | remote_async_ops.to_has_memory = 1; | |
5868 | remote_async_ops.to_has_stack = 1; | |
5869 | remote_async_ops.to_has_registers = 1; | |
5870 | remote_async_ops.to_has_execution = 1; | |
5871 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5872 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5873 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5874 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5875 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5876 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5877 | } |
5878 | ||
5879 | /* Set up the async extended remote vector by making a copy of the standard | |
5880 | remote vector and adding to it. */ | |
5881 | ||
5882 | static void | |
c2d11a7d | 5883 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5884 | { |
5885 | extended_async_remote_ops = remote_async_ops; | |
5886 | ||
5887 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5888 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5889 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5890 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5891 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5892 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5893 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5894 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5895 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5896 | } | |
5897 | ||
5a2468f5 | 5898 | static void |
c2d11a7d | 5899 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5900 | { |
5a2468f5 JM |
5901 | } |
5902 | ||
d471ea57 AC |
5903 | static void |
5904 | show_remote_cmd (char *args, int from_tty) | |
5905 | { | |
44eaed12 | 5906 | |
d471ea57 | 5907 | show_remote_protocol_Z_packet_cmd (args, from_tty); |
44eaed12 C |
5908 | show_remote_protocol_e_packet_cmd (args, from_tty); |
5909 | show_remote_protocol_E_packet_cmd (args, from_tty); | |
d471ea57 | 5910 | show_remote_protocol_P_packet_cmd (args, from_tty); |
dc8acb97 | 5911 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty); |
d471ea57 AC |
5912 | show_remote_protocol_binary_download_cmd (args, from_tty); |
5913 | } | |
5a2468f5 | 5914 | |
0f71a2f6 | 5915 | static void |
fba45db2 | 5916 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5917 | { |
d696208f | 5918 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5919 | } |
5920 | ||
dc8acb97 MS |
5921 | /* Saved pointer to previous owner of the new_objfile event. */ |
5922 | static void (*remote_new_objfile_chain) (struct objfile *); | |
5923 | ||
5924 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
5925 | static void | |
5926 | remote_new_objfile (struct objfile *objfile) | |
5927 | { | |
5928 | if (remote_desc != 0) /* Have a remote connection */ | |
5929 | { | |
5930 | remote_check_symbols (objfile); | |
5931 | } | |
5932 | /* Call predecessor on chain, if any. */ | |
5933 | if (remote_new_objfile_chain != 0 && | |
5934 | remote_desc == 0) | |
5935 | remote_new_objfile_chain (objfile); | |
5936 | } | |
5937 | ||
c906108c | 5938 | void |
fba45db2 | 5939 | _initialize_remote (void) |
c906108c | 5940 | { |
5a2468f5 JM |
5941 | static struct cmd_list_element *remote_set_cmdlist; |
5942 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5943 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5944 | |
0f71a2f6 | 5945 | /* architecture specific data */ |
d01949b6 AC |
5946 | remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state, |
5947 | free_remote_state); | |
5948 | ||
5949 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5950 | that the remote protocol has been initialized. */ | |
11cf8741 JM |
5951 | register_gdbarch_swap (&remote_address_size, |
5952 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
5953 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
5954 | ||
c906108c SS |
5955 | init_remote_ops (); |
5956 | add_target (&remote_ops); | |
5957 | ||
5958 | init_extended_remote_ops (); | |
5959 | add_target (&extended_remote_ops); | |
cce74817 | 5960 | |
43ff13b4 JM |
5961 | init_remote_async_ops (); |
5962 | add_target (&remote_async_ops); | |
5963 | ||
5964 | init_extended_async_remote_ops (); | |
5965 | add_target (&extended_async_remote_ops); | |
5966 | ||
0f71a2f6 JM |
5967 | init_remote_cisco_ops (); |
5968 | add_target (&remote_cisco_ops); | |
5969 | ||
dc8acb97 MS |
5970 | /* Hook into new objfile notification. */ |
5971 | remote_new_objfile_chain = target_new_objfile_hook; | |
5972 | target_new_objfile_hook = remote_new_objfile; | |
5973 | ||
c906108c SS |
5974 | #if 0 |
5975 | init_remote_threadtests (); | |
5976 | #endif | |
5977 | ||
d471ea57 AC |
5978 | /* set/show remote ... */ |
5979 | ||
5a2468f5 JM |
5980 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5981 | Remote protocol specific variables\n\ | |
5982 | Configure various remote-protocol specific variables such as\n\ | |
5983 | the packets being used", | |
cff3e48b | 5984 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5985 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5986 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5987 | Remote protocol specific variables\n\ |
5988 | Configure various remote-protocol specific variables such as\n\ | |
5989 | the packets being used", | |
cff3e48b | 5990 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5991 | 0/*allow-unknown*/, &showlist); |
5992 | ||
c5aa993b | 5993 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5994 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5995 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5996 | &cmdlist); |
5997 | ||
5998 | add_cmd ("packet", class_maintenance, packet_command, | |
5999 | "Send an arbitrary packet to a remote target.\n\ | |
6000 | maintenance packet TEXT\n\ | |
6001 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6002 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6003 | response packet. GDB supplies the initial `$' character, and the\n\ | |
6004 | terminating `#' character and checksum.", | |
6005 | &maintenancelist); | |
6006 | ||
c5aa993b | 6007 | add_show_from_set |
f3796e26 AC |
6008 | (add_set_boolean_cmd ("remotebreak", no_class, &remote_break, |
6009 | "Set whether to send break if interrupted.\n", | |
6010 | &setlist), | |
c906108c SS |
6011 | &showlist); |
6012 | ||
11cf8741 JM |
6013 | /* Install commands for configuring memory read/write packets. */ |
6014 | ||
6015 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
6016 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
6017 | &setlist); | |
4ad5b0f7 | 6018 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
6019 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
6020 | &showlist); | |
6021 | add_cmd ("memory-write-packet-size", no_class, | |
6022 | set_memory_write_packet_size, | |
6023 | "Set the maximum number of bytes per memory-write packet.\n" | |
6024 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6025 | "default packet size. The actual limit is further reduced\n" | |
6026 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6027 | "further restriction and ``limit'' to enable that restriction\n", | |
6028 | &remote_set_cmdlist); | |
6029 | add_cmd ("memory-read-packet-size", no_class, | |
6030 | set_memory_read_packet_size, | |
6031 | "Set the maximum number of bytes per memory-read packet.\n" | |
6032 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6033 | "default packet size. The actual limit is further reduced\n" | |
6034 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6035 | "further restriction and ``limit'' to enable that restriction\n", | |
6036 | &remote_set_cmdlist); | |
6037 | add_cmd ("memory-write-packet-size", no_class, | |
6038 | show_memory_write_packet_size, | |
6039 | "Show the maximum number of bytes per memory-write packet.\n", | |
6040 | &remote_show_cmdlist); | |
6041 | add_cmd ("memory-read-packet-size", no_class, | |
6042 | show_memory_read_packet_size, | |
6043 | "Show the maximum number of bytes per memory-read packet.\n", | |
6044 | &remote_show_cmdlist); | |
c906108c | 6045 | |
c5aa993b | 6046 | add_show_from_set |
c906108c | 6047 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 6048 | var_integer, (char *) &remote_address_size, |
c906108c SS |
6049 | "Set the maximum size of the address (in bits) \ |
6050 | in a memory packet.\n", | |
6051 | &setlist), | |
c5aa993b | 6052 | &showlist); |
c906108c | 6053 | |
96baa820 JM |
6054 | add_packet_config_cmd (&remote_protocol_binary_download, |
6055 | "X", "binary-download", | |
6056 | set_remote_protocol_binary_download_cmd, | |
6057 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
6058 | &remote_set_cmdlist, &remote_show_cmdlist, |
6059 | 1); | |
96baa820 JM |
6060 | #if 0 |
6061 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
6062 | compatibility. */ | |
c5aa993b | 6063 | add_show_from_set |
b83266a0 SS |
6064 | (add_set_cmd ("remotebinarydownload", no_class, |
6065 | var_boolean, (char *) &remote_binary_download, | |
6066 | "Set binary downloads.\n", &setlist), | |
6067 | &showlist); | |
96baa820 | 6068 | #endif |
0f71a2f6 JM |
6069 | |
6070 | add_info ("remote-process", remote_info_process, | |
6071 | "Query the remote system for process info."); | |
6072 | ||
dc8acb97 MS |
6073 | add_packet_config_cmd (&remote_protocol_qSymbol, |
6074 | "qSymbol", "symbol-lookup", | |
6075 | set_remote_protocol_qSymbol_packet_cmd, | |
6076 | show_remote_protocol_qSymbol_packet_cmd, | |
6077 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6078 | 0); | |
6079 | ||
44eaed12 C |
6080 | add_packet_config_cmd (&remote_protocol_e, |
6081 | "e", "step-over-range", | |
6082 | set_remote_protocol_e_packet_cmd, | |
6083 | show_remote_protocol_e_packet_cmd, | |
6084 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6085 | 0); | |
6086 | ||
6087 | add_packet_config_cmd (&remote_protocol_E, | |
6088 | "E", "step-over-range-w-signal", | |
6089 | set_remote_protocol_E_packet_cmd, | |
6090 | show_remote_protocol_E_packet_cmd, | |
6091 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6092 | 0); | |
6093 | ||
d471ea57 AC |
6094 | add_packet_config_cmd (&remote_protocol_P, |
6095 | "P", "set-register", | |
5a2468f5 JM |
6096 | set_remote_protocol_P_packet_cmd, |
6097 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
6098 | &remote_set_cmdlist, &remote_show_cmdlist, |
6099 | 1); | |
6100 | ||
6101 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
6102 | "Z0", "software-breakpoint", | |
6103 | set_remote_protocol_Z_software_bp_packet_cmd, | |
6104 | show_remote_protocol_Z_software_bp_packet_cmd, | |
6105 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6106 | 0); | |
6107 | ||
6108 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
6109 | "Z1", "hardware-breakpoint", | |
6110 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
6111 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
6112 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6113 | 0); | |
6114 | ||
6115 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
6116 | "Z2", "write-watchpoint", | |
6117 | set_remote_protocol_Z_write_wp_packet_cmd, | |
6118 | show_remote_protocol_Z_write_wp_packet_cmd, | |
6119 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6120 | 0); | |
6121 | ||
6122 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
6123 | "Z3", "read-watchpoint", | |
6124 | set_remote_protocol_Z_read_wp_packet_cmd, | |
6125 | show_remote_protocol_Z_read_wp_packet_cmd, | |
6126 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6127 | 0); | |
6128 | ||
6129 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
6130 | "Z4", "access-watchpoint", | |
6131 | set_remote_protocol_Z_access_wp_packet_cmd, | |
6132 | show_remote_protocol_Z_access_wp_packet_cmd, | |
6133 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6134 | 0); | |
6135 | ||
6136 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
6137 | tmpcmd = add_set_auto_boolean_cmd ("Z-packet", class_obscure, | |
6138 | &remote_Z_packet_detect, | |
6139 | "\ | |
6140 | Set use of remote protocol `Z' packets", &remote_set_cmdlist); | |
6141 | tmpcmd->function.sfunc = set_remote_protocol_Z_packet_cmd; | |
6142 | add_cmd ("Z-packet", class_obscure, show_remote_protocol_Z_packet_cmd, | |
6143 | "Show use of remote protocol `Z' packets ", | |
6144 | &remote_show_cmdlist); | |
c906108c | 6145 | } |