Commit | Line | Data |
---|---|---|
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. */ | |
b323314b | 225 | int in_g_packet; /* Always part of G packet. */ |
ad10f812 AC |
226 | /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */ |
227 | /* char *name; == REGISTER_NAME (regnum); at present. */ | |
228 | }; | |
229 | ||
d01949b6 AC |
230 | struct remote_state |
231 | { | |
ad10f812 AC |
232 | /* Description of the remote protocol registers. */ |
233 | long sizeof_g_packet; | |
b323314b AC |
234 | |
235 | /* Description of the remote protocol registers indexed by REGNUM | |
236 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
237 | struct packet_reg *regs; | |
ad10f812 | 238 | |
d01949b6 AC |
239 | /* This is the size (in chars) of the first response to the ``g'' |
240 | packet. It is used as a heuristic when determining the maximum | |
241 | size of memory-read and memory-write packets. A target will | |
242 | typically only reserve a buffer large enough to hold the ``g'' | |
243 | packet. The size does not include packet overhead (headers and | |
244 | trailers). */ | |
245 | long actual_register_packet_size; | |
246 | ||
247 | /* This is the maximum size (in chars) of a non read/write packet. | |
248 | It is also used as a cap on the size of read/write packets. */ | |
249 | long remote_packet_size; | |
250 | }; | |
251 | ||
252 | /* Handle for retreving the remote protocol data from gdbarch. */ | |
253 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
254 | ||
255 | static struct remote_state * | |
256 | get_remote_state () | |
257 | { | |
258 | return gdbarch_data (remote_gdbarch_data_handle); | |
259 | } | |
260 | ||
261 | static void * | |
262 | init_remote_state (struct gdbarch *gdbarch) | |
263 | { | |
264 | int regnum; | |
265 | struct remote_state *rs = xmalloc (sizeof (struct remote_state)); | |
266 | ||
ad10f812 AC |
267 | /* Start out by having the remote protocol mimic the existing |
268 | behavour - just copy in the description of the register cache. */ | |
269 | rs->sizeof_g_packet = REGISTER_BYTES; /* OK use. */ | |
270 | ||
b323314b AC |
271 | /* Assume a 1:1 regnum<->pnum table. */ |
272 | rs->regs = xcalloc (NUM_REGS + NUM_PSEUDO_REGS, sizeof (struct packet_reg)); | |
273 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) | |
ad10f812 | 274 | { |
b323314b AC |
275 | struct packet_reg *r = &rs->regs[regnum]; |
276 | r->pnum = regnum; | |
277 | r->regnum = regnum; | |
278 | r->offset = REGISTER_BYTE (regnum); | |
279 | r->in_g_packet = (regnum < NUM_REGS); | |
ad10f812 AC |
280 | /* ...size = REGISTER_RAW_SIZE (regnum); */ |
281 | /* ...name = REGISTER_NAME (regnum); */ | |
282 | } | |
283 | ||
d01949b6 AC |
284 | /* Default maximum number of characters in a packet body. Many |
285 | remote stubs have a hardwired buffer size of 400 bytes | |
286 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
287 | as the maximum packet-size to ensure that the packet and an extra | |
288 | NUL character can always fit in the buffer. This stops GDB | |
289 | trashing stubs that try to squeeze an extra NUL into what is | |
290 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
291 | rs->remote_packet_size = 400 - 1; | |
292 | ||
ad10f812 AC |
293 | /* Should rs->sizeof_g_packet needs more space than the |
294 | default, adjust the size accordingly. Remember that each byte is | |
295 | encoded as two characters. 32 is the overhead for the packet | |
296 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 AC |
297 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
298 | little. */ | |
ad10f812 AC |
299 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
300 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
d01949b6 AC |
301 | |
302 | /* This one is filled in when a ``g'' packet is received. */ | |
303 | rs->actual_register_packet_size = 0; | |
304 | ||
305 | return rs; | |
306 | } | |
307 | ||
308 | static void | |
309 | free_remote_state (struct gdbarch *gdbarch, void *pointer) | |
310 | { | |
ad10f812 | 311 | struct remote_state *data = pointer; |
b323314b | 312 | xfree (data->regs); |
ad10f812 AC |
313 | xfree (data); |
314 | } | |
315 | ||
316 | static struct packet_reg * | |
317 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
318 | { | |
b323314b AC |
319 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
320 | return NULL; | |
321 | else | |
ad10f812 | 322 | { |
b323314b AC |
323 | struct packet_reg *r = &rs->regs[regnum]; |
324 | gdb_assert (r->regnum == regnum); | |
325 | return r; | |
ad10f812 | 326 | } |
ad10f812 AC |
327 | } |
328 | ||
329 | static struct packet_reg * | |
330 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
331 | { | |
b323314b AC |
332 | int i; |
333 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 334 | { |
b323314b AC |
335 | struct packet_reg *r = &rs->regs[i]; |
336 | if (r->pnum == pnum) | |
337 | return r; | |
ad10f812 AC |
338 | } |
339 | return NULL; | |
d01949b6 AC |
340 | } |
341 | ||
c906108c SS |
342 | /* */ |
343 | ||
344 | static struct target_ops remote_ops; | |
345 | ||
346 | static struct target_ops extended_remote_ops; | |
347 | ||
43ff13b4 JM |
348 | /* Temporary target ops. Just like the remote_ops and |
349 | extended_remote_ops, but with asynchronous support. */ | |
350 | static struct target_ops remote_async_ops; | |
351 | ||
352 | static struct target_ops extended_async_remote_ops; | |
353 | ||
6426a772 JM |
354 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
355 | ``forever'' still use the normal timeout mechanism. This is | |
356 | currently used by the ASYNC code to guarentee that target reads | |
357 | during the initial connect always time-out. Once getpkt has been | |
358 | modified to return a timeout indication and, in turn | |
359 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
360 | this can go away. */ | |
361 | static int wait_forever_enabled_p = 1; | |
362 | ||
363 | ||
c906108c SS |
364 | /* This variable chooses whether to send a ^C or a break when the user |
365 | requests program interruption. Although ^C is usually what remote | |
366 | systems expect, and that is the default here, sometimes a break is | |
367 | preferable instead. */ | |
368 | ||
369 | static int remote_break; | |
370 | ||
c906108c SS |
371 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
372 | remote_open knows that we don't have a file open when the program | |
373 | starts. */ | |
819cc324 | 374 | static struct serial *remote_desc = NULL; |
c906108c | 375 | |
0f71a2f6 JM |
376 | /* This is set by the target (thru the 'S' message) |
377 | to denote that the target is in kernel mode. */ | |
378 | static int cisco_kernel_mode = 0; | |
379 | ||
c906108c SS |
380 | /* This variable sets the number of bits in an address that are to be |
381 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
382 | leading zeros, the entire address would be sent. This variable | |
383 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
384 | initial implementation of remote.c restricted the address sent in | |
385 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
386 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
387 | address was never sent. Since fixing this bug may cause a break in | |
388 | some remote targets this variable is principly provided to | |
389 | facilitate backward compatibility. */ | |
390 | ||
391 | static int remote_address_size; | |
392 | ||
6426a772 JM |
393 | /* Tempoary to track who currently owns the terminal. See |
394 | target_async_terminal_* for more details. */ | |
395 | ||
396 | static int remote_async_terminal_ours_p; | |
397 | ||
11cf8741 | 398 | \f |
11cf8741 | 399 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
400 | memory read/write packet. MIN ((rs->remote_packet_size), |
401 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
402 | values (fifo overruns, et.al.) and some users need larger values | |
403 | (speed up transfers). The variables ``preferred_*'' (the user | |
404 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
405 | (Positive - a soft limit, negative - a hard limit). */ | |
11cf8741 JM |
406 | |
407 | struct memory_packet_config | |
408 | { | |
409 | char *name; | |
410 | long size; | |
411 | int fixed_p; | |
412 | }; | |
413 | ||
414 | /* Compute the current size of a read/write packet. Since this makes | |
415 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
416 | ||
417 | static long | |
418 | get_memory_packet_size (struct memory_packet_config *config) | |
419 | { | |
d01949b6 | 420 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
421 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
422 | law?) that some hosts don't cope very well with large alloca() | |
423 | calls. Eventually the alloca() code will be replaced by calls to | |
424 | xmalloc() and make_cleanups() allowing this restriction to either | |
425 | be lifted or removed. */ | |
426 | #ifndef MAX_REMOTE_PACKET_SIZE | |
427 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
428 | #endif | |
429 | /* NOTE: 16 is just chosen at random. */ | |
430 | #ifndef MIN_REMOTE_PACKET_SIZE | |
431 | #define MIN_REMOTE_PACKET_SIZE 16 | |
432 | #endif | |
433 | long what_they_get; | |
434 | if (config->fixed_p) | |
435 | { | |
436 | if (config->size <= 0) | |
437 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
438 | else | |
439 | what_they_get = config->size; | |
440 | } | |
441 | else | |
442 | { | |
d01949b6 | 443 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
444 | /* Limit the packet to the size specified by the user. */ |
445 | if (config->size > 0 | |
446 | && what_they_get > config->size) | |
447 | what_they_get = config->size; | |
448 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
449 | if ((rs->actual_register_packet_size) > 0 |
450 | && what_they_get > (rs->actual_register_packet_size)) | |
451 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
452 | } |
453 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
454 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
455 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
456 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
457 | return what_they_get; | |
458 | } | |
459 | ||
460 | /* Update the size of a read/write packet. If they user wants | |
461 | something really big then do a sanity check. */ | |
462 | ||
463 | static void | |
464 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
465 | { | |
466 | int fixed_p = config->fixed_p; | |
467 | long size = config->size; | |
468 | if (args == NULL) | |
469 | error ("Argument required (integer, `fixed' or `limited')."); | |
470 | else if (strcmp (args, "hard") == 0 | |
471 | || strcmp (args, "fixed") == 0) | |
472 | fixed_p = 1; | |
473 | else if (strcmp (args, "soft") == 0 | |
474 | || strcmp (args, "limit") == 0) | |
475 | fixed_p = 0; | |
476 | else | |
477 | { | |
478 | char *end; | |
479 | size = strtoul (args, &end, 0); | |
480 | if (args == end) | |
481 | error ("Invalid %s (bad syntax).", config->name); | |
482 | #if 0 | |
483 | /* Instead of explicitly capping the size of a packet to | |
484 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
485 | instead allowed to set the size to something arbitrarily | |
486 | large. */ | |
487 | if (size > MAX_REMOTE_PACKET_SIZE) | |
488 | error ("Invalid %s (too large).", config->name); | |
489 | #endif | |
490 | } | |
491 | /* Extra checks? */ | |
492 | if (fixed_p && !config->fixed_p) | |
493 | { | |
494 | if (! query ("The target may not be able to correctly handle a %s\n" | |
495 | "of %ld bytes. Change the packet size? ", | |
496 | config->name, size)) | |
497 | error ("Packet size not changed."); | |
498 | } | |
499 | /* Update the config. */ | |
500 | config->fixed_p = fixed_p; | |
501 | config->size = size; | |
502 | } | |
503 | ||
504 | static void | |
505 | show_memory_packet_size (struct memory_packet_config *config) | |
506 | { | |
507 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
508 | if (config->fixed_p) | |
509 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
510 | get_memory_packet_size (config)); | |
511 | else | |
512 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
513 | get_memory_packet_size (config)); | |
514 | } | |
515 | ||
516 | static struct memory_packet_config memory_write_packet_config = | |
517 | { | |
518 | "memory-write-packet-size", | |
519 | }; | |
520 | ||
521 | static void | |
522 | set_memory_write_packet_size (char *args, int from_tty) | |
523 | { | |
524 | set_memory_packet_size (args, &memory_write_packet_config); | |
525 | } | |
526 | ||
527 | static void | |
528 | show_memory_write_packet_size (char *args, int from_tty) | |
529 | { | |
530 | show_memory_packet_size (&memory_write_packet_config); | |
531 | } | |
532 | ||
533 | static long | |
534 | get_memory_write_packet_size (void) | |
535 | { | |
536 | return get_memory_packet_size (&memory_write_packet_config); | |
537 | } | |
538 | ||
539 | static struct memory_packet_config memory_read_packet_config = | |
540 | { | |
541 | "memory-read-packet-size", | |
542 | }; | |
543 | ||
544 | static void | |
545 | set_memory_read_packet_size (char *args, int from_tty) | |
546 | { | |
547 | set_memory_packet_size (args, &memory_read_packet_config); | |
548 | } | |
549 | ||
550 | static void | |
551 | show_memory_read_packet_size (char *args, int from_tty) | |
552 | { | |
553 | show_memory_packet_size (&memory_read_packet_config); | |
554 | } | |
555 | ||
556 | static long | |
557 | get_memory_read_packet_size (void) | |
558 | { | |
d01949b6 | 559 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
560 | long size = get_memory_packet_size (&memory_read_packet_config); |
561 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
562 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
563 | increased beyond (rs->remote_packet_size). */ |
564 | if (size > (rs->remote_packet_size)) | |
565 | size = (rs->remote_packet_size); | |
11cf8741 JM |
566 | return size; |
567 | } | |
568 | ||
11cf8741 | 569 | \f |
5a2468f5 JM |
570 | /* Generic configuration support for packets the stub optionally |
571 | supports. Allows the user to specify the use of the packet as well | |
572 | as allowing GDB to auto-detect support in the remote stub. */ | |
573 | ||
574 | enum packet_support | |
575 | { | |
576 | PACKET_SUPPORT_UNKNOWN = 0, | |
577 | PACKET_ENABLE, | |
578 | PACKET_DISABLE | |
579 | }; | |
580 | ||
5a2468f5 JM |
581 | struct packet_config |
582 | { | |
5a2468f5 JM |
583 | char *name; |
584 | char *title; | |
8e248173 | 585 | enum cmd_auto_boolean detect; |
5a2468f5 JM |
586 | enum packet_support support; |
587 | }; | |
588 | ||
d471ea57 AC |
589 | /* Analyze a packet's return value and update the packet config |
590 | accordingly. */ | |
591 | ||
592 | enum packet_result | |
593 | { | |
594 | PACKET_ERROR, | |
595 | PACKET_OK, | |
596 | PACKET_UNKNOWN | |
597 | }; | |
598 | ||
5a2468f5 | 599 | static void |
d471ea57 | 600 | update_packet_config (struct packet_config *config) |
5a2468f5 | 601 | { |
d471ea57 AC |
602 | switch (config->detect) |
603 | { | |
604 | case CMD_AUTO_BOOLEAN_TRUE: | |
605 | config->support = PACKET_ENABLE; | |
606 | break; | |
607 | case CMD_AUTO_BOOLEAN_FALSE: | |
608 | config->support = PACKET_DISABLE; | |
609 | break; | |
610 | case CMD_AUTO_BOOLEAN_AUTO: | |
611 | config->support = PACKET_SUPPORT_UNKNOWN; | |
612 | break; | |
613 | } | |
5a2468f5 JM |
614 | } |
615 | ||
616 | static void | |
fba45db2 | 617 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
618 | { |
619 | char *support = "internal-error"; | |
620 | switch (config->support) | |
621 | { | |
622 | case PACKET_ENABLE: | |
623 | support = "enabled"; | |
624 | break; | |
625 | case PACKET_DISABLE: | |
626 | support = "disabled"; | |
627 | break; | |
628 | case PACKET_SUPPORT_UNKNOWN: | |
629 | support = "unknown"; | |
630 | break; | |
631 | } | |
632 | switch (config->detect) | |
633 | { | |
8e248173 | 634 | case CMD_AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
635 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
636 | config->name, config->title, support); | |
637 | break; | |
8e248173 AC |
638 | case CMD_AUTO_BOOLEAN_TRUE: |
639 | case CMD_AUTO_BOOLEAN_FALSE: | |
640 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", | |
5a2468f5 | 641 | config->name, config->title, support); |
8e248173 | 642 | break; |
5a2468f5 JM |
643 | } |
644 | } | |
645 | ||
646 | static void | |
d471ea57 AC |
647 | add_packet_config_cmd (struct packet_config *config, |
648 | char *name, | |
649 | char *title, | |
650 | void (*set_func) (char *args, int from_tty, | |
651 | struct cmd_list_element * | |
652 | c), | |
653 | void (*show_func) (char *name, | |
654 | int from_tty), | |
655 | struct cmd_list_element **set_remote_list, | |
656 | struct cmd_list_element **show_remote_list, | |
657 | int legacy) | |
658 | { | |
659 | struct cmd_list_element *set_cmd; | |
660 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
661 | char *set_doc; |
662 | char *show_doc; | |
d471ea57 | 663 | char *cmd_name; |
5a2468f5 JM |
664 | config->name = name; |
665 | config->title = title; | |
8e248173 AC |
666 | config->detect = CMD_AUTO_BOOLEAN_AUTO; |
667 | config->support = PACKET_SUPPORT_UNKNOWN; | |
76995688 AC |
668 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
669 | name, title); | |
670 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
671 | name, title); | |
d471ea57 | 672 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 673 | xasprintf (&cmd_name, "%s-packet", title); |
d471ea57 AC |
674 | set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure, |
675 | &config->detect, set_doc, | |
676 | set_remote_list); | |
677 | set_cmd->function.sfunc = set_func; | |
678 | show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc, | |
679 | show_remote_list); | |
680 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ | |
681 | if (legacy) | |
682 | { | |
683 | char *legacy_name; | |
76995688 | 684 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
685 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
686 | set_remote_list); | |
687 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
688 | show_remote_list); | |
689 | } | |
5a2468f5 JM |
690 | } |
691 | ||
d471ea57 AC |
692 | static enum packet_result |
693 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 694 | { |
d471ea57 | 695 | if (buf[0] != '\0') |
5a2468f5 | 696 | { |
d471ea57 AC |
697 | /* The stub recognized the packet request. Check that the |
698 | operation succeeded. */ | |
699 | switch (config->support) | |
700 | { | |
701 | case PACKET_SUPPORT_UNKNOWN: | |
702 | if (remote_debug) | |
703 | fprintf_unfiltered (gdb_stdlog, | |
704 | "Packet %s (%s) is supported\n", | |
705 | config->name, config->title); | |
706 | config->support = PACKET_ENABLE; | |
707 | break; | |
708 | case PACKET_DISABLE: | |
8e65ff28 AC |
709 | internal_error (__FILE__, __LINE__, |
710 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
711 | break; |
712 | case PACKET_ENABLE: | |
713 | break; | |
714 | } | |
715 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
716 | /* "OK" - definitly OK. */ | |
717 | return PACKET_OK; | |
718 | if (buf[0] == 'E' | |
719 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
720 | && buf[3] == '\0') | |
721 | /* "Enn" - definitly an error. */ | |
722 | return PACKET_ERROR; | |
723 | /* The packet may or may not be OK. Just assume it is */ | |
724 | return PACKET_OK; | |
725 | } | |
726 | else | |
727 | { | |
728 | /* The stub does not support the packet. */ | |
729 | switch (config->support) | |
730 | { | |
731 | case PACKET_ENABLE: | |
732 | if (config->detect == CMD_AUTO_BOOLEAN_AUTO) | |
733 | /* If the stub previously indicated that the packet was | |
734 | supported then there is a protocol error.. */ | |
735 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
736 | config->name, config->title); | |
737 | else | |
738 | /* The user set it wrong. */ | |
739 | error ("Enabled packet %s (%s) not recognized by stub", | |
740 | config->name, config->title); | |
741 | break; | |
742 | case PACKET_SUPPORT_UNKNOWN: | |
743 | if (remote_debug) | |
744 | fprintf_unfiltered (gdb_stdlog, | |
745 | "Packet %s (%s) is NOT supported\n", | |
746 | config->name, config->title); | |
747 | config->support = PACKET_DISABLE; | |
748 | break; | |
749 | case PACKET_DISABLE: | |
750 | break; | |
751 | } | |
752 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
753 | } |
754 | } | |
755 | ||
dc8acb97 MS |
756 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
757 | static struct packet_config remote_protocol_qSymbol; | |
758 | ||
759 | static void | |
760 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
761 | struct cmd_list_element *c) | |
762 | { | |
763 | update_packet_config (&remote_protocol_qSymbol); | |
764 | } | |
765 | ||
766 | static void | |
767 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty) | |
768 | { | |
769 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
770 | } | |
771 | ||
44eaed12 C |
772 | /* Should we try the 'e' (step over range) request? */ |
773 | static struct packet_config remote_protocol_e; | |
774 | ||
775 | static void | |
776 | set_remote_protocol_e_packet_cmd (char *args, int from_tty, | |
777 | struct cmd_list_element *c) | |
778 | { | |
779 | update_packet_config (&remote_protocol_e); | |
780 | } | |
781 | ||
782 | static void | |
783 | show_remote_protocol_e_packet_cmd (char *args, int from_tty) | |
784 | { | |
785 | show_packet_config_cmd (&remote_protocol_e); | |
786 | } | |
787 | ||
788 | ||
789 | /* Should we try the 'E' (step over range / w signal #) request? */ | |
790 | static struct packet_config remote_protocol_E; | |
791 | ||
792 | static void | |
793 | set_remote_protocol_E_packet_cmd (char *args, int from_tty, | |
794 | struct cmd_list_element *c) | |
795 | { | |
796 | update_packet_config (&remote_protocol_E); | |
797 | } | |
798 | ||
799 | static void | |
800 | show_remote_protocol_E_packet_cmd (char *args, int from_tty) | |
801 | { | |
802 | show_packet_config_cmd (&remote_protocol_E); | |
803 | } | |
804 | ||
805 | ||
5a2468f5 JM |
806 | /* Should we try the 'P' (set register) request? */ |
807 | ||
808 | static struct packet_config remote_protocol_P; | |
809 | ||
810 | static void | |
fba45db2 KB |
811 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
812 | struct cmd_list_element *c) | |
5a2468f5 | 813 | { |
d471ea57 | 814 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
815 | } |
816 | ||
817 | static void | |
fba45db2 | 818 | show_remote_protocol_P_packet_cmd (char *args, int from_tty) |
5a2468f5 JM |
819 | { |
820 | show_packet_config_cmd (&remote_protocol_P); | |
821 | } | |
822 | ||
d471ea57 AC |
823 | /* Should we try one of the 'Z' requests? */ |
824 | ||
825 | enum Z_packet_type | |
826 | { | |
827 | Z_PACKET_SOFTWARE_BP, | |
828 | Z_PACKET_HARDWARE_BP, | |
829 | Z_PACKET_WRITE_WP, | |
830 | Z_PACKET_READ_WP, | |
831 | Z_PACKET_ACCESS_WP, | |
832 | NR_Z_PACKET_TYPES | |
833 | }; | |
96baa820 | 834 | |
d471ea57 AC |
835 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
836 | ||
837 | /* FIXME: Instead of having all these boiler plate functions, the | |
838 | command callback should include a context argument. */ | |
839 | ||
840 | static void | |
841 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
842 | struct cmd_list_element *c) | |
843 | { | |
844 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
845 | } | |
846 | ||
847 | static void | |
848 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty) | |
849 | { | |
850 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
851 | } | |
852 | ||
853 | static void | |
854 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
855 | struct cmd_list_element *c) | |
856 | { | |
857 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
858 | } | |
859 | ||
860 | static void | |
861 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty) | |
862 | { | |
863 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
864 | } | |
865 | ||
866 | static void | |
867 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
868 | struct cmd_list_element *c) | |
869 | { | |
870 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
871 | } | |
872 | ||
873 | static void | |
874 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty) | |
875 | { | |
876 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
877 | } | |
878 | ||
879 | static void | |
880 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
881 | struct cmd_list_element *c) | |
882 | { | |
883 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
884 | } | |
885 | ||
886 | static void | |
887 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty) | |
888 | { | |
889 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
890 | } | |
891 | ||
892 | static void | |
893 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
894 | struct cmd_list_element *c) | |
895 | { | |
896 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
897 | } | |
898 | ||
899 | static void | |
900 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty) | |
901 | { | |
902 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
903 | } | |
904 | ||
905 | /* For compatibility with older distributions. Provide a ``set remote | |
906 | Z-packet ...'' command that updates all the Z packet types. */ | |
907 | ||
908 | static enum cmd_auto_boolean remote_Z_packet_detect; | |
96baa820 JM |
909 | |
910 | static void | |
fba45db2 KB |
911 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
912 | struct cmd_list_element *c) | |
96baa820 | 913 | { |
d471ea57 AC |
914 | int i; |
915 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
916 | { | |
917 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
918 | update_packet_config (&remote_protocol_Z[i]); | |
919 | } | |
96baa820 JM |
920 | } |
921 | ||
922 | static void | |
fba45db2 | 923 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty) |
96baa820 | 924 | { |
d471ea57 AC |
925 | int i; |
926 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
927 | { | |
928 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
929 | } | |
96baa820 JM |
930 | } |
931 | ||
932 | /* Should we try the 'X' (remote binary download) packet? | |
933 | ||
934 | This variable (available to the user via "set remote X-packet") | |
935 | dictates whether downloads are sent in binary (via the 'X' packet). | |
936 | We assume that the stub can, and attempt to do it. This will be | |
937 | cleared if the stub does not understand it. This switch is still | |
938 | needed, though in cases when the packet is supported in the stub, | |
939 | but the connection does not allow it (i.e., 7-bit serial connection | |
940 | only). */ | |
941 | ||
942 | static struct packet_config remote_protocol_binary_download; | |
943 | ||
9d1f7ab2 MS |
944 | /* Should we try the 'ThreadInfo' query packet? |
945 | ||
946 | This variable (NOT available to the user: auto-detect only!) | |
947 | determines whether GDB will use the new, simpler "ThreadInfo" | |
948 | query or the older, more complex syntax for thread queries. | |
949 | This is an auto-detect variable (set to true at each connect, | |
950 | and set to false when the target fails to recognize it). */ | |
951 | ||
952 | static int use_threadinfo_query; | |
953 | static int use_threadextra_query; | |
954 | ||
96baa820 JM |
955 | static void |
956 | set_remote_protocol_binary_download_cmd (char *args, | |
957 | int from_tty, | |
958 | struct cmd_list_element *c) | |
959 | { | |
d471ea57 | 960 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
961 | } |
962 | ||
963 | static void | |
964 | show_remote_protocol_binary_download_cmd (char *args, | |
965 | int from_tty) | |
966 | { | |
967 | show_packet_config_cmd (&remote_protocol_binary_download); | |
968 | } | |
969 | ||
c906108c | 970 | |
43ff13b4 JM |
971 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
972 | PTR sigint_remote_twice_token; | |
973 | PTR sigint_remote_token; | |
974 | ||
c906108c SS |
975 | /* These are pointers to hook functions that may be set in order to |
976 | modify resume/wait behavior for a particular architecture. */ | |
977 | ||
507f3c78 KB |
978 | void (*target_resume_hook) (void); |
979 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
980 | \f |
981 | ||
c5aa993b | 982 | |
c906108c SS |
983 | /* These are the threads which we last sent to the remote system. |
984 | -1 for all or -2 for not sent yet. */ | |
985 | static int general_thread; | |
cce74817 | 986 | static int continue_thread; |
c906108c SS |
987 | |
988 | /* Call this function as a result of | |
989 | 1) A halt indication (T packet) containing a thread id | |
990 | 2) A direct query of currthread | |
991 | 3) Successful execution of set thread | |
992 | */ | |
993 | ||
994 | static void | |
fba45db2 | 995 | record_currthread (int currthread) |
c906108c | 996 | { |
c906108c | 997 | general_thread = currthread; |
cce74817 | 998 | |
c906108c SS |
999 | /* If this is a new thread, add it to GDB's thread list. |
1000 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1001 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1002 | { |
39f77062 | 1003 | add_thread (pid_to_ptid (currthread)); |
8b93c638 JM |
1004 | #ifdef UI_OUT |
1005 | ui_out_text (uiout, "[New "); | |
39f77062 | 1006 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 JM |
1007 | ui_out_text (uiout, "]\n"); |
1008 | #else | |
39f77062 KB |
1009 | printf_filtered ("[New %s]\n", |
1010 | target_pid_to_str (pid_to_ptid (currthread))); | |
8b93c638 | 1011 | #endif |
0f71a2f6 | 1012 | } |
c906108c SS |
1013 | } |
1014 | ||
1015 | #define MAGIC_NULL_PID 42000 | |
1016 | ||
1017 | static void | |
fba45db2 | 1018 | set_thread (int th, int gen) |
c906108c | 1019 | { |
d01949b6 AC |
1020 | struct remote_state *rs = get_remote_state (); |
1021 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1022 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1023 | |
1024 | if (state == th) | |
1025 | return; | |
1026 | ||
1027 | buf[0] = 'H'; | |
1028 | buf[1] = gen ? 'g' : 'c'; | |
1029 | if (th == MAGIC_NULL_PID) | |
1030 | { | |
1031 | buf[2] = '0'; | |
1032 | buf[3] = '\0'; | |
1033 | } | |
1034 | else if (th < 0) | |
1035 | sprintf (&buf[2], "-%x", -th); | |
1036 | else | |
1037 | sprintf (&buf[2], "%x", th); | |
1038 | putpkt (buf); | |
d01949b6 | 1039 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1040 | if (gen) |
c5aa993b | 1041 | general_thread = th; |
c906108c | 1042 | else |
cce74817 | 1043 | continue_thread = th; |
c906108c SS |
1044 | } |
1045 | \f | |
1046 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1047 | ||
1048 | static int | |
39f77062 | 1049 | remote_thread_alive (ptid_t ptid) |
c906108c | 1050 | { |
39f77062 | 1051 | int tid = PIDGET (ptid); |
cce74817 | 1052 | char buf[16]; |
c906108c | 1053 | |
cce74817 JM |
1054 | if (tid < 0) |
1055 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1056 | else |
cce74817 | 1057 | sprintf (buf, "T%08x", tid); |
c906108c | 1058 | putpkt (buf); |
c2d11a7d | 1059 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1060 | return (buf[0] == 'O' && buf[1] == 'K'); |
1061 | } | |
1062 | ||
1063 | /* About these extended threadlist and threadinfo packets. They are | |
1064 | variable length packets but, the fields within them are often fixed | |
1065 | length. They are redundent enough to send over UDP as is the | |
1066 | remote protocol in general. There is a matching unit test module | |
1067 | in libstub. */ | |
1068 | ||
cce74817 JM |
1069 | #define OPAQUETHREADBYTES 8 |
1070 | ||
1071 | /* a 64 bit opaque identifier */ | |
1072 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1073 | ||
1074 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1075 | protocol encoding, and remote.c. it is not particularly changable */ | |
1076 | ||
1077 | /* Right now, the internal structure is int. We want it to be bigger. | |
1078 | Plan to fix this. | |
c5aa993b | 1079 | */ |
cce74817 | 1080 | |
c5aa993b | 1081 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1082 | |
9d1f7ab2 | 1083 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1084 | equivalint to the reply of the remote threadinfo packet */ |
1085 | ||
1086 | struct gdb_ext_thread_info | |
c5aa993b JM |
1087 | { |
1088 | threadref threadid; /* External form of thread reference */ | |
1089 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1090 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1091 | char shortname[32]; /* To be used to name threads */ | |
1092 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1093 | }; | |
cce74817 JM |
1094 | |
1095 | /* The volume of remote transfers can be limited by submitting | |
1096 | a mask containing bits specifying the desired information. | |
1097 | Use a union of these values as the 'selection' parameter to | |
1098 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1099 | */ |
cce74817 JM |
1100 | |
1101 | #define TAG_THREADID 1 | |
1102 | #define TAG_EXISTS 2 | |
1103 | #define TAG_DISPLAY 4 | |
1104 | #define TAG_THREADNAME 8 | |
c5aa993b | 1105 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1106 | |
c906108c SS |
1107 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1108 | ||
a14ed312 | 1109 | char *unpack_varlen_hex (char *buff, int *result); |
cce74817 | 1110 | |
a14ed312 | 1111 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1112 | |
a14ed312 | 1113 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1114 | |
a14ed312 | 1115 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1116 | |
a14ed312 | 1117 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1118 | |
a14ed312 | 1119 | static char *pack_int (char *buf, int value); |
cce74817 | 1120 | |
a14ed312 | 1121 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1122 | |
a14ed312 | 1123 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1124 | |
a14ed312 | 1125 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1126 | |
a14ed312 | 1127 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1128 | |
a14ed312 | 1129 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1130 | |
a14ed312 | 1131 | static int threadref_to_int (threadref * ref); |
cce74817 | 1132 | |
a14ed312 | 1133 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1134 | |
a14ed312 | 1135 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1136 | |
a14ed312 | 1137 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1138 | |
a14ed312 KB |
1139 | static int remote_unpack_thread_info_response (char *pkt, |
1140 | threadref * expectedref, | |
1141 | struct gdb_ext_thread_info | |
1142 | *info); | |
cce74817 JM |
1143 | |
1144 | ||
a14ed312 KB |
1145 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1146 | struct gdb_ext_thread_info *info); | |
cce74817 | 1147 | |
a14ed312 KB |
1148 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1149 | int selection, | |
1150 | struct gdb_ext_thread_info *info); | |
cce74817 | 1151 | |
a14ed312 KB |
1152 | static char *pack_threadlist_request (char *pkt, int startflag, |
1153 | int threadcount, | |
1154 | threadref * nextthread); | |
cce74817 | 1155 | |
a14ed312 KB |
1156 | static int parse_threadlist_response (char *pkt, |
1157 | int result_limit, | |
1158 | threadref * original_echo, | |
1159 | threadref * resultlist, int *doneflag); | |
cce74817 | 1160 | |
a14ed312 KB |
1161 | static int remote_get_threadlist (int startflag, |
1162 | threadref * nextthread, | |
1163 | int result_limit, | |
1164 | int *done, | |
1165 | int *result_count, threadref * threadlist); | |
cce74817 | 1166 | |
c5aa993b | 1167 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1168 | |
a14ed312 KB |
1169 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1170 | void *context, int looplimit); | |
cce74817 | 1171 | |
a14ed312 | 1172 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1173 | |
c906108c SS |
1174 | /* encode 64 bits in 16 chars of hex */ |
1175 | ||
1176 | static const char hexchars[] = "0123456789abcdef"; | |
1177 | ||
1178 | static int | |
fba45db2 | 1179 | ishex (int ch, int *val) |
c906108c SS |
1180 | { |
1181 | if ((ch >= 'a') && (ch <= 'f')) | |
1182 | { | |
1183 | *val = ch - 'a' + 10; | |
1184 | return 1; | |
1185 | } | |
1186 | if ((ch >= 'A') && (ch <= 'F')) | |
1187 | { | |
1188 | *val = ch - 'A' + 10; | |
1189 | return 1; | |
1190 | } | |
1191 | if ((ch >= '0') && (ch <= '9')) | |
1192 | { | |
1193 | *val = ch - '0'; | |
1194 | return 1; | |
1195 | } | |
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | static int | |
fba45db2 | 1200 | stubhex (int ch) |
c906108c SS |
1201 | { |
1202 | if (ch >= 'a' && ch <= 'f') | |
1203 | return ch - 'a' + 10; | |
1204 | if (ch >= '0' && ch <= '9') | |
1205 | return ch - '0'; | |
1206 | if (ch >= 'A' && ch <= 'F') | |
1207 | return ch - 'A' + 10; | |
1208 | return -1; | |
1209 | } | |
1210 | ||
1211 | static int | |
fba45db2 | 1212 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1213 | { |
1214 | int nibble; | |
1215 | int retval = 0; | |
1216 | ||
1217 | while (fieldlength) | |
1218 | { | |
1219 | nibble = stubhex (*buff++); | |
1220 | retval |= nibble; | |
1221 | fieldlength--; | |
1222 | if (fieldlength) | |
1223 | retval = retval << 4; | |
1224 | } | |
1225 | return retval; | |
1226 | } | |
1227 | ||
1228 | char * | |
fba45db2 KB |
1229 | unpack_varlen_hex (char *buff, /* packet to parse */ |
1230 | int *result) | |
c906108c SS |
1231 | { |
1232 | int nibble; | |
1233 | int retval = 0; | |
1234 | ||
1235 | while (ishex (*buff, &nibble)) | |
1236 | { | |
1237 | buff++; | |
1238 | retval = retval << 4; | |
1239 | retval |= nibble & 0x0f; | |
1240 | } | |
1241 | *result = retval; | |
1242 | return buff; | |
1243 | } | |
1244 | ||
1245 | static char * | |
fba45db2 | 1246 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1247 | { |
1248 | ishex (*buf++, val); | |
1249 | return buf; | |
1250 | } | |
1251 | ||
1252 | static char * | |
fba45db2 | 1253 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1254 | { |
1255 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1256 | return buf; | |
1257 | } | |
1258 | ||
1259 | static char * | |
fba45db2 | 1260 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1261 | { |
1262 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1263 | *pkt++ = hexchars[(byte & 0xf)]; | |
1264 | return pkt; | |
1265 | } | |
1266 | ||
1267 | static char * | |
fba45db2 | 1268 | unpack_byte (char *buf, int *value) |
c906108c SS |
1269 | { |
1270 | *value = stub_unpack_int (buf, 2); | |
1271 | return buf + 2; | |
1272 | } | |
1273 | ||
1274 | static char * | |
fba45db2 | 1275 | pack_int (char *buf, int value) |
c906108c SS |
1276 | { |
1277 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1278 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1279 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1280 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1281 | return buf; | |
1282 | } | |
1283 | ||
1284 | static char * | |
fba45db2 | 1285 | unpack_int (char *buf, int *value) |
c906108c SS |
1286 | { |
1287 | *value = stub_unpack_int (buf, 8); | |
1288 | return buf + 8; | |
1289 | } | |
1290 | ||
c5aa993b | 1291 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1292 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1293 | |
1294 | static char * | |
fba45db2 | 1295 | pack_string (char *pkt, char *string) |
c906108c SS |
1296 | { |
1297 | char ch; | |
1298 | int len; | |
1299 | ||
1300 | len = strlen (string); | |
1301 | if (len > 200) | |
1302 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1303 | pkt = pack_hex_byte (pkt, len); | |
1304 | while (len-- > 0) | |
1305 | { | |
1306 | ch = *string++; | |
1307 | if ((ch == '\0') || (ch == '#')) | |
1308 | ch = '*'; /* Protect encapsulation */ | |
1309 | *pkt++ = ch; | |
1310 | } | |
1311 | return pkt; | |
1312 | } | |
1313 | #endif /* 0 (unused) */ | |
1314 | ||
1315 | static char * | |
fba45db2 | 1316 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1317 | { |
1318 | while (length--) | |
1319 | *dest++ = *src++; | |
1320 | *dest = '\0'; | |
1321 | return src; | |
1322 | } | |
1323 | ||
1324 | static char * | |
fba45db2 | 1325 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1326 | { |
1327 | char *limit; | |
1328 | unsigned char *altid; | |
1329 | ||
1330 | altid = (unsigned char *) id; | |
1331 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1332 | while (pkt < limit) | |
1333 | pkt = pack_hex_byte (pkt, *altid++); | |
1334 | return pkt; | |
1335 | } | |
1336 | ||
1337 | ||
1338 | static char * | |
fba45db2 | 1339 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1340 | { |
1341 | char *altref; | |
1342 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1343 | int x, y; | |
1344 | ||
1345 | altref = (char *) id; | |
1346 | ||
1347 | while (inbuf < limit) | |
1348 | { | |
1349 | x = stubhex (*inbuf++); | |
1350 | y = stubhex (*inbuf++); | |
1351 | *altref++ = (x << 4) | y; | |
1352 | } | |
1353 | return inbuf; | |
1354 | } | |
1355 | ||
1356 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1357 | ints. This is due to a mismatch of specifications. We would like | |
1358 | to use 64bit thread references internally. This is an adapter | |
1359 | function. */ | |
1360 | ||
1361 | void | |
fba45db2 | 1362 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1363 | { |
1364 | unsigned char *scan; | |
1365 | ||
1366 | scan = (unsigned char *) id; | |
1367 | { | |
1368 | int i = 4; | |
1369 | while (i--) | |
1370 | *scan++ = 0; | |
1371 | } | |
1372 | *scan++ = (value >> 24) & 0xff; | |
1373 | *scan++ = (value >> 16) & 0xff; | |
1374 | *scan++ = (value >> 8) & 0xff; | |
1375 | *scan++ = (value & 0xff); | |
1376 | } | |
1377 | ||
1378 | static int | |
fba45db2 | 1379 | threadref_to_int (threadref *ref) |
c906108c SS |
1380 | { |
1381 | int i, value = 0; | |
1382 | unsigned char *scan; | |
1383 | ||
1384 | scan = (char *) ref; | |
1385 | scan += 4; | |
1386 | i = 4; | |
1387 | while (i-- > 0) | |
1388 | value = (value << 8) | ((*scan++) & 0xff); | |
1389 | return value; | |
1390 | } | |
1391 | ||
1392 | static void | |
fba45db2 | 1393 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1394 | { |
1395 | int i; | |
1396 | unsigned char *csrc, *cdest; | |
1397 | ||
1398 | csrc = (unsigned char *) src; | |
1399 | cdest = (unsigned char *) dest; | |
1400 | i = 8; | |
1401 | while (i--) | |
1402 | *cdest++ = *csrc++; | |
1403 | } | |
1404 | ||
1405 | static int | |
fba45db2 | 1406 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1407 | { |
1408 | /* things are broken right now, so just assume we got a match */ | |
1409 | #if 0 | |
1410 | unsigned char *srcp, *destp; | |
1411 | int i, result; | |
1412 | srcp = (char *) src; | |
1413 | destp = (char *) dest; | |
1414 | ||
1415 | result = 1; | |
1416 | while (i-- > 0) | |
1417 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1418 | return result; | |
1419 | #endif | |
1420 | return 1; | |
1421 | } | |
1422 | ||
1423 | /* | |
c5aa993b JM |
1424 | threadid:1, # always request threadid |
1425 | context_exists:2, | |
1426 | display:4, | |
1427 | unique_name:8, | |
1428 | more_display:16 | |
1429 | */ | |
c906108c SS |
1430 | |
1431 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1432 | ||
1433 | static char * | |
fba45db2 | 1434 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1435 | { |
1436 | *pkt++ = 'q'; /* Info Query */ | |
1437 | *pkt++ = 'P'; /* process or thread info */ | |
1438 | pkt = pack_int (pkt, mode); /* mode */ | |
1439 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1440 | *pkt = '\0'; /* terminate */ | |
1441 | return pkt; | |
1442 | } | |
1443 | ||
1444 | /* These values tag the fields in a thread info response packet */ | |
1445 | /* Tagging the fields allows us to request specific fields and to | |
1446 | add more fields as time goes by */ | |
1447 | ||
c5aa993b JM |
1448 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1449 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1450 | fetch registers and its stack */ | |
1451 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1452 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1453 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1454 | the process */ | |
c906108c SS |
1455 | |
1456 | static int | |
fba45db2 KB |
1457 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1458 | struct gdb_ext_thread_info *info) | |
c906108c | 1459 | { |
d01949b6 | 1460 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1461 | int mask, length; |
1462 | unsigned int tag; | |
1463 | threadref ref; | |
d01949b6 | 1464 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1465 | int retval = 1; |
1466 | ||
1467 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1468 | info->active = 0; | |
1469 | info->display[0] = '\0'; | |
1470 | info->shortname[0] = '\0'; | |
1471 | info->more_display[0] = '\0'; | |
1472 | ||
1473 | /* Assume the characters indicating the packet type have been stripped */ | |
1474 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1475 | pkt = unpack_threadid (pkt, &ref); | |
1476 | ||
1477 | if (mask == 0) | |
1478 | warning ("Incomplete response to threadinfo request\n"); | |
1479 | if (!threadmatch (&ref, expectedref)) | |
1480 | { /* This is an answer to a different request */ | |
1481 | warning ("ERROR RMT Thread info mismatch\n"); | |
1482 | return 0; | |
1483 | } | |
1484 | copy_threadref (&info->threadid, &ref); | |
1485 | ||
1486 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1487 | ||
c5aa993b | 1488 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1489 | { |
1490 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1491 | pkt = unpack_byte (pkt, &length); /* length */ | |
1492 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1493 | { | |
1494 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1495 | retval = 0; | |
1496 | break; | |
1497 | } | |
1498 | if (tag == TAG_THREADID) | |
1499 | { | |
1500 | if (length != 16) | |
1501 | { | |
1502 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1503 | retval = 0; | |
1504 | break; | |
1505 | } | |
1506 | pkt = unpack_threadid (pkt, &ref); | |
1507 | mask = mask & ~TAG_THREADID; | |
1508 | continue; | |
1509 | } | |
1510 | if (tag == TAG_EXISTS) | |
1511 | { | |
1512 | info->active = stub_unpack_int (pkt, length); | |
1513 | pkt += length; | |
1514 | mask = mask & ~(TAG_EXISTS); | |
1515 | if (length > 8) | |
1516 | { | |
1517 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1518 | retval = 0; | |
1519 | break; | |
1520 | } | |
1521 | continue; | |
1522 | } | |
1523 | if (tag == TAG_THREADNAME) | |
1524 | { | |
1525 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1526 | mask = mask & ~TAG_THREADNAME; | |
1527 | continue; | |
1528 | } | |
1529 | if (tag == TAG_DISPLAY) | |
1530 | { | |
1531 | pkt = unpack_string (pkt, &info->display[0], length); | |
1532 | mask = mask & ~TAG_DISPLAY; | |
1533 | continue; | |
1534 | } | |
1535 | if (tag == TAG_MOREDISPLAY) | |
1536 | { | |
1537 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1538 | mask = mask & ~TAG_MOREDISPLAY; | |
1539 | continue; | |
1540 | } | |
1541 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1542 | break; /* Not a tag we know about */ | |
1543 | } | |
1544 | return retval; | |
1545 | } | |
1546 | ||
1547 | static int | |
fba45db2 KB |
1548 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1549 | struct gdb_ext_thread_info *info) | |
c906108c | 1550 | { |
d01949b6 | 1551 | struct remote_state *rs = get_remote_state (); |
c906108c | 1552 | int result; |
d01949b6 | 1553 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1554 | |
1555 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1556 | putpkt (threadinfo_pkt); | |
d01949b6 | 1557 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1558 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1559 | info); | |
1560 | return result; | |
1561 | } | |
1562 | ||
1563 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1564 | representation of a threadid. */ | |
1565 | ||
1566 | static int | |
fba45db2 KB |
1567 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1568 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1569 | { |
1570 | threadref lclref; | |
1571 | ||
1572 | int_to_threadref (&lclref, *ref); | |
1573 | return remote_get_threadinfo (&lclref, selection, info); | |
1574 | } | |
1575 | ||
1576 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1577 | ||
1578 | static char * | |
fba45db2 KB |
1579 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1580 | threadref *nextthread) | |
c906108c SS |
1581 | { |
1582 | *pkt++ = 'q'; /* info query packet */ | |
1583 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1584 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1585 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1586 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1587 | *pkt = '\0'; | |
1588 | return pkt; | |
1589 | } | |
1590 | ||
1591 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1592 | ||
1593 | static int | |
fba45db2 KB |
1594 | parse_threadlist_response (char *pkt, int result_limit, |
1595 | threadref *original_echo, threadref *resultlist, | |
1596 | int *doneflag) | |
c906108c | 1597 | { |
d01949b6 | 1598 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1599 | char *limit; |
1600 | int count, resultcount, done; | |
1601 | ||
1602 | resultcount = 0; | |
1603 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1604 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1605 | pkt = unpack_byte (pkt, &count); /* count field */ |
1606 | pkt = unpack_nibble (pkt, &done); | |
1607 | /* The first threadid is the argument threadid. */ | |
1608 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1609 | while ((count-- > 0) && (pkt < limit)) | |
1610 | { | |
1611 | pkt = unpack_threadid (pkt, resultlist++); | |
1612 | if (resultcount++ >= result_limit) | |
1613 | break; | |
1614 | } | |
1615 | if (doneflag) | |
1616 | *doneflag = done; | |
1617 | return resultcount; | |
1618 | } | |
1619 | ||
1620 | static int | |
fba45db2 KB |
1621 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1622 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1623 | { |
d01949b6 | 1624 | struct remote_state *rs = get_remote_state (); |
c906108c | 1625 | static threadref echo_nextthread; |
d01949b6 AC |
1626 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1627 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1628 | int result = 1; |
1629 | ||
1630 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1631 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1632 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1633 | |
1634 | pack_threadlist_request (threadlist_packet, | |
1635 | startflag, result_limit, nextthread); | |
1636 | putpkt (threadlist_packet); | |
d01949b6 | 1637 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1638 | |
1639 | *result_count = | |
1640 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1641 | threadlist, done); | |
1642 | ||
1643 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1644 | { | |
1645 | /* FIXME: This is a good reason to drop the packet */ | |
1646 | /* Possably, there is a duplicate response */ | |
1647 | /* Possabilities : | |
1648 | retransmit immediatly - race conditions | |
1649 | retransmit after timeout - yes | |
1650 | exit | |
1651 | wait for packet, then exit | |
1652 | */ | |
1653 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1654 | return 0; /* I choose simply exiting */ | |
1655 | } | |
1656 | if (*result_count <= 0) | |
1657 | { | |
1658 | if (*done != 1) | |
1659 | { | |
1660 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1661 | result = 0; | |
1662 | } | |
1663 | return result; /* break; */ | |
1664 | } | |
1665 | if (*result_count > result_limit) | |
1666 | { | |
1667 | *result_count = 0; | |
1668 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1669 | return 0; | |
1670 | } | |
1671 | return result; | |
1672 | } | |
1673 | ||
1674 | /* This is the interface between remote and threads, remotes upper interface */ | |
1675 | ||
1676 | /* remote_find_new_threads retrieves the thread list and for each | |
1677 | thread in the list, looks up the thread in GDB's internal list, | |
1678 | ading the thread if it does not already exist. This involves | |
1679 | getting partial thread lists from the remote target so, polling the | |
1680 | quit_flag is required. */ | |
1681 | ||
1682 | ||
1683 | /* About this many threadisds fit in a packet. */ | |
1684 | ||
1685 | #define MAXTHREADLISTRESULTS 32 | |
1686 | ||
1687 | static int | |
fba45db2 KB |
1688 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1689 | int looplimit) | |
c906108c SS |
1690 | { |
1691 | int done, i, result_count; | |
1692 | int startflag = 1; | |
1693 | int result = 1; | |
1694 | int loopcount = 0; | |
1695 | static threadref nextthread; | |
1696 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1697 | ||
1698 | done = 0; | |
1699 | while (!done) | |
1700 | { | |
1701 | if (loopcount++ > looplimit) | |
1702 | { | |
1703 | result = 0; | |
1704 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1705 | break; | |
1706 | } | |
1707 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1708 | &done, &result_count, resultthreadlist)) | |
1709 | { | |
1710 | result = 0; | |
1711 | break; | |
1712 | } | |
1713 | /* clear for later iterations */ | |
1714 | startflag = 0; | |
1715 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1716 | if (result_count >= 1) | |
1717 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1718 | i = 0; | |
1719 | while (result_count--) | |
1720 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1721 | break; | |
1722 | } | |
1723 | return result; | |
1724 | } | |
1725 | ||
1726 | static int | |
fba45db2 | 1727 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1728 | { |
39f77062 | 1729 | ptid_t ptid; |
c906108c | 1730 | |
39f77062 KB |
1731 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1732 | ||
1733 | if (!in_thread_list (ptid)) | |
1734 | add_thread (ptid); | |
c906108c SS |
1735 | return 1; /* continue iterator */ |
1736 | } | |
1737 | ||
1738 | #define CRAZY_MAX_THREADS 1000 | |
1739 | ||
39f77062 KB |
1740 | static ptid_t |
1741 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1742 | { |
d01949b6 AC |
1743 | struct remote_state *rs = get_remote_state (); |
1744 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1745 | |
1746 | putpkt ("qC"); | |
d01949b6 | 1747 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1748 | if (buf[0] == 'Q' && buf[1] == 'C') |
39f77062 | 1749 | return pid_to_ptid (strtol (&buf[2], NULL, 16)); |
c906108c SS |
1750 | else |
1751 | return oldpid; | |
1752 | } | |
1753 | ||
9d1f7ab2 MS |
1754 | /* Find new threads for info threads command. |
1755 | * Original version, using John Metzler's thread protocol. | |
1756 | */ | |
cce74817 JM |
1757 | |
1758 | static void | |
fba45db2 | 1759 | remote_find_new_threads (void) |
c906108c | 1760 | { |
c5aa993b JM |
1761 | remote_threadlist_iterator (remote_newthread_step, 0, |
1762 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1763 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1764 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1765 | } |
1766 | ||
9d1f7ab2 MS |
1767 | /* |
1768 | * Find all threads for info threads command. | |
1769 | * Uses new thread protocol contributed by Cisco. | |
1770 | * Falls back and attempts to use the older method (above) | |
1771 | * if the target doesn't respond to the new method. | |
1772 | */ | |
1773 | ||
0f71a2f6 JM |
1774 | static void |
1775 | remote_threads_info (void) | |
1776 | { | |
d01949b6 AC |
1777 | struct remote_state *rs = get_remote_state (); |
1778 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1779 | char *bufp; |
0f71a2f6 JM |
1780 | int tid; |
1781 | ||
1782 | if (remote_desc == 0) /* paranoia */ | |
1783 | error ("Command can only be used when connected to the remote target."); | |
1784 | ||
9d1f7ab2 MS |
1785 | if (use_threadinfo_query) |
1786 | { | |
1787 | putpkt ("qfThreadInfo"); | |
1788 | bufp = buf; | |
d01949b6 | 1789 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1790 | if (bufp[0] != '\0') /* q packet recognized */ |
1791 | { | |
1792 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1793 | { | |
1794 | do | |
1795 | { | |
1796 | tid = strtol (bufp, &bufp, 16); | |
39f77062 KB |
1797 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1798 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1799 | } |
1800 | while (*bufp++ == ','); /* comma-separated list */ | |
1801 | putpkt ("qsThreadInfo"); | |
1802 | bufp = buf; | |
d01949b6 | 1803 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1804 | } |
1805 | return; /* done */ | |
1806 | } | |
1807 | } | |
1808 | ||
1809 | /* Else fall back to old method based on jmetzler protocol. */ | |
1810 | use_threadinfo_query = 0; | |
1811 | remote_find_new_threads (); | |
1812 | return; | |
1813 | } | |
1814 | ||
1815 | /* | |
1816 | * Collect a descriptive string about the given thread. | |
1817 | * The target may say anything it wants to about the thread | |
1818 | * (typically info about its blocked / runnable state, name, etc.). | |
1819 | * This string will appear in the info threads display. | |
1820 | * | |
1821 | * Optional: targets are not required to implement this function. | |
1822 | */ | |
1823 | ||
1824 | static char * | |
1825 | remote_threads_extra_info (struct thread_info *tp) | |
1826 | { | |
d01949b6 | 1827 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1828 | int result; |
1829 | int set; | |
1830 | threadref id; | |
1831 | struct gdb_ext_thread_info threadinfo; | |
1832 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1833 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1834 | int n = 0; /* position in display_buf */ |
1835 | ||
1836 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1837 | internal_error (__FILE__, __LINE__, |
1838 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1839 | |
1840 | if (use_threadextra_query) | |
1841 | { | |
39f77062 | 1842 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1843 | putpkt (bufp); |
d01949b6 | 1844 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1845 | if (bufp[0] != 0) |
1846 | { | |
30559e10 MS |
1847 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1848 | result = hex2bin (bufp, display_buf, n); | |
1849 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1850 | return display_buf; |
1851 | } | |
0f71a2f6 | 1852 | } |
9d1f7ab2 MS |
1853 | |
1854 | /* If the above query fails, fall back to the old method. */ | |
1855 | use_threadextra_query = 0; | |
1856 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1857 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1858 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1859 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1860 | if (threadinfo.active) | |
0f71a2f6 | 1861 | { |
9d1f7ab2 MS |
1862 | if (*threadinfo.shortname) |
1863 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1864 | if (*threadinfo.display) | |
1865 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1866 | if (*threadinfo.more_display) | |
1867 | n += sprintf(&display_buf[n], " Priority: %s", | |
1868 | threadinfo.more_display); | |
1869 | ||
1870 | if (n > 0) | |
c5aa993b | 1871 | { |
9d1f7ab2 MS |
1872 | /* for purely cosmetic reasons, clear up trailing commas */ |
1873 | if (',' == display_buf[n-1]) | |
1874 | display_buf[n-1] = ' '; | |
1875 | return display_buf; | |
c5aa993b | 1876 | } |
0f71a2f6 | 1877 | } |
9d1f7ab2 | 1878 | return NULL; |
0f71a2f6 | 1879 | } |
9d1f7ab2 | 1880 | |
c906108c | 1881 | \f |
c5aa993b | 1882 | |
c906108c SS |
1883 | /* Restart the remote side; this is an extended protocol operation. */ |
1884 | ||
1885 | static void | |
fba45db2 | 1886 | extended_remote_restart (void) |
c906108c | 1887 | { |
d01949b6 AC |
1888 | struct remote_state *rs = get_remote_state (); |
1889 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1890 | |
1891 | /* Send the restart command; for reasons I don't understand the | |
1892 | remote side really expects a number after the "R". */ | |
1893 | buf[0] = 'R'; | |
1894 | sprintf (&buf[1], "%x", 0); | |
1895 | putpkt (buf); | |
1896 | ||
1897 | /* Now query for status so this looks just like we restarted | |
1898 | gdbserver from scratch. */ | |
1899 | putpkt ("?"); | |
d01949b6 | 1900 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1901 | } |
1902 | \f | |
1903 | /* Clean up connection to a remote debugger. */ | |
1904 | ||
1905 | /* ARGSUSED */ | |
1906 | static void | |
fba45db2 | 1907 | remote_close (int quitting) |
c906108c SS |
1908 | { |
1909 | if (remote_desc) | |
2cd58942 | 1910 | serial_close (remote_desc); |
c906108c SS |
1911 | remote_desc = NULL; |
1912 | } | |
1913 | ||
1914 | /* Query the remote side for the text, data and bss offsets. */ | |
1915 | ||
1916 | static void | |
fba45db2 | 1917 | get_offsets (void) |
c906108c | 1918 | { |
d01949b6 AC |
1919 | struct remote_state *rs = get_remote_state (); |
1920 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1921 | char *ptr; |
c906108c SS |
1922 | int lose; |
1923 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1924 | struct section_offsets *offs; | |
1925 | ||
1926 | putpkt ("qOffsets"); | |
1927 | ||
d01949b6 | 1928 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1929 | |
1930 | if (buf[0] == '\000') | |
1931 | return; /* Return silently. Stub doesn't support | |
1932 | this command. */ | |
1933 | if (buf[0] == 'E') | |
1934 | { | |
1935 | warning ("Remote failure reply: %s", buf); | |
1936 | return; | |
1937 | } | |
1938 | ||
1939 | /* Pick up each field in turn. This used to be done with scanf, but | |
1940 | scanf will make trouble if CORE_ADDR size doesn't match | |
1941 | conversion directives correctly. The following code will work | |
1942 | with any size of CORE_ADDR. */ | |
1943 | text_addr = data_addr = bss_addr = 0; | |
1944 | ptr = buf; | |
1945 | lose = 0; | |
1946 | ||
1947 | if (strncmp (ptr, "Text=", 5) == 0) | |
1948 | { | |
1949 | ptr += 5; | |
1950 | /* Don't use strtol, could lose on big values. */ | |
1951 | while (*ptr && *ptr != ';') | |
1952 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1953 | } | |
1954 | else | |
1955 | lose = 1; | |
1956 | ||
1957 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1958 | { | |
1959 | ptr += 6; | |
1960 | while (*ptr && *ptr != ';') | |
1961 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1962 | } | |
1963 | else | |
1964 | lose = 1; | |
1965 | ||
1966 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1967 | { | |
1968 | ptr += 5; | |
1969 | while (*ptr && *ptr != ';') | |
1970 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1971 | } | |
1972 | else | |
1973 | lose = 1; | |
1974 | ||
1975 | if (lose) | |
1976 | error ("Malformed response to offset query, %s", buf); | |
1977 | ||
1978 | if (symfile_objfile == NULL) | |
1979 | return; | |
1980 | ||
d4f3574e SS |
1981 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1982 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c | 1983 | |
a4c8257b | 1984 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1985 | |
1986 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1987 | because that's what nlmconv does now. The real solution requires changes | |
1988 | to the stub and remote.c that I don't have time to do right now. */ | |
1989 | ||
a4c8257b EZ |
1990 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1991 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1992 | |
1993 | objfile_relocate (symfile_objfile, offs); | |
1994 | } | |
1995 | ||
0f71a2f6 JM |
1996 | /* |
1997 | * Cisco version of section offsets: | |
1998 | * | |
1999 | * Instead of having GDB query the target for the section offsets, | |
2000 | * Cisco lets the target volunteer the information! It's also in | |
2001 | * a different format, so here are the functions that will decode | |
2002 | * a section offset packet from a Cisco target. | |
2003 | */ | |
2004 | ||
2005 | /* | |
2006 | * Function: remote_cisco_section_offsets | |
2007 | * | |
2008 | * Returns: zero for success, non-zero for failure | |
2009 | */ | |
2010 | ||
c5aa993b | 2011 | static int |
c2d11a7d JM |
2012 | remote_cisco_section_offsets (bfd_vma text_addr, |
2013 | bfd_vma data_addr, | |
2014 | bfd_vma bss_addr, | |
2015 | bfd_signed_vma *text_offs, | |
2016 | bfd_signed_vma *data_offs, | |
2017 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
2018 | { |
2019 | bfd_vma text_base, data_base, bss_base; | |
2020 | struct minimal_symbol *start; | |
2021 | asection *sect; | |
c5aa993b | 2022 | bfd *abfd; |
0f71a2f6 | 2023 | int len; |
0f71a2f6 JM |
2024 | |
2025 | if (symfile_objfile == NULL) | |
c5aa993b | 2026 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
2027 | |
2028 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
2029 | if (start == NULL) | |
c5aa993b | 2030 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
2031 | |
2032 | data_base = bss_base = 0; | |
2033 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
2034 | ||
2035 | abfd = symfile_objfile->obfd; | |
c5aa993b | 2036 | for (sect = abfd->sections; |
0f71a2f6 JM |
2037 | sect != 0; |
2038 | sect = sect->next) | |
2039 | { | |
ce359b09 | 2040 | const char *p = bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
2041 | len = strlen (p); |
2042 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
2043 | if (data_base == 0 || | |
2044 | data_base > bfd_get_section_vma (abfd, sect)) | |
2045 | data_base = bfd_get_section_vma (abfd, sect); | |
2046 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 2047 | if (bss_base == 0 || |
0f71a2f6 JM |
2048 | bss_base > bfd_get_section_vma (abfd, sect)) |
2049 | bss_base = bfd_get_section_vma (abfd, sect); | |
2050 | } | |
2051 | *text_offs = text_addr - text_base; | |
2052 | *data_offs = data_addr - data_base; | |
c5aa993b | 2053 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
2054 | if (remote_debug) |
2055 | { | |
2056 | char tmp[128]; | |
2057 | ||
2058 | sprintf (tmp, "VMA: text = 0x"); | |
2059 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 2060 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 2061 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 2062 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
2063 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
2064 | fprintf_filtered (gdb_stdlog, tmp); | |
2065 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
2066 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
2067 | paddr_nz (*text_offs), | |
2068 | paddr_nz (*data_offs), | |
2069 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
2070 | } |
2071 | ||
2072 | return 0; | |
2073 | } | |
2074 | ||
2075 | /* | |
2076 | * Function: remote_cisco_objfile_relocate | |
2077 | * | |
2078 | * Relocate the symbol file for a remote target. | |
2079 | */ | |
2080 | ||
96baa820 | 2081 | void |
fba45db2 KB |
2082 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
2083 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
2084 | { |
2085 | struct section_offsets *offs; | |
2086 | ||
c5aa993b | 2087 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2088 | { |
2089 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
2090 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
2091 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 2092 | |
d4f3574e SS |
2093 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
2094 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 | 2095 | |
a4c8257b EZ |
2096 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
2097 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
2098 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
2099 | |
2100 | /* First call the standard objfile_relocate. */ | |
2101 | objfile_relocate (symfile_objfile, offs); | |
2102 | ||
2103 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
2104 | the exec target. These entries will control memory transfers |
2105 | from the exec file. */ | |
0f71a2f6 JM |
2106 | |
2107 | exec_set_section_offsets (text_off, data_off, bss_off); | |
2108 | } | |
2109 | } | |
2110 | ||
c906108c SS |
2111 | /* Stub for catch_errors. */ |
2112 | ||
0f71a2f6 | 2113 | static int |
c2d11a7d | 2114 | remote_start_remote_dummy (void *dummy) |
0f71a2f6 JM |
2115 | { |
2116 | start_remote (); /* Initialize gdb process mechanisms */ | |
2117 | return 1; | |
2118 | } | |
2119 | ||
c906108c | 2120 | static int |
fba45db2 | 2121 | remote_start_remote (PTR dummy) |
c906108c | 2122 | { |
8edbea78 | 2123 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2124 | |
2125 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2126 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2127 | |
2128 | /* Let the stub know that we want it to return the thread. */ | |
2129 | set_thread (-1, 0); | |
2130 | ||
39f77062 | 2131 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2132 | |
2133 | get_offsets (); /* Get text, data & bss offsets */ | |
2134 | ||
2135 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2136 | immediate_quit--; |
c906108c | 2137 | |
0f71a2f6 | 2138 | return remote_start_remote_dummy (dummy); |
c906108c SS |
2139 | } |
2140 | ||
2141 | /* Open a connection to a remote debugger. | |
2142 | NAME is the filename used for communication. */ | |
2143 | ||
2144 | static void | |
fba45db2 | 2145 | remote_open (char *name, int from_tty) |
c906108c SS |
2146 | { |
2147 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
2148 | } | |
2149 | ||
43ff13b4 JM |
2150 | /* Just like remote_open, but with asynchronous support. */ |
2151 | static void | |
fba45db2 | 2152 | remote_async_open (char *name, int from_tty) |
43ff13b4 JM |
2153 | { |
2154 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
2155 | } | |
2156 | ||
c906108c SS |
2157 | /* Open a connection to a remote debugger using the extended |
2158 | remote gdb protocol. NAME is the filename used for communication. */ | |
2159 | ||
2160 | static void | |
fba45db2 | 2161 | extended_remote_open (char *name, int from_tty) |
c906108c | 2162 | { |
c5aa993b | 2163 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
2164 | } |
2165 | ||
43ff13b4 JM |
2166 | /* Just like extended_remote_open, but with asynchronous support. */ |
2167 | static void | |
fba45db2 | 2168 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2169 | { |
c5aa993b | 2170 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
2171 | } |
2172 | ||
c906108c SS |
2173 | /* Generic code for opening a connection to a remote target. */ |
2174 | ||
d471ea57 AC |
2175 | static void |
2176 | init_all_packet_configs (void) | |
2177 | { | |
2178 | int i; | |
44eaed12 C |
2179 | update_packet_config (&remote_protocol_e); |
2180 | update_packet_config (&remote_protocol_E); | |
d471ea57 | 2181 | update_packet_config (&remote_protocol_P); |
dc8acb97 | 2182 | update_packet_config (&remote_protocol_qSymbol); |
d471ea57 AC |
2183 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2184 | update_packet_config (&remote_protocol_Z[i]); | |
2185 | /* Force remote_write_bytes to check whether target supports binary | |
2186 | downloading. */ | |
2187 | update_packet_config (&remote_protocol_binary_download); | |
2188 | } | |
2189 | ||
dc8acb97 MS |
2190 | /* Symbol look-up. */ |
2191 | ||
2192 | static void | |
2193 | remote_check_symbols (struct objfile *objfile) | |
2194 | { | |
d01949b6 | 2195 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2196 | char *msg, *reply, *tmp; |
2197 | struct minimal_symbol *sym; | |
2198 | int end; | |
2199 | ||
2200 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2201 | return; | |
2202 | ||
d01949b6 AC |
2203 | msg = alloca (rs->remote_packet_size); |
2204 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2205 | |
2206 | /* Invite target to request symbol lookups. */ | |
2207 | ||
2208 | putpkt ("qSymbol::"); | |
d01949b6 | 2209 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2210 | packet_ok (reply, &remote_protocol_qSymbol); |
2211 | ||
2212 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2213 | { | |
2214 | tmp = &reply[8]; | |
2215 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2216 | msg[end] = '\0'; | |
2217 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2218 | if (sym == NULL) | |
2219 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2220 | else | |
2221 | sprintf (msg, "qSymbol:%s:%s", | |
2222 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
2223 | &reply[8]); | |
2224 | putpkt (msg); | |
d01949b6 | 2225 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2226 | } |
2227 | } | |
2228 | ||
c906108c | 2229 | static void |
fba45db2 KB |
2230 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
2231 | int extended_p) | |
c906108c | 2232 | { |
d01949b6 | 2233 | struct remote_state *rs = get_remote_state (); |
c906108c | 2234 | if (name == 0) |
22e04375 AC |
2235 | error ("To open a remote debug connection, you need to specify what\n" |
2236 | "serial device is attached to the remote system\n" | |
2237 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2238 | |
6426a772 JM |
2239 | /* See FIXME above */ |
2240 | wait_forever_enabled_p = 1; | |
2241 | ||
c906108c SS |
2242 | target_preopen (from_tty); |
2243 | ||
2244 | unpush_target (target); | |
2245 | ||
2cd58942 | 2246 | remote_desc = serial_open (name); |
c906108c SS |
2247 | if (!remote_desc) |
2248 | perror_with_name (name); | |
2249 | ||
2250 | if (baud_rate != -1) | |
2251 | { | |
2cd58942 | 2252 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2253 | { |
2cd58942 | 2254 | serial_close (remote_desc); |
c906108c SS |
2255 | perror_with_name (name); |
2256 | } | |
2257 | } | |
2258 | ||
2cd58942 | 2259 | serial_raw (remote_desc); |
c906108c SS |
2260 | |
2261 | /* If there is something sitting in the buffer we might take it as a | |
2262 | response to a command, which would be bad. */ | |
2cd58942 | 2263 | serial_flush_input (remote_desc); |
c906108c SS |
2264 | |
2265 | if (from_tty) | |
2266 | { | |
2267 | puts_filtered ("Remote debugging using "); | |
2268 | puts_filtered (name); | |
2269 | puts_filtered ("\n"); | |
2270 | } | |
c5aa993b | 2271 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2272 | |
d471ea57 | 2273 | init_all_packet_configs (); |
96baa820 | 2274 | |
c5aa993b | 2275 | general_thread = -2; |
cce74817 | 2276 | continue_thread = -2; |
c906108c | 2277 | |
9d1f7ab2 MS |
2278 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2279 | use_threadinfo_query = 1; | |
2280 | use_threadextra_query = 1; | |
2281 | ||
c906108c SS |
2282 | /* Without this, some commands which require an active target (such |
2283 | as kill) won't work. This variable serves (at least) double duty | |
2284 | as both the pid of the target process (if it has such), and as a | |
2285 | flag indicating that a target is active. These functions should | |
2286 | be split out into seperate variables, especially since GDB will | |
2287 | someday have a notion of debugging several processes. */ | |
2288 | ||
39f77062 | 2289 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
f78f6cf1 MS |
2290 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2291 | /* First delete any symbols previously loaded from shared libraries. */ | |
2292 | no_shared_libraries (NULL, 0); | |
2293 | #endif | |
2294 | ||
c906108c SS |
2295 | /* Start the remote connection; if error (0), discard this target. |
2296 | In particular, if the user quits, be sure to discard it | |
2297 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2298 | if (!catch_errors (remote_start_remote, NULL, |
2299 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
2300 | RETURN_MASK_ALL)) |
2301 | { | |
2302 | pop_target (); | |
2303 | return; | |
2304 | } | |
2305 | ||
2306 | if (extended_p) | |
2307 | { | |
6240bebf | 2308 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2309 | char *buf = alloca (rs->remote_packet_size); |
c906108c | 2310 | putpkt ("!"); |
d01949b6 | 2311 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 2312 | } |
f78f6cf1 | 2313 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2314 | /* FIXME: need a master target_open vector from which all |
2315 | remote_opens can be called, so that stuff like this can | |
2316 | go there. Failing that, the following code must be copied | |
2317 | to the open function for any remote target that wants to | |
2318 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2319 | |
2320 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2321 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2322 | { |
2323 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2324 | remote_check_symbols (symfile_objfile); | |
2325 | } | |
6240bebf | 2326 | #endif |
c906108c SS |
2327 | } |
2328 | ||
43ff13b4 JM |
2329 | /* Just like remote_open but with asynchronous support. */ |
2330 | static void | |
fba45db2 KB |
2331 | remote_async_open_1 (char *name, int from_tty, struct target_ops *target, |
2332 | int extended_p) | |
43ff13b4 | 2333 | { |
d01949b6 | 2334 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 2335 | if (name == 0) |
22e04375 AC |
2336 | error ("To open a remote debug connection, you need to specify what\n" |
2337 | "serial device is attached to the remote system\n" | |
2338 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
43ff13b4 JM |
2339 | |
2340 | target_preopen (from_tty); | |
2341 | ||
2342 | unpush_target (target); | |
2343 | ||
2cd58942 | 2344 | remote_desc = serial_open (name); |
43ff13b4 JM |
2345 | if (!remote_desc) |
2346 | perror_with_name (name); | |
2347 | ||
2348 | if (baud_rate != -1) | |
2349 | { | |
2cd58942 | 2350 | if (serial_setbaudrate (remote_desc, baud_rate)) |
43ff13b4 | 2351 | { |
2cd58942 | 2352 | serial_close (remote_desc); |
43ff13b4 JM |
2353 | perror_with_name (name); |
2354 | } | |
2355 | } | |
2356 | ||
2cd58942 | 2357 | serial_raw (remote_desc); |
43ff13b4 JM |
2358 | |
2359 | /* If there is something sitting in the buffer we might take it as a | |
2360 | response to a command, which would be bad. */ | |
2cd58942 | 2361 | serial_flush_input (remote_desc); |
43ff13b4 JM |
2362 | |
2363 | if (from_tty) | |
2364 | { | |
2365 | puts_filtered ("Remote debugging using "); | |
2366 | puts_filtered (name); | |
2367 | puts_filtered ("\n"); | |
2368 | } | |
2369 | ||
c5aa993b | 2370 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2371 | |
d471ea57 | 2372 | init_all_packet_configs (); |
43ff13b4 | 2373 | |
c5aa993b | 2374 | general_thread = -2; |
43ff13b4 JM |
2375 | continue_thread = -2; |
2376 | ||
9d1f7ab2 MS |
2377 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2378 | use_threadinfo_query = 1; | |
2379 | use_threadextra_query = 1; | |
2380 | ||
43ff13b4 JM |
2381 | /* Without this, some commands which require an active target (such |
2382 | as kill) won't work. This variable serves (at least) double duty | |
2383 | as both the pid of the target process (if it has such), and as a | |
2384 | flag indicating that a target is active. These functions should | |
2385 | be split out into seperate variables, especially since GDB will | |
2386 | someday have a notion of debugging several processes. */ | |
39f77062 | 2387 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
6426a772 JM |
2388 | |
2389 | /* With this target we start out by owning the terminal. */ | |
2390 | remote_async_terminal_ours_p = 1; | |
2391 | ||
2392 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2393 | assumed that the target is already ready and able to respond to | |
e26cc349 | 2394 | requests. Unfortunately remote_start_remote() eventually calls |
6426a772 JM |
2395 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
2396 | around this. Eventually a mechanism that allows | |
2397 | wait_for_inferior() to expect/get timeouts will be | |
2398 | implemented. */ | |
2399 | wait_forever_enabled_p = 0; | |
2400 | ||
f78f6cf1 MS |
2401 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2402 | /* First delete any symbols previously loaded from shared libraries. */ | |
2403 | no_shared_libraries (NULL, 0); | |
2404 | #endif | |
2405 | ||
43ff13b4 JM |
2406 | /* Start the remote connection; if error (0), discard this target. |
2407 | In particular, if the user quits, be sure to discard it | |
2408 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2409 | if (!catch_errors (remote_start_remote, NULL, |
2410 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2411 | RETURN_MASK_ALL)) |
2412 | { | |
43ff13b4 | 2413 | pop_target (); |
6426a772 | 2414 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
2415 | return; |
2416 | } | |
2417 | ||
6426a772 JM |
2418 | wait_forever_enabled_p = 1; |
2419 | ||
2420 | if (extended_p) | |
43ff13b4 | 2421 | { |
6240bebf | 2422 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2423 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2424 | putpkt ("!"); |
d01949b6 | 2425 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2426 | } |
f78f6cf1 | 2427 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2428 | /* FIXME: need a master target_open vector from which all |
2429 | remote_opens can be called, so that stuff like this can | |
2430 | go there. Failing that, the following code must be copied | |
2431 | to the open function for any remote target that wants to | |
2432 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2433 | |
2434 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2435 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2436 | { |
2437 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2438 | remote_check_symbols (symfile_objfile); | |
2439 | } | |
6240bebf | 2440 | #endif |
43ff13b4 JM |
2441 | } |
2442 | ||
c906108c SS |
2443 | /* This takes a program previously attached to and detaches it. After |
2444 | this is done, GDB can be used to debug some other program. We | |
2445 | better not have left any breakpoints in the target program or it'll | |
2446 | die when it hits one. */ | |
2447 | ||
2448 | static void | |
fba45db2 | 2449 | remote_detach (char *args, int from_tty) |
c906108c | 2450 | { |
d01949b6 AC |
2451 | struct remote_state *rs = get_remote_state (); |
2452 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2453 | |
2454 | if (args) | |
2455 | error ("Argument given to \"detach\" when remotely debugging."); | |
2456 | ||
2457 | /* Tell the remote target to detach. */ | |
2458 | strcpy (buf, "D"); | |
d01949b6 | 2459 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2460 | |
cca728d0 | 2461 | target_mourn_inferior (); |
c906108c SS |
2462 | if (from_tty) |
2463 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2464 | |
c906108c SS |
2465 | } |
2466 | ||
43ff13b4 JM |
2467 | /* Same as remote_detach, but with async support. */ |
2468 | static void | |
fba45db2 | 2469 | remote_async_detach (char *args, int from_tty) |
43ff13b4 | 2470 | { |
d01949b6 AC |
2471 | struct remote_state *rs = get_remote_state (); |
2472 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2473 | |
2474 | if (args) | |
2475 | error ("Argument given to \"detach\" when remotely debugging."); | |
2476 | ||
2477 | /* Tell the remote target to detach. */ | |
2478 | strcpy (buf, "D"); | |
d01949b6 | 2479 | remote_send (buf, (rs->remote_packet_size)); |
43ff13b4 JM |
2480 | |
2481 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 2482 | if (target_is_async_p ()) |
2cd58942 | 2483 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2484 | |
cca728d0 | 2485 | target_mourn_inferior (); |
43ff13b4 JM |
2486 | if (from_tty) |
2487 | puts_filtered ("Ending remote debugging.\n"); | |
2488 | } | |
2489 | ||
c906108c SS |
2490 | /* Convert hex digit A to a number. */ |
2491 | ||
30559e10 | 2492 | static int |
fba45db2 | 2493 | fromhex (int a) |
c906108c SS |
2494 | { |
2495 | if (a >= '0' && a <= '9') | |
2496 | return a - '0'; | |
2497 | else if (a >= 'a' && a <= 'f') | |
2498 | return a - 'a' + 10; | |
2499 | else if (a >= 'A' && a <= 'F') | |
2500 | return a - 'A' + 10; | |
c5aa993b | 2501 | else |
c906108c SS |
2502 | error ("Reply contains invalid hex digit %d", a); |
2503 | } | |
2504 | ||
30559e10 MS |
2505 | static int |
2506 | hex2bin (const char *hex, char *bin, int count) | |
2507 | { | |
2508 | int i; | |
2509 | ||
30559e10 MS |
2510 | for (i = 0; i < count; i++) |
2511 | { | |
2512 | if (hex[0] == 0 || hex[1] == 0) | |
2513 | { | |
2514 | /* Hex string is short, or of uneven length. | |
2515 | Return the count that has been converted so far. */ | |
2516 | return i; | |
2517 | } | |
2518 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2519 | hex += 2; | |
2520 | } | |
2521 | return i; | |
2522 | } | |
2523 | ||
c906108c SS |
2524 | /* Convert number NIB to a hex digit. */ |
2525 | ||
2526 | static int | |
fba45db2 | 2527 | tohex (int nib) |
c906108c SS |
2528 | { |
2529 | if (nib < 10) | |
c5aa993b | 2530 | return '0' + nib; |
c906108c | 2531 | else |
c5aa993b | 2532 | return 'a' + nib - 10; |
c906108c | 2533 | } |
30559e10 MS |
2534 | |
2535 | static int | |
234fa6d1 | 2536 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2537 | { |
2538 | int i; | |
2539 | /* May use a length, or a nul-terminated string as input. */ | |
2540 | if (count == 0) | |
2541 | count = strlen (bin); | |
2542 | ||
2543 | for (i = 0; i < count; i++) | |
2544 | { | |
2545 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2546 | *hex++ = tohex (*bin++ & 0xf); | |
2547 | } | |
2548 | *hex = 0; | |
2549 | return i; | |
2550 | } | |
c906108c SS |
2551 | \f |
2552 | /* Tell the remote machine to resume. */ | |
2553 | ||
2554 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2555 | ||
2556 | static int last_sent_step; | |
2557 | ||
2558 | static void | |
39f77062 | 2559 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
c906108c | 2560 | { |
d01949b6 AC |
2561 | struct remote_state *rs = get_remote_state (); |
2562 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2563 | int pid = PIDGET (ptid); |
44eaed12 | 2564 | char *p; |
c906108c SS |
2565 | |
2566 | if (pid == -1) | |
2567 | set_thread (0, 0); /* run any thread */ | |
2568 | else | |
2569 | set_thread (pid, 0); /* run this thread */ | |
2570 | ||
c906108c SS |
2571 | last_sent_signal = siggnal; |
2572 | last_sent_step = step; | |
2573 | ||
2574 | /* A hook for when we need to do something at the last moment before | |
2575 | resumption. */ | |
2576 | if (target_resume_hook) | |
2577 | (*target_resume_hook) (); | |
2578 | ||
44eaed12 C |
2579 | |
2580 | /* The s/S/c/C packets do not return status. So if the target does | |
2581 | not support the S or C packets, the debug agent returns an empty | |
2582 | string which is detected in remote_wait(). This protocol defect | |
2583 | is fixed in the e/E packets. */ | |
2584 | ||
2585 | if (step && step_range_end) | |
2586 | { | |
2587 | /* If the target does not support the 'E' packet, we try the 'S' | |
2588 | packet. Ideally we would fall back to the 'e' packet if that | |
2589 | too is not supported. But that would require another copy of | |
2590 | the code to issue the 'e' packet (and fall back to 's' if not | |
2591 | supported) in remote_wait(). */ | |
2592 | ||
2593 | if (siggnal != TARGET_SIGNAL_0) | |
2594 | { | |
2595 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2596 | { | |
2597 | p = buf; | |
2598 | *p++ = 'E'; | |
2599 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2600 | *p++ = tohex (((int) siggnal) & 0xf); | |
2601 | *p++ = ','; | |
2602 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2603 | *p++ = ','; | |
2604 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2605 | *p++ = 0; | |
2606 | ||
2607 | putpkt (buf); | |
d01949b6 | 2608 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2609 | |
234fa6d1 | 2610 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2611 | return; |
2612 | } | |
2613 | } | |
2614 | else | |
2615 | { | |
2616 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2617 | { | |
2618 | p = buf; | |
2619 | *p++ = 'e'; | |
2620 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2621 | *p++ = ','; | |
2622 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2623 | *p++ = 0; | |
2624 | ||
2625 | putpkt (buf); | |
d01949b6 | 2626 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2627 | |
234fa6d1 | 2628 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2629 | return; |
2630 | } | |
2631 | } | |
2632 | } | |
2633 | ||
c906108c SS |
2634 | if (siggnal != TARGET_SIGNAL_0) |
2635 | { | |
2636 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2637 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
44eaed12 | 2638 | buf[2] = tohex (((int) siggnal) & 0xf); |
c906108c SS |
2639 | buf[3] = '\0'; |
2640 | } | |
2641 | else | |
c5aa993b | 2642 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2643 | |
2644 | putpkt (buf); | |
2645 | } | |
43ff13b4 JM |
2646 | |
2647 | /* Same as remote_resume, but with async support. */ | |
2648 | static void | |
39f77062 | 2649 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2650 | { |
d01949b6 AC |
2651 | struct remote_state *rs = get_remote_state (); |
2652 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2653 | int pid = PIDGET (ptid); |
44eaed12 | 2654 | char *p; |
43ff13b4 JM |
2655 | |
2656 | if (pid == -1) | |
2657 | set_thread (0, 0); /* run any thread */ | |
2658 | else | |
2659 | set_thread (pid, 0); /* run this thread */ | |
2660 | ||
43ff13b4 JM |
2661 | last_sent_signal = siggnal; |
2662 | last_sent_step = step; | |
2663 | ||
2664 | /* A hook for when we need to do something at the last moment before | |
2665 | resumption. */ | |
2666 | if (target_resume_hook) | |
2667 | (*target_resume_hook) (); | |
2668 | ||
44eaed12 C |
2669 | /* The s/S/c/C packets do not return status. So if the target does |
2670 | not support the S or C packets, the debug agent returns an empty | |
2671 | string which is detected in remote_wait(). This protocol defect | |
2672 | is fixed in the e/E packets. */ | |
2673 | ||
2674 | if (step && step_range_end) | |
2675 | { | |
2676 | /* If the target does not support the 'E' packet, we try the 'S' | |
2677 | packet. Ideally we would fall back to the 'e' packet if that | |
2678 | too is not supported. But that would require another copy of | |
2679 | the code to issue the 'e' packet (and fall back to 's' if not | |
2680 | supported) in remote_wait(). */ | |
2681 | ||
2682 | if (siggnal != TARGET_SIGNAL_0) | |
2683 | { | |
2684 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2685 | { | |
2686 | p = buf; | |
2687 | *p++ = 'E'; | |
2688 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2689 | *p++ = tohex (((int) siggnal) & 0xf); | |
2690 | *p++ = ','; | |
2691 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2692 | *p++ = ','; | |
2693 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2694 | *p++ = 0; | |
2695 | ||
2696 | putpkt (buf); | |
d01949b6 | 2697 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2698 | |
234fa6d1 | 2699 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2700 | goto register_event_loop; |
2701 | } | |
2702 | } | |
2703 | else | |
2704 | { | |
2705 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2706 | { | |
2707 | p = buf; | |
2708 | *p++ = 'e'; | |
2709 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2710 | *p++ = ','; | |
2711 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2712 | *p++ = 0; | |
2713 | ||
2714 | putpkt (buf); | |
d01949b6 | 2715 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2716 | |
234fa6d1 | 2717 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2718 | goto register_event_loop; |
2719 | } | |
2720 | } | |
2721 | } | |
2722 | ||
43ff13b4 JM |
2723 | if (siggnal != TARGET_SIGNAL_0) |
2724 | { | |
2725 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2726 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2727 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2728 | buf[3] = '\0'; |
2729 | } | |
2730 | else | |
c5aa993b | 2731 | strcpy (buf, step ? "s" : "c"); |
44eaed12 C |
2732 | |
2733 | putpkt (buf); | |
43ff13b4 | 2734 | |
44eaed12 | 2735 | register_event_loop: |
2acceee2 JM |
2736 | /* We are about to start executing the inferior, let's register it |
2737 | with the event loop. NOTE: this is the one place where all the | |
2738 | execution commands end up. We could alternatively do this in each | |
2739 | of the execution commands in infcmd.c.*/ | |
2740 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2741 | into infcmd.c in order to allow inferior function calls to work | |
2742 | NOT asynchronously. */ | |
ed9a39eb | 2743 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2744 | target_async (inferior_event_handler, 0); |
2745 | /* Tell the world that the target is now executing. */ | |
2746 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2747 | this? Instead, should the client of target just assume (for | |
2748 | async targets) that the target is going to start executing? Is | |
2749 | this information already found in the continuation block? */ | |
ed9a39eb | 2750 | if (target_is_async_p ()) |
2acceee2 | 2751 | target_executing = 1; |
43ff13b4 | 2752 | } |
c906108c | 2753 | \f |
43ff13b4 JM |
2754 | |
2755 | /* Set up the signal handler for SIGINT, while the target is | |
2756 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2757 | static void | |
fba45db2 | 2758 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2759 | { |
c5aa993b | 2760 | sigint_remote_token = |
43ff13b4 JM |
2761 | create_async_signal_handler (async_remote_interrupt, NULL); |
2762 | signal (SIGINT, handle_remote_sigint); | |
2763 | } | |
2764 | ||
2765 | /* Signal handler for SIGINT, while the target is executing. */ | |
2766 | static void | |
fba45db2 | 2767 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2768 | { |
2769 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2770 | sigint_remote_twice_token = |
43ff13b4 JM |
2771 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2772 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2773 | } | |
2774 | ||
2775 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2776 | sent once. It will take effect the second time that the user sends | |
2777 | a ^C. */ | |
2778 | static void | |
fba45db2 | 2779 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2780 | { |
2781 | signal (sig, handle_sigint); | |
c5aa993b | 2782 | sigint_remote_twice_token = |
2df3850c | 2783 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2784 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2785 | } | |
2786 | ||
6426a772 | 2787 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2788 | to a ^C. */ |
c5aa993b | 2789 | static void |
fba45db2 | 2790 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2791 | { |
2792 | if (remote_debug) | |
2793 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2794 | ||
2795 | target_stop (); | |
2796 | } | |
2797 | ||
2798 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2799 | up on the target alltogether. */ | |
2df3850c | 2800 | void |
fba45db2 | 2801 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2802 | { |
2df3850c JM |
2803 | if (remote_debug) |
2804 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2805 | /* Do something only if the target was not killed by the previous |
2806 | cntl-C. */ | |
2807 | if (target_executing) | |
2808 | { | |
2809 | interrupt_query (); | |
2810 | signal (SIGINT, handle_remote_sigint); | |
2811 | } | |
43ff13b4 JM |
2812 | } |
2813 | ||
2814 | /* Reinstall the usual SIGINT handlers, after the target has | |
2815 | stopped. */ | |
6426a772 JM |
2816 | static void |
2817 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2818 | { |
2819 | signal (SIGINT, handle_sigint); | |
2820 | if (sigint_remote_twice_token) | |
c2c6d25f | 2821 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2822 | if (sigint_remote_token) |
c2c6d25f | 2823 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2824 | } |
2825 | ||
c906108c SS |
2826 | /* Send ^C to target to halt it. Target will respond, and send us a |
2827 | packet. */ | |
507f3c78 | 2828 | static void (*ofunc) (int); |
c906108c | 2829 | |
7a292a7a SS |
2830 | /* The command line interface's stop routine. This function is installed |
2831 | as a signal handler for SIGINT. The first time a user requests a | |
2832 | stop, we call remote_stop to send a break or ^C. If there is no | |
2833 | response from the target (it didn't stop when the user requested it), | |
2834 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2835 | static void |
fba45db2 | 2836 | remote_interrupt (int signo) |
c906108c | 2837 | { |
7a292a7a SS |
2838 | /* If this doesn't work, try more severe steps. */ |
2839 | signal (signo, remote_interrupt_twice); | |
2840 | ||
2841 | if (remote_debug) | |
0f71a2f6 | 2842 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2843 | |
2844 | target_stop (); | |
2845 | } | |
2846 | ||
2847 | /* The user typed ^C twice. */ | |
2848 | ||
2849 | static void | |
fba45db2 | 2850 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2851 | { |
2852 | signal (signo, ofunc); | |
2853 | interrupt_query (); | |
c906108c SS |
2854 | signal (signo, remote_interrupt); |
2855 | } | |
7a292a7a SS |
2856 | |
2857 | /* This is the generic stop called via the target vector. When a target | |
2858 | interrupt is requested, either by the command line or the GUI, we | |
2859 | will eventually end up here. */ | |
c906108c | 2860 | static void |
fba45db2 | 2861 | remote_stop (void) |
c906108c | 2862 | { |
7a292a7a SS |
2863 | /* Send a break or a ^C, depending on user preference. */ |
2864 | if (remote_debug) | |
0f71a2f6 | 2865 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2866 | |
7a292a7a | 2867 | if (remote_break) |
2cd58942 | 2868 | serial_send_break (remote_desc); |
c906108c | 2869 | else |
2cd58942 | 2870 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2871 | } |
2872 | ||
2873 | /* Ask the user what to do when an interrupt is received. */ | |
2874 | ||
2875 | static void | |
fba45db2 | 2876 | interrupt_query (void) |
c906108c SS |
2877 | { |
2878 | target_terminal_ours (); | |
2879 | ||
2880 | if (query ("Interrupted while waiting for the program.\n\ | |
2881 | Give up (and stop debugging it)? ")) | |
2882 | { | |
2883 | target_mourn_inferior (); | |
2884 | return_to_top_level (RETURN_QUIT); | |
2885 | } | |
2886 | ||
2887 | target_terminal_inferior (); | |
2888 | } | |
2889 | ||
6426a772 JM |
2890 | /* Enable/disable target terminal ownership. Most targets can use |
2891 | terminal groups to control terminal ownership. Remote targets are | |
2892 | different in that explicit transfer of ownership to/from GDB/target | |
2893 | is required. */ | |
2894 | ||
2895 | static void | |
2896 | remote_async_terminal_inferior (void) | |
2897 | { | |
2898 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2899 | sync_execution here. This function should only be called when | |
2900 | GDB is resuming the inferior in the forground. A background | |
2901 | resume (``run&'') should leave GDB in control of the terminal and | |
2902 | consequently should not call this code. */ | |
2903 | if (!sync_execution) | |
2904 | return; | |
2905 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2906 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2907 | to an asynchronous target with a synchronous command calls this | |
2908 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2909 | stops trying to transfer the terminal to the target when it | |
2910 | shouldn't this guard can go away. */ | |
2911 | if (!remote_async_terminal_ours_p) | |
2912 | return; | |
2913 | delete_file_handler (input_fd); | |
2914 | remote_async_terminal_ours_p = 0; | |
2915 | initialize_sigint_signal_handler (); | |
2916 | /* NOTE: At this point we could also register our selves as the | |
2917 | recipient of all input. Any characters typed could then be | |
2918 | passed on down to the target. */ | |
2919 | } | |
2920 | ||
2921 | static void | |
2922 | remote_async_terminal_ours (void) | |
2923 | { | |
2924 | /* See FIXME in remote_async_terminal_inferior. */ | |
2925 | if (!sync_execution) | |
2926 | return; | |
2927 | /* See FIXME in remote_async_terminal_inferior. */ | |
2928 | if (remote_async_terminal_ours_p) | |
2929 | return; | |
2930 | cleanup_sigint_signal_handler (NULL); | |
2931 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2932 | remote_async_terminal_ours_p = 1; | |
2933 | } | |
2934 | ||
c906108c SS |
2935 | /* If nonzero, ignore the next kill. */ |
2936 | ||
2937 | int kill_kludge; | |
2938 | ||
2939 | void | |
917317f4 | 2940 | remote_console_output (char *msg) |
c906108c SS |
2941 | { |
2942 | char *p; | |
2943 | ||
c5aa993b | 2944 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2945 | { |
2946 | char tb[2]; | |
2947 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2948 | tb[0] = c; | |
2949 | tb[1] = 0; | |
43ff13b4 | 2950 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2951 | } |
917317f4 | 2952 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2953 | } |
2954 | ||
0f71a2f6 JM |
2955 | /* Wait until the remote machine stops, then return, |
2956 | storing status in STATUS just as `wait' would. | |
2957 | Returns "pid", which in the case of a multi-threaded | |
2958 | remote OS, is the thread-id. */ | |
c906108c | 2959 | |
39f77062 KB |
2960 | static ptid_t |
2961 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2962 | { |
d01949b6 AC |
2963 | struct remote_state *rs = get_remote_state (); |
2964 | unsigned char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2965 | int thread_num = -1; |
2966 | ||
2967 | status->kind = TARGET_WAITKIND_EXITED; | |
2968 | status->value.integer = 0; | |
2969 | ||
2970 | while (1) | |
2971 | { | |
2972 | unsigned char *p; | |
2973 | ||
c906108c | 2974 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2975 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2976 | signal (SIGINT, ofunc); |
2977 | ||
2978 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2979 | collection of trace data) every time the target stops. */ |
c906108c SS |
2980 | if (target_wait_loop_hook) |
2981 | (*target_wait_loop_hook) (); | |
2982 | ||
2983 | switch (buf[0]) | |
2984 | { | |
2985 | case 'E': /* Error of some sort */ | |
2986 | warning ("Remote failure reply: %s", buf); | |
2987 | continue; | |
2988 | case 'T': /* Status with PC, SP, FP, ... */ | |
2989 | { | |
2990 | int i; | |
e6cbd02a | 2991 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
c906108c SS |
2992 | |
2993 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2994 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2995 | ss = signal number |
2996 | n... = register number | |
2997 | r... = register contents | |
2998 | */ | |
c906108c SS |
2999 | p = &buf[3]; /* after Txx */ |
3000 | ||
3001 | while (*p) | |
3002 | { | |
3003 | unsigned char *p1; | |
3004 | char *p_temp; | |
97345198 | 3005 | int fieldsize; |
c906108c | 3006 | |
ad10f812 AC |
3007 | /* Read the ``P'' register number. */ |
3008 | LONGEST pnum = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 3009 | p1 = (unsigned char *) p_temp; |
c906108c | 3010 | |
c5aa993b | 3011 | if (p1 == p) /* No register number present here */ |
c906108c SS |
3012 | { |
3013 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
3014 | if (p1 == NULL) | |
3015 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3016 | Packet: '%s'\n", | |
3017 | p, buf); | |
3018 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
3019 | { | |
3020 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3021 | record_currthread (thread_num); | |
3022 | p = (unsigned char *) p_temp; | |
3023 | } | |
3024 | } | |
3025 | else | |
3026 | { | |
ad10f812 | 3027 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
3028 | p = p1; |
3029 | ||
3030 | if (*p++ != ':') | |
3031 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3032 | Packet: '%s'\n", | |
3033 | p, buf); | |
3034 | ||
ad10f812 AC |
3035 | if (reg == NULL) |
3036 | warning ("Remote sent bad register number %s: %s\n\ | |
c906108c | 3037 | Packet: '%s'\n", |
ad10f812 | 3038 | phex_nz (pnum, 0), p, buf); |
c906108c | 3039 | |
ad10f812 | 3040 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum)); |
97345198 | 3041 | p += 2 * fieldsize; |
ad10f812 | 3042 | if (fieldsize < REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3043 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3044 | supply_register (reg->regnum, regs); |
c906108c SS |
3045 | } |
3046 | ||
3047 | if (*p++ != ';') | |
3048 | { | |
3049 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3050 | warning (" here: %s", p); |
c906108c SS |
3051 | } |
3052 | } | |
3053 | } | |
3054 | /* fall through */ | |
3055 | case 'S': /* Old style status, just signal only */ | |
3056 | status->kind = TARGET_WAITKIND_STOPPED; | |
3057 | status->value.sig = (enum target_signal) | |
3058 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3059 | ||
0f71a2f6 JM |
3060 | if (buf[3] == 'p') |
3061 | { | |
3062 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3063 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3064 | |
3065 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3066 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3067 | value_from_string ("PDEBUG-")); |
3068 | cisco_kernel_mode = 0; | |
3069 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3070 | record_currthread (thread_num); | |
3071 | } | |
3072 | else if (buf[3] == 'k') | |
3073 | { | |
3074 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3075 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3076 | |
3077 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3078 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3079 | value_from_string ("KDEBUG-")); |
3080 | cisco_kernel_mode = 1; | |
3081 | } | |
c906108c | 3082 | goto got_status; |
0f71a2f6 JM |
3083 | case 'N': /* Cisco special: status and offsets */ |
3084 | { | |
3085 | bfd_vma text_addr, data_addr, bss_addr; | |
3086 | bfd_signed_vma text_off, data_off, bss_off; | |
3087 | unsigned char *p1; | |
3088 | ||
3089 | status->kind = TARGET_WAITKIND_STOPPED; | |
3090 | status->value.sig = (enum target_signal) | |
3091 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3092 | ||
c5aa993b | 3093 | if (symfile_objfile == NULL) |
0f71a2f6 | 3094 | { |
d4f3574e | 3095 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
3096 | Packet Dropped"); |
3097 | goto got_status; | |
3098 | } | |
3099 | ||
3100 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3101 | * where AA is the signal number, TT is the new text | |
3102 | * address, DD * is the new data address, and BB is the | |
3103 | * new bss address. */ | |
3104 | ||
3105 | p = &buf[3]; | |
3106 | text_addr = strtoul (p, (char **) &p1, 16); | |
3107 | if (p1 == p || *p1 != ';') | |
3108 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3109 | p = p1 + 1; | |
3110 | data_addr = strtoul (p, (char **) &p1, 16); | |
3111 | if (p1 == p || *p1 != ';') | |
3112 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3113 | p = p1 + 1; | |
3114 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3115 | if (p1 == p) |
0f71a2f6 JM |
3116 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3117 | ||
3118 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3119 | &text_off, &data_off, &bss_off) | |
3120 | == 0) | |
c5aa993b | 3121 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
3122 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3123 | ||
3124 | goto got_status; | |
3125 | } | |
c906108c SS |
3126 | case 'W': /* Target exited */ |
3127 | { | |
3128 | /* The remote process exited. */ | |
3129 | status->kind = TARGET_WAITKIND_EXITED; | |
3130 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3131 | goto got_status; | |
3132 | } | |
3133 | case 'X': | |
3134 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3135 | status->value.sig = (enum target_signal) | |
3136 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3137 | kill_kludge = 1; | |
3138 | ||
3139 | goto got_status; | |
3140 | case 'O': /* Console output */ | |
3141 | remote_console_output (buf + 1); | |
3142 | continue; | |
3143 | case '\0': | |
3144 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3145 | { | |
3146 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3147 | the remote system doesn't support it. */ |
c906108c SS |
3148 | target_terminal_ours_for_output (); |
3149 | printf_filtered | |
3150 | ("Can't send signals to this remote system. %s not sent.\n", | |
3151 | target_signal_to_name (last_sent_signal)); | |
3152 | last_sent_signal = TARGET_SIGNAL_0; | |
3153 | target_terminal_inferior (); | |
3154 | ||
3155 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3156 | putpkt ((char *) buf); | |
3157 | continue; | |
3158 | } | |
3159 | /* else fallthrough */ | |
3160 | default: | |
3161 | warning ("Invalid remote reply: %s", buf); | |
3162 | continue; | |
3163 | } | |
3164 | } | |
c5aa993b | 3165 | got_status: |
c906108c SS |
3166 | if (thread_num != -1) |
3167 | { | |
39f77062 | 3168 | return pid_to_ptid (thread_num); |
c906108c | 3169 | } |
39f77062 | 3170 | return inferior_ptid; |
c906108c SS |
3171 | } |
3172 | ||
43ff13b4 | 3173 | /* Async version of remote_wait. */ |
39f77062 KB |
3174 | static ptid_t |
3175 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3176 | { |
d01949b6 AC |
3177 | struct remote_state *rs = get_remote_state (); |
3178 | unsigned char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
3179 | int thread_num = -1; |
3180 | ||
3181 | status->kind = TARGET_WAITKIND_EXITED; | |
3182 | status->value.integer = 0; | |
3183 | ||
3184 | while (1) | |
3185 | { | |
3186 | unsigned char *p; | |
c5aa993b | 3187 | |
ed9a39eb | 3188 | if (!target_is_async_p ()) |
43ff13b4 | 3189 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3190 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3191 | _never_ wait for ever -> test on target_is_async_p(). | |
3192 | However, before we do that we need to ensure that the caller | |
3193 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 3194 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3195 | if (!target_is_async_p ()) |
43ff13b4 JM |
3196 | signal (SIGINT, ofunc); |
3197 | ||
3198 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3199 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
3200 | if (target_wait_loop_hook) |
3201 | (*target_wait_loop_hook) (); | |
3202 | ||
3203 | switch (buf[0]) | |
3204 | { | |
3205 | case 'E': /* Error of some sort */ | |
3206 | warning ("Remote failure reply: %s", buf); | |
3207 | continue; | |
3208 | case 'T': /* Status with PC, SP, FP, ... */ | |
3209 | { | |
3210 | int i; | |
e6cbd02a | 3211 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
43ff13b4 JM |
3212 | |
3213 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3214 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3215 | ss = signal number |
3216 | n... = register number | |
3217 | r... = register contents | |
3218 | */ | |
43ff13b4 JM |
3219 | p = &buf[3]; /* after Txx */ |
3220 | ||
3221 | while (*p) | |
3222 | { | |
3223 | unsigned char *p1; | |
3224 | char *p_temp; | |
6c3f2dbf | 3225 | int fieldsize; |
43ff13b4 JM |
3226 | |
3227 | /* Read the register number */ | |
ad10f812 | 3228 | long pnum = strtol ((const char *) p, &p_temp, 16); |
c5aa993b | 3229 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 3230 | |
c5aa993b | 3231 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
3232 | { |
3233 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
3234 | if (p1 == NULL) | |
3235 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3236 | Packet: '%s'\n", | |
3237 | p, buf); | |
3238 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
3239 | { | |
3240 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3241 | record_currthread (thread_num); | |
3242 | p = (unsigned char *) p_temp; | |
3243 | } | |
3244 | } | |
3245 | else | |
3246 | { | |
ad10f812 | 3247 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3248 | p = p1; |
43ff13b4 JM |
3249 | if (*p++ != ':') |
3250 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3251 | Packet: '%s'\n", | |
3252 | p, buf); | |
3253 | ||
ad10f812 | 3254 | if (reg == NULL) |
43ff13b4 JM |
3255 | warning ("Remote sent bad register number %ld: %s\n\ |
3256 | Packet: '%s'\n", | |
ad10f812 | 3257 | pnum, p, buf); |
43ff13b4 | 3258 | |
ad10f812 | 3259 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum)); |
6c3f2dbf | 3260 | p += 2 * fieldsize; |
ad10f812 | 3261 | if (fieldsize < REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3262 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3263 | supply_register (reg->regnum, regs); |
43ff13b4 JM |
3264 | } |
3265 | ||
3266 | if (*p++ != ';') | |
3267 | { | |
3268 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3269 | warning (" here: %s", p); |
43ff13b4 JM |
3270 | } |
3271 | } | |
3272 | } | |
3273 | /* fall through */ | |
3274 | case 'S': /* Old style status, just signal only */ | |
3275 | status->kind = TARGET_WAITKIND_STOPPED; | |
3276 | status->value.sig = (enum target_signal) | |
3277 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3278 | ||
3279 | if (buf[3] == 'p') | |
3280 | { | |
3281 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3282 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3283 | |
3284 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3285 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3286 | value_from_string ("PDEBUG-")); |
3287 | cisco_kernel_mode = 0; | |
3288 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3289 | record_currthread (thread_num); | |
3290 | } | |
3291 | else if (buf[3] == 'k') | |
3292 | { | |
3293 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3294 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3295 | |
3296 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3297 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3298 | value_from_string ("KDEBUG-")); |
3299 | cisco_kernel_mode = 1; | |
3300 | } | |
3301 | goto got_status; | |
3302 | case 'N': /* Cisco special: status and offsets */ | |
3303 | { | |
3304 | bfd_vma text_addr, data_addr, bss_addr; | |
3305 | bfd_signed_vma text_off, data_off, bss_off; | |
3306 | unsigned char *p1; | |
3307 | ||
3308 | status->kind = TARGET_WAITKIND_STOPPED; | |
3309 | status->value.sig = (enum target_signal) | |
3310 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3311 | ||
c5aa993b | 3312 | if (symfile_objfile == NULL) |
43ff13b4 JM |
3313 | { |
3314 | warning ("Relocation packet recieved with no symbol file. \ | |
3315 | Packet Dropped"); | |
3316 | goto got_status; | |
3317 | } | |
3318 | ||
3319 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3320 | * where AA is the signal number, TT is the new text | |
3321 | * address, DD * is the new data address, and BB is the | |
3322 | * new bss address. */ | |
3323 | ||
3324 | p = &buf[3]; | |
3325 | text_addr = strtoul (p, (char **) &p1, 16); | |
3326 | if (p1 == p || *p1 != ';') | |
3327 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3328 | p = p1 + 1; | |
3329 | data_addr = strtoul (p, (char **) &p1, 16); | |
3330 | if (p1 == p || *p1 != ';') | |
3331 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3332 | p = p1 + 1; | |
3333 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3334 | if (p1 == p) |
43ff13b4 JM |
3335 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3336 | ||
3337 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3338 | &text_off, &data_off, &bss_off) | |
3339 | == 0) | |
c5aa993b | 3340 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
3341 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3342 | ||
3343 | goto got_status; | |
3344 | } | |
3345 | case 'W': /* Target exited */ | |
3346 | { | |
3347 | /* The remote process exited. */ | |
3348 | status->kind = TARGET_WAITKIND_EXITED; | |
3349 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3350 | goto got_status; | |
3351 | } | |
3352 | case 'X': | |
3353 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3354 | status->value.sig = (enum target_signal) | |
3355 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3356 | kill_kludge = 1; | |
3357 | ||
3358 | goto got_status; | |
3359 | case 'O': /* Console output */ | |
3360 | remote_console_output (buf + 1); | |
c4093a6a JM |
3361 | /* Return immediately to the event loop. The event loop will |
3362 | still be waiting on the inferior afterwards. */ | |
3363 | status->kind = TARGET_WAITKIND_IGNORE; | |
3364 | goto got_status; | |
43ff13b4 JM |
3365 | case '\0': |
3366 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3367 | { | |
3368 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3369 | the remote system doesn't support it. */ |
43ff13b4 JM |
3370 | target_terminal_ours_for_output (); |
3371 | printf_filtered | |
3372 | ("Can't send signals to this remote system. %s not sent.\n", | |
3373 | target_signal_to_name (last_sent_signal)); | |
3374 | last_sent_signal = TARGET_SIGNAL_0; | |
3375 | target_terminal_inferior (); | |
3376 | ||
3377 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3378 | putpkt ((char *) buf); | |
3379 | continue; | |
3380 | } | |
3381 | /* else fallthrough */ | |
3382 | default: | |
3383 | warning ("Invalid remote reply: %s", buf); | |
3384 | continue; | |
3385 | } | |
3386 | } | |
c5aa993b | 3387 | got_status: |
43ff13b4 JM |
3388 | if (thread_num != -1) |
3389 | { | |
39f77062 | 3390 | return pid_to_ptid (thread_num); |
43ff13b4 | 3391 | } |
39f77062 | 3392 | return inferior_ptid; |
43ff13b4 JM |
3393 | } |
3394 | ||
c906108c SS |
3395 | /* Number of bytes of registers this stub implements. */ |
3396 | ||
3397 | static int register_bytes_found; | |
3398 | ||
3399 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3400 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c SS |
3401 | |
3402 | /* ARGSUSED */ | |
3403 | static void | |
ad10f812 | 3404 | remote_fetch_registers (int regnum) |
c906108c | 3405 | { |
d01949b6 AC |
3406 | struct remote_state *rs = get_remote_state (); |
3407 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3408 | int i; |
3409 | char *p; | |
ad10f812 | 3410 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3411 | |
39f77062 | 3412 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3413 | |
b323314b AC |
3414 | if (regnum >= 0) |
3415 | { | |
3416 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3417 | gdb_assert (reg != NULL); | |
3418 | if (!reg->in_g_packet) | |
3419 | internal_error (__FILE__, __LINE__, | |
3420 | "Attempt to fetch a non G-packet register when this " | |
3421 | "remote.c does not support the p-packet."); | |
3422 | } | |
3423 | ||
c906108c | 3424 | sprintf (buf, "g"); |
d01949b6 | 3425 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3426 | |
11cf8741 JM |
3427 | /* Save the size of the packet sent to us by the target. Its used |
3428 | as a heuristic when determining the max size of packets that the | |
3429 | target can safely receive. */ | |
d01949b6 AC |
3430 | if ((rs->actual_register_packet_size) == 0) |
3431 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3432 | |
3433 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3434 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3435 | |
3436 | /* We can get out of synch in various cases. If the first character | |
3437 | in the buffer is not a hex character, assume that has happened | |
3438 | and try to fetch another packet to read. */ | |
3439 | while ((buf[0] < '0' || buf[0] > '9') | |
3440 | && (buf[0] < 'a' || buf[0] > 'f') | |
3441 | && buf[0] != 'x') /* New: unavailable register value */ | |
3442 | { | |
3443 | if (remote_debug) | |
0f71a2f6 JM |
3444 | fprintf_unfiltered (gdb_stdlog, |
3445 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3446 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3447 | } |
3448 | ||
3449 | /* Reply describes registers byte by byte, each byte encoded as two | |
3450 | hex characters. Suck them all up, then supply them to the | |
3451 | register cacheing/storage mechanism. */ | |
3452 | ||
3453 | p = buf; | |
ad10f812 | 3454 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3455 | { |
3456 | if (p[0] == 0) | |
3457 | break; | |
3458 | if (p[1] == 0) | |
3459 | { | |
3460 | warning ("Remote reply is of odd length: %s", buf); | |
3461 | /* Don't change register_bytes_found in this case, and don't | |
3462 | print a second warning. */ | |
3463 | goto supply_them; | |
3464 | } | |
3465 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3466 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3467 | else |
3468 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3469 | p += 2; | |
3470 | } | |
3471 | ||
3472 | if (i != register_bytes_found) | |
3473 | { | |
3474 | register_bytes_found = i; | |
2649061d AC |
3475 | if (REGISTER_BYTES_OK_P () |
3476 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3477 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3478 | } |
c5aa993b | 3479 | |
b323314b | 3480 | supply_them: |
ad10f812 | 3481 | { |
b323314b AC |
3482 | int i; |
3483 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3484 | { |
b323314b AC |
3485 | struct packet_reg *r = &rs->regs[i]; |
3486 | if (r->in_g_packet) | |
3487 | { | |
3488 | supply_register (r->regnum, regs + r->offset); | |
3489 | if (buf[r->offset * 2] == 'x') | |
3490 | set_register_cached (i, -1); | |
3491 | } | |
ad10f812 AC |
3492 | } |
3493 | } | |
c906108c SS |
3494 | } |
3495 | ||
3496 | /* Prepare to store registers. Since we may send them all (using a | |
3497 | 'G' request), we have to read out the ones we don't want to change | |
3498 | first. */ | |
3499 | ||
c5aa993b | 3500 | static void |
fba45db2 | 3501 | remote_prepare_to_store (void) |
c906108c SS |
3502 | { |
3503 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
3504 | switch (remote_protocol_P.support) |
3505 | { | |
3506 | case PACKET_DISABLE: | |
3507 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 AC |
3508 | /* NOTE: This isn't rs->sizeof_g_packet because here, we are |
3509 | forcing the register cache to read its and not the target | |
3510 | registers. */ | |
3511 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); /* OK use. */ | |
5a2468f5 JM |
3512 | break; |
3513 | case PACKET_ENABLE: | |
3514 | break; | |
3515 | } | |
3516 | } | |
3517 | ||
ad10f812 | 3518 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
5a2468f5 JM |
3519 | packet was not recognized. */ |
3520 | ||
3521 | static int | |
ad10f812 | 3522 | store_register_using_P (int regnum) |
5a2468f5 | 3523 | { |
d01949b6 | 3524 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3525 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3526 | /* Try storing a single register. */ |
d01949b6 | 3527 | char *buf = alloca (rs->remote_packet_size); |
193cb69f | 3528 | char *regp = alloca (MAX_REGISTER_RAW_SIZE); |
5a2468f5 JM |
3529 | char *p; |
3530 | int i; | |
3531 | ||
ad10f812 | 3532 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3533 | p = buf + strlen (buf); |
ad10f812 AC |
3534 | regcache_collect (reg->regnum, regp); |
3535 | bin2hex (regp, p, REGISTER_RAW_SIZE (reg->regnum)); | |
3536 | remote_send (buf, rs->remote_packet_size); | |
5a2468f5 JM |
3537 | |
3538 | return buf[0] != '\0'; | |
c906108c SS |
3539 | } |
3540 | ||
5a2468f5 | 3541 | |
ad10f812 | 3542 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents |
7302a204 | 3543 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3544 | |
3545 | static void | |
ad10f812 | 3546 | remote_store_registers (int regnum) |
c906108c | 3547 | { |
d01949b6 | 3548 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3549 | char *buf; |
3550 | char *regs; | |
c906108c SS |
3551 | int i; |
3552 | char *p; | |
3553 | ||
39f77062 | 3554 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3555 | |
ad10f812 | 3556 | if (regnum >= 0) |
c906108c | 3557 | { |
5a2468f5 | 3558 | switch (remote_protocol_P.support) |
c906108c | 3559 | { |
5a2468f5 JM |
3560 | case PACKET_DISABLE: |
3561 | break; | |
3562 | case PACKET_ENABLE: | |
ad10f812 | 3563 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3564 | return; |
3565 | else | |
3566 | error ("Protocol error: P packet not recognized by stub"); | |
3567 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3568 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3569 | { |
3570 | /* The stub recognized the 'P' packet. Remember this. */ | |
3571 | remote_protocol_P.support = PACKET_ENABLE; | |
3572 | return; | |
3573 | } | |
3574 | else | |
3575 | { | |
3576 | /* The stub does not support the 'P' packet. Use 'G' | |
3577 | instead, and don't try using 'P' in the future (it | |
3578 | will just waste our time). */ | |
3579 | remote_protocol_P.support = PACKET_DISABLE; | |
3580 | break; | |
3581 | } | |
c906108c | 3582 | } |
c906108c SS |
3583 | } |
3584 | ||
193cb69f AC |
3585 | /* Extract all the registers in the regcache copying them into a |
3586 | local buffer. */ | |
3587 | { | |
b323314b | 3588 | int i; |
ad10f812 AC |
3589 | regs = alloca (rs->sizeof_g_packet); |
3590 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3591 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3592 | { |
b323314b AC |
3593 | struct packet_reg *r = &rs->regs[i]; |
3594 | if (r->in_g_packet) | |
3595 | regcache_collect (r->regnum, regs + r->offset); | |
193cb69f AC |
3596 | } |
3597 | } | |
c906108c SS |
3598 | |
3599 | /* Command describes registers byte by byte, | |
3600 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3601 | buf = alloca (rs->remote_packet_size); |
3602 | p = buf; | |
3603 | *p++ = 'G'; | |
c906108c | 3604 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3605 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3606 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3607 | } |
c906108c SS |
3608 | \f |
3609 | ||
3610 | /* Return the number of hex digits in num. */ | |
3611 | ||
3612 | static int | |
fba45db2 | 3613 | hexnumlen (ULONGEST num) |
c906108c SS |
3614 | { |
3615 | int i; | |
3616 | ||
3617 | for (i = 0; num != 0; i++) | |
3618 | num >>= 4; | |
3619 | ||
3620 | return max (i, 1); | |
3621 | } | |
3622 | ||
2df3850c | 3623 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3624 | |
3625 | static int | |
fba45db2 | 3626 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3627 | { |
c906108c | 3628 | int len = hexnumlen (num); |
2df3850c JM |
3629 | return hexnumnstr (buf, num, len); |
3630 | } | |
3631 | ||
c906108c | 3632 | |
2df3850c | 3633 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3634 | |
2df3850c | 3635 | static int |
fba45db2 | 3636 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3637 | { |
3638 | int i; | |
3639 | ||
3640 | buf[width] = '\0'; | |
3641 | ||
3642 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3643 | { |
c5aa993b | 3644 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3645 | num >>= 4; |
3646 | } | |
3647 | ||
2df3850c | 3648 | return width; |
c906108c SS |
3649 | } |
3650 | ||
3651 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3652 | ||
3653 | static CORE_ADDR | |
fba45db2 | 3654 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3655 | { |
3656 | if (remote_address_size > 0 | |
3657 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3658 | { | |
3659 | /* Only create a mask when that mask can safely be constructed | |
3660 | in a ULONGEST variable. */ | |
3661 | ULONGEST mask = 1; | |
3662 | mask = (mask << remote_address_size) - 1; | |
3663 | addr &= mask; | |
3664 | } | |
3665 | return addr; | |
3666 | } | |
3667 | ||
3668 | /* Determine whether the remote target supports binary downloading. | |
3669 | This is accomplished by sending a no-op memory write of zero length | |
3670 | to the target at the specified address. It does not suffice to send | |
3671 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3672 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3673 | ||
96baa820 JM |
3674 | NOTE: This can still lose if the serial line is not eight-bit |
3675 | clean. In cases like this, the user should clear "remote | |
3676 | X-packet". */ | |
3677 | ||
c906108c | 3678 | static void |
fba45db2 | 3679 | check_binary_download (CORE_ADDR addr) |
c906108c | 3680 | { |
d01949b6 | 3681 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3682 | switch (remote_protocol_binary_download.support) |
c906108c | 3683 | { |
96baa820 JM |
3684 | case PACKET_DISABLE: |
3685 | break; | |
3686 | case PACKET_ENABLE: | |
3687 | break; | |
3688 | case PACKET_SUPPORT_UNKNOWN: | |
3689 | { | |
d01949b6 | 3690 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
3691 | char *p; |
3692 | ||
3693 | p = buf; | |
3694 | *p++ = 'X'; | |
3695 | p += hexnumstr (p, (ULONGEST) addr); | |
3696 | *p++ = ','; | |
3697 | p += hexnumstr (p, (ULONGEST) 0); | |
3698 | *p++ = ':'; | |
3699 | *p = '\0'; | |
3700 | ||
3701 | putpkt_binary (buf, (int) (p - buf)); | |
d01949b6 | 3702 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3703 | |
96baa820 JM |
3704 | if (buf[0] == '\0') |
3705 | { | |
3706 | if (remote_debug) | |
3707 | fprintf_unfiltered (gdb_stdlog, | |
3708 | "binary downloading NOT suppported by target\n"); | |
3709 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3710 | } | |
3711 | else | |
3712 | { | |
3713 | if (remote_debug) | |
3714 | fprintf_unfiltered (gdb_stdlog, | |
3715 | "binary downloading suppported by target\n"); | |
3716 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3717 | } | |
3718 | break; | |
3719 | } | |
c906108c SS |
3720 | } |
3721 | } | |
3722 | ||
3723 | /* Write memory data directly to the remote machine. | |
3724 | This does not inform the data cache; the data cache uses this. | |
3725 | MEMADDR is the address in the remote memory space. | |
3726 | MYADDR is the address of the buffer in our space. | |
3727 | LEN is the number of bytes. | |
3728 | ||
917317f4 JM |
3729 | Returns number of bytes transferred, or 0 (setting errno) for |
3730 | error. Only transfer a single packet. */ | |
c906108c SS |
3731 | |
3732 | static int | |
917317f4 | 3733 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3734 | { |
917317f4 | 3735 | unsigned char *buf; |
c906108c | 3736 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3737 | unsigned char *p; |
3738 | unsigned char *plen; | |
c2d11a7d | 3739 | long sizeof_buf; |
917317f4 JM |
3740 | int plenlen; |
3741 | int todo; | |
3742 | int nr_bytes; | |
c906108c SS |
3743 | |
3744 | /* Verify that the target can support a binary download */ | |
3745 | check_binary_download (memaddr); | |
3746 | ||
917317f4 | 3747 | /* Determine the max packet size. */ |
11cf8741 | 3748 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3749 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3750 | buf = alloca (sizeof_buf); | |
c906108c | 3751 | |
7a292a7a | 3752 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3753 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3754 | ||
917317f4 JM |
3755 | /* construct "M"<memaddr>","<len>":" */ |
3756 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3757 | p = buf; | |
3758 | ||
3759 | /* Append [XM]. Compute a best guess of the number of bytes | |
3760 | actually transfered. */ | |
3761 | switch (remote_protocol_binary_download.support) | |
c906108c | 3762 | { |
917317f4 JM |
3763 | case PACKET_ENABLE: |
3764 | *p++ = 'X'; | |
3765 | /* Best guess at number of bytes that will fit. */ | |
3766 | todo = min (len, max_buf_size); | |
3767 | break; | |
3768 | case PACKET_DISABLE: | |
3769 | *p++ = 'M'; | |
3770 | /* num bytes that will fit */ | |
3771 | todo = min (len, max_buf_size / 2); | |
3772 | break; | |
3773 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3774 | internal_error (__FILE__, __LINE__, |
3775 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3776 | default: |
8e65ff28 | 3777 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 JM |
3778 | } |
3779 | ||
3780 | /* Append <memaddr> */ | |
3781 | memaddr = remote_address_masked (memaddr); | |
3782 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3783 | *p++ = ','; | |
3784 | ||
3785 | /* Append <len>. Retain the location/size of <len>. It may | |
3786 | need to be adjusted once the packet body has been created. */ | |
3787 | plen = p; | |
3788 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3789 | p += plenlen; | |
3790 | *p++ = ':'; | |
3791 | *p = '\0'; | |
3792 | ||
3793 | /* Append the packet body. */ | |
3794 | switch (remote_protocol_binary_download.support) | |
3795 | { | |
3796 | case PACKET_ENABLE: | |
3797 | /* Binary mode. Send target system values byte by byte, in | |
3798 | increasing byte addresses. Only escape certain critical | |
3799 | characters. */ | |
3800 | for (nr_bytes = 0; | |
3801 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3802 | nr_bytes++) | |
c906108c | 3803 | { |
917317f4 JM |
3804 | switch (myaddr[nr_bytes] & 0xff) |
3805 | { | |
3806 | case '$': | |
3807 | case '#': | |
3808 | case 0x7d: | |
3809 | /* These must be escaped */ | |
3810 | *p++ = 0x7d; | |
3811 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3812 | break; | |
3813 | default: | |
3814 | *p++ = myaddr[nr_bytes] & 0xff; | |
3815 | break; | |
3816 | } | |
c906108c | 3817 | } |
917317f4 | 3818 | if (nr_bytes < todo) |
c906108c | 3819 | { |
917317f4 JM |
3820 | /* Escape chars have filled up the buffer prematurely, |
3821 | and we have actually sent fewer bytes than planned. | |
3822 | Fix-up the length field of the packet. Use the same | |
3823 | number of characters as before. */ | |
3824 | ||
3825 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3826 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3827 | } |
917317f4 JM |
3828 | break; |
3829 | case PACKET_DISABLE: | |
3830 | /* Normal mode: Send target system values byte by byte, in | |
3831 | increasing byte addresses. Each byte is encoded as a two hex | |
3832 | value. */ | |
2644f393 | 3833 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3834 | p += 2 * nr_bytes; |
917317f4 JM |
3835 | break; |
3836 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3837 | internal_error (__FILE__, __LINE__, |
3838 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3839 | default: |
8e65ff28 | 3840 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3841 | } |
917317f4 JM |
3842 | |
3843 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3844 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3845 | |
3846 | if (buf[0] == 'E') | |
3847 | { | |
3848 | /* There is no correspondance between what the remote protocol | |
3849 | uses for errors and errno codes. We would like a cleaner way | |
3850 | of representing errors (big enough to include errno codes, | |
3851 | bfd_error codes, and others). But for now just return EIO. */ | |
3852 | errno = EIO; | |
3853 | return 0; | |
3854 | } | |
3855 | ||
3856 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3857 | bytes than we'd planned. */ | |
3858 | return nr_bytes; | |
c906108c SS |
3859 | } |
3860 | ||
3861 | /* Read memory data directly from the remote machine. | |
3862 | This does not use the data cache; the data cache uses this. | |
3863 | MEMADDR is the address in the remote memory space. | |
3864 | MYADDR is the address of the buffer in our space. | |
3865 | LEN is the number of bytes. | |
3866 | ||
3867 | Returns number of bytes transferred, or 0 for error. */ | |
3868 | ||
917317f4 JM |
3869 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3870 | remote targets) shouldn't attempt to read the entire buffer. | |
3871 | Instead it should read a single packet worth of data and then | |
3872 | return the byte size of that packet to the caller. The caller (its | |
3873 | caller and its callers caller ;-) already contains code for | |
3874 | handling partial reads. */ | |
3875 | ||
c906108c | 3876 | static int |
fba45db2 | 3877 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3878 | { |
11cf8741 | 3879 | char *buf; |
c906108c | 3880 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3881 | long sizeof_buf; |
c906108c SS |
3882 | int origlen; |
3883 | ||
11cf8741 JM |
3884 | /* Create a buffer big enough for this packet. */ |
3885 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3886 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3887 | buf = alloca (sizeof_buf); | |
c906108c SS |
3888 | |
3889 | origlen = len; | |
3890 | while (len > 0) | |
3891 | { | |
c906108c SS |
3892 | char *p; |
3893 | int todo; | |
3894 | int i; | |
3895 | ||
c5aa993b | 3896 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3897 | |
3898 | /* construct "m"<memaddr>","<len>" */ | |
3899 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3900 | memaddr = remote_address_masked (memaddr); | |
3901 | p = buf; | |
3902 | *p++ = 'm'; | |
3903 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3904 | *p++ = ','; | |
3905 | p += hexnumstr (p, (ULONGEST) todo); | |
3906 | *p = '\0'; | |
3907 | ||
3908 | putpkt (buf); | |
c2d11a7d | 3909 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3910 | |
3911 | if (buf[0] == 'E') | |
3912 | { | |
3913 | /* There is no correspondance between what the remote protocol uses | |
3914 | for errors and errno codes. We would like a cleaner way of | |
3915 | representing errors (big enough to include errno codes, bfd_error | |
3916 | codes, and others). But for now just return EIO. */ | |
3917 | errno = EIO; | |
3918 | return 0; | |
3919 | } | |
3920 | ||
c5aa993b JM |
3921 | /* Reply describes memory byte by byte, |
3922 | each byte encoded as two hex characters. */ | |
c906108c SS |
3923 | |
3924 | p = buf; | |
30559e10 | 3925 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3926 | { |
30559e10 MS |
3927 | /* Reply is short. This means that we were able to read |
3928 | only part of what we wanted to. */ | |
3929 | return i + (origlen - len); | |
c906108c SS |
3930 | } |
3931 | myaddr += todo; | |
3932 | memaddr += todo; | |
3933 | len -= todo; | |
3934 | } | |
3935 | return origlen; | |
3936 | } | |
3937 | \f | |
3938 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3939 | transferring to or from debugger address BUFFER. Write to inferior if |
3940 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3941 | for error. TARGET is unused. */ |
392a587b | 3942 | |
c906108c SS |
3943 | /* ARGSUSED */ |
3944 | static int | |
c338868a | 3945 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
29e57380 C |
3946 | int should_write, |
3947 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, | |
3948 | struct target_ops *target) | |
c906108c | 3949 | { |
392a587b JM |
3950 | CORE_ADDR targ_addr; |
3951 | int targ_len; | |
4930751a C |
3952 | int res; |
3953 | ||
392a587b JM |
3954 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); |
3955 | if (targ_len <= 0) | |
c906108c | 3956 | return 0; |
c906108c | 3957 | |
4930751a C |
3958 | if (should_write) |
3959 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3960 | else | |
3961 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3962 | ||
3963 | return res; | |
c906108c SS |
3964 | } |
3965 | ||
c5aa993b | 3966 | |
c906108c SS |
3967 | #if 0 |
3968 | /* Enable after 4.12. */ | |
3969 | ||
3970 | void | |
c338868a KB |
3971 | remote_search (int len, char *data, char *mask, CORE_ADDR startaddr, |
3972 | int increment, CORE_ADDR lorange, CORE_ADDR hirange, | |
3973 | CORE_ADDR *addr_found, char *data_found) | |
c906108c SS |
3974 | { |
3975 | if (increment == -4 && len == 4) | |
3976 | { | |
3977 | long mask_long, data_long; | |
3978 | long data_found_long; | |
3979 | CORE_ADDR addr_we_found; | |
d01949b6 | 3980 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
3981 | long returned_long[2]; |
3982 | char *p; | |
3983 | ||
3984 | mask_long = extract_unsigned_integer (mask, len); | |
3985 | data_long = extract_unsigned_integer (data, len); | |
3986 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3987 | putpkt (buf); | |
d01949b6 | 3988 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3989 | if (buf[0] == '\0') |
3990 | { | |
3991 | /* The stub doesn't support the 't' request. We might want to | |
3992 | remember this fact, but on the other hand the stub could be | |
3993 | switched on us. Maybe we should remember it only until | |
3994 | the next "target remote". */ | |
3995 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3996 | hirange, addr_found, data_found); | |
3997 | return; | |
3998 | } | |
3999 | ||
4000 | if (buf[0] == 'E') | |
4001 | /* There is no correspondance between what the remote protocol uses | |
4002 | for errors and errno codes. We would like a cleaner way of | |
4003 | representing errors (big enough to include errno codes, bfd_error | |
4004 | codes, and others). But for now just use EIO. */ | |
4005 | memory_error (EIO, startaddr); | |
4006 | p = buf; | |
4007 | addr_we_found = 0; | |
4008 | while (*p != '\0' && *p != ',') | |
4009 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
4010 | if (*p == '\0') | |
4011 | error ("Protocol error: short return for search"); | |
4012 | ||
4013 | data_found_long = 0; | |
4014 | while (*p != '\0' && *p != ',') | |
4015 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
4016 | /* Ignore anything after this comma, for future extensions. */ | |
4017 | ||
4018 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
4019 | { | |
4020 | *addr_found = 0; | |
4021 | return; | |
4022 | } | |
4023 | ||
4024 | *addr_found = addr_we_found; | |
4025 | *data_found = store_unsigned_integer (data_we_found, len); | |
4026 | return; | |
4027 | } | |
4028 | generic_search (len, data, mask, startaddr, increment, lorange, | |
4029 | hirange, addr_found, data_found); | |
4030 | } | |
4031 | #endif /* 0 */ | |
4032 | \f | |
4033 | static void | |
fba45db2 | 4034 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4035 | { |
4036 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4037 | } | |
4038 | \f | |
4039 | /* Stuff for dealing with the packets which are part of this protocol. | |
4040 | See comment at top of file for details. */ | |
4041 | ||
4042 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
4043 | ||
4044 | static int | |
fba45db2 | 4045 | readchar (int timeout) |
c906108c SS |
4046 | { |
4047 | int ch; | |
4048 | ||
2cd58942 | 4049 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4050 | |
2acceee2 JM |
4051 | if (ch >= 0) |
4052 | return (ch & 0x7f); | |
4053 | ||
4054 | switch ((enum serial_rc) ch) | |
c906108c SS |
4055 | { |
4056 | case SERIAL_EOF: | |
2acceee2 | 4057 | target_mourn_inferior (); |
c906108c | 4058 | error ("Remote connection closed"); |
2acceee2 | 4059 | /* no return */ |
c906108c SS |
4060 | case SERIAL_ERROR: |
4061 | perror_with_name ("Remote communication error"); | |
2acceee2 | 4062 | /* no return */ |
c906108c | 4063 | case SERIAL_TIMEOUT: |
2acceee2 | 4064 | break; |
c906108c | 4065 | } |
2acceee2 | 4066 | return ch; |
c906108c SS |
4067 | } |
4068 | ||
4069 | /* Send the command in BUF to the remote machine, and read the reply | |
4070 | into BUF. Report an error if we get an error reply. */ | |
4071 | ||
4072 | static void | |
c2d11a7d JM |
4073 | remote_send (char *buf, |
4074 | long sizeof_buf) | |
c906108c SS |
4075 | { |
4076 | putpkt (buf); | |
c2d11a7d | 4077 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
4078 | |
4079 | if (buf[0] == 'E') | |
4080 | error ("Remote failure reply: %s", buf); | |
4081 | } | |
4082 | ||
4083 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4084 | string notation. */ | |
4085 | ||
4086 | static void | |
fba45db2 | 4087 | print_packet (char *buf) |
c906108c SS |
4088 | { |
4089 | puts_filtered ("\""); | |
43e526b9 | 4090 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4091 | puts_filtered ("\""); |
4092 | } | |
4093 | ||
4094 | int | |
fba45db2 | 4095 | putpkt (char *buf) |
c906108c SS |
4096 | { |
4097 | return putpkt_binary (buf, strlen (buf)); | |
4098 | } | |
4099 | ||
4100 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 4101 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
4102 | to account for the $, # and checksum, and for a possible /0 if we are |
4103 | debugging (remote_debug) and want to print the sent packet as a string */ | |
4104 | ||
4105 | static int | |
fba45db2 | 4106 | putpkt_binary (char *buf, int cnt) |
c906108c | 4107 | { |
d01949b6 | 4108 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4109 | int i; |
4110 | unsigned char csum = 0; | |
11cf8741 | 4111 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 4112 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 4113 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 4114 | |
c906108c SS |
4115 | int ch; |
4116 | int tcount = 0; | |
4117 | char *p; | |
4118 | ||
4119 | /* Copy the packet into buffer BUF2, encapsulating it | |
4120 | and giving it a checksum. */ | |
4121 | ||
c906108c SS |
4122 | p = buf2; |
4123 | *p++ = '$'; | |
4124 | ||
4125 | for (i = 0; i < cnt; i++) | |
4126 | { | |
4127 | csum += buf[i]; | |
4128 | *p++ = buf[i]; | |
4129 | } | |
4130 | *p++ = '#'; | |
4131 | *p++ = tohex ((csum >> 4) & 0xf); | |
4132 | *p++ = tohex (csum & 0xf); | |
4133 | ||
4134 | /* Send it over and over until we get a positive ack. */ | |
4135 | ||
4136 | while (1) | |
4137 | { | |
4138 | int started_error_output = 0; | |
4139 | ||
4140 | if (remote_debug) | |
4141 | { | |
4142 | *p = '\0'; | |
43e526b9 JM |
4143 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4144 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4145 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4146 | gdb_flush (gdb_stdlog); |
c906108c | 4147 | } |
2cd58942 | 4148 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
4149 | perror_with_name ("putpkt: write failed"); |
4150 | ||
4151 | /* read until either a timeout occurs (-2) or '+' is read */ | |
4152 | while (1) | |
4153 | { | |
4154 | ch = readchar (remote_timeout); | |
4155 | ||
c5aa993b | 4156 | if (remote_debug) |
c906108c SS |
4157 | { |
4158 | switch (ch) | |
4159 | { | |
4160 | case '+': | |
1216fa2c | 4161 | case '-': |
c906108c SS |
4162 | case SERIAL_TIMEOUT: |
4163 | case '$': | |
4164 | if (started_error_output) | |
4165 | { | |
4166 | putchar_unfiltered ('\n'); | |
4167 | started_error_output = 0; | |
4168 | } | |
4169 | } | |
4170 | } | |
4171 | ||
4172 | switch (ch) | |
4173 | { | |
4174 | case '+': | |
4175 | if (remote_debug) | |
0f71a2f6 | 4176 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4177 | return 1; |
1216fa2c AC |
4178 | case '-': |
4179 | if (remote_debug) | |
4180 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4181 | case SERIAL_TIMEOUT: |
c5aa993b | 4182 | tcount++; |
c906108c SS |
4183 | if (tcount > 3) |
4184 | return 0; | |
4185 | break; /* Retransmit buffer */ | |
4186 | case '$': | |
4187 | { | |
40e3f985 FN |
4188 | if (remote_debug) |
4189 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
4190 | /* It's probably an old response, and we're out of sync. |
4191 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 4192 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 4193 | continue; /* Now, go look for + */ |
c906108c SS |
4194 | } |
4195 | default: | |
4196 | if (remote_debug) | |
4197 | { | |
4198 | if (!started_error_output) | |
4199 | { | |
4200 | started_error_output = 1; | |
0f71a2f6 | 4201 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4202 | } |
0f71a2f6 | 4203 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4204 | } |
4205 | continue; | |
4206 | } | |
4207 | break; /* Here to retransmit */ | |
4208 | } | |
4209 | ||
4210 | #if 0 | |
4211 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4212 | able to get out next time we call QUIT, without anything as |
4213 | violent as interrupt_query. If we want to provide a way out of | |
4214 | here without getting to the next QUIT, it should be based on | |
4215 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4216 | if (quit_flag) |
4217 | { | |
4218 | quit_flag = 0; | |
4219 | interrupt_query (); | |
4220 | } | |
4221 | #endif | |
4222 | } | |
4223 | } | |
4224 | ||
0f71a2f6 JM |
4225 | static int remote_cisco_mode; |
4226 | ||
c906108c SS |
4227 | /* Come here after finding the start of the frame. Collect the rest |
4228 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4229 | compression. No more than sizeof_buf-1 characters are read so that |
4230 | the buffer can be NUL terminated. | |
c906108c | 4231 | |
c2d11a7d JM |
4232 | Returns -1 on error, number of characters in buffer (ignoring the |
4233 | trailing NULL) on success. (could be extended to return one of the | |
4234 | SERIAL status indications). */ | |
4235 | ||
4236 | static long | |
4237 | read_frame (char *buf, | |
4238 | long sizeof_buf) | |
c906108c SS |
4239 | { |
4240 | unsigned char csum; | |
c2d11a7d | 4241 | long bc; |
c906108c SS |
4242 | int c; |
4243 | ||
4244 | csum = 0; | |
c2d11a7d | 4245 | bc = 0; |
c906108c SS |
4246 | |
4247 | while (1) | |
4248 | { | |
c2d11a7d | 4249 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4250 | c = readchar (remote_timeout); |
c906108c SS |
4251 | switch (c) |
4252 | { | |
4253 | case SERIAL_TIMEOUT: | |
4254 | if (remote_debug) | |
0f71a2f6 | 4255 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4256 | return -1; |
c906108c SS |
4257 | case '$': |
4258 | if (remote_debug) | |
0f71a2f6 JM |
4259 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4260 | gdb_stdlog); | |
c2d11a7d | 4261 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4262 | case '#': |
4263 | { | |
4264 | unsigned char pktcsum; | |
e1b09194 AC |
4265 | int check_0 = 0; |
4266 | int check_1 = 0; | |
c906108c | 4267 | |
c2d11a7d | 4268 | buf[bc] = '\0'; |
c906108c | 4269 | |
e1b09194 AC |
4270 | check_0 = readchar (remote_timeout); |
4271 | if (check_0 >= 0) | |
4272 | check_1 = readchar (remote_timeout); | |
4273 | ||
4274 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
4275 | { | |
4276 | if (remote_debug) | |
4277 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4278 | return -1; | |
4279 | } | |
4280 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4281 | { |
4282 | if (remote_debug) | |
4283 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4284 | return -1; | |
4285 | } | |
c906108c | 4286 | |
e1b09194 | 4287 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4288 | if (csum == pktcsum) |
c2d11a7d | 4289 | return bc; |
c906108c | 4290 | |
c5aa993b | 4291 | if (remote_debug) |
c906108c | 4292 | { |
0f71a2f6 | 4293 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4294 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4295 | pktcsum, csum); |
4296 | fputs_filtered (buf, gdb_stdlog); | |
4297 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4298 | } |
c2d11a7d JM |
4299 | /* Number of characters in buffer ignoring trailing |
4300 | NUL. */ | |
4301 | return -1; | |
c906108c SS |
4302 | } |
4303 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4304 | { |
4305 | int repeat; | |
4306 | csum += c; | |
c906108c | 4307 | |
c2c6d25f JM |
4308 | if (remote_cisco_mode == 0) |
4309 | { | |
4310 | c = readchar (remote_timeout); | |
4311 | csum += c; | |
4312 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
4313 | } | |
4314 | else | |
4315 | { | |
4316 | /* Cisco's run-length encoding variant uses two | |
4317 | hex chars to represent the repeat count. */ | |
4318 | ||
4319 | c = readchar (remote_timeout); | |
4320 | csum += c; | |
4321 | repeat = fromhex (c) << 4; | |
4322 | c = readchar (remote_timeout); | |
4323 | csum += c; | |
4324 | repeat += fromhex (c); | |
4325 | } | |
c906108c | 4326 | |
c2d11a7d JM |
4327 | /* The character before ``*'' is repeated. */ |
4328 | ||
c2c6d25f | 4329 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4330 | && bc > 0 |
fb6e5c55 | 4331 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4332 | { |
c2d11a7d JM |
4333 | memset (&buf[bc], buf[bc - 1], repeat); |
4334 | bc += repeat; | |
c2c6d25f JM |
4335 | continue; |
4336 | } | |
4337 | ||
c2d11a7d | 4338 | buf[bc] = '\0'; |
c2c6d25f JM |
4339 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4340 | puts_filtered (buf); | |
4341 | puts_filtered ("\n"); | |
c2d11a7d | 4342 | return -1; |
c2c6d25f | 4343 | } |
c906108c | 4344 | default: |
c2d11a7d | 4345 | if (bc < sizeof_buf - 1) |
c906108c | 4346 | { |
c2d11a7d | 4347 | buf[bc++] = c; |
c906108c SS |
4348 | csum += c; |
4349 | continue; | |
4350 | } | |
4351 | ||
c2d11a7d | 4352 | buf[bc] = '\0'; |
c906108c SS |
4353 | puts_filtered ("Remote packet too long: "); |
4354 | puts_filtered (buf); | |
4355 | puts_filtered ("\n"); | |
4356 | ||
c2d11a7d | 4357 | return -1; |
c906108c SS |
4358 | } |
4359 | } | |
4360 | } | |
4361 | ||
4362 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4363 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4364 | this is used (in synchronous mode) to wait for a target that is is | |
4365 | executing user code to stop. */ | |
d9fcf2fb JM |
4366 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4367 | don't have to change all the calls to getpkt to deal with the | |
4368 | return value, because at the moment I don't know what the right | |
4369 | thing to do it for those. */ | |
c906108c | 4370 | void |
c2d11a7d JM |
4371 | getpkt (char *buf, |
4372 | long sizeof_buf, | |
4373 | int forever) | |
d9fcf2fb JM |
4374 | { |
4375 | int timed_out; | |
4376 | ||
4377 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4378 | } | |
4379 | ||
4380 | ||
4381 | /* Read a packet from the remote machine, with error checking, and | |
4382 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4383 | this is used (in synchronous mode) to wait for a target that is is | |
4384 | executing user code to stop. If FOREVER == 0, this function is | |
4385 | allowed to time out gracefully and return an indication of this to | |
4386 | the caller. */ | |
3172dc30 | 4387 | static int |
d9fcf2fb JM |
4388 | getpkt_sane (char *buf, |
4389 | long sizeof_buf, | |
4390 | int forever) | |
c906108c SS |
4391 | { |
4392 | int c; | |
4393 | int tries; | |
4394 | int timeout; | |
4395 | int val; | |
4396 | ||
c5aa993b | 4397 | strcpy (buf, "timeout"); |
c906108c SS |
4398 | |
4399 | if (forever) | |
4400 | { | |
c906108c | 4401 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4402 | } |
4403 | ||
4404 | else | |
4405 | timeout = remote_timeout; | |
4406 | ||
4407 | #define MAX_TRIES 3 | |
4408 | ||
4409 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4410 | { | |
4411 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4412 | continuously, but if it pauses, we'll get a zero from readchar |
4413 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4414 | |
4415 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4416 | After that, we expect characters to arrive at a brisk pace. They |
4417 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4418 | |
4419 | do | |
4420 | { | |
4421 | c = readchar (timeout); | |
4422 | ||
4423 | if (c == SERIAL_TIMEOUT) | |
4424 | { | |
2acceee2 | 4425 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4426 | { |
2acceee2 | 4427 | QUIT; |
c906108c SS |
4428 | target_mourn_inferior (); |
4429 | error ("Watchdog has expired. Target detached.\n"); | |
4430 | } | |
c906108c | 4431 | if (remote_debug) |
0f71a2f6 | 4432 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4433 | goto retry; |
4434 | } | |
4435 | } | |
4436 | while (c != '$'); | |
4437 | ||
4438 | /* We've found the start of a packet, now collect the data. */ | |
4439 | ||
c2d11a7d | 4440 | val = read_frame (buf, sizeof_buf); |
c906108c | 4441 | |
c2d11a7d | 4442 | if (val >= 0) |
c906108c SS |
4443 | { |
4444 | if (remote_debug) | |
43e526b9 JM |
4445 | { |
4446 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4447 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4448 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4449 | } | |
2cd58942 | 4450 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4451 | return 0; |
c906108c SS |
4452 | } |
4453 | ||
4454 | /* Try the whole thing again. */ | |
4455 | retry: | |
2cd58942 | 4456 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4457 | } |
4458 | ||
4459 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4460 | ||
4461 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4462 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4463 | return 1; |
c906108c SS |
4464 | } |
4465 | \f | |
4466 | static void | |
fba45db2 | 4467 | remote_kill (void) |
c906108c SS |
4468 | { |
4469 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4470 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4471 | if (kill_kludge) | |
4472 | { | |
4473 | kill_kludge = 0; | |
4474 | target_mourn_inferior (); | |
4475 | return; | |
4476 | } | |
4477 | ||
4478 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4479 | speaking terms with the remote system. */ | |
c5aa993b | 4480 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4481 | |
4482 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4483 | we do or not. For the existing stubs, kill is a noop. */ | |
4484 | target_mourn_inferior (); | |
4485 | } | |
4486 | ||
43ff13b4 JM |
4487 | /* Async version of remote_kill. */ |
4488 | static void | |
fba45db2 | 4489 | remote_async_kill (void) |
43ff13b4 JM |
4490 | { |
4491 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4492 | if (target_is_async_p ()) |
2cd58942 | 4493 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4494 | |
4495 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4496 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4497 | if (kill_kludge) | |
4498 | { | |
4499 | kill_kludge = 0; | |
4500 | target_mourn_inferior (); | |
4501 | return; | |
4502 | } | |
4503 | ||
4504 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4505 | speaking terms with the remote system. */ | |
c5aa993b | 4506 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4507 | |
4508 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4509 | we do or not. For the existing stubs, kill is a noop. */ | |
4510 | target_mourn_inferior (); | |
4511 | } | |
4512 | ||
c906108c | 4513 | static void |
fba45db2 | 4514 | remote_mourn (void) |
c906108c SS |
4515 | { |
4516 | remote_mourn_1 (&remote_ops); | |
4517 | } | |
4518 | ||
53a5351d | 4519 | static void |
fba45db2 | 4520 | remote_async_mourn (void) |
53a5351d JM |
4521 | { |
4522 | remote_mourn_1 (&remote_async_ops); | |
4523 | } | |
4524 | ||
c906108c | 4525 | static void |
fba45db2 | 4526 | extended_remote_mourn (void) |
c906108c SS |
4527 | { |
4528 | /* We do _not_ want to mourn the target like this; this will | |
4529 | remove the extended remote target from the target stack, | |
4530 | and the next time the user says "run" it'll fail. | |
4531 | ||
4532 | FIXME: What is the right thing to do here? */ | |
4533 | #if 0 | |
4534 | remote_mourn_1 (&extended_remote_ops); | |
4535 | #endif | |
4536 | } | |
4537 | ||
4538 | /* Worker function for remote_mourn. */ | |
4539 | static void | |
fba45db2 | 4540 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4541 | { |
4542 | unpush_target (target); | |
4543 | generic_mourn_inferior (); | |
4544 | } | |
4545 | ||
4546 | /* In the extended protocol we want to be able to do things like | |
4547 | "run" and have them basically work as expected. So we need | |
4548 | a special create_inferior function. | |
4549 | ||
4550 | FIXME: One day add support for changing the exec file | |
4551 | we're debugging, arguments and an environment. */ | |
4552 | ||
4553 | static void | |
fba45db2 | 4554 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4555 | { |
4556 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4557 | the remote server. */ | |
4558 | remove_breakpoints (); | |
4559 | ||
4560 | /* Now restart the remote server. */ | |
4561 | extended_remote_restart (); | |
4562 | ||
4563 | /* Now put the breakpoints back in. This way we're safe if the | |
4564 | restart function works via a unix fork on the remote side. */ | |
4565 | insert_breakpoints (); | |
4566 | ||
4567 | /* Clean up from the last time we were running. */ | |
4568 | clear_proceed_status (); | |
4569 | ||
4570 | /* Let the remote process run. */ | |
4571 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4572 | } | |
4573 | ||
43ff13b4 JM |
4574 | /* Async version of extended_remote_create_inferior. */ |
4575 | static void | |
fba45db2 | 4576 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4577 | { |
4578 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4579 | the remote server. */ | |
4580 | remove_breakpoints (); | |
4581 | ||
4582 | /* If running asynchronously, register the target file descriptor | |
4583 | with the event loop. */ | |
2acceee2 JM |
4584 | if (event_loop_p && target_can_async_p ()) |
4585 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4586 | |
4587 | /* Now restart the remote server. */ | |
4588 | extended_remote_restart (); | |
4589 | ||
4590 | /* Now put the breakpoints back in. This way we're safe if the | |
4591 | restart function works via a unix fork on the remote side. */ | |
4592 | insert_breakpoints (); | |
4593 | ||
4594 | /* Clean up from the last time we were running. */ | |
4595 | clear_proceed_status (); | |
4596 | ||
4597 | /* Let the remote process run. */ | |
4598 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4599 | } | |
c906108c | 4600 | \f |
c5aa993b | 4601 | |
c906108c SS |
4602 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4603 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4604 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4605 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4606 | the standard routines that are in mem-break.c. */ | |
4607 | ||
4608 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4609 | the choice of breakpoint instruction affects target program design and | |
4610 | vice versa, and by making it user-tweakable, the special code here | |
4611 | goes away and we need fewer special GDB configurations. */ | |
4612 | ||
4613 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4614 | #define REMOTE_BREAKPOINT | |
4615 | #endif | |
4616 | ||
4617 | #ifdef REMOTE_BREAKPOINT | |
4618 | ||
4619 | /* If the target isn't bi-endian, just pretend it is. */ | |
4620 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4621 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4622 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4623 | #endif | |
4624 | ||
4625 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4626 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4627 | ||
4628 | #endif /* REMOTE_BREAKPOINT */ | |
4629 | ||
4630 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4631 | support. We read the contents of the target location and stash it, | |
4632 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4633 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4634 | memory allocated for saving the target contents. It is guaranteed | |
4635 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4636 | is accomplished via BREAKPOINT_MAX). */ | |
4637 | ||
4638 | static int | |
fba45db2 | 4639 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4640 | { |
d01949b6 | 4641 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4642 | #ifdef REMOTE_BREAKPOINT |
4643 | int val; | |
96baa820 JM |
4644 | #endif |
4645 | int bp_size; | |
4646 | ||
d471ea57 AC |
4647 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4648 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4649 | fails, and the user has explicitly requested the Z support then | |
4650 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4651 | |
d471ea57 | 4652 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4653 | { |
d01949b6 | 4654 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4655 | char *p = buf; |
96baa820 | 4656 | |
0caabb7e | 4657 | addr = remote_address_masked (addr); |
96baa820 JM |
4658 | *(p++) = 'Z'; |
4659 | *(p++) = '0'; | |
4660 | *(p++) = ','; | |
0caabb7e AC |
4661 | p += hexnumstr (p, (ULONGEST) addr); |
4662 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4663 | sprintf (p, ",%d", bp_size); |
4664 | ||
4665 | putpkt (buf); | |
d01949b6 | 4666 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4667 | |
d471ea57 | 4668 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4669 | { |
d471ea57 AC |
4670 | case PACKET_ERROR: |
4671 | return -1; | |
4672 | case PACKET_OK: | |
4673 | return 0; | |
4674 | case PACKET_UNKNOWN: | |
4675 | break; | |
96baa820 JM |
4676 | } |
4677 | } | |
c906108c | 4678 | |
96baa820 | 4679 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4680 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4681 | ||
4682 | if (val == 0) | |
4683 | { | |
d7449b42 | 4684 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4685 | val = target_write_memory (addr, (char *) big_break_insn, |
4686 | sizeof big_break_insn); | |
4687 | else | |
4688 | val = target_write_memory (addr, (char *) little_break_insn, | |
4689 | sizeof little_break_insn); | |
4690 | } | |
4691 | ||
4692 | return val; | |
4693 | #else | |
4694 | return memory_insert_breakpoint (addr, contents_cache); | |
4695 | #endif /* REMOTE_BREAKPOINT */ | |
4696 | } | |
4697 | ||
4698 | static int | |
fba45db2 | 4699 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4700 | { |
d01949b6 | 4701 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4702 | int bp_size; |
4703 | ||
d471ea57 | 4704 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4705 | { |
d01949b6 | 4706 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4707 | char *p = buf; |
96baa820 JM |
4708 | |
4709 | *(p++) = 'z'; | |
4710 | *(p++) = '0'; | |
4711 | *(p++) = ','; | |
4712 | ||
0caabb7e AC |
4713 | addr = remote_address_masked (addr); |
4714 | p += hexnumstr (p, (ULONGEST) addr); | |
4715 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4716 | sprintf (p, ",%d", bp_size); |
4717 | ||
4718 | putpkt (buf); | |
d01949b6 | 4719 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4720 | |
4721 | return (buf[0] == 'E'); | |
4722 | } | |
4723 | ||
c906108c SS |
4724 | #ifdef REMOTE_BREAKPOINT |
4725 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4726 | #else | |
4727 | return memory_remove_breakpoint (addr, contents_cache); | |
4728 | #endif /* REMOTE_BREAKPOINT */ | |
4729 | } | |
4730 | ||
d471ea57 AC |
4731 | static int |
4732 | watchpoint_to_Z_packet (int type) | |
4733 | { | |
4734 | switch (type) | |
4735 | { | |
4736 | case hw_write: | |
4737 | return 2; | |
4738 | break; | |
4739 | case hw_read: | |
4740 | return 3; | |
4741 | break; | |
4742 | case hw_access: | |
4743 | return 4; | |
4744 | break; | |
4745 | default: | |
8e65ff28 AC |
4746 | internal_error (__FILE__, __LINE__, |
4747 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4748 | } |
4749 | } | |
4750 | ||
4751 | /* FIXME: This function should be static and a member of the remote | |
4752 | target vector. */ | |
4753 | ||
96baa820 | 4754 | int |
fba45db2 | 4755 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4756 | { |
d01949b6 AC |
4757 | struct remote_state *rs = get_remote_state (); |
4758 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4759 | char *p; |
d471ea57 | 4760 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4761 | |
d471ea57 AC |
4762 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4763 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4764 | remote_protocol_Z[packet].name, | |
4765 | remote_protocol_Z[packet].title); | |
96baa820 | 4766 | |
d471ea57 | 4767 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4768 | p = strchr (buf, '\0'); |
4769 | addr = remote_address_masked (addr); | |
4770 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4771 | sprintf (p, ",%x", len); |
96baa820 JM |
4772 | |
4773 | putpkt (buf); | |
d01949b6 | 4774 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4775 | |
d471ea57 AC |
4776 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4777 | { | |
4778 | case PACKET_ERROR: | |
4779 | case PACKET_UNKNOWN: | |
4780 | return -1; | |
4781 | case PACKET_OK: | |
4782 | return 0; | |
4783 | } | |
8e65ff28 AC |
4784 | internal_error (__FILE__, __LINE__, |
4785 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4786 | } |
4787 | ||
d471ea57 AC |
4788 | /* FIXME: This function should be static and a member of the remote |
4789 | target vector. */ | |
4790 | ||
96baa820 | 4791 | int |
fba45db2 | 4792 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4793 | { |
d01949b6 AC |
4794 | struct remote_state *rs = get_remote_state (); |
4795 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4796 | char *p; |
d471ea57 AC |
4797 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4798 | ||
4799 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4800 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4801 | remote_protocol_Z[packet].name, | |
4802 | remote_protocol_Z[packet].title); | |
96baa820 | 4803 | |
d471ea57 | 4804 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4805 | p = strchr (buf, '\0'); |
4806 | addr = remote_address_masked (addr); | |
4807 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4808 | sprintf (p, ",%x", len); |
96baa820 | 4809 | putpkt (buf); |
d01949b6 | 4810 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4811 | |
d471ea57 AC |
4812 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4813 | { | |
4814 | case PACKET_ERROR: | |
4815 | case PACKET_UNKNOWN: | |
4816 | return -1; | |
4817 | case PACKET_OK: | |
4818 | return 0; | |
4819 | } | |
8e65ff28 AC |
4820 | internal_error (__FILE__, __LINE__, |
4821 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4822 | } |
4823 | ||
d471ea57 AC |
4824 | /* FIXME: This function should be static and a member of the remote |
4825 | target vector. */ | |
4826 | ||
96baa820 | 4827 | int |
fba45db2 | 4828 | remote_insert_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4829 | { |
d01949b6 AC |
4830 | struct remote_state *rs = get_remote_state (); |
4831 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4832 | char *p = buf; |
96baa820 | 4833 | |
d471ea57 AC |
4834 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4835 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4836 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4837 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4838 | ||
96baa820 JM |
4839 | *(p++) = 'Z'; |
4840 | *(p++) = '1'; | |
4841 | *(p++) = ','; | |
4842 | ||
4843 | addr = remote_address_masked (addr); | |
4844 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4845 | sprintf (p, ",%x", len); |
96baa820 JM |
4846 | |
4847 | putpkt (buf); | |
d01949b6 | 4848 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4849 | |
d471ea57 AC |
4850 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4851 | { | |
4852 | case PACKET_ERROR: | |
4853 | case PACKET_UNKNOWN: | |
4854 | return -1; | |
4855 | case PACKET_OK: | |
4856 | return 0; | |
4857 | } | |
8e65ff28 AC |
4858 | internal_error (__FILE__, __LINE__, |
4859 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4860 | } |
4861 | ||
d471ea57 AC |
4862 | /* FIXME: This function should be static and a member of the remote |
4863 | target vector. */ | |
4864 | ||
96baa820 | 4865 | int |
fba45db2 | 4866 | remote_remove_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4867 | { |
d01949b6 AC |
4868 | struct remote_state *rs = get_remote_state (); |
4869 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4870 | char *p = buf; |
96baa820 | 4871 | |
d471ea57 AC |
4872 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4873 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4874 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4875 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4876 | ||
96baa820 JM |
4877 | *(p++) = 'z'; |
4878 | *(p++) = '1'; | |
4879 | *(p++) = ','; | |
4880 | ||
4881 | addr = remote_address_masked (addr); | |
4882 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4883 | sprintf (p, ",%x", len); |
96baa820 JM |
4884 | |
4885 | putpkt(buf); | |
d01949b6 | 4886 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4887 | |
d471ea57 AC |
4888 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4889 | { | |
4890 | case PACKET_ERROR: | |
4891 | case PACKET_UNKNOWN: | |
4892 | return -1; | |
4893 | case PACKET_OK: | |
4894 | return 0; | |
4895 | } | |
8e65ff28 AC |
4896 | internal_error (__FILE__, __LINE__, |
4897 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 | 4898 | } |
96baa820 | 4899 | |
c906108c SS |
4900 | /* Some targets are only capable of doing downloads, and afterwards |
4901 | they switch to the remote serial protocol. This function provides | |
4902 | a clean way to get from the download target to the remote target. | |
4903 | It's basically just a wrapper so that we don't have to expose any | |
4904 | of the internal workings of remote.c. | |
4905 | ||
4906 | Prior to calling this routine, you should shutdown the current | |
4907 | target code, else you will get the "A program is being debugged | |
4908 | already..." message. Usually a call to pop_target() suffices. */ | |
4909 | ||
4910 | void | |
fba45db2 | 4911 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4912 | { |
4913 | printf_filtered ("Switching to remote protocol\n"); | |
4914 | remote_open (name, from_tty); | |
4915 | } | |
4916 | ||
4917 | /* Other targets want to use the entire remote serial module but with | |
4918 | certain remote_ops overridden. */ | |
4919 | ||
4920 | void | |
fba45db2 KB |
4921 | open_remote_target (char *name, int from_tty, struct target_ops *target, |
4922 | int extended_p) | |
c906108c SS |
4923 | { |
4924 | printf_filtered ("Selecting the %sremote protocol\n", | |
4925 | (extended_p ? "extended-" : "")); | |
4926 | remote_open_1 (name, from_tty, target, extended_p); | |
4927 | } | |
4928 | ||
4929 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4930 | ||
c5aa993b JM |
4931 | static unsigned long crc32_table[256] = |
4932 | {0, 0}; | |
c906108c SS |
4933 | |
4934 | static unsigned long | |
fba45db2 | 4935 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4936 | { |
c5aa993b | 4937 | if (!crc32_table[1]) |
c906108c SS |
4938 | { |
4939 | /* Initialize the CRC table and the decoding table. */ | |
4940 | int i, j; | |
4941 | unsigned int c; | |
4942 | ||
4943 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4944 | { |
4945 | for (c = i << 24, j = 8; j > 0; --j) | |
4946 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4947 | crc32_table[i] = c; | |
4948 | } | |
c906108c SS |
4949 | } |
4950 | ||
4951 | while (len--) | |
4952 | { | |
4953 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4954 | buf++; | |
4955 | } | |
4956 | return crc; | |
4957 | } | |
4958 | ||
4959 | /* compare-sections command | |
4960 | ||
4961 | With no arguments, compares each loadable section in the exec bfd | |
4962 | with the same memory range on the target, and reports mismatches. | |
4963 | Useful for verifying the image on the target against the exec file. | |
4964 | Depends on the target understanding the new "qCRC:" request. */ | |
4965 | ||
e514a9d6 JM |
4966 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4967 | target method (target verify memory) and generic version of the | |
4968 | actual command. This will allow other high-level code (especially | |
4969 | generic_load()) to make use of this target functionality. */ | |
4970 | ||
c906108c | 4971 | static void |
fba45db2 | 4972 | compare_sections_command (char *args, int from_tty) |
c906108c | 4973 | { |
d01949b6 | 4974 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4975 | asection *s; |
4976 | unsigned long host_crc, target_crc; | |
4977 | extern bfd *exec_bfd; | |
4978 | struct cleanup *old_chain; | |
085dd6e6 JM |
4979 | char *tmp; |
4980 | char *sectdata; | |
ce359b09 | 4981 | const char *sectname; |
d01949b6 | 4982 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4983 | bfd_size_type size; |
4984 | bfd_vma lma; | |
4985 | int matched = 0; | |
4986 | int mismatched = 0; | |
4987 | ||
4988 | if (!exec_bfd) | |
4989 | error ("command cannot be used without an exec file"); | |
4990 | if (!current_target.to_shortname || | |
4991 | strcmp (current_target.to_shortname, "remote") != 0) | |
4992 | error ("command can only be used with remote target"); | |
4993 | ||
c5aa993b | 4994 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4995 | { |
4996 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4997 | continue; /* skip non-loadable section */ |
c906108c SS |
4998 | |
4999 | size = bfd_get_section_size_before_reloc (s); | |
5000 | if (size == 0) | |
c5aa993b | 5001 | continue; /* skip zero-length section */ |
c906108c | 5002 | |
ce359b09 | 5003 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5004 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5005 | continue; /* not the section selected by user */ |
c906108c | 5006 | |
c5aa993b | 5007 | matched = 1; /* do this section */ |
c906108c SS |
5008 | lma = s->lma; |
5009 | /* FIXME: assumes lma can fit into long */ | |
5010 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
5011 | putpkt (buf); | |
5012 | ||
5013 | /* be clever; compute the host_crc before waiting for target reply */ | |
5014 | sectdata = xmalloc (size); | |
b8c9b27d | 5015 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5016 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5017 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5018 | ||
d01949b6 | 5019 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5020 | if (buf[0] == 'E') |
5021 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
5022 | sectname, lma, lma + size); | |
5023 | if (buf[0] != 'C') | |
5024 | error ("remote target does not support this operation"); | |
5025 | ||
5026 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
5027 | target_crc = target_crc * 16 + fromhex (*tmp); | |
5028 | ||
d4f3574e SS |
5029 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5030 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5031 | if (host_crc == target_crc) |
5032 | printf_filtered ("matched.\n"); | |
5033 | else | |
c5aa993b JM |
5034 | { |
5035 | printf_filtered ("MIS-MATCHED!\n"); | |
5036 | mismatched++; | |
5037 | } | |
c906108c SS |
5038 | |
5039 | do_cleanups (old_chain); | |
5040 | } | |
5041 | if (mismatched > 0) | |
5042 | warning ("One or more sections of the remote executable does not match\n\ | |
5043 | the loaded file\n"); | |
5044 | if (args && !matched) | |
5045 | printf_filtered ("No loaded section named '%s'.\n", args); | |
5046 | } | |
5047 | ||
5048 | static int | |
fba45db2 | 5049 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c | 5050 | { |
d01949b6 | 5051 | struct remote_state *rs = get_remote_state (); |
c906108c | 5052 | int i; |
d01949b6 | 5053 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 5054 | char *p2 = &buf2[0]; |
c906108c | 5055 | |
c5aa993b | 5056 | if (!bufsiz) |
c906108c SS |
5057 | error ("null pointer to remote bufer size specified"); |
5058 | ||
d01949b6 | 5059 | /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let |
c906108c SS |
5060 | the caller know and return what the minimum size is */ |
5061 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
d01949b6 | 5062 | if (*bufsiz < (rs->remote_packet_size)) |
c906108c | 5063 | { |
d01949b6 | 5064 | *bufsiz = (rs->remote_packet_size); |
c906108c SS |
5065 | return -1; |
5066 | } | |
5067 | ||
5068 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 5069 | if (!remote_desc) |
c906108c SS |
5070 | error ("remote query is only available after target open"); |
5071 | ||
5072 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 5073 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
5074 | error ("invalid remote query type"); |
5075 | ||
c5aa993b | 5076 | if (!buf) |
c906108c SS |
5077 | error ("null remote query specified"); |
5078 | ||
c5aa993b | 5079 | if (!outbuf) |
c906108c SS |
5080 | error ("remote query requires a buffer to receive data"); |
5081 | ||
5082 | outbuf[0] = '\0'; | |
5083 | ||
5084 | *p2++ = 'q'; | |
5085 | *p2++ = query_type; | |
5086 | ||
5087 | /* we used one buffer char for the remote protocol q command and another | |
5088 | for the query type. As the remote protocol encapsulation uses 4 chars | |
5089 | plus one extra in case we are debugging (remote_debug), | |
5090 | we have PBUFZIZ - 7 left to pack the query string */ | |
5091 | i = 0; | |
d01949b6 | 5092 | while (buf[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c SS |
5093 | { |
5094 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
5095 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
5096 | error ("illegal characters in query string"); | |
c906108c SS |
5097 | |
5098 | *p2++ = buf[i]; | |
5099 | i++; | |
5100 | } | |
5101 | *p2 = buf[i]; | |
5102 | ||
c5aa993b | 5103 | if (buf[i]) |
c906108c SS |
5104 | error ("query larger than available buffer"); |
5105 | ||
5106 | i = putpkt (buf2); | |
c5aa993b JM |
5107 | if (i < 0) |
5108 | return i; | |
c906108c | 5109 | |
c2d11a7d | 5110 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
5111 | |
5112 | return 0; | |
5113 | } | |
5114 | ||
96baa820 JM |
5115 | static void |
5116 | remote_rcmd (char *command, | |
d9fcf2fb | 5117 | struct ui_file *outbuf) |
96baa820 | 5118 | { |
d01949b6 | 5119 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5120 | int i; |
d01949b6 | 5121 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5122 | char *p = buf; |
5123 | ||
5124 | if (!remote_desc) | |
5125 | error ("remote rcmd is only available after target open"); | |
5126 | ||
7be570e7 JM |
5127 | /* Send a NULL command across as an empty command */ |
5128 | if (command == NULL) | |
5129 | command = ""; | |
5130 | ||
96baa820 JM |
5131 | /* The query prefix */ |
5132 | strcpy (buf, "qRcmd,"); | |
5133 | p = strchr (buf, '\0'); | |
5134 | ||
d01949b6 | 5135 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5136 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5137 | ||
5138 | /* Encode the actual command */ | |
30559e10 | 5139 | bin2hex (command, p, 0); |
96baa820 JM |
5140 | |
5141 | if (putpkt (buf) < 0) | |
5142 | error ("Communication problem with target\n"); | |
5143 | ||
5144 | /* get/display the response */ | |
5145 | while (1) | |
5146 | { | |
5147 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
5148 | buf[0] = '\0'; | |
d01949b6 | 5149 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5150 | if (buf[0] == '\0') |
5151 | error ("Target does not support this command\n"); | |
5152 | if (buf[0] == 'O' && buf[1] != 'K') | |
5153 | { | |
5154 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
5155 | continue; | |
5156 | } | |
5157 | if (strcmp (buf, "OK") == 0) | |
5158 | break; | |
7be570e7 JM |
5159 | if (strlen (buf) == 3 && buf[0] == 'E' |
5160 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5161 | { | |
5162 | error ("Protocol error with Rcmd"); | |
5163 | } | |
96baa820 JM |
5164 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5165 | { | |
5166 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5167 | fputc_unfiltered (c, outbuf); | |
5168 | } | |
5169 | break; | |
5170 | } | |
5171 | } | |
5172 | ||
c906108c | 5173 | static void |
fba45db2 | 5174 | packet_command (char *args, int from_tty) |
c906108c | 5175 | { |
d01949b6 AC |
5176 | struct remote_state *rs = get_remote_state (); |
5177 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5178 | |
c5aa993b | 5179 | if (!remote_desc) |
c906108c SS |
5180 | error ("command can only be used with remote target"); |
5181 | ||
c5aa993b | 5182 | if (!args) |
c906108c SS |
5183 | error ("remote-packet command requires packet text as argument"); |
5184 | ||
5185 | puts_filtered ("sending: "); | |
5186 | print_packet (args); | |
5187 | puts_filtered ("\n"); | |
5188 | putpkt (args); | |
5189 | ||
d01949b6 | 5190 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5191 | puts_filtered ("received: "); |
5192 | print_packet (buf); | |
5193 | puts_filtered ("\n"); | |
5194 | } | |
5195 | ||
5196 | #if 0 | |
5197 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
5198 | ||
a14ed312 | 5199 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5200 | |
a14ed312 | 5201 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5202 | |
a14ed312 | 5203 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5204 | |
a14ed312 | 5205 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5206 | |
a14ed312 | 5207 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 5208 | |
a14ed312 | 5209 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5210 | |
a14ed312 | 5211 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5212 | |
a14ed312 | 5213 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5214 | |
a14ed312 | 5215 | static void init_remote_threadtests (void); |
c906108c | 5216 | |
c5aa993b | 5217 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5218 | |
5219 | static void | |
fba45db2 | 5220 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5221 | { |
5222 | int sample_thread = SAMPLE_THREAD; | |
5223 | ||
5224 | printf_filtered ("Remote threadset test\n"); | |
5225 | set_thread (sample_thread, 1); | |
5226 | } | |
5227 | ||
5228 | ||
5229 | static void | |
fba45db2 | 5230 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5231 | { |
5232 | int sample_thread = SAMPLE_THREAD; | |
5233 | ||
39f77062 | 5234 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5235 | printf_filtered ("PASS: Thread alive test\n"); |
5236 | else | |
5237 | printf_filtered ("FAIL: Thread alive test\n"); | |
5238 | } | |
5239 | ||
a14ed312 | 5240 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5241 | |
5242 | void | |
fba45db2 | 5243 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5244 | { |
5245 | char hexid[20]; | |
5246 | ||
5247 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5248 | hexid[16] = 0; | |
5249 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5250 | } | |
5251 | ||
5252 | static void | |
fba45db2 | 5253 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5254 | { |
5255 | int startflag = 1; | |
5256 | threadref nextthread; | |
5257 | int done, result_count; | |
5258 | threadref threadlist[3]; | |
5259 | ||
5260 | printf_filtered ("Remote Threadlist test\n"); | |
5261 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5262 | &result_count, &threadlist[0])) | |
5263 | printf_filtered ("FAIL: threadlist test\n"); | |
5264 | else | |
5265 | { | |
5266 | threadref *scan = threadlist; | |
5267 | threadref *limit = scan + result_count; | |
5268 | ||
5269 | while (scan < limit) | |
5270 | output_threadid (" thread ", scan++); | |
5271 | } | |
5272 | } | |
5273 | ||
5274 | void | |
fba45db2 | 5275 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5276 | { |
5277 | output_threadid ("Threadid: ", &info->threadid); | |
5278 | printf_filtered ("Name: %s\n ", info->shortname); | |
5279 | printf_filtered ("State: %s\n", info->display); | |
5280 | printf_filtered ("other: %s\n\n", info->more_display); | |
5281 | } | |
5282 | ||
5283 | int | |
fba45db2 | 5284 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5285 | { |
5286 | int result; | |
5287 | int set; | |
5288 | struct gdb_ext_thread_info threadinfo; | |
5289 | ||
5290 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5291 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5292 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5293 | display_thread_info (&threadinfo); | |
5294 | return result; | |
5295 | } | |
5296 | ||
5297 | static void | |
fba45db2 | 5298 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5299 | { |
5300 | int athread = SAMPLE_THREAD; | |
5301 | threadref thread; | |
5302 | int set; | |
5303 | ||
5304 | int_to_threadref (&thread, athread); | |
5305 | printf_filtered ("Remote Threadinfo test\n"); | |
5306 | if (!get_and_display_threadinfo (&thread)) | |
5307 | printf_filtered ("FAIL cannot get thread info\n"); | |
5308 | } | |
5309 | ||
5310 | static int | |
fba45db2 | 5311 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5312 | { |
5313 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5314 | return get_and_display_threadinfo (ref); | |
5315 | } | |
5316 | ||
5317 | static void | |
fba45db2 | 5318 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5319 | { |
5320 | printf_filtered ("Remote Threadlist update test\n"); | |
5321 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5322 | } | |
5323 | ||
5324 | static void | |
5325 | init_remote_threadtests (void) | |
5326 | { | |
5327 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5328 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5329 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5330 | "Fetch and display info about one thread"); | |
5331 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5332 | "Test setting to a different thread"); | |
5333 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5334 | "Iterate through updating all remote thread info"); | |
5335 | add_com ("talive", class_obscure, threadalive_test, | |
5336 | " Remote thread alive test "); | |
5337 | } | |
5338 | ||
5339 | #endif /* 0 */ | |
5340 | ||
f3fb8c85 MS |
5341 | /* Convert a thread ID to a string. Returns the string in a static |
5342 | buffer. */ | |
5343 | ||
5344 | static char * | |
39f77062 | 5345 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5346 | { |
5347 | static char buf[30]; | |
5348 | ||
39f77062 | 5349 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5350 | return buf; |
5351 | } | |
5352 | ||
c906108c | 5353 | static void |
fba45db2 | 5354 | init_remote_ops (void) |
c906108c | 5355 | { |
c5aa993b | 5356 | remote_ops.to_shortname = "remote"; |
c906108c | 5357 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5358 | remote_ops.to_doc = |
c906108c | 5359 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5360 | Specify the serial device it is connected to\n\ |
5361 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5362 | remote_ops.to_open = remote_open; |
5363 | remote_ops.to_close = remote_close; | |
c906108c | 5364 | remote_ops.to_detach = remote_detach; |
c5aa993b | 5365 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5366 | remote_ops.to_wait = remote_wait; |
5367 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5368 | remote_ops.to_store_registers = remote_store_registers; | |
5369 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5370 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5371 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5372 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5373 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5374 | remote_ops.to_kill = remote_kill; |
5375 | remote_ops.to_load = generic_load; | |
c906108c SS |
5376 | remote_ops.to_mourn_inferior = remote_mourn; |
5377 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5378 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5379 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5380 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c SS |
5381 | remote_ops.to_stop = remote_stop; |
5382 | remote_ops.to_query = remote_query; | |
96baa820 | 5383 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5384 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5385 | remote_ops.to_has_all_memory = 1; |
5386 | remote_ops.to_has_memory = 1; | |
5387 | remote_ops.to_has_stack = 1; | |
5388 | remote_ops.to_has_registers = 1; | |
5389 | remote_ops.to_has_execution = 1; | |
5390 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5391 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5392 | } |
5393 | ||
5394 | /* Set up the extended remote vector by making a copy of the standard | |
5395 | remote vector and adding to it. */ | |
5396 | ||
5397 | static void | |
fba45db2 | 5398 | init_extended_remote_ops (void) |
c906108c SS |
5399 | { |
5400 | extended_remote_ops = remote_ops; | |
5401 | ||
0f71a2f6 | 5402 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5403 | extended_remote_ops.to_longname = |
c906108c | 5404 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5405 | extended_remote_ops.to_doc = |
c906108c SS |
5406 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5407 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5408 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5409 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5410 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5411 | } |
5412 | ||
5413 | /* | |
5414 | * Command: info remote-process | |
5415 | * | |
5416 | * This implements Cisco's version of the "info proc" command. | |
5417 | * | |
5418 | * This query allows the target stub to return an arbitrary string | |
5419 | * (or strings) giving arbitrary information about the target process. | |
5420 | * This is optional; the target stub isn't required to implement it. | |
5421 | * | |
5422 | * Syntax: qfProcessInfo request first string | |
5423 | * qsProcessInfo request subsequent string | |
5424 | * reply: 'O'<hex-encoded-string> | |
5425 | * 'l' last reply (empty) | |
5426 | */ | |
5427 | ||
5428 | static void | |
c2d11a7d | 5429 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5430 | { |
d01949b6 AC |
5431 | struct remote_state *rs = get_remote_state (); |
5432 | char *buf = alloca (rs->remote_packet_size); | |
0f71a2f6 JM |
5433 | |
5434 | if (remote_desc == 0) | |
5435 | error ("Command can only be used when connected to the remote target."); | |
5436 | ||
5437 | putpkt ("qfProcessInfo"); | |
d01949b6 | 5438 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 | 5439 | if (buf[0] == 0) |
c5aa993b | 5440 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5441 | |
5442 | if (buf[0] == 'E') | |
5443 | error ("info proc: target error."); | |
5444 | ||
c5aa993b | 5445 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5446 | { |
5447 | remote_console_output (&buf[1]); | |
5448 | putpkt ("qsProcessInfo"); | |
d01949b6 | 5449 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 JM |
5450 | } |
5451 | } | |
5452 | ||
5453 | /* | |
5454 | * Target Cisco | |
5455 | */ | |
5456 | ||
5457 | static void | |
c2d11a7d | 5458 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 JM |
5459 | { |
5460 | if (name == 0) | |
22e04375 AC |
5461 | error ("To open a remote debug connection, you need to specify what \n" |
5462 | "device is attached to the remote system (e.g. host:port)."); | |
0f71a2f6 | 5463 | |
6426a772 JM |
5464 | /* See FIXME above */ |
5465 | wait_forever_enabled_p = 1; | |
5466 | ||
0f71a2f6 JM |
5467 | target_preopen (from_tty); |
5468 | ||
5469 | unpush_target (&remote_cisco_ops); | |
5470 | ||
2cd58942 | 5471 | remote_desc = serial_open (name); |
0f71a2f6 JM |
5472 | if (!remote_desc) |
5473 | perror_with_name (name); | |
5474 | ||
5475 | /* | |
5476 | * If a baud rate was specified on the gdb command line it will | |
5477 | * be greater than the initial value of -1. If it is, use it otherwise | |
5478 | * default to 9600 | |
5479 | */ | |
5480 | ||
5481 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
2cd58942 | 5482 | if (serial_setbaudrate (remote_desc, baud_rate)) |
0f71a2f6 | 5483 | { |
2cd58942 | 5484 | serial_close (remote_desc); |
0f71a2f6 JM |
5485 | perror_with_name (name); |
5486 | } | |
5487 | ||
2cd58942 | 5488 | serial_raw (remote_desc); |
0f71a2f6 JM |
5489 | |
5490 | /* If there is something sitting in the buffer we might take it as a | |
5491 | response to a command, which would be bad. */ | |
2cd58942 | 5492 | serial_flush_input (remote_desc); |
0f71a2f6 JM |
5493 | |
5494 | if (from_tty) | |
5495 | { | |
5496 | puts_filtered ("Remote debugging using "); | |
5497 | puts_filtered (name); | |
5498 | puts_filtered ("\n"); | |
5499 | } | |
5500 | ||
5501 | remote_cisco_mode = 1; | |
5502 | ||
5503 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5504 | ||
d471ea57 | 5505 | init_all_packet_configs (); |
0f71a2f6 | 5506 | |
c5aa993b | 5507 | general_thread = -2; |
0f71a2f6 JM |
5508 | continue_thread = -2; |
5509 | ||
9d1f7ab2 MS |
5510 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5511 | use_threadinfo_query = 1; | |
5512 | use_threadextra_query = 1; | |
5513 | ||
0f71a2f6 JM |
5514 | /* Without this, some commands which require an active target (such |
5515 | as kill) won't work. This variable serves (at least) double duty | |
5516 | as both the pid of the target process (if it has such), and as a | |
5517 | flag indicating that a target is active. These functions should | |
5518 | be split out into seperate variables, especially since GDB will | |
5519 | someday have a notion of debugging several processes. */ | |
39f77062 | 5520 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
0f71a2f6 JM |
5521 | |
5522 | /* Start the remote connection; if error (0), discard this target. */ | |
5523 | ||
c5aa993b JM |
5524 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
5525 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
5526 | RETURN_MASK_ALL)) |
5527 | { | |
5528 | pop_target (); | |
5529 | return; | |
5530 | } | |
5531 | } | |
5532 | ||
5533 | static void | |
c2d11a7d | 5534 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5535 | { |
5536 | remote_cisco_mode = 0; | |
5537 | remote_close (quitting); | |
5538 | } | |
5539 | ||
c5aa993b | 5540 | static void |
8ab86381 | 5541 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5542 | { |
5543 | remote_mourn_1 (&remote_cisco_ops); | |
5544 | } | |
5545 | ||
c5aa993b JM |
5546 | enum |
5547 | { | |
5548 | READ_MORE, | |
5549 | FATAL_ERROR, | |
5550 | ENTER_DEBUG, | |
0f71a2f6 | 5551 | DISCONNECT_TELNET |
c5aa993b JM |
5552 | } |
5553 | minitelnet_return; | |
0f71a2f6 | 5554 | |
1ff9c3d6 AC |
5555 | /* Shared between readsocket() and readtty(). The size is arbitrary, |
5556 | however all targets are known to support a 400 character packet. */ | |
5557 | static char tty_input[400]; | |
0f71a2f6 JM |
5558 | |
5559 | static int escape_count; | |
5560 | static int echo_check; | |
5561 | extern int quit_flag; | |
5562 | ||
5563 | static int | |
c2d11a7d | 5564 | readsocket (void) |
0f71a2f6 JM |
5565 | { |
5566 | int data; | |
5567 | ||
5568 | /* Loop until the socket doesn't have any more data */ | |
5569 | ||
c5aa993b | 5570 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5571 | { |
5572 | /* Check for the escape sequence */ | |
c5aa993b | 5573 | if (data == '|') |
0f71a2f6 JM |
5574 | { |
5575 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5576 | if (++escape_count == 4) |
0f71a2f6 JM |
5577 | { |
5578 | return ENTER_DEBUG; | |
5579 | } | |
c5aa993b JM |
5580 | else |
5581 | { /* This is a '|', but not the fourth in a row. | |
5582 | Continue without echoing it. If it isn't actually | |
5583 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5584 | continue; |
5585 | } | |
5586 | } | |
c5aa993b JM |
5587 | else |
5588 | /* Not a '|' */ | |
5589 | { | |
0f71a2f6 JM |
5590 | /* Ensure any pending '|'s are flushed. */ |
5591 | ||
c5aa993b JM |
5592 | for (; escape_count > 0; escape_count--) |
5593 | putchar ('|'); | |
0f71a2f6 | 5594 | } |
0f71a2f6 | 5595 | |
c5aa993b JM |
5596 | if (data == '\r') /* If this is a return character, */ |
5597 | continue; /* - just supress it. */ | |
5598 | ||
5599 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5600 | { |
5601 | if (tty_input[echo_check] == data) | |
5602 | { | |
1ff9c3d6 | 5603 | gdb_assert (echo_check <= sizeof (tty_input)); |
c5aa993b JM |
5604 | echo_check++; /* Character matched user input: */ |
5605 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5606 | } |
c5aa993b JM |
5607 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5608 | { /* End of the line (and of echo checking). */ | |
5609 | echo_check = -1; /* No more echo supression */ | |
5610 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5611 | } |
5612 | else | |
c5aa993b JM |
5613 | { /* Failed check for echo of user input. |
5614 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5615 | int j; |
5616 | ||
c5aa993b | 5617 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5618 | putchar (tty_input[j]); |
5619 | echo_check = -1; | |
5620 | } | |
5621 | } | |
c5aa993b | 5622 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5623 | } |
5624 | ||
c5aa993b JM |
5625 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5626 | return READ_MORE; /* Try to read some more */ | |
5627 | else | |
5628 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5629 | } |
5630 | ||
5631 | static int | |
c2d11a7d | 5632 | readtty (void) |
0f71a2f6 | 5633 | { |
0f71a2f6 JM |
5634 | int tty_bytecount; |
5635 | ||
5636 | /* First, read a buffer full from the terminal */ | |
5637 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5638 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5639 | { |
5640 | perror ("readtty: read failed"); | |
5641 | return FATAL_ERROR; | |
5642 | } | |
5643 | ||
5644 | /* Remove a quoted newline. */ | |
5645 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5646 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5647 | { | |
c5aa993b JM |
5648 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5649 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5650 | } |
5651 | ||
5652 | /* Turn trailing newlines into returns */ | |
5653 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5654 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5655 | |
5656 | /* If the line consists of a ~, enter debugging mode. */ | |
5657 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5658 | return ENTER_DEBUG; | |
5659 | ||
5660 | /* Make this a zero terminated string and write it out */ | |
5661 | tty_input[tty_bytecount] = 0; | |
2cd58942 | 5662 | if (serial_write (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5663 | { |
5664 | perror_with_name ("readtty: write failed"); | |
5665 | return FATAL_ERROR; | |
5666 | } | |
5667 | ||
5668 | return READ_MORE; | |
5669 | } | |
5670 | ||
5671 | static int | |
c2d11a7d | 5672 | minitelnet (void) |
0f71a2f6 JM |
5673 | { |
5674 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5675 | int tablesize; /* max number of FDs for select */ |
5676 | int status; | |
5677 | int quit_count = 0; | |
0f71a2f6 JM |
5678 | |
5679 | extern int escape_count; /* global shared by readsocket */ | |
5680 | extern int echo_check; /* ditto */ | |
5681 | ||
5682 | escape_count = 0; | |
c5aa993b | 5683 | echo_check = -1; |
0f71a2f6 JM |
5684 | |
5685 | tablesize = 8 * sizeof (input); | |
5686 | ||
c5aa993b | 5687 | for (;;) |
0f71a2f6 JM |
5688 | { |
5689 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5690 | this must be done *before* the select as there may be |
5691 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5692 | |
c5aa993b | 5693 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5694 | { |
5695 | error ("Debugging terminated by communications error"); | |
5696 | } | |
c5aa993b | 5697 | else if (status != READ_MORE) |
0f71a2f6 JM |
5698 | { |
5699 | return (status); | |
5700 | } | |
5701 | ||
c5aa993b | 5702 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5703 | |
5704 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5705 | |
0f71a2f6 | 5706 | FD_ZERO (&input); |
c5aa993b | 5707 | FD_SET (fileno (stdin), &input); |
2cd58942 | 5708 | FD_SET (deprecated_serial_fd (remote_desc), &input); |
0f71a2f6 JM |
5709 | |
5710 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5711 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5712 | { |
5713 | error ("Communications error on select %d", errno); | |
5714 | } | |
5715 | ||
5716 | /* Handle Control-C typed */ | |
5717 | ||
c5aa993b | 5718 | if (quit_flag) |
0f71a2f6 JM |
5719 | { |
5720 | if ((++quit_count) == 2) | |
5721 | { | |
5722 | if (query ("Interrupt GDB? ")) | |
5723 | { | |
5724 | printf_filtered ("Interrupted by user.\n"); | |
5725 | return_to_top_level (RETURN_QUIT); | |
5726 | } | |
5727 | quit_count = 0; | |
5728 | } | |
5729 | quit_flag = 0; | |
5730 | ||
5731 | if (remote_break) | |
2cd58942 | 5732 | serial_send_break (remote_desc); |
0f71a2f6 | 5733 | else |
2cd58942 | 5734 | serial_write (remote_desc, "\003", 1); |
0f71a2f6 JM |
5735 | |
5736 | continue; | |
5737 | } | |
5738 | ||
5739 | /* Handle console input */ | |
5740 | ||
c5aa993b | 5741 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5742 | { |
5743 | quit_count = 0; | |
5744 | echo_check = 0; | |
5745 | status = readtty (); | |
5746 | if (status == READ_MORE) | |
5747 | continue; | |
5748 | ||
5749 | return status; /* telnet session ended */ | |
5750 | } | |
5751 | } | |
5752 | } | |
5753 | ||
39f77062 KB |
5754 | static ptid_t |
5755 | remote_cisco_wait (ptid_t ptid, struct target_waitstatus *status) | |
0f71a2f6 | 5756 | { |
c5aa993b | 5757 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5758 | { |
5759 | error ("Debugging session terminated by protocol error"); | |
5760 | } | |
5761 | putpkt ("?"); | |
39f77062 | 5762 | return remote_wait (ptid, status); |
0f71a2f6 JM |
5763 | } |
5764 | ||
5765 | static void | |
fba45db2 | 5766 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5767 | { |
5768 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5769 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5770 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5771 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5772 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5773 | remote_cisco_ops.to_open = remote_cisco_open; |
5774 | remote_cisco_ops.to_close = remote_cisco_close; | |
5775 | remote_cisco_ops.to_detach = remote_detach; | |
5776 | remote_cisco_ops.to_resume = remote_resume; | |
5777 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5778 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5779 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5780 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5781 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5782 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
5783 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5784 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5785 | remote_cisco_ops.to_kill = remote_kill; |
5786 | remote_cisco_ops.to_load = generic_load; | |
5787 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5788 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5789 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5790 | remote_cisco_ops.to_pid_to_str = remote_pid_to_str; |
5791 | remote_cisco_ops.to_extra_thread_info = remote_threads_extra_info; | |
c5aa993b JM |
5792 | remote_cisco_ops.to_stratum = process_stratum; |
5793 | remote_cisco_ops.to_has_all_memory = 1; | |
5794 | remote_cisco_ops.to_has_memory = 1; | |
5795 | remote_cisco_ops.to_has_stack = 1; | |
5796 | remote_cisco_ops.to_has_registers = 1; | |
5797 | remote_cisco_ops.to_has_execution = 1; | |
5798 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5799 | } |
5800 | ||
6426a772 JM |
5801 | static int |
5802 | remote_can_async_p (void) | |
5803 | { | |
5804 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5805 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5806 | } |
5807 | ||
5808 | static int | |
5809 | remote_is_async_p (void) | |
5810 | { | |
5811 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5812 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5813 | } |
5814 | ||
2acceee2 JM |
5815 | /* Pass the SERIAL event on and up to the client. One day this code |
5816 | will be able to delay notifying the client of an event until the | |
5817 | point where an entire packet has been received. */ | |
5818 | ||
5819 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5820 | static void *async_client_context; | |
5821 | static serial_event_ftype remote_async_serial_handler; | |
5822 | ||
6426a772 | 5823 | static void |
819cc324 | 5824 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5825 | { |
2acceee2 JM |
5826 | /* Don't propogate error information up to the client. Instead let |
5827 | the client find out about the error by querying the target. */ | |
5828 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5829 | } | |
5830 | ||
5831 | static void | |
5832 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5833 | { | |
ed9a39eb | 5834 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5835 | internal_error (__FILE__, __LINE__, |
5836 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5837 | |
2acceee2 JM |
5838 | if (callback != NULL) |
5839 | { | |
2cd58942 | 5840 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5841 | async_client_callback = callback; |
5842 | async_client_context = context; | |
5843 | } | |
5844 | else | |
2cd58942 | 5845 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5846 | } |
5847 | ||
43ff13b4 JM |
5848 | /* Target async and target extended-async. |
5849 | ||
5850 | This are temporary targets, until it is all tested. Eventually | |
5851 | async support will be incorporated int the usual 'remote' | |
5852 | target. */ | |
5853 | ||
5854 | static void | |
c2d11a7d | 5855 | init_remote_async_ops (void) |
43ff13b4 JM |
5856 | { |
5857 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5858 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5859 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5860 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5861 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5862 | remote_async_ops.to_open = remote_async_open; |
5863 | remote_async_ops.to_close = remote_close; | |
5864 | remote_async_ops.to_detach = remote_async_detach; | |
5865 | remote_async_ops.to_resume = remote_async_resume; | |
5866 | remote_async_ops.to_wait = remote_async_wait; | |
5867 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5868 | remote_async_ops.to_store_registers = remote_store_registers; | |
5869 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5870 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5871 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5872 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5873 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
6426a772 JM |
5874 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5875 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5876 | remote_async_ops.to_kill = remote_async_kill; |
5877 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5878 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5879 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5880 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5881 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5882 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 JM |
5883 | remote_async_ops.to_stop = remote_stop; |
5884 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5885 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5886 | remote_async_ops.to_stratum = process_stratum; |
5887 | remote_async_ops.to_has_all_memory = 1; | |
5888 | remote_async_ops.to_has_memory = 1; | |
5889 | remote_async_ops.to_has_stack = 1; | |
5890 | remote_async_ops.to_has_registers = 1; | |
5891 | remote_async_ops.to_has_execution = 1; | |
5892 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5893 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5894 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5895 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5896 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5897 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5898 | } |
5899 | ||
5900 | /* Set up the async extended remote vector by making a copy of the standard | |
5901 | remote vector and adding to it. */ | |
5902 | ||
5903 | static void | |
c2d11a7d | 5904 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5905 | { |
5906 | extended_async_remote_ops = remote_async_ops; | |
5907 | ||
5908 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5909 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5910 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5911 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5912 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5913 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5914 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5915 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5916 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5917 | } | |
5918 | ||
5a2468f5 | 5919 | static void |
c2d11a7d | 5920 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5921 | { |
5a2468f5 JM |
5922 | } |
5923 | ||
d471ea57 AC |
5924 | static void |
5925 | show_remote_cmd (char *args, int from_tty) | |
5926 | { | |
44eaed12 | 5927 | |
d471ea57 | 5928 | show_remote_protocol_Z_packet_cmd (args, from_tty); |
44eaed12 C |
5929 | show_remote_protocol_e_packet_cmd (args, from_tty); |
5930 | show_remote_protocol_E_packet_cmd (args, from_tty); | |
d471ea57 | 5931 | show_remote_protocol_P_packet_cmd (args, from_tty); |
dc8acb97 | 5932 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty); |
d471ea57 AC |
5933 | show_remote_protocol_binary_download_cmd (args, from_tty); |
5934 | } | |
5a2468f5 | 5935 | |
0f71a2f6 | 5936 | static void |
fba45db2 | 5937 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5938 | { |
d696208f | 5939 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5940 | } |
5941 | ||
dc8acb97 MS |
5942 | /* Saved pointer to previous owner of the new_objfile event. */ |
5943 | static void (*remote_new_objfile_chain) (struct objfile *); | |
5944 | ||
5945 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
5946 | static void | |
5947 | remote_new_objfile (struct objfile *objfile) | |
5948 | { | |
5949 | if (remote_desc != 0) /* Have a remote connection */ | |
5950 | { | |
5951 | remote_check_symbols (objfile); | |
5952 | } | |
5953 | /* Call predecessor on chain, if any. */ | |
5954 | if (remote_new_objfile_chain != 0 && | |
5955 | remote_desc == 0) | |
5956 | remote_new_objfile_chain (objfile); | |
5957 | } | |
5958 | ||
c906108c | 5959 | void |
fba45db2 | 5960 | _initialize_remote (void) |
c906108c | 5961 | { |
5a2468f5 JM |
5962 | static struct cmd_list_element *remote_set_cmdlist; |
5963 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5964 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5965 | |
0f71a2f6 | 5966 | /* architecture specific data */ |
d01949b6 AC |
5967 | remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state, |
5968 | free_remote_state); | |
5969 | ||
5970 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5971 | that the remote protocol has been initialized. */ | |
11cf8741 JM |
5972 | register_gdbarch_swap (&remote_address_size, |
5973 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
5974 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
5975 | ||
c906108c SS |
5976 | init_remote_ops (); |
5977 | add_target (&remote_ops); | |
5978 | ||
5979 | init_extended_remote_ops (); | |
5980 | add_target (&extended_remote_ops); | |
cce74817 | 5981 | |
43ff13b4 JM |
5982 | init_remote_async_ops (); |
5983 | add_target (&remote_async_ops); | |
5984 | ||
5985 | init_extended_async_remote_ops (); | |
5986 | add_target (&extended_async_remote_ops); | |
5987 | ||
0f71a2f6 JM |
5988 | init_remote_cisco_ops (); |
5989 | add_target (&remote_cisco_ops); | |
5990 | ||
dc8acb97 MS |
5991 | /* Hook into new objfile notification. */ |
5992 | remote_new_objfile_chain = target_new_objfile_hook; | |
5993 | target_new_objfile_hook = remote_new_objfile; | |
5994 | ||
c906108c SS |
5995 | #if 0 |
5996 | init_remote_threadtests (); | |
5997 | #endif | |
5998 | ||
d471ea57 AC |
5999 | /* set/show remote ... */ |
6000 | ||
5a2468f5 JM |
6001 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
6002 | Remote protocol specific variables\n\ | |
6003 | Configure various remote-protocol specific variables such as\n\ | |
6004 | the packets being used", | |
cff3e48b | 6005 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 6006 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 6007 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
6008 | Remote protocol specific variables\n\ |
6009 | Configure various remote-protocol specific variables such as\n\ | |
6010 | the packets being used", | |
cff3e48b | 6011 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
6012 | 0/*allow-unknown*/, &showlist); |
6013 | ||
c5aa993b | 6014 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 6015 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 6016 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
6017 | &cmdlist); |
6018 | ||
6019 | add_cmd ("packet", class_maintenance, packet_command, | |
6020 | "Send an arbitrary packet to a remote target.\n\ | |
6021 | maintenance packet TEXT\n\ | |
6022 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6023 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6024 | response packet. GDB supplies the initial `$' character, and the\n\ | |
6025 | terminating `#' character and checksum.", | |
6026 | &maintenancelist); | |
6027 | ||
c5aa993b | 6028 | add_show_from_set |
f3796e26 AC |
6029 | (add_set_boolean_cmd ("remotebreak", no_class, &remote_break, |
6030 | "Set whether to send break if interrupted.\n", | |
6031 | &setlist), | |
c906108c SS |
6032 | &showlist); |
6033 | ||
11cf8741 JM |
6034 | /* Install commands for configuring memory read/write packets. */ |
6035 | ||
6036 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
6037 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
6038 | &setlist); | |
4ad5b0f7 | 6039 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
6040 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
6041 | &showlist); | |
6042 | add_cmd ("memory-write-packet-size", no_class, | |
6043 | set_memory_write_packet_size, | |
6044 | "Set the maximum number of bytes per memory-write packet.\n" | |
6045 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6046 | "default packet size. The actual limit is further reduced\n" | |
6047 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6048 | "further restriction and ``limit'' to enable that restriction\n", | |
6049 | &remote_set_cmdlist); | |
6050 | add_cmd ("memory-read-packet-size", no_class, | |
6051 | set_memory_read_packet_size, | |
6052 | "Set the maximum number of bytes per memory-read packet.\n" | |
6053 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6054 | "default packet size. The actual limit is further reduced\n" | |
6055 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6056 | "further restriction and ``limit'' to enable that restriction\n", | |
6057 | &remote_set_cmdlist); | |
6058 | add_cmd ("memory-write-packet-size", no_class, | |
6059 | show_memory_write_packet_size, | |
6060 | "Show the maximum number of bytes per memory-write packet.\n", | |
6061 | &remote_show_cmdlist); | |
6062 | add_cmd ("memory-read-packet-size", no_class, | |
6063 | show_memory_read_packet_size, | |
6064 | "Show the maximum number of bytes per memory-read packet.\n", | |
6065 | &remote_show_cmdlist); | |
c906108c | 6066 | |
c5aa993b | 6067 | add_show_from_set |
c906108c | 6068 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 6069 | var_integer, (char *) &remote_address_size, |
c906108c SS |
6070 | "Set the maximum size of the address (in bits) \ |
6071 | in a memory packet.\n", | |
6072 | &setlist), | |
c5aa993b | 6073 | &showlist); |
c906108c | 6074 | |
96baa820 JM |
6075 | add_packet_config_cmd (&remote_protocol_binary_download, |
6076 | "X", "binary-download", | |
6077 | set_remote_protocol_binary_download_cmd, | |
6078 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
6079 | &remote_set_cmdlist, &remote_show_cmdlist, |
6080 | 1); | |
96baa820 JM |
6081 | #if 0 |
6082 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
6083 | compatibility. */ | |
c5aa993b | 6084 | add_show_from_set |
b83266a0 SS |
6085 | (add_set_cmd ("remotebinarydownload", no_class, |
6086 | var_boolean, (char *) &remote_binary_download, | |
6087 | "Set binary downloads.\n", &setlist), | |
6088 | &showlist); | |
96baa820 | 6089 | #endif |
0f71a2f6 JM |
6090 | |
6091 | add_info ("remote-process", remote_info_process, | |
6092 | "Query the remote system for process info."); | |
6093 | ||
dc8acb97 MS |
6094 | add_packet_config_cmd (&remote_protocol_qSymbol, |
6095 | "qSymbol", "symbol-lookup", | |
6096 | set_remote_protocol_qSymbol_packet_cmd, | |
6097 | show_remote_protocol_qSymbol_packet_cmd, | |
6098 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6099 | 0); | |
6100 | ||
44eaed12 C |
6101 | add_packet_config_cmd (&remote_protocol_e, |
6102 | "e", "step-over-range", | |
6103 | set_remote_protocol_e_packet_cmd, | |
6104 | show_remote_protocol_e_packet_cmd, | |
6105 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6106 | 0); | |
6107 | ||
6108 | add_packet_config_cmd (&remote_protocol_E, | |
6109 | "E", "step-over-range-w-signal", | |
6110 | set_remote_protocol_E_packet_cmd, | |
6111 | show_remote_protocol_E_packet_cmd, | |
6112 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6113 | 0); | |
6114 | ||
d471ea57 AC |
6115 | add_packet_config_cmd (&remote_protocol_P, |
6116 | "P", "set-register", | |
5a2468f5 JM |
6117 | set_remote_protocol_P_packet_cmd, |
6118 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
6119 | &remote_set_cmdlist, &remote_show_cmdlist, |
6120 | 1); | |
6121 | ||
6122 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
6123 | "Z0", "software-breakpoint", | |
6124 | set_remote_protocol_Z_software_bp_packet_cmd, | |
6125 | show_remote_protocol_Z_software_bp_packet_cmd, | |
6126 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6127 | 0); | |
6128 | ||
6129 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
6130 | "Z1", "hardware-breakpoint", | |
6131 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
6132 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
6133 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6134 | 0); | |
6135 | ||
6136 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
6137 | "Z2", "write-watchpoint", | |
6138 | set_remote_protocol_Z_write_wp_packet_cmd, | |
6139 | show_remote_protocol_Z_write_wp_packet_cmd, | |
6140 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6141 | 0); | |
6142 | ||
6143 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
6144 | "Z3", "read-watchpoint", | |
6145 | set_remote_protocol_Z_read_wp_packet_cmd, | |
6146 | show_remote_protocol_Z_read_wp_packet_cmd, | |
6147 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6148 | 0); | |
6149 | ||
6150 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
6151 | "Z4", "access-watchpoint", | |
6152 | set_remote_protocol_Z_access_wp_packet_cmd, | |
6153 | show_remote_protocol_Z_access_wp_packet_cmd, | |
6154 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6155 | 0); | |
6156 | ||
6157 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
6158 | tmpcmd = add_set_auto_boolean_cmd ("Z-packet", class_obscure, | |
6159 | &remote_Z_packet_detect, | |
6160 | "\ | |
6161 | Set use of remote protocol `Z' packets", &remote_set_cmdlist); | |
6162 | tmpcmd->function.sfunc = set_remote_protocol_Z_packet_cmd; | |
6163 | add_cmd ("Z-packet", class_obscure, show_remote_protocol_Z_packet_cmd, | |
6164 | "Show use of remote protocol `Z' packets ", | |
6165 | &remote_show_cmdlist); | |
c906108c | 6166 | } |