Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c AC |
2 | |
3 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, | |
29182b13 DJ |
4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
5 | Free Software Foundation, Inc. | |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c5aa993b | 23 | |
23860348 | 24 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 25 | |
c906108c SS |
26 | #include "defs.h" |
27 | #include "gdb_string.h" | |
28 | #include <ctype.h> | |
29 | #include <fcntl.h> | |
c906108c SS |
30 | #include "inferior.h" |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
60250e8b | 33 | #include "exceptions.h" |
c906108c | 34 | #include "target.h" |
c5aa993b | 35 | /*#include "terminal.h" */ |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "objfiles.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "gdbthread.h" | |
c2c6d25f | 40 | #include "remote.h" |
4e052eda | 41 | #include "regcache.h" |
fd0407d6 | 42 | #include "value.h" |
1ff9c3d6 | 43 | #include "gdb_assert.h" |
c906108c | 44 | |
7a292a7a | 45 | #include <ctype.h> |
9846de1b | 46 | #include <sys/time.h> |
c906108c | 47 | |
43ff13b4 | 48 | #include "event-loop.h" |
c2c6d25f | 49 | #include "event-top.h" |
2acceee2 | 50 | #include "inf-loop.h" |
43ff13b4 | 51 | |
c906108c SS |
52 | #include <signal.h> |
53 | #include "serial.h" | |
54 | ||
6240bebf MS |
55 | #include "gdbcore.h" /* for exec_bfd */ |
56 | ||
449092f6 CV |
57 | #include "remote-fileio.h" |
58 | ||
23860348 | 59 | /* Prototypes for local functions. */ |
6426a772 JM |
60 | static void cleanup_sigint_signal_handler (void *dummy); |
61 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 62 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 63 | |
a14ed312 KB |
64 | static void handle_remote_sigint (int); |
65 | static void handle_remote_sigint_twice (int); | |
66 | static void async_remote_interrupt (gdb_client_data); | |
67 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 68 | |
a14ed312 | 69 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 70 | |
a14ed312 | 71 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 72 | |
a14ed312 KB |
73 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
74 | int len, int should_write, | |
29e57380 | 75 | struct mem_attrib *attrib, |
a14ed312 | 76 | struct target_ops *target); |
c906108c | 77 | |
a14ed312 | 78 | static void remote_prepare_to_store (void); |
c906108c | 79 | |
a14ed312 | 80 | static void remote_fetch_registers (int regno); |
c906108c | 81 | |
39f77062 KB |
82 | static void remote_resume (ptid_t ptid, int step, |
83 | enum target_signal siggnal); | |
84 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 85 | enum target_signal siggnal); |
36918e70 | 86 | static int remote_start_remote (struct ui_out *uiout, void *dummy); |
c906108c | 87 | |
a14ed312 KB |
88 | static void remote_open (char *name, int from_tty); |
89 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 90 | |
a14ed312 KB |
91 | static void extended_remote_open (char *name, int from_tty); |
92 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 93 | |
92d1e331 DJ |
94 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
95 | int async_p); | |
c906108c | 96 | |
a14ed312 | 97 | static void remote_close (int quitting); |
c906108c | 98 | |
a14ed312 | 99 | static void remote_store_registers (int regno); |
c906108c | 100 | |
a14ed312 KB |
101 | static void remote_mourn (void); |
102 | static void remote_async_mourn (void); | |
c906108c | 103 | |
a14ed312 | 104 | static void extended_remote_restart (void); |
c906108c | 105 | |
a14ed312 | 106 | static void extended_remote_mourn (void); |
c906108c | 107 | |
a14ed312 | 108 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 109 | |
c2d11a7d | 110 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 111 | |
a14ed312 | 112 | static int readchar (int timeout); |
c906108c | 113 | |
39f77062 KB |
114 | static ptid_t remote_wait (ptid_t ptid, |
115 | struct target_waitstatus *status); | |
116 | static ptid_t remote_async_wait (ptid_t ptid, | |
117 | struct target_waitstatus *status); | |
c906108c | 118 | |
a14ed312 KB |
119 | static void remote_kill (void); |
120 | static void remote_async_kill (void); | |
c906108c | 121 | |
a14ed312 | 122 | static int tohex (int nib); |
c906108c | 123 | |
a14ed312 | 124 | static void remote_detach (char *args, int from_tty); |
c906108c | 125 | |
a14ed312 | 126 | static void remote_interrupt (int signo); |
c906108c | 127 | |
a14ed312 | 128 | static void remote_interrupt_twice (int signo); |
7a292a7a | 129 | |
a14ed312 | 130 | static void interrupt_query (void); |
c906108c | 131 | |
a14ed312 | 132 | static void set_thread (int, int); |
c906108c | 133 | |
39f77062 | 134 | static int remote_thread_alive (ptid_t); |
c906108c | 135 | |
a14ed312 | 136 | static void get_offsets (void); |
c906108c | 137 | |
c2d11a7d | 138 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 139 | |
a14ed312 | 140 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 141 | |
a14ed312 | 142 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 143 | |
a14ed312 | 144 | static int hexnumlen (ULONGEST num); |
c906108c | 145 | |
a14ed312 | 146 | static void init_remote_ops (void); |
c906108c | 147 | |
a14ed312 | 148 | static void init_extended_remote_ops (void); |
c906108c | 149 | |
a14ed312 | 150 | static void remote_stop (void); |
c906108c | 151 | |
a14ed312 | 152 | static int ishex (int ch, int *val); |
c906108c | 153 | |
a14ed312 | 154 | static int stubhex (int ch); |
c906108c | 155 | |
a14ed312 | 156 | static int hexnumstr (char *, ULONGEST); |
c906108c | 157 | |
a14ed312 | 158 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 159 | |
a14ed312 | 160 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 161 | |
a14ed312 | 162 | static void print_packet (char *); |
c906108c | 163 | |
a14ed312 | 164 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 165 | |
a14ed312 | 166 | static void compare_sections_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static void packet_command (char *, int); |
c906108c | 169 | |
a14ed312 | 170 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 171 | |
39f77062 | 172 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 173 | |
a14ed312 | 174 | static void remote_find_new_threads (void); |
c906108c | 175 | |
a14ed312 | 176 | static void record_currthread (int currthread); |
c906108c | 177 | |
30559e10 | 178 | static int fromhex (int a); |
c906108c | 179 | |
dc8acb97 | 180 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 181 | |
dc8acb97 | 182 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 183 | |
a14ed312 | 184 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 185 | |
a14ed312 | 186 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 187 | |
5a2468f5 | 188 | struct packet_config; |
5a2468f5 | 189 | |
a14ed312 | 190 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 191 | |
d471ea57 | 192 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 193 | |
a14ed312 | 194 | void _initialize_remote (void); |
c906108c | 195 | |
694f61fb | 196 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
197 | target is open()ed, remote.c should create a per-target description |
198 | of the remote protocol using that target's architecture. | |
ce2826aa | 199 | Unfortunately, the target stack doesn't include local state. For |
d01949b6 AC |
200 | the moment keep the information in the target's architecture |
201 | object. Sigh.. */ | |
202 | ||
ad10f812 AC |
203 | struct packet_reg |
204 | { | |
205 | long offset; /* Offset into G packet. */ | |
206 | long regnum; /* GDB's internal register number. */ | |
207 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 208 | int in_g_packet; /* Always part of G packet. */ |
23860348 MS |
209 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
210 | at present. */ | |
ad10f812 AC |
211 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
212 | }; | |
213 | ||
d01949b6 AC |
214 | struct remote_state |
215 | { | |
ad10f812 AC |
216 | /* Description of the remote protocol registers. */ |
217 | long sizeof_g_packet; | |
b323314b AC |
218 | |
219 | /* Description of the remote protocol registers indexed by REGNUM | |
220 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
221 | struct packet_reg *regs; | |
ad10f812 | 222 | |
d01949b6 AC |
223 | /* This is the size (in chars) of the first response to the ``g'' |
224 | packet. It is used as a heuristic when determining the maximum | |
225 | size of memory-read and memory-write packets. A target will | |
226 | typically only reserve a buffer large enough to hold the ``g'' | |
227 | packet. The size does not include packet overhead (headers and | |
23860348 | 228 | trailers). */ |
d01949b6 AC |
229 | long actual_register_packet_size; |
230 | ||
231 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 232 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
233 | long remote_packet_size; |
234 | }; | |
235 | ||
3c3bea1c | 236 | |
d01949b6 AC |
237 | /* Handle for retreving the remote protocol data from gdbarch. */ |
238 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
239 | ||
240 | static struct remote_state * | |
5ae5f592 | 241 | get_remote_state (void) |
d01949b6 | 242 | { |
451fbdda | 243 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
244 | } |
245 | ||
246 | static void * | |
247 | init_remote_state (struct gdbarch *gdbarch) | |
248 | { | |
249 | int regnum; | |
e5e78edc | 250 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state); |
d01949b6 | 251 | |
f42accbe AC |
252 | if (deprecated_register_bytes () != 0) |
253 | rs->sizeof_g_packet = deprecated_register_bytes (); | |
7d58c67d TR |
254 | else |
255 | rs->sizeof_g_packet = 0; | |
ad10f812 | 256 | |
b323314b | 257 | /* Assume a 1:1 regnum<->pnum table. */ |
e5e78edc AC |
258 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
259 | struct packet_reg); | |
b323314b | 260 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 261 | { |
b323314b AC |
262 | struct packet_reg *r = &rs->regs[regnum]; |
263 | r->pnum = regnum; | |
264 | r->regnum = regnum; | |
62700349 | 265 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 266 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 267 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d | 268 | |
23860348 | 269 | /* Compute packet size by accumulating the size of all registers. */ |
f42accbe | 270 | if (deprecated_register_bytes () == 0) |
7d58c67d | 271 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); |
ad10f812 AC |
272 | } |
273 | ||
d01949b6 AC |
274 | /* Default maximum number of characters in a packet body. Many |
275 | remote stubs have a hardwired buffer size of 400 bytes | |
276 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
277 | as the maximum packet-size to ensure that the packet and an extra | |
278 | NUL character can always fit in the buffer. This stops GDB | |
279 | trashing stubs that try to squeeze an extra NUL into what is | |
23860348 | 280 | already a full buffer (As of 1999-12-04 that was most stubs. */ |
d01949b6 AC |
281 | rs->remote_packet_size = 400 - 1; |
282 | ||
ad10f812 AC |
283 | /* Should rs->sizeof_g_packet needs more space than the |
284 | default, adjust the size accordingly. Remember that each byte is | |
285 | encoded as two characters. 32 is the overhead for the packet | |
286 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 287 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 288 | little. */ |
ad10f812 AC |
289 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
290 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
802188a7 | 291 | |
23860348 | 292 | /* This one is filled in when a ``g'' packet is received. */ |
d01949b6 AC |
293 | rs->actual_register_packet_size = 0; |
294 | ||
295 | return rs; | |
296 | } | |
297 | ||
ad10f812 AC |
298 | static struct packet_reg * |
299 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
300 | { | |
b323314b AC |
301 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
302 | return NULL; | |
303 | else | |
ad10f812 | 304 | { |
b323314b AC |
305 | struct packet_reg *r = &rs->regs[regnum]; |
306 | gdb_assert (r->regnum == regnum); | |
307 | return r; | |
ad10f812 | 308 | } |
ad10f812 AC |
309 | } |
310 | ||
311 | static struct packet_reg * | |
312 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
313 | { | |
b323314b AC |
314 | int i; |
315 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 316 | { |
b323314b AC |
317 | struct packet_reg *r = &rs->regs[i]; |
318 | if (r->pnum == pnum) | |
319 | return r; | |
ad10f812 AC |
320 | } |
321 | return NULL; | |
d01949b6 AC |
322 | } |
323 | ||
3c3bea1c GS |
324 | /* FIXME: graces/2002-08-08: These variables should eventually be |
325 | bound to an instance of the target object (as in gdbarch-tdep()), | |
326 | when such a thing exists. */ | |
327 | ||
328 | /* This is set to the data address of the access causing the target | |
329 | to stop for a watchpoint. */ | |
330 | static CORE_ADDR remote_watch_data_address; | |
331 | ||
23860348 | 332 | /* This is non-zero if taregt stopped for a watchpoint. */ |
3c3bea1c GS |
333 | static int remote_stopped_by_watchpoint_p; |
334 | ||
c906108c SS |
335 | |
336 | static struct target_ops remote_ops; | |
337 | ||
338 | static struct target_ops extended_remote_ops; | |
339 | ||
43ff13b4 | 340 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 341 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
342 | static struct target_ops remote_async_ops; |
343 | ||
344 | static struct target_ops extended_async_remote_ops; | |
345 | ||
6426a772 JM |
346 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
347 | ``forever'' still use the normal timeout mechanism. This is | |
348 | currently used by the ASYNC code to guarentee that target reads | |
349 | during the initial connect always time-out. Once getpkt has been | |
350 | modified to return a timeout indication and, in turn | |
351 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 352 | this can go away. */ |
6426a772 JM |
353 | static int wait_forever_enabled_p = 1; |
354 | ||
355 | ||
c906108c SS |
356 | /* This variable chooses whether to send a ^C or a break when the user |
357 | requests program interruption. Although ^C is usually what remote | |
358 | systems expect, and that is the default here, sometimes a break is | |
359 | preferable instead. */ | |
360 | ||
361 | static int remote_break; | |
362 | ||
c906108c SS |
363 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
364 | remote_open knows that we don't have a file open when the program | |
365 | starts. */ | |
819cc324 | 366 | static struct serial *remote_desc = NULL; |
c906108c | 367 | |
c906108c SS |
368 | /* This variable sets the number of bits in an address that are to be |
369 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
370 | leading zeros, the entire address would be sent. This variable | |
371 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
372 | initial implementation of remote.c restricted the address sent in | |
373 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
374 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
375 | address was never sent. Since fixing this bug may cause a break in | |
376 | some remote targets this variable is principly provided to | |
23860348 | 377 | facilitate backward compatibility. */ |
c906108c SS |
378 | |
379 | static int remote_address_size; | |
380 | ||
6426a772 JM |
381 | /* Tempoary to track who currently owns the terminal. See |
382 | target_async_terminal_* for more details. */ | |
383 | ||
384 | static int remote_async_terminal_ours_p; | |
385 | ||
11cf8741 | 386 | \f |
11cf8741 | 387 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
388 | memory read/write packet. MIN ((rs->remote_packet_size), |
389 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
390 | values (fifo overruns, et.al.) and some users need larger values | |
391 | (speed up transfers). The variables ``preferred_*'' (the user | |
392 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 393 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
394 | |
395 | struct memory_packet_config | |
396 | { | |
397 | char *name; | |
398 | long size; | |
399 | int fixed_p; | |
400 | }; | |
401 | ||
402 | /* Compute the current size of a read/write packet. Since this makes | |
403 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
404 | ||
405 | static long | |
406 | get_memory_packet_size (struct memory_packet_config *config) | |
407 | { | |
d01949b6 | 408 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
409 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
410 | law?) that some hosts don't cope very well with large alloca() | |
411 | calls. Eventually the alloca() code will be replaced by calls to | |
412 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 413 | be lifted or removed. */ |
11cf8741 JM |
414 | #ifndef MAX_REMOTE_PACKET_SIZE |
415 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
416 | #endif | |
23860348 | 417 | /* NOTE: 16 is just chosen at random. */ |
11cf8741 JM |
418 | #ifndef MIN_REMOTE_PACKET_SIZE |
419 | #define MIN_REMOTE_PACKET_SIZE 16 | |
420 | #endif | |
421 | long what_they_get; | |
422 | if (config->fixed_p) | |
423 | { | |
424 | if (config->size <= 0) | |
425 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
426 | else | |
427 | what_they_get = config->size; | |
428 | } | |
429 | else | |
430 | { | |
d01949b6 | 431 | what_they_get = (rs->remote_packet_size); |
23860348 | 432 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
433 | if (config->size > 0 |
434 | && what_they_get > config->size) | |
435 | what_they_get = config->size; | |
23860348 | 436 | /* Limit it to the size of the targets ``g'' response. */ |
d01949b6 AC |
437 | if ((rs->actual_register_packet_size) > 0 |
438 | && what_they_get > (rs->actual_register_packet_size)) | |
439 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
440 | } |
441 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
442 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
443 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
444 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
445 | return what_they_get; | |
446 | } | |
447 | ||
448 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 449 | something really big then do a sanity check. */ |
11cf8741 JM |
450 | |
451 | static void | |
452 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
453 | { | |
454 | int fixed_p = config->fixed_p; | |
455 | long size = config->size; | |
456 | if (args == NULL) | |
457 | error ("Argument required (integer, `fixed' or `limited')."); | |
458 | else if (strcmp (args, "hard") == 0 | |
459 | || strcmp (args, "fixed") == 0) | |
460 | fixed_p = 1; | |
461 | else if (strcmp (args, "soft") == 0 | |
462 | || strcmp (args, "limit") == 0) | |
463 | fixed_p = 0; | |
464 | else | |
465 | { | |
466 | char *end; | |
467 | size = strtoul (args, &end, 0); | |
468 | if (args == end) | |
469 | error ("Invalid %s (bad syntax).", config->name); | |
470 | #if 0 | |
471 | /* Instead of explicitly capping the size of a packet to | |
472 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
473 | instead allowed to set the size to something arbitrarily | |
23860348 | 474 | large. */ |
11cf8741 JM |
475 | if (size > MAX_REMOTE_PACKET_SIZE) |
476 | error ("Invalid %s (too large).", config->name); | |
477 | #endif | |
478 | } | |
23860348 | 479 | /* Extra checks? */ |
11cf8741 JM |
480 | if (fixed_p && !config->fixed_p) |
481 | { | |
482 | if (! query ("The target may not be able to correctly handle a %s\n" | |
483 | "of %ld bytes. Change the packet size? ", | |
484 | config->name, size)) | |
485 | error ("Packet size not changed."); | |
486 | } | |
23860348 | 487 | /* Update the config. */ |
11cf8741 JM |
488 | config->fixed_p = fixed_p; |
489 | config->size = size; | |
490 | } | |
491 | ||
492 | static void | |
493 | show_memory_packet_size (struct memory_packet_config *config) | |
494 | { | |
495 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
496 | if (config->fixed_p) | |
497 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
498 | get_memory_packet_size (config)); | |
499 | else | |
500 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
501 | get_memory_packet_size (config)); | |
502 | } | |
503 | ||
504 | static struct memory_packet_config memory_write_packet_config = | |
505 | { | |
506 | "memory-write-packet-size", | |
507 | }; | |
508 | ||
509 | static void | |
510 | set_memory_write_packet_size (char *args, int from_tty) | |
511 | { | |
512 | set_memory_packet_size (args, &memory_write_packet_config); | |
513 | } | |
514 | ||
515 | static void | |
516 | show_memory_write_packet_size (char *args, int from_tty) | |
517 | { | |
518 | show_memory_packet_size (&memory_write_packet_config); | |
519 | } | |
520 | ||
521 | static long | |
522 | get_memory_write_packet_size (void) | |
523 | { | |
524 | return get_memory_packet_size (&memory_write_packet_config); | |
525 | } | |
526 | ||
527 | static struct memory_packet_config memory_read_packet_config = | |
528 | { | |
529 | "memory-read-packet-size", | |
530 | }; | |
531 | ||
532 | static void | |
533 | set_memory_read_packet_size (char *args, int from_tty) | |
534 | { | |
535 | set_memory_packet_size (args, &memory_read_packet_config); | |
536 | } | |
537 | ||
538 | static void | |
539 | show_memory_read_packet_size (char *args, int from_tty) | |
540 | { | |
541 | show_memory_packet_size (&memory_read_packet_config); | |
542 | } | |
543 | ||
544 | static long | |
545 | get_memory_read_packet_size (void) | |
546 | { | |
d01949b6 | 547 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
548 | long size = get_memory_packet_size (&memory_read_packet_config); |
549 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
550 | extra buffer size argument before the memory read size can be | |
23860348 | 551 | increased beyond (rs->remote_packet_size). */ |
d01949b6 AC |
552 | if (size > (rs->remote_packet_size)) |
553 | size = (rs->remote_packet_size); | |
11cf8741 JM |
554 | return size; |
555 | } | |
556 | ||
11cf8741 | 557 | \f |
5a2468f5 JM |
558 | /* Generic configuration support for packets the stub optionally |
559 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 560 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
561 | |
562 | enum packet_support | |
563 | { | |
564 | PACKET_SUPPORT_UNKNOWN = 0, | |
565 | PACKET_ENABLE, | |
566 | PACKET_DISABLE | |
567 | }; | |
568 | ||
5a2468f5 JM |
569 | struct packet_config |
570 | { | |
5a2468f5 JM |
571 | char *name; |
572 | char *title; | |
7f19b9a2 | 573 | enum auto_boolean detect; |
5a2468f5 JM |
574 | enum packet_support support; |
575 | }; | |
576 | ||
d471ea57 | 577 | /* Analyze a packet's return value and update the packet config |
23860348 | 578 | accordingly. */ |
d471ea57 AC |
579 | |
580 | enum packet_result | |
581 | { | |
582 | PACKET_ERROR, | |
583 | PACKET_OK, | |
584 | PACKET_UNKNOWN | |
585 | }; | |
586 | ||
5a2468f5 | 587 | static void |
d471ea57 | 588 | update_packet_config (struct packet_config *config) |
5a2468f5 | 589 | { |
d471ea57 AC |
590 | switch (config->detect) |
591 | { | |
7f19b9a2 | 592 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
593 | config->support = PACKET_ENABLE; |
594 | break; | |
7f19b9a2 | 595 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
596 | config->support = PACKET_DISABLE; |
597 | break; | |
7f19b9a2 | 598 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
599 | config->support = PACKET_SUPPORT_UNKNOWN; |
600 | break; | |
601 | } | |
5a2468f5 JM |
602 | } |
603 | ||
604 | static void | |
fba45db2 | 605 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
606 | { |
607 | char *support = "internal-error"; | |
608 | switch (config->support) | |
609 | { | |
610 | case PACKET_ENABLE: | |
611 | support = "enabled"; | |
612 | break; | |
613 | case PACKET_DISABLE: | |
614 | support = "disabled"; | |
615 | break; | |
616 | case PACKET_SUPPORT_UNKNOWN: | |
617 | support = "unknown"; | |
618 | break; | |
619 | } | |
620 | switch (config->detect) | |
621 | { | |
7f19b9a2 | 622 | case AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
623 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
624 | config->name, config->title, support); | |
625 | break; | |
7f19b9a2 AC |
626 | case AUTO_BOOLEAN_TRUE: |
627 | case AUTO_BOOLEAN_FALSE: | |
8e248173 | 628 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", |
5a2468f5 | 629 | config->name, config->title, support); |
8e248173 | 630 | break; |
5a2468f5 JM |
631 | } |
632 | } | |
633 | ||
634 | static void | |
d471ea57 AC |
635 | add_packet_config_cmd (struct packet_config *config, |
636 | char *name, | |
637 | char *title, | |
e9e68a56 AC |
638 | cmd_sfunc_ftype *set_func, |
639 | cmd_sfunc_ftype *show_func, | |
d471ea57 AC |
640 | struct cmd_list_element **set_remote_list, |
641 | struct cmd_list_element **show_remote_list, | |
642 | int legacy) | |
643 | { | |
644 | struct cmd_list_element *set_cmd; | |
645 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
646 | char *set_doc; |
647 | char *show_doc; | |
3b64bf98 AC |
648 | char *help_doc; |
649 | char *print; | |
d471ea57 | 650 | char *cmd_name; |
5a2468f5 JM |
651 | config->name = name; |
652 | config->title = title; | |
7f19b9a2 | 653 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 654 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
655 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
656 | name, title); | |
657 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
658 | name, title); | |
3b64bf98 AC |
659 | print = xstrprintf ("Current use of remote protocol `%s' (%s) is %%s", |
660 | name, title); | |
d471ea57 | 661 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 662 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 AC |
663 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
664 | &config->detect, set_doc, show_doc, | |
3b64bf98 | 665 | "", print, |
e9e68a56 AC |
666 | set_func, show_func, |
667 | set_remote_list, show_remote_list); | |
23860348 | 668 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
669 | if (legacy) |
670 | { | |
671 | char *legacy_name; | |
b435e160 | 672 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
673 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
674 | set_remote_list); | |
675 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
676 | show_remote_list); | |
677 | } | |
5a2468f5 JM |
678 | } |
679 | ||
d471ea57 AC |
680 | static enum packet_result |
681 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 682 | { |
d471ea57 | 683 | if (buf[0] != '\0') |
5a2468f5 | 684 | { |
d471ea57 | 685 | /* The stub recognized the packet request. Check that the |
23860348 | 686 | operation succeeded. */ |
d471ea57 AC |
687 | switch (config->support) |
688 | { | |
689 | case PACKET_SUPPORT_UNKNOWN: | |
690 | if (remote_debug) | |
691 | fprintf_unfiltered (gdb_stdlog, | |
692 | "Packet %s (%s) is supported\n", | |
693 | config->name, config->title); | |
694 | config->support = PACKET_ENABLE; | |
695 | break; | |
696 | case PACKET_DISABLE: | |
8e65ff28 AC |
697 | internal_error (__FILE__, __LINE__, |
698 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
699 | break; |
700 | case PACKET_ENABLE: | |
701 | break; | |
702 | } | |
703 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
23860348 | 704 | /* "OK" - definitly OK. */ |
d471ea57 AC |
705 | return PACKET_OK; |
706 | if (buf[0] == 'E' | |
707 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
708 | && buf[3] == '\0') | |
23860348 | 709 | /* "Enn" - definitly an error. */ |
d471ea57 | 710 | return PACKET_ERROR; |
23860348 | 711 | /* The packet may or may not be OK. Just assume it is. */ |
d471ea57 AC |
712 | return PACKET_OK; |
713 | } | |
714 | else | |
715 | { | |
23860348 | 716 | /* The stub does not support the packet. */ |
d471ea57 AC |
717 | switch (config->support) |
718 | { | |
719 | case PACKET_ENABLE: | |
7f19b9a2 | 720 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 721 | /* If the stub previously indicated that the packet was |
23860348 | 722 | supported then there is a protocol error.. */ |
d471ea57 AC |
723 | error ("Protocol error: %s (%s) conflicting enabled responses.", |
724 | config->name, config->title); | |
725 | else | |
23860348 | 726 | /* The user set it wrong. */ |
d471ea57 AC |
727 | error ("Enabled packet %s (%s) not recognized by stub", |
728 | config->name, config->title); | |
729 | break; | |
730 | case PACKET_SUPPORT_UNKNOWN: | |
731 | if (remote_debug) | |
732 | fprintf_unfiltered (gdb_stdlog, | |
733 | "Packet %s (%s) is NOT supported\n", | |
734 | config->name, config->title); | |
735 | config->support = PACKET_DISABLE; | |
736 | break; | |
737 | case PACKET_DISABLE: | |
738 | break; | |
739 | } | |
740 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
741 | } |
742 | } | |
743 | ||
23860348 | 744 | /* Should we try the 'vCont' (descriptive resume) request? */ |
506fb367 DJ |
745 | static struct packet_config remote_protocol_vcont; |
746 | ||
747 | static void | |
748 | set_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
749 | struct cmd_list_element *c) | |
750 | { | |
751 | update_packet_config (&remote_protocol_vcont); | |
752 | } | |
753 | ||
754 | static void | |
755 | show_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
756 | struct cmd_list_element *c) | |
757 | { | |
758 | show_packet_config_cmd (&remote_protocol_vcont); | |
759 | } | |
760 | ||
23860348 | 761 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
dc8acb97 MS |
762 | static struct packet_config remote_protocol_qSymbol; |
763 | ||
764 | static void | |
765 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
766 | struct cmd_list_element *c) | |
767 | { | |
768 | update_packet_config (&remote_protocol_qSymbol); | |
769 | } | |
770 | ||
771 | static void | |
e9e68a56 AC |
772 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, |
773 | struct cmd_list_element *c) | |
dc8acb97 MS |
774 | { |
775 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
776 | } | |
777 | ||
5a2468f5 JM |
778 | /* Should we try the 'P' (set register) request? */ |
779 | ||
780 | static struct packet_config remote_protocol_P; | |
781 | ||
782 | static void | |
fba45db2 KB |
783 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
784 | struct cmd_list_element *c) | |
5a2468f5 | 785 | { |
d471ea57 | 786 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
787 | } |
788 | ||
789 | static void | |
e9e68a56 AC |
790 | show_remote_protocol_P_packet_cmd (char *args, int from_tty, |
791 | struct cmd_list_element *c) | |
5a2468f5 JM |
792 | { |
793 | show_packet_config_cmd (&remote_protocol_P); | |
794 | } | |
795 | ||
d471ea57 AC |
796 | /* Should we try one of the 'Z' requests? */ |
797 | ||
798 | enum Z_packet_type | |
799 | { | |
800 | Z_PACKET_SOFTWARE_BP, | |
801 | Z_PACKET_HARDWARE_BP, | |
802 | Z_PACKET_WRITE_WP, | |
803 | Z_PACKET_READ_WP, | |
804 | Z_PACKET_ACCESS_WP, | |
805 | NR_Z_PACKET_TYPES | |
806 | }; | |
96baa820 | 807 | |
d471ea57 AC |
808 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
809 | ||
810 | /* FIXME: Instead of having all these boiler plate functions, the | |
23860348 | 811 | command callback should include a context argument. */ |
d471ea57 AC |
812 | |
813 | static void | |
814 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
815 | struct cmd_list_element *c) | |
816 | { | |
817 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
818 | } | |
819 | ||
820 | static void | |
e9e68a56 AC |
821 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, |
822 | struct cmd_list_element *c) | |
d471ea57 AC |
823 | { |
824 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
825 | } | |
826 | ||
827 | static void | |
828 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
829 | struct cmd_list_element *c) | |
830 | { | |
831 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
832 | } | |
833 | ||
834 | static void | |
e9e68a56 AC |
835 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, |
836 | struct cmd_list_element *c) | |
d471ea57 AC |
837 | { |
838 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
839 | } | |
840 | ||
841 | static void | |
842 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
843 | struct cmd_list_element *c) | |
844 | { | |
845 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
846 | } | |
847 | ||
848 | static void | |
e9e68a56 AC |
849 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, |
850 | struct cmd_list_element *c) | |
d471ea57 AC |
851 | { |
852 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
853 | } | |
854 | ||
855 | static void | |
856 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
857 | struct cmd_list_element *c) | |
858 | { | |
859 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
860 | } | |
861 | ||
862 | static void | |
e9e68a56 AC |
863 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, |
864 | struct cmd_list_element *c) | |
d471ea57 AC |
865 | { |
866 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
867 | } | |
868 | ||
869 | static void | |
870 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
871 | struct cmd_list_element *c) | |
872 | { | |
873 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
874 | } | |
875 | ||
876 | static void | |
e9e68a56 AC |
877 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, |
878 | struct cmd_list_element *c) | |
d471ea57 AC |
879 | { |
880 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
881 | } | |
882 | ||
883 | /* For compatibility with older distributions. Provide a ``set remote | |
23860348 | 884 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 885 | |
7f19b9a2 | 886 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
887 | |
888 | static void | |
fba45db2 KB |
889 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
890 | struct cmd_list_element *c) | |
96baa820 | 891 | { |
d471ea57 AC |
892 | int i; |
893 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
894 | { | |
895 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
896 | update_packet_config (&remote_protocol_Z[i]); | |
897 | } | |
96baa820 JM |
898 | } |
899 | ||
900 | static void | |
e9e68a56 AC |
901 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
902 | struct cmd_list_element *c) | |
96baa820 | 903 | { |
d471ea57 AC |
904 | int i; |
905 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
906 | { | |
907 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
908 | } | |
96baa820 JM |
909 | } |
910 | ||
911 | /* Should we try the 'X' (remote binary download) packet? | |
912 | ||
913 | This variable (available to the user via "set remote X-packet") | |
914 | dictates whether downloads are sent in binary (via the 'X' packet). | |
915 | We assume that the stub can, and attempt to do it. This will be | |
916 | cleared if the stub does not understand it. This switch is still | |
917 | needed, though in cases when the packet is supported in the stub, | |
918 | but the connection does not allow it (i.e., 7-bit serial connection | |
23860348 | 919 | only). */ |
96baa820 JM |
920 | |
921 | static struct packet_config remote_protocol_binary_download; | |
922 | ||
9d1f7ab2 MS |
923 | /* Should we try the 'ThreadInfo' query packet? |
924 | ||
925 | This variable (NOT available to the user: auto-detect only!) | |
926 | determines whether GDB will use the new, simpler "ThreadInfo" | |
927 | query or the older, more complex syntax for thread queries. | |
802188a7 | 928 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
929 | and set to false when the target fails to recognize it). */ |
930 | ||
931 | static int use_threadinfo_query; | |
932 | static int use_threadextra_query; | |
933 | ||
96baa820 JM |
934 | static void |
935 | set_remote_protocol_binary_download_cmd (char *args, | |
936 | int from_tty, | |
937 | struct cmd_list_element *c) | |
938 | { | |
d471ea57 | 939 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
940 | } |
941 | ||
942 | static void | |
e9e68a56 AC |
943 | show_remote_protocol_binary_download_cmd (char *args, int from_tty, |
944 | struct cmd_list_element *c) | |
96baa820 JM |
945 | { |
946 | show_packet_config_cmd (&remote_protocol_binary_download); | |
947 | } | |
948 | ||
23860348 | 949 | /* Should we try the 'qPart:auxv' (target auxiliary vector read) request? */ |
802188a7 RM |
950 | static struct packet_config remote_protocol_qPart_auxv; |
951 | ||
952 | static void | |
953 | set_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
954 | struct cmd_list_element *c) | |
955 | { | |
956 | update_packet_config (&remote_protocol_qPart_auxv); | |
957 | } | |
958 | ||
959 | static void | |
960 | show_remote_protocol_qPart_auxv_packet_cmd (char *args, int from_tty, | |
961 | struct cmd_list_element *c) | |
962 | { | |
963 | show_packet_config_cmd (&remote_protocol_qPart_auxv); | |
964 | } | |
965 | ||
b96ec7ac AC |
966 | static struct packet_config remote_protocol_p; |
967 | ||
968 | static void | |
969 | set_remote_protocol_p_packet_cmd (char *args, int from_tty, | |
970 | struct cmd_list_element *c) | |
971 | { | |
972 | update_packet_config (&remote_protocol_p); | |
973 | } | |
974 | ||
975 | static void | |
976 | show_remote_protocol_p_packet_cmd (char *args, int from_tty, | |
977 | struct cmd_list_element *c) | |
978 | { | |
979 | show_packet_config_cmd (&remote_protocol_p); | |
980 | } | |
981 | ||
982 | ||
c906108c | 983 | |
23860348 | 984 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
985 | static void *sigint_remote_twice_token; |
986 | static void *sigint_remote_token; | |
43ff13b4 | 987 | |
c906108c SS |
988 | /* These are pointers to hook functions that may be set in order to |
989 | modify resume/wait behavior for a particular architecture. */ | |
990 | ||
9a4105ab AC |
991 | void (*deprecated_target_resume_hook) (void); |
992 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
993 | \f |
994 | ||
c5aa993b | 995 | |
c906108c SS |
996 | /* These are the threads which we last sent to the remote system. |
997 | -1 for all or -2 for not sent yet. */ | |
998 | static int general_thread; | |
cce74817 | 999 | static int continue_thread; |
c906108c SS |
1000 | |
1001 | /* Call this function as a result of | |
1002 | 1) A halt indication (T packet) containing a thread id | |
1003 | 2) A direct query of currthread | |
1004 | 3) Successful execution of set thread | |
1005 | */ | |
1006 | ||
1007 | static void | |
fba45db2 | 1008 | record_currthread (int currthread) |
c906108c | 1009 | { |
c906108c | 1010 | general_thread = currthread; |
cce74817 | 1011 | |
c906108c SS |
1012 | /* If this is a new thread, add it to GDB's thread list. |
1013 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1014 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1015 | { |
39f77062 | 1016 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1017 | ui_out_text (uiout, "[New "); |
39f77062 | 1018 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1019 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1020 | } |
c906108c SS |
1021 | } |
1022 | ||
1023 | #define MAGIC_NULL_PID 42000 | |
1024 | ||
1025 | static void | |
fba45db2 | 1026 | set_thread (int th, int gen) |
c906108c | 1027 | { |
d01949b6 AC |
1028 | struct remote_state *rs = get_remote_state (); |
1029 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1030 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1031 | |
1032 | if (state == th) | |
1033 | return; | |
1034 | ||
1035 | buf[0] = 'H'; | |
1036 | buf[1] = gen ? 'g' : 'c'; | |
1037 | if (th == MAGIC_NULL_PID) | |
1038 | { | |
1039 | buf[2] = '0'; | |
1040 | buf[3] = '\0'; | |
1041 | } | |
1042 | else if (th < 0) | |
1043 | sprintf (&buf[2], "-%x", -th); | |
1044 | else | |
1045 | sprintf (&buf[2], "%x", th); | |
1046 | putpkt (buf); | |
d01949b6 | 1047 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1048 | if (gen) |
c5aa993b | 1049 | general_thread = th; |
c906108c | 1050 | else |
cce74817 | 1051 | continue_thread = th; |
c906108c SS |
1052 | } |
1053 | \f | |
1054 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1055 | ||
1056 | static int | |
39f77062 | 1057 | remote_thread_alive (ptid_t ptid) |
c906108c | 1058 | { |
39f77062 | 1059 | int tid = PIDGET (ptid); |
cce74817 | 1060 | char buf[16]; |
c906108c | 1061 | |
cce74817 JM |
1062 | if (tid < 0) |
1063 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1064 | else |
cce74817 | 1065 | sprintf (buf, "T%08x", tid); |
c906108c | 1066 | putpkt (buf); |
c2d11a7d | 1067 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1068 | return (buf[0] == 'O' && buf[1] == 'K'); |
1069 | } | |
1070 | ||
1071 | /* About these extended threadlist and threadinfo packets. They are | |
1072 | variable length packets but, the fields within them are often fixed | |
1073 | length. They are redundent enough to send over UDP as is the | |
1074 | remote protocol in general. There is a matching unit test module | |
1075 | in libstub. */ | |
1076 | ||
cce74817 JM |
1077 | #define OPAQUETHREADBYTES 8 |
1078 | ||
1079 | /* a 64 bit opaque identifier */ | |
1080 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1081 | ||
23860348 MS |
1082 | /* WARNING: This threadref data structure comes from the remote O.S., |
1083 | libstub protocol encoding, and remote.c. it is not particularly | |
1084 | changable. */ | |
cce74817 JM |
1085 | |
1086 | /* Right now, the internal structure is int. We want it to be bigger. | |
1087 | Plan to fix this. | |
c5aa993b | 1088 | */ |
cce74817 | 1089 | |
23860348 | 1090 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1091 | |
9d1f7ab2 | 1092 | /* gdb_ext_thread_info is an internal GDB data structure which is |
23860348 | 1093 | equivalint to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1094 | |
1095 | struct gdb_ext_thread_info | |
c5aa993b | 1096 | { |
23860348 MS |
1097 | threadref threadid; /* External form of thread reference. */ |
1098 | int active; /* Has state interesting to GDB? | |
1099 | regs, stack. */ | |
1100 | char display[256]; /* Brief state display, name, | |
1101 | blocked/syspended. */ | |
1102 | char shortname[32]; /* To be used to name threads. */ | |
1103 | char more_display[256]; /* Long info, statistics, queue depth, | |
1104 | whatever. */ | |
c5aa993b | 1105 | }; |
cce74817 JM |
1106 | |
1107 | /* The volume of remote transfers can be limited by submitting | |
1108 | a mask containing bits specifying the desired information. | |
1109 | Use a union of these values as the 'selection' parameter to | |
1110 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1111 | */ |
cce74817 JM |
1112 | |
1113 | #define TAG_THREADID 1 | |
1114 | #define TAG_EXISTS 2 | |
1115 | #define TAG_DISPLAY 4 | |
1116 | #define TAG_THREADNAME 8 | |
c5aa993b | 1117 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1118 | |
23860348 | 1119 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1120 | |
b2dd6311 | 1121 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1122 | |
a14ed312 | 1123 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1124 | |
a14ed312 | 1125 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1126 | |
23860348 | 1127 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1128 | |
a14ed312 | 1129 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1130 | |
a14ed312 | 1131 | static char *pack_int (char *buf, int value); |
cce74817 | 1132 | |
a14ed312 | 1133 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1134 | |
a14ed312 | 1135 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1136 | |
23860348 | 1137 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1138 | |
23860348 | 1139 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1140 | |
23860348 | 1141 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1142 | |
23860348 | 1143 | static int threadref_to_int (threadref *ref); |
cce74817 | 1144 | |
23860348 | 1145 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1146 | |
23860348 | 1147 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1148 | |
23860348 MS |
1149 | static char *pack_threadinfo_request (char *pkt, int mode, |
1150 | threadref *id); | |
cce74817 | 1151 | |
a14ed312 | 1152 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1153 | threadref *expectedref, |
a14ed312 KB |
1154 | struct gdb_ext_thread_info |
1155 | *info); | |
cce74817 JM |
1156 | |
1157 | ||
23860348 MS |
1158 | static int remote_get_threadinfo (threadref *threadid, |
1159 | int fieldset, /*TAG mask */ | |
a14ed312 | 1160 | struct gdb_ext_thread_info *info); |
cce74817 | 1161 | |
a14ed312 KB |
1162 | static char *pack_threadlist_request (char *pkt, int startflag, |
1163 | int threadcount, | |
23860348 | 1164 | threadref *nextthread); |
cce74817 | 1165 | |
a14ed312 KB |
1166 | static int parse_threadlist_response (char *pkt, |
1167 | int result_limit, | |
23860348 MS |
1168 | threadref *original_echo, |
1169 | threadref *resultlist, | |
1170 | int *doneflag); | |
cce74817 | 1171 | |
a14ed312 | 1172 | static int remote_get_threadlist (int startflag, |
23860348 | 1173 | threadref *nextthread, |
a14ed312 KB |
1174 | int result_limit, |
1175 | int *done, | |
23860348 MS |
1176 | int *result_count, |
1177 | threadref *threadlist); | |
cce74817 | 1178 | |
23860348 | 1179 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1180 | |
a14ed312 KB |
1181 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1182 | void *context, int looplimit); | |
cce74817 | 1183 | |
23860348 | 1184 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1185 | |
23860348 | 1186 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1187 | |
1188 | static const char hexchars[] = "0123456789abcdef"; | |
1189 | ||
1190 | static int | |
fba45db2 | 1191 | ishex (int ch, int *val) |
c906108c SS |
1192 | { |
1193 | if ((ch >= 'a') && (ch <= 'f')) | |
1194 | { | |
1195 | *val = ch - 'a' + 10; | |
1196 | return 1; | |
1197 | } | |
1198 | if ((ch >= 'A') && (ch <= 'F')) | |
1199 | { | |
1200 | *val = ch - 'A' + 10; | |
1201 | return 1; | |
1202 | } | |
1203 | if ((ch >= '0') && (ch <= '9')) | |
1204 | { | |
1205 | *val = ch - '0'; | |
1206 | return 1; | |
1207 | } | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | static int | |
fba45db2 | 1212 | stubhex (int ch) |
c906108c SS |
1213 | { |
1214 | if (ch >= 'a' && ch <= 'f') | |
1215 | return ch - 'a' + 10; | |
1216 | if (ch >= '0' && ch <= '9') | |
1217 | return ch - '0'; | |
1218 | if (ch >= 'A' && ch <= 'F') | |
1219 | return ch - 'A' + 10; | |
1220 | return -1; | |
1221 | } | |
1222 | ||
1223 | static int | |
fba45db2 | 1224 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1225 | { |
1226 | int nibble; | |
1227 | int retval = 0; | |
1228 | ||
1229 | while (fieldlength) | |
1230 | { | |
1231 | nibble = stubhex (*buff++); | |
1232 | retval |= nibble; | |
1233 | fieldlength--; | |
1234 | if (fieldlength) | |
1235 | retval = retval << 4; | |
1236 | } | |
1237 | return retval; | |
1238 | } | |
1239 | ||
1240 | char * | |
fba45db2 | 1241 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1242 | ULONGEST *result) |
c906108c SS |
1243 | { |
1244 | int nibble; | |
1245 | int retval = 0; | |
1246 | ||
1247 | while (ishex (*buff, &nibble)) | |
1248 | { | |
1249 | buff++; | |
1250 | retval = retval << 4; | |
1251 | retval |= nibble & 0x0f; | |
1252 | } | |
1253 | *result = retval; | |
1254 | return buff; | |
1255 | } | |
1256 | ||
1257 | static char * | |
fba45db2 | 1258 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1259 | { |
1260 | ishex (*buf++, val); | |
1261 | return buf; | |
1262 | } | |
1263 | ||
1264 | static char * | |
fba45db2 | 1265 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1266 | { |
1267 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1268 | return buf; | |
1269 | } | |
1270 | ||
1271 | static char * | |
fba45db2 | 1272 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1273 | { |
1274 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1275 | *pkt++ = hexchars[(byte & 0xf)]; | |
1276 | return pkt; | |
1277 | } | |
1278 | ||
1279 | static char * | |
fba45db2 | 1280 | unpack_byte (char *buf, int *value) |
c906108c SS |
1281 | { |
1282 | *value = stub_unpack_int (buf, 2); | |
1283 | return buf + 2; | |
1284 | } | |
1285 | ||
1286 | static char * | |
fba45db2 | 1287 | pack_int (char *buf, int value) |
c906108c SS |
1288 | { |
1289 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1290 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1291 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1292 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1293 | return buf; | |
1294 | } | |
1295 | ||
1296 | static char * | |
fba45db2 | 1297 | unpack_int (char *buf, int *value) |
c906108c SS |
1298 | { |
1299 | *value = stub_unpack_int (buf, 8); | |
1300 | return buf + 8; | |
1301 | } | |
1302 | ||
23860348 | 1303 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1304 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1305 | |
1306 | static char * | |
fba45db2 | 1307 | pack_string (char *pkt, char *string) |
c906108c SS |
1308 | { |
1309 | char ch; | |
1310 | int len; | |
1311 | ||
1312 | len = strlen (string); | |
1313 | if (len > 200) | |
23860348 | 1314 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1315 | pkt = pack_hex_byte (pkt, len); |
1316 | while (len-- > 0) | |
1317 | { | |
1318 | ch = *string++; | |
1319 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1320 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1321 | *pkt++ = ch; |
1322 | } | |
1323 | return pkt; | |
1324 | } | |
1325 | #endif /* 0 (unused) */ | |
1326 | ||
1327 | static char * | |
fba45db2 | 1328 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1329 | { |
1330 | while (length--) | |
1331 | *dest++ = *src++; | |
1332 | *dest = '\0'; | |
1333 | return src; | |
1334 | } | |
1335 | ||
1336 | static char * | |
fba45db2 | 1337 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1338 | { |
1339 | char *limit; | |
1340 | unsigned char *altid; | |
1341 | ||
1342 | altid = (unsigned char *) id; | |
1343 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1344 | while (pkt < limit) | |
1345 | pkt = pack_hex_byte (pkt, *altid++); | |
1346 | return pkt; | |
1347 | } | |
1348 | ||
1349 | ||
1350 | static char * | |
fba45db2 | 1351 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1352 | { |
1353 | char *altref; | |
1354 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1355 | int x, y; | |
1356 | ||
1357 | altref = (char *) id; | |
1358 | ||
1359 | while (inbuf < limit) | |
1360 | { | |
1361 | x = stubhex (*inbuf++); | |
1362 | y = stubhex (*inbuf++); | |
1363 | *altref++ = (x << 4) | y; | |
1364 | } | |
1365 | return inbuf; | |
1366 | } | |
1367 | ||
1368 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1369 | ints. This is due to a mismatch of specifications. We would like | |
1370 | to use 64bit thread references internally. This is an adapter | |
1371 | function. */ | |
1372 | ||
1373 | void | |
fba45db2 | 1374 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1375 | { |
1376 | unsigned char *scan; | |
1377 | ||
1378 | scan = (unsigned char *) id; | |
1379 | { | |
1380 | int i = 4; | |
1381 | while (i--) | |
1382 | *scan++ = 0; | |
1383 | } | |
1384 | *scan++ = (value >> 24) & 0xff; | |
1385 | *scan++ = (value >> 16) & 0xff; | |
1386 | *scan++ = (value >> 8) & 0xff; | |
1387 | *scan++ = (value & 0xff); | |
1388 | } | |
1389 | ||
1390 | static int | |
fba45db2 | 1391 | threadref_to_int (threadref *ref) |
c906108c SS |
1392 | { |
1393 | int i, value = 0; | |
1394 | unsigned char *scan; | |
1395 | ||
1396 | scan = (char *) ref; | |
1397 | scan += 4; | |
1398 | i = 4; | |
1399 | while (i-- > 0) | |
1400 | value = (value << 8) | ((*scan++) & 0xff); | |
1401 | return value; | |
1402 | } | |
1403 | ||
1404 | static void | |
fba45db2 | 1405 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1406 | { |
1407 | int i; | |
1408 | unsigned char *csrc, *cdest; | |
1409 | ||
1410 | csrc = (unsigned char *) src; | |
1411 | cdest = (unsigned char *) dest; | |
1412 | i = 8; | |
1413 | while (i--) | |
1414 | *cdest++ = *csrc++; | |
1415 | } | |
1416 | ||
1417 | static int | |
fba45db2 | 1418 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1419 | { |
23860348 | 1420 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1421 | #if 0 |
1422 | unsigned char *srcp, *destp; | |
1423 | int i, result; | |
1424 | srcp = (char *) src; | |
1425 | destp = (char *) dest; | |
1426 | ||
1427 | result = 1; | |
1428 | while (i-- > 0) | |
1429 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1430 | return result; | |
1431 | #endif | |
1432 | return 1; | |
1433 | } | |
1434 | ||
1435 | /* | |
c5aa993b JM |
1436 | threadid:1, # always request threadid |
1437 | context_exists:2, | |
1438 | display:4, | |
1439 | unique_name:8, | |
1440 | more_display:16 | |
1441 | */ | |
c906108c SS |
1442 | |
1443 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1444 | ||
1445 | static char * | |
fba45db2 | 1446 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1447 | { |
23860348 MS |
1448 | *pkt++ = 'q'; /* Info Query */ |
1449 | *pkt++ = 'P'; /* process or thread info */ | |
1450 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1451 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1452 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1453 | return pkt; |
1454 | } | |
1455 | ||
23860348 | 1456 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1457 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1458 | add more fields as time goes by. */ |
c906108c | 1459 | |
23860348 | 1460 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1461 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1462 | fetch registers and its stack? */ |
c5aa993b | 1463 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1464 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1465 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1466 | the process. */ |
c906108c SS |
1467 | |
1468 | static int | |
fba45db2 KB |
1469 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1470 | struct gdb_ext_thread_info *info) | |
c906108c | 1471 | { |
d01949b6 | 1472 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1473 | int mask, length; |
1474 | unsigned int tag; | |
1475 | threadref ref; | |
d01949b6 | 1476 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1477 | int retval = 1; |
1478 | ||
23860348 | 1479 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1480 | info->active = 0; |
1481 | info->display[0] = '\0'; | |
1482 | info->shortname[0] = '\0'; | |
1483 | info->more_display[0] = '\0'; | |
1484 | ||
23860348 MS |
1485 | /* Assume the characters indicating the packet type have been |
1486 | stripped. */ | |
c906108c SS |
1487 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1488 | pkt = unpack_threadid (pkt, &ref); | |
1489 | ||
1490 | if (mask == 0) | |
1491 | warning ("Incomplete response to threadinfo request\n"); | |
1492 | if (!threadmatch (&ref, expectedref)) | |
23860348 | 1493 | { /* This is an answer to a different request. */ |
c906108c SS |
1494 | warning ("ERROR RMT Thread info mismatch\n"); |
1495 | return 0; | |
1496 | } | |
1497 | copy_threadref (&info->threadid, &ref); | |
1498 | ||
23860348 | 1499 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1500 | |
23860348 MS |
1501 | /* Packets are terminated with nulls. */ |
1502 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1503 | { |
1504 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1505 | pkt = unpack_byte (pkt, &length); /* length */ |
1506 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c SS |
1507 | { |
1508 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1509 | retval = 0; | |
1510 | break; | |
1511 | } | |
1512 | if (tag == TAG_THREADID) | |
1513 | { | |
1514 | if (length != 16) | |
1515 | { | |
1516 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1517 | retval = 0; | |
1518 | break; | |
1519 | } | |
1520 | pkt = unpack_threadid (pkt, &ref); | |
1521 | mask = mask & ~TAG_THREADID; | |
1522 | continue; | |
1523 | } | |
1524 | if (tag == TAG_EXISTS) | |
1525 | { | |
1526 | info->active = stub_unpack_int (pkt, length); | |
1527 | pkt += length; | |
1528 | mask = mask & ~(TAG_EXISTS); | |
1529 | if (length > 8) | |
1530 | { | |
1531 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1532 | retval = 0; | |
1533 | break; | |
1534 | } | |
1535 | continue; | |
1536 | } | |
1537 | if (tag == TAG_THREADNAME) | |
1538 | { | |
1539 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1540 | mask = mask & ~TAG_THREADNAME; | |
1541 | continue; | |
1542 | } | |
1543 | if (tag == TAG_DISPLAY) | |
1544 | { | |
1545 | pkt = unpack_string (pkt, &info->display[0], length); | |
1546 | mask = mask & ~TAG_DISPLAY; | |
1547 | continue; | |
1548 | } | |
1549 | if (tag == TAG_MOREDISPLAY) | |
1550 | { | |
1551 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1552 | mask = mask & ~TAG_MOREDISPLAY; | |
1553 | continue; | |
1554 | } | |
1555 | warning ("ERROR RMT: unknown thread info tag\n"); | |
23860348 | 1556 | break; /* Not a tag we know about. */ |
c906108c SS |
1557 | } |
1558 | return retval; | |
1559 | } | |
1560 | ||
1561 | static int | |
fba45db2 KB |
1562 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1563 | struct gdb_ext_thread_info *info) | |
c906108c | 1564 | { |
d01949b6 | 1565 | struct remote_state *rs = get_remote_state (); |
c906108c | 1566 | int result; |
d01949b6 | 1567 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1568 | |
1569 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1570 | putpkt (threadinfo_pkt); | |
d01949b6 | 1571 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
23860348 MS |
1572 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, |
1573 | threadid, info); | |
c906108c SS |
1574 | return result; |
1575 | } | |
1576 | ||
c906108c SS |
1577 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1578 | ||
1579 | static char * | |
fba45db2 KB |
1580 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1581 | threadref *nextthread) | |
c906108c SS |
1582 | { |
1583 | *pkt++ = 'q'; /* info query packet */ | |
1584 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1585 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1586 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1587 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1588 | *pkt = '\0'; | |
1589 | return pkt; | |
1590 | } | |
1591 | ||
1592 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1593 | ||
1594 | static int | |
fba45db2 KB |
1595 | parse_threadlist_response (char *pkt, int result_limit, |
1596 | threadref *original_echo, threadref *resultlist, | |
1597 | int *doneflag) | |
c906108c | 1598 | { |
d01949b6 | 1599 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1600 | char *limit; |
1601 | int count, resultcount, done; | |
1602 | ||
1603 | resultcount = 0; | |
1604 | /* Assume the 'q' and 'M chars have been stripped. */ | |
23860348 MS |
1605 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); |
1606 | /* done parse past here */ | |
c906108c SS |
1607 | pkt = unpack_byte (pkt, &count); /* count field */ |
1608 | pkt = unpack_nibble (pkt, &done); | |
1609 | /* The first threadid is the argument threadid. */ | |
1610 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1611 | while ((count-- > 0) && (pkt < limit)) | |
1612 | { | |
1613 | pkt = unpack_threadid (pkt, resultlist++); | |
1614 | if (resultcount++ >= result_limit) | |
1615 | break; | |
1616 | } | |
1617 | if (doneflag) | |
1618 | *doneflag = done; | |
1619 | return resultcount; | |
1620 | } | |
1621 | ||
1622 | static int | |
fba45db2 KB |
1623 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1624 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1625 | { |
d01949b6 | 1626 | struct remote_state *rs = get_remote_state (); |
c906108c | 1627 | static threadref echo_nextthread; |
d01949b6 AC |
1628 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1629 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1630 | int result = 1; |
1631 | ||
23860348 | 1632 | /* Trancate result limit to be smaller than the packet size. */ |
d01949b6 AC |
1633 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1634 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1635 | |
1636 | pack_threadlist_request (threadlist_packet, | |
1637 | startflag, result_limit, nextthread); | |
1638 | putpkt (threadlist_packet); | |
d01949b6 | 1639 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1640 | |
1641 | *result_count = | |
1642 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1643 | threadlist, done); | |
1644 | ||
1645 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1646 | { | |
23860348 MS |
1647 | /* FIXME: This is a good reason to drop the packet. */ |
1648 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1649 | /* Possabilities : |
1650 | retransmit immediatly - race conditions | |
1651 | retransmit after timeout - yes | |
1652 | exit | |
1653 | wait for packet, then exit | |
1654 | */ | |
1655 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
23860348 | 1656 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1657 | } |
1658 | if (*result_count <= 0) | |
1659 | { | |
1660 | if (*done != 1) | |
1661 | { | |
1662 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1663 | result = 0; | |
1664 | } | |
1665 | return result; /* break; */ | |
1666 | } | |
1667 | if (*result_count > result_limit) | |
1668 | { | |
1669 | *result_count = 0; | |
1670 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1671 | return 0; | |
1672 | } | |
1673 | return result; | |
1674 | } | |
1675 | ||
23860348 MS |
1676 | /* This is the interface between remote and threads, remotes upper |
1677 | interface. */ | |
c906108c SS |
1678 | |
1679 | /* remote_find_new_threads retrieves the thread list and for each | |
1680 | thread in the list, looks up the thread in GDB's internal list, | |
1681 | ading the thread if it does not already exist. This involves | |
1682 | getting partial thread lists from the remote target so, polling the | |
1683 | quit_flag is required. */ | |
1684 | ||
1685 | ||
23860348 | 1686 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1687 | |
1688 | #define MAXTHREADLISTRESULTS 32 | |
1689 | ||
1690 | static int | |
fba45db2 KB |
1691 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1692 | int looplimit) | |
c906108c SS |
1693 | { |
1694 | int done, i, result_count; | |
1695 | int startflag = 1; | |
1696 | int result = 1; | |
1697 | int loopcount = 0; | |
1698 | static threadref nextthread; | |
1699 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1700 | ||
1701 | done = 0; | |
1702 | while (!done) | |
1703 | { | |
1704 | if (loopcount++ > looplimit) | |
1705 | { | |
1706 | result = 0; | |
1707 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1708 | break; | |
1709 | } | |
1710 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1711 | &done, &result_count, resultthreadlist)) | |
1712 | { | |
1713 | result = 0; | |
1714 | break; | |
1715 | } | |
23860348 | 1716 | /* Clear for later iterations. */ |
c906108c SS |
1717 | startflag = 0; |
1718 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1719 | if (result_count >= 1) | |
1720 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1721 | i = 0; | |
1722 | while (result_count--) | |
1723 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1724 | break; | |
1725 | } | |
1726 | return result; | |
1727 | } | |
1728 | ||
1729 | static int | |
fba45db2 | 1730 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1731 | { |
39f77062 | 1732 | ptid_t ptid; |
c906108c | 1733 | |
39f77062 KB |
1734 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1735 | ||
1736 | if (!in_thread_list (ptid)) | |
1737 | add_thread (ptid); | |
c906108c SS |
1738 | return 1; /* continue iterator */ |
1739 | } | |
1740 | ||
1741 | #define CRAZY_MAX_THREADS 1000 | |
1742 | ||
39f77062 KB |
1743 | static ptid_t |
1744 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1745 | { |
d01949b6 AC |
1746 | struct remote_state *rs = get_remote_state (); |
1747 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1748 | |
1749 | putpkt ("qC"); | |
d01949b6 | 1750 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1751 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1752 | /* Use strtoul here, so we'll correctly parse values whose highest |
1753 | bit is set. The protocol carries them as a simple series of | |
1754 | hex digits; in the absence of a sign, strtol will see such | |
1755 | values as positive numbers out of range for signed 'long', and | |
1756 | return LONG_MAX to indicate an overflow. */ | |
1757 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1758 | else |
1759 | return oldpid; | |
1760 | } | |
1761 | ||
802188a7 RM |
1762 | /* Find new threads for info threads command. |
1763 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1764 | */ |
cce74817 JM |
1765 | |
1766 | static void | |
fba45db2 | 1767 | remote_find_new_threads (void) |
c906108c | 1768 | { |
c5aa993b JM |
1769 | remote_threadlist_iterator (remote_newthread_step, 0, |
1770 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1771 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1772 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1773 | } |
1774 | ||
9d1f7ab2 MS |
1775 | /* |
1776 | * Find all threads for info threads command. | |
1777 | * Uses new thread protocol contributed by Cisco. | |
1778 | * Falls back and attempts to use the older method (above) | |
1779 | * if the target doesn't respond to the new method. | |
1780 | */ | |
1781 | ||
0f71a2f6 JM |
1782 | static void |
1783 | remote_threads_info (void) | |
1784 | { | |
d01949b6 AC |
1785 | struct remote_state *rs = get_remote_state (); |
1786 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1787 | char *bufp; |
0f71a2f6 JM |
1788 | int tid; |
1789 | ||
1790 | if (remote_desc == 0) /* paranoia */ | |
1791 | error ("Command can only be used when connected to the remote target."); | |
1792 | ||
9d1f7ab2 MS |
1793 | if (use_threadinfo_query) |
1794 | { | |
1795 | putpkt ("qfThreadInfo"); | |
1796 | bufp = buf; | |
d01949b6 | 1797 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 | 1798 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1799 | { |
9d1f7ab2 MS |
1800 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1801 | { | |
1802 | do | |
1803 | { | |
c273b20f JB |
1804 | /* Use strtoul here, so we'll correctly parse values |
1805 | whose highest bit is set. The protocol carries | |
1806 | them as a simple series of hex digits; in the | |
1807 | absence of a sign, strtol will see such values as | |
1808 | positive numbers out of range for signed 'long', | |
1809 | and return LONG_MAX to indicate an overflow. */ | |
1810 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1811 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1812 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1813 | } |
1814 | while (*bufp++ == ','); /* comma-separated list */ | |
1815 | putpkt ("qsThreadInfo"); | |
1816 | bufp = buf; | |
d01949b6 | 1817 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1818 | } |
1819 | return; /* done */ | |
1820 | } | |
1821 | } | |
1822 | ||
23860348 | 1823 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1824 | use_threadinfo_query = 0; |
1825 | remote_find_new_threads (); | |
1826 | return; | |
1827 | } | |
1828 | ||
802188a7 | 1829 | /* |
9d1f7ab2 MS |
1830 | * Collect a descriptive string about the given thread. |
1831 | * The target may say anything it wants to about the thread | |
1832 | * (typically info about its blocked / runnable state, name, etc.). | |
1833 | * This string will appear in the info threads display. | |
802188a7 | 1834 | * |
9d1f7ab2 MS |
1835 | * Optional: targets are not required to implement this function. |
1836 | */ | |
1837 | ||
1838 | static char * | |
1839 | remote_threads_extra_info (struct thread_info *tp) | |
1840 | { | |
d01949b6 | 1841 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1842 | int result; |
1843 | int set; | |
1844 | threadref id; | |
1845 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1846 | static char display_buf[100]; /* arbitrary... */ |
d01949b6 | 1847 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1848 | int n = 0; /* position in display_buf */ |
1849 | ||
1850 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1851 | internal_error (__FILE__, __LINE__, |
1852 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1853 | |
1854 | if (use_threadextra_query) | |
1855 | { | |
39f77062 | 1856 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1857 | putpkt (bufp); |
d01949b6 | 1858 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1859 | if (bufp[0] != 0) |
1860 | { | |
30559e10 MS |
1861 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1862 | result = hex2bin (bufp, display_buf, n); | |
1863 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1864 | return display_buf; |
1865 | } | |
0f71a2f6 | 1866 | } |
9d1f7ab2 MS |
1867 | |
1868 | /* If the above query fails, fall back to the old method. */ | |
1869 | use_threadextra_query = 0; | |
1870 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1871 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1872 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1873 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1874 | if (threadinfo.active) | |
0f71a2f6 | 1875 | { |
9d1f7ab2 MS |
1876 | if (*threadinfo.shortname) |
1877 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1878 | if (*threadinfo.display) | |
1879 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1880 | if (*threadinfo.more_display) | |
1881 | n += sprintf(&display_buf[n], " Priority: %s", | |
1882 | threadinfo.more_display); | |
1883 | ||
1884 | if (n > 0) | |
c5aa993b | 1885 | { |
23860348 | 1886 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1887 | if (',' == display_buf[n-1]) |
1888 | display_buf[n-1] = ' '; | |
1889 | return display_buf; | |
c5aa993b | 1890 | } |
0f71a2f6 | 1891 | } |
9d1f7ab2 | 1892 | return NULL; |
0f71a2f6 | 1893 | } |
9d1f7ab2 | 1894 | |
c906108c | 1895 | \f |
c5aa993b | 1896 | |
c906108c SS |
1897 | /* Restart the remote side; this is an extended protocol operation. */ |
1898 | ||
1899 | static void | |
fba45db2 | 1900 | extended_remote_restart (void) |
c906108c | 1901 | { |
d01949b6 AC |
1902 | struct remote_state *rs = get_remote_state (); |
1903 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1904 | |
1905 | /* Send the restart command; for reasons I don't understand the | |
1906 | remote side really expects a number after the "R". */ | |
1907 | buf[0] = 'R'; | |
1908 | sprintf (&buf[1], "%x", 0); | |
1909 | putpkt (buf); | |
1910 | ||
1911 | /* Now query for status so this looks just like we restarted | |
1912 | gdbserver from scratch. */ | |
1913 | putpkt ("?"); | |
d01949b6 | 1914 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1915 | } |
1916 | \f | |
1917 | /* Clean up connection to a remote debugger. */ | |
1918 | ||
c906108c | 1919 | static void |
fba45db2 | 1920 | remote_close (int quitting) |
c906108c SS |
1921 | { |
1922 | if (remote_desc) | |
2cd58942 | 1923 | serial_close (remote_desc); |
c906108c SS |
1924 | remote_desc = NULL; |
1925 | } | |
1926 | ||
23860348 | 1927 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1928 | |
1929 | static void | |
fba45db2 | 1930 | get_offsets (void) |
c906108c | 1931 | { |
d01949b6 AC |
1932 | struct remote_state *rs = get_remote_state (); |
1933 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1934 | char *ptr; |
c906108c SS |
1935 | int lose; |
1936 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1937 | struct section_offsets *offs; | |
1938 | ||
1939 | putpkt ("qOffsets"); | |
1940 | ||
d01949b6 | 1941 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1942 | |
1943 | if (buf[0] == '\000') | |
1944 | return; /* Return silently. Stub doesn't support | |
23860348 | 1945 | this command. */ |
c906108c SS |
1946 | if (buf[0] == 'E') |
1947 | { | |
1948 | warning ("Remote failure reply: %s", buf); | |
1949 | return; | |
1950 | } | |
1951 | ||
1952 | /* Pick up each field in turn. This used to be done with scanf, but | |
1953 | scanf will make trouble if CORE_ADDR size doesn't match | |
1954 | conversion directives correctly. The following code will work | |
1955 | with any size of CORE_ADDR. */ | |
1956 | text_addr = data_addr = bss_addr = 0; | |
1957 | ptr = buf; | |
1958 | lose = 0; | |
1959 | ||
1960 | if (strncmp (ptr, "Text=", 5) == 0) | |
1961 | { | |
1962 | ptr += 5; | |
1963 | /* Don't use strtol, could lose on big values. */ | |
1964 | while (*ptr && *ptr != ';') | |
1965 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1966 | } | |
1967 | else | |
1968 | lose = 1; | |
1969 | ||
1970 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1971 | { | |
1972 | ptr += 6; | |
1973 | while (*ptr && *ptr != ';') | |
1974 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1975 | } | |
1976 | else | |
1977 | lose = 1; | |
1978 | ||
1979 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1980 | { | |
1981 | ptr += 5; | |
1982 | while (*ptr && *ptr != ';') | |
1983 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1984 | } | |
1985 | else | |
1986 | lose = 1; | |
1987 | ||
1988 | if (lose) | |
1989 | error ("Malformed response to offset query, %s", buf); | |
1990 | ||
1991 | if (symfile_objfile == NULL) | |
1992 | return; | |
1993 | ||
802188a7 | 1994 | offs = ((struct section_offsets *) |
a39a16c4 | 1995 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1996 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1997 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1998 | |
a4c8257b | 1999 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
2000 | |
2001 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2002 | because that's what nlmconv does now. The real solution requires changes | |
2003 | to the stub and remote.c that I don't have time to do right now. */ | |
2004 | ||
a4c8257b EZ |
2005 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
2006 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
2007 | |
2008 | objfile_relocate (symfile_objfile, offs); | |
2009 | } | |
2010 | ||
2011 | /* Stub for catch_errors. */ | |
2012 | ||
0f71a2f6 | 2013 | static int |
36918e70 | 2014 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 2015 | { |
23860348 | 2016 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
2017 | /* NOTE: Return something >=0. A -ve value is reserved for |
2018 | catch_exceptions. */ | |
0f71a2f6 JM |
2019 | return 1; |
2020 | } | |
2021 | ||
c906108c | 2022 | static int |
36918e70 | 2023 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 2024 | { |
23860348 | 2025 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2026 | |
2027 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2028 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2029 | |
2030 | /* Let the stub know that we want it to return the thread. */ | |
2031 | set_thread (-1, 0); | |
2032 | ||
39f77062 | 2033 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2034 | |
23860348 | 2035 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2036 | |
23860348 | 2037 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2038 | immediate_quit--; |
c906108c | 2039 | |
36918e70 AC |
2040 | /* NOTE: See comment above in remote_start_remote_dummy(). This |
2041 | function returns something >=0. */ | |
2042 | return remote_start_remote_dummy (uiout, dummy); | |
c906108c SS |
2043 | } |
2044 | ||
2045 | /* Open a connection to a remote debugger. | |
2046 | NAME is the filename used for communication. */ | |
2047 | ||
2048 | static void | |
fba45db2 | 2049 | remote_open (char *name, int from_tty) |
c906108c | 2050 | { |
92d1e331 | 2051 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2052 | } |
2053 | ||
23860348 | 2054 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2055 | static void |
fba45db2 | 2056 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2057 | { |
92d1e331 | 2058 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2059 | } |
2060 | ||
c906108c SS |
2061 | /* Open a connection to a remote debugger using the extended |
2062 | remote gdb protocol. NAME is the filename used for communication. */ | |
2063 | ||
2064 | static void | |
fba45db2 | 2065 | extended_remote_open (char *name, int from_tty) |
c906108c | 2066 | { |
92d1e331 DJ |
2067 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2068 | 0 /* async_p */); | |
c906108c SS |
2069 | } |
2070 | ||
23860348 | 2071 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2072 | static void |
fba45db2 | 2073 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2074 | { |
92d1e331 DJ |
2075 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2076 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2077 | } |
2078 | ||
c906108c SS |
2079 | /* Generic code for opening a connection to a remote target. */ |
2080 | ||
d471ea57 AC |
2081 | static void |
2082 | init_all_packet_configs (void) | |
2083 | { | |
2084 | int i; | |
2085 | update_packet_config (&remote_protocol_P); | |
b96ec7ac | 2086 | update_packet_config (&remote_protocol_p); |
dc8acb97 | 2087 | update_packet_config (&remote_protocol_qSymbol); |
506fb367 | 2088 | update_packet_config (&remote_protocol_vcont); |
d471ea57 AC |
2089 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2090 | update_packet_config (&remote_protocol_Z[i]); | |
2091 | /* Force remote_write_bytes to check whether target supports binary | |
23860348 | 2092 | downloading. */ |
d471ea57 | 2093 | update_packet_config (&remote_protocol_binary_download); |
802188a7 | 2094 | update_packet_config (&remote_protocol_qPart_auxv); |
d471ea57 AC |
2095 | } |
2096 | ||
23860348 | 2097 | /* Symbol look-up. */ |
dc8acb97 MS |
2098 | |
2099 | static void | |
2100 | remote_check_symbols (struct objfile *objfile) | |
2101 | { | |
d01949b6 | 2102 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2103 | char *msg, *reply, *tmp; |
2104 | struct minimal_symbol *sym; | |
2105 | int end; | |
2106 | ||
2107 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2108 | return; | |
2109 | ||
d01949b6 AC |
2110 | msg = alloca (rs->remote_packet_size); |
2111 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 | 2112 | |
23860348 | 2113 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2114 | |
2115 | putpkt ("qSymbol::"); | |
d01949b6 | 2116 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2117 | packet_ok (reply, &remote_protocol_qSymbol); |
2118 | ||
2119 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2120 | { | |
2121 | tmp = &reply[8]; | |
2122 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2123 | msg[end] = '\0'; | |
2124 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2125 | if (sym == NULL) | |
2126 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2127 | else | |
802188a7 | 2128 | sprintf (msg, "qSymbol:%s:%s", |
dc8acb97 MS |
2129 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2130 | &reply[8]); | |
2131 | putpkt (msg); | |
d01949b6 | 2132 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2133 | } |
2134 | } | |
2135 | ||
9db8d71f DJ |
2136 | static struct serial * |
2137 | remote_serial_open (char *name) | |
2138 | { | |
2139 | static int udp_warning = 0; | |
2140 | ||
2141 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2142 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2143 | serial connection is reliable and not the serial connection promising | |
2144 | to be. */ | |
2145 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2146 | { | |
2147 | warning ("The remote protocol may be unreliable over UDP."); | |
2148 | warning ("Some events may be lost, rendering further debugging " | |
2149 | "impossible."); | |
2150 | udp_warning = 1; | |
2151 | } | |
2152 | ||
2153 | return serial_open (name); | |
2154 | } | |
2155 | ||
c906108c | 2156 | static void |
fba45db2 | 2157 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2158 | int extended_p, int async_p) |
c906108c | 2159 | { |
36918e70 | 2160 | int ex; |
d01949b6 | 2161 | struct remote_state *rs = get_remote_state (); |
c906108c | 2162 | if (name == 0) |
22e04375 AC |
2163 | error ("To open a remote debug connection, you need to specify what\n" |
2164 | "serial device is attached to the remote system\n" | |
2165 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2166 | |
23860348 | 2167 | /* See FIXME above. */ |
92d1e331 DJ |
2168 | if (!async_p) |
2169 | wait_forever_enabled_p = 1; | |
6426a772 | 2170 | |
00cac895 DJ |
2171 | reopen_exec_file (); |
2172 | reread_symbols (); | |
2173 | ||
c906108c SS |
2174 | target_preopen (from_tty); |
2175 | ||
2176 | unpush_target (target); | |
2177 | ||
9db8d71f | 2178 | remote_desc = remote_serial_open (name); |
c906108c SS |
2179 | if (!remote_desc) |
2180 | perror_with_name (name); | |
2181 | ||
2182 | if (baud_rate != -1) | |
2183 | { | |
2cd58942 | 2184 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2185 | { |
9b74d5d3 KB |
2186 | /* The requested speed could not be set. Error out to |
2187 | top level after closing remote_desc. Take care to | |
2188 | set remote_desc to NULL to avoid closing remote_desc | |
2189 | more than once. */ | |
2cd58942 | 2190 | serial_close (remote_desc); |
9b74d5d3 | 2191 | remote_desc = NULL; |
c906108c SS |
2192 | perror_with_name (name); |
2193 | } | |
2194 | } | |
2195 | ||
2cd58942 | 2196 | serial_raw (remote_desc); |
c906108c SS |
2197 | |
2198 | /* If there is something sitting in the buffer we might take it as a | |
2199 | response to a command, which would be bad. */ | |
2cd58942 | 2200 | serial_flush_input (remote_desc); |
c906108c SS |
2201 | |
2202 | if (from_tty) | |
2203 | { | |
2204 | puts_filtered ("Remote debugging using "); | |
2205 | puts_filtered (name); | |
2206 | puts_filtered ("\n"); | |
2207 | } | |
23860348 | 2208 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2209 | |
d471ea57 | 2210 | init_all_packet_configs (); |
802188a7 | 2211 | |
c5aa993b | 2212 | general_thread = -2; |
cce74817 | 2213 | continue_thread = -2; |
c906108c | 2214 | |
9d1f7ab2 MS |
2215 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2216 | use_threadinfo_query = 1; | |
2217 | use_threadextra_query = 1; | |
2218 | ||
c906108c SS |
2219 | /* Without this, some commands which require an active target (such |
2220 | as kill) won't work. This variable serves (at least) double duty | |
2221 | as both the pid of the target process (if it has such), and as a | |
2222 | flag indicating that a target is active. These functions should | |
2223 | be split out into seperate variables, especially since GDB will | |
2224 | someday have a notion of debugging several processes. */ | |
2225 | ||
39f77062 | 2226 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2227 | |
2228 | if (async_p) | |
2229 | { | |
23860348 | 2230 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2231 | remote_async_terminal_ours_p = 1; |
2232 | ||
2233 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2234 | assumed that the target is already ready and able to respond to | |
2235 | requests. Unfortunately remote_start_remote() eventually calls | |
2236 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2237 | around this. Eventually a mechanism that allows | |
2238 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2239 | implemented. */ |
92d1e331 DJ |
2240 | wait_forever_enabled_p = 0; |
2241 | } | |
2242 | ||
f78f6cf1 | 2243 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
23860348 | 2244 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 MS |
2245 | no_shared_libraries (NULL, 0); |
2246 | #endif | |
2247 | ||
36918e70 | 2248 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2249 | target (we'd otherwise be in an inconsistent state) and then |
2250 | propogate the error on up the exception chain. This ensures that | |
2251 | the caller doesn't stumble along blindly assuming that the | |
2252 | function succeeded. The CLI doesn't have this problem but other | |
2253 | UI's, such as MI do. | |
36918e70 AC |
2254 | |
2255 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2256 | this function should return an error indication letting the | |
ce2826aa | 2257 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2258 | ``target remote'' is directly wired to this function making that |
2259 | impossible. On a positive note, the CLI side of this problem has | |
2260 | been fixed - the function set_cmd_context() makes it possible for | |
2261 | all the ``target ....'' commands to share a common callback | |
2262 | function. See cli-dump.c. */ | |
2263 | ex = catch_exceptions (uiout, | |
2264 | remote_start_remote, NULL, | |
2265 | "Couldn't establish connection to remote" | |
2266 | " target\n", | |
2267 | RETURN_MASK_ALL); | |
2268 | if (ex < 0) | |
c906108c SS |
2269 | { |
2270 | pop_target (); | |
92d1e331 DJ |
2271 | if (async_p) |
2272 | wait_forever_enabled_p = 1; | |
2a78bfb5 | 2273 | throw_reason (ex); |
c906108c SS |
2274 | } |
2275 | ||
92d1e331 DJ |
2276 | if (async_p) |
2277 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2278 | |
2279 | if (extended_p) | |
43ff13b4 | 2280 | { |
6240bebf | 2281 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2282 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2283 | putpkt ("!"); |
d01949b6 | 2284 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2285 | } |
f78f6cf1 | 2286 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
802188a7 RM |
2287 | /* FIXME: need a master target_open vector from which all |
2288 | remote_opens can be called, so that stuff like this can | |
6240bebf | 2289 | go there. Failing that, the following code must be copied |
802188a7 | 2290 | to the open function for any remote target that wants to |
6240bebf | 2291 | support svr4 shared libraries. */ |
f78f6cf1 | 2292 | |
23860348 MS |
2293 | /* Set up to detect and load shared libraries. */ |
2294 | if (exec_bfd) /* No use without an exec file. */ | |
dc8acb97 MS |
2295 | { |
2296 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2297 | remote_check_symbols (symfile_objfile); | |
2298 | } | |
6240bebf | 2299 | #endif |
43ff13b4 JM |
2300 | } |
2301 | ||
c906108c SS |
2302 | /* This takes a program previously attached to and detaches it. After |
2303 | this is done, GDB can be used to debug some other program. We | |
2304 | better not have left any breakpoints in the target program or it'll | |
2305 | die when it hits one. */ | |
2306 | ||
2307 | static void | |
fba45db2 | 2308 | remote_detach (char *args, int from_tty) |
c906108c | 2309 | { |
d01949b6 AC |
2310 | struct remote_state *rs = get_remote_state (); |
2311 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2312 | |
2313 | if (args) | |
2314 | error ("Argument given to \"detach\" when remotely debugging."); | |
2315 | ||
2316 | /* Tell the remote target to detach. */ | |
2317 | strcpy (buf, "D"); | |
d01949b6 | 2318 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2319 | |
23860348 | 2320 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2321 | if (target_is_async_p ()) |
2322 | serial_async (remote_desc, NULL, 0); | |
2323 | ||
cca728d0 | 2324 | target_mourn_inferior (); |
c906108c SS |
2325 | if (from_tty) |
2326 | puts_filtered ("Ending remote debugging.\n"); | |
2327 | } | |
2328 | ||
6ad8ae5c DJ |
2329 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2330 | ||
43ff13b4 | 2331 | static void |
6ad8ae5c | 2332 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2333 | { |
d01949b6 AC |
2334 | struct remote_state *rs = get_remote_state (); |
2335 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2336 | |
2337 | if (args) | |
2338 | error ("Argument given to \"detach\" when remotely debugging."); | |
2339 | ||
23860348 | 2340 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2341 | if (target_is_async_p ()) |
2cd58942 | 2342 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2343 | |
cca728d0 | 2344 | target_mourn_inferior (); |
43ff13b4 JM |
2345 | if (from_tty) |
2346 | puts_filtered ("Ending remote debugging.\n"); | |
2347 | } | |
2348 | ||
c906108c SS |
2349 | /* Convert hex digit A to a number. */ |
2350 | ||
30559e10 | 2351 | static int |
fba45db2 | 2352 | fromhex (int a) |
c906108c SS |
2353 | { |
2354 | if (a >= '0' && a <= '9') | |
2355 | return a - '0'; | |
2356 | else if (a >= 'a' && a <= 'f') | |
2357 | return a - 'a' + 10; | |
2358 | else if (a >= 'A' && a <= 'F') | |
2359 | return a - 'A' + 10; | |
c5aa993b | 2360 | else |
c906108c SS |
2361 | error ("Reply contains invalid hex digit %d", a); |
2362 | } | |
2363 | ||
30559e10 MS |
2364 | static int |
2365 | hex2bin (const char *hex, char *bin, int count) | |
2366 | { | |
2367 | int i; | |
2368 | ||
30559e10 MS |
2369 | for (i = 0; i < count; i++) |
2370 | { | |
2371 | if (hex[0] == 0 || hex[1] == 0) | |
2372 | { | |
2373 | /* Hex string is short, or of uneven length. | |
23860348 | 2374 | Return the count that has been converted so far. */ |
30559e10 MS |
2375 | return i; |
2376 | } | |
2377 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2378 | hex += 2; | |
2379 | } | |
2380 | return i; | |
2381 | } | |
2382 | ||
c906108c SS |
2383 | /* Convert number NIB to a hex digit. */ |
2384 | ||
2385 | static int | |
fba45db2 | 2386 | tohex (int nib) |
c906108c SS |
2387 | { |
2388 | if (nib < 10) | |
c5aa993b | 2389 | return '0' + nib; |
c906108c | 2390 | else |
c5aa993b | 2391 | return 'a' + nib - 10; |
c906108c | 2392 | } |
30559e10 MS |
2393 | |
2394 | static int | |
234fa6d1 | 2395 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2396 | { |
2397 | int i; | |
23860348 | 2398 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 MS |
2399 | if (count == 0) |
2400 | count = strlen (bin); | |
2401 | ||
2402 | for (i = 0; i < count; i++) | |
2403 | { | |
2404 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2405 | *hex++ = tohex (*bin++ & 0xf); | |
2406 | } | |
2407 | *hex = 0; | |
2408 | return i; | |
2409 | } | |
c906108c | 2410 | \f |
506fb367 DJ |
2411 | /* Check for the availability of vCont. This function should also check |
2412 | the response. */ | |
c906108c SS |
2413 | |
2414 | static void | |
506fb367 | 2415 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2416 | { |
506fb367 DJ |
2417 | strcpy (buf, "vCont?"); |
2418 | putpkt (buf); | |
2419 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2420 | |
506fb367 DJ |
2421 | /* Make sure that the features we assume are supported. */ |
2422 | if (strncmp (buf, "vCont", 5) == 0) | |
2423 | { | |
2424 | char *p = &buf[5]; | |
2425 | int support_s, support_S, support_c, support_C; | |
2426 | ||
2427 | support_s = 0; | |
2428 | support_S = 0; | |
2429 | support_c = 0; | |
2430 | support_C = 0; | |
2431 | while (p && *p == ';') | |
2432 | { | |
2433 | p++; | |
2434 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2435 | support_s = 1; | |
2436 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2437 | support_S = 1; | |
2438 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2439 | support_c = 1; | |
2440 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2441 | support_C = 1; | |
2442 | ||
2443 | p = strchr (p, ';'); | |
2444 | } | |
c906108c | 2445 | |
506fb367 DJ |
2446 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2447 | BUF will make packet_ok disable the packet. */ | |
2448 | if (!support_s || !support_S || !support_c || !support_C) | |
2449 | buf[0] = 0; | |
2450 | } | |
c906108c | 2451 | |
506fb367 DJ |
2452 | packet_ok (buf, &remote_protocol_vcont); |
2453 | } | |
c906108c | 2454 | |
506fb367 DJ |
2455 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2456 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2457 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2458 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2459 | signalled is given in the global INFERIOR_PTID. This function returns | |
2460 | non-zero iff it resumes the inferior. | |
44eaed12 | 2461 | |
506fb367 DJ |
2462 | This function issues a strict subset of all possible vCont commands at the |
2463 | moment. */ | |
44eaed12 | 2464 | |
506fb367 DJ |
2465 | static int |
2466 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2467 | { | |
2468 | struct remote_state *rs = get_remote_state (); | |
2469 | int pid = PIDGET (ptid); | |
2963ee1d | 2470 | char *buf = NULL, *outbuf; |
506fb367 | 2471 | struct cleanup *old_cleanup; |
44eaed12 | 2472 | |
506fb367 DJ |
2473 | buf = xmalloc (rs->remote_packet_size); |
2474 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2475 | |
506fb367 DJ |
2476 | if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN) |
2477 | remote_vcont_probe (rs, buf); | |
44eaed12 | 2478 | |
506fb367 DJ |
2479 | if (remote_protocol_vcont.support == PACKET_DISABLE) |
2480 | { | |
2481 | do_cleanups (old_cleanup); | |
2482 | return 0; | |
44eaed12 C |
2483 | } |
2484 | ||
506fb367 DJ |
2485 | /* If we could generate a wider range of packets, we'd have to worry |
2486 | about overflowing BUF. Should there be a generic | |
2487 | "multi-part-packet" packet? */ | |
2488 | ||
2489 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2490 | { |
506fb367 DJ |
2491 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2492 | don't have any PID numbers the inferior will understand. Make sure | |
2493 | to only send forms that do not specify a PID. */ | |
2494 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2495 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2496 | else if (step) |
2963ee1d | 2497 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2498 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2499 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2500 | else |
2963ee1d | 2501 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2502 | } |
2503 | else if (pid == -1) | |
2504 | { | |
2505 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2506 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2507 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2508 | PIDGET (inferior_ptid)); | |
506fb367 | 2509 | else if (step) |
2963ee1d | 2510 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2511 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2512 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2513 | PIDGET (inferior_ptid)); | |
506fb367 | 2514 | else |
2963ee1d | 2515 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2516 | } |
2517 | else | |
506fb367 DJ |
2518 | { |
2519 | /* Scheduler locking; resume only PTID. */ | |
2520 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2521 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2522 | else if (step) |
2963ee1d | 2523 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2524 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2525 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2526 | else |
2963ee1d | 2527 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2528 | } |
c906108c | 2529 | |
2963ee1d DJ |
2530 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
2531 | make_cleanup (xfree, outbuf); | |
2532 | ||
2533 | putpkt (outbuf); | |
506fb367 DJ |
2534 | |
2535 | do_cleanups (old_cleanup); | |
2536 | ||
2537 | return 1; | |
c906108c | 2538 | } |
43ff13b4 | 2539 | |
506fb367 DJ |
2540 | /* Tell the remote machine to resume. */ |
2541 | ||
2542 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2543 | ||
2544 | static int last_sent_step; | |
2545 | ||
43ff13b4 | 2546 | static void |
506fb367 | 2547 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2548 | { |
d01949b6 AC |
2549 | struct remote_state *rs = get_remote_state (); |
2550 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2551 | int pid = PIDGET (ptid); |
44eaed12 | 2552 | char *p; |
43ff13b4 | 2553 | |
43ff13b4 JM |
2554 | last_sent_signal = siggnal; |
2555 | last_sent_step = step; | |
2556 | ||
2557 | /* A hook for when we need to do something at the last moment before | |
2558 | resumption. */ | |
9a4105ab AC |
2559 | if (deprecated_target_resume_hook) |
2560 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2561 | |
506fb367 DJ |
2562 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2563 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2564 | return; | |
2565 | ||
2566 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2567 | if (pid == -1) | |
23860348 | 2568 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2569 | else |
23860348 | 2570 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2571 | |
43ff13b4 JM |
2572 | if (siggnal != TARGET_SIGNAL_0) |
2573 | { | |
2574 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2575 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2576 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2577 | buf[3] = '\0'; |
2578 | } | |
2579 | else | |
c5aa993b | 2580 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2581 | |
44eaed12 | 2582 | putpkt (buf); |
506fb367 DJ |
2583 | } |
2584 | ||
23860348 | 2585 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2586 | static void |
2587 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2588 | { | |
2589 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2590 | |
2acceee2 JM |
2591 | /* We are about to start executing the inferior, let's register it |
2592 | with the event loop. NOTE: this is the one place where all the | |
2593 | execution commands end up. We could alternatively do this in each | |
23860348 | 2594 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2595 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2596 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2597 | NOT asynchronously. */ |
362646f5 | 2598 | if (target_can_async_p ()) |
2acceee2 | 2599 | target_async (inferior_event_handler, 0); |
23860348 | 2600 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2601 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2602 | this? Instead, should the client of target just assume (for | |
2603 | async targets) that the target is going to start executing? Is | |
2604 | this information already found in the continuation block? */ | |
ed9a39eb | 2605 | if (target_is_async_p ()) |
2acceee2 | 2606 | target_executing = 1; |
43ff13b4 | 2607 | } |
c906108c | 2608 | \f |
43ff13b4 JM |
2609 | |
2610 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2611 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2612 | static void |
fba45db2 | 2613 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2614 | { |
c5aa993b | 2615 | sigint_remote_token = |
43ff13b4 JM |
2616 | create_async_signal_handler (async_remote_interrupt, NULL); |
2617 | signal (SIGINT, handle_remote_sigint); | |
2618 | } | |
2619 | ||
23860348 | 2620 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2621 | static void |
fba45db2 | 2622 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2623 | { |
2624 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2625 | sigint_remote_twice_token = |
43ff13b4 JM |
2626 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2627 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2628 | } | |
2629 | ||
2630 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2631 | sent once. It will take effect the second time that the user sends | |
23860348 | 2632 | a ^C. */ |
43ff13b4 | 2633 | static void |
fba45db2 | 2634 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2635 | { |
2636 | signal (sig, handle_sigint); | |
c5aa993b | 2637 | sigint_remote_twice_token = |
2df3850c | 2638 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2639 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2640 | } | |
2641 | ||
6426a772 | 2642 | /* Perform the real interruption of the target execution, in response |
23860348 | 2643 | to a ^C. */ |
c5aa993b | 2644 | static void |
fba45db2 | 2645 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2646 | { |
2647 | if (remote_debug) | |
2648 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2649 | ||
2650 | target_stop (); | |
2651 | } | |
2652 | ||
2653 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2654 | up on the target alltogether. */ |
2df3850c | 2655 | void |
fba45db2 | 2656 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2657 | { |
2df3850c JM |
2658 | if (remote_debug) |
2659 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2660 | /* Do something only if the target was not killed by the previous |
23860348 | 2661 | cntl-C. */ |
6426a772 JM |
2662 | if (target_executing) |
2663 | { | |
2664 | interrupt_query (); | |
2665 | signal (SIGINT, handle_remote_sigint); | |
2666 | } | |
43ff13b4 JM |
2667 | } |
2668 | ||
2669 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2670 | stopped. */ |
6426a772 JM |
2671 | static void |
2672 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2673 | { |
2674 | signal (SIGINT, handle_sigint); | |
2675 | if (sigint_remote_twice_token) | |
23860348 MS |
2676 | delete_async_signal_handler ((struct async_signal_handler **) |
2677 | &sigint_remote_twice_token); | |
43ff13b4 | 2678 | if (sigint_remote_token) |
23860348 MS |
2679 | delete_async_signal_handler ((struct async_signal_handler **) |
2680 | &sigint_remote_token); | |
43ff13b4 JM |
2681 | } |
2682 | ||
c906108c SS |
2683 | /* Send ^C to target to halt it. Target will respond, and send us a |
2684 | packet. */ | |
507f3c78 | 2685 | static void (*ofunc) (int); |
c906108c | 2686 | |
7a292a7a SS |
2687 | /* The command line interface's stop routine. This function is installed |
2688 | as a signal handler for SIGINT. The first time a user requests a | |
2689 | stop, we call remote_stop to send a break or ^C. If there is no | |
2690 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2691 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2692 | static void |
fba45db2 | 2693 | remote_interrupt (int signo) |
c906108c | 2694 | { |
23860348 | 2695 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2696 | signal (signo, remote_interrupt_twice); |
2697 | ||
2698 | if (remote_debug) | |
0f71a2f6 | 2699 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2700 | |
2701 | target_stop (); | |
2702 | } | |
2703 | ||
2704 | /* The user typed ^C twice. */ | |
2705 | ||
2706 | static void | |
fba45db2 | 2707 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2708 | { |
2709 | signal (signo, ofunc); | |
2710 | interrupt_query (); | |
c906108c SS |
2711 | signal (signo, remote_interrupt); |
2712 | } | |
7a292a7a SS |
2713 | |
2714 | /* This is the generic stop called via the target vector. When a target | |
2715 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2716 | will eventually end up here. */ |
c906108c | 2717 | static void |
fba45db2 | 2718 | remote_stop (void) |
c906108c | 2719 | { |
7a292a7a SS |
2720 | /* Send a break or a ^C, depending on user preference. */ |
2721 | if (remote_debug) | |
0f71a2f6 | 2722 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2723 | |
7a292a7a | 2724 | if (remote_break) |
2cd58942 | 2725 | serial_send_break (remote_desc); |
c906108c | 2726 | else |
2cd58942 | 2727 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2728 | } |
2729 | ||
2730 | /* Ask the user what to do when an interrupt is received. */ | |
2731 | ||
2732 | static void | |
fba45db2 | 2733 | interrupt_query (void) |
c906108c SS |
2734 | { |
2735 | target_terminal_ours (); | |
2736 | ||
2737 | if (query ("Interrupted while waiting for the program.\n\ | |
2738 | Give up (and stop debugging it)? ")) | |
2739 | { | |
2740 | target_mourn_inferior (); | |
2a78bfb5 | 2741 | throw_reason (RETURN_QUIT); |
c906108c SS |
2742 | } |
2743 | ||
2744 | target_terminal_inferior (); | |
2745 | } | |
2746 | ||
6426a772 JM |
2747 | /* Enable/disable target terminal ownership. Most targets can use |
2748 | terminal groups to control terminal ownership. Remote targets are | |
2749 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2750 | is required. */ |
6426a772 JM |
2751 | |
2752 | static void | |
2753 | remote_async_terminal_inferior (void) | |
2754 | { | |
2755 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2756 | sync_execution here. This function should only be called when | |
2757 | GDB is resuming the inferior in the forground. A background | |
2758 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2759 | consequently should not call this code. */ |
6426a772 JM |
2760 | if (!sync_execution) |
2761 | return; | |
2762 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2763 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2764 | to an asynchronous target with a synchronous command calls this | |
2765 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2766 | stops trying to transfer the terminal to the target when it | |
2767 | shouldn't this guard can go away. */ | |
2768 | if (!remote_async_terminal_ours_p) | |
2769 | return; | |
2770 | delete_file_handler (input_fd); | |
2771 | remote_async_terminal_ours_p = 0; | |
2772 | initialize_sigint_signal_handler (); | |
2773 | /* NOTE: At this point we could also register our selves as the | |
2774 | recipient of all input. Any characters typed could then be | |
23860348 | 2775 | passed on down to the target. */ |
6426a772 JM |
2776 | } |
2777 | ||
2778 | static void | |
2779 | remote_async_terminal_ours (void) | |
2780 | { | |
23860348 | 2781 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2782 | if (!sync_execution) |
2783 | return; | |
23860348 | 2784 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2785 | if (remote_async_terminal_ours_p) |
2786 | return; | |
2787 | cleanup_sigint_signal_handler (NULL); | |
2788 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2789 | remote_async_terminal_ours_p = 1; | |
2790 | } | |
2791 | ||
c906108c SS |
2792 | /* If nonzero, ignore the next kill. */ |
2793 | ||
2794 | int kill_kludge; | |
2795 | ||
2796 | void | |
917317f4 | 2797 | remote_console_output (char *msg) |
c906108c SS |
2798 | { |
2799 | char *p; | |
2800 | ||
c5aa993b | 2801 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2802 | { |
2803 | char tb[2]; | |
2804 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2805 | tb[0] = c; | |
2806 | tb[1] = 0; | |
43ff13b4 | 2807 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2808 | } |
917317f4 | 2809 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2810 | } |
2811 | ||
0f71a2f6 JM |
2812 | /* Wait until the remote machine stops, then return, |
2813 | storing status in STATUS just as `wait' would. | |
802188a7 | 2814 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2815 | remote OS, is the thread-id. */ |
c906108c | 2816 | |
39f77062 KB |
2817 | static ptid_t |
2818 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2819 | { |
d01949b6 AC |
2820 | struct remote_state *rs = get_remote_state (); |
2821 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2822 | ULONGEST thread_num = -1; |
3c3bea1c | 2823 | ULONGEST addr; |
c906108c SS |
2824 | |
2825 | status->kind = TARGET_WAITKIND_EXITED; | |
2826 | status->value.integer = 0; | |
2827 | ||
2828 | while (1) | |
2829 | { | |
2830 | unsigned char *p; | |
2831 | ||
c906108c | 2832 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2833 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2834 | signal (SIGINT, ofunc); |
2835 | ||
2836 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2837 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2838 | if (deprecated_target_wait_loop_hook) |
2839 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2840 | |
3c3bea1c GS |
2841 | remote_stopped_by_watchpoint_p = 0; |
2842 | ||
c906108c SS |
2843 | switch (buf[0]) |
2844 | { | |
23860348 | 2845 | case 'E': /* Error of some sort. */ |
c906108c SS |
2846 | warning ("Remote failure reply: %s", buf); |
2847 | continue; | |
23860348 | 2848 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2849 | remote_fileio_request (buf); |
2850 | continue; | |
23860348 | 2851 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c SS |
2852 | { |
2853 | int i; | |
d9d9c31f | 2854 | char regs[MAX_REGISTER_SIZE]; |
c906108c | 2855 | |
23860348 | 2856 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 2857 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2858 | ss = signal number |
2859 | n... = register number | |
2860 | r... = register contents | |
2861 | */ | |
c906108c SS |
2862 | p = &buf[3]; /* after Txx */ |
2863 | ||
2864 | while (*p) | |
2865 | { | |
2866 | unsigned char *p1; | |
2867 | char *p_temp; | |
97345198 | 2868 | int fieldsize; |
3c3bea1c GS |
2869 | LONGEST pnum = 0; |
2870 | ||
23860348 MS |
2871 | /* If the packet contains a register number save it in |
2872 | pnum and set p1 to point to the character following | |
2873 | it. Otherwise p1 points to p. */ | |
c906108c | 2874 | |
23860348 MS |
2875 | /* If this packet is an awatch packet, don't parse the |
2876 | 'a' as a register number. */ | |
3c3bea1c GS |
2877 | |
2878 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2879 | { | |
2880 | /* Read the ``P'' register number. */ | |
2881 | pnum = strtol (p, &p_temp, 16); | |
2882 | p1 = (unsigned char *) p_temp; | |
2883 | } | |
802188a7 | 2884 | else |
3c3bea1c | 2885 | p1 = p; |
c906108c | 2886 | |
23860348 | 2887 | if (p1 == p) /* No register number present here. */ |
c906108c | 2888 | { |
3c3bea1c | 2889 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c SS |
2890 | if (p1 == NULL) |
2891 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2892 | Packet: '%s'\n", | |
2893 | p, buf); | |
3c3bea1c | 2894 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2895 | { |
2896 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2897 | record_currthread (thread_num); | |
2898 | p = (unsigned char *) p_temp; | |
2899 | } | |
3c3bea1c GS |
2900 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2901 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2902 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2903 | { | |
2904 | remote_stopped_by_watchpoint_p = 1; | |
2905 | p = unpack_varlen_hex (++p1, &addr); | |
2906 | remote_watch_data_address = (CORE_ADDR)addr; | |
2907 | } | |
2908 | else | |
2909 | { | |
2910 | /* Silently skip unknown optional info. */ | |
2911 | p_temp = strchr (p1 + 1, ';'); | |
2912 | if (p_temp) | |
2913 | p = (unsigned char *) p_temp; | |
2914 | } | |
c906108c SS |
2915 | } |
2916 | else | |
2917 | { | |
ad10f812 | 2918 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2919 | p = p1; |
2920 | ||
2921 | if (*p++ != ':') | |
23860348 MS |
2922 | error ("Malformed packet(b) (missing colon): %s\n\ |
2923 | Packet: '%s'\n", | |
3fcb8548 | 2924 | p, buf); |
c906108c | 2925 | |
ad10f812 | 2926 | if (reg == NULL) |
23860348 MS |
2927 | error ("Remote sent bad register number %s: %s\n\ |
2928 | Packet: '%s'\n", | |
3fcb8548 | 2929 | phex_nz (pnum, 0), p, buf); |
c906108c | 2930 | |
23860348 MS |
2931 | fieldsize = hex2bin (p, regs, |
2932 | register_size (current_gdbarch, | |
2933 | reg->regnum)); | |
97345198 | 2934 | p += 2 * fieldsize; |
23860348 MS |
2935 | if (fieldsize < register_size (current_gdbarch, |
2936 | reg->regnum)) | |
30559e10 | 2937 | warning ("Remote reply is too short: %s", buf); |
23860348 MS |
2938 | regcache_raw_supply (current_regcache, |
2939 | reg->regnum, regs); | |
c906108c SS |
2940 | } |
2941 | ||
2942 | if (*p++ != ';') | |
23860348 MS |
2943 | error ("Remote register badly formatted: %s\nhere: %s", |
2944 | buf, p); | |
c906108c SS |
2945 | } |
2946 | } | |
2947 | /* fall through */ | |
23860348 | 2948 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
2949 | status->kind = TARGET_WAITKIND_STOPPED; |
2950 | status->value.sig = (enum target_signal) | |
2951 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2952 | ||
0f71a2f6 JM |
2953 | if (buf[3] == 'p') |
2954 | { | |
0f71a2f6 JM |
2955 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2956 | record_currthread (thread_num); | |
2957 | } | |
c906108c | 2958 | goto got_status; |
23860348 | 2959 | case 'W': /* Target exited. */ |
c906108c SS |
2960 | { |
2961 | /* The remote process exited. */ | |
2962 | status->kind = TARGET_WAITKIND_EXITED; | |
2963 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2964 | goto got_status; | |
2965 | } | |
2966 | case 'X': | |
2967 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2968 | status->value.sig = (enum target_signal) | |
2969 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2970 | kill_kludge = 1; | |
2971 | ||
2972 | goto got_status; | |
23860348 | 2973 | case 'O': /* Console output. */ |
c906108c SS |
2974 | remote_console_output (buf + 1); |
2975 | continue; | |
2976 | case '\0': | |
2977 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2978 | { | |
2979 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2980 | the remote system doesn't support it. */ |
c906108c SS |
2981 | target_terminal_ours_for_output (); |
2982 | printf_filtered | |
2983 | ("Can't send signals to this remote system. %s not sent.\n", | |
2984 | target_signal_to_name (last_sent_signal)); | |
2985 | last_sent_signal = TARGET_SIGNAL_0; | |
2986 | target_terminal_inferior (); | |
2987 | ||
2988 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2989 | putpkt ((char *) buf); | |
2990 | continue; | |
2991 | } | |
2992 | /* else fallthrough */ | |
2993 | default: | |
2994 | warning ("Invalid remote reply: %s", buf); | |
2995 | continue; | |
2996 | } | |
2997 | } | |
c5aa993b | 2998 | got_status: |
c906108c SS |
2999 | if (thread_num != -1) |
3000 | { | |
39f77062 | 3001 | return pid_to_ptid (thread_num); |
c906108c | 3002 | } |
39f77062 | 3003 | return inferior_ptid; |
c906108c SS |
3004 | } |
3005 | ||
23860348 | 3006 | /* Async version of remote_wait. */ |
39f77062 KB |
3007 | static ptid_t |
3008 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3009 | { |
d01949b6 AC |
3010 | struct remote_state *rs = get_remote_state (); |
3011 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 3012 | ULONGEST thread_num = -1; |
3c3bea1c | 3013 | ULONGEST addr; |
43ff13b4 JM |
3014 | |
3015 | status->kind = TARGET_WAITKIND_EXITED; | |
3016 | status->value.integer = 0; | |
3017 | ||
3c3bea1c GS |
3018 | remote_stopped_by_watchpoint_p = 0; |
3019 | ||
43ff13b4 JM |
3020 | while (1) |
3021 | { | |
3022 | unsigned char *p; | |
c5aa993b | 3023 | |
ed9a39eb | 3024 | if (!target_is_async_p ()) |
43ff13b4 | 3025 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3026 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3027 | _never_ wait for ever -> test on target_is_async_p(). | |
3028 | However, before we do that we need to ensure that the caller | |
23860348 | 3029 | knows how to take the target into/out of async mode. */ |
d01949b6 | 3030 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3031 | if (!target_is_async_p ()) |
43ff13b4 JM |
3032 | signal (SIGINT, ofunc); |
3033 | ||
3034 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3035 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3036 | if (deprecated_target_wait_loop_hook) |
3037 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3038 | |
3039 | switch (buf[0]) | |
3040 | { | |
23860348 | 3041 | case 'E': /* Error of some sort. */ |
43ff13b4 JM |
3042 | warning ("Remote failure reply: %s", buf); |
3043 | continue; | |
23860348 | 3044 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3045 | remote_fileio_request (buf); |
3046 | continue; | |
23860348 | 3047 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 JM |
3048 | { |
3049 | int i; | |
d9d9c31f | 3050 | char regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3051 | |
23860348 | 3052 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3053 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3054 | ss = signal number |
3055 | n... = register number | |
3056 | r... = register contents | |
3057 | */ | |
43ff13b4 JM |
3058 | p = &buf[3]; /* after Txx */ |
3059 | ||
3060 | while (*p) | |
3061 | { | |
3062 | unsigned char *p1; | |
3063 | char *p_temp; | |
6c3f2dbf | 3064 | int fieldsize; |
3c3bea1c | 3065 | long pnum = 0; |
43ff13b4 | 3066 | |
23860348 MS |
3067 | /* If the packet contains a register number, save it |
3068 | in pnum and set p1 to point to the character | |
3069 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3070 | |
3071 | /* If this packet is an awatch packet, don't parse the 'a' | |
3072 | as a register number. */ | |
802188a7 | 3073 | |
3c3bea1c GS |
3074 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3075 | { | |
3076 | /* Read the register number. */ | |
3077 | pnum = strtol (p, &p_temp, 16); | |
3078 | p1 = (unsigned char *) p_temp; | |
3079 | } | |
802188a7 | 3080 | else |
3c3bea1c | 3081 | p1 = p; |
43ff13b4 | 3082 | |
23860348 | 3083 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3084 | { |
3c3bea1c | 3085 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 | 3086 | if (p1 == NULL) |
23860348 MS |
3087 | error ("Malformed packet(a) (missing colon): %s\n\ |
3088 | Packet: '%s'\n", | |
3fcb8548 | 3089 | p, buf); |
3c3bea1c | 3090 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3091 | { |
3092 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3093 | record_currthread (thread_num); | |
3094 | p = (unsigned char *) p_temp; | |
3095 | } | |
3c3bea1c GS |
3096 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3097 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3098 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3099 | { | |
3100 | remote_stopped_by_watchpoint_p = 1; | |
3101 | p = unpack_varlen_hex (++p1, &addr); | |
3102 | remote_watch_data_address = (CORE_ADDR)addr; | |
3103 | } | |
3104 | else | |
3105 | { | |
3106 | /* Silently skip unknown optional info. */ | |
3107 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3108 | if (p_temp) | |
3109 | p = p_temp; | |
3110 | } | |
43ff13b4 | 3111 | } |
802188a7 | 3112 | |
43ff13b4 JM |
3113 | else |
3114 | { | |
ad10f812 | 3115 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3116 | p = p1; |
43ff13b4 | 3117 | if (*p++ != ':') |
23860348 MS |
3118 | error ("Malformed packet(b) (missing colon): %s\n\ |
3119 | Packet: '%s'\n", | |
3fcb8548 | 3120 | p, buf); |
43ff13b4 | 3121 | |
ad10f812 | 3122 | if (reg == NULL) |
23860348 MS |
3123 | error ("Remote sent bad register number %ld: %s\n\ |
3124 | Packet: '%s'\n", | |
3fcb8548 | 3125 | pnum, p, buf); |
43ff13b4 | 3126 | |
23860348 MS |
3127 | fieldsize = hex2bin (p, regs, |
3128 | register_size (current_gdbarch, | |
3129 | reg->regnum)); | |
6c3f2dbf | 3130 | p += 2 * fieldsize; |
23860348 MS |
3131 | if (fieldsize < register_size (current_gdbarch, |
3132 | reg->regnum)) | |
30559e10 | 3133 | warning ("Remote reply is too short: %s", buf); |
23a6d369 | 3134 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3135 | } |
3136 | ||
3137 | if (*p++ != ';') | |
0a2cfde4 AC |
3138 | error ("Remote register badly formatted: %s\nhere: %s", |
3139 | buf, p); | |
43ff13b4 JM |
3140 | } |
3141 | } | |
3142 | /* fall through */ | |
23860348 | 3143 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3144 | status->kind = TARGET_WAITKIND_STOPPED; |
3145 | status->value.sig = (enum target_signal) | |
3146 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3147 | ||
3148 | if (buf[3] == 'p') | |
3149 | { | |
43ff13b4 JM |
3150 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3151 | record_currthread (thread_num); | |
3152 | } | |
43ff13b4 | 3153 | goto got_status; |
23860348 | 3154 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3155 | { |
3156 | /* The remote process exited. */ | |
3157 | status->kind = TARGET_WAITKIND_EXITED; | |
3158 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3159 | goto got_status; | |
3160 | } | |
3161 | case 'X': | |
3162 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3163 | status->value.sig = (enum target_signal) | |
3164 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3165 | kill_kludge = 1; | |
3166 | ||
3167 | goto got_status; | |
23860348 | 3168 | case 'O': /* Console output. */ |
43ff13b4 | 3169 | remote_console_output (buf + 1); |
c4093a6a | 3170 | /* Return immediately to the event loop. The event loop will |
23860348 | 3171 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3172 | status->kind = TARGET_WAITKIND_IGNORE; |
3173 | goto got_status; | |
43ff13b4 JM |
3174 | case '\0': |
3175 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3176 | { | |
3177 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3178 | the remote system doesn't support it. */ |
43ff13b4 JM |
3179 | target_terminal_ours_for_output (); |
3180 | printf_filtered | |
3181 | ("Can't send signals to this remote system. %s not sent.\n", | |
3182 | target_signal_to_name (last_sent_signal)); | |
3183 | last_sent_signal = TARGET_SIGNAL_0; | |
3184 | target_terminal_inferior (); | |
3185 | ||
3186 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3187 | putpkt ((char *) buf); | |
3188 | continue; | |
3189 | } | |
3190 | /* else fallthrough */ | |
3191 | default: | |
3192 | warning ("Invalid remote reply: %s", buf); | |
3193 | continue; | |
3194 | } | |
3195 | } | |
c5aa993b | 3196 | got_status: |
43ff13b4 JM |
3197 | if (thread_num != -1) |
3198 | { | |
39f77062 | 3199 | return pid_to_ptid (thread_num); |
43ff13b4 | 3200 | } |
39f77062 | 3201 | return inferior_ptid; |
43ff13b4 JM |
3202 | } |
3203 | ||
c906108c SS |
3204 | /* Number of bytes of registers this stub implements. */ |
3205 | ||
3206 | static int register_bytes_found; | |
3207 | ||
3208 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3209 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3210 | |
b96ec7ac AC |
3211 | static int |
3212 | fetch_register_using_p (int regnum) | |
3213 | { | |
3214 | struct remote_state *rs = get_remote_state (); | |
3215 | char *buf = alloca (rs->remote_packet_size), *p; | |
3216 | char regp[MAX_REGISTER_SIZE]; | |
3217 | int i; | |
3218 | ||
fcad0fa4 JB |
3219 | p = buf; |
3220 | *p++ = 'p'; | |
3221 | p += hexnumstr (p, regnum); | |
3222 | *p++ = '\0'; | |
b96ec7ac | 3223 | remote_send (buf, rs->remote_packet_size); |
3f9a994c JB |
3224 | |
3225 | /* If the stub didn't recognize the packet, or if we got an error, | |
3226 | tell our caller. */ | |
3227 | if (buf[0] == '\0' || buf[0] == 'E') | |
3228 | return 0; | |
3229 | ||
3230 | /* If this register is unfetchable, tell the regcache. */ | |
3231 | if (buf[0] == 'x') | |
8480adf2 | 3232 | { |
3f9a994c JB |
3233 | regcache_raw_supply (current_regcache, regnum, NULL); |
3234 | set_register_cached (regnum, -1); | |
8480adf2 | 3235 | return 1; |
b96ec7ac | 3236 | } |
b96ec7ac | 3237 | |
3f9a994c JB |
3238 | /* Otherwise, parse and supply the value. */ |
3239 | p = buf; | |
3240 | i = 0; | |
3241 | while (p[0] != 0) | |
3242 | { | |
3243 | if (p[1] == 0) | |
3244 | { | |
23860348 | 3245 | error ("fetch_register_using_p: early buf termination"); |
3f9a994c JB |
3246 | return 0; |
3247 | } | |
3248 | ||
3249 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3250 | p += 2; | |
3251 | } | |
3252 | regcache_raw_supply (current_regcache, regnum, regp); | |
3253 | return 1; | |
b96ec7ac AC |
3254 | } |
3255 | ||
c906108c | 3256 | static void |
ad10f812 | 3257 | remote_fetch_registers (int regnum) |
c906108c | 3258 | { |
d01949b6 AC |
3259 | struct remote_state *rs = get_remote_state (); |
3260 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3261 | int i; |
3262 | char *p; | |
ad10f812 | 3263 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3264 | |
39f77062 | 3265 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3266 | |
b323314b AC |
3267 | if (regnum >= 0) |
3268 | { | |
3269 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3270 | gdb_assert (reg != NULL); | |
3271 | if (!reg->in_g_packet) | |
3272 | internal_error (__FILE__, __LINE__, | |
3273 | "Attempt to fetch a non G-packet register when this " | |
3274 | "remote.c does not support the p-packet."); | |
3275 | } | |
b96ec7ac AC |
3276 | switch (remote_protocol_p.support) |
3277 | { | |
3278 | case PACKET_DISABLE: | |
3279 | break; | |
3280 | case PACKET_ENABLE: | |
3281 | if (fetch_register_using_p (regnum)) | |
3282 | return; | |
3283 | else | |
3284 | error ("Protocol error: p packet not recognized by stub"); | |
3285 | case PACKET_SUPPORT_UNKNOWN: | |
3286 | if (fetch_register_using_p (regnum)) | |
3287 | { | |
3288 | /* The stub recognized the 'p' packet. Remember this. */ | |
3289 | remote_protocol_p.support = PACKET_ENABLE; | |
3290 | return; | |
3291 | } | |
3292 | else | |
3293 | { | |
3294 | /* The stub does not support the 'P' packet. Use 'G' | |
3295 | instead, and don't try using 'P' in the future (it | |
3296 | will just waste our time). */ | |
3297 | remote_protocol_p.support = PACKET_DISABLE; | |
3298 | break; | |
3299 | } | |
3300 | } | |
b323314b | 3301 | |
c906108c | 3302 | sprintf (buf, "g"); |
d01949b6 | 3303 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3304 | |
11cf8741 JM |
3305 | /* Save the size of the packet sent to us by the target. Its used |
3306 | as a heuristic when determining the max size of packets that the | |
23860348 | 3307 | target can safely receive. */ |
d01949b6 AC |
3308 | if ((rs->actual_register_packet_size) == 0) |
3309 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3310 | |
3311 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3312 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3313 | |
3314 | /* We can get out of synch in various cases. If the first character | |
3315 | in the buffer is not a hex character, assume that has happened | |
3316 | and try to fetch another packet to read. */ | |
3317 | while ((buf[0] < '0' || buf[0] > '9') | |
3318 | && (buf[0] < 'a' || buf[0] > 'f') | |
23860348 | 3319 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3320 | { |
3321 | if (remote_debug) | |
0f71a2f6 JM |
3322 | fprintf_unfiltered (gdb_stdlog, |
3323 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3324 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3325 | } |
3326 | ||
3327 | /* Reply describes registers byte by byte, each byte encoded as two | |
3328 | hex characters. Suck them all up, then supply them to the | |
3329 | register cacheing/storage mechanism. */ | |
3330 | ||
3331 | p = buf; | |
ad10f812 | 3332 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3333 | { |
3334 | if (p[0] == 0) | |
3335 | break; | |
3336 | if (p[1] == 0) | |
3337 | { | |
3338 | warning ("Remote reply is of odd length: %s", buf); | |
3339 | /* Don't change register_bytes_found in this case, and don't | |
3340 | print a second warning. */ | |
3341 | goto supply_them; | |
3342 | } | |
3343 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3344 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3345 | else |
3346 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3347 | p += 2; | |
3348 | } | |
3349 | ||
3350 | if (i != register_bytes_found) | |
3351 | { | |
3352 | register_bytes_found = i; | |
2649061d AC |
3353 | if (REGISTER_BYTES_OK_P () |
3354 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3355 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3356 | } |
c5aa993b | 3357 | |
b323314b | 3358 | supply_them: |
ad10f812 | 3359 | { |
b323314b AC |
3360 | int i; |
3361 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3362 | { |
b323314b AC |
3363 | struct packet_reg *r = &rs->regs[i]; |
3364 | if (r->in_g_packet) | |
3365 | { | |
8ccc1287 AC |
3366 | if (r->offset * 2 >= strlen (buf)) |
3367 | /* A short packet that didn't include the register's | |
3368 | value, this implies that the register is zero (and | |
3369 | not that the register is unavailable). Supply that | |
3370 | zero value. */ | |
3371 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3372 | else if (buf[r->offset * 2] == 'x') | |
3373 | { | |
3374 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3375 | /* The register isn't available, mark it as such (at | |
3376 | the same time setting the value to zero). */ | |
3377 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3378 | set_register_cached (i, -1); | |
3379 | } | |
3380 | else | |
3381 | regcache_raw_supply (current_regcache, r->regnum, | |
3382 | regs + r->offset); | |
b323314b | 3383 | } |
ad10f812 AC |
3384 | } |
3385 | } | |
c906108c SS |
3386 | } |
3387 | ||
3388 | /* Prepare to store registers. Since we may send them all (using a | |
3389 | 'G' request), we have to read out the ones we don't want to change | |
3390 | first. */ | |
3391 | ||
c5aa993b | 3392 | static void |
fba45db2 | 3393 | remote_prepare_to_store (void) |
c906108c | 3394 | { |
cf0e1e0d DJ |
3395 | struct remote_state *rs = get_remote_state (); |
3396 | int i; | |
3397 | char buf[MAX_REGISTER_SIZE]; | |
3398 | ||
c906108c | 3399 | /* Make sure the entire registers array is valid. */ |
5a2468f5 JM |
3400 | switch (remote_protocol_P.support) |
3401 | { | |
3402 | case PACKET_DISABLE: | |
3403 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3404 | /* Make sure all the necessary registers are cached. */ |
3405 | for (i = 0; i < NUM_REGS; i++) | |
3406 | if (rs->regs[i].in_g_packet) | |
3407 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3408 | break; |
3409 | case PACKET_ENABLE: | |
3410 | break; | |
3411 | } | |
3412 | } | |
3413 | ||
ad10f812 | 3414 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3415 | packet was not recognized. */ |
5a2468f5 JM |
3416 | |
3417 | static int | |
ad10f812 | 3418 | store_register_using_P (int regnum) |
5a2468f5 | 3419 | { |
d01949b6 | 3420 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3421 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3422 | /* Try storing a single register. */ |
d01949b6 | 3423 | char *buf = alloca (rs->remote_packet_size); |
d9d9c31f | 3424 | char regp[MAX_REGISTER_SIZE]; |
5a2468f5 JM |
3425 | char *p; |
3426 | int i; | |
3427 | ||
ad10f812 | 3428 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3429 | p = buf + strlen (buf); |
822c9732 | 3430 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3431 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
ad10f812 | 3432 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3433 | |
3434 | return buf[0] != '\0'; | |
c906108c SS |
3435 | } |
3436 | ||
5a2468f5 | 3437 | |
23860348 MS |
3438 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3439 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3440 | |
3441 | static void | |
ad10f812 | 3442 | remote_store_registers (int regnum) |
c906108c | 3443 | { |
d01949b6 | 3444 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3445 | char *buf; |
3446 | char *regs; | |
c906108c SS |
3447 | int i; |
3448 | char *p; | |
3449 | ||
39f77062 | 3450 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3451 | |
ad10f812 | 3452 | if (regnum >= 0) |
c906108c | 3453 | { |
5a2468f5 | 3454 | switch (remote_protocol_P.support) |
c906108c | 3455 | { |
5a2468f5 JM |
3456 | case PACKET_DISABLE: |
3457 | break; | |
3458 | case PACKET_ENABLE: | |
ad10f812 | 3459 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3460 | return; |
3461 | else | |
3462 | error ("Protocol error: P packet not recognized by stub"); | |
3463 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3464 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3465 | { |
3466 | /* The stub recognized the 'P' packet. Remember this. */ | |
3467 | remote_protocol_P.support = PACKET_ENABLE; | |
3468 | return; | |
3469 | } | |
3470 | else | |
3471 | { | |
3472 | /* The stub does not support the 'P' packet. Use 'G' | |
3473 | instead, and don't try using 'P' in the future (it | |
3474 | will just waste our time). */ | |
3475 | remote_protocol_P.support = PACKET_DISABLE; | |
3476 | break; | |
3477 | } | |
c906108c | 3478 | } |
c906108c SS |
3479 | } |
3480 | ||
193cb69f AC |
3481 | /* Extract all the registers in the regcache copying them into a |
3482 | local buffer. */ | |
3483 | { | |
b323314b | 3484 | int i; |
ad10f812 AC |
3485 | regs = alloca (rs->sizeof_g_packet); |
3486 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3487 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3488 | { |
b323314b AC |
3489 | struct packet_reg *r = &rs->regs[i]; |
3490 | if (r->in_g_packet) | |
822c9732 | 3491 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3492 | } |
3493 | } | |
c906108c SS |
3494 | |
3495 | /* Command describes registers byte by byte, | |
3496 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3497 | buf = alloca (rs->remote_packet_size); |
3498 | p = buf; | |
3499 | *p++ = 'G'; | |
c906108c | 3500 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3501 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3502 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3503 | } |
c906108c SS |
3504 | \f |
3505 | ||
3506 | /* Return the number of hex digits in num. */ | |
3507 | ||
3508 | static int | |
fba45db2 | 3509 | hexnumlen (ULONGEST num) |
c906108c SS |
3510 | { |
3511 | int i; | |
3512 | ||
3513 | for (i = 0; num != 0; i++) | |
3514 | num >>= 4; | |
3515 | ||
3516 | return max (i, 1); | |
3517 | } | |
3518 | ||
2df3850c | 3519 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3520 | |
3521 | static int | |
fba45db2 | 3522 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3523 | { |
c906108c | 3524 | int len = hexnumlen (num); |
2df3850c JM |
3525 | return hexnumnstr (buf, num, len); |
3526 | } | |
3527 | ||
c906108c | 3528 | |
2df3850c | 3529 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3530 | |
2df3850c | 3531 | static int |
fba45db2 | 3532 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3533 | { |
3534 | int i; | |
3535 | ||
3536 | buf[width] = '\0'; | |
3537 | ||
3538 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3539 | { |
c5aa993b | 3540 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3541 | num >>= 4; |
3542 | } | |
3543 | ||
2df3850c | 3544 | return width; |
c906108c SS |
3545 | } |
3546 | ||
23860348 | 3547 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3548 | |
3549 | static CORE_ADDR | |
fba45db2 | 3550 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3551 | { |
3552 | if (remote_address_size > 0 | |
3553 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3554 | { | |
3555 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3556 | in a ULONGEST variable. */ |
c906108c SS |
3557 | ULONGEST mask = 1; |
3558 | mask = (mask << remote_address_size) - 1; | |
3559 | addr &= mask; | |
3560 | } | |
3561 | return addr; | |
3562 | } | |
3563 | ||
3564 | /* Determine whether the remote target supports binary downloading. | |
3565 | This is accomplished by sending a no-op memory write of zero length | |
3566 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3567 | the whole packet, since many stubs strip the eighth bit and |
3568 | subsequently compute a wrong checksum, which causes real havoc with | |
3569 | remote_write_bytes. | |
7a292a7a | 3570 | |
96baa820 JM |
3571 | NOTE: This can still lose if the serial line is not eight-bit |
3572 | clean. In cases like this, the user should clear "remote | |
23860348 | 3573 | X-packet". */ |
96baa820 | 3574 | |
c906108c | 3575 | static void |
fba45db2 | 3576 | check_binary_download (CORE_ADDR addr) |
c906108c | 3577 | { |
d01949b6 | 3578 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3579 | switch (remote_protocol_binary_download.support) |
c906108c | 3580 | { |
96baa820 JM |
3581 | case PACKET_DISABLE: |
3582 | break; | |
3583 | case PACKET_ENABLE: | |
3584 | break; | |
3585 | case PACKET_SUPPORT_UNKNOWN: | |
3586 | { | |
d01949b6 | 3587 | char *buf = alloca (rs->remote_packet_size); |
96baa820 | 3588 | char *p; |
802188a7 | 3589 | |
96baa820 JM |
3590 | p = buf; |
3591 | *p++ = 'X'; | |
3592 | p += hexnumstr (p, (ULONGEST) addr); | |
3593 | *p++ = ','; | |
3594 | p += hexnumstr (p, (ULONGEST) 0); | |
3595 | *p++ = ':'; | |
3596 | *p = '\0'; | |
802188a7 | 3597 | |
96baa820 | 3598 | putpkt_binary (buf, (int) (p - buf)); |
d01949b6 | 3599 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3600 | |
96baa820 JM |
3601 | if (buf[0] == '\0') |
3602 | { | |
3603 | if (remote_debug) | |
3604 | fprintf_unfiltered (gdb_stdlog, | |
3605 | "binary downloading NOT suppported by target\n"); | |
3606 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3607 | } | |
3608 | else | |
3609 | { | |
3610 | if (remote_debug) | |
3611 | fprintf_unfiltered (gdb_stdlog, | |
3612 | "binary downloading suppported by target\n"); | |
3613 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3614 | } | |
3615 | break; | |
3616 | } | |
c906108c SS |
3617 | } |
3618 | } | |
3619 | ||
3620 | /* Write memory data directly to the remote machine. | |
3621 | This does not inform the data cache; the data cache uses this. | |
3622 | MEMADDR is the address in the remote memory space. | |
3623 | MYADDR is the address of the buffer in our space. | |
3624 | LEN is the number of bytes. | |
3625 | ||
917317f4 | 3626 | Returns number of bytes transferred, or 0 (setting errno) for |
23860348 | 3627 | error. Only transfer a single packet. */ |
c906108c | 3628 | |
449092f6 | 3629 | int |
917317f4 | 3630 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3631 | { |
917317f4 | 3632 | unsigned char *buf; |
917317f4 JM |
3633 | unsigned char *p; |
3634 | unsigned char *plen; | |
c2d11a7d | 3635 | long sizeof_buf; |
917317f4 JM |
3636 | int plenlen; |
3637 | int todo; | |
3638 | int nr_bytes; | |
a257b5bb AC |
3639 | int payload_size; |
3640 | unsigned char *payload_start; | |
c906108c | 3641 | |
a257b5bb | 3642 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3643 | check_binary_download (memaddr); |
3644 | ||
a257b5bb | 3645 | /* Compute the size, and then allocate space for the largest |
23860348 | 3646 | possible packet. Include space for an extra trailing NULL. */ |
a257b5bb | 3647 | sizeof_buf = get_memory_write_packet_size () + 1; |
c2d11a7d | 3648 | buf = alloca (sizeof_buf); |
c906108c | 3649 | |
a257b5bb AC |
3650 | /* Compute the size of the actual payload by subtracting out the |
3651 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ | |
3652 | payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN") | |
3653 | + hexnumlen (memaddr) | |
3654 | + hexnumlen (len))); | |
c906108c | 3655 | |
a257b5bb | 3656 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3657 | |
a257b5bb | 3658 | /* Append "[XM]". Compute a best guess of the number of bytes |
23860348 | 3659 | actually transfered. */ |
a257b5bb | 3660 | p = buf; |
917317f4 | 3661 | switch (remote_protocol_binary_download.support) |
c906108c | 3662 | { |
917317f4 JM |
3663 | case PACKET_ENABLE: |
3664 | *p++ = 'X'; | |
23860348 | 3665 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3666 | todo = min (len, payload_size); |
917317f4 JM |
3667 | break; |
3668 | case PACKET_DISABLE: | |
3669 | *p++ = 'M'; | |
23860348 | 3670 | /* Num bytes that will fit. */ |
a257b5bb | 3671 | todo = min (len, payload_size / 2); |
917317f4 JM |
3672 | break; |
3673 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3674 | internal_error (__FILE__, __LINE__, |
3675 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3676 | default: |
8e65ff28 | 3677 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 | 3678 | } |
802188a7 | 3679 | |
a257b5bb | 3680 | /* Append "<memaddr>". */ |
917317f4 JM |
3681 | memaddr = remote_address_masked (memaddr); |
3682 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3683 | |
3684 | /* Append ",". */ | |
917317f4 | 3685 | *p++ = ','; |
802188a7 | 3686 | |
a257b5bb AC |
3687 | /* Append <len>. Retain the location/size of <len>. It may need to |
3688 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3689 | plen = p; |
3690 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3691 | p += plenlen; | |
a257b5bb AC |
3692 | |
3693 | /* Append ":". */ | |
917317f4 JM |
3694 | *p++ = ':'; |
3695 | *p = '\0'; | |
802188a7 | 3696 | |
a257b5bb AC |
3697 | /* Append the packet body. */ |
3698 | payload_start = p; | |
917317f4 JM |
3699 | switch (remote_protocol_binary_download.support) |
3700 | { | |
3701 | case PACKET_ENABLE: | |
3702 | /* Binary mode. Send target system values byte by byte, in | |
3703 | increasing byte addresses. Only escape certain critical | |
3704 | characters. */ | |
3705 | for (nr_bytes = 0; | |
a257b5bb | 3706 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3707 | nr_bytes++) |
c906108c | 3708 | { |
917317f4 JM |
3709 | switch (myaddr[nr_bytes] & 0xff) |
3710 | { | |
3711 | case '$': | |
3712 | case '#': | |
3713 | case 0x7d: | |
23860348 | 3714 | /* These must be escaped. */ |
917317f4 JM |
3715 | *p++ = 0x7d; |
3716 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3717 | break; | |
3718 | default: | |
3719 | *p++ = myaddr[nr_bytes] & 0xff; | |
3720 | break; | |
3721 | } | |
c906108c | 3722 | } |
917317f4 | 3723 | if (nr_bytes < todo) |
c906108c | 3724 | { |
802188a7 | 3725 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3726 | and we have actually sent fewer bytes than planned. |
3727 | Fix-up the length field of the packet. Use the same | |
3728 | number of characters as before. */ | |
917317f4 JM |
3729 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3730 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3731 | } |
917317f4 JM |
3732 | break; |
3733 | case PACKET_DISABLE: | |
3734 | /* Normal mode: Send target system values byte by byte, in | |
3735 | increasing byte addresses. Each byte is encoded as a two hex | |
3736 | value. */ | |
2644f393 | 3737 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3738 | p += 2 * nr_bytes; |
917317f4 JM |
3739 | break; |
3740 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3741 | internal_error (__FILE__, __LINE__, |
3742 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3743 | default: |
8e65ff28 | 3744 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3745 | } |
802188a7 | 3746 | |
917317f4 | 3747 | putpkt_binary (buf, (int) (p - buf)); |
c2d11a7d | 3748 | getpkt (buf, sizeof_buf, 0); |
802188a7 | 3749 | |
917317f4 JM |
3750 | if (buf[0] == 'E') |
3751 | { | |
3752 | /* There is no correspondance between what the remote protocol | |
3753 | uses for errors and errno codes. We would like a cleaner way | |
3754 | of representing errors (big enough to include errno codes, | |
3755 | bfd_error codes, and others). But for now just return EIO. */ | |
3756 | errno = EIO; | |
3757 | return 0; | |
3758 | } | |
802188a7 | 3759 | |
23860348 MS |
3760 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
3761 | fewer bytes than we'd planned. */ | |
917317f4 | 3762 | return nr_bytes; |
c906108c SS |
3763 | } |
3764 | ||
3765 | /* Read memory data directly from the remote machine. | |
3766 | This does not use the data cache; the data cache uses this. | |
3767 | MEMADDR is the address in the remote memory space. | |
3768 | MYADDR is the address of the buffer in our space. | |
3769 | LEN is the number of bytes. | |
3770 | ||
3771 | Returns number of bytes transferred, or 0 for error. */ | |
3772 | ||
917317f4 JM |
3773 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3774 | remote targets) shouldn't attempt to read the entire buffer. | |
3775 | Instead it should read a single packet worth of data and then | |
3776 | return the byte size of that packet to the caller. The caller (its | |
3777 | caller and its callers caller ;-) already contains code for | |
23860348 | 3778 | handling partial reads. */ |
917317f4 | 3779 | |
449092f6 | 3780 | int |
fba45db2 | 3781 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3782 | { |
11cf8741 | 3783 | char *buf; |
23860348 | 3784 | int max_buf_size; /* Max size of packet output buffer. */ |
c2d11a7d | 3785 | long sizeof_buf; |
c906108c SS |
3786 | int origlen; |
3787 | ||
23860348 | 3788 | /* Create a buffer big enough for this packet. */ |
11cf8741 | 3789 | max_buf_size = get_memory_read_packet_size (); |
23860348 | 3790 | sizeof_buf = max_buf_size + 1; /* Space for trailing NULL. */ |
c2d11a7d | 3791 | buf = alloca (sizeof_buf); |
c906108c SS |
3792 | |
3793 | origlen = len; | |
3794 | while (len > 0) | |
3795 | { | |
c906108c SS |
3796 | char *p; |
3797 | int todo; | |
3798 | int i; | |
3799 | ||
c5aa993b | 3800 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3801 | |
3802 | /* construct "m"<memaddr>","<len>" */ | |
3803 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3804 | memaddr = remote_address_masked (memaddr); | |
3805 | p = buf; | |
3806 | *p++ = 'm'; | |
3807 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3808 | *p++ = ','; | |
3809 | p += hexnumstr (p, (ULONGEST) todo); | |
3810 | *p = '\0'; | |
3811 | ||
3812 | putpkt (buf); | |
c2d11a7d | 3813 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3814 | |
66504d44 MS |
3815 | if (buf[0] == 'E' |
3816 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3817 | && buf[3] == '\0') | |
c906108c | 3818 | { |
23860348 MS |
3819 | /* There is no correspondance between what the remote |
3820 | protocol uses for errors and errno codes. We would like | |
3821 | a cleaner way of representing errors (big enough to | |
3822 | include errno codes, bfd_error codes, and others). But | |
3823 | for now just return EIO. */ | |
c906108c SS |
3824 | errno = EIO; |
3825 | return 0; | |
3826 | } | |
3827 | ||
c5aa993b JM |
3828 | /* Reply describes memory byte by byte, |
3829 | each byte encoded as two hex characters. */ | |
c906108c SS |
3830 | |
3831 | p = buf; | |
30559e10 | 3832 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3833 | { |
30559e10 | 3834 | /* Reply is short. This means that we were able to read |
23860348 | 3835 | only part of what we wanted to. */ |
30559e10 | 3836 | return i + (origlen - len); |
c906108c SS |
3837 | } |
3838 | myaddr += todo; | |
3839 | memaddr += todo; | |
3840 | len -= todo; | |
3841 | } | |
3842 | return origlen; | |
3843 | } | |
3844 | \f | |
3845 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
3846 | transferring to or from debugger address BUFFER. Write to inferior |
3847 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
3848 | read; 0 for error. TARGET is unused. */ | |
392a587b | 3849 | |
c906108c | 3850 | static int |
c338868a | 3851 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 3852 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3853 | struct target_ops *target) |
c906108c | 3854 | { |
392a587b JM |
3855 | CORE_ADDR targ_addr; |
3856 | int targ_len; | |
4930751a C |
3857 | int res; |
3858 | ||
f6684c31 | 3859 | /* Should this be the selected frame? */ |
23860348 MS |
3860 | gdbarch_remote_translate_xfer_address (current_gdbarch, |
3861 | current_regcache, | |
f6684c31 AC |
3862 | mem_addr, mem_len, |
3863 | &targ_addr, &targ_len); | |
392a587b | 3864 | if (targ_len <= 0) |
c906108c | 3865 | return 0; |
c906108c | 3866 | |
4930751a C |
3867 | if (should_write) |
3868 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3869 | else | |
3870 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3871 | ||
3872 | return res; | |
c906108c SS |
3873 | } |
3874 | ||
c906108c | 3875 | static void |
fba45db2 | 3876 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3877 | { |
3878 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3879 | } | |
3880 | \f | |
3881 | /* Stuff for dealing with the packets which are part of this protocol. | |
3882 | See comment at top of file for details. */ | |
3883 | ||
23860348 MS |
3884 | /* Read a single character from the remote end, masking it down to 7 |
3885 | bits. */ | |
c906108c SS |
3886 | |
3887 | static int | |
fba45db2 | 3888 | readchar (int timeout) |
c906108c SS |
3889 | { |
3890 | int ch; | |
3891 | ||
2cd58942 | 3892 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3893 | |
2acceee2 JM |
3894 | if (ch >= 0) |
3895 | return (ch & 0x7f); | |
3896 | ||
3897 | switch ((enum serial_rc) ch) | |
c906108c SS |
3898 | { |
3899 | case SERIAL_EOF: | |
2acceee2 | 3900 | target_mourn_inferior (); |
c906108c | 3901 | error ("Remote connection closed"); |
2acceee2 | 3902 | /* no return */ |
c906108c SS |
3903 | case SERIAL_ERROR: |
3904 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3905 | /* no return */ |
c906108c | 3906 | case SERIAL_TIMEOUT: |
2acceee2 | 3907 | break; |
c906108c | 3908 | } |
2acceee2 | 3909 | return ch; |
c906108c SS |
3910 | } |
3911 | ||
3912 | /* Send the command in BUF to the remote machine, and read the reply | |
3913 | into BUF. Report an error if we get an error reply. */ | |
3914 | ||
3915 | static void | |
c2d11a7d JM |
3916 | remote_send (char *buf, |
3917 | long sizeof_buf) | |
c906108c SS |
3918 | { |
3919 | putpkt (buf); | |
c2d11a7d | 3920 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3921 | |
3922 | if (buf[0] == 'E') | |
3923 | error ("Remote failure reply: %s", buf); | |
3924 | } | |
3925 | ||
3926 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3927 | string notation. */ | |
3928 | ||
3929 | static void | |
fba45db2 | 3930 | print_packet (char *buf) |
c906108c SS |
3931 | { |
3932 | puts_filtered ("\""); | |
43e526b9 | 3933 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3934 | puts_filtered ("\""); |
3935 | } | |
3936 | ||
3937 | int | |
fba45db2 | 3938 | putpkt (char *buf) |
c906108c SS |
3939 | { |
3940 | return putpkt_binary (buf, strlen (buf)); | |
3941 | } | |
3942 | ||
3943 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 MS |
3944 | of the packet is in BUF. The string in BUF can be at most |
3945 | (rs->remote_packet_size) - 5 to account for the $, # and checksum, | |
3946 | and for a possible /0 if we are debugging (remote_debug) and want | |
3947 | to print the sent packet as a string. */ | |
c906108c SS |
3948 | |
3949 | static int | |
fba45db2 | 3950 | putpkt_binary (char *buf, int cnt) |
c906108c | 3951 | { |
d01949b6 | 3952 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3953 | int i; |
3954 | unsigned char csum = 0; | |
11cf8741 | 3955 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 3956 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 3957 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 3958 | |
c906108c SS |
3959 | int ch; |
3960 | int tcount = 0; | |
3961 | char *p; | |
3962 | ||
3963 | /* Copy the packet into buffer BUF2, encapsulating it | |
3964 | and giving it a checksum. */ | |
3965 | ||
c906108c SS |
3966 | p = buf2; |
3967 | *p++ = '$'; | |
3968 | ||
3969 | for (i = 0; i < cnt; i++) | |
3970 | { | |
3971 | csum += buf[i]; | |
3972 | *p++ = buf[i]; | |
3973 | } | |
3974 | *p++ = '#'; | |
3975 | *p++ = tohex ((csum >> 4) & 0xf); | |
3976 | *p++ = tohex (csum & 0xf); | |
3977 | ||
3978 | /* Send it over and over until we get a positive ack. */ | |
3979 | ||
3980 | while (1) | |
3981 | { | |
3982 | int started_error_output = 0; | |
3983 | ||
3984 | if (remote_debug) | |
3985 | { | |
3986 | *p = '\0'; | |
43e526b9 JM |
3987 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3988 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3989 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3990 | gdb_flush (gdb_stdlog); |
c906108c | 3991 | } |
2cd58942 | 3992 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
3993 | perror_with_name ("putpkt: write failed"); |
3994 | ||
23860348 | 3995 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
3996 | while (1) |
3997 | { | |
3998 | ch = readchar (remote_timeout); | |
3999 | ||
c5aa993b | 4000 | if (remote_debug) |
c906108c SS |
4001 | { |
4002 | switch (ch) | |
4003 | { | |
4004 | case '+': | |
1216fa2c | 4005 | case '-': |
c906108c SS |
4006 | case SERIAL_TIMEOUT: |
4007 | case '$': | |
4008 | if (started_error_output) | |
4009 | { | |
4010 | putchar_unfiltered ('\n'); | |
4011 | started_error_output = 0; | |
4012 | } | |
4013 | } | |
4014 | } | |
4015 | ||
4016 | switch (ch) | |
4017 | { | |
4018 | case '+': | |
4019 | if (remote_debug) | |
0f71a2f6 | 4020 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4021 | return 1; |
1216fa2c AC |
4022 | case '-': |
4023 | if (remote_debug) | |
4024 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4025 | case SERIAL_TIMEOUT: |
c5aa993b | 4026 | tcount++; |
c906108c SS |
4027 | if (tcount > 3) |
4028 | return 0; | |
23860348 | 4029 | break; /* Retransmit buffer. */ |
c906108c SS |
4030 | case '$': |
4031 | { | |
40e3f985 | 4032 | if (remote_debug) |
23860348 MS |
4033 | fprintf_unfiltered (gdb_stdlog, |
4034 | "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
4035 | /* It's probably an old response sent because an ACK |
4036 | was lost. Gobble up the packet and ack it so it | |
4037 | doesn't get retransmitted when we resend this | |
4038 | packet. */ | |
40e3f985 | 4039 | read_frame (junkbuf, sizeof_junkbuf); |
d6f7abdf | 4040 | serial_write (remote_desc, "+", 1); |
23860348 | 4041 | continue; /* Now, go look for +. */ |
c906108c SS |
4042 | } |
4043 | default: | |
4044 | if (remote_debug) | |
4045 | { | |
4046 | if (!started_error_output) | |
4047 | { | |
4048 | started_error_output = 1; | |
0f71a2f6 | 4049 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4050 | } |
0f71a2f6 | 4051 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4052 | } |
4053 | continue; | |
4054 | } | |
23860348 | 4055 | break; /* Here to retransmit. */ |
c906108c SS |
4056 | } |
4057 | ||
4058 | #if 0 | |
4059 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4060 | able to get out next time we call QUIT, without anything as |
4061 | violent as interrupt_query. If we want to provide a way out of | |
4062 | here without getting to the next QUIT, it should be based on | |
4063 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4064 | if (quit_flag) |
4065 | { | |
4066 | quit_flag = 0; | |
4067 | interrupt_query (); | |
4068 | } | |
4069 | #endif | |
4070 | } | |
4071 | } | |
4072 | ||
4073 | /* Come here after finding the start of the frame. Collect the rest | |
4074 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4075 | compression. No more than sizeof_buf-1 characters are read so that |
4076 | the buffer can be NUL terminated. | |
c906108c | 4077 | |
c2d11a7d JM |
4078 | Returns -1 on error, number of characters in buffer (ignoring the |
4079 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4080 | SERIAL status indications). */ |
c2d11a7d JM |
4081 | |
4082 | static long | |
4083 | read_frame (char *buf, | |
4084 | long sizeof_buf) | |
c906108c SS |
4085 | { |
4086 | unsigned char csum; | |
c2d11a7d | 4087 | long bc; |
c906108c SS |
4088 | int c; |
4089 | ||
4090 | csum = 0; | |
c2d11a7d | 4091 | bc = 0; |
c906108c SS |
4092 | |
4093 | while (1) | |
4094 | { | |
23860348 | 4095 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NULL. */ |
c906108c | 4096 | c = readchar (remote_timeout); |
c906108c SS |
4097 | switch (c) |
4098 | { | |
4099 | case SERIAL_TIMEOUT: | |
4100 | if (remote_debug) | |
0f71a2f6 | 4101 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4102 | return -1; |
c906108c SS |
4103 | case '$': |
4104 | if (remote_debug) | |
0f71a2f6 JM |
4105 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4106 | gdb_stdlog); | |
23860348 | 4107 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4108 | case '#': |
4109 | { | |
4110 | unsigned char pktcsum; | |
e1b09194 AC |
4111 | int check_0 = 0; |
4112 | int check_1 = 0; | |
c906108c | 4113 | |
c2d11a7d | 4114 | buf[bc] = '\0'; |
c906108c | 4115 | |
e1b09194 AC |
4116 | check_0 = readchar (remote_timeout); |
4117 | if (check_0 >= 0) | |
4118 | check_1 = readchar (remote_timeout); | |
802188a7 | 4119 | |
e1b09194 AC |
4120 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4121 | { | |
4122 | if (remote_debug) | |
23860348 MS |
4123 | fputs_filtered ("Timeout in checksum, retrying\n", |
4124 | gdb_stdlog); | |
e1b09194 AC |
4125 | return -1; |
4126 | } | |
4127 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4128 | { |
4129 | if (remote_debug) | |
23860348 MS |
4130 | fputs_filtered ("Communication error in checksum\n", |
4131 | gdb_stdlog); | |
40e3f985 FN |
4132 | return -1; |
4133 | } | |
c906108c | 4134 | |
e1b09194 | 4135 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4136 | if (csum == pktcsum) |
c2d11a7d | 4137 | return bc; |
c906108c | 4138 | |
c5aa993b | 4139 | if (remote_debug) |
c906108c | 4140 | { |
0f71a2f6 | 4141 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4142 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4143 | pktcsum, csum); |
4144 | fputs_filtered (buf, gdb_stdlog); | |
4145 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4146 | } |
c2d11a7d | 4147 | /* Number of characters in buffer ignoring trailing |
23860348 | 4148 | NULL. */ |
c2d11a7d | 4149 | return -1; |
c906108c | 4150 | } |
23860348 | 4151 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4152 | { |
4153 | int repeat; | |
4154 | csum += c; | |
c906108c | 4155 | |
b4501125 AC |
4156 | c = readchar (remote_timeout); |
4157 | csum += c; | |
23860348 | 4158 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4159 | |
23860348 | 4160 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4161 | |
802188a7 | 4162 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4163 | && bc > 0 |
fb6e5c55 | 4164 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4165 | { |
c2d11a7d JM |
4166 | memset (&buf[bc], buf[bc - 1], repeat); |
4167 | bc += repeat; | |
c2c6d25f JM |
4168 | continue; |
4169 | } | |
4170 | ||
c2d11a7d | 4171 | buf[bc] = '\0'; |
23860348 MS |
4172 | printf_filtered ("Repeat count %d too large for buffer: ", |
4173 | repeat); | |
c2c6d25f JM |
4174 | puts_filtered (buf); |
4175 | puts_filtered ("\n"); | |
c2d11a7d | 4176 | return -1; |
c2c6d25f | 4177 | } |
c906108c | 4178 | default: |
c2d11a7d | 4179 | if (bc < sizeof_buf - 1) |
c906108c | 4180 | { |
c2d11a7d | 4181 | buf[bc++] = c; |
c906108c SS |
4182 | csum += c; |
4183 | continue; | |
4184 | } | |
4185 | ||
c2d11a7d | 4186 | buf[bc] = '\0'; |
c906108c SS |
4187 | puts_filtered ("Remote packet too long: "); |
4188 | puts_filtered (buf); | |
4189 | puts_filtered ("\n"); | |
4190 | ||
c2d11a7d | 4191 | return -1; |
c906108c SS |
4192 | } |
4193 | } | |
4194 | } | |
4195 | ||
4196 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4197 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4198 | this is used (in synchronous mode) to wait for a target that is is | |
4199 | executing user code to stop. */ | |
d9fcf2fb JM |
4200 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4201 | don't have to change all the calls to getpkt to deal with the | |
4202 | return value, because at the moment I don't know what the right | |
23860348 | 4203 | thing to do it for those. */ |
c906108c | 4204 | void |
c2d11a7d JM |
4205 | getpkt (char *buf, |
4206 | long sizeof_buf, | |
4207 | int forever) | |
d9fcf2fb JM |
4208 | { |
4209 | int timed_out; | |
4210 | ||
4211 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4212 | } | |
4213 | ||
4214 | ||
4215 | /* Read a packet from the remote machine, with error checking, and | |
4216 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4217 | this is used (in synchronous mode) to wait for a target that is is | |
4218 | executing user code to stop. If FOREVER == 0, this function is | |
4219 | allowed to time out gracefully and return an indication of this to | |
23860348 | 4220 | the caller. */ |
3172dc30 | 4221 | static int |
d9fcf2fb JM |
4222 | getpkt_sane (char *buf, |
4223 | long sizeof_buf, | |
4224 | int forever) | |
c906108c SS |
4225 | { |
4226 | int c; | |
4227 | int tries; | |
4228 | int timeout; | |
4229 | int val; | |
4230 | ||
c5aa993b | 4231 | strcpy (buf, "timeout"); |
c906108c SS |
4232 | |
4233 | if (forever) | |
4234 | { | |
c906108c | 4235 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4236 | } |
4237 | ||
4238 | else | |
4239 | timeout = remote_timeout; | |
4240 | ||
4241 | #define MAX_TRIES 3 | |
4242 | ||
4243 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4244 | { | |
4245 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4246 | continuously, but if it pauses, we'll get a zero from |
4247 | readchar because of timeout. Then we'll count that as a | |
4248 | retry. */ | |
c906108c | 4249 | |
23860348 MS |
4250 | /* Note that we will only wait forever prior to the start of a |
4251 | packet. After that, we expect characters to arrive at a | |
4252 | brisk pace. They should show up within remote_timeout | |
4253 | intervals. */ | |
c906108c SS |
4254 | |
4255 | do | |
4256 | { | |
4257 | c = readchar (timeout); | |
4258 | ||
4259 | if (c == SERIAL_TIMEOUT) | |
4260 | { | |
23860348 | 4261 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4262 | { |
2acceee2 | 4263 | QUIT; |
c906108c SS |
4264 | target_mourn_inferior (); |
4265 | error ("Watchdog has expired. Target detached.\n"); | |
4266 | } | |
c906108c | 4267 | if (remote_debug) |
0f71a2f6 | 4268 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4269 | goto retry; |
4270 | } | |
4271 | } | |
4272 | while (c != '$'); | |
4273 | ||
4274 | /* We've found the start of a packet, now collect the data. */ | |
4275 | ||
c2d11a7d | 4276 | val = read_frame (buf, sizeof_buf); |
c906108c | 4277 | |
c2d11a7d | 4278 | if (val >= 0) |
c906108c SS |
4279 | { |
4280 | if (remote_debug) | |
43e526b9 JM |
4281 | { |
4282 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4283 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4284 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4285 | } | |
2cd58942 | 4286 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4287 | return 0; |
c906108c SS |
4288 | } |
4289 | ||
4290 | /* Try the whole thing again. */ | |
4291 | retry: | |
2cd58942 | 4292 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4293 | } |
4294 | ||
23860348 MS |
4295 | /* We have tried hard enough, and just can't receive the packet. |
4296 | Give up. */ | |
c906108c SS |
4297 | |
4298 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4299 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4300 | return 1; |
c906108c SS |
4301 | } |
4302 | \f | |
4303 | static void | |
fba45db2 | 4304 | remote_kill (void) |
c906108c SS |
4305 | { |
4306 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4307 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4308 | if (kill_kludge) | |
4309 | { | |
4310 | kill_kludge = 0; | |
4311 | target_mourn_inferior (); | |
4312 | return; | |
4313 | } | |
4314 | ||
4315 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4316 | speaking terms with the remote system. */ | |
c5aa993b | 4317 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4318 | |
4319 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4320 | we do or not. For the existing stubs, kill is a noop. */ | |
4321 | target_mourn_inferior (); | |
4322 | } | |
4323 | ||
23860348 | 4324 | /* Async version of remote_kill. */ |
43ff13b4 | 4325 | static void |
fba45db2 | 4326 | remote_async_kill (void) |
43ff13b4 | 4327 | { |
23860348 | 4328 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4329 | if (target_is_async_p ()) |
2cd58942 | 4330 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4331 | |
4332 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4333 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4334 | if (kill_kludge) | |
4335 | { | |
4336 | kill_kludge = 0; | |
4337 | target_mourn_inferior (); | |
4338 | return; | |
4339 | } | |
4340 | ||
23860348 MS |
4341 | /* Use catch_errors so the user can quit from gdb even when we |
4342 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4343 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4344 | |
4345 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4346 | we do or not. For the existing stubs, kill is a noop. */ | |
4347 | target_mourn_inferior (); | |
4348 | } | |
4349 | ||
c906108c | 4350 | static void |
fba45db2 | 4351 | remote_mourn (void) |
c906108c SS |
4352 | { |
4353 | remote_mourn_1 (&remote_ops); | |
4354 | } | |
4355 | ||
53a5351d | 4356 | static void |
fba45db2 | 4357 | remote_async_mourn (void) |
53a5351d JM |
4358 | { |
4359 | remote_mourn_1 (&remote_async_ops); | |
4360 | } | |
4361 | ||
c906108c | 4362 | static void |
fba45db2 | 4363 | extended_remote_mourn (void) |
c906108c SS |
4364 | { |
4365 | /* We do _not_ want to mourn the target like this; this will | |
4366 | remove the extended remote target from the target stack, | |
802188a7 | 4367 | and the next time the user says "run" it'll fail. |
c906108c SS |
4368 | |
4369 | FIXME: What is the right thing to do here? */ | |
4370 | #if 0 | |
4371 | remote_mourn_1 (&extended_remote_ops); | |
4372 | #endif | |
4373 | } | |
4374 | ||
4375 | /* Worker function for remote_mourn. */ | |
4376 | static void | |
fba45db2 | 4377 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4378 | { |
4379 | unpush_target (target); | |
4380 | generic_mourn_inferior (); | |
4381 | } | |
4382 | ||
4383 | /* In the extended protocol we want to be able to do things like | |
4384 | "run" and have them basically work as expected. So we need | |
802188a7 | 4385 | a special create_inferior function. |
c906108c SS |
4386 | |
4387 | FIXME: One day add support for changing the exec file | |
4388 | we're debugging, arguments and an environment. */ | |
4389 | ||
4390 | static void | |
23860348 MS |
4391 | extended_remote_create_inferior (char *exec_file, char *args, |
4392 | char **env, int from_tty) | |
c906108c SS |
4393 | { |
4394 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4395 | the remote server. */ | |
4396 | remove_breakpoints (); | |
4397 | ||
4398 | /* Now restart the remote server. */ | |
4399 | extended_remote_restart (); | |
4400 | ||
4401 | /* Now put the breakpoints back in. This way we're safe if the | |
4402 | restart function works via a unix fork on the remote side. */ | |
4403 | insert_breakpoints (); | |
4404 | ||
4405 | /* Clean up from the last time we were running. */ | |
4406 | clear_proceed_status (); | |
4407 | ||
4408 | /* Let the remote process run. */ | |
4409 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4410 | } | |
4411 | ||
23860348 | 4412 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4413 | static void |
23860348 MS |
4414 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4415 | char **env, int from_tty) | |
43ff13b4 JM |
4416 | { |
4417 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4418 | the remote server. */ | |
4419 | remove_breakpoints (); | |
4420 | ||
4421 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4422 | with the event loop. */ |
362646f5 | 4423 | if (target_can_async_p ()) |
2acceee2 | 4424 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4425 | |
4426 | /* Now restart the remote server. */ | |
4427 | extended_remote_restart (); | |
4428 | ||
4429 | /* Now put the breakpoints back in. This way we're safe if the | |
4430 | restart function works via a unix fork on the remote side. */ | |
4431 | insert_breakpoints (); | |
4432 | ||
4433 | /* Clean up from the last time we were running. */ | |
4434 | clear_proceed_status (); | |
4435 | ||
4436 | /* Let the remote process run. */ | |
4437 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4438 | } | |
c906108c | 4439 | \f |
c5aa993b | 4440 | |
aaab4dba | 4441 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4442 | instruction than other targets; in those use |
4443 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4444 | Also, bi-endian targets may define | |
4445 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4446 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4447 | just call the standard routines that are in mem-break.c. */ | |
4448 | ||
4449 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4450 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4451 | the ARCH-OS-tdep.c code can override the default. */ | |
4452 | ||
4453 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4454 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4455 | #endif |
4456 | ||
7fec2c59 | 4457 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4458 | |
4459 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4460 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4461 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4462 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4463 | #endif |
4464 | ||
7fec2c59 AC |
4465 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4466 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4467 | |
7fec2c59 | 4468 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4469 | |
aaab4dba AC |
4470 | /* Insert a breakpoint on targets that don't have any better |
4471 | breakpoint support. We read the contents of the target location | |
4472 | and stash it, then overwrite it with a breakpoint instruction. | |
4473 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4474 | is a pointer to memory allocated for saving the target contents. | |
4475 | It is guaranteed by the caller to be long enough to save the number | |
4476 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4477 | |
4478 | static int | |
fba45db2 | 4479 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4480 | { |
d01949b6 | 4481 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4482 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4483 | int val; |
802188a7 | 4484 | #endif |
96baa820 JM |
4485 | int bp_size; |
4486 | ||
d471ea57 AC |
4487 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4488 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4489 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4490 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4491 | |
d471ea57 | 4492 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4493 | { |
d01949b6 | 4494 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4495 | char *p = buf; |
802188a7 | 4496 | |
0caabb7e | 4497 | addr = remote_address_masked (addr); |
96baa820 JM |
4498 | *(p++) = 'Z'; |
4499 | *(p++) = '0'; | |
4500 | *(p++) = ','; | |
0caabb7e AC |
4501 | p += hexnumstr (p, (ULONGEST) addr); |
4502 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4503 | sprintf (p, ",%d", bp_size); |
802188a7 | 4504 | |
96baa820 | 4505 | putpkt (buf); |
d01949b6 | 4506 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4507 | |
d471ea57 | 4508 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4509 | { |
d471ea57 AC |
4510 | case PACKET_ERROR: |
4511 | return -1; | |
4512 | case PACKET_OK: | |
4513 | return 0; | |
4514 | case PACKET_UNKNOWN: | |
4515 | break; | |
96baa820 JM |
4516 | } |
4517 | } | |
c906108c | 4518 | |
802188a7 | 4519 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4520 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4521 | ||
4522 | if (val == 0) | |
4523 | { | |
d7449b42 | 4524 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4525 | val = target_write_memory (addr, (char *) big_break_insn, |
4526 | sizeof big_break_insn); | |
4527 | else | |
4528 | val = target_write_memory (addr, (char *) little_break_insn, | |
4529 | sizeof little_break_insn); | |
4530 | } | |
4531 | ||
4532 | return val; | |
4533 | #else | |
4534 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4535 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4536 | } |
4537 | ||
4538 | static int | |
fba45db2 | 4539 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4540 | { |
d01949b6 | 4541 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4542 | int bp_size; |
4543 | ||
d471ea57 | 4544 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4545 | { |
d01949b6 | 4546 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4547 | char *p = buf; |
802188a7 | 4548 | |
96baa820 JM |
4549 | *(p++) = 'z'; |
4550 | *(p++) = '0'; | |
4551 | *(p++) = ','; | |
4552 | ||
0caabb7e AC |
4553 | addr = remote_address_masked (addr); |
4554 | p += hexnumstr (p, (ULONGEST) addr); | |
4555 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4556 | sprintf (p, ",%d", bp_size); |
802188a7 | 4557 | |
96baa820 | 4558 | putpkt (buf); |
d01949b6 | 4559 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4560 | |
4561 | return (buf[0] == 'E'); | |
4562 | } | |
4563 | ||
7fec2c59 | 4564 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4565 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4566 | #else | |
4567 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4568 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4569 | } |
4570 | ||
d471ea57 AC |
4571 | static int |
4572 | watchpoint_to_Z_packet (int type) | |
4573 | { | |
4574 | switch (type) | |
4575 | { | |
4576 | case hw_write: | |
4577 | return 2; | |
4578 | break; | |
4579 | case hw_read: | |
4580 | return 3; | |
4581 | break; | |
4582 | case hw_access: | |
4583 | return 4; | |
4584 | break; | |
4585 | default: | |
8e65ff28 AC |
4586 | internal_error (__FILE__, __LINE__, |
4587 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4588 | } |
4589 | } | |
4590 | ||
3c3bea1c | 4591 | static int |
fba45db2 | 4592 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4593 | { |
d01949b6 AC |
4594 | struct remote_state *rs = get_remote_state (); |
4595 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4596 | char *p; |
d471ea57 | 4597 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4598 | |
d471ea57 AC |
4599 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4600 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4601 | remote_protocol_Z[packet].name, | |
4602 | remote_protocol_Z[packet].title); | |
802188a7 | 4603 | |
d471ea57 | 4604 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4605 | p = strchr (buf, '\0'); |
4606 | addr = remote_address_masked (addr); | |
4607 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4608 | sprintf (p, ",%x", len); |
802188a7 | 4609 | |
96baa820 | 4610 | putpkt (buf); |
d01949b6 | 4611 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4612 | |
d471ea57 AC |
4613 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4614 | { | |
4615 | case PACKET_ERROR: | |
4616 | case PACKET_UNKNOWN: | |
4617 | return -1; | |
4618 | case PACKET_OK: | |
4619 | return 0; | |
4620 | } | |
8e65ff28 AC |
4621 | internal_error (__FILE__, __LINE__, |
4622 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4623 | } |
4624 | ||
d471ea57 | 4625 | |
3c3bea1c | 4626 | static int |
fba45db2 | 4627 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4628 | { |
d01949b6 AC |
4629 | struct remote_state *rs = get_remote_state (); |
4630 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4631 | char *p; |
d471ea57 AC |
4632 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4633 | ||
4634 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4635 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4636 | remote_protocol_Z[packet].name, | |
4637 | remote_protocol_Z[packet].title); | |
802188a7 | 4638 | |
d471ea57 | 4639 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4640 | p = strchr (buf, '\0'); |
4641 | addr = remote_address_masked (addr); | |
4642 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4643 | sprintf (p, ",%x", len); |
96baa820 | 4644 | putpkt (buf); |
d01949b6 | 4645 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4646 | |
d471ea57 AC |
4647 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4648 | { | |
4649 | case PACKET_ERROR: | |
4650 | case PACKET_UNKNOWN: | |
4651 | return -1; | |
4652 | case PACKET_OK: | |
4653 | return 0; | |
4654 | } | |
8e65ff28 AC |
4655 | internal_error (__FILE__, __LINE__, |
4656 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4657 | } |
4658 | ||
3c3bea1c | 4659 | |
501eef12 AC |
4660 | int remote_hw_watchpoint_limit = -1; |
4661 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4662 | |
b9362cc7 | 4663 | static int |
3c3bea1c | 4664 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4665 | { |
3c3bea1c GS |
4666 | if (type == bp_hardware_breakpoint) |
4667 | { | |
4668 | if (remote_hw_breakpoint_limit == 0) | |
4669 | return 0; | |
501eef12 AC |
4670 | else if (remote_hw_breakpoint_limit < 0) |
4671 | return 1; | |
3c3bea1c GS |
4672 | else if (cnt <= remote_hw_breakpoint_limit) |
4673 | return 1; | |
4674 | } | |
4675 | else | |
4676 | { | |
4677 | if (remote_hw_watchpoint_limit == 0) | |
4678 | return 0; | |
501eef12 AC |
4679 | else if (remote_hw_watchpoint_limit < 0) |
4680 | return 1; | |
3c3bea1c GS |
4681 | else if (ot) |
4682 | return -1; | |
4683 | else if (cnt <= remote_hw_watchpoint_limit) | |
4684 | return 1; | |
4685 | } | |
4686 | return -1; | |
4687 | } | |
4688 | ||
b9362cc7 | 4689 | static int |
3c3bea1c GS |
4690 | remote_stopped_by_watchpoint (void) |
4691 | { | |
4692 | return remote_stopped_by_watchpoint_p; | |
4693 | } | |
4694 | ||
7270d8f2 OF |
4695 | extern int stepped_after_stopped_by_watchpoint; |
4696 | ||
4aa7a7f5 JJ |
4697 | static int |
4698 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4699 | { |
4aa7a7f5 | 4700 | int rc = 0; |
7270d8f2 OF |
4701 | if (remote_stopped_by_watchpoint () |
4702 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4703 | { |
4704 | *addr_p = remote_watch_data_address; | |
4705 | rc = 1; | |
4706 | } | |
4707 | ||
4708 | return rc; | |
3c3bea1c GS |
4709 | } |
4710 | ||
4711 | ||
4712 | static int | |
4713 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4714 | { | |
4715 | int len = 0; | |
d01949b6 AC |
4716 | struct remote_state *rs = get_remote_state (); |
4717 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4718 | char *p = buf; |
802188a7 | 4719 | |
c8189ed1 GS |
4720 | /* The length field should be set to the size of a breakpoint |
4721 | instruction. */ | |
4722 | ||
802188a7 | 4723 | BREAKPOINT_FROM_PC (&addr, &len); |
3c3bea1c | 4724 | |
d471ea57 AC |
4725 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4726 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4727 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4728 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4729 | |
96baa820 JM |
4730 | *(p++) = 'Z'; |
4731 | *(p++) = '1'; | |
4732 | *(p++) = ','; | |
802188a7 | 4733 | |
96baa820 JM |
4734 | addr = remote_address_masked (addr); |
4735 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4736 | sprintf (p, ",%x", len); |
96baa820 JM |
4737 | |
4738 | putpkt (buf); | |
d01949b6 | 4739 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4740 | |
d471ea57 AC |
4741 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4742 | { | |
4743 | case PACKET_ERROR: | |
4744 | case PACKET_UNKNOWN: | |
4745 | return -1; | |
4746 | case PACKET_OK: | |
4747 | return 0; | |
4748 | } | |
8e65ff28 | 4749 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4750 | "remote_insert_hw_breakpoint: reached end of function"); |
96baa820 JM |
4751 | } |
4752 | ||
d471ea57 | 4753 | |
802188a7 | 4754 | static int |
3c3bea1c | 4755 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) |
96baa820 | 4756 | { |
3c3bea1c | 4757 | int len; |
d01949b6 AC |
4758 | struct remote_state *rs = get_remote_state (); |
4759 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4760 | char *p = buf; |
c8189ed1 GS |
4761 | |
4762 | /* The length field should be set to the size of a breakpoint | |
4763 | instruction. */ | |
4764 | ||
4765 | BREAKPOINT_FROM_PC (&addr, &len); | |
4766 | ||
d471ea57 AC |
4767 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4768 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4769 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4770 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
802188a7 | 4771 | |
96baa820 JM |
4772 | *(p++) = 'z'; |
4773 | *(p++) = '1'; | |
4774 | *(p++) = ','; | |
802188a7 | 4775 | |
96baa820 JM |
4776 | addr = remote_address_masked (addr); |
4777 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4778 | sprintf (p, ",%x", len); |
96baa820 JM |
4779 | |
4780 | putpkt(buf); | |
d01949b6 | 4781 | getpkt (buf, (rs->remote_packet_size), 0); |
802188a7 | 4782 | |
d471ea57 AC |
4783 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4784 | { | |
4785 | case PACKET_ERROR: | |
4786 | case PACKET_UNKNOWN: | |
4787 | return -1; | |
4788 | case PACKET_OK: | |
4789 | return 0; | |
4790 | } | |
8e65ff28 | 4791 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4792 | "remote_remove_hw_breakpoint: reached end of function"); |
96baa820 | 4793 | } |
96baa820 | 4794 | |
c906108c SS |
4795 | /* Some targets are only capable of doing downloads, and afterwards |
4796 | they switch to the remote serial protocol. This function provides | |
4797 | a clean way to get from the download target to the remote target. | |
4798 | It's basically just a wrapper so that we don't have to expose any | |
4799 | of the internal workings of remote.c. | |
4800 | ||
4801 | Prior to calling this routine, you should shutdown the current | |
4802 | target code, else you will get the "A program is being debugged | |
4803 | already..." message. Usually a call to pop_target() suffices. */ | |
4804 | ||
4805 | void | |
fba45db2 | 4806 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4807 | { |
4808 | printf_filtered ("Switching to remote protocol\n"); | |
4809 | remote_open (name, from_tty); | |
4810 | } | |
4811 | ||
23860348 | 4812 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 4813 | |
c5aa993b JM |
4814 | static unsigned long crc32_table[256] = |
4815 | {0, 0}; | |
c906108c SS |
4816 | |
4817 | static unsigned long | |
fba45db2 | 4818 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4819 | { |
c5aa993b | 4820 | if (!crc32_table[1]) |
c906108c | 4821 | { |
23860348 | 4822 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
4823 | int i, j; |
4824 | unsigned int c; | |
4825 | ||
4826 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4827 | { |
4828 | for (c = i << 24, j = 8; j > 0; --j) | |
4829 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4830 | crc32_table[i] = c; | |
4831 | } | |
c906108c SS |
4832 | } |
4833 | ||
4834 | while (len--) | |
4835 | { | |
4836 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4837 | buf++; | |
4838 | } | |
4839 | return crc; | |
4840 | } | |
4841 | ||
4842 | /* compare-sections command | |
4843 | ||
4844 | With no arguments, compares each loadable section in the exec bfd | |
4845 | with the same memory range on the target, and reports mismatches. | |
4846 | Useful for verifying the image on the target against the exec file. | |
4847 | Depends on the target understanding the new "qCRC:" request. */ | |
4848 | ||
e514a9d6 JM |
4849 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4850 | target method (target verify memory) and generic version of the | |
4851 | actual command. This will allow other high-level code (especially | |
23860348 | 4852 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 4853 | |
c906108c | 4854 | static void |
fba45db2 | 4855 | compare_sections_command (char *args, int from_tty) |
c906108c | 4856 | { |
d01949b6 | 4857 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4858 | asection *s; |
4859 | unsigned long host_crc, target_crc; | |
4860 | extern bfd *exec_bfd; | |
4861 | struct cleanup *old_chain; | |
085dd6e6 JM |
4862 | char *tmp; |
4863 | char *sectdata; | |
ce359b09 | 4864 | const char *sectname; |
d01949b6 | 4865 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4866 | bfd_size_type size; |
4867 | bfd_vma lma; | |
4868 | int matched = 0; | |
4869 | int mismatched = 0; | |
4870 | ||
4871 | if (!exec_bfd) | |
4872 | error ("command cannot be used without an exec file"); | |
4873 | if (!current_target.to_shortname || | |
4874 | strcmp (current_target.to_shortname, "remote") != 0) | |
4875 | error ("command can only be used with remote target"); | |
4876 | ||
c5aa993b | 4877 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4878 | { |
4879 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4880 | continue; /* skip non-loadable section */ |
c906108c | 4881 | |
2c500098 | 4882 | size = bfd_get_section_size (s); |
c906108c | 4883 | if (size == 0) |
c5aa993b | 4884 | continue; /* skip zero-length section */ |
c906108c | 4885 | |
ce359b09 | 4886 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4887 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4888 | continue; /* not the section selected by user */ |
c906108c | 4889 | |
c5aa993b | 4890 | matched = 1; /* do this section */ |
c906108c | 4891 | lma = s->lma; |
23860348 | 4892 | /* FIXME: assumes lma can fit into long. */ |
c906108c SS |
4893 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); |
4894 | putpkt (buf); | |
4895 | ||
23860348 MS |
4896 | /* Be clever; compute the host_crc before waiting for target |
4897 | reply. */ | |
c906108c | 4898 | sectdata = xmalloc (size); |
b8c9b27d | 4899 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4900 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4901 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4902 | ||
d01949b6 | 4903 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 4904 | if (buf[0] == 'E') |
823ca731 AC |
4905 | error ("target memory fault, section %s, range 0x%s -- 0x%s", |
4906 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4907 | if (buf[0] != 'C') |
4908 | error ("remote target does not support this operation"); | |
4909 | ||
4910 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4911 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4912 | ||
d4f3574e SS |
4913 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4914 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4915 | if (host_crc == target_crc) |
4916 | printf_filtered ("matched.\n"); | |
4917 | else | |
c5aa993b JM |
4918 | { |
4919 | printf_filtered ("MIS-MATCHED!\n"); | |
4920 | mismatched++; | |
4921 | } | |
c906108c SS |
4922 | |
4923 | do_cleanups (old_chain); | |
4924 | } | |
4925 | if (mismatched > 0) | |
4926 | warning ("One or more sections of the remote executable does not match\n\ | |
4927 | the loaded file\n"); | |
4928 | if (args && !matched) | |
4929 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4930 | } | |
4931 | ||
1e3ff5ad | 4932 | static LONGEST |
4b8a223f | 4933 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
8aa91c1e | 4934 | const char *annex, void *readbuf, const void *writebuf, |
1e3ff5ad | 4935 | ULONGEST offset, LONGEST len) |
c906108c | 4936 | { |
d01949b6 | 4937 | struct remote_state *rs = get_remote_state (); |
c906108c | 4938 | int i; |
d01949b6 | 4939 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 4940 | char *p2 = &buf2[0]; |
1e3ff5ad | 4941 | char query_type; |
c906108c | 4942 | |
21e3b9b9 DJ |
4943 | /* Handle memory using remote_xfer_memory. */ |
4944 | if (object == TARGET_OBJECT_MEMORY) | |
4945 | { | |
4946 | int xfered; | |
4947 | errno = 0; | |
4948 | ||
4949 | if (writebuf != NULL) | |
4950 | { | |
4951 | void *buffer = xmalloc (len); | |
4952 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4953 | memcpy (buffer, writebuf, len); | |
4954 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4955 | do_cleanups (cleanup); | |
4956 | } | |
4957 | else | |
4958 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4959 | ||
4960 | if (xfered > 0) | |
4961 | return xfered; | |
4962 | else if (xfered == 0 && errno == 0) | |
4963 | return 0; | |
4964 | else | |
4965 | return -1; | |
4966 | } | |
4967 | ||
4b8a223f AC |
4968 | /* Only handle reads. */ |
4969 | if (writebuf != NULL || readbuf == NULL) | |
4970 | return -1; | |
4971 | ||
1e3ff5ad AC |
4972 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4973 | objects!!! Instead specify new query packets. */ | |
4974 | switch (object) | |
c906108c | 4975 | { |
1e3ff5ad AC |
4976 | case TARGET_OBJECT_KOD: |
4977 | query_type = 'K'; | |
4978 | break; | |
4979 | case TARGET_OBJECT_AVR: | |
4980 | query_type = 'R'; | |
4981 | break; | |
802188a7 RM |
4982 | |
4983 | case TARGET_OBJECT_AUXV: | |
4984 | if (remote_protocol_qPart_auxv.support != PACKET_DISABLE) | |
4985 | { | |
4986 | unsigned int total = 0; | |
4987 | while (len > 0) | |
4988 | { | |
4989 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
4990 | snprintf (buf2, rs->remote_packet_size, | |
4991 | "qPart:auxv:read::%s,%s", | |
4992 | phex_nz (offset, sizeof offset), | |
4993 | phex_nz (n, sizeof n)); | |
4994 | i = putpkt (buf2); | |
4995 | if (i < 0) | |
4996 | return total > 0 ? total : i; | |
4997 | buf2[0] = '\0'; | |
4998 | getpkt (buf2, rs->remote_packet_size, 0); | |
4999 | if (packet_ok (buf2, &remote_protocol_qPart_auxv) != PACKET_OK) | |
5000 | return total > 0 ? total : -1; | |
5001 | if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0') | |
5002 | break; /* Got EOF indicator. */ | |
5003 | /* Got some data. */ | |
5004 | i = hex2bin (buf2, readbuf, len); | |
5005 | if (i > 0) | |
5006 | { | |
5007 | readbuf = (void *) ((char *) readbuf + i); | |
5008 | offset += i; | |
5009 | len -= i; | |
5010 | total += i; | |
5011 | } | |
5012 | } | |
5013 | return total; | |
5014 | } | |
5015 | return -1; | |
5016 | ||
1e3ff5ad | 5017 | default: |
c906108c SS |
5018 | return -1; |
5019 | } | |
5020 | ||
4b8a223f | 5021 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5022 | buffer size. */ |
4b8a223f | 5023 | if (offset == 0 && len == 0) |
1e3ff5ad AC |
5024 | return (rs->remote_packet_size); |
5025 | /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is | |
5026 | not large enough let the caller. */ | |
5027 | if (len < (rs->remote_packet_size)) | |
5028 | return -1; | |
5029 | len = rs->remote_packet_size; | |
5030 | ||
23860348 | 5031 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5032 | if (!remote_desc) |
c906108c SS |
5033 | error ("remote query is only available after target open"); |
5034 | ||
1e3ff5ad | 5035 | gdb_assert (annex != NULL); |
4b8a223f | 5036 | gdb_assert (readbuf != NULL); |
c906108c SS |
5037 | |
5038 | *p2++ = 'q'; | |
5039 | *p2++ = query_type; | |
5040 | ||
23860348 MS |
5041 | /* We used one buffer char for the remote protocol q command and |
5042 | another for the query type. As the remote protocol encapsulation | |
5043 | uses 4 chars plus one extra in case we are debugging | |
5044 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5045 | string. */ | |
c906108c | 5046 | i = 0; |
1e3ff5ad | 5047 | while (annex[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c | 5048 | { |
1e3ff5ad AC |
5049 | /* Bad caller may have sent forbidden characters. */ |
5050 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5051 | *p2++ = annex[i]; | |
c906108c SS |
5052 | i++; |
5053 | } | |
1e3ff5ad AC |
5054 | *p2 = '\0'; |
5055 | gdb_assert (annex[i] == '\0'); | |
c906108c SS |
5056 | |
5057 | i = putpkt (buf2); | |
c5aa993b JM |
5058 | if (i < 0) |
5059 | return i; | |
c906108c | 5060 | |
4b8a223f | 5061 | getpkt (readbuf, len, 0); |
c906108c | 5062 | |
4b8a223f | 5063 | return strlen (readbuf); |
c906108c SS |
5064 | } |
5065 | ||
96baa820 JM |
5066 | static void |
5067 | remote_rcmd (char *command, | |
d9fcf2fb | 5068 | struct ui_file *outbuf) |
96baa820 | 5069 | { |
d01949b6 | 5070 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5071 | int i; |
d01949b6 | 5072 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5073 | char *p = buf; |
5074 | ||
5075 | if (!remote_desc) | |
5076 | error ("remote rcmd is only available after target open"); | |
5077 | ||
23860348 | 5078 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5079 | if (command == NULL) |
5080 | command = ""; | |
5081 | ||
23860348 | 5082 | /* The query prefix. */ |
96baa820 JM |
5083 | strcpy (buf, "qRcmd,"); |
5084 | p = strchr (buf, '\0'); | |
5085 | ||
d01949b6 | 5086 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5087 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5088 | ||
23860348 | 5089 | /* Encode the actual command. */ |
30559e10 | 5090 | bin2hex (command, p, 0); |
96baa820 JM |
5091 | |
5092 | if (putpkt (buf) < 0) | |
5093 | error ("Communication problem with target\n"); | |
5094 | ||
5095 | /* get/display the response */ | |
5096 | while (1) | |
5097 | { | |
23860348 | 5098 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
96baa820 | 5099 | buf[0] = '\0'; |
d01949b6 | 5100 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5101 | if (buf[0] == '\0') |
5102 | error ("Target does not support this command\n"); | |
5103 | if (buf[0] == 'O' && buf[1] != 'K') | |
5104 | { | |
23860348 | 5105 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5106 | continue; |
5107 | } | |
5108 | if (strcmp (buf, "OK") == 0) | |
5109 | break; | |
7be570e7 JM |
5110 | if (strlen (buf) == 3 && buf[0] == 'E' |
5111 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5112 | { | |
5113 | error ("Protocol error with Rcmd"); | |
5114 | } | |
96baa820 JM |
5115 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5116 | { | |
5117 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5118 | fputc_unfiltered (c, outbuf); | |
5119 | } | |
5120 | break; | |
5121 | } | |
5122 | } | |
5123 | ||
c906108c | 5124 | static void |
fba45db2 | 5125 | packet_command (char *args, int from_tty) |
c906108c | 5126 | { |
d01949b6 AC |
5127 | struct remote_state *rs = get_remote_state (); |
5128 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5129 | |
c5aa993b | 5130 | if (!remote_desc) |
c906108c SS |
5131 | error ("command can only be used with remote target"); |
5132 | ||
c5aa993b | 5133 | if (!args) |
c906108c SS |
5134 | error ("remote-packet command requires packet text as argument"); |
5135 | ||
5136 | puts_filtered ("sending: "); | |
5137 | print_packet (args); | |
5138 | puts_filtered ("\n"); | |
5139 | putpkt (args); | |
5140 | ||
d01949b6 | 5141 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5142 | puts_filtered ("received: "); |
5143 | print_packet (buf); | |
5144 | puts_filtered ("\n"); | |
5145 | } | |
5146 | ||
5147 | #if 0 | |
23860348 | 5148 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5149 | |
a14ed312 | 5150 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5151 | |
a14ed312 | 5152 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5153 | |
a14ed312 | 5154 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5155 | |
a14ed312 | 5156 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5157 | |
23860348 | 5158 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5159 | |
a14ed312 | 5160 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5161 | |
23860348 | 5162 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5163 | |
a14ed312 | 5164 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5165 | |
a14ed312 | 5166 | static void init_remote_threadtests (void); |
c906108c | 5167 | |
23860348 | 5168 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5169 | |
5170 | static void | |
fba45db2 | 5171 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5172 | { |
5173 | int sample_thread = SAMPLE_THREAD; | |
5174 | ||
5175 | printf_filtered ("Remote threadset test\n"); | |
5176 | set_thread (sample_thread, 1); | |
5177 | } | |
5178 | ||
5179 | ||
5180 | static void | |
fba45db2 | 5181 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5182 | { |
5183 | int sample_thread = SAMPLE_THREAD; | |
5184 | ||
39f77062 | 5185 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5186 | printf_filtered ("PASS: Thread alive test\n"); |
5187 | else | |
5188 | printf_filtered ("FAIL: Thread alive test\n"); | |
5189 | } | |
5190 | ||
23860348 | 5191 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5192 | |
5193 | void | |
fba45db2 | 5194 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5195 | { |
5196 | char hexid[20]; | |
5197 | ||
23860348 | 5198 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5199 | hexid[16] = 0; |
5200 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5201 | } | |
5202 | ||
5203 | static void | |
fba45db2 | 5204 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5205 | { |
5206 | int startflag = 1; | |
5207 | threadref nextthread; | |
5208 | int done, result_count; | |
5209 | threadref threadlist[3]; | |
5210 | ||
5211 | printf_filtered ("Remote Threadlist test\n"); | |
5212 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5213 | &result_count, &threadlist[0])) | |
5214 | printf_filtered ("FAIL: threadlist test\n"); | |
5215 | else | |
5216 | { | |
5217 | threadref *scan = threadlist; | |
5218 | threadref *limit = scan + result_count; | |
5219 | ||
5220 | while (scan < limit) | |
5221 | output_threadid (" thread ", scan++); | |
5222 | } | |
5223 | } | |
5224 | ||
5225 | void | |
fba45db2 | 5226 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5227 | { |
5228 | output_threadid ("Threadid: ", &info->threadid); | |
5229 | printf_filtered ("Name: %s\n ", info->shortname); | |
5230 | printf_filtered ("State: %s\n", info->display); | |
5231 | printf_filtered ("other: %s\n\n", info->more_display); | |
5232 | } | |
5233 | ||
5234 | int | |
fba45db2 | 5235 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5236 | { |
5237 | int result; | |
5238 | int set; | |
5239 | struct gdb_ext_thread_info threadinfo; | |
5240 | ||
5241 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5242 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5243 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5244 | display_thread_info (&threadinfo); | |
5245 | return result; | |
5246 | } | |
5247 | ||
5248 | static void | |
fba45db2 | 5249 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5250 | { |
5251 | int athread = SAMPLE_THREAD; | |
5252 | threadref thread; | |
5253 | int set; | |
5254 | ||
5255 | int_to_threadref (&thread, athread); | |
5256 | printf_filtered ("Remote Threadinfo test\n"); | |
5257 | if (!get_and_display_threadinfo (&thread)) | |
5258 | printf_filtered ("FAIL cannot get thread info\n"); | |
5259 | } | |
5260 | ||
5261 | static int | |
fba45db2 | 5262 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5263 | { |
5264 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5265 | return get_and_display_threadinfo (ref); | |
5266 | } | |
5267 | ||
5268 | static void | |
fba45db2 | 5269 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5270 | { |
5271 | printf_filtered ("Remote Threadlist update test\n"); | |
5272 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5273 | } | |
5274 | ||
5275 | static void | |
5276 | init_remote_threadtests (void) | |
5277 | { | |
5278 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5279 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5280 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5281 | "Fetch and display info about one thread"); | |
5282 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5283 | "Test setting to a different thread"); | |
5284 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5285 | "Iterate through updating all remote thread info"); | |
5286 | add_com ("talive", class_obscure, threadalive_test, | |
5287 | " Remote thread alive test "); | |
5288 | } | |
5289 | ||
5290 | #endif /* 0 */ | |
5291 | ||
f3fb8c85 MS |
5292 | /* Convert a thread ID to a string. Returns the string in a static |
5293 | buffer. */ | |
5294 | ||
5295 | static char * | |
39f77062 | 5296 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5297 | { |
5298 | static char buf[30]; | |
5299 | ||
39f77062 | 5300 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5301 | return buf; |
5302 | } | |
5303 | ||
c906108c | 5304 | static void |
fba45db2 | 5305 | init_remote_ops (void) |
c906108c | 5306 | { |
c5aa993b | 5307 | remote_ops.to_shortname = "remote"; |
c906108c | 5308 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5309 | remote_ops.to_doc = |
c906108c | 5310 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5311 | Specify the serial device it is connected to\n\ |
5312 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5313 | remote_ops.to_open = remote_open; |
5314 | remote_ops.to_close = remote_close; | |
c906108c | 5315 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5316 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5317 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5318 | remote_ops.to_wait = remote_wait; |
5319 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5320 | remote_ops.to_store_registers = remote_store_registers; | |
5321 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5322 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5323 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5324 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5325 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5326 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5327 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5328 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5329 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5330 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5331 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5332 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5333 | remote_ops.to_kill = remote_kill; |
5334 | remote_ops.to_load = generic_load; | |
c906108c SS |
5335 | remote_ops.to_mourn_inferior = remote_mourn; |
5336 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5337 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5338 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5339 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5340 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5341 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5342 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5343 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5344 | remote_ops.to_has_all_memory = 1; |
5345 | remote_ops.to_has_memory = 1; | |
5346 | remote_ops.to_has_stack = 1; | |
5347 | remote_ops.to_has_registers = 1; | |
5348 | remote_ops.to_has_execution = 1; | |
5349 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5350 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5351 | } |
5352 | ||
5353 | /* Set up the extended remote vector by making a copy of the standard | |
5354 | remote vector and adding to it. */ | |
5355 | ||
5356 | static void | |
fba45db2 | 5357 | init_extended_remote_ops (void) |
c906108c SS |
5358 | { |
5359 | extended_remote_ops = remote_ops; | |
5360 | ||
0f71a2f6 | 5361 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5362 | extended_remote_ops.to_longname = |
c906108c | 5363 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5364 | extended_remote_ops.to_doc = |
c906108c SS |
5365 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5366 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5367 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5368 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5369 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5370 | } |
5371 | ||
6426a772 JM |
5372 | static int |
5373 | remote_can_async_p (void) | |
5374 | { | |
23860348 | 5375 | /* We're async whenever the serial device is. */ |
2cd58942 | 5376 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5377 | } |
5378 | ||
5379 | static int | |
5380 | remote_is_async_p (void) | |
5381 | { | |
23860348 | 5382 | /* We're async whenever the serial device is. */ |
2cd58942 | 5383 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5384 | } |
5385 | ||
2acceee2 JM |
5386 | /* Pass the SERIAL event on and up to the client. One day this code |
5387 | will be able to delay notifying the client of an event until the | |
23860348 | 5388 | point where an entire packet has been received. */ |
2acceee2 | 5389 | |
23860348 MS |
5390 | static void (*async_client_callback) (enum inferior_event_type event_type, |
5391 | void *context); | |
2acceee2 JM |
5392 | static void *async_client_context; |
5393 | static serial_event_ftype remote_async_serial_handler; | |
5394 | ||
6426a772 | 5395 | static void |
819cc324 | 5396 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5397 | { |
2acceee2 JM |
5398 | /* Don't propogate error information up to the client. Instead let |
5399 | the client find out about the error by querying the target. */ | |
5400 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5401 | } | |
5402 | ||
5403 | static void | |
23860348 MS |
5404 | remote_async (void (*callback) (enum inferior_event_type event_type, |
5405 | void *context), void *context) | |
2acceee2 | 5406 | { |
ed9a39eb | 5407 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5408 | internal_error (__FILE__, __LINE__, |
5409 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5410 | |
2acceee2 JM |
5411 | if (callback != NULL) |
5412 | { | |
2cd58942 | 5413 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5414 | async_client_callback = callback; |
5415 | async_client_context = context; | |
5416 | } | |
5417 | else | |
2cd58942 | 5418 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5419 | } |
5420 | ||
43ff13b4 JM |
5421 | /* Target async and target extended-async. |
5422 | ||
5423 | This are temporary targets, until it is all tested. Eventually | |
5424 | async support will be incorporated int the usual 'remote' | |
23860348 | 5425 | target. */ |
43ff13b4 JM |
5426 | |
5427 | static void | |
c2d11a7d | 5428 | init_remote_async_ops (void) |
43ff13b4 JM |
5429 | { |
5430 | remote_async_ops.to_shortname = "async"; | |
23860348 MS |
5431 | remote_async_ops.to_longname = |
5432 | "Remote serial target in async version of the gdb-specific protocol"; | |
c5aa993b | 5433 | remote_async_ops.to_doc = |
43ff13b4 JM |
5434 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5435 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5436 | remote_async_ops.to_open = remote_async_open; |
5437 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5438 | remote_async_ops.to_detach = remote_detach; |
5439 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5440 | remote_async_ops.to_resume = remote_async_resume; |
5441 | remote_async_ops.to_wait = remote_async_wait; | |
5442 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5443 | remote_async_ops.to_store_registers = remote_store_registers; | |
5444 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5445 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5446 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5447 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5448 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5449 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5450 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5451 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5452 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5453 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5454 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5455 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5456 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5457 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5458 | remote_async_ops.to_kill = remote_async_kill; |
5459 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5460 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5461 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5462 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5463 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5464 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5465 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5466 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5467 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5468 | remote_async_ops.to_stratum = process_stratum; |
5469 | remote_async_ops.to_has_all_memory = 1; | |
5470 | remote_async_ops.to_has_memory = 1; | |
5471 | remote_async_ops.to_has_stack = 1; | |
5472 | remote_async_ops.to_has_registers = 1; | |
5473 | remote_async_ops.to_has_execution = 1; | |
5474 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5475 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5476 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5477 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5478 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5479 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5480 | } |
5481 | ||
5482 | /* Set up the async extended remote vector by making a copy of the standard | |
5483 | remote vector and adding to it. */ | |
5484 | ||
5485 | static void | |
c2d11a7d | 5486 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5487 | { |
5488 | extended_async_remote_ops = remote_async_ops; | |
5489 | ||
5490 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5491 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5492 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5493 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5494 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5495 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5496 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5497 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5498 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5499 | } | |
5500 | ||
5a2468f5 | 5501 | static void |
c2d11a7d | 5502 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5503 | { |
5a2468f5 JM |
5504 | } |
5505 | ||
d471ea57 AC |
5506 | static void |
5507 | show_remote_cmd (char *args, int from_tty) | |
5508 | { | |
e9e68a56 AC |
5509 | /* FIXME: cagney/2002-06-15: This function should iterate over |
5510 | remote_show_cmdlist for a list of sub commands to show. */ | |
5511 | show_remote_protocol_Z_packet_cmd (args, from_tty, NULL); | |
e9e68a56 | 5512 | show_remote_protocol_P_packet_cmd (args, from_tty, NULL); |
b96ec7ac | 5513 | show_remote_protocol_p_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 5514 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL); |
506fb367 | 5515 | show_remote_protocol_vcont_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 5516 | show_remote_protocol_binary_download_cmd (args, from_tty, NULL); |
802188a7 | 5517 | show_remote_protocol_qPart_auxv_packet_cmd (args, from_tty, NULL); |
d471ea57 | 5518 | } |
5a2468f5 | 5519 | |
0f71a2f6 | 5520 | static void |
fba45db2 | 5521 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5522 | { |
d696208f | 5523 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5524 | } |
5525 | ||
23860348 | 5526 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
5527 | static void (*remote_new_objfile_chain) (struct objfile *); |
5528 | ||
23860348 | 5529 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
5530 | static void |
5531 | remote_new_objfile (struct objfile *objfile) | |
5532 | { | |
23860348 | 5533 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
5534 | { |
5535 | remote_check_symbols (objfile); | |
5536 | } | |
23860348 | 5537 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
5538 | if (remote_new_objfile_chain != 0 && |
5539 | remote_desc == 0) | |
5540 | remote_new_objfile_chain (objfile); | |
5541 | } | |
5542 | ||
c906108c | 5543 | void |
fba45db2 | 5544 | _initialize_remote (void) |
c906108c | 5545 | { |
5a2468f5 JM |
5546 | static struct cmd_list_element *remote_set_cmdlist; |
5547 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5548 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5549 | |
0f71a2f6 | 5550 | /* architecture specific data */ |
23860348 MS |
5551 | remote_gdbarch_data_handle = |
5552 | gdbarch_data_register_post_init (init_remote_state); | |
d01949b6 AC |
5553 | |
5554 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5555 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5556 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5557 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5558 | |
c906108c SS |
5559 | init_remote_ops (); |
5560 | add_target (&remote_ops); | |
5561 | ||
5562 | init_extended_remote_ops (); | |
5563 | add_target (&extended_remote_ops); | |
cce74817 | 5564 | |
43ff13b4 JM |
5565 | init_remote_async_ops (); |
5566 | add_target (&remote_async_ops); | |
5567 | ||
5568 | init_extended_async_remote_ops (); | |
5569 | add_target (&extended_async_remote_ops); | |
5570 | ||
dc8acb97 | 5571 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5572 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5573 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5574 | |
c906108c SS |
5575 | #if 0 |
5576 | init_remote_threadtests (); | |
5577 | #endif | |
5578 | ||
23860348 | 5579 | /* set/show remote ... */ |
d471ea57 | 5580 | |
5a2468f5 JM |
5581 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5582 | Remote protocol specific variables\n\ | |
5583 | Configure various remote-protocol specific variables such as\n\ | |
5584 | the packets being used", | |
cff3e48b | 5585 | &remote_set_cmdlist, "set remote ", |
23860348 | 5586 | 0 /* allow-unknown */, &setlist); |
d471ea57 | 5587 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5588 | Remote protocol specific variables\n\ |
5589 | Configure various remote-protocol specific variables such as\n\ | |
5590 | the packets being used", | |
cff3e48b | 5591 | &remote_show_cmdlist, "show remote ", |
23860348 | 5592 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 5593 | |
c5aa993b | 5594 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5595 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5596 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5597 | &cmdlist); |
5598 | ||
5599 | add_cmd ("packet", class_maintenance, packet_command, | |
5600 | "Send an arbitrary packet to a remote target.\n\ | |
5601 | maintenance packet TEXT\n\ | |
5602 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5603 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5604 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5605 | terminating `#' character and checksum.", | |
5606 | &maintenancelist); | |
5607 | ||
3b64bf98 AC |
5608 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, "\ |
5609 | Set whether to send break if interrupted.", "\ | |
5610 | Show whether to send break if interrupted.", "\ | |
5611 | If set, a break, instead of a cntrl-c, is sent to the remote target.", "\ | |
5612 | Whether to send break if interrupted is %s.", | |
e707bbc2 AC |
5613 | NULL, NULL, |
5614 | &setlist, &showlist); | |
c906108c | 5615 | |
23860348 | 5616 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 JM |
5617 | |
5618 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5619 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5620 | &setlist); | |
4ad5b0f7 | 5621 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5622 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5623 | &showlist); | |
5624 | add_cmd ("memory-write-packet-size", no_class, | |
5625 | set_memory_write_packet_size, | |
5626 | "Set the maximum number of bytes per memory-write packet.\n" | |
5627 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5628 | "default packet size. The actual limit is further reduced\n" | |
5629 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5630 | "further restriction and ``limit'' to enable that restriction\n", | |
5631 | &remote_set_cmdlist); | |
5632 | add_cmd ("memory-read-packet-size", no_class, | |
5633 | set_memory_read_packet_size, | |
5634 | "Set the maximum number of bytes per memory-read packet.\n" | |
5635 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5636 | "default packet size. The actual limit is further reduced\n" | |
5637 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5638 | "further restriction and ``limit'' to enable that restriction\n", | |
5639 | &remote_set_cmdlist); | |
5640 | add_cmd ("memory-write-packet-size", no_class, | |
5641 | show_memory_write_packet_size, | |
5642 | "Show the maximum number of bytes per memory-write packet.\n", | |
5643 | &remote_show_cmdlist); | |
5644 | add_cmd ("memory-read-packet-size", no_class, | |
5645 | show_memory_read_packet_size, | |
5646 | "Show the maximum number of bytes per memory-read packet.\n", | |
5647 | &remote_show_cmdlist); | |
c906108c | 5648 | |
b3f42336 AC |
5649 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
5650 | &remote_hw_watchpoint_limit, "\ | |
3b64bf98 AC |
5651 | Set the maximum number of target hardware watchpoints.", "\ |
5652 | Show the maximum number of target hardware watchpoints.", "\ | |
501eef12 | 5653 | Specify a negative limit for unlimited.", "\ |
3b64bf98 | 5654 | The maximum number of target hardware watchpoints is %s.", |
b3f42336 AC |
5655 | NULL, NULL, |
5656 | &remote_set_cmdlist, &remote_show_cmdlist); | |
5657 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
5658 | &remote_hw_breakpoint_limit, "\ | |
3b64bf98 AC |
5659 | Set the maximum number of target hardware breakpoints.", "\ |
5660 | Show the maximum number of target hardware breakpoints.", "\ | |
501eef12 | 5661 | Specify a negative limit for unlimited.", "\ |
3b64bf98 | 5662 | The maximum number of target hardware breakpoints is %s.", |
b3f42336 AC |
5663 | NULL, NULL, |
5664 | &remote_set_cmdlist, &remote_show_cmdlist); | |
501eef12 | 5665 | |
cb1a6d5f | 5666 | deprecated_add_show_from_set |
c906108c | 5667 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5668 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5669 | "Set the maximum size of the address (in bits) \ |
5670 | in a memory packet.\n", | |
5671 | &setlist), | |
c5aa993b | 5672 | &showlist); |
c906108c | 5673 | |
96baa820 JM |
5674 | add_packet_config_cmd (&remote_protocol_binary_download, |
5675 | "X", "binary-download", | |
5676 | set_remote_protocol_binary_download_cmd, | |
5677 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5678 | &remote_set_cmdlist, &remote_show_cmdlist, |
5679 | 1); | |
96baa820 JM |
5680 | #if 0 |
5681 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
23860348 | 5682 | compatibility. */ |
cb1a6d5f | 5683 | deprecated_add_show_from_set |
b83266a0 SS |
5684 | (add_set_cmd ("remotebinarydownload", no_class, |
5685 | var_boolean, (char *) &remote_binary_download, | |
5686 | "Set binary downloads.\n", &setlist), | |
5687 | &showlist); | |
96baa820 | 5688 | #endif |
0f71a2f6 | 5689 | |
506fb367 DJ |
5690 | add_packet_config_cmd (&remote_protocol_vcont, |
5691 | "vCont", "verbose-resume", | |
5692 | set_remote_protocol_vcont_packet_cmd, | |
5693 | show_remote_protocol_vcont_packet_cmd, | |
5694 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5695 | 0); | |
5696 | ||
dc8acb97 MS |
5697 | add_packet_config_cmd (&remote_protocol_qSymbol, |
5698 | "qSymbol", "symbol-lookup", | |
5699 | set_remote_protocol_qSymbol_packet_cmd, | |
5700 | show_remote_protocol_qSymbol_packet_cmd, | |
5701 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5702 | 0); | |
5703 | ||
d471ea57 AC |
5704 | add_packet_config_cmd (&remote_protocol_P, |
5705 | "P", "set-register", | |
5a2468f5 JM |
5706 | set_remote_protocol_P_packet_cmd, |
5707 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5708 | &remote_set_cmdlist, &remote_show_cmdlist, |
5709 | 1); | |
5710 | ||
b96ec7ac AC |
5711 | add_packet_config_cmd (&remote_protocol_p, |
5712 | "p", "fetch-register", | |
5713 | set_remote_protocol_p_packet_cmd, | |
5714 | show_remote_protocol_p_packet_cmd, | |
5715 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5716 | 1); | |
5717 | ||
d471ea57 AC |
5718 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], |
5719 | "Z0", "software-breakpoint", | |
5720 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5721 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5722 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5723 | 0); | |
5724 | ||
5725 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5726 | "Z1", "hardware-breakpoint", | |
5727 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5728 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5729 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5730 | 0); | |
5731 | ||
5732 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5733 | "Z2", "write-watchpoint", | |
5734 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5735 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5736 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5737 | 0); | |
5738 | ||
5739 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5740 | "Z3", "read-watchpoint", | |
5741 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5742 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5743 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5744 | 0); | |
5745 | ||
5746 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5747 | "Z4", "access-watchpoint", | |
5748 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5749 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5750 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5751 | 0); | |
5752 | ||
802188a7 RM |
5753 | add_packet_config_cmd (&remote_protocol_qPart_auxv, |
5754 | "qPart_auxv", "read-aux-vector", | |
5755 | set_remote_protocol_qPart_auxv_packet_cmd, | |
5756 | show_remote_protocol_qPart_auxv_packet_cmd, | |
5757 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5758 | 0); | |
5759 | ||
23860348 | 5760 | /* Keep the old ``set remote Z-packet ...'' working. */ |
e9e68a56 AC |
5761 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
5762 | &remote_Z_packet_detect, "\ | |
3b64bf98 AC |
5763 | Set use of remote protocol `Z' packets", "\ |
5764 | Show use of remote protocol `Z' packets ", "\ | |
5765 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ | |
5766 | packets.", "\ | |
5767 | Use of remote protocol `Z' packets is %s", | |
e9e68a56 AC |
5768 | set_remote_protocol_Z_packet_cmd, |
5769 | show_remote_protocol_Z_packet_cmd, | |
5770 | &remote_set_cmdlist, &remote_show_cmdlist); | |
449092f6 CV |
5771 | |
5772 | /* Eventually initialize fileio. See fileio.c */ | |
5773 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5774 | } |