Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
197e01b6 | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
24b06219 | 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
29182b13 | 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 | |
197e01b6 EZ |
21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, 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" |
6867ae3e | 44 | #include "observer.h" |
a77053c2 | 45 | #include "solib.h" |
37a105a1 DJ |
46 | #include "cli/cli-decode.h" |
47 | #include "cli/cli-setshow.h" | |
c906108c | 48 | |
7a292a7a | 49 | #include <ctype.h> |
9846de1b | 50 | #include <sys/time.h> |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 CV |
61 | #include "remote-fileio.h" |
62 | ||
23860348 | 63 | /* Prototypes for local functions. */ |
6426a772 JM |
64 | static void cleanup_sigint_signal_handler (void *dummy); |
65 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 66 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 67 | |
a14ed312 KB |
68 | static void handle_remote_sigint (int); |
69 | static void handle_remote_sigint_twice (int); | |
70 | static void async_remote_interrupt (gdb_client_data); | |
71 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 72 | |
a14ed312 | 73 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 74 | |
a14ed312 | 75 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 76 | |
a14ed312 | 77 | static void remote_prepare_to_store (void); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_fetch_registers (int regno); |
c906108c | 80 | |
39f77062 KB |
81 | static void remote_resume (ptid_t ptid, int step, |
82 | enum target_signal siggnal); | |
83 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 84 | enum target_signal siggnal); |
a14ed312 KB |
85 | static void remote_open (char *name, int from_tty); |
86 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 87 | |
a14ed312 KB |
88 | static void extended_remote_open (char *name, int from_tty); |
89 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 90 | |
92d1e331 DJ |
91 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
92 | int async_p); | |
c906108c | 93 | |
a14ed312 | 94 | static void remote_close (int quitting); |
c906108c | 95 | |
a14ed312 | 96 | static void remote_store_registers (int regno); |
c906108c | 97 | |
a14ed312 KB |
98 | static void remote_mourn (void); |
99 | static void remote_async_mourn (void); | |
c906108c | 100 | |
a14ed312 | 101 | static void extended_remote_restart (void); |
c906108c | 102 | |
a14ed312 | 103 | static void extended_remote_mourn (void); |
c906108c | 104 | |
a14ed312 | 105 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 106 | |
6d820c5c | 107 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 108 | |
a14ed312 | 109 | static int readchar (int timeout); |
c906108c | 110 | |
39f77062 KB |
111 | static ptid_t remote_wait (ptid_t ptid, |
112 | struct target_waitstatus *status); | |
113 | static ptid_t remote_async_wait (ptid_t ptid, | |
114 | struct target_waitstatus *status); | |
c906108c | 115 | |
a14ed312 KB |
116 | static void remote_kill (void); |
117 | static void remote_async_kill (void); | |
c906108c | 118 | |
a14ed312 | 119 | static int tohex (int nib); |
c906108c | 120 | |
a14ed312 | 121 | static void remote_detach (char *args, int from_tty); |
c906108c | 122 | |
a14ed312 | 123 | static void remote_interrupt (int signo); |
c906108c | 124 | |
a14ed312 | 125 | static void remote_interrupt_twice (int signo); |
7a292a7a | 126 | |
a14ed312 | 127 | static void interrupt_query (void); |
c906108c | 128 | |
a14ed312 | 129 | static void set_thread (int, int); |
c906108c | 130 | |
39f77062 | 131 | static int remote_thread_alive (ptid_t); |
c906108c | 132 | |
a14ed312 | 133 | static void get_offsets (void); |
c906108c | 134 | |
6d820c5c DJ |
135 | static void skip_frame (void); |
136 | ||
137 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 138 | |
a14ed312 | 139 | static int hexnumlen (ULONGEST num); |
c906108c | 140 | |
a14ed312 | 141 | static void init_remote_ops (void); |
c906108c | 142 | |
a14ed312 | 143 | static void init_extended_remote_ops (void); |
c906108c | 144 | |
a14ed312 | 145 | static void remote_stop (void); |
c906108c | 146 | |
a14ed312 | 147 | static int ishex (int ch, int *val); |
c906108c | 148 | |
a14ed312 | 149 | static int stubhex (int ch); |
c906108c | 150 | |
a14ed312 | 151 | static int hexnumstr (char *, ULONGEST); |
c906108c | 152 | |
a14ed312 | 153 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 154 | |
a14ed312 | 155 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 156 | |
a14ed312 | 157 | static void print_packet (char *); |
c906108c | 158 | |
a14ed312 | 159 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 160 | |
a14ed312 | 161 | static void compare_sections_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void packet_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 166 | |
39f77062 | 167 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 168 | |
a14ed312 | 169 | static void remote_find_new_threads (void); |
c906108c | 170 | |
a14ed312 | 171 | static void record_currthread (int currthread); |
c906108c | 172 | |
30559e10 | 173 | static int fromhex (int a); |
c906108c | 174 | |
cfd77fa1 | 175 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 176 | |
cfd77fa1 | 177 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 178 | |
a14ed312 | 179 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 180 | |
a14ed312 | 181 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 182 | |
5a2468f5 | 183 | struct packet_config; |
5a2468f5 | 184 | |
a14ed312 | 185 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 186 | |
d471ea57 | 187 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 188 | |
a14ed312 | 189 | void _initialize_remote (void); |
c906108c | 190 | |
694f61fb | 191 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
192 | target is open()ed, remote.c should create a per-target description |
193 | of the remote protocol using that target's architecture. | |
ce2826aa | 194 | Unfortunately, the target stack doesn't include local state. For |
d01949b6 AC |
195 | the moment keep the information in the target's architecture |
196 | object. Sigh.. */ | |
197 | ||
ad10f812 AC |
198 | struct packet_reg |
199 | { | |
200 | long offset; /* Offset into G packet. */ | |
201 | long regnum; /* GDB's internal register number. */ | |
202 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 203 | int in_g_packet; /* Always part of G packet. */ |
23860348 MS |
204 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
205 | at present. */ | |
ad10f812 AC |
206 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
207 | }; | |
208 | ||
d01949b6 AC |
209 | struct remote_state |
210 | { | |
ad10f812 AC |
211 | /* Description of the remote protocol registers. */ |
212 | long sizeof_g_packet; | |
b323314b AC |
213 | |
214 | /* Description of the remote protocol registers indexed by REGNUM | |
215 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
216 | struct packet_reg *regs; | |
ad10f812 | 217 | |
d01949b6 AC |
218 | /* This is the size (in chars) of the first response to the ``g'' |
219 | packet. It is used as a heuristic when determining the maximum | |
220 | size of memory-read and memory-write packets. A target will | |
221 | typically only reserve a buffer large enough to hold the ``g'' | |
222 | packet. The size does not include packet overhead (headers and | |
23860348 | 223 | trailers). */ |
d01949b6 AC |
224 | long actual_register_packet_size; |
225 | ||
226 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 227 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 | 228 | long remote_packet_size; |
6d820c5c DJ |
229 | |
230 | /* A buffer to use for incoming packets, and its current size. The | |
231 | buffer is grown dynamically for larger incoming packets. | |
232 | Outgoing packets may also be constructed in this buffer. | |
233 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
234 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
235 | packets. */ | |
236 | char *buf; | |
237 | long buf_size; | |
d01949b6 AC |
238 | }; |
239 | ||
3c3bea1c | 240 | |
d01949b6 AC |
241 | /* Handle for retreving the remote protocol data from gdbarch. */ |
242 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
243 | ||
244 | static struct remote_state * | |
5ae5f592 | 245 | get_remote_state (void) |
d01949b6 | 246 | { |
451fbdda | 247 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
248 | } |
249 | ||
250 | static void * | |
251 | init_remote_state (struct gdbarch *gdbarch) | |
252 | { | |
253 | int regnum; | |
e5e78edc | 254 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state); |
d01949b6 | 255 | |
46845f5e | 256 | rs->sizeof_g_packet = 0; |
ad10f812 | 257 | |
b323314b | 258 | /* Assume a 1:1 regnum<->pnum table. */ |
e5e78edc AC |
259 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
260 | struct packet_reg); | |
b323314b | 261 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 262 | { |
b323314b AC |
263 | struct packet_reg *r = &rs->regs[regnum]; |
264 | r->pnum = regnum; | |
265 | r->regnum = regnum; | |
62700349 | 266 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 267 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 268 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d | 269 | |
23860348 | 270 | /* Compute packet size by accumulating the size of all registers. */ |
46845f5e KB |
271 | if (regnum < NUM_REGS) |
272 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); | |
ad10f812 AC |
273 | } |
274 | ||
d01949b6 AC |
275 | /* Default maximum number of characters in a packet body. Many |
276 | remote stubs have a hardwired buffer size of 400 bytes | |
277 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
278 | as the maximum packet-size to ensure that the packet and an extra | |
279 | NUL character can always fit in the buffer. This stops GDB | |
280 | trashing stubs that try to squeeze an extra NUL into what is | |
23860348 | 281 | already a full buffer (As of 1999-12-04 that was most stubs. */ |
d01949b6 AC |
282 | rs->remote_packet_size = 400 - 1; |
283 | ||
ad10f812 AC |
284 | /* Should rs->sizeof_g_packet needs more space than the |
285 | default, adjust the size accordingly. Remember that each byte is | |
286 | encoded as two characters. 32 is the overhead for the packet | |
287 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 288 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 289 | little. */ |
ad10f812 AC |
290 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
291 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
802188a7 | 292 | |
23860348 | 293 | /* This one is filled in when a ``g'' packet is received. */ |
d01949b6 AC |
294 | rs->actual_register_packet_size = 0; |
295 | ||
6d820c5c DJ |
296 | /* Create the buffer at a default size. Note that this would |
297 | leak memory if the gdbarch were ever destroyed; there's no | |
298 | way to register a destructor for it, and we can't realloc | |
299 | using the gdbarch obstack. But gdbarches are never | |
300 | destroyed. */ | |
301 | rs->buf_size = rs->remote_packet_size; | |
302 | rs->buf = xmalloc (rs->buf_size); | |
303 | ||
d01949b6 AC |
304 | return rs; |
305 | } | |
306 | ||
ad10f812 AC |
307 | static struct packet_reg * |
308 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
309 | { | |
b323314b AC |
310 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
311 | return NULL; | |
312 | else | |
ad10f812 | 313 | { |
b323314b AC |
314 | struct packet_reg *r = &rs->regs[regnum]; |
315 | gdb_assert (r->regnum == regnum); | |
316 | return r; | |
ad10f812 | 317 | } |
ad10f812 AC |
318 | } |
319 | ||
320 | static struct packet_reg * | |
321 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
322 | { | |
b323314b AC |
323 | int i; |
324 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 325 | { |
b323314b AC |
326 | struct packet_reg *r = &rs->regs[i]; |
327 | if (r->pnum == pnum) | |
328 | return r; | |
ad10f812 AC |
329 | } |
330 | return NULL; | |
d01949b6 AC |
331 | } |
332 | ||
3c3bea1c GS |
333 | /* FIXME: graces/2002-08-08: These variables should eventually be |
334 | bound to an instance of the target object (as in gdbarch-tdep()), | |
335 | when such a thing exists. */ | |
336 | ||
337 | /* This is set to the data address of the access causing the target | |
338 | to stop for a watchpoint. */ | |
339 | static CORE_ADDR remote_watch_data_address; | |
340 | ||
94e08568 | 341 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
342 | static int remote_stopped_by_watchpoint_p; |
343 | ||
c906108c SS |
344 | static struct target_ops remote_ops; |
345 | ||
346 | static struct target_ops extended_remote_ops; | |
347 | ||
43ff13b4 | 348 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 349 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
350 | static struct target_ops remote_async_ops; |
351 | ||
352 | static struct target_ops extended_async_remote_ops; | |
353 | ||
6426a772 JM |
354 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
355 | ``forever'' still use the normal timeout mechanism. This is | |
356 | currently used by the ASYNC code to guarentee that target reads | |
357 | during the initial connect always time-out. Once getpkt has been | |
358 | modified to return a timeout indication and, in turn | |
359 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 360 | this can go away. */ |
6426a772 JM |
361 | static int wait_forever_enabled_p = 1; |
362 | ||
363 | ||
c906108c SS |
364 | /* This variable chooses whether to send a ^C or a break when the user |
365 | requests program interruption. Although ^C is usually what remote | |
366 | systems expect, and that is the default here, sometimes a break is | |
367 | preferable instead. */ | |
368 | ||
369 | static int remote_break; | |
370 | ||
c906108c SS |
371 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
372 | remote_open knows that we don't have a file open when the program | |
373 | starts. */ | |
819cc324 | 374 | static struct serial *remote_desc = NULL; |
c906108c | 375 | |
c906108c SS |
376 | /* This variable sets the number of bits in an address that are to be |
377 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
378 | leading zeros, the entire address would be sent. This variable | |
379 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
380 | initial implementation of remote.c restricted the address sent in | |
381 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
382 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
383 | address was never sent. Since fixing this bug may cause a break in | |
384 | some remote targets this variable is principly provided to | |
23860348 | 385 | facilitate backward compatibility. */ |
c906108c SS |
386 | |
387 | static int remote_address_size; | |
388 | ||
6426a772 JM |
389 | /* Tempoary to track who currently owns the terminal. See |
390 | target_async_terminal_* for more details. */ | |
391 | ||
392 | static int remote_async_terminal_ours_p; | |
393 | ||
11cf8741 | 394 | \f |
11cf8741 | 395 | /* User configurable variables for the number of characters in a |
24b06219 | 396 | memory read/write packet. MIN (rs->remote_packet_size, |
ad10f812 | 397 | rs->sizeof_g_packet) is the default. Some targets need smaller |
24b06219 | 398 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
399 | (speed up transfers). The variables ``preferred_*'' (the user |
400 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 401 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
402 | |
403 | struct memory_packet_config | |
404 | { | |
405 | char *name; | |
406 | long size; | |
407 | int fixed_p; | |
408 | }; | |
409 | ||
410 | /* Compute the current size of a read/write packet. Since this makes | |
411 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
412 | ||
413 | static long | |
414 | get_memory_packet_size (struct memory_packet_config *config) | |
415 | { | |
d01949b6 | 416 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
417 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
418 | law?) that some hosts don't cope very well with large alloca() | |
419 | calls. Eventually the alloca() code will be replaced by calls to | |
420 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 421 | be lifted or removed. */ |
11cf8741 JM |
422 | #ifndef MAX_REMOTE_PACKET_SIZE |
423 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
424 | #endif | |
3de11b2e | 425 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 426 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 427 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
428 | #endif |
429 | long what_they_get; | |
430 | if (config->fixed_p) | |
431 | { | |
432 | if (config->size <= 0) | |
433 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
434 | else | |
435 | what_they_get = config->size; | |
436 | } | |
437 | else | |
438 | { | |
24b06219 | 439 | what_they_get = rs->remote_packet_size; |
23860348 | 440 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
441 | if (config->size > 0 |
442 | && what_they_get > config->size) | |
443 | what_they_get = config->size; | |
23860348 | 444 | /* Limit it to the size of the targets ``g'' response. */ |
d01949b6 AC |
445 | if ((rs->actual_register_packet_size) > 0 |
446 | && what_they_get > (rs->actual_register_packet_size)) | |
447 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
448 | } |
449 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
450 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
451 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
452 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
453 | |
454 | /* Make sure there is room in the global buffer for this packet | |
455 | (including its trailing NUL byte). */ | |
456 | if (rs->buf_size < what_they_get + 1) | |
457 | { | |
458 | rs->buf_size = 2 * what_they_get; | |
459 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
460 | } | |
461 | ||
11cf8741 JM |
462 | return what_they_get; |
463 | } | |
464 | ||
465 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 466 | something really big then do a sanity check. */ |
11cf8741 JM |
467 | |
468 | static void | |
469 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
470 | { | |
471 | int fixed_p = config->fixed_p; | |
472 | long size = config->size; | |
473 | if (args == NULL) | |
8a3fe4f8 | 474 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
475 | else if (strcmp (args, "hard") == 0 |
476 | || strcmp (args, "fixed") == 0) | |
477 | fixed_p = 1; | |
478 | else if (strcmp (args, "soft") == 0 | |
479 | || strcmp (args, "limit") == 0) | |
480 | fixed_p = 0; | |
481 | else | |
482 | { | |
483 | char *end; | |
484 | size = strtoul (args, &end, 0); | |
485 | if (args == end) | |
8a3fe4f8 | 486 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
487 | #if 0 |
488 | /* Instead of explicitly capping the size of a packet to | |
489 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
490 | instead allowed to set the size to something arbitrarily | |
23860348 | 491 | large. */ |
11cf8741 | 492 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 493 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
494 | #endif |
495 | } | |
23860348 | 496 | /* Extra checks? */ |
11cf8741 JM |
497 | if (fixed_p && !config->fixed_p) |
498 | { | |
e2e0b3e5 AC |
499 | if (! query (_("The target may not be able to correctly handle a %s\n" |
500 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 501 | config->name, size)) |
8a3fe4f8 | 502 | error (_("Packet size not changed.")); |
11cf8741 | 503 | } |
23860348 | 504 | /* Update the config. */ |
11cf8741 JM |
505 | config->fixed_p = fixed_p; |
506 | config->size = size; | |
507 | } | |
508 | ||
509 | static void | |
510 | show_memory_packet_size (struct memory_packet_config *config) | |
511 | { | |
a3f17187 | 512 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 513 | if (config->fixed_p) |
a3f17187 | 514 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
515 | get_memory_packet_size (config)); |
516 | else | |
a3f17187 | 517 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
518 | get_memory_packet_size (config)); |
519 | } | |
520 | ||
521 | static struct memory_packet_config memory_write_packet_config = | |
522 | { | |
523 | "memory-write-packet-size", | |
524 | }; | |
525 | ||
526 | static void | |
527 | set_memory_write_packet_size (char *args, int from_tty) | |
528 | { | |
529 | set_memory_packet_size (args, &memory_write_packet_config); | |
530 | } | |
531 | ||
532 | static void | |
533 | show_memory_write_packet_size (char *args, int from_tty) | |
534 | { | |
535 | show_memory_packet_size (&memory_write_packet_config); | |
536 | } | |
537 | ||
538 | static long | |
539 | get_memory_write_packet_size (void) | |
540 | { | |
541 | return get_memory_packet_size (&memory_write_packet_config); | |
542 | } | |
543 | ||
544 | static struct memory_packet_config memory_read_packet_config = | |
545 | { | |
546 | "memory-read-packet-size", | |
547 | }; | |
548 | ||
549 | static void | |
550 | set_memory_read_packet_size (char *args, int from_tty) | |
551 | { | |
552 | set_memory_packet_size (args, &memory_read_packet_config); | |
553 | } | |
554 | ||
555 | static void | |
556 | show_memory_read_packet_size (char *args, int from_tty) | |
557 | { | |
558 | show_memory_packet_size (&memory_read_packet_config); | |
559 | } | |
560 | ||
561 | static long | |
562 | get_memory_read_packet_size (void) | |
563 | { | |
d01949b6 | 564 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
565 | long size = get_memory_packet_size (&memory_read_packet_config); |
566 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
567 | extra buffer size argument before the memory read size can be | |
24b06219 MK |
568 | increased beyond RS->remote_packet_size. */ |
569 | if (size > rs->remote_packet_size) | |
570 | size = rs->remote_packet_size; | |
11cf8741 JM |
571 | return size; |
572 | } | |
573 | ||
11cf8741 | 574 | \f |
5a2468f5 JM |
575 | /* Generic configuration support for packets the stub optionally |
576 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 577 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
578 | |
579 | enum packet_support | |
580 | { | |
581 | PACKET_SUPPORT_UNKNOWN = 0, | |
582 | PACKET_ENABLE, | |
583 | PACKET_DISABLE | |
584 | }; | |
585 | ||
5a2468f5 JM |
586 | struct packet_config |
587 | { | |
5a2468f5 JM |
588 | char *name; |
589 | char *title; | |
7f19b9a2 | 590 | enum auto_boolean detect; |
5a2468f5 JM |
591 | enum packet_support support; |
592 | }; | |
593 | ||
d471ea57 | 594 | /* Analyze a packet's return value and update the packet config |
23860348 | 595 | accordingly. */ |
d471ea57 AC |
596 | |
597 | enum packet_result | |
598 | { | |
599 | PACKET_ERROR, | |
600 | PACKET_OK, | |
601 | PACKET_UNKNOWN | |
602 | }; | |
603 | ||
5a2468f5 | 604 | static void |
d471ea57 | 605 | update_packet_config (struct packet_config *config) |
5a2468f5 | 606 | { |
d471ea57 AC |
607 | switch (config->detect) |
608 | { | |
7f19b9a2 | 609 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
610 | config->support = PACKET_ENABLE; |
611 | break; | |
7f19b9a2 | 612 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
613 | config->support = PACKET_DISABLE; |
614 | break; | |
7f19b9a2 | 615 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
616 | config->support = PACKET_SUPPORT_UNKNOWN; |
617 | break; | |
618 | } | |
5a2468f5 JM |
619 | } |
620 | ||
621 | static void | |
fba45db2 | 622 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
623 | { |
624 | char *support = "internal-error"; | |
625 | switch (config->support) | |
626 | { | |
627 | case PACKET_ENABLE: | |
628 | support = "enabled"; | |
629 | break; | |
630 | case PACKET_DISABLE: | |
631 | support = "disabled"; | |
632 | break; | |
633 | case PACKET_SUPPORT_UNKNOWN: | |
634 | support = "unknown"; | |
635 | break; | |
636 | } | |
637 | switch (config->detect) | |
638 | { | |
7f19b9a2 | 639 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
640 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
641 | config->name, support); | |
5a2468f5 | 642 | break; |
7f19b9a2 AC |
643 | case AUTO_BOOLEAN_TRUE: |
644 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
645 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
646 | config->name, support); | |
8e248173 | 647 | break; |
5a2468f5 JM |
648 | } |
649 | } | |
650 | ||
651 | static void | |
d471ea57 AC |
652 | add_packet_config_cmd (struct packet_config *config, |
653 | char *name, | |
654 | char *title, | |
e9e68a56 | 655 | cmd_sfunc_ftype *set_func, |
08546159 | 656 | show_value_ftype *show_func, |
d471ea57 AC |
657 | struct cmd_list_element **set_remote_list, |
658 | struct cmd_list_element **show_remote_list, | |
659 | int legacy) | |
660 | { | |
5a2468f5 JM |
661 | char *set_doc; |
662 | char *show_doc; | |
d471ea57 | 663 | char *cmd_name; |
3ed07be4 | 664 | |
5a2468f5 JM |
665 | config->name = name; |
666 | config->title = title; | |
7f19b9a2 | 667 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 668 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
669 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
670 | name, title); | |
671 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
672 | name, title); | |
d471ea57 | 673 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 674 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 675 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 676 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
e9e68a56 AC |
677 | set_func, show_func, |
678 | set_remote_list, show_remote_list); | |
23860348 | 679 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
680 | if (legacy) |
681 | { | |
682 | char *legacy_name; | |
b435e160 | 683 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
684 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
685 | set_remote_list); | |
686 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
687 | show_remote_list); | |
688 | } | |
5a2468f5 JM |
689 | } |
690 | ||
d471ea57 AC |
691 | static enum packet_result |
692 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 693 | { |
d471ea57 | 694 | if (buf[0] != '\0') |
5a2468f5 | 695 | { |
d471ea57 | 696 | /* The stub recognized the packet request. Check that the |
23860348 | 697 | operation succeeded. */ |
d471ea57 AC |
698 | switch (config->support) |
699 | { | |
700 | case PACKET_SUPPORT_UNKNOWN: | |
701 | if (remote_debug) | |
702 | fprintf_unfiltered (gdb_stdlog, | |
703 | "Packet %s (%s) is supported\n", | |
704 | config->name, config->title); | |
705 | config->support = PACKET_ENABLE; | |
706 | break; | |
707 | case PACKET_DISABLE: | |
8e65ff28 | 708 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 709 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
710 | break; |
711 | case PACKET_ENABLE: | |
712 | break; | |
713 | } | |
714 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
23860348 | 715 | /* "OK" - definitly OK. */ |
d471ea57 AC |
716 | return PACKET_OK; |
717 | if (buf[0] == 'E' | |
718 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
719 | && buf[3] == '\0') | |
23860348 | 720 | /* "Enn" - definitly an error. */ |
d471ea57 | 721 | return PACKET_ERROR; |
23860348 | 722 | /* The packet may or may not be OK. Just assume it is. */ |
d471ea57 AC |
723 | return PACKET_OK; |
724 | } | |
725 | else | |
726 | { | |
23860348 | 727 | /* The stub does not support the packet. */ |
d471ea57 AC |
728 | switch (config->support) |
729 | { | |
730 | case PACKET_ENABLE: | |
7f19b9a2 | 731 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 732 | /* If the stub previously indicated that the packet was |
23860348 | 733 | supported then there is a protocol error.. */ |
8a3fe4f8 | 734 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
735 | config->name, config->title); |
736 | else | |
23860348 | 737 | /* The user set it wrong. */ |
8a3fe4f8 | 738 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
739 | config->name, config->title); |
740 | break; | |
741 | case PACKET_SUPPORT_UNKNOWN: | |
742 | if (remote_debug) | |
743 | fprintf_unfiltered (gdb_stdlog, | |
744 | "Packet %s (%s) is NOT supported\n", | |
745 | config->name, config->title); | |
746 | config->support = PACKET_DISABLE; | |
747 | break; | |
748 | case PACKET_DISABLE: | |
749 | break; | |
750 | } | |
751 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
752 | } |
753 | } | |
754 | ||
444abaca DJ |
755 | enum { |
756 | PACKET_vCont = 0, | |
757 | PACKET_X, | |
758 | PACKET_qSymbol, | |
759 | PACKET_P, | |
760 | PACKET_p, | |
761 | PACKET_Z0, | |
762 | PACKET_Z1, | |
763 | PACKET_Z2, | |
764 | PACKET_Z3, | |
765 | PACKET_Z4, | |
766 | PACKET_qPart_auxv, | |
767 | PACKET_qGetTLSAddr, | |
768 | PACKET_MAX | |
769 | }; | |
506fb367 | 770 | |
444abaca | 771 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
772 | |
773 | static void | |
444abaca DJ |
774 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
775 | struct cmd_list_element *c) | |
dc8acb97 | 776 | { |
444abaca | 777 | struct packet_config *packet; |
dc8acb97 | 778 | |
444abaca DJ |
779 | for (packet = remote_protocol_packets; |
780 | packet < &remote_protocol_packets[PACKET_MAX]; | |
781 | packet++) | |
782 | { | |
783 | if (&packet->detect == c->var) | |
784 | { | |
785 | update_packet_config (packet); | |
786 | return; | |
787 | } | |
788 | } | |
789 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
790 | c->name); | |
dc8acb97 MS |
791 | } |
792 | ||
5a2468f5 | 793 | static void |
444abaca DJ |
794 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
795 | struct cmd_list_element *c, | |
796 | const char *value) | |
5a2468f5 | 797 | { |
444abaca | 798 | struct packet_config *packet; |
5a2468f5 | 799 | |
444abaca DJ |
800 | for (packet = remote_protocol_packets; |
801 | packet < &remote_protocol_packets[PACKET_MAX]; | |
802 | packet++) | |
803 | { | |
804 | if (&packet->detect == c->var) | |
805 | { | |
806 | show_packet_config_cmd (packet); | |
807 | return; | |
808 | } | |
809 | } | |
810 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
811 | c->name); | |
5a2468f5 JM |
812 | } |
813 | ||
d471ea57 AC |
814 | /* Should we try one of the 'Z' requests? */ |
815 | ||
816 | enum Z_packet_type | |
817 | { | |
818 | Z_PACKET_SOFTWARE_BP, | |
819 | Z_PACKET_HARDWARE_BP, | |
820 | Z_PACKET_WRITE_WP, | |
821 | Z_PACKET_READ_WP, | |
822 | Z_PACKET_ACCESS_WP, | |
823 | NR_Z_PACKET_TYPES | |
824 | }; | |
96baa820 | 825 | |
d471ea57 | 826 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 827 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 828 | |
7f19b9a2 | 829 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
830 | |
831 | static void | |
fba45db2 KB |
832 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
833 | struct cmd_list_element *c) | |
96baa820 | 834 | { |
d471ea57 AC |
835 | int i; |
836 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
837 | { | |
444abaca DJ |
838 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
839 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 840 | } |
96baa820 JM |
841 | } |
842 | ||
843 | static void | |
08546159 AC |
844 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
845 | struct cmd_list_element *c, | |
846 | const char *value) | |
96baa820 | 847 | { |
d471ea57 AC |
848 | int i; |
849 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
850 | { | |
444abaca | 851 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 852 | } |
96baa820 JM |
853 | } |
854 | ||
9d1f7ab2 MS |
855 | /* Should we try the 'ThreadInfo' query packet? |
856 | ||
857 | This variable (NOT available to the user: auto-detect only!) | |
858 | determines whether GDB will use the new, simpler "ThreadInfo" | |
859 | query or the older, more complex syntax for thread queries. | |
802188a7 | 860 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
861 | and set to false when the target fails to recognize it). */ |
862 | ||
863 | static int use_threadinfo_query; | |
864 | static int use_threadextra_query; | |
865 | ||
23860348 | 866 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
867 | static void *sigint_remote_twice_token; |
868 | static void *sigint_remote_token; | |
43ff13b4 | 869 | |
c906108c SS |
870 | /* These are pointers to hook functions that may be set in order to |
871 | modify resume/wait behavior for a particular architecture. */ | |
872 | ||
9a4105ab AC |
873 | void (*deprecated_target_resume_hook) (void); |
874 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
875 | \f |
876 | ||
c5aa993b | 877 | |
c906108c SS |
878 | /* These are the threads which we last sent to the remote system. |
879 | -1 for all or -2 for not sent yet. */ | |
880 | static int general_thread; | |
cce74817 | 881 | static int continue_thread; |
c906108c SS |
882 | |
883 | /* Call this function as a result of | |
884 | 1) A halt indication (T packet) containing a thread id | |
885 | 2) A direct query of currthread | |
886 | 3) Successful execution of set thread | |
887 | */ | |
888 | ||
889 | static void | |
fba45db2 | 890 | record_currthread (int currthread) |
c906108c | 891 | { |
c906108c | 892 | general_thread = currthread; |
cce74817 | 893 | |
c906108c SS |
894 | /* If this is a new thread, add it to GDB's thread list. |
895 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 896 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 897 | { |
39f77062 | 898 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 899 | ui_out_text (uiout, "[New "); |
39f77062 | 900 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 901 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 902 | } |
c906108c SS |
903 | } |
904 | ||
905 | #define MAGIC_NULL_PID 42000 | |
906 | ||
907 | static void | |
fba45db2 | 908 | set_thread (int th, int gen) |
c906108c | 909 | { |
d01949b6 | 910 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 911 | char *buf = rs->buf; |
cce74817 | 912 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
913 | |
914 | if (state == th) | |
915 | return; | |
916 | ||
917 | buf[0] = 'H'; | |
918 | buf[1] = gen ? 'g' : 'c'; | |
919 | if (th == MAGIC_NULL_PID) | |
920 | { | |
921 | buf[2] = '0'; | |
922 | buf[3] = '\0'; | |
923 | } | |
924 | else if (th < 0) | |
ecbc58df | 925 | xsnprintf (&buf[2], rs->remote_packet_size - 2, "-%x", -th); |
c906108c | 926 | else |
ecbc58df | 927 | xsnprintf (&buf[2], rs->remote_packet_size - 2, "%x", th); |
c906108c | 928 | putpkt (buf); |
6d820c5c | 929 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 930 | if (gen) |
c5aa993b | 931 | general_thread = th; |
c906108c | 932 | else |
cce74817 | 933 | continue_thread = th; |
c906108c SS |
934 | } |
935 | \f | |
936 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
937 | ||
938 | static int | |
39f77062 | 939 | remote_thread_alive (ptid_t ptid) |
c906108c | 940 | { |
6d820c5c | 941 | struct remote_state *rs = get_remote_state (); |
39f77062 | 942 | int tid = PIDGET (ptid); |
6d820c5c | 943 | char *buf = rs->buf; |
c906108c | 944 | |
cce74817 | 945 | if (tid < 0) |
6d820c5c | 946 | xsnprintf (buf, rs->remote_packet_size, "T-%08x", -tid); |
c906108c | 947 | else |
6d820c5c | 948 | xsnprintf (buf, rs->remote_packet_size, "T%08x", tid); |
c906108c | 949 | putpkt (buf); |
6d820c5c | 950 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
951 | return (buf[0] == 'O' && buf[1] == 'K'); |
952 | } | |
953 | ||
954 | /* About these extended threadlist and threadinfo packets. They are | |
955 | variable length packets but, the fields within them are often fixed | |
956 | length. They are redundent enough to send over UDP as is the | |
957 | remote protocol in general. There is a matching unit test module | |
958 | in libstub. */ | |
959 | ||
cce74817 JM |
960 | #define OPAQUETHREADBYTES 8 |
961 | ||
962 | /* a 64 bit opaque identifier */ | |
963 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
964 | ||
23860348 MS |
965 | /* WARNING: This threadref data structure comes from the remote O.S., |
966 | libstub protocol encoding, and remote.c. it is not particularly | |
967 | changable. */ | |
cce74817 JM |
968 | |
969 | /* Right now, the internal structure is int. We want it to be bigger. | |
970 | Plan to fix this. | |
c5aa993b | 971 | */ |
cce74817 | 972 | |
23860348 | 973 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 974 | |
9d1f7ab2 | 975 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 976 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
977 | |
978 | struct gdb_ext_thread_info | |
c5aa993b | 979 | { |
23860348 MS |
980 | threadref threadid; /* External form of thread reference. */ |
981 | int active; /* Has state interesting to GDB? | |
982 | regs, stack. */ | |
983 | char display[256]; /* Brief state display, name, | |
cedea757 | 984 | blocked/suspended. */ |
23860348 MS |
985 | char shortname[32]; /* To be used to name threads. */ |
986 | char more_display[256]; /* Long info, statistics, queue depth, | |
987 | whatever. */ | |
c5aa993b | 988 | }; |
cce74817 JM |
989 | |
990 | /* The volume of remote transfers can be limited by submitting | |
991 | a mask containing bits specifying the desired information. | |
992 | Use a union of these values as the 'selection' parameter to | |
993 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 994 | */ |
cce74817 JM |
995 | |
996 | #define TAG_THREADID 1 | |
997 | #define TAG_EXISTS 2 | |
998 | #define TAG_DISPLAY 4 | |
999 | #define TAG_THREADNAME 8 | |
c5aa993b | 1000 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1001 | |
23860348 | 1002 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1003 | |
b2dd6311 | 1004 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1005 | |
a14ed312 | 1006 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1007 | |
a14ed312 | 1008 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1009 | |
23860348 | 1010 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1011 | |
a14ed312 | 1012 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1013 | |
a14ed312 | 1014 | static char *pack_int (char *buf, int value); |
cce74817 | 1015 | |
a14ed312 | 1016 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1017 | |
a14ed312 | 1018 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1019 | |
23860348 | 1020 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1021 | |
23860348 | 1022 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1023 | |
23860348 | 1024 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1025 | |
23860348 | 1026 | static int threadref_to_int (threadref *ref); |
cce74817 | 1027 | |
23860348 | 1028 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1029 | |
23860348 | 1030 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1031 | |
23860348 MS |
1032 | static char *pack_threadinfo_request (char *pkt, int mode, |
1033 | threadref *id); | |
cce74817 | 1034 | |
a14ed312 | 1035 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1036 | threadref *expectedref, |
a14ed312 KB |
1037 | struct gdb_ext_thread_info |
1038 | *info); | |
cce74817 JM |
1039 | |
1040 | ||
23860348 MS |
1041 | static int remote_get_threadinfo (threadref *threadid, |
1042 | int fieldset, /*TAG mask */ | |
a14ed312 | 1043 | struct gdb_ext_thread_info *info); |
cce74817 | 1044 | |
a14ed312 KB |
1045 | static char *pack_threadlist_request (char *pkt, int startflag, |
1046 | int threadcount, | |
23860348 | 1047 | threadref *nextthread); |
cce74817 | 1048 | |
a14ed312 KB |
1049 | static int parse_threadlist_response (char *pkt, |
1050 | int result_limit, | |
23860348 MS |
1051 | threadref *original_echo, |
1052 | threadref *resultlist, | |
1053 | int *doneflag); | |
cce74817 | 1054 | |
a14ed312 | 1055 | static int remote_get_threadlist (int startflag, |
23860348 | 1056 | threadref *nextthread, |
a14ed312 KB |
1057 | int result_limit, |
1058 | int *done, | |
23860348 MS |
1059 | int *result_count, |
1060 | threadref *threadlist); | |
cce74817 | 1061 | |
23860348 | 1062 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1063 | |
a14ed312 KB |
1064 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1065 | void *context, int looplimit); | |
cce74817 | 1066 | |
23860348 | 1067 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1068 | |
23860348 | 1069 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1070 | |
1071 | static const char hexchars[] = "0123456789abcdef"; | |
1072 | ||
1073 | static int | |
fba45db2 | 1074 | ishex (int ch, int *val) |
c906108c SS |
1075 | { |
1076 | if ((ch >= 'a') && (ch <= 'f')) | |
1077 | { | |
1078 | *val = ch - 'a' + 10; | |
1079 | return 1; | |
1080 | } | |
1081 | if ((ch >= 'A') && (ch <= 'F')) | |
1082 | { | |
1083 | *val = ch - 'A' + 10; | |
1084 | return 1; | |
1085 | } | |
1086 | if ((ch >= '0') && (ch <= '9')) | |
1087 | { | |
1088 | *val = ch - '0'; | |
1089 | return 1; | |
1090 | } | |
1091 | return 0; | |
1092 | } | |
1093 | ||
1094 | static int | |
fba45db2 | 1095 | stubhex (int ch) |
c906108c SS |
1096 | { |
1097 | if (ch >= 'a' && ch <= 'f') | |
1098 | return ch - 'a' + 10; | |
1099 | if (ch >= '0' && ch <= '9') | |
1100 | return ch - '0'; | |
1101 | if (ch >= 'A' && ch <= 'F') | |
1102 | return ch - 'A' + 10; | |
1103 | return -1; | |
1104 | } | |
1105 | ||
1106 | static int | |
fba45db2 | 1107 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1108 | { |
1109 | int nibble; | |
1110 | int retval = 0; | |
1111 | ||
1112 | while (fieldlength) | |
1113 | { | |
1114 | nibble = stubhex (*buff++); | |
1115 | retval |= nibble; | |
1116 | fieldlength--; | |
1117 | if (fieldlength) | |
1118 | retval = retval << 4; | |
1119 | } | |
1120 | return retval; | |
1121 | } | |
1122 | ||
1123 | char * | |
fba45db2 | 1124 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1125 | ULONGEST *result) |
c906108c SS |
1126 | { |
1127 | int nibble; | |
1128 | int retval = 0; | |
1129 | ||
1130 | while (ishex (*buff, &nibble)) | |
1131 | { | |
1132 | buff++; | |
1133 | retval = retval << 4; | |
1134 | retval |= nibble & 0x0f; | |
1135 | } | |
1136 | *result = retval; | |
1137 | return buff; | |
1138 | } | |
1139 | ||
1140 | static char * | |
fba45db2 | 1141 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1142 | { |
1143 | ishex (*buf++, val); | |
1144 | return buf; | |
1145 | } | |
1146 | ||
1147 | static char * | |
fba45db2 | 1148 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1149 | { |
1150 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1151 | return buf; | |
1152 | } | |
1153 | ||
1154 | static char * | |
fba45db2 | 1155 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1156 | { |
1157 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1158 | *pkt++ = hexchars[(byte & 0xf)]; | |
1159 | return pkt; | |
1160 | } | |
1161 | ||
1162 | static char * | |
fba45db2 | 1163 | unpack_byte (char *buf, int *value) |
c906108c SS |
1164 | { |
1165 | *value = stub_unpack_int (buf, 2); | |
1166 | return buf + 2; | |
1167 | } | |
1168 | ||
1169 | static char * | |
fba45db2 | 1170 | pack_int (char *buf, int value) |
c906108c SS |
1171 | { |
1172 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1173 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1174 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1175 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1176 | return buf; | |
1177 | } | |
1178 | ||
1179 | static char * | |
fba45db2 | 1180 | unpack_int (char *buf, int *value) |
c906108c SS |
1181 | { |
1182 | *value = stub_unpack_int (buf, 8); | |
1183 | return buf + 8; | |
1184 | } | |
1185 | ||
23860348 | 1186 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1187 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1188 | |
1189 | static char * | |
fba45db2 | 1190 | pack_string (char *pkt, char *string) |
c906108c SS |
1191 | { |
1192 | char ch; | |
1193 | int len; | |
1194 | ||
1195 | len = strlen (string); | |
1196 | if (len > 200) | |
23860348 | 1197 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1198 | pkt = pack_hex_byte (pkt, len); |
1199 | while (len-- > 0) | |
1200 | { | |
1201 | ch = *string++; | |
1202 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1203 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1204 | *pkt++ = ch; |
1205 | } | |
1206 | return pkt; | |
1207 | } | |
1208 | #endif /* 0 (unused) */ | |
1209 | ||
1210 | static char * | |
fba45db2 | 1211 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1212 | { |
1213 | while (length--) | |
1214 | *dest++ = *src++; | |
1215 | *dest = '\0'; | |
1216 | return src; | |
1217 | } | |
1218 | ||
1219 | static char * | |
fba45db2 | 1220 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1221 | { |
1222 | char *limit; | |
1223 | unsigned char *altid; | |
1224 | ||
1225 | altid = (unsigned char *) id; | |
1226 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1227 | while (pkt < limit) | |
1228 | pkt = pack_hex_byte (pkt, *altid++); | |
1229 | return pkt; | |
1230 | } | |
1231 | ||
1232 | ||
1233 | static char * | |
fba45db2 | 1234 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1235 | { |
1236 | char *altref; | |
1237 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1238 | int x, y; | |
1239 | ||
1240 | altref = (char *) id; | |
1241 | ||
1242 | while (inbuf < limit) | |
1243 | { | |
1244 | x = stubhex (*inbuf++); | |
1245 | y = stubhex (*inbuf++); | |
1246 | *altref++ = (x << 4) | y; | |
1247 | } | |
1248 | return inbuf; | |
1249 | } | |
1250 | ||
1251 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1252 | ints. This is due to a mismatch of specifications. We would like | |
1253 | to use 64bit thread references internally. This is an adapter | |
1254 | function. */ | |
1255 | ||
1256 | void | |
fba45db2 | 1257 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1258 | { |
1259 | unsigned char *scan; | |
1260 | ||
1261 | scan = (unsigned char *) id; | |
1262 | { | |
1263 | int i = 4; | |
1264 | while (i--) | |
1265 | *scan++ = 0; | |
1266 | } | |
1267 | *scan++ = (value >> 24) & 0xff; | |
1268 | *scan++ = (value >> 16) & 0xff; | |
1269 | *scan++ = (value >> 8) & 0xff; | |
1270 | *scan++ = (value & 0xff); | |
1271 | } | |
1272 | ||
1273 | static int | |
fba45db2 | 1274 | threadref_to_int (threadref *ref) |
c906108c SS |
1275 | { |
1276 | int i, value = 0; | |
1277 | unsigned char *scan; | |
1278 | ||
cfd77fa1 | 1279 | scan = *ref; |
c906108c SS |
1280 | scan += 4; |
1281 | i = 4; | |
1282 | while (i-- > 0) | |
1283 | value = (value << 8) | ((*scan++) & 0xff); | |
1284 | return value; | |
1285 | } | |
1286 | ||
1287 | static void | |
fba45db2 | 1288 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1289 | { |
1290 | int i; | |
1291 | unsigned char *csrc, *cdest; | |
1292 | ||
1293 | csrc = (unsigned char *) src; | |
1294 | cdest = (unsigned char *) dest; | |
1295 | i = 8; | |
1296 | while (i--) | |
1297 | *cdest++ = *csrc++; | |
1298 | } | |
1299 | ||
1300 | static int | |
fba45db2 | 1301 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1302 | { |
23860348 | 1303 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1304 | #if 0 |
1305 | unsigned char *srcp, *destp; | |
1306 | int i, result; | |
1307 | srcp = (char *) src; | |
1308 | destp = (char *) dest; | |
1309 | ||
1310 | result = 1; | |
1311 | while (i-- > 0) | |
1312 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1313 | return result; | |
1314 | #endif | |
1315 | return 1; | |
1316 | } | |
1317 | ||
1318 | /* | |
c5aa993b JM |
1319 | threadid:1, # always request threadid |
1320 | context_exists:2, | |
1321 | display:4, | |
1322 | unique_name:8, | |
1323 | more_display:16 | |
1324 | */ | |
c906108c SS |
1325 | |
1326 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1327 | ||
1328 | static char * | |
fba45db2 | 1329 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1330 | { |
23860348 MS |
1331 | *pkt++ = 'q'; /* Info Query */ |
1332 | *pkt++ = 'P'; /* process or thread info */ | |
1333 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1334 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1335 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1336 | return pkt; |
1337 | } | |
1338 | ||
23860348 | 1339 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1340 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1341 | add more fields as time goes by. */ |
c906108c | 1342 | |
23860348 | 1343 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1344 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1345 | fetch registers and its stack? */ |
c5aa993b | 1346 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1347 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1348 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1349 | the process. */ |
c906108c SS |
1350 | |
1351 | static int | |
fba45db2 KB |
1352 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1353 | struct gdb_ext_thread_info *info) | |
c906108c | 1354 | { |
d01949b6 | 1355 | struct remote_state *rs = get_remote_state (); |
c906108c | 1356 | int mask, length; |
cfd77fa1 | 1357 | int tag; |
c906108c | 1358 | threadref ref; |
6d820c5c | 1359 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1360 | int retval = 1; |
1361 | ||
23860348 | 1362 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1363 | info->active = 0; |
1364 | info->display[0] = '\0'; | |
1365 | info->shortname[0] = '\0'; | |
1366 | info->more_display[0] = '\0'; | |
1367 | ||
23860348 MS |
1368 | /* Assume the characters indicating the packet type have been |
1369 | stripped. */ | |
c906108c SS |
1370 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1371 | pkt = unpack_threadid (pkt, &ref); | |
1372 | ||
1373 | if (mask == 0) | |
8a3fe4f8 | 1374 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1375 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1376 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1377 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1378 | return 0; |
1379 | } | |
1380 | copy_threadref (&info->threadid, &ref); | |
1381 | ||
23860348 | 1382 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1383 | |
23860348 MS |
1384 | /* Packets are terminated with nulls. */ |
1385 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1386 | { |
1387 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1388 | pkt = unpack_byte (pkt, &length); /* length */ |
1389 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1390 | { |
8a3fe4f8 | 1391 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1392 | retval = 0; |
1393 | break; | |
1394 | } | |
1395 | if (tag == TAG_THREADID) | |
1396 | { | |
1397 | if (length != 16) | |
1398 | { | |
8a3fe4f8 | 1399 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1400 | retval = 0; |
1401 | break; | |
1402 | } | |
1403 | pkt = unpack_threadid (pkt, &ref); | |
1404 | mask = mask & ~TAG_THREADID; | |
1405 | continue; | |
1406 | } | |
1407 | if (tag == TAG_EXISTS) | |
1408 | { | |
1409 | info->active = stub_unpack_int (pkt, length); | |
1410 | pkt += length; | |
1411 | mask = mask & ~(TAG_EXISTS); | |
1412 | if (length > 8) | |
1413 | { | |
8a3fe4f8 | 1414 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1415 | retval = 0; |
1416 | break; | |
1417 | } | |
1418 | continue; | |
1419 | } | |
1420 | if (tag == TAG_THREADNAME) | |
1421 | { | |
1422 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1423 | mask = mask & ~TAG_THREADNAME; | |
1424 | continue; | |
1425 | } | |
1426 | if (tag == TAG_DISPLAY) | |
1427 | { | |
1428 | pkt = unpack_string (pkt, &info->display[0], length); | |
1429 | mask = mask & ~TAG_DISPLAY; | |
1430 | continue; | |
1431 | } | |
1432 | if (tag == TAG_MOREDISPLAY) | |
1433 | { | |
1434 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1435 | mask = mask & ~TAG_MOREDISPLAY; | |
1436 | continue; | |
1437 | } | |
8a3fe4f8 | 1438 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1439 | break; /* Not a tag we know about. */ |
c906108c SS |
1440 | } |
1441 | return retval; | |
1442 | } | |
1443 | ||
1444 | static int | |
fba45db2 KB |
1445 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1446 | struct gdb_ext_thread_info *info) | |
c906108c | 1447 | { |
d01949b6 | 1448 | struct remote_state *rs = get_remote_state (); |
c906108c | 1449 | int result; |
6d820c5c | 1450 | char *threadinfo_pkt = rs->buf; |
c906108c SS |
1451 | |
1452 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1453 | putpkt (threadinfo_pkt); | |
6d820c5c | 1454 | getpkt (&rs->buf, &rs->buf_size, 0); |
23860348 MS |
1455 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, |
1456 | threadid, info); | |
c906108c SS |
1457 | return result; |
1458 | } | |
1459 | ||
c906108c SS |
1460 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1461 | ||
1462 | static char * | |
fba45db2 KB |
1463 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1464 | threadref *nextthread) | |
c906108c SS |
1465 | { |
1466 | *pkt++ = 'q'; /* info query packet */ | |
1467 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1468 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1469 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1470 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1471 | *pkt = '\0'; | |
1472 | return pkt; | |
1473 | } | |
1474 | ||
1475 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1476 | ||
1477 | static int | |
fba45db2 KB |
1478 | parse_threadlist_response (char *pkt, int result_limit, |
1479 | threadref *original_echo, threadref *resultlist, | |
1480 | int *doneflag) | |
c906108c | 1481 | { |
d01949b6 | 1482 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1483 | char *limit; |
1484 | int count, resultcount, done; | |
1485 | ||
1486 | resultcount = 0; | |
1487 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1488 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1489 | /* done parse past here */ |
c906108c SS |
1490 | pkt = unpack_byte (pkt, &count); /* count field */ |
1491 | pkt = unpack_nibble (pkt, &done); | |
1492 | /* The first threadid is the argument threadid. */ | |
1493 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1494 | while ((count-- > 0) && (pkt < limit)) | |
1495 | { | |
1496 | pkt = unpack_threadid (pkt, resultlist++); | |
1497 | if (resultcount++ >= result_limit) | |
1498 | break; | |
1499 | } | |
1500 | if (doneflag) | |
1501 | *doneflag = done; | |
1502 | return resultcount; | |
1503 | } | |
1504 | ||
1505 | static int | |
fba45db2 KB |
1506 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1507 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1508 | { |
d01949b6 | 1509 | struct remote_state *rs = get_remote_state (); |
c906108c | 1510 | static threadref echo_nextthread; |
6d820c5c | 1511 | char *threadlist_packet = rs->buf; |
c906108c SS |
1512 | int result = 1; |
1513 | ||
23860348 | 1514 | /* Trancate result limit to be smaller than the packet size. */ |
24b06219 MK |
1515 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= rs->remote_packet_size) |
1516 | result_limit = (rs->remote_packet_size / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1517 | |
6d820c5c DJ |
1518 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1519 | putpkt (rs->buf); | |
1520 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1521 | |
1522 | *result_count = | |
6d820c5c | 1523 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1524 | threadlist, done); |
1525 | ||
1526 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1527 | { | |
23860348 MS |
1528 | /* FIXME: This is a good reason to drop the packet. */ |
1529 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1530 | /* Possabilities : |
1531 | retransmit immediatly - race conditions | |
1532 | retransmit after timeout - yes | |
1533 | exit | |
1534 | wait for packet, then exit | |
1535 | */ | |
8a3fe4f8 | 1536 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1537 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1538 | } |
1539 | if (*result_count <= 0) | |
1540 | { | |
1541 | if (*done != 1) | |
1542 | { | |
8a3fe4f8 | 1543 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1544 | result = 0; |
1545 | } | |
1546 | return result; /* break; */ | |
1547 | } | |
1548 | if (*result_count > result_limit) | |
1549 | { | |
1550 | *result_count = 0; | |
8a3fe4f8 | 1551 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1552 | return 0; |
1553 | } | |
1554 | return result; | |
1555 | } | |
1556 | ||
23860348 MS |
1557 | /* This is the interface between remote and threads, remotes upper |
1558 | interface. */ | |
c906108c SS |
1559 | |
1560 | /* remote_find_new_threads retrieves the thread list and for each | |
1561 | thread in the list, looks up the thread in GDB's internal list, | |
1562 | ading the thread if it does not already exist. This involves | |
1563 | getting partial thread lists from the remote target so, polling the | |
1564 | quit_flag is required. */ | |
1565 | ||
1566 | ||
23860348 | 1567 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1568 | |
1569 | #define MAXTHREADLISTRESULTS 32 | |
1570 | ||
1571 | static int | |
fba45db2 KB |
1572 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1573 | int looplimit) | |
c906108c SS |
1574 | { |
1575 | int done, i, result_count; | |
1576 | int startflag = 1; | |
1577 | int result = 1; | |
1578 | int loopcount = 0; | |
1579 | static threadref nextthread; | |
1580 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1581 | ||
1582 | done = 0; | |
1583 | while (!done) | |
1584 | { | |
1585 | if (loopcount++ > looplimit) | |
1586 | { | |
1587 | result = 0; | |
8a3fe4f8 | 1588 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1589 | break; |
1590 | } | |
1591 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1592 | &done, &result_count, resultthreadlist)) | |
1593 | { | |
1594 | result = 0; | |
1595 | break; | |
1596 | } | |
23860348 | 1597 | /* Clear for later iterations. */ |
c906108c SS |
1598 | startflag = 0; |
1599 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1600 | if (result_count >= 1) | |
1601 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1602 | i = 0; | |
1603 | while (result_count--) | |
1604 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1605 | break; | |
1606 | } | |
1607 | return result; | |
1608 | } | |
1609 | ||
1610 | static int | |
fba45db2 | 1611 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1612 | { |
39f77062 | 1613 | ptid_t ptid; |
c906108c | 1614 | |
39f77062 KB |
1615 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1616 | ||
1617 | if (!in_thread_list (ptid)) | |
1618 | add_thread (ptid); | |
c906108c SS |
1619 | return 1; /* continue iterator */ |
1620 | } | |
1621 | ||
1622 | #define CRAZY_MAX_THREADS 1000 | |
1623 | ||
39f77062 KB |
1624 | static ptid_t |
1625 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1626 | { |
d01949b6 | 1627 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1628 | char *buf = rs->buf; |
c906108c SS |
1629 | |
1630 | putpkt ("qC"); | |
6d820c5c | 1631 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1632 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1633 | /* Use strtoul here, so we'll correctly parse values whose highest |
1634 | bit is set. The protocol carries them as a simple series of | |
1635 | hex digits; in the absence of a sign, strtol will see such | |
1636 | values as positive numbers out of range for signed 'long', and | |
1637 | return LONG_MAX to indicate an overflow. */ | |
1638 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1639 | else |
1640 | return oldpid; | |
1641 | } | |
1642 | ||
802188a7 RM |
1643 | /* Find new threads for info threads command. |
1644 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1645 | */ |
cce74817 JM |
1646 | |
1647 | static void | |
fba45db2 | 1648 | remote_find_new_threads (void) |
c906108c | 1649 | { |
c5aa993b JM |
1650 | remote_threadlist_iterator (remote_newthread_step, 0, |
1651 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1652 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1653 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1654 | } |
1655 | ||
9d1f7ab2 MS |
1656 | /* |
1657 | * Find all threads for info threads command. | |
1658 | * Uses new thread protocol contributed by Cisco. | |
1659 | * Falls back and attempts to use the older method (above) | |
1660 | * if the target doesn't respond to the new method. | |
1661 | */ | |
1662 | ||
0f71a2f6 JM |
1663 | static void |
1664 | remote_threads_info (void) | |
1665 | { | |
d01949b6 | 1666 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1667 | char *bufp; |
0f71a2f6 JM |
1668 | int tid; |
1669 | ||
1670 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1671 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1672 | |
9d1f7ab2 MS |
1673 | if (use_threadinfo_query) |
1674 | { | |
1675 | putpkt ("qfThreadInfo"); | |
6d820c5c DJ |
1676 | bufp = rs->buf; |
1677 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9d1f7ab2 | 1678 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1679 | { |
9d1f7ab2 MS |
1680 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1681 | { | |
1682 | do | |
1683 | { | |
c273b20f JB |
1684 | /* Use strtoul here, so we'll correctly parse values |
1685 | whose highest bit is set. The protocol carries | |
1686 | them as a simple series of hex digits; in the | |
1687 | absence of a sign, strtol will see such values as | |
1688 | positive numbers out of range for signed 'long', | |
1689 | and return LONG_MAX to indicate an overflow. */ | |
1690 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1691 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1692 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1693 | } |
1694 | while (*bufp++ == ','); /* comma-separated list */ | |
1695 | putpkt ("qsThreadInfo"); | |
6d820c5c DJ |
1696 | bufp = rs->buf; |
1697 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9d1f7ab2 MS |
1698 | } |
1699 | return; /* done */ | |
1700 | } | |
1701 | } | |
1702 | ||
23860348 | 1703 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1704 | use_threadinfo_query = 0; |
1705 | remote_find_new_threads (); | |
1706 | return; | |
1707 | } | |
1708 | ||
802188a7 | 1709 | /* |
9d1f7ab2 MS |
1710 | * Collect a descriptive string about the given thread. |
1711 | * The target may say anything it wants to about the thread | |
1712 | * (typically info about its blocked / runnable state, name, etc.). | |
1713 | * This string will appear in the info threads display. | |
802188a7 | 1714 | * |
9d1f7ab2 MS |
1715 | * Optional: targets are not required to implement this function. |
1716 | */ | |
1717 | ||
1718 | static char * | |
1719 | remote_threads_extra_info (struct thread_info *tp) | |
1720 | { | |
d01949b6 | 1721 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1722 | int result; |
1723 | int set; | |
1724 | threadref id; | |
1725 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1726 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1727 | int n = 0; /* position in display_buf */ |
1728 | ||
1729 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1730 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1731 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1732 | |
1733 | if (use_threadextra_query) | |
1734 | { | |
6d820c5c DJ |
1735 | char *bufp = rs->buf; |
1736 | ||
ecbc58df WZ |
1737 | xsnprintf (bufp, rs->remote_packet_size, "qThreadExtraInfo,%x", |
1738 | PIDGET (tp->ptid)); | |
9d1f7ab2 | 1739 | putpkt (bufp); |
6d820c5c | 1740 | getpkt (&rs->buf, &rs->buf_size, 0); |
9d1f7ab2 MS |
1741 | if (bufp[0] != 0) |
1742 | { | |
30559e10 | 1743 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
cfd77fa1 | 1744 | result = hex2bin (bufp, (gdb_byte *) display_buf, n); |
30559e10 | 1745 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1746 | return display_buf; |
1747 | } | |
0f71a2f6 | 1748 | } |
9d1f7ab2 MS |
1749 | |
1750 | /* If the above query fails, fall back to the old method. */ | |
1751 | use_threadextra_query = 0; | |
1752 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1753 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1754 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1755 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1756 | if (threadinfo.active) | |
0f71a2f6 | 1757 | { |
9d1f7ab2 | 1758 | if (*threadinfo.shortname) |
ecbc58df WZ |
1759 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
1760 | " Name: %s,", threadinfo.shortname); | |
9d1f7ab2 | 1761 | if (*threadinfo.display) |
ecbc58df WZ |
1762 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1763 | " State: %s,", threadinfo.display); | |
9d1f7ab2 | 1764 | if (*threadinfo.more_display) |
ecbc58df WZ |
1765 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1766 | " Priority: %s", threadinfo.more_display); | |
9d1f7ab2 MS |
1767 | |
1768 | if (n > 0) | |
c5aa993b | 1769 | { |
23860348 | 1770 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1771 | if (',' == display_buf[n-1]) |
1772 | display_buf[n-1] = ' '; | |
1773 | return display_buf; | |
c5aa993b | 1774 | } |
0f71a2f6 | 1775 | } |
9d1f7ab2 | 1776 | return NULL; |
0f71a2f6 | 1777 | } |
c906108c | 1778 | \f |
c5aa993b | 1779 | |
24b06219 | 1780 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1781 | |
1782 | static void | |
fba45db2 | 1783 | extended_remote_restart (void) |
c906108c | 1784 | { |
d01949b6 | 1785 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1786 | |
1787 | /* Send the restart command; for reasons I don't understand the | |
1788 | remote side really expects a number after the "R". */ | |
6d820c5c DJ |
1789 | xsnprintf (rs->buf, rs->remote_packet_size, "R%x", 0); |
1790 | putpkt (rs->buf); | |
c906108c SS |
1791 | |
1792 | /* Now query for status so this looks just like we restarted | |
1793 | gdbserver from scratch. */ | |
1794 | putpkt ("?"); | |
01d3a6ce | 1795 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1796 | } |
1797 | \f | |
1798 | /* Clean up connection to a remote debugger. */ | |
1799 | ||
c906108c | 1800 | static void |
fba45db2 | 1801 | remote_close (int quitting) |
c906108c SS |
1802 | { |
1803 | if (remote_desc) | |
2cd58942 | 1804 | serial_close (remote_desc); |
c906108c SS |
1805 | remote_desc = NULL; |
1806 | } | |
1807 | ||
23860348 | 1808 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1809 | |
1810 | static void | |
fba45db2 | 1811 | get_offsets (void) |
c906108c | 1812 | { |
d01949b6 | 1813 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1814 | char *buf = rs->buf; |
085dd6e6 | 1815 | char *ptr; |
c906108c SS |
1816 | int lose; |
1817 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1818 | struct section_offsets *offs; | |
1819 | ||
1820 | putpkt ("qOffsets"); | |
6d820c5c | 1821 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1822 | |
1823 | if (buf[0] == '\000') | |
1824 | return; /* Return silently. Stub doesn't support | |
23860348 | 1825 | this command. */ |
c906108c SS |
1826 | if (buf[0] == 'E') |
1827 | { | |
8a3fe4f8 | 1828 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1829 | return; |
1830 | } | |
1831 | ||
1832 | /* Pick up each field in turn. This used to be done with scanf, but | |
1833 | scanf will make trouble if CORE_ADDR size doesn't match | |
1834 | conversion directives correctly. The following code will work | |
1835 | with any size of CORE_ADDR. */ | |
1836 | text_addr = data_addr = bss_addr = 0; | |
1837 | ptr = buf; | |
1838 | lose = 0; | |
1839 | ||
1840 | if (strncmp (ptr, "Text=", 5) == 0) | |
1841 | { | |
1842 | ptr += 5; | |
1843 | /* Don't use strtol, could lose on big values. */ | |
1844 | while (*ptr && *ptr != ';') | |
1845 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1846 | } | |
1847 | else | |
1848 | lose = 1; | |
1849 | ||
1850 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1851 | { | |
1852 | ptr += 6; | |
1853 | while (*ptr && *ptr != ';') | |
1854 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1855 | } | |
1856 | else | |
1857 | lose = 1; | |
1858 | ||
1859 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1860 | { | |
1861 | ptr += 5; | |
1862 | while (*ptr && *ptr != ';') | |
1863 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1864 | } | |
1865 | else | |
1866 | lose = 1; | |
1867 | ||
1868 | if (lose) | |
8a3fe4f8 | 1869 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
1870 | |
1871 | if (symfile_objfile == NULL) | |
1872 | return; | |
1873 | ||
802188a7 | 1874 | offs = ((struct section_offsets *) |
a39a16c4 | 1875 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1876 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1877 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1878 | |
a4c8257b | 1879 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1880 | |
1881 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1882 | because that's what nlmconv does now. The real solution requires changes | |
1883 | to the stub and remote.c that I don't have time to do right now. */ | |
1884 | ||
a4c8257b EZ |
1885 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1886 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1887 | |
1888 | objfile_relocate (symfile_objfile, offs); | |
1889 | } | |
1890 | ||
1891 | /* Stub for catch_errors. */ | |
1892 | ||
0f71a2f6 | 1893 | static int |
36918e70 | 1894 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 1895 | { |
23860348 | 1896 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
1897 | /* NOTE: Return something >=0. A -ve value is reserved for |
1898 | catch_exceptions. */ | |
0f71a2f6 JM |
1899 | return 1; |
1900 | } | |
1901 | ||
9cbc821d | 1902 | static void |
36918e70 | 1903 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 1904 | { |
23860348 | 1905 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
1906 | |
1907 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 1908 | serial_write (remote_desc, "+", 1); |
c906108c SS |
1909 | |
1910 | /* Let the stub know that we want it to return the thread. */ | |
1911 | set_thread (-1, 0); | |
1912 | ||
39f77062 | 1913 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 1914 | |
23860348 | 1915 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 1916 | |
23860348 | 1917 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 1918 | immediate_quit--; |
c906108c | 1919 | |
9cbc821d | 1920 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
1921 | } |
1922 | ||
1923 | /* Open a connection to a remote debugger. | |
1924 | NAME is the filename used for communication. */ | |
1925 | ||
1926 | static void | |
fba45db2 | 1927 | remote_open (char *name, int from_tty) |
c906108c | 1928 | { |
92d1e331 | 1929 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
1930 | } |
1931 | ||
23860348 | 1932 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 1933 | static void |
fba45db2 | 1934 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 1935 | { |
92d1e331 | 1936 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
1937 | } |
1938 | ||
c906108c SS |
1939 | /* Open a connection to a remote debugger using the extended |
1940 | remote gdb protocol. NAME is the filename used for communication. */ | |
1941 | ||
1942 | static void | |
fba45db2 | 1943 | extended_remote_open (char *name, int from_tty) |
c906108c | 1944 | { |
92d1e331 DJ |
1945 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
1946 | 0 /* async_p */); | |
c906108c SS |
1947 | } |
1948 | ||
23860348 | 1949 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 1950 | static void |
fba45db2 | 1951 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 1952 | { |
92d1e331 DJ |
1953 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
1954 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
1955 | } |
1956 | ||
c906108c SS |
1957 | /* Generic code for opening a connection to a remote target. */ |
1958 | ||
d471ea57 AC |
1959 | static void |
1960 | init_all_packet_configs (void) | |
1961 | { | |
1962 | int i; | |
444abaca DJ |
1963 | for (i = 0; i < PACKET_MAX; i++) |
1964 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
1965 | } |
1966 | ||
23860348 | 1967 | /* Symbol look-up. */ |
dc8acb97 MS |
1968 | |
1969 | static void | |
1970 | remote_check_symbols (struct objfile *objfile) | |
1971 | { | |
d01949b6 | 1972 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
1973 | char *msg, *reply, *tmp; |
1974 | struct minimal_symbol *sym; | |
1975 | int end; | |
1976 | ||
444abaca | 1977 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
1978 | return; |
1979 | ||
6d820c5c DJ |
1980 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
1981 | because we need both at the same time. */ | |
1982 | msg = alloca (rs->remote_packet_size); | |
1983 | ||
1984 | reply = rs->buf; | |
dc8acb97 | 1985 | |
23860348 | 1986 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
1987 | |
1988 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
1989 | getpkt (&rs->buf, &rs->buf_size, 0); |
1990 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 MS |
1991 | |
1992 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
1993 | { | |
1994 | tmp = &reply[8]; | |
cfd77fa1 | 1995 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
1996 | msg[end] = '\0'; |
1997 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
1998 | if (sym == NULL) | |
ecbc58df | 1999 | xsnprintf (msg, rs->remote_packet_size, "qSymbol::%s", &reply[8]); |
dc8acb97 | 2000 | else |
ecbc58df WZ |
2001 | xsnprintf (msg, rs->remote_packet_size, "qSymbol:%s:%s", |
2002 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
2003 | &reply[8]); | |
dc8acb97 | 2004 | putpkt (msg); |
6d820c5c | 2005 | getpkt (&rs->buf, &rs->buf_size, 0); |
dc8acb97 MS |
2006 | } |
2007 | } | |
2008 | ||
9db8d71f DJ |
2009 | static struct serial * |
2010 | remote_serial_open (char *name) | |
2011 | { | |
2012 | static int udp_warning = 0; | |
2013 | ||
2014 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2015 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2016 | serial connection is reliable and not the serial connection promising | |
2017 | to be. */ | |
2018 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2019 | { | |
8a3fe4f8 AC |
2020 | warning (_("\ |
2021 | The remote protocol may be unreliable over UDP.\n\ | |
2022 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2023 | udp_warning = 1; |
2024 | } | |
2025 | ||
2026 | return serial_open (name); | |
2027 | } | |
2028 | ||
c906108c | 2029 | static void |
fba45db2 | 2030 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2031 | int extended_p, int async_p) |
c906108c | 2032 | { |
d01949b6 | 2033 | struct remote_state *rs = get_remote_state (); |
c906108c | 2034 | if (name == 0) |
8a3fe4f8 | 2035 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2036 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2037 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2038 | |
23860348 | 2039 | /* See FIXME above. */ |
92d1e331 DJ |
2040 | if (!async_p) |
2041 | wait_forever_enabled_p = 1; | |
6426a772 | 2042 | |
00cac895 DJ |
2043 | reopen_exec_file (); |
2044 | reread_symbols (); | |
2045 | ||
c906108c SS |
2046 | target_preopen (from_tty); |
2047 | ||
2048 | unpush_target (target); | |
2049 | ||
9db8d71f | 2050 | remote_desc = remote_serial_open (name); |
c906108c SS |
2051 | if (!remote_desc) |
2052 | perror_with_name (name); | |
2053 | ||
2054 | if (baud_rate != -1) | |
2055 | { | |
2cd58942 | 2056 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2057 | { |
9b74d5d3 KB |
2058 | /* The requested speed could not be set. Error out to |
2059 | top level after closing remote_desc. Take care to | |
2060 | set remote_desc to NULL to avoid closing remote_desc | |
2061 | more than once. */ | |
2cd58942 | 2062 | serial_close (remote_desc); |
9b74d5d3 | 2063 | remote_desc = NULL; |
c906108c SS |
2064 | perror_with_name (name); |
2065 | } | |
2066 | } | |
2067 | ||
2cd58942 | 2068 | serial_raw (remote_desc); |
c906108c SS |
2069 | |
2070 | /* If there is something sitting in the buffer we might take it as a | |
2071 | response to a command, which would be bad. */ | |
2cd58942 | 2072 | serial_flush_input (remote_desc); |
c906108c SS |
2073 | |
2074 | if (from_tty) | |
2075 | { | |
2076 | puts_filtered ("Remote debugging using "); | |
2077 | puts_filtered (name); | |
2078 | puts_filtered ("\n"); | |
2079 | } | |
23860348 | 2080 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2081 | |
d471ea57 | 2082 | init_all_packet_configs (); |
802188a7 | 2083 | |
c5aa993b | 2084 | general_thread = -2; |
cce74817 | 2085 | continue_thread = -2; |
c906108c | 2086 | |
9d1f7ab2 MS |
2087 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2088 | use_threadinfo_query = 1; | |
2089 | use_threadextra_query = 1; | |
2090 | ||
c906108c SS |
2091 | /* Without this, some commands which require an active target (such |
2092 | as kill) won't work. This variable serves (at least) double duty | |
2093 | as both the pid of the target process (if it has such), and as a | |
2094 | flag indicating that a target is active. These functions should | |
2095 | be split out into seperate variables, especially since GDB will | |
2096 | someday have a notion of debugging several processes. */ | |
2097 | ||
39f77062 | 2098 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2099 | |
2100 | if (async_p) | |
2101 | { | |
23860348 | 2102 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2103 | remote_async_terminal_ours_p = 1; |
2104 | ||
2105 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2106 | assumed that the target is already ready and able to respond to | |
2107 | requests. Unfortunately remote_start_remote() eventually calls | |
2108 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2109 | around this. Eventually a mechanism that allows | |
2110 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2111 | implemented. */ |
92d1e331 DJ |
2112 | wait_forever_enabled_p = 0; |
2113 | } | |
2114 | ||
23860348 | 2115 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2116 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2117 | |
36918e70 | 2118 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2119 | target (we'd otherwise be in an inconsistent state) and then |
2120 | propogate the error on up the exception chain. This ensures that | |
2121 | the caller doesn't stumble along blindly assuming that the | |
2122 | function succeeded. The CLI doesn't have this problem but other | |
2123 | UI's, such as MI do. | |
36918e70 AC |
2124 | |
2125 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2126 | this function should return an error indication letting the | |
ce2826aa | 2127 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2128 | ``target remote'' is directly wired to this function making that |
2129 | impossible. On a positive note, the CLI side of this problem has | |
2130 | been fixed - the function set_cmd_context() makes it possible for | |
2131 | all the ``target ....'' commands to share a common callback | |
2132 | function. See cli-dump.c. */ | |
109c3e39 AC |
2133 | { |
2134 | struct gdb_exception ex | |
2135 | = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); | |
2136 | if (ex.reason < 0) | |
2137 | { | |
2138 | pop_target (); | |
2139 | if (async_p) | |
2140 | wait_forever_enabled_p = 1; | |
2141 | throw_exception (ex); | |
2142 | } | |
2143 | } | |
c906108c | 2144 | |
92d1e331 DJ |
2145 | if (async_p) |
2146 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2147 | |
2148 | if (extended_p) | |
43ff13b4 | 2149 | { |
6240bebf | 2150 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2151 | putpkt ("!"); |
6d820c5c | 2152 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2153 | } |
a77053c2 | 2154 | |
9353355f | 2155 | post_create_inferior (¤t_target, from_tty); |
f78f6cf1 | 2156 | |
23860348 | 2157 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2158 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2159 | } |
2160 | ||
c906108c SS |
2161 | /* This takes a program previously attached to and detaches it. After |
2162 | this is done, GDB can be used to debug some other program. We | |
2163 | better not have left any breakpoints in the target program or it'll | |
2164 | die when it hits one. */ | |
2165 | ||
2166 | static void | |
fba45db2 | 2167 | remote_detach (char *args, int from_tty) |
c906108c | 2168 | { |
d01949b6 | 2169 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2170 | |
2171 | if (args) | |
8a3fe4f8 | 2172 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2173 | |
2174 | /* Tell the remote target to detach. */ | |
6d820c5c DJ |
2175 | strcpy (rs->buf, "D"); |
2176 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 2177 | |
23860348 | 2178 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2179 | if (target_is_async_p ()) |
2180 | serial_async (remote_desc, NULL, 0); | |
2181 | ||
cca728d0 | 2182 | target_mourn_inferior (); |
c906108c SS |
2183 | if (from_tty) |
2184 | puts_filtered ("Ending remote debugging.\n"); | |
2185 | } | |
2186 | ||
6ad8ae5c DJ |
2187 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2188 | ||
43ff13b4 | 2189 | static void |
597320e7 | 2190 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2191 | { |
43ff13b4 | 2192 | if (args) |
8a3fe4f8 | 2193 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2194 | |
23860348 | 2195 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2196 | if (target_is_async_p ()) |
2cd58942 | 2197 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2198 | |
cca728d0 | 2199 | target_mourn_inferior (); |
43ff13b4 JM |
2200 | if (from_tty) |
2201 | puts_filtered ("Ending remote debugging.\n"); | |
2202 | } | |
2203 | ||
c906108c SS |
2204 | /* Convert hex digit A to a number. */ |
2205 | ||
30559e10 | 2206 | static int |
fba45db2 | 2207 | fromhex (int a) |
c906108c SS |
2208 | { |
2209 | if (a >= '0' && a <= '9') | |
2210 | return a - '0'; | |
2211 | else if (a >= 'a' && a <= 'f') | |
2212 | return a - 'a' + 10; | |
2213 | else if (a >= 'A' && a <= 'F') | |
2214 | return a - 'A' + 10; | |
c5aa993b | 2215 | else |
8a3fe4f8 | 2216 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2217 | } |
2218 | ||
30559e10 | 2219 | static int |
cfd77fa1 | 2220 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2221 | { |
2222 | int i; | |
2223 | ||
30559e10 MS |
2224 | for (i = 0; i < count; i++) |
2225 | { | |
2226 | if (hex[0] == 0 || hex[1] == 0) | |
2227 | { | |
2228 | /* Hex string is short, or of uneven length. | |
23860348 | 2229 | Return the count that has been converted so far. */ |
30559e10 MS |
2230 | return i; |
2231 | } | |
2232 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2233 | hex += 2; | |
2234 | } | |
2235 | return i; | |
2236 | } | |
2237 | ||
c906108c SS |
2238 | /* Convert number NIB to a hex digit. */ |
2239 | ||
2240 | static int | |
fba45db2 | 2241 | tohex (int nib) |
c906108c SS |
2242 | { |
2243 | if (nib < 10) | |
c5aa993b | 2244 | return '0' + nib; |
c906108c | 2245 | else |
c5aa993b | 2246 | return 'a' + nib - 10; |
c906108c | 2247 | } |
30559e10 MS |
2248 | |
2249 | static int | |
cfd77fa1 | 2250 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2251 | { |
2252 | int i; | |
23860348 | 2253 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2254 | if (count == 0) |
cfd77fa1 | 2255 | count = strlen ((char *) bin); |
30559e10 MS |
2256 | |
2257 | for (i = 0; i < count; i++) | |
2258 | { | |
2259 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2260 | *hex++ = tohex (*bin++ & 0xf); | |
2261 | } | |
2262 | *hex = 0; | |
2263 | return i; | |
2264 | } | |
c906108c | 2265 | \f |
506fb367 DJ |
2266 | /* Check for the availability of vCont. This function should also check |
2267 | the response. */ | |
c906108c SS |
2268 | |
2269 | static void | |
6d820c5c | 2270 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2271 | { |
6d820c5c DJ |
2272 | char *buf = rs->buf; |
2273 | ||
506fb367 DJ |
2274 | strcpy (buf, "vCont?"); |
2275 | putpkt (buf); | |
6d820c5c | 2276 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2277 | |
506fb367 DJ |
2278 | /* Make sure that the features we assume are supported. */ |
2279 | if (strncmp (buf, "vCont", 5) == 0) | |
2280 | { | |
2281 | char *p = &buf[5]; | |
2282 | int support_s, support_S, support_c, support_C; | |
2283 | ||
2284 | support_s = 0; | |
2285 | support_S = 0; | |
2286 | support_c = 0; | |
2287 | support_C = 0; | |
2288 | while (p && *p == ';') | |
2289 | { | |
2290 | p++; | |
2291 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2292 | support_s = 1; | |
2293 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2294 | support_S = 1; | |
2295 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2296 | support_c = 1; | |
2297 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2298 | support_C = 1; | |
2299 | ||
2300 | p = strchr (p, ';'); | |
2301 | } | |
c906108c | 2302 | |
506fb367 DJ |
2303 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2304 | BUF will make packet_ok disable the packet. */ | |
2305 | if (!support_s || !support_S || !support_c || !support_C) | |
2306 | buf[0] = 0; | |
2307 | } | |
c906108c | 2308 | |
444abaca | 2309 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2310 | } |
c906108c | 2311 | |
506fb367 DJ |
2312 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2313 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2314 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2315 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2316 | signalled is given in the global INFERIOR_PTID. This function returns | |
2317 | non-zero iff it resumes the inferior. | |
44eaed12 | 2318 | |
506fb367 DJ |
2319 | This function issues a strict subset of all possible vCont commands at the |
2320 | moment. */ | |
44eaed12 | 2321 | |
506fb367 DJ |
2322 | static int |
2323 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2324 | { | |
2325 | struct remote_state *rs = get_remote_state (); | |
2326 | int pid = PIDGET (ptid); | |
2963ee1d | 2327 | char *buf = NULL, *outbuf; |
506fb367 | 2328 | struct cleanup *old_cleanup; |
44eaed12 | 2329 | |
444abaca | 2330 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2331 | remote_vcont_probe (rs); |
44eaed12 | 2332 | |
444abaca | 2333 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2334 | return 0; |
44eaed12 | 2335 | |
506fb367 DJ |
2336 | /* If we could generate a wider range of packets, we'd have to worry |
2337 | about overflowing BUF. Should there be a generic | |
2338 | "multi-part-packet" packet? */ | |
2339 | ||
2340 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2341 | { |
506fb367 DJ |
2342 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2343 | don't have any PID numbers the inferior will understand. Make sure | |
2344 | to only send forms that do not specify a PID. */ | |
2345 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2346 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2347 | else if (step) |
2963ee1d | 2348 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2349 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2350 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2351 | else |
2963ee1d | 2352 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2353 | } |
2354 | else if (pid == -1) | |
2355 | { | |
2356 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2357 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2358 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2359 | PIDGET (inferior_ptid)); | |
506fb367 | 2360 | else if (step) |
2963ee1d | 2361 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2362 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2363 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2364 | PIDGET (inferior_ptid)); | |
506fb367 | 2365 | else |
2963ee1d | 2366 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2367 | } |
2368 | else | |
506fb367 DJ |
2369 | { |
2370 | /* Scheduler locking; resume only PTID. */ | |
2371 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2372 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2373 | else if (step) |
2963ee1d | 2374 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2375 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2376 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2377 | else |
2963ee1d | 2378 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2379 | } |
c906108c | 2380 | |
2963ee1d | 2381 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
6d820c5c | 2382 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2383 | |
2384 | putpkt (outbuf); | |
506fb367 DJ |
2385 | |
2386 | do_cleanups (old_cleanup); | |
2387 | ||
2388 | return 1; | |
c906108c | 2389 | } |
43ff13b4 | 2390 | |
506fb367 DJ |
2391 | /* Tell the remote machine to resume. */ |
2392 | ||
2393 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2394 | ||
2395 | static int last_sent_step; | |
2396 | ||
43ff13b4 | 2397 | static void |
506fb367 | 2398 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2399 | { |
d01949b6 | 2400 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 2401 | char *buf = rs->buf; |
39f77062 | 2402 | int pid = PIDGET (ptid); |
43ff13b4 | 2403 | |
43ff13b4 JM |
2404 | last_sent_signal = siggnal; |
2405 | last_sent_step = step; | |
2406 | ||
2407 | /* A hook for when we need to do something at the last moment before | |
2408 | resumption. */ | |
9a4105ab AC |
2409 | if (deprecated_target_resume_hook) |
2410 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2411 | |
506fb367 DJ |
2412 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2413 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2414 | return; | |
2415 | ||
2416 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2417 | if (pid == -1) | |
23860348 | 2418 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2419 | else |
23860348 | 2420 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2421 | |
43ff13b4 JM |
2422 | if (siggnal != TARGET_SIGNAL_0) |
2423 | { | |
2424 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2425 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2426 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2427 | buf[3] = '\0'; |
2428 | } | |
2429 | else | |
c5aa993b | 2430 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2431 | |
44eaed12 | 2432 | putpkt (buf); |
506fb367 DJ |
2433 | } |
2434 | ||
23860348 | 2435 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2436 | static void |
2437 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2438 | { | |
2439 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2440 | |
2acceee2 JM |
2441 | /* We are about to start executing the inferior, let's register it |
2442 | with the event loop. NOTE: this is the one place where all the | |
2443 | execution commands end up. We could alternatively do this in each | |
23860348 | 2444 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2445 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2446 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2447 | NOT asynchronously. */ |
362646f5 | 2448 | if (target_can_async_p ()) |
2acceee2 | 2449 | target_async (inferior_event_handler, 0); |
23860348 | 2450 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2451 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2452 | this? Instead, should the client of target just assume (for | |
2453 | async targets) that the target is going to start executing? Is | |
2454 | this information already found in the continuation block? */ | |
ed9a39eb | 2455 | if (target_is_async_p ()) |
2acceee2 | 2456 | target_executing = 1; |
43ff13b4 | 2457 | } |
c906108c | 2458 | \f |
43ff13b4 JM |
2459 | |
2460 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2461 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2462 | static void |
fba45db2 | 2463 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2464 | { |
c5aa993b | 2465 | sigint_remote_token = |
43ff13b4 JM |
2466 | create_async_signal_handler (async_remote_interrupt, NULL); |
2467 | signal (SIGINT, handle_remote_sigint); | |
2468 | } | |
2469 | ||
23860348 | 2470 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2471 | static void |
fba45db2 | 2472 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2473 | { |
2474 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2475 | sigint_remote_twice_token = |
43ff13b4 JM |
2476 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2477 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2478 | } | |
2479 | ||
2480 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2481 | sent once. It will take effect the second time that the user sends | |
23860348 | 2482 | a ^C. */ |
43ff13b4 | 2483 | static void |
fba45db2 | 2484 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2485 | { |
2486 | signal (sig, handle_sigint); | |
c5aa993b | 2487 | sigint_remote_twice_token = |
2df3850c | 2488 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2489 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2490 | } | |
2491 | ||
6426a772 | 2492 | /* Perform the real interruption of the target execution, in response |
23860348 | 2493 | to a ^C. */ |
c5aa993b | 2494 | static void |
fba45db2 | 2495 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2496 | { |
2497 | if (remote_debug) | |
2498 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2499 | ||
2500 | target_stop (); | |
2501 | } | |
2502 | ||
2503 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2504 | up on the target alltogether. */ |
2df3850c | 2505 | void |
fba45db2 | 2506 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2507 | { |
2df3850c JM |
2508 | if (remote_debug) |
2509 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2510 | /* Do something only if the target was not killed by the previous |
23860348 | 2511 | cntl-C. */ |
6426a772 JM |
2512 | if (target_executing) |
2513 | { | |
2514 | interrupt_query (); | |
2515 | signal (SIGINT, handle_remote_sigint); | |
2516 | } | |
43ff13b4 JM |
2517 | } |
2518 | ||
2519 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2520 | stopped. */ |
6426a772 JM |
2521 | static void |
2522 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2523 | { |
2524 | signal (SIGINT, handle_sigint); | |
2525 | if (sigint_remote_twice_token) | |
23860348 MS |
2526 | delete_async_signal_handler ((struct async_signal_handler **) |
2527 | &sigint_remote_twice_token); | |
43ff13b4 | 2528 | if (sigint_remote_token) |
23860348 MS |
2529 | delete_async_signal_handler ((struct async_signal_handler **) |
2530 | &sigint_remote_token); | |
43ff13b4 JM |
2531 | } |
2532 | ||
c906108c SS |
2533 | /* Send ^C to target to halt it. Target will respond, and send us a |
2534 | packet. */ | |
507f3c78 | 2535 | static void (*ofunc) (int); |
c906108c | 2536 | |
7a292a7a SS |
2537 | /* The command line interface's stop routine. This function is installed |
2538 | as a signal handler for SIGINT. The first time a user requests a | |
2539 | stop, we call remote_stop to send a break or ^C. If there is no | |
2540 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2541 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2542 | static void |
fba45db2 | 2543 | remote_interrupt (int signo) |
c906108c | 2544 | { |
23860348 | 2545 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2546 | signal (signo, remote_interrupt_twice); |
2547 | ||
2548 | if (remote_debug) | |
0f71a2f6 | 2549 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2550 | |
2551 | target_stop (); | |
2552 | } | |
2553 | ||
2554 | /* The user typed ^C twice. */ | |
2555 | ||
2556 | static void | |
fba45db2 | 2557 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2558 | { |
2559 | signal (signo, ofunc); | |
2560 | interrupt_query (); | |
c906108c SS |
2561 | signal (signo, remote_interrupt); |
2562 | } | |
7a292a7a SS |
2563 | |
2564 | /* This is the generic stop called via the target vector. When a target | |
2565 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2566 | will eventually end up here. */ |
c906108c | 2567 | static void |
fba45db2 | 2568 | remote_stop (void) |
c906108c | 2569 | { |
7a292a7a SS |
2570 | /* Send a break or a ^C, depending on user preference. */ |
2571 | if (remote_debug) | |
0f71a2f6 | 2572 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2573 | |
7a292a7a | 2574 | if (remote_break) |
2cd58942 | 2575 | serial_send_break (remote_desc); |
c906108c | 2576 | else |
2cd58942 | 2577 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2578 | } |
2579 | ||
2580 | /* Ask the user what to do when an interrupt is received. */ | |
2581 | ||
2582 | static void | |
fba45db2 | 2583 | interrupt_query (void) |
c906108c SS |
2584 | { |
2585 | target_terminal_ours (); | |
2586 | ||
2587 | if (query ("Interrupted while waiting for the program.\n\ | |
2588 | Give up (and stop debugging it)? ")) | |
2589 | { | |
2590 | target_mourn_inferior (); | |
315a522e | 2591 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2592 | } |
2593 | ||
2594 | target_terminal_inferior (); | |
2595 | } | |
2596 | ||
6426a772 JM |
2597 | /* Enable/disable target terminal ownership. Most targets can use |
2598 | terminal groups to control terminal ownership. Remote targets are | |
2599 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2600 | is required. */ |
6426a772 JM |
2601 | |
2602 | static void | |
2603 | remote_async_terminal_inferior (void) | |
2604 | { | |
2605 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2606 | sync_execution here. This function should only be called when | |
2607 | GDB is resuming the inferior in the forground. A background | |
2608 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2609 | consequently should not call this code. */ |
6426a772 JM |
2610 | if (!sync_execution) |
2611 | return; | |
2612 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2613 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2614 | to an asynchronous target with a synchronous command calls this | |
2615 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2616 | stops trying to transfer the terminal to the target when it | |
2617 | shouldn't this guard can go away. */ | |
2618 | if (!remote_async_terminal_ours_p) | |
2619 | return; | |
2620 | delete_file_handler (input_fd); | |
2621 | remote_async_terminal_ours_p = 0; | |
2622 | initialize_sigint_signal_handler (); | |
2623 | /* NOTE: At this point we could also register our selves as the | |
2624 | recipient of all input. Any characters typed could then be | |
23860348 | 2625 | passed on down to the target. */ |
6426a772 JM |
2626 | } |
2627 | ||
2628 | static void | |
2629 | remote_async_terminal_ours (void) | |
2630 | { | |
23860348 | 2631 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2632 | if (!sync_execution) |
2633 | return; | |
23860348 | 2634 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2635 | if (remote_async_terminal_ours_p) |
2636 | return; | |
2637 | cleanup_sigint_signal_handler (NULL); | |
2638 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2639 | remote_async_terminal_ours_p = 1; | |
2640 | } | |
2641 | ||
c906108c SS |
2642 | /* If nonzero, ignore the next kill. */ |
2643 | ||
2644 | int kill_kludge; | |
2645 | ||
2646 | void | |
917317f4 | 2647 | remote_console_output (char *msg) |
c906108c SS |
2648 | { |
2649 | char *p; | |
2650 | ||
c5aa993b | 2651 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2652 | { |
2653 | char tb[2]; | |
2654 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2655 | tb[0] = c; | |
2656 | tb[1] = 0; | |
43ff13b4 | 2657 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2658 | } |
917317f4 | 2659 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2660 | } |
2661 | ||
0f71a2f6 JM |
2662 | /* Wait until the remote machine stops, then return, |
2663 | storing status in STATUS just as `wait' would. | |
802188a7 | 2664 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2665 | remote OS, is the thread-id. */ |
c906108c | 2666 | |
39f77062 KB |
2667 | static ptid_t |
2668 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2669 | { |
d01949b6 | 2670 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 2671 | char *buf = rs->buf; |
b2dd6311 | 2672 | ULONGEST thread_num = -1; |
3c3bea1c | 2673 | ULONGEST addr; |
c906108c SS |
2674 | |
2675 | status->kind = TARGET_WAITKIND_EXITED; | |
2676 | status->value.integer = 0; | |
2677 | ||
2678 | while (1) | |
2679 | { | |
cfd77fa1 | 2680 | char *p; |
c906108c | 2681 | |
c906108c | 2682 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 2683 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
2684 | signal (SIGINT, ofunc); |
2685 | ||
2686 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2687 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2688 | if (deprecated_target_wait_loop_hook) |
2689 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2690 | |
3c3bea1c GS |
2691 | remote_stopped_by_watchpoint_p = 0; |
2692 | ||
c906108c SS |
2693 | switch (buf[0]) |
2694 | { | |
23860348 | 2695 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2696 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 2697 | continue; |
23860348 | 2698 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2699 | remote_fileio_request (buf); |
2700 | continue; | |
23860348 | 2701 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 2702 | { |
cfd77fa1 | 2703 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 2704 | |
23860348 | 2705 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 2706 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2707 | ss = signal number |
2708 | n... = register number | |
2709 | r... = register contents | |
2710 | */ | |
c906108c SS |
2711 | p = &buf[3]; /* after Txx */ |
2712 | ||
2713 | while (*p) | |
2714 | { | |
cfd77fa1 | 2715 | char *p1; |
c906108c | 2716 | char *p_temp; |
97345198 | 2717 | int fieldsize; |
3c3bea1c GS |
2718 | LONGEST pnum = 0; |
2719 | ||
23860348 MS |
2720 | /* If the packet contains a register number save it in |
2721 | pnum and set p1 to point to the character following | |
2722 | it. Otherwise p1 points to p. */ | |
c906108c | 2723 | |
23860348 MS |
2724 | /* If this packet is an awatch packet, don't parse the |
2725 | 'a' as a register number. */ | |
3c3bea1c GS |
2726 | |
2727 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2728 | { | |
2729 | /* Read the ``P'' register number. */ | |
2730 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2731 | p1 = p_temp; |
3c3bea1c | 2732 | } |
802188a7 | 2733 | else |
3c3bea1c | 2734 | p1 = p; |
c906108c | 2735 | |
23860348 | 2736 | if (p1 == p) /* No register number present here. */ |
c906108c | 2737 | { |
cfd77fa1 | 2738 | p1 = strchr (p, ':'); |
c906108c | 2739 | if (p1 == NULL) |
670aa98f | 2740 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 2741 | Packet: '%s'\n"), |
670aa98f | 2742 | p, buf); |
3c3bea1c | 2743 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2744 | { |
2745 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2746 | record_currthread (thread_num); | |
cfd77fa1 | 2747 | p = p_temp; |
c906108c | 2748 | } |
3c3bea1c GS |
2749 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2750 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2751 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2752 | { | |
2753 | remote_stopped_by_watchpoint_p = 1; | |
2754 | p = unpack_varlen_hex (++p1, &addr); | |
2755 | remote_watch_data_address = (CORE_ADDR)addr; | |
2756 | } | |
2757 | else | |
2758 | { | |
2759 | /* Silently skip unknown optional info. */ | |
2760 | p_temp = strchr (p1 + 1, ';'); | |
2761 | if (p_temp) | |
cfd77fa1 | 2762 | p = p_temp; |
3c3bea1c | 2763 | } |
c906108c SS |
2764 | } |
2765 | else | |
2766 | { | |
ad10f812 | 2767 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2768 | p = p1; |
2769 | ||
2770 | if (*p++ != ':') | |
8a3fe4f8 AC |
2771 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2772 | Packet: '%s'\n"), | |
3fcb8548 | 2773 | p, buf); |
c906108c | 2774 | |
ad10f812 | 2775 | if (reg == NULL) |
8a3fe4f8 AC |
2776 | error (_("Remote sent bad register number %s: %s\n\ |
2777 | Packet: '%s'\n"), | |
3fcb8548 | 2778 | phex_nz (pnum, 0), p, buf); |
c906108c | 2779 | |
cfd77fa1 | 2780 | fieldsize = hex2bin (p, regs, |
23860348 MS |
2781 | register_size (current_gdbarch, |
2782 | reg->regnum)); | |
97345198 | 2783 | p += 2 * fieldsize; |
23860348 MS |
2784 | if (fieldsize < register_size (current_gdbarch, |
2785 | reg->regnum)) | |
8a3fe4f8 | 2786 | warning (_("Remote reply is too short: %s"), buf); |
23860348 MS |
2787 | regcache_raw_supply (current_regcache, |
2788 | reg->regnum, regs); | |
c906108c SS |
2789 | } |
2790 | ||
2791 | if (*p++ != ';') | |
8a3fe4f8 | 2792 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 2793 | buf, p); |
c906108c SS |
2794 | } |
2795 | } | |
2796 | /* fall through */ | |
23860348 | 2797 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
2798 | status->kind = TARGET_WAITKIND_STOPPED; |
2799 | status->value.sig = (enum target_signal) | |
2800 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2801 | ||
0f71a2f6 JM |
2802 | if (buf[3] == 'p') |
2803 | { | |
0f71a2f6 JM |
2804 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2805 | record_currthread (thread_num); | |
2806 | } | |
c906108c | 2807 | goto got_status; |
23860348 | 2808 | case 'W': /* Target exited. */ |
c906108c SS |
2809 | { |
2810 | /* The remote process exited. */ | |
2811 | status->kind = TARGET_WAITKIND_EXITED; | |
2812 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2813 | goto got_status; | |
2814 | } | |
2815 | case 'X': | |
2816 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2817 | status->value.sig = (enum target_signal) | |
2818 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2819 | kill_kludge = 1; | |
2820 | ||
2821 | goto got_status; | |
23860348 | 2822 | case 'O': /* Console output. */ |
c906108c SS |
2823 | remote_console_output (buf + 1); |
2824 | continue; | |
2825 | case '\0': | |
2826 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2827 | { | |
2828 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2829 | the remote system doesn't support it. */ |
c906108c SS |
2830 | target_terminal_ours_for_output (); |
2831 | printf_filtered | |
2832 | ("Can't send signals to this remote system. %s not sent.\n", | |
2833 | target_signal_to_name (last_sent_signal)); | |
2834 | last_sent_signal = TARGET_SIGNAL_0; | |
2835 | target_terminal_inferior (); | |
2836 | ||
2837 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2838 | putpkt ((char *) buf); | |
2839 | continue; | |
2840 | } | |
2841 | /* else fallthrough */ | |
2842 | default: | |
8a3fe4f8 | 2843 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
2844 | continue; |
2845 | } | |
2846 | } | |
c5aa993b | 2847 | got_status: |
c906108c SS |
2848 | if (thread_num != -1) |
2849 | { | |
39f77062 | 2850 | return pid_to_ptid (thread_num); |
c906108c | 2851 | } |
39f77062 | 2852 | return inferior_ptid; |
c906108c SS |
2853 | } |
2854 | ||
23860348 | 2855 | /* Async version of remote_wait. */ |
39f77062 KB |
2856 | static ptid_t |
2857 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 2858 | { |
d01949b6 | 2859 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 2860 | char *buf = rs->buf; |
b2dd6311 | 2861 | ULONGEST thread_num = -1; |
3c3bea1c | 2862 | ULONGEST addr; |
43ff13b4 JM |
2863 | |
2864 | status->kind = TARGET_WAITKIND_EXITED; | |
2865 | status->value.integer = 0; | |
2866 | ||
3c3bea1c GS |
2867 | remote_stopped_by_watchpoint_p = 0; |
2868 | ||
43ff13b4 JM |
2869 | while (1) |
2870 | { | |
cfd77fa1 | 2871 | char *p; |
c5aa993b | 2872 | |
ed9a39eb | 2873 | if (!target_is_async_p ()) |
43ff13b4 | 2874 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2875 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2876 | _never_ wait for ever -> test on target_is_async_p(). | |
2877 | However, before we do that we need to ensure that the caller | |
23860348 | 2878 | knows how to take the target into/out of async mode. */ |
6d820c5c | 2879 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 2880 | if (!target_is_async_p ()) |
43ff13b4 JM |
2881 | signal (SIGINT, ofunc); |
2882 | ||
2883 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2884 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2885 | if (deprecated_target_wait_loop_hook) |
2886 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
2887 | |
2888 | switch (buf[0]) | |
2889 | { | |
23860348 | 2890 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2891 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 2892 | continue; |
23860348 | 2893 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2894 | remote_fileio_request (buf); |
2895 | continue; | |
23860348 | 2896 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 2897 | { |
cfd77fa1 | 2898 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 2899 | |
23860348 | 2900 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 2901 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2902 | ss = signal number |
2903 | n... = register number | |
2904 | r... = register contents | |
2905 | */ | |
43ff13b4 JM |
2906 | p = &buf[3]; /* after Txx */ |
2907 | ||
2908 | while (*p) | |
2909 | { | |
cfd77fa1 | 2910 | char *p1; |
43ff13b4 | 2911 | char *p_temp; |
6c3f2dbf | 2912 | int fieldsize; |
3c3bea1c | 2913 | long pnum = 0; |
43ff13b4 | 2914 | |
23860348 MS |
2915 | /* If the packet contains a register number, save it |
2916 | in pnum and set p1 to point to the character | |
2917 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
2918 | |
2919 | /* If this packet is an awatch packet, don't parse the 'a' | |
2920 | as a register number. */ | |
802188a7 | 2921 | |
3c3bea1c GS |
2922 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
2923 | { | |
2924 | /* Read the register number. */ | |
2925 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2926 | p1 = p_temp; |
3c3bea1c | 2927 | } |
802188a7 | 2928 | else |
3c3bea1c | 2929 | p1 = p; |
43ff13b4 | 2930 | |
23860348 | 2931 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 2932 | { |
cfd77fa1 | 2933 | p1 = strchr (p, ':'); |
43ff13b4 | 2934 | if (p1 == NULL) |
8a3fe4f8 AC |
2935 | error (_("Malformed packet(a) (missing colon): %s\n\ |
2936 | Packet: '%s'\n"), | |
3fcb8548 | 2937 | p, buf); |
3c3bea1c | 2938 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
2939 | { |
2940 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2941 | record_currthread (thread_num); | |
cfd77fa1 | 2942 | p = p_temp; |
43ff13b4 | 2943 | } |
3c3bea1c GS |
2944 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2945 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2946 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2947 | { | |
2948 | remote_stopped_by_watchpoint_p = 1; | |
2949 | p = unpack_varlen_hex (++p1, &addr); | |
2950 | remote_watch_data_address = (CORE_ADDR)addr; | |
2951 | } | |
2952 | else | |
2953 | { | |
2954 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 2955 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
2956 | if (p_temp) |
2957 | p = p_temp; | |
2958 | } | |
43ff13b4 | 2959 | } |
802188a7 | 2960 | |
43ff13b4 JM |
2961 | else |
2962 | { | |
ad10f812 | 2963 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 2964 | p = p1; |
43ff13b4 | 2965 | if (*p++ != ':') |
8a3fe4f8 AC |
2966 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2967 | Packet: '%s'\n"), | |
3fcb8548 | 2968 | p, buf); |
43ff13b4 | 2969 | |
ad10f812 | 2970 | if (reg == NULL) |
8a3fe4f8 AC |
2971 | error (_("Remote sent bad register number %ld: %s\n\ |
2972 | Packet: '%s'\n"), | |
3fcb8548 | 2973 | pnum, p, buf); |
43ff13b4 | 2974 | |
cfd77fa1 | 2975 | fieldsize = hex2bin (p, regs, |
23860348 MS |
2976 | register_size (current_gdbarch, |
2977 | reg->regnum)); | |
6c3f2dbf | 2978 | p += 2 * fieldsize; |
23860348 MS |
2979 | if (fieldsize < register_size (current_gdbarch, |
2980 | reg->regnum)) | |
8a3fe4f8 | 2981 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 2982 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
2983 | } |
2984 | ||
2985 | if (*p++ != ';') | |
8a3fe4f8 | 2986 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 2987 | buf, p); |
43ff13b4 JM |
2988 | } |
2989 | } | |
2990 | /* fall through */ | |
23860348 | 2991 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
2992 | status->kind = TARGET_WAITKIND_STOPPED; |
2993 | status->value.sig = (enum target_signal) | |
2994 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2995 | ||
2996 | if (buf[3] == 'p') | |
2997 | { | |
43ff13b4 JM |
2998 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2999 | record_currthread (thread_num); | |
3000 | } | |
43ff13b4 | 3001 | goto got_status; |
23860348 | 3002 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3003 | { |
3004 | /* The remote process exited. */ | |
3005 | status->kind = TARGET_WAITKIND_EXITED; | |
3006 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3007 | goto got_status; | |
3008 | } | |
3009 | case 'X': | |
3010 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3011 | status->value.sig = (enum target_signal) | |
3012 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3013 | kill_kludge = 1; | |
3014 | ||
3015 | goto got_status; | |
23860348 | 3016 | case 'O': /* Console output. */ |
43ff13b4 | 3017 | remote_console_output (buf + 1); |
c4093a6a | 3018 | /* Return immediately to the event loop. The event loop will |
23860348 | 3019 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3020 | status->kind = TARGET_WAITKIND_IGNORE; |
3021 | goto got_status; | |
43ff13b4 JM |
3022 | case '\0': |
3023 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3024 | { | |
3025 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3026 | the remote system doesn't support it. */ |
43ff13b4 JM |
3027 | target_terminal_ours_for_output (); |
3028 | printf_filtered | |
3029 | ("Can't send signals to this remote system. %s not sent.\n", | |
3030 | target_signal_to_name (last_sent_signal)); | |
3031 | last_sent_signal = TARGET_SIGNAL_0; | |
3032 | target_terminal_inferior (); | |
3033 | ||
3034 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3035 | putpkt ((char *) buf); | |
3036 | continue; | |
3037 | } | |
3038 | /* else fallthrough */ | |
3039 | default: | |
8a3fe4f8 | 3040 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3041 | continue; |
3042 | } | |
3043 | } | |
c5aa993b | 3044 | got_status: |
43ff13b4 JM |
3045 | if (thread_num != -1) |
3046 | { | |
39f77062 | 3047 | return pid_to_ptid (thread_num); |
43ff13b4 | 3048 | } |
39f77062 | 3049 | return inferior_ptid; |
43ff13b4 JM |
3050 | } |
3051 | ||
c906108c SS |
3052 | /* Number of bytes of registers this stub implements. */ |
3053 | ||
3054 | static int register_bytes_found; | |
3055 | ||
3056 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3057 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3058 | |
b96ec7ac AC |
3059 | static int |
3060 | fetch_register_using_p (int regnum) | |
3061 | { | |
3062 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 3063 | char *buf = rs->buf, *p; |
b96ec7ac AC |
3064 | char regp[MAX_REGISTER_SIZE]; |
3065 | int i; | |
3066 | ||
fcad0fa4 JB |
3067 | p = buf; |
3068 | *p++ = 'p'; | |
3069 | p += hexnumstr (p, regnum); | |
3070 | *p++ = '\0'; | |
6d820c5c | 3071 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c JB |
3072 | |
3073 | /* If the stub didn't recognize the packet, or if we got an error, | |
3074 | tell our caller. */ | |
3075 | if (buf[0] == '\0' || buf[0] == 'E') | |
3076 | return 0; | |
3077 | ||
3078 | /* If this register is unfetchable, tell the regcache. */ | |
3079 | if (buf[0] == 'x') | |
8480adf2 | 3080 | { |
3f9a994c JB |
3081 | regcache_raw_supply (current_regcache, regnum, NULL); |
3082 | set_register_cached (regnum, -1); | |
8480adf2 | 3083 | return 1; |
b96ec7ac | 3084 | } |
b96ec7ac | 3085 | |
3f9a994c JB |
3086 | /* Otherwise, parse and supply the value. */ |
3087 | p = buf; | |
3088 | i = 0; | |
3089 | while (p[0] != 0) | |
3090 | { | |
3091 | if (p[1] == 0) | |
3092 | { | |
8a3fe4f8 | 3093 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3094 | return 0; |
3095 | } | |
3096 | ||
3097 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3098 | p += 2; | |
3099 | } | |
3100 | regcache_raw_supply (current_regcache, regnum, regp); | |
3101 | return 1; | |
b96ec7ac AC |
3102 | } |
3103 | ||
c906108c | 3104 | static void |
ad10f812 | 3105 | remote_fetch_registers (int regnum) |
c906108c | 3106 | { |
d01949b6 | 3107 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 3108 | char *buf = rs->buf; |
c906108c SS |
3109 | int i; |
3110 | char *p; | |
ad10f812 | 3111 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3112 | |
39f77062 | 3113 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3114 | |
b323314b AC |
3115 | if (regnum >= 0) |
3116 | { | |
3117 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3118 | gdb_assert (reg != NULL); | |
3119 | if (!reg->in_g_packet) | |
3120 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3121 | _("Attempt to fetch a non G-packet register when this " |
3122 | "remote.c does not support the p-packet.")); | |
b323314b | 3123 | } |
444abaca | 3124 | switch (remote_protocol_packets[PACKET_p].support) |
b96ec7ac AC |
3125 | { |
3126 | case PACKET_DISABLE: | |
3127 | break; | |
3128 | case PACKET_ENABLE: | |
3129 | if (fetch_register_using_p (regnum)) | |
3130 | return; | |
3131 | else | |
8a3fe4f8 | 3132 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3133 | case PACKET_SUPPORT_UNKNOWN: |
3134 | if (fetch_register_using_p (regnum)) | |
3135 | { | |
3136 | /* The stub recognized the 'p' packet. Remember this. */ | |
444abaca | 3137 | remote_protocol_packets[PACKET_p].support = PACKET_ENABLE; |
b96ec7ac AC |
3138 | return; |
3139 | } | |
3140 | else | |
3141 | { | |
3142 | /* The stub does not support the 'P' packet. Use 'G' | |
3143 | instead, and don't try using 'P' in the future (it | |
3144 | will just waste our time). */ | |
444abaca | 3145 | remote_protocol_packets[PACKET_p].support = PACKET_DISABLE; |
b96ec7ac AC |
3146 | break; |
3147 | } | |
3148 | } | |
b323314b | 3149 | |
c906108c | 3150 | sprintf (buf, "g"); |
6d820c5c | 3151 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3152 | |
11cf8741 JM |
3153 | /* Save the size of the packet sent to us by the target. Its used |
3154 | as a heuristic when determining the max size of packets that the | |
23860348 | 3155 | target can safely receive. */ |
d01949b6 AC |
3156 | if ((rs->actual_register_packet_size) == 0) |
3157 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3158 | |
3159 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3160 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3161 | |
3162 | /* We can get out of synch in various cases. If the first character | |
3163 | in the buffer is not a hex character, assume that has happened | |
3164 | and try to fetch another packet to read. */ | |
3165 | while ((buf[0] < '0' || buf[0] > '9') | |
3de11b2e | 3166 | && (buf[0] < 'A' || buf[0] > 'F') |
c906108c | 3167 | && (buf[0] < 'a' || buf[0] > 'f') |
23860348 | 3168 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3169 | { |
3170 | if (remote_debug) | |
0f71a2f6 JM |
3171 | fprintf_unfiltered (gdb_stdlog, |
3172 | "Bad register packet; fetching a new packet\n"); | |
6d820c5c | 3173 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
3174 | } |
3175 | ||
3176 | /* Reply describes registers byte by byte, each byte encoded as two | |
3177 | hex characters. Suck them all up, then supply them to the | |
3178 | register cacheing/storage mechanism. */ | |
3179 | ||
3180 | p = buf; | |
ad10f812 | 3181 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3182 | { |
3183 | if (p[0] == 0) | |
3184 | break; | |
3185 | if (p[1] == 0) | |
3186 | { | |
8a3fe4f8 | 3187 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3188 | /* Don't change register_bytes_found in this case, and don't |
3189 | print a second warning. */ | |
3190 | goto supply_them; | |
3191 | } | |
3192 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3193 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3194 | else |
3195 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3196 | p += 2; | |
3197 | } | |
3198 | ||
3199 | if (i != register_bytes_found) | |
3200 | { | |
3201 | register_bytes_found = i; | |
2649061d AC |
3202 | if (REGISTER_BYTES_OK_P () |
3203 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3204 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3205 | } |
c5aa993b | 3206 | |
b323314b | 3207 | supply_them: |
ad10f812 | 3208 | { |
b323314b AC |
3209 | int i; |
3210 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3211 | { |
b323314b AC |
3212 | struct packet_reg *r = &rs->regs[i]; |
3213 | if (r->in_g_packet) | |
3214 | { | |
8ccc1287 AC |
3215 | if (r->offset * 2 >= strlen (buf)) |
3216 | /* A short packet that didn't include the register's | |
3217 | value, this implies that the register is zero (and | |
3218 | not that the register is unavailable). Supply that | |
3219 | zero value. */ | |
3220 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3221 | else if (buf[r->offset * 2] == 'x') | |
3222 | { | |
3223 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3224 | /* The register isn't available, mark it as such (at | |
3225 | the same time setting the value to zero). */ | |
3226 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3227 | set_register_cached (i, -1); | |
3228 | } | |
3229 | else | |
3230 | regcache_raw_supply (current_regcache, r->regnum, | |
3231 | regs + r->offset); | |
b323314b | 3232 | } |
ad10f812 AC |
3233 | } |
3234 | } | |
c906108c SS |
3235 | } |
3236 | ||
3237 | /* Prepare to store registers. Since we may send them all (using a | |
3238 | 'G' request), we have to read out the ones we don't want to change | |
3239 | first. */ | |
3240 | ||
c5aa993b | 3241 | static void |
fba45db2 | 3242 | remote_prepare_to_store (void) |
c906108c | 3243 | { |
cf0e1e0d DJ |
3244 | struct remote_state *rs = get_remote_state (); |
3245 | int i; | |
cfd77fa1 | 3246 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3247 | |
c906108c | 3248 | /* Make sure the entire registers array is valid. */ |
444abaca | 3249 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3250 | { |
3251 | case PACKET_DISABLE: | |
3252 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3253 | /* Make sure all the necessary registers are cached. */ |
3254 | for (i = 0; i < NUM_REGS; i++) | |
3255 | if (rs->regs[i].in_g_packet) | |
3256 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3257 | break; |
3258 | case PACKET_ENABLE: | |
3259 | break; | |
3260 | } | |
3261 | } | |
3262 | ||
ad10f812 | 3263 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3264 | packet was not recognized. */ |
5a2468f5 JM |
3265 | |
3266 | static int | |
ad10f812 | 3267 | store_register_using_P (int regnum) |
5a2468f5 | 3268 | { |
d01949b6 | 3269 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3270 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3271 | /* Try storing a single register. */ |
6d820c5c | 3272 | char *buf = rs->buf; |
cfd77fa1 | 3273 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3274 | char *p; |
5a2468f5 | 3275 | |
ecbc58df | 3276 | xsnprintf (buf, rs->remote_packet_size, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3277 | p = buf + strlen (buf); |
822c9732 | 3278 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3279 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3280 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 JM |
3281 | |
3282 | return buf[0] != '\0'; | |
c906108c SS |
3283 | } |
3284 | ||
5a2468f5 | 3285 | |
23860348 MS |
3286 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3287 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3288 | |
3289 | static void | |
ad10f812 | 3290 | remote_store_registers (int regnum) |
c906108c | 3291 | { |
d01949b6 | 3292 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 3293 | gdb_byte *regs; |
c906108c SS |
3294 | char *p; |
3295 | ||
39f77062 | 3296 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3297 | |
ad10f812 | 3298 | if (regnum >= 0) |
c906108c | 3299 | { |
444abaca | 3300 | switch (remote_protocol_packets[PACKET_P].support) |
c906108c | 3301 | { |
5a2468f5 JM |
3302 | case PACKET_DISABLE: |
3303 | break; | |
3304 | case PACKET_ENABLE: | |
ad10f812 | 3305 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3306 | return; |
3307 | else | |
8a3fe4f8 | 3308 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3309 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3310 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3311 | { |
3312 | /* The stub recognized the 'P' packet. Remember this. */ | |
444abaca | 3313 | remote_protocol_packets[PACKET_P].support = PACKET_ENABLE; |
5a2468f5 JM |
3314 | return; |
3315 | } | |
3316 | else | |
3317 | { | |
3318 | /* The stub does not support the 'P' packet. Use 'G' | |
3319 | instead, and don't try using 'P' in the future (it | |
3320 | will just waste our time). */ | |
444abaca | 3321 | remote_protocol_packets[PACKET_P].support = PACKET_DISABLE; |
5a2468f5 JM |
3322 | break; |
3323 | } | |
c906108c | 3324 | } |
c906108c SS |
3325 | } |
3326 | ||
193cb69f AC |
3327 | /* Extract all the registers in the regcache copying them into a |
3328 | local buffer. */ | |
3329 | { | |
b323314b | 3330 | int i; |
ad10f812 | 3331 | regs = alloca (rs->sizeof_g_packet); |
170cd118 | 3332 | memset (regs, 0, rs->sizeof_g_packet); |
b323314b | 3333 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3334 | { |
b323314b AC |
3335 | struct packet_reg *r = &rs->regs[i]; |
3336 | if (r->in_g_packet) | |
822c9732 | 3337 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3338 | } |
3339 | } | |
c906108c SS |
3340 | |
3341 | /* Command describes registers byte by byte, | |
3342 | each byte encoded as two hex characters. */ | |
6d820c5c | 3343 | p = rs->buf; |
193cb69f | 3344 | *p++ = 'G'; |
c906108c | 3345 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3346 | bin2hex (regs, p, register_bytes_found); |
6d820c5c | 3347 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3348 | } |
c906108c SS |
3349 | \f |
3350 | ||
3351 | /* Return the number of hex digits in num. */ | |
3352 | ||
3353 | static int | |
fba45db2 | 3354 | hexnumlen (ULONGEST num) |
c906108c SS |
3355 | { |
3356 | int i; | |
3357 | ||
3358 | for (i = 0; num != 0; i++) | |
3359 | num >>= 4; | |
3360 | ||
3361 | return max (i, 1); | |
3362 | } | |
3363 | ||
2df3850c | 3364 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3365 | |
3366 | static int | |
fba45db2 | 3367 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3368 | { |
c906108c | 3369 | int len = hexnumlen (num); |
2df3850c JM |
3370 | return hexnumnstr (buf, num, len); |
3371 | } | |
3372 | ||
c906108c | 3373 | |
2df3850c | 3374 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3375 | |
2df3850c | 3376 | static int |
fba45db2 | 3377 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3378 | { |
3379 | int i; | |
3380 | ||
3381 | buf[width] = '\0'; | |
3382 | ||
3383 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3384 | { |
c5aa993b | 3385 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3386 | num >>= 4; |
3387 | } | |
3388 | ||
2df3850c | 3389 | return width; |
c906108c SS |
3390 | } |
3391 | ||
23860348 | 3392 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3393 | |
3394 | static CORE_ADDR | |
fba45db2 | 3395 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3396 | { |
3397 | if (remote_address_size > 0 | |
3398 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3399 | { | |
3400 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3401 | in a ULONGEST variable. */ |
c906108c SS |
3402 | ULONGEST mask = 1; |
3403 | mask = (mask << remote_address_size) - 1; | |
3404 | addr &= mask; | |
3405 | } | |
3406 | return addr; | |
3407 | } | |
3408 | ||
3409 | /* Determine whether the remote target supports binary downloading. | |
3410 | This is accomplished by sending a no-op memory write of zero length | |
3411 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3412 | the whole packet, since many stubs strip the eighth bit and |
3413 | subsequently compute a wrong checksum, which causes real havoc with | |
3414 | remote_write_bytes. | |
7a292a7a | 3415 | |
96baa820 JM |
3416 | NOTE: This can still lose if the serial line is not eight-bit |
3417 | clean. In cases like this, the user should clear "remote | |
23860348 | 3418 | X-packet". */ |
96baa820 | 3419 | |
c906108c | 3420 | static void |
fba45db2 | 3421 | check_binary_download (CORE_ADDR addr) |
c906108c | 3422 | { |
d01949b6 | 3423 | struct remote_state *rs = get_remote_state (); |
24b06219 | 3424 | |
444abaca | 3425 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3426 | { |
96baa820 JM |
3427 | case PACKET_DISABLE: |
3428 | break; | |
3429 | case PACKET_ENABLE: | |
3430 | break; | |
3431 | case PACKET_SUPPORT_UNKNOWN: | |
3432 | { | |
6d820c5c | 3433 | char *buf = rs->buf; |
96baa820 | 3434 | char *p; |
802188a7 | 3435 | |
96baa820 JM |
3436 | p = buf; |
3437 | *p++ = 'X'; | |
3438 | p += hexnumstr (p, (ULONGEST) addr); | |
3439 | *p++ = ','; | |
3440 | p += hexnumstr (p, (ULONGEST) 0); | |
3441 | *p++ = ':'; | |
3442 | *p = '\0'; | |
802188a7 | 3443 | |
96baa820 | 3444 | putpkt_binary (buf, (int) (p - buf)); |
6d820c5c | 3445 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3446 | |
96baa820 JM |
3447 | if (buf[0] == '\0') |
3448 | { | |
3449 | if (remote_debug) | |
3450 | fprintf_unfiltered (gdb_stdlog, | |
3451 | "binary downloading NOT suppported by target\n"); | |
444abaca | 3452 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
3453 | } |
3454 | else | |
3455 | { | |
3456 | if (remote_debug) | |
3457 | fprintf_unfiltered (gdb_stdlog, | |
3458 | "binary downloading suppported by target\n"); | |
444abaca | 3459 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
3460 | } |
3461 | break; | |
3462 | } | |
c906108c SS |
3463 | } |
3464 | } | |
3465 | ||
3466 | /* Write memory data directly to the remote machine. | |
3467 | This does not inform the data cache; the data cache uses this. | |
3468 | MEMADDR is the address in the remote memory space. | |
3469 | MYADDR is the address of the buffer in our space. | |
3470 | LEN is the number of bytes. | |
3471 | ||
917317f4 | 3472 | Returns number of bytes transferred, or 0 (setting errno) for |
23860348 | 3473 | error. Only transfer a single packet. */ |
c906108c | 3474 | |
449092f6 | 3475 | int |
cfd77fa1 | 3476 | remote_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3477 | { |
6d820c5c | 3478 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 DJ |
3479 | char *buf; |
3480 | char *p; | |
3481 | char *plen; | |
917317f4 JM |
3482 | int plenlen; |
3483 | int todo; | |
3484 | int nr_bytes; | |
a257b5bb | 3485 | int payload_size; |
cfd77fa1 | 3486 | char *payload_start; |
c906108c | 3487 | |
a257b5bb | 3488 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3489 | check_binary_download (memaddr); |
3490 | ||
3de11b2e NS |
3491 | payload_size = get_memory_write_packet_size (); |
3492 | ||
6d820c5c DJ |
3493 | /* The packet buffer will be large enough for the payload; |
3494 | get_memory_packet_size ensures this. */ | |
3495 | buf = rs->buf; | |
c906108c | 3496 | |
a257b5bb | 3497 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
3498 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
3499 | */ | |
3500 | payload_size -= strlen ("$M,:#NN"); | |
3501 | payload_size -= hexnumlen (memaddr); | |
c906108c | 3502 | |
a257b5bb | 3503 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3504 | |
a257b5bb | 3505 | /* Append "[XM]". Compute a best guess of the number of bytes |
23860348 | 3506 | actually transfered. */ |
a257b5bb | 3507 | p = buf; |
444abaca | 3508 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3509 | { |
917317f4 JM |
3510 | case PACKET_ENABLE: |
3511 | *p++ = 'X'; | |
23860348 | 3512 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3513 | todo = min (len, payload_size); |
3de11b2e NS |
3514 | payload_size -= hexnumlen (todo); |
3515 | todo = min (todo, payload_size); | |
917317f4 JM |
3516 | break; |
3517 | case PACKET_DISABLE: | |
3518 | *p++ = 'M'; | |
23860348 | 3519 | /* Num bytes that will fit. */ |
a257b5bb | 3520 | todo = min (len, payload_size / 2); |
3de11b2e NS |
3521 | payload_size -= hexnumlen (todo); |
3522 | todo = min (todo, payload_size / 2); | |
917317f4 JM |
3523 | break; |
3524 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3525 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3526 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3527 | default: |
e2e0b3e5 | 3528 | internal_error (__FILE__, __LINE__, _("bad switch")); |
917317f4 | 3529 | } |
3de11b2e NS |
3530 | if (todo <= 0) |
3531 | internal_error (__FILE__, __LINE__, | |
3532 | _("minumum packet size too small to write data")); | |
802188a7 | 3533 | |
a257b5bb | 3534 | /* Append "<memaddr>". */ |
917317f4 JM |
3535 | memaddr = remote_address_masked (memaddr); |
3536 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3537 | |
3538 | /* Append ",". */ | |
917317f4 | 3539 | *p++ = ','; |
802188a7 | 3540 | |
a257b5bb AC |
3541 | /* Append <len>. Retain the location/size of <len>. It may need to |
3542 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3543 | plen = p; |
3544 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3545 | p += plenlen; | |
a257b5bb AC |
3546 | |
3547 | /* Append ":". */ | |
917317f4 JM |
3548 | *p++ = ':'; |
3549 | *p = '\0'; | |
802188a7 | 3550 | |
a257b5bb AC |
3551 | /* Append the packet body. */ |
3552 | payload_start = p; | |
444abaca | 3553 | switch (remote_protocol_packets[PACKET_X].support) |
917317f4 JM |
3554 | { |
3555 | case PACKET_ENABLE: | |
3556 | /* Binary mode. Send target system values byte by byte, in | |
3557 | increasing byte addresses. Only escape certain critical | |
3558 | characters. */ | |
3559 | for (nr_bytes = 0; | |
a257b5bb | 3560 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3561 | nr_bytes++) |
c906108c | 3562 | { |
917317f4 JM |
3563 | switch (myaddr[nr_bytes] & 0xff) |
3564 | { | |
3565 | case '$': | |
3566 | case '#': | |
3567 | case 0x7d: | |
23860348 | 3568 | /* These must be escaped. */ |
917317f4 JM |
3569 | *p++ = 0x7d; |
3570 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3571 | break; | |
3572 | default: | |
3573 | *p++ = myaddr[nr_bytes] & 0xff; | |
3574 | break; | |
3575 | } | |
c906108c | 3576 | } |
917317f4 | 3577 | if (nr_bytes < todo) |
c906108c | 3578 | { |
802188a7 | 3579 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3580 | and we have actually sent fewer bytes than planned. |
3581 | Fix-up the length field of the packet. Use the same | |
3582 | number of characters as before. */ | |
917317f4 JM |
3583 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3584 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3585 | } |
917317f4 JM |
3586 | break; |
3587 | case PACKET_DISABLE: | |
3588 | /* Normal mode: Send target system values byte by byte, in | |
3589 | increasing byte addresses. Each byte is encoded as a two hex | |
3590 | value. */ | |
2644f393 | 3591 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3592 | p += 2 * nr_bytes; |
917317f4 JM |
3593 | break; |
3594 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3595 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3596 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3597 | default: |
e2e0b3e5 | 3598 | internal_error (__FILE__, __LINE__, _("bad switch")); |
c906108c | 3599 | } |
802188a7 | 3600 | |
917317f4 | 3601 | putpkt_binary (buf, (int) (p - buf)); |
6d820c5c | 3602 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 3603 | |
917317f4 JM |
3604 | if (buf[0] == 'E') |
3605 | { | |
3606 | /* There is no correspondance between what the remote protocol | |
3607 | uses for errors and errno codes. We would like a cleaner way | |
3608 | of representing errors (big enough to include errno codes, | |
3609 | bfd_error codes, and others). But for now just return EIO. */ | |
3610 | errno = EIO; | |
3611 | return 0; | |
3612 | } | |
802188a7 | 3613 | |
23860348 MS |
3614 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
3615 | fewer bytes than we'd planned. */ | |
917317f4 | 3616 | return nr_bytes; |
c906108c SS |
3617 | } |
3618 | ||
3619 | /* Read memory data directly from the remote machine. | |
3620 | This does not use the data cache; the data cache uses this. | |
3621 | MEMADDR is the address in the remote memory space. | |
3622 | MYADDR is the address of the buffer in our space. | |
3623 | LEN is the number of bytes. | |
3624 | ||
3625 | Returns number of bytes transferred, or 0 for error. */ | |
3626 | ||
917317f4 JM |
3627 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3628 | remote targets) shouldn't attempt to read the entire buffer. | |
3629 | Instead it should read a single packet worth of data and then | |
3630 | return the byte size of that packet to the caller. The caller (its | |
3631 | caller and its callers caller ;-) already contains code for | |
23860348 | 3632 | handling partial reads. */ |
917317f4 | 3633 | |
449092f6 | 3634 | int |
cfd77fa1 | 3635 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3636 | { |
6d820c5c | 3637 | struct remote_state *rs = get_remote_state (); |
11cf8741 | 3638 | char *buf; |
23860348 | 3639 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
3640 | int origlen; |
3641 | ||
11cf8741 | 3642 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
3643 | /* The packet buffer will be large enough for the payload; |
3644 | get_memory_packet_size ensures this. */ | |
3645 | buf = rs->buf; | |
c906108c SS |
3646 | |
3647 | origlen = len; | |
3648 | while (len > 0) | |
3649 | { | |
c906108c SS |
3650 | char *p; |
3651 | int todo; | |
3652 | int i; | |
3653 | ||
c5aa993b | 3654 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3655 | |
3656 | /* construct "m"<memaddr>","<len>" */ | |
3657 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3658 | memaddr = remote_address_masked (memaddr); | |
3659 | p = buf; | |
3660 | *p++ = 'm'; | |
3661 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3662 | *p++ = ','; | |
3663 | p += hexnumstr (p, (ULONGEST) todo); | |
3664 | *p = '\0'; | |
3665 | ||
3666 | putpkt (buf); | |
6d820c5c | 3667 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3668 | |
66504d44 MS |
3669 | if (buf[0] == 'E' |
3670 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3671 | && buf[3] == '\0') | |
c906108c | 3672 | { |
23860348 MS |
3673 | /* There is no correspondance between what the remote |
3674 | protocol uses for errors and errno codes. We would like | |
3675 | a cleaner way of representing errors (big enough to | |
3676 | include errno codes, bfd_error codes, and others). But | |
3677 | for now just return EIO. */ | |
c906108c SS |
3678 | errno = EIO; |
3679 | return 0; | |
3680 | } | |
3681 | ||
c5aa993b JM |
3682 | /* Reply describes memory byte by byte, |
3683 | each byte encoded as two hex characters. */ | |
c906108c SS |
3684 | |
3685 | p = buf; | |
30559e10 | 3686 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3687 | { |
30559e10 | 3688 | /* Reply is short. This means that we were able to read |
23860348 | 3689 | only part of what we wanted to. */ |
30559e10 | 3690 | return i + (origlen - len); |
c906108c SS |
3691 | } |
3692 | myaddr += todo; | |
3693 | memaddr += todo; | |
3694 | len -= todo; | |
3695 | } | |
3696 | return origlen; | |
3697 | } | |
3698 | \f | |
3699 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
3700 | transferring to or from debugger address BUFFER. Write to inferior |
3701 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
3702 | read; 0 for error. TARGET is unused. */ | |
392a587b | 3703 | |
c906108c | 3704 | static int |
961cb7b5 | 3705 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 3706 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3707 | struct target_ops *target) |
c906108c | 3708 | { |
392a587b JM |
3709 | CORE_ADDR targ_addr; |
3710 | int targ_len; | |
4930751a C |
3711 | int res; |
3712 | ||
f6684c31 | 3713 | /* Should this be the selected frame? */ |
23860348 MS |
3714 | gdbarch_remote_translate_xfer_address (current_gdbarch, |
3715 | current_regcache, | |
f6684c31 AC |
3716 | mem_addr, mem_len, |
3717 | &targ_addr, &targ_len); | |
392a587b | 3718 | if (targ_len <= 0) |
c906108c | 3719 | return 0; |
c906108c | 3720 | |
4930751a C |
3721 | if (should_write) |
3722 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3723 | else | |
3724 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3725 | ||
3726 | return res; | |
c906108c SS |
3727 | } |
3728 | ||
c906108c | 3729 | static void |
fba45db2 | 3730 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3731 | { |
3732 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3733 | } | |
3734 | \f | |
3735 | /* Stuff for dealing with the packets which are part of this protocol. | |
3736 | See comment at top of file for details. */ | |
3737 | ||
23860348 MS |
3738 | /* Read a single character from the remote end, masking it down to 7 |
3739 | bits. */ | |
c906108c SS |
3740 | |
3741 | static int | |
fba45db2 | 3742 | readchar (int timeout) |
c906108c SS |
3743 | { |
3744 | int ch; | |
3745 | ||
2cd58942 | 3746 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3747 | |
2acceee2 JM |
3748 | if (ch >= 0) |
3749 | return (ch & 0x7f); | |
3750 | ||
3751 | switch ((enum serial_rc) ch) | |
c906108c SS |
3752 | { |
3753 | case SERIAL_EOF: | |
2acceee2 | 3754 | target_mourn_inferior (); |
8a3fe4f8 | 3755 | error (_("Remote connection closed")); |
2acceee2 | 3756 | /* no return */ |
c906108c | 3757 | case SERIAL_ERROR: |
e2e0b3e5 | 3758 | perror_with_name (_("Remote communication error")); |
2acceee2 | 3759 | /* no return */ |
c906108c | 3760 | case SERIAL_TIMEOUT: |
2acceee2 | 3761 | break; |
c906108c | 3762 | } |
2acceee2 | 3763 | return ch; |
c906108c SS |
3764 | } |
3765 | ||
6d820c5c DJ |
3766 | /* Send the command in *BUF to the remote machine, and read the reply |
3767 | into *BUF. Report an error if we get an error reply. Resize | |
3768 | *BUF using xrealloc if necessary to hold the result, and update | |
3769 | *SIZEOF_BUF. */ | |
c906108c SS |
3770 | |
3771 | static void | |
6d820c5c DJ |
3772 | remote_send (char **buf, |
3773 | long *sizeof_buf) | |
c906108c | 3774 | { |
6d820c5c | 3775 | putpkt (*buf); |
c2d11a7d | 3776 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3777 | |
6d820c5c DJ |
3778 | if ((*buf)[0] == 'E') |
3779 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
3780 | } |
3781 | ||
3782 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3783 | string notation. */ | |
3784 | ||
3785 | static void | |
fba45db2 | 3786 | print_packet (char *buf) |
c906108c SS |
3787 | { |
3788 | puts_filtered ("\""); | |
43e526b9 | 3789 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3790 | puts_filtered ("\""); |
3791 | } | |
3792 | ||
3793 | int | |
fba45db2 | 3794 | putpkt (char *buf) |
c906108c SS |
3795 | { |
3796 | return putpkt_binary (buf, strlen (buf)); | |
3797 | } | |
3798 | ||
3799 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 3800 | of the packet is in BUF. The string in BUF can be at most |
24b06219 | 3801 | RS->remote_packet_size - 5 to account for the $, # and checksum, |
23860348 MS |
3802 | and for a possible /0 if we are debugging (remote_debug) and want |
3803 | to print the sent packet as a string. */ | |
c906108c SS |
3804 | |
3805 | static int | |
fba45db2 | 3806 | putpkt_binary (char *buf, int cnt) |
c906108c | 3807 | { |
d01949b6 | 3808 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3809 | int i; |
3810 | unsigned char csum = 0; | |
11cf8741 | 3811 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 3812 | |
c906108c SS |
3813 | int ch; |
3814 | int tcount = 0; | |
3815 | char *p; | |
3816 | ||
3817 | /* Copy the packet into buffer BUF2, encapsulating it | |
3818 | and giving it a checksum. */ | |
3819 | ||
c906108c SS |
3820 | p = buf2; |
3821 | *p++ = '$'; | |
3822 | ||
3823 | for (i = 0; i < cnt; i++) | |
3824 | { | |
3825 | csum += buf[i]; | |
3826 | *p++ = buf[i]; | |
3827 | } | |
3828 | *p++ = '#'; | |
3829 | *p++ = tohex ((csum >> 4) & 0xf); | |
3830 | *p++ = tohex (csum & 0xf); | |
3831 | ||
3832 | /* Send it over and over until we get a positive ack. */ | |
3833 | ||
3834 | while (1) | |
3835 | { | |
3836 | int started_error_output = 0; | |
3837 | ||
3838 | if (remote_debug) | |
3839 | { | |
3840 | *p = '\0'; | |
43e526b9 JM |
3841 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3842 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3843 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3844 | gdb_flush (gdb_stdlog); |
c906108c | 3845 | } |
2cd58942 | 3846 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 3847 | perror_with_name (_("putpkt: write failed")); |
c906108c | 3848 | |
23860348 | 3849 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
3850 | while (1) |
3851 | { | |
3852 | ch = readchar (remote_timeout); | |
3853 | ||
c5aa993b | 3854 | if (remote_debug) |
c906108c SS |
3855 | { |
3856 | switch (ch) | |
3857 | { | |
3858 | case '+': | |
1216fa2c | 3859 | case '-': |
c906108c SS |
3860 | case SERIAL_TIMEOUT: |
3861 | case '$': | |
3862 | if (started_error_output) | |
3863 | { | |
3864 | putchar_unfiltered ('\n'); | |
3865 | started_error_output = 0; | |
3866 | } | |
3867 | } | |
3868 | } | |
3869 | ||
3870 | switch (ch) | |
3871 | { | |
3872 | case '+': | |
3873 | if (remote_debug) | |
0f71a2f6 | 3874 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3875 | return 1; |
1216fa2c AC |
3876 | case '-': |
3877 | if (remote_debug) | |
3878 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3879 | case SERIAL_TIMEOUT: |
c5aa993b | 3880 | tcount++; |
c906108c SS |
3881 | if (tcount > 3) |
3882 | return 0; | |
23860348 | 3883 | break; /* Retransmit buffer. */ |
c906108c SS |
3884 | case '$': |
3885 | { | |
40e3f985 | 3886 | if (remote_debug) |
23860348 MS |
3887 | fprintf_unfiltered (gdb_stdlog, |
3888 | "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
3889 | /* It's probably an old response sent because an ACK |
3890 | was lost. Gobble up the packet and ack it so it | |
3891 | doesn't get retransmitted when we resend this | |
3892 | packet. */ | |
6d820c5c | 3893 | skip_frame (); |
d6f7abdf | 3894 | serial_write (remote_desc, "+", 1); |
23860348 | 3895 | continue; /* Now, go look for +. */ |
c906108c SS |
3896 | } |
3897 | default: | |
3898 | if (remote_debug) | |
3899 | { | |
3900 | if (!started_error_output) | |
3901 | { | |
3902 | started_error_output = 1; | |
0f71a2f6 | 3903 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3904 | } |
0f71a2f6 | 3905 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3906 | } |
3907 | continue; | |
3908 | } | |
23860348 | 3909 | break; /* Here to retransmit. */ |
c906108c SS |
3910 | } |
3911 | ||
3912 | #if 0 | |
3913 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3914 | able to get out next time we call QUIT, without anything as |
3915 | violent as interrupt_query. If we want to provide a way out of | |
3916 | here without getting to the next QUIT, it should be based on | |
3917 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3918 | if (quit_flag) |
3919 | { | |
3920 | quit_flag = 0; | |
3921 | interrupt_query (); | |
3922 | } | |
3923 | #endif | |
3924 | } | |
3925 | } | |
3926 | ||
6d820c5c DJ |
3927 | /* Come here after finding the start of a frame when we expected an |
3928 | ack. Do our best to discard the rest of this packet. */ | |
3929 | ||
3930 | static void | |
3931 | skip_frame (void) | |
3932 | { | |
3933 | int c; | |
3934 | ||
3935 | while (1) | |
3936 | { | |
3937 | c = readchar (remote_timeout); | |
3938 | switch (c) | |
3939 | { | |
3940 | case SERIAL_TIMEOUT: | |
3941 | /* Nothing we can do. */ | |
3942 | return; | |
3943 | case '#': | |
3944 | /* Discard the two bytes of checksum and stop. */ | |
3945 | c = readchar (remote_timeout); | |
3946 | if (c >= 0) | |
3947 | c = readchar (remote_timeout); | |
3948 | ||
3949 | return; | |
3950 | case '*': /* Run length encoding. */ | |
3951 | /* Discard the repeat count. */ | |
3952 | c = readchar (remote_timeout); | |
3953 | if (c < 0) | |
3954 | return; | |
3955 | break; | |
3956 | default: | |
3957 | /* A regular character. */ | |
3958 | break; | |
3959 | } | |
3960 | } | |
3961 | } | |
3962 | ||
c906108c | 3963 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
3964 | into *BUF, verifying the checksum, length, and handling run-length |
3965 | compression. NUL terminate the buffer. If there is not enough room, | |
3966 | expand *BUF using xrealloc. | |
c906108c | 3967 | |
c2d11a7d JM |
3968 | Returns -1 on error, number of characters in buffer (ignoring the |
3969 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 3970 | SERIAL status indications). */ |
c2d11a7d JM |
3971 | |
3972 | static long | |
6d820c5c DJ |
3973 | read_frame (char **buf_p, |
3974 | long *sizeof_buf) | |
c906108c SS |
3975 | { |
3976 | unsigned char csum; | |
c2d11a7d | 3977 | long bc; |
c906108c | 3978 | int c; |
6d820c5c | 3979 | char *buf = *buf_p; |
c906108c SS |
3980 | |
3981 | csum = 0; | |
c2d11a7d | 3982 | bc = 0; |
c906108c SS |
3983 | |
3984 | while (1) | |
3985 | { | |
3986 | c = readchar (remote_timeout); | |
c906108c SS |
3987 | switch (c) |
3988 | { | |
3989 | case SERIAL_TIMEOUT: | |
3990 | if (remote_debug) | |
0f71a2f6 | 3991 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 3992 | return -1; |
c906108c SS |
3993 | case '$': |
3994 | if (remote_debug) | |
0f71a2f6 JM |
3995 | fputs_filtered ("Saw new packet start in middle of old one\n", |
3996 | gdb_stdlog); | |
23860348 | 3997 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
3998 | case '#': |
3999 | { | |
4000 | unsigned char pktcsum; | |
e1b09194 AC |
4001 | int check_0 = 0; |
4002 | int check_1 = 0; | |
c906108c | 4003 | |
c2d11a7d | 4004 | buf[bc] = '\0'; |
c906108c | 4005 | |
e1b09194 AC |
4006 | check_0 = readchar (remote_timeout); |
4007 | if (check_0 >= 0) | |
4008 | check_1 = readchar (remote_timeout); | |
802188a7 | 4009 | |
e1b09194 AC |
4010 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4011 | { | |
4012 | if (remote_debug) | |
23860348 MS |
4013 | fputs_filtered ("Timeout in checksum, retrying\n", |
4014 | gdb_stdlog); | |
e1b09194 AC |
4015 | return -1; |
4016 | } | |
4017 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4018 | { |
4019 | if (remote_debug) | |
23860348 MS |
4020 | fputs_filtered ("Communication error in checksum\n", |
4021 | gdb_stdlog); | |
40e3f985 FN |
4022 | return -1; |
4023 | } | |
c906108c | 4024 | |
e1b09194 | 4025 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4026 | if (csum == pktcsum) |
c2d11a7d | 4027 | return bc; |
c906108c | 4028 | |
c5aa993b | 4029 | if (remote_debug) |
c906108c | 4030 | { |
0f71a2f6 | 4031 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4032 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4033 | pktcsum, csum); |
4034 | fputs_filtered (buf, gdb_stdlog); | |
4035 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4036 | } |
c2d11a7d | 4037 | /* Number of characters in buffer ignoring trailing |
23860348 | 4038 | NULL. */ |
c2d11a7d | 4039 | return -1; |
c906108c | 4040 | } |
23860348 | 4041 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4042 | { |
4043 | int repeat; | |
4044 | csum += c; | |
c906108c | 4045 | |
b4501125 AC |
4046 | c = readchar (remote_timeout); |
4047 | csum += c; | |
23860348 | 4048 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4049 | |
23860348 | 4050 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4051 | |
6d820c5c | 4052 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4053 | { |
6d820c5c DJ |
4054 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4055 | { | |
4056 | /* Make some more room in the buffer. */ | |
4057 | *sizeof_buf += repeat; | |
4058 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4059 | buf = *buf_p; | |
4060 | } | |
4061 | ||
c2d11a7d JM |
4062 | memset (&buf[bc], buf[bc - 1], repeat); |
4063 | bc += repeat; | |
c2c6d25f JM |
4064 | continue; |
4065 | } | |
4066 | ||
c2d11a7d | 4067 | buf[bc] = '\0'; |
6d820c5c | 4068 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4069 | return -1; |
c2c6d25f | 4070 | } |
c906108c | 4071 | default: |
6d820c5c | 4072 | if (bc >= *sizeof_buf - 1) |
c906108c | 4073 | { |
6d820c5c DJ |
4074 | /* Make some more room in the buffer. */ |
4075 | *sizeof_buf *= 2; | |
4076 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4077 | buf = *buf_p; | |
c906108c SS |
4078 | } |
4079 | ||
6d820c5c DJ |
4080 | buf[bc++] = c; |
4081 | csum += c; | |
4082 | continue; | |
c906108c SS |
4083 | } |
4084 | } | |
4085 | } | |
4086 | ||
4087 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4088 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4089 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4090 | rather than timing out; this is used (in synchronous mode) to wait | |
4091 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4092 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4093 | don't have to change all the calls to getpkt to deal with the | |
4094 | return value, because at the moment I don't know what the right | |
23860348 | 4095 | thing to do it for those. */ |
c906108c | 4096 | void |
6d820c5c DJ |
4097 | getpkt (char **buf, |
4098 | long *sizeof_buf, | |
c2d11a7d | 4099 | int forever) |
d9fcf2fb JM |
4100 | { |
4101 | int timed_out; | |
4102 | ||
4103 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4104 | } | |
4105 | ||
4106 | ||
4107 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4108 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4109 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4110 | rather than timing out; this is used (in synchronous mode) to wait | |
4111 | for a target that is is executing user code to stop. If FOREVER == | |
4112 | 0, this function is allowed to time out gracefully and return an | |
4113 | indication of this to the caller. */ | |
3172dc30 | 4114 | static int |
6d820c5c | 4115 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4116 | { |
4117 | int c; | |
4118 | int tries; | |
4119 | int timeout; | |
4120 | int val; | |
4121 | ||
6d820c5c | 4122 | strcpy (*buf, "timeout"); |
c906108c SS |
4123 | |
4124 | if (forever) | |
4125 | { | |
c906108c | 4126 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4127 | } |
4128 | ||
4129 | else | |
4130 | timeout = remote_timeout; | |
4131 | ||
4132 | #define MAX_TRIES 3 | |
4133 | ||
4134 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4135 | { | |
4136 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4137 | continuously, but if it pauses, we'll get a zero from |
4138 | readchar because of timeout. Then we'll count that as a | |
4139 | retry. */ | |
c906108c | 4140 | |
23860348 MS |
4141 | /* Note that we will only wait forever prior to the start of a |
4142 | packet. After that, we expect characters to arrive at a | |
4143 | brisk pace. They should show up within remote_timeout | |
4144 | intervals. */ | |
c906108c SS |
4145 | |
4146 | do | |
4147 | { | |
4148 | c = readchar (timeout); | |
4149 | ||
4150 | if (c == SERIAL_TIMEOUT) | |
4151 | { | |
23860348 | 4152 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4153 | { |
2acceee2 | 4154 | QUIT; |
c906108c | 4155 | target_mourn_inferior (); |
8a3fe4f8 | 4156 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4157 | } |
c906108c | 4158 | if (remote_debug) |
0f71a2f6 | 4159 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4160 | goto retry; |
4161 | } | |
4162 | } | |
4163 | while (c != '$'); | |
4164 | ||
4165 | /* We've found the start of a packet, now collect the data. */ | |
4166 | ||
c2d11a7d | 4167 | val = read_frame (buf, sizeof_buf); |
c906108c | 4168 | |
c2d11a7d | 4169 | if (val >= 0) |
c906108c SS |
4170 | { |
4171 | if (remote_debug) | |
43e526b9 JM |
4172 | { |
4173 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
6d820c5c | 4174 | fputstr_unfiltered (*buf, 0, gdb_stdlog); |
43e526b9 JM |
4175 | fprintf_unfiltered (gdb_stdlog, "\n"); |
4176 | } | |
2cd58942 | 4177 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4178 | return 0; |
c906108c SS |
4179 | } |
4180 | ||
4181 | /* Try the whole thing again. */ | |
4182 | retry: | |
2cd58942 | 4183 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4184 | } |
4185 | ||
23860348 MS |
4186 | /* We have tried hard enough, and just can't receive the packet. |
4187 | Give up. */ | |
c906108c | 4188 | |
a3f17187 | 4189 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4190 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4191 | return 1; |
c906108c SS |
4192 | } |
4193 | \f | |
4194 | static void | |
fba45db2 | 4195 | remote_kill (void) |
c906108c SS |
4196 | { |
4197 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4198 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4199 | if (kill_kludge) | |
4200 | { | |
4201 | kill_kludge = 0; | |
4202 | target_mourn_inferior (); | |
4203 | return; | |
4204 | } | |
4205 | ||
4206 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4207 | speaking terms with the remote system. */ | |
c5aa993b | 4208 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4209 | |
4210 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4211 | we do or not. For the existing stubs, kill is a noop. */ | |
4212 | target_mourn_inferior (); | |
4213 | } | |
4214 | ||
23860348 | 4215 | /* Async version of remote_kill. */ |
43ff13b4 | 4216 | static void |
fba45db2 | 4217 | remote_async_kill (void) |
43ff13b4 | 4218 | { |
23860348 | 4219 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4220 | if (target_is_async_p ()) |
2cd58942 | 4221 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4222 | |
4223 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4224 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4225 | if (kill_kludge) | |
4226 | { | |
4227 | kill_kludge = 0; | |
4228 | target_mourn_inferior (); | |
4229 | return; | |
4230 | } | |
4231 | ||
23860348 MS |
4232 | /* Use catch_errors so the user can quit from gdb even when we |
4233 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4234 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4235 | |
4236 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4237 | we do or not. For the existing stubs, kill is a noop. */ | |
4238 | target_mourn_inferior (); | |
4239 | } | |
4240 | ||
c906108c | 4241 | static void |
fba45db2 | 4242 | remote_mourn (void) |
c906108c SS |
4243 | { |
4244 | remote_mourn_1 (&remote_ops); | |
4245 | } | |
4246 | ||
53a5351d | 4247 | static void |
fba45db2 | 4248 | remote_async_mourn (void) |
53a5351d JM |
4249 | { |
4250 | remote_mourn_1 (&remote_async_ops); | |
4251 | } | |
4252 | ||
c906108c | 4253 | static void |
fba45db2 | 4254 | extended_remote_mourn (void) |
c906108c SS |
4255 | { |
4256 | /* We do _not_ want to mourn the target like this; this will | |
4257 | remove the extended remote target from the target stack, | |
802188a7 | 4258 | and the next time the user says "run" it'll fail. |
c906108c SS |
4259 | |
4260 | FIXME: What is the right thing to do here? */ | |
4261 | #if 0 | |
4262 | remote_mourn_1 (&extended_remote_ops); | |
4263 | #endif | |
4264 | } | |
4265 | ||
4266 | /* Worker function for remote_mourn. */ | |
4267 | static void | |
fba45db2 | 4268 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4269 | { |
4270 | unpush_target (target); | |
4271 | generic_mourn_inferior (); | |
4272 | } | |
4273 | ||
4274 | /* In the extended protocol we want to be able to do things like | |
4275 | "run" and have them basically work as expected. So we need | |
802188a7 | 4276 | a special create_inferior function. |
c906108c SS |
4277 | |
4278 | FIXME: One day add support for changing the exec file | |
4279 | we're debugging, arguments and an environment. */ | |
4280 | ||
4281 | static void | |
23860348 MS |
4282 | extended_remote_create_inferior (char *exec_file, char *args, |
4283 | char **env, int from_tty) | |
c906108c SS |
4284 | { |
4285 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4286 | the remote server. */ | |
4287 | remove_breakpoints (); | |
4288 | ||
4289 | /* Now restart the remote server. */ | |
4290 | extended_remote_restart (); | |
4291 | ||
4292 | /* Now put the breakpoints back in. This way we're safe if the | |
4293 | restart function works via a unix fork on the remote side. */ | |
4294 | insert_breakpoints (); | |
4295 | ||
4296 | /* Clean up from the last time we were running. */ | |
4297 | clear_proceed_status (); | |
c906108c SS |
4298 | } |
4299 | ||
23860348 | 4300 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4301 | static void |
23860348 MS |
4302 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4303 | char **env, int from_tty) | |
43ff13b4 JM |
4304 | { |
4305 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4306 | the remote server. */ | |
4307 | remove_breakpoints (); | |
4308 | ||
4309 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4310 | with the event loop. */ |
362646f5 | 4311 | if (target_can_async_p ()) |
2acceee2 | 4312 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4313 | |
4314 | /* Now restart the remote server. */ | |
4315 | extended_remote_restart (); | |
4316 | ||
4317 | /* Now put the breakpoints back in. This way we're safe if the | |
4318 | restart function works via a unix fork on the remote side. */ | |
4319 | insert_breakpoints (); | |
4320 | ||
4321 | /* Clean up from the last time we were running. */ | |
4322 | clear_proceed_status (); | |
43ff13b4 | 4323 | } |
c906108c | 4324 | \f |
c5aa993b | 4325 | |
aaab4dba | 4326 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4327 | instruction than other targets; in those use |
4328 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4329 | Also, bi-endian targets may define | |
4330 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4331 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4332 | just call the standard routines that are in mem-break.c. */ | |
4333 | ||
4334 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4335 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4336 | the ARCH-OS-tdep.c code can override the default. */ | |
4337 | ||
4338 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4339 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4340 | #endif |
4341 | ||
7fec2c59 | 4342 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4343 | |
4344 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4345 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4346 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4347 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4348 | #endif |
4349 | ||
7fec2c59 AC |
4350 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4351 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4352 | |
7fec2c59 | 4353 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4354 | |
8181d85f DJ |
4355 | /* Insert a breakpoint. On targets that have software breakpoint |
4356 | support, we ask the remote target to do the work; on targets | |
4357 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
4358 | |
4359 | static int | |
8181d85f | 4360 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4361 | { |
8181d85f | 4362 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4363 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4364 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4365 | int val; |
802188a7 | 4366 | #endif |
96baa820 | 4367 | |
d471ea57 AC |
4368 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4369 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4370 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4371 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4372 | |
444abaca | 4373 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4374 | { |
6d820c5c | 4375 | char *p = rs->buf; |
802188a7 | 4376 | |
96baa820 JM |
4377 | *(p++) = 'Z'; |
4378 | *(p++) = '0'; | |
4379 | *(p++) = ','; | |
8181d85f DJ |
4380 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
4381 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); | |
4382 | p += hexnumstr (p, addr); | |
4383 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 4384 | |
6d820c5c DJ |
4385 | putpkt (rs->buf); |
4386 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4387 | |
6d820c5c | 4388 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 4389 | { |
d471ea57 AC |
4390 | case PACKET_ERROR: |
4391 | return -1; | |
4392 | case PACKET_OK: | |
4393 | return 0; | |
4394 | case PACKET_UNKNOWN: | |
4395 | break; | |
96baa820 JM |
4396 | } |
4397 | } | |
c906108c | 4398 | |
802188a7 | 4399 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
4400 | bp_tgt->placed_size = bp_tgt->shadow_len = sizeof big_break_insn; |
4401 | val = target_read_memory (addr, bp_tgt->shadow_contents, bp_tgt->shadow_len); | |
c906108c SS |
4402 | |
4403 | if (val == 0) | |
4404 | { | |
d7449b42 | 4405 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4406 | val = target_write_memory (addr, (char *) big_break_insn, |
4407 | sizeof big_break_insn); | |
4408 | else | |
4409 | val = target_write_memory (addr, (char *) little_break_insn, | |
4410 | sizeof little_break_insn); | |
4411 | } | |
4412 | ||
4413 | return val; | |
4414 | #else | |
8181d85f | 4415 | return memory_insert_breakpoint (bp_tgt); |
7fec2c59 | 4416 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4417 | } |
4418 | ||
4419 | static int | |
8181d85f | 4420 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4421 | { |
8181d85f | 4422 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4423 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4424 | int bp_size; |
4425 | ||
444abaca | 4426 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4427 | { |
6d820c5c | 4428 | char *p = rs->buf; |
802188a7 | 4429 | |
96baa820 JM |
4430 | *(p++) = 'z'; |
4431 | *(p++) = '0'; | |
4432 | *(p++) = ','; | |
4433 | ||
8181d85f DJ |
4434 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
4435 | p += hexnumstr (p, addr); | |
4436 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 4437 | |
6d820c5c DJ |
4438 | putpkt (rs->buf); |
4439 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4440 | |
6d820c5c | 4441 | return (rs->buf[0] == 'E'); |
96baa820 JM |
4442 | } |
4443 | ||
7fec2c59 | 4444 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
4445 | return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents, |
4446 | bp_tgt->shadow_len); | |
c906108c | 4447 | #else |
8181d85f | 4448 | return memory_remove_breakpoint (bp_tgt); |
7fec2c59 | 4449 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4450 | } |
4451 | ||
d471ea57 AC |
4452 | static int |
4453 | watchpoint_to_Z_packet (int type) | |
4454 | { | |
4455 | switch (type) | |
4456 | { | |
4457 | case hw_write: | |
bb858e6a | 4458 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
4459 | break; |
4460 | case hw_read: | |
bb858e6a | 4461 | return Z_PACKET_READ_WP; |
d471ea57 AC |
4462 | break; |
4463 | case hw_access: | |
bb858e6a | 4464 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
4465 | break; |
4466 | default: | |
8e65ff28 | 4467 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4468 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
4469 | } |
4470 | } | |
4471 | ||
3c3bea1c | 4472 | static int |
fba45db2 | 4473 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4474 | { |
d01949b6 | 4475 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 4476 | char *p; |
d471ea57 | 4477 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4478 | |
444abaca | 4479 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
8a3fe4f8 | 4480 | error (_("Can't set hardware watchpoints without the '%s' (%s) packet."), |
444abaca DJ |
4481 | remote_protocol_packets[PACKET_Z0 + packet].name, |
4482 | remote_protocol_packets[PACKET_Z0 + packet].title); | |
802188a7 | 4483 | |
6d820c5c DJ |
4484 | sprintf (rs->buf, "Z%x,", packet); |
4485 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
4486 | addr = remote_address_masked (addr); |
4487 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4488 | sprintf (p, ",%x", len); |
802188a7 | 4489 | |
6d820c5c DJ |
4490 | putpkt (rs->buf); |
4491 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4492 | |
6d820c5c | 4493 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4494 | { |
4495 | case PACKET_ERROR: | |
4496 | case PACKET_UNKNOWN: | |
4497 | return -1; | |
4498 | case PACKET_OK: | |
4499 | return 0; | |
4500 | } | |
8e65ff28 | 4501 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4502 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
4503 | } |
4504 | ||
d471ea57 | 4505 | |
3c3bea1c | 4506 | static int |
fba45db2 | 4507 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4508 | { |
d01949b6 | 4509 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 4510 | char *p; |
d471ea57 AC |
4511 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4512 | ||
444abaca | 4513 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
8a3fe4f8 | 4514 | error (_("Can't clear hardware watchpoints without the '%s' (%s) packet."), |
444abaca DJ |
4515 | remote_protocol_packets[PACKET_Z0 + packet].name, |
4516 | remote_protocol_packets[PACKET_Z0 + packet].title); | |
802188a7 | 4517 | |
6d820c5c DJ |
4518 | sprintf (rs->buf, "z%x,", packet); |
4519 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
4520 | addr = remote_address_masked (addr); |
4521 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4522 | sprintf (p, ",%x", len); |
6d820c5c DJ |
4523 | putpkt (rs->buf); |
4524 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4525 | |
6d820c5c | 4526 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4527 | { |
4528 | case PACKET_ERROR: | |
4529 | case PACKET_UNKNOWN: | |
4530 | return -1; | |
4531 | case PACKET_OK: | |
4532 | return 0; | |
4533 | } | |
8e65ff28 | 4534 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4535 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
4536 | } |
4537 | ||
3c3bea1c | 4538 | |
501eef12 AC |
4539 | int remote_hw_watchpoint_limit = -1; |
4540 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4541 | |
b9362cc7 | 4542 | static int |
3c3bea1c | 4543 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4544 | { |
3c3bea1c GS |
4545 | if (type == bp_hardware_breakpoint) |
4546 | { | |
4547 | if (remote_hw_breakpoint_limit == 0) | |
4548 | return 0; | |
501eef12 AC |
4549 | else if (remote_hw_breakpoint_limit < 0) |
4550 | return 1; | |
3c3bea1c GS |
4551 | else if (cnt <= remote_hw_breakpoint_limit) |
4552 | return 1; | |
4553 | } | |
4554 | else | |
4555 | { | |
4556 | if (remote_hw_watchpoint_limit == 0) | |
4557 | return 0; | |
501eef12 AC |
4558 | else if (remote_hw_watchpoint_limit < 0) |
4559 | return 1; | |
3c3bea1c GS |
4560 | else if (ot) |
4561 | return -1; | |
4562 | else if (cnt <= remote_hw_watchpoint_limit) | |
4563 | return 1; | |
4564 | } | |
4565 | return -1; | |
4566 | } | |
4567 | ||
b9362cc7 | 4568 | static int |
3c3bea1c GS |
4569 | remote_stopped_by_watchpoint (void) |
4570 | { | |
4571 | return remote_stopped_by_watchpoint_p; | |
4572 | } | |
4573 | ||
7270d8f2 OF |
4574 | extern int stepped_after_stopped_by_watchpoint; |
4575 | ||
4aa7a7f5 JJ |
4576 | static int |
4577 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4578 | { |
4aa7a7f5 | 4579 | int rc = 0; |
7270d8f2 OF |
4580 | if (remote_stopped_by_watchpoint () |
4581 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4582 | { |
4583 | *addr_p = remote_watch_data_address; | |
4584 | rc = 1; | |
4585 | } | |
4586 | ||
4587 | return rc; | |
3c3bea1c GS |
4588 | } |
4589 | ||
4590 | ||
4591 | static int | |
8181d85f | 4592 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 4593 | { |
8181d85f | 4594 | CORE_ADDR addr; |
d01949b6 | 4595 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4596 | char *p = rs->buf; |
802188a7 | 4597 | |
c8189ed1 | 4598 | /* The length field should be set to the size of a breakpoint |
8181d85f | 4599 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 4600 | |
8181d85f | 4601 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 4602 | |
444abaca | 4603 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
8a3fe4f8 | 4604 | error (_("Can't set hardware breakpoint without the '%s' (%s) packet."), |
444abaca DJ |
4605 | remote_protocol_packets[PACKET_Z1].name, |
4606 | remote_protocol_packets[PACKET_Z1].title); | |
802188a7 | 4607 | |
96baa820 JM |
4608 | *(p++) = 'Z'; |
4609 | *(p++) = '1'; | |
4610 | *(p++) = ','; | |
802188a7 | 4611 | |
8181d85f | 4612 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 4613 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 4614 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 4615 | |
6d820c5c DJ |
4616 | putpkt (rs->buf); |
4617 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4618 | |
6d820c5c | 4619 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4620 | { |
4621 | case PACKET_ERROR: | |
4622 | case PACKET_UNKNOWN: | |
4623 | return -1; | |
4624 | case PACKET_OK: | |
4625 | return 0; | |
4626 | } | |
8e65ff28 | 4627 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4628 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
4629 | } |
4630 | ||
d471ea57 | 4631 | |
802188a7 | 4632 | static int |
8181d85f | 4633 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 4634 | { |
8181d85f | 4635 | CORE_ADDR addr; |
d01949b6 | 4636 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4637 | char *p = rs->buf; |
c8189ed1 | 4638 | |
444abaca | 4639 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
8a3fe4f8 | 4640 | error (_("Can't clear hardware breakpoint without the '%s' (%s) packet."), |
444abaca DJ |
4641 | remote_protocol_packets[PACKET_Z1].name, |
4642 | remote_protocol_packets[PACKET_Z1].title); | |
802188a7 | 4643 | |
96baa820 JM |
4644 | *(p++) = 'z'; |
4645 | *(p++) = '1'; | |
4646 | *(p++) = ','; | |
802188a7 | 4647 | |
8181d85f | 4648 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 4649 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 4650 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 4651 | |
6d820c5c DJ |
4652 | putpkt (rs->buf); |
4653 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 4654 | |
6d820c5c | 4655 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4656 | { |
4657 | case PACKET_ERROR: | |
4658 | case PACKET_UNKNOWN: | |
4659 | return -1; | |
4660 | case PACKET_OK: | |
4661 | return 0; | |
4662 | } | |
8e65ff28 | 4663 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4664 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 4665 | } |
96baa820 | 4666 | |
c906108c SS |
4667 | /* Some targets are only capable of doing downloads, and afterwards |
4668 | they switch to the remote serial protocol. This function provides | |
4669 | a clean way to get from the download target to the remote target. | |
4670 | It's basically just a wrapper so that we don't have to expose any | |
4671 | of the internal workings of remote.c. | |
4672 | ||
4673 | Prior to calling this routine, you should shutdown the current | |
4674 | target code, else you will get the "A program is being debugged | |
4675 | already..." message. Usually a call to pop_target() suffices. */ | |
4676 | ||
4677 | void | |
fba45db2 | 4678 | push_remote_target (char *name, int from_tty) |
c906108c | 4679 | { |
a3f17187 | 4680 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
4681 | remote_open (name, from_tty); |
4682 | } | |
4683 | ||
23860348 | 4684 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 4685 | |
c5aa993b JM |
4686 | static unsigned long crc32_table[256] = |
4687 | {0, 0}; | |
c906108c SS |
4688 | |
4689 | static unsigned long | |
fba45db2 | 4690 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4691 | { |
c5aa993b | 4692 | if (!crc32_table[1]) |
c906108c | 4693 | { |
23860348 | 4694 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
4695 | int i, j; |
4696 | unsigned int c; | |
4697 | ||
4698 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4699 | { |
4700 | for (c = i << 24, j = 8; j > 0; --j) | |
4701 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4702 | crc32_table[i] = c; | |
4703 | } | |
c906108c SS |
4704 | } |
4705 | ||
4706 | while (len--) | |
4707 | { | |
4708 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4709 | buf++; | |
4710 | } | |
4711 | return crc; | |
4712 | } | |
4713 | ||
4714 | /* compare-sections command | |
4715 | ||
4716 | With no arguments, compares each loadable section in the exec bfd | |
4717 | with the same memory range on the target, and reports mismatches. | |
4718 | Useful for verifying the image on the target against the exec file. | |
4719 | Depends on the target understanding the new "qCRC:" request. */ | |
4720 | ||
e514a9d6 JM |
4721 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4722 | target method (target verify memory) and generic version of the | |
4723 | actual command. This will allow other high-level code (especially | |
23860348 | 4724 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 4725 | |
c906108c | 4726 | static void |
fba45db2 | 4727 | compare_sections_command (char *args, int from_tty) |
c906108c | 4728 | { |
d01949b6 | 4729 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4730 | asection *s; |
4731 | unsigned long host_crc, target_crc; | |
4732 | extern bfd *exec_bfd; | |
4733 | struct cleanup *old_chain; | |
085dd6e6 JM |
4734 | char *tmp; |
4735 | char *sectdata; | |
ce359b09 | 4736 | const char *sectname; |
c906108c SS |
4737 | bfd_size_type size; |
4738 | bfd_vma lma; | |
4739 | int matched = 0; | |
4740 | int mismatched = 0; | |
4741 | ||
4742 | if (!exec_bfd) | |
8a3fe4f8 | 4743 | error (_("command cannot be used without an exec file")); |
c906108c SS |
4744 | if (!current_target.to_shortname || |
4745 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 4746 | error (_("command can only be used with remote target")); |
c906108c | 4747 | |
c5aa993b | 4748 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4749 | { |
4750 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4751 | continue; /* skip non-loadable section */ |
c906108c | 4752 | |
2c500098 | 4753 | size = bfd_get_section_size (s); |
c906108c | 4754 | if (size == 0) |
c5aa993b | 4755 | continue; /* skip zero-length section */ |
c906108c | 4756 | |
ce359b09 | 4757 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4758 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4759 | continue; /* not the section selected by user */ |
c906108c | 4760 | |
c5aa993b | 4761 | matched = 1; /* do this section */ |
c906108c | 4762 | lma = s->lma; |
23860348 | 4763 | /* FIXME: assumes lma can fit into long. */ |
6d820c5c | 4764 | xsnprintf (rs->buf, rs->remote_packet_size, "qCRC:%lx,%lx", |
ecbc58df | 4765 | (long) lma, (long) size); |
6d820c5c | 4766 | putpkt (rs->buf); |
c906108c | 4767 | |
23860348 MS |
4768 | /* Be clever; compute the host_crc before waiting for target |
4769 | reply. */ | |
c906108c | 4770 | sectdata = xmalloc (size); |
b8c9b27d | 4771 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4772 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4773 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4774 | ||
6d820c5c DJ |
4775 | getpkt (&rs->buf, &rs->buf_size, 0); |
4776 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 4777 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 4778 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 4779 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 4780 | error (_("remote target does not support this operation")); |
c906108c | 4781 | |
6d820c5c | 4782 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
4783 | target_crc = target_crc * 16 + fromhex (*tmp); |
4784 | ||
d4f3574e SS |
4785 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4786 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4787 | if (host_crc == target_crc) |
4788 | printf_filtered ("matched.\n"); | |
4789 | else | |
c5aa993b JM |
4790 | { |
4791 | printf_filtered ("MIS-MATCHED!\n"); | |
4792 | mismatched++; | |
4793 | } | |
c906108c SS |
4794 | |
4795 | do_cleanups (old_chain); | |
4796 | } | |
4797 | if (mismatched > 0) | |
8a3fe4f8 AC |
4798 | warning (_("One or more sections of the remote executable does not match\n\ |
4799 | the loaded file\n")); | |
c906108c | 4800 | if (args && !matched) |
a3f17187 | 4801 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
4802 | } |
4803 | ||
1e3ff5ad | 4804 | static LONGEST |
4b8a223f | 4805 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
4806 | const char *annex, gdb_byte *readbuf, |
4807 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 4808 | { |
d01949b6 | 4809 | struct remote_state *rs = get_remote_state (); |
c906108c | 4810 | int i; |
6d820c5c | 4811 | char *p2; |
1e3ff5ad | 4812 | char query_type; |
c906108c | 4813 | |
21e3b9b9 DJ |
4814 | /* Handle memory using remote_xfer_memory. */ |
4815 | if (object == TARGET_OBJECT_MEMORY) | |
4816 | { | |
4817 | int xfered; | |
4818 | errno = 0; | |
4819 | ||
4820 | if (writebuf != NULL) | |
4821 | { | |
4822 | void *buffer = xmalloc (len); | |
4823 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4824 | memcpy (buffer, writebuf, len); | |
4825 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4826 | do_cleanups (cleanup); | |
4827 | } | |
4828 | else | |
4829 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4830 | ||
4831 | if (xfered > 0) | |
4832 | return xfered; | |
4833 | else if (xfered == 0 && errno == 0) | |
4834 | return 0; | |
4835 | else | |
4836 | return -1; | |
4837 | } | |
4838 | ||
4b8a223f AC |
4839 | /* Only handle reads. */ |
4840 | if (writebuf != NULL || readbuf == NULL) | |
4841 | return -1; | |
4842 | ||
1e3ff5ad AC |
4843 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4844 | objects!!! Instead specify new query packets. */ | |
4845 | switch (object) | |
c906108c | 4846 | { |
1e3ff5ad AC |
4847 | case TARGET_OBJECT_KOD: |
4848 | query_type = 'K'; | |
4849 | break; | |
4850 | case TARGET_OBJECT_AVR: | |
4851 | query_type = 'R'; | |
4852 | break; | |
802188a7 RM |
4853 | |
4854 | case TARGET_OBJECT_AUXV: | |
444abaca | 4855 | if (remote_protocol_packets[PACKET_qPart_auxv].support != PACKET_DISABLE) |
802188a7 RM |
4856 | { |
4857 | unsigned int total = 0; | |
4858 | while (len > 0) | |
4859 | { | |
4860 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
6d820c5c | 4861 | snprintf (rs->buf, rs->remote_packet_size, |
802188a7 RM |
4862 | "qPart:auxv:read::%s,%s", |
4863 | phex_nz (offset, sizeof offset), | |
4864 | phex_nz (n, sizeof n)); | |
6d820c5c | 4865 | i = putpkt (rs->buf); |
802188a7 RM |
4866 | if (i < 0) |
4867 | return total > 0 ? total : i; | |
6d820c5c DJ |
4868 | rs->buf[0] = '\0'; |
4869 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4870 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qPart_auxv]) | |
444abaca | 4871 | != PACKET_OK) |
802188a7 | 4872 | return total > 0 ? total : -1; |
6d820c5c | 4873 | if (strcmp (rs->buf, "OK") == 0) |
802188a7 RM |
4874 | break; /* Got EOF indicator. */ |
4875 | /* Got some data. */ | |
6d820c5c | 4876 | i = hex2bin (rs->buf, readbuf, len); |
802188a7 RM |
4877 | if (i > 0) |
4878 | { | |
4879 | readbuf = (void *) ((char *) readbuf + i); | |
4880 | offset += i; | |
4881 | len -= i; | |
4882 | total += i; | |
4883 | } | |
4884 | } | |
4885 | return total; | |
4886 | } | |
4887 | return -1; | |
4888 | ||
1e3ff5ad | 4889 | default: |
c906108c SS |
4890 | return -1; |
4891 | } | |
4892 | ||
4b8a223f | 4893 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 4894 | buffer size. */ |
4b8a223f | 4895 | if (offset == 0 && len == 0) |
1e3ff5ad | 4896 | return (rs->remote_packet_size); |
24b06219 MK |
4897 | /* Minimum outbuf size is RS->remote_packet_size. If LEN is not |
4898 | large enough let the caller deal with it. */ | |
4899 | if (len < rs->remote_packet_size) | |
1e3ff5ad AC |
4900 | return -1; |
4901 | len = rs->remote_packet_size; | |
4902 | ||
23860348 | 4903 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 4904 | if (!remote_desc) |
8a3fe4f8 | 4905 | error (_("remote query is only available after target open")); |
c906108c | 4906 | |
1e3ff5ad | 4907 | gdb_assert (annex != NULL); |
4b8a223f | 4908 | gdb_assert (readbuf != NULL); |
c906108c | 4909 | |
6d820c5c | 4910 | p2 = rs->buf; |
c906108c SS |
4911 | *p2++ = 'q'; |
4912 | *p2++ = query_type; | |
4913 | ||
23860348 MS |
4914 | /* We used one buffer char for the remote protocol q command and |
4915 | another for the query type. As the remote protocol encapsulation | |
4916 | uses 4 chars plus one extra in case we are debugging | |
4917 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
4918 | string. */ | |
c906108c | 4919 | i = 0; |
24b06219 | 4920 | while (annex[i] && (i < (rs->remote_packet_size - 8))) |
c906108c | 4921 | { |
1e3ff5ad AC |
4922 | /* Bad caller may have sent forbidden characters. */ |
4923 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
4924 | *p2++ = annex[i]; | |
c906108c SS |
4925 | i++; |
4926 | } | |
1e3ff5ad AC |
4927 | *p2 = '\0'; |
4928 | gdb_assert (annex[i] == '\0'); | |
c906108c | 4929 | |
6d820c5c | 4930 | i = putpkt (rs->buf); |
c5aa993b JM |
4931 | if (i < 0) |
4932 | return i; | |
c906108c | 4933 | |
6d820c5c DJ |
4934 | getpkt (&rs->buf, &rs->buf_size, 0); |
4935 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 4936 | |
cfd77fa1 | 4937 | return strlen ((char *) readbuf); |
c906108c SS |
4938 | } |
4939 | ||
96baa820 JM |
4940 | static void |
4941 | remote_rcmd (char *command, | |
d9fcf2fb | 4942 | struct ui_file *outbuf) |
96baa820 | 4943 | { |
d01949b6 | 4944 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4945 | char *buf = rs->buf; |
96baa820 JM |
4946 | char *p = buf; |
4947 | ||
4948 | if (!remote_desc) | |
8a3fe4f8 | 4949 | error (_("remote rcmd is only available after target open")); |
96baa820 | 4950 | |
23860348 | 4951 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
4952 | if (command == NULL) |
4953 | command = ""; | |
4954 | ||
23860348 | 4955 | /* The query prefix. */ |
96baa820 JM |
4956 | strcpy (buf, "qRcmd,"); |
4957 | p = strchr (buf, '\0'); | |
4958 | ||
24b06219 | 4959 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > rs->remote_packet_size) |
8a3fe4f8 | 4960 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 4961 | |
23860348 | 4962 | /* Encode the actual command. */ |
cfd77fa1 | 4963 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 4964 | |
6d820c5c | 4965 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 4966 | error (_("Communication problem with target.")); |
96baa820 JM |
4967 | |
4968 | /* get/display the response */ | |
4969 | while (1) | |
4970 | { | |
23860348 | 4971 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
96baa820 | 4972 | buf[0] = '\0'; |
6d820c5c | 4973 | getpkt (&rs->buf, &rs->buf_size, 0); |
96baa820 | 4974 | if (buf[0] == '\0') |
8a3fe4f8 | 4975 | error (_("Target does not support this command.")); |
96baa820 JM |
4976 | if (buf[0] == 'O' && buf[1] != 'K') |
4977 | { | |
23860348 | 4978 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
4979 | continue; |
4980 | } | |
4981 | if (strcmp (buf, "OK") == 0) | |
4982 | break; | |
7be570e7 JM |
4983 | if (strlen (buf) == 3 && buf[0] == 'E' |
4984 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4985 | { | |
8a3fe4f8 | 4986 | error (_("Protocol error with Rcmd")); |
7be570e7 | 4987 | } |
96baa820 JM |
4988 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4989 | { | |
4990 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4991 | fputc_unfiltered (c, outbuf); | |
4992 | } | |
4993 | break; | |
4994 | } | |
4995 | } | |
4996 | ||
c906108c | 4997 | static void |
fba45db2 | 4998 | packet_command (char *args, int from_tty) |
c906108c | 4999 | { |
d01949b6 | 5000 | struct remote_state *rs = get_remote_state (); |
c906108c | 5001 | |
c5aa993b | 5002 | if (!remote_desc) |
8a3fe4f8 | 5003 | error (_("command can only be used with remote target")); |
c906108c | 5004 | |
c5aa993b | 5005 | if (!args) |
8a3fe4f8 | 5006 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5007 | |
5008 | puts_filtered ("sending: "); | |
5009 | print_packet (args); | |
5010 | puts_filtered ("\n"); | |
5011 | putpkt (args); | |
5012 | ||
6d820c5c | 5013 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5014 | puts_filtered ("received: "); |
6d820c5c | 5015 | print_packet (rs->buf); |
c906108c SS |
5016 | puts_filtered ("\n"); |
5017 | } | |
5018 | ||
5019 | #if 0 | |
23860348 | 5020 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5021 | |
a14ed312 | 5022 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5023 | |
a14ed312 | 5024 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5025 | |
a14ed312 | 5026 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5027 | |
a14ed312 | 5028 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5029 | |
23860348 | 5030 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5031 | |
a14ed312 | 5032 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5033 | |
23860348 | 5034 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5035 | |
a14ed312 | 5036 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5037 | |
a14ed312 | 5038 | static void init_remote_threadtests (void); |
c906108c | 5039 | |
23860348 | 5040 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5041 | |
5042 | static void | |
fba45db2 | 5043 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5044 | { |
5045 | int sample_thread = SAMPLE_THREAD; | |
5046 | ||
a3f17187 | 5047 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5048 | set_thread (sample_thread, 1); |
5049 | } | |
5050 | ||
5051 | ||
5052 | static void | |
fba45db2 | 5053 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5054 | { |
5055 | int sample_thread = SAMPLE_THREAD; | |
5056 | ||
39f77062 | 5057 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5058 | printf_filtered ("PASS: Thread alive test\n"); |
5059 | else | |
5060 | printf_filtered ("FAIL: Thread alive test\n"); | |
5061 | } | |
5062 | ||
23860348 | 5063 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5064 | |
5065 | void | |
fba45db2 | 5066 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5067 | { |
5068 | char hexid[20]; | |
5069 | ||
23860348 | 5070 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5071 | hexid[16] = 0; |
5072 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5073 | } | |
5074 | ||
5075 | static void | |
fba45db2 | 5076 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5077 | { |
5078 | int startflag = 1; | |
5079 | threadref nextthread; | |
5080 | int done, result_count; | |
5081 | threadref threadlist[3]; | |
5082 | ||
5083 | printf_filtered ("Remote Threadlist test\n"); | |
5084 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5085 | &result_count, &threadlist[0])) | |
5086 | printf_filtered ("FAIL: threadlist test\n"); | |
5087 | else | |
5088 | { | |
5089 | threadref *scan = threadlist; | |
5090 | threadref *limit = scan + result_count; | |
5091 | ||
5092 | while (scan < limit) | |
5093 | output_threadid (" thread ", scan++); | |
5094 | } | |
5095 | } | |
5096 | ||
5097 | void | |
fba45db2 | 5098 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5099 | { |
5100 | output_threadid ("Threadid: ", &info->threadid); | |
5101 | printf_filtered ("Name: %s\n ", info->shortname); | |
5102 | printf_filtered ("State: %s\n", info->display); | |
5103 | printf_filtered ("other: %s\n\n", info->more_display); | |
5104 | } | |
5105 | ||
5106 | int | |
fba45db2 | 5107 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5108 | { |
5109 | int result; | |
5110 | int set; | |
5111 | struct gdb_ext_thread_info threadinfo; | |
5112 | ||
5113 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5114 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5115 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5116 | display_thread_info (&threadinfo); | |
5117 | return result; | |
5118 | } | |
5119 | ||
5120 | static void | |
fba45db2 | 5121 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5122 | { |
5123 | int athread = SAMPLE_THREAD; | |
5124 | threadref thread; | |
5125 | int set; | |
5126 | ||
5127 | int_to_threadref (&thread, athread); | |
5128 | printf_filtered ("Remote Threadinfo test\n"); | |
5129 | if (!get_and_display_threadinfo (&thread)) | |
5130 | printf_filtered ("FAIL cannot get thread info\n"); | |
5131 | } | |
5132 | ||
5133 | static int | |
fba45db2 | 5134 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5135 | { |
5136 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5137 | return get_and_display_threadinfo (ref); | |
5138 | } | |
5139 | ||
5140 | static void | |
fba45db2 | 5141 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5142 | { |
5143 | printf_filtered ("Remote Threadlist update test\n"); | |
5144 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5145 | } | |
5146 | ||
5147 | static void | |
5148 | init_remote_threadtests (void) | |
5149 | { | |
1bedd215 AC |
5150 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5151 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5152 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5153 | _("Fetch and display info about one thread")); |
c906108c | 5154 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5155 | _("Test setting to a different thread")); |
c906108c | 5156 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5157 | _("Iterate through updating all remote thread info")); |
c906108c | 5158 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5159 | _(" Remote thread alive test ")); |
c906108c SS |
5160 | } |
5161 | ||
5162 | #endif /* 0 */ | |
5163 | ||
f3fb8c85 MS |
5164 | /* Convert a thread ID to a string. Returns the string in a static |
5165 | buffer. */ | |
5166 | ||
5167 | static char * | |
39f77062 | 5168 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 5169 | { |
fd0a2a6f | 5170 | static char buf[32]; |
f3fb8c85 | 5171 | |
6c76e4a1 | 5172 | xsnprintf (buf, sizeof buf, "thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
5173 | return buf; |
5174 | } | |
5175 | ||
38691318 KB |
5176 | /* Get the address of the thread local variable in OBJFILE which is |
5177 | stored at OFFSET within the thread local storage for thread PTID. */ | |
5178 | ||
5179 | static CORE_ADDR | |
5180 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
5181 | { | |
444abaca | 5182 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
5183 | { |
5184 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 5185 | char *p = rs->buf; |
571dd617 | 5186 | enum packet_result result; |
38691318 KB |
5187 | |
5188 | strcpy (p, "qGetTLSAddr:"); | |
5189 | p += strlen (p); | |
5190 | p += hexnumstr (p, PIDGET (ptid)); | |
5191 | *p++ = ','; | |
5192 | p += hexnumstr (p, offset); | |
5193 | *p++ = ','; | |
5194 | p += hexnumstr (p, lm); | |
5195 | *p++ = '\0'; | |
5196 | ||
6d820c5c DJ |
5197 | putpkt (rs->buf); |
5198 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5199 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 5200 | if (result == PACKET_OK) |
38691318 KB |
5201 | { |
5202 | ULONGEST result; | |
5203 | ||
6d820c5c | 5204 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
5205 | return result; |
5206 | } | |
571dd617 | 5207 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
5208 | throw_error (TLS_GENERIC_ERROR, |
5209 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 5210 | else |
109c3e39 AC |
5211 | throw_error (TLS_GENERIC_ERROR, |
5212 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
5213 | } |
5214 | else | |
109c3e39 AC |
5215 | throw_error (TLS_GENERIC_ERROR, |
5216 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
5217 | /* Not reached. */ |
5218 | return 0; | |
5219 | } | |
5220 | ||
c906108c | 5221 | static void |
fba45db2 | 5222 | init_remote_ops (void) |
c906108c | 5223 | { |
c5aa993b | 5224 | remote_ops.to_shortname = "remote"; |
c906108c | 5225 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5226 | remote_ops.to_doc = |
c906108c | 5227 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5228 | Specify the serial device it is connected to\n\ |
5229 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5230 | remote_ops.to_open = remote_open; |
5231 | remote_ops.to_close = remote_close; | |
c906108c | 5232 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5233 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5234 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5235 | remote_ops.to_wait = remote_wait; |
5236 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5237 | remote_ops.to_store_registers = remote_store_registers; | |
5238 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5239 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5240 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5241 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5242 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5243 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5244 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5245 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5246 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5247 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5248 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5249 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5250 | remote_ops.to_kill = remote_kill; |
5251 | remote_ops.to_load = generic_load; | |
c906108c SS |
5252 | remote_ops.to_mourn_inferior = remote_mourn; |
5253 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5254 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5255 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5256 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5257 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5258 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5259 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 5260 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 5261 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5262 | remote_ops.to_has_all_memory = 1; |
5263 | remote_ops.to_has_memory = 1; | |
5264 | remote_ops.to_has_stack = 1; | |
5265 | remote_ops.to_has_registers = 1; | |
5266 | remote_ops.to_has_execution = 1; | |
5267 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5268 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5269 | } |
5270 | ||
5271 | /* Set up the extended remote vector by making a copy of the standard | |
5272 | remote vector and adding to it. */ | |
5273 | ||
5274 | static void | |
fba45db2 | 5275 | init_extended_remote_ops (void) |
c906108c SS |
5276 | { |
5277 | extended_remote_ops = remote_ops; | |
5278 | ||
0f71a2f6 | 5279 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5280 | extended_remote_ops.to_longname = |
c906108c | 5281 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5282 | extended_remote_ops.to_doc = |
c906108c SS |
5283 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5284 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5285 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5286 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5287 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5288 | } |
5289 | ||
6426a772 JM |
5290 | static int |
5291 | remote_can_async_p (void) | |
5292 | { | |
23860348 | 5293 | /* We're async whenever the serial device is. */ |
2cd58942 | 5294 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5295 | } |
5296 | ||
5297 | static int | |
5298 | remote_is_async_p (void) | |
5299 | { | |
23860348 | 5300 | /* We're async whenever the serial device is. */ |
2cd58942 | 5301 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5302 | } |
5303 | ||
2acceee2 JM |
5304 | /* Pass the SERIAL event on and up to the client. One day this code |
5305 | will be able to delay notifying the client of an event until the | |
23860348 | 5306 | point where an entire packet has been received. */ |
2acceee2 | 5307 | |
23860348 MS |
5308 | static void (*async_client_callback) (enum inferior_event_type event_type, |
5309 | void *context); | |
2acceee2 JM |
5310 | static void *async_client_context; |
5311 | static serial_event_ftype remote_async_serial_handler; | |
5312 | ||
6426a772 | 5313 | static void |
819cc324 | 5314 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5315 | { |
2acceee2 JM |
5316 | /* Don't propogate error information up to the client. Instead let |
5317 | the client find out about the error by querying the target. */ | |
5318 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5319 | } | |
5320 | ||
5321 | static void | |
23860348 MS |
5322 | remote_async (void (*callback) (enum inferior_event_type event_type, |
5323 | void *context), void *context) | |
2acceee2 | 5324 | { |
ed9a39eb | 5325 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5326 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5327 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5328 | |
2acceee2 JM |
5329 | if (callback != NULL) |
5330 | { | |
2cd58942 | 5331 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5332 | async_client_callback = callback; |
5333 | async_client_context = context; | |
5334 | } | |
5335 | else | |
2cd58942 | 5336 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5337 | } |
5338 | ||
43ff13b4 JM |
5339 | /* Target async and target extended-async. |
5340 | ||
5341 | This are temporary targets, until it is all tested. Eventually | |
5342 | async support will be incorporated int the usual 'remote' | |
23860348 | 5343 | target. */ |
43ff13b4 JM |
5344 | |
5345 | static void | |
c2d11a7d | 5346 | init_remote_async_ops (void) |
43ff13b4 JM |
5347 | { |
5348 | remote_async_ops.to_shortname = "async"; | |
23860348 MS |
5349 | remote_async_ops.to_longname = |
5350 | "Remote serial target in async version of the gdb-specific protocol"; | |
c5aa993b | 5351 | remote_async_ops.to_doc = |
43ff13b4 JM |
5352 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5353 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5354 | remote_async_ops.to_open = remote_async_open; |
5355 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5356 | remote_async_ops.to_detach = remote_detach; |
5357 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5358 | remote_async_ops.to_resume = remote_async_resume; |
5359 | remote_async_ops.to_wait = remote_async_wait; | |
5360 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5361 | remote_async_ops.to_store_registers = remote_store_registers; | |
5362 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5363 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5364 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5365 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5366 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5367 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5368 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5369 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5370 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5371 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5372 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5373 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5374 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5375 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5376 | remote_async_ops.to_kill = remote_async_kill; |
5377 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5378 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5379 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5380 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5381 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5382 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5383 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5384 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5385 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5386 | remote_async_ops.to_stratum = process_stratum; |
5387 | remote_async_ops.to_has_all_memory = 1; | |
5388 | remote_async_ops.to_has_memory = 1; | |
5389 | remote_async_ops.to_has_stack = 1; | |
5390 | remote_async_ops.to_has_registers = 1; | |
5391 | remote_async_ops.to_has_execution = 1; | |
5392 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5393 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5394 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5395 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5396 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5397 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5398 | } |
5399 | ||
5400 | /* Set up the async extended remote vector by making a copy of the standard | |
5401 | remote vector and adding to it. */ | |
5402 | ||
5403 | static void | |
c2d11a7d | 5404 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5405 | { |
5406 | extended_async_remote_ops = remote_async_ops; | |
5407 | ||
5408 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5409 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5410 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5411 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5412 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5413 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5414 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5415 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5416 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5417 | } | |
5418 | ||
37a105a1 DJ |
5419 | static struct cmd_list_element *remote_set_cmdlist; |
5420 | static struct cmd_list_element *remote_show_cmdlist; | |
5421 | ||
5a2468f5 | 5422 | static void |
c2d11a7d | 5423 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5424 | { |
5a2468f5 JM |
5425 | } |
5426 | ||
d471ea57 AC |
5427 | static void |
5428 | show_remote_cmd (char *args, int from_tty) | |
5429 | { | |
37a105a1 DJ |
5430 | /* We can't just use cmd_show_list here, because we want to skip |
5431 | the redundant "show remote Z-packet". */ | |
5432 | struct cleanup *showlist_chain; | |
5433 | struct cmd_list_element *list = remote_show_cmdlist; | |
5434 | ||
5435 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
5436 | for (; list != NULL; list = list->next) | |
5437 | if (strcmp (list->name, "Z-packet") == 0) | |
5438 | continue; | |
5439 | else if (list->type == show_cmd) | |
5440 | { | |
5441 | struct cleanup *option_chain | |
5442 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
5443 | ui_out_field_string (uiout, "name", list->name); | |
5444 | ui_out_text (uiout, ": "); | |
5445 | do_setshow_command ((char *) NULL, from_tty, list); | |
5446 | /* Close the tuple. */ | |
5447 | do_cleanups (option_chain); | |
5448 | } | |
d471ea57 | 5449 | } |
5a2468f5 | 5450 | |
0f71a2f6 | 5451 | static void |
fba45db2 | 5452 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5453 | { |
d696208f | 5454 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5455 | } |
5456 | ||
23860348 | 5457 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
5458 | static void (*remote_new_objfile_chain) (struct objfile *); |
5459 | ||
23860348 | 5460 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
5461 | static void |
5462 | remote_new_objfile (struct objfile *objfile) | |
5463 | { | |
23860348 | 5464 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
5465 | { |
5466 | remote_check_symbols (objfile); | |
5467 | } | |
23860348 | 5468 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
5469 | if (remote_new_objfile_chain != 0 && |
5470 | remote_desc == 0) | |
5471 | remote_new_objfile_chain (objfile); | |
5472 | } | |
5473 | ||
c906108c | 5474 | void |
fba45db2 | 5475 | _initialize_remote (void) |
c906108c | 5476 | { |
0f71a2f6 | 5477 | /* architecture specific data */ |
23860348 MS |
5478 | remote_gdbarch_data_handle = |
5479 | gdbarch_data_register_post_init (init_remote_state); | |
d01949b6 AC |
5480 | |
5481 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5482 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5483 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5484 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5485 | |
c906108c SS |
5486 | init_remote_ops (); |
5487 | add_target (&remote_ops); | |
5488 | ||
5489 | init_extended_remote_ops (); | |
5490 | add_target (&extended_remote_ops); | |
cce74817 | 5491 | |
43ff13b4 JM |
5492 | init_remote_async_ops (); |
5493 | add_target (&remote_async_ops); | |
5494 | ||
5495 | init_extended_async_remote_ops (); | |
5496 | add_target (&extended_async_remote_ops); | |
5497 | ||
dc8acb97 | 5498 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5499 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5500 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5501 | |
c906108c SS |
5502 | #if 0 |
5503 | init_remote_threadtests (); | |
5504 | #endif | |
5505 | ||
23860348 | 5506 | /* set/show remote ... */ |
d471ea57 | 5507 | |
1bedd215 | 5508 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
5509 | Remote protocol specific variables\n\ |
5510 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5511 | the packets being used"), |
cff3e48b | 5512 | &remote_set_cmdlist, "set remote ", |
23860348 | 5513 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 5514 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
5515 | Remote protocol specific variables\n\ |
5516 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5517 | the packets being used"), |
cff3e48b | 5518 | &remote_show_cmdlist, "show remote ", |
23860348 | 5519 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 5520 | |
1a966eab AC |
5521 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
5522 | Compare section data on target to the exec file.\n\ | |
5523 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
5524 | &cmdlist); |
5525 | ||
1a966eab AC |
5526 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
5527 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
5528 | maintenance packet TEXT\n\ |
5529 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5530 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5531 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 5532 | terminating `#' character and checksum."), |
c906108c SS |
5533 | &maintenancelist); |
5534 | ||
7915a72c AC |
5535 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
5536 | Set whether to send break if interrupted."), _("\ | |
5537 | Show whether to send break if interrupted."), _("\ | |
5538 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 5539 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 5540 | &setlist, &showlist); |
c906108c | 5541 | |
23860348 | 5542 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 5543 | |
1a966eab AC |
5544 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
5545 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 5546 | &setlist); |
1a966eab AC |
5547 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
5548 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
5549 | &showlist); |
5550 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
5551 | set_memory_write_packet_size, _("\ |
5552 | Set the maximum number of bytes per memory-write packet.\n\ | |
5553 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5554 | default packet size. The actual limit is further reduced\n\ | |
5555 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5556 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5557 | &remote_set_cmdlist); |
5558 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
5559 | set_memory_read_packet_size, _("\ |
5560 | Set the maximum number of bytes per memory-read packet.\n\ | |
5561 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5562 | default packet size. The actual limit is further reduced\n\ | |
5563 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5564 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5565 | &remote_set_cmdlist); |
5566 | add_cmd ("memory-write-packet-size", no_class, | |
5567 | show_memory_write_packet_size, | |
1a966eab | 5568 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
5569 | &remote_show_cmdlist); |
5570 | add_cmd ("memory-read-packet-size", no_class, | |
5571 | show_memory_read_packet_size, | |
1a966eab | 5572 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 5573 | &remote_show_cmdlist); |
c906108c | 5574 | |
b3f42336 | 5575 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
5576 | &remote_hw_watchpoint_limit, _("\ |
5577 | Set the maximum number of target hardware watchpoints."), _("\ | |
5578 | Show the maximum number of target hardware watchpoints."), _("\ | |
5579 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5580 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
5581 | &remote_set_cmdlist, &remote_show_cmdlist); |
5582 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
5583 | &remote_hw_breakpoint_limit, _("\ |
5584 | Set the maximum number of target hardware breakpoints."), _("\ | |
5585 | Show the maximum number of target hardware breakpoints."), _("\ | |
5586 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5587 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 5588 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 5589 | |
4d28ad1e AC |
5590 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
5591 | &remote_address_size, _("\ | |
5592 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
5593 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
5594 | NULL, | |
5595 | NULL, /* FIXME: i18n: */ | |
5596 | &setlist, &showlist); | |
c906108c | 5597 | |
444abaca | 5598 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
96baa820 | 5599 | "X", "binary-download", |
444abaca DJ |
5600 | set_remote_protocol_packet_cmd, |
5601 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5602 | &remote_set_cmdlist, &remote_show_cmdlist, |
5603 | 1); | |
0f71a2f6 | 5604 | |
444abaca | 5605 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
506fb367 | 5606 | "vCont", "verbose-resume", |
444abaca DJ |
5607 | set_remote_protocol_packet_cmd, |
5608 | show_remote_protocol_packet_cmd, | |
506fb367 DJ |
5609 | &remote_set_cmdlist, &remote_show_cmdlist, |
5610 | 0); | |
5611 | ||
444abaca | 5612 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
dc8acb97 | 5613 | "qSymbol", "symbol-lookup", |
444abaca DJ |
5614 | set_remote_protocol_packet_cmd, |
5615 | show_remote_protocol_packet_cmd, | |
dc8acb97 MS |
5616 | &remote_set_cmdlist, &remote_show_cmdlist, |
5617 | 0); | |
5618 | ||
444abaca | 5619 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
d471ea57 | 5620 | "P", "set-register", |
444abaca DJ |
5621 | set_remote_protocol_packet_cmd, |
5622 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5623 | &remote_set_cmdlist, &remote_show_cmdlist, |
5624 | 1); | |
5625 | ||
444abaca | 5626 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
b96ec7ac | 5627 | "p", "fetch-register", |
444abaca DJ |
5628 | set_remote_protocol_packet_cmd, |
5629 | show_remote_protocol_packet_cmd, | |
b96ec7ac AC |
5630 | &remote_set_cmdlist, &remote_show_cmdlist, |
5631 | 1); | |
5632 | ||
444abaca | 5633 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
d471ea57 | 5634 | "Z0", "software-breakpoint", |
444abaca DJ |
5635 | set_remote_protocol_packet_cmd, |
5636 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5637 | &remote_set_cmdlist, &remote_show_cmdlist, |
5638 | 0); | |
5639 | ||
444abaca | 5640 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
d471ea57 | 5641 | "Z1", "hardware-breakpoint", |
444abaca DJ |
5642 | set_remote_protocol_packet_cmd, |
5643 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5644 | &remote_set_cmdlist, &remote_show_cmdlist, |
5645 | 0); | |
5646 | ||
444abaca | 5647 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
d471ea57 | 5648 | "Z2", "write-watchpoint", |
444abaca DJ |
5649 | set_remote_protocol_packet_cmd, |
5650 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5651 | &remote_set_cmdlist, &remote_show_cmdlist, |
5652 | 0); | |
5653 | ||
444abaca | 5654 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
d471ea57 | 5655 | "Z3", "read-watchpoint", |
444abaca DJ |
5656 | set_remote_protocol_packet_cmd, |
5657 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5658 | &remote_set_cmdlist, &remote_show_cmdlist, |
5659 | 0); | |
5660 | ||
444abaca | 5661 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
d471ea57 | 5662 | "Z4", "access-watchpoint", |
444abaca DJ |
5663 | set_remote_protocol_packet_cmd, |
5664 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5665 | &remote_set_cmdlist, &remote_show_cmdlist, |
5666 | 0); | |
5667 | ||
444abaca | 5668 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qPart_auxv], |
802188a7 | 5669 | "qPart_auxv", "read-aux-vector", |
444abaca DJ |
5670 | set_remote_protocol_packet_cmd, |
5671 | show_remote_protocol_packet_cmd, | |
802188a7 RM |
5672 | &remote_set_cmdlist, &remote_show_cmdlist, |
5673 | 0); | |
5674 | ||
444abaca | 5675 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 5676 | "qGetTLSAddr", "get-thread-local-storage-address", |
444abaca DJ |
5677 | set_remote_protocol_packet_cmd, |
5678 | show_remote_protocol_packet_cmd, | |
38691318 KB |
5679 | &remote_set_cmdlist, &remote_show_cmdlist, |
5680 | 0); | |
5681 | ||
37a105a1 DJ |
5682 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
5683 | Z sub-packet has its own set and show commands, but users may | |
5684 | have sets to this variable in their .gdbinit files (or in their | |
5685 | documentation). */ | |
e9e68a56 | 5686 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
5687 | &remote_Z_packet_detect, _("\ |
5688 | Set use of remote protocol `Z' packets"), _("\ | |
5689 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 5690 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 5691 | packets."), |
e9e68a56 | 5692 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 5693 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 5694 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
5695 | |
5696 | /* Eventually initialize fileio. See fileio.c */ | |
5697 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5698 | } |