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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 | ||
fd79ecee DJ |
63 | #include "memory-map.h" |
64 | ||
6765f3e5 DJ |
65 | /* The size to align memory write packets, when practical. The protocol |
66 | does not guarantee any alignment, and gdb will generate short | |
67 | writes and unaligned writes, but even as a best-effort attempt this | |
68 | can improve bulk transfers. For instance, if a write is misaligned | |
69 | relative to the target's data bus, the stub may need to make an extra | |
70 | round trip fetching data from the target. This doesn't make a | |
71 | huge difference, but it's easy to do, so we try to be helpful. | |
72 | ||
73 | The alignment chosen is arbitrary; usually data bus width is | |
74 | important here, not the possibly larger cache line size. */ | |
75 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
76 | ||
23860348 | 77 | /* Prototypes for local functions. */ |
6426a772 JM |
78 | static void cleanup_sigint_signal_handler (void *dummy); |
79 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 80 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 81 | |
a14ed312 KB |
82 | static void handle_remote_sigint (int); |
83 | static void handle_remote_sigint_twice (int); | |
84 | static void async_remote_interrupt (gdb_client_data); | |
85 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 86 | |
a14ed312 | 87 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 88 | |
a14ed312 | 89 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 90 | |
a14ed312 | 91 | static void remote_prepare_to_store (void); |
c906108c | 92 | |
a14ed312 | 93 | static void remote_fetch_registers (int regno); |
c906108c | 94 | |
39f77062 KB |
95 | static void remote_resume (ptid_t ptid, int step, |
96 | enum target_signal siggnal); | |
97 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 98 | enum target_signal siggnal); |
a14ed312 KB |
99 | static void remote_open (char *name, int from_tty); |
100 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 101 | |
a14ed312 KB |
102 | static void extended_remote_open (char *name, int from_tty); |
103 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 104 | |
92d1e331 DJ |
105 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
106 | int async_p); | |
c906108c | 107 | |
a14ed312 | 108 | static void remote_close (int quitting); |
c906108c | 109 | |
a14ed312 | 110 | static void remote_store_registers (int regno); |
c906108c | 111 | |
a14ed312 KB |
112 | static void remote_mourn (void); |
113 | static void remote_async_mourn (void); | |
c906108c | 114 | |
a14ed312 | 115 | static void extended_remote_restart (void); |
c906108c | 116 | |
a14ed312 | 117 | static void extended_remote_mourn (void); |
c906108c | 118 | |
a14ed312 | 119 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 120 | |
6d820c5c | 121 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 122 | |
a14ed312 | 123 | static int readchar (int timeout); |
c906108c | 124 | |
39f77062 KB |
125 | static ptid_t remote_wait (ptid_t ptid, |
126 | struct target_waitstatus *status); | |
127 | static ptid_t remote_async_wait (ptid_t ptid, | |
128 | struct target_waitstatus *status); | |
c906108c | 129 | |
a14ed312 KB |
130 | static void remote_kill (void); |
131 | static void remote_async_kill (void); | |
c906108c | 132 | |
a14ed312 | 133 | static int tohex (int nib); |
c906108c | 134 | |
a14ed312 | 135 | static void remote_detach (char *args, int from_tty); |
c906108c | 136 | |
a14ed312 | 137 | static void remote_interrupt (int signo); |
c906108c | 138 | |
a14ed312 | 139 | static void remote_interrupt_twice (int signo); |
7a292a7a | 140 | |
a14ed312 | 141 | static void interrupt_query (void); |
c906108c | 142 | |
a14ed312 | 143 | static void set_thread (int, int); |
c906108c | 144 | |
39f77062 | 145 | static int remote_thread_alive (ptid_t); |
c906108c | 146 | |
a14ed312 | 147 | static void get_offsets (void); |
c906108c | 148 | |
6d820c5c DJ |
149 | static void skip_frame (void); |
150 | ||
151 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 152 | |
a14ed312 | 153 | static int hexnumlen (ULONGEST num); |
c906108c | 154 | |
a14ed312 | 155 | static void init_remote_ops (void); |
c906108c | 156 | |
a14ed312 | 157 | static void init_extended_remote_ops (void); |
c906108c | 158 | |
a14ed312 | 159 | static void remote_stop (void); |
c906108c | 160 | |
a14ed312 | 161 | static int ishex (int ch, int *val); |
c906108c | 162 | |
a14ed312 | 163 | static int stubhex (int ch); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumstr (char *, ULONGEST); |
c906108c | 166 | |
a14ed312 | 167 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 168 | |
a14ed312 | 169 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 170 | |
a14ed312 | 171 | static void print_packet (char *); |
c906108c | 172 | |
a14ed312 | 173 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 174 | |
a14ed312 | 175 | static void compare_sections_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static void packet_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 180 | |
39f77062 | 181 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 182 | |
a14ed312 | 183 | static void remote_find_new_threads (void); |
c906108c | 184 | |
a14ed312 | 185 | static void record_currthread (int currthread); |
c906108c | 186 | |
30559e10 | 187 | static int fromhex (int a); |
c906108c | 188 | |
cfd77fa1 | 189 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 190 | |
cfd77fa1 | 191 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 192 | |
a14ed312 | 193 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 194 | |
a14ed312 | 195 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 196 | |
5a2468f5 | 197 | struct packet_config; |
5a2468f5 | 198 | |
a14ed312 | 199 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 200 | |
d471ea57 | 201 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 202 | |
bb572ddd DJ |
203 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
204 | struct cmd_list_element *c); | |
205 | ||
206 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
207 | int from_tty, | |
208 | struct cmd_list_element *c, | |
209 | const char *value); | |
210 | ||
a14ed312 | 211 | void _initialize_remote (void); |
c906108c | 212 | |
bb572ddd DJ |
213 | /* For "set remote" and "show remote". */ |
214 | ||
215 | static struct cmd_list_element *remote_set_cmdlist; | |
216 | static struct cmd_list_element *remote_show_cmdlist; | |
217 | ||
ea9c271d DJ |
218 | /* Description of the remote protocol state for the currently |
219 | connected target. This is per-target state, and independent of the | |
220 | selected architecture. */ | |
221 | ||
222 | struct remote_state | |
223 | { | |
224 | /* A buffer to use for incoming packets, and its current size. The | |
225 | buffer is grown dynamically for larger incoming packets. | |
226 | Outgoing packets may also be constructed in this buffer. | |
227 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
228 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
229 | packets. */ | |
230 | char *buf; | |
231 | long buf_size; | |
be2a5f71 DJ |
232 | |
233 | /* If we negotiated packet size explicitly (and thus can bypass | |
234 | heuristics for the largest packet size that will not overflow | |
235 | a buffer in the stub), this will be set to that packet size. | |
236 | Otherwise zero, meaning to use the guessed size. */ | |
237 | long explicit_packet_size; | |
ea9c271d DJ |
238 | }; |
239 | ||
240 | /* This data could be associated with a target, but we do not always | |
241 | have access to the current target when we need it, so for now it is | |
242 | static. This will be fine for as long as only one target is in use | |
243 | at a time. */ | |
244 | static struct remote_state remote_state; | |
245 | ||
246 | static struct remote_state * | |
247 | get_remote_state (void) | |
248 | { | |
249 | return &remote_state; | |
250 | } | |
251 | ||
252 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 253 | |
ad10f812 AC |
254 | struct packet_reg |
255 | { | |
256 | long offset; /* Offset into G packet. */ | |
257 | long regnum; /* GDB's internal register number. */ | |
258 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 259 | int in_g_packet; /* Always part of G packet. */ |
2bc416ba | 260 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
23860348 | 261 | at present. */ |
ad10f812 AC |
262 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
263 | }; | |
264 | ||
ea9c271d | 265 | struct remote_arch_state |
d01949b6 | 266 | { |
ad10f812 AC |
267 | /* Description of the remote protocol registers. */ |
268 | long sizeof_g_packet; | |
b323314b AC |
269 | |
270 | /* Description of the remote protocol registers indexed by REGNUM | |
271 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
272 | struct packet_reg *regs; | |
ad10f812 | 273 | |
d01949b6 AC |
274 | /* This is the size (in chars) of the first response to the ``g'' |
275 | packet. It is used as a heuristic when determining the maximum | |
276 | size of memory-read and memory-write packets. A target will | |
277 | typically only reserve a buffer large enough to hold the ``g'' | |
278 | packet. The size does not include packet overhead (headers and | |
23860348 | 279 | trailers). */ |
d01949b6 AC |
280 | long actual_register_packet_size; |
281 | ||
282 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 283 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
284 | long remote_packet_size; |
285 | }; | |
286 | ||
3c3bea1c | 287 | |
d01949b6 AC |
288 | /* Handle for retreving the remote protocol data from gdbarch. */ |
289 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
290 | ||
ea9c271d DJ |
291 | static struct remote_arch_state * |
292 | get_remote_arch_state (void) | |
d01949b6 | 293 | { |
451fbdda | 294 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
295 | } |
296 | ||
297 | static void * | |
298 | init_remote_state (struct gdbarch *gdbarch) | |
299 | { | |
300 | int regnum; | |
ea9c271d DJ |
301 | struct remote_state *rs = get_remote_state (); |
302 | struct remote_arch_state *rsa; | |
303 | ||
304 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 305 | |
ea9c271d | 306 | rsa->sizeof_g_packet = 0; |
ad10f812 | 307 | |
b323314b | 308 | /* Assume a 1:1 regnum<->pnum table. */ |
ea9c271d DJ |
309 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
310 | struct packet_reg); | |
b323314b | 311 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 312 | { |
ea9c271d | 313 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
314 | r->pnum = regnum; |
315 | r->regnum = regnum; | |
62700349 | 316 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 317 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 318 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d | 319 | |
23860348 | 320 | /* Compute packet size by accumulating the size of all registers. */ |
46845f5e | 321 | if (regnum < NUM_REGS) |
ea9c271d | 322 | rsa->sizeof_g_packet += register_size (current_gdbarch, regnum); |
ad10f812 AC |
323 | } |
324 | ||
d01949b6 AC |
325 | /* Default maximum number of characters in a packet body. Many |
326 | remote stubs have a hardwired buffer size of 400 bytes | |
327 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
328 | as the maximum packet-size to ensure that the packet and an extra | |
329 | NUL character can always fit in the buffer. This stops GDB | |
330 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
331 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
332 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 333 | |
ea9c271d DJ |
334 | /* This one is filled in when a ``g'' packet is received. */ |
335 | rsa->actual_register_packet_size = 0; | |
336 | ||
337 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
338 | default, adjust the size accordingly. Remember that each byte is |
339 | encoded as two characters. 32 is the overhead for the packet | |
340 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 341 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 342 | little. */ |
ea9c271d DJ |
343 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
344 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 345 | |
ea9c271d DJ |
346 | /* Make sure that the packet buffer is plenty big enough for |
347 | this architecture. */ | |
348 | if (rs->buf_size < rsa->remote_packet_size) | |
349 | { | |
350 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 351 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 352 | } |
6d820c5c | 353 | |
ea9c271d DJ |
354 | return rsa; |
355 | } | |
356 | ||
357 | /* Return the current allowed size of a remote packet. This is | |
358 | inferred from the current architecture, and should be used to | |
359 | limit the length of outgoing packets. */ | |
360 | static long | |
361 | get_remote_packet_size (void) | |
362 | { | |
be2a5f71 | 363 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
364 | struct remote_arch_state *rsa = get_remote_arch_state (); |
365 | ||
be2a5f71 DJ |
366 | if (rs->explicit_packet_size) |
367 | return rs->explicit_packet_size; | |
368 | ||
ea9c271d | 369 | return rsa->remote_packet_size; |
d01949b6 AC |
370 | } |
371 | ||
ad10f812 | 372 | static struct packet_reg * |
ea9c271d | 373 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 374 | { |
b323314b AC |
375 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
376 | return NULL; | |
377 | else | |
ad10f812 | 378 | { |
ea9c271d | 379 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
380 | gdb_assert (r->regnum == regnum); |
381 | return r; | |
ad10f812 | 382 | } |
ad10f812 AC |
383 | } |
384 | ||
385 | static struct packet_reg * | |
ea9c271d | 386 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 387 | { |
b323314b AC |
388 | int i; |
389 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 390 | { |
ea9c271d | 391 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
392 | if (r->pnum == pnum) |
393 | return r; | |
ad10f812 AC |
394 | } |
395 | return NULL; | |
d01949b6 AC |
396 | } |
397 | ||
3c3bea1c GS |
398 | /* FIXME: graces/2002-08-08: These variables should eventually be |
399 | bound to an instance of the target object (as in gdbarch-tdep()), | |
400 | when such a thing exists. */ | |
401 | ||
402 | /* This is set to the data address of the access causing the target | |
403 | to stop for a watchpoint. */ | |
404 | static CORE_ADDR remote_watch_data_address; | |
405 | ||
94e08568 | 406 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
407 | static int remote_stopped_by_watchpoint_p; |
408 | ||
c906108c SS |
409 | static struct target_ops remote_ops; |
410 | ||
411 | static struct target_ops extended_remote_ops; | |
412 | ||
43ff13b4 | 413 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 414 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
415 | static struct target_ops remote_async_ops; |
416 | ||
417 | static struct target_ops extended_async_remote_ops; | |
418 | ||
6426a772 JM |
419 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
420 | ``forever'' still use the normal timeout mechanism. This is | |
421 | currently used by the ASYNC code to guarentee that target reads | |
422 | during the initial connect always time-out. Once getpkt has been | |
423 | modified to return a timeout indication and, in turn | |
424 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 425 | this can go away. */ |
6426a772 JM |
426 | static int wait_forever_enabled_p = 1; |
427 | ||
428 | ||
c906108c SS |
429 | /* This variable chooses whether to send a ^C or a break when the user |
430 | requests program interruption. Although ^C is usually what remote | |
431 | systems expect, and that is the default here, sometimes a break is | |
432 | preferable instead. */ | |
433 | ||
434 | static int remote_break; | |
435 | ||
c906108c SS |
436 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
437 | remote_open knows that we don't have a file open when the program | |
438 | starts. */ | |
819cc324 | 439 | static struct serial *remote_desc = NULL; |
c906108c | 440 | |
c906108c SS |
441 | /* This variable sets the number of bits in an address that are to be |
442 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
443 | leading zeros, the entire address would be sent. This variable | |
444 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
445 | initial implementation of remote.c restricted the address sent in | |
446 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
447 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
448 | address was never sent. Since fixing this bug may cause a break in | |
449 | some remote targets this variable is principly provided to | |
23860348 | 450 | facilitate backward compatibility. */ |
c906108c SS |
451 | |
452 | static int remote_address_size; | |
453 | ||
6426a772 JM |
454 | /* Tempoary to track who currently owns the terminal. See |
455 | target_async_terminal_* for more details. */ | |
456 | ||
457 | static int remote_async_terminal_ours_p; | |
458 | ||
11cf8741 | 459 | \f |
11cf8741 | 460 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
461 | memory read/write packet. MIN (rsa->remote_packet_size, |
462 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 463 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
464 | (speed up transfers). The variables ``preferred_*'' (the user |
465 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 466 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
467 | |
468 | struct memory_packet_config | |
469 | { | |
470 | char *name; | |
471 | long size; | |
472 | int fixed_p; | |
473 | }; | |
474 | ||
475 | /* Compute the current size of a read/write packet. Since this makes | |
476 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
477 | ||
478 | static long | |
479 | get_memory_packet_size (struct memory_packet_config *config) | |
480 | { | |
d01949b6 | 481 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
482 | struct remote_arch_state *rsa = get_remote_arch_state (); |
483 | ||
11cf8741 JM |
484 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
485 | law?) that some hosts don't cope very well with large alloca() | |
486 | calls. Eventually the alloca() code will be replaced by calls to | |
487 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 488 | be lifted or removed. */ |
11cf8741 JM |
489 | #ifndef MAX_REMOTE_PACKET_SIZE |
490 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
491 | #endif | |
3de11b2e | 492 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 493 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 494 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
495 | #endif |
496 | long what_they_get; | |
497 | if (config->fixed_p) | |
498 | { | |
499 | if (config->size <= 0) | |
500 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
501 | else | |
502 | what_they_get = config->size; | |
503 | } | |
504 | else | |
505 | { | |
ea9c271d | 506 | what_they_get = get_remote_packet_size (); |
23860348 | 507 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
508 | if (config->size > 0 |
509 | && what_they_get > config->size) | |
510 | what_they_get = config->size; | |
be2a5f71 DJ |
511 | |
512 | /* Limit it to the size of the targets ``g'' response unless we have | |
513 | permission from the stub to use a larger packet size. */ | |
514 | if (rs->explicit_packet_size == 0 | |
515 | && rsa->actual_register_packet_size > 0 | |
516 | && what_they_get > rsa->actual_register_packet_size) | |
517 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
518 | } |
519 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
520 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
521 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
522 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
523 | |
524 | /* Make sure there is room in the global buffer for this packet | |
525 | (including its trailing NUL byte). */ | |
526 | if (rs->buf_size < what_they_get + 1) | |
527 | { | |
528 | rs->buf_size = 2 * what_they_get; | |
529 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
530 | } | |
531 | ||
11cf8741 JM |
532 | return what_they_get; |
533 | } | |
534 | ||
535 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 536 | something really big then do a sanity check. */ |
11cf8741 JM |
537 | |
538 | static void | |
539 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
540 | { | |
541 | int fixed_p = config->fixed_p; | |
542 | long size = config->size; | |
543 | if (args == NULL) | |
8a3fe4f8 | 544 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
545 | else if (strcmp (args, "hard") == 0 |
546 | || strcmp (args, "fixed") == 0) | |
547 | fixed_p = 1; | |
548 | else if (strcmp (args, "soft") == 0 | |
549 | || strcmp (args, "limit") == 0) | |
550 | fixed_p = 0; | |
551 | else | |
552 | { | |
553 | char *end; | |
554 | size = strtoul (args, &end, 0); | |
555 | if (args == end) | |
8a3fe4f8 | 556 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
557 | #if 0 |
558 | /* Instead of explicitly capping the size of a packet to | |
559 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
560 | instead allowed to set the size to something arbitrarily | |
23860348 | 561 | large. */ |
11cf8741 | 562 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 563 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
564 | #endif |
565 | } | |
23860348 | 566 | /* Extra checks? */ |
11cf8741 JM |
567 | if (fixed_p && !config->fixed_p) |
568 | { | |
e2e0b3e5 AC |
569 | if (! query (_("The target may not be able to correctly handle a %s\n" |
570 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 571 | config->name, size)) |
8a3fe4f8 | 572 | error (_("Packet size not changed.")); |
11cf8741 | 573 | } |
23860348 | 574 | /* Update the config. */ |
11cf8741 JM |
575 | config->fixed_p = fixed_p; |
576 | config->size = size; | |
577 | } | |
578 | ||
579 | static void | |
580 | show_memory_packet_size (struct memory_packet_config *config) | |
581 | { | |
a3f17187 | 582 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 583 | if (config->fixed_p) |
a3f17187 | 584 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
585 | get_memory_packet_size (config)); |
586 | else | |
a3f17187 | 587 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
588 | get_memory_packet_size (config)); |
589 | } | |
590 | ||
591 | static struct memory_packet_config memory_write_packet_config = | |
592 | { | |
593 | "memory-write-packet-size", | |
594 | }; | |
595 | ||
596 | static void | |
597 | set_memory_write_packet_size (char *args, int from_tty) | |
598 | { | |
599 | set_memory_packet_size (args, &memory_write_packet_config); | |
600 | } | |
601 | ||
602 | static void | |
603 | show_memory_write_packet_size (char *args, int from_tty) | |
604 | { | |
605 | show_memory_packet_size (&memory_write_packet_config); | |
606 | } | |
607 | ||
608 | static long | |
609 | get_memory_write_packet_size (void) | |
610 | { | |
611 | return get_memory_packet_size (&memory_write_packet_config); | |
612 | } | |
613 | ||
614 | static struct memory_packet_config memory_read_packet_config = | |
615 | { | |
616 | "memory-read-packet-size", | |
617 | }; | |
618 | ||
619 | static void | |
620 | set_memory_read_packet_size (char *args, int from_tty) | |
621 | { | |
622 | set_memory_packet_size (args, &memory_read_packet_config); | |
623 | } | |
624 | ||
625 | static void | |
626 | show_memory_read_packet_size (char *args, int from_tty) | |
627 | { | |
628 | show_memory_packet_size (&memory_read_packet_config); | |
629 | } | |
630 | ||
631 | static long | |
632 | get_memory_read_packet_size (void) | |
633 | { | |
634 | long size = get_memory_packet_size (&memory_read_packet_config); | |
635 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
636 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
637 | increased beyond this. */ |
638 | if (size > get_remote_packet_size ()) | |
639 | size = get_remote_packet_size (); | |
11cf8741 JM |
640 | return size; |
641 | } | |
642 | ||
11cf8741 | 643 | \f |
5a2468f5 JM |
644 | /* Generic configuration support for packets the stub optionally |
645 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 646 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
647 | |
648 | enum packet_support | |
649 | { | |
650 | PACKET_SUPPORT_UNKNOWN = 0, | |
651 | PACKET_ENABLE, | |
652 | PACKET_DISABLE | |
653 | }; | |
654 | ||
5a2468f5 JM |
655 | struct packet_config |
656 | { | |
bb572ddd DJ |
657 | const char *name; |
658 | const char *title; | |
7f19b9a2 | 659 | enum auto_boolean detect; |
5a2468f5 JM |
660 | enum packet_support support; |
661 | }; | |
662 | ||
d471ea57 | 663 | /* Analyze a packet's return value and update the packet config |
23860348 | 664 | accordingly. */ |
d471ea57 AC |
665 | |
666 | enum packet_result | |
667 | { | |
668 | PACKET_ERROR, | |
669 | PACKET_OK, | |
670 | PACKET_UNKNOWN | |
671 | }; | |
672 | ||
5a2468f5 | 673 | static void |
d471ea57 | 674 | update_packet_config (struct packet_config *config) |
5a2468f5 | 675 | { |
d471ea57 AC |
676 | switch (config->detect) |
677 | { | |
7f19b9a2 | 678 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
679 | config->support = PACKET_ENABLE; |
680 | break; | |
7f19b9a2 | 681 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
682 | config->support = PACKET_DISABLE; |
683 | break; | |
7f19b9a2 | 684 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
685 | config->support = PACKET_SUPPORT_UNKNOWN; |
686 | break; | |
687 | } | |
5a2468f5 JM |
688 | } |
689 | ||
690 | static void | |
fba45db2 | 691 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
692 | { |
693 | char *support = "internal-error"; | |
694 | switch (config->support) | |
695 | { | |
696 | case PACKET_ENABLE: | |
697 | support = "enabled"; | |
698 | break; | |
699 | case PACKET_DISABLE: | |
700 | support = "disabled"; | |
701 | break; | |
702 | case PACKET_SUPPORT_UNKNOWN: | |
703 | support = "unknown"; | |
704 | break; | |
705 | } | |
706 | switch (config->detect) | |
707 | { | |
7f19b9a2 | 708 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
709 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
710 | config->name, support); | |
5a2468f5 | 711 | break; |
7f19b9a2 AC |
712 | case AUTO_BOOLEAN_TRUE: |
713 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
714 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
715 | config->name, support); | |
8e248173 | 716 | break; |
5a2468f5 JM |
717 | } |
718 | } | |
719 | ||
720 | static void | |
bb572ddd DJ |
721 | add_packet_config_cmd (struct packet_config *config, const char *name, |
722 | const char *title, int legacy) | |
d471ea57 | 723 | { |
5a2468f5 JM |
724 | char *set_doc; |
725 | char *show_doc; | |
d471ea57 | 726 | char *cmd_name; |
3ed07be4 | 727 | |
5a2468f5 JM |
728 | config->name = name; |
729 | config->title = title; | |
7f19b9a2 | 730 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 731 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
732 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
733 | name, title); | |
734 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
735 | name, title); | |
d471ea57 | 736 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 737 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 738 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 739 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
740 | set_remote_protocol_packet_cmd, |
741 | show_remote_protocol_packet_cmd, | |
742 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 743 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
744 | if (legacy) |
745 | { | |
746 | char *legacy_name; | |
b435e160 | 747 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 748 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 749 | &remote_set_cmdlist); |
d471ea57 | 750 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 751 | &remote_show_cmdlist); |
d471ea57 | 752 | } |
5a2468f5 JM |
753 | } |
754 | ||
d471ea57 | 755 | static enum packet_result |
a76d924d | 756 | packet_check_result (const char *buf) |
5a2468f5 | 757 | { |
d471ea57 | 758 | if (buf[0] != '\0') |
5a2468f5 | 759 | { |
d471ea57 | 760 | /* The stub recognized the packet request. Check that the |
23860348 | 761 | operation succeeded. */ |
a76d924d DJ |
762 | if (buf[0] == 'E' |
763 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
764 | && buf[3] == '\0') | |
765 | /* "Enn" - definitly an error. */ | |
766 | return PACKET_ERROR; | |
767 | ||
768 | /* Always treat "E." as an error. This will be used for | |
769 | more verbose error messages, such as E.memtypes. */ | |
770 | if (buf[0] == 'E' && buf[1] == '.') | |
771 | return PACKET_ERROR; | |
772 | ||
773 | /* The packet may or may not be OK. Just assume it is. */ | |
774 | return PACKET_OK; | |
775 | } | |
776 | else | |
777 | /* The stub does not support the packet. */ | |
778 | return PACKET_UNKNOWN; | |
779 | } | |
780 | ||
781 | static enum packet_result | |
782 | packet_ok (const char *buf, struct packet_config *config) | |
783 | { | |
784 | enum packet_result result; | |
785 | ||
786 | result = packet_check_result (buf); | |
787 | switch (result) | |
788 | { | |
789 | case PACKET_OK: | |
790 | case PACKET_ERROR: | |
791 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
792 | switch (config->support) |
793 | { | |
794 | case PACKET_SUPPORT_UNKNOWN: | |
795 | if (remote_debug) | |
796 | fprintf_unfiltered (gdb_stdlog, | |
797 | "Packet %s (%s) is supported\n", | |
798 | config->name, config->title); | |
799 | config->support = PACKET_ENABLE; | |
800 | break; | |
801 | case PACKET_DISABLE: | |
8e65ff28 | 802 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 803 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
804 | break; |
805 | case PACKET_ENABLE: | |
806 | break; | |
807 | } | |
a76d924d DJ |
808 | break; |
809 | case PACKET_UNKNOWN: | |
23860348 | 810 | /* The stub does not support the packet. */ |
d471ea57 AC |
811 | switch (config->support) |
812 | { | |
813 | case PACKET_ENABLE: | |
7f19b9a2 | 814 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 815 | /* If the stub previously indicated that the packet was |
23860348 | 816 | supported then there is a protocol error.. */ |
8a3fe4f8 | 817 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
818 | config->name, config->title); |
819 | else | |
23860348 | 820 | /* The user set it wrong. */ |
8a3fe4f8 | 821 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
822 | config->name, config->title); |
823 | break; | |
824 | case PACKET_SUPPORT_UNKNOWN: | |
825 | if (remote_debug) | |
826 | fprintf_unfiltered (gdb_stdlog, | |
827 | "Packet %s (%s) is NOT supported\n", | |
828 | config->name, config->title); | |
829 | config->support = PACKET_DISABLE; | |
830 | break; | |
831 | case PACKET_DISABLE: | |
832 | break; | |
833 | } | |
a76d924d | 834 | break; |
5a2468f5 | 835 | } |
a76d924d DJ |
836 | |
837 | return result; | |
5a2468f5 JM |
838 | } |
839 | ||
444abaca DJ |
840 | enum { |
841 | PACKET_vCont = 0, | |
842 | PACKET_X, | |
843 | PACKET_qSymbol, | |
844 | PACKET_P, | |
845 | PACKET_p, | |
846 | PACKET_Z0, | |
847 | PACKET_Z1, | |
848 | PACKET_Z2, | |
849 | PACKET_Z3, | |
850 | PACKET_Z4, | |
0876f84a | 851 | PACKET_qXfer_auxv, |
fd79ecee | 852 | PACKET_qXfer_memory_map, |
444abaca | 853 | PACKET_qGetTLSAddr, |
be2a5f71 | 854 | PACKET_qSupported, |
444abaca DJ |
855 | PACKET_MAX |
856 | }; | |
506fb367 | 857 | |
444abaca | 858 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
859 | |
860 | static void | |
444abaca DJ |
861 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
862 | struct cmd_list_element *c) | |
dc8acb97 | 863 | { |
444abaca | 864 | struct packet_config *packet; |
dc8acb97 | 865 | |
444abaca DJ |
866 | for (packet = remote_protocol_packets; |
867 | packet < &remote_protocol_packets[PACKET_MAX]; | |
868 | packet++) | |
869 | { | |
870 | if (&packet->detect == c->var) | |
871 | { | |
872 | update_packet_config (packet); | |
873 | return; | |
874 | } | |
875 | } | |
876 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
877 | c->name); | |
dc8acb97 MS |
878 | } |
879 | ||
5a2468f5 | 880 | static void |
444abaca DJ |
881 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
882 | struct cmd_list_element *c, | |
883 | const char *value) | |
5a2468f5 | 884 | { |
444abaca | 885 | struct packet_config *packet; |
5a2468f5 | 886 | |
444abaca DJ |
887 | for (packet = remote_protocol_packets; |
888 | packet < &remote_protocol_packets[PACKET_MAX]; | |
889 | packet++) | |
890 | { | |
891 | if (&packet->detect == c->var) | |
892 | { | |
893 | show_packet_config_cmd (packet); | |
894 | return; | |
895 | } | |
896 | } | |
897 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
898 | c->name); | |
5a2468f5 JM |
899 | } |
900 | ||
d471ea57 AC |
901 | /* Should we try one of the 'Z' requests? */ |
902 | ||
903 | enum Z_packet_type | |
904 | { | |
905 | Z_PACKET_SOFTWARE_BP, | |
906 | Z_PACKET_HARDWARE_BP, | |
907 | Z_PACKET_WRITE_WP, | |
908 | Z_PACKET_READ_WP, | |
909 | Z_PACKET_ACCESS_WP, | |
910 | NR_Z_PACKET_TYPES | |
911 | }; | |
96baa820 | 912 | |
d471ea57 | 913 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 914 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 915 | |
7f19b9a2 | 916 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
917 | |
918 | static void | |
fba45db2 KB |
919 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
920 | struct cmd_list_element *c) | |
96baa820 | 921 | { |
d471ea57 AC |
922 | int i; |
923 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
924 | { | |
444abaca DJ |
925 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
926 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 927 | } |
96baa820 JM |
928 | } |
929 | ||
930 | static void | |
08546159 AC |
931 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
932 | struct cmd_list_element *c, | |
933 | const char *value) | |
96baa820 | 934 | { |
d471ea57 AC |
935 | int i; |
936 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
937 | { | |
444abaca | 938 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 939 | } |
96baa820 JM |
940 | } |
941 | ||
9d1f7ab2 MS |
942 | /* Should we try the 'ThreadInfo' query packet? |
943 | ||
944 | This variable (NOT available to the user: auto-detect only!) | |
945 | determines whether GDB will use the new, simpler "ThreadInfo" | |
946 | query or the older, more complex syntax for thread queries. | |
802188a7 | 947 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
948 | and set to false when the target fails to recognize it). */ |
949 | ||
950 | static int use_threadinfo_query; | |
951 | static int use_threadextra_query; | |
952 | ||
23860348 | 953 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
954 | static void *sigint_remote_twice_token; |
955 | static void *sigint_remote_token; | |
43ff13b4 | 956 | |
c906108c SS |
957 | /* These are pointers to hook functions that may be set in order to |
958 | modify resume/wait behavior for a particular architecture. */ | |
959 | ||
9a4105ab AC |
960 | void (*deprecated_target_resume_hook) (void); |
961 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
962 | \f |
963 | ||
c5aa993b | 964 | |
c906108c SS |
965 | /* These are the threads which we last sent to the remote system. |
966 | -1 for all or -2 for not sent yet. */ | |
967 | static int general_thread; | |
cce74817 | 968 | static int continue_thread; |
c906108c SS |
969 | |
970 | /* Call this function as a result of | |
971 | 1) A halt indication (T packet) containing a thread id | |
972 | 2) A direct query of currthread | |
973 | 3) Successful execution of set thread | |
974 | */ | |
975 | ||
976 | static void | |
fba45db2 | 977 | record_currthread (int currthread) |
c906108c | 978 | { |
c906108c | 979 | general_thread = currthread; |
cce74817 | 980 | |
c906108c SS |
981 | /* If this is a new thread, add it to GDB's thread list. |
982 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 983 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 984 | { |
39f77062 | 985 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 986 | ui_out_text (uiout, "[New "); |
39f77062 | 987 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 988 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 989 | } |
c906108c SS |
990 | } |
991 | ||
992 | #define MAGIC_NULL_PID 42000 | |
993 | ||
994 | static void | |
fba45db2 | 995 | set_thread (int th, int gen) |
c906108c | 996 | { |
d01949b6 | 997 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 998 | char *buf = rs->buf; |
cce74817 | 999 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1000 | |
1001 | if (state == th) | |
1002 | return; | |
1003 | ||
1004 | buf[0] = 'H'; | |
1005 | buf[1] = gen ? 'g' : 'c'; | |
1006 | if (th == MAGIC_NULL_PID) | |
1007 | { | |
1008 | buf[2] = '0'; | |
1009 | buf[3] = '\0'; | |
1010 | } | |
1011 | else if (th < 0) | |
ea9c271d | 1012 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 1013 | else |
ea9c271d | 1014 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 1015 | putpkt (buf); |
6d820c5c | 1016 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1017 | if (gen) |
c5aa993b | 1018 | general_thread = th; |
c906108c | 1019 | else |
cce74817 | 1020 | continue_thread = th; |
c906108c SS |
1021 | } |
1022 | \f | |
1023 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1024 | ||
1025 | static int | |
39f77062 | 1026 | remote_thread_alive (ptid_t ptid) |
c906108c | 1027 | { |
6d820c5c | 1028 | struct remote_state *rs = get_remote_state (); |
39f77062 | 1029 | int tid = PIDGET (ptid); |
c906108c | 1030 | |
cce74817 | 1031 | if (tid < 0) |
2e9f7625 | 1032 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1033 | else |
2e9f7625 DJ |
1034 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1035 | putpkt (rs->buf); | |
6d820c5c | 1036 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1037 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1038 | } |
1039 | ||
1040 | /* About these extended threadlist and threadinfo packets. They are | |
1041 | variable length packets but, the fields within them are often fixed | |
1042 | length. They are redundent enough to send over UDP as is the | |
1043 | remote protocol in general. There is a matching unit test module | |
1044 | in libstub. */ | |
1045 | ||
cce74817 JM |
1046 | #define OPAQUETHREADBYTES 8 |
1047 | ||
1048 | /* a 64 bit opaque identifier */ | |
1049 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1050 | ||
23860348 MS |
1051 | /* WARNING: This threadref data structure comes from the remote O.S., |
1052 | libstub protocol encoding, and remote.c. it is not particularly | |
1053 | changable. */ | |
cce74817 JM |
1054 | |
1055 | /* Right now, the internal structure is int. We want it to be bigger. | |
1056 | Plan to fix this. | |
c5aa993b | 1057 | */ |
cce74817 | 1058 | |
23860348 | 1059 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1060 | |
9d1f7ab2 | 1061 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1062 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1063 | |
1064 | struct gdb_ext_thread_info | |
c5aa993b | 1065 | { |
23860348 | 1066 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1067 | int active; /* Has state interesting to GDB? |
23860348 | 1068 | regs, stack. */ |
2bc416ba | 1069 | char display[256]; /* Brief state display, name, |
cedea757 | 1070 | blocked/suspended. */ |
23860348 | 1071 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1072 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1073 | whatever. */ |
c5aa993b | 1074 | }; |
cce74817 JM |
1075 | |
1076 | /* The volume of remote transfers can be limited by submitting | |
1077 | a mask containing bits specifying the desired information. | |
1078 | Use a union of these values as the 'selection' parameter to | |
1079 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1080 | */ |
cce74817 JM |
1081 | |
1082 | #define TAG_THREADID 1 | |
1083 | #define TAG_EXISTS 2 | |
1084 | #define TAG_DISPLAY 4 | |
1085 | #define TAG_THREADNAME 8 | |
c5aa993b | 1086 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1087 | |
23860348 | 1088 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1089 | |
b2dd6311 | 1090 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1091 | |
a14ed312 | 1092 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1093 | |
a14ed312 | 1094 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1095 | |
23860348 | 1096 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1097 | |
a14ed312 | 1098 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1099 | |
a14ed312 | 1100 | static char *pack_int (char *buf, int value); |
cce74817 | 1101 | |
a14ed312 | 1102 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1103 | |
a14ed312 | 1104 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1105 | |
23860348 | 1106 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1107 | |
23860348 | 1108 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1109 | |
23860348 | 1110 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1111 | |
23860348 | 1112 | static int threadref_to_int (threadref *ref); |
cce74817 | 1113 | |
23860348 | 1114 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1115 | |
23860348 | 1116 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1117 | |
2bc416ba | 1118 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1119 | threadref *id); |
cce74817 | 1120 | |
a14ed312 | 1121 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1122 | threadref *expectedref, |
a14ed312 KB |
1123 | struct gdb_ext_thread_info |
1124 | *info); | |
cce74817 JM |
1125 | |
1126 | ||
2bc416ba | 1127 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1128 | int fieldset, /*TAG mask */ |
a14ed312 | 1129 | struct gdb_ext_thread_info *info); |
cce74817 | 1130 | |
a14ed312 KB |
1131 | static char *pack_threadlist_request (char *pkt, int startflag, |
1132 | int threadcount, | |
23860348 | 1133 | threadref *nextthread); |
cce74817 | 1134 | |
a14ed312 KB |
1135 | static int parse_threadlist_response (char *pkt, |
1136 | int result_limit, | |
23860348 | 1137 | threadref *original_echo, |
2bc416ba | 1138 | threadref *resultlist, |
23860348 | 1139 | int *doneflag); |
cce74817 | 1140 | |
a14ed312 | 1141 | static int remote_get_threadlist (int startflag, |
23860348 | 1142 | threadref *nextthread, |
a14ed312 KB |
1143 | int result_limit, |
1144 | int *done, | |
2bc416ba | 1145 | int *result_count, |
23860348 | 1146 | threadref *threadlist); |
cce74817 | 1147 | |
23860348 | 1148 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1149 | |
a14ed312 KB |
1150 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1151 | void *context, int looplimit); | |
cce74817 | 1152 | |
23860348 | 1153 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1154 | |
23860348 | 1155 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1156 | |
1157 | static const char hexchars[] = "0123456789abcdef"; | |
1158 | ||
1159 | static int | |
fba45db2 | 1160 | ishex (int ch, int *val) |
c906108c SS |
1161 | { |
1162 | if ((ch >= 'a') && (ch <= 'f')) | |
1163 | { | |
1164 | *val = ch - 'a' + 10; | |
1165 | return 1; | |
1166 | } | |
1167 | if ((ch >= 'A') && (ch <= 'F')) | |
1168 | { | |
1169 | *val = ch - 'A' + 10; | |
1170 | return 1; | |
1171 | } | |
1172 | if ((ch >= '0') && (ch <= '9')) | |
1173 | { | |
1174 | *val = ch - '0'; | |
1175 | return 1; | |
1176 | } | |
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | static int | |
fba45db2 | 1181 | stubhex (int ch) |
c906108c SS |
1182 | { |
1183 | if (ch >= 'a' && ch <= 'f') | |
1184 | return ch - 'a' + 10; | |
1185 | if (ch >= '0' && ch <= '9') | |
1186 | return ch - '0'; | |
1187 | if (ch >= 'A' && ch <= 'F') | |
1188 | return ch - 'A' + 10; | |
1189 | return -1; | |
1190 | } | |
1191 | ||
1192 | static int | |
fba45db2 | 1193 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1194 | { |
1195 | int nibble; | |
1196 | int retval = 0; | |
1197 | ||
1198 | while (fieldlength) | |
1199 | { | |
1200 | nibble = stubhex (*buff++); | |
1201 | retval |= nibble; | |
1202 | fieldlength--; | |
1203 | if (fieldlength) | |
1204 | retval = retval << 4; | |
1205 | } | |
1206 | return retval; | |
1207 | } | |
1208 | ||
1209 | char * | |
fba45db2 | 1210 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1211 | ULONGEST *result) |
c906108c SS |
1212 | { |
1213 | int nibble; | |
d49c44d5 | 1214 | ULONGEST retval = 0; |
c906108c SS |
1215 | |
1216 | while (ishex (*buff, &nibble)) | |
1217 | { | |
1218 | buff++; | |
1219 | retval = retval << 4; | |
1220 | retval |= nibble & 0x0f; | |
1221 | } | |
1222 | *result = retval; | |
1223 | return buff; | |
1224 | } | |
1225 | ||
1226 | static char * | |
fba45db2 | 1227 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1228 | { |
1229 | ishex (*buf++, val); | |
1230 | return buf; | |
1231 | } | |
1232 | ||
1233 | static char * | |
fba45db2 | 1234 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1235 | { |
1236 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1237 | return buf; | |
1238 | } | |
1239 | ||
1240 | static char * | |
fba45db2 | 1241 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1242 | { |
1243 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1244 | *pkt++ = hexchars[(byte & 0xf)]; | |
1245 | return pkt; | |
1246 | } | |
1247 | ||
1248 | static char * | |
fba45db2 | 1249 | unpack_byte (char *buf, int *value) |
c906108c SS |
1250 | { |
1251 | *value = stub_unpack_int (buf, 2); | |
1252 | return buf + 2; | |
1253 | } | |
1254 | ||
1255 | static char * | |
fba45db2 | 1256 | pack_int (char *buf, int value) |
c906108c SS |
1257 | { |
1258 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1259 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1260 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1261 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1262 | return buf; | |
1263 | } | |
1264 | ||
1265 | static char * | |
fba45db2 | 1266 | unpack_int (char *buf, int *value) |
c906108c SS |
1267 | { |
1268 | *value = stub_unpack_int (buf, 8); | |
1269 | return buf + 8; | |
1270 | } | |
1271 | ||
23860348 | 1272 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1273 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1274 | |
1275 | static char * | |
fba45db2 | 1276 | pack_string (char *pkt, char *string) |
c906108c SS |
1277 | { |
1278 | char ch; | |
1279 | int len; | |
1280 | ||
1281 | len = strlen (string); | |
1282 | if (len > 200) | |
23860348 | 1283 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1284 | pkt = pack_hex_byte (pkt, len); |
1285 | while (len-- > 0) | |
1286 | { | |
1287 | ch = *string++; | |
1288 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1289 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1290 | *pkt++ = ch; |
1291 | } | |
1292 | return pkt; | |
1293 | } | |
1294 | #endif /* 0 (unused) */ | |
1295 | ||
1296 | static char * | |
fba45db2 | 1297 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1298 | { |
1299 | while (length--) | |
1300 | *dest++ = *src++; | |
1301 | *dest = '\0'; | |
1302 | return src; | |
1303 | } | |
1304 | ||
1305 | static char * | |
fba45db2 | 1306 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1307 | { |
1308 | char *limit; | |
1309 | unsigned char *altid; | |
1310 | ||
1311 | altid = (unsigned char *) id; | |
1312 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1313 | while (pkt < limit) | |
1314 | pkt = pack_hex_byte (pkt, *altid++); | |
1315 | return pkt; | |
1316 | } | |
1317 | ||
1318 | ||
1319 | static char * | |
fba45db2 | 1320 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1321 | { |
1322 | char *altref; | |
1323 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1324 | int x, y; | |
1325 | ||
1326 | altref = (char *) id; | |
1327 | ||
1328 | while (inbuf < limit) | |
1329 | { | |
1330 | x = stubhex (*inbuf++); | |
1331 | y = stubhex (*inbuf++); | |
1332 | *altref++ = (x << 4) | y; | |
1333 | } | |
1334 | return inbuf; | |
1335 | } | |
1336 | ||
1337 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1338 | ints. This is due to a mismatch of specifications. We would like | |
1339 | to use 64bit thread references internally. This is an adapter | |
1340 | function. */ | |
1341 | ||
1342 | void | |
fba45db2 | 1343 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1344 | { |
1345 | unsigned char *scan; | |
1346 | ||
1347 | scan = (unsigned char *) id; | |
1348 | { | |
1349 | int i = 4; | |
1350 | while (i--) | |
1351 | *scan++ = 0; | |
1352 | } | |
1353 | *scan++ = (value >> 24) & 0xff; | |
1354 | *scan++ = (value >> 16) & 0xff; | |
1355 | *scan++ = (value >> 8) & 0xff; | |
1356 | *scan++ = (value & 0xff); | |
1357 | } | |
1358 | ||
1359 | static int | |
fba45db2 | 1360 | threadref_to_int (threadref *ref) |
c906108c SS |
1361 | { |
1362 | int i, value = 0; | |
1363 | unsigned char *scan; | |
1364 | ||
cfd77fa1 | 1365 | scan = *ref; |
c906108c SS |
1366 | scan += 4; |
1367 | i = 4; | |
1368 | while (i-- > 0) | |
1369 | value = (value << 8) | ((*scan++) & 0xff); | |
1370 | return value; | |
1371 | } | |
1372 | ||
1373 | static void | |
fba45db2 | 1374 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1375 | { |
1376 | int i; | |
1377 | unsigned char *csrc, *cdest; | |
1378 | ||
1379 | csrc = (unsigned char *) src; | |
1380 | cdest = (unsigned char *) dest; | |
1381 | i = 8; | |
1382 | while (i--) | |
1383 | *cdest++ = *csrc++; | |
1384 | } | |
1385 | ||
1386 | static int | |
fba45db2 | 1387 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1388 | { |
23860348 | 1389 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1390 | #if 0 |
1391 | unsigned char *srcp, *destp; | |
1392 | int i, result; | |
1393 | srcp = (char *) src; | |
1394 | destp = (char *) dest; | |
1395 | ||
1396 | result = 1; | |
1397 | while (i-- > 0) | |
1398 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1399 | return result; | |
1400 | #endif | |
1401 | return 1; | |
1402 | } | |
1403 | ||
1404 | /* | |
c5aa993b JM |
1405 | threadid:1, # always request threadid |
1406 | context_exists:2, | |
1407 | display:4, | |
1408 | unique_name:8, | |
1409 | more_display:16 | |
1410 | */ | |
c906108c SS |
1411 | |
1412 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1413 | ||
1414 | static char * | |
fba45db2 | 1415 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1416 | { |
23860348 MS |
1417 | *pkt++ = 'q'; /* Info Query */ |
1418 | *pkt++ = 'P'; /* process or thread info */ | |
1419 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1420 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1421 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1422 | return pkt; |
1423 | } | |
1424 | ||
23860348 | 1425 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1426 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1427 | add more fields as time goes by. */ |
c906108c | 1428 | |
23860348 | 1429 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1430 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1431 | fetch registers and its stack? */ |
c5aa993b | 1432 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1433 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1434 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1435 | the process. */ |
c906108c SS |
1436 | |
1437 | static int | |
fba45db2 KB |
1438 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1439 | struct gdb_ext_thread_info *info) | |
c906108c | 1440 | { |
d01949b6 | 1441 | struct remote_state *rs = get_remote_state (); |
c906108c | 1442 | int mask, length; |
cfd77fa1 | 1443 | int tag; |
c906108c | 1444 | threadref ref; |
6d820c5c | 1445 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1446 | int retval = 1; |
1447 | ||
23860348 | 1448 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1449 | info->active = 0; |
1450 | info->display[0] = '\0'; | |
1451 | info->shortname[0] = '\0'; | |
1452 | info->more_display[0] = '\0'; | |
1453 | ||
23860348 MS |
1454 | /* Assume the characters indicating the packet type have been |
1455 | stripped. */ | |
c906108c SS |
1456 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1457 | pkt = unpack_threadid (pkt, &ref); | |
1458 | ||
1459 | if (mask == 0) | |
8a3fe4f8 | 1460 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1461 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1462 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1463 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1464 | return 0; |
1465 | } | |
1466 | copy_threadref (&info->threadid, &ref); | |
1467 | ||
23860348 | 1468 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1469 | |
23860348 MS |
1470 | /* Packets are terminated with nulls. */ |
1471 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1472 | { |
1473 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1474 | pkt = unpack_byte (pkt, &length); /* length */ |
1475 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1476 | { |
8a3fe4f8 | 1477 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1478 | retval = 0; |
1479 | break; | |
1480 | } | |
1481 | if (tag == TAG_THREADID) | |
1482 | { | |
1483 | if (length != 16) | |
1484 | { | |
8a3fe4f8 | 1485 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1486 | retval = 0; |
1487 | break; | |
1488 | } | |
1489 | pkt = unpack_threadid (pkt, &ref); | |
1490 | mask = mask & ~TAG_THREADID; | |
1491 | continue; | |
1492 | } | |
1493 | if (tag == TAG_EXISTS) | |
1494 | { | |
1495 | info->active = stub_unpack_int (pkt, length); | |
1496 | pkt += length; | |
1497 | mask = mask & ~(TAG_EXISTS); | |
1498 | if (length > 8) | |
1499 | { | |
8a3fe4f8 | 1500 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1501 | retval = 0; |
1502 | break; | |
1503 | } | |
1504 | continue; | |
1505 | } | |
1506 | if (tag == TAG_THREADNAME) | |
1507 | { | |
1508 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1509 | mask = mask & ~TAG_THREADNAME; | |
1510 | continue; | |
1511 | } | |
1512 | if (tag == TAG_DISPLAY) | |
1513 | { | |
1514 | pkt = unpack_string (pkt, &info->display[0], length); | |
1515 | mask = mask & ~TAG_DISPLAY; | |
1516 | continue; | |
1517 | } | |
1518 | if (tag == TAG_MOREDISPLAY) | |
1519 | { | |
1520 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1521 | mask = mask & ~TAG_MOREDISPLAY; | |
1522 | continue; | |
1523 | } | |
8a3fe4f8 | 1524 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1525 | break; /* Not a tag we know about. */ |
c906108c SS |
1526 | } |
1527 | return retval; | |
1528 | } | |
1529 | ||
1530 | static int | |
fba45db2 KB |
1531 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1532 | struct gdb_ext_thread_info *info) | |
c906108c | 1533 | { |
d01949b6 | 1534 | struct remote_state *rs = get_remote_state (); |
c906108c | 1535 | int result; |
c906108c | 1536 | |
2e9f7625 DJ |
1537 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1538 | putpkt (rs->buf); | |
6d820c5c | 1539 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1540 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1541 | threadid, info); |
c906108c SS |
1542 | return result; |
1543 | } | |
1544 | ||
c906108c SS |
1545 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1546 | ||
1547 | static char * | |
fba45db2 KB |
1548 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1549 | threadref *nextthread) | |
c906108c SS |
1550 | { |
1551 | *pkt++ = 'q'; /* info query packet */ | |
1552 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1553 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1554 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1555 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1556 | *pkt = '\0'; | |
1557 | return pkt; | |
1558 | } | |
1559 | ||
1560 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1561 | ||
1562 | static int | |
fba45db2 KB |
1563 | parse_threadlist_response (char *pkt, int result_limit, |
1564 | threadref *original_echo, threadref *resultlist, | |
1565 | int *doneflag) | |
c906108c | 1566 | { |
d01949b6 | 1567 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1568 | char *limit; |
1569 | int count, resultcount, done; | |
1570 | ||
1571 | resultcount = 0; | |
1572 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1573 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1574 | /* done parse past here */ |
c906108c SS |
1575 | pkt = unpack_byte (pkt, &count); /* count field */ |
1576 | pkt = unpack_nibble (pkt, &done); | |
1577 | /* The first threadid is the argument threadid. */ | |
1578 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1579 | while ((count-- > 0) && (pkt < limit)) | |
1580 | { | |
1581 | pkt = unpack_threadid (pkt, resultlist++); | |
1582 | if (resultcount++ >= result_limit) | |
1583 | break; | |
1584 | } | |
1585 | if (doneflag) | |
1586 | *doneflag = done; | |
1587 | return resultcount; | |
1588 | } | |
1589 | ||
1590 | static int | |
fba45db2 KB |
1591 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1592 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1593 | { |
d01949b6 | 1594 | struct remote_state *rs = get_remote_state (); |
c906108c | 1595 | static threadref echo_nextthread; |
c906108c SS |
1596 | int result = 1; |
1597 | ||
23860348 | 1598 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1599 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1600 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1601 | |
6d820c5c DJ |
1602 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1603 | putpkt (rs->buf); | |
1604 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1605 | |
1606 | *result_count = | |
6d820c5c | 1607 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1608 | threadlist, done); |
1609 | ||
1610 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1611 | { | |
23860348 MS |
1612 | /* FIXME: This is a good reason to drop the packet. */ |
1613 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1614 | /* Possabilities : |
1615 | retransmit immediatly - race conditions | |
1616 | retransmit after timeout - yes | |
1617 | exit | |
1618 | wait for packet, then exit | |
1619 | */ | |
8a3fe4f8 | 1620 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1621 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1622 | } |
1623 | if (*result_count <= 0) | |
1624 | { | |
1625 | if (*done != 1) | |
1626 | { | |
8a3fe4f8 | 1627 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1628 | result = 0; |
1629 | } | |
1630 | return result; /* break; */ | |
1631 | } | |
1632 | if (*result_count > result_limit) | |
1633 | { | |
1634 | *result_count = 0; | |
8a3fe4f8 | 1635 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1636 | return 0; |
1637 | } | |
1638 | return result; | |
1639 | } | |
1640 | ||
23860348 MS |
1641 | /* This is the interface between remote and threads, remotes upper |
1642 | interface. */ | |
c906108c SS |
1643 | |
1644 | /* remote_find_new_threads retrieves the thread list and for each | |
1645 | thread in the list, looks up the thread in GDB's internal list, | |
1646 | ading the thread if it does not already exist. This involves | |
1647 | getting partial thread lists from the remote target so, polling the | |
1648 | quit_flag is required. */ | |
1649 | ||
1650 | ||
23860348 | 1651 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1652 | |
1653 | #define MAXTHREADLISTRESULTS 32 | |
1654 | ||
1655 | static int | |
fba45db2 KB |
1656 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1657 | int looplimit) | |
c906108c SS |
1658 | { |
1659 | int done, i, result_count; | |
1660 | int startflag = 1; | |
1661 | int result = 1; | |
1662 | int loopcount = 0; | |
1663 | static threadref nextthread; | |
1664 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1665 | ||
1666 | done = 0; | |
1667 | while (!done) | |
1668 | { | |
1669 | if (loopcount++ > looplimit) | |
1670 | { | |
1671 | result = 0; | |
8a3fe4f8 | 1672 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1673 | break; |
1674 | } | |
1675 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1676 | &done, &result_count, resultthreadlist)) | |
1677 | { | |
1678 | result = 0; | |
1679 | break; | |
1680 | } | |
23860348 | 1681 | /* Clear for later iterations. */ |
c906108c SS |
1682 | startflag = 0; |
1683 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1684 | if (result_count >= 1) | |
1685 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1686 | i = 0; | |
1687 | while (result_count--) | |
1688 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1689 | break; | |
1690 | } | |
1691 | return result; | |
1692 | } | |
1693 | ||
1694 | static int | |
fba45db2 | 1695 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1696 | { |
39f77062 | 1697 | ptid_t ptid; |
c906108c | 1698 | |
39f77062 KB |
1699 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1700 | ||
1701 | if (!in_thread_list (ptid)) | |
1702 | add_thread (ptid); | |
c906108c SS |
1703 | return 1; /* continue iterator */ |
1704 | } | |
1705 | ||
1706 | #define CRAZY_MAX_THREADS 1000 | |
1707 | ||
39f77062 KB |
1708 | static ptid_t |
1709 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1710 | { |
d01949b6 | 1711 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1712 | |
1713 | putpkt ("qC"); | |
6d820c5c | 1714 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1715 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c273b20f JB |
1716 | /* Use strtoul here, so we'll correctly parse values whose highest |
1717 | bit is set. The protocol carries them as a simple series of | |
1718 | hex digits; in the absence of a sign, strtol will see such | |
1719 | values as positive numbers out of range for signed 'long', and | |
1720 | return LONG_MAX to indicate an overflow. */ | |
2e9f7625 | 1721 | return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16)); |
c906108c SS |
1722 | else |
1723 | return oldpid; | |
1724 | } | |
1725 | ||
802188a7 RM |
1726 | /* Find new threads for info threads command. |
1727 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1728 | */ |
cce74817 JM |
1729 | |
1730 | static void | |
fba45db2 | 1731 | remote_find_new_threads (void) |
c906108c | 1732 | { |
c5aa993b JM |
1733 | remote_threadlist_iterator (remote_newthread_step, 0, |
1734 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1735 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1736 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1737 | } |
1738 | ||
9d1f7ab2 MS |
1739 | /* |
1740 | * Find all threads for info threads command. | |
1741 | * Uses new thread protocol contributed by Cisco. | |
1742 | * Falls back and attempts to use the older method (above) | |
1743 | * if the target doesn't respond to the new method. | |
1744 | */ | |
1745 | ||
0f71a2f6 JM |
1746 | static void |
1747 | remote_threads_info (void) | |
1748 | { | |
d01949b6 | 1749 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1750 | char *bufp; |
0f71a2f6 JM |
1751 | int tid; |
1752 | ||
1753 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1754 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1755 | |
9d1f7ab2 MS |
1756 | if (use_threadinfo_query) |
1757 | { | |
1758 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1759 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1760 | bufp = rs->buf; |
9d1f7ab2 | 1761 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1762 | { |
9d1f7ab2 MS |
1763 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1764 | { | |
1765 | do | |
1766 | { | |
c273b20f JB |
1767 | /* Use strtoul here, so we'll correctly parse values |
1768 | whose highest bit is set. The protocol carries | |
1769 | them as a simple series of hex digits; in the | |
1770 | absence of a sign, strtol will see such values as | |
1771 | positive numbers out of range for signed 'long', | |
1772 | and return LONG_MAX to indicate an overflow. */ | |
1773 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1774 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1775 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1776 | } |
1777 | while (*bufp++ == ','); /* comma-separated list */ | |
1778 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1779 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1780 | bufp = rs->buf; |
9d1f7ab2 MS |
1781 | } |
1782 | return; /* done */ | |
1783 | } | |
1784 | } | |
1785 | ||
23860348 | 1786 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1787 | use_threadinfo_query = 0; |
1788 | remote_find_new_threads (); | |
1789 | return; | |
1790 | } | |
1791 | ||
802188a7 | 1792 | /* |
9d1f7ab2 MS |
1793 | * Collect a descriptive string about the given thread. |
1794 | * The target may say anything it wants to about the thread | |
1795 | * (typically info about its blocked / runnable state, name, etc.). | |
1796 | * This string will appear in the info threads display. | |
802188a7 | 1797 | * |
9d1f7ab2 MS |
1798 | * Optional: targets are not required to implement this function. |
1799 | */ | |
1800 | ||
1801 | static char * | |
1802 | remote_threads_extra_info (struct thread_info *tp) | |
1803 | { | |
d01949b6 | 1804 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1805 | int result; |
1806 | int set; | |
1807 | threadref id; | |
1808 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1809 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1810 | int n = 0; /* position in display_buf */ |
1811 | ||
1812 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1813 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1814 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1815 | |
1816 | if (use_threadextra_query) | |
1817 | { | |
2e9f7625 | 1818 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1819 | PIDGET (tp->ptid)); |
2e9f7625 | 1820 | putpkt (rs->buf); |
6d820c5c | 1821 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1822 | if (rs->buf[0] != 0) |
9d1f7ab2 | 1823 | { |
2e9f7625 DJ |
1824 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
1825 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 1826 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1827 | return display_buf; |
1828 | } | |
0f71a2f6 | 1829 | } |
9d1f7ab2 MS |
1830 | |
1831 | /* If the above query fails, fall back to the old method. */ | |
1832 | use_threadextra_query = 0; | |
1833 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1834 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1835 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1836 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1837 | if (threadinfo.active) | |
0f71a2f6 | 1838 | { |
9d1f7ab2 | 1839 | if (*threadinfo.shortname) |
2bc416ba | 1840 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 1841 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 1842 | if (*threadinfo.display) |
2bc416ba | 1843 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1844 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 1845 | if (*threadinfo.more_display) |
2bc416ba | 1846 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1847 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
1848 | |
1849 | if (n > 0) | |
c5aa993b | 1850 | { |
23860348 | 1851 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1852 | if (',' == display_buf[n-1]) |
1853 | display_buf[n-1] = ' '; | |
1854 | return display_buf; | |
c5aa993b | 1855 | } |
0f71a2f6 | 1856 | } |
9d1f7ab2 | 1857 | return NULL; |
0f71a2f6 | 1858 | } |
c906108c | 1859 | \f |
c5aa993b | 1860 | |
24b06219 | 1861 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1862 | |
1863 | static void | |
fba45db2 | 1864 | extended_remote_restart (void) |
c906108c | 1865 | { |
d01949b6 | 1866 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1867 | |
1868 | /* Send the restart command; for reasons I don't understand the | |
1869 | remote side really expects a number after the "R". */ | |
ea9c271d | 1870 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1871 | putpkt (rs->buf); |
c906108c | 1872 | |
ad9a8f3f | 1873 | remote_fileio_reset (); |
2bc416ba | 1874 | |
c906108c SS |
1875 | /* Now query for status so this looks just like we restarted |
1876 | gdbserver from scratch. */ | |
1877 | putpkt ("?"); | |
01d3a6ce | 1878 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1879 | } |
1880 | \f | |
1881 | /* Clean up connection to a remote debugger. */ | |
1882 | ||
c906108c | 1883 | static void |
fba45db2 | 1884 | remote_close (int quitting) |
c906108c SS |
1885 | { |
1886 | if (remote_desc) | |
2cd58942 | 1887 | serial_close (remote_desc); |
c906108c SS |
1888 | remote_desc = NULL; |
1889 | } | |
1890 | ||
23860348 | 1891 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1892 | |
1893 | static void | |
fba45db2 | 1894 | get_offsets (void) |
c906108c | 1895 | { |
d01949b6 | 1896 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 1897 | char *buf; |
085dd6e6 | 1898 | char *ptr; |
c906108c SS |
1899 | int lose; |
1900 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1901 | struct section_offsets *offs; | |
1902 | ||
1903 | putpkt ("qOffsets"); | |
6d820c5c | 1904 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1905 | buf = rs->buf; |
c906108c SS |
1906 | |
1907 | if (buf[0] == '\000') | |
1908 | return; /* Return silently. Stub doesn't support | |
23860348 | 1909 | this command. */ |
c906108c SS |
1910 | if (buf[0] == 'E') |
1911 | { | |
8a3fe4f8 | 1912 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1913 | return; |
1914 | } | |
1915 | ||
1916 | /* Pick up each field in turn. This used to be done with scanf, but | |
1917 | scanf will make trouble if CORE_ADDR size doesn't match | |
1918 | conversion directives correctly. The following code will work | |
1919 | with any size of CORE_ADDR. */ | |
1920 | text_addr = data_addr = bss_addr = 0; | |
1921 | ptr = buf; | |
1922 | lose = 0; | |
1923 | ||
1924 | if (strncmp (ptr, "Text=", 5) == 0) | |
1925 | { | |
1926 | ptr += 5; | |
1927 | /* Don't use strtol, could lose on big values. */ | |
1928 | while (*ptr && *ptr != ';') | |
1929 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1930 | } | |
1931 | else | |
1932 | lose = 1; | |
1933 | ||
1934 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1935 | { | |
1936 | ptr += 6; | |
1937 | while (*ptr && *ptr != ';') | |
1938 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1939 | } | |
1940 | else | |
1941 | lose = 1; | |
1942 | ||
1943 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1944 | { | |
1945 | ptr += 5; | |
1946 | while (*ptr && *ptr != ';') | |
1947 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1948 | } | |
1949 | else | |
1950 | lose = 1; | |
1951 | ||
1952 | if (lose) | |
8a3fe4f8 | 1953 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
1954 | |
1955 | if (symfile_objfile == NULL) | |
1956 | return; | |
1957 | ||
802188a7 | 1958 | offs = ((struct section_offsets *) |
a39a16c4 | 1959 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1960 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1961 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1962 | |
a4c8257b | 1963 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1964 | |
1965 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1966 | because that's what nlmconv does now. The real solution requires changes | |
1967 | to the stub and remote.c that I don't have time to do right now. */ | |
1968 | ||
a4c8257b EZ |
1969 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1970 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1971 | |
1972 | objfile_relocate (symfile_objfile, offs); | |
1973 | } | |
1974 | ||
1975 | /* Stub for catch_errors. */ | |
1976 | ||
0f71a2f6 | 1977 | static int |
36918e70 | 1978 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 1979 | { |
23860348 | 1980 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
1981 | /* NOTE: Return something >=0. A -ve value is reserved for |
1982 | catch_exceptions. */ | |
0f71a2f6 JM |
1983 | return 1; |
1984 | } | |
1985 | ||
9cbc821d | 1986 | static void |
36918e70 | 1987 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 1988 | { |
23860348 | 1989 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
1990 | |
1991 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 1992 | serial_write (remote_desc, "+", 1); |
c906108c SS |
1993 | |
1994 | /* Let the stub know that we want it to return the thread. */ | |
1995 | set_thread (-1, 0); | |
1996 | ||
39f77062 | 1997 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 1998 | |
23860348 | 1999 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2000 | |
23860348 | 2001 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2002 | immediate_quit--; |
c906108c | 2003 | |
9cbc821d | 2004 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
2005 | } |
2006 | ||
2007 | /* Open a connection to a remote debugger. | |
2008 | NAME is the filename used for communication. */ | |
2009 | ||
2010 | static void | |
fba45db2 | 2011 | remote_open (char *name, int from_tty) |
c906108c | 2012 | { |
92d1e331 | 2013 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2014 | } |
2015 | ||
23860348 | 2016 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2017 | static void |
fba45db2 | 2018 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2019 | { |
92d1e331 | 2020 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2021 | } |
2022 | ||
c906108c SS |
2023 | /* Open a connection to a remote debugger using the extended |
2024 | remote gdb protocol. NAME is the filename used for communication. */ | |
2025 | ||
2026 | static void | |
fba45db2 | 2027 | extended_remote_open (char *name, int from_tty) |
c906108c | 2028 | { |
92d1e331 DJ |
2029 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2030 | 0 /* async_p */); | |
c906108c SS |
2031 | } |
2032 | ||
23860348 | 2033 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2034 | static void |
fba45db2 | 2035 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2036 | { |
92d1e331 DJ |
2037 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2038 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2039 | } |
2040 | ||
c906108c SS |
2041 | /* Generic code for opening a connection to a remote target. */ |
2042 | ||
d471ea57 AC |
2043 | static void |
2044 | init_all_packet_configs (void) | |
2045 | { | |
2046 | int i; | |
444abaca DJ |
2047 | for (i = 0; i < PACKET_MAX; i++) |
2048 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2049 | } |
2050 | ||
23860348 | 2051 | /* Symbol look-up. */ |
dc8acb97 MS |
2052 | |
2053 | static void | |
2054 | remote_check_symbols (struct objfile *objfile) | |
2055 | { | |
d01949b6 | 2056 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2057 | char *msg, *reply, *tmp; |
2058 | struct minimal_symbol *sym; | |
2059 | int end; | |
2060 | ||
444abaca | 2061 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2062 | return; |
2063 | ||
6d820c5c DJ |
2064 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2065 | because we need both at the same time. */ | |
ea9c271d | 2066 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2067 | |
23860348 | 2068 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2069 | |
2070 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2071 | getpkt (&rs->buf, &rs->buf_size, 0); |
2072 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2073 | reply = rs->buf; |
dc8acb97 MS |
2074 | |
2075 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2076 | { | |
2077 | tmp = &reply[8]; | |
cfd77fa1 | 2078 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2079 | msg[end] = '\0'; |
2080 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2081 | if (sym == NULL) | |
ea9c271d | 2082 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2083 | else |
ea9c271d | 2084 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", |
ecbc58df WZ |
2085 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2086 | &reply[8]); | |
dc8acb97 | 2087 | putpkt (msg); |
6d820c5c | 2088 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2089 | reply = rs->buf; |
dc8acb97 MS |
2090 | } |
2091 | } | |
2092 | ||
9db8d71f DJ |
2093 | static struct serial * |
2094 | remote_serial_open (char *name) | |
2095 | { | |
2096 | static int udp_warning = 0; | |
2097 | ||
2098 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2099 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2100 | serial connection is reliable and not the serial connection promising | |
2101 | to be. */ | |
2102 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2103 | { | |
8a3fe4f8 AC |
2104 | warning (_("\ |
2105 | The remote protocol may be unreliable over UDP.\n\ | |
2106 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2107 | udp_warning = 1; |
2108 | } | |
2109 | ||
2110 | return serial_open (name); | |
2111 | } | |
2112 | ||
be2a5f71 DJ |
2113 | /* This type describes each known response to the qSupported |
2114 | packet. */ | |
2115 | struct protocol_feature | |
2116 | { | |
2117 | /* The name of this protocol feature. */ | |
2118 | const char *name; | |
2119 | ||
2120 | /* The default for this protocol feature. */ | |
2121 | enum packet_support default_support; | |
2122 | ||
2123 | /* The function to call when this feature is reported, or after | |
2124 | qSupported processing if the feature is not supported. | |
2125 | The first argument points to this structure. The second | |
2126 | argument indicates whether the packet requested support be | |
2127 | enabled, disabled, or probed (or the default, if this function | |
2128 | is being called at the end of processing and this feature was | |
2129 | not reported). The third argument may be NULL; if not NULL, it | |
2130 | is a NUL-terminated string taken from the packet following | |
2131 | this feature's name and an equals sign. */ | |
2132 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2133 | const char *); | |
2134 | ||
2135 | /* The corresponding packet for this feature. Only used if | |
2136 | FUNC is remote_supported_packet. */ | |
2137 | int packet; | |
2138 | }; | |
2139 | ||
be2a5f71 DJ |
2140 | static void |
2141 | remote_supported_packet (const struct protocol_feature *feature, | |
2142 | enum packet_support support, | |
2143 | const char *argument) | |
2144 | { | |
2145 | if (argument) | |
2146 | { | |
2147 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2148 | " \"%s\"."), feature->name); | |
2149 | return; | |
2150 | } | |
2151 | ||
2152 | if (remote_protocol_packets[feature->packet].support | |
2153 | == PACKET_SUPPORT_UNKNOWN) | |
2154 | remote_protocol_packets[feature->packet].support = support; | |
2155 | } | |
be2a5f71 DJ |
2156 | |
2157 | static void | |
2158 | remote_packet_size (const struct protocol_feature *feature, | |
2159 | enum packet_support support, const char *value) | |
2160 | { | |
2161 | struct remote_state *rs = get_remote_state (); | |
2162 | ||
2163 | int packet_size; | |
2164 | char *value_end; | |
2165 | ||
2166 | if (support != PACKET_ENABLE) | |
2167 | return; | |
2168 | ||
2169 | if (value == NULL || *value == '\0') | |
2170 | { | |
2171 | warning (_("Remote target reported \"%s\" without a size."), | |
2172 | feature->name); | |
2173 | return; | |
2174 | } | |
2175 | ||
2176 | errno = 0; | |
2177 | packet_size = strtol (value, &value_end, 16); | |
2178 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2179 | { | |
2180 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2181 | feature->name, value); | |
2182 | return; | |
2183 | } | |
2184 | ||
2185 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2186 | { | |
2187 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2188 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2189 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2190 | } | |
2191 | ||
2192 | /* Record the new maximum packet size. */ | |
2193 | rs->explicit_packet_size = packet_size; | |
2194 | } | |
2195 | ||
2196 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2197 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2198 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee DJ |
2199 | PACKET_qXfer_auxv }, |
2200 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, | |
2201 | PACKET_qXfer_memory_map } | |
be2a5f71 DJ |
2202 | }; |
2203 | ||
2204 | static void | |
2205 | remote_query_supported (void) | |
2206 | { | |
2207 | struct remote_state *rs = get_remote_state (); | |
2208 | char *next; | |
2209 | int i; | |
2210 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2211 | ||
2212 | /* The packet support flags are handled differently for this packet | |
2213 | than for most others. We treat an error, a disabled packet, and | |
2214 | an empty response identically: any features which must be reported | |
2215 | to be used will be automatically disabled. An empty buffer | |
2216 | accomplishes this, since that is also the representation for a list | |
2217 | containing no features. */ | |
2218 | ||
2219 | rs->buf[0] = 0; | |
2220 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2221 | { | |
2222 | putpkt ("qSupported"); | |
2223 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2224 | ||
2225 | /* If an error occured, warn, but do not return - just reset the | |
2226 | buffer to empty and go on to disable features. */ | |
2227 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2228 | == PACKET_ERROR) | |
2229 | { | |
2230 | warning (_("Remote failure reply: %s"), rs->buf); | |
2231 | rs->buf[0] = 0; | |
2232 | } | |
2233 | } | |
2234 | ||
2235 | memset (seen, 0, sizeof (seen)); | |
2236 | ||
2237 | next = rs->buf; | |
2238 | while (*next) | |
2239 | { | |
2240 | enum packet_support is_supported; | |
2241 | char *p, *end, *name_end, *value; | |
2242 | ||
2243 | /* First separate out this item from the rest of the packet. If | |
2244 | there's another item after this, we overwrite the separator | |
2245 | (terminated strings are much easier to work with). */ | |
2246 | p = next; | |
2247 | end = strchr (p, ';'); | |
2248 | if (end == NULL) | |
2249 | { | |
2250 | end = p + strlen (p); | |
2251 | next = end; | |
2252 | } | |
2253 | else | |
2254 | { | |
2255 | if (end == p) | |
2256 | { | |
2257 | warning (_("empty item in \"qSupported\" response")); | |
2258 | continue; | |
2259 | } | |
2260 | ||
2261 | *end = '\0'; | |
2262 | next = end + 1; | |
2263 | } | |
2264 | ||
2265 | name_end = strchr (p, '='); | |
2266 | if (name_end) | |
2267 | { | |
2268 | /* This is a name=value entry. */ | |
2269 | is_supported = PACKET_ENABLE; | |
2270 | value = name_end + 1; | |
2271 | *name_end = '\0'; | |
2272 | } | |
2273 | else | |
2274 | { | |
2275 | value = NULL; | |
2276 | switch (end[-1]) | |
2277 | { | |
2278 | case '+': | |
2279 | is_supported = PACKET_ENABLE; | |
2280 | break; | |
2281 | ||
2282 | case '-': | |
2283 | is_supported = PACKET_DISABLE; | |
2284 | break; | |
2285 | ||
2286 | case '?': | |
2287 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2288 | break; | |
2289 | ||
2290 | default: | |
2291 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2292 | continue; | |
2293 | } | |
2294 | end[-1] = '\0'; | |
2295 | } | |
2296 | ||
2297 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2298 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2299 | { | |
2300 | const struct protocol_feature *feature; | |
2301 | ||
2302 | seen[i] = 1; | |
2303 | feature = &remote_protocol_features[i]; | |
2304 | feature->func (feature, is_supported, value); | |
2305 | break; | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | /* If we increased the packet size, make sure to increase the global | |
2310 | buffer size also. We delay this until after parsing the entire | |
2311 | qSupported packet, because this is the same buffer we were | |
2312 | parsing. */ | |
2313 | if (rs->buf_size < rs->explicit_packet_size) | |
2314 | { | |
2315 | rs->buf_size = rs->explicit_packet_size; | |
2316 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2317 | } | |
2318 | ||
2319 | /* Handle the defaults for unmentioned features. */ | |
2320 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2321 | if (!seen[i]) | |
2322 | { | |
2323 | const struct protocol_feature *feature; | |
2324 | ||
2325 | feature = &remote_protocol_features[i]; | |
2326 | feature->func (feature, feature->default_support, NULL); | |
2327 | } | |
2328 | } | |
2329 | ||
2330 | ||
c906108c | 2331 | static void |
fba45db2 | 2332 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2333 | int extended_p, int async_p) |
c906108c | 2334 | { |
d01949b6 | 2335 | struct remote_state *rs = get_remote_state (); |
c906108c | 2336 | if (name == 0) |
8a3fe4f8 | 2337 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2338 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2339 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2340 | |
23860348 | 2341 | /* See FIXME above. */ |
92d1e331 DJ |
2342 | if (!async_p) |
2343 | wait_forever_enabled_p = 1; | |
6426a772 | 2344 | |
c906108c SS |
2345 | target_preopen (from_tty); |
2346 | ||
2347 | unpush_target (target); | |
2348 | ||
ad9a8f3f | 2349 | remote_fileio_reset (); |
1dd41f16 NS |
2350 | reopen_exec_file (); |
2351 | reread_symbols (); | |
2352 | ||
9db8d71f | 2353 | remote_desc = remote_serial_open (name); |
c906108c SS |
2354 | if (!remote_desc) |
2355 | perror_with_name (name); | |
2356 | ||
2357 | if (baud_rate != -1) | |
2358 | { | |
2cd58942 | 2359 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2360 | { |
9b74d5d3 KB |
2361 | /* The requested speed could not be set. Error out to |
2362 | top level after closing remote_desc. Take care to | |
2363 | set remote_desc to NULL to avoid closing remote_desc | |
2364 | more than once. */ | |
2cd58942 | 2365 | serial_close (remote_desc); |
9b74d5d3 | 2366 | remote_desc = NULL; |
c906108c SS |
2367 | perror_with_name (name); |
2368 | } | |
2369 | } | |
2370 | ||
2cd58942 | 2371 | serial_raw (remote_desc); |
c906108c SS |
2372 | |
2373 | /* If there is something sitting in the buffer we might take it as a | |
2374 | response to a command, which would be bad. */ | |
2cd58942 | 2375 | serial_flush_input (remote_desc); |
c906108c SS |
2376 | |
2377 | if (from_tty) | |
2378 | { | |
2379 | puts_filtered ("Remote debugging using "); | |
2380 | puts_filtered (name); | |
2381 | puts_filtered ("\n"); | |
2382 | } | |
23860348 | 2383 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2384 | |
be2a5f71 DJ |
2385 | /* Reset the target state; these things will be queried either by |
2386 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2387 | init_all_packet_configs (); |
be2a5f71 | 2388 | rs->explicit_packet_size = 0; |
802188a7 | 2389 | |
c5aa993b | 2390 | general_thread = -2; |
cce74817 | 2391 | continue_thread = -2; |
c906108c | 2392 | |
9d1f7ab2 MS |
2393 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2394 | use_threadinfo_query = 1; | |
2395 | use_threadextra_query = 1; | |
2396 | ||
be2a5f71 DJ |
2397 | /* The first packet we send to the target is the optional "supported |
2398 | packets" request. If the target can answer this, it will tell us | |
2399 | which later probes to skip. */ | |
2400 | remote_query_supported (); | |
2401 | ||
c906108c SS |
2402 | /* Without this, some commands which require an active target (such |
2403 | as kill) won't work. This variable serves (at least) double duty | |
2404 | as both the pid of the target process (if it has such), and as a | |
2405 | flag indicating that a target is active. These functions should | |
2406 | be split out into seperate variables, especially since GDB will | |
2407 | someday have a notion of debugging several processes. */ | |
2408 | ||
39f77062 | 2409 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2410 | |
2411 | if (async_p) | |
2412 | { | |
23860348 | 2413 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2414 | remote_async_terminal_ours_p = 1; |
2415 | ||
2416 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2417 | assumed that the target is already ready and able to respond to | |
2418 | requests. Unfortunately remote_start_remote() eventually calls | |
2419 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2420 | around this. Eventually a mechanism that allows | |
2421 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2422 | implemented. */ |
92d1e331 DJ |
2423 | wait_forever_enabled_p = 0; |
2424 | } | |
2425 | ||
23860348 | 2426 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2427 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2428 | |
36918e70 | 2429 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2430 | target (we'd otherwise be in an inconsistent state) and then |
2431 | propogate the error on up the exception chain. This ensures that | |
2432 | the caller doesn't stumble along blindly assuming that the | |
2433 | function succeeded. The CLI doesn't have this problem but other | |
2434 | UI's, such as MI do. | |
36918e70 AC |
2435 | |
2436 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2437 | this function should return an error indication letting the | |
ce2826aa | 2438 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2439 | ``target remote'' is directly wired to this function making that |
2440 | impossible. On a positive note, the CLI side of this problem has | |
2441 | been fixed - the function set_cmd_context() makes it possible for | |
2442 | all the ``target ....'' commands to share a common callback | |
2443 | function. See cli-dump.c. */ | |
109c3e39 AC |
2444 | { |
2445 | struct gdb_exception ex | |
2446 | = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); | |
2447 | if (ex.reason < 0) | |
2448 | { | |
2449 | pop_target (); | |
2450 | if (async_p) | |
2451 | wait_forever_enabled_p = 1; | |
2452 | throw_exception (ex); | |
2453 | } | |
2454 | } | |
c906108c | 2455 | |
92d1e331 DJ |
2456 | if (async_p) |
2457 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2458 | |
2459 | if (extended_p) | |
43ff13b4 | 2460 | { |
6240bebf | 2461 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2462 | putpkt ("!"); |
6d820c5c | 2463 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2464 | } |
a77053c2 | 2465 | |
9353355f | 2466 | post_create_inferior (¤t_target, from_tty); |
f78f6cf1 | 2467 | |
23860348 | 2468 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2469 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2470 | } |
2471 | ||
c906108c SS |
2472 | /* This takes a program previously attached to and detaches it. After |
2473 | this is done, GDB can be used to debug some other program. We | |
2474 | better not have left any breakpoints in the target program or it'll | |
2475 | die when it hits one. */ | |
2476 | ||
2477 | static void | |
fba45db2 | 2478 | remote_detach (char *args, int from_tty) |
c906108c | 2479 | { |
d01949b6 | 2480 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2481 | |
2482 | if (args) | |
8a3fe4f8 | 2483 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2484 | |
2485 | /* Tell the remote target to detach. */ | |
6d820c5c DJ |
2486 | strcpy (rs->buf, "D"); |
2487 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 2488 | |
23860348 | 2489 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2490 | if (target_is_async_p ()) |
2491 | serial_async (remote_desc, NULL, 0); | |
2492 | ||
cca728d0 | 2493 | target_mourn_inferior (); |
c906108c SS |
2494 | if (from_tty) |
2495 | puts_filtered ("Ending remote debugging.\n"); | |
2496 | } | |
2497 | ||
6ad8ae5c DJ |
2498 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2499 | ||
43ff13b4 | 2500 | static void |
597320e7 | 2501 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2502 | { |
43ff13b4 | 2503 | if (args) |
8a3fe4f8 | 2504 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2505 | |
23860348 | 2506 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2507 | if (target_is_async_p ()) |
2cd58942 | 2508 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2509 | |
cca728d0 | 2510 | target_mourn_inferior (); |
43ff13b4 JM |
2511 | if (from_tty) |
2512 | puts_filtered ("Ending remote debugging.\n"); | |
2513 | } | |
2514 | ||
c906108c SS |
2515 | /* Convert hex digit A to a number. */ |
2516 | ||
30559e10 | 2517 | static int |
fba45db2 | 2518 | fromhex (int a) |
c906108c SS |
2519 | { |
2520 | if (a >= '0' && a <= '9') | |
2521 | return a - '0'; | |
2522 | else if (a >= 'a' && a <= 'f') | |
2523 | return a - 'a' + 10; | |
2524 | else if (a >= 'A' && a <= 'F') | |
2525 | return a - 'A' + 10; | |
c5aa993b | 2526 | else |
8a3fe4f8 | 2527 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2528 | } |
2529 | ||
30559e10 | 2530 | static int |
cfd77fa1 | 2531 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2532 | { |
2533 | int i; | |
2534 | ||
30559e10 MS |
2535 | for (i = 0; i < count; i++) |
2536 | { | |
2537 | if (hex[0] == 0 || hex[1] == 0) | |
2538 | { | |
2539 | /* Hex string is short, or of uneven length. | |
23860348 | 2540 | Return the count that has been converted so far. */ |
30559e10 MS |
2541 | return i; |
2542 | } | |
2543 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2544 | hex += 2; | |
2545 | } | |
2546 | return i; | |
2547 | } | |
2548 | ||
c906108c SS |
2549 | /* Convert number NIB to a hex digit. */ |
2550 | ||
2551 | static int | |
fba45db2 | 2552 | tohex (int nib) |
c906108c SS |
2553 | { |
2554 | if (nib < 10) | |
c5aa993b | 2555 | return '0' + nib; |
c906108c | 2556 | else |
c5aa993b | 2557 | return 'a' + nib - 10; |
c906108c | 2558 | } |
30559e10 MS |
2559 | |
2560 | static int | |
cfd77fa1 | 2561 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2562 | { |
2563 | int i; | |
23860348 | 2564 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2565 | if (count == 0) |
cfd77fa1 | 2566 | count = strlen ((char *) bin); |
30559e10 MS |
2567 | |
2568 | for (i = 0; i < count; i++) | |
2569 | { | |
2570 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2571 | *hex++ = tohex (*bin++ & 0xf); | |
2572 | } | |
2573 | *hex = 0; | |
2574 | return i; | |
2575 | } | |
c906108c | 2576 | \f |
506fb367 DJ |
2577 | /* Check for the availability of vCont. This function should also check |
2578 | the response. */ | |
c906108c SS |
2579 | |
2580 | static void | |
6d820c5c | 2581 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2582 | { |
2e9f7625 | 2583 | char *buf; |
6d820c5c | 2584 | |
2e9f7625 DJ |
2585 | strcpy (rs->buf, "vCont?"); |
2586 | putpkt (rs->buf); | |
6d820c5c | 2587 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2588 | buf = rs->buf; |
c906108c | 2589 | |
506fb367 DJ |
2590 | /* Make sure that the features we assume are supported. */ |
2591 | if (strncmp (buf, "vCont", 5) == 0) | |
2592 | { | |
2593 | char *p = &buf[5]; | |
2594 | int support_s, support_S, support_c, support_C; | |
2595 | ||
2596 | support_s = 0; | |
2597 | support_S = 0; | |
2598 | support_c = 0; | |
2599 | support_C = 0; | |
2600 | while (p && *p == ';') | |
2601 | { | |
2602 | p++; | |
2603 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2604 | support_s = 1; | |
2605 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2606 | support_S = 1; | |
2607 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2608 | support_c = 1; | |
2609 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2610 | support_C = 1; | |
2611 | ||
2612 | p = strchr (p, ';'); | |
2613 | } | |
c906108c | 2614 | |
506fb367 DJ |
2615 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2616 | BUF will make packet_ok disable the packet. */ | |
2617 | if (!support_s || !support_S || !support_c || !support_C) | |
2618 | buf[0] = 0; | |
2619 | } | |
c906108c | 2620 | |
444abaca | 2621 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2622 | } |
c906108c | 2623 | |
506fb367 DJ |
2624 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2625 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2626 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2627 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2628 | signalled is given in the global INFERIOR_PTID. This function returns | |
2629 | non-zero iff it resumes the inferior. | |
44eaed12 | 2630 | |
506fb367 DJ |
2631 | This function issues a strict subset of all possible vCont commands at the |
2632 | moment. */ | |
44eaed12 | 2633 | |
506fb367 DJ |
2634 | static int |
2635 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2636 | { | |
2637 | struct remote_state *rs = get_remote_state (); | |
2638 | int pid = PIDGET (ptid); | |
2963ee1d | 2639 | char *buf = NULL, *outbuf; |
506fb367 | 2640 | struct cleanup *old_cleanup; |
44eaed12 | 2641 | |
444abaca | 2642 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2643 | remote_vcont_probe (rs); |
44eaed12 | 2644 | |
444abaca | 2645 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2646 | return 0; |
44eaed12 | 2647 | |
506fb367 DJ |
2648 | /* If we could generate a wider range of packets, we'd have to worry |
2649 | about overflowing BUF. Should there be a generic | |
2650 | "multi-part-packet" packet? */ | |
2651 | ||
2652 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2653 | { |
506fb367 DJ |
2654 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2655 | don't have any PID numbers the inferior will understand. Make sure | |
2656 | to only send forms that do not specify a PID. */ | |
2657 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2658 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2659 | else if (step) |
2963ee1d | 2660 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2661 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2662 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2663 | else |
2963ee1d | 2664 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2665 | } |
2666 | else if (pid == -1) | |
2667 | { | |
2668 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2669 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2670 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2671 | PIDGET (inferior_ptid)); | |
506fb367 | 2672 | else if (step) |
2963ee1d | 2673 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2674 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2675 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2676 | PIDGET (inferior_ptid)); | |
506fb367 | 2677 | else |
2963ee1d | 2678 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2679 | } |
2680 | else | |
506fb367 DJ |
2681 | { |
2682 | /* Scheduler locking; resume only PTID. */ | |
2683 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2684 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2685 | else if (step) |
2963ee1d | 2686 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2687 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2688 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2689 | else |
2963ee1d | 2690 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2691 | } |
c906108c | 2692 | |
ea9c271d | 2693 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2694 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2695 | |
2696 | putpkt (outbuf); | |
506fb367 DJ |
2697 | |
2698 | do_cleanups (old_cleanup); | |
2699 | ||
2700 | return 1; | |
c906108c | 2701 | } |
43ff13b4 | 2702 | |
506fb367 DJ |
2703 | /* Tell the remote machine to resume. */ |
2704 | ||
2705 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2706 | ||
2707 | static int last_sent_step; | |
2708 | ||
43ff13b4 | 2709 | static void |
506fb367 | 2710 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2711 | { |
d01949b6 | 2712 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2713 | char *buf; |
39f77062 | 2714 | int pid = PIDGET (ptid); |
43ff13b4 | 2715 | |
43ff13b4 JM |
2716 | last_sent_signal = siggnal; |
2717 | last_sent_step = step; | |
2718 | ||
2719 | /* A hook for when we need to do something at the last moment before | |
2720 | resumption. */ | |
9a4105ab AC |
2721 | if (deprecated_target_resume_hook) |
2722 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2723 | |
506fb367 DJ |
2724 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2725 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2726 | return; | |
2727 | ||
2728 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2729 | if (pid == -1) | |
23860348 | 2730 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2731 | else |
23860348 | 2732 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2733 | |
2e9f7625 | 2734 | buf = rs->buf; |
43ff13b4 JM |
2735 | if (siggnal != TARGET_SIGNAL_0) |
2736 | { | |
2737 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2738 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2739 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2740 | buf[3] = '\0'; |
2741 | } | |
2742 | else | |
c5aa993b | 2743 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2744 | |
44eaed12 | 2745 | putpkt (buf); |
506fb367 DJ |
2746 | } |
2747 | ||
23860348 | 2748 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2749 | static void |
2750 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2751 | { | |
2752 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2753 | |
2acceee2 JM |
2754 | /* We are about to start executing the inferior, let's register it |
2755 | with the event loop. NOTE: this is the one place where all the | |
2756 | execution commands end up. We could alternatively do this in each | |
23860348 | 2757 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2758 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2759 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2760 | NOT asynchronously. */ |
362646f5 | 2761 | if (target_can_async_p ()) |
2acceee2 | 2762 | target_async (inferior_event_handler, 0); |
23860348 | 2763 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2764 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2765 | this? Instead, should the client of target just assume (for | |
2766 | async targets) that the target is going to start executing? Is | |
2767 | this information already found in the continuation block? */ | |
ed9a39eb | 2768 | if (target_is_async_p ()) |
2acceee2 | 2769 | target_executing = 1; |
43ff13b4 | 2770 | } |
c906108c | 2771 | \f |
43ff13b4 JM |
2772 | |
2773 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2774 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2775 | static void |
fba45db2 | 2776 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2777 | { |
c5aa993b | 2778 | sigint_remote_token = |
43ff13b4 JM |
2779 | create_async_signal_handler (async_remote_interrupt, NULL); |
2780 | signal (SIGINT, handle_remote_sigint); | |
2781 | } | |
2782 | ||
23860348 | 2783 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2784 | static void |
fba45db2 | 2785 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2786 | { |
2787 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2788 | sigint_remote_twice_token = |
43ff13b4 JM |
2789 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2790 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2791 | } | |
2792 | ||
2793 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2794 | sent once. It will take effect the second time that the user sends | |
23860348 | 2795 | a ^C. */ |
43ff13b4 | 2796 | static void |
fba45db2 | 2797 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2798 | { |
2799 | signal (sig, handle_sigint); | |
c5aa993b | 2800 | sigint_remote_twice_token = |
2df3850c | 2801 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2802 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2803 | } | |
2804 | ||
6426a772 | 2805 | /* Perform the real interruption of the target execution, in response |
23860348 | 2806 | to a ^C. */ |
c5aa993b | 2807 | static void |
fba45db2 | 2808 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2809 | { |
2810 | if (remote_debug) | |
2811 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2812 | ||
2813 | target_stop (); | |
2814 | } | |
2815 | ||
2816 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2817 | up on the target alltogether. */ |
2df3850c | 2818 | void |
fba45db2 | 2819 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2820 | { |
2df3850c JM |
2821 | if (remote_debug) |
2822 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2823 | /* Do something only if the target was not killed by the previous |
23860348 | 2824 | cntl-C. */ |
6426a772 JM |
2825 | if (target_executing) |
2826 | { | |
2827 | interrupt_query (); | |
2828 | signal (SIGINT, handle_remote_sigint); | |
2829 | } | |
43ff13b4 JM |
2830 | } |
2831 | ||
2832 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2833 | stopped. */ |
6426a772 JM |
2834 | static void |
2835 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2836 | { |
2837 | signal (SIGINT, handle_sigint); | |
2838 | if (sigint_remote_twice_token) | |
2bc416ba | 2839 | delete_async_signal_handler ((struct async_signal_handler **) |
23860348 | 2840 | &sigint_remote_twice_token); |
43ff13b4 | 2841 | if (sigint_remote_token) |
2bc416ba | 2842 | delete_async_signal_handler ((struct async_signal_handler **) |
23860348 | 2843 | &sigint_remote_token); |
43ff13b4 JM |
2844 | } |
2845 | ||
c906108c SS |
2846 | /* Send ^C to target to halt it. Target will respond, and send us a |
2847 | packet. */ | |
507f3c78 | 2848 | static void (*ofunc) (int); |
c906108c | 2849 | |
7a292a7a SS |
2850 | /* The command line interface's stop routine. This function is installed |
2851 | as a signal handler for SIGINT. The first time a user requests a | |
2852 | stop, we call remote_stop to send a break or ^C. If there is no | |
2853 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2854 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2855 | static void |
fba45db2 | 2856 | remote_interrupt (int signo) |
c906108c | 2857 | { |
23860348 | 2858 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2859 | signal (signo, remote_interrupt_twice); |
2860 | ||
2861 | if (remote_debug) | |
0f71a2f6 | 2862 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2863 | |
2864 | target_stop (); | |
2865 | } | |
2866 | ||
2867 | /* The user typed ^C twice. */ | |
2868 | ||
2869 | static void | |
fba45db2 | 2870 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2871 | { |
2872 | signal (signo, ofunc); | |
2873 | interrupt_query (); | |
c906108c SS |
2874 | signal (signo, remote_interrupt); |
2875 | } | |
7a292a7a SS |
2876 | |
2877 | /* This is the generic stop called via the target vector. When a target | |
2878 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2879 | will eventually end up here. */ |
c906108c | 2880 | static void |
fba45db2 | 2881 | remote_stop (void) |
c906108c | 2882 | { |
7a292a7a SS |
2883 | /* Send a break or a ^C, depending on user preference. */ |
2884 | if (remote_debug) | |
0f71a2f6 | 2885 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2886 | |
7a292a7a | 2887 | if (remote_break) |
2cd58942 | 2888 | serial_send_break (remote_desc); |
c906108c | 2889 | else |
2cd58942 | 2890 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2891 | } |
2892 | ||
2893 | /* Ask the user what to do when an interrupt is received. */ | |
2894 | ||
2895 | static void | |
fba45db2 | 2896 | interrupt_query (void) |
c906108c SS |
2897 | { |
2898 | target_terminal_ours (); | |
2899 | ||
2900 | if (query ("Interrupted while waiting for the program.\n\ | |
2901 | Give up (and stop debugging it)? ")) | |
2902 | { | |
2903 | target_mourn_inferior (); | |
315a522e | 2904 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2905 | } |
2906 | ||
2907 | target_terminal_inferior (); | |
2908 | } | |
2909 | ||
6426a772 JM |
2910 | /* Enable/disable target terminal ownership. Most targets can use |
2911 | terminal groups to control terminal ownership. Remote targets are | |
2912 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2913 | is required. */ |
6426a772 JM |
2914 | |
2915 | static void | |
2916 | remote_async_terminal_inferior (void) | |
2917 | { | |
2918 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2919 | sync_execution here. This function should only be called when | |
2920 | GDB is resuming the inferior in the forground. A background | |
2921 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2922 | consequently should not call this code. */ |
6426a772 JM |
2923 | if (!sync_execution) |
2924 | return; | |
2925 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2926 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2927 | to an asynchronous target with a synchronous command calls this | |
2928 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2929 | stops trying to transfer the terminal to the target when it | |
2930 | shouldn't this guard can go away. */ | |
2931 | if (!remote_async_terminal_ours_p) | |
2932 | return; | |
2933 | delete_file_handler (input_fd); | |
2934 | remote_async_terminal_ours_p = 0; | |
2935 | initialize_sigint_signal_handler (); | |
2936 | /* NOTE: At this point we could also register our selves as the | |
2937 | recipient of all input. Any characters typed could then be | |
23860348 | 2938 | passed on down to the target. */ |
6426a772 JM |
2939 | } |
2940 | ||
2941 | static void | |
2942 | remote_async_terminal_ours (void) | |
2943 | { | |
23860348 | 2944 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2945 | if (!sync_execution) |
2946 | return; | |
23860348 | 2947 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2948 | if (remote_async_terminal_ours_p) |
2949 | return; | |
2950 | cleanup_sigint_signal_handler (NULL); | |
2951 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2952 | remote_async_terminal_ours_p = 1; | |
2953 | } | |
2954 | ||
c906108c SS |
2955 | /* If nonzero, ignore the next kill. */ |
2956 | ||
2957 | int kill_kludge; | |
2958 | ||
2959 | void | |
917317f4 | 2960 | remote_console_output (char *msg) |
c906108c SS |
2961 | { |
2962 | char *p; | |
2963 | ||
c5aa993b | 2964 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2965 | { |
2966 | char tb[2]; | |
2967 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2968 | tb[0] = c; | |
2969 | tb[1] = 0; | |
43ff13b4 | 2970 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2971 | } |
917317f4 | 2972 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2973 | } |
2974 | ||
0f71a2f6 JM |
2975 | /* Wait until the remote machine stops, then return, |
2976 | storing status in STATUS just as `wait' would. | |
802188a7 | 2977 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2978 | remote OS, is the thread-id. */ |
c906108c | 2979 | |
39f77062 KB |
2980 | static ptid_t |
2981 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2982 | { |
d01949b6 | 2983 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 2984 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 2985 | ULONGEST thread_num = -1; |
3c3bea1c | 2986 | ULONGEST addr; |
c906108c SS |
2987 | |
2988 | status->kind = TARGET_WAITKIND_EXITED; | |
2989 | status->value.integer = 0; | |
2990 | ||
2991 | while (1) | |
2992 | { | |
2e9f7625 | 2993 | char *buf, *p; |
c906108c | 2994 | |
c906108c | 2995 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 2996 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
2997 | signal (SIGINT, ofunc); |
2998 | ||
2e9f7625 DJ |
2999 | buf = rs->buf; |
3000 | ||
c906108c | 3001 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3002 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3003 | if (deprecated_target_wait_loop_hook) |
3004 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 3005 | |
3c3bea1c GS |
3006 | remote_stopped_by_watchpoint_p = 0; |
3007 | ||
c906108c SS |
3008 | switch (buf[0]) |
3009 | { | |
23860348 | 3010 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3011 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 3012 | continue; |
23860348 | 3013 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3014 | remote_fileio_request (buf); |
3015 | continue; | |
23860348 | 3016 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 3017 | { |
cfd77fa1 | 3018 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 3019 | |
23860348 | 3020 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 3021 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3022 | ss = signal number |
3023 | n... = register number | |
3024 | r... = register contents | |
3025 | */ | |
c906108c SS |
3026 | p = &buf[3]; /* after Txx */ |
3027 | ||
3028 | while (*p) | |
3029 | { | |
cfd77fa1 | 3030 | char *p1; |
c906108c | 3031 | char *p_temp; |
97345198 | 3032 | int fieldsize; |
3c3bea1c GS |
3033 | LONGEST pnum = 0; |
3034 | ||
23860348 MS |
3035 | /* If the packet contains a register number save it in |
3036 | pnum and set p1 to point to the character following | |
3037 | it. Otherwise p1 points to p. */ | |
c906108c | 3038 | |
23860348 MS |
3039 | /* If this packet is an awatch packet, don't parse the |
3040 | 'a' as a register number. */ | |
3c3bea1c GS |
3041 | |
3042 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3043 | { | |
3044 | /* Read the ``P'' register number. */ | |
3045 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3046 | p1 = p_temp; |
3c3bea1c | 3047 | } |
802188a7 | 3048 | else |
3c3bea1c | 3049 | p1 = p; |
c906108c | 3050 | |
23860348 | 3051 | if (p1 == p) /* No register number present here. */ |
c906108c | 3052 | { |
cfd77fa1 | 3053 | p1 = strchr (p, ':'); |
c906108c | 3054 | if (p1 == NULL) |
670aa98f | 3055 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3056 | Packet: '%s'\n"), |
670aa98f | 3057 | p, buf); |
3c3bea1c | 3058 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3059 | { |
3060 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3061 | record_currthread (thread_num); | |
cfd77fa1 | 3062 | p = p_temp; |
c906108c | 3063 | } |
3c3bea1c GS |
3064 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3065 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3066 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3067 | { | |
3068 | remote_stopped_by_watchpoint_p = 1; | |
3069 | p = unpack_varlen_hex (++p1, &addr); | |
3070 | remote_watch_data_address = (CORE_ADDR)addr; | |
3071 | } | |
3072 | else | |
3073 | { | |
3074 | /* Silently skip unknown optional info. */ | |
3075 | p_temp = strchr (p1 + 1, ';'); | |
3076 | if (p_temp) | |
cfd77fa1 | 3077 | p = p_temp; |
3c3bea1c | 3078 | } |
c906108c SS |
3079 | } |
3080 | else | |
3081 | { | |
ea9c271d | 3082 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3083 | p = p1; |
3084 | ||
3085 | if (*p++ != ':') | |
8a3fe4f8 AC |
3086 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3087 | Packet: '%s'\n"), | |
3fcb8548 | 3088 | p, buf); |
c906108c | 3089 | |
ad10f812 | 3090 | if (reg == NULL) |
8a3fe4f8 AC |
3091 | error (_("Remote sent bad register number %s: %s\n\ |
3092 | Packet: '%s'\n"), | |
3fcb8548 | 3093 | phex_nz (pnum, 0), p, buf); |
c906108c | 3094 | |
cfd77fa1 | 3095 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3096 | register_size (current_gdbarch, |
23860348 | 3097 | reg->regnum)); |
97345198 | 3098 | p += 2 * fieldsize; |
2bc416ba | 3099 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3100 | reg->regnum)) |
8a3fe4f8 | 3101 | warning (_("Remote reply is too short: %s"), buf); |
2bc416ba | 3102 | regcache_raw_supply (current_regcache, |
23860348 | 3103 | reg->regnum, regs); |
c906108c SS |
3104 | } |
3105 | ||
3106 | if (*p++ != ';') | |
2bc416ba | 3107 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3108 | buf, p); |
c906108c SS |
3109 | } |
3110 | } | |
3111 | /* fall through */ | |
23860348 | 3112 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
3113 | status->kind = TARGET_WAITKIND_STOPPED; |
3114 | status->value.sig = (enum target_signal) | |
3115 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3116 | ||
0f71a2f6 JM |
3117 | if (buf[3] == 'p') |
3118 | { | |
0f71a2f6 JM |
3119 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3120 | record_currthread (thread_num); | |
3121 | } | |
c906108c | 3122 | goto got_status; |
23860348 | 3123 | case 'W': /* Target exited. */ |
c906108c SS |
3124 | { |
3125 | /* The remote process exited. */ | |
3126 | status->kind = TARGET_WAITKIND_EXITED; | |
3127 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3128 | goto got_status; | |
3129 | } | |
3130 | case 'X': | |
3131 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3132 | status->value.sig = (enum target_signal) | |
3133 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3134 | kill_kludge = 1; | |
3135 | ||
3136 | goto got_status; | |
23860348 | 3137 | case 'O': /* Console output. */ |
c906108c SS |
3138 | remote_console_output (buf + 1); |
3139 | continue; | |
3140 | case '\0': | |
3141 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3142 | { | |
3143 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3144 | the remote system doesn't support it. */ |
c906108c SS |
3145 | target_terminal_ours_for_output (); |
3146 | printf_filtered | |
3147 | ("Can't send signals to this remote system. %s not sent.\n", | |
3148 | target_signal_to_name (last_sent_signal)); | |
3149 | last_sent_signal = TARGET_SIGNAL_0; | |
3150 | target_terminal_inferior (); | |
3151 | ||
3152 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3153 | putpkt ((char *) buf); | |
3154 | continue; | |
3155 | } | |
3156 | /* else fallthrough */ | |
3157 | default: | |
8a3fe4f8 | 3158 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3159 | continue; |
3160 | } | |
3161 | } | |
c5aa993b | 3162 | got_status: |
c906108c SS |
3163 | if (thread_num != -1) |
3164 | { | |
39f77062 | 3165 | return pid_to_ptid (thread_num); |
c906108c | 3166 | } |
39f77062 | 3167 | return inferior_ptid; |
c906108c SS |
3168 | } |
3169 | ||
23860348 | 3170 | /* Async version of remote_wait. */ |
39f77062 KB |
3171 | static ptid_t |
3172 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3173 | { |
d01949b6 | 3174 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3175 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3176 | ULONGEST thread_num = -1; |
3c3bea1c | 3177 | ULONGEST addr; |
43ff13b4 JM |
3178 | |
3179 | status->kind = TARGET_WAITKIND_EXITED; | |
3180 | status->value.integer = 0; | |
3181 | ||
3c3bea1c GS |
3182 | remote_stopped_by_watchpoint_p = 0; |
3183 | ||
43ff13b4 JM |
3184 | while (1) |
3185 | { | |
2e9f7625 | 3186 | char *buf, *p; |
c5aa993b | 3187 | |
ed9a39eb | 3188 | if (!target_is_async_p ()) |
43ff13b4 | 3189 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3190 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3191 | _never_ wait for ever -> test on target_is_async_p(). | |
3192 | However, before we do that we need to ensure that the caller | |
23860348 | 3193 | knows how to take the target into/out of async mode. */ |
6d820c5c | 3194 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 3195 | if (!target_is_async_p ()) |
43ff13b4 JM |
3196 | signal (SIGINT, ofunc); |
3197 | ||
2e9f7625 DJ |
3198 | buf = rs->buf; |
3199 | ||
43ff13b4 | 3200 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3201 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3202 | if (deprecated_target_wait_loop_hook) |
3203 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3204 | |
3205 | switch (buf[0]) | |
3206 | { | |
23860348 | 3207 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3208 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3209 | continue; |
23860348 | 3210 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3211 | remote_fileio_request (buf); |
3212 | continue; | |
23860348 | 3213 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3214 | { |
cfd77fa1 | 3215 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3216 | |
23860348 | 3217 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3218 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3219 | ss = signal number |
3220 | n... = register number | |
3221 | r... = register contents | |
3222 | */ | |
43ff13b4 JM |
3223 | p = &buf[3]; /* after Txx */ |
3224 | ||
3225 | while (*p) | |
3226 | { | |
cfd77fa1 | 3227 | char *p1; |
43ff13b4 | 3228 | char *p_temp; |
6c3f2dbf | 3229 | int fieldsize; |
3c3bea1c | 3230 | long pnum = 0; |
43ff13b4 | 3231 | |
23860348 MS |
3232 | /* If the packet contains a register number, save it |
3233 | in pnum and set p1 to point to the character | |
3234 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3235 | |
3236 | /* If this packet is an awatch packet, don't parse the 'a' | |
3237 | as a register number. */ | |
802188a7 | 3238 | |
3c3bea1c GS |
3239 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3240 | { | |
3241 | /* Read the register number. */ | |
3242 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3243 | p1 = p_temp; |
3c3bea1c | 3244 | } |
802188a7 | 3245 | else |
3c3bea1c | 3246 | p1 = p; |
43ff13b4 | 3247 | |
23860348 | 3248 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3249 | { |
cfd77fa1 | 3250 | p1 = strchr (p, ':'); |
43ff13b4 | 3251 | if (p1 == NULL) |
8a3fe4f8 AC |
3252 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3253 | Packet: '%s'\n"), | |
3fcb8548 | 3254 | p, buf); |
3c3bea1c | 3255 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3256 | { |
3257 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3258 | record_currthread (thread_num); | |
cfd77fa1 | 3259 | p = p_temp; |
43ff13b4 | 3260 | } |
3c3bea1c GS |
3261 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3262 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3263 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3264 | { | |
3265 | remote_stopped_by_watchpoint_p = 1; | |
3266 | p = unpack_varlen_hex (++p1, &addr); | |
3267 | remote_watch_data_address = (CORE_ADDR)addr; | |
3268 | } | |
3269 | else | |
3270 | { | |
3271 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3272 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3273 | if (p_temp) |
3274 | p = p_temp; | |
3275 | } | |
43ff13b4 | 3276 | } |
802188a7 | 3277 | |
43ff13b4 JM |
3278 | else |
3279 | { | |
ea9c271d | 3280 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3281 | p = p1; |
43ff13b4 | 3282 | if (*p++ != ':') |
8a3fe4f8 AC |
3283 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3284 | Packet: '%s'\n"), | |
3fcb8548 | 3285 | p, buf); |
43ff13b4 | 3286 | |
ad10f812 | 3287 | if (reg == NULL) |
8a3fe4f8 AC |
3288 | error (_("Remote sent bad register number %ld: %s\n\ |
3289 | Packet: '%s'\n"), | |
3fcb8548 | 3290 | pnum, p, buf); |
43ff13b4 | 3291 | |
cfd77fa1 | 3292 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3293 | register_size (current_gdbarch, |
23860348 | 3294 | reg->regnum)); |
6c3f2dbf | 3295 | p += 2 * fieldsize; |
2bc416ba | 3296 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3297 | reg->regnum)) |
8a3fe4f8 | 3298 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 3299 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3300 | } |
3301 | ||
3302 | if (*p++ != ';') | |
8a3fe4f8 | 3303 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3304 | buf, p); |
43ff13b4 JM |
3305 | } |
3306 | } | |
3307 | /* fall through */ | |
23860348 | 3308 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3309 | status->kind = TARGET_WAITKIND_STOPPED; |
3310 | status->value.sig = (enum target_signal) | |
3311 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3312 | ||
3313 | if (buf[3] == 'p') | |
3314 | { | |
43ff13b4 JM |
3315 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3316 | record_currthread (thread_num); | |
3317 | } | |
43ff13b4 | 3318 | goto got_status; |
23860348 | 3319 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3320 | { |
3321 | /* The remote process exited. */ | |
3322 | status->kind = TARGET_WAITKIND_EXITED; | |
3323 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3324 | goto got_status; | |
3325 | } | |
3326 | case 'X': | |
3327 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3328 | status->value.sig = (enum target_signal) | |
3329 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3330 | kill_kludge = 1; | |
3331 | ||
3332 | goto got_status; | |
23860348 | 3333 | case 'O': /* Console output. */ |
43ff13b4 | 3334 | remote_console_output (buf + 1); |
c4093a6a | 3335 | /* Return immediately to the event loop. The event loop will |
23860348 | 3336 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3337 | status->kind = TARGET_WAITKIND_IGNORE; |
3338 | goto got_status; | |
43ff13b4 JM |
3339 | case '\0': |
3340 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3341 | { | |
3342 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3343 | the remote system doesn't support it. */ |
43ff13b4 JM |
3344 | target_terminal_ours_for_output (); |
3345 | printf_filtered | |
3346 | ("Can't send signals to this remote system. %s not sent.\n", | |
3347 | target_signal_to_name (last_sent_signal)); | |
3348 | last_sent_signal = TARGET_SIGNAL_0; | |
3349 | target_terminal_inferior (); | |
3350 | ||
3351 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3352 | putpkt ((char *) buf); | |
3353 | continue; | |
3354 | } | |
3355 | /* else fallthrough */ | |
3356 | default: | |
8a3fe4f8 | 3357 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3358 | continue; |
3359 | } | |
3360 | } | |
c5aa993b | 3361 | got_status: |
43ff13b4 JM |
3362 | if (thread_num != -1) |
3363 | { | |
39f77062 | 3364 | return pid_to_ptid (thread_num); |
43ff13b4 | 3365 | } |
39f77062 | 3366 | return inferior_ptid; |
43ff13b4 JM |
3367 | } |
3368 | ||
c906108c SS |
3369 | /* Number of bytes of registers this stub implements. */ |
3370 | ||
3371 | static int register_bytes_found; | |
3372 | ||
3373 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3374 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3375 | |
b96ec7ac AC |
3376 | static int |
3377 | fetch_register_using_p (int regnum) | |
3378 | { | |
3379 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3380 | char *buf, *p; |
b96ec7ac AC |
3381 | char regp[MAX_REGISTER_SIZE]; |
3382 | int i; | |
3383 | ||
2e9f7625 | 3384 | p = rs->buf; |
fcad0fa4 JB |
3385 | *p++ = 'p'; |
3386 | p += hexnumstr (p, regnum); | |
3387 | *p++ = '\0'; | |
6d820c5c | 3388 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3389 | |
2e9f7625 DJ |
3390 | buf = rs->buf; |
3391 | ||
3f9a994c JB |
3392 | /* If the stub didn't recognize the packet, or if we got an error, |
3393 | tell our caller. */ | |
3394 | if (buf[0] == '\0' || buf[0] == 'E') | |
3395 | return 0; | |
3396 | ||
3397 | /* If this register is unfetchable, tell the regcache. */ | |
3398 | if (buf[0] == 'x') | |
8480adf2 | 3399 | { |
3f9a994c JB |
3400 | regcache_raw_supply (current_regcache, regnum, NULL); |
3401 | set_register_cached (regnum, -1); | |
8480adf2 | 3402 | return 1; |
b96ec7ac | 3403 | } |
b96ec7ac | 3404 | |
3f9a994c JB |
3405 | /* Otherwise, parse and supply the value. */ |
3406 | p = buf; | |
3407 | i = 0; | |
3408 | while (p[0] != 0) | |
3409 | { | |
3410 | if (p[1] == 0) | |
3411 | { | |
8a3fe4f8 | 3412 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3413 | return 0; |
3414 | } | |
3415 | ||
3416 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3417 | p += 2; | |
3418 | } | |
3419 | regcache_raw_supply (current_regcache, regnum, regp); | |
3420 | return 1; | |
b96ec7ac AC |
3421 | } |
3422 | ||
c906108c | 3423 | static void |
ad10f812 | 3424 | remote_fetch_registers (int regnum) |
c906108c | 3425 | { |
d01949b6 | 3426 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3427 | struct remote_arch_state *rsa = get_remote_arch_state (); |
2e9f7625 | 3428 | char *buf; |
c906108c SS |
3429 | int i; |
3430 | char *p; | |
ea9c271d | 3431 | char *regs = alloca (rsa->sizeof_g_packet); |
c906108c | 3432 | |
39f77062 | 3433 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3434 | |
b323314b AC |
3435 | if (regnum >= 0) |
3436 | { | |
ea9c271d | 3437 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); |
b323314b AC |
3438 | gdb_assert (reg != NULL); |
3439 | if (!reg->in_g_packet) | |
3440 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3441 | _("Attempt to fetch a non G-packet register when this " |
3442 | "remote.c does not support the p-packet.")); | |
b323314b | 3443 | } |
444abaca | 3444 | switch (remote_protocol_packets[PACKET_p].support) |
b96ec7ac AC |
3445 | { |
3446 | case PACKET_DISABLE: | |
3447 | break; | |
3448 | case PACKET_ENABLE: | |
3449 | if (fetch_register_using_p (regnum)) | |
3450 | return; | |
3451 | else | |
8a3fe4f8 | 3452 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3453 | case PACKET_SUPPORT_UNKNOWN: |
3454 | if (fetch_register_using_p (regnum)) | |
3455 | { | |
3456 | /* The stub recognized the 'p' packet. Remember this. */ | |
444abaca | 3457 | remote_protocol_packets[PACKET_p].support = PACKET_ENABLE; |
b96ec7ac AC |
3458 | return; |
3459 | } | |
3460 | else | |
3461 | { | |
3462 | /* The stub does not support the 'P' packet. Use 'G' | |
3463 | instead, and don't try using 'P' in the future (it | |
3464 | will just waste our time). */ | |
444abaca | 3465 | remote_protocol_packets[PACKET_p].support = PACKET_DISABLE; |
b96ec7ac AC |
3466 | break; |
3467 | } | |
3468 | } | |
b323314b | 3469 | |
2e9f7625 | 3470 | sprintf (rs->buf, "g"); |
6d820c5c | 3471 | remote_send (&rs->buf, &rs->buf_size); |
2e9f7625 | 3472 | buf = rs->buf; |
c906108c | 3473 | |
11cf8741 JM |
3474 | /* Save the size of the packet sent to us by the target. Its used |
3475 | as a heuristic when determining the max size of packets that the | |
23860348 | 3476 | target can safely receive. */ |
ea9c271d DJ |
3477 | if ((rsa->actual_register_packet_size) == 0) |
3478 | (rsa->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3479 | |
3480 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3481 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c SS |
3482 | |
3483 | /* We can get out of synch in various cases. If the first character | |
3484 | in the buffer is not a hex character, assume that has happened | |
3485 | and try to fetch another packet to read. */ | |
3486 | while ((buf[0] < '0' || buf[0] > '9') | |
3de11b2e | 3487 | && (buf[0] < 'A' || buf[0] > 'F') |
c906108c | 3488 | && (buf[0] < 'a' || buf[0] > 'f') |
23860348 | 3489 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3490 | { |
3491 | if (remote_debug) | |
0f71a2f6 JM |
3492 | fprintf_unfiltered (gdb_stdlog, |
3493 | "Bad register packet; fetching a new packet\n"); | |
6d820c5c | 3494 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3495 | buf = rs->buf; |
c906108c SS |
3496 | } |
3497 | ||
3498 | /* Reply describes registers byte by byte, each byte encoded as two | |
3499 | hex characters. Suck them all up, then supply them to the | |
3500 | register cacheing/storage mechanism. */ | |
3501 | ||
3502 | p = buf; | |
ea9c271d | 3503 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c SS |
3504 | { |
3505 | if (p[0] == 0) | |
3506 | break; | |
3507 | if (p[1] == 0) | |
3508 | { | |
8a3fe4f8 | 3509 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3510 | /* Don't change register_bytes_found in this case, and don't |
3511 | print a second warning. */ | |
3512 | goto supply_them; | |
3513 | } | |
3514 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3515 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3516 | else |
3517 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3518 | p += 2; | |
3519 | } | |
3520 | ||
3521 | if (i != register_bytes_found) | |
3522 | { | |
3523 | register_bytes_found = i; | |
2649061d AC |
3524 | if (REGISTER_BYTES_OK_P () |
3525 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3526 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3527 | } |
c5aa993b | 3528 | |
b323314b | 3529 | supply_them: |
ad10f812 | 3530 | { |
b323314b AC |
3531 | int i; |
3532 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3533 | { |
ea9c271d | 3534 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3535 | if (r->in_g_packet) |
3536 | { | |
8ccc1287 AC |
3537 | if (r->offset * 2 >= strlen (buf)) |
3538 | /* A short packet that didn't include the register's | |
3539 | value, this implies that the register is zero (and | |
3540 | not that the register is unavailable). Supply that | |
3541 | zero value. */ | |
3542 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3543 | else if (buf[r->offset * 2] == 'x') | |
3544 | { | |
3545 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3546 | /* The register isn't available, mark it as such (at | |
3547 | the same time setting the value to zero). */ | |
3548 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3549 | set_register_cached (i, -1); | |
3550 | } | |
3551 | else | |
3552 | regcache_raw_supply (current_regcache, r->regnum, | |
3553 | regs + r->offset); | |
b323314b | 3554 | } |
ad10f812 AC |
3555 | } |
3556 | } | |
c906108c SS |
3557 | } |
3558 | ||
3559 | /* Prepare to store registers. Since we may send them all (using a | |
3560 | 'G' request), we have to read out the ones we don't want to change | |
3561 | first. */ | |
3562 | ||
c5aa993b | 3563 | static void |
fba45db2 | 3564 | remote_prepare_to_store (void) |
c906108c | 3565 | { |
ea9c271d | 3566 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3567 | int i; |
cfd77fa1 | 3568 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3569 | |
c906108c | 3570 | /* Make sure the entire registers array is valid. */ |
444abaca | 3571 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3572 | { |
3573 | case PACKET_DISABLE: | |
3574 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3575 | /* Make sure all the necessary registers are cached. */ |
3576 | for (i = 0; i < NUM_REGS; i++) | |
ea9c271d DJ |
3577 | if (rsa->regs[i].in_g_packet) |
3578 | regcache_raw_read (current_regcache, rsa->regs[i].regnum, buf); | |
5a2468f5 JM |
3579 | break; |
3580 | case PACKET_ENABLE: | |
3581 | break; | |
3582 | } | |
3583 | } | |
3584 | ||
ad10f812 | 3585 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3586 | packet was not recognized. */ |
5a2468f5 JM |
3587 | |
3588 | static int | |
ad10f812 | 3589 | store_register_using_P (int regnum) |
5a2468f5 | 3590 | { |
d01949b6 | 3591 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
3592 | struct remote_arch_state *rsa = get_remote_arch_state (); |
3593 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
5a2468f5 | 3594 | /* Try storing a single register. */ |
6d820c5c | 3595 | char *buf = rs->buf; |
cfd77fa1 | 3596 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3597 | char *p; |
5a2468f5 | 3598 | |
ea9c271d | 3599 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3600 | p = buf + strlen (buf); |
822c9732 | 3601 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3602 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3603 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 3604 | |
2e9f7625 | 3605 | return rs->buf[0] != '\0'; |
c906108c SS |
3606 | } |
3607 | ||
5a2468f5 | 3608 | |
23860348 MS |
3609 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3610 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3611 | |
3612 | static void | |
ad10f812 | 3613 | remote_store_registers (int regnum) |
c906108c | 3614 | { |
d01949b6 | 3615 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3616 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3617 | gdb_byte *regs; |
c906108c SS |
3618 | char *p; |
3619 | ||
39f77062 | 3620 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3621 | |
ad10f812 | 3622 | if (regnum >= 0) |
c906108c | 3623 | { |
444abaca | 3624 | switch (remote_protocol_packets[PACKET_P].support) |
c906108c | 3625 | { |
5a2468f5 JM |
3626 | case PACKET_DISABLE: |
3627 | break; | |
3628 | case PACKET_ENABLE: | |
ad10f812 | 3629 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3630 | return; |
3631 | else | |
8a3fe4f8 | 3632 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3633 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3634 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3635 | { |
3636 | /* The stub recognized the 'P' packet. Remember this. */ | |
444abaca | 3637 | remote_protocol_packets[PACKET_P].support = PACKET_ENABLE; |
5a2468f5 JM |
3638 | return; |
3639 | } | |
3640 | else | |
3641 | { | |
3642 | /* The stub does not support the 'P' packet. Use 'G' | |
3643 | instead, and don't try using 'P' in the future (it | |
3644 | will just waste our time). */ | |
444abaca | 3645 | remote_protocol_packets[PACKET_P].support = PACKET_DISABLE; |
5a2468f5 JM |
3646 | break; |
3647 | } | |
c906108c | 3648 | } |
c906108c SS |
3649 | } |
3650 | ||
193cb69f AC |
3651 | /* Extract all the registers in the regcache copying them into a |
3652 | local buffer. */ | |
3653 | { | |
b323314b | 3654 | int i; |
ea9c271d DJ |
3655 | regs = alloca (rsa->sizeof_g_packet); |
3656 | memset (regs, 0, rsa->sizeof_g_packet); | |
b323314b | 3657 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3658 | { |
ea9c271d | 3659 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3660 | if (r->in_g_packet) |
822c9732 | 3661 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3662 | } |
3663 | } | |
c906108c SS |
3664 | |
3665 | /* Command describes registers byte by byte, | |
3666 | each byte encoded as two hex characters. */ | |
6d820c5c | 3667 | p = rs->buf; |
193cb69f | 3668 | *p++ = 'G'; |
c906108c | 3669 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3670 | bin2hex (regs, p, register_bytes_found); |
6d820c5c | 3671 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3672 | } |
c906108c SS |
3673 | \f |
3674 | ||
3675 | /* Return the number of hex digits in num. */ | |
3676 | ||
3677 | static int | |
fba45db2 | 3678 | hexnumlen (ULONGEST num) |
c906108c SS |
3679 | { |
3680 | int i; | |
3681 | ||
3682 | for (i = 0; num != 0; i++) | |
3683 | num >>= 4; | |
3684 | ||
3685 | return max (i, 1); | |
3686 | } | |
3687 | ||
2df3850c | 3688 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3689 | |
3690 | static int | |
fba45db2 | 3691 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3692 | { |
c906108c | 3693 | int len = hexnumlen (num); |
2df3850c JM |
3694 | return hexnumnstr (buf, num, len); |
3695 | } | |
3696 | ||
c906108c | 3697 | |
2df3850c | 3698 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3699 | |
2df3850c | 3700 | static int |
fba45db2 | 3701 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3702 | { |
3703 | int i; | |
3704 | ||
3705 | buf[width] = '\0'; | |
3706 | ||
3707 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3708 | { |
c5aa993b | 3709 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3710 | num >>= 4; |
3711 | } | |
3712 | ||
2df3850c | 3713 | return width; |
c906108c SS |
3714 | } |
3715 | ||
23860348 | 3716 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3717 | |
3718 | static CORE_ADDR | |
fba45db2 | 3719 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3720 | { |
3721 | if (remote_address_size > 0 | |
3722 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3723 | { | |
3724 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3725 | in a ULONGEST variable. */ |
c906108c SS |
3726 | ULONGEST mask = 1; |
3727 | mask = (mask << remote_address_size) - 1; | |
3728 | addr &= mask; | |
3729 | } | |
3730 | return addr; | |
3731 | } | |
3732 | ||
a31ea83d DJ |
3733 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
3734 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
3735 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
3736 | (which may be more than *OUT_LEN due to escape characters). The | |
3737 | total number of bytes in the output buffer will be at most | |
3738 | OUT_MAXLEN. */ | |
3739 | ||
3740 | static int | |
3741 | remote_escape_output (const gdb_byte *buffer, int len, | |
3742 | gdb_byte *out_buf, int *out_len, | |
3743 | int out_maxlen) | |
3744 | { | |
3745 | int input_index, output_index; | |
3746 | ||
3747 | output_index = 0; | |
3748 | for (input_index = 0; input_index < len; input_index++) | |
3749 | { | |
3750 | gdb_byte b = buffer[input_index]; | |
3751 | ||
3752 | if (b == '$' || b == '#' || b == '}') | |
3753 | { | |
3754 | /* These must be escaped. */ | |
3755 | if (output_index + 2 > out_maxlen) | |
3756 | break; | |
3757 | out_buf[output_index++] = '}'; | |
3758 | out_buf[output_index++] = b ^ 0x20; | |
3759 | } | |
3760 | else | |
3761 | { | |
3762 | if (output_index + 1 > out_maxlen) | |
3763 | break; | |
3764 | out_buf[output_index++] = b; | |
3765 | } | |
3766 | } | |
3767 | ||
3768 | *out_len = input_index; | |
3769 | return output_index; | |
3770 | } | |
3771 | ||
0876f84a DJ |
3772 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
3773 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
3774 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
3775 | ||
3776 | This function reverses remote_escape_output. It allows more | |
3777 | escaped characters than that function does, in particular because | |
3778 | '*' must be escaped to avoid the run-length encoding processing | |
3779 | in reading packets. */ | |
3780 | ||
3781 | static int | |
3782 | remote_unescape_input (const gdb_byte *buffer, int len, | |
3783 | gdb_byte *out_buf, int out_maxlen) | |
3784 | { | |
3785 | int input_index, output_index; | |
3786 | int escaped; | |
3787 | ||
3788 | output_index = 0; | |
3789 | escaped = 0; | |
3790 | for (input_index = 0; input_index < len; input_index++) | |
3791 | { | |
3792 | gdb_byte b = buffer[input_index]; | |
3793 | ||
3794 | if (output_index + 1 > out_maxlen) | |
3795 | { | |
3796 | warning (_("Received too much data from remote target;" | |
3797 | " ignoring overflow.")); | |
3798 | return output_index; | |
3799 | } | |
3800 | ||
3801 | if (escaped) | |
3802 | { | |
3803 | out_buf[output_index++] = b ^ 0x20; | |
3804 | escaped = 0; | |
3805 | } | |
3806 | else if (b == '}') | |
3807 | escaped = 1; | |
3808 | else | |
3809 | out_buf[output_index++] = b; | |
3810 | } | |
3811 | ||
3812 | if (escaped) | |
3813 | error (_("Unmatched escape character in target response.")); | |
3814 | ||
3815 | return output_index; | |
3816 | } | |
3817 | ||
c906108c SS |
3818 | /* Determine whether the remote target supports binary downloading. |
3819 | This is accomplished by sending a no-op memory write of zero length | |
3820 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3821 | the whole packet, since many stubs strip the eighth bit and |
3822 | subsequently compute a wrong checksum, which causes real havoc with | |
3823 | remote_write_bytes. | |
7a292a7a | 3824 | |
96baa820 JM |
3825 | NOTE: This can still lose if the serial line is not eight-bit |
3826 | clean. In cases like this, the user should clear "remote | |
23860348 | 3827 | X-packet". */ |
96baa820 | 3828 | |
c906108c | 3829 | static void |
fba45db2 | 3830 | check_binary_download (CORE_ADDR addr) |
c906108c | 3831 | { |
d01949b6 | 3832 | struct remote_state *rs = get_remote_state (); |
24b06219 | 3833 | |
444abaca | 3834 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3835 | { |
96baa820 JM |
3836 | case PACKET_DISABLE: |
3837 | break; | |
3838 | case PACKET_ENABLE: | |
3839 | break; | |
3840 | case PACKET_SUPPORT_UNKNOWN: | |
3841 | { | |
96baa820 | 3842 | char *p; |
802188a7 | 3843 | |
2e9f7625 | 3844 | p = rs->buf; |
96baa820 JM |
3845 | *p++ = 'X'; |
3846 | p += hexnumstr (p, (ULONGEST) addr); | |
3847 | *p++ = ','; | |
3848 | p += hexnumstr (p, (ULONGEST) 0); | |
3849 | *p++ = ':'; | |
3850 | *p = '\0'; | |
802188a7 | 3851 | |
2e9f7625 | 3852 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 3853 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3854 | |
2e9f7625 | 3855 | if (rs->buf[0] == '\0') |
96baa820 JM |
3856 | { |
3857 | if (remote_debug) | |
3858 | fprintf_unfiltered (gdb_stdlog, | |
3859 | "binary downloading NOT suppported by target\n"); | |
444abaca | 3860 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
3861 | } |
3862 | else | |
3863 | { | |
3864 | if (remote_debug) | |
3865 | fprintf_unfiltered (gdb_stdlog, | |
3866 | "binary downloading suppported by target\n"); | |
444abaca | 3867 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
3868 | } |
3869 | break; | |
3870 | } | |
c906108c SS |
3871 | } |
3872 | } | |
3873 | ||
3874 | /* Write memory data directly to the remote machine. | |
3875 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 3876 | HEADER is the starting part of the packet. |
c906108c SS |
3877 | MEMADDR is the address in the remote memory space. |
3878 | MYADDR is the address of the buffer in our space. | |
3879 | LEN is the number of bytes. | |
a76d924d DJ |
3880 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
3881 | should send data as binary ('X'), or hex-encoded ('M'). | |
3882 | ||
3883 | The function creates packet of the form | |
3884 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
3885 | ||
3886 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
3887 | ||
3888 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
3889 | are omitted. | |
3890 | ||
3891 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 3892 | error. Only transfer a single packet. */ |
c906108c | 3893 | |
a76d924d DJ |
3894 | static int |
3895 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
3896 | const gdb_byte *myaddr, int len, | |
3897 | char packet_format, int use_length) | |
c906108c | 3898 | { |
6d820c5c | 3899 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 3900 | char *p; |
a76d924d DJ |
3901 | char *plen = NULL; |
3902 | int plenlen = 0; | |
917317f4 JM |
3903 | int todo; |
3904 | int nr_bytes; | |
a257b5bb | 3905 | int payload_size; |
6765f3e5 | 3906 | int payload_length; |
a76d924d DJ |
3907 | int header_length; |
3908 | ||
3909 | if (packet_format != 'X' && packet_format != 'M') | |
3910 | internal_error (__FILE__, __LINE__, | |
3911 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 3912 | |
b2182ed2 DJ |
3913 | /* Should this be the selected frame? */ |
3914 | gdbarch_remote_translate_xfer_address (current_gdbarch, | |
3915 | current_regcache, | |
3916 | memaddr, len, | |
3917 | &memaddr, &len); | |
3918 | ||
3919 | if (len <= 0) | |
3920 | return 0; | |
3921 | ||
3de11b2e | 3922 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 3923 | |
6d820c5c DJ |
3924 | /* The packet buffer will be large enough for the payload; |
3925 | get_memory_packet_size ensures this. */ | |
a76d924d | 3926 | rs->buf[0] = '\0'; |
c906108c | 3927 | |
a257b5bb | 3928 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
3929 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
3930 | */ | |
a76d924d DJ |
3931 | payload_size -= strlen ("$,:#NN"); |
3932 | if (!use_length) | |
3933 | /* The comma won't be used. */ | |
3934 | payload_size += 1; | |
3935 | header_length = strlen (header); | |
3936 | payload_size -= header_length; | |
3de11b2e | 3937 | payload_size -= hexnumlen (memaddr); |
c906108c | 3938 | |
a76d924d | 3939 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 3940 | |
a76d924d DJ |
3941 | strcat (rs->buf, header); |
3942 | p = rs->buf + strlen (header); | |
3943 | ||
3944 | /* Compute a best guess of the number of bytes actually transfered. */ | |
3945 | if (packet_format == 'X') | |
c906108c | 3946 | { |
23860348 | 3947 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3948 | todo = min (len, payload_size); |
a76d924d DJ |
3949 | if (use_length) |
3950 | payload_size -= hexnumlen (todo); | |
3de11b2e | 3951 | todo = min (todo, payload_size); |
a76d924d DJ |
3952 | } |
3953 | else | |
3954 | { | |
23860348 | 3955 | /* Num bytes that will fit. */ |
a257b5bb | 3956 | todo = min (len, payload_size / 2); |
a76d924d DJ |
3957 | if (use_length) |
3958 | payload_size -= hexnumlen (todo); | |
3de11b2e | 3959 | todo = min (todo, payload_size / 2); |
917317f4 | 3960 | } |
a76d924d | 3961 | |
3de11b2e NS |
3962 | if (todo <= 0) |
3963 | internal_error (__FILE__, __LINE__, | |
3964 | _("minumum packet size too small to write data")); | |
802188a7 | 3965 | |
6765f3e5 DJ |
3966 | /* If we already need another packet, then try to align the end |
3967 | of this packet to a useful boundary. */ | |
3968 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
3969 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
3970 | ||
a257b5bb | 3971 | /* Append "<memaddr>". */ |
917317f4 JM |
3972 | memaddr = remote_address_masked (memaddr); |
3973 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 3974 | |
a76d924d DJ |
3975 | if (use_length) |
3976 | { | |
3977 | /* Append ",". */ | |
3978 | *p++ = ','; | |
802188a7 | 3979 | |
a76d924d DJ |
3980 | /* Append <len>. Retain the location/size of <len>. It may need to |
3981 | be adjusted once the packet body has been created. */ | |
3982 | plen = p; | |
3983 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3984 | p += plenlen; | |
3985 | } | |
a257b5bb AC |
3986 | |
3987 | /* Append ":". */ | |
917317f4 JM |
3988 | *p++ = ':'; |
3989 | *p = '\0'; | |
802188a7 | 3990 | |
a257b5bb | 3991 | /* Append the packet body. */ |
a76d924d | 3992 | if (packet_format == 'X') |
917317f4 | 3993 | { |
917317f4 JM |
3994 | /* Binary mode. Send target system values byte by byte, in |
3995 | increasing byte addresses. Only escape certain critical | |
3996 | characters. */ | |
6765f3e5 DJ |
3997 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
3998 | payload_size); | |
3999 | ||
4000 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
4001 | a second try to keep the end of the packet aligned. */ | |
4002 | if (nr_bytes < todo) | |
4003 | { | |
4004 | int new_nr_bytes; | |
4005 | ||
4006 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4007 | - memaddr); | |
4008 | if (new_nr_bytes != nr_bytes) | |
4009 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4010 | p, &nr_bytes, | |
4011 | payload_size); | |
4012 | } | |
4013 | ||
4014 | p += payload_length; | |
a76d924d | 4015 | if (use_length && nr_bytes < todo) |
c906108c | 4016 | { |
802188a7 | 4017 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4018 | and we have actually sent fewer bytes than planned. |
4019 | Fix-up the length field of the packet. Use the same | |
4020 | number of characters as before. */ | |
917317f4 JM |
4021 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4022 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4023 | } |
a76d924d DJ |
4024 | } |
4025 | else | |
4026 | { | |
917317f4 JM |
4027 | /* Normal mode: Send target system values byte by byte, in |
4028 | increasing byte addresses. Each byte is encoded as a two hex | |
4029 | value. */ | |
2644f393 | 4030 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4031 | p += 2 * nr_bytes; |
c906108c | 4032 | } |
802188a7 | 4033 | |
2e9f7625 | 4034 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4035 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4036 | |
2e9f7625 | 4037 | if (rs->buf[0] == 'E') |
917317f4 JM |
4038 | { |
4039 | /* There is no correspondance between what the remote protocol | |
4040 | uses for errors and errno codes. We would like a cleaner way | |
4041 | of representing errors (big enough to include errno codes, | |
4042 | bfd_error codes, and others). But for now just return EIO. */ | |
4043 | errno = EIO; | |
4044 | return 0; | |
4045 | } | |
802188a7 | 4046 | |
23860348 MS |
4047 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4048 | fewer bytes than we'd planned. */ | |
917317f4 | 4049 | return nr_bytes; |
c906108c SS |
4050 | } |
4051 | ||
a76d924d DJ |
4052 | /* Write memory data directly to the remote machine. |
4053 | This does not inform the data cache; the data cache uses this. | |
4054 | MEMADDR is the address in the remote memory space. | |
4055 | MYADDR is the address of the buffer in our space. | |
4056 | LEN is the number of bytes. | |
4057 | ||
4058 | Returns number of bytes transferred, or 0 (setting errno) for | |
4059 | error. Only transfer a single packet. */ | |
4060 | ||
4061 | int | |
4062 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4063 | { | |
4064 | char *packet_format = 0; | |
4065 | ||
4066 | /* Check whether the target supports binary download. */ | |
4067 | check_binary_download (memaddr); | |
4068 | ||
4069 | switch (remote_protocol_packets[PACKET_X].support) | |
4070 | { | |
4071 | case PACKET_ENABLE: | |
4072 | packet_format = "X"; | |
4073 | break; | |
4074 | case PACKET_DISABLE: | |
4075 | packet_format = "M"; | |
4076 | break; | |
4077 | case PACKET_SUPPORT_UNKNOWN: | |
4078 | internal_error (__FILE__, __LINE__, | |
4079 | _("remote_write_bytes: bad internal state")); | |
4080 | default: | |
4081 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4082 | } | |
4083 | ||
4084 | return remote_write_bytes_aux (packet_format, | |
4085 | memaddr, myaddr, len, packet_format[0], 1); | |
4086 | } | |
4087 | ||
c906108c SS |
4088 | /* Read memory data directly from the remote machine. |
4089 | This does not use the data cache; the data cache uses this. | |
4090 | MEMADDR is the address in the remote memory space. | |
4091 | MYADDR is the address of the buffer in our space. | |
4092 | LEN is the number of bytes. | |
4093 | ||
4094 | Returns number of bytes transferred, or 0 for error. */ | |
4095 | ||
917317f4 JM |
4096 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4097 | remote targets) shouldn't attempt to read the entire buffer. | |
4098 | Instead it should read a single packet worth of data and then | |
4099 | return the byte size of that packet to the caller. The caller (its | |
4100 | caller and its callers caller ;-) already contains code for | |
23860348 | 4101 | handling partial reads. */ |
917317f4 | 4102 | |
449092f6 | 4103 | int |
cfd77fa1 | 4104 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4105 | { |
6d820c5c | 4106 | struct remote_state *rs = get_remote_state (); |
23860348 | 4107 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4108 | int origlen; |
4109 | ||
b2182ed2 DJ |
4110 | /* Should this be the selected frame? */ |
4111 | gdbarch_remote_translate_xfer_address (current_gdbarch, | |
4112 | current_regcache, | |
4113 | memaddr, len, | |
4114 | &memaddr, &len); | |
4115 | ||
4116 | if (len <= 0) | |
4117 | return 0; | |
4118 | ||
11cf8741 | 4119 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4120 | /* The packet buffer will be large enough for the payload; |
4121 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4122 | |
4123 | origlen = len; | |
4124 | while (len > 0) | |
4125 | { | |
c906108c SS |
4126 | char *p; |
4127 | int todo; | |
4128 | int i; | |
4129 | ||
c5aa993b | 4130 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4131 | |
4132 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4133 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4134 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4135 | p = rs->buf; |
c906108c SS |
4136 | *p++ = 'm'; |
4137 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4138 | *p++ = ','; | |
4139 | p += hexnumstr (p, (ULONGEST) todo); | |
4140 | *p = '\0'; | |
4141 | ||
2e9f7625 | 4142 | putpkt (rs->buf); |
6d820c5c | 4143 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4144 | |
2e9f7625 DJ |
4145 | if (rs->buf[0] == 'E' |
4146 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4147 | && rs->buf[3] == '\0') | |
c906108c | 4148 | { |
23860348 MS |
4149 | /* There is no correspondance between what the remote |
4150 | protocol uses for errors and errno codes. We would like | |
4151 | a cleaner way of representing errors (big enough to | |
4152 | include errno codes, bfd_error codes, and others). But | |
4153 | for now just return EIO. */ | |
c906108c SS |
4154 | errno = EIO; |
4155 | return 0; | |
4156 | } | |
4157 | ||
c5aa993b JM |
4158 | /* Reply describes memory byte by byte, |
4159 | each byte encoded as two hex characters. */ | |
c906108c | 4160 | |
2e9f7625 | 4161 | p = rs->buf; |
30559e10 | 4162 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4163 | { |
30559e10 | 4164 | /* Reply is short. This means that we were able to read |
23860348 | 4165 | only part of what we wanted to. */ |
30559e10 | 4166 | return i + (origlen - len); |
c906108c SS |
4167 | } |
4168 | myaddr += todo; | |
4169 | memaddr += todo; | |
4170 | len -= todo; | |
4171 | } | |
4172 | return origlen; | |
4173 | } | |
4174 | \f | |
4175 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4176 | transferring to or from debugger address BUFFER. Write to inferior |
4177 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4178 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4179 | |
c906108c | 4180 | static int |
961cb7b5 | 4181 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4182 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4183 | struct target_ops *target) |
c906108c | 4184 | { |
4930751a C |
4185 | int res; |
4186 | ||
4930751a | 4187 | if (should_write) |
b2182ed2 | 4188 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4189 | else |
b2182ed2 | 4190 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4191 | |
4192 | return res; | |
c906108c SS |
4193 | } |
4194 | ||
a76d924d DJ |
4195 | /* Sends a packet with content determined by the printf format string |
4196 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4197 | whether the packet was a success, a failure, or unknown. */ | |
4198 | ||
4199 | enum packet_result | |
4200 | remote_send_printf (const char *format, ...) | |
4201 | { | |
4202 | struct remote_state *rs = get_remote_state (); | |
4203 | int max_size = get_remote_packet_size (); | |
4204 | ||
4205 | va_list ap; | |
4206 | va_start (ap, format); | |
4207 | ||
4208 | rs->buf[0] = '\0'; | |
4209 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4210 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4211 | ||
4212 | if (putpkt (rs->buf) < 0) | |
4213 | error (_("Communication problem with target.")); | |
4214 | ||
4215 | rs->buf[0] = '\0'; | |
4216 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4217 | ||
4218 | return packet_check_result (rs->buf); | |
4219 | } | |
4220 | ||
4221 | static void | |
4222 | restore_remote_timeout (void *p) | |
4223 | { | |
4224 | int value = *(int *)p; | |
4225 | remote_timeout = value; | |
4226 | } | |
4227 | ||
4228 | /* Flash writing can take quite some time. We'll set | |
4229 | effectively infinite timeout for flash operations. | |
4230 | In future, we'll need to decide on a better approach. */ | |
4231 | static const int remote_flash_timeout = 1000; | |
4232 | ||
4233 | static void | |
4234 | remote_flash_erase (struct target_ops *ops, | |
4235 | ULONGEST address, LONGEST length) | |
4236 | { | |
4237 | int saved_remote_timeout = remote_timeout; | |
4238 | enum packet_result ret; | |
4239 | ||
4240 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4241 | &saved_remote_timeout); | |
4242 | remote_timeout = remote_flash_timeout; | |
4243 | ||
4244 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4245 | paddr (address), | |
4246 | phex (length, 4)); | |
4247 | switch (ret) | |
4248 | { | |
4249 | case PACKET_UNKNOWN: | |
4250 | error (_("Remote target does not support flash erase")); | |
4251 | case PACKET_ERROR: | |
4252 | error (_("Error erasing flash with vFlashErase packet")); | |
4253 | default: | |
4254 | break; | |
4255 | } | |
4256 | ||
4257 | do_cleanups (back_to); | |
4258 | } | |
4259 | ||
4260 | static LONGEST | |
4261 | remote_flash_write (struct target_ops *ops, | |
4262 | ULONGEST address, LONGEST length, | |
4263 | const gdb_byte *data) | |
4264 | { | |
4265 | int saved_remote_timeout = remote_timeout; | |
4266 | int ret; | |
4267 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4268 | &saved_remote_timeout); | |
4269 | ||
4270 | remote_timeout = remote_flash_timeout; | |
4271 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4272 | do_cleanups (back_to); | |
4273 | ||
4274 | return ret; | |
4275 | } | |
4276 | ||
4277 | static void | |
4278 | remote_flash_done (struct target_ops *ops) | |
4279 | { | |
4280 | int saved_remote_timeout = remote_timeout; | |
4281 | int ret; | |
4282 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4283 | &saved_remote_timeout); | |
4284 | ||
4285 | remote_timeout = remote_flash_timeout; | |
4286 | ret = remote_send_printf ("vFlashDone"); | |
4287 | do_cleanups (back_to); | |
4288 | ||
4289 | switch (ret) | |
4290 | { | |
4291 | case PACKET_UNKNOWN: | |
4292 | error (_("Remote target does not support vFlashDone")); | |
4293 | case PACKET_ERROR: | |
4294 | error (_("Error finishing flash operation")); | |
4295 | default: | |
4296 | break; | |
4297 | } | |
4298 | } | |
4299 | ||
c906108c | 4300 | static void |
fba45db2 | 4301 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4302 | { |
4303 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4304 | } | |
4305 | \f | |
4306 | /* Stuff for dealing with the packets which are part of this protocol. | |
4307 | See comment at top of file for details. */ | |
4308 | ||
0876f84a | 4309 | /* Read a single character from the remote end. */ |
c906108c SS |
4310 | |
4311 | static int | |
fba45db2 | 4312 | readchar (int timeout) |
c906108c SS |
4313 | { |
4314 | int ch; | |
4315 | ||
2cd58942 | 4316 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4317 | |
2acceee2 | 4318 | if (ch >= 0) |
0876f84a | 4319 | return ch; |
2acceee2 JM |
4320 | |
4321 | switch ((enum serial_rc) ch) | |
c906108c SS |
4322 | { |
4323 | case SERIAL_EOF: | |
2acceee2 | 4324 | target_mourn_inferior (); |
8a3fe4f8 | 4325 | error (_("Remote connection closed")); |
2acceee2 | 4326 | /* no return */ |
c906108c | 4327 | case SERIAL_ERROR: |
e2e0b3e5 | 4328 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4329 | /* no return */ |
c906108c | 4330 | case SERIAL_TIMEOUT: |
2acceee2 | 4331 | break; |
c906108c | 4332 | } |
2acceee2 | 4333 | return ch; |
c906108c SS |
4334 | } |
4335 | ||
6d820c5c DJ |
4336 | /* Send the command in *BUF to the remote machine, and read the reply |
4337 | into *BUF. Report an error if we get an error reply. Resize | |
4338 | *BUF using xrealloc if necessary to hold the result, and update | |
4339 | *SIZEOF_BUF. */ | |
c906108c SS |
4340 | |
4341 | static void | |
6d820c5c DJ |
4342 | remote_send (char **buf, |
4343 | long *sizeof_buf) | |
c906108c | 4344 | { |
6d820c5c | 4345 | putpkt (*buf); |
c2d11a7d | 4346 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4347 | |
6d820c5c DJ |
4348 | if ((*buf)[0] == 'E') |
4349 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4350 | } |
4351 | ||
4352 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4353 | string notation. */ | |
4354 | ||
4355 | static void | |
fba45db2 | 4356 | print_packet (char *buf) |
c906108c SS |
4357 | { |
4358 | puts_filtered ("\""); | |
43e526b9 | 4359 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4360 | puts_filtered ("\""); |
4361 | } | |
4362 | ||
4363 | int | |
fba45db2 | 4364 | putpkt (char *buf) |
c906108c SS |
4365 | { |
4366 | return putpkt_binary (buf, strlen (buf)); | |
4367 | } | |
4368 | ||
4369 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4370 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4371 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4372 | and for a possible /0 if we are debugging (remote_debug) and want |
4373 | to print the sent packet as a string. */ | |
c906108c SS |
4374 | |
4375 | static int | |
fba45db2 | 4376 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
4377 | { |
4378 | int i; | |
4379 | unsigned char csum = 0; | |
11cf8741 | 4380 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4381 | |
c906108c SS |
4382 | int ch; |
4383 | int tcount = 0; | |
4384 | char *p; | |
4385 | ||
4386 | /* Copy the packet into buffer BUF2, encapsulating it | |
4387 | and giving it a checksum. */ | |
4388 | ||
c906108c SS |
4389 | p = buf2; |
4390 | *p++ = '$'; | |
4391 | ||
4392 | for (i = 0; i < cnt; i++) | |
4393 | { | |
4394 | csum += buf[i]; | |
4395 | *p++ = buf[i]; | |
4396 | } | |
4397 | *p++ = '#'; | |
4398 | *p++ = tohex ((csum >> 4) & 0xf); | |
4399 | *p++ = tohex (csum & 0xf); | |
4400 | ||
4401 | /* Send it over and over until we get a positive ack. */ | |
4402 | ||
4403 | while (1) | |
4404 | { | |
4405 | int started_error_output = 0; | |
4406 | ||
4407 | if (remote_debug) | |
4408 | { | |
4409 | *p = '\0'; | |
43e526b9 JM |
4410 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4411 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4412 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4413 | gdb_flush (gdb_stdlog); |
c906108c | 4414 | } |
2cd58942 | 4415 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4416 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4417 | |
23860348 | 4418 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4419 | while (1) |
4420 | { | |
4421 | ch = readchar (remote_timeout); | |
4422 | ||
c5aa993b | 4423 | if (remote_debug) |
c906108c SS |
4424 | { |
4425 | switch (ch) | |
4426 | { | |
4427 | case '+': | |
1216fa2c | 4428 | case '-': |
c906108c SS |
4429 | case SERIAL_TIMEOUT: |
4430 | case '$': | |
4431 | if (started_error_output) | |
4432 | { | |
4433 | putchar_unfiltered ('\n'); | |
4434 | started_error_output = 0; | |
4435 | } | |
4436 | } | |
4437 | } | |
4438 | ||
4439 | switch (ch) | |
4440 | { | |
4441 | case '+': | |
4442 | if (remote_debug) | |
0f71a2f6 | 4443 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4444 | return 1; |
1216fa2c AC |
4445 | case '-': |
4446 | if (remote_debug) | |
4447 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4448 | case SERIAL_TIMEOUT: |
c5aa993b | 4449 | tcount++; |
c906108c SS |
4450 | if (tcount > 3) |
4451 | return 0; | |
23860348 | 4452 | break; /* Retransmit buffer. */ |
c906108c SS |
4453 | case '$': |
4454 | { | |
40e3f985 | 4455 | if (remote_debug) |
2bc416ba | 4456 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4457 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4458 | /* It's probably an old response sent because an ACK |
4459 | was lost. Gobble up the packet and ack it so it | |
4460 | doesn't get retransmitted when we resend this | |
4461 | packet. */ | |
6d820c5c | 4462 | skip_frame (); |
d6f7abdf | 4463 | serial_write (remote_desc, "+", 1); |
23860348 | 4464 | continue; /* Now, go look for +. */ |
c906108c SS |
4465 | } |
4466 | default: | |
4467 | if (remote_debug) | |
4468 | { | |
4469 | if (!started_error_output) | |
4470 | { | |
4471 | started_error_output = 1; | |
0f71a2f6 | 4472 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4473 | } |
0f71a2f6 | 4474 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4475 | } |
4476 | continue; | |
4477 | } | |
23860348 | 4478 | break; /* Here to retransmit. */ |
c906108c SS |
4479 | } |
4480 | ||
4481 | #if 0 | |
4482 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4483 | able to get out next time we call QUIT, without anything as |
4484 | violent as interrupt_query. If we want to provide a way out of | |
4485 | here without getting to the next QUIT, it should be based on | |
4486 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4487 | if (quit_flag) |
4488 | { | |
4489 | quit_flag = 0; | |
4490 | interrupt_query (); | |
4491 | } | |
4492 | #endif | |
4493 | } | |
4494 | } | |
4495 | ||
6d820c5c DJ |
4496 | /* Come here after finding the start of a frame when we expected an |
4497 | ack. Do our best to discard the rest of this packet. */ | |
4498 | ||
4499 | static void | |
4500 | skip_frame (void) | |
4501 | { | |
4502 | int c; | |
4503 | ||
4504 | while (1) | |
4505 | { | |
4506 | c = readchar (remote_timeout); | |
4507 | switch (c) | |
4508 | { | |
4509 | case SERIAL_TIMEOUT: | |
4510 | /* Nothing we can do. */ | |
4511 | return; | |
4512 | case '#': | |
4513 | /* Discard the two bytes of checksum and stop. */ | |
4514 | c = readchar (remote_timeout); | |
4515 | if (c >= 0) | |
4516 | c = readchar (remote_timeout); | |
4517 | ||
4518 | return; | |
4519 | case '*': /* Run length encoding. */ | |
4520 | /* Discard the repeat count. */ | |
4521 | c = readchar (remote_timeout); | |
4522 | if (c < 0) | |
4523 | return; | |
4524 | break; | |
4525 | default: | |
4526 | /* A regular character. */ | |
4527 | break; | |
4528 | } | |
4529 | } | |
4530 | } | |
4531 | ||
c906108c | 4532 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4533 | into *BUF, verifying the checksum, length, and handling run-length |
4534 | compression. NUL terminate the buffer. If there is not enough room, | |
4535 | expand *BUF using xrealloc. | |
c906108c | 4536 | |
c2d11a7d JM |
4537 | Returns -1 on error, number of characters in buffer (ignoring the |
4538 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4539 | SERIAL status indications). */ |
c2d11a7d JM |
4540 | |
4541 | static long | |
6d820c5c DJ |
4542 | read_frame (char **buf_p, |
4543 | long *sizeof_buf) | |
c906108c SS |
4544 | { |
4545 | unsigned char csum; | |
c2d11a7d | 4546 | long bc; |
c906108c | 4547 | int c; |
6d820c5c | 4548 | char *buf = *buf_p; |
c906108c SS |
4549 | |
4550 | csum = 0; | |
c2d11a7d | 4551 | bc = 0; |
c906108c SS |
4552 | |
4553 | while (1) | |
4554 | { | |
4555 | c = readchar (remote_timeout); | |
c906108c SS |
4556 | switch (c) |
4557 | { | |
4558 | case SERIAL_TIMEOUT: | |
4559 | if (remote_debug) | |
0f71a2f6 | 4560 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4561 | return -1; |
c906108c SS |
4562 | case '$': |
4563 | if (remote_debug) | |
0f71a2f6 JM |
4564 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4565 | gdb_stdlog); | |
23860348 | 4566 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4567 | case '#': |
4568 | { | |
4569 | unsigned char pktcsum; | |
e1b09194 AC |
4570 | int check_0 = 0; |
4571 | int check_1 = 0; | |
c906108c | 4572 | |
c2d11a7d | 4573 | buf[bc] = '\0'; |
c906108c | 4574 | |
e1b09194 AC |
4575 | check_0 = readchar (remote_timeout); |
4576 | if (check_0 >= 0) | |
4577 | check_1 = readchar (remote_timeout); | |
802188a7 | 4578 | |
e1b09194 AC |
4579 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4580 | { | |
4581 | if (remote_debug) | |
2bc416ba | 4582 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 4583 | gdb_stdlog); |
e1b09194 AC |
4584 | return -1; |
4585 | } | |
4586 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4587 | { |
4588 | if (remote_debug) | |
2bc416ba | 4589 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 4590 | gdb_stdlog); |
40e3f985 FN |
4591 | return -1; |
4592 | } | |
c906108c | 4593 | |
e1b09194 | 4594 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4595 | if (csum == pktcsum) |
c2d11a7d | 4596 | return bc; |
c906108c | 4597 | |
c5aa993b | 4598 | if (remote_debug) |
c906108c | 4599 | { |
0f71a2f6 | 4600 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4601 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 4602 | pktcsum, csum); |
0876f84a | 4603 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 4604 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 4605 | } |
c2d11a7d | 4606 | /* Number of characters in buffer ignoring trailing |
23860348 | 4607 | NULL. */ |
c2d11a7d | 4608 | return -1; |
c906108c | 4609 | } |
23860348 | 4610 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4611 | { |
4612 | int repeat; | |
4613 | csum += c; | |
c906108c | 4614 | |
b4501125 AC |
4615 | c = readchar (remote_timeout); |
4616 | csum += c; | |
23860348 | 4617 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4618 | |
23860348 | 4619 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4620 | |
6d820c5c | 4621 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4622 | { |
6d820c5c DJ |
4623 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4624 | { | |
4625 | /* Make some more room in the buffer. */ | |
4626 | *sizeof_buf += repeat; | |
4627 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4628 | buf = *buf_p; | |
4629 | } | |
4630 | ||
c2d11a7d JM |
4631 | memset (&buf[bc], buf[bc - 1], repeat); |
4632 | bc += repeat; | |
c2c6d25f JM |
4633 | continue; |
4634 | } | |
4635 | ||
c2d11a7d | 4636 | buf[bc] = '\0'; |
6d820c5c | 4637 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4638 | return -1; |
c2c6d25f | 4639 | } |
c906108c | 4640 | default: |
6d820c5c | 4641 | if (bc >= *sizeof_buf - 1) |
c906108c | 4642 | { |
6d820c5c DJ |
4643 | /* Make some more room in the buffer. */ |
4644 | *sizeof_buf *= 2; | |
4645 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4646 | buf = *buf_p; | |
c906108c SS |
4647 | } |
4648 | ||
6d820c5c DJ |
4649 | buf[bc++] = c; |
4650 | csum += c; | |
4651 | continue; | |
c906108c SS |
4652 | } |
4653 | } | |
4654 | } | |
4655 | ||
4656 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4657 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4658 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4659 | rather than timing out; this is used (in synchronous mode) to wait | |
4660 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4661 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4662 | don't have to change all the calls to getpkt to deal with the | |
4663 | return value, because at the moment I don't know what the right | |
23860348 | 4664 | thing to do it for those. */ |
c906108c | 4665 | void |
6d820c5c DJ |
4666 | getpkt (char **buf, |
4667 | long *sizeof_buf, | |
c2d11a7d | 4668 | int forever) |
d9fcf2fb JM |
4669 | { |
4670 | int timed_out; | |
4671 | ||
4672 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4673 | } | |
4674 | ||
4675 | ||
4676 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4677 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4678 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4679 | rather than timing out; this is used (in synchronous mode) to wait | |
4680 | for a target that is is executing user code to stop. If FOREVER == | |
4681 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
4682 | indication of this to the caller. Otherwise return the number |
4683 | of bytes read. */ | |
3172dc30 | 4684 | static int |
6d820c5c | 4685 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4686 | { |
4687 | int c; | |
4688 | int tries; | |
4689 | int timeout; | |
4690 | int val; | |
4691 | ||
6d820c5c | 4692 | strcpy (*buf, "timeout"); |
c906108c SS |
4693 | |
4694 | if (forever) | |
4695 | { | |
c906108c | 4696 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4697 | } |
4698 | ||
4699 | else | |
4700 | timeout = remote_timeout; | |
4701 | ||
4702 | #define MAX_TRIES 3 | |
4703 | ||
4704 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4705 | { | |
4706 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4707 | continuously, but if it pauses, we'll get a zero from |
4708 | readchar because of timeout. Then we'll count that as a | |
4709 | retry. */ | |
c906108c | 4710 | |
23860348 MS |
4711 | /* Note that we will only wait forever prior to the start of a |
4712 | packet. After that, we expect characters to arrive at a | |
4713 | brisk pace. They should show up within remote_timeout | |
4714 | intervals. */ | |
c906108c SS |
4715 | |
4716 | do | |
4717 | { | |
4718 | c = readchar (timeout); | |
4719 | ||
4720 | if (c == SERIAL_TIMEOUT) | |
4721 | { | |
23860348 | 4722 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4723 | { |
2acceee2 | 4724 | QUIT; |
c906108c | 4725 | target_mourn_inferior (); |
8a3fe4f8 | 4726 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4727 | } |
c906108c | 4728 | if (remote_debug) |
0f71a2f6 | 4729 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4730 | goto retry; |
4731 | } | |
4732 | } | |
4733 | while (c != '$'); | |
4734 | ||
4735 | /* We've found the start of a packet, now collect the data. */ | |
4736 | ||
c2d11a7d | 4737 | val = read_frame (buf, sizeof_buf); |
c906108c | 4738 | |
c2d11a7d | 4739 | if (val >= 0) |
c906108c SS |
4740 | { |
4741 | if (remote_debug) | |
43e526b9 JM |
4742 | { |
4743 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 4744 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
4745 | fprintf_unfiltered (gdb_stdlog, "\n"); |
4746 | } | |
2cd58942 | 4747 | serial_write (remote_desc, "+", 1); |
0876f84a | 4748 | return val; |
c906108c SS |
4749 | } |
4750 | ||
4751 | /* Try the whole thing again. */ | |
4752 | retry: | |
2cd58942 | 4753 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4754 | } |
4755 | ||
2bc416ba | 4756 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 4757 | Give up. */ |
c906108c | 4758 | |
a3f17187 | 4759 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4760 | serial_write (remote_desc, "+", 1); |
0876f84a | 4761 | return -1; |
c906108c SS |
4762 | } |
4763 | \f | |
4764 | static void | |
fba45db2 | 4765 | remote_kill (void) |
c906108c SS |
4766 | { |
4767 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4768 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4769 | if (kill_kludge) | |
4770 | { | |
4771 | kill_kludge = 0; | |
4772 | target_mourn_inferior (); | |
4773 | return; | |
4774 | } | |
4775 | ||
4776 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4777 | speaking terms with the remote system. */ | |
c5aa993b | 4778 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4779 | |
4780 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4781 | we do or not. For the existing stubs, kill is a noop. */ | |
4782 | target_mourn_inferior (); | |
4783 | } | |
4784 | ||
23860348 | 4785 | /* Async version of remote_kill. */ |
43ff13b4 | 4786 | static void |
fba45db2 | 4787 | remote_async_kill (void) |
43ff13b4 | 4788 | { |
23860348 | 4789 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4790 | if (target_is_async_p ()) |
2cd58942 | 4791 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4792 | |
4793 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4794 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4795 | if (kill_kludge) | |
4796 | { | |
4797 | kill_kludge = 0; | |
4798 | target_mourn_inferior (); | |
4799 | return; | |
4800 | } | |
4801 | ||
23860348 MS |
4802 | /* Use catch_errors so the user can quit from gdb even when we |
4803 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4804 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4805 | |
4806 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4807 | we do or not. For the existing stubs, kill is a noop. */ | |
4808 | target_mourn_inferior (); | |
4809 | } | |
4810 | ||
c906108c | 4811 | static void |
fba45db2 | 4812 | remote_mourn (void) |
c906108c SS |
4813 | { |
4814 | remote_mourn_1 (&remote_ops); | |
4815 | } | |
4816 | ||
53a5351d | 4817 | static void |
fba45db2 | 4818 | remote_async_mourn (void) |
53a5351d JM |
4819 | { |
4820 | remote_mourn_1 (&remote_async_ops); | |
4821 | } | |
4822 | ||
c906108c | 4823 | static void |
fba45db2 | 4824 | extended_remote_mourn (void) |
c906108c SS |
4825 | { |
4826 | /* We do _not_ want to mourn the target like this; this will | |
4827 | remove the extended remote target from the target stack, | |
802188a7 | 4828 | and the next time the user says "run" it'll fail. |
c906108c SS |
4829 | |
4830 | FIXME: What is the right thing to do here? */ | |
4831 | #if 0 | |
4832 | remote_mourn_1 (&extended_remote_ops); | |
4833 | #endif | |
4834 | } | |
4835 | ||
4836 | /* Worker function for remote_mourn. */ | |
4837 | static void | |
fba45db2 | 4838 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4839 | { |
4840 | unpush_target (target); | |
4841 | generic_mourn_inferior (); | |
4842 | } | |
4843 | ||
4844 | /* In the extended protocol we want to be able to do things like | |
4845 | "run" and have them basically work as expected. So we need | |
802188a7 | 4846 | a special create_inferior function. |
c906108c SS |
4847 | |
4848 | FIXME: One day add support for changing the exec file | |
4849 | we're debugging, arguments and an environment. */ | |
4850 | ||
4851 | static void | |
23860348 MS |
4852 | extended_remote_create_inferior (char *exec_file, char *args, |
4853 | char **env, int from_tty) | |
c906108c SS |
4854 | { |
4855 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4856 | the remote server. */ | |
4857 | remove_breakpoints (); | |
4858 | ||
4859 | /* Now restart the remote server. */ | |
4860 | extended_remote_restart (); | |
4861 | ||
4862 | /* Now put the breakpoints back in. This way we're safe if the | |
4863 | restart function works via a unix fork on the remote side. */ | |
4864 | insert_breakpoints (); | |
4865 | ||
4866 | /* Clean up from the last time we were running. */ | |
4867 | clear_proceed_status (); | |
c906108c SS |
4868 | } |
4869 | ||
23860348 | 4870 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4871 | static void |
23860348 MS |
4872 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4873 | char **env, int from_tty) | |
43ff13b4 JM |
4874 | { |
4875 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4876 | the remote server. */ | |
4877 | remove_breakpoints (); | |
4878 | ||
4879 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4880 | with the event loop. */ |
362646f5 | 4881 | if (target_can_async_p ()) |
2acceee2 | 4882 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4883 | |
4884 | /* Now restart the remote server. */ | |
4885 | extended_remote_restart (); | |
4886 | ||
4887 | /* Now put the breakpoints back in. This way we're safe if the | |
4888 | restart function works via a unix fork on the remote side. */ | |
4889 | insert_breakpoints (); | |
4890 | ||
4891 | /* Clean up from the last time we were running. */ | |
4892 | clear_proceed_status (); | |
43ff13b4 | 4893 | } |
c906108c | 4894 | \f |
c5aa993b | 4895 | |
aaab4dba | 4896 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4897 | instruction than other targets; in those use |
4898 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4899 | Also, bi-endian targets may define | |
4900 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4901 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4902 | just call the standard routines that are in mem-break.c. */ | |
4903 | ||
4904 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4905 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4906 | the ARCH-OS-tdep.c code can override the default. */ | |
4907 | ||
4908 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4909 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4910 | #endif |
4911 | ||
7fec2c59 | 4912 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4913 | |
4914 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4915 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4916 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4917 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4918 | #endif |
4919 | ||
7fec2c59 AC |
4920 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4921 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4922 | |
7fec2c59 | 4923 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4924 | |
8181d85f DJ |
4925 | /* Insert a breakpoint. On targets that have software breakpoint |
4926 | support, we ask the remote target to do the work; on targets | |
4927 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
4928 | |
4929 | static int | |
8181d85f | 4930 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4931 | { |
8181d85f | 4932 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4933 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4934 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4935 | int val; |
802188a7 | 4936 | #endif |
96baa820 | 4937 | |
d471ea57 AC |
4938 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4939 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4940 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4941 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4942 | |
444abaca | 4943 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4944 | { |
6d820c5c | 4945 | char *p = rs->buf; |
802188a7 | 4946 | |
96baa820 JM |
4947 | *(p++) = 'Z'; |
4948 | *(p++) = '0'; | |
4949 | *(p++) = ','; | |
8181d85f DJ |
4950 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
4951 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); | |
4952 | p += hexnumstr (p, addr); | |
4953 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 4954 | |
6d820c5c DJ |
4955 | putpkt (rs->buf); |
4956 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4957 | |
6d820c5c | 4958 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 4959 | { |
d471ea57 AC |
4960 | case PACKET_ERROR: |
4961 | return -1; | |
4962 | case PACKET_OK: | |
4963 | return 0; | |
4964 | case PACKET_UNKNOWN: | |
4965 | break; | |
96baa820 JM |
4966 | } |
4967 | } | |
c906108c | 4968 | |
802188a7 | 4969 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
4970 | bp_tgt->placed_size = bp_tgt->shadow_len = sizeof big_break_insn; |
4971 | val = target_read_memory (addr, bp_tgt->shadow_contents, bp_tgt->shadow_len); | |
c906108c SS |
4972 | |
4973 | if (val == 0) | |
4974 | { | |
d7449b42 | 4975 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4976 | val = target_write_memory (addr, (char *) big_break_insn, |
4977 | sizeof big_break_insn); | |
4978 | else | |
4979 | val = target_write_memory (addr, (char *) little_break_insn, | |
4980 | sizeof little_break_insn); | |
4981 | } | |
4982 | ||
4983 | return val; | |
4984 | #else | |
8181d85f | 4985 | return memory_insert_breakpoint (bp_tgt); |
7fec2c59 | 4986 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4987 | } |
4988 | ||
4989 | static int | |
8181d85f | 4990 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4991 | { |
8181d85f | 4992 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4993 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4994 | int bp_size; |
4995 | ||
444abaca | 4996 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4997 | { |
6d820c5c | 4998 | char *p = rs->buf; |
802188a7 | 4999 | |
96baa820 JM |
5000 | *(p++) = 'z'; |
5001 | *(p++) = '0'; | |
5002 | *(p++) = ','; | |
5003 | ||
8181d85f DJ |
5004 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5005 | p += hexnumstr (p, addr); | |
5006 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5007 | |
6d820c5c DJ |
5008 | putpkt (rs->buf); |
5009 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5010 | |
6d820c5c | 5011 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5012 | } |
5013 | ||
7fec2c59 | 5014 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
5015 | return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents, |
5016 | bp_tgt->shadow_len); | |
c906108c | 5017 | #else |
8181d85f | 5018 | return memory_remove_breakpoint (bp_tgt); |
7fec2c59 | 5019 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
5020 | } |
5021 | ||
d471ea57 AC |
5022 | static int |
5023 | watchpoint_to_Z_packet (int type) | |
5024 | { | |
5025 | switch (type) | |
5026 | { | |
5027 | case hw_write: | |
bb858e6a | 5028 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5029 | break; |
5030 | case hw_read: | |
bb858e6a | 5031 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5032 | break; |
5033 | case hw_access: | |
bb858e6a | 5034 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5035 | break; |
5036 | default: | |
8e65ff28 | 5037 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5038 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5039 | } |
5040 | } | |
5041 | ||
3c3bea1c | 5042 | static int |
fba45db2 | 5043 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5044 | { |
d01949b6 | 5045 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5046 | char *p; |
d471ea57 | 5047 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5048 | |
444abaca | 5049 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5050 | return -1; |
802188a7 | 5051 | |
6d820c5c DJ |
5052 | sprintf (rs->buf, "Z%x,", packet); |
5053 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5054 | addr = remote_address_masked (addr); |
5055 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5056 | sprintf (p, ",%x", len); |
802188a7 | 5057 | |
6d820c5c DJ |
5058 | putpkt (rs->buf); |
5059 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5060 | |
6d820c5c | 5061 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5062 | { |
5063 | case PACKET_ERROR: | |
5064 | case PACKET_UNKNOWN: | |
5065 | return -1; | |
5066 | case PACKET_OK: | |
5067 | return 0; | |
5068 | } | |
8e65ff28 | 5069 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5070 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5071 | } |
5072 | ||
d471ea57 | 5073 | |
3c3bea1c | 5074 | static int |
fba45db2 | 5075 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5076 | { |
d01949b6 | 5077 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5078 | char *p; |
d471ea57 AC |
5079 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5080 | ||
444abaca | 5081 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5082 | return -1; |
802188a7 | 5083 | |
6d820c5c DJ |
5084 | sprintf (rs->buf, "z%x,", packet); |
5085 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5086 | addr = remote_address_masked (addr); |
5087 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5088 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5089 | putpkt (rs->buf); |
5090 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5091 | |
6d820c5c | 5092 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5093 | { |
5094 | case PACKET_ERROR: | |
5095 | case PACKET_UNKNOWN: | |
5096 | return -1; | |
5097 | case PACKET_OK: | |
5098 | return 0; | |
5099 | } | |
8e65ff28 | 5100 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5101 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5102 | } |
5103 | ||
3c3bea1c | 5104 | |
501eef12 AC |
5105 | int remote_hw_watchpoint_limit = -1; |
5106 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5107 | |
b9362cc7 | 5108 | static int |
3c3bea1c | 5109 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5110 | { |
3c3bea1c GS |
5111 | if (type == bp_hardware_breakpoint) |
5112 | { | |
5113 | if (remote_hw_breakpoint_limit == 0) | |
5114 | return 0; | |
501eef12 AC |
5115 | else if (remote_hw_breakpoint_limit < 0) |
5116 | return 1; | |
3c3bea1c GS |
5117 | else if (cnt <= remote_hw_breakpoint_limit) |
5118 | return 1; | |
5119 | } | |
5120 | else | |
5121 | { | |
5122 | if (remote_hw_watchpoint_limit == 0) | |
5123 | return 0; | |
501eef12 AC |
5124 | else if (remote_hw_watchpoint_limit < 0) |
5125 | return 1; | |
3c3bea1c GS |
5126 | else if (ot) |
5127 | return -1; | |
5128 | else if (cnt <= remote_hw_watchpoint_limit) | |
5129 | return 1; | |
5130 | } | |
5131 | return -1; | |
5132 | } | |
5133 | ||
b9362cc7 | 5134 | static int |
3c3bea1c GS |
5135 | remote_stopped_by_watchpoint (void) |
5136 | { | |
5137 | return remote_stopped_by_watchpoint_p; | |
5138 | } | |
5139 | ||
7270d8f2 OF |
5140 | extern int stepped_after_stopped_by_watchpoint; |
5141 | ||
4aa7a7f5 JJ |
5142 | static int |
5143 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5144 | { |
4aa7a7f5 | 5145 | int rc = 0; |
7270d8f2 OF |
5146 | if (remote_stopped_by_watchpoint () |
5147 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
5148 | { |
5149 | *addr_p = remote_watch_data_address; | |
5150 | rc = 1; | |
5151 | } | |
5152 | ||
5153 | return rc; | |
3c3bea1c GS |
5154 | } |
5155 | ||
5156 | ||
5157 | static int | |
8181d85f | 5158 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5159 | { |
8181d85f | 5160 | CORE_ADDR addr; |
d01949b6 | 5161 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5162 | char *p = rs->buf; |
802188a7 | 5163 | |
c8189ed1 | 5164 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5165 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5166 | |
8181d85f | 5167 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 5168 | |
444abaca | 5169 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5170 | return -1; |
2bc416ba | 5171 | |
96baa820 JM |
5172 | *(p++) = 'Z'; |
5173 | *(p++) = '1'; | |
5174 | *(p++) = ','; | |
802188a7 | 5175 | |
8181d85f | 5176 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5177 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5178 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5179 | |
6d820c5c DJ |
5180 | putpkt (rs->buf); |
5181 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5182 | |
6d820c5c | 5183 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5184 | { |
5185 | case PACKET_ERROR: | |
5186 | case PACKET_UNKNOWN: | |
5187 | return -1; | |
5188 | case PACKET_OK: | |
5189 | return 0; | |
5190 | } | |
8e65ff28 | 5191 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5192 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5193 | } |
5194 | ||
d471ea57 | 5195 | |
802188a7 | 5196 | static int |
8181d85f | 5197 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5198 | { |
8181d85f | 5199 | CORE_ADDR addr; |
d01949b6 | 5200 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5201 | char *p = rs->buf; |
c8189ed1 | 5202 | |
444abaca | 5203 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5204 | return -1; |
802188a7 | 5205 | |
96baa820 JM |
5206 | *(p++) = 'z'; |
5207 | *(p++) = '1'; | |
5208 | *(p++) = ','; | |
802188a7 | 5209 | |
8181d85f | 5210 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5211 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5212 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5213 | |
6d820c5c DJ |
5214 | putpkt (rs->buf); |
5215 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5216 | |
6d820c5c | 5217 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5218 | { |
5219 | case PACKET_ERROR: | |
5220 | case PACKET_UNKNOWN: | |
5221 | return -1; | |
5222 | case PACKET_OK: | |
5223 | return 0; | |
5224 | } | |
8e65ff28 | 5225 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5226 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5227 | } |
96baa820 | 5228 | |
c906108c SS |
5229 | /* Some targets are only capable of doing downloads, and afterwards |
5230 | they switch to the remote serial protocol. This function provides | |
5231 | a clean way to get from the download target to the remote target. | |
5232 | It's basically just a wrapper so that we don't have to expose any | |
5233 | of the internal workings of remote.c. | |
5234 | ||
5235 | Prior to calling this routine, you should shutdown the current | |
5236 | target code, else you will get the "A program is being debugged | |
5237 | already..." message. Usually a call to pop_target() suffices. */ | |
5238 | ||
5239 | void | |
fba45db2 | 5240 | push_remote_target (char *name, int from_tty) |
c906108c | 5241 | { |
a3f17187 | 5242 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5243 | remote_open (name, from_tty); |
5244 | } | |
5245 | ||
23860348 | 5246 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5247 | |
c5aa993b JM |
5248 | static unsigned long crc32_table[256] = |
5249 | {0, 0}; | |
c906108c SS |
5250 | |
5251 | static unsigned long | |
fba45db2 | 5252 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5253 | { |
c5aa993b | 5254 | if (!crc32_table[1]) |
c906108c | 5255 | { |
23860348 | 5256 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5257 | int i, j; |
5258 | unsigned int c; | |
5259 | ||
5260 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5261 | { |
5262 | for (c = i << 24, j = 8; j > 0; --j) | |
5263 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5264 | crc32_table[i] = c; | |
5265 | } | |
c906108c SS |
5266 | } |
5267 | ||
5268 | while (len--) | |
5269 | { | |
5270 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5271 | buf++; | |
5272 | } | |
5273 | return crc; | |
5274 | } | |
5275 | ||
5276 | /* compare-sections command | |
5277 | ||
5278 | With no arguments, compares each loadable section in the exec bfd | |
5279 | with the same memory range on the target, and reports mismatches. | |
5280 | Useful for verifying the image on the target against the exec file. | |
5281 | Depends on the target understanding the new "qCRC:" request. */ | |
5282 | ||
e514a9d6 JM |
5283 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5284 | target method (target verify memory) and generic version of the | |
5285 | actual command. This will allow other high-level code (especially | |
23860348 | 5286 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5287 | |
c906108c | 5288 | static void |
fba45db2 | 5289 | compare_sections_command (char *args, int from_tty) |
c906108c | 5290 | { |
d01949b6 | 5291 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5292 | asection *s; |
5293 | unsigned long host_crc, target_crc; | |
5294 | extern bfd *exec_bfd; | |
5295 | struct cleanup *old_chain; | |
085dd6e6 JM |
5296 | char *tmp; |
5297 | char *sectdata; | |
ce359b09 | 5298 | const char *sectname; |
c906108c SS |
5299 | bfd_size_type size; |
5300 | bfd_vma lma; | |
5301 | int matched = 0; | |
5302 | int mismatched = 0; | |
5303 | ||
5304 | if (!exec_bfd) | |
8a3fe4f8 | 5305 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5306 | if (!current_target.to_shortname || |
5307 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5308 | error (_("command can only be used with remote target")); |
c906108c | 5309 | |
c5aa993b | 5310 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5311 | { |
5312 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5313 | continue; /* skip non-loadable section */ |
c906108c | 5314 | |
2c500098 | 5315 | size = bfd_get_section_size (s); |
c906108c | 5316 | if (size == 0) |
c5aa993b | 5317 | continue; /* skip zero-length section */ |
c906108c | 5318 | |
ce359b09 | 5319 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5320 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5321 | continue; /* not the section selected by user */ |
c906108c | 5322 | |
c5aa993b | 5323 | matched = 1; /* do this section */ |
c906108c | 5324 | lma = s->lma; |
23860348 | 5325 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5326 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5327 | (long) lma, (long) size); |
6d820c5c | 5328 | putpkt (rs->buf); |
c906108c | 5329 | |
23860348 MS |
5330 | /* Be clever; compute the host_crc before waiting for target |
5331 | reply. */ | |
c906108c | 5332 | sectdata = xmalloc (size); |
b8c9b27d | 5333 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5334 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5335 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5336 | ||
6d820c5c DJ |
5337 | getpkt (&rs->buf, &rs->buf_size, 0); |
5338 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5339 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5340 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5341 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5342 | error (_("remote target does not support this operation")); |
c906108c | 5343 | |
6d820c5c | 5344 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5345 | target_crc = target_crc * 16 + fromhex (*tmp); |
5346 | ||
d4f3574e SS |
5347 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5348 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5349 | if (host_crc == target_crc) |
5350 | printf_filtered ("matched.\n"); | |
5351 | else | |
c5aa993b JM |
5352 | { |
5353 | printf_filtered ("MIS-MATCHED!\n"); | |
5354 | mismatched++; | |
5355 | } | |
c906108c SS |
5356 | |
5357 | do_cleanups (old_chain); | |
5358 | } | |
5359 | if (mismatched > 0) | |
8a3fe4f8 AC |
5360 | warning (_("One or more sections of the remote executable does not match\n\ |
5361 | the loaded file\n")); | |
c906108c | 5362 | if (args && !matched) |
a3f17187 | 5363 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5364 | } |
5365 | ||
0876f84a DJ |
5366 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5367 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5368 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5369 | The number of bytes read may be less than LEN without indicating an | |
5370 | EOF. PACKET is checked and updated to indicate whether the remote | |
5371 | target supports this object. */ | |
5372 | ||
5373 | static LONGEST | |
5374 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5375 | const char *annex, | |
5376 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5377 | struct packet_config *packet) | |
5378 | { | |
5379 | static char *finished_object; | |
5380 | static char *finished_annex; | |
5381 | static ULONGEST finished_offset; | |
5382 | ||
5383 | struct remote_state *rs = get_remote_state (); | |
5384 | unsigned int total = 0; | |
5385 | LONGEST i, n, packet_len; | |
5386 | ||
5387 | if (packet->support == PACKET_DISABLE) | |
5388 | return -1; | |
5389 | ||
5390 | /* Check whether we've cached an end-of-object packet that matches | |
5391 | this request. */ | |
5392 | if (finished_object) | |
5393 | { | |
5394 | if (strcmp (object_name, finished_object) == 0 | |
5395 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
5396 | && offset == finished_offset) | |
5397 | return 0; | |
5398 | ||
5399 | /* Otherwise, we're now reading something different. Discard | |
5400 | the cache. */ | |
5401 | xfree (finished_object); | |
5402 | xfree (finished_annex); | |
5403 | finished_object = NULL; | |
5404 | finished_annex = NULL; | |
5405 | } | |
5406 | ||
5407 | /* Request only enough to fit in a single packet. The actual data | |
5408 | may not, since we don't know how much of it will need to be escaped; | |
5409 | the target is free to respond with slightly less data. We subtract | |
5410 | five to account for the response type and the protocol frame. */ | |
5411 | n = min (get_remote_packet_size () - 5, len); | |
5412 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
5413 | object_name, annex ? annex : "", | |
5414 | phex_nz (offset, sizeof offset), | |
5415 | phex_nz (n, sizeof n)); | |
5416 | i = putpkt (rs->buf); | |
5417 | if (i < 0) | |
5418 | return -1; | |
5419 | ||
5420 | rs->buf[0] = '\0'; | |
5421 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
5422 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
5423 | return -1; | |
5424 | ||
5425 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
5426 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
5427 | ||
5428 | /* 'm' means there is (or at least might be) more data after this | |
5429 | batch. That does not make sense unless there's at least one byte | |
5430 | of data in this reply. */ | |
5431 | if (rs->buf[0] == 'm' && packet_len == 1) | |
5432 | error (_("Remote qXfer reply contained no data.")); | |
5433 | ||
5434 | /* Got some data. */ | |
5435 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
5436 | ||
5437 | /* 'l' is an EOF marker, possibly including a final block of data, | |
5438 | or possibly empty. Record it to bypass the next read, if one is | |
5439 | issued. */ | |
5440 | if (rs->buf[0] == 'l') | |
5441 | { | |
5442 | finished_object = xstrdup (object_name); | |
5443 | finished_annex = xstrdup (annex ? annex : ""); | |
5444 | finished_offset = offset + i; | |
5445 | } | |
5446 | ||
5447 | return i; | |
5448 | } | |
5449 | ||
1e3ff5ad | 5450 | static LONGEST |
4b8a223f | 5451 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
5452 | const char *annex, gdb_byte *readbuf, |
5453 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 5454 | { |
d01949b6 | 5455 | struct remote_state *rs = get_remote_state (); |
c906108c | 5456 | int i; |
6d820c5c | 5457 | char *p2; |
1e3ff5ad | 5458 | char query_type; |
c906108c | 5459 | |
b2182ed2 | 5460 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
5461 | if (object == TARGET_OBJECT_MEMORY) |
5462 | { | |
5463 | int xfered; | |
5464 | errno = 0; | |
5465 | ||
5466 | if (writebuf != NULL) | |
b2182ed2 | 5467 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 5468 | else |
b2182ed2 | 5469 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
5470 | |
5471 | if (xfered > 0) | |
5472 | return xfered; | |
5473 | else if (xfered == 0 && errno == 0) | |
5474 | return 0; | |
5475 | else | |
5476 | return -1; | |
5477 | } | |
5478 | ||
a76d924d DJ |
5479 | /* Only handle flash writes. */ |
5480 | if (writebuf != NULL) | |
5481 | { | |
5482 | LONGEST xfered; | |
5483 | ||
5484 | switch (object) | |
5485 | { | |
5486 | case TARGET_OBJECT_FLASH: | |
5487 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
5488 | ||
5489 | if (xfered > 0) | |
5490 | return xfered; | |
5491 | else if (xfered == 0 && errno == 0) | |
5492 | return 0; | |
5493 | else | |
5494 | return -1; | |
5495 | ||
5496 | default: | |
5497 | return -1; | |
5498 | } | |
5499 | } | |
4b8a223f | 5500 | |
1e3ff5ad AC |
5501 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5502 | objects!!! Instead specify new query packets. */ | |
5503 | switch (object) | |
c906108c | 5504 | { |
1e3ff5ad AC |
5505 | case TARGET_OBJECT_AVR: |
5506 | query_type = 'R'; | |
5507 | break; | |
802188a7 RM |
5508 | |
5509 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
5510 | gdb_assert (annex == NULL); |
5511 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
5512 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 5513 | |
fd79ecee DJ |
5514 | case TARGET_OBJECT_MEMORY_MAP: |
5515 | gdb_assert (annex == NULL); | |
5516 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
5517 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
5518 | ||
1e3ff5ad | 5519 | default: |
c906108c SS |
5520 | return -1; |
5521 | } | |
5522 | ||
4b8a223f | 5523 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5524 | buffer size. */ |
4b8a223f | 5525 | if (offset == 0 && len == 0) |
ea9c271d DJ |
5526 | return (get_remote_packet_size ()); |
5527 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 5528 | large enough let the caller deal with it. */ |
ea9c271d | 5529 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 5530 | return -1; |
ea9c271d | 5531 | len = get_remote_packet_size (); |
1e3ff5ad | 5532 | |
23860348 | 5533 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5534 | if (!remote_desc) |
8a3fe4f8 | 5535 | error (_("remote query is only available after target open")); |
c906108c | 5536 | |
1e3ff5ad | 5537 | gdb_assert (annex != NULL); |
4b8a223f | 5538 | gdb_assert (readbuf != NULL); |
c906108c | 5539 | |
6d820c5c | 5540 | p2 = rs->buf; |
c906108c SS |
5541 | *p2++ = 'q'; |
5542 | *p2++ = query_type; | |
5543 | ||
23860348 MS |
5544 | /* We used one buffer char for the remote protocol q command and |
5545 | another for the query type. As the remote protocol encapsulation | |
5546 | uses 4 chars plus one extra in case we are debugging | |
5547 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5548 | string. */ | |
c906108c | 5549 | i = 0; |
ea9c271d | 5550 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 5551 | { |
1e3ff5ad AC |
5552 | /* Bad caller may have sent forbidden characters. */ |
5553 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5554 | *p2++ = annex[i]; | |
c906108c SS |
5555 | i++; |
5556 | } | |
1e3ff5ad AC |
5557 | *p2 = '\0'; |
5558 | gdb_assert (annex[i] == '\0'); | |
c906108c | 5559 | |
6d820c5c | 5560 | i = putpkt (rs->buf); |
c5aa993b JM |
5561 | if (i < 0) |
5562 | return i; | |
c906108c | 5563 | |
6d820c5c DJ |
5564 | getpkt (&rs->buf, &rs->buf_size, 0); |
5565 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 5566 | |
cfd77fa1 | 5567 | return strlen ((char *) readbuf); |
c906108c SS |
5568 | } |
5569 | ||
96baa820 JM |
5570 | static void |
5571 | remote_rcmd (char *command, | |
d9fcf2fb | 5572 | struct ui_file *outbuf) |
96baa820 | 5573 | { |
d01949b6 | 5574 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5575 | char *p = rs->buf; |
96baa820 JM |
5576 | |
5577 | if (!remote_desc) | |
8a3fe4f8 | 5578 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5579 | |
23860348 | 5580 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5581 | if (command == NULL) |
5582 | command = ""; | |
5583 | ||
23860348 | 5584 | /* The query prefix. */ |
2e9f7625 DJ |
5585 | strcpy (rs->buf, "qRcmd,"); |
5586 | p = strchr (rs->buf, '\0'); | |
96baa820 | 5587 | |
2e9f7625 | 5588 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 5589 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5590 | |
23860348 | 5591 | /* Encode the actual command. */ |
cfd77fa1 | 5592 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 5593 | |
6d820c5c | 5594 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 5595 | error (_("Communication problem with target.")); |
96baa820 JM |
5596 | |
5597 | /* get/display the response */ | |
5598 | while (1) | |
5599 | { | |
2e9f7625 DJ |
5600 | char *buf; |
5601 | ||
23860348 | 5602 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 5603 | rs->buf[0] = '\0'; |
6d820c5c | 5604 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5605 | buf = rs->buf; |
96baa820 | 5606 | if (buf[0] == '\0') |
8a3fe4f8 | 5607 | error (_("Target does not support this command.")); |
96baa820 JM |
5608 | if (buf[0] == 'O' && buf[1] != 'K') |
5609 | { | |
23860348 | 5610 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5611 | continue; |
5612 | } | |
5613 | if (strcmp (buf, "OK") == 0) | |
5614 | break; | |
7be570e7 JM |
5615 | if (strlen (buf) == 3 && buf[0] == 'E' |
5616 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5617 | { | |
8a3fe4f8 | 5618 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5619 | } |
96baa820 JM |
5620 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5621 | { | |
5622 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5623 | fputc_unfiltered (c, outbuf); | |
5624 | } | |
5625 | break; | |
5626 | } | |
5627 | } | |
5628 | ||
fd79ecee DJ |
5629 | static VEC(mem_region_s) * |
5630 | remote_memory_map (struct target_ops *ops) | |
5631 | { | |
5632 | VEC(mem_region_s) *result = NULL; | |
5633 | char *text = target_read_stralloc (¤t_target, | |
5634 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
5635 | ||
5636 | if (text) | |
5637 | { | |
5638 | struct cleanup *back_to = make_cleanup (xfree, text); | |
5639 | result = parse_memory_map (text); | |
5640 | do_cleanups (back_to); | |
5641 | } | |
5642 | ||
5643 | return result; | |
5644 | } | |
5645 | ||
c906108c | 5646 | static void |
fba45db2 | 5647 | packet_command (char *args, int from_tty) |
c906108c | 5648 | { |
d01949b6 | 5649 | struct remote_state *rs = get_remote_state (); |
c906108c | 5650 | |
c5aa993b | 5651 | if (!remote_desc) |
8a3fe4f8 | 5652 | error (_("command can only be used with remote target")); |
c906108c | 5653 | |
c5aa993b | 5654 | if (!args) |
8a3fe4f8 | 5655 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5656 | |
5657 | puts_filtered ("sending: "); | |
5658 | print_packet (args); | |
5659 | puts_filtered ("\n"); | |
5660 | putpkt (args); | |
5661 | ||
6d820c5c | 5662 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5663 | puts_filtered ("received: "); |
6d820c5c | 5664 | print_packet (rs->buf); |
c906108c SS |
5665 | puts_filtered ("\n"); |
5666 | } | |
5667 | ||
5668 | #if 0 | |
23860348 | 5669 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5670 | |
a14ed312 | 5671 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5672 | |
a14ed312 | 5673 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5674 | |
a14ed312 | 5675 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5676 | |
a14ed312 | 5677 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5678 | |
23860348 | 5679 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5680 | |
a14ed312 | 5681 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5682 | |
23860348 | 5683 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5684 | |
a14ed312 | 5685 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5686 | |
a14ed312 | 5687 | static void init_remote_threadtests (void); |
c906108c | 5688 | |
23860348 | 5689 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5690 | |
5691 | static void | |
fba45db2 | 5692 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5693 | { |
5694 | int sample_thread = SAMPLE_THREAD; | |
5695 | ||
a3f17187 | 5696 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5697 | set_thread (sample_thread, 1); |
5698 | } | |
5699 | ||
5700 | ||
5701 | static void | |
fba45db2 | 5702 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5703 | { |
5704 | int sample_thread = SAMPLE_THREAD; | |
5705 | ||
39f77062 | 5706 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5707 | printf_filtered ("PASS: Thread alive test\n"); |
5708 | else | |
5709 | printf_filtered ("FAIL: Thread alive test\n"); | |
5710 | } | |
5711 | ||
23860348 | 5712 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5713 | |
5714 | void | |
fba45db2 | 5715 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5716 | { |
5717 | char hexid[20]; | |
5718 | ||
23860348 | 5719 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5720 | hexid[16] = 0; |
5721 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5722 | } | |
5723 | ||
5724 | static void | |
fba45db2 | 5725 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5726 | { |
5727 | int startflag = 1; | |
5728 | threadref nextthread; | |
5729 | int done, result_count; | |
5730 | threadref threadlist[3]; | |
5731 | ||
5732 | printf_filtered ("Remote Threadlist test\n"); | |
5733 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5734 | &result_count, &threadlist[0])) | |
5735 | printf_filtered ("FAIL: threadlist test\n"); | |
5736 | else | |
5737 | { | |
5738 | threadref *scan = threadlist; | |
5739 | threadref *limit = scan + result_count; | |
5740 | ||
5741 | while (scan < limit) | |
5742 | output_threadid (" thread ", scan++); | |
5743 | } | |
5744 | } | |
5745 | ||
5746 | void | |
fba45db2 | 5747 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5748 | { |
5749 | output_threadid ("Threadid: ", &info->threadid); | |
5750 | printf_filtered ("Name: %s\n ", info->shortname); | |
5751 | printf_filtered ("State: %s\n", info->display); | |
5752 | printf_filtered ("other: %s\n\n", info->more_display); | |
5753 | } | |
5754 | ||
5755 | int | |
fba45db2 | 5756 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5757 | { |
5758 | int result; | |
5759 | int set; | |
5760 | struct gdb_ext_thread_info threadinfo; | |
5761 | ||
5762 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5763 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5764 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5765 | display_thread_info (&threadinfo); | |
5766 | return result; | |
5767 | } | |
5768 | ||
5769 | static void | |
fba45db2 | 5770 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5771 | { |
5772 | int athread = SAMPLE_THREAD; | |
5773 | threadref thread; | |
5774 | int set; | |
5775 | ||
5776 | int_to_threadref (&thread, athread); | |
5777 | printf_filtered ("Remote Threadinfo test\n"); | |
5778 | if (!get_and_display_threadinfo (&thread)) | |
5779 | printf_filtered ("FAIL cannot get thread info\n"); | |
5780 | } | |
5781 | ||
5782 | static int | |
fba45db2 | 5783 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5784 | { |
5785 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5786 | return get_and_display_threadinfo (ref); | |
5787 | } | |
5788 | ||
5789 | static void | |
fba45db2 | 5790 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5791 | { |
5792 | printf_filtered ("Remote Threadlist update test\n"); | |
5793 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5794 | } | |
5795 | ||
5796 | static void | |
5797 | init_remote_threadtests (void) | |
5798 | { | |
1bedd215 AC |
5799 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5800 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5801 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5802 | _("Fetch and display info about one thread")); |
c906108c | 5803 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5804 | _("Test setting to a different thread")); |
c906108c | 5805 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5806 | _("Iterate through updating all remote thread info")); |
c906108c | 5807 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5808 | _(" Remote thread alive test ")); |
c906108c SS |
5809 | } |
5810 | ||
5811 | #endif /* 0 */ | |
5812 | ||
f3fb8c85 MS |
5813 | /* Convert a thread ID to a string. Returns the string in a static |
5814 | buffer. */ | |
5815 | ||
5816 | static char * | |
39f77062 | 5817 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 5818 | { |
fd0a2a6f | 5819 | static char buf[32]; |
f3fb8c85 | 5820 | |
6c76e4a1 | 5821 | xsnprintf (buf, sizeof buf, "thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
5822 | return buf; |
5823 | } | |
5824 | ||
38691318 KB |
5825 | /* Get the address of the thread local variable in OBJFILE which is |
5826 | stored at OFFSET within the thread local storage for thread PTID. */ | |
5827 | ||
5828 | static CORE_ADDR | |
5829 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
5830 | { | |
444abaca | 5831 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
5832 | { |
5833 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 5834 | char *p = rs->buf; |
571dd617 | 5835 | enum packet_result result; |
38691318 KB |
5836 | |
5837 | strcpy (p, "qGetTLSAddr:"); | |
5838 | p += strlen (p); | |
5839 | p += hexnumstr (p, PIDGET (ptid)); | |
5840 | *p++ = ','; | |
5841 | p += hexnumstr (p, offset); | |
5842 | *p++ = ','; | |
5843 | p += hexnumstr (p, lm); | |
5844 | *p++ = '\0'; | |
5845 | ||
6d820c5c DJ |
5846 | putpkt (rs->buf); |
5847 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5848 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 5849 | if (result == PACKET_OK) |
38691318 KB |
5850 | { |
5851 | ULONGEST result; | |
5852 | ||
6d820c5c | 5853 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
5854 | return result; |
5855 | } | |
571dd617 | 5856 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
5857 | throw_error (TLS_GENERIC_ERROR, |
5858 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 5859 | else |
109c3e39 AC |
5860 | throw_error (TLS_GENERIC_ERROR, |
5861 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
5862 | } |
5863 | else | |
109c3e39 AC |
5864 | throw_error (TLS_GENERIC_ERROR, |
5865 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
5866 | /* Not reached. */ |
5867 | return 0; | |
5868 | } | |
5869 | ||
c906108c | 5870 | static void |
fba45db2 | 5871 | init_remote_ops (void) |
c906108c | 5872 | { |
c5aa993b | 5873 | remote_ops.to_shortname = "remote"; |
c906108c | 5874 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5875 | remote_ops.to_doc = |
c906108c | 5876 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5877 | Specify the serial device it is connected to\n\ |
5878 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5879 | remote_ops.to_open = remote_open; |
5880 | remote_ops.to_close = remote_close; | |
c906108c | 5881 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5882 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5883 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5884 | remote_ops.to_wait = remote_wait; |
5885 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5886 | remote_ops.to_store_registers = remote_store_registers; | |
5887 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5888 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5889 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5890 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5891 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5892 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5893 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5894 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5895 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5896 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5897 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5898 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5899 | remote_ops.to_kill = remote_kill; |
5900 | remote_ops.to_load = generic_load; | |
c906108c SS |
5901 | remote_ops.to_mourn_inferior = remote_mourn; |
5902 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5903 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5904 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5905 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5906 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5907 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5908 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 5909 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 5910 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5911 | remote_ops.to_has_all_memory = 1; |
5912 | remote_ops.to_has_memory = 1; | |
5913 | remote_ops.to_has_stack = 1; | |
5914 | remote_ops.to_has_registers = 1; | |
5915 | remote_ops.to_has_execution = 1; | |
5916 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5917 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 5918 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
5919 | remote_ops.to_flash_erase = remote_flash_erase; |
5920 | remote_ops.to_flash_done = remote_flash_done; | |
c906108c SS |
5921 | } |
5922 | ||
5923 | /* Set up the extended remote vector by making a copy of the standard | |
5924 | remote vector and adding to it. */ | |
5925 | ||
5926 | static void | |
fba45db2 | 5927 | init_extended_remote_ops (void) |
c906108c SS |
5928 | { |
5929 | extended_remote_ops = remote_ops; | |
5930 | ||
0f71a2f6 | 5931 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5932 | extended_remote_ops.to_longname = |
c906108c | 5933 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5934 | extended_remote_ops.to_doc = |
c906108c SS |
5935 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5936 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5937 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5938 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5939 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5940 | } |
5941 | ||
6426a772 JM |
5942 | static int |
5943 | remote_can_async_p (void) | |
5944 | { | |
23860348 | 5945 | /* We're async whenever the serial device is. */ |
2cd58942 | 5946 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5947 | } |
5948 | ||
5949 | static int | |
5950 | remote_is_async_p (void) | |
5951 | { | |
23860348 | 5952 | /* We're async whenever the serial device is. */ |
2cd58942 | 5953 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5954 | } |
5955 | ||
2acceee2 JM |
5956 | /* Pass the SERIAL event on and up to the client. One day this code |
5957 | will be able to delay notifying the client of an event until the | |
23860348 | 5958 | point where an entire packet has been received. */ |
2acceee2 | 5959 | |
2bc416ba | 5960 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 5961 | void *context); |
2acceee2 JM |
5962 | static void *async_client_context; |
5963 | static serial_event_ftype remote_async_serial_handler; | |
5964 | ||
6426a772 | 5965 | static void |
819cc324 | 5966 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5967 | { |
2acceee2 JM |
5968 | /* Don't propogate error information up to the client. Instead let |
5969 | the client find out about the error by querying the target. */ | |
5970 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5971 | } | |
5972 | ||
5973 | static void | |
2bc416ba | 5974 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 5975 | void *context), void *context) |
2acceee2 | 5976 | { |
ed9a39eb | 5977 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5978 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5979 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5980 | |
2acceee2 JM |
5981 | if (callback != NULL) |
5982 | { | |
2cd58942 | 5983 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5984 | async_client_callback = callback; |
5985 | async_client_context = context; | |
5986 | } | |
5987 | else | |
2cd58942 | 5988 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5989 | } |
5990 | ||
43ff13b4 JM |
5991 | /* Target async and target extended-async. |
5992 | ||
5993 | This are temporary targets, until it is all tested. Eventually | |
5994 | async support will be incorporated int the usual 'remote' | |
23860348 | 5995 | target. */ |
43ff13b4 JM |
5996 | |
5997 | static void | |
c2d11a7d | 5998 | init_remote_async_ops (void) |
43ff13b4 JM |
5999 | { |
6000 | remote_async_ops.to_shortname = "async"; | |
2bc416ba | 6001 | remote_async_ops.to_longname = |
23860348 | 6002 | "Remote serial target in async version of the gdb-specific protocol"; |
c5aa993b | 6003 | remote_async_ops.to_doc = |
43ff13b4 JM |
6004 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6005 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
6006 | remote_async_ops.to_open = remote_async_open; |
6007 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
6008 | remote_async_ops.to_detach = remote_detach; |
6009 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
6010 | remote_async_ops.to_resume = remote_async_resume; |
6011 | remote_async_ops.to_wait = remote_async_wait; | |
6012 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
6013 | remote_async_ops.to_store_registers = remote_store_registers; | |
6014 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6015 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6016 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
6017 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6018 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6019 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
6020 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6021 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6022 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6023 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
6024 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
6025 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
6026 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
6027 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
6028 | remote_async_ops.to_kill = remote_async_kill; |
6029 | remote_async_ops.to_load = generic_load; | |
53a5351d | 6030 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
6031 | remote_async_ops.to_thread_alive = remote_thread_alive; |
6032 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
6033 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
6034 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 6035 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 6036 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6037 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
6038 | remote_async_ops.to_stratum = process_stratum; |
6039 | remote_async_ops.to_has_all_memory = 1; | |
6040 | remote_async_ops.to_has_memory = 1; | |
6041 | remote_async_ops.to_has_stack = 1; | |
6042 | remote_async_ops.to_has_registers = 1; | |
6043 | remote_async_ops.to_has_execution = 1; | |
6044 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
6045 | remote_async_ops.to_can_async_p = remote_can_async_p; |
6046 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
6047 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 6048 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 6049 | remote_async_ops.to_magic = OPS_MAGIC; |
fd79ecee | 6050 | remote_async_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6051 | remote_async_ops.to_flash_erase = remote_flash_erase; |
6052 | remote_async_ops.to_flash_done = remote_flash_done; | |
43ff13b4 JM |
6053 | } |
6054 | ||
6055 | /* Set up the async extended remote vector by making a copy of the standard | |
6056 | remote vector and adding to it. */ | |
6057 | ||
6058 | static void | |
c2d11a7d | 6059 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
6060 | { |
6061 | extended_async_remote_ops = remote_async_ops; | |
6062 | ||
6063 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 6064 | extended_async_remote_ops.to_longname = |
43ff13b4 | 6065 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 6066 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
6067 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
6068 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6069 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
6070 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6071 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6072 | } | |
6073 | ||
5a2468f5 | 6074 | static void |
c2d11a7d | 6075 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6076 | { |
5a2468f5 JM |
6077 | } |
6078 | ||
d471ea57 AC |
6079 | static void |
6080 | show_remote_cmd (char *args, int from_tty) | |
6081 | { | |
37a105a1 DJ |
6082 | /* We can't just use cmd_show_list here, because we want to skip |
6083 | the redundant "show remote Z-packet". */ | |
6084 | struct cleanup *showlist_chain; | |
6085 | struct cmd_list_element *list = remote_show_cmdlist; | |
6086 | ||
6087 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
6088 | for (; list != NULL; list = list->next) | |
6089 | if (strcmp (list->name, "Z-packet") == 0) | |
6090 | continue; | |
6091 | else if (list->type == show_cmd) | |
6092 | { | |
6093 | struct cleanup *option_chain | |
6094 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
6095 | ui_out_field_string (uiout, "name", list->name); | |
6096 | ui_out_text (uiout, ": "); | |
6097 | do_setshow_command ((char *) NULL, from_tty, list); | |
6098 | /* Close the tuple. */ | |
6099 | do_cleanups (option_chain); | |
6100 | } | |
d471ea57 | 6101 | } |
5a2468f5 | 6102 | |
0f71a2f6 | 6103 | static void |
fba45db2 | 6104 | build_remote_gdbarch_data (void) |
0f71a2f6 | 6105 | { |
d696208f | 6106 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
6107 | } |
6108 | ||
23860348 | 6109 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
6110 | static void (*remote_new_objfile_chain) (struct objfile *); |
6111 | ||
23860348 | 6112 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
6113 | static void |
6114 | remote_new_objfile (struct objfile *objfile) | |
6115 | { | |
23860348 | 6116 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
6117 | { |
6118 | remote_check_symbols (objfile); | |
6119 | } | |
23860348 | 6120 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
6121 | if (remote_new_objfile_chain != 0 && |
6122 | remote_desc == 0) | |
6123 | remote_new_objfile_chain (objfile); | |
6124 | } | |
6125 | ||
c906108c | 6126 | void |
fba45db2 | 6127 | _initialize_remote (void) |
c906108c | 6128 | { |
ea9c271d DJ |
6129 | struct remote_state *rs; |
6130 | ||
0f71a2f6 | 6131 | /* architecture specific data */ |
2bc416ba | 6132 | remote_gdbarch_data_handle = |
23860348 | 6133 | gdbarch_data_register_post_init (init_remote_state); |
d01949b6 AC |
6134 | |
6135 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
6136 | that the remote protocol has been initialized. */ | |
046a4708 AC |
6137 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
6138 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 6139 | |
ea9c271d DJ |
6140 | /* Initialize the per-target state. At the moment there is only one |
6141 | of these, not one per target. Only one target is active at a | |
6142 | time. The default buffer size is unimportant; it will be expanded | |
6143 | whenever a larger buffer is needed. */ | |
6144 | rs = get_remote_state (); | |
6145 | rs->buf_size = 400; | |
6146 | rs->buf = xmalloc (rs->buf_size); | |
6147 | ||
c906108c SS |
6148 | init_remote_ops (); |
6149 | add_target (&remote_ops); | |
6150 | ||
6151 | init_extended_remote_ops (); | |
6152 | add_target (&extended_remote_ops); | |
cce74817 | 6153 | |
43ff13b4 JM |
6154 | init_remote_async_ops (); |
6155 | add_target (&remote_async_ops); | |
6156 | ||
6157 | init_extended_async_remote_ops (); | |
6158 | add_target (&extended_async_remote_ops); | |
6159 | ||
dc8acb97 | 6160 | /* Hook into new objfile notification. */ |
9a4105ab AC |
6161 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
6162 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 6163 | |
c906108c SS |
6164 | #if 0 |
6165 | init_remote_threadtests (); | |
6166 | #endif | |
6167 | ||
23860348 | 6168 | /* set/show remote ... */ |
d471ea57 | 6169 | |
1bedd215 | 6170 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
6171 | Remote protocol specific variables\n\ |
6172 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6173 | the packets being used"), |
cff3e48b | 6174 | &remote_set_cmdlist, "set remote ", |
23860348 | 6175 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 6176 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
6177 | Remote protocol specific variables\n\ |
6178 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6179 | the packets being used"), |
cff3e48b | 6180 | &remote_show_cmdlist, "show remote ", |
23860348 | 6181 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 6182 | |
1a966eab AC |
6183 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
6184 | Compare section data on target to the exec file.\n\ | |
6185 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
6186 | &cmdlist); |
6187 | ||
1a966eab AC |
6188 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
6189 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
6190 | maintenance packet TEXT\n\ |
6191 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6192 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6193 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 6194 | terminating `#' character and checksum."), |
c906108c SS |
6195 | &maintenancelist); |
6196 | ||
7915a72c AC |
6197 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
6198 | Set whether to send break if interrupted."), _("\ | |
6199 | Show whether to send break if interrupted."), _("\ | |
6200 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 6201 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 6202 | &setlist, &showlist); |
c906108c | 6203 | |
23860348 | 6204 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 6205 | |
1a966eab AC |
6206 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
6207 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 6208 | &setlist); |
1a966eab AC |
6209 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
6210 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
6211 | &showlist); |
6212 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
6213 | set_memory_write_packet_size, _("\ |
6214 | Set the maximum number of bytes per memory-write packet.\n\ | |
6215 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6216 | default packet size. The actual limit is further reduced\n\ | |
6217 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6218 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6219 | &remote_set_cmdlist); |
6220 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
6221 | set_memory_read_packet_size, _("\ |
6222 | Set the maximum number of bytes per memory-read packet.\n\ | |
6223 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6224 | default packet size. The actual limit is further reduced\n\ | |
6225 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6226 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6227 | &remote_set_cmdlist); |
6228 | add_cmd ("memory-write-packet-size", no_class, | |
6229 | show_memory_write_packet_size, | |
1a966eab | 6230 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
6231 | &remote_show_cmdlist); |
6232 | add_cmd ("memory-read-packet-size", no_class, | |
6233 | show_memory_read_packet_size, | |
1a966eab | 6234 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 6235 | &remote_show_cmdlist); |
c906108c | 6236 | |
b3f42336 | 6237 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
6238 | &remote_hw_watchpoint_limit, _("\ |
6239 | Set the maximum number of target hardware watchpoints."), _("\ | |
6240 | Show the maximum number of target hardware watchpoints."), _("\ | |
6241 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6242 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
6243 | &remote_set_cmdlist, &remote_show_cmdlist); |
6244 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
6245 | &remote_hw_breakpoint_limit, _("\ |
6246 | Set the maximum number of target hardware breakpoints."), _("\ | |
6247 | Show the maximum number of target hardware breakpoints."), _("\ | |
6248 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6249 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 6250 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 6251 | |
4d28ad1e AC |
6252 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
6253 | &remote_address_size, _("\ | |
6254 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
6255 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
6256 | NULL, | |
6257 | NULL, /* FIXME: i18n: */ | |
6258 | &setlist, &showlist); | |
c906108c | 6259 | |
444abaca | 6260 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 6261 | "X", "binary-download", 1); |
0f71a2f6 | 6262 | |
444abaca | 6263 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 6264 | "vCont", "verbose-resume", 0); |
506fb367 | 6265 | |
444abaca | 6266 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 6267 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 6268 | |
444abaca | 6269 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 6270 | "P", "set-register", 1); |
d471ea57 | 6271 | |
444abaca | 6272 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 6273 | "p", "fetch-register", 1); |
b96ec7ac | 6274 | |
444abaca | 6275 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 6276 | "Z0", "software-breakpoint", 0); |
d471ea57 | 6277 | |
444abaca | 6278 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 6279 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 6280 | |
444abaca | 6281 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 6282 | "Z2", "write-watchpoint", 0); |
d471ea57 | 6283 | |
444abaca | 6284 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 6285 | "Z3", "read-watchpoint", 0); |
d471ea57 | 6286 | |
444abaca | 6287 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 6288 | "Z4", "access-watchpoint", 0); |
d471ea57 | 6289 | |
0876f84a DJ |
6290 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
6291 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 6292 | |
fd79ecee DJ |
6293 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
6294 | "qXfer:memory-map:read", "memory-map", 0); | |
6295 | ||
444abaca | 6296 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 6297 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
6298 | 0); |
6299 | ||
be2a5f71 DJ |
6300 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
6301 | "qSupported", "supported-packets", 0); | |
6302 | ||
37a105a1 DJ |
6303 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
6304 | Z sub-packet has its own set and show commands, but users may | |
6305 | have sets to this variable in their .gdbinit files (or in their | |
6306 | documentation). */ | |
e9e68a56 | 6307 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
6308 | &remote_Z_packet_detect, _("\ |
6309 | Set use of remote protocol `Z' packets"), _("\ | |
6310 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 6311 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 6312 | packets."), |
e9e68a56 | 6313 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 6314 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 6315 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
6316 | |
6317 | /* Eventually initialize fileio. See fileio.c */ | |
6318 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 6319 | } |