Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 | |
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" | |
424163ea | 48 | #include "target-descriptions.h" |
c906108c | 49 | |
7a292a7a | 50 | #include <ctype.h> |
9846de1b | 51 | #include <sys/time.h> |
c906108c | 52 | |
43ff13b4 | 53 | #include "event-loop.h" |
c2c6d25f | 54 | #include "event-top.h" |
2acceee2 | 55 | #include "inf-loop.h" |
43ff13b4 | 56 | |
c906108c SS |
57 | #include <signal.h> |
58 | #include "serial.h" | |
59 | ||
6240bebf MS |
60 | #include "gdbcore.h" /* for exec_bfd */ |
61 | ||
449092f6 CV |
62 | #include "remote-fileio.h" |
63 | ||
fd79ecee DJ |
64 | #include "memory-map.h" |
65 | ||
6765f3e5 DJ |
66 | /* The size to align memory write packets, when practical. The protocol |
67 | does not guarantee any alignment, and gdb will generate short | |
68 | writes and unaligned writes, but even as a best-effort attempt this | |
69 | can improve bulk transfers. For instance, if a write is misaligned | |
70 | relative to the target's data bus, the stub may need to make an extra | |
71 | round trip fetching data from the target. This doesn't make a | |
72 | huge difference, but it's easy to do, so we try to be helpful. | |
73 | ||
74 | The alignment chosen is arbitrary; usually data bus width is | |
75 | important here, not the possibly larger cache line size. */ | |
76 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
77 | ||
23860348 | 78 | /* Prototypes for local functions. */ |
6426a772 JM |
79 | static void cleanup_sigint_signal_handler (void *dummy); |
80 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 81 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 82 | |
a14ed312 KB |
83 | static void handle_remote_sigint (int); |
84 | static void handle_remote_sigint_twice (int); | |
85 | static void async_remote_interrupt (gdb_client_data); | |
86 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 87 | |
a14ed312 | 88 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 89 | |
a14ed312 | 90 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 91 | |
a14ed312 | 92 | static void remote_prepare_to_store (void); |
c906108c | 93 | |
a14ed312 | 94 | static void remote_fetch_registers (int regno); |
c906108c | 95 | |
39f77062 KB |
96 | static void remote_resume (ptid_t ptid, int step, |
97 | enum target_signal siggnal); | |
98 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 99 | enum target_signal siggnal); |
a14ed312 KB |
100 | static void remote_open (char *name, int from_tty); |
101 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 102 | |
a14ed312 KB |
103 | static void extended_remote_open (char *name, int from_tty); |
104 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 105 | |
92d1e331 DJ |
106 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
107 | int async_p); | |
c906108c | 108 | |
a14ed312 | 109 | static void remote_close (int quitting); |
c906108c | 110 | |
a14ed312 | 111 | static void remote_store_registers (int regno); |
c906108c | 112 | |
a14ed312 KB |
113 | static void remote_mourn (void); |
114 | static void remote_async_mourn (void); | |
c906108c | 115 | |
a14ed312 | 116 | static void extended_remote_restart (void); |
c906108c | 117 | |
a14ed312 | 118 | static void extended_remote_mourn (void); |
c906108c | 119 | |
a14ed312 | 120 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 121 | |
6d820c5c | 122 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 123 | |
a14ed312 | 124 | static int readchar (int timeout); |
c906108c | 125 | |
39f77062 KB |
126 | static ptid_t remote_wait (ptid_t ptid, |
127 | struct target_waitstatus *status); | |
128 | static ptid_t remote_async_wait (ptid_t ptid, | |
129 | struct target_waitstatus *status); | |
c906108c | 130 | |
a14ed312 KB |
131 | static void remote_kill (void); |
132 | static void remote_async_kill (void); | |
c906108c | 133 | |
a14ed312 | 134 | static int tohex (int nib); |
c906108c | 135 | |
a14ed312 | 136 | static void remote_detach (char *args, int from_tty); |
c906108c | 137 | |
a14ed312 | 138 | static void remote_interrupt (int signo); |
c906108c | 139 | |
a14ed312 | 140 | static void remote_interrupt_twice (int signo); |
7a292a7a | 141 | |
a14ed312 | 142 | static void interrupt_query (void); |
c906108c | 143 | |
a14ed312 | 144 | static void set_thread (int, int); |
c906108c | 145 | |
39f77062 | 146 | static int remote_thread_alive (ptid_t); |
c906108c | 147 | |
a14ed312 | 148 | static void get_offsets (void); |
c906108c | 149 | |
6d820c5c DJ |
150 | static void skip_frame (void); |
151 | ||
152 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 153 | |
a14ed312 | 154 | static int hexnumlen (ULONGEST num); |
c906108c | 155 | |
a14ed312 | 156 | static void init_remote_ops (void); |
c906108c | 157 | |
a14ed312 | 158 | static void init_extended_remote_ops (void); |
c906108c | 159 | |
a14ed312 | 160 | static void remote_stop (void); |
c906108c | 161 | |
a14ed312 | 162 | static int ishex (int ch, int *val); |
c906108c | 163 | |
a14ed312 | 164 | static int stubhex (int ch); |
c906108c | 165 | |
a14ed312 | 166 | static int hexnumstr (char *, ULONGEST); |
c906108c | 167 | |
a14ed312 | 168 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 169 | |
a14ed312 | 170 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 171 | |
a14ed312 | 172 | static void print_packet (char *); |
c906108c | 173 | |
a14ed312 | 174 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 175 | |
a14ed312 | 176 | static void compare_sections_command (char *, int); |
c906108c | 177 | |
a14ed312 | 178 | static void packet_command (char *, int); |
c906108c | 179 | |
a14ed312 | 180 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 181 | |
39f77062 | 182 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 183 | |
a14ed312 | 184 | static void remote_find_new_threads (void); |
c906108c | 185 | |
a14ed312 | 186 | static void record_currthread (int currthread); |
c906108c | 187 | |
30559e10 | 188 | static int fromhex (int a); |
c906108c | 189 | |
cfd77fa1 | 190 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 191 | |
cfd77fa1 | 192 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 193 | |
a14ed312 | 194 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 195 | |
a14ed312 | 196 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 197 | |
5a2468f5 | 198 | struct packet_config; |
5a2468f5 | 199 | |
a14ed312 | 200 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 201 | |
d471ea57 | 202 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 203 | |
bb572ddd DJ |
204 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
205 | struct cmd_list_element *c); | |
206 | ||
207 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
208 | int from_tty, | |
209 | struct cmd_list_element *c, | |
210 | const char *value); | |
211 | ||
a14ed312 | 212 | void _initialize_remote (void); |
c906108c | 213 | |
bb572ddd DJ |
214 | /* For "set remote" and "show remote". */ |
215 | ||
216 | static struct cmd_list_element *remote_set_cmdlist; | |
217 | static struct cmd_list_element *remote_show_cmdlist; | |
218 | ||
ea9c271d DJ |
219 | /* Description of the remote protocol state for the currently |
220 | connected target. This is per-target state, and independent of the | |
221 | selected architecture. */ | |
222 | ||
223 | struct remote_state | |
224 | { | |
225 | /* A buffer to use for incoming packets, and its current size. The | |
226 | buffer is grown dynamically for larger incoming packets. | |
227 | Outgoing packets may also be constructed in this buffer. | |
228 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
229 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
230 | packets. */ | |
231 | char *buf; | |
232 | long buf_size; | |
be2a5f71 DJ |
233 | |
234 | /* If we negotiated packet size explicitly (and thus can bypass | |
235 | heuristics for the largest packet size that will not overflow | |
236 | a buffer in the stub), this will be set to that packet size. | |
237 | Otherwise zero, meaning to use the guessed size. */ | |
238 | long explicit_packet_size; | |
ea9c271d DJ |
239 | }; |
240 | ||
241 | /* This data could be associated with a target, but we do not always | |
242 | have access to the current target when we need it, so for now it is | |
243 | static. This will be fine for as long as only one target is in use | |
244 | at a time. */ | |
245 | static struct remote_state remote_state; | |
246 | ||
247 | static struct remote_state * | |
0b83947e | 248 | get_remote_state_raw (void) |
ea9c271d DJ |
249 | { |
250 | return &remote_state; | |
251 | } | |
252 | ||
253 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 254 | |
ad10f812 AC |
255 | struct packet_reg |
256 | { | |
257 | long offset; /* Offset into G packet. */ | |
258 | long regnum; /* GDB's internal register number. */ | |
259 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 260 | int in_g_packet; /* Always part of G packet. */ |
2bc416ba | 261 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
23860348 | 262 | at present. */ |
ad10f812 AC |
263 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
264 | }; | |
265 | ||
ea9c271d | 266 | struct remote_arch_state |
d01949b6 | 267 | { |
ad10f812 AC |
268 | /* Description of the remote protocol registers. */ |
269 | long sizeof_g_packet; | |
b323314b AC |
270 | |
271 | /* Description of the remote protocol registers indexed by REGNUM | |
74ca34ce | 272 | (making an array NUM_REGS in size). */ |
b323314b | 273 | struct packet_reg *regs; |
ad10f812 | 274 | |
d01949b6 AC |
275 | /* This is the size (in chars) of the first response to the ``g'' |
276 | packet. It is used as a heuristic when determining the maximum | |
277 | size of memory-read and memory-write packets. A target will | |
278 | typically only reserve a buffer large enough to hold the ``g'' | |
279 | packet. The size does not include packet overhead (headers and | |
23860348 | 280 | trailers). */ |
d01949b6 AC |
281 | long actual_register_packet_size; |
282 | ||
283 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 284 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
285 | long remote_packet_size; |
286 | }; | |
287 | ||
3c3bea1c | 288 | |
d01949b6 AC |
289 | /* Handle for retreving the remote protocol data from gdbarch. */ |
290 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
291 | ||
ea9c271d DJ |
292 | static struct remote_arch_state * |
293 | get_remote_arch_state (void) | |
d01949b6 | 294 | { |
451fbdda | 295 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
296 | } |
297 | ||
0b83947e DJ |
298 | /* Fetch the global remote target state. */ |
299 | ||
300 | static struct remote_state * | |
301 | get_remote_state (void) | |
302 | { | |
303 | /* Make sure that the remote architecture state has been | |
304 | initialized, because doing so might reallocate rs->buf. Any | |
305 | function which calls getpkt also needs to be mindful of changes | |
306 | to rs->buf, but this call limits the number of places which run | |
307 | into trouble. */ | |
308 | get_remote_arch_state (); | |
309 | ||
310 | return get_remote_state_raw (); | |
311 | } | |
312 | ||
74ca34ce DJ |
313 | static int |
314 | compare_pnums (const void *lhs_, const void *rhs_) | |
315 | { | |
316 | const struct packet_reg * const *lhs = lhs_; | |
317 | const struct packet_reg * const *rhs = rhs_; | |
318 | ||
319 | if ((*lhs)->pnum < (*rhs)->pnum) | |
320 | return -1; | |
321 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
322 | return 0; | |
323 | else | |
324 | return 1; | |
325 | } | |
326 | ||
d01949b6 AC |
327 | static void * |
328 | init_remote_state (struct gdbarch *gdbarch) | |
329 | { | |
74ca34ce | 330 | int regnum, num_remote_regs, offset; |
0b83947e | 331 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 332 | struct remote_arch_state *rsa; |
74ca34ce | 333 | struct packet_reg **remote_regs; |
ea9c271d DJ |
334 | |
335 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 336 | |
123dc839 DJ |
337 | /* Use the architecture to build a regnum<->pnum table, which will be |
338 | 1:1 unless a feature set specifies otherwise. */ | |
74ca34ce DJ |
339 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS, struct packet_reg); |
340 | for (regnum = 0; regnum < NUM_REGS; regnum++) | |
ad10f812 | 341 | { |
ea9c271d | 342 | struct packet_reg *r = &rsa->regs[regnum]; |
123dc839 | 343 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); |
b323314b | 344 | r->regnum = regnum; |
74ca34ce DJ |
345 | } |
346 | ||
347 | /* Define the g/G packet format as the contents of each register | |
348 | with a remote protocol number, in order of ascending protocol | |
349 | number. */ | |
350 | ||
351 | remote_regs = alloca (NUM_REGS * sizeof (struct packet_reg *)); | |
352 | for (num_remote_regs = 0, regnum = 0; regnum < NUM_REGS; regnum++) | |
353 | if (rsa->regs[regnum].pnum != -1) | |
354 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 355 | |
74ca34ce DJ |
356 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
357 | compare_pnums); | |
358 | ||
359 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
360 | { | |
361 | remote_regs[regnum]->in_g_packet = 1; | |
362 | remote_regs[regnum]->offset = offset; | |
363 | offset += register_size (current_gdbarch, remote_regs[regnum]->regnum); | |
ad10f812 AC |
364 | } |
365 | ||
74ca34ce DJ |
366 | /* Record the maximum possible size of the g packet - it may turn out |
367 | to be smaller. */ | |
368 | rsa->sizeof_g_packet = offset; | |
369 | ||
d01949b6 AC |
370 | /* Default maximum number of characters in a packet body. Many |
371 | remote stubs have a hardwired buffer size of 400 bytes | |
372 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
373 | as the maximum packet-size to ensure that the packet and an extra | |
374 | NUL character can always fit in the buffer. This stops GDB | |
375 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
376 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
377 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 378 | |
ea9c271d DJ |
379 | /* This one is filled in when a ``g'' packet is received. */ |
380 | rsa->actual_register_packet_size = 0; | |
381 | ||
382 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
383 | default, adjust the size accordingly. Remember that each byte is |
384 | encoded as two characters. 32 is the overhead for the packet | |
385 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 386 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 387 | little. */ |
ea9c271d DJ |
388 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
389 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 390 | |
ea9c271d DJ |
391 | /* Make sure that the packet buffer is plenty big enough for |
392 | this architecture. */ | |
393 | if (rs->buf_size < rsa->remote_packet_size) | |
394 | { | |
395 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 396 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 397 | } |
6d820c5c | 398 | |
ea9c271d DJ |
399 | return rsa; |
400 | } | |
401 | ||
402 | /* Return the current allowed size of a remote packet. This is | |
403 | inferred from the current architecture, and should be used to | |
404 | limit the length of outgoing packets. */ | |
405 | static long | |
406 | get_remote_packet_size (void) | |
407 | { | |
be2a5f71 | 408 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
409 | struct remote_arch_state *rsa = get_remote_arch_state (); |
410 | ||
be2a5f71 DJ |
411 | if (rs->explicit_packet_size) |
412 | return rs->explicit_packet_size; | |
413 | ||
ea9c271d | 414 | return rsa->remote_packet_size; |
d01949b6 AC |
415 | } |
416 | ||
ad10f812 | 417 | static struct packet_reg * |
ea9c271d | 418 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 419 | { |
74ca34ce | 420 | if (regnum < 0 && regnum >= NUM_REGS) |
b323314b AC |
421 | return NULL; |
422 | else | |
ad10f812 | 423 | { |
ea9c271d | 424 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
425 | gdb_assert (r->regnum == regnum); |
426 | return r; | |
ad10f812 | 427 | } |
ad10f812 AC |
428 | } |
429 | ||
430 | static struct packet_reg * | |
ea9c271d | 431 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 432 | { |
b323314b | 433 | int i; |
74ca34ce | 434 | for (i = 0; i < NUM_REGS; i++) |
ad10f812 | 435 | { |
ea9c271d | 436 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
437 | if (r->pnum == pnum) |
438 | return r; | |
ad10f812 AC |
439 | } |
440 | return NULL; | |
d01949b6 AC |
441 | } |
442 | ||
3c3bea1c GS |
443 | /* FIXME: graces/2002-08-08: These variables should eventually be |
444 | bound to an instance of the target object (as in gdbarch-tdep()), | |
445 | when such a thing exists. */ | |
446 | ||
447 | /* This is set to the data address of the access causing the target | |
448 | to stop for a watchpoint. */ | |
449 | static CORE_ADDR remote_watch_data_address; | |
450 | ||
94e08568 | 451 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
452 | static int remote_stopped_by_watchpoint_p; |
453 | ||
c906108c SS |
454 | static struct target_ops remote_ops; |
455 | ||
456 | static struct target_ops extended_remote_ops; | |
457 | ||
43ff13b4 | 458 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 459 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
460 | static struct target_ops remote_async_ops; |
461 | ||
462 | static struct target_ops extended_async_remote_ops; | |
463 | ||
6426a772 JM |
464 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
465 | ``forever'' still use the normal timeout mechanism. This is | |
466 | currently used by the ASYNC code to guarentee that target reads | |
467 | during the initial connect always time-out. Once getpkt has been | |
468 | modified to return a timeout indication and, in turn | |
469 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 470 | this can go away. */ |
6426a772 JM |
471 | static int wait_forever_enabled_p = 1; |
472 | ||
473 | ||
c906108c SS |
474 | /* This variable chooses whether to send a ^C or a break when the user |
475 | requests program interruption. Although ^C is usually what remote | |
476 | systems expect, and that is the default here, sometimes a break is | |
477 | preferable instead. */ | |
478 | ||
479 | static int remote_break; | |
480 | ||
c906108c SS |
481 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
482 | remote_open knows that we don't have a file open when the program | |
483 | starts. */ | |
819cc324 | 484 | static struct serial *remote_desc = NULL; |
c906108c | 485 | |
c906108c SS |
486 | /* This variable sets the number of bits in an address that are to be |
487 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
488 | leading zeros, the entire address would be sent. This variable | |
489 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
490 | initial implementation of remote.c restricted the address sent in | |
491 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
492 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
493 | address was never sent. Since fixing this bug may cause a break in | |
494 | some remote targets this variable is principly provided to | |
23860348 | 495 | facilitate backward compatibility. */ |
c906108c SS |
496 | |
497 | static int remote_address_size; | |
498 | ||
6426a772 JM |
499 | /* Tempoary to track who currently owns the terminal. See |
500 | target_async_terminal_* for more details. */ | |
501 | ||
502 | static int remote_async_terminal_ours_p; | |
503 | ||
11cf8741 | 504 | \f |
11cf8741 | 505 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
506 | memory read/write packet. MIN (rsa->remote_packet_size, |
507 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 508 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
509 | (speed up transfers). The variables ``preferred_*'' (the user |
510 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 511 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
512 | |
513 | struct memory_packet_config | |
514 | { | |
515 | char *name; | |
516 | long size; | |
517 | int fixed_p; | |
518 | }; | |
519 | ||
520 | /* Compute the current size of a read/write packet. Since this makes | |
521 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
522 | ||
523 | static long | |
524 | get_memory_packet_size (struct memory_packet_config *config) | |
525 | { | |
d01949b6 | 526 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
527 | struct remote_arch_state *rsa = get_remote_arch_state (); |
528 | ||
11cf8741 JM |
529 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
530 | law?) that some hosts don't cope very well with large alloca() | |
531 | calls. Eventually the alloca() code will be replaced by calls to | |
532 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 533 | be lifted or removed. */ |
11cf8741 JM |
534 | #ifndef MAX_REMOTE_PACKET_SIZE |
535 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
536 | #endif | |
3de11b2e | 537 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 538 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 539 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
540 | #endif |
541 | long what_they_get; | |
542 | if (config->fixed_p) | |
543 | { | |
544 | if (config->size <= 0) | |
545 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
546 | else | |
547 | what_they_get = config->size; | |
548 | } | |
549 | else | |
550 | { | |
ea9c271d | 551 | what_they_get = get_remote_packet_size (); |
23860348 | 552 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
553 | if (config->size > 0 |
554 | && what_they_get > config->size) | |
555 | what_they_get = config->size; | |
be2a5f71 DJ |
556 | |
557 | /* Limit it to the size of the targets ``g'' response unless we have | |
558 | permission from the stub to use a larger packet size. */ | |
559 | if (rs->explicit_packet_size == 0 | |
560 | && rsa->actual_register_packet_size > 0 | |
561 | && what_they_get > rsa->actual_register_packet_size) | |
562 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
563 | } |
564 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
565 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
566 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
567 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
568 | |
569 | /* Make sure there is room in the global buffer for this packet | |
570 | (including its trailing NUL byte). */ | |
571 | if (rs->buf_size < what_they_get + 1) | |
572 | { | |
573 | rs->buf_size = 2 * what_they_get; | |
574 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
575 | } | |
576 | ||
11cf8741 JM |
577 | return what_they_get; |
578 | } | |
579 | ||
580 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 581 | something really big then do a sanity check. */ |
11cf8741 JM |
582 | |
583 | static void | |
584 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
585 | { | |
586 | int fixed_p = config->fixed_p; | |
587 | long size = config->size; | |
588 | if (args == NULL) | |
8a3fe4f8 | 589 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
590 | else if (strcmp (args, "hard") == 0 |
591 | || strcmp (args, "fixed") == 0) | |
592 | fixed_p = 1; | |
593 | else if (strcmp (args, "soft") == 0 | |
594 | || strcmp (args, "limit") == 0) | |
595 | fixed_p = 0; | |
596 | else | |
597 | { | |
598 | char *end; | |
599 | size = strtoul (args, &end, 0); | |
600 | if (args == end) | |
8a3fe4f8 | 601 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
602 | #if 0 |
603 | /* Instead of explicitly capping the size of a packet to | |
604 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
605 | instead allowed to set the size to something arbitrarily | |
23860348 | 606 | large. */ |
11cf8741 | 607 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 608 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
609 | #endif |
610 | } | |
23860348 | 611 | /* Extra checks? */ |
11cf8741 JM |
612 | if (fixed_p && !config->fixed_p) |
613 | { | |
e2e0b3e5 AC |
614 | if (! query (_("The target may not be able to correctly handle a %s\n" |
615 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 616 | config->name, size)) |
8a3fe4f8 | 617 | error (_("Packet size not changed.")); |
11cf8741 | 618 | } |
23860348 | 619 | /* Update the config. */ |
11cf8741 JM |
620 | config->fixed_p = fixed_p; |
621 | config->size = size; | |
622 | } | |
623 | ||
624 | static void | |
625 | show_memory_packet_size (struct memory_packet_config *config) | |
626 | { | |
a3f17187 | 627 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 628 | if (config->fixed_p) |
a3f17187 | 629 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
630 | get_memory_packet_size (config)); |
631 | else | |
a3f17187 | 632 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
633 | get_memory_packet_size (config)); |
634 | } | |
635 | ||
636 | static struct memory_packet_config memory_write_packet_config = | |
637 | { | |
638 | "memory-write-packet-size", | |
639 | }; | |
640 | ||
641 | static void | |
642 | set_memory_write_packet_size (char *args, int from_tty) | |
643 | { | |
644 | set_memory_packet_size (args, &memory_write_packet_config); | |
645 | } | |
646 | ||
647 | static void | |
648 | show_memory_write_packet_size (char *args, int from_tty) | |
649 | { | |
650 | show_memory_packet_size (&memory_write_packet_config); | |
651 | } | |
652 | ||
653 | static long | |
654 | get_memory_write_packet_size (void) | |
655 | { | |
656 | return get_memory_packet_size (&memory_write_packet_config); | |
657 | } | |
658 | ||
659 | static struct memory_packet_config memory_read_packet_config = | |
660 | { | |
661 | "memory-read-packet-size", | |
662 | }; | |
663 | ||
664 | static void | |
665 | set_memory_read_packet_size (char *args, int from_tty) | |
666 | { | |
667 | set_memory_packet_size (args, &memory_read_packet_config); | |
668 | } | |
669 | ||
670 | static void | |
671 | show_memory_read_packet_size (char *args, int from_tty) | |
672 | { | |
673 | show_memory_packet_size (&memory_read_packet_config); | |
674 | } | |
675 | ||
676 | static long | |
677 | get_memory_read_packet_size (void) | |
678 | { | |
679 | long size = get_memory_packet_size (&memory_read_packet_config); | |
680 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
681 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
682 | increased beyond this. */ |
683 | if (size > get_remote_packet_size ()) | |
684 | size = get_remote_packet_size (); | |
11cf8741 JM |
685 | return size; |
686 | } | |
687 | ||
11cf8741 | 688 | \f |
5a2468f5 JM |
689 | /* Generic configuration support for packets the stub optionally |
690 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 691 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
692 | |
693 | enum packet_support | |
694 | { | |
695 | PACKET_SUPPORT_UNKNOWN = 0, | |
696 | PACKET_ENABLE, | |
697 | PACKET_DISABLE | |
698 | }; | |
699 | ||
5a2468f5 JM |
700 | struct packet_config |
701 | { | |
bb572ddd DJ |
702 | const char *name; |
703 | const char *title; | |
7f19b9a2 | 704 | enum auto_boolean detect; |
5a2468f5 JM |
705 | enum packet_support support; |
706 | }; | |
707 | ||
d471ea57 | 708 | /* Analyze a packet's return value and update the packet config |
23860348 | 709 | accordingly. */ |
d471ea57 AC |
710 | |
711 | enum packet_result | |
712 | { | |
713 | PACKET_ERROR, | |
714 | PACKET_OK, | |
715 | PACKET_UNKNOWN | |
716 | }; | |
717 | ||
5a2468f5 | 718 | static void |
d471ea57 | 719 | update_packet_config (struct packet_config *config) |
5a2468f5 | 720 | { |
d471ea57 AC |
721 | switch (config->detect) |
722 | { | |
7f19b9a2 | 723 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
724 | config->support = PACKET_ENABLE; |
725 | break; | |
7f19b9a2 | 726 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
727 | config->support = PACKET_DISABLE; |
728 | break; | |
7f19b9a2 | 729 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
730 | config->support = PACKET_SUPPORT_UNKNOWN; |
731 | break; | |
732 | } | |
5a2468f5 JM |
733 | } |
734 | ||
735 | static void | |
fba45db2 | 736 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
737 | { |
738 | char *support = "internal-error"; | |
739 | switch (config->support) | |
740 | { | |
741 | case PACKET_ENABLE: | |
742 | support = "enabled"; | |
743 | break; | |
744 | case PACKET_DISABLE: | |
745 | support = "disabled"; | |
746 | break; | |
747 | case PACKET_SUPPORT_UNKNOWN: | |
748 | support = "unknown"; | |
749 | break; | |
750 | } | |
751 | switch (config->detect) | |
752 | { | |
7f19b9a2 | 753 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
754 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
755 | config->name, support); | |
5a2468f5 | 756 | break; |
7f19b9a2 AC |
757 | case AUTO_BOOLEAN_TRUE: |
758 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
759 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
760 | config->name, support); | |
8e248173 | 761 | break; |
5a2468f5 JM |
762 | } |
763 | } | |
764 | ||
765 | static void | |
bb572ddd DJ |
766 | add_packet_config_cmd (struct packet_config *config, const char *name, |
767 | const char *title, int legacy) | |
d471ea57 | 768 | { |
5a2468f5 JM |
769 | char *set_doc; |
770 | char *show_doc; | |
d471ea57 | 771 | char *cmd_name; |
3ed07be4 | 772 | |
5a2468f5 JM |
773 | config->name = name; |
774 | config->title = title; | |
7f19b9a2 | 775 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 776 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
777 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
778 | name, title); | |
779 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
780 | name, title); | |
d471ea57 | 781 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 782 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 783 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 784 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
785 | set_remote_protocol_packet_cmd, |
786 | show_remote_protocol_packet_cmd, | |
787 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 788 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
789 | if (legacy) |
790 | { | |
791 | char *legacy_name; | |
b435e160 | 792 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 793 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 794 | &remote_set_cmdlist); |
d471ea57 | 795 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 796 | &remote_show_cmdlist); |
d471ea57 | 797 | } |
5a2468f5 JM |
798 | } |
799 | ||
d471ea57 | 800 | static enum packet_result |
a76d924d | 801 | packet_check_result (const char *buf) |
5a2468f5 | 802 | { |
d471ea57 | 803 | if (buf[0] != '\0') |
5a2468f5 | 804 | { |
d471ea57 | 805 | /* The stub recognized the packet request. Check that the |
23860348 | 806 | operation succeeded. */ |
a76d924d DJ |
807 | if (buf[0] == 'E' |
808 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
809 | && buf[3] == '\0') | |
810 | /* "Enn" - definitly an error. */ | |
811 | return PACKET_ERROR; | |
812 | ||
813 | /* Always treat "E." as an error. This will be used for | |
814 | more verbose error messages, such as E.memtypes. */ | |
815 | if (buf[0] == 'E' && buf[1] == '.') | |
816 | return PACKET_ERROR; | |
817 | ||
818 | /* The packet may or may not be OK. Just assume it is. */ | |
819 | return PACKET_OK; | |
820 | } | |
821 | else | |
822 | /* The stub does not support the packet. */ | |
823 | return PACKET_UNKNOWN; | |
824 | } | |
825 | ||
826 | static enum packet_result | |
827 | packet_ok (const char *buf, struct packet_config *config) | |
828 | { | |
829 | enum packet_result result; | |
830 | ||
831 | result = packet_check_result (buf); | |
832 | switch (result) | |
833 | { | |
834 | case PACKET_OK: | |
835 | case PACKET_ERROR: | |
836 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
837 | switch (config->support) |
838 | { | |
839 | case PACKET_SUPPORT_UNKNOWN: | |
840 | if (remote_debug) | |
841 | fprintf_unfiltered (gdb_stdlog, | |
842 | "Packet %s (%s) is supported\n", | |
843 | config->name, config->title); | |
844 | config->support = PACKET_ENABLE; | |
845 | break; | |
846 | case PACKET_DISABLE: | |
8e65ff28 | 847 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 848 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
849 | break; |
850 | case PACKET_ENABLE: | |
851 | break; | |
852 | } | |
a76d924d DJ |
853 | break; |
854 | case PACKET_UNKNOWN: | |
23860348 | 855 | /* The stub does not support the packet. */ |
d471ea57 AC |
856 | switch (config->support) |
857 | { | |
858 | case PACKET_ENABLE: | |
7f19b9a2 | 859 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 860 | /* If the stub previously indicated that the packet was |
23860348 | 861 | supported then there is a protocol error.. */ |
8a3fe4f8 | 862 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
863 | config->name, config->title); |
864 | else | |
23860348 | 865 | /* The user set it wrong. */ |
8a3fe4f8 | 866 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
867 | config->name, config->title); |
868 | break; | |
869 | case PACKET_SUPPORT_UNKNOWN: | |
870 | if (remote_debug) | |
871 | fprintf_unfiltered (gdb_stdlog, | |
872 | "Packet %s (%s) is NOT supported\n", | |
873 | config->name, config->title); | |
874 | config->support = PACKET_DISABLE; | |
875 | break; | |
876 | case PACKET_DISABLE: | |
877 | break; | |
878 | } | |
a76d924d | 879 | break; |
5a2468f5 | 880 | } |
a76d924d DJ |
881 | |
882 | return result; | |
5a2468f5 JM |
883 | } |
884 | ||
444abaca DJ |
885 | enum { |
886 | PACKET_vCont = 0, | |
887 | PACKET_X, | |
888 | PACKET_qSymbol, | |
889 | PACKET_P, | |
890 | PACKET_p, | |
891 | PACKET_Z0, | |
892 | PACKET_Z1, | |
893 | PACKET_Z2, | |
894 | PACKET_Z3, | |
895 | PACKET_Z4, | |
0876f84a | 896 | PACKET_qXfer_auxv, |
23181151 | 897 | PACKET_qXfer_features, |
fd79ecee | 898 | PACKET_qXfer_memory_map, |
444abaca | 899 | PACKET_qGetTLSAddr, |
be2a5f71 | 900 | PACKET_qSupported, |
89be2091 | 901 | PACKET_QPassSignals, |
444abaca DJ |
902 | PACKET_MAX |
903 | }; | |
506fb367 | 904 | |
444abaca | 905 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
906 | |
907 | static void | |
444abaca DJ |
908 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
909 | struct cmd_list_element *c) | |
dc8acb97 | 910 | { |
444abaca | 911 | struct packet_config *packet; |
dc8acb97 | 912 | |
444abaca DJ |
913 | for (packet = remote_protocol_packets; |
914 | packet < &remote_protocol_packets[PACKET_MAX]; | |
915 | packet++) | |
916 | { | |
917 | if (&packet->detect == c->var) | |
918 | { | |
919 | update_packet_config (packet); | |
920 | return; | |
921 | } | |
922 | } | |
923 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
924 | c->name); | |
dc8acb97 MS |
925 | } |
926 | ||
5a2468f5 | 927 | static void |
444abaca DJ |
928 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
929 | struct cmd_list_element *c, | |
930 | const char *value) | |
5a2468f5 | 931 | { |
444abaca | 932 | struct packet_config *packet; |
5a2468f5 | 933 | |
444abaca DJ |
934 | for (packet = remote_protocol_packets; |
935 | packet < &remote_protocol_packets[PACKET_MAX]; | |
936 | packet++) | |
937 | { | |
938 | if (&packet->detect == c->var) | |
939 | { | |
940 | show_packet_config_cmd (packet); | |
941 | return; | |
942 | } | |
943 | } | |
944 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
945 | c->name); | |
5a2468f5 JM |
946 | } |
947 | ||
d471ea57 AC |
948 | /* Should we try one of the 'Z' requests? */ |
949 | ||
950 | enum Z_packet_type | |
951 | { | |
952 | Z_PACKET_SOFTWARE_BP, | |
953 | Z_PACKET_HARDWARE_BP, | |
954 | Z_PACKET_WRITE_WP, | |
955 | Z_PACKET_READ_WP, | |
956 | Z_PACKET_ACCESS_WP, | |
957 | NR_Z_PACKET_TYPES | |
958 | }; | |
96baa820 | 959 | |
d471ea57 | 960 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 961 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 962 | |
7f19b9a2 | 963 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
964 | |
965 | static void | |
fba45db2 KB |
966 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
967 | struct cmd_list_element *c) | |
96baa820 | 968 | { |
d471ea57 AC |
969 | int i; |
970 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
971 | { | |
444abaca DJ |
972 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
973 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 974 | } |
96baa820 JM |
975 | } |
976 | ||
977 | static void | |
08546159 AC |
978 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
979 | struct cmd_list_element *c, | |
980 | const char *value) | |
96baa820 | 981 | { |
d471ea57 AC |
982 | int i; |
983 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
984 | { | |
444abaca | 985 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 986 | } |
96baa820 JM |
987 | } |
988 | ||
9d1f7ab2 MS |
989 | /* Should we try the 'ThreadInfo' query packet? |
990 | ||
991 | This variable (NOT available to the user: auto-detect only!) | |
992 | determines whether GDB will use the new, simpler "ThreadInfo" | |
993 | query or the older, more complex syntax for thread queries. | |
802188a7 | 994 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
995 | and set to false when the target fails to recognize it). */ |
996 | ||
997 | static int use_threadinfo_query; | |
998 | static int use_threadextra_query; | |
999 | ||
23860348 | 1000 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1001 | static struct async_signal_handler *sigint_remote_twice_token; |
1002 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1003 | |
c906108c SS |
1004 | /* These are pointers to hook functions that may be set in order to |
1005 | modify resume/wait behavior for a particular architecture. */ | |
1006 | ||
9a4105ab AC |
1007 | void (*deprecated_target_resume_hook) (void); |
1008 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
1009 | \f |
1010 | ||
c5aa993b | 1011 | |
c906108c SS |
1012 | /* These are the threads which we last sent to the remote system. |
1013 | -1 for all or -2 for not sent yet. */ | |
1014 | static int general_thread; | |
cce74817 | 1015 | static int continue_thread; |
c906108c SS |
1016 | |
1017 | /* Call this function as a result of | |
1018 | 1) A halt indication (T packet) containing a thread id | |
1019 | 2) A direct query of currthread | |
1020 | 3) Successful execution of set thread | |
1021 | */ | |
1022 | ||
1023 | static void | |
fba45db2 | 1024 | record_currthread (int currthread) |
c906108c | 1025 | { |
c906108c | 1026 | general_thread = currthread; |
cce74817 | 1027 | |
c906108c SS |
1028 | /* If this is a new thread, add it to GDB's thread list. |
1029 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1030 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1031 | { |
39f77062 | 1032 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1033 | ui_out_text (uiout, "[New "); |
39f77062 | 1034 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1035 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1036 | } |
c906108c SS |
1037 | } |
1038 | ||
89be2091 DJ |
1039 | static char *last_pass_packet; |
1040 | ||
1041 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1042 | it can simply pass through to the inferior without reporting. */ | |
1043 | ||
1044 | static void | |
1045 | remote_pass_signals (void) | |
1046 | { | |
1047 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1048 | { | |
1049 | char *pass_packet, *p; | |
1050 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1051 | int count = 0, i; | |
1052 | ||
1053 | gdb_assert (numsigs < 256); | |
1054 | for (i = 0; i < numsigs; i++) | |
1055 | { | |
1056 | if (signal_stop_state (i) == 0 | |
1057 | && signal_print_state (i) == 0 | |
1058 | && signal_pass_state (i) == 1) | |
1059 | count++; | |
1060 | } | |
1061 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1062 | strcpy (pass_packet, "QPassSignals:"); | |
1063 | p = pass_packet + strlen (pass_packet); | |
1064 | for (i = 0; i < numsigs; i++) | |
1065 | { | |
1066 | if (signal_stop_state (i) == 0 | |
1067 | && signal_print_state (i) == 0 | |
1068 | && signal_pass_state (i) == 1) | |
1069 | { | |
1070 | if (i >= 16) | |
1071 | *p++ = tohex (i >> 4); | |
1072 | *p++ = tohex (i & 15); | |
1073 | if (count) | |
1074 | *p++ = ';'; | |
1075 | else | |
1076 | break; | |
1077 | count--; | |
1078 | } | |
1079 | } | |
1080 | *p = 0; | |
1081 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1082 | { | |
1083 | struct remote_state *rs = get_remote_state (); | |
1084 | char *buf = rs->buf; | |
1085 | ||
1086 | putpkt (pass_packet); | |
1087 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1088 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1089 | if (last_pass_packet) | |
1090 | xfree (last_pass_packet); | |
1091 | last_pass_packet = pass_packet; | |
1092 | } | |
1093 | else | |
1094 | xfree (pass_packet); | |
1095 | } | |
1096 | } | |
1097 | ||
c906108c SS |
1098 | #define MAGIC_NULL_PID 42000 |
1099 | ||
1100 | static void | |
fba45db2 | 1101 | set_thread (int th, int gen) |
c906108c | 1102 | { |
d01949b6 | 1103 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1104 | char *buf = rs->buf; |
cce74817 | 1105 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1106 | |
1107 | if (state == th) | |
1108 | return; | |
1109 | ||
1110 | buf[0] = 'H'; | |
1111 | buf[1] = gen ? 'g' : 'c'; | |
1112 | if (th == MAGIC_NULL_PID) | |
1113 | { | |
1114 | buf[2] = '0'; | |
1115 | buf[3] = '\0'; | |
1116 | } | |
1117 | else if (th < 0) | |
ea9c271d | 1118 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 1119 | else |
ea9c271d | 1120 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 1121 | putpkt (buf); |
6d820c5c | 1122 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1123 | if (gen) |
c5aa993b | 1124 | general_thread = th; |
c906108c | 1125 | else |
cce74817 | 1126 | continue_thread = th; |
c906108c SS |
1127 | } |
1128 | \f | |
1129 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1130 | ||
1131 | static int | |
39f77062 | 1132 | remote_thread_alive (ptid_t ptid) |
c906108c | 1133 | { |
6d820c5c | 1134 | struct remote_state *rs = get_remote_state (); |
39f77062 | 1135 | int tid = PIDGET (ptid); |
c906108c | 1136 | |
cce74817 | 1137 | if (tid < 0) |
2e9f7625 | 1138 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1139 | else |
2e9f7625 DJ |
1140 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1141 | putpkt (rs->buf); | |
6d820c5c | 1142 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1143 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1144 | } |
1145 | ||
1146 | /* About these extended threadlist and threadinfo packets. They are | |
1147 | variable length packets but, the fields within them are often fixed | |
1148 | length. They are redundent enough to send over UDP as is the | |
1149 | remote protocol in general. There is a matching unit test module | |
1150 | in libstub. */ | |
1151 | ||
cce74817 JM |
1152 | #define OPAQUETHREADBYTES 8 |
1153 | ||
1154 | /* a 64 bit opaque identifier */ | |
1155 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1156 | ||
23860348 MS |
1157 | /* WARNING: This threadref data structure comes from the remote O.S., |
1158 | libstub protocol encoding, and remote.c. it is not particularly | |
1159 | changable. */ | |
cce74817 JM |
1160 | |
1161 | /* Right now, the internal structure is int. We want it to be bigger. | |
1162 | Plan to fix this. | |
c5aa993b | 1163 | */ |
cce74817 | 1164 | |
23860348 | 1165 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1166 | |
9d1f7ab2 | 1167 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1168 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1169 | |
1170 | struct gdb_ext_thread_info | |
c5aa993b | 1171 | { |
23860348 | 1172 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1173 | int active; /* Has state interesting to GDB? |
23860348 | 1174 | regs, stack. */ |
2bc416ba | 1175 | char display[256]; /* Brief state display, name, |
cedea757 | 1176 | blocked/suspended. */ |
23860348 | 1177 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1178 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1179 | whatever. */ |
c5aa993b | 1180 | }; |
cce74817 JM |
1181 | |
1182 | /* The volume of remote transfers can be limited by submitting | |
1183 | a mask containing bits specifying the desired information. | |
1184 | Use a union of these values as the 'selection' parameter to | |
1185 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1186 | */ |
cce74817 JM |
1187 | |
1188 | #define TAG_THREADID 1 | |
1189 | #define TAG_EXISTS 2 | |
1190 | #define TAG_DISPLAY 4 | |
1191 | #define TAG_THREADNAME 8 | |
c5aa993b | 1192 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1193 | |
23860348 | 1194 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1195 | |
b2dd6311 | 1196 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1197 | |
a14ed312 | 1198 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1199 | |
a14ed312 | 1200 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1201 | |
23860348 | 1202 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1203 | |
a14ed312 | 1204 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1205 | |
a14ed312 | 1206 | static char *pack_int (char *buf, int value); |
cce74817 | 1207 | |
a14ed312 | 1208 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1209 | |
a14ed312 | 1210 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1211 | |
23860348 | 1212 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1213 | |
23860348 | 1214 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1215 | |
23860348 | 1216 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1217 | |
23860348 | 1218 | static int threadref_to_int (threadref *ref); |
cce74817 | 1219 | |
23860348 | 1220 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1221 | |
23860348 | 1222 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1223 | |
2bc416ba | 1224 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1225 | threadref *id); |
cce74817 | 1226 | |
a14ed312 | 1227 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1228 | threadref *expectedref, |
a14ed312 KB |
1229 | struct gdb_ext_thread_info |
1230 | *info); | |
cce74817 JM |
1231 | |
1232 | ||
2bc416ba | 1233 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1234 | int fieldset, /*TAG mask */ |
a14ed312 | 1235 | struct gdb_ext_thread_info *info); |
cce74817 | 1236 | |
a14ed312 KB |
1237 | static char *pack_threadlist_request (char *pkt, int startflag, |
1238 | int threadcount, | |
23860348 | 1239 | threadref *nextthread); |
cce74817 | 1240 | |
a14ed312 KB |
1241 | static int parse_threadlist_response (char *pkt, |
1242 | int result_limit, | |
23860348 | 1243 | threadref *original_echo, |
2bc416ba | 1244 | threadref *resultlist, |
23860348 | 1245 | int *doneflag); |
cce74817 | 1246 | |
a14ed312 | 1247 | static int remote_get_threadlist (int startflag, |
23860348 | 1248 | threadref *nextthread, |
a14ed312 KB |
1249 | int result_limit, |
1250 | int *done, | |
2bc416ba | 1251 | int *result_count, |
23860348 | 1252 | threadref *threadlist); |
cce74817 | 1253 | |
23860348 | 1254 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1255 | |
a14ed312 KB |
1256 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1257 | void *context, int looplimit); | |
cce74817 | 1258 | |
23860348 | 1259 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1260 | |
23860348 | 1261 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1262 | |
1263 | static const char hexchars[] = "0123456789abcdef"; | |
1264 | ||
1265 | static int | |
fba45db2 | 1266 | ishex (int ch, int *val) |
c906108c SS |
1267 | { |
1268 | if ((ch >= 'a') && (ch <= 'f')) | |
1269 | { | |
1270 | *val = ch - 'a' + 10; | |
1271 | return 1; | |
1272 | } | |
1273 | if ((ch >= 'A') && (ch <= 'F')) | |
1274 | { | |
1275 | *val = ch - 'A' + 10; | |
1276 | return 1; | |
1277 | } | |
1278 | if ((ch >= '0') && (ch <= '9')) | |
1279 | { | |
1280 | *val = ch - '0'; | |
1281 | return 1; | |
1282 | } | |
1283 | return 0; | |
1284 | } | |
1285 | ||
1286 | static int | |
fba45db2 | 1287 | stubhex (int ch) |
c906108c SS |
1288 | { |
1289 | if (ch >= 'a' && ch <= 'f') | |
1290 | return ch - 'a' + 10; | |
1291 | if (ch >= '0' && ch <= '9') | |
1292 | return ch - '0'; | |
1293 | if (ch >= 'A' && ch <= 'F') | |
1294 | return ch - 'A' + 10; | |
1295 | return -1; | |
1296 | } | |
1297 | ||
1298 | static int | |
fba45db2 | 1299 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1300 | { |
1301 | int nibble; | |
1302 | int retval = 0; | |
1303 | ||
1304 | while (fieldlength) | |
1305 | { | |
1306 | nibble = stubhex (*buff++); | |
1307 | retval |= nibble; | |
1308 | fieldlength--; | |
1309 | if (fieldlength) | |
1310 | retval = retval << 4; | |
1311 | } | |
1312 | return retval; | |
1313 | } | |
1314 | ||
1315 | char * | |
fba45db2 | 1316 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1317 | ULONGEST *result) |
c906108c SS |
1318 | { |
1319 | int nibble; | |
d49c44d5 | 1320 | ULONGEST retval = 0; |
c906108c SS |
1321 | |
1322 | while (ishex (*buff, &nibble)) | |
1323 | { | |
1324 | buff++; | |
1325 | retval = retval << 4; | |
1326 | retval |= nibble & 0x0f; | |
1327 | } | |
1328 | *result = retval; | |
1329 | return buff; | |
1330 | } | |
1331 | ||
1332 | static char * | |
fba45db2 | 1333 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1334 | { |
1335 | ishex (*buf++, val); | |
1336 | return buf; | |
1337 | } | |
1338 | ||
1339 | static char * | |
fba45db2 | 1340 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1341 | { |
1342 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1343 | return buf; | |
1344 | } | |
1345 | ||
1346 | static char * | |
fba45db2 | 1347 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1348 | { |
1349 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1350 | *pkt++ = hexchars[(byte & 0xf)]; | |
1351 | return pkt; | |
1352 | } | |
1353 | ||
1354 | static char * | |
fba45db2 | 1355 | unpack_byte (char *buf, int *value) |
c906108c SS |
1356 | { |
1357 | *value = stub_unpack_int (buf, 2); | |
1358 | return buf + 2; | |
1359 | } | |
1360 | ||
1361 | static char * | |
fba45db2 | 1362 | pack_int (char *buf, int value) |
c906108c SS |
1363 | { |
1364 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1365 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1366 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1367 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1368 | return buf; | |
1369 | } | |
1370 | ||
1371 | static char * | |
fba45db2 | 1372 | unpack_int (char *buf, int *value) |
c906108c SS |
1373 | { |
1374 | *value = stub_unpack_int (buf, 8); | |
1375 | return buf + 8; | |
1376 | } | |
1377 | ||
23860348 | 1378 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1379 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1380 | |
1381 | static char * | |
fba45db2 | 1382 | pack_string (char *pkt, char *string) |
c906108c SS |
1383 | { |
1384 | char ch; | |
1385 | int len; | |
1386 | ||
1387 | len = strlen (string); | |
1388 | if (len > 200) | |
23860348 | 1389 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1390 | pkt = pack_hex_byte (pkt, len); |
1391 | while (len-- > 0) | |
1392 | { | |
1393 | ch = *string++; | |
1394 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1395 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1396 | *pkt++ = ch; |
1397 | } | |
1398 | return pkt; | |
1399 | } | |
1400 | #endif /* 0 (unused) */ | |
1401 | ||
1402 | static char * | |
fba45db2 | 1403 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1404 | { |
1405 | while (length--) | |
1406 | *dest++ = *src++; | |
1407 | *dest = '\0'; | |
1408 | return src; | |
1409 | } | |
1410 | ||
1411 | static char * | |
fba45db2 | 1412 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1413 | { |
1414 | char *limit; | |
1415 | unsigned char *altid; | |
1416 | ||
1417 | altid = (unsigned char *) id; | |
1418 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1419 | while (pkt < limit) | |
1420 | pkt = pack_hex_byte (pkt, *altid++); | |
1421 | return pkt; | |
1422 | } | |
1423 | ||
1424 | ||
1425 | static char * | |
fba45db2 | 1426 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1427 | { |
1428 | char *altref; | |
1429 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1430 | int x, y; | |
1431 | ||
1432 | altref = (char *) id; | |
1433 | ||
1434 | while (inbuf < limit) | |
1435 | { | |
1436 | x = stubhex (*inbuf++); | |
1437 | y = stubhex (*inbuf++); | |
1438 | *altref++ = (x << 4) | y; | |
1439 | } | |
1440 | return inbuf; | |
1441 | } | |
1442 | ||
1443 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1444 | ints. This is due to a mismatch of specifications. We would like | |
1445 | to use 64bit thread references internally. This is an adapter | |
1446 | function. */ | |
1447 | ||
1448 | void | |
fba45db2 | 1449 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1450 | { |
1451 | unsigned char *scan; | |
1452 | ||
1453 | scan = (unsigned char *) id; | |
1454 | { | |
1455 | int i = 4; | |
1456 | while (i--) | |
1457 | *scan++ = 0; | |
1458 | } | |
1459 | *scan++ = (value >> 24) & 0xff; | |
1460 | *scan++ = (value >> 16) & 0xff; | |
1461 | *scan++ = (value >> 8) & 0xff; | |
1462 | *scan++ = (value & 0xff); | |
1463 | } | |
1464 | ||
1465 | static int | |
fba45db2 | 1466 | threadref_to_int (threadref *ref) |
c906108c SS |
1467 | { |
1468 | int i, value = 0; | |
1469 | unsigned char *scan; | |
1470 | ||
cfd77fa1 | 1471 | scan = *ref; |
c906108c SS |
1472 | scan += 4; |
1473 | i = 4; | |
1474 | while (i-- > 0) | |
1475 | value = (value << 8) | ((*scan++) & 0xff); | |
1476 | return value; | |
1477 | } | |
1478 | ||
1479 | static void | |
fba45db2 | 1480 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1481 | { |
1482 | int i; | |
1483 | unsigned char *csrc, *cdest; | |
1484 | ||
1485 | csrc = (unsigned char *) src; | |
1486 | cdest = (unsigned char *) dest; | |
1487 | i = 8; | |
1488 | while (i--) | |
1489 | *cdest++ = *csrc++; | |
1490 | } | |
1491 | ||
1492 | static int | |
fba45db2 | 1493 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1494 | { |
23860348 | 1495 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1496 | #if 0 |
1497 | unsigned char *srcp, *destp; | |
1498 | int i, result; | |
1499 | srcp = (char *) src; | |
1500 | destp = (char *) dest; | |
1501 | ||
1502 | result = 1; | |
1503 | while (i-- > 0) | |
1504 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1505 | return result; | |
1506 | #endif | |
1507 | return 1; | |
1508 | } | |
1509 | ||
1510 | /* | |
c5aa993b JM |
1511 | threadid:1, # always request threadid |
1512 | context_exists:2, | |
1513 | display:4, | |
1514 | unique_name:8, | |
1515 | more_display:16 | |
1516 | */ | |
c906108c SS |
1517 | |
1518 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1519 | ||
1520 | static char * | |
fba45db2 | 1521 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1522 | { |
23860348 MS |
1523 | *pkt++ = 'q'; /* Info Query */ |
1524 | *pkt++ = 'P'; /* process or thread info */ | |
1525 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1526 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1527 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1528 | return pkt; |
1529 | } | |
1530 | ||
23860348 | 1531 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1532 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1533 | add more fields as time goes by. */ |
c906108c | 1534 | |
23860348 | 1535 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1536 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1537 | fetch registers and its stack? */ |
c5aa993b | 1538 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1539 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1540 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1541 | the process. */ |
c906108c SS |
1542 | |
1543 | static int | |
fba45db2 KB |
1544 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1545 | struct gdb_ext_thread_info *info) | |
c906108c | 1546 | { |
d01949b6 | 1547 | struct remote_state *rs = get_remote_state (); |
c906108c | 1548 | int mask, length; |
cfd77fa1 | 1549 | int tag; |
c906108c | 1550 | threadref ref; |
6d820c5c | 1551 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1552 | int retval = 1; |
1553 | ||
23860348 | 1554 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1555 | info->active = 0; |
1556 | info->display[0] = '\0'; | |
1557 | info->shortname[0] = '\0'; | |
1558 | info->more_display[0] = '\0'; | |
1559 | ||
23860348 MS |
1560 | /* Assume the characters indicating the packet type have been |
1561 | stripped. */ | |
c906108c SS |
1562 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1563 | pkt = unpack_threadid (pkt, &ref); | |
1564 | ||
1565 | if (mask == 0) | |
8a3fe4f8 | 1566 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1567 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1568 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1569 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1570 | return 0; |
1571 | } | |
1572 | copy_threadref (&info->threadid, &ref); | |
1573 | ||
23860348 | 1574 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1575 | |
23860348 MS |
1576 | /* Packets are terminated with nulls. */ |
1577 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1578 | { |
1579 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1580 | pkt = unpack_byte (pkt, &length); /* length */ |
1581 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1582 | { |
8a3fe4f8 | 1583 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1584 | retval = 0; |
1585 | break; | |
1586 | } | |
1587 | if (tag == TAG_THREADID) | |
1588 | { | |
1589 | if (length != 16) | |
1590 | { | |
8a3fe4f8 | 1591 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1592 | retval = 0; |
1593 | break; | |
1594 | } | |
1595 | pkt = unpack_threadid (pkt, &ref); | |
1596 | mask = mask & ~TAG_THREADID; | |
1597 | continue; | |
1598 | } | |
1599 | if (tag == TAG_EXISTS) | |
1600 | { | |
1601 | info->active = stub_unpack_int (pkt, length); | |
1602 | pkt += length; | |
1603 | mask = mask & ~(TAG_EXISTS); | |
1604 | if (length > 8) | |
1605 | { | |
8a3fe4f8 | 1606 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1607 | retval = 0; |
1608 | break; | |
1609 | } | |
1610 | continue; | |
1611 | } | |
1612 | if (tag == TAG_THREADNAME) | |
1613 | { | |
1614 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1615 | mask = mask & ~TAG_THREADNAME; | |
1616 | continue; | |
1617 | } | |
1618 | if (tag == TAG_DISPLAY) | |
1619 | { | |
1620 | pkt = unpack_string (pkt, &info->display[0], length); | |
1621 | mask = mask & ~TAG_DISPLAY; | |
1622 | continue; | |
1623 | } | |
1624 | if (tag == TAG_MOREDISPLAY) | |
1625 | { | |
1626 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1627 | mask = mask & ~TAG_MOREDISPLAY; | |
1628 | continue; | |
1629 | } | |
8a3fe4f8 | 1630 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1631 | break; /* Not a tag we know about. */ |
c906108c SS |
1632 | } |
1633 | return retval; | |
1634 | } | |
1635 | ||
1636 | static int | |
fba45db2 KB |
1637 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1638 | struct gdb_ext_thread_info *info) | |
c906108c | 1639 | { |
d01949b6 | 1640 | struct remote_state *rs = get_remote_state (); |
c906108c | 1641 | int result; |
c906108c | 1642 | |
2e9f7625 DJ |
1643 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1644 | putpkt (rs->buf); | |
6d820c5c | 1645 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1646 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1647 | threadid, info); |
c906108c SS |
1648 | return result; |
1649 | } | |
1650 | ||
c906108c SS |
1651 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1652 | ||
1653 | static char * | |
fba45db2 KB |
1654 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1655 | threadref *nextthread) | |
c906108c SS |
1656 | { |
1657 | *pkt++ = 'q'; /* info query packet */ | |
1658 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1659 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1660 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1661 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1662 | *pkt = '\0'; | |
1663 | return pkt; | |
1664 | } | |
1665 | ||
1666 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1667 | ||
1668 | static int | |
fba45db2 KB |
1669 | parse_threadlist_response (char *pkt, int result_limit, |
1670 | threadref *original_echo, threadref *resultlist, | |
1671 | int *doneflag) | |
c906108c | 1672 | { |
d01949b6 | 1673 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1674 | char *limit; |
1675 | int count, resultcount, done; | |
1676 | ||
1677 | resultcount = 0; | |
1678 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1679 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1680 | /* done parse past here */ |
c906108c SS |
1681 | pkt = unpack_byte (pkt, &count); /* count field */ |
1682 | pkt = unpack_nibble (pkt, &done); | |
1683 | /* The first threadid is the argument threadid. */ | |
1684 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1685 | while ((count-- > 0) && (pkt < limit)) | |
1686 | { | |
1687 | pkt = unpack_threadid (pkt, resultlist++); | |
1688 | if (resultcount++ >= result_limit) | |
1689 | break; | |
1690 | } | |
1691 | if (doneflag) | |
1692 | *doneflag = done; | |
1693 | return resultcount; | |
1694 | } | |
1695 | ||
1696 | static int | |
fba45db2 KB |
1697 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1698 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1699 | { |
d01949b6 | 1700 | struct remote_state *rs = get_remote_state (); |
c906108c | 1701 | static threadref echo_nextthread; |
c906108c SS |
1702 | int result = 1; |
1703 | ||
23860348 | 1704 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1705 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1706 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1707 | |
6d820c5c DJ |
1708 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1709 | putpkt (rs->buf); | |
1710 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1711 | |
1712 | *result_count = | |
6d820c5c | 1713 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1714 | threadlist, done); |
1715 | ||
1716 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1717 | { | |
23860348 MS |
1718 | /* FIXME: This is a good reason to drop the packet. */ |
1719 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1720 | /* Possabilities : |
1721 | retransmit immediatly - race conditions | |
1722 | retransmit after timeout - yes | |
1723 | exit | |
1724 | wait for packet, then exit | |
1725 | */ | |
8a3fe4f8 | 1726 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1727 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1728 | } |
1729 | if (*result_count <= 0) | |
1730 | { | |
1731 | if (*done != 1) | |
1732 | { | |
8a3fe4f8 | 1733 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1734 | result = 0; |
1735 | } | |
1736 | return result; /* break; */ | |
1737 | } | |
1738 | if (*result_count > result_limit) | |
1739 | { | |
1740 | *result_count = 0; | |
8a3fe4f8 | 1741 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1742 | return 0; |
1743 | } | |
1744 | return result; | |
1745 | } | |
1746 | ||
23860348 MS |
1747 | /* This is the interface between remote and threads, remotes upper |
1748 | interface. */ | |
c906108c SS |
1749 | |
1750 | /* remote_find_new_threads retrieves the thread list and for each | |
1751 | thread in the list, looks up the thread in GDB's internal list, | |
1752 | ading the thread if it does not already exist. This involves | |
1753 | getting partial thread lists from the remote target so, polling the | |
1754 | quit_flag is required. */ | |
1755 | ||
1756 | ||
23860348 | 1757 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1758 | |
1759 | #define MAXTHREADLISTRESULTS 32 | |
1760 | ||
1761 | static int | |
fba45db2 KB |
1762 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1763 | int looplimit) | |
c906108c SS |
1764 | { |
1765 | int done, i, result_count; | |
1766 | int startflag = 1; | |
1767 | int result = 1; | |
1768 | int loopcount = 0; | |
1769 | static threadref nextthread; | |
1770 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1771 | ||
1772 | done = 0; | |
1773 | while (!done) | |
1774 | { | |
1775 | if (loopcount++ > looplimit) | |
1776 | { | |
1777 | result = 0; | |
8a3fe4f8 | 1778 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1779 | break; |
1780 | } | |
1781 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1782 | &done, &result_count, resultthreadlist)) | |
1783 | { | |
1784 | result = 0; | |
1785 | break; | |
1786 | } | |
23860348 | 1787 | /* Clear for later iterations. */ |
c906108c SS |
1788 | startflag = 0; |
1789 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1790 | if (result_count >= 1) | |
1791 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1792 | i = 0; | |
1793 | while (result_count--) | |
1794 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1795 | break; | |
1796 | } | |
1797 | return result; | |
1798 | } | |
1799 | ||
1800 | static int | |
fba45db2 | 1801 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1802 | { |
39f77062 | 1803 | ptid_t ptid; |
c906108c | 1804 | |
39f77062 KB |
1805 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1806 | ||
1807 | if (!in_thread_list (ptid)) | |
1808 | add_thread (ptid); | |
c906108c SS |
1809 | return 1; /* continue iterator */ |
1810 | } | |
1811 | ||
1812 | #define CRAZY_MAX_THREADS 1000 | |
1813 | ||
39f77062 KB |
1814 | static ptid_t |
1815 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1816 | { |
d01949b6 | 1817 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1818 | |
1819 | putpkt ("qC"); | |
6d820c5c | 1820 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1821 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c273b20f JB |
1822 | /* Use strtoul here, so we'll correctly parse values whose highest |
1823 | bit is set. The protocol carries them as a simple series of | |
1824 | hex digits; in the absence of a sign, strtol will see such | |
1825 | values as positive numbers out of range for signed 'long', and | |
1826 | return LONG_MAX to indicate an overflow. */ | |
2e9f7625 | 1827 | return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16)); |
c906108c SS |
1828 | else |
1829 | return oldpid; | |
1830 | } | |
1831 | ||
802188a7 RM |
1832 | /* Find new threads for info threads command. |
1833 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1834 | */ |
cce74817 JM |
1835 | |
1836 | static void | |
fba45db2 | 1837 | remote_find_new_threads (void) |
c906108c | 1838 | { |
c5aa993b JM |
1839 | remote_threadlist_iterator (remote_newthread_step, 0, |
1840 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1841 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1842 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1843 | } |
1844 | ||
9d1f7ab2 MS |
1845 | /* |
1846 | * Find all threads for info threads command. | |
1847 | * Uses new thread protocol contributed by Cisco. | |
1848 | * Falls back and attempts to use the older method (above) | |
1849 | * if the target doesn't respond to the new method. | |
1850 | */ | |
1851 | ||
0f71a2f6 JM |
1852 | static void |
1853 | remote_threads_info (void) | |
1854 | { | |
d01949b6 | 1855 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1856 | char *bufp; |
0f71a2f6 JM |
1857 | int tid; |
1858 | ||
1859 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1860 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1861 | |
9d1f7ab2 MS |
1862 | if (use_threadinfo_query) |
1863 | { | |
1864 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1865 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1866 | bufp = rs->buf; |
9d1f7ab2 | 1867 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1868 | { |
9d1f7ab2 MS |
1869 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1870 | { | |
1871 | do | |
1872 | { | |
c273b20f JB |
1873 | /* Use strtoul here, so we'll correctly parse values |
1874 | whose highest bit is set. The protocol carries | |
1875 | them as a simple series of hex digits; in the | |
1876 | absence of a sign, strtol will see such values as | |
1877 | positive numbers out of range for signed 'long', | |
1878 | and return LONG_MAX to indicate an overflow. */ | |
1879 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1880 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1881 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1882 | } |
1883 | while (*bufp++ == ','); /* comma-separated list */ | |
1884 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1885 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1886 | bufp = rs->buf; |
9d1f7ab2 MS |
1887 | } |
1888 | return; /* done */ | |
1889 | } | |
1890 | } | |
1891 | ||
23860348 | 1892 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1893 | use_threadinfo_query = 0; |
1894 | remote_find_new_threads (); | |
1895 | return; | |
1896 | } | |
1897 | ||
802188a7 | 1898 | /* |
9d1f7ab2 MS |
1899 | * Collect a descriptive string about the given thread. |
1900 | * The target may say anything it wants to about the thread | |
1901 | * (typically info about its blocked / runnable state, name, etc.). | |
1902 | * This string will appear in the info threads display. | |
802188a7 | 1903 | * |
9d1f7ab2 MS |
1904 | * Optional: targets are not required to implement this function. |
1905 | */ | |
1906 | ||
1907 | static char * | |
1908 | remote_threads_extra_info (struct thread_info *tp) | |
1909 | { | |
d01949b6 | 1910 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1911 | int result; |
1912 | int set; | |
1913 | threadref id; | |
1914 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1915 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1916 | int n = 0; /* position in display_buf */ |
1917 | ||
1918 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1919 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1920 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1921 | |
1922 | if (use_threadextra_query) | |
1923 | { | |
2e9f7625 | 1924 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1925 | PIDGET (tp->ptid)); |
2e9f7625 | 1926 | putpkt (rs->buf); |
6d820c5c | 1927 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1928 | if (rs->buf[0] != 0) |
9d1f7ab2 | 1929 | { |
2e9f7625 DJ |
1930 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
1931 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 1932 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1933 | return display_buf; |
1934 | } | |
0f71a2f6 | 1935 | } |
9d1f7ab2 MS |
1936 | |
1937 | /* If the above query fails, fall back to the old method. */ | |
1938 | use_threadextra_query = 0; | |
1939 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1940 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1941 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1942 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1943 | if (threadinfo.active) | |
0f71a2f6 | 1944 | { |
9d1f7ab2 | 1945 | if (*threadinfo.shortname) |
2bc416ba | 1946 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 1947 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 1948 | if (*threadinfo.display) |
2bc416ba | 1949 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1950 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 1951 | if (*threadinfo.more_display) |
2bc416ba | 1952 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1953 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
1954 | |
1955 | if (n > 0) | |
c5aa993b | 1956 | { |
23860348 | 1957 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1958 | if (',' == display_buf[n-1]) |
1959 | display_buf[n-1] = ' '; | |
1960 | return display_buf; | |
c5aa993b | 1961 | } |
0f71a2f6 | 1962 | } |
9d1f7ab2 | 1963 | return NULL; |
0f71a2f6 | 1964 | } |
c906108c | 1965 | \f |
c5aa993b | 1966 | |
24b06219 | 1967 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1968 | |
1969 | static void | |
fba45db2 | 1970 | extended_remote_restart (void) |
c906108c | 1971 | { |
d01949b6 | 1972 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1973 | |
1974 | /* Send the restart command; for reasons I don't understand the | |
1975 | remote side really expects a number after the "R". */ | |
ea9c271d | 1976 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1977 | putpkt (rs->buf); |
c906108c | 1978 | |
ad9a8f3f | 1979 | remote_fileio_reset (); |
2bc416ba | 1980 | |
c906108c SS |
1981 | /* Now query for status so this looks just like we restarted |
1982 | gdbserver from scratch. */ | |
1983 | putpkt ("?"); | |
01d3a6ce | 1984 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1985 | } |
1986 | \f | |
1987 | /* Clean up connection to a remote debugger. */ | |
1988 | ||
c906108c | 1989 | static void |
fba45db2 | 1990 | remote_close (int quitting) |
c906108c SS |
1991 | { |
1992 | if (remote_desc) | |
2cd58942 | 1993 | serial_close (remote_desc); |
c906108c SS |
1994 | remote_desc = NULL; |
1995 | } | |
1996 | ||
23860348 | 1997 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1998 | |
1999 | static void | |
fba45db2 | 2000 | get_offsets (void) |
c906108c | 2001 | { |
d01949b6 | 2002 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2003 | char *buf; |
085dd6e6 | 2004 | char *ptr; |
c906108c SS |
2005 | int lose; |
2006 | CORE_ADDR text_addr, data_addr, bss_addr; | |
2007 | struct section_offsets *offs; | |
2008 | ||
2009 | putpkt ("qOffsets"); | |
6d820c5c | 2010 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2011 | buf = rs->buf; |
c906108c SS |
2012 | |
2013 | if (buf[0] == '\000') | |
2014 | return; /* Return silently. Stub doesn't support | |
23860348 | 2015 | this command. */ |
c906108c SS |
2016 | if (buf[0] == 'E') |
2017 | { | |
8a3fe4f8 | 2018 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2019 | return; |
2020 | } | |
2021 | ||
2022 | /* Pick up each field in turn. This used to be done with scanf, but | |
2023 | scanf will make trouble if CORE_ADDR size doesn't match | |
2024 | conversion directives correctly. The following code will work | |
2025 | with any size of CORE_ADDR. */ | |
2026 | text_addr = data_addr = bss_addr = 0; | |
2027 | ptr = buf; | |
2028 | lose = 0; | |
2029 | ||
2030 | if (strncmp (ptr, "Text=", 5) == 0) | |
2031 | { | |
2032 | ptr += 5; | |
2033 | /* Don't use strtol, could lose on big values. */ | |
2034 | while (*ptr && *ptr != ';') | |
2035 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
2036 | } | |
2037 | else | |
2038 | lose = 1; | |
2039 | ||
2040 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
2041 | { | |
2042 | ptr += 6; | |
2043 | while (*ptr && *ptr != ';') | |
2044 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2045 | } | |
2046 | else | |
2047 | lose = 1; | |
2048 | ||
2049 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2050 | { | |
2051 | ptr += 5; | |
2052 | while (*ptr && *ptr != ';') | |
2053 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
2054 | } | |
2055 | else | |
2056 | lose = 1; | |
2057 | ||
2058 | if (lose) | |
8a3fe4f8 | 2059 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
2060 | |
2061 | if (symfile_objfile == NULL) | |
2062 | return; | |
2063 | ||
802188a7 | 2064 | offs = ((struct section_offsets *) |
a39a16c4 | 2065 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2066 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2067 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2068 | |
a4c8257b | 2069 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
2070 | |
2071 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2072 | because that's what nlmconv does now. The real solution requires changes | |
2073 | to the stub and remote.c that I don't have time to do right now. */ | |
2074 | ||
a4c8257b EZ |
2075 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
2076 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
2077 | |
2078 | objfile_relocate (symfile_objfile, offs); | |
2079 | } | |
2080 | ||
8621d6a9 | 2081 | /* Stub for catch_exception. */ |
0f71a2f6 | 2082 | |
9cbc821d | 2083 | static void |
8621d6a9 | 2084 | remote_start_remote (struct ui_out *uiout, void *from_tty_p) |
c906108c | 2085 | { |
8621d6a9 DJ |
2086 | int from_tty = * (int *) from_tty_p; |
2087 | ||
23860348 | 2088 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2089 | |
2090 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2091 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2092 | |
2093 | /* Let the stub know that we want it to return the thread. */ | |
2094 | set_thread (-1, 0); | |
2095 | ||
39f77062 | 2096 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2097 | |
23860348 | 2098 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2099 | |
23860348 | 2100 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2101 | immediate_quit--; |
c906108c | 2102 | |
8621d6a9 | 2103 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
c906108c SS |
2104 | } |
2105 | ||
2106 | /* Open a connection to a remote debugger. | |
2107 | NAME is the filename used for communication. */ | |
2108 | ||
2109 | static void | |
fba45db2 | 2110 | remote_open (char *name, int from_tty) |
c906108c | 2111 | { |
92d1e331 | 2112 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2113 | } |
2114 | ||
23860348 | 2115 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2116 | static void |
fba45db2 | 2117 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2118 | { |
92d1e331 | 2119 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2120 | } |
2121 | ||
c906108c SS |
2122 | /* Open a connection to a remote debugger using the extended |
2123 | remote gdb protocol. NAME is the filename used for communication. */ | |
2124 | ||
2125 | static void | |
fba45db2 | 2126 | extended_remote_open (char *name, int from_tty) |
c906108c | 2127 | { |
92d1e331 DJ |
2128 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2129 | 0 /* async_p */); | |
c906108c SS |
2130 | } |
2131 | ||
23860348 | 2132 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2133 | static void |
fba45db2 | 2134 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2135 | { |
92d1e331 DJ |
2136 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2137 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2138 | } |
2139 | ||
c906108c SS |
2140 | /* Generic code for opening a connection to a remote target. */ |
2141 | ||
d471ea57 AC |
2142 | static void |
2143 | init_all_packet_configs (void) | |
2144 | { | |
2145 | int i; | |
444abaca DJ |
2146 | for (i = 0; i < PACKET_MAX; i++) |
2147 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2148 | } |
2149 | ||
23860348 | 2150 | /* Symbol look-up. */ |
dc8acb97 MS |
2151 | |
2152 | static void | |
2153 | remote_check_symbols (struct objfile *objfile) | |
2154 | { | |
d01949b6 | 2155 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2156 | char *msg, *reply, *tmp; |
2157 | struct minimal_symbol *sym; | |
2158 | int end; | |
2159 | ||
444abaca | 2160 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2161 | return; |
2162 | ||
6d820c5c DJ |
2163 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2164 | because we need both at the same time. */ | |
ea9c271d | 2165 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2166 | |
23860348 | 2167 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2168 | |
2169 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2170 | getpkt (&rs->buf, &rs->buf_size, 0); |
2171 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2172 | reply = rs->buf; |
dc8acb97 MS |
2173 | |
2174 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2175 | { | |
2176 | tmp = &reply[8]; | |
cfd77fa1 | 2177 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2178 | msg[end] = '\0'; |
2179 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2180 | if (sym == NULL) | |
ea9c271d | 2181 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2182 | else |
ea9c271d | 2183 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", |
ecbc58df WZ |
2184 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2185 | &reply[8]); | |
dc8acb97 | 2186 | putpkt (msg); |
6d820c5c | 2187 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2188 | reply = rs->buf; |
dc8acb97 MS |
2189 | } |
2190 | } | |
2191 | ||
9db8d71f DJ |
2192 | static struct serial * |
2193 | remote_serial_open (char *name) | |
2194 | { | |
2195 | static int udp_warning = 0; | |
2196 | ||
2197 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2198 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2199 | serial connection is reliable and not the serial connection promising | |
2200 | to be. */ | |
2201 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2202 | { | |
8a3fe4f8 AC |
2203 | warning (_("\ |
2204 | The remote protocol may be unreliable over UDP.\n\ | |
2205 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2206 | udp_warning = 1; |
2207 | } | |
2208 | ||
2209 | return serial_open (name); | |
2210 | } | |
2211 | ||
be2a5f71 DJ |
2212 | /* This type describes each known response to the qSupported |
2213 | packet. */ | |
2214 | struct protocol_feature | |
2215 | { | |
2216 | /* The name of this protocol feature. */ | |
2217 | const char *name; | |
2218 | ||
2219 | /* The default for this protocol feature. */ | |
2220 | enum packet_support default_support; | |
2221 | ||
2222 | /* The function to call when this feature is reported, or after | |
2223 | qSupported processing if the feature is not supported. | |
2224 | The first argument points to this structure. The second | |
2225 | argument indicates whether the packet requested support be | |
2226 | enabled, disabled, or probed (or the default, if this function | |
2227 | is being called at the end of processing and this feature was | |
2228 | not reported). The third argument may be NULL; if not NULL, it | |
2229 | is a NUL-terminated string taken from the packet following | |
2230 | this feature's name and an equals sign. */ | |
2231 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2232 | const char *); | |
2233 | ||
2234 | /* The corresponding packet for this feature. Only used if | |
2235 | FUNC is remote_supported_packet. */ | |
2236 | int packet; | |
2237 | }; | |
2238 | ||
be2a5f71 DJ |
2239 | static void |
2240 | remote_supported_packet (const struct protocol_feature *feature, | |
2241 | enum packet_support support, | |
2242 | const char *argument) | |
2243 | { | |
2244 | if (argument) | |
2245 | { | |
2246 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2247 | " \"%s\"."), feature->name); | |
2248 | return; | |
2249 | } | |
2250 | ||
2251 | if (remote_protocol_packets[feature->packet].support | |
2252 | == PACKET_SUPPORT_UNKNOWN) | |
2253 | remote_protocol_packets[feature->packet].support = support; | |
2254 | } | |
be2a5f71 DJ |
2255 | |
2256 | static void | |
2257 | remote_packet_size (const struct protocol_feature *feature, | |
2258 | enum packet_support support, const char *value) | |
2259 | { | |
2260 | struct remote_state *rs = get_remote_state (); | |
2261 | ||
2262 | int packet_size; | |
2263 | char *value_end; | |
2264 | ||
2265 | if (support != PACKET_ENABLE) | |
2266 | return; | |
2267 | ||
2268 | if (value == NULL || *value == '\0') | |
2269 | { | |
2270 | warning (_("Remote target reported \"%s\" without a size."), | |
2271 | feature->name); | |
2272 | return; | |
2273 | } | |
2274 | ||
2275 | errno = 0; | |
2276 | packet_size = strtol (value, &value_end, 16); | |
2277 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2278 | { | |
2279 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2280 | feature->name, value); | |
2281 | return; | |
2282 | } | |
2283 | ||
2284 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2285 | { | |
2286 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2287 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2288 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2289 | } | |
2290 | ||
2291 | /* Record the new maximum packet size. */ | |
2292 | rs->explicit_packet_size = packet_size; | |
2293 | } | |
2294 | ||
2295 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2296 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2297 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 2298 | PACKET_qXfer_auxv }, |
23181151 DJ |
2299 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
2300 | PACKET_qXfer_features }, | |
fd79ecee | 2301 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 DJ |
2302 | PACKET_qXfer_memory_map }, |
2303 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, | |
2304 | PACKET_QPassSignals }, | |
be2a5f71 DJ |
2305 | }; |
2306 | ||
2307 | static void | |
2308 | remote_query_supported (void) | |
2309 | { | |
2310 | struct remote_state *rs = get_remote_state (); | |
2311 | char *next; | |
2312 | int i; | |
2313 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2314 | ||
2315 | /* The packet support flags are handled differently for this packet | |
2316 | than for most others. We treat an error, a disabled packet, and | |
2317 | an empty response identically: any features which must be reported | |
2318 | to be used will be automatically disabled. An empty buffer | |
2319 | accomplishes this, since that is also the representation for a list | |
2320 | containing no features. */ | |
2321 | ||
2322 | rs->buf[0] = 0; | |
2323 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2324 | { | |
2325 | putpkt ("qSupported"); | |
2326 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2327 | ||
2328 | /* If an error occured, warn, but do not return - just reset the | |
2329 | buffer to empty and go on to disable features. */ | |
2330 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2331 | == PACKET_ERROR) | |
2332 | { | |
2333 | warning (_("Remote failure reply: %s"), rs->buf); | |
2334 | rs->buf[0] = 0; | |
2335 | } | |
2336 | } | |
2337 | ||
2338 | memset (seen, 0, sizeof (seen)); | |
2339 | ||
2340 | next = rs->buf; | |
2341 | while (*next) | |
2342 | { | |
2343 | enum packet_support is_supported; | |
2344 | char *p, *end, *name_end, *value; | |
2345 | ||
2346 | /* First separate out this item from the rest of the packet. If | |
2347 | there's another item after this, we overwrite the separator | |
2348 | (terminated strings are much easier to work with). */ | |
2349 | p = next; | |
2350 | end = strchr (p, ';'); | |
2351 | if (end == NULL) | |
2352 | { | |
2353 | end = p + strlen (p); | |
2354 | next = end; | |
2355 | } | |
2356 | else | |
2357 | { | |
89be2091 DJ |
2358 | *end = '\0'; |
2359 | next = end + 1; | |
2360 | ||
be2a5f71 DJ |
2361 | if (end == p) |
2362 | { | |
2363 | warning (_("empty item in \"qSupported\" response")); | |
2364 | continue; | |
2365 | } | |
be2a5f71 DJ |
2366 | } |
2367 | ||
2368 | name_end = strchr (p, '='); | |
2369 | if (name_end) | |
2370 | { | |
2371 | /* This is a name=value entry. */ | |
2372 | is_supported = PACKET_ENABLE; | |
2373 | value = name_end + 1; | |
2374 | *name_end = '\0'; | |
2375 | } | |
2376 | else | |
2377 | { | |
2378 | value = NULL; | |
2379 | switch (end[-1]) | |
2380 | { | |
2381 | case '+': | |
2382 | is_supported = PACKET_ENABLE; | |
2383 | break; | |
2384 | ||
2385 | case '-': | |
2386 | is_supported = PACKET_DISABLE; | |
2387 | break; | |
2388 | ||
2389 | case '?': | |
2390 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2391 | break; | |
2392 | ||
2393 | default: | |
2394 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2395 | continue; | |
2396 | } | |
2397 | end[-1] = '\0'; | |
2398 | } | |
2399 | ||
2400 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2401 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2402 | { | |
2403 | const struct protocol_feature *feature; | |
2404 | ||
2405 | seen[i] = 1; | |
2406 | feature = &remote_protocol_features[i]; | |
2407 | feature->func (feature, is_supported, value); | |
2408 | break; | |
2409 | } | |
2410 | } | |
2411 | ||
2412 | /* If we increased the packet size, make sure to increase the global | |
2413 | buffer size also. We delay this until after parsing the entire | |
2414 | qSupported packet, because this is the same buffer we were | |
2415 | parsing. */ | |
2416 | if (rs->buf_size < rs->explicit_packet_size) | |
2417 | { | |
2418 | rs->buf_size = rs->explicit_packet_size; | |
2419 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2420 | } | |
2421 | ||
2422 | /* Handle the defaults for unmentioned features. */ | |
2423 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2424 | if (!seen[i]) | |
2425 | { | |
2426 | const struct protocol_feature *feature; | |
2427 | ||
2428 | feature = &remote_protocol_features[i]; | |
2429 | feature->func (feature, feature->default_support, NULL); | |
2430 | } | |
2431 | } | |
2432 | ||
2433 | ||
c906108c | 2434 | static void |
fba45db2 | 2435 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2436 | int extended_p, int async_p) |
c906108c | 2437 | { |
d01949b6 | 2438 | struct remote_state *rs = get_remote_state (); |
c906108c | 2439 | if (name == 0) |
8a3fe4f8 | 2440 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2441 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2442 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2443 | |
23860348 | 2444 | /* See FIXME above. */ |
92d1e331 DJ |
2445 | if (!async_p) |
2446 | wait_forever_enabled_p = 1; | |
6426a772 | 2447 | |
c906108c SS |
2448 | target_preopen (from_tty); |
2449 | ||
2450 | unpush_target (target); | |
2451 | ||
89be2091 DJ |
2452 | /* Make sure we send the passed signals list the next time we resume. */ |
2453 | xfree (last_pass_packet); | |
2454 | last_pass_packet = NULL; | |
2455 | ||
ad9a8f3f | 2456 | remote_fileio_reset (); |
1dd41f16 NS |
2457 | reopen_exec_file (); |
2458 | reread_symbols (); | |
2459 | ||
9db8d71f | 2460 | remote_desc = remote_serial_open (name); |
c906108c SS |
2461 | if (!remote_desc) |
2462 | perror_with_name (name); | |
2463 | ||
2464 | if (baud_rate != -1) | |
2465 | { | |
2cd58942 | 2466 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2467 | { |
9b74d5d3 KB |
2468 | /* The requested speed could not be set. Error out to |
2469 | top level after closing remote_desc. Take care to | |
2470 | set remote_desc to NULL to avoid closing remote_desc | |
2471 | more than once. */ | |
2cd58942 | 2472 | serial_close (remote_desc); |
9b74d5d3 | 2473 | remote_desc = NULL; |
c906108c SS |
2474 | perror_with_name (name); |
2475 | } | |
2476 | } | |
2477 | ||
2cd58942 | 2478 | serial_raw (remote_desc); |
c906108c SS |
2479 | |
2480 | /* If there is something sitting in the buffer we might take it as a | |
2481 | response to a command, which would be bad. */ | |
2cd58942 | 2482 | serial_flush_input (remote_desc); |
c906108c SS |
2483 | |
2484 | if (from_tty) | |
2485 | { | |
2486 | puts_filtered ("Remote debugging using "); | |
2487 | puts_filtered (name); | |
2488 | puts_filtered ("\n"); | |
2489 | } | |
23860348 | 2490 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2491 | |
be2a5f71 DJ |
2492 | /* Reset the target state; these things will be queried either by |
2493 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2494 | init_all_packet_configs (); |
be2a5f71 | 2495 | rs->explicit_packet_size = 0; |
802188a7 | 2496 | |
c5aa993b | 2497 | general_thread = -2; |
cce74817 | 2498 | continue_thread = -2; |
c906108c | 2499 | |
9d1f7ab2 MS |
2500 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2501 | use_threadinfo_query = 1; | |
2502 | use_threadextra_query = 1; | |
2503 | ||
be2a5f71 DJ |
2504 | /* The first packet we send to the target is the optional "supported |
2505 | packets" request. If the target can answer this, it will tell us | |
2506 | which later probes to skip. */ | |
2507 | remote_query_supported (); | |
2508 | ||
424163ea DJ |
2509 | /* Next, if the target can specify a description, read it. We do |
2510 | this before anything involving memory or registers. */ | |
2511 | target_find_description (); | |
2512 | ||
c906108c SS |
2513 | /* Without this, some commands which require an active target (such |
2514 | as kill) won't work. This variable serves (at least) double duty | |
2515 | as both the pid of the target process (if it has such), and as a | |
2516 | flag indicating that a target is active. These functions should | |
2517 | be split out into seperate variables, especially since GDB will | |
2518 | someday have a notion of debugging several processes. */ | |
2519 | ||
39f77062 | 2520 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2521 | |
2522 | if (async_p) | |
2523 | { | |
23860348 | 2524 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2525 | remote_async_terminal_ours_p = 1; |
2526 | ||
2527 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2528 | assumed that the target is already ready and able to respond to | |
2529 | requests. Unfortunately remote_start_remote() eventually calls | |
2530 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2531 | around this. Eventually a mechanism that allows | |
2532 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2533 | implemented. */ |
92d1e331 DJ |
2534 | wait_forever_enabled_p = 0; |
2535 | } | |
2536 | ||
23860348 | 2537 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2538 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2539 | |
36918e70 | 2540 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2541 | target (we'd otherwise be in an inconsistent state) and then |
2542 | propogate the error on up the exception chain. This ensures that | |
2543 | the caller doesn't stumble along blindly assuming that the | |
2544 | function succeeded. The CLI doesn't have this problem but other | |
2545 | UI's, such as MI do. | |
36918e70 AC |
2546 | |
2547 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2548 | this function should return an error indication letting the | |
ce2826aa | 2549 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2550 | ``target remote'' is directly wired to this function making that |
2551 | impossible. On a positive note, the CLI side of this problem has | |
2552 | been fixed - the function set_cmd_context() makes it possible for | |
2553 | all the ``target ....'' commands to share a common callback | |
2554 | function. See cli-dump.c. */ | |
109c3e39 AC |
2555 | { |
2556 | struct gdb_exception ex | |
8621d6a9 DJ |
2557 | = catch_exception (uiout, remote_start_remote, &from_tty, |
2558 | RETURN_MASK_ALL); | |
109c3e39 AC |
2559 | if (ex.reason < 0) |
2560 | { | |
2561 | pop_target (); | |
2562 | if (async_p) | |
2563 | wait_forever_enabled_p = 1; | |
2564 | throw_exception (ex); | |
2565 | } | |
2566 | } | |
c906108c | 2567 | |
92d1e331 DJ |
2568 | if (async_p) |
2569 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2570 | |
2571 | if (extended_p) | |
43ff13b4 | 2572 | { |
6240bebf | 2573 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2574 | putpkt ("!"); |
6d820c5c | 2575 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2576 | } |
a77053c2 | 2577 | |
23860348 | 2578 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2579 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2580 | } |
2581 | ||
c906108c SS |
2582 | /* This takes a program previously attached to and detaches it. After |
2583 | this is done, GDB can be used to debug some other program. We | |
2584 | better not have left any breakpoints in the target program or it'll | |
2585 | die when it hits one. */ | |
2586 | ||
2587 | static void | |
fba45db2 | 2588 | remote_detach (char *args, int from_tty) |
c906108c | 2589 | { |
d01949b6 | 2590 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2591 | |
2592 | if (args) | |
8a3fe4f8 | 2593 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2594 | |
2595 | /* Tell the remote target to detach. */ | |
6d820c5c DJ |
2596 | strcpy (rs->buf, "D"); |
2597 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 2598 | |
23860348 | 2599 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2600 | if (target_is_async_p ()) |
2601 | serial_async (remote_desc, NULL, 0); | |
2602 | ||
cca728d0 | 2603 | target_mourn_inferior (); |
c906108c SS |
2604 | if (from_tty) |
2605 | puts_filtered ("Ending remote debugging.\n"); | |
2606 | } | |
2607 | ||
6ad8ae5c DJ |
2608 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2609 | ||
43ff13b4 | 2610 | static void |
597320e7 | 2611 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2612 | { |
43ff13b4 | 2613 | if (args) |
8a3fe4f8 | 2614 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2615 | |
23860348 | 2616 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2617 | if (target_is_async_p ()) |
2cd58942 | 2618 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2619 | |
cca728d0 | 2620 | target_mourn_inferior (); |
43ff13b4 JM |
2621 | if (from_tty) |
2622 | puts_filtered ("Ending remote debugging.\n"); | |
2623 | } | |
2624 | ||
c906108c SS |
2625 | /* Convert hex digit A to a number. */ |
2626 | ||
30559e10 | 2627 | static int |
fba45db2 | 2628 | fromhex (int a) |
c906108c SS |
2629 | { |
2630 | if (a >= '0' && a <= '9') | |
2631 | return a - '0'; | |
2632 | else if (a >= 'a' && a <= 'f') | |
2633 | return a - 'a' + 10; | |
2634 | else if (a >= 'A' && a <= 'F') | |
2635 | return a - 'A' + 10; | |
c5aa993b | 2636 | else |
8a3fe4f8 | 2637 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2638 | } |
2639 | ||
30559e10 | 2640 | static int |
cfd77fa1 | 2641 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2642 | { |
2643 | int i; | |
2644 | ||
30559e10 MS |
2645 | for (i = 0; i < count; i++) |
2646 | { | |
2647 | if (hex[0] == 0 || hex[1] == 0) | |
2648 | { | |
2649 | /* Hex string is short, or of uneven length. | |
23860348 | 2650 | Return the count that has been converted so far. */ |
30559e10 MS |
2651 | return i; |
2652 | } | |
2653 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2654 | hex += 2; | |
2655 | } | |
2656 | return i; | |
2657 | } | |
2658 | ||
c906108c SS |
2659 | /* Convert number NIB to a hex digit. */ |
2660 | ||
2661 | static int | |
fba45db2 | 2662 | tohex (int nib) |
c906108c SS |
2663 | { |
2664 | if (nib < 10) | |
c5aa993b | 2665 | return '0' + nib; |
c906108c | 2666 | else |
c5aa993b | 2667 | return 'a' + nib - 10; |
c906108c | 2668 | } |
30559e10 MS |
2669 | |
2670 | static int | |
cfd77fa1 | 2671 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2672 | { |
2673 | int i; | |
23860348 | 2674 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2675 | if (count == 0) |
cfd77fa1 | 2676 | count = strlen ((char *) bin); |
30559e10 MS |
2677 | |
2678 | for (i = 0; i < count; i++) | |
2679 | { | |
2680 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2681 | *hex++ = tohex (*bin++ & 0xf); | |
2682 | } | |
2683 | *hex = 0; | |
2684 | return i; | |
2685 | } | |
c906108c | 2686 | \f |
506fb367 DJ |
2687 | /* Check for the availability of vCont. This function should also check |
2688 | the response. */ | |
c906108c SS |
2689 | |
2690 | static void | |
6d820c5c | 2691 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2692 | { |
2e9f7625 | 2693 | char *buf; |
6d820c5c | 2694 | |
2e9f7625 DJ |
2695 | strcpy (rs->buf, "vCont?"); |
2696 | putpkt (rs->buf); | |
6d820c5c | 2697 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2698 | buf = rs->buf; |
c906108c | 2699 | |
506fb367 DJ |
2700 | /* Make sure that the features we assume are supported. */ |
2701 | if (strncmp (buf, "vCont", 5) == 0) | |
2702 | { | |
2703 | char *p = &buf[5]; | |
2704 | int support_s, support_S, support_c, support_C; | |
2705 | ||
2706 | support_s = 0; | |
2707 | support_S = 0; | |
2708 | support_c = 0; | |
2709 | support_C = 0; | |
2710 | while (p && *p == ';') | |
2711 | { | |
2712 | p++; | |
2713 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2714 | support_s = 1; | |
2715 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2716 | support_S = 1; | |
2717 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2718 | support_c = 1; | |
2719 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2720 | support_C = 1; | |
2721 | ||
2722 | p = strchr (p, ';'); | |
2723 | } | |
c906108c | 2724 | |
506fb367 DJ |
2725 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2726 | BUF will make packet_ok disable the packet. */ | |
2727 | if (!support_s || !support_S || !support_c || !support_C) | |
2728 | buf[0] = 0; | |
2729 | } | |
c906108c | 2730 | |
444abaca | 2731 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2732 | } |
c906108c | 2733 | |
506fb367 DJ |
2734 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2735 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2736 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2737 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2738 | signalled is given in the global INFERIOR_PTID. This function returns | |
2739 | non-zero iff it resumes the inferior. | |
44eaed12 | 2740 | |
506fb367 DJ |
2741 | This function issues a strict subset of all possible vCont commands at the |
2742 | moment. */ | |
44eaed12 | 2743 | |
506fb367 DJ |
2744 | static int |
2745 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2746 | { | |
2747 | struct remote_state *rs = get_remote_state (); | |
2748 | int pid = PIDGET (ptid); | |
2963ee1d | 2749 | char *buf = NULL, *outbuf; |
506fb367 | 2750 | struct cleanup *old_cleanup; |
44eaed12 | 2751 | |
444abaca | 2752 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2753 | remote_vcont_probe (rs); |
44eaed12 | 2754 | |
444abaca | 2755 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2756 | return 0; |
44eaed12 | 2757 | |
506fb367 DJ |
2758 | /* If we could generate a wider range of packets, we'd have to worry |
2759 | about overflowing BUF. Should there be a generic | |
2760 | "multi-part-packet" packet? */ | |
2761 | ||
2762 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2763 | { |
506fb367 DJ |
2764 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2765 | don't have any PID numbers the inferior will understand. Make sure | |
2766 | to only send forms that do not specify a PID. */ | |
2767 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2768 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2769 | else if (step) |
2963ee1d | 2770 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2771 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2772 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2773 | else |
2963ee1d | 2774 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2775 | } |
2776 | else if (pid == -1) | |
2777 | { | |
2778 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2779 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2780 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2781 | PIDGET (inferior_ptid)); | |
506fb367 | 2782 | else if (step) |
2963ee1d | 2783 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2784 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2785 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2786 | PIDGET (inferior_ptid)); | |
506fb367 | 2787 | else |
2963ee1d | 2788 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2789 | } |
2790 | else | |
506fb367 DJ |
2791 | { |
2792 | /* Scheduler locking; resume only PTID. */ | |
2793 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2794 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2795 | else if (step) |
2963ee1d | 2796 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2797 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2798 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2799 | else |
2963ee1d | 2800 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2801 | } |
c906108c | 2802 | |
ea9c271d | 2803 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2804 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2805 | |
2806 | putpkt (outbuf); | |
506fb367 DJ |
2807 | |
2808 | do_cleanups (old_cleanup); | |
2809 | ||
2810 | return 1; | |
c906108c | 2811 | } |
43ff13b4 | 2812 | |
506fb367 DJ |
2813 | /* Tell the remote machine to resume. */ |
2814 | ||
2815 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2816 | ||
2817 | static int last_sent_step; | |
2818 | ||
43ff13b4 | 2819 | static void |
506fb367 | 2820 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2821 | { |
d01949b6 | 2822 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2823 | char *buf; |
39f77062 | 2824 | int pid = PIDGET (ptid); |
43ff13b4 | 2825 | |
43ff13b4 JM |
2826 | last_sent_signal = siggnal; |
2827 | last_sent_step = step; | |
2828 | ||
2829 | /* A hook for when we need to do something at the last moment before | |
2830 | resumption. */ | |
9a4105ab AC |
2831 | if (deprecated_target_resume_hook) |
2832 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2833 | |
89be2091 DJ |
2834 | /* Update the inferior on signals to silently pass, if they've changed. */ |
2835 | remote_pass_signals (); | |
2836 | ||
506fb367 DJ |
2837 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2838 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2839 | return; | |
2840 | ||
2841 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2842 | if (pid == -1) | |
23860348 | 2843 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2844 | else |
23860348 | 2845 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2846 | |
2e9f7625 | 2847 | buf = rs->buf; |
43ff13b4 JM |
2848 | if (siggnal != TARGET_SIGNAL_0) |
2849 | { | |
2850 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2851 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2852 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2853 | buf[3] = '\0'; |
2854 | } | |
2855 | else | |
c5aa993b | 2856 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2857 | |
44eaed12 | 2858 | putpkt (buf); |
506fb367 DJ |
2859 | } |
2860 | ||
23860348 | 2861 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2862 | static void |
2863 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2864 | { | |
2865 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2866 | |
2acceee2 JM |
2867 | /* We are about to start executing the inferior, let's register it |
2868 | with the event loop. NOTE: this is the one place where all the | |
2869 | execution commands end up. We could alternatively do this in each | |
23860348 | 2870 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2871 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2872 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2873 | NOT asynchronously. */ |
362646f5 | 2874 | if (target_can_async_p ()) |
2acceee2 | 2875 | target_async (inferior_event_handler, 0); |
23860348 | 2876 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2877 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2878 | this? Instead, should the client of target just assume (for | |
2879 | async targets) that the target is going to start executing? Is | |
2880 | this information already found in the continuation block? */ | |
ed9a39eb | 2881 | if (target_is_async_p ()) |
2acceee2 | 2882 | target_executing = 1; |
43ff13b4 | 2883 | } |
c906108c | 2884 | \f |
43ff13b4 JM |
2885 | |
2886 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2887 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2888 | static void |
fba45db2 | 2889 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2890 | { |
c5aa993b | 2891 | sigint_remote_token = |
43ff13b4 JM |
2892 | create_async_signal_handler (async_remote_interrupt, NULL); |
2893 | signal (SIGINT, handle_remote_sigint); | |
2894 | } | |
2895 | ||
23860348 | 2896 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2897 | static void |
fba45db2 | 2898 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2899 | { |
2900 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2901 | sigint_remote_twice_token = |
43ff13b4 JM |
2902 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2903 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2904 | } | |
2905 | ||
2906 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2907 | sent once. It will take effect the second time that the user sends | |
23860348 | 2908 | a ^C. */ |
43ff13b4 | 2909 | static void |
fba45db2 | 2910 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2911 | { |
2912 | signal (sig, handle_sigint); | |
c5aa993b | 2913 | sigint_remote_twice_token = |
2df3850c | 2914 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2915 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2916 | } | |
2917 | ||
6426a772 | 2918 | /* Perform the real interruption of the target execution, in response |
23860348 | 2919 | to a ^C. */ |
c5aa993b | 2920 | static void |
fba45db2 | 2921 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2922 | { |
2923 | if (remote_debug) | |
2924 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2925 | ||
2926 | target_stop (); | |
2927 | } | |
2928 | ||
2929 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2930 | up on the target alltogether. */ |
2df3850c | 2931 | void |
fba45db2 | 2932 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2933 | { |
2df3850c JM |
2934 | if (remote_debug) |
2935 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2936 | /* Do something only if the target was not killed by the previous |
23860348 | 2937 | cntl-C. */ |
6426a772 JM |
2938 | if (target_executing) |
2939 | { | |
2940 | interrupt_query (); | |
2941 | signal (SIGINT, handle_remote_sigint); | |
2942 | } | |
43ff13b4 JM |
2943 | } |
2944 | ||
2945 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2946 | stopped. */ |
6426a772 JM |
2947 | static void |
2948 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2949 | { |
2950 | signal (SIGINT, handle_sigint); | |
2951 | if (sigint_remote_twice_token) | |
d5d6fca5 | 2952 | delete_async_signal_handler (&sigint_remote_twice_token); |
43ff13b4 | 2953 | if (sigint_remote_token) |
d5d6fca5 | 2954 | delete_async_signal_handler (&sigint_remote_token); |
43ff13b4 JM |
2955 | } |
2956 | ||
c906108c SS |
2957 | /* Send ^C to target to halt it. Target will respond, and send us a |
2958 | packet. */ | |
507f3c78 | 2959 | static void (*ofunc) (int); |
c906108c | 2960 | |
7a292a7a SS |
2961 | /* The command line interface's stop routine. This function is installed |
2962 | as a signal handler for SIGINT. The first time a user requests a | |
2963 | stop, we call remote_stop to send a break or ^C. If there is no | |
2964 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2965 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2966 | static void |
fba45db2 | 2967 | remote_interrupt (int signo) |
c906108c | 2968 | { |
23860348 | 2969 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2970 | signal (signo, remote_interrupt_twice); |
2971 | ||
2972 | if (remote_debug) | |
0f71a2f6 | 2973 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2974 | |
2975 | target_stop (); | |
2976 | } | |
2977 | ||
2978 | /* The user typed ^C twice. */ | |
2979 | ||
2980 | static void | |
fba45db2 | 2981 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2982 | { |
2983 | signal (signo, ofunc); | |
2984 | interrupt_query (); | |
c906108c SS |
2985 | signal (signo, remote_interrupt); |
2986 | } | |
7a292a7a SS |
2987 | |
2988 | /* This is the generic stop called via the target vector. When a target | |
2989 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2990 | will eventually end up here. */ |
c906108c | 2991 | static void |
fba45db2 | 2992 | remote_stop (void) |
c906108c | 2993 | { |
7a292a7a SS |
2994 | /* Send a break or a ^C, depending on user preference. */ |
2995 | if (remote_debug) | |
0f71a2f6 | 2996 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2997 | |
7a292a7a | 2998 | if (remote_break) |
2cd58942 | 2999 | serial_send_break (remote_desc); |
c906108c | 3000 | else |
2cd58942 | 3001 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
3002 | } |
3003 | ||
3004 | /* Ask the user what to do when an interrupt is received. */ | |
3005 | ||
3006 | static void | |
fba45db2 | 3007 | interrupt_query (void) |
c906108c SS |
3008 | { |
3009 | target_terminal_ours (); | |
3010 | ||
3011 | if (query ("Interrupted while waiting for the program.\n\ | |
3012 | Give up (and stop debugging it)? ")) | |
3013 | { | |
3014 | target_mourn_inferior (); | |
315a522e | 3015 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3016 | } |
3017 | ||
3018 | target_terminal_inferior (); | |
3019 | } | |
3020 | ||
6426a772 JM |
3021 | /* Enable/disable target terminal ownership. Most targets can use |
3022 | terminal groups to control terminal ownership. Remote targets are | |
3023 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3024 | is required. */ |
6426a772 JM |
3025 | |
3026 | static void | |
3027 | remote_async_terminal_inferior (void) | |
3028 | { | |
3029 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
3030 | sync_execution here. This function should only be called when | |
3031 | GDB is resuming the inferior in the forground. A background | |
3032 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3033 | consequently should not call this code. */ |
6426a772 JM |
3034 | if (!sync_execution) |
3035 | return; | |
3036 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3037 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3038 | to an asynchronous target with a synchronous command calls this | |
3039 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3040 | stops trying to transfer the terminal to the target when it | |
3041 | shouldn't this guard can go away. */ | |
3042 | if (!remote_async_terminal_ours_p) | |
3043 | return; | |
3044 | delete_file_handler (input_fd); | |
3045 | remote_async_terminal_ours_p = 0; | |
3046 | initialize_sigint_signal_handler (); | |
3047 | /* NOTE: At this point we could also register our selves as the | |
3048 | recipient of all input. Any characters typed could then be | |
23860348 | 3049 | passed on down to the target. */ |
6426a772 JM |
3050 | } |
3051 | ||
3052 | static void | |
3053 | remote_async_terminal_ours (void) | |
3054 | { | |
23860348 | 3055 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3056 | if (!sync_execution) |
3057 | return; | |
23860348 | 3058 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3059 | if (remote_async_terminal_ours_p) |
3060 | return; | |
3061 | cleanup_sigint_signal_handler (NULL); | |
3062 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3063 | remote_async_terminal_ours_p = 1; | |
3064 | } | |
3065 | ||
c906108c SS |
3066 | /* If nonzero, ignore the next kill. */ |
3067 | ||
3068 | int kill_kludge; | |
3069 | ||
3070 | void | |
917317f4 | 3071 | remote_console_output (char *msg) |
c906108c SS |
3072 | { |
3073 | char *p; | |
3074 | ||
c5aa993b | 3075 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3076 | { |
3077 | char tb[2]; | |
3078 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3079 | tb[0] = c; | |
3080 | tb[1] = 0; | |
43ff13b4 | 3081 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3082 | } |
917317f4 | 3083 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3084 | } |
3085 | ||
0f71a2f6 JM |
3086 | /* Wait until the remote machine stops, then return, |
3087 | storing status in STATUS just as `wait' would. | |
802188a7 | 3088 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 3089 | remote OS, is the thread-id. */ |
c906108c | 3090 | |
39f77062 KB |
3091 | static ptid_t |
3092 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3093 | { |
d01949b6 | 3094 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3095 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3096 | ULONGEST thread_num = -1; |
3c3bea1c | 3097 | ULONGEST addr; |
c906108c SS |
3098 | |
3099 | status->kind = TARGET_WAITKIND_EXITED; | |
3100 | status->value.integer = 0; | |
3101 | ||
3102 | while (1) | |
3103 | { | |
2e9f7625 | 3104 | char *buf, *p; |
c906108c | 3105 | |
c906108c | 3106 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 3107 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
3108 | signal (SIGINT, ofunc); |
3109 | ||
2e9f7625 DJ |
3110 | buf = rs->buf; |
3111 | ||
c906108c | 3112 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3113 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3114 | if (deprecated_target_wait_loop_hook) |
3115 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 3116 | |
3c3bea1c GS |
3117 | remote_stopped_by_watchpoint_p = 0; |
3118 | ||
c906108c SS |
3119 | switch (buf[0]) |
3120 | { | |
23860348 | 3121 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3122 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 3123 | continue; |
23860348 | 3124 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3125 | remote_fileio_request (buf); |
3126 | continue; | |
23860348 | 3127 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 3128 | { |
cfd77fa1 | 3129 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 3130 | |
23860348 | 3131 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 3132 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3133 | ss = signal number |
3134 | n... = register number | |
3135 | r... = register contents | |
3136 | */ | |
c906108c SS |
3137 | p = &buf[3]; /* after Txx */ |
3138 | ||
3139 | while (*p) | |
3140 | { | |
cfd77fa1 | 3141 | char *p1; |
c906108c | 3142 | char *p_temp; |
97345198 | 3143 | int fieldsize; |
3c3bea1c GS |
3144 | LONGEST pnum = 0; |
3145 | ||
23860348 MS |
3146 | /* If the packet contains a register number save it in |
3147 | pnum and set p1 to point to the character following | |
3148 | it. Otherwise p1 points to p. */ | |
c906108c | 3149 | |
23860348 MS |
3150 | /* If this packet is an awatch packet, don't parse the |
3151 | 'a' as a register number. */ | |
3c3bea1c GS |
3152 | |
3153 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3154 | { | |
3155 | /* Read the ``P'' register number. */ | |
3156 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3157 | p1 = p_temp; |
3c3bea1c | 3158 | } |
802188a7 | 3159 | else |
3c3bea1c | 3160 | p1 = p; |
c906108c | 3161 | |
23860348 | 3162 | if (p1 == p) /* No register number present here. */ |
c906108c | 3163 | { |
cfd77fa1 | 3164 | p1 = strchr (p, ':'); |
c906108c | 3165 | if (p1 == NULL) |
670aa98f | 3166 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3167 | Packet: '%s'\n"), |
670aa98f | 3168 | p, buf); |
3c3bea1c | 3169 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3170 | { |
3171 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3172 | record_currthread (thread_num); | |
cfd77fa1 | 3173 | p = p_temp; |
c906108c | 3174 | } |
3c3bea1c GS |
3175 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3176 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3177 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3178 | { | |
3179 | remote_stopped_by_watchpoint_p = 1; | |
3180 | p = unpack_varlen_hex (++p1, &addr); | |
3181 | remote_watch_data_address = (CORE_ADDR)addr; | |
3182 | } | |
3183 | else | |
3184 | { | |
3185 | /* Silently skip unknown optional info. */ | |
3186 | p_temp = strchr (p1 + 1, ';'); | |
3187 | if (p_temp) | |
cfd77fa1 | 3188 | p = p_temp; |
3c3bea1c | 3189 | } |
c906108c SS |
3190 | } |
3191 | else | |
3192 | { | |
ea9c271d | 3193 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3194 | p = p1; |
3195 | ||
3196 | if (*p++ != ':') | |
8a3fe4f8 AC |
3197 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3198 | Packet: '%s'\n"), | |
3fcb8548 | 3199 | p, buf); |
c906108c | 3200 | |
ad10f812 | 3201 | if (reg == NULL) |
8a3fe4f8 AC |
3202 | error (_("Remote sent bad register number %s: %s\n\ |
3203 | Packet: '%s'\n"), | |
3fcb8548 | 3204 | phex_nz (pnum, 0), p, buf); |
c906108c | 3205 | |
cfd77fa1 | 3206 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3207 | register_size (current_gdbarch, |
23860348 | 3208 | reg->regnum)); |
97345198 | 3209 | p += 2 * fieldsize; |
2bc416ba | 3210 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3211 | reg->regnum)) |
8a3fe4f8 | 3212 | warning (_("Remote reply is too short: %s"), buf); |
2bc416ba | 3213 | regcache_raw_supply (current_regcache, |
23860348 | 3214 | reg->regnum, regs); |
c906108c SS |
3215 | } |
3216 | ||
3217 | if (*p++ != ';') | |
2bc416ba | 3218 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3219 | buf, p); |
c906108c SS |
3220 | } |
3221 | } | |
3222 | /* fall through */ | |
23860348 | 3223 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
3224 | status->kind = TARGET_WAITKIND_STOPPED; |
3225 | status->value.sig = (enum target_signal) | |
3226 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3227 | ||
0f71a2f6 JM |
3228 | if (buf[3] == 'p') |
3229 | { | |
0f71a2f6 JM |
3230 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3231 | record_currthread (thread_num); | |
3232 | } | |
c906108c | 3233 | goto got_status; |
23860348 | 3234 | case 'W': /* Target exited. */ |
c906108c SS |
3235 | { |
3236 | /* The remote process exited. */ | |
3237 | status->kind = TARGET_WAITKIND_EXITED; | |
3238 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3239 | goto got_status; | |
3240 | } | |
3241 | case 'X': | |
3242 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3243 | status->value.sig = (enum target_signal) | |
3244 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3245 | kill_kludge = 1; | |
3246 | ||
3247 | goto got_status; | |
23860348 | 3248 | case 'O': /* Console output. */ |
c906108c SS |
3249 | remote_console_output (buf + 1); |
3250 | continue; | |
3251 | case '\0': | |
3252 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3253 | { | |
3254 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3255 | the remote system doesn't support it. */ |
c906108c SS |
3256 | target_terminal_ours_for_output (); |
3257 | printf_filtered | |
3258 | ("Can't send signals to this remote system. %s not sent.\n", | |
3259 | target_signal_to_name (last_sent_signal)); | |
3260 | last_sent_signal = TARGET_SIGNAL_0; | |
3261 | target_terminal_inferior (); | |
3262 | ||
3263 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3264 | putpkt ((char *) buf); | |
3265 | continue; | |
3266 | } | |
3267 | /* else fallthrough */ | |
3268 | default: | |
8a3fe4f8 | 3269 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3270 | continue; |
3271 | } | |
3272 | } | |
c5aa993b | 3273 | got_status: |
c906108c SS |
3274 | if (thread_num != -1) |
3275 | { | |
39f77062 | 3276 | return pid_to_ptid (thread_num); |
c906108c | 3277 | } |
39f77062 | 3278 | return inferior_ptid; |
c906108c SS |
3279 | } |
3280 | ||
23860348 | 3281 | /* Async version of remote_wait. */ |
39f77062 KB |
3282 | static ptid_t |
3283 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3284 | { |
d01949b6 | 3285 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3286 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3287 | ULONGEST thread_num = -1; |
3c3bea1c | 3288 | ULONGEST addr; |
43ff13b4 JM |
3289 | |
3290 | status->kind = TARGET_WAITKIND_EXITED; | |
3291 | status->value.integer = 0; | |
3292 | ||
3c3bea1c GS |
3293 | remote_stopped_by_watchpoint_p = 0; |
3294 | ||
43ff13b4 JM |
3295 | while (1) |
3296 | { | |
2e9f7625 | 3297 | char *buf, *p; |
c5aa993b | 3298 | |
ed9a39eb | 3299 | if (!target_is_async_p ()) |
43ff13b4 | 3300 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3301 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3302 | _never_ wait for ever -> test on target_is_async_p(). | |
3303 | However, before we do that we need to ensure that the caller | |
23860348 | 3304 | knows how to take the target into/out of async mode. */ |
6d820c5c | 3305 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 3306 | if (!target_is_async_p ()) |
43ff13b4 JM |
3307 | signal (SIGINT, ofunc); |
3308 | ||
2e9f7625 DJ |
3309 | buf = rs->buf; |
3310 | ||
43ff13b4 | 3311 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3312 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3313 | if (deprecated_target_wait_loop_hook) |
3314 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3315 | |
3316 | switch (buf[0]) | |
3317 | { | |
23860348 | 3318 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3319 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3320 | continue; |
23860348 | 3321 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3322 | remote_fileio_request (buf); |
3323 | continue; | |
23860348 | 3324 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3325 | { |
cfd77fa1 | 3326 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3327 | |
23860348 | 3328 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3329 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3330 | ss = signal number |
3331 | n... = register number | |
3332 | r... = register contents | |
3333 | */ | |
43ff13b4 JM |
3334 | p = &buf[3]; /* after Txx */ |
3335 | ||
3336 | while (*p) | |
3337 | { | |
cfd77fa1 | 3338 | char *p1; |
43ff13b4 | 3339 | char *p_temp; |
6c3f2dbf | 3340 | int fieldsize; |
3c3bea1c | 3341 | long pnum = 0; |
43ff13b4 | 3342 | |
23860348 MS |
3343 | /* If the packet contains a register number, save it |
3344 | in pnum and set p1 to point to the character | |
3345 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3346 | |
3347 | /* If this packet is an awatch packet, don't parse the 'a' | |
3348 | as a register number. */ | |
802188a7 | 3349 | |
3c3bea1c GS |
3350 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3351 | { | |
3352 | /* Read the register number. */ | |
3353 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3354 | p1 = p_temp; |
3c3bea1c | 3355 | } |
802188a7 | 3356 | else |
3c3bea1c | 3357 | p1 = p; |
43ff13b4 | 3358 | |
23860348 | 3359 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3360 | { |
cfd77fa1 | 3361 | p1 = strchr (p, ':'); |
43ff13b4 | 3362 | if (p1 == NULL) |
8a3fe4f8 AC |
3363 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3364 | Packet: '%s'\n"), | |
3fcb8548 | 3365 | p, buf); |
3c3bea1c | 3366 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3367 | { |
3368 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3369 | record_currthread (thread_num); | |
cfd77fa1 | 3370 | p = p_temp; |
43ff13b4 | 3371 | } |
3c3bea1c GS |
3372 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3373 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3374 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3375 | { | |
3376 | remote_stopped_by_watchpoint_p = 1; | |
3377 | p = unpack_varlen_hex (++p1, &addr); | |
3378 | remote_watch_data_address = (CORE_ADDR)addr; | |
3379 | } | |
3380 | else | |
3381 | { | |
3382 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3383 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3384 | if (p_temp) |
3385 | p = p_temp; | |
3386 | } | |
43ff13b4 | 3387 | } |
802188a7 | 3388 | |
43ff13b4 JM |
3389 | else |
3390 | { | |
ea9c271d | 3391 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3392 | p = p1; |
43ff13b4 | 3393 | if (*p++ != ':') |
8a3fe4f8 AC |
3394 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3395 | Packet: '%s'\n"), | |
3fcb8548 | 3396 | p, buf); |
43ff13b4 | 3397 | |
ad10f812 | 3398 | if (reg == NULL) |
8a3fe4f8 AC |
3399 | error (_("Remote sent bad register number %ld: %s\n\ |
3400 | Packet: '%s'\n"), | |
3fcb8548 | 3401 | pnum, p, buf); |
43ff13b4 | 3402 | |
cfd77fa1 | 3403 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3404 | register_size (current_gdbarch, |
23860348 | 3405 | reg->regnum)); |
6c3f2dbf | 3406 | p += 2 * fieldsize; |
2bc416ba | 3407 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3408 | reg->regnum)) |
8a3fe4f8 | 3409 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 3410 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3411 | } |
3412 | ||
3413 | if (*p++ != ';') | |
8a3fe4f8 | 3414 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3415 | buf, p); |
43ff13b4 JM |
3416 | } |
3417 | } | |
3418 | /* fall through */ | |
23860348 | 3419 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3420 | status->kind = TARGET_WAITKIND_STOPPED; |
3421 | status->value.sig = (enum target_signal) | |
3422 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3423 | ||
3424 | if (buf[3] == 'p') | |
3425 | { | |
43ff13b4 JM |
3426 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3427 | record_currthread (thread_num); | |
3428 | } | |
43ff13b4 | 3429 | goto got_status; |
23860348 | 3430 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3431 | { |
3432 | /* The remote process exited. */ | |
3433 | status->kind = TARGET_WAITKIND_EXITED; | |
3434 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3435 | goto got_status; | |
3436 | } | |
3437 | case 'X': | |
3438 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3439 | status->value.sig = (enum target_signal) | |
3440 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3441 | kill_kludge = 1; | |
3442 | ||
3443 | goto got_status; | |
23860348 | 3444 | case 'O': /* Console output. */ |
43ff13b4 | 3445 | remote_console_output (buf + 1); |
c4093a6a | 3446 | /* Return immediately to the event loop. The event loop will |
23860348 | 3447 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3448 | status->kind = TARGET_WAITKIND_IGNORE; |
3449 | goto got_status; | |
43ff13b4 JM |
3450 | case '\0': |
3451 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3452 | { | |
3453 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3454 | the remote system doesn't support it. */ |
43ff13b4 JM |
3455 | target_terminal_ours_for_output (); |
3456 | printf_filtered | |
3457 | ("Can't send signals to this remote system. %s not sent.\n", | |
3458 | target_signal_to_name (last_sent_signal)); | |
3459 | last_sent_signal = TARGET_SIGNAL_0; | |
3460 | target_terminal_inferior (); | |
3461 | ||
3462 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3463 | putpkt ((char *) buf); | |
3464 | continue; | |
3465 | } | |
3466 | /* else fallthrough */ | |
3467 | default: | |
8a3fe4f8 | 3468 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3469 | continue; |
3470 | } | |
3471 | } | |
c5aa993b | 3472 | got_status: |
43ff13b4 JM |
3473 | if (thread_num != -1) |
3474 | { | |
39f77062 | 3475 | return pid_to_ptid (thread_num); |
43ff13b4 | 3476 | } |
39f77062 | 3477 | return inferior_ptid; |
43ff13b4 JM |
3478 | } |
3479 | ||
74ca34ce | 3480 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3481 | |
b96ec7ac | 3482 | static int |
74ca34ce | 3483 | fetch_register_using_p (struct packet_reg *reg) |
b96ec7ac AC |
3484 | { |
3485 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3486 | char *buf, *p; |
b96ec7ac AC |
3487 | char regp[MAX_REGISTER_SIZE]; |
3488 | int i; | |
3489 | ||
74ca34ce DJ |
3490 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3491 | return 0; | |
3492 | ||
3493 | if (reg->pnum == -1) | |
3494 | return 0; | |
3495 | ||
2e9f7625 | 3496 | p = rs->buf; |
fcad0fa4 | 3497 | *p++ = 'p'; |
74ca34ce | 3498 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 3499 | *p++ = '\0'; |
6d820c5c | 3500 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3501 | |
2e9f7625 DJ |
3502 | buf = rs->buf; |
3503 | ||
74ca34ce DJ |
3504 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
3505 | { | |
3506 | case PACKET_OK: | |
3507 | break; | |
3508 | case PACKET_UNKNOWN: | |
3509 | return 0; | |
3510 | case PACKET_ERROR: | |
3511 | error (_("Could not fetch register \"%s\""), | |
3512 | gdbarch_register_name (current_gdbarch, reg->regnum)); | |
3513 | } | |
3f9a994c JB |
3514 | |
3515 | /* If this register is unfetchable, tell the regcache. */ | |
3516 | if (buf[0] == 'x') | |
8480adf2 | 3517 | { |
74ca34ce DJ |
3518 | regcache_raw_supply (current_regcache, reg->regnum, NULL); |
3519 | set_register_cached (reg->regnum, -1); | |
8480adf2 | 3520 | return 1; |
b96ec7ac | 3521 | } |
b96ec7ac | 3522 | |
3f9a994c JB |
3523 | /* Otherwise, parse and supply the value. */ |
3524 | p = buf; | |
3525 | i = 0; | |
3526 | while (p[0] != 0) | |
3527 | { | |
3528 | if (p[1] == 0) | |
74ca34ce | 3529 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3530 | |
3531 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3532 | p += 2; | |
3533 | } | |
74ca34ce | 3534 | regcache_raw_supply (current_regcache, reg->regnum, regp); |
3f9a994c | 3535 | return 1; |
b96ec7ac AC |
3536 | } |
3537 | ||
74ca34ce DJ |
3538 | /* Fetch the registers included in the target's 'g' packet. */ |
3539 | ||
29709017 DJ |
3540 | static int |
3541 | send_g_packet (void) | |
c906108c | 3542 | { |
d01949b6 | 3543 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 3544 | int i, buf_len; |
c906108c | 3545 | char *p; |
74ca34ce | 3546 | char *regs; |
c906108c | 3547 | |
74ca34ce DJ |
3548 | sprintf (rs->buf, "g"); |
3549 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 3550 | |
29709017 DJ |
3551 | /* We can get out of synch in various cases. If the first character |
3552 | in the buffer is not a hex character, assume that has happened | |
3553 | and try to fetch another packet to read. */ | |
3554 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
3555 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
3556 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
3557 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
3558 | { | |
3559 | if (remote_debug) | |
3560 | fprintf_unfiltered (gdb_stdlog, | |
3561 | "Bad register packet; fetching a new packet\n"); | |
3562 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3563 | } | |
3564 | ||
74ca34ce DJ |
3565 | buf_len = strlen (rs->buf); |
3566 | ||
3567 | /* Sanity check the received packet. */ | |
3568 | if (buf_len % 2 != 0) | |
3569 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
3570 | |
3571 | return buf_len / 2; | |
3572 | } | |
3573 | ||
3574 | static void | |
3575 | process_g_packet (void) | |
3576 | { | |
3577 | struct remote_state *rs = get_remote_state (); | |
3578 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3579 | int i, buf_len; | |
3580 | char *p; | |
3581 | char *regs; | |
3582 | ||
3583 | buf_len = strlen (rs->buf); | |
3584 | ||
3585 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
3586 | if (REGISTER_BYTES_OK_P () && !REGISTER_BYTES_OK (buf_len / 2)) |
3587 | error (_("Remote 'g' packet reply is wrong length: %s"), rs->buf); | |
3588 | if (buf_len > 2 * rsa->sizeof_g_packet) | |
3589 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
3590 | ||
3591 | /* Save the size of the packet sent to us by the target. It is used | |
3592 | as a heuristic when determining the max size of packets that the | |
3593 | target can safely receive. */ | |
3594 | if (rsa->actual_register_packet_size == 0) | |
3595 | rsa->actual_register_packet_size = buf_len; | |
3596 | ||
3597 | /* If this is smaller than we guessed the 'g' packet would be, | |
3598 | update our records. A 'g' reply that doesn't include a register's | |
3599 | value implies either that the register is not available, or that | |
3600 | the 'p' packet must be used. */ | |
3601 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 3602 | { |
74ca34ce DJ |
3603 | rsa->sizeof_g_packet = buf_len / 2; |
3604 | ||
3605 | for (i = 0; i < NUM_REGS; i++) | |
b96ec7ac | 3606 | { |
74ca34ce DJ |
3607 | if (rsa->regs[i].pnum == -1) |
3608 | continue; | |
3609 | ||
3610 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
3611 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 3612 | else |
74ca34ce | 3613 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 3614 | } |
74ca34ce | 3615 | } |
b323314b | 3616 | |
74ca34ce | 3617 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
3618 | |
3619 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3620 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 3621 | |
c906108c SS |
3622 | /* Reply describes registers byte by byte, each byte encoded as two |
3623 | hex characters. Suck them all up, then supply them to the | |
3624 | register cacheing/storage mechanism. */ | |
3625 | ||
74ca34ce | 3626 | p = rs->buf; |
ea9c271d | 3627 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 3628 | { |
74ca34ce DJ |
3629 | if (p[0] == 0 || p[1] == 0) |
3630 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
3631 | internal_error (__FILE__, __LINE__, | |
3632 | "unexpected end of 'g' packet reply"); | |
3633 | ||
c906108c | 3634 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 3635 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3636 | else |
3637 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3638 | p += 2; | |
3639 | } | |
3640 | ||
ad10f812 | 3641 | { |
b323314b | 3642 | int i; |
74ca34ce | 3643 | for (i = 0; i < NUM_REGS; i++) |
ad10f812 | 3644 | { |
ea9c271d | 3645 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3646 | if (r->in_g_packet) |
3647 | { | |
74ca34ce DJ |
3648 | if (r->offset * 2 >= strlen (rs->buf)) |
3649 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
3650 | internal_error (__FILE__, __LINE__, | |
3651 | "unexpected end of 'g' packet reply"); | |
3652 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 3653 | { |
74ca34ce | 3654 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
3655 | /* The register isn't available, mark it as such (at |
3656 | the same time setting the value to zero). */ | |
3657 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3658 | set_register_cached (i, -1); | |
3659 | } | |
3660 | else | |
3661 | regcache_raw_supply (current_regcache, r->regnum, | |
3662 | regs + r->offset); | |
b323314b | 3663 | } |
ad10f812 AC |
3664 | } |
3665 | } | |
c906108c SS |
3666 | } |
3667 | ||
29709017 DJ |
3668 | static void |
3669 | fetch_registers_using_g (void) | |
3670 | { | |
3671 | send_g_packet (); | |
3672 | process_g_packet (); | |
3673 | } | |
3674 | ||
74ca34ce DJ |
3675 | static void |
3676 | remote_fetch_registers (int regnum) | |
3677 | { | |
3678 | struct remote_state *rs = get_remote_state (); | |
3679 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3680 | int i; | |
3681 | ||
3682 | set_thread (PIDGET (inferior_ptid), 1); | |
3683 | ||
3684 | if (regnum >= 0) | |
3685 | { | |
3686 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3687 | gdb_assert (reg != NULL); | |
3688 | ||
3689 | /* If this register might be in the 'g' packet, try that first - | |
3690 | we are likely to read more than one register. If this is the | |
3691 | first 'g' packet, we might be overly optimistic about its | |
3692 | contents, so fall back to 'p'. */ | |
3693 | if (reg->in_g_packet) | |
3694 | { | |
3695 | fetch_registers_using_g (); | |
3696 | if (reg->in_g_packet) | |
3697 | return; | |
3698 | } | |
3699 | ||
3700 | if (fetch_register_using_p (reg)) | |
3701 | return; | |
3702 | ||
3703 | /* This register is not available. */ | |
3704 | regcache_raw_supply (current_regcache, reg->regnum, NULL); | |
3705 | set_register_cached (reg->regnum, -1); | |
3706 | ||
3707 | return; | |
3708 | } | |
3709 | ||
3710 | fetch_registers_using_g (); | |
3711 | ||
3712 | for (i = 0; i < NUM_REGS; i++) | |
3713 | if (!rsa->regs[i].in_g_packet) | |
3714 | if (!fetch_register_using_p (&rsa->regs[i])) | |
3715 | { | |
3716 | /* This register is not available. */ | |
3717 | regcache_raw_supply (current_regcache, i, NULL); | |
3718 | set_register_cached (i, -1); | |
3719 | } | |
3720 | } | |
3721 | ||
c906108c SS |
3722 | /* Prepare to store registers. Since we may send them all (using a |
3723 | 'G' request), we have to read out the ones we don't want to change | |
3724 | first. */ | |
3725 | ||
c5aa993b | 3726 | static void |
fba45db2 | 3727 | remote_prepare_to_store (void) |
c906108c | 3728 | { |
ea9c271d | 3729 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3730 | int i; |
cfd77fa1 | 3731 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3732 | |
c906108c | 3733 | /* Make sure the entire registers array is valid. */ |
444abaca | 3734 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3735 | { |
3736 | case PACKET_DISABLE: | |
3737 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3738 | /* Make sure all the necessary registers are cached. */ |
3739 | for (i = 0; i < NUM_REGS; i++) | |
ea9c271d DJ |
3740 | if (rsa->regs[i].in_g_packet) |
3741 | regcache_raw_read (current_regcache, rsa->regs[i].regnum, buf); | |
5a2468f5 JM |
3742 | break; |
3743 | case PACKET_ENABLE: | |
3744 | break; | |
3745 | } | |
3746 | } | |
3747 | ||
ad10f812 | 3748 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3749 | packet was not recognized. */ |
5a2468f5 JM |
3750 | |
3751 | static int | |
74ca34ce | 3752 | store_register_using_P (struct packet_reg *reg) |
5a2468f5 | 3753 | { |
d01949b6 | 3754 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3755 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 3756 | /* Try storing a single register. */ |
6d820c5c | 3757 | char *buf = rs->buf; |
cfd77fa1 | 3758 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3759 | char *p; |
5a2468f5 | 3760 | |
74ca34ce DJ |
3761 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
3762 | return 0; | |
3763 | ||
3764 | if (reg->pnum == -1) | |
3765 | return 0; | |
3766 | ||
ea9c271d | 3767 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3768 | p = buf + strlen (buf); |
822c9732 | 3769 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3770 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3771 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 3772 | |
74ca34ce DJ |
3773 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
3774 | { | |
3775 | case PACKET_OK: | |
3776 | return 1; | |
3777 | case PACKET_ERROR: | |
3778 | error (_("Could not write register \"%s\""), | |
3779 | gdbarch_register_name (current_gdbarch, reg->regnum)); | |
3780 | case PACKET_UNKNOWN: | |
3781 | return 0; | |
3782 | default: | |
3783 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
3784 | } | |
c906108c SS |
3785 | } |
3786 | ||
23860348 MS |
3787 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3788 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3789 | |
3790 | static void | |
74ca34ce | 3791 | store_registers_using_G (void) |
c906108c | 3792 | { |
d01949b6 | 3793 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3794 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3795 | gdb_byte *regs; |
c906108c SS |
3796 | char *p; |
3797 | ||
193cb69f AC |
3798 | /* Extract all the registers in the regcache copying them into a |
3799 | local buffer. */ | |
3800 | { | |
b323314b | 3801 | int i; |
ea9c271d DJ |
3802 | regs = alloca (rsa->sizeof_g_packet); |
3803 | memset (regs, 0, rsa->sizeof_g_packet); | |
74ca34ce | 3804 | for (i = 0; i < NUM_REGS; i++) |
193cb69f | 3805 | { |
ea9c271d | 3806 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3807 | if (r->in_g_packet) |
822c9732 | 3808 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3809 | } |
3810 | } | |
c906108c SS |
3811 | |
3812 | /* Command describes registers byte by byte, | |
3813 | each byte encoded as two hex characters. */ | |
6d820c5c | 3814 | p = rs->buf; |
193cb69f | 3815 | *p++ = 'G'; |
74ca34ce DJ |
3816 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
3817 | updated. */ | |
3818 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 3819 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3820 | } |
74ca34ce DJ |
3821 | |
3822 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
3823 | of the register cache buffer. FIXME: ignores errors. */ | |
3824 | ||
3825 | static void | |
3826 | remote_store_registers (int regnum) | |
3827 | { | |
3828 | struct remote_state *rs = get_remote_state (); | |
3829 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3830 | int i; | |
3831 | ||
3832 | set_thread (PIDGET (inferior_ptid), 1); | |
3833 | ||
3834 | if (regnum >= 0) | |
3835 | { | |
3836 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3837 | gdb_assert (reg != NULL); | |
3838 | ||
3839 | /* Always prefer to store registers using the 'P' packet if | |
3840 | possible; we often change only a small number of registers. | |
3841 | Sometimes we change a larger number; we'd need help from a | |
3842 | higher layer to know to use 'G'. */ | |
3843 | if (store_register_using_P (reg)) | |
3844 | return; | |
3845 | ||
3846 | /* For now, don't complain if we have no way to write the | |
3847 | register. GDB loses track of unavailable registers too | |
3848 | easily. Some day, this may be an error. We don't have | |
3849 | any way to read the register, either... */ | |
3850 | if (!reg->in_g_packet) | |
3851 | return; | |
3852 | ||
3853 | store_registers_using_G (); | |
3854 | return; | |
3855 | } | |
3856 | ||
3857 | store_registers_using_G (); | |
3858 | ||
3859 | for (i = 0; i < NUM_REGS; i++) | |
3860 | if (!rsa->regs[i].in_g_packet) | |
3861 | if (!store_register_using_P (&rsa->regs[i])) | |
3862 | /* See above for why we do not issue an error here. */ | |
3863 | continue; | |
3864 | } | |
c906108c SS |
3865 | \f |
3866 | ||
3867 | /* Return the number of hex digits in num. */ | |
3868 | ||
3869 | static int | |
fba45db2 | 3870 | hexnumlen (ULONGEST num) |
c906108c SS |
3871 | { |
3872 | int i; | |
3873 | ||
3874 | for (i = 0; num != 0; i++) | |
3875 | num >>= 4; | |
3876 | ||
3877 | return max (i, 1); | |
3878 | } | |
3879 | ||
2df3850c | 3880 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3881 | |
3882 | static int | |
fba45db2 | 3883 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3884 | { |
c906108c | 3885 | int len = hexnumlen (num); |
2df3850c JM |
3886 | return hexnumnstr (buf, num, len); |
3887 | } | |
3888 | ||
c906108c | 3889 | |
2df3850c | 3890 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3891 | |
2df3850c | 3892 | static int |
fba45db2 | 3893 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3894 | { |
3895 | int i; | |
3896 | ||
3897 | buf[width] = '\0'; | |
3898 | ||
3899 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3900 | { |
c5aa993b | 3901 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3902 | num >>= 4; |
3903 | } | |
3904 | ||
2df3850c | 3905 | return width; |
c906108c SS |
3906 | } |
3907 | ||
23860348 | 3908 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3909 | |
3910 | static CORE_ADDR | |
fba45db2 | 3911 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3912 | { |
3913 | if (remote_address_size > 0 | |
3914 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3915 | { | |
3916 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3917 | in a ULONGEST variable. */ |
c906108c SS |
3918 | ULONGEST mask = 1; |
3919 | mask = (mask << remote_address_size) - 1; | |
3920 | addr &= mask; | |
3921 | } | |
3922 | return addr; | |
3923 | } | |
3924 | ||
a31ea83d DJ |
3925 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
3926 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
3927 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
3928 | (which may be more than *OUT_LEN due to escape characters). The | |
3929 | total number of bytes in the output buffer will be at most | |
3930 | OUT_MAXLEN. */ | |
3931 | ||
3932 | static int | |
3933 | remote_escape_output (const gdb_byte *buffer, int len, | |
3934 | gdb_byte *out_buf, int *out_len, | |
3935 | int out_maxlen) | |
3936 | { | |
3937 | int input_index, output_index; | |
3938 | ||
3939 | output_index = 0; | |
3940 | for (input_index = 0; input_index < len; input_index++) | |
3941 | { | |
3942 | gdb_byte b = buffer[input_index]; | |
3943 | ||
3944 | if (b == '$' || b == '#' || b == '}') | |
3945 | { | |
3946 | /* These must be escaped. */ | |
3947 | if (output_index + 2 > out_maxlen) | |
3948 | break; | |
3949 | out_buf[output_index++] = '}'; | |
3950 | out_buf[output_index++] = b ^ 0x20; | |
3951 | } | |
3952 | else | |
3953 | { | |
3954 | if (output_index + 1 > out_maxlen) | |
3955 | break; | |
3956 | out_buf[output_index++] = b; | |
3957 | } | |
3958 | } | |
3959 | ||
3960 | *out_len = input_index; | |
3961 | return output_index; | |
3962 | } | |
3963 | ||
0876f84a DJ |
3964 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
3965 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
3966 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
3967 | ||
3968 | This function reverses remote_escape_output. It allows more | |
3969 | escaped characters than that function does, in particular because | |
3970 | '*' must be escaped to avoid the run-length encoding processing | |
3971 | in reading packets. */ | |
3972 | ||
3973 | static int | |
3974 | remote_unescape_input (const gdb_byte *buffer, int len, | |
3975 | gdb_byte *out_buf, int out_maxlen) | |
3976 | { | |
3977 | int input_index, output_index; | |
3978 | int escaped; | |
3979 | ||
3980 | output_index = 0; | |
3981 | escaped = 0; | |
3982 | for (input_index = 0; input_index < len; input_index++) | |
3983 | { | |
3984 | gdb_byte b = buffer[input_index]; | |
3985 | ||
3986 | if (output_index + 1 > out_maxlen) | |
3987 | { | |
3988 | warning (_("Received too much data from remote target;" | |
3989 | " ignoring overflow.")); | |
3990 | return output_index; | |
3991 | } | |
3992 | ||
3993 | if (escaped) | |
3994 | { | |
3995 | out_buf[output_index++] = b ^ 0x20; | |
3996 | escaped = 0; | |
3997 | } | |
3998 | else if (b == '}') | |
3999 | escaped = 1; | |
4000 | else | |
4001 | out_buf[output_index++] = b; | |
4002 | } | |
4003 | ||
4004 | if (escaped) | |
4005 | error (_("Unmatched escape character in target response.")); | |
4006 | ||
4007 | return output_index; | |
4008 | } | |
4009 | ||
c906108c SS |
4010 | /* Determine whether the remote target supports binary downloading. |
4011 | This is accomplished by sending a no-op memory write of zero length | |
4012 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4013 | the whole packet, since many stubs strip the eighth bit and |
4014 | subsequently compute a wrong checksum, which causes real havoc with | |
4015 | remote_write_bytes. | |
7a292a7a | 4016 | |
96baa820 JM |
4017 | NOTE: This can still lose if the serial line is not eight-bit |
4018 | clean. In cases like this, the user should clear "remote | |
23860348 | 4019 | X-packet". */ |
96baa820 | 4020 | |
c906108c | 4021 | static void |
fba45db2 | 4022 | check_binary_download (CORE_ADDR addr) |
c906108c | 4023 | { |
d01949b6 | 4024 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4025 | |
444abaca | 4026 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4027 | { |
96baa820 JM |
4028 | case PACKET_DISABLE: |
4029 | break; | |
4030 | case PACKET_ENABLE: | |
4031 | break; | |
4032 | case PACKET_SUPPORT_UNKNOWN: | |
4033 | { | |
96baa820 | 4034 | char *p; |
802188a7 | 4035 | |
2e9f7625 | 4036 | p = rs->buf; |
96baa820 JM |
4037 | *p++ = 'X'; |
4038 | p += hexnumstr (p, (ULONGEST) addr); | |
4039 | *p++ = ','; | |
4040 | p += hexnumstr (p, (ULONGEST) 0); | |
4041 | *p++ = ':'; | |
4042 | *p = '\0'; | |
802188a7 | 4043 | |
2e9f7625 | 4044 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4045 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4046 | |
2e9f7625 | 4047 | if (rs->buf[0] == '\0') |
96baa820 JM |
4048 | { |
4049 | if (remote_debug) | |
4050 | fprintf_unfiltered (gdb_stdlog, | |
4051 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4052 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4053 | } |
4054 | else | |
4055 | { | |
4056 | if (remote_debug) | |
4057 | fprintf_unfiltered (gdb_stdlog, | |
4058 | "binary downloading suppported by target\n"); | |
444abaca | 4059 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4060 | } |
4061 | break; | |
4062 | } | |
c906108c SS |
4063 | } |
4064 | } | |
4065 | ||
4066 | /* Write memory data directly to the remote machine. | |
4067 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4068 | HEADER is the starting part of the packet. |
c906108c SS |
4069 | MEMADDR is the address in the remote memory space. |
4070 | MYADDR is the address of the buffer in our space. | |
4071 | LEN is the number of bytes. | |
a76d924d DJ |
4072 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4073 | should send data as binary ('X'), or hex-encoded ('M'). | |
4074 | ||
4075 | The function creates packet of the form | |
4076 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4077 | ||
4078 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4079 | ||
4080 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4081 | are omitted. | |
4082 | ||
4083 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4084 | error. Only transfer a single packet. */ |
c906108c | 4085 | |
a76d924d DJ |
4086 | static int |
4087 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4088 | const gdb_byte *myaddr, int len, | |
4089 | char packet_format, int use_length) | |
c906108c | 4090 | { |
6d820c5c | 4091 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4092 | char *p; |
a76d924d DJ |
4093 | char *plen = NULL; |
4094 | int plenlen = 0; | |
917317f4 JM |
4095 | int todo; |
4096 | int nr_bytes; | |
a257b5bb | 4097 | int payload_size; |
6765f3e5 | 4098 | int payload_length; |
a76d924d DJ |
4099 | int header_length; |
4100 | ||
4101 | if (packet_format != 'X' && packet_format != 'M') | |
4102 | internal_error (__FILE__, __LINE__, | |
4103 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4104 | |
b2182ed2 DJ |
4105 | /* Should this be the selected frame? */ |
4106 | gdbarch_remote_translate_xfer_address (current_gdbarch, | |
4107 | current_regcache, | |
4108 | memaddr, len, | |
4109 | &memaddr, &len); | |
4110 | ||
4111 | if (len <= 0) | |
4112 | return 0; | |
4113 | ||
3de11b2e | 4114 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4115 | |
6d820c5c DJ |
4116 | /* The packet buffer will be large enough for the payload; |
4117 | get_memory_packet_size ensures this. */ | |
a76d924d | 4118 | rs->buf[0] = '\0'; |
c906108c | 4119 | |
a257b5bb | 4120 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4121 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4122 | */ | |
a76d924d DJ |
4123 | payload_size -= strlen ("$,:#NN"); |
4124 | if (!use_length) | |
4125 | /* The comma won't be used. */ | |
4126 | payload_size += 1; | |
4127 | header_length = strlen (header); | |
4128 | payload_size -= header_length; | |
3de11b2e | 4129 | payload_size -= hexnumlen (memaddr); |
c906108c | 4130 | |
a76d924d | 4131 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4132 | |
a76d924d DJ |
4133 | strcat (rs->buf, header); |
4134 | p = rs->buf + strlen (header); | |
4135 | ||
4136 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4137 | if (packet_format == 'X') | |
c906108c | 4138 | { |
23860348 | 4139 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4140 | todo = min (len, payload_size); |
a76d924d DJ |
4141 | if (use_length) |
4142 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4143 | todo = min (todo, payload_size); |
a76d924d DJ |
4144 | } |
4145 | else | |
4146 | { | |
23860348 | 4147 | /* Num bytes that will fit. */ |
a257b5bb | 4148 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4149 | if (use_length) |
4150 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4151 | todo = min (todo, payload_size / 2); |
917317f4 | 4152 | } |
a76d924d | 4153 | |
3de11b2e NS |
4154 | if (todo <= 0) |
4155 | internal_error (__FILE__, __LINE__, | |
4156 | _("minumum packet size too small to write data")); | |
802188a7 | 4157 | |
6765f3e5 DJ |
4158 | /* If we already need another packet, then try to align the end |
4159 | of this packet to a useful boundary. */ | |
4160 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4161 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4162 | ||
a257b5bb | 4163 | /* Append "<memaddr>". */ |
917317f4 JM |
4164 | memaddr = remote_address_masked (memaddr); |
4165 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4166 | |
a76d924d DJ |
4167 | if (use_length) |
4168 | { | |
4169 | /* Append ",". */ | |
4170 | *p++ = ','; | |
802188a7 | 4171 | |
a76d924d DJ |
4172 | /* Append <len>. Retain the location/size of <len>. It may need to |
4173 | be adjusted once the packet body has been created. */ | |
4174 | plen = p; | |
4175 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4176 | p += plenlen; | |
4177 | } | |
a257b5bb AC |
4178 | |
4179 | /* Append ":". */ | |
917317f4 JM |
4180 | *p++ = ':'; |
4181 | *p = '\0'; | |
802188a7 | 4182 | |
a257b5bb | 4183 | /* Append the packet body. */ |
a76d924d | 4184 | if (packet_format == 'X') |
917317f4 | 4185 | { |
917317f4 JM |
4186 | /* Binary mode. Send target system values byte by byte, in |
4187 | increasing byte addresses. Only escape certain critical | |
4188 | characters. */ | |
6765f3e5 DJ |
4189 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4190 | payload_size); | |
4191 | ||
4192 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4193 | a second try to keep the end of the packet aligned. Don't do |
4194 | this if the packet is tiny. */ | |
4195 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4196 | { |
4197 | int new_nr_bytes; | |
4198 | ||
4199 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4200 | - memaddr); | |
4201 | if (new_nr_bytes != nr_bytes) | |
4202 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4203 | p, &nr_bytes, | |
4204 | payload_size); | |
4205 | } | |
4206 | ||
4207 | p += payload_length; | |
a76d924d | 4208 | if (use_length && nr_bytes < todo) |
c906108c | 4209 | { |
802188a7 | 4210 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4211 | and we have actually sent fewer bytes than planned. |
4212 | Fix-up the length field of the packet. Use the same | |
4213 | number of characters as before. */ | |
917317f4 JM |
4214 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4215 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4216 | } |
a76d924d DJ |
4217 | } |
4218 | else | |
4219 | { | |
917317f4 JM |
4220 | /* Normal mode: Send target system values byte by byte, in |
4221 | increasing byte addresses. Each byte is encoded as a two hex | |
4222 | value. */ | |
2644f393 | 4223 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4224 | p += 2 * nr_bytes; |
c906108c | 4225 | } |
802188a7 | 4226 | |
2e9f7625 | 4227 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4228 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4229 | |
2e9f7625 | 4230 | if (rs->buf[0] == 'E') |
917317f4 JM |
4231 | { |
4232 | /* There is no correspondance between what the remote protocol | |
4233 | uses for errors and errno codes. We would like a cleaner way | |
4234 | of representing errors (big enough to include errno codes, | |
4235 | bfd_error codes, and others). But for now just return EIO. */ | |
4236 | errno = EIO; | |
4237 | return 0; | |
4238 | } | |
802188a7 | 4239 | |
23860348 MS |
4240 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4241 | fewer bytes than we'd planned. */ | |
917317f4 | 4242 | return nr_bytes; |
c906108c SS |
4243 | } |
4244 | ||
a76d924d DJ |
4245 | /* Write memory data directly to the remote machine. |
4246 | This does not inform the data cache; the data cache uses this. | |
4247 | MEMADDR is the address in the remote memory space. | |
4248 | MYADDR is the address of the buffer in our space. | |
4249 | LEN is the number of bytes. | |
4250 | ||
4251 | Returns number of bytes transferred, or 0 (setting errno) for | |
4252 | error. Only transfer a single packet. */ | |
4253 | ||
4254 | int | |
4255 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4256 | { | |
4257 | char *packet_format = 0; | |
4258 | ||
4259 | /* Check whether the target supports binary download. */ | |
4260 | check_binary_download (memaddr); | |
4261 | ||
4262 | switch (remote_protocol_packets[PACKET_X].support) | |
4263 | { | |
4264 | case PACKET_ENABLE: | |
4265 | packet_format = "X"; | |
4266 | break; | |
4267 | case PACKET_DISABLE: | |
4268 | packet_format = "M"; | |
4269 | break; | |
4270 | case PACKET_SUPPORT_UNKNOWN: | |
4271 | internal_error (__FILE__, __LINE__, | |
4272 | _("remote_write_bytes: bad internal state")); | |
4273 | default: | |
4274 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4275 | } | |
4276 | ||
4277 | return remote_write_bytes_aux (packet_format, | |
4278 | memaddr, myaddr, len, packet_format[0], 1); | |
4279 | } | |
4280 | ||
c906108c SS |
4281 | /* Read memory data directly from the remote machine. |
4282 | This does not use the data cache; the data cache uses this. | |
4283 | MEMADDR is the address in the remote memory space. | |
4284 | MYADDR is the address of the buffer in our space. | |
4285 | LEN is the number of bytes. | |
4286 | ||
4287 | Returns number of bytes transferred, or 0 for error. */ | |
4288 | ||
917317f4 JM |
4289 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4290 | remote targets) shouldn't attempt to read the entire buffer. | |
4291 | Instead it should read a single packet worth of data and then | |
4292 | return the byte size of that packet to the caller. The caller (its | |
4293 | caller and its callers caller ;-) already contains code for | |
23860348 | 4294 | handling partial reads. */ |
917317f4 | 4295 | |
449092f6 | 4296 | int |
cfd77fa1 | 4297 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4298 | { |
6d820c5c | 4299 | struct remote_state *rs = get_remote_state (); |
23860348 | 4300 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4301 | int origlen; |
4302 | ||
b2182ed2 DJ |
4303 | /* Should this be the selected frame? */ |
4304 | gdbarch_remote_translate_xfer_address (current_gdbarch, | |
4305 | current_regcache, | |
4306 | memaddr, len, | |
4307 | &memaddr, &len); | |
4308 | ||
4309 | if (len <= 0) | |
4310 | return 0; | |
4311 | ||
11cf8741 | 4312 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4313 | /* The packet buffer will be large enough for the payload; |
4314 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4315 | |
4316 | origlen = len; | |
4317 | while (len > 0) | |
4318 | { | |
c906108c SS |
4319 | char *p; |
4320 | int todo; | |
4321 | int i; | |
4322 | ||
c5aa993b | 4323 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4324 | |
4325 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4326 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4327 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4328 | p = rs->buf; |
c906108c SS |
4329 | *p++ = 'm'; |
4330 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4331 | *p++ = ','; | |
4332 | p += hexnumstr (p, (ULONGEST) todo); | |
4333 | *p = '\0'; | |
4334 | ||
2e9f7625 | 4335 | putpkt (rs->buf); |
6d820c5c | 4336 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4337 | |
2e9f7625 DJ |
4338 | if (rs->buf[0] == 'E' |
4339 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4340 | && rs->buf[3] == '\0') | |
c906108c | 4341 | { |
23860348 MS |
4342 | /* There is no correspondance between what the remote |
4343 | protocol uses for errors and errno codes. We would like | |
4344 | a cleaner way of representing errors (big enough to | |
4345 | include errno codes, bfd_error codes, and others). But | |
4346 | for now just return EIO. */ | |
c906108c SS |
4347 | errno = EIO; |
4348 | return 0; | |
4349 | } | |
4350 | ||
c5aa993b JM |
4351 | /* Reply describes memory byte by byte, |
4352 | each byte encoded as two hex characters. */ | |
c906108c | 4353 | |
2e9f7625 | 4354 | p = rs->buf; |
30559e10 | 4355 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4356 | { |
30559e10 | 4357 | /* Reply is short. This means that we were able to read |
23860348 | 4358 | only part of what we wanted to. */ |
30559e10 | 4359 | return i + (origlen - len); |
c906108c SS |
4360 | } |
4361 | myaddr += todo; | |
4362 | memaddr += todo; | |
4363 | len -= todo; | |
4364 | } | |
4365 | return origlen; | |
4366 | } | |
4367 | \f | |
4368 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4369 | transferring to or from debugger address BUFFER. Write to inferior |
4370 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4371 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4372 | |
c906108c | 4373 | static int |
961cb7b5 | 4374 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4375 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4376 | struct target_ops *target) |
c906108c | 4377 | { |
4930751a C |
4378 | int res; |
4379 | ||
4930751a | 4380 | if (should_write) |
b2182ed2 | 4381 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4382 | else |
b2182ed2 | 4383 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4384 | |
4385 | return res; | |
c906108c SS |
4386 | } |
4387 | ||
a76d924d DJ |
4388 | /* Sends a packet with content determined by the printf format string |
4389 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4390 | whether the packet was a success, a failure, or unknown. */ | |
4391 | ||
4392 | enum packet_result | |
4393 | remote_send_printf (const char *format, ...) | |
4394 | { | |
4395 | struct remote_state *rs = get_remote_state (); | |
4396 | int max_size = get_remote_packet_size (); | |
4397 | ||
4398 | va_list ap; | |
4399 | va_start (ap, format); | |
4400 | ||
4401 | rs->buf[0] = '\0'; | |
4402 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4403 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4404 | ||
4405 | if (putpkt (rs->buf) < 0) | |
4406 | error (_("Communication problem with target.")); | |
4407 | ||
4408 | rs->buf[0] = '\0'; | |
4409 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4410 | ||
4411 | return packet_check_result (rs->buf); | |
4412 | } | |
4413 | ||
4414 | static void | |
4415 | restore_remote_timeout (void *p) | |
4416 | { | |
4417 | int value = *(int *)p; | |
4418 | remote_timeout = value; | |
4419 | } | |
4420 | ||
4421 | /* Flash writing can take quite some time. We'll set | |
4422 | effectively infinite timeout for flash operations. | |
4423 | In future, we'll need to decide on a better approach. */ | |
4424 | static const int remote_flash_timeout = 1000; | |
4425 | ||
4426 | static void | |
4427 | remote_flash_erase (struct target_ops *ops, | |
4428 | ULONGEST address, LONGEST length) | |
4429 | { | |
4430 | int saved_remote_timeout = remote_timeout; | |
4431 | enum packet_result ret; | |
4432 | ||
4433 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4434 | &saved_remote_timeout); | |
4435 | remote_timeout = remote_flash_timeout; | |
4436 | ||
4437 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4438 | paddr (address), | |
4439 | phex (length, 4)); | |
4440 | switch (ret) | |
4441 | { | |
4442 | case PACKET_UNKNOWN: | |
4443 | error (_("Remote target does not support flash erase")); | |
4444 | case PACKET_ERROR: | |
4445 | error (_("Error erasing flash with vFlashErase packet")); | |
4446 | default: | |
4447 | break; | |
4448 | } | |
4449 | ||
4450 | do_cleanups (back_to); | |
4451 | } | |
4452 | ||
4453 | static LONGEST | |
4454 | remote_flash_write (struct target_ops *ops, | |
4455 | ULONGEST address, LONGEST length, | |
4456 | const gdb_byte *data) | |
4457 | { | |
4458 | int saved_remote_timeout = remote_timeout; | |
4459 | int ret; | |
4460 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4461 | &saved_remote_timeout); | |
4462 | ||
4463 | remote_timeout = remote_flash_timeout; | |
4464 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4465 | do_cleanups (back_to); | |
4466 | ||
4467 | return ret; | |
4468 | } | |
4469 | ||
4470 | static void | |
4471 | remote_flash_done (struct target_ops *ops) | |
4472 | { | |
4473 | int saved_remote_timeout = remote_timeout; | |
4474 | int ret; | |
4475 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4476 | &saved_remote_timeout); | |
4477 | ||
4478 | remote_timeout = remote_flash_timeout; | |
4479 | ret = remote_send_printf ("vFlashDone"); | |
4480 | do_cleanups (back_to); | |
4481 | ||
4482 | switch (ret) | |
4483 | { | |
4484 | case PACKET_UNKNOWN: | |
4485 | error (_("Remote target does not support vFlashDone")); | |
4486 | case PACKET_ERROR: | |
4487 | error (_("Error finishing flash operation")); | |
4488 | default: | |
4489 | break; | |
4490 | } | |
4491 | } | |
4492 | ||
c906108c | 4493 | static void |
fba45db2 | 4494 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4495 | { |
4496 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4497 | } | |
4498 | \f | |
4499 | /* Stuff for dealing with the packets which are part of this protocol. | |
4500 | See comment at top of file for details. */ | |
4501 | ||
0876f84a | 4502 | /* Read a single character from the remote end. */ |
c906108c SS |
4503 | |
4504 | static int | |
fba45db2 | 4505 | readchar (int timeout) |
c906108c SS |
4506 | { |
4507 | int ch; | |
4508 | ||
2cd58942 | 4509 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4510 | |
2acceee2 | 4511 | if (ch >= 0) |
0876f84a | 4512 | return ch; |
2acceee2 JM |
4513 | |
4514 | switch ((enum serial_rc) ch) | |
c906108c SS |
4515 | { |
4516 | case SERIAL_EOF: | |
2acceee2 | 4517 | target_mourn_inferior (); |
8a3fe4f8 | 4518 | error (_("Remote connection closed")); |
2acceee2 | 4519 | /* no return */ |
c906108c | 4520 | case SERIAL_ERROR: |
e2e0b3e5 | 4521 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4522 | /* no return */ |
c906108c | 4523 | case SERIAL_TIMEOUT: |
2acceee2 | 4524 | break; |
c906108c | 4525 | } |
2acceee2 | 4526 | return ch; |
c906108c SS |
4527 | } |
4528 | ||
6d820c5c DJ |
4529 | /* Send the command in *BUF to the remote machine, and read the reply |
4530 | into *BUF. Report an error if we get an error reply. Resize | |
4531 | *BUF using xrealloc if necessary to hold the result, and update | |
4532 | *SIZEOF_BUF. */ | |
c906108c SS |
4533 | |
4534 | static void | |
6d820c5c DJ |
4535 | remote_send (char **buf, |
4536 | long *sizeof_buf) | |
c906108c | 4537 | { |
6d820c5c | 4538 | putpkt (*buf); |
c2d11a7d | 4539 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4540 | |
6d820c5c DJ |
4541 | if ((*buf)[0] == 'E') |
4542 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4543 | } |
4544 | ||
4545 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4546 | string notation. */ | |
4547 | ||
4548 | static void | |
fba45db2 | 4549 | print_packet (char *buf) |
c906108c SS |
4550 | { |
4551 | puts_filtered ("\""); | |
43e526b9 | 4552 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4553 | puts_filtered ("\""); |
4554 | } | |
4555 | ||
4556 | int | |
fba45db2 | 4557 | putpkt (char *buf) |
c906108c SS |
4558 | { |
4559 | return putpkt_binary (buf, strlen (buf)); | |
4560 | } | |
4561 | ||
4562 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4563 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4564 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4565 | and for a possible /0 if we are debugging (remote_debug) and want |
4566 | to print the sent packet as a string. */ | |
c906108c SS |
4567 | |
4568 | static int | |
fba45db2 | 4569 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
4570 | { |
4571 | int i; | |
4572 | unsigned char csum = 0; | |
11cf8741 | 4573 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4574 | |
c906108c SS |
4575 | int ch; |
4576 | int tcount = 0; | |
4577 | char *p; | |
4578 | ||
4579 | /* Copy the packet into buffer BUF2, encapsulating it | |
4580 | and giving it a checksum. */ | |
4581 | ||
c906108c SS |
4582 | p = buf2; |
4583 | *p++ = '$'; | |
4584 | ||
4585 | for (i = 0; i < cnt; i++) | |
4586 | { | |
4587 | csum += buf[i]; | |
4588 | *p++ = buf[i]; | |
4589 | } | |
4590 | *p++ = '#'; | |
4591 | *p++ = tohex ((csum >> 4) & 0xf); | |
4592 | *p++ = tohex (csum & 0xf); | |
4593 | ||
4594 | /* Send it over and over until we get a positive ack. */ | |
4595 | ||
4596 | while (1) | |
4597 | { | |
4598 | int started_error_output = 0; | |
4599 | ||
4600 | if (remote_debug) | |
4601 | { | |
4602 | *p = '\0'; | |
43e526b9 JM |
4603 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4604 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4605 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4606 | gdb_flush (gdb_stdlog); |
c906108c | 4607 | } |
2cd58942 | 4608 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4609 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4610 | |
23860348 | 4611 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4612 | while (1) |
4613 | { | |
4614 | ch = readchar (remote_timeout); | |
4615 | ||
c5aa993b | 4616 | if (remote_debug) |
c906108c SS |
4617 | { |
4618 | switch (ch) | |
4619 | { | |
4620 | case '+': | |
1216fa2c | 4621 | case '-': |
c906108c SS |
4622 | case SERIAL_TIMEOUT: |
4623 | case '$': | |
4624 | if (started_error_output) | |
4625 | { | |
4626 | putchar_unfiltered ('\n'); | |
4627 | started_error_output = 0; | |
4628 | } | |
4629 | } | |
4630 | } | |
4631 | ||
4632 | switch (ch) | |
4633 | { | |
4634 | case '+': | |
4635 | if (remote_debug) | |
0f71a2f6 | 4636 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4637 | return 1; |
1216fa2c AC |
4638 | case '-': |
4639 | if (remote_debug) | |
4640 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4641 | case SERIAL_TIMEOUT: |
c5aa993b | 4642 | tcount++; |
c906108c SS |
4643 | if (tcount > 3) |
4644 | return 0; | |
23860348 | 4645 | break; /* Retransmit buffer. */ |
c906108c SS |
4646 | case '$': |
4647 | { | |
40e3f985 | 4648 | if (remote_debug) |
2bc416ba | 4649 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4650 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4651 | /* It's probably an old response sent because an ACK |
4652 | was lost. Gobble up the packet and ack it so it | |
4653 | doesn't get retransmitted when we resend this | |
4654 | packet. */ | |
6d820c5c | 4655 | skip_frame (); |
d6f7abdf | 4656 | serial_write (remote_desc, "+", 1); |
23860348 | 4657 | continue; /* Now, go look for +. */ |
c906108c SS |
4658 | } |
4659 | default: | |
4660 | if (remote_debug) | |
4661 | { | |
4662 | if (!started_error_output) | |
4663 | { | |
4664 | started_error_output = 1; | |
0f71a2f6 | 4665 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4666 | } |
0f71a2f6 | 4667 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4668 | } |
4669 | continue; | |
4670 | } | |
23860348 | 4671 | break; /* Here to retransmit. */ |
c906108c SS |
4672 | } |
4673 | ||
4674 | #if 0 | |
4675 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4676 | able to get out next time we call QUIT, without anything as |
4677 | violent as interrupt_query. If we want to provide a way out of | |
4678 | here without getting to the next QUIT, it should be based on | |
4679 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4680 | if (quit_flag) |
4681 | { | |
4682 | quit_flag = 0; | |
4683 | interrupt_query (); | |
4684 | } | |
4685 | #endif | |
4686 | } | |
4687 | } | |
4688 | ||
6d820c5c DJ |
4689 | /* Come here after finding the start of a frame when we expected an |
4690 | ack. Do our best to discard the rest of this packet. */ | |
4691 | ||
4692 | static void | |
4693 | skip_frame (void) | |
4694 | { | |
4695 | int c; | |
4696 | ||
4697 | while (1) | |
4698 | { | |
4699 | c = readchar (remote_timeout); | |
4700 | switch (c) | |
4701 | { | |
4702 | case SERIAL_TIMEOUT: | |
4703 | /* Nothing we can do. */ | |
4704 | return; | |
4705 | case '#': | |
4706 | /* Discard the two bytes of checksum and stop. */ | |
4707 | c = readchar (remote_timeout); | |
4708 | if (c >= 0) | |
4709 | c = readchar (remote_timeout); | |
4710 | ||
4711 | return; | |
4712 | case '*': /* Run length encoding. */ | |
4713 | /* Discard the repeat count. */ | |
4714 | c = readchar (remote_timeout); | |
4715 | if (c < 0) | |
4716 | return; | |
4717 | break; | |
4718 | default: | |
4719 | /* A regular character. */ | |
4720 | break; | |
4721 | } | |
4722 | } | |
4723 | } | |
4724 | ||
c906108c | 4725 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4726 | into *BUF, verifying the checksum, length, and handling run-length |
4727 | compression. NUL terminate the buffer. If there is not enough room, | |
4728 | expand *BUF using xrealloc. | |
c906108c | 4729 | |
c2d11a7d JM |
4730 | Returns -1 on error, number of characters in buffer (ignoring the |
4731 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4732 | SERIAL status indications). */ |
c2d11a7d JM |
4733 | |
4734 | static long | |
6d820c5c DJ |
4735 | read_frame (char **buf_p, |
4736 | long *sizeof_buf) | |
c906108c SS |
4737 | { |
4738 | unsigned char csum; | |
c2d11a7d | 4739 | long bc; |
c906108c | 4740 | int c; |
6d820c5c | 4741 | char *buf = *buf_p; |
c906108c SS |
4742 | |
4743 | csum = 0; | |
c2d11a7d | 4744 | bc = 0; |
c906108c SS |
4745 | |
4746 | while (1) | |
4747 | { | |
4748 | c = readchar (remote_timeout); | |
c906108c SS |
4749 | switch (c) |
4750 | { | |
4751 | case SERIAL_TIMEOUT: | |
4752 | if (remote_debug) | |
0f71a2f6 | 4753 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4754 | return -1; |
c906108c SS |
4755 | case '$': |
4756 | if (remote_debug) | |
0f71a2f6 JM |
4757 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4758 | gdb_stdlog); | |
23860348 | 4759 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4760 | case '#': |
4761 | { | |
4762 | unsigned char pktcsum; | |
e1b09194 AC |
4763 | int check_0 = 0; |
4764 | int check_1 = 0; | |
c906108c | 4765 | |
c2d11a7d | 4766 | buf[bc] = '\0'; |
c906108c | 4767 | |
e1b09194 AC |
4768 | check_0 = readchar (remote_timeout); |
4769 | if (check_0 >= 0) | |
4770 | check_1 = readchar (remote_timeout); | |
802188a7 | 4771 | |
e1b09194 AC |
4772 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4773 | { | |
4774 | if (remote_debug) | |
2bc416ba | 4775 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 4776 | gdb_stdlog); |
e1b09194 AC |
4777 | return -1; |
4778 | } | |
4779 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4780 | { |
4781 | if (remote_debug) | |
2bc416ba | 4782 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 4783 | gdb_stdlog); |
40e3f985 FN |
4784 | return -1; |
4785 | } | |
c906108c | 4786 | |
e1b09194 | 4787 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4788 | if (csum == pktcsum) |
c2d11a7d | 4789 | return bc; |
c906108c | 4790 | |
c5aa993b | 4791 | if (remote_debug) |
c906108c | 4792 | { |
0f71a2f6 | 4793 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4794 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 4795 | pktcsum, csum); |
0876f84a | 4796 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 4797 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 4798 | } |
c2d11a7d | 4799 | /* Number of characters in buffer ignoring trailing |
23860348 | 4800 | NULL. */ |
c2d11a7d | 4801 | return -1; |
c906108c | 4802 | } |
23860348 | 4803 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4804 | { |
4805 | int repeat; | |
4806 | csum += c; | |
c906108c | 4807 | |
b4501125 AC |
4808 | c = readchar (remote_timeout); |
4809 | csum += c; | |
23860348 | 4810 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4811 | |
23860348 | 4812 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4813 | |
6d820c5c | 4814 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4815 | { |
6d820c5c DJ |
4816 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4817 | { | |
4818 | /* Make some more room in the buffer. */ | |
4819 | *sizeof_buf += repeat; | |
4820 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4821 | buf = *buf_p; | |
4822 | } | |
4823 | ||
c2d11a7d JM |
4824 | memset (&buf[bc], buf[bc - 1], repeat); |
4825 | bc += repeat; | |
c2c6d25f JM |
4826 | continue; |
4827 | } | |
4828 | ||
c2d11a7d | 4829 | buf[bc] = '\0'; |
6d820c5c | 4830 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4831 | return -1; |
c2c6d25f | 4832 | } |
c906108c | 4833 | default: |
6d820c5c | 4834 | if (bc >= *sizeof_buf - 1) |
c906108c | 4835 | { |
6d820c5c DJ |
4836 | /* Make some more room in the buffer. */ |
4837 | *sizeof_buf *= 2; | |
4838 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4839 | buf = *buf_p; | |
c906108c SS |
4840 | } |
4841 | ||
6d820c5c DJ |
4842 | buf[bc++] = c; |
4843 | csum += c; | |
4844 | continue; | |
c906108c SS |
4845 | } |
4846 | } | |
4847 | } | |
4848 | ||
4849 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4850 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4851 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4852 | rather than timing out; this is used (in synchronous mode) to wait | |
4853 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4854 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4855 | don't have to change all the calls to getpkt to deal with the | |
4856 | return value, because at the moment I don't know what the right | |
23860348 | 4857 | thing to do it for those. */ |
c906108c | 4858 | void |
6d820c5c DJ |
4859 | getpkt (char **buf, |
4860 | long *sizeof_buf, | |
c2d11a7d | 4861 | int forever) |
d9fcf2fb JM |
4862 | { |
4863 | int timed_out; | |
4864 | ||
4865 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4866 | } | |
4867 | ||
4868 | ||
4869 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4870 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4871 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4872 | rather than timing out; this is used (in synchronous mode) to wait | |
4873 | for a target that is is executing user code to stop. If FOREVER == | |
4874 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
4875 | indication of this to the caller. Otherwise return the number |
4876 | of bytes read. */ | |
3172dc30 | 4877 | static int |
6d820c5c | 4878 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4879 | { |
4880 | int c; | |
4881 | int tries; | |
4882 | int timeout; | |
4883 | int val; | |
4884 | ||
6d820c5c | 4885 | strcpy (*buf, "timeout"); |
c906108c SS |
4886 | |
4887 | if (forever) | |
4888 | { | |
c906108c | 4889 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4890 | } |
4891 | ||
4892 | else | |
4893 | timeout = remote_timeout; | |
4894 | ||
4895 | #define MAX_TRIES 3 | |
4896 | ||
4897 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4898 | { | |
4899 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4900 | continuously, but if it pauses, we'll get a zero from |
4901 | readchar because of timeout. Then we'll count that as a | |
4902 | retry. */ | |
c906108c | 4903 | |
23860348 MS |
4904 | /* Note that we will only wait forever prior to the start of a |
4905 | packet. After that, we expect characters to arrive at a | |
4906 | brisk pace. They should show up within remote_timeout | |
4907 | intervals. */ | |
c906108c SS |
4908 | |
4909 | do | |
4910 | { | |
4911 | c = readchar (timeout); | |
4912 | ||
4913 | if (c == SERIAL_TIMEOUT) | |
4914 | { | |
23860348 | 4915 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4916 | { |
2acceee2 | 4917 | QUIT; |
c906108c | 4918 | target_mourn_inferior (); |
8a3fe4f8 | 4919 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4920 | } |
c906108c | 4921 | if (remote_debug) |
0f71a2f6 | 4922 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4923 | goto retry; |
4924 | } | |
4925 | } | |
4926 | while (c != '$'); | |
4927 | ||
4928 | /* We've found the start of a packet, now collect the data. */ | |
4929 | ||
c2d11a7d | 4930 | val = read_frame (buf, sizeof_buf); |
c906108c | 4931 | |
c2d11a7d | 4932 | if (val >= 0) |
c906108c SS |
4933 | { |
4934 | if (remote_debug) | |
43e526b9 JM |
4935 | { |
4936 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 4937 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
4938 | fprintf_unfiltered (gdb_stdlog, "\n"); |
4939 | } | |
2cd58942 | 4940 | serial_write (remote_desc, "+", 1); |
0876f84a | 4941 | return val; |
c906108c SS |
4942 | } |
4943 | ||
4944 | /* Try the whole thing again. */ | |
4945 | retry: | |
2cd58942 | 4946 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4947 | } |
4948 | ||
2bc416ba | 4949 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 4950 | Give up. */ |
c906108c | 4951 | |
a3f17187 | 4952 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4953 | serial_write (remote_desc, "+", 1); |
0876f84a | 4954 | return -1; |
c906108c SS |
4955 | } |
4956 | \f | |
4957 | static void | |
fba45db2 | 4958 | remote_kill (void) |
c906108c SS |
4959 | { |
4960 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4961 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4962 | if (kill_kludge) | |
4963 | { | |
4964 | kill_kludge = 0; | |
4965 | target_mourn_inferior (); | |
4966 | return; | |
4967 | } | |
4968 | ||
4969 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4970 | speaking terms with the remote system. */ | |
c5aa993b | 4971 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4972 | |
4973 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4974 | we do or not. For the existing stubs, kill is a noop. */ | |
4975 | target_mourn_inferior (); | |
4976 | } | |
4977 | ||
23860348 | 4978 | /* Async version of remote_kill. */ |
43ff13b4 | 4979 | static void |
fba45db2 | 4980 | remote_async_kill (void) |
43ff13b4 | 4981 | { |
23860348 | 4982 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4983 | if (target_is_async_p ()) |
2cd58942 | 4984 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4985 | |
4986 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4987 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4988 | if (kill_kludge) | |
4989 | { | |
4990 | kill_kludge = 0; | |
4991 | target_mourn_inferior (); | |
4992 | return; | |
4993 | } | |
4994 | ||
23860348 MS |
4995 | /* Use catch_errors so the user can quit from gdb even when we |
4996 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4997 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4998 | |
4999 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5000 | we do or not. For the existing stubs, kill is a noop. */ | |
5001 | target_mourn_inferior (); | |
5002 | } | |
5003 | ||
c906108c | 5004 | static void |
fba45db2 | 5005 | remote_mourn (void) |
c906108c SS |
5006 | { |
5007 | remote_mourn_1 (&remote_ops); | |
5008 | } | |
5009 | ||
53a5351d | 5010 | static void |
fba45db2 | 5011 | remote_async_mourn (void) |
53a5351d JM |
5012 | { |
5013 | remote_mourn_1 (&remote_async_ops); | |
5014 | } | |
5015 | ||
c906108c | 5016 | static void |
fba45db2 | 5017 | extended_remote_mourn (void) |
c906108c SS |
5018 | { |
5019 | /* We do _not_ want to mourn the target like this; this will | |
5020 | remove the extended remote target from the target stack, | |
802188a7 | 5021 | and the next time the user says "run" it'll fail. |
c906108c SS |
5022 | |
5023 | FIXME: What is the right thing to do here? */ | |
5024 | #if 0 | |
5025 | remote_mourn_1 (&extended_remote_ops); | |
5026 | #endif | |
5027 | } | |
5028 | ||
5029 | /* Worker function for remote_mourn. */ | |
5030 | static void | |
fba45db2 | 5031 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
5032 | { |
5033 | unpush_target (target); | |
5034 | generic_mourn_inferior (); | |
5035 | } | |
5036 | ||
5037 | /* In the extended protocol we want to be able to do things like | |
5038 | "run" and have them basically work as expected. So we need | |
802188a7 | 5039 | a special create_inferior function. |
c906108c SS |
5040 | |
5041 | FIXME: One day add support for changing the exec file | |
5042 | we're debugging, arguments and an environment. */ | |
5043 | ||
5044 | static void | |
23860348 MS |
5045 | extended_remote_create_inferior (char *exec_file, char *args, |
5046 | char **env, int from_tty) | |
c906108c SS |
5047 | { |
5048 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5049 | the remote server. */ | |
5050 | remove_breakpoints (); | |
5051 | ||
5052 | /* Now restart the remote server. */ | |
5053 | extended_remote_restart (); | |
5054 | ||
424163ea DJ |
5055 | /* NOTE: We don't need to recheck for a target description here; but |
5056 | if we gain the ability to switch the remote executable we may | |
5057 | need to, if for instance we are running a process which requested | |
5058 | different emulated hardware from the operating system. A | |
5059 | concrete example of this is ARM GNU/Linux, where some binaries | |
5060 | will have a legacy FPA coprocessor emulated and others may have | |
5061 | access to a hardware VFP unit. */ | |
5062 | ||
c906108c SS |
5063 | /* Now put the breakpoints back in. This way we're safe if the |
5064 | restart function works via a unix fork on the remote side. */ | |
5065 | insert_breakpoints (); | |
5066 | ||
5067 | /* Clean up from the last time we were running. */ | |
5068 | clear_proceed_status (); | |
c906108c SS |
5069 | } |
5070 | ||
23860348 | 5071 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 5072 | static void |
23860348 MS |
5073 | extended_remote_async_create_inferior (char *exec_file, char *args, |
5074 | char **env, int from_tty) | |
43ff13b4 JM |
5075 | { |
5076 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5077 | the remote server. */ | |
5078 | remove_breakpoints (); | |
5079 | ||
5080 | /* If running asynchronously, register the target file descriptor | |
23860348 | 5081 | with the event loop. */ |
362646f5 | 5082 | if (target_can_async_p ()) |
2acceee2 | 5083 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5084 | |
5085 | /* Now restart the remote server. */ | |
5086 | extended_remote_restart (); | |
5087 | ||
424163ea DJ |
5088 | /* NOTE: We don't need to recheck for a target description here; but |
5089 | if we gain the ability to switch the remote executable we may | |
5090 | need to, if for instance we are running a process which requested | |
5091 | different emulated hardware from the operating system. A | |
5092 | concrete example of this is ARM GNU/Linux, where some binaries | |
5093 | will have a legacy FPA coprocessor emulated and others may have | |
5094 | access to a hardware VFP unit. */ | |
5095 | ||
43ff13b4 JM |
5096 | /* Now put the breakpoints back in. This way we're safe if the |
5097 | restart function works via a unix fork on the remote side. */ | |
5098 | insert_breakpoints (); | |
5099 | ||
5100 | /* Clean up from the last time we were running. */ | |
5101 | clear_proceed_status (); | |
43ff13b4 | 5102 | } |
c906108c | 5103 | \f |
c5aa993b | 5104 | |
aaab4dba | 5105 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
5106 | instruction than other targets; in those use |
5107 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
5108 | Also, bi-endian targets may define | |
5109 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
5110 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
5111 | just call the standard routines that are in mem-break.c. */ | |
5112 | ||
5113 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
5114 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
5115 | the ARCH-OS-tdep.c code can override the default. */ | |
5116 | ||
5117 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
5118 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
5119 | #endif |
5120 | ||
7fec2c59 | 5121 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
5122 | |
5123 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
5124 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
5125 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
5126 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
5127 | #endif |
5128 | ||
7fec2c59 AC |
5129 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
5130 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 5131 | |
7fec2c59 | 5132 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 5133 | |
8181d85f DJ |
5134 | /* Insert a breakpoint. On targets that have software breakpoint |
5135 | support, we ask the remote target to do the work; on targets | |
5136 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5137 | |
5138 | static int | |
8181d85f | 5139 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5140 | { |
8181d85f | 5141 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5142 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 5143 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 5144 | int val; |
802188a7 | 5145 | #endif |
96baa820 | 5146 | |
d471ea57 AC |
5147 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5148 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5149 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5150 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5151 | |
444abaca | 5152 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5153 | { |
6d820c5c | 5154 | char *p = rs->buf; |
802188a7 | 5155 | |
96baa820 JM |
5156 | *(p++) = 'Z'; |
5157 | *(p++) = '0'; | |
5158 | *(p++) = ','; | |
8181d85f DJ |
5159 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
5160 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); | |
5161 | p += hexnumstr (p, addr); | |
5162 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5163 | |
6d820c5c DJ |
5164 | putpkt (rs->buf); |
5165 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5166 | |
6d820c5c | 5167 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5168 | { |
d471ea57 AC |
5169 | case PACKET_ERROR: |
5170 | return -1; | |
5171 | case PACKET_OK: | |
5172 | return 0; | |
5173 | case PACKET_UNKNOWN: | |
5174 | break; | |
96baa820 JM |
5175 | } |
5176 | } | |
c906108c | 5177 | |
802188a7 | 5178 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
5179 | bp_tgt->placed_size = bp_tgt->shadow_len = sizeof big_break_insn; |
5180 | val = target_read_memory (addr, bp_tgt->shadow_contents, bp_tgt->shadow_len); | |
c906108c SS |
5181 | |
5182 | if (val == 0) | |
5183 | { | |
d7449b42 | 5184 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
5185 | val = target_write_memory (addr, (char *) big_break_insn, |
5186 | sizeof big_break_insn); | |
5187 | else | |
5188 | val = target_write_memory (addr, (char *) little_break_insn, | |
5189 | sizeof little_break_insn); | |
5190 | } | |
5191 | ||
5192 | return val; | |
5193 | #else | |
8181d85f | 5194 | return memory_insert_breakpoint (bp_tgt); |
7fec2c59 | 5195 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
5196 | } |
5197 | ||
5198 | static int | |
8181d85f | 5199 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5200 | { |
8181d85f | 5201 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5202 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5203 | int bp_size; |
5204 | ||
444abaca | 5205 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5206 | { |
6d820c5c | 5207 | char *p = rs->buf; |
802188a7 | 5208 | |
96baa820 JM |
5209 | *(p++) = 'z'; |
5210 | *(p++) = '0'; | |
5211 | *(p++) = ','; | |
5212 | ||
8181d85f DJ |
5213 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5214 | p += hexnumstr (p, addr); | |
5215 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5216 | |
6d820c5c DJ |
5217 | putpkt (rs->buf); |
5218 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5219 | |
6d820c5c | 5220 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5221 | } |
5222 | ||
7fec2c59 | 5223 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
5224 | return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents, |
5225 | bp_tgt->shadow_len); | |
c906108c | 5226 | #else |
8181d85f | 5227 | return memory_remove_breakpoint (bp_tgt); |
7fec2c59 | 5228 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
5229 | } |
5230 | ||
d471ea57 AC |
5231 | static int |
5232 | watchpoint_to_Z_packet (int type) | |
5233 | { | |
5234 | switch (type) | |
5235 | { | |
5236 | case hw_write: | |
bb858e6a | 5237 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5238 | break; |
5239 | case hw_read: | |
bb858e6a | 5240 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5241 | break; |
5242 | case hw_access: | |
bb858e6a | 5243 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5244 | break; |
5245 | default: | |
8e65ff28 | 5246 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5247 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5248 | } |
5249 | } | |
5250 | ||
3c3bea1c | 5251 | static int |
fba45db2 | 5252 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5253 | { |
d01949b6 | 5254 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5255 | char *p; |
d471ea57 | 5256 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5257 | |
444abaca | 5258 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5259 | return -1; |
802188a7 | 5260 | |
6d820c5c DJ |
5261 | sprintf (rs->buf, "Z%x,", packet); |
5262 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5263 | addr = remote_address_masked (addr); |
5264 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5265 | sprintf (p, ",%x", len); |
802188a7 | 5266 | |
6d820c5c DJ |
5267 | putpkt (rs->buf); |
5268 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5269 | |
6d820c5c | 5270 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5271 | { |
5272 | case PACKET_ERROR: | |
5273 | case PACKET_UNKNOWN: | |
5274 | return -1; | |
5275 | case PACKET_OK: | |
5276 | return 0; | |
5277 | } | |
8e65ff28 | 5278 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5279 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5280 | } |
5281 | ||
d471ea57 | 5282 | |
3c3bea1c | 5283 | static int |
fba45db2 | 5284 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5285 | { |
d01949b6 | 5286 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5287 | char *p; |
d471ea57 AC |
5288 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5289 | ||
444abaca | 5290 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5291 | return -1; |
802188a7 | 5292 | |
6d820c5c DJ |
5293 | sprintf (rs->buf, "z%x,", packet); |
5294 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5295 | addr = remote_address_masked (addr); |
5296 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5297 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5298 | putpkt (rs->buf); |
5299 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5300 | |
6d820c5c | 5301 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5302 | { |
5303 | case PACKET_ERROR: | |
5304 | case PACKET_UNKNOWN: | |
5305 | return -1; | |
5306 | case PACKET_OK: | |
5307 | return 0; | |
5308 | } | |
8e65ff28 | 5309 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5310 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5311 | } |
5312 | ||
3c3bea1c | 5313 | |
501eef12 AC |
5314 | int remote_hw_watchpoint_limit = -1; |
5315 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5316 | |
b9362cc7 | 5317 | static int |
3c3bea1c | 5318 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5319 | { |
3c3bea1c GS |
5320 | if (type == bp_hardware_breakpoint) |
5321 | { | |
5322 | if (remote_hw_breakpoint_limit == 0) | |
5323 | return 0; | |
501eef12 AC |
5324 | else if (remote_hw_breakpoint_limit < 0) |
5325 | return 1; | |
3c3bea1c GS |
5326 | else if (cnt <= remote_hw_breakpoint_limit) |
5327 | return 1; | |
5328 | } | |
5329 | else | |
5330 | { | |
5331 | if (remote_hw_watchpoint_limit == 0) | |
5332 | return 0; | |
501eef12 AC |
5333 | else if (remote_hw_watchpoint_limit < 0) |
5334 | return 1; | |
3c3bea1c GS |
5335 | else if (ot) |
5336 | return -1; | |
5337 | else if (cnt <= remote_hw_watchpoint_limit) | |
5338 | return 1; | |
5339 | } | |
5340 | return -1; | |
5341 | } | |
5342 | ||
b9362cc7 | 5343 | static int |
3c3bea1c GS |
5344 | remote_stopped_by_watchpoint (void) |
5345 | { | |
5346 | return remote_stopped_by_watchpoint_p; | |
5347 | } | |
5348 | ||
7270d8f2 OF |
5349 | extern int stepped_after_stopped_by_watchpoint; |
5350 | ||
4aa7a7f5 JJ |
5351 | static int |
5352 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5353 | { |
4aa7a7f5 | 5354 | int rc = 0; |
7270d8f2 OF |
5355 | if (remote_stopped_by_watchpoint () |
5356 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
5357 | { |
5358 | *addr_p = remote_watch_data_address; | |
5359 | rc = 1; | |
5360 | } | |
5361 | ||
5362 | return rc; | |
3c3bea1c GS |
5363 | } |
5364 | ||
5365 | ||
5366 | static int | |
8181d85f | 5367 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5368 | { |
8181d85f | 5369 | CORE_ADDR addr; |
d01949b6 | 5370 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5371 | char *p = rs->buf; |
802188a7 | 5372 | |
c8189ed1 | 5373 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5374 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5375 | |
8181d85f | 5376 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 5377 | |
444abaca | 5378 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5379 | return -1; |
2bc416ba | 5380 | |
96baa820 JM |
5381 | *(p++) = 'Z'; |
5382 | *(p++) = '1'; | |
5383 | *(p++) = ','; | |
802188a7 | 5384 | |
8181d85f | 5385 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5386 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5387 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5388 | |
6d820c5c DJ |
5389 | putpkt (rs->buf); |
5390 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5391 | |
6d820c5c | 5392 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5393 | { |
5394 | case PACKET_ERROR: | |
5395 | case PACKET_UNKNOWN: | |
5396 | return -1; | |
5397 | case PACKET_OK: | |
5398 | return 0; | |
5399 | } | |
8e65ff28 | 5400 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5401 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5402 | } |
5403 | ||
d471ea57 | 5404 | |
802188a7 | 5405 | static int |
8181d85f | 5406 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5407 | { |
8181d85f | 5408 | CORE_ADDR addr; |
d01949b6 | 5409 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5410 | char *p = rs->buf; |
c8189ed1 | 5411 | |
444abaca | 5412 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5413 | return -1; |
802188a7 | 5414 | |
96baa820 JM |
5415 | *(p++) = 'z'; |
5416 | *(p++) = '1'; | |
5417 | *(p++) = ','; | |
802188a7 | 5418 | |
8181d85f | 5419 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5420 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5421 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5422 | |
6d820c5c DJ |
5423 | putpkt (rs->buf); |
5424 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5425 | |
6d820c5c | 5426 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5427 | { |
5428 | case PACKET_ERROR: | |
5429 | case PACKET_UNKNOWN: | |
5430 | return -1; | |
5431 | case PACKET_OK: | |
5432 | return 0; | |
5433 | } | |
8e65ff28 | 5434 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5435 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5436 | } |
96baa820 | 5437 | |
c906108c SS |
5438 | /* Some targets are only capable of doing downloads, and afterwards |
5439 | they switch to the remote serial protocol. This function provides | |
5440 | a clean way to get from the download target to the remote target. | |
5441 | It's basically just a wrapper so that we don't have to expose any | |
5442 | of the internal workings of remote.c. | |
5443 | ||
5444 | Prior to calling this routine, you should shutdown the current | |
5445 | target code, else you will get the "A program is being debugged | |
5446 | already..." message. Usually a call to pop_target() suffices. */ | |
5447 | ||
5448 | void | |
fba45db2 | 5449 | push_remote_target (char *name, int from_tty) |
c906108c | 5450 | { |
a3f17187 | 5451 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5452 | remote_open (name, from_tty); |
5453 | } | |
5454 | ||
23860348 | 5455 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5456 | |
c5aa993b JM |
5457 | static unsigned long crc32_table[256] = |
5458 | {0, 0}; | |
c906108c SS |
5459 | |
5460 | static unsigned long | |
fba45db2 | 5461 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5462 | { |
c5aa993b | 5463 | if (!crc32_table[1]) |
c906108c | 5464 | { |
23860348 | 5465 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5466 | int i, j; |
5467 | unsigned int c; | |
5468 | ||
5469 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5470 | { |
5471 | for (c = i << 24, j = 8; j > 0; --j) | |
5472 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5473 | crc32_table[i] = c; | |
5474 | } | |
c906108c SS |
5475 | } |
5476 | ||
5477 | while (len--) | |
5478 | { | |
5479 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5480 | buf++; | |
5481 | } | |
5482 | return crc; | |
5483 | } | |
5484 | ||
5485 | /* compare-sections command | |
5486 | ||
5487 | With no arguments, compares each loadable section in the exec bfd | |
5488 | with the same memory range on the target, and reports mismatches. | |
5489 | Useful for verifying the image on the target against the exec file. | |
5490 | Depends on the target understanding the new "qCRC:" request. */ | |
5491 | ||
e514a9d6 JM |
5492 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5493 | target method (target verify memory) and generic version of the | |
5494 | actual command. This will allow other high-level code (especially | |
23860348 | 5495 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5496 | |
c906108c | 5497 | static void |
fba45db2 | 5498 | compare_sections_command (char *args, int from_tty) |
c906108c | 5499 | { |
d01949b6 | 5500 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5501 | asection *s; |
5502 | unsigned long host_crc, target_crc; | |
5503 | extern bfd *exec_bfd; | |
5504 | struct cleanup *old_chain; | |
085dd6e6 JM |
5505 | char *tmp; |
5506 | char *sectdata; | |
ce359b09 | 5507 | const char *sectname; |
c906108c SS |
5508 | bfd_size_type size; |
5509 | bfd_vma lma; | |
5510 | int matched = 0; | |
5511 | int mismatched = 0; | |
5512 | ||
5513 | if (!exec_bfd) | |
8a3fe4f8 | 5514 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5515 | if (!current_target.to_shortname || |
5516 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5517 | error (_("command can only be used with remote target")); |
c906108c | 5518 | |
c5aa993b | 5519 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5520 | { |
5521 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5522 | continue; /* skip non-loadable section */ |
c906108c | 5523 | |
2c500098 | 5524 | size = bfd_get_section_size (s); |
c906108c | 5525 | if (size == 0) |
c5aa993b | 5526 | continue; /* skip zero-length section */ |
c906108c | 5527 | |
ce359b09 | 5528 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5529 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5530 | continue; /* not the section selected by user */ |
c906108c | 5531 | |
c5aa993b | 5532 | matched = 1; /* do this section */ |
c906108c | 5533 | lma = s->lma; |
23860348 | 5534 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5535 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5536 | (long) lma, (long) size); |
6d820c5c | 5537 | putpkt (rs->buf); |
c906108c | 5538 | |
23860348 MS |
5539 | /* Be clever; compute the host_crc before waiting for target |
5540 | reply. */ | |
c906108c | 5541 | sectdata = xmalloc (size); |
b8c9b27d | 5542 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5543 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5544 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5545 | ||
6d820c5c DJ |
5546 | getpkt (&rs->buf, &rs->buf_size, 0); |
5547 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5548 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5549 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5550 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5551 | error (_("remote target does not support this operation")); |
c906108c | 5552 | |
6d820c5c | 5553 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5554 | target_crc = target_crc * 16 + fromhex (*tmp); |
5555 | ||
d4f3574e SS |
5556 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5557 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5558 | if (host_crc == target_crc) |
5559 | printf_filtered ("matched.\n"); | |
5560 | else | |
c5aa993b JM |
5561 | { |
5562 | printf_filtered ("MIS-MATCHED!\n"); | |
5563 | mismatched++; | |
5564 | } | |
c906108c SS |
5565 | |
5566 | do_cleanups (old_chain); | |
5567 | } | |
5568 | if (mismatched > 0) | |
8a3fe4f8 AC |
5569 | warning (_("One or more sections of the remote executable does not match\n\ |
5570 | the loaded file\n")); | |
c906108c | 5571 | if (args && !matched) |
a3f17187 | 5572 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5573 | } |
5574 | ||
0876f84a DJ |
5575 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5576 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5577 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5578 | The number of bytes read may be less than LEN without indicating an | |
5579 | EOF. PACKET is checked and updated to indicate whether the remote | |
5580 | target supports this object. */ | |
5581 | ||
5582 | static LONGEST | |
5583 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5584 | const char *annex, | |
5585 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5586 | struct packet_config *packet) | |
5587 | { | |
5588 | static char *finished_object; | |
5589 | static char *finished_annex; | |
5590 | static ULONGEST finished_offset; | |
5591 | ||
5592 | struct remote_state *rs = get_remote_state (); | |
5593 | unsigned int total = 0; | |
5594 | LONGEST i, n, packet_len; | |
5595 | ||
5596 | if (packet->support == PACKET_DISABLE) | |
5597 | return -1; | |
5598 | ||
5599 | /* Check whether we've cached an end-of-object packet that matches | |
5600 | this request. */ | |
5601 | if (finished_object) | |
5602 | { | |
5603 | if (strcmp (object_name, finished_object) == 0 | |
5604 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
5605 | && offset == finished_offset) | |
5606 | return 0; | |
5607 | ||
5608 | /* Otherwise, we're now reading something different. Discard | |
5609 | the cache. */ | |
5610 | xfree (finished_object); | |
5611 | xfree (finished_annex); | |
5612 | finished_object = NULL; | |
5613 | finished_annex = NULL; | |
5614 | } | |
5615 | ||
5616 | /* Request only enough to fit in a single packet. The actual data | |
5617 | may not, since we don't know how much of it will need to be escaped; | |
5618 | the target is free to respond with slightly less data. We subtract | |
5619 | five to account for the response type and the protocol frame. */ | |
5620 | n = min (get_remote_packet_size () - 5, len); | |
5621 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
5622 | object_name, annex ? annex : "", | |
5623 | phex_nz (offset, sizeof offset), | |
5624 | phex_nz (n, sizeof n)); | |
5625 | i = putpkt (rs->buf); | |
5626 | if (i < 0) | |
5627 | return -1; | |
5628 | ||
5629 | rs->buf[0] = '\0'; | |
5630 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
5631 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
5632 | return -1; | |
5633 | ||
5634 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
5635 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
5636 | ||
5637 | /* 'm' means there is (or at least might be) more data after this | |
5638 | batch. That does not make sense unless there's at least one byte | |
5639 | of data in this reply. */ | |
5640 | if (rs->buf[0] == 'm' && packet_len == 1) | |
5641 | error (_("Remote qXfer reply contained no data.")); | |
5642 | ||
5643 | /* Got some data. */ | |
5644 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
5645 | ||
5646 | /* 'l' is an EOF marker, possibly including a final block of data, | |
5647 | or possibly empty. Record it to bypass the next read, if one is | |
5648 | issued. */ | |
5649 | if (rs->buf[0] == 'l') | |
5650 | { | |
5651 | finished_object = xstrdup (object_name); | |
5652 | finished_annex = xstrdup (annex ? annex : ""); | |
5653 | finished_offset = offset + i; | |
5654 | } | |
5655 | ||
5656 | return i; | |
5657 | } | |
5658 | ||
1e3ff5ad | 5659 | static LONGEST |
4b8a223f | 5660 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
5661 | const char *annex, gdb_byte *readbuf, |
5662 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 5663 | { |
d01949b6 | 5664 | struct remote_state *rs = get_remote_state (); |
c906108c | 5665 | int i; |
6d820c5c | 5666 | char *p2; |
1e3ff5ad | 5667 | char query_type; |
c906108c | 5668 | |
b2182ed2 | 5669 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
5670 | if (object == TARGET_OBJECT_MEMORY) |
5671 | { | |
5672 | int xfered; | |
5673 | errno = 0; | |
5674 | ||
5675 | if (writebuf != NULL) | |
b2182ed2 | 5676 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 5677 | else |
b2182ed2 | 5678 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
5679 | |
5680 | if (xfered > 0) | |
5681 | return xfered; | |
5682 | else if (xfered == 0 && errno == 0) | |
5683 | return 0; | |
5684 | else | |
5685 | return -1; | |
5686 | } | |
5687 | ||
a76d924d DJ |
5688 | /* Only handle flash writes. */ |
5689 | if (writebuf != NULL) | |
5690 | { | |
5691 | LONGEST xfered; | |
5692 | ||
5693 | switch (object) | |
5694 | { | |
5695 | case TARGET_OBJECT_FLASH: | |
5696 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
5697 | ||
5698 | if (xfered > 0) | |
5699 | return xfered; | |
5700 | else if (xfered == 0 && errno == 0) | |
5701 | return 0; | |
5702 | else | |
5703 | return -1; | |
5704 | ||
5705 | default: | |
5706 | return -1; | |
5707 | } | |
5708 | } | |
4b8a223f | 5709 | |
1e3ff5ad AC |
5710 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5711 | objects!!! Instead specify new query packets. */ | |
5712 | switch (object) | |
c906108c | 5713 | { |
1e3ff5ad AC |
5714 | case TARGET_OBJECT_AVR: |
5715 | query_type = 'R'; | |
5716 | break; | |
802188a7 RM |
5717 | |
5718 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
5719 | gdb_assert (annex == NULL); |
5720 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
5721 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 5722 | |
23181151 DJ |
5723 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
5724 | return remote_read_qxfer | |
5725 | (ops, "features", annex, readbuf, offset, len, | |
5726 | &remote_protocol_packets[PACKET_qXfer_features]); | |
5727 | ||
fd79ecee DJ |
5728 | case TARGET_OBJECT_MEMORY_MAP: |
5729 | gdb_assert (annex == NULL); | |
5730 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
5731 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
5732 | ||
1e3ff5ad | 5733 | default: |
c906108c SS |
5734 | return -1; |
5735 | } | |
5736 | ||
4b8a223f | 5737 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5738 | buffer size. */ |
4b8a223f | 5739 | if (offset == 0 && len == 0) |
ea9c271d DJ |
5740 | return (get_remote_packet_size ()); |
5741 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 5742 | large enough let the caller deal with it. */ |
ea9c271d | 5743 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 5744 | return -1; |
ea9c271d | 5745 | len = get_remote_packet_size (); |
1e3ff5ad | 5746 | |
23860348 | 5747 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5748 | if (!remote_desc) |
8a3fe4f8 | 5749 | error (_("remote query is only available after target open")); |
c906108c | 5750 | |
1e3ff5ad | 5751 | gdb_assert (annex != NULL); |
4b8a223f | 5752 | gdb_assert (readbuf != NULL); |
c906108c | 5753 | |
6d820c5c | 5754 | p2 = rs->buf; |
c906108c SS |
5755 | *p2++ = 'q'; |
5756 | *p2++ = query_type; | |
5757 | ||
23860348 MS |
5758 | /* We used one buffer char for the remote protocol q command and |
5759 | another for the query type. As the remote protocol encapsulation | |
5760 | uses 4 chars plus one extra in case we are debugging | |
5761 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5762 | string. */ | |
c906108c | 5763 | i = 0; |
ea9c271d | 5764 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 5765 | { |
1e3ff5ad AC |
5766 | /* Bad caller may have sent forbidden characters. */ |
5767 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5768 | *p2++ = annex[i]; | |
c906108c SS |
5769 | i++; |
5770 | } | |
1e3ff5ad AC |
5771 | *p2 = '\0'; |
5772 | gdb_assert (annex[i] == '\0'); | |
c906108c | 5773 | |
6d820c5c | 5774 | i = putpkt (rs->buf); |
c5aa993b JM |
5775 | if (i < 0) |
5776 | return i; | |
c906108c | 5777 | |
6d820c5c DJ |
5778 | getpkt (&rs->buf, &rs->buf_size, 0); |
5779 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 5780 | |
cfd77fa1 | 5781 | return strlen ((char *) readbuf); |
c906108c SS |
5782 | } |
5783 | ||
96baa820 JM |
5784 | static void |
5785 | remote_rcmd (char *command, | |
d9fcf2fb | 5786 | struct ui_file *outbuf) |
96baa820 | 5787 | { |
d01949b6 | 5788 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5789 | char *p = rs->buf; |
96baa820 JM |
5790 | |
5791 | if (!remote_desc) | |
8a3fe4f8 | 5792 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5793 | |
23860348 | 5794 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5795 | if (command == NULL) |
5796 | command = ""; | |
5797 | ||
23860348 | 5798 | /* The query prefix. */ |
2e9f7625 DJ |
5799 | strcpy (rs->buf, "qRcmd,"); |
5800 | p = strchr (rs->buf, '\0'); | |
96baa820 | 5801 | |
2e9f7625 | 5802 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 5803 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5804 | |
23860348 | 5805 | /* Encode the actual command. */ |
cfd77fa1 | 5806 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 5807 | |
6d820c5c | 5808 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 5809 | error (_("Communication problem with target.")); |
96baa820 JM |
5810 | |
5811 | /* get/display the response */ | |
5812 | while (1) | |
5813 | { | |
2e9f7625 DJ |
5814 | char *buf; |
5815 | ||
23860348 | 5816 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 5817 | rs->buf[0] = '\0'; |
6d820c5c | 5818 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5819 | buf = rs->buf; |
96baa820 | 5820 | if (buf[0] == '\0') |
8a3fe4f8 | 5821 | error (_("Target does not support this command.")); |
96baa820 JM |
5822 | if (buf[0] == 'O' && buf[1] != 'K') |
5823 | { | |
23860348 | 5824 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5825 | continue; |
5826 | } | |
5827 | if (strcmp (buf, "OK") == 0) | |
5828 | break; | |
7be570e7 JM |
5829 | if (strlen (buf) == 3 && buf[0] == 'E' |
5830 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5831 | { | |
8a3fe4f8 | 5832 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5833 | } |
96baa820 JM |
5834 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5835 | { | |
5836 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5837 | fputc_unfiltered (c, outbuf); | |
5838 | } | |
5839 | break; | |
5840 | } | |
5841 | } | |
5842 | ||
fd79ecee DJ |
5843 | static VEC(mem_region_s) * |
5844 | remote_memory_map (struct target_ops *ops) | |
5845 | { | |
5846 | VEC(mem_region_s) *result = NULL; | |
5847 | char *text = target_read_stralloc (¤t_target, | |
5848 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
5849 | ||
5850 | if (text) | |
5851 | { | |
5852 | struct cleanup *back_to = make_cleanup (xfree, text); | |
5853 | result = parse_memory_map (text); | |
5854 | do_cleanups (back_to); | |
5855 | } | |
5856 | ||
5857 | return result; | |
5858 | } | |
5859 | ||
c906108c | 5860 | static void |
fba45db2 | 5861 | packet_command (char *args, int from_tty) |
c906108c | 5862 | { |
d01949b6 | 5863 | struct remote_state *rs = get_remote_state (); |
c906108c | 5864 | |
c5aa993b | 5865 | if (!remote_desc) |
8a3fe4f8 | 5866 | error (_("command can only be used with remote target")); |
c906108c | 5867 | |
c5aa993b | 5868 | if (!args) |
8a3fe4f8 | 5869 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5870 | |
5871 | puts_filtered ("sending: "); | |
5872 | print_packet (args); | |
5873 | puts_filtered ("\n"); | |
5874 | putpkt (args); | |
5875 | ||
6d820c5c | 5876 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5877 | puts_filtered ("received: "); |
6d820c5c | 5878 | print_packet (rs->buf); |
c906108c SS |
5879 | puts_filtered ("\n"); |
5880 | } | |
5881 | ||
5882 | #if 0 | |
23860348 | 5883 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5884 | |
a14ed312 | 5885 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5886 | |
a14ed312 | 5887 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5888 | |
a14ed312 | 5889 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5890 | |
a14ed312 | 5891 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5892 | |
23860348 | 5893 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5894 | |
a14ed312 | 5895 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5896 | |
23860348 | 5897 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5898 | |
a14ed312 | 5899 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5900 | |
a14ed312 | 5901 | static void init_remote_threadtests (void); |
c906108c | 5902 | |
23860348 | 5903 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5904 | |
5905 | static void | |
fba45db2 | 5906 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5907 | { |
5908 | int sample_thread = SAMPLE_THREAD; | |
5909 | ||
a3f17187 | 5910 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5911 | set_thread (sample_thread, 1); |
5912 | } | |
5913 | ||
5914 | ||
5915 | static void | |
fba45db2 | 5916 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5917 | { |
5918 | int sample_thread = SAMPLE_THREAD; | |
5919 | ||
39f77062 | 5920 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5921 | printf_filtered ("PASS: Thread alive test\n"); |
5922 | else | |
5923 | printf_filtered ("FAIL: Thread alive test\n"); | |
5924 | } | |
5925 | ||
23860348 | 5926 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5927 | |
5928 | void | |
fba45db2 | 5929 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5930 | { |
5931 | char hexid[20]; | |
5932 | ||
23860348 | 5933 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5934 | hexid[16] = 0; |
5935 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5936 | } | |
5937 | ||
5938 | static void | |
fba45db2 | 5939 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5940 | { |
5941 | int startflag = 1; | |
5942 | threadref nextthread; | |
5943 | int done, result_count; | |
5944 | threadref threadlist[3]; | |
5945 | ||
5946 | printf_filtered ("Remote Threadlist test\n"); | |
5947 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5948 | &result_count, &threadlist[0])) | |
5949 | printf_filtered ("FAIL: threadlist test\n"); | |
5950 | else | |
5951 | { | |
5952 | threadref *scan = threadlist; | |
5953 | threadref *limit = scan + result_count; | |
5954 | ||
5955 | while (scan < limit) | |
5956 | output_threadid (" thread ", scan++); | |
5957 | } | |
5958 | } | |
5959 | ||
5960 | void | |
fba45db2 | 5961 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5962 | { |
5963 | output_threadid ("Threadid: ", &info->threadid); | |
5964 | printf_filtered ("Name: %s\n ", info->shortname); | |
5965 | printf_filtered ("State: %s\n", info->display); | |
5966 | printf_filtered ("other: %s\n\n", info->more_display); | |
5967 | } | |
5968 | ||
5969 | int | |
fba45db2 | 5970 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5971 | { |
5972 | int result; | |
5973 | int set; | |
5974 | struct gdb_ext_thread_info threadinfo; | |
5975 | ||
5976 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5977 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5978 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5979 | display_thread_info (&threadinfo); | |
5980 | return result; | |
5981 | } | |
5982 | ||
5983 | static void | |
fba45db2 | 5984 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5985 | { |
5986 | int athread = SAMPLE_THREAD; | |
5987 | threadref thread; | |
5988 | int set; | |
5989 | ||
5990 | int_to_threadref (&thread, athread); | |
5991 | printf_filtered ("Remote Threadinfo test\n"); | |
5992 | if (!get_and_display_threadinfo (&thread)) | |
5993 | printf_filtered ("FAIL cannot get thread info\n"); | |
5994 | } | |
5995 | ||
5996 | static int | |
fba45db2 | 5997 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5998 | { |
5999 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
6000 | return get_and_display_threadinfo (ref); | |
6001 | } | |
6002 | ||
6003 | static void | |
fba45db2 | 6004 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
6005 | { |
6006 | printf_filtered ("Remote Threadlist update test\n"); | |
6007 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
6008 | } | |
6009 | ||
6010 | static void | |
6011 | init_remote_threadtests (void) | |
6012 | { | |
1bedd215 AC |
6013 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6014 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6015 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6016 | _("Fetch and display info about one thread")); |
c906108c | 6017 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6018 | _("Test setting to a different thread")); |
c906108c | 6019 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6020 | _("Iterate through updating all remote thread info")); |
c906108c | 6021 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6022 | _(" Remote thread alive test ")); |
c906108c SS |
6023 | } |
6024 | ||
6025 | #endif /* 0 */ | |
6026 | ||
f3fb8c85 MS |
6027 | /* Convert a thread ID to a string. Returns the string in a static |
6028 | buffer. */ | |
6029 | ||
6030 | static char * | |
39f77062 | 6031 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6032 | { |
fd0a2a6f | 6033 | static char buf[32]; |
f3fb8c85 | 6034 | |
32a5b2f1 | 6035 | xsnprintf (buf, sizeof buf, "Thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
6036 | return buf; |
6037 | } | |
6038 | ||
38691318 KB |
6039 | /* Get the address of the thread local variable in OBJFILE which is |
6040 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6041 | ||
6042 | static CORE_ADDR | |
6043 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6044 | { | |
444abaca | 6045 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6046 | { |
6047 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6048 | char *p = rs->buf; |
571dd617 | 6049 | enum packet_result result; |
38691318 KB |
6050 | |
6051 | strcpy (p, "qGetTLSAddr:"); | |
6052 | p += strlen (p); | |
6053 | p += hexnumstr (p, PIDGET (ptid)); | |
6054 | *p++ = ','; | |
6055 | p += hexnumstr (p, offset); | |
6056 | *p++ = ','; | |
6057 | p += hexnumstr (p, lm); | |
6058 | *p++ = '\0'; | |
6059 | ||
6d820c5c DJ |
6060 | putpkt (rs->buf); |
6061 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6062 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6063 | if (result == PACKET_OK) |
38691318 KB |
6064 | { |
6065 | ULONGEST result; | |
6066 | ||
6d820c5c | 6067 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6068 | return result; |
6069 | } | |
571dd617 | 6070 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6071 | throw_error (TLS_GENERIC_ERROR, |
6072 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6073 | else |
109c3e39 AC |
6074 | throw_error (TLS_GENERIC_ERROR, |
6075 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6076 | } |
6077 | else | |
109c3e39 AC |
6078 | throw_error (TLS_GENERIC_ERROR, |
6079 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6080 | /* Not reached. */ |
6081 | return 0; | |
6082 | } | |
6083 | ||
29709017 DJ |
6084 | /* Support for inferring a target description based on the current |
6085 | architecture and the size of a 'g' packet. While the 'g' packet | |
6086 | can have any size (since optional registers can be left off the | |
6087 | end), some sizes are easily recognizable given knowledge of the | |
6088 | approximate architecture. */ | |
6089 | ||
6090 | struct remote_g_packet_guess | |
6091 | { | |
6092 | int bytes; | |
6093 | const struct target_desc *tdesc; | |
6094 | }; | |
6095 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6096 | DEF_VEC_O(remote_g_packet_guess_s); | |
6097 | ||
6098 | struct remote_g_packet_data | |
6099 | { | |
6100 | VEC(remote_g_packet_guess_s) *guesses; | |
6101 | }; | |
6102 | ||
6103 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6104 | ||
6105 | static void * | |
6106 | remote_g_packet_data_init (struct obstack *obstack) | |
6107 | { | |
6108 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6109 | } | |
6110 | ||
6111 | void | |
6112 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6113 | const struct target_desc *tdesc) | |
6114 | { | |
6115 | struct remote_g_packet_data *data | |
6116 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6117 | struct remote_g_packet_guess new_guess, *guess; | |
6118 | int ix; | |
6119 | ||
6120 | gdb_assert (tdesc != NULL); | |
6121 | ||
6122 | for (ix = 0; | |
6123 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6124 | ix++) | |
6125 | if (guess->bytes == bytes) | |
6126 | internal_error (__FILE__, __LINE__, | |
6127 | "Duplicate g packet description added for size %d", | |
6128 | bytes); | |
6129 | ||
6130 | new_guess.bytes = bytes; | |
6131 | new_guess.tdesc = tdesc; | |
6132 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6133 | } | |
6134 | ||
6135 | static const struct target_desc * | |
6136 | remote_read_description (struct target_ops *target) | |
6137 | { | |
6138 | struct remote_g_packet_data *data | |
6139 | = gdbarch_data (current_gdbarch, remote_g_packet_data_handle); | |
6140 | ||
6141 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6142 | { | |
6143 | struct remote_g_packet_guess *guess; | |
6144 | int ix; | |
6145 | int bytes = send_g_packet (); | |
6146 | ||
6147 | for (ix = 0; | |
6148 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6149 | ix++) | |
6150 | if (guess->bytes == bytes) | |
6151 | return guess->tdesc; | |
6152 | ||
6153 | /* We discard the g packet. A minor optimization would be to | |
6154 | hold on to it, and fill the register cache once we have selected | |
6155 | an architecture, but it's too tricky to do safely. */ | |
6156 | } | |
6157 | ||
6158 | return NULL; | |
6159 | } | |
6160 | ||
c906108c | 6161 | static void |
fba45db2 | 6162 | init_remote_ops (void) |
c906108c | 6163 | { |
c5aa993b | 6164 | remote_ops.to_shortname = "remote"; |
c906108c | 6165 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 6166 | remote_ops.to_doc = |
c906108c | 6167 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
6168 | Specify the serial device it is connected to\n\ |
6169 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
6170 | remote_ops.to_open = remote_open; |
6171 | remote_ops.to_close = remote_close; | |
c906108c | 6172 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 6173 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 6174 | remote_ops.to_resume = remote_resume; |
c906108c SS |
6175 | remote_ops.to_wait = remote_wait; |
6176 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
6177 | remote_ops.to_store_registers = remote_store_registers; | |
6178 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6179 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6180 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
6181 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6182 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6183 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
6184 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
6185 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
6186 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6187 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6188 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6189 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
6190 | remote_ops.to_kill = remote_kill; |
6191 | remote_ops.to_load = generic_load; | |
c906108c SS |
6192 | remote_ops.to_mourn_inferior = remote_mourn; |
6193 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 6194 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 6195 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 6196 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 6197 | remote_ops.to_stop = remote_stop; |
4b8a223f | 6198 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6199 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 6200 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 6201 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
6202 | remote_ops.to_has_all_memory = 1; |
6203 | remote_ops.to_has_memory = 1; | |
6204 | remote_ops.to_has_stack = 1; | |
6205 | remote_ops.to_has_registers = 1; | |
6206 | remote_ops.to_has_execution = 1; | |
6207 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6208 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 6209 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6210 | remote_ops.to_flash_erase = remote_flash_erase; |
6211 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 6212 | remote_ops.to_read_description = remote_read_description; |
c906108c SS |
6213 | } |
6214 | ||
6215 | /* Set up the extended remote vector by making a copy of the standard | |
6216 | remote vector and adding to it. */ | |
6217 | ||
6218 | static void | |
fba45db2 | 6219 | init_extended_remote_ops (void) |
c906108c SS |
6220 | { |
6221 | extended_remote_ops = remote_ops; | |
6222 | ||
0f71a2f6 | 6223 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 6224 | extended_remote_ops.to_longname = |
c906108c | 6225 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 6226 | extended_remote_ops.to_doc = |
c906108c SS |
6227 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6228 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6229 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
6230 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
6231 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
6232 | } |
6233 | ||
6426a772 JM |
6234 | static int |
6235 | remote_can_async_p (void) | |
6236 | { | |
23860348 | 6237 | /* We're async whenever the serial device is. */ |
2cd58942 | 6238 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
6239 | } |
6240 | ||
6241 | static int | |
6242 | remote_is_async_p (void) | |
6243 | { | |
23860348 | 6244 | /* We're async whenever the serial device is. */ |
2cd58942 | 6245 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
6246 | } |
6247 | ||
2acceee2 JM |
6248 | /* Pass the SERIAL event on and up to the client. One day this code |
6249 | will be able to delay notifying the client of an event until the | |
23860348 | 6250 | point where an entire packet has been received. */ |
2acceee2 | 6251 | |
2bc416ba | 6252 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 6253 | void *context); |
2acceee2 JM |
6254 | static void *async_client_context; |
6255 | static serial_event_ftype remote_async_serial_handler; | |
6256 | ||
6426a772 | 6257 | static void |
819cc324 | 6258 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 6259 | { |
2acceee2 JM |
6260 | /* Don't propogate error information up to the client. Instead let |
6261 | the client find out about the error by querying the target. */ | |
6262 | async_client_callback (INF_REG_EVENT, async_client_context); | |
6263 | } | |
6264 | ||
6265 | static void | |
2bc416ba | 6266 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 6267 | void *context), void *context) |
2acceee2 | 6268 | { |
ed9a39eb | 6269 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 6270 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6271 | _("Calling remote_async when async is masked")); |
ed9a39eb | 6272 | |
2acceee2 JM |
6273 | if (callback != NULL) |
6274 | { | |
2cd58942 | 6275 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
6276 | async_client_callback = callback; |
6277 | async_client_context = context; | |
6278 | } | |
6279 | else | |
2cd58942 | 6280 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
6281 | } |
6282 | ||
43ff13b4 JM |
6283 | /* Target async and target extended-async. |
6284 | ||
6285 | This are temporary targets, until it is all tested. Eventually | |
6286 | async support will be incorporated int the usual 'remote' | |
23860348 | 6287 | target. */ |
43ff13b4 JM |
6288 | |
6289 | static void | |
c2d11a7d | 6290 | init_remote_async_ops (void) |
43ff13b4 JM |
6291 | { |
6292 | remote_async_ops.to_shortname = "async"; | |
2bc416ba | 6293 | remote_async_ops.to_longname = |
23860348 | 6294 | "Remote serial target in async version of the gdb-specific protocol"; |
c5aa993b | 6295 | remote_async_ops.to_doc = |
43ff13b4 JM |
6296 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6297 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
6298 | remote_async_ops.to_open = remote_async_open; |
6299 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
6300 | remote_async_ops.to_detach = remote_detach; |
6301 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
6302 | remote_async_ops.to_resume = remote_async_resume; |
6303 | remote_async_ops.to_wait = remote_async_wait; | |
6304 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
6305 | remote_async_ops.to_store_registers = remote_store_registers; | |
6306 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6307 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6308 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
6309 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6310 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6311 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
6312 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6313 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6314 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6315 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
6316 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
6317 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
6318 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
6319 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
6320 | remote_async_ops.to_kill = remote_async_kill; |
6321 | remote_async_ops.to_load = generic_load; | |
53a5351d | 6322 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
6323 | remote_async_ops.to_thread_alive = remote_thread_alive; |
6324 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
6325 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
6326 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 6327 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 6328 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6329 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
6330 | remote_async_ops.to_stratum = process_stratum; |
6331 | remote_async_ops.to_has_all_memory = 1; | |
6332 | remote_async_ops.to_has_memory = 1; | |
6333 | remote_async_ops.to_has_stack = 1; | |
6334 | remote_async_ops.to_has_registers = 1; | |
6335 | remote_async_ops.to_has_execution = 1; | |
6336 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
6337 | remote_async_ops.to_can_async_p = remote_can_async_p; |
6338 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
6339 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 6340 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 6341 | remote_async_ops.to_magic = OPS_MAGIC; |
fd79ecee | 6342 | remote_async_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6343 | remote_async_ops.to_flash_erase = remote_flash_erase; |
6344 | remote_async_ops.to_flash_done = remote_flash_done; | |
29709017 | 6345 | remote_ops.to_read_description = remote_read_description; |
43ff13b4 JM |
6346 | } |
6347 | ||
6348 | /* Set up the async extended remote vector by making a copy of the standard | |
6349 | remote vector and adding to it. */ | |
6350 | ||
6351 | static void | |
c2d11a7d | 6352 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
6353 | { |
6354 | extended_async_remote_ops = remote_async_ops; | |
6355 | ||
6356 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 6357 | extended_async_remote_ops.to_longname = |
43ff13b4 | 6358 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 6359 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
6360 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
6361 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6362 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
6363 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6364 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6365 | } | |
6366 | ||
5a2468f5 | 6367 | static void |
c2d11a7d | 6368 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6369 | { |
427c3a89 | 6370 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
6371 | } |
6372 | ||
d471ea57 AC |
6373 | static void |
6374 | show_remote_cmd (char *args, int from_tty) | |
6375 | { | |
37a105a1 | 6376 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 6377 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
6378 | struct cleanup *showlist_chain; |
6379 | struct cmd_list_element *list = remote_show_cmdlist; | |
6380 | ||
6381 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
6382 | for (; list != NULL; list = list->next) | |
6383 | if (strcmp (list->name, "Z-packet") == 0) | |
6384 | continue; | |
427c3a89 DJ |
6385 | else if (list->type == not_set_cmd) |
6386 | /* Alias commands are exactly like the original, except they | |
6387 | don't have the normal type. */ | |
6388 | continue; | |
6389 | else | |
37a105a1 DJ |
6390 | { |
6391 | struct cleanup *option_chain | |
6392 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
6393 | ui_out_field_string (uiout, "name", list->name); | |
6394 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
6395 | if (list->type == show_cmd) |
6396 | do_setshow_command ((char *) NULL, from_tty, list); | |
6397 | else | |
6398 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
6399 | /* Close the tuple. */ |
6400 | do_cleanups (option_chain); | |
6401 | } | |
427c3a89 DJ |
6402 | |
6403 | /* Close the tuple. */ | |
6404 | do_cleanups (showlist_chain); | |
d471ea57 | 6405 | } |
5a2468f5 | 6406 | |
0f71a2f6 | 6407 | static void |
fba45db2 | 6408 | build_remote_gdbarch_data (void) |
0f71a2f6 | 6409 | { |
d696208f | 6410 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
6411 | } |
6412 | ||
23860348 | 6413 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
6414 | static void (*remote_new_objfile_chain) (struct objfile *); |
6415 | ||
23860348 | 6416 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
6417 | static void |
6418 | remote_new_objfile (struct objfile *objfile) | |
6419 | { | |
23860348 | 6420 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
6421 | { |
6422 | remote_check_symbols (objfile); | |
6423 | } | |
23860348 | 6424 | /* Call predecessor on chain, if any. */ |
f86172a5 | 6425 | if (remote_new_objfile_chain) |
dc8acb97 MS |
6426 | remote_new_objfile_chain (objfile); |
6427 | } | |
6428 | ||
c906108c | 6429 | void |
fba45db2 | 6430 | _initialize_remote (void) |
c906108c | 6431 | { |
ea9c271d DJ |
6432 | struct remote_state *rs; |
6433 | ||
0f71a2f6 | 6434 | /* architecture specific data */ |
2bc416ba | 6435 | remote_gdbarch_data_handle = |
23860348 | 6436 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
6437 | remote_g_packet_data_handle = |
6438 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 AC |
6439 | |
6440 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
6441 | that the remote protocol has been initialized. */ | |
046a4708 AC |
6442 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
6443 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 6444 | |
ea9c271d DJ |
6445 | /* Initialize the per-target state. At the moment there is only one |
6446 | of these, not one per target. Only one target is active at a | |
6447 | time. The default buffer size is unimportant; it will be expanded | |
6448 | whenever a larger buffer is needed. */ | |
0b83947e | 6449 | rs = get_remote_state_raw (); |
ea9c271d DJ |
6450 | rs->buf_size = 400; |
6451 | rs->buf = xmalloc (rs->buf_size); | |
6452 | ||
c906108c SS |
6453 | init_remote_ops (); |
6454 | add_target (&remote_ops); | |
6455 | ||
6456 | init_extended_remote_ops (); | |
6457 | add_target (&extended_remote_ops); | |
cce74817 | 6458 | |
43ff13b4 JM |
6459 | init_remote_async_ops (); |
6460 | add_target (&remote_async_ops); | |
6461 | ||
6462 | init_extended_async_remote_ops (); | |
6463 | add_target (&extended_async_remote_ops); | |
6464 | ||
dc8acb97 | 6465 | /* Hook into new objfile notification. */ |
9a4105ab AC |
6466 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
6467 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 6468 | |
c906108c SS |
6469 | #if 0 |
6470 | init_remote_threadtests (); | |
6471 | #endif | |
6472 | ||
23860348 | 6473 | /* set/show remote ... */ |
d471ea57 | 6474 | |
1bedd215 | 6475 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
6476 | Remote protocol specific variables\n\ |
6477 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6478 | the packets being used"), |
cff3e48b | 6479 | &remote_set_cmdlist, "set remote ", |
23860348 | 6480 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 6481 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
6482 | Remote protocol specific variables\n\ |
6483 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6484 | the packets being used"), |
cff3e48b | 6485 | &remote_show_cmdlist, "show remote ", |
23860348 | 6486 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 6487 | |
1a966eab AC |
6488 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
6489 | Compare section data on target to the exec file.\n\ | |
6490 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
6491 | &cmdlist); |
6492 | ||
1a966eab AC |
6493 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
6494 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
6495 | maintenance packet TEXT\n\ |
6496 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6497 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6498 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 6499 | terminating `#' character and checksum."), |
c906108c SS |
6500 | &maintenancelist); |
6501 | ||
7915a72c AC |
6502 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
6503 | Set whether to send break if interrupted."), _("\ | |
6504 | Show whether to send break if interrupted."), _("\ | |
6505 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 6506 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 6507 | &setlist, &showlist); |
c906108c | 6508 | |
23860348 | 6509 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 6510 | |
1a966eab AC |
6511 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
6512 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 6513 | &setlist); |
1a966eab AC |
6514 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
6515 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
6516 | &showlist); |
6517 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
6518 | set_memory_write_packet_size, _("\ |
6519 | Set the maximum number of bytes per memory-write packet.\n\ | |
6520 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6521 | default packet size. The actual limit is further reduced\n\ | |
6522 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6523 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6524 | &remote_set_cmdlist); |
6525 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
6526 | set_memory_read_packet_size, _("\ |
6527 | Set the maximum number of bytes per memory-read packet.\n\ | |
6528 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6529 | default packet size. The actual limit is further reduced\n\ | |
6530 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6531 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6532 | &remote_set_cmdlist); |
6533 | add_cmd ("memory-write-packet-size", no_class, | |
6534 | show_memory_write_packet_size, | |
1a966eab | 6535 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
6536 | &remote_show_cmdlist); |
6537 | add_cmd ("memory-read-packet-size", no_class, | |
6538 | show_memory_read_packet_size, | |
1a966eab | 6539 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 6540 | &remote_show_cmdlist); |
c906108c | 6541 | |
b3f42336 | 6542 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
6543 | &remote_hw_watchpoint_limit, _("\ |
6544 | Set the maximum number of target hardware watchpoints."), _("\ | |
6545 | Show the maximum number of target hardware watchpoints."), _("\ | |
6546 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6547 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
6548 | &remote_set_cmdlist, &remote_show_cmdlist); |
6549 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
6550 | &remote_hw_breakpoint_limit, _("\ |
6551 | Set the maximum number of target hardware breakpoints."), _("\ | |
6552 | Show the maximum number of target hardware breakpoints."), _("\ | |
6553 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6554 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 6555 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 6556 | |
4d28ad1e AC |
6557 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
6558 | &remote_address_size, _("\ | |
6559 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
6560 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
6561 | NULL, | |
6562 | NULL, /* FIXME: i18n: */ | |
6563 | &setlist, &showlist); | |
c906108c | 6564 | |
444abaca | 6565 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 6566 | "X", "binary-download", 1); |
0f71a2f6 | 6567 | |
444abaca | 6568 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 6569 | "vCont", "verbose-resume", 0); |
506fb367 | 6570 | |
89be2091 DJ |
6571 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
6572 | "QPassSignals", "pass-signals", 0); | |
6573 | ||
444abaca | 6574 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 6575 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 6576 | |
444abaca | 6577 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 6578 | "P", "set-register", 1); |
d471ea57 | 6579 | |
444abaca | 6580 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 6581 | "p", "fetch-register", 1); |
b96ec7ac | 6582 | |
444abaca | 6583 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 6584 | "Z0", "software-breakpoint", 0); |
d471ea57 | 6585 | |
444abaca | 6586 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 6587 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 6588 | |
444abaca | 6589 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 6590 | "Z2", "write-watchpoint", 0); |
d471ea57 | 6591 | |
444abaca | 6592 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 6593 | "Z3", "read-watchpoint", 0); |
d471ea57 | 6594 | |
444abaca | 6595 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 6596 | "Z4", "access-watchpoint", 0); |
d471ea57 | 6597 | |
0876f84a DJ |
6598 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
6599 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 6600 | |
23181151 DJ |
6601 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
6602 | "qXfer:features:read", "target-features", 0); | |
6603 | ||
fd79ecee DJ |
6604 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
6605 | "qXfer:memory-map:read", "memory-map", 0); | |
6606 | ||
444abaca | 6607 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 6608 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
6609 | 0); |
6610 | ||
be2a5f71 DJ |
6611 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
6612 | "qSupported", "supported-packets", 0); | |
6613 | ||
37a105a1 DJ |
6614 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
6615 | Z sub-packet has its own set and show commands, but users may | |
6616 | have sets to this variable in their .gdbinit files (or in their | |
6617 | documentation). */ | |
e9e68a56 | 6618 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
6619 | &remote_Z_packet_detect, _("\ |
6620 | Set use of remote protocol `Z' packets"), _("\ | |
6621 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 6622 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 6623 | packets."), |
e9e68a56 | 6624 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 6625 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 6626 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
6627 | |
6628 | /* Eventually initialize fileio. See fileio.c */ | |
6629 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 6630 | } |