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 | |
316f2060 | 92 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 93 | |
56be3814 | 94 | static void remote_fetch_registers (struct regcache *regcache, 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 | |
56be3814 | 111 | static void remote_store_registers (struct regcache *regcache, 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. */ |
c9f4d572 UW |
263 | /* char *name; == gdbarch_register_name (current_gdbarch, regnum); |
264 | at present. */ | |
ad10f812 AC |
265 | }; |
266 | ||
ea9c271d | 267 | struct remote_arch_state |
d01949b6 | 268 | { |
ad10f812 AC |
269 | /* Description of the remote protocol registers. */ |
270 | long sizeof_g_packet; | |
b323314b AC |
271 | |
272 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 273 | (making an array gdbarch_num_regs in size). */ |
b323314b | 274 | struct packet_reg *regs; |
ad10f812 | 275 | |
d01949b6 AC |
276 | /* This is the size (in chars) of the first response to the ``g'' |
277 | packet. It is used as a heuristic when determining the maximum | |
278 | size of memory-read and memory-write packets. A target will | |
279 | typically only reserve a buffer large enough to hold the ``g'' | |
280 | packet. The size does not include packet overhead (headers and | |
23860348 | 281 | trailers). */ |
d01949b6 AC |
282 | long actual_register_packet_size; |
283 | ||
284 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 285 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
286 | long remote_packet_size; |
287 | }; | |
288 | ||
3c3bea1c | 289 | |
d01949b6 AC |
290 | /* Handle for retreving the remote protocol data from gdbarch. */ |
291 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
292 | ||
ea9c271d DJ |
293 | static struct remote_arch_state * |
294 | get_remote_arch_state (void) | |
d01949b6 | 295 | { |
451fbdda | 296 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
297 | } |
298 | ||
0b83947e DJ |
299 | /* Fetch the global remote target state. */ |
300 | ||
301 | static struct remote_state * | |
302 | get_remote_state (void) | |
303 | { | |
304 | /* Make sure that the remote architecture state has been | |
305 | initialized, because doing so might reallocate rs->buf. Any | |
306 | function which calls getpkt also needs to be mindful of changes | |
307 | to rs->buf, but this call limits the number of places which run | |
308 | into trouble. */ | |
309 | get_remote_arch_state (); | |
310 | ||
311 | return get_remote_state_raw (); | |
312 | } | |
313 | ||
74ca34ce DJ |
314 | static int |
315 | compare_pnums (const void *lhs_, const void *rhs_) | |
316 | { | |
317 | const struct packet_reg * const *lhs = lhs_; | |
318 | const struct packet_reg * const *rhs = rhs_; | |
319 | ||
320 | if ((*lhs)->pnum < (*rhs)->pnum) | |
321 | return -1; | |
322 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
323 | return 0; | |
324 | else | |
325 | return 1; | |
326 | } | |
327 | ||
d01949b6 AC |
328 | static void * |
329 | init_remote_state (struct gdbarch *gdbarch) | |
330 | { | |
74ca34ce | 331 | int regnum, num_remote_regs, offset; |
0b83947e | 332 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 333 | struct remote_arch_state *rsa; |
74ca34ce | 334 | struct packet_reg **remote_regs; |
ea9c271d DJ |
335 | |
336 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 337 | |
123dc839 DJ |
338 | /* Use the architecture to build a regnum<->pnum table, which will be |
339 | 1:1 unless a feature set specifies otherwise. */ | |
f57d151a UW |
340 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, |
341 | gdbarch_num_regs (current_gdbarch), | |
342 | struct packet_reg); | |
343 | for (regnum = 0; regnum < gdbarch_num_regs (current_gdbarch); regnum++) | |
ad10f812 | 344 | { |
ea9c271d | 345 | struct packet_reg *r = &rsa->regs[regnum]; |
baef701f DJ |
346 | |
347 | if (register_size (current_gdbarch, regnum) == 0) | |
348 | /* Do not try to fetch zero-sized (placeholder) registers. */ | |
349 | r->pnum = -1; | |
350 | else | |
351 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
352 | ||
b323314b | 353 | r->regnum = regnum; |
74ca34ce DJ |
354 | } |
355 | ||
356 | /* Define the g/G packet format as the contents of each register | |
357 | with a remote protocol number, in order of ascending protocol | |
358 | number. */ | |
359 | ||
f57d151a UW |
360 | remote_regs = alloca (gdbarch_num_regs (current_gdbarch) |
361 | * sizeof (struct packet_reg *)); | |
362 | for (num_remote_regs = 0, regnum = 0; | |
363 | regnum < gdbarch_num_regs (current_gdbarch); | |
364 | regnum++) | |
74ca34ce DJ |
365 | if (rsa->regs[regnum].pnum != -1) |
366 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 367 | |
74ca34ce DJ |
368 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
369 | compare_pnums); | |
370 | ||
371 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
372 | { | |
373 | remote_regs[regnum]->in_g_packet = 1; | |
374 | remote_regs[regnum]->offset = offset; | |
375 | offset += register_size (current_gdbarch, remote_regs[regnum]->regnum); | |
ad10f812 AC |
376 | } |
377 | ||
74ca34ce DJ |
378 | /* Record the maximum possible size of the g packet - it may turn out |
379 | to be smaller. */ | |
380 | rsa->sizeof_g_packet = offset; | |
381 | ||
d01949b6 AC |
382 | /* Default maximum number of characters in a packet body. Many |
383 | remote stubs have a hardwired buffer size of 400 bytes | |
384 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
385 | as the maximum packet-size to ensure that the packet and an extra | |
386 | NUL character can always fit in the buffer. This stops GDB | |
387 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
388 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
389 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 390 | |
ea9c271d DJ |
391 | /* This one is filled in when a ``g'' packet is received. */ |
392 | rsa->actual_register_packet_size = 0; | |
393 | ||
394 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
395 | default, adjust the size accordingly. Remember that each byte is |
396 | encoded as two characters. 32 is the overhead for the packet | |
397 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 398 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 399 | little. */ |
ea9c271d DJ |
400 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
401 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 402 | |
ea9c271d DJ |
403 | /* Make sure that the packet buffer is plenty big enough for |
404 | this architecture. */ | |
405 | if (rs->buf_size < rsa->remote_packet_size) | |
406 | { | |
407 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 408 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 409 | } |
6d820c5c | 410 | |
ea9c271d DJ |
411 | return rsa; |
412 | } | |
413 | ||
414 | /* Return the current allowed size of a remote packet. This is | |
415 | inferred from the current architecture, and should be used to | |
416 | limit the length of outgoing packets. */ | |
417 | static long | |
418 | get_remote_packet_size (void) | |
419 | { | |
be2a5f71 | 420 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
421 | struct remote_arch_state *rsa = get_remote_arch_state (); |
422 | ||
be2a5f71 DJ |
423 | if (rs->explicit_packet_size) |
424 | return rs->explicit_packet_size; | |
425 | ||
ea9c271d | 426 | return rsa->remote_packet_size; |
d01949b6 AC |
427 | } |
428 | ||
ad10f812 | 429 | static struct packet_reg * |
ea9c271d | 430 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 431 | { |
f57d151a | 432 | if (regnum < 0 && regnum >= gdbarch_num_regs (current_gdbarch)) |
b323314b AC |
433 | return NULL; |
434 | else | |
ad10f812 | 435 | { |
ea9c271d | 436 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
437 | gdb_assert (r->regnum == regnum); |
438 | return r; | |
ad10f812 | 439 | } |
ad10f812 AC |
440 | } |
441 | ||
442 | static struct packet_reg * | |
ea9c271d | 443 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 444 | { |
b323314b | 445 | int i; |
f57d151a | 446 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ad10f812 | 447 | { |
ea9c271d | 448 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
449 | if (r->pnum == pnum) |
450 | return r; | |
ad10f812 AC |
451 | } |
452 | return NULL; | |
d01949b6 AC |
453 | } |
454 | ||
3c3bea1c GS |
455 | /* FIXME: graces/2002-08-08: These variables should eventually be |
456 | bound to an instance of the target object (as in gdbarch-tdep()), | |
457 | when such a thing exists. */ | |
458 | ||
459 | /* This is set to the data address of the access causing the target | |
460 | to stop for a watchpoint. */ | |
461 | static CORE_ADDR remote_watch_data_address; | |
462 | ||
94e08568 | 463 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
464 | static int remote_stopped_by_watchpoint_p; |
465 | ||
c906108c SS |
466 | static struct target_ops remote_ops; |
467 | ||
468 | static struct target_ops extended_remote_ops; | |
469 | ||
43ff13b4 | 470 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 471 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
472 | static struct target_ops remote_async_ops; |
473 | ||
474 | static struct target_ops extended_async_remote_ops; | |
475 | ||
6426a772 JM |
476 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
477 | ``forever'' still use the normal timeout mechanism. This is | |
478 | currently used by the ASYNC code to guarentee that target reads | |
479 | during the initial connect always time-out. Once getpkt has been | |
480 | modified to return a timeout indication and, in turn | |
481 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 482 | this can go away. */ |
6426a772 JM |
483 | static int wait_forever_enabled_p = 1; |
484 | ||
485 | ||
c906108c SS |
486 | /* This variable chooses whether to send a ^C or a break when the user |
487 | requests program interruption. Although ^C is usually what remote | |
488 | systems expect, and that is the default here, sometimes a break is | |
489 | preferable instead. */ | |
490 | ||
491 | static int remote_break; | |
492 | ||
c906108c SS |
493 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
494 | remote_open knows that we don't have a file open when the program | |
495 | starts. */ | |
819cc324 | 496 | static struct serial *remote_desc = NULL; |
c906108c | 497 | |
c906108c SS |
498 | /* This variable sets the number of bits in an address that are to be |
499 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
500 | leading zeros, the entire address would be sent. This variable | |
501 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
502 | initial implementation of remote.c restricted the address sent in | |
503 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
504 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
505 | address was never sent. Since fixing this bug may cause a break in | |
506 | some remote targets this variable is principly provided to | |
23860348 | 507 | facilitate backward compatibility. */ |
c906108c SS |
508 | |
509 | static int remote_address_size; | |
510 | ||
6426a772 JM |
511 | /* Tempoary to track who currently owns the terminal. See |
512 | target_async_terminal_* for more details. */ | |
513 | ||
514 | static int remote_async_terminal_ours_p; | |
515 | ||
11cf8741 | 516 | \f |
11cf8741 | 517 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
518 | memory read/write packet. MIN (rsa->remote_packet_size, |
519 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 520 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
521 | (speed up transfers). The variables ``preferred_*'' (the user |
522 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 523 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
524 | |
525 | struct memory_packet_config | |
526 | { | |
527 | char *name; | |
528 | long size; | |
529 | int fixed_p; | |
530 | }; | |
531 | ||
532 | /* Compute the current size of a read/write packet. Since this makes | |
533 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
534 | ||
535 | static long | |
536 | get_memory_packet_size (struct memory_packet_config *config) | |
537 | { | |
d01949b6 | 538 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
539 | struct remote_arch_state *rsa = get_remote_arch_state (); |
540 | ||
11cf8741 JM |
541 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
542 | law?) that some hosts don't cope very well with large alloca() | |
543 | calls. Eventually the alloca() code will be replaced by calls to | |
544 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 545 | be lifted or removed. */ |
11cf8741 JM |
546 | #ifndef MAX_REMOTE_PACKET_SIZE |
547 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
548 | #endif | |
3de11b2e | 549 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 550 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 551 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
552 | #endif |
553 | long what_they_get; | |
554 | if (config->fixed_p) | |
555 | { | |
556 | if (config->size <= 0) | |
557 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
558 | else | |
559 | what_they_get = config->size; | |
560 | } | |
561 | else | |
562 | { | |
ea9c271d | 563 | what_they_get = get_remote_packet_size (); |
23860348 | 564 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
565 | if (config->size > 0 |
566 | && what_they_get > config->size) | |
567 | what_they_get = config->size; | |
be2a5f71 DJ |
568 | |
569 | /* Limit it to the size of the targets ``g'' response unless we have | |
570 | permission from the stub to use a larger packet size. */ | |
571 | if (rs->explicit_packet_size == 0 | |
572 | && rsa->actual_register_packet_size > 0 | |
573 | && what_they_get > rsa->actual_register_packet_size) | |
574 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
575 | } |
576 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
577 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
578 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
579 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
580 | |
581 | /* Make sure there is room in the global buffer for this packet | |
582 | (including its trailing NUL byte). */ | |
583 | if (rs->buf_size < what_they_get + 1) | |
584 | { | |
585 | rs->buf_size = 2 * what_they_get; | |
586 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
587 | } | |
588 | ||
11cf8741 JM |
589 | return what_they_get; |
590 | } | |
591 | ||
592 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 593 | something really big then do a sanity check. */ |
11cf8741 JM |
594 | |
595 | static void | |
596 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
597 | { | |
598 | int fixed_p = config->fixed_p; | |
599 | long size = config->size; | |
600 | if (args == NULL) | |
8a3fe4f8 | 601 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
602 | else if (strcmp (args, "hard") == 0 |
603 | || strcmp (args, "fixed") == 0) | |
604 | fixed_p = 1; | |
605 | else if (strcmp (args, "soft") == 0 | |
606 | || strcmp (args, "limit") == 0) | |
607 | fixed_p = 0; | |
608 | else | |
609 | { | |
610 | char *end; | |
611 | size = strtoul (args, &end, 0); | |
612 | if (args == end) | |
8a3fe4f8 | 613 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
614 | #if 0 |
615 | /* Instead of explicitly capping the size of a packet to | |
616 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
617 | instead allowed to set the size to something arbitrarily | |
23860348 | 618 | large. */ |
11cf8741 | 619 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 620 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
621 | #endif |
622 | } | |
23860348 | 623 | /* Extra checks? */ |
11cf8741 JM |
624 | if (fixed_p && !config->fixed_p) |
625 | { | |
e2e0b3e5 AC |
626 | if (! query (_("The target may not be able to correctly handle a %s\n" |
627 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 628 | config->name, size)) |
8a3fe4f8 | 629 | error (_("Packet size not changed.")); |
11cf8741 | 630 | } |
23860348 | 631 | /* Update the config. */ |
11cf8741 JM |
632 | config->fixed_p = fixed_p; |
633 | config->size = size; | |
634 | } | |
635 | ||
636 | static void | |
637 | show_memory_packet_size (struct memory_packet_config *config) | |
638 | { | |
a3f17187 | 639 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 640 | if (config->fixed_p) |
a3f17187 | 641 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
642 | get_memory_packet_size (config)); |
643 | else | |
a3f17187 | 644 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
645 | get_memory_packet_size (config)); |
646 | } | |
647 | ||
648 | static struct memory_packet_config memory_write_packet_config = | |
649 | { | |
650 | "memory-write-packet-size", | |
651 | }; | |
652 | ||
653 | static void | |
654 | set_memory_write_packet_size (char *args, int from_tty) | |
655 | { | |
656 | set_memory_packet_size (args, &memory_write_packet_config); | |
657 | } | |
658 | ||
659 | static void | |
660 | show_memory_write_packet_size (char *args, int from_tty) | |
661 | { | |
662 | show_memory_packet_size (&memory_write_packet_config); | |
663 | } | |
664 | ||
665 | static long | |
666 | get_memory_write_packet_size (void) | |
667 | { | |
668 | return get_memory_packet_size (&memory_write_packet_config); | |
669 | } | |
670 | ||
671 | static struct memory_packet_config memory_read_packet_config = | |
672 | { | |
673 | "memory-read-packet-size", | |
674 | }; | |
675 | ||
676 | static void | |
677 | set_memory_read_packet_size (char *args, int from_tty) | |
678 | { | |
679 | set_memory_packet_size (args, &memory_read_packet_config); | |
680 | } | |
681 | ||
682 | static void | |
683 | show_memory_read_packet_size (char *args, int from_tty) | |
684 | { | |
685 | show_memory_packet_size (&memory_read_packet_config); | |
686 | } | |
687 | ||
688 | static long | |
689 | get_memory_read_packet_size (void) | |
690 | { | |
691 | long size = get_memory_packet_size (&memory_read_packet_config); | |
692 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
693 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
694 | increased beyond this. */ |
695 | if (size > get_remote_packet_size ()) | |
696 | size = get_remote_packet_size (); | |
11cf8741 JM |
697 | return size; |
698 | } | |
699 | ||
11cf8741 | 700 | \f |
5a2468f5 JM |
701 | /* Generic configuration support for packets the stub optionally |
702 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 703 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
704 | |
705 | enum packet_support | |
706 | { | |
707 | PACKET_SUPPORT_UNKNOWN = 0, | |
708 | PACKET_ENABLE, | |
709 | PACKET_DISABLE | |
710 | }; | |
711 | ||
5a2468f5 JM |
712 | struct packet_config |
713 | { | |
bb572ddd DJ |
714 | const char *name; |
715 | const char *title; | |
7f19b9a2 | 716 | enum auto_boolean detect; |
5a2468f5 JM |
717 | enum packet_support support; |
718 | }; | |
719 | ||
d471ea57 | 720 | /* Analyze a packet's return value and update the packet config |
23860348 | 721 | accordingly. */ |
d471ea57 AC |
722 | |
723 | enum packet_result | |
724 | { | |
725 | PACKET_ERROR, | |
726 | PACKET_OK, | |
727 | PACKET_UNKNOWN | |
728 | }; | |
729 | ||
5a2468f5 | 730 | static void |
d471ea57 | 731 | update_packet_config (struct packet_config *config) |
5a2468f5 | 732 | { |
d471ea57 AC |
733 | switch (config->detect) |
734 | { | |
7f19b9a2 | 735 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
736 | config->support = PACKET_ENABLE; |
737 | break; | |
7f19b9a2 | 738 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
739 | config->support = PACKET_DISABLE; |
740 | break; | |
7f19b9a2 | 741 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
742 | config->support = PACKET_SUPPORT_UNKNOWN; |
743 | break; | |
744 | } | |
5a2468f5 JM |
745 | } |
746 | ||
747 | static void | |
fba45db2 | 748 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
749 | { |
750 | char *support = "internal-error"; | |
751 | switch (config->support) | |
752 | { | |
753 | case PACKET_ENABLE: | |
754 | support = "enabled"; | |
755 | break; | |
756 | case PACKET_DISABLE: | |
757 | support = "disabled"; | |
758 | break; | |
759 | case PACKET_SUPPORT_UNKNOWN: | |
760 | support = "unknown"; | |
761 | break; | |
762 | } | |
763 | switch (config->detect) | |
764 | { | |
7f19b9a2 | 765 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
766 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
767 | config->name, support); | |
5a2468f5 | 768 | break; |
7f19b9a2 AC |
769 | case AUTO_BOOLEAN_TRUE: |
770 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
771 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
772 | config->name, support); | |
8e248173 | 773 | break; |
5a2468f5 JM |
774 | } |
775 | } | |
776 | ||
777 | static void | |
bb572ddd DJ |
778 | add_packet_config_cmd (struct packet_config *config, const char *name, |
779 | const char *title, int legacy) | |
d471ea57 | 780 | { |
5a2468f5 JM |
781 | char *set_doc; |
782 | char *show_doc; | |
d471ea57 | 783 | char *cmd_name; |
3ed07be4 | 784 | |
5a2468f5 JM |
785 | config->name = name; |
786 | config->title = title; | |
7f19b9a2 | 787 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 788 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
789 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
790 | name, title); | |
791 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
792 | name, title); | |
d471ea57 | 793 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 794 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 795 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 796 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
797 | set_remote_protocol_packet_cmd, |
798 | show_remote_protocol_packet_cmd, | |
799 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 800 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
801 | if (legacy) |
802 | { | |
803 | char *legacy_name; | |
b435e160 | 804 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 805 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 806 | &remote_set_cmdlist); |
d471ea57 | 807 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 808 | &remote_show_cmdlist); |
d471ea57 | 809 | } |
5a2468f5 JM |
810 | } |
811 | ||
d471ea57 | 812 | static enum packet_result |
a76d924d | 813 | packet_check_result (const char *buf) |
5a2468f5 | 814 | { |
d471ea57 | 815 | if (buf[0] != '\0') |
5a2468f5 | 816 | { |
d471ea57 | 817 | /* The stub recognized the packet request. Check that the |
23860348 | 818 | operation succeeded. */ |
a76d924d DJ |
819 | if (buf[0] == 'E' |
820 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
821 | && buf[3] == '\0') | |
822 | /* "Enn" - definitly an error. */ | |
823 | return PACKET_ERROR; | |
824 | ||
825 | /* Always treat "E." as an error. This will be used for | |
826 | more verbose error messages, such as E.memtypes. */ | |
827 | if (buf[0] == 'E' && buf[1] == '.') | |
828 | return PACKET_ERROR; | |
829 | ||
830 | /* The packet may or may not be OK. Just assume it is. */ | |
831 | return PACKET_OK; | |
832 | } | |
833 | else | |
834 | /* The stub does not support the packet. */ | |
835 | return PACKET_UNKNOWN; | |
836 | } | |
837 | ||
838 | static enum packet_result | |
839 | packet_ok (const char *buf, struct packet_config *config) | |
840 | { | |
841 | enum packet_result result; | |
842 | ||
843 | result = packet_check_result (buf); | |
844 | switch (result) | |
845 | { | |
846 | case PACKET_OK: | |
847 | case PACKET_ERROR: | |
848 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
849 | switch (config->support) |
850 | { | |
851 | case PACKET_SUPPORT_UNKNOWN: | |
852 | if (remote_debug) | |
853 | fprintf_unfiltered (gdb_stdlog, | |
854 | "Packet %s (%s) is supported\n", | |
855 | config->name, config->title); | |
856 | config->support = PACKET_ENABLE; | |
857 | break; | |
858 | case PACKET_DISABLE: | |
8e65ff28 | 859 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 860 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
861 | break; |
862 | case PACKET_ENABLE: | |
863 | break; | |
864 | } | |
a76d924d DJ |
865 | break; |
866 | case PACKET_UNKNOWN: | |
23860348 | 867 | /* The stub does not support the packet. */ |
d471ea57 AC |
868 | switch (config->support) |
869 | { | |
870 | case PACKET_ENABLE: | |
7f19b9a2 | 871 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 872 | /* If the stub previously indicated that the packet was |
23860348 | 873 | supported then there is a protocol error.. */ |
8a3fe4f8 | 874 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
875 | config->name, config->title); |
876 | else | |
23860348 | 877 | /* The user set it wrong. */ |
8a3fe4f8 | 878 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
879 | config->name, config->title); |
880 | break; | |
881 | case PACKET_SUPPORT_UNKNOWN: | |
882 | if (remote_debug) | |
883 | fprintf_unfiltered (gdb_stdlog, | |
884 | "Packet %s (%s) is NOT supported\n", | |
885 | config->name, config->title); | |
886 | config->support = PACKET_DISABLE; | |
887 | break; | |
888 | case PACKET_DISABLE: | |
889 | break; | |
890 | } | |
a76d924d | 891 | break; |
5a2468f5 | 892 | } |
a76d924d DJ |
893 | |
894 | return result; | |
5a2468f5 JM |
895 | } |
896 | ||
444abaca DJ |
897 | enum { |
898 | PACKET_vCont = 0, | |
899 | PACKET_X, | |
900 | PACKET_qSymbol, | |
901 | PACKET_P, | |
902 | PACKET_p, | |
903 | PACKET_Z0, | |
904 | PACKET_Z1, | |
905 | PACKET_Z2, | |
906 | PACKET_Z3, | |
907 | PACKET_Z4, | |
0876f84a | 908 | PACKET_qXfer_auxv, |
23181151 | 909 | PACKET_qXfer_features, |
fd79ecee | 910 | PACKET_qXfer_memory_map, |
0e7f50da UW |
911 | PACKET_qXfer_spu_read, |
912 | PACKET_qXfer_spu_write, | |
444abaca | 913 | PACKET_qGetTLSAddr, |
be2a5f71 | 914 | PACKET_qSupported, |
89be2091 | 915 | PACKET_QPassSignals, |
444abaca DJ |
916 | PACKET_MAX |
917 | }; | |
506fb367 | 918 | |
444abaca | 919 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
920 | |
921 | static void | |
444abaca DJ |
922 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
923 | struct cmd_list_element *c) | |
dc8acb97 | 924 | { |
444abaca | 925 | struct packet_config *packet; |
dc8acb97 | 926 | |
444abaca DJ |
927 | for (packet = remote_protocol_packets; |
928 | packet < &remote_protocol_packets[PACKET_MAX]; | |
929 | packet++) | |
930 | { | |
931 | if (&packet->detect == c->var) | |
932 | { | |
933 | update_packet_config (packet); | |
934 | return; | |
935 | } | |
936 | } | |
937 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
938 | c->name); | |
dc8acb97 MS |
939 | } |
940 | ||
5a2468f5 | 941 | static void |
444abaca DJ |
942 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
943 | struct cmd_list_element *c, | |
944 | const char *value) | |
5a2468f5 | 945 | { |
444abaca | 946 | struct packet_config *packet; |
5a2468f5 | 947 | |
444abaca DJ |
948 | for (packet = remote_protocol_packets; |
949 | packet < &remote_protocol_packets[PACKET_MAX]; | |
950 | packet++) | |
951 | { | |
952 | if (&packet->detect == c->var) | |
953 | { | |
954 | show_packet_config_cmd (packet); | |
955 | return; | |
956 | } | |
957 | } | |
958 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
959 | c->name); | |
5a2468f5 JM |
960 | } |
961 | ||
d471ea57 AC |
962 | /* Should we try one of the 'Z' requests? */ |
963 | ||
964 | enum Z_packet_type | |
965 | { | |
966 | Z_PACKET_SOFTWARE_BP, | |
967 | Z_PACKET_HARDWARE_BP, | |
968 | Z_PACKET_WRITE_WP, | |
969 | Z_PACKET_READ_WP, | |
970 | Z_PACKET_ACCESS_WP, | |
971 | NR_Z_PACKET_TYPES | |
972 | }; | |
96baa820 | 973 | |
d471ea57 | 974 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 975 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 976 | |
7f19b9a2 | 977 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
978 | |
979 | static void | |
fba45db2 KB |
980 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
981 | struct cmd_list_element *c) | |
96baa820 | 982 | { |
d471ea57 AC |
983 | int i; |
984 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
985 | { | |
444abaca DJ |
986 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
987 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 988 | } |
96baa820 JM |
989 | } |
990 | ||
991 | static void | |
08546159 AC |
992 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
993 | struct cmd_list_element *c, | |
994 | const char *value) | |
96baa820 | 995 | { |
d471ea57 AC |
996 | int i; |
997 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
998 | { | |
444abaca | 999 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1000 | } |
96baa820 JM |
1001 | } |
1002 | ||
9d1f7ab2 MS |
1003 | /* Should we try the 'ThreadInfo' query packet? |
1004 | ||
1005 | This variable (NOT available to the user: auto-detect only!) | |
1006 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1007 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1008 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1009 | and set to false when the target fails to recognize it). */ |
1010 | ||
1011 | static int use_threadinfo_query; | |
1012 | static int use_threadextra_query; | |
1013 | ||
23860348 | 1014 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1015 | static struct async_signal_handler *sigint_remote_twice_token; |
1016 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1017 | |
c906108c SS |
1018 | /* These are pointers to hook functions that may be set in order to |
1019 | modify resume/wait behavior for a particular architecture. */ | |
1020 | ||
9a4105ab AC |
1021 | void (*deprecated_target_resume_hook) (void); |
1022 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
1023 | \f |
1024 | ||
c5aa993b | 1025 | |
c906108c SS |
1026 | /* These are the threads which we last sent to the remote system. |
1027 | -1 for all or -2 for not sent yet. */ | |
1028 | static int general_thread; | |
cce74817 | 1029 | static int continue_thread; |
c906108c SS |
1030 | |
1031 | /* Call this function as a result of | |
1032 | 1) A halt indication (T packet) containing a thread id | |
1033 | 2) A direct query of currthread | |
1034 | 3) Successful execution of set thread | |
1035 | */ | |
1036 | ||
1037 | static void | |
fba45db2 | 1038 | record_currthread (int currthread) |
c906108c | 1039 | { |
c906108c | 1040 | general_thread = currthread; |
cce74817 | 1041 | |
c906108c SS |
1042 | /* If this is a new thread, add it to GDB's thread list. |
1043 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1044 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1045 | { |
39f77062 | 1046 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1047 | ui_out_text (uiout, "[New "); |
39f77062 | 1048 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1049 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1050 | } |
c906108c SS |
1051 | } |
1052 | ||
89be2091 DJ |
1053 | static char *last_pass_packet; |
1054 | ||
1055 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1056 | it can simply pass through to the inferior without reporting. */ | |
1057 | ||
1058 | static void | |
1059 | remote_pass_signals (void) | |
1060 | { | |
1061 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1062 | { | |
1063 | char *pass_packet, *p; | |
1064 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1065 | int count = 0, i; | |
1066 | ||
1067 | gdb_assert (numsigs < 256); | |
1068 | for (i = 0; i < numsigs; i++) | |
1069 | { | |
1070 | if (signal_stop_state (i) == 0 | |
1071 | && signal_print_state (i) == 0 | |
1072 | && signal_pass_state (i) == 1) | |
1073 | count++; | |
1074 | } | |
1075 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1076 | strcpy (pass_packet, "QPassSignals:"); | |
1077 | p = pass_packet + strlen (pass_packet); | |
1078 | for (i = 0; i < numsigs; i++) | |
1079 | { | |
1080 | if (signal_stop_state (i) == 0 | |
1081 | && signal_print_state (i) == 0 | |
1082 | && signal_pass_state (i) == 1) | |
1083 | { | |
1084 | if (i >= 16) | |
1085 | *p++ = tohex (i >> 4); | |
1086 | *p++ = tohex (i & 15); | |
1087 | if (count) | |
1088 | *p++ = ';'; | |
1089 | else | |
1090 | break; | |
1091 | count--; | |
1092 | } | |
1093 | } | |
1094 | *p = 0; | |
1095 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1096 | { | |
1097 | struct remote_state *rs = get_remote_state (); | |
1098 | char *buf = rs->buf; | |
1099 | ||
1100 | putpkt (pass_packet); | |
1101 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1102 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1103 | if (last_pass_packet) | |
1104 | xfree (last_pass_packet); | |
1105 | last_pass_packet = pass_packet; | |
1106 | } | |
1107 | else | |
1108 | xfree (pass_packet); | |
1109 | } | |
1110 | } | |
1111 | ||
c906108c SS |
1112 | #define MAGIC_NULL_PID 42000 |
1113 | ||
1114 | static void | |
fba45db2 | 1115 | set_thread (int th, int gen) |
c906108c | 1116 | { |
d01949b6 | 1117 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1118 | char *buf = rs->buf; |
cce74817 | 1119 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1120 | |
1121 | if (state == th) | |
1122 | return; | |
1123 | ||
1124 | buf[0] = 'H'; | |
1125 | buf[1] = gen ? 'g' : 'c'; | |
1126 | if (th == MAGIC_NULL_PID) | |
1127 | { | |
1128 | buf[2] = '0'; | |
1129 | buf[3] = '\0'; | |
1130 | } | |
1131 | else if (th < 0) | |
ea9c271d | 1132 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 1133 | else |
ea9c271d | 1134 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 1135 | putpkt (buf); |
6d820c5c | 1136 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1137 | if (gen) |
c5aa993b | 1138 | general_thread = th; |
c906108c | 1139 | else |
cce74817 | 1140 | continue_thread = th; |
c906108c SS |
1141 | } |
1142 | \f | |
1143 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1144 | ||
1145 | static int | |
39f77062 | 1146 | remote_thread_alive (ptid_t ptid) |
c906108c | 1147 | { |
6d820c5c | 1148 | struct remote_state *rs = get_remote_state (); |
39f77062 | 1149 | int tid = PIDGET (ptid); |
c906108c | 1150 | |
cce74817 | 1151 | if (tid < 0) |
2e9f7625 | 1152 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1153 | else |
2e9f7625 DJ |
1154 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1155 | putpkt (rs->buf); | |
6d820c5c | 1156 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1157 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1158 | } |
1159 | ||
1160 | /* About these extended threadlist and threadinfo packets. They are | |
1161 | variable length packets but, the fields within them are often fixed | |
1162 | length. They are redundent enough to send over UDP as is the | |
1163 | remote protocol in general. There is a matching unit test module | |
1164 | in libstub. */ | |
1165 | ||
cce74817 JM |
1166 | #define OPAQUETHREADBYTES 8 |
1167 | ||
1168 | /* a 64 bit opaque identifier */ | |
1169 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1170 | ||
23860348 MS |
1171 | /* WARNING: This threadref data structure comes from the remote O.S., |
1172 | libstub protocol encoding, and remote.c. it is not particularly | |
1173 | changable. */ | |
cce74817 JM |
1174 | |
1175 | /* Right now, the internal structure is int. We want it to be bigger. | |
1176 | Plan to fix this. | |
c5aa993b | 1177 | */ |
cce74817 | 1178 | |
23860348 | 1179 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1180 | |
9d1f7ab2 | 1181 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1182 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1183 | |
1184 | struct gdb_ext_thread_info | |
c5aa993b | 1185 | { |
23860348 | 1186 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1187 | int active; /* Has state interesting to GDB? |
23860348 | 1188 | regs, stack. */ |
2bc416ba | 1189 | char display[256]; /* Brief state display, name, |
cedea757 | 1190 | blocked/suspended. */ |
23860348 | 1191 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1192 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1193 | whatever. */ |
c5aa993b | 1194 | }; |
cce74817 JM |
1195 | |
1196 | /* The volume of remote transfers can be limited by submitting | |
1197 | a mask containing bits specifying the desired information. | |
1198 | Use a union of these values as the 'selection' parameter to | |
1199 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1200 | */ |
cce74817 JM |
1201 | |
1202 | #define TAG_THREADID 1 | |
1203 | #define TAG_EXISTS 2 | |
1204 | #define TAG_DISPLAY 4 | |
1205 | #define TAG_THREADNAME 8 | |
c5aa993b | 1206 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1207 | |
23860348 | 1208 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1209 | |
b2dd6311 | 1210 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1211 | |
a14ed312 | 1212 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1213 | |
a14ed312 | 1214 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1215 | |
23860348 | 1216 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1217 | |
a14ed312 | 1218 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1219 | |
a14ed312 | 1220 | static char *pack_int (char *buf, int value); |
cce74817 | 1221 | |
a14ed312 | 1222 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1223 | |
a14ed312 | 1224 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1225 | |
23860348 | 1226 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1227 | |
23860348 | 1228 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1229 | |
23860348 | 1230 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1231 | |
23860348 | 1232 | static int threadref_to_int (threadref *ref); |
cce74817 | 1233 | |
23860348 | 1234 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1235 | |
23860348 | 1236 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1237 | |
2bc416ba | 1238 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1239 | threadref *id); |
cce74817 | 1240 | |
a14ed312 | 1241 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1242 | threadref *expectedref, |
a14ed312 KB |
1243 | struct gdb_ext_thread_info |
1244 | *info); | |
cce74817 JM |
1245 | |
1246 | ||
2bc416ba | 1247 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1248 | int fieldset, /*TAG mask */ |
a14ed312 | 1249 | struct gdb_ext_thread_info *info); |
cce74817 | 1250 | |
a14ed312 KB |
1251 | static char *pack_threadlist_request (char *pkt, int startflag, |
1252 | int threadcount, | |
23860348 | 1253 | threadref *nextthread); |
cce74817 | 1254 | |
a14ed312 KB |
1255 | static int parse_threadlist_response (char *pkt, |
1256 | int result_limit, | |
23860348 | 1257 | threadref *original_echo, |
2bc416ba | 1258 | threadref *resultlist, |
23860348 | 1259 | int *doneflag); |
cce74817 | 1260 | |
a14ed312 | 1261 | static int remote_get_threadlist (int startflag, |
23860348 | 1262 | threadref *nextthread, |
a14ed312 KB |
1263 | int result_limit, |
1264 | int *done, | |
2bc416ba | 1265 | int *result_count, |
23860348 | 1266 | threadref *threadlist); |
cce74817 | 1267 | |
23860348 | 1268 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1269 | |
a14ed312 KB |
1270 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1271 | void *context, int looplimit); | |
cce74817 | 1272 | |
23860348 | 1273 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1274 | |
23860348 | 1275 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1276 | |
1277 | static const char hexchars[] = "0123456789abcdef"; | |
1278 | ||
1279 | static int | |
fba45db2 | 1280 | ishex (int ch, int *val) |
c906108c SS |
1281 | { |
1282 | if ((ch >= 'a') && (ch <= 'f')) | |
1283 | { | |
1284 | *val = ch - 'a' + 10; | |
1285 | return 1; | |
1286 | } | |
1287 | if ((ch >= 'A') && (ch <= 'F')) | |
1288 | { | |
1289 | *val = ch - 'A' + 10; | |
1290 | return 1; | |
1291 | } | |
1292 | if ((ch >= '0') && (ch <= '9')) | |
1293 | { | |
1294 | *val = ch - '0'; | |
1295 | return 1; | |
1296 | } | |
1297 | return 0; | |
1298 | } | |
1299 | ||
1300 | static int | |
fba45db2 | 1301 | stubhex (int ch) |
c906108c SS |
1302 | { |
1303 | if (ch >= 'a' && ch <= 'f') | |
1304 | return ch - 'a' + 10; | |
1305 | if (ch >= '0' && ch <= '9') | |
1306 | return ch - '0'; | |
1307 | if (ch >= 'A' && ch <= 'F') | |
1308 | return ch - 'A' + 10; | |
1309 | return -1; | |
1310 | } | |
1311 | ||
1312 | static int | |
fba45db2 | 1313 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1314 | { |
1315 | int nibble; | |
1316 | int retval = 0; | |
1317 | ||
1318 | while (fieldlength) | |
1319 | { | |
1320 | nibble = stubhex (*buff++); | |
1321 | retval |= nibble; | |
1322 | fieldlength--; | |
1323 | if (fieldlength) | |
1324 | retval = retval << 4; | |
1325 | } | |
1326 | return retval; | |
1327 | } | |
1328 | ||
1329 | char * | |
fba45db2 | 1330 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1331 | ULONGEST *result) |
c906108c SS |
1332 | { |
1333 | int nibble; | |
d49c44d5 | 1334 | ULONGEST retval = 0; |
c906108c SS |
1335 | |
1336 | while (ishex (*buff, &nibble)) | |
1337 | { | |
1338 | buff++; | |
1339 | retval = retval << 4; | |
1340 | retval |= nibble & 0x0f; | |
1341 | } | |
1342 | *result = retval; | |
1343 | return buff; | |
1344 | } | |
1345 | ||
1346 | static char * | |
fba45db2 | 1347 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1348 | { |
1349 | ishex (*buf++, val); | |
1350 | return buf; | |
1351 | } | |
1352 | ||
1353 | static char * | |
fba45db2 | 1354 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1355 | { |
1356 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1357 | return buf; | |
1358 | } | |
1359 | ||
1360 | static char * | |
fba45db2 | 1361 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1362 | { |
1363 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1364 | *pkt++ = hexchars[(byte & 0xf)]; | |
1365 | return pkt; | |
1366 | } | |
1367 | ||
1368 | static char * | |
fba45db2 | 1369 | unpack_byte (char *buf, int *value) |
c906108c SS |
1370 | { |
1371 | *value = stub_unpack_int (buf, 2); | |
1372 | return buf + 2; | |
1373 | } | |
1374 | ||
1375 | static char * | |
fba45db2 | 1376 | pack_int (char *buf, int value) |
c906108c SS |
1377 | { |
1378 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1379 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1380 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1381 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1382 | return buf; | |
1383 | } | |
1384 | ||
1385 | static char * | |
fba45db2 | 1386 | unpack_int (char *buf, int *value) |
c906108c SS |
1387 | { |
1388 | *value = stub_unpack_int (buf, 8); | |
1389 | return buf + 8; | |
1390 | } | |
1391 | ||
23860348 | 1392 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1393 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1394 | |
1395 | static char * | |
fba45db2 | 1396 | pack_string (char *pkt, char *string) |
c906108c SS |
1397 | { |
1398 | char ch; | |
1399 | int len; | |
1400 | ||
1401 | len = strlen (string); | |
1402 | if (len > 200) | |
23860348 | 1403 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1404 | pkt = pack_hex_byte (pkt, len); |
1405 | while (len-- > 0) | |
1406 | { | |
1407 | ch = *string++; | |
1408 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1409 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1410 | *pkt++ = ch; |
1411 | } | |
1412 | return pkt; | |
1413 | } | |
1414 | #endif /* 0 (unused) */ | |
1415 | ||
1416 | static char * | |
fba45db2 | 1417 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1418 | { |
1419 | while (length--) | |
1420 | *dest++ = *src++; | |
1421 | *dest = '\0'; | |
1422 | return src; | |
1423 | } | |
1424 | ||
1425 | static char * | |
fba45db2 | 1426 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1427 | { |
1428 | char *limit; | |
1429 | unsigned char *altid; | |
1430 | ||
1431 | altid = (unsigned char *) id; | |
1432 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1433 | while (pkt < limit) | |
1434 | pkt = pack_hex_byte (pkt, *altid++); | |
1435 | return pkt; | |
1436 | } | |
1437 | ||
1438 | ||
1439 | static char * | |
fba45db2 | 1440 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1441 | { |
1442 | char *altref; | |
1443 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1444 | int x, y; | |
1445 | ||
1446 | altref = (char *) id; | |
1447 | ||
1448 | while (inbuf < limit) | |
1449 | { | |
1450 | x = stubhex (*inbuf++); | |
1451 | y = stubhex (*inbuf++); | |
1452 | *altref++ = (x << 4) | y; | |
1453 | } | |
1454 | return inbuf; | |
1455 | } | |
1456 | ||
1457 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1458 | ints. This is due to a mismatch of specifications. We would like | |
1459 | to use 64bit thread references internally. This is an adapter | |
1460 | function. */ | |
1461 | ||
1462 | void | |
fba45db2 | 1463 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1464 | { |
1465 | unsigned char *scan; | |
1466 | ||
1467 | scan = (unsigned char *) id; | |
1468 | { | |
1469 | int i = 4; | |
1470 | while (i--) | |
1471 | *scan++ = 0; | |
1472 | } | |
1473 | *scan++ = (value >> 24) & 0xff; | |
1474 | *scan++ = (value >> 16) & 0xff; | |
1475 | *scan++ = (value >> 8) & 0xff; | |
1476 | *scan++ = (value & 0xff); | |
1477 | } | |
1478 | ||
1479 | static int | |
fba45db2 | 1480 | threadref_to_int (threadref *ref) |
c906108c SS |
1481 | { |
1482 | int i, value = 0; | |
1483 | unsigned char *scan; | |
1484 | ||
cfd77fa1 | 1485 | scan = *ref; |
c906108c SS |
1486 | scan += 4; |
1487 | i = 4; | |
1488 | while (i-- > 0) | |
1489 | value = (value << 8) | ((*scan++) & 0xff); | |
1490 | return value; | |
1491 | } | |
1492 | ||
1493 | static void | |
fba45db2 | 1494 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1495 | { |
1496 | int i; | |
1497 | unsigned char *csrc, *cdest; | |
1498 | ||
1499 | csrc = (unsigned char *) src; | |
1500 | cdest = (unsigned char *) dest; | |
1501 | i = 8; | |
1502 | while (i--) | |
1503 | *cdest++ = *csrc++; | |
1504 | } | |
1505 | ||
1506 | static int | |
fba45db2 | 1507 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1508 | { |
23860348 | 1509 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1510 | #if 0 |
1511 | unsigned char *srcp, *destp; | |
1512 | int i, result; | |
1513 | srcp = (char *) src; | |
1514 | destp = (char *) dest; | |
1515 | ||
1516 | result = 1; | |
1517 | while (i-- > 0) | |
1518 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1519 | return result; | |
1520 | #endif | |
1521 | return 1; | |
1522 | } | |
1523 | ||
1524 | /* | |
c5aa993b JM |
1525 | threadid:1, # always request threadid |
1526 | context_exists:2, | |
1527 | display:4, | |
1528 | unique_name:8, | |
1529 | more_display:16 | |
1530 | */ | |
c906108c SS |
1531 | |
1532 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1533 | ||
1534 | static char * | |
fba45db2 | 1535 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1536 | { |
23860348 MS |
1537 | *pkt++ = 'q'; /* Info Query */ |
1538 | *pkt++ = 'P'; /* process or thread info */ | |
1539 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1540 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1541 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1542 | return pkt; |
1543 | } | |
1544 | ||
23860348 | 1545 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1546 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1547 | add more fields as time goes by. */ |
c906108c | 1548 | |
23860348 | 1549 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1550 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1551 | fetch registers and its stack? */ |
c5aa993b | 1552 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1553 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1554 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1555 | the process. */ |
c906108c SS |
1556 | |
1557 | static int | |
fba45db2 KB |
1558 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1559 | struct gdb_ext_thread_info *info) | |
c906108c | 1560 | { |
d01949b6 | 1561 | struct remote_state *rs = get_remote_state (); |
c906108c | 1562 | int mask, length; |
cfd77fa1 | 1563 | int tag; |
c906108c | 1564 | threadref ref; |
6d820c5c | 1565 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1566 | int retval = 1; |
1567 | ||
23860348 | 1568 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1569 | info->active = 0; |
1570 | info->display[0] = '\0'; | |
1571 | info->shortname[0] = '\0'; | |
1572 | info->more_display[0] = '\0'; | |
1573 | ||
23860348 MS |
1574 | /* Assume the characters indicating the packet type have been |
1575 | stripped. */ | |
c906108c SS |
1576 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1577 | pkt = unpack_threadid (pkt, &ref); | |
1578 | ||
1579 | if (mask == 0) | |
8a3fe4f8 | 1580 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1581 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1582 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1583 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1584 | return 0; |
1585 | } | |
1586 | copy_threadref (&info->threadid, &ref); | |
1587 | ||
23860348 | 1588 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1589 | |
23860348 MS |
1590 | /* Packets are terminated with nulls. */ |
1591 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1592 | { |
1593 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1594 | pkt = unpack_byte (pkt, &length); /* length */ |
1595 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1596 | { |
8a3fe4f8 | 1597 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1598 | retval = 0; |
1599 | break; | |
1600 | } | |
1601 | if (tag == TAG_THREADID) | |
1602 | { | |
1603 | if (length != 16) | |
1604 | { | |
8a3fe4f8 | 1605 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1606 | retval = 0; |
1607 | break; | |
1608 | } | |
1609 | pkt = unpack_threadid (pkt, &ref); | |
1610 | mask = mask & ~TAG_THREADID; | |
1611 | continue; | |
1612 | } | |
1613 | if (tag == TAG_EXISTS) | |
1614 | { | |
1615 | info->active = stub_unpack_int (pkt, length); | |
1616 | pkt += length; | |
1617 | mask = mask & ~(TAG_EXISTS); | |
1618 | if (length > 8) | |
1619 | { | |
8a3fe4f8 | 1620 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1621 | retval = 0; |
1622 | break; | |
1623 | } | |
1624 | continue; | |
1625 | } | |
1626 | if (tag == TAG_THREADNAME) | |
1627 | { | |
1628 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1629 | mask = mask & ~TAG_THREADNAME; | |
1630 | continue; | |
1631 | } | |
1632 | if (tag == TAG_DISPLAY) | |
1633 | { | |
1634 | pkt = unpack_string (pkt, &info->display[0], length); | |
1635 | mask = mask & ~TAG_DISPLAY; | |
1636 | continue; | |
1637 | } | |
1638 | if (tag == TAG_MOREDISPLAY) | |
1639 | { | |
1640 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1641 | mask = mask & ~TAG_MOREDISPLAY; | |
1642 | continue; | |
1643 | } | |
8a3fe4f8 | 1644 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1645 | break; /* Not a tag we know about. */ |
c906108c SS |
1646 | } |
1647 | return retval; | |
1648 | } | |
1649 | ||
1650 | static int | |
fba45db2 KB |
1651 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1652 | struct gdb_ext_thread_info *info) | |
c906108c | 1653 | { |
d01949b6 | 1654 | struct remote_state *rs = get_remote_state (); |
c906108c | 1655 | int result; |
c906108c | 1656 | |
2e9f7625 DJ |
1657 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1658 | putpkt (rs->buf); | |
6d820c5c | 1659 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1660 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1661 | threadid, info); |
c906108c SS |
1662 | return result; |
1663 | } | |
1664 | ||
c906108c SS |
1665 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1666 | ||
1667 | static char * | |
fba45db2 KB |
1668 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1669 | threadref *nextthread) | |
c906108c SS |
1670 | { |
1671 | *pkt++ = 'q'; /* info query packet */ | |
1672 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1673 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1674 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1675 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1676 | *pkt = '\0'; | |
1677 | return pkt; | |
1678 | } | |
1679 | ||
1680 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1681 | ||
1682 | static int | |
fba45db2 KB |
1683 | parse_threadlist_response (char *pkt, int result_limit, |
1684 | threadref *original_echo, threadref *resultlist, | |
1685 | int *doneflag) | |
c906108c | 1686 | { |
d01949b6 | 1687 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1688 | char *limit; |
1689 | int count, resultcount, done; | |
1690 | ||
1691 | resultcount = 0; | |
1692 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1693 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1694 | /* done parse past here */ |
c906108c SS |
1695 | pkt = unpack_byte (pkt, &count); /* count field */ |
1696 | pkt = unpack_nibble (pkt, &done); | |
1697 | /* The first threadid is the argument threadid. */ | |
1698 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1699 | while ((count-- > 0) && (pkt < limit)) | |
1700 | { | |
1701 | pkt = unpack_threadid (pkt, resultlist++); | |
1702 | if (resultcount++ >= result_limit) | |
1703 | break; | |
1704 | } | |
1705 | if (doneflag) | |
1706 | *doneflag = done; | |
1707 | return resultcount; | |
1708 | } | |
1709 | ||
1710 | static int | |
fba45db2 KB |
1711 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1712 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1713 | { |
d01949b6 | 1714 | struct remote_state *rs = get_remote_state (); |
c906108c | 1715 | static threadref echo_nextthread; |
c906108c SS |
1716 | int result = 1; |
1717 | ||
23860348 | 1718 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1719 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1720 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1721 | |
6d820c5c DJ |
1722 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1723 | putpkt (rs->buf); | |
1724 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1725 | |
1726 | *result_count = | |
6d820c5c | 1727 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1728 | threadlist, done); |
1729 | ||
1730 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1731 | { | |
23860348 MS |
1732 | /* FIXME: This is a good reason to drop the packet. */ |
1733 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1734 | /* Possabilities : |
1735 | retransmit immediatly - race conditions | |
1736 | retransmit after timeout - yes | |
1737 | exit | |
1738 | wait for packet, then exit | |
1739 | */ | |
8a3fe4f8 | 1740 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1741 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1742 | } |
1743 | if (*result_count <= 0) | |
1744 | { | |
1745 | if (*done != 1) | |
1746 | { | |
8a3fe4f8 | 1747 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1748 | result = 0; |
1749 | } | |
1750 | return result; /* break; */ | |
1751 | } | |
1752 | if (*result_count > result_limit) | |
1753 | { | |
1754 | *result_count = 0; | |
8a3fe4f8 | 1755 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1756 | return 0; |
1757 | } | |
1758 | return result; | |
1759 | } | |
1760 | ||
23860348 MS |
1761 | /* This is the interface between remote and threads, remotes upper |
1762 | interface. */ | |
c906108c SS |
1763 | |
1764 | /* remote_find_new_threads retrieves the thread list and for each | |
1765 | thread in the list, looks up the thread in GDB's internal list, | |
1766 | ading the thread if it does not already exist. This involves | |
1767 | getting partial thread lists from the remote target so, polling the | |
1768 | quit_flag is required. */ | |
1769 | ||
1770 | ||
23860348 | 1771 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1772 | |
1773 | #define MAXTHREADLISTRESULTS 32 | |
1774 | ||
1775 | static int | |
fba45db2 KB |
1776 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1777 | int looplimit) | |
c906108c SS |
1778 | { |
1779 | int done, i, result_count; | |
1780 | int startflag = 1; | |
1781 | int result = 1; | |
1782 | int loopcount = 0; | |
1783 | static threadref nextthread; | |
1784 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1785 | ||
1786 | done = 0; | |
1787 | while (!done) | |
1788 | { | |
1789 | if (loopcount++ > looplimit) | |
1790 | { | |
1791 | result = 0; | |
8a3fe4f8 | 1792 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1793 | break; |
1794 | } | |
1795 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1796 | &done, &result_count, resultthreadlist)) | |
1797 | { | |
1798 | result = 0; | |
1799 | break; | |
1800 | } | |
23860348 | 1801 | /* Clear for later iterations. */ |
c906108c SS |
1802 | startflag = 0; |
1803 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1804 | if (result_count >= 1) | |
1805 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1806 | i = 0; | |
1807 | while (result_count--) | |
1808 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1809 | break; | |
1810 | } | |
1811 | return result; | |
1812 | } | |
1813 | ||
1814 | static int | |
fba45db2 | 1815 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1816 | { |
39f77062 | 1817 | ptid_t ptid; |
c906108c | 1818 | |
39f77062 KB |
1819 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1820 | ||
1821 | if (!in_thread_list (ptid)) | |
1822 | add_thread (ptid); | |
c906108c SS |
1823 | return 1; /* continue iterator */ |
1824 | } | |
1825 | ||
1826 | #define CRAZY_MAX_THREADS 1000 | |
1827 | ||
39f77062 KB |
1828 | static ptid_t |
1829 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1830 | { |
d01949b6 | 1831 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1832 | |
1833 | putpkt ("qC"); | |
6d820c5c | 1834 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1835 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c273b20f JB |
1836 | /* Use strtoul here, so we'll correctly parse values whose highest |
1837 | bit is set. The protocol carries them as a simple series of | |
1838 | hex digits; in the absence of a sign, strtol will see such | |
1839 | values as positive numbers out of range for signed 'long', and | |
1840 | return LONG_MAX to indicate an overflow. */ | |
2e9f7625 | 1841 | return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16)); |
c906108c SS |
1842 | else |
1843 | return oldpid; | |
1844 | } | |
1845 | ||
802188a7 RM |
1846 | /* Find new threads for info threads command. |
1847 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1848 | */ |
cce74817 JM |
1849 | |
1850 | static void | |
fba45db2 | 1851 | remote_find_new_threads (void) |
c906108c | 1852 | { |
c5aa993b JM |
1853 | remote_threadlist_iterator (remote_newthread_step, 0, |
1854 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1855 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1856 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1857 | } |
1858 | ||
9d1f7ab2 MS |
1859 | /* |
1860 | * Find all threads for info threads command. | |
1861 | * Uses new thread protocol contributed by Cisco. | |
1862 | * Falls back and attempts to use the older method (above) | |
1863 | * if the target doesn't respond to the new method. | |
1864 | */ | |
1865 | ||
0f71a2f6 JM |
1866 | static void |
1867 | remote_threads_info (void) | |
1868 | { | |
d01949b6 | 1869 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1870 | char *bufp; |
0f71a2f6 JM |
1871 | int tid; |
1872 | ||
1873 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1874 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1875 | |
9d1f7ab2 MS |
1876 | if (use_threadinfo_query) |
1877 | { | |
1878 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1879 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1880 | bufp = rs->buf; |
9d1f7ab2 | 1881 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1882 | { |
9d1f7ab2 MS |
1883 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1884 | { | |
1885 | do | |
1886 | { | |
c273b20f JB |
1887 | /* Use strtoul here, so we'll correctly parse values |
1888 | whose highest bit is set. The protocol carries | |
1889 | them as a simple series of hex digits; in the | |
1890 | absence of a sign, strtol will see such values as | |
1891 | positive numbers out of range for signed 'long', | |
1892 | and return LONG_MAX to indicate an overflow. */ | |
1893 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1894 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1895 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1896 | } |
1897 | while (*bufp++ == ','); /* comma-separated list */ | |
1898 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1899 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1900 | bufp = rs->buf; |
9d1f7ab2 MS |
1901 | } |
1902 | return; /* done */ | |
1903 | } | |
1904 | } | |
1905 | ||
23860348 | 1906 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1907 | use_threadinfo_query = 0; |
1908 | remote_find_new_threads (); | |
1909 | return; | |
1910 | } | |
1911 | ||
802188a7 | 1912 | /* |
9d1f7ab2 MS |
1913 | * Collect a descriptive string about the given thread. |
1914 | * The target may say anything it wants to about the thread | |
1915 | * (typically info about its blocked / runnable state, name, etc.). | |
1916 | * This string will appear in the info threads display. | |
802188a7 | 1917 | * |
9d1f7ab2 MS |
1918 | * Optional: targets are not required to implement this function. |
1919 | */ | |
1920 | ||
1921 | static char * | |
1922 | remote_threads_extra_info (struct thread_info *tp) | |
1923 | { | |
d01949b6 | 1924 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1925 | int result; |
1926 | int set; | |
1927 | threadref id; | |
1928 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1929 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1930 | int n = 0; /* position in display_buf */ |
1931 | ||
1932 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1933 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1934 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1935 | |
1936 | if (use_threadextra_query) | |
1937 | { | |
2e9f7625 | 1938 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1939 | PIDGET (tp->ptid)); |
2e9f7625 | 1940 | putpkt (rs->buf); |
6d820c5c | 1941 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1942 | if (rs->buf[0] != 0) |
9d1f7ab2 | 1943 | { |
2e9f7625 DJ |
1944 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
1945 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 1946 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1947 | return display_buf; |
1948 | } | |
0f71a2f6 | 1949 | } |
9d1f7ab2 MS |
1950 | |
1951 | /* If the above query fails, fall back to the old method. */ | |
1952 | use_threadextra_query = 0; | |
1953 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1954 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1955 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1956 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1957 | if (threadinfo.active) | |
0f71a2f6 | 1958 | { |
9d1f7ab2 | 1959 | if (*threadinfo.shortname) |
2bc416ba | 1960 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 1961 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 1962 | if (*threadinfo.display) |
2bc416ba | 1963 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1964 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 1965 | if (*threadinfo.more_display) |
2bc416ba | 1966 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1967 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
1968 | |
1969 | if (n > 0) | |
c5aa993b | 1970 | { |
23860348 | 1971 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1972 | if (',' == display_buf[n-1]) |
1973 | display_buf[n-1] = ' '; | |
1974 | return display_buf; | |
c5aa993b | 1975 | } |
0f71a2f6 | 1976 | } |
9d1f7ab2 | 1977 | return NULL; |
0f71a2f6 | 1978 | } |
c906108c | 1979 | \f |
c5aa993b | 1980 | |
24b06219 | 1981 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1982 | |
1983 | static void | |
fba45db2 | 1984 | extended_remote_restart (void) |
c906108c | 1985 | { |
d01949b6 | 1986 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1987 | |
1988 | /* Send the restart command; for reasons I don't understand the | |
1989 | remote side really expects a number after the "R". */ | |
ea9c271d | 1990 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1991 | putpkt (rs->buf); |
c906108c | 1992 | |
ad9a8f3f | 1993 | remote_fileio_reset (); |
2bc416ba | 1994 | |
c906108c SS |
1995 | /* Now query for status so this looks just like we restarted |
1996 | gdbserver from scratch. */ | |
1997 | putpkt ("?"); | |
01d3a6ce | 1998 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1999 | } |
2000 | \f | |
2001 | /* Clean up connection to a remote debugger. */ | |
2002 | ||
c906108c | 2003 | static void |
fba45db2 | 2004 | remote_close (int quitting) |
c906108c SS |
2005 | { |
2006 | if (remote_desc) | |
2cd58942 | 2007 | serial_close (remote_desc); |
c906108c SS |
2008 | remote_desc = NULL; |
2009 | } | |
2010 | ||
23860348 | 2011 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2012 | |
2013 | static void | |
fba45db2 | 2014 | get_offsets (void) |
c906108c | 2015 | { |
d01949b6 | 2016 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2017 | char *buf; |
085dd6e6 | 2018 | char *ptr; |
31d99776 DJ |
2019 | int lose, num_segments = 0, do_sections, do_segments; |
2020 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2021 | struct section_offsets *offs; |
31d99776 DJ |
2022 | struct symfile_segment_data *data; |
2023 | ||
2024 | if (symfile_objfile == NULL) | |
2025 | return; | |
c906108c SS |
2026 | |
2027 | putpkt ("qOffsets"); | |
6d820c5c | 2028 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2029 | buf = rs->buf; |
c906108c SS |
2030 | |
2031 | if (buf[0] == '\000') | |
2032 | return; /* Return silently. Stub doesn't support | |
23860348 | 2033 | this command. */ |
c906108c SS |
2034 | if (buf[0] == 'E') |
2035 | { | |
8a3fe4f8 | 2036 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2037 | return; |
2038 | } | |
2039 | ||
2040 | /* Pick up each field in turn. This used to be done with scanf, but | |
2041 | scanf will make trouble if CORE_ADDR size doesn't match | |
2042 | conversion directives correctly. The following code will work | |
2043 | with any size of CORE_ADDR. */ | |
2044 | text_addr = data_addr = bss_addr = 0; | |
2045 | ptr = buf; | |
2046 | lose = 0; | |
2047 | ||
2048 | if (strncmp (ptr, "Text=", 5) == 0) | |
2049 | { | |
2050 | ptr += 5; | |
2051 | /* Don't use strtol, could lose on big values. */ | |
2052 | while (*ptr && *ptr != ';') | |
2053 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2054 | |
31d99776 DJ |
2055 | if (strncmp (ptr, ";Data=", 6) == 0) |
2056 | { | |
2057 | ptr += 6; | |
2058 | while (*ptr && *ptr != ';') | |
2059 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2060 | } | |
2061 | else | |
2062 | lose = 1; | |
2063 | ||
2064 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2065 | { | |
2066 | ptr += 5; | |
2067 | while (*ptr && *ptr != ';') | |
2068 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 2069 | |
31d99776 DJ |
2070 | if (bss_addr != data_addr) |
2071 | warning (_("Target reported unsupported offsets: %s"), buf); | |
2072 | } | |
2073 | else | |
2074 | lose = 1; | |
2075 | } | |
2076 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 2077 | { |
31d99776 DJ |
2078 | ptr += 8; |
2079 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 2080 | while (*ptr && *ptr != ';') |
31d99776 DJ |
2081 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
2082 | num_segments = 1; | |
2083 | ||
2084 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
2085 | { | |
2086 | ptr += 9; | |
2087 | while (*ptr && *ptr != ';') | |
2088 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2089 | num_segments++; | |
2090 | } | |
c906108c SS |
2091 | } |
2092 | else | |
2093 | lose = 1; | |
2094 | ||
2095 | if (lose) | |
8a3fe4f8 | 2096 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
2097 | else if (*ptr != '\0') |
2098 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 2099 | |
802188a7 | 2100 | offs = ((struct section_offsets *) |
a39a16c4 | 2101 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2102 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2103 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2104 | |
31d99776 DJ |
2105 | data = get_symfile_segment_data (symfile_objfile->obfd); |
2106 | do_segments = (data != NULL); | |
2107 | do_sections = num_segments == 0; | |
c906108c | 2108 | |
31d99776 DJ |
2109 | /* Text= and Data= specify offsets for the text and data sections, |
2110 | but symfile_map_offsets_to_segments expects base addresses | |
2111 | instead of offsets. If we have two segments, we can still | |
2112 | try to relocate the whole segments instead of just ".text" | |
2113 | and ".data". */ | |
2114 | if (num_segments == 0) | |
2115 | { | |
2116 | do_sections = 1; | |
2117 | if (data == NULL || data->num_segments != 2) | |
2118 | do_segments = 0; | |
2119 | else | |
2120 | { | |
2121 | segments[0] = data->segment_bases[0] + text_addr; | |
2122 | segments[1] = data->segment_bases[1] + data_addr; | |
2123 | } | |
2124 | } | |
2125 | else | |
2126 | { | |
2127 | do_sections = 0; | |
2128 | segments[0] = text_addr; | |
2129 | segments[1] = data_addr; | |
2130 | } | |
2131 | ||
2132 | if (do_segments) | |
2133 | { | |
2134 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
2135 | offs, num_segments, segments); | |
2136 | ||
2137 | if (ret == 0 && !do_sections) | |
2138 | error (_("Can not handle qOffsets TextSeg response with this symbol file")); | |
2139 | ||
2140 | if (ret > 0) | |
2141 | do_sections = 0; | |
2142 | } | |
c906108c | 2143 | |
31d99776 DJ |
2144 | free_symfile_segment_data (data); |
2145 | ||
2146 | if (do_sections) | |
2147 | { | |
2148 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
2149 | ||
2150 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2151 | because that's what nlmconv does now. The real solution requires changes | |
2152 | to the stub and remote.c that I don't have time to do right now. */ | |
2153 | ||
2154 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
2155 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
2156 | } | |
c906108c SS |
2157 | |
2158 | objfile_relocate (symfile_objfile, offs); | |
2159 | } | |
2160 | ||
8621d6a9 | 2161 | /* Stub for catch_exception. */ |
0f71a2f6 | 2162 | |
9cbc821d | 2163 | static void |
8621d6a9 | 2164 | remote_start_remote (struct ui_out *uiout, void *from_tty_p) |
c906108c | 2165 | { |
8621d6a9 DJ |
2166 | int from_tty = * (int *) from_tty_p; |
2167 | ||
23860348 | 2168 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2169 | |
2170 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2171 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2172 | |
2173 | /* Let the stub know that we want it to return the thread. */ | |
2174 | set_thread (-1, 0); | |
2175 | ||
39f77062 | 2176 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2177 | |
23860348 | 2178 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2179 | |
23860348 | 2180 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2181 | immediate_quit--; |
c906108c | 2182 | |
8621d6a9 | 2183 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
c906108c SS |
2184 | } |
2185 | ||
2186 | /* Open a connection to a remote debugger. | |
2187 | NAME is the filename used for communication. */ | |
2188 | ||
2189 | static void | |
fba45db2 | 2190 | remote_open (char *name, int from_tty) |
c906108c | 2191 | { |
92d1e331 | 2192 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2193 | } |
2194 | ||
23860348 | 2195 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2196 | static void |
fba45db2 | 2197 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2198 | { |
92d1e331 | 2199 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2200 | } |
2201 | ||
c906108c SS |
2202 | /* Open a connection to a remote debugger using the extended |
2203 | remote gdb protocol. NAME is the filename used for communication. */ | |
2204 | ||
2205 | static void | |
fba45db2 | 2206 | extended_remote_open (char *name, int from_tty) |
c906108c | 2207 | { |
92d1e331 DJ |
2208 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2209 | 0 /* async_p */); | |
c906108c SS |
2210 | } |
2211 | ||
23860348 | 2212 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2213 | static void |
fba45db2 | 2214 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2215 | { |
92d1e331 DJ |
2216 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2217 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2218 | } |
2219 | ||
c906108c SS |
2220 | /* Generic code for opening a connection to a remote target. */ |
2221 | ||
d471ea57 AC |
2222 | static void |
2223 | init_all_packet_configs (void) | |
2224 | { | |
2225 | int i; | |
444abaca DJ |
2226 | for (i = 0; i < PACKET_MAX; i++) |
2227 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2228 | } |
2229 | ||
23860348 | 2230 | /* Symbol look-up. */ |
dc8acb97 MS |
2231 | |
2232 | static void | |
2233 | remote_check_symbols (struct objfile *objfile) | |
2234 | { | |
d01949b6 | 2235 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2236 | char *msg, *reply, *tmp; |
2237 | struct minimal_symbol *sym; | |
2238 | int end; | |
2239 | ||
444abaca | 2240 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2241 | return; |
2242 | ||
6d820c5c DJ |
2243 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2244 | because we need both at the same time. */ | |
ea9c271d | 2245 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2246 | |
23860348 | 2247 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2248 | |
2249 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2250 | getpkt (&rs->buf, &rs->buf_size, 0); |
2251 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2252 | reply = rs->buf; |
dc8acb97 MS |
2253 | |
2254 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2255 | { | |
2256 | tmp = &reply[8]; | |
cfd77fa1 | 2257 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2258 | msg[end] = '\0'; |
2259 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2260 | if (sym == NULL) | |
ea9c271d | 2261 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2262 | else |
ea9c271d | 2263 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", |
ecbc58df WZ |
2264 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2265 | &reply[8]); | |
dc8acb97 | 2266 | putpkt (msg); |
6d820c5c | 2267 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2268 | reply = rs->buf; |
dc8acb97 MS |
2269 | } |
2270 | } | |
2271 | ||
9db8d71f DJ |
2272 | static struct serial * |
2273 | remote_serial_open (char *name) | |
2274 | { | |
2275 | static int udp_warning = 0; | |
2276 | ||
2277 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2278 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2279 | serial connection is reliable and not the serial connection promising | |
2280 | to be. */ | |
2281 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2282 | { | |
8a3fe4f8 AC |
2283 | warning (_("\ |
2284 | The remote protocol may be unreliable over UDP.\n\ | |
2285 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2286 | udp_warning = 1; |
2287 | } | |
2288 | ||
2289 | return serial_open (name); | |
2290 | } | |
2291 | ||
be2a5f71 DJ |
2292 | /* This type describes each known response to the qSupported |
2293 | packet. */ | |
2294 | struct protocol_feature | |
2295 | { | |
2296 | /* The name of this protocol feature. */ | |
2297 | const char *name; | |
2298 | ||
2299 | /* The default for this protocol feature. */ | |
2300 | enum packet_support default_support; | |
2301 | ||
2302 | /* The function to call when this feature is reported, or after | |
2303 | qSupported processing if the feature is not supported. | |
2304 | The first argument points to this structure. The second | |
2305 | argument indicates whether the packet requested support be | |
2306 | enabled, disabled, or probed (or the default, if this function | |
2307 | is being called at the end of processing and this feature was | |
2308 | not reported). The third argument may be NULL; if not NULL, it | |
2309 | is a NUL-terminated string taken from the packet following | |
2310 | this feature's name and an equals sign. */ | |
2311 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2312 | const char *); | |
2313 | ||
2314 | /* The corresponding packet for this feature. Only used if | |
2315 | FUNC is remote_supported_packet. */ | |
2316 | int packet; | |
2317 | }; | |
2318 | ||
be2a5f71 DJ |
2319 | static void |
2320 | remote_supported_packet (const struct protocol_feature *feature, | |
2321 | enum packet_support support, | |
2322 | const char *argument) | |
2323 | { | |
2324 | if (argument) | |
2325 | { | |
2326 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2327 | " \"%s\"."), feature->name); | |
2328 | return; | |
2329 | } | |
2330 | ||
2331 | if (remote_protocol_packets[feature->packet].support | |
2332 | == PACKET_SUPPORT_UNKNOWN) | |
2333 | remote_protocol_packets[feature->packet].support = support; | |
2334 | } | |
be2a5f71 DJ |
2335 | |
2336 | static void | |
2337 | remote_packet_size (const struct protocol_feature *feature, | |
2338 | enum packet_support support, const char *value) | |
2339 | { | |
2340 | struct remote_state *rs = get_remote_state (); | |
2341 | ||
2342 | int packet_size; | |
2343 | char *value_end; | |
2344 | ||
2345 | if (support != PACKET_ENABLE) | |
2346 | return; | |
2347 | ||
2348 | if (value == NULL || *value == '\0') | |
2349 | { | |
2350 | warning (_("Remote target reported \"%s\" without a size."), | |
2351 | feature->name); | |
2352 | return; | |
2353 | } | |
2354 | ||
2355 | errno = 0; | |
2356 | packet_size = strtol (value, &value_end, 16); | |
2357 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2358 | { | |
2359 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2360 | feature->name, value); | |
2361 | return; | |
2362 | } | |
2363 | ||
2364 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2365 | { | |
2366 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2367 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2368 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2369 | } | |
2370 | ||
2371 | /* Record the new maximum packet size. */ | |
2372 | rs->explicit_packet_size = packet_size; | |
2373 | } | |
2374 | ||
2375 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2376 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2377 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 2378 | PACKET_qXfer_auxv }, |
23181151 DJ |
2379 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
2380 | PACKET_qXfer_features }, | |
fd79ecee | 2381 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 2382 | PACKET_qXfer_memory_map }, |
4de6483e UW |
2383 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
2384 | PACKET_qXfer_spu_read }, | |
2385 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
2386 | PACKET_qXfer_spu_write }, | |
89be2091 DJ |
2387 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
2388 | PACKET_QPassSignals }, | |
be2a5f71 DJ |
2389 | }; |
2390 | ||
2391 | static void | |
2392 | remote_query_supported (void) | |
2393 | { | |
2394 | struct remote_state *rs = get_remote_state (); | |
2395 | char *next; | |
2396 | int i; | |
2397 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2398 | ||
2399 | /* The packet support flags are handled differently for this packet | |
2400 | than for most others. We treat an error, a disabled packet, and | |
2401 | an empty response identically: any features which must be reported | |
2402 | to be used will be automatically disabled. An empty buffer | |
2403 | accomplishes this, since that is also the representation for a list | |
2404 | containing no features. */ | |
2405 | ||
2406 | rs->buf[0] = 0; | |
2407 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2408 | { | |
2409 | putpkt ("qSupported"); | |
2410 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2411 | ||
2412 | /* If an error occured, warn, but do not return - just reset the | |
2413 | buffer to empty and go on to disable features. */ | |
2414 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2415 | == PACKET_ERROR) | |
2416 | { | |
2417 | warning (_("Remote failure reply: %s"), rs->buf); | |
2418 | rs->buf[0] = 0; | |
2419 | } | |
2420 | } | |
2421 | ||
2422 | memset (seen, 0, sizeof (seen)); | |
2423 | ||
2424 | next = rs->buf; | |
2425 | while (*next) | |
2426 | { | |
2427 | enum packet_support is_supported; | |
2428 | char *p, *end, *name_end, *value; | |
2429 | ||
2430 | /* First separate out this item from the rest of the packet. If | |
2431 | there's another item after this, we overwrite the separator | |
2432 | (terminated strings are much easier to work with). */ | |
2433 | p = next; | |
2434 | end = strchr (p, ';'); | |
2435 | if (end == NULL) | |
2436 | { | |
2437 | end = p + strlen (p); | |
2438 | next = end; | |
2439 | } | |
2440 | else | |
2441 | { | |
89be2091 DJ |
2442 | *end = '\0'; |
2443 | next = end + 1; | |
2444 | ||
be2a5f71 DJ |
2445 | if (end == p) |
2446 | { | |
2447 | warning (_("empty item in \"qSupported\" response")); | |
2448 | continue; | |
2449 | } | |
be2a5f71 DJ |
2450 | } |
2451 | ||
2452 | name_end = strchr (p, '='); | |
2453 | if (name_end) | |
2454 | { | |
2455 | /* This is a name=value entry. */ | |
2456 | is_supported = PACKET_ENABLE; | |
2457 | value = name_end + 1; | |
2458 | *name_end = '\0'; | |
2459 | } | |
2460 | else | |
2461 | { | |
2462 | value = NULL; | |
2463 | switch (end[-1]) | |
2464 | { | |
2465 | case '+': | |
2466 | is_supported = PACKET_ENABLE; | |
2467 | break; | |
2468 | ||
2469 | case '-': | |
2470 | is_supported = PACKET_DISABLE; | |
2471 | break; | |
2472 | ||
2473 | case '?': | |
2474 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2475 | break; | |
2476 | ||
2477 | default: | |
2478 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2479 | continue; | |
2480 | } | |
2481 | end[-1] = '\0'; | |
2482 | } | |
2483 | ||
2484 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2485 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2486 | { | |
2487 | const struct protocol_feature *feature; | |
2488 | ||
2489 | seen[i] = 1; | |
2490 | feature = &remote_protocol_features[i]; | |
2491 | feature->func (feature, is_supported, value); | |
2492 | break; | |
2493 | } | |
2494 | } | |
2495 | ||
2496 | /* If we increased the packet size, make sure to increase the global | |
2497 | buffer size also. We delay this until after parsing the entire | |
2498 | qSupported packet, because this is the same buffer we were | |
2499 | parsing. */ | |
2500 | if (rs->buf_size < rs->explicit_packet_size) | |
2501 | { | |
2502 | rs->buf_size = rs->explicit_packet_size; | |
2503 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2504 | } | |
2505 | ||
2506 | /* Handle the defaults for unmentioned features. */ | |
2507 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2508 | if (!seen[i]) | |
2509 | { | |
2510 | const struct protocol_feature *feature; | |
2511 | ||
2512 | feature = &remote_protocol_features[i]; | |
2513 | feature->func (feature, feature->default_support, NULL); | |
2514 | } | |
2515 | } | |
2516 | ||
2517 | ||
c906108c | 2518 | static void |
fba45db2 | 2519 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2520 | int extended_p, int async_p) |
c906108c | 2521 | { |
d01949b6 | 2522 | struct remote_state *rs = get_remote_state (); |
c906108c | 2523 | if (name == 0) |
8a3fe4f8 | 2524 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2525 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2526 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2527 | |
23860348 | 2528 | /* See FIXME above. */ |
92d1e331 DJ |
2529 | if (!async_p) |
2530 | wait_forever_enabled_p = 1; | |
6426a772 | 2531 | |
c906108c SS |
2532 | target_preopen (from_tty); |
2533 | ||
2534 | unpush_target (target); | |
2535 | ||
89be2091 DJ |
2536 | /* Make sure we send the passed signals list the next time we resume. */ |
2537 | xfree (last_pass_packet); | |
2538 | last_pass_packet = NULL; | |
2539 | ||
ad9a8f3f | 2540 | remote_fileio_reset (); |
1dd41f16 NS |
2541 | reopen_exec_file (); |
2542 | reread_symbols (); | |
2543 | ||
9db8d71f | 2544 | remote_desc = remote_serial_open (name); |
c906108c SS |
2545 | if (!remote_desc) |
2546 | perror_with_name (name); | |
2547 | ||
2548 | if (baud_rate != -1) | |
2549 | { | |
2cd58942 | 2550 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2551 | { |
9b74d5d3 KB |
2552 | /* The requested speed could not be set. Error out to |
2553 | top level after closing remote_desc. Take care to | |
2554 | set remote_desc to NULL to avoid closing remote_desc | |
2555 | more than once. */ | |
2cd58942 | 2556 | serial_close (remote_desc); |
9b74d5d3 | 2557 | remote_desc = NULL; |
c906108c SS |
2558 | perror_with_name (name); |
2559 | } | |
2560 | } | |
2561 | ||
2cd58942 | 2562 | serial_raw (remote_desc); |
c906108c SS |
2563 | |
2564 | /* If there is something sitting in the buffer we might take it as a | |
2565 | response to a command, which would be bad. */ | |
2cd58942 | 2566 | serial_flush_input (remote_desc); |
c906108c SS |
2567 | |
2568 | if (from_tty) | |
2569 | { | |
2570 | puts_filtered ("Remote debugging using "); | |
2571 | puts_filtered (name); | |
2572 | puts_filtered ("\n"); | |
2573 | } | |
23860348 | 2574 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2575 | |
be2a5f71 DJ |
2576 | /* Reset the target state; these things will be queried either by |
2577 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2578 | init_all_packet_configs (); |
be2a5f71 | 2579 | rs->explicit_packet_size = 0; |
802188a7 | 2580 | |
c5aa993b | 2581 | general_thread = -2; |
cce74817 | 2582 | continue_thread = -2; |
c906108c | 2583 | |
9d1f7ab2 MS |
2584 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2585 | use_threadinfo_query = 1; | |
2586 | use_threadextra_query = 1; | |
2587 | ||
be2a5f71 DJ |
2588 | /* The first packet we send to the target is the optional "supported |
2589 | packets" request. If the target can answer this, it will tell us | |
2590 | which later probes to skip. */ | |
2591 | remote_query_supported (); | |
2592 | ||
424163ea DJ |
2593 | /* Next, if the target can specify a description, read it. We do |
2594 | this before anything involving memory or registers. */ | |
2595 | target_find_description (); | |
2596 | ||
c906108c SS |
2597 | /* Without this, some commands which require an active target (such |
2598 | as kill) won't work. This variable serves (at least) double duty | |
2599 | as both the pid of the target process (if it has such), and as a | |
2600 | flag indicating that a target is active. These functions should | |
2601 | be split out into seperate variables, especially since GDB will | |
2602 | someday have a notion of debugging several processes. */ | |
2603 | ||
39f77062 | 2604 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2605 | |
2606 | if (async_p) | |
2607 | { | |
23860348 | 2608 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2609 | remote_async_terminal_ours_p = 1; |
2610 | ||
2611 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2612 | assumed that the target is already ready and able to respond to | |
2613 | requests. Unfortunately remote_start_remote() eventually calls | |
2614 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2615 | around this. Eventually a mechanism that allows | |
2616 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2617 | implemented. */ |
92d1e331 DJ |
2618 | wait_forever_enabled_p = 0; |
2619 | } | |
2620 | ||
23860348 | 2621 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2622 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2623 | |
36918e70 | 2624 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2625 | target (we'd otherwise be in an inconsistent state) and then |
2626 | propogate the error on up the exception chain. This ensures that | |
2627 | the caller doesn't stumble along blindly assuming that the | |
2628 | function succeeded. The CLI doesn't have this problem but other | |
2629 | UI's, such as MI do. | |
36918e70 AC |
2630 | |
2631 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2632 | this function should return an error indication letting the | |
ce2826aa | 2633 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2634 | ``target remote'' is directly wired to this function making that |
2635 | impossible. On a positive note, the CLI side of this problem has | |
2636 | been fixed - the function set_cmd_context() makes it possible for | |
2637 | all the ``target ....'' commands to share a common callback | |
2638 | function. See cli-dump.c. */ | |
109c3e39 AC |
2639 | { |
2640 | struct gdb_exception ex | |
8621d6a9 DJ |
2641 | = catch_exception (uiout, remote_start_remote, &from_tty, |
2642 | RETURN_MASK_ALL); | |
109c3e39 AC |
2643 | if (ex.reason < 0) |
2644 | { | |
2645 | pop_target (); | |
2646 | if (async_p) | |
2647 | wait_forever_enabled_p = 1; | |
2648 | throw_exception (ex); | |
2649 | } | |
2650 | } | |
c906108c | 2651 | |
92d1e331 DJ |
2652 | if (async_p) |
2653 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2654 | |
2655 | if (extended_p) | |
43ff13b4 | 2656 | { |
6240bebf | 2657 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2658 | putpkt ("!"); |
6d820c5c | 2659 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2660 | } |
a77053c2 | 2661 | |
23860348 | 2662 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2663 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2664 | } |
2665 | ||
c906108c SS |
2666 | /* This takes a program previously attached to and detaches it. After |
2667 | this is done, GDB can be used to debug some other program. We | |
2668 | better not have left any breakpoints in the target program or it'll | |
2669 | die when it hits one. */ | |
2670 | ||
2671 | static void | |
fba45db2 | 2672 | remote_detach (char *args, int from_tty) |
c906108c | 2673 | { |
d01949b6 | 2674 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2675 | |
2676 | if (args) | |
8a3fe4f8 | 2677 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2678 | |
2679 | /* Tell the remote target to detach. */ | |
6d820c5c | 2680 | strcpy (rs->buf, "D"); |
4ddda9b5 PA |
2681 | putpkt (rs->buf); |
2682 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2683 | ||
2684 | if (rs->buf[0] == 'E') | |
2685 | error (_("Can't detach process.")); | |
c906108c | 2686 | |
23860348 | 2687 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2688 | if (target_is_async_p ()) |
2689 | serial_async (remote_desc, NULL, 0); | |
2690 | ||
cca728d0 | 2691 | target_mourn_inferior (); |
c906108c SS |
2692 | if (from_tty) |
2693 | puts_filtered ("Ending remote debugging.\n"); | |
2694 | } | |
2695 | ||
6ad8ae5c DJ |
2696 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2697 | ||
43ff13b4 | 2698 | static void |
597320e7 | 2699 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2700 | { |
43ff13b4 | 2701 | if (args) |
8a3fe4f8 | 2702 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2703 | |
23860348 | 2704 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2705 | if (target_is_async_p ()) |
2cd58942 | 2706 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2707 | |
cca728d0 | 2708 | target_mourn_inferior (); |
43ff13b4 JM |
2709 | if (from_tty) |
2710 | puts_filtered ("Ending remote debugging.\n"); | |
2711 | } | |
2712 | ||
c906108c SS |
2713 | /* Convert hex digit A to a number. */ |
2714 | ||
30559e10 | 2715 | static int |
fba45db2 | 2716 | fromhex (int a) |
c906108c SS |
2717 | { |
2718 | if (a >= '0' && a <= '9') | |
2719 | return a - '0'; | |
2720 | else if (a >= 'a' && a <= 'f') | |
2721 | return a - 'a' + 10; | |
2722 | else if (a >= 'A' && a <= 'F') | |
2723 | return a - 'A' + 10; | |
c5aa993b | 2724 | else |
8a3fe4f8 | 2725 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2726 | } |
2727 | ||
30559e10 | 2728 | static int |
cfd77fa1 | 2729 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2730 | { |
2731 | int i; | |
2732 | ||
30559e10 MS |
2733 | for (i = 0; i < count; i++) |
2734 | { | |
2735 | if (hex[0] == 0 || hex[1] == 0) | |
2736 | { | |
2737 | /* Hex string is short, or of uneven length. | |
23860348 | 2738 | Return the count that has been converted so far. */ |
30559e10 MS |
2739 | return i; |
2740 | } | |
2741 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2742 | hex += 2; | |
2743 | } | |
2744 | return i; | |
2745 | } | |
2746 | ||
c906108c SS |
2747 | /* Convert number NIB to a hex digit. */ |
2748 | ||
2749 | static int | |
fba45db2 | 2750 | tohex (int nib) |
c906108c SS |
2751 | { |
2752 | if (nib < 10) | |
c5aa993b | 2753 | return '0' + nib; |
c906108c | 2754 | else |
c5aa993b | 2755 | return 'a' + nib - 10; |
c906108c | 2756 | } |
30559e10 MS |
2757 | |
2758 | static int | |
cfd77fa1 | 2759 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2760 | { |
2761 | int i; | |
23860348 | 2762 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2763 | if (count == 0) |
cfd77fa1 | 2764 | count = strlen ((char *) bin); |
30559e10 MS |
2765 | |
2766 | for (i = 0; i < count; i++) | |
2767 | { | |
2768 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2769 | *hex++ = tohex (*bin++ & 0xf); | |
2770 | } | |
2771 | *hex = 0; | |
2772 | return i; | |
2773 | } | |
c906108c | 2774 | \f |
506fb367 DJ |
2775 | /* Check for the availability of vCont. This function should also check |
2776 | the response. */ | |
c906108c SS |
2777 | |
2778 | static void | |
6d820c5c | 2779 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2780 | { |
2e9f7625 | 2781 | char *buf; |
6d820c5c | 2782 | |
2e9f7625 DJ |
2783 | strcpy (rs->buf, "vCont?"); |
2784 | putpkt (rs->buf); | |
6d820c5c | 2785 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2786 | buf = rs->buf; |
c906108c | 2787 | |
506fb367 DJ |
2788 | /* Make sure that the features we assume are supported. */ |
2789 | if (strncmp (buf, "vCont", 5) == 0) | |
2790 | { | |
2791 | char *p = &buf[5]; | |
2792 | int support_s, support_S, support_c, support_C; | |
2793 | ||
2794 | support_s = 0; | |
2795 | support_S = 0; | |
2796 | support_c = 0; | |
2797 | support_C = 0; | |
2798 | while (p && *p == ';') | |
2799 | { | |
2800 | p++; | |
2801 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2802 | support_s = 1; | |
2803 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2804 | support_S = 1; | |
2805 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2806 | support_c = 1; | |
2807 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2808 | support_C = 1; | |
2809 | ||
2810 | p = strchr (p, ';'); | |
2811 | } | |
c906108c | 2812 | |
506fb367 DJ |
2813 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2814 | BUF will make packet_ok disable the packet. */ | |
2815 | if (!support_s || !support_S || !support_c || !support_C) | |
2816 | buf[0] = 0; | |
2817 | } | |
c906108c | 2818 | |
444abaca | 2819 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2820 | } |
c906108c | 2821 | |
506fb367 DJ |
2822 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2823 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2824 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2825 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2826 | signalled is given in the global INFERIOR_PTID. This function returns | |
2827 | non-zero iff it resumes the inferior. | |
44eaed12 | 2828 | |
506fb367 DJ |
2829 | This function issues a strict subset of all possible vCont commands at the |
2830 | moment. */ | |
44eaed12 | 2831 | |
506fb367 DJ |
2832 | static int |
2833 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2834 | { | |
2835 | struct remote_state *rs = get_remote_state (); | |
2836 | int pid = PIDGET (ptid); | |
2963ee1d | 2837 | char *buf = NULL, *outbuf; |
506fb367 | 2838 | struct cleanup *old_cleanup; |
44eaed12 | 2839 | |
444abaca | 2840 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2841 | remote_vcont_probe (rs); |
44eaed12 | 2842 | |
444abaca | 2843 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2844 | return 0; |
44eaed12 | 2845 | |
506fb367 DJ |
2846 | /* If we could generate a wider range of packets, we'd have to worry |
2847 | about overflowing BUF. Should there be a generic | |
2848 | "multi-part-packet" packet? */ | |
2849 | ||
2850 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2851 | { |
506fb367 DJ |
2852 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2853 | don't have any PID numbers the inferior will understand. Make sure | |
2854 | to only send forms that do not specify a PID. */ | |
2855 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2856 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2857 | else if (step) |
2963ee1d | 2858 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2859 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2860 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2861 | else |
2963ee1d | 2862 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2863 | } |
2864 | else if (pid == -1) | |
2865 | { | |
2866 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2867 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2868 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2869 | PIDGET (inferior_ptid)); | |
506fb367 | 2870 | else if (step) |
2963ee1d | 2871 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2872 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2873 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2874 | PIDGET (inferior_ptid)); | |
506fb367 | 2875 | else |
2963ee1d | 2876 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2877 | } |
2878 | else | |
506fb367 DJ |
2879 | { |
2880 | /* Scheduler locking; resume only PTID. */ | |
2881 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2882 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2883 | else if (step) |
2963ee1d | 2884 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2885 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2886 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2887 | else |
2963ee1d | 2888 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2889 | } |
c906108c | 2890 | |
ea9c271d | 2891 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2892 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2893 | |
2894 | putpkt (outbuf); | |
506fb367 DJ |
2895 | |
2896 | do_cleanups (old_cleanup); | |
2897 | ||
2898 | return 1; | |
c906108c | 2899 | } |
43ff13b4 | 2900 | |
506fb367 DJ |
2901 | /* Tell the remote machine to resume. */ |
2902 | ||
2903 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2904 | ||
2905 | static int last_sent_step; | |
2906 | ||
43ff13b4 | 2907 | static void |
506fb367 | 2908 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2909 | { |
d01949b6 | 2910 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2911 | char *buf; |
39f77062 | 2912 | int pid = PIDGET (ptid); |
43ff13b4 | 2913 | |
43ff13b4 JM |
2914 | last_sent_signal = siggnal; |
2915 | last_sent_step = step; | |
2916 | ||
2917 | /* A hook for when we need to do something at the last moment before | |
2918 | resumption. */ | |
9a4105ab AC |
2919 | if (deprecated_target_resume_hook) |
2920 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2921 | |
89be2091 DJ |
2922 | /* Update the inferior on signals to silently pass, if they've changed. */ |
2923 | remote_pass_signals (); | |
2924 | ||
506fb367 DJ |
2925 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2926 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2927 | return; | |
2928 | ||
2929 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2930 | if (pid == -1) | |
23860348 | 2931 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2932 | else |
23860348 | 2933 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2934 | |
2e9f7625 | 2935 | buf = rs->buf; |
43ff13b4 JM |
2936 | if (siggnal != TARGET_SIGNAL_0) |
2937 | { | |
2938 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2939 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2940 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2941 | buf[3] = '\0'; |
2942 | } | |
2943 | else | |
c5aa993b | 2944 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2945 | |
44eaed12 | 2946 | putpkt (buf); |
506fb367 DJ |
2947 | } |
2948 | ||
23860348 | 2949 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2950 | static void |
2951 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2952 | { | |
2953 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2954 | |
2acceee2 JM |
2955 | /* We are about to start executing the inferior, let's register it |
2956 | with the event loop. NOTE: this is the one place where all the | |
2957 | execution commands end up. We could alternatively do this in each | |
23860348 | 2958 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2959 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2960 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2961 | NOT asynchronously. */ |
362646f5 | 2962 | if (target_can_async_p ()) |
2acceee2 | 2963 | target_async (inferior_event_handler, 0); |
23860348 | 2964 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2965 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2966 | this? Instead, should the client of target just assume (for | |
2967 | async targets) that the target is going to start executing? Is | |
2968 | this information already found in the continuation block? */ | |
ed9a39eb | 2969 | if (target_is_async_p ()) |
2acceee2 | 2970 | target_executing = 1; |
43ff13b4 | 2971 | } |
c906108c | 2972 | \f |
43ff13b4 JM |
2973 | |
2974 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2975 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2976 | static void |
fba45db2 | 2977 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2978 | { |
c5aa993b | 2979 | sigint_remote_token = |
43ff13b4 JM |
2980 | create_async_signal_handler (async_remote_interrupt, NULL); |
2981 | signal (SIGINT, handle_remote_sigint); | |
2982 | } | |
2983 | ||
23860348 | 2984 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2985 | static void |
fba45db2 | 2986 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2987 | { |
2988 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2989 | sigint_remote_twice_token = |
43ff13b4 JM |
2990 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2991 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2992 | } | |
2993 | ||
2994 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2995 | sent once. It will take effect the second time that the user sends | |
23860348 | 2996 | a ^C. */ |
43ff13b4 | 2997 | static void |
fba45db2 | 2998 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2999 | { |
3000 | signal (sig, handle_sigint); | |
c5aa993b | 3001 | sigint_remote_twice_token = |
2df3850c | 3002 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
3003 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
3004 | } | |
3005 | ||
6426a772 | 3006 | /* Perform the real interruption of the target execution, in response |
23860348 | 3007 | to a ^C. */ |
c5aa993b | 3008 | static void |
fba45db2 | 3009 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
3010 | { |
3011 | if (remote_debug) | |
3012 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
3013 | ||
3014 | target_stop (); | |
3015 | } | |
3016 | ||
3017 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 3018 | up on the target alltogether. */ |
2df3850c | 3019 | void |
fba45db2 | 3020 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 3021 | { |
2df3850c JM |
3022 | if (remote_debug) |
3023 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 3024 | /* Do something only if the target was not killed by the previous |
23860348 | 3025 | cntl-C. */ |
6426a772 JM |
3026 | if (target_executing) |
3027 | { | |
3028 | interrupt_query (); | |
3029 | signal (SIGINT, handle_remote_sigint); | |
3030 | } | |
43ff13b4 JM |
3031 | } |
3032 | ||
3033 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 3034 | stopped. */ |
6426a772 JM |
3035 | static void |
3036 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
3037 | { |
3038 | signal (SIGINT, handle_sigint); | |
3039 | if (sigint_remote_twice_token) | |
d5d6fca5 | 3040 | delete_async_signal_handler (&sigint_remote_twice_token); |
43ff13b4 | 3041 | if (sigint_remote_token) |
d5d6fca5 | 3042 | delete_async_signal_handler (&sigint_remote_token); |
43ff13b4 JM |
3043 | } |
3044 | ||
c906108c SS |
3045 | /* Send ^C to target to halt it. Target will respond, and send us a |
3046 | packet. */ | |
507f3c78 | 3047 | static void (*ofunc) (int); |
c906108c | 3048 | |
7a292a7a SS |
3049 | /* The command line interface's stop routine. This function is installed |
3050 | as a signal handler for SIGINT. The first time a user requests a | |
3051 | stop, we call remote_stop to send a break or ^C. If there is no | |
3052 | response from the target (it didn't stop when the user requested it), | |
23860348 | 3053 | we ask the user if he'd like to detach from the target. */ |
c906108c | 3054 | static void |
fba45db2 | 3055 | remote_interrupt (int signo) |
c906108c | 3056 | { |
23860348 | 3057 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
3058 | signal (signo, remote_interrupt_twice); |
3059 | ||
3060 | if (remote_debug) | |
0f71a2f6 | 3061 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
3062 | |
3063 | target_stop (); | |
3064 | } | |
3065 | ||
3066 | /* The user typed ^C twice. */ | |
3067 | ||
3068 | static void | |
fba45db2 | 3069 | remote_interrupt_twice (int signo) |
7a292a7a SS |
3070 | { |
3071 | signal (signo, ofunc); | |
3072 | interrupt_query (); | |
c906108c SS |
3073 | signal (signo, remote_interrupt); |
3074 | } | |
7a292a7a SS |
3075 | |
3076 | /* This is the generic stop called via the target vector. When a target | |
3077 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 3078 | will eventually end up here. */ |
c906108c | 3079 | static void |
fba45db2 | 3080 | remote_stop (void) |
c906108c | 3081 | { |
7a292a7a SS |
3082 | /* Send a break or a ^C, depending on user preference. */ |
3083 | if (remote_debug) | |
0f71a2f6 | 3084 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 3085 | |
7a292a7a | 3086 | if (remote_break) |
2cd58942 | 3087 | serial_send_break (remote_desc); |
c906108c | 3088 | else |
2cd58942 | 3089 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
3090 | } |
3091 | ||
3092 | /* Ask the user what to do when an interrupt is received. */ | |
3093 | ||
3094 | static void | |
fba45db2 | 3095 | interrupt_query (void) |
c906108c SS |
3096 | { |
3097 | target_terminal_ours (); | |
3098 | ||
3099 | if (query ("Interrupted while waiting for the program.\n\ | |
3100 | Give up (and stop debugging it)? ")) | |
3101 | { | |
3102 | target_mourn_inferior (); | |
315a522e | 3103 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3104 | } |
3105 | ||
3106 | target_terminal_inferior (); | |
3107 | } | |
3108 | ||
6426a772 JM |
3109 | /* Enable/disable target terminal ownership. Most targets can use |
3110 | terminal groups to control terminal ownership. Remote targets are | |
3111 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3112 | is required. */ |
6426a772 JM |
3113 | |
3114 | static void | |
3115 | remote_async_terminal_inferior (void) | |
3116 | { | |
3117 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
3118 | sync_execution here. This function should only be called when | |
3119 | GDB is resuming the inferior in the forground. A background | |
3120 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3121 | consequently should not call this code. */ |
6426a772 JM |
3122 | if (!sync_execution) |
3123 | return; | |
3124 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3125 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3126 | to an asynchronous target with a synchronous command calls this | |
3127 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3128 | stops trying to transfer the terminal to the target when it | |
3129 | shouldn't this guard can go away. */ | |
3130 | if (!remote_async_terminal_ours_p) | |
3131 | return; | |
3132 | delete_file_handler (input_fd); | |
3133 | remote_async_terminal_ours_p = 0; | |
3134 | initialize_sigint_signal_handler (); | |
3135 | /* NOTE: At this point we could also register our selves as the | |
3136 | recipient of all input. Any characters typed could then be | |
23860348 | 3137 | passed on down to the target. */ |
6426a772 JM |
3138 | } |
3139 | ||
3140 | static void | |
3141 | remote_async_terminal_ours (void) | |
3142 | { | |
23860348 | 3143 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3144 | if (!sync_execution) |
3145 | return; | |
23860348 | 3146 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3147 | if (remote_async_terminal_ours_p) |
3148 | return; | |
3149 | cleanup_sigint_signal_handler (NULL); | |
3150 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3151 | remote_async_terminal_ours_p = 1; | |
3152 | } | |
3153 | ||
c906108c SS |
3154 | /* If nonzero, ignore the next kill. */ |
3155 | ||
3156 | int kill_kludge; | |
3157 | ||
3158 | void | |
917317f4 | 3159 | remote_console_output (char *msg) |
c906108c SS |
3160 | { |
3161 | char *p; | |
3162 | ||
c5aa993b | 3163 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3164 | { |
3165 | char tb[2]; | |
3166 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3167 | tb[0] = c; | |
3168 | tb[1] = 0; | |
43ff13b4 | 3169 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3170 | } |
917317f4 | 3171 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3172 | } |
3173 | ||
0f71a2f6 JM |
3174 | /* Wait until the remote machine stops, then return, |
3175 | storing status in STATUS just as `wait' would. | |
802188a7 | 3176 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 3177 | remote OS, is the thread-id. */ |
c906108c | 3178 | |
39f77062 KB |
3179 | static ptid_t |
3180 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3181 | { |
d01949b6 | 3182 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3183 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3184 | ULONGEST thread_num = -1; |
3c3bea1c | 3185 | ULONGEST addr; |
c906108c SS |
3186 | |
3187 | status->kind = TARGET_WAITKIND_EXITED; | |
3188 | status->value.integer = 0; | |
3189 | ||
3190 | while (1) | |
3191 | { | |
2e9f7625 | 3192 | char *buf, *p; |
c906108c | 3193 | |
c906108c | 3194 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 3195 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
3196 | signal (SIGINT, ofunc); |
3197 | ||
2e9f7625 DJ |
3198 | buf = rs->buf; |
3199 | ||
c906108c | 3200 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3201 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3202 | if (deprecated_target_wait_loop_hook) |
3203 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 3204 | |
3c3bea1c GS |
3205 | remote_stopped_by_watchpoint_p = 0; |
3206 | ||
c906108c SS |
3207 | switch (buf[0]) |
3208 | { | |
23860348 | 3209 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3210 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 3211 | continue; |
23860348 | 3212 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3213 | remote_fileio_request (buf); |
3214 | continue; | |
23860348 | 3215 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 3216 | { |
cfd77fa1 | 3217 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 3218 | |
23860348 | 3219 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 3220 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3221 | ss = signal number |
3222 | n... = register number | |
3223 | r... = register contents | |
3224 | */ | |
c906108c SS |
3225 | p = &buf[3]; /* after Txx */ |
3226 | ||
3227 | while (*p) | |
3228 | { | |
cfd77fa1 | 3229 | char *p1; |
c906108c | 3230 | char *p_temp; |
97345198 | 3231 | int fieldsize; |
3c3bea1c GS |
3232 | LONGEST pnum = 0; |
3233 | ||
23860348 MS |
3234 | /* If the packet contains a register number save it in |
3235 | pnum and set p1 to point to the character following | |
3236 | it. Otherwise p1 points to p. */ | |
c906108c | 3237 | |
23860348 MS |
3238 | /* If this packet is an awatch packet, don't parse the |
3239 | 'a' as a register number. */ | |
3c3bea1c GS |
3240 | |
3241 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3242 | { | |
3243 | /* Read the ``P'' register number. */ | |
3244 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3245 | p1 = p_temp; |
3c3bea1c | 3246 | } |
802188a7 | 3247 | else |
3c3bea1c | 3248 | p1 = p; |
c906108c | 3249 | |
23860348 | 3250 | if (p1 == p) /* No register number present here. */ |
c906108c | 3251 | { |
cfd77fa1 | 3252 | p1 = strchr (p, ':'); |
c906108c | 3253 | if (p1 == NULL) |
670aa98f | 3254 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3255 | Packet: '%s'\n"), |
670aa98f | 3256 | p, buf); |
3c3bea1c | 3257 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3258 | { |
3259 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3260 | record_currthread (thread_num); | |
cfd77fa1 | 3261 | p = p_temp; |
c906108c | 3262 | } |
3c3bea1c GS |
3263 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3264 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3265 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3266 | { | |
3267 | remote_stopped_by_watchpoint_p = 1; | |
3268 | p = unpack_varlen_hex (++p1, &addr); | |
3269 | remote_watch_data_address = (CORE_ADDR)addr; | |
3270 | } | |
3271 | else | |
3272 | { | |
3273 | /* Silently skip unknown optional info. */ | |
3274 | p_temp = strchr (p1 + 1, ';'); | |
3275 | if (p_temp) | |
cfd77fa1 | 3276 | p = p_temp; |
3c3bea1c | 3277 | } |
c906108c SS |
3278 | } |
3279 | else | |
3280 | { | |
ea9c271d | 3281 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3282 | p = p1; |
3283 | ||
3284 | if (*p++ != ':') | |
8a3fe4f8 AC |
3285 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3286 | Packet: '%s'\n"), | |
3fcb8548 | 3287 | p, buf); |
c906108c | 3288 | |
ad10f812 | 3289 | if (reg == NULL) |
8a3fe4f8 AC |
3290 | error (_("Remote sent bad register number %s: %s\n\ |
3291 | Packet: '%s'\n"), | |
3fcb8548 | 3292 | phex_nz (pnum, 0), p, buf); |
c906108c | 3293 | |
cfd77fa1 | 3294 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3295 | register_size (current_gdbarch, |
23860348 | 3296 | reg->regnum)); |
97345198 | 3297 | p += 2 * fieldsize; |
2bc416ba | 3298 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3299 | reg->regnum)) |
8a3fe4f8 | 3300 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 | 3301 | regcache_raw_supply (get_current_regcache (), |
23860348 | 3302 | reg->regnum, regs); |
c906108c SS |
3303 | } |
3304 | ||
3305 | if (*p++ != ';') | |
2bc416ba | 3306 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3307 | buf, p); |
c906108c SS |
3308 | } |
3309 | } | |
3310 | /* fall through */ | |
23860348 | 3311 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
3312 | status->kind = TARGET_WAITKIND_STOPPED; |
3313 | status->value.sig = (enum target_signal) | |
3314 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3315 | ||
0f71a2f6 JM |
3316 | if (buf[3] == 'p') |
3317 | { | |
0f71a2f6 JM |
3318 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3319 | record_currthread (thread_num); | |
3320 | } | |
c906108c | 3321 | goto got_status; |
23860348 | 3322 | case 'W': /* Target exited. */ |
c906108c SS |
3323 | { |
3324 | /* The remote process exited. */ | |
3325 | status->kind = TARGET_WAITKIND_EXITED; | |
3326 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3327 | goto got_status; | |
3328 | } | |
3329 | case 'X': | |
3330 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3331 | status->value.sig = (enum target_signal) | |
3332 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3333 | kill_kludge = 1; | |
3334 | ||
3335 | goto got_status; | |
23860348 | 3336 | case 'O': /* Console output. */ |
c906108c SS |
3337 | remote_console_output (buf + 1); |
3338 | continue; | |
3339 | case '\0': | |
3340 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3341 | { | |
3342 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3343 | the remote system doesn't support it. */ |
c906108c SS |
3344 | target_terminal_ours_for_output (); |
3345 | printf_filtered | |
3346 | ("Can't send signals to this remote system. %s not sent.\n", | |
3347 | target_signal_to_name (last_sent_signal)); | |
3348 | last_sent_signal = TARGET_SIGNAL_0; | |
3349 | target_terminal_inferior (); | |
3350 | ||
3351 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3352 | putpkt ((char *) buf); | |
3353 | continue; | |
3354 | } | |
3355 | /* else fallthrough */ | |
3356 | default: | |
8a3fe4f8 | 3357 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3358 | continue; |
3359 | } | |
3360 | } | |
c5aa993b | 3361 | got_status: |
c906108c SS |
3362 | if (thread_num != -1) |
3363 | { | |
39f77062 | 3364 | return pid_to_ptid (thread_num); |
c906108c | 3365 | } |
39f77062 | 3366 | return inferior_ptid; |
c906108c SS |
3367 | } |
3368 | ||
23860348 | 3369 | /* Async version of remote_wait. */ |
39f77062 KB |
3370 | static ptid_t |
3371 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3372 | { |
d01949b6 | 3373 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3374 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3375 | ULONGEST thread_num = -1; |
3c3bea1c | 3376 | ULONGEST addr; |
43ff13b4 JM |
3377 | |
3378 | status->kind = TARGET_WAITKIND_EXITED; | |
3379 | status->value.integer = 0; | |
3380 | ||
3c3bea1c GS |
3381 | remote_stopped_by_watchpoint_p = 0; |
3382 | ||
43ff13b4 JM |
3383 | while (1) |
3384 | { | |
2e9f7625 | 3385 | char *buf, *p; |
c5aa993b | 3386 | |
ed9a39eb | 3387 | if (!target_is_async_p ()) |
43ff13b4 | 3388 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3389 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3390 | _never_ wait for ever -> test on target_is_async_p(). | |
3391 | However, before we do that we need to ensure that the caller | |
23860348 | 3392 | knows how to take the target into/out of async mode. */ |
6d820c5c | 3393 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 3394 | if (!target_is_async_p ()) |
43ff13b4 JM |
3395 | signal (SIGINT, ofunc); |
3396 | ||
2e9f7625 DJ |
3397 | buf = rs->buf; |
3398 | ||
43ff13b4 | 3399 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3400 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3401 | if (deprecated_target_wait_loop_hook) |
3402 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3403 | |
3404 | switch (buf[0]) | |
3405 | { | |
23860348 | 3406 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3407 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3408 | continue; |
23860348 | 3409 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3410 | remote_fileio_request (buf); |
3411 | continue; | |
23860348 | 3412 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3413 | { |
cfd77fa1 | 3414 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3415 | |
23860348 | 3416 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3417 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3418 | ss = signal number |
3419 | n... = register number | |
3420 | r... = register contents | |
3421 | */ | |
43ff13b4 JM |
3422 | p = &buf[3]; /* after Txx */ |
3423 | ||
3424 | while (*p) | |
3425 | { | |
cfd77fa1 | 3426 | char *p1; |
43ff13b4 | 3427 | char *p_temp; |
6c3f2dbf | 3428 | int fieldsize; |
3c3bea1c | 3429 | long pnum = 0; |
43ff13b4 | 3430 | |
23860348 MS |
3431 | /* If the packet contains a register number, save it |
3432 | in pnum and set p1 to point to the character | |
3433 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3434 | |
3435 | /* If this packet is an awatch packet, don't parse the 'a' | |
3436 | as a register number. */ | |
802188a7 | 3437 | |
3c3bea1c GS |
3438 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3439 | { | |
3440 | /* Read the register number. */ | |
3441 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3442 | p1 = p_temp; |
3c3bea1c | 3443 | } |
802188a7 | 3444 | else |
3c3bea1c | 3445 | p1 = p; |
43ff13b4 | 3446 | |
23860348 | 3447 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3448 | { |
cfd77fa1 | 3449 | p1 = strchr (p, ':'); |
43ff13b4 | 3450 | if (p1 == NULL) |
8a3fe4f8 AC |
3451 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3452 | Packet: '%s'\n"), | |
3fcb8548 | 3453 | p, buf); |
3c3bea1c | 3454 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3455 | { |
3456 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3457 | record_currthread (thread_num); | |
cfd77fa1 | 3458 | p = p_temp; |
43ff13b4 | 3459 | } |
3c3bea1c GS |
3460 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3461 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3462 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3463 | { | |
3464 | remote_stopped_by_watchpoint_p = 1; | |
3465 | p = unpack_varlen_hex (++p1, &addr); | |
3466 | remote_watch_data_address = (CORE_ADDR)addr; | |
3467 | } | |
3468 | else | |
3469 | { | |
3470 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3471 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3472 | if (p_temp) |
3473 | p = p_temp; | |
3474 | } | |
43ff13b4 | 3475 | } |
802188a7 | 3476 | |
43ff13b4 JM |
3477 | else |
3478 | { | |
ea9c271d | 3479 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3480 | p = p1; |
43ff13b4 | 3481 | if (*p++ != ':') |
8a3fe4f8 AC |
3482 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3483 | Packet: '%s'\n"), | |
3fcb8548 | 3484 | p, buf); |
43ff13b4 | 3485 | |
ad10f812 | 3486 | if (reg == NULL) |
8a3fe4f8 AC |
3487 | error (_("Remote sent bad register number %ld: %s\n\ |
3488 | Packet: '%s'\n"), | |
3fcb8548 | 3489 | pnum, p, buf); |
43ff13b4 | 3490 | |
cfd77fa1 | 3491 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3492 | register_size (current_gdbarch, |
23860348 | 3493 | reg->regnum)); |
6c3f2dbf | 3494 | p += 2 * fieldsize; |
2bc416ba | 3495 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3496 | reg->regnum)) |
8a3fe4f8 | 3497 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 UW |
3498 | regcache_raw_supply (get_current_regcache (), |
3499 | reg->regnum, regs); | |
43ff13b4 JM |
3500 | } |
3501 | ||
3502 | if (*p++ != ';') | |
8a3fe4f8 | 3503 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3504 | buf, p); |
43ff13b4 JM |
3505 | } |
3506 | } | |
3507 | /* fall through */ | |
23860348 | 3508 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3509 | status->kind = TARGET_WAITKIND_STOPPED; |
3510 | status->value.sig = (enum target_signal) | |
3511 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3512 | ||
3513 | if (buf[3] == 'p') | |
3514 | { | |
43ff13b4 JM |
3515 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3516 | record_currthread (thread_num); | |
3517 | } | |
43ff13b4 | 3518 | goto got_status; |
23860348 | 3519 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3520 | { |
3521 | /* The remote process exited. */ | |
3522 | status->kind = TARGET_WAITKIND_EXITED; | |
3523 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3524 | goto got_status; | |
3525 | } | |
3526 | case 'X': | |
3527 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3528 | status->value.sig = (enum target_signal) | |
3529 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3530 | kill_kludge = 1; | |
3531 | ||
3532 | goto got_status; | |
23860348 | 3533 | case 'O': /* Console output. */ |
43ff13b4 | 3534 | remote_console_output (buf + 1); |
c4093a6a | 3535 | /* Return immediately to the event loop. The event loop will |
23860348 | 3536 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3537 | status->kind = TARGET_WAITKIND_IGNORE; |
3538 | goto got_status; | |
43ff13b4 JM |
3539 | case '\0': |
3540 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3541 | { | |
3542 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3543 | the remote system doesn't support it. */ |
43ff13b4 JM |
3544 | target_terminal_ours_for_output (); |
3545 | printf_filtered | |
3546 | ("Can't send signals to this remote system. %s not sent.\n", | |
3547 | target_signal_to_name (last_sent_signal)); | |
3548 | last_sent_signal = TARGET_SIGNAL_0; | |
3549 | target_terminal_inferior (); | |
3550 | ||
3551 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3552 | putpkt ((char *) buf); | |
3553 | continue; | |
3554 | } | |
3555 | /* else fallthrough */ | |
3556 | default: | |
8a3fe4f8 | 3557 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3558 | continue; |
3559 | } | |
3560 | } | |
c5aa993b | 3561 | got_status: |
43ff13b4 JM |
3562 | if (thread_num != -1) |
3563 | { | |
39f77062 | 3564 | return pid_to_ptid (thread_num); |
43ff13b4 | 3565 | } |
39f77062 | 3566 | return inferior_ptid; |
43ff13b4 JM |
3567 | } |
3568 | ||
74ca34ce | 3569 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3570 | |
b96ec7ac | 3571 | static int |
56be3814 | 3572 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
3573 | { |
3574 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3575 | char *buf, *p; |
b96ec7ac AC |
3576 | char regp[MAX_REGISTER_SIZE]; |
3577 | int i; | |
3578 | ||
74ca34ce DJ |
3579 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3580 | return 0; | |
3581 | ||
3582 | if (reg->pnum == -1) | |
3583 | return 0; | |
3584 | ||
2e9f7625 | 3585 | p = rs->buf; |
fcad0fa4 | 3586 | *p++ = 'p'; |
74ca34ce | 3587 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 3588 | *p++ = '\0'; |
6d820c5c | 3589 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3590 | |
2e9f7625 DJ |
3591 | buf = rs->buf; |
3592 | ||
74ca34ce DJ |
3593 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
3594 | { | |
3595 | case PACKET_OK: | |
3596 | break; | |
3597 | case PACKET_UNKNOWN: | |
3598 | return 0; | |
3599 | case PACKET_ERROR: | |
3600 | error (_("Could not fetch register \"%s\""), | |
3601 | gdbarch_register_name (current_gdbarch, reg->regnum)); | |
3602 | } | |
3f9a994c JB |
3603 | |
3604 | /* If this register is unfetchable, tell the regcache. */ | |
3605 | if (buf[0] == 'x') | |
8480adf2 | 3606 | { |
56be3814 | 3607 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 3608 | return 1; |
b96ec7ac | 3609 | } |
b96ec7ac | 3610 | |
3f9a994c JB |
3611 | /* Otherwise, parse and supply the value. */ |
3612 | p = buf; | |
3613 | i = 0; | |
3614 | while (p[0] != 0) | |
3615 | { | |
3616 | if (p[1] == 0) | |
74ca34ce | 3617 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3618 | |
3619 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3620 | p += 2; | |
3621 | } | |
56be3814 | 3622 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 3623 | return 1; |
b96ec7ac AC |
3624 | } |
3625 | ||
74ca34ce DJ |
3626 | /* Fetch the registers included in the target's 'g' packet. */ |
3627 | ||
29709017 DJ |
3628 | static int |
3629 | send_g_packet (void) | |
c906108c | 3630 | { |
d01949b6 | 3631 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 3632 | int i, buf_len; |
c906108c | 3633 | char *p; |
74ca34ce | 3634 | char *regs; |
c906108c | 3635 | |
74ca34ce DJ |
3636 | sprintf (rs->buf, "g"); |
3637 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 3638 | |
29709017 DJ |
3639 | /* We can get out of synch in various cases. If the first character |
3640 | in the buffer is not a hex character, assume that has happened | |
3641 | and try to fetch another packet to read. */ | |
3642 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
3643 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
3644 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
3645 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
3646 | { | |
3647 | if (remote_debug) | |
3648 | fprintf_unfiltered (gdb_stdlog, | |
3649 | "Bad register packet; fetching a new packet\n"); | |
3650 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3651 | } | |
3652 | ||
74ca34ce DJ |
3653 | buf_len = strlen (rs->buf); |
3654 | ||
3655 | /* Sanity check the received packet. */ | |
3656 | if (buf_len % 2 != 0) | |
3657 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
3658 | |
3659 | return buf_len / 2; | |
3660 | } | |
3661 | ||
3662 | static void | |
56be3814 | 3663 | process_g_packet (struct regcache *regcache) |
29709017 DJ |
3664 | { |
3665 | struct remote_state *rs = get_remote_state (); | |
3666 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3667 | int i, buf_len; | |
3668 | char *p; | |
3669 | char *regs; | |
3670 | ||
3671 | buf_len = strlen (rs->buf); | |
3672 | ||
3673 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
3674 | if (buf_len > 2 * rsa->sizeof_g_packet) |
3675 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
3676 | ||
3677 | /* Save the size of the packet sent to us by the target. It is used | |
3678 | as a heuristic when determining the max size of packets that the | |
3679 | target can safely receive. */ | |
3680 | if (rsa->actual_register_packet_size == 0) | |
3681 | rsa->actual_register_packet_size = buf_len; | |
3682 | ||
3683 | /* If this is smaller than we guessed the 'g' packet would be, | |
3684 | update our records. A 'g' reply that doesn't include a register's | |
3685 | value implies either that the register is not available, or that | |
3686 | the 'p' packet must be used. */ | |
3687 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 3688 | { |
74ca34ce DJ |
3689 | rsa->sizeof_g_packet = buf_len / 2; |
3690 | ||
f57d151a | 3691 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
b96ec7ac | 3692 | { |
74ca34ce DJ |
3693 | if (rsa->regs[i].pnum == -1) |
3694 | continue; | |
3695 | ||
3696 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
3697 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 3698 | else |
74ca34ce | 3699 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 3700 | } |
74ca34ce | 3701 | } |
b323314b | 3702 | |
74ca34ce | 3703 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
3704 | |
3705 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3706 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 3707 | |
c906108c SS |
3708 | /* Reply describes registers byte by byte, each byte encoded as two |
3709 | hex characters. Suck them all up, then supply them to the | |
3710 | register cacheing/storage mechanism. */ | |
3711 | ||
74ca34ce | 3712 | p = rs->buf; |
ea9c271d | 3713 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 3714 | { |
74ca34ce DJ |
3715 | if (p[0] == 0 || p[1] == 0) |
3716 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
3717 | internal_error (__FILE__, __LINE__, | |
3718 | "unexpected end of 'g' packet reply"); | |
3719 | ||
c906108c | 3720 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 3721 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3722 | else |
3723 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3724 | p += 2; | |
3725 | } | |
3726 | ||
ad10f812 | 3727 | { |
b323314b | 3728 | int i; |
f57d151a | 3729 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ad10f812 | 3730 | { |
ea9c271d | 3731 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3732 | if (r->in_g_packet) |
3733 | { | |
74ca34ce DJ |
3734 | if (r->offset * 2 >= strlen (rs->buf)) |
3735 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
3736 | internal_error (__FILE__, __LINE__, | |
3737 | "unexpected end of 'g' packet reply"); | |
3738 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 3739 | { |
74ca34ce | 3740 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
3741 | /* The register isn't available, mark it as such (at |
3742 | the same time setting the value to zero). */ | |
56be3814 | 3743 | regcache_raw_supply (regcache, r->regnum, NULL); |
8ccc1287 AC |
3744 | } |
3745 | else | |
56be3814 | 3746 | regcache_raw_supply (regcache, r->regnum, |
8ccc1287 | 3747 | regs + r->offset); |
b323314b | 3748 | } |
ad10f812 AC |
3749 | } |
3750 | } | |
c906108c SS |
3751 | } |
3752 | ||
29709017 | 3753 | static void |
56be3814 | 3754 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
3755 | { |
3756 | send_g_packet (); | |
56be3814 | 3757 | process_g_packet (regcache); |
29709017 DJ |
3758 | } |
3759 | ||
74ca34ce | 3760 | static void |
56be3814 | 3761 | remote_fetch_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
3762 | { |
3763 | struct remote_state *rs = get_remote_state (); | |
3764 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3765 | int i; | |
3766 | ||
3767 | set_thread (PIDGET (inferior_ptid), 1); | |
3768 | ||
3769 | if (regnum >= 0) | |
3770 | { | |
3771 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3772 | gdb_assert (reg != NULL); | |
3773 | ||
3774 | /* If this register might be in the 'g' packet, try that first - | |
3775 | we are likely to read more than one register. If this is the | |
3776 | first 'g' packet, we might be overly optimistic about its | |
3777 | contents, so fall back to 'p'. */ | |
3778 | if (reg->in_g_packet) | |
3779 | { | |
56be3814 | 3780 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
3781 | if (reg->in_g_packet) |
3782 | return; | |
3783 | } | |
3784 | ||
56be3814 | 3785 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
3786 | return; |
3787 | ||
3788 | /* This register is not available. */ | |
56be3814 | 3789 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
3790 | |
3791 | return; | |
3792 | } | |
3793 | ||
56be3814 | 3794 | fetch_registers_using_g (regcache); |
74ca34ce | 3795 | |
f57d151a | 3796 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
74ca34ce | 3797 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 3798 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
3799 | { |
3800 | /* This register is not available. */ | |
56be3814 | 3801 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
3802 | } |
3803 | } | |
3804 | ||
c906108c SS |
3805 | /* Prepare to store registers. Since we may send them all (using a |
3806 | 'G' request), we have to read out the ones we don't want to change | |
3807 | first. */ | |
3808 | ||
c5aa993b | 3809 | static void |
316f2060 | 3810 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 3811 | { |
ea9c271d | 3812 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3813 | int i; |
cfd77fa1 | 3814 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3815 | |
c906108c | 3816 | /* Make sure the entire registers array is valid. */ |
444abaca | 3817 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3818 | { |
3819 | case PACKET_DISABLE: | |
3820 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 3821 | /* Make sure all the necessary registers are cached. */ |
f57d151a | 3822 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ea9c271d | 3823 | if (rsa->regs[i].in_g_packet) |
316f2060 | 3824 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
3825 | break; |
3826 | case PACKET_ENABLE: | |
3827 | break; | |
3828 | } | |
3829 | } | |
3830 | ||
ad10f812 | 3831 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3832 | packet was not recognized. */ |
5a2468f5 JM |
3833 | |
3834 | static int | |
56be3814 | 3835 | store_register_using_P (const struct regcache *regcache, struct packet_reg *reg) |
5a2468f5 | 3836 | { |
d01949b6 | 3837 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3838 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 3839 | /* Try storing a single register. */ |
6d820c5c | 3840 | char *buf = rs->buf; |
cfd77fa1 | 3841 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3842 | char *p; |
5a2468f5 | 3843 | |
74ca34ce DJ |
3844 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
3845 | return 0; | |
3846 | ||
3847 | if (reg->pnum == -1) | |
3848 | return 0; | |
3849 | ||
ea9c271d | 3850 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3851 | p = buf + strlen (buf); |
56be3814 | 3852 | regcache_raw_collect (regcache, reg->regnum, regp); |
3acba339 | 3853 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3854 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 3855 | |
74ca34ce DJ |
3856 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
3857 | { | |
3858 | case PACKET_OK: | |
3859 | return 1; | |
3860 | case PACKET_ERROR: | |
3861 | error (_("Could not write register \"%s\""), | |
3862 | gdbarch_register_name (current_gdbarch, reg->regnum)); | |
3863 | case PACKET_UNKNOWN: | |
3864 | return 0; | |
3865 | default: | |
3866 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
3867 | } | |
c906108c SS |
3868 | } |
3869 | ||
23860348 MS |
3870 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3871 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3872 | |
3873 | static void | |
56be3814 | 3874 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 3875 | { |
d01949b6 | 3876 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3877 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3878 | gdb_byte *regs; |
c906108c SS |
3879 | char *p; |
3880 | ||
193cb69f AC |
3881 | /* Extract all the registers in the regcache copying them into a |
3882 | local buffer. */ | |
3883 | { | |
b323314b | 3884 | int i; |
ea9c271d DJ |
3885 | regs = alloca (rsa->sizeof_g_packet); |
3886 | memset (regs, 0, rsa->sizeof_g_packet); | |
f57d151a | 3887 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
193cb69f | 3888 | { |
ea9c271d | 3889 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3890 | if (r->in_g_packet) |
56be3814 | 3891 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3892 | } |
3893 | } | |
c906108c SS |
3894 | |
3895 | /* Command describes registers byte by byte, | |
3896 | each byte encoded as two hex characters. */ | |
6d820c5c | 3897 | p = rs->buf; |
193cb69f | 3898 | *p++ = 'G'; |
74ca34ce DJ |
3899 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
3900 | updated. */ | |
3901 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 3902 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3903 | } |
74ca34ce DJ |
3904 | |
3905 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
3906 | of the register cache buffer. FIXME: ignores errors. */ | |
3907 | ||
3908 | static void | |
56be3814 | 3909 | remote_store_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
3910 | { |
3911 | struct remote_state *rs = get_remote_state (); | |
3912 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3913 | int i; | |
3914 | ||
3915 | set_thread (PIDGET (inferior_ptid), 1); | |
3916 | ||
3917 | if (regnum >= 0) | |
3918 | { | |
3919 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3920 | gdb_assert (reg != NULL); | |
3921 | ||
3922 | /* Always prefer to store registers using the 'P' packet if | |
3923 | possible; we often change only a small number of registers. | |
3924 | Sometimes we change a larger number; we'd need help from a | |
3925 | higher layer to know to use 'G'. */ | |
56be3814 | 3926 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
3927 | return; |
3928 | ||
3929 | /* For now, don't complain if we have no way to write the | |
3930 | register. GDB loses track of unavailable registers too | |
3931 | easily. Some day, this may be an error. We don't have | |
3932 | any way to read the register, either... */ | |
3933 | if (!reg->in_g_packet) | |
3934 | return; | |
3935 | ||
56be3814 | 3936 | store_registers_using_G (regcache); |
74ca34ce DJ |
3937 | return; |
3938 | } | |
3939 | ||
56be3814 | 3940 | store_registers_using_G (regcache); |
74ca34ce | 3941 | |
f57d151a | 3942 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
74ca34ce | 3943 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 3944 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
3945 | /* See above for why we do not issue an error here. */ |
3946 | continue; | |
3947 | } | |
c906108c SS |
3948 | \f |
3949 | ||
3950 | /* Return the number of hex digits in num. */ | |
3951 | ||
3952 | static int | |
fba45db2 | 3953 | hexnumlen (ULONGEST num) |
c906108c SS |
3954 | { |
3955 | int i; | |
3956 | ||
3957 | for (i = 0; num != 0; i++) | |
3958 | num >>= 4; | |
3959 | ||
3960 | return max (i, 1); | |
3961 | } | |
3962 | ||
2df3850c | 3963 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3964 | |
3965 | static int | |
fba45db2 | 3966 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3967 | { |
c906108c | 3968 | int len = hexnumlen (num); |
2df3850c JM |
3969 | return hexnumnstr (buf, num, len); |
3970 | } | |
3971 | ||
c906108c | 3972 | |
2df3850c | 3973 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3974 | |
2df3850c | 3975 | static int |
fba45db2 | 3976 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3977 | { |
3978 | int i; | |
3979 | ||
3980 | buf[width] = '\0'; | |
3981 | ||
3982 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3983 | { |
c5aa993b | 3984 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3985 | num >>= 4; |
3986 | } | |
3987 | ||
2df3850c | 3988 | return width; |
c906108c SS |
3989 | } |
3990 | ||
23860348 | 3991 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3992 | |
3993 | static CORE_ADDR | |
fba45db2 | 3994 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3995 | { |
3996 | if (remote_address_size > 0 | |
3997 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3998 | { | |
3999 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 4000 | in a ULONGEST variable. */ |
c906108c SS |
4001 | ULONGEST mask = 1; |
4002 | mask = (mask << remote_address_size) - 1; | |
4003 | addr &= mask; | |
4004 | } | |
4005 | return addr; | |
4006 | } | |
4007 | ||
a31ea83d DJ |
4008 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
4009 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
4010 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
4011 | (which may be more than *OUT_LEN due to escape characters). The | |
4012 | total number of bytes in the output buffer will be at most | |
4013 | OUT_MAXLEN. */ | |
4014 | ||
4015 | static int | |
4016 | remote_escape_output (const gdb_byte *buffer, int len, | |
4017 | gdb_byte *out_buf, int *out_len, | |
4018 | int out_maxlen) | |
4019 | { | |
4020 | int input_index, output_index; | |
4021 | ||
4022 | output_index = 0; | |
4023 | for (input_index = 0; input_index < len; input_index++) | |
4024 | { | |
4025 | gdb_byte b = buffer[input_index]; | |
4026 | ||
4027 | if (b == '$' || b == '#' || b == '}') | |
4028 | { | |
4029 | /* These must be escaped. */ | |
4030 | if (output_index + 2 > out_maxlen) | |
4031 | break; | |
4032 | out_buf[output_index++] = '}'; | |
4033 | out_buf[output_index++] = b ^ 0x20; | |
4034 | } | |
4035 | else | |
4036 | { | |
4037 | if (output_index + 1 > out_maxlen) | |
4038 | break; | |
4039 | out_buf[output_index++] = b; | |
4040 | } | |
4041 | } | |
4042 | ||
4043 | *out_len = input_index; | |
4044 | return output_index; | |
4045 | } | |
4046 | ||
0876f84a DJ |
4047 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
4048 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
4049 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
4050 | ||
4051 | This function reverses remote_escape_output. It allows more | |
4052 | escaped characters than that function does, in particular because | |
4053 | '*' must be escaped to avoid the run-length encoding processing | |
4054 | in reading packets. */ | |
4055 | ||
4056 | static int | |
4057 | remote_unescape_input (const gdb_byte *buffer, int len, | |
4058 | gdb_byte *out_buf, int out_maxlen) | |
4059 | { | |
4060 | int input_index, output_index; | |
4061 | int escaped; | |
4062 | ||
4063 | output_index = 0; | |
4064 | escaped = 0; | |
4065 | for (input_index = 0; input_index < len; input_index++) | |
4066 | { | |
4067 | gdb_byte b = buffer[input_index]; | |
4068 | ||
4069 | if (output_index + 1 > out_maxlen) | |
4070 | { | |
4071 | warning (_("Received too much data from remote target;" | |
4072 | " ignoring overflow.")); | |
4073 | return output_index; | |
4074 | } | |
4075 | ||
4076 | if (escaped) | |
4077 | { | |
4078 | out_buf[output_index++] = b ^ 0x20; | |
4079 | escaped = 0; | |
4080 | } | |
4081 | else if (b == '}') | |
4082 | escaped = 1; | |
4083 | else | |
4084 | out_buf[output_index++] = b; | |
4085 | } | |
4086 | ||
4087 | if (escaped) | |
4088 | error (_("Unmatched escape character in target response.")); | |
4089 | ||
4090 | return output_index; | |
4091 | } | |
4092 | ||
c906108c SS |
4093 | /* Determine whether the remote target supports binary downloading. |
4094 | This is accomplished by sending a no-op memory write of zero length | |
4095 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4096 | the whole packet, since many stubs strip the eighth bit and |
4097 | subsequently compute a wrong checksum, which causes real havoc with | |
4098 | remote_write_bytes. | |
7a292a7a | 4099 | |
96baa820 JM |
4100 | NOTE: This can still lose if the serial line is not eight-bit |
4101 | clean. In cases like this, the user should clear "remote | |
23860348 | 4102 | X-packet". */ |
96baa820 | 4103 | |
c906108c | 4104 | static void |
fba45db2 | 4105 | check_binary_download (CORE_ADDR addr) |
c906108c | 4106 | { |
d01949b6 | 4107 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4108 | |
444abaca | 4109 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4110 | { |
96baa820 JM |
4111 | case PACKET_DISABLE: |
4112 | break; | |
4113 | case PACKET_ENABLE: | |
4114 | break; | |
4115 | case PACKET_SUPPORT_UNKNOWN: | |
4116 | { | |
96baa820 | 4117 | char *p; |
802188a7 | 4118 | |
2e9f7625 | 4119 | p = rs->buf; |
96baa820 JM |
4120 | *p++ = 'X'; |
4121 | p += hexnumstr (p, (ULONGEST) addr); | |
4122 | *p++ = ','; | |
4123 | p += hexnumstr (p, (ULONGEST) 0); | |
4124 | *p++ = ':'; | |
4125 | *p = '\0'; | |
802188a7 | 4126 | |
2e9f7625 | 4127 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4128 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4129 | |
2e9f7625 | 4130 | if (rs->buf[0] == '\0') |
96baa820 JM |
4131 | { |
4132 | if (remote_debug) | |
4133 | fprintf_unfiltered (gdb_stdlog, | |
4134 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4135 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4136 | } |
4137 | else | |
4138 | { | |
4139 | if (remote_debug) | |
4140 | fprintf_unfiltered (gdb_stdlog, | |
4141 | "binary downloading suppported by target\n"); | |
444abaca | 4142 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4143 | } |
4144 | break; | |
4145 | } | |
c906108c SS |
4146 | } |
4147 | } | |
4148 | ||
4149 | /* Write memory data directly to the remote machine. | |
4150 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4151 | HEADER is the starting part of the packet. |
c906108c SS |
4152 | MEMADDR is the address in the remote memory space. |
4153 | MYADDR is the address of the buffer in our space. | |
4154 | LEN is the number of bytes. | |
a76d924d DJ |
4155 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4156 | should send data as binary ('X'), or hex-encoded ('M'). | |
4157 | ||
4158 | The function creates packet of the form | |
4159 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4160 | ||
4161 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4162 | ||
4163 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4164 | are omitted. | |
4165 | ||
4166 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4167 | error. Only transfer a single packet. */ |
c906108c | 4168 | |
a76d924d DJ |
4169 | static int |
4170 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4171 | const gdb_byte *myaddr, int len, | |
4172 | char packet_format, int use_length) | |
c906108c | 4173 | { |
6d820c5c | 4174 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4175 | char *p; |
a76d924d DJ |
4176 | char *plen = NULL; |
4177 | int plenlen = 0; | |
917317f4 JM |
4178 | int todo; |
4179 | int nr_bytes; | |
a257b5bb | 4180 | int payload_size; |
6765f3e5 | 4181 | int payload_length; |
a76d924d DJ |
4182 | int header_length; |
4183 | ||
4184 | if (packet_format != 'X' && packet_format != 'M') | |
4185 | internal_error (__FILE__, __LINE__, | |
4186 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4187 | |
b2182ed2 DJ |
4188 | if (len <= 0) |
4189 | return 0; | |
4190 | ||
3de11b2e | 4191 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4192 | |
6d820c5c DJ |
4193 | /* The packet buffer will be large enough for the payload; |
4194 | get_memory_packet_size ensures this. */ | |
a76d924d | 4195 | rs->buf[0] = '\0'; |
c906108c | 4196 | |
a257b5bb | 4197 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4198 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4199 | */ | |
a76d924d DJ |
4200 | payload_size -= strlen ("$,:#NN"); |
4201 | if (!use_length) | |
4202 | /* The comma won't be used. */ | |
4203 | payload_size += 1; | |
4204 | header_length = strlen (header); | |
4205 | payload_size -= header_length; | |
3de11b2e | 4206 | payload_size -= hexnumlen (memaddr); |
c906108c | 4207 | |
a76d924d | 4208 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4209 | |
a76d924d DJ |
4210 | strcat (rs->buf, header); |
4211 | p = rs->buf + strlen (header); | |
4212 | ||
4213 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4214 | if (packet_format == 'X') | |
c906108c | 4215 | { |
23860348 | 4216 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4217 | todo = min (len, payload_size); |
a76d924d DJ |
4218 | if (use_length) |
4219 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4220 | todo = min (todo, payload_size); |
a76d924d DJ |
4221 | } |
4222 | else | |
4223 | { | |
23860348 | 4224 | /* Num bytes that will fit. */ |
a257b5bb | 4225 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4226 | if (use_length) |
4227 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4228 | todo = min (todo, payload_size / 2); |
917317f4 | 4229 | } |
a76d924d | 4230 | |
3de11b2e NS |
4231 | if (todo <= 0) |
4232 | internal_error (__FILE__, __LINE__, | |
4233 | _("minumum packet size too small to write data")); | |
802188a7 | 4234 | |
6765f3e5 DJ |
4235 | /* If we already need another packet, then try to align the end |
4236 | of this packet to a useful boundary. */ | |
4237 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4238 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4239 | ||
a257b5bb | 4240 | /* Append "<memaddr>". */ |
917317f4 JM |
4241 | memaddr = remote_address_masked (memaddr); |
4242 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4243 | |
a76d924d DJ |
4244 | if (use_length) |
4245 | { | |
4246 | /* Append ",". */ | |
4247 | *p++ = ','; | |
802188a7 | 4248 | |
a76d924d DJ |
4249 | /* Append <len>. Retain the location/size of <len>. It may need to |
4250 | be adjusted once the packet body has been created. */ | |
4251 | plen = p; | |
4252 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4253 | p += plenlen; | |
4254 | } | |
a257b5bb AC |
4255 | |
4256 | /* Append ":". */ | |
917317f4 JM |
4257 | *p++ = ':'; |
4258 | *p = '\0'; | |
802188a7 | 4259 | |
a257b5bb | 4260 | /* Append the packet body. */ |
a76d924d | 4261 | if (packet_format == 'X') |
917317f4 | 4262 | { |
917317f4 JM |
4263 | /* Binary mode. Send target system values byte by byte, in |
4264 | increasing byte addresses. Only escape certain critical | |
4265 | characters. */ | |
6765f3e5 DJ |
4266 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4267 | payload_size); | |
4268 | ||
4269 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4270 | a second try to keep the end of the packet aligned. Don't do |
4271 | this if the packet is tiny. */ | |
4272 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4273 | { |
4274 | int new_nr_bytes; | |
4275 | ||
4276 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4277 | - memaddr); | |
4278 | if (new_nr_bytes != nr_bytes) | |
4279 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4280 | p, &nr_bytes, | |
4281 | payload_size); | |
4282 | } | |
4283 | ||
4284 | p += payload_length; | |
a76d924d | 4285 | if (use_length && nr_bytes < todo) |
c906108c | 4286 | { |
802188a7 | 4287 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4288 | and we have actually sent fewer bytes than planned. |
4289 | Fix-up the length field of the packet. Use the same | |
4290 | number of characters as before. */ | |
917317f4 JM |
4291 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4292 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4293 | } |
a76d924d DJ |
4294 | } |
4295 | else | |
4296 | { | |
917317f4 JM |
4297 | /* Normal mode: Send target system values byte by byte, in |
4298 | increasing byte addresses. Each byte is encoded as a two hex | |
4299 | value. */ | |
2644f393 | 4300 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4301 | p += 2 * nr_bytes; |
c906108c | 4302 | } |
802188a7 | 4303 | |
2e9f7625 | 4304 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4305 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4306 | |
2e9f7625 | 4307 | if (rs->buf[0] == 'E') |
917317f4 JM |
4308 | { |
4309 | /* There is no correspondance between what the remote protocol | |
4310 | uses for errors and errno codes. We would like a cleaner way | |
4311 | of representing errors (big enough to include errno codes, | |
4312 | bfd_error codes, and others). But for now just return EIO. */ | |
4313 | errno = EIO; | |
4314 | return 0; | |
4315 | } | |
802188a7 | 4316 | |
23860348 MS |
4317 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4318 | fewer bytes than we'd planned. */ | |
917317f4 | 4319 | return nr_bytes; |
c906108c SS |
4320 | } |
4321 | ||
a76d924d DJ |
4322 | /* Write memory data directly to the remote machine. |
4323 | This does not inform the data cache; the data cache uses this. | |
4324 | MEMADDR is the address in the remote memory space. | |
4325 | MYADDR is the address of the buffer in our space. | |
4326 | LEN is the number of bytes. | |
4327 | ||
4328 | Returns number of bytes transferred, or 0 (setting errno) for | |
4329 | error. Only transfer a single packet. */ | |
4330 | ||
4331 | int | |
4332 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4333 | { | |
4334 | char *packet_format = 0; | |
4335 | ||
4336 | /* Check whether the target supports binary download. */ | |
4337 | check_binary_download (memaddr); | |
4338 | ||
4339 | switch (remote_protocol_packets[PACKET_X].support) | |
4340 | { | |
4341 | case PACKET_ENABLE: | |
4342 | packet_format = "X"; | |
4343 | break; | |
4344 | case PACKET_DISABLE: | |
4345 | packet_format = "M"; | |
4346 | break; | |
4347 | case PACKET_SUPPORT_UNKNOWN: | |
4348 | internal_error (__FILE__, __LINE__, | |
4349 | _("remote_write_bytes: bad internal state")); | |
4350 | default: | |
4351 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4352 | } | |
4353 | ||
4354 | return remote_write_bytes_aux (packet_format, | |
4355 | memaddr, myaddr, len, packet_format[0], 1); | |
4356 | } | |
4357 | ||
c906108c SS |
4358 | /* Read memory data directly from the remote machine. |
4359 | This does not use the data cache; the data cache uses this. | |
4360 | MEMADDR is the address in the remote memory space. | |
4361 | MYADDR is the address of the buffer in our space. | |
4362 | LEN is the number of bytes. | |
4363 | ||
4364 | Returns number of bytes transferred, or 0 for error. */ | |
4365 | ||
917317f4 JM |
4366 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4367 | remote targets) shouldn't attempt to read the entire buffer. | |
4368 | Instead it should read a single packet worth of data and then | |
4369 | return the byte size of that packet to the caller. The caller (its | |
4370 | caller and its callers caller ;-) already contains code for | |
23860348 | 4371 | handling partial reads. */ |
917317f4 | 4372 | |
449092f6 | 4373 | int |
cfd77fa1 | 4374 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4375 | { |
6d820c5c | 4376 | struct remote_state *rs = get_remote_state (); |
23860348 | 4377 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4378 | int origlen; |
4379 | ||
b2182ed2 DJ |
4380 | if (len <= 0) |
4381 | return 0; | |
4382 | ||
11cf8741 | 4383 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4384 | /* The packet buffer will be large enough for the payload; |
4385 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4386 | |
4387 | origlen = len; | |
4388 | while (len > 0) | |
4389 | { | |
c906108c SS |
4390 | char *p; |
4391 | int todo; | |
4392 | int i; | |
4393 | ||
c5aa993b | 4394 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4395 | |
4396 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4397 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4398 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4399 | p = rs->buf; |
c906108c SS |
4400 | *p++ = 'm'; |
4401 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4402 | *p++ = ','; | |
4403 | p += hexnumstr (p, (ULONGEST) todo); | |
4404 | *p = '\0'; | |
4405 | ||
2e9f7625 | 4406 | putpkt (rs->buf); |
6d820c5c | 4407 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4408 | |
2e9f7625 DJ |
4409 | if (rs->buf[0] == 'E' |
4410 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4411 | && rs->buf[3] == '\0') | |
c906108c | 4412 | { |
23860348 MS |
4413 | /* There is no correspondance between what the remote |
4414 | protocol uses for errors and errno codes. We would like | |
4415 | a cleaner way of representing errors (big enough to | |
4416 | include errno codes, bfd_error codes, and others). But | |
4417 | for now just return EIO. */ | |
c906108c SS |
4418 | errno = EIO; |
4419 | return 0; | |
4420 | } | |
4421 | ||
c5aa993b JM |
4422 | /* Reply describes memory byte by byte, |
4423 | each byte encoded as two hex characters. */ | |
c906108c | 4424 | |
2e9f7625 | 4425 | p = rs->buf; |
30559e10 | 4426 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4427 | { |
30559e10 | 4428 | /* Reply is short. This means that we were able to read |
23860348 | 4429 | only part of what we wanted to. */ |
30559e10 | 4430 | return i + (origlen - len); |
c906108c SS |
4431 | } |
4432 | myaddr += todo; | |
4433 | memaddr += todo; | |
4434 | len -= todo; | |
4435 | } | |
4436 | return origlen; | |
4437 | } | |
4438 | \f | |
4439 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4440 | transferring to or from debugger address BUFFER. Write to inferior |
4441 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4442 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4443 | |
c906108c | 4444 | static int |
961cb7b5 | 4445 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4446 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4447 | struct target_ops *target) |
c906108c | 4448 | { |
4930751a C |
4449 | int res; |
4450 | ||
4930751a | 4451 | if (should_write) |
b2182ed2 | 4452 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4453 | else |
b2182ed2 | 4454 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4455 | |
4456 | return res; | |
c906108c SS |
4457 | } |
4458 | ||
a76d924d DJ |
4459 | /* Sends a packet with content determined by the printf format string |
4460 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4461 | whether the packet was a success, a failure, or unknown. */ | |
4462 | ||
4463 | enum packet_result | |
4464 | remote_send_printf (const char *format, ...) | |
4465 | { | |
4466 | struct remote_state *rs = get_remote_state (); | |
4467 | int max_size = get_remote_packet_size (); | |
4468 | ||
4469 | va_list ap; | |
4470 | va_start (ap, format); | |
4471 | ||
4472 | rs->buf[0] = '\0'; | |
4473 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4474 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4475 | ||
4476 | if (putpkt (rs->buf) < 0) | |
4477 | error (_("Communication problem with target.")); | |
4478 | ||
4479 | rs->buf[0] = '\0'; | |
4480 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4481 | ||
4482 | return packet_check_result (rs->buf); | |
4483 | } | |
4484 | ||
4485 | static void | |
4486 | restore_remote_timeout (void *p) | |
4487 | { | |
4488 | int value = *(int *)p; | |
4489 | remote_timeout = value; | |
4490 | } | |
4491 | ||
4492 | /* Flash writing can take quite some time. We'll set | |
4493 | effectively infinite timeout for flash operations. | |
4494 | In future, we'll need to decide on a better approach. */ | |
4495 | static const int remote_flash_timeout = 1000; | |
4496 | ||
4497 | static void | |
4498 | remote_flash_erase (struct target_ops *ops, | |
4499 | ULONGEST address, LONGEST length) | |
4500 | { | |
4501 | int saved_remote_timeout = remote_timeout; | |
4502 | enum packet_result ret; | |
4503 | ||
4504 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4505 | &saved_remote_timeout); | |
4506 | remote_timeout = remote_flash_timeout; | |
4507 | ||
4508 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4509 | paddr (address), | |
4510 | phex (length, 4)); | |
4511 | switch (ret) | |
4512 | { | |
4513 | case PACKET_UNKNOWN: | |
4514 | error (_("Remote target does not support flash erase")); | |
4515 | case PACKET_ERROR: | |
4516 | error (_("Error erasing flash with vFlashErase packet")); | |
4517 | default: | |
4518 | break; | |
4519 | } | |
4520 | ||
4521 | do_cleanups (back_to); | |
4522 | } | |
4523 | ||
4524 | static LONGEST | |
4525 | remote_flash_write (struct target_ops *ops, | |
4526 | ULONGEST address, LONGEST length, | |
4527 | const gdb_byte *data) | |
4528 | { | |
4529 | int saved_remote_timeout = remote_timeout; | |
4530 | int ret; | |
4531 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4532 | &saved_remote_timeout); | |
4533 | ||
4534 | remote_timeout = remote_flash_timeout; | |
4535 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4536 | do_cleanups (back_to); | |
4537 | ||
4538 | return ret; | |
4539 | } | |
4540 | ||
4541 | static void | |
4542 | remote_flash_done (struct target_ops *ops) | |
4543 | { | |
4544 | int saved_remote_timeout = remote_timeout; | |
4545 | int ret; | |
4546 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4547 | &saved_remote_timeout); | |
4548 | ||
4549 | remote_timeout = remote_flash_timeout; | |
4550 | ret = remote_send_printf ("vFlashDone"); | |
4551 | do_cleanups (back_to); | |
4552 | ||
4553 | switch (ret) | |
4554 | { | |
4555 | case PACKET_UNKNOWN: | |
4556 | error (_("Remote target does not support vFlashDone")); | |
4557 | case PACKET_ERROR: | |
4558 | error (_("Error finishing flash operation")); | |
4559 | default: | |
4560 | break; | |
4561 | } | |
4562 | } | |
4563 | ||
c906108c | 4564 | static void |
fba45db2 | 4565 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4566 | { |
4567 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4568 | } | |
4569 | \f | |
4570 | /* Stuff for dealing with the packets which are part of this protocol. | |
4571 | See comment at top of file for details. */ | |
4572 | ||
0876f84a | 4573 | /* Read a single character from the remote end. */ |
c906108c SS |
4574 | |
4575 | static int | |
fba45db2 | 4576 | readchar (int timeout) |
c906108c SS |
4577 | { |
4578 | int ch; | |
4579 | ||
2cd58942 | 4580 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4581 | |
2acceee2 | 4582 | if (ch >= 0) |
0876f84a | 4583 | return ch; |
2acceee2 JM |
4584 | |
4585 | switch ((enum serial_rc) ch) | |
c906108c SS |
4586 | { |
4587 | case SERIAL_EOF: | |
2acceee2 | 4588 | target_mourn_inferior (); |
8a3fe4f8 | 4589 | error (_("Remote connection closed")); |
2acceee2 | 4590 | /* no return */ |
c906108c | 4591 | case SERIAL_ERROR: |
e2e0b3e5 | 4592 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4593 | /* no return */ |
c906108c | 4594 | case SERIAL_TIMEOUT: |
2acceee2 | 4595 | break; |
c906108c | 4596 | } |
2acceee2 | 4597 | return ch; |
c906108c SS |
4598 | } |
4599 | ||
6d820c5c DJ |
4600 | /* Send the command in *BUF to the remote machine, and read the reply |
4601 | into *BUF. Report an error if we get an error reply. Resize | |
4602 | *BUF using xrealloc if necessary to hold the result, and update | |
4603 | *SIZEOF_BUF. */ | |
c906108c SS |
4604 | |
4605 | static void | |
6d820c5c DJ |
4606 | remote_send (char **buf, |
4607 | long *sizeof_buf) | |
c906108c | 4608 | { |
6d820c5c | 4609 | putpkt (*buf); |
c2d11a7d | 4610 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4611 | |
6d820c5c DJ |
4612 | if ((*buf)[0] == 'E') |
4613 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4614 | } |
4615 | ||
4616 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4617 | string notation. */ | |
4618 | ||
4619 | static void | |
fba45db2 | 4620 | print_packet (char *buf) |
c906108c SS |
4621 | { |
4622 | puts_filtered ("\""); | |
43e526b9 | 4623 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4624 | puts_filtered ("\""); |
4625 | } | |
4626 | ||
4627 | int | |
fba45db2 | 4628 | putpkt (char *buf) |
c906108c SS |
4629 | { |
4630 | return putpkt_binary (buf, strlen (buf)); | |
4631 | } | |
4632 | ||
4633 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4634 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4635 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4636 | and for a possible /0 if we are debugging (remote_debug) and want |
4637 | to print the sent packet as a string. */ | |
c906108c SS |
4638 | |
4639 | static int | |
fba45db2 | 4640 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
4641 | { |
4642 | int i; | |
4643 | unsigned char csum = 0; | |
11cf8741 | 4644 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4645 | |
c906108c SS |
4646 | int ch; |
4647 | int tcount = 0; | |
4648 | char *p; | |
4649 | ||
4650 | /* Copy the packet into buffer BUF2, encapsulating it | |
4651 | and giving it a checksum. */ | |
4652 | ||
c906108c SS |
4653 | p = buf2; |
4654 | *p++ = '$'; | |
4655 | ||
4656 | for (i = 0; i < cnt; i++) | |
4657 | { | |
4658 | csum += buf[i]; | |
4659 | *p++ = buf[i]; | |
4660 | } | |
4661 | *p++ = '#'; | |
4662 | *p++ = tohex ((csum >> 4) & 0xf); | |
4663 | *p++ = tohex (csum & 0xf); | |
4664 | ||
4665 | /* Send it over and over until we get a positive ack. */ | |
4666 | ||
4667 | while (1) | |
4668 | { | |
4669 | int started_error_output = 0; | |
4670 | ||
4671 | if (remote_debug) | |
4672 | { | |
4673 | *p = '\0'; | |
43e526b9 JM |
4674 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4675 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4676 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4677 | gdb_flush (gdb_stdlog); |
c906108c | 4678 | } |
2cd58942 | 4679 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4680 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4681 | |
23860348 | 4682 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4683 | while (1) |
4684 | { | |
4685 | ch = readchar (remote_timeout); | |
4686 | ||
c5aa993b | 4687 | if (remote_debug) |
c906108c SS |
4688 | { |
4689 | switch (ch) | |
4690 | { | |
4691 | case '+': | |
1216fa2c | 4692 | case '-': |
c906108c SS |
4693 | case SERIAL_TIMEOUT: |
4694 | case '$': | |
4695 | if (started_error_output) | |
4696 | { | |
4697 | putchar_unfiltered ('\n'); | |
4698 | started_error_output = 0; | |
4699 | } | |
4700 | } | |
4701 | } | |
4702 | ||
4703 | switch (ch) | |
4704 | { | |
4705 | case '+': | |
4706 | if (remote_debug) | |
0f71a2f6 | 4707 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4708 | return 1; |
1216fa2c AC |
4709 | case '-': |
4710 | if (remote_debug) | |
4711 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4712 | case SERIAL_TIMEOUT: |
c5aa993b | 4713 | tcount++; |
c906108c SS |
4714 | if (tcount > 3) |
4715 | return 0; | |
23860348 | 4716 | break; /* Retransmit buffer. */ |
c906108c SS |
4717 | case '$': |
4718 | { | |
40e3f985 | 4719 | if (remote_debug) |
2bc416ba | 4720 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4721 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4722 | /* It's probably an old response sent because an ACK |
4723 | was lost. Gobble up the packet and ack it so it | |
4724 | doesn't get retransmitted when we resend this | |
4725 | packet. */ | |
6d820c5c | 4726 | skip_frame (); |
d6f7abdf | 4727 | serial_write (remote_desc, "+", 1); |
23860348 | 4728 | continue; /* Now, go look for +. */ |
c906108c SS |
4729 | } |
4730 | default: | |
4731 | if (remote_debug) | |
4732 | { | |
4733 | if (!started_error_output) | |
4734 | { | |
4735 | started_error_output = 1; | |
0f71a2f6 | 4736 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4737 | } |
0f71a2f6 | 4738 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4739 | } |
4740 | continue; | |
4741 | } | |
23860348 | 4742 | break; /* Here to retransmit. */ |
c906108c SS |
4743 | } |
4744 | ||
4745 | #if 0 | |
4746 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4747 | able to get out next time we call QUIT, without anything as |
4748 | violent as interrupt_query. If we want to provide a way out of | |
4749 | here without getting to the next QUIT, it should be based on | |
4750 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4751 | if (quit_flag) |
4752 | { | |
4753 | quit_flag = 0; | |
4754 | interrupt_query (); | |
4755 | } | |
4756 | #endif | |
4757 | } | |
4758 | } | |
4759 | ||
6d820c5c DJ |
4760 | /* Come here after finding the start of a frame when we expected an |
4761 | ack. Do our best to discard the rest of this packet. */ | |
4762 | ||
4763 | static void | |
4764 | skip_frame (void) | |
4765 | { | |
4766 | int c; | |
4767 | ||
4768 | while (1) | |
4769 | { | |
4770 | c = readchar (remote_timeout); | |
4771 | switch (c) | |
4772 | { | |
4773 | case SERIAL_TIMEOUT: | |
4774 | /* Nothing we can do. */ | |
4775 | return; | |
4776 | case '#': | |
4777 | /* Discard the two bytes of checksum and stop. */ | |
4778 | c = readchar (remote_timeout); | |
4779 | if (c >= 0) | |
4780 | c = readchar (remote_timeout); | |
4781 | ||
4782 | return; | |
4783 | case '*': /* Run length encoding. */ | |
4784 | /* Discard the repeat count. */ | |
4785 | c = readchar (remote_timeout); | |
4786 | if (c < 0) | |
4787 | return; | |
4788 | break; | |
4789 | default: | |
4790 | /* A regular character. */ | |
4791 | break; | |
4792 | } | |
4793 | } | |
4794 | } | |
4795 | ||
c906108c | 4796 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4797 | into *BUF, verifying the checksum, length, and handling run-length |
4798 | compression. NUL terminate the buffer. If there is not enough room, | |
4799 | expand *BUF using xrealloc. | |
c906108c | 4800 | |
c2d11a7d JM |
4801 | Returns -1 on error, number of characters in buffer (ignoring the |
4802 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4803 | SERIAL status indications). */ |
c2d11a7d JM |
4804 | |
4805 | static long | |
6d820c5c DJ |
4806 | read_frame (char **buf_p, |
4807 | long *sizeof_buf) | |
c906108c SS |
4808 | { |
4809 | unsigned char csum; | |
c2d11a7d | 4810 | long bc; |
c906108c | 4811 | int c; |
6d820c5c | 4812 | char *buf = *buf_p; |
c906108c SS |
4813 | |
4814 | csum = 0; | |
c2d11a7d | 4815 | bc = 0; |
c906108c SS |
4816 | |
4817 | while (1) | |
4818 | { | |
4819 | c = readchar (remote_timeout); | |
c906108c SS |
4820 | switch (c) |
4821 | { | |
4822 | case SERIAL_TIMEOUT: | |
4823 | if (remote_debug) | |
0f71a2f6 | 4824 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4825 | return -1; |
c906108c SS |
4826 | case '$': |
4827 | if (remote_debug) | |
0f71a2f6 JM |
4828 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4829 | gdb_stdlog); | |
23860348 | 4830 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4831 | case '#': |
4832 | { | |
4833 | unsigned char pktcsum; | |
e1b09194 AC |
4834 | int check_0 = 0; |
4835 | int check_1 = 0; | |
c906108c | 4836 | |
c2d11a7d | 4837 | buf[bc] = '\0'; |
c906108c | 4838 | |
e1b09194 AC |
4839 | check_0 = readchar (remote_timeout); |
4840 | if (check_0 >= 0) | |
4841 | check_1 = readchar (remote_timeout); | |
802188a7 | 4842 | |
e1b09194 AC |
4843 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4844 | { | |
4845 | if (remote_debug) | |
2bc416ba | 4846 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 4847 | gdb_stdlog); |
e1b09194 AC |
4848 | return -1; |
4849 | } | |
4850 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4851 | { |
4852 | if (remote_debug) | |
2bc416ba | 4853 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 4854 | gdb_stdlog); |
40e3f985 FN |
4855 | return -1; |
4856 | } | |
c906108c | 4857 | |
e1b09194 | 4858 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4859 | if (csum == pktcsum) |
c2d11a7d | 4860 | return bc; |
c906108c | 4861 | |
c5aa993b | 4862 | if (remote_debug) |
c906108c | 4863 | { |
0f71a2f6 | 4864 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4865 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 4866 | pktcsum, csum); |
0876f84a | 4867 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 4868 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 4869 | } |
c2d11a7d | 4870 | /* Number of characters in buffer ignoring trailing |
23860348 | 4871 | NULL. */ |
c2d11a7d | 4872 | return -1; |
c906108c | 4873 | } |
23860348 | 4874 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4875 | { |
4876 | int repeat; | |
4877 | csum += c; | |
c906108c | 4878 | |
b4501125 AC |
4879 | c = readchar (remote_timeout); |
4880 | csum += c; | |
23860348 | 4881 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4882 | |
23860348 | 4883 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4884 | |
6d820c5c | 4885 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4886 | { |
6d820c5c DJ |
4887 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4888 | { | |
4889 | /* Make some more room in the buffer. */ | |
4890 | *sizeof_buf += repeat; | |
4891 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4892 | buf = *buf_p; | |
4893 | } | |
4894 | ||
c2d11a7d JM |
4895 | memset (&buf[bc], buf[bc - 1], repeat); |
4896 | bc += repeat; | |
c2c6d25f JM |
4897 | continue; |
4898 | } | |
4899 | ||
c2d11a7d | 4900 | buf[bc] = '\0'; |
6d820c5c | 4901 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4902 | return -1; |
c2c6d25f | 4903 | } |
c906108c | 4904 | default: |
6d820c5c | 4905 | if (bc >= *sizeof_buf - 1) |
c906108c | 4906 | { |
6d820c5c DJ |
4907 | /* Make some more room in the buffer. */ |
4908 | *sizeof_buf *= 2; | |
4909 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4910 | buf = *buf_p; | |
c906108c SS |
4911 | } |
4912 | ||
6d820c5c DJ |
4913 | buf[bc++] = c; |
4914 | csum += c; | |
4915 | continue; | |
c906108c SS |
4916 | } |
4917 | } | |
4918 | } | |
4919 | ||
4920 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4921 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4922 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4923 | rather than timing out; this is used (in synchronous mode) to wait | |
4924 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4925 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4926 | don't have to change all the calls to getpkt to deal with the | |
4927 | return value, because at the moment I don't know what the right | |
23860348 | 4928 | thing to do it for those. */ |
c906108c | 4929 | void |
6d820c5c DJ |
4930 | getpkt (char **buf, |
4931 | long *sizeof_buf, | |
c2d11a7d | 4932 | int forever) |
d9fcf2fb JM |
4933 | { |
4934 | int timed_out; | |
4935 | ||
4936 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4937 | } | |
4938 | ||
4939 | ||
4940 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4941 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4942 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4943 | rather than timing out; this is used (in synchronous mode) to wait | |
4944 | for a target that is is executing user code to stop. If FOREVER == | |
4945 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
4946 | indication of this to the caller. Otherwise return the number |
4947 | of bytes read. */ | |
3172dc30 | 4948 | static int |
6d820c5c | 4949 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4950 | { |
4951 | int c; | |
4952 | int tries; | |
4953 | int timeout; | |
4954 | int val; | |
4955 | ||
6d820c5c | 4956 | strcpy (*buf, "timeout"); |
c906108c SS |
4957 | |
4958 | if (forever) | |
4959 | { | |
c906108c | 4960 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4961 | } |
4962 | ||
4963 | else | |
4964 | timeout = remote_timeout; | |
4965 | ||
4966 | #define MAX_TRIES 3 | |
4967 | ||
4968 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4969 | { | |
4970 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4971 | continuously, but if it pauses, we'll get a zero from |
4972 | readchar because of timeout. Then we'll count that as a | |
4973 | retry. */ | |
c906108c | 4974 | |
23860348 MS |
4975 | /* Note that we will only wait forever prior to the start of a |
4976 | packet. After that, we expect characters to arrive at a | |
4977 | brisk pace. They should show up within remote_timeout | |
4978 | intervals. */ | |
c906108c SS |
4979 | |
4980 | do | |
4981 | { | |
4982 | c = readchar (timeout); | |
4983 | ||
4984 | if (c == SERIAL_TIMEOUT) | |
4985 | { | |
23860348 | 4986 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4987 | { |
2acceee2 | 4988 | QUIT; |
c906108c | 4989 | target_mourn_inferior (); |
8a3fe4f8 | 4990 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4991 | } |
c906108c | 4992 | if (remote_debug) |
0f71a2f6 | 4993 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4994 | goto retry; |
4995 | } | |
4996 | } | |
4997 | while (c != '$'); | |
4998 | ||
4999 | /* We've found the start of a packet, now collect the data. */ | |
5000 | ||
c2d11a7d | 5001 | val = read_frame (buf, sizeof_buf); |
c906108c | 5002 | |
c2d11a7d | 5003 | if (val >= 0) |
c906108c SS |
5004 | { |
5005 | if (remote_debug) | |
43e526b9 JM |
5006 | { |
5007 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 5008 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
5009 | fprintf_unfiltered (gdb_stdlog, "\n"); |
5010 | } | |
2cd58942 | 5011 | serial_write (remote_desc, "+", 1); |
0876f84a | 5012 | return val; |
c906108c SS |
5013 | } |
5014 | ||
5015 | /* Try the whole thing again. */ | |
5016 | retry: | |
2cd58942 | 5017 | serial_write (remote_desc, "-", 1); |
c906108c SS |
5018 | } |
5019 | ||
2bc416ba | 5020 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 5021 | Give up. */ |
c906108c | 5022 | |
a3f17187 | 5023 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 5024 | serial_write (remote_desc, "+", 1); |
0876f84a | 5025 | return -1; |
c906108c SS |
5026 | } |
5027 | \f | |
5028 | static void | |
fba45db2 | 5029 | remote_kill (void) |
c906108c SS |
5030 | { |
5031 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
5032 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
5033 | if (kill_kludge) | |
5034 | { | |
5035 | kill_kludge = 0; | |
5036 | target_mourn_inferior (); | |
5037 | return; | |
5038 | } | |
5039 | ||
5040 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
5041 | speaking terms with the remote system. */ | |
c5aa993b | 5042 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
5043 | |
5044 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5045 | we do or not. For the existing stubs, kill is a noop. */ | |
5046 | target_mourn_inferior (); | |
5047 | } | |
5048 | ||
23860348 | 5049 | /* Async version of remote_kill. */ |
43ff13b4 | 5050 | static void |
fba45db2 | 5051 | remote_async_kill (void) |
43ff13b4 | 5052 | { |
23860348 | 5053 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 5054 | if (target_is_async_p ()) |
2cd58942 | 5055 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
5056 | |
5057 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
5058 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
5059 | if (kill_kludge) | |
5060 | { | |
5061 | kill_kludge = 0; | |
5062 | target_mourn_inferior (); | |
5063 | return; | |
5064 | } | |
5065 | ||
23860348 MS |
5066 | /* Use catch_errors so the user can quit from gdb even when we |
5067 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 5068 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
5069 | |
5070 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5071 | we do or not. For the existing stubs, kill is a noop. */ | |
5072 | target_mourn_inferior (); | |
5073 | } | |
5074 | ||
c906108c | 5075 | static void |
fba45db2 | 5076 | remote_mourn (void) |
c906108c SS |
5077 | { |
5078 | remote_mourn_1 (&remote_ops); | |
5079 | } | |
5080 | ||
53a5351d | 5081 | static void |
fba45db2 | 5082 | remote_async_mourn (void) |
53a5351d JM |
5083 | { |
5084 | remote_mourn_1 (&remote_async_ops); | |
5085 | } | |
5086 | ||
c906108c | 5087 | static void |
fba45db2 | 5088 | extended_remote_mourn (void) |
c906108c SS |
5089 | { |
5090 | /* We do _not_ want to mourn the target like this; this will | |
5091 | remove the extended remote target from the target stack, | |
802188a7 | 5092 | and the next time the user says "run" it'll fail. |
c906108c SS |
5093 | |
5094 | FIXME: What is the right thing to do here? */ | |
5095 | #if 0 | |
5096 | remote_mourn_1 (&extended_remote_ops); | |
5097 | #endif | |
5098 | } | |
5099 | ||
5100 | /* Worker function for remote_mourn. */ | |
5101 | static void | |
fba45db2 | 5102 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
5103 | { |
5104 | unpush_target (target); | |
5105 | generic_mourn_inferior (); | |
5106 | } | |
5107 | ||
5108 | /* In the extended protocol we want to be able to do things like | |
5109 | "run" and have them basically work as expected. So we need | |
802188a7 | 5110 | a special create_inferior function. |
c906108c SS |
5111 | |
5112 | FIXME: One day add support for changing the exec file | |
5113 | we're debugging, arguments and an environment. */ | |
5114 | ||
5115 | static void | |
23860348 MS |
5116 | extended_remote_create_inferior (char *exec_file, char *args, |
5117 | char **env, int from_tty) | |
c906108c SS |
5118 | { |
5119 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5120 | the remote server. */ | |
5121 | remove_breakpoints (); | |
5122 | ||
5123 | /* Now restart the remote server. */ | |
5124 | extended_remote_restart (); | |
5125 | ||
424163ea DJ |
5126 | /* NOTE: We don't need to recheck for a target description here; but |
5127 | if we gain the ability to switch the remote executable we may | |
5128 | need to, if for instance we are running a process which requested | |
5129 | different emulated hardware from the operating system. A | |
5130 | concrete example of this is ARM GNU/Linux, where some binaries | |
5131 | will have a legacy FPA coprocessor emulated and others may have | |
5132 | access to a hardware VFP unit. */ | |
5133 | ||
c906108c SS |
5134 | /* Now put the breakpoints back in. This way we're safe if the |
5135 | restart function works via a unix fork on the remote side. */ | |
5136 | insert_breakpoints (); | |
5137 | ||
5138 | /* Clean up from the last time we were running. */ | |
5139 | clear_proceed_status (); | |
c906108c SS |
5140 | } |
5141 | ||
23860348 | 5142 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 5143 | static void |
23860348 MS |
5144 | extended_remote_async_create_inferior (char *exec_file, char *args, |
5145 | char **env, int from_tty) | |
43ff13b4 JM |
5146 | { |
5147 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5148 | the remote server. */ | |
5149 | remove_breakpoints (); | |
5150 | ||
5151 | /* If running asynchronously, register the target file descriptor | |
23860348 | 5152 | with the event loop. */ |
362646f5 | 5153 | if (target_can_async_p ()) |
2acceee2 | 5154 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5155 | |
5156 | /* Now restart the remote server. */ | |
5157 | extended_remote_restart (); | |
5158 | ||
424163ea DJ |
5159 | /* NOTE: We don't need to recheck for a target description here; but |
5160 | if we gain the ability to switch the remote executable we may | |
5161 | need to, if for instance we are running a process which requested | |
5162 | different emulated hardware from the operating system. A | |
5163 | concrete example of this is ARM GNU/Linux, where some binaries | |
5164 | will have a legacy FPA coprocessor emulated and others may have | |
5165 | access to a hardware VFP unit. */ | |
5166 | ||
43ff13b4 JM |
5167 | /* Now put the breakpoints back in. This way we're safe if the |
5168 | restart function works via a unix fork on the remote side. */ | |
5169 | insert_breakpoints (); | |
5170 | ||
5171 | /* Clean up from the last time we were running. */ | |
5172 | clear_proceed_status (); | |
43ff13b4 | 5173 | } |
c906108c | 5174 | \f |
c5aa993b | 5175 | |
8181d85f DJ |
5176 | /* Insert a breakpoint. On targets that have software breakpoint |
5177 | support, we ask the remote target to do the work; on targets | |
5178 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5179 | |
5180 | static int | |
8181d85f | 5181 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5182 | { |
8181d85f | 5183 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5184 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5185 | |
d471ea57 AC |
5186 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5187 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5188 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5189 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5190 | |
444abaca | 5191 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5192 | { |
6d820c5c | 5193 | char *p = rs->buf; |
802188a7 | 5194 | |
96baa820 JM |
5195 | *(p++) = 'Z'; |
5196 | *(p++) = '0'; | |
5197 | *(p++) = ','; | |
3b3b875c UW |
5198 | gdbarch_breakpoint_from_pc |
5199 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
8181d85f DJ |
5200 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5201 | p += hexnumstr (p, addr); | |
5202 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5203 | |
6d820c5c DJ |
5204 | putpkt (rs->buf); |
5205 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5206 | |
6d820c5c | 5207 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5208 | { |
d471ea57 AC |
5209 | case PACKET_ERROR: |
5210 | return -1; | |
5211 | case PACKET_OK: | |
5212 | return 0; | |
5213 | case PACKET_UNKNOWN: | |
5214 | break; | |
96baa820 JM |
5215 | } |
5216 | } | |
c906108c | 5217 | |
8181d85f | 5218 | return memory_insert_breakpoint (bp_tgt); |
c906108c SS |
5219 | } |
5220 | ||
5221 | static int | |
8181d85f | 5222 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5223 | { |
8181d85f | 5224 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5225 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5226 | int bp_size; |
5227 | ||
444abaca | 5228 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5229 | { |
6d820c5c | 5230 | char *p = rs->buf; |
802188a7 | 5231 | |
96baa820 JM |
5232 | *(p++) = 'z'; |
5233 | *(p++) = '0'; | |
5234 | *(p++) = ','; | |
5235 | ||
8181d85f DJ |
5236 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5237 | p += hexnumstr (p, addr); | |
5238 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5239 | |
6d820c5c DJ |
5240 | putpkt (rs->buf); |
5241 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5242 | |
6d820c5c | 5243 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5244 | } |
5245 | ||
8181d85f | 5246 | return memory_remove_breakpoint (bp_tgt); |
c906108c SS |
5247 | } |
5248 | ||
d471ea57 AC |
5249 | static int |
5250 | watchpoint_to_Z_packet (int type) | |
5251 | { | |
5252 | switch (type) | |
5253 | { | |
5254 | case hw_write: | |
bb858e6a | 5255 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5256 | break; |
5257 | case hw_read: | |
bb858e6a | 5258 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5259 | break; |
5260 | case hw_access: | |
bb858e6a | 5261 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5262 | break; |
5263 | default: | |
8e65ff28 | 5264 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5265 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5266 | } |
5267 | } | |
5268 | ||
3c3bea1c | 5269 | static int |
fba45db2 | 5270 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5271 | { |
d01949b6 | 5272 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5273 | char *p; |
d471ea57 | 5274 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5275 | |
444abaca | 5276 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5277 | return -1; |
802188a7 | 5278 | |
6d820c5c DJ |
5279 | sprintf (rs->buf, "Z%x,", packet); |
5280 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5281 | addr = remote_address_masked (addr); |
5282 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5283 | sprintf (p, ",%x", len); |
802188a7 | 5284 | |
6d820c5c DJ |
5285 | putpkt (rs->buf); |
5286 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5287 | |
6d820c5c | 5288 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5289 | { |
5290 | case PACKET_ERROR: | |
5291 | case PACKET_UNKNOWN: | |
5292 | return -1; | |
5293 | case PACKET_OK: | |
5294 | return 0; | |
5295 | } | |
8e65ff28 | 5296 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5297 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5298 | } |
5299 | ||
d471ea57 | 5300 | |
3c3bea1c | 5301 | static int |
fba45db2 | 5302 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5303 | { |
d01949b6 | 5304 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5305 | char *p; |
d471ea57 AC |
5306 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5307 | ||
444abaca | 5308 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5309 | return -1; |
802188a7 | 5310 | |
6d820c5c DJ |
5311 | sprintf (rs->buf, "z%x,", packet); |
5312 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5313 | addr = remote_address_masked (addr); |
5314 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5315 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5316 | putpkt (rs->buf); |
5317 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5318 | |
6d820c5c | 5319 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5320 | { |
5321 | case PACKET_ERROR: | |
5322 | case PACKET_UNKNOWN: | |
5323 | return -1; | |
5324 | case PACKET_OK: | |
5325 | return 0; | |
5326 | } | |
8e65ff28 | 5327 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5328 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5329 | } |
5330 | ||
3c3bea1c | 5331 | |
501eef12 AC |
5332 | int remote_hw_watchpoint_limit = -1; |
5333 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5334 | |
b9362cc7 | 5335 | static int |
3c3bea1c | 5336 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5337 | { |
3c3bea1c GS |
5338 | if (type == bp_hardware_breakpoint) |
5339 | { | |
5340 | if (remote_hw_breakpoint_limit == 0) | |
5341 | return 0; | |
501eef12 AC |
5342 | else if (remote_hw_breakpoint_limit < 0) |
5343 | return 1; | |
3c3bea1c GS |
5344 | else if (cnt <= remote_hw_breakpoint_limit) |
5345 | return 1; | |
5346 | } | |
5347 | else | |
5348 | { | |
5349 | if (remote_hw_watchpoint_limit == 0) | |
5350 | return 0; | |
501eef12 AC |
5351 | else if (remote_hw_watchpoint_limit < 0) |
5352 | return 1; | |
3c3bea1c GS |
5353 | else if (ot) |
5354 | return -1; | |
5355 | else if (cnt <= remote_hw_watchpoint_limit) | |
5356 | return 1; | |
5357 | } | |
5358 | return -1; | |
5359 | } | |
5360 | ||
b9362cc7 | 5361 | static int |
3c3bea1c GS |
5362 | remote_stopped_by_watchpoint (void) |
5363 | { | |
5364 | return remote_stopped_by_watchpoint_p; | |
5365 | } | |
5366 | ||
7270d8f2 OF |
5367 | extern int stepped_after_stopped_by_watchpoint; |
5368 | ||
4aa7a7f5 JJ |
5369 | static int |
5370 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5371 | { |
4aa7a7f5 | 5372 | int rc = 0; |
7270d8f2 OF |
5373 | if (remote_stopped_by_watchpoint () |
5374 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
5375 | { |
5376 | *addr_p = remote_watch_data_address; | |
5377 | rc = 1; | |
5378 | } | |
5379 | ||
5380 | return rc; | |
3c3bea1c GS |
5381 | } |
5382 | ||
5383 | ||
5384 | static int | |
8181d85f | 5385 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5386 | { |
8181d85f | 5387 | CORE_ADDR addr; |
d01949b6 | 5388 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5389 | char *p = rs->buf; |
802188a7 | 5390 | |
c8189ed1 | 5391 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5392 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5393 | |
3b3b875c UW |
5394 | gdbarch_breakpoint_from_pc |
5395 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
3c3bea1c | 5396 | |
444abaca | 5397 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5398 | return -1; |
2bc416ba | 5399 | |
96baa820 JM |
5400 | *(p++) = 'Z'; |
5401 | *(p++) = '1'; | |
5402 | *(p++) = ','; | |
802188a7 | 5403 | |
8181d85f | 5404 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5405 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5406 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5407 | |
6d820c5c DJ |
5408 | putpkt (rs->buf); |
5409 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5410 | |
6d820c5c | 5411 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5412 | { |
5413 | case PACKET_ERROR: | |
5414 | case PACKET_UNKNOWN: | |
5415 | return -1; | |
5416 | case PACKET_OK: | |
5417 | return 0; | |
5418 | } | |
8e65ff28 | 5419 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5420 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5421 | } |
5422 | ||
d471ea57 | 5423 | |
802188a7 | 5424 | static int |
8181d85f | 5425 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5426 | { |
8181d85f | 5427 | CORE_ADDR addr; |
d01949b6 | 5428 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5429 | char *p = rs->buf; |
c8189ed1 | 5430 | |
444abaca | 5431 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5432 | return -1; |
802188a7 | 5433 | |
96baa820 JM |
5434 | *(p++) = 'z'; |
5435 | *(p++) = '1'; | |
5436 | *(p++) = ','; | |
802188a7 | 5437 | |
8181d85f | 5438 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5439 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5440 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5441 | |
6d820c5c DJ |
5442 | putpkt (rs->buf); |
5443 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5444 | |
6d820c5c | 5445 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5446 | { |
5447 | case PACKET_ERROR: | |
5448 | case PACKET_UNKNOWN: | |
5449 | return -1; | |
5450 | case PACKET_OK: | |
5451 | return 0; | |
5452 | } | |
8e65ff28 | 5453 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5454 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5455 | } |
96baa820 | 5456 | |
c906108c SS |
5457 | /* Some targets are only capable of doing downloads, and afterwards |
5458 | they switch to the remote serial protocol. This function provides | |
5459 | a clean way to get from the download target to the remote target. | |
5460 | It's basically just a wrapper so that we don't have to expose any | |
5461 | of the internal workings of remote.c. | |
5462 | ||
5463 | Prior to calling this routine, you should shutdown the current | |
5464 | target code, else you will get the "A program is being debugged | |
5465 | already..." message. Usually a call to pop_target() suffices. */ | |
5466 | ||
5467 | void | |
fba45db2 | 5468 | push_remote_target (char *name, int from_tty) |
c906108c | 5469 | { |
a3f17187 | 5470 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5471 | remote_open (name, from_tty); |
5472 | } | |
5473 | ||
23860348 | 5474 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5475 | |
c5aa993b JM |
5476 | static unsigned long crc32_table[256] = |
5477 | {0, 0}; | |
c906108c SS |
5478 | |
5479 | static unsigned long | |
fba45db2 | 5480 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5481 | { |
c5aa993b | 5482 | if (!crc32_table[1]) |
c906108c | 5483 | { |
23860348 | 5484 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5485 | int i, j; |
5486 | unsigned int c; | |
5487 | ||
5488 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5489 | { |
5490 | for (c = i << 24, j = 8; j > 0; --j) | |
5491 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5492 | crc32_table[i] = c; | |
5493 | } | |
c906108c SS |
5494 | } |
5495 | ||
5496 | while (len--) | |
5497 | { | |
5498 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5499 | buf++; | |
5500 | } | |
5501 | return crc; | |
5502 | } | |
5503 | ||
5504 | /* compare-sections command | |
5505 | ||
5506 | With no arguments, compares each loadable section in the exec bfd | |
5507 | with the same memory range on the target, and reports mismatches. | |
5508 | Useful for verifying the image on the target against the exec file. | |
5509 | Depends on the target understanding the new "qCRC:" request. */ | |
5510 | ||
e514a9d6 JM |
5511 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5512 | target method (target verify memory) and generic version of the | |
5513 | actual command. This will allow other high-level code (especially | |
23860348 | 5514 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5515 | |
c906108c | 5516 | static void |
fba45db2 | 5517 | compare_sections_command (char *args, int from_tty) |
c906108c | 5518 | { |
d01949b6 | 5519 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5520 | asection *s; |
5521 | unsigned long host_crc, target_crc; | |
5522 | extern bfd *exec_bfd; | |
5523 | struct cleanup *old_chain; | |
085dd6e6 JM |
5524 | char *tmp; |
5525 | char *sectdata; | |
ce359b09 | 5526 | const char *sectname; |
c906108c SS |
5527 | bfd_size_type size; |
5528 | bfd_vma lma; | |
5529 | int matched = 0; | |
5530 | int mismatched = 0; | |
5531 | ||
5532 | if (!exec_bfd) | |
8a3fe4f8 | 5533 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5534 | if (!current_target.to_shortname || |
5535 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5536 | error (_("command can only be used with remote target")); |
c906108c | 5537 | |
c5aa993b | 5538 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5539 | { |
5540 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5541 | continue; /* skip non-loadable section */ |
c906108c | 5542 | |
2c500098 | 5543 | size = bfd_get_section_size (s); |
c906108c | 5544 | if (size == 0) |
c5aa993b | 5545 | continue; /* skip zero-length section */ |
c906108c | 5546 | |
ce359b09 | 5547 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5548 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5549 | continue; /* not the section selected by user */ |
c906108c | 5550 | |
c5aa993b | 5551 | matched = 1; /* do this section */ |
c906108c | 5552 | lma = s->lma; |
23860348 | 5553 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5554 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5555 | (long) lma, (long) size); |
6d820c5c | 5556 | putpkt (rs->buf); |
c906108c | 5557 | |
23860348 MS |
5558 | /* Be clever; compute the host_crc before waiting for target |
5559 | reply. */ | |
c906108c | 5560 | sectdata = xmalloc (size); |
b8c9b27d | 5561 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5562 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5563 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5564 | ||
6d820c5c DJ |
5565 | getpkt (&rs->buf, &rs->buf_size, 0); |
5566 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5567 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5568 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5569 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5570 | error (_("remote target does not support this operation")); |
c906108c | 5571 | |
6d820c5c | 5572 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5573 | target_crc = target_crc * 16 + fromhex (*tmp); |
5574 | ||
d4f3574e SS |
5575 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5576 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5577 | if (host_crc == target_crc) |
5578 | printf_filtered ("matched.\n"); | |
5579 | else | |
c5aa993b JM |
5580 | { |
5581 | printf_filtered ("MIS-MATCHED!\n"); | |
5582 | mismatched++; | |
5583 | } | |
c906108c SS |
5584 | |
5585 | do_cleanups (old_chain); | |
5586 | } | |
5587 | if (mismatched > 0) | |
8a3fe4f8 AC |
5588 | warning (_("One or more sections of the remote executable does not match\n\ |
5589 | the loaded file\n")); | |
c906108c | 5590 | if (args && !matched) |
a3f17187 | 5591 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5592 | } |
5593 | ||
0e7f50da UW |
5594 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
5595 | into remote target. The number of bytes written to the remote | |
5596 | target is returned, or -1 for error. */ | |
5597 | ||
5598 | static LONGEST | |
5599 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
5600 | const char *annex, const gdb_byte *writebuf, | |
5601 | ULONGEST offset, LONGEST len, | |
5602 | struct packet_config *packet) | |
5603 | { | |
5604 | int i, buf_len; | |
5605 | ULONGEST n; | |
5606 | gdb_byte *wbuf; | |
5607 | struct remote_state *rs = get_remote_state (); | |
5608 | int max_size = get_memory_write_packet_size (); | |
5609 | ||
5610 | if (packet->support == PACKET_DISABLE) | |
5611 | return -1; | |
5612 | ||
5613 | /* Insert header. */ | |
5614 | i = snprintf (rs->buf, max_size, | |
5615 | "qXfer:%s:write:%s:%s:", | |
5616 | object_name, annex ? annex : "", | |
5617 | phex_nz (offset, sizeof offset)); | |
5618 | max_size -= (i + 1); | |
5619 | ||
5620 | /* Escape as much data as fits into rs->buf. */ | |
5621 | buf_len = remote_escape_output | |
5622 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
5623 | ||
5624 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
5625 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
5626 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
5627 | return -1; | |
5628 | ||
5629 | unpack_varlen_hex (rs->buf, &n); | |
5630 | return n; | |
5631 | } | |
5632 | ||
0876f84a DJ |
5633 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5634 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5635 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5636 | The number of bytes read may be less than LEN without indicating an | |
5637 | EOF. PACKET is checked and updated to indicate whether the remote | |
5638 | target supports this object. */ | |
5639 | ||
5640 | static LONGEST | |
5641 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5642 | const char *annex, | |
5643 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5644 | struct packet_config *packet) | |
5645 | { | |
5646 | static char *finished_object; | |
5647 | static char *finished_annex; | |
5648 | static ULONGEST finished_offset; | |
5649 | ||
5650 | struct remote_state *rs = get_remote_state (); | |
5651 | unsigned int total = 0; | |
5652 | LONGEST i, n, packet_len; | |
5653 | ||
5654 | if (packet->support == PACKET_DISABLE) | |
5655 | return -1; | |
5656 | ||
5657 | /* Check whether we've cached an end-of-object packet that matches | |
5658 | this request. */ | |
5659 | if (finished_object) | |
5660 | { | |
5661 | if (strcmp (object_name, finished_object) == 0 | |
5662 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
5663 | && offset == finished_offset) | |
5664 | return 0; | |
5665 | ||
5666 | /* Otherwise, we're now reading something different. Discard | |
5667 | the cache. */ | |
5668 | xfree (finished_object); | |
5669 | xfree (finished_annex); | |
5670 | finished_object = NULL; | |
5671 | finished_annex = NULL; | |
5672 | } | |
5673 | ||
5674 | /* Request only enough to fit in a single packet. The actual data | |
5675 | may not, since we don't know how much of it will need to be escaped; | |
5676 | the target is free to respond with slightly less data. We subtract | |
5677 | five to account for the response type and the protocol frame. */ | |
5678 | n = min (get_remote_packet_size () - 5, len); | |
5679 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
5680 | object_name, annex ? annex : "", | |
5681 | phex_nz (offset, sizeof offset), | |
5682 | phex_nz (n, sizeof n)); | |
5683 | i = putpkt (rs->buf); | |
5684 | if (i < 0) | |
5685 | return -1; | |
5686 | ||
5687 | rs->buf[0] = '\0'; | |
5688 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
5689 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
5690 | return -1; | |
5691 | ||
5692 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
5693 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
5694 | ||
5695 | /* 'm' means there is (or at least might be) more data after this | |
5696 | batch. That does not make sense unless there's at least one byte | |
5697 | of data in this reply. */ | |
5698 | if (rs->buf[0] == 'm' && packet_len == 1) | |
5699 | error (_("Remote qXfer reply contained no data.")); | |
5700 | ||
5701 | /* Got some data. */ | |
5702 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
5703 | ||
5704 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
5705 | or possibly empty. If we have the final block of a non-empty |
5706 | object, record this fact to bypass a subsequent partial read. */ | |
5707 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
5708 | { |
5709 | finished_object = xstrdup (object_name); | |
5710 | finished_annex = xstrdup (annex ? annex : ""); | |
5711 | finished_offset = offset + i; | |
5712 | } | |
5713 | ||
5714 | return i; | |
5715 | } | |
5716 | ||
1e3ff5ad | 5717 | static LONGEST |
4b8a223f | 5718 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
5719 | const char *annex, gdb_byte *readbuf, |
5720 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 5721 | { |
d01949b6 | 5722 | struct remote_state *rs = get_remote_state (); |
c906108c | 5723 | int i; |
6d820c5c | 5724 | char *p2; |
1e3ff5ad | 5725 | char query_type; |
c906108c | 5726 | |
b2182ed2 | 5727 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
5728 | if (object == TARGET_OBJECT_MEMORY) |
5729 | { | |
5730 | int xfered; | |
5731 | errno = 0; | |
5732 | ||
5733 | if (writebuf != NULL) | |
b2182ed2 | 5734 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 5735 | else |
b2182ed2 | 5736 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
5737 | |
5738 | if (xfered > 0) | |
5739 | return xfered; | |
5740 | else if (xfered == 0 && errno == 0) | |
5741 | return 0; | |
5742 | else | |
5743 | return -1; | |
5744 | } | |
5745 | ||
0e7f50da UW |
5746 | /* Handle SPU memory using qxfer packets. */ |
5747 | if (object == TARGET_OBJECT_SPU) | |
5748 | { | |
5749 | if (readbuf) | |
5750 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
5751 | &remote_protocol_packets | |
5752 | [PACKET_qXfer_spu_read]); | |
5753 | else | |
5754 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
5755 | &remote_protocol_packets | |
5756 | [PACKET_qXfer_spu_write]); | |
5757 | } | |
5758 | ||
a76d924d DJ |
5759 | /* Only handle flash writes. */ |
5760 | if (writebuf != NULL) | |
5761 | { | |
5762 | LONGEST xfered; | |
5763 | ||
5764 | switch (object) | |
5765 | { | |
5766 | case TARGET_OBJECT_FLASH: | |
5767 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
5768 | ||
5769 | if (xfered > 0) | |
5770 | return xfered; | |
5771 | else if (xfered == 0 && errno == 0) | |
5772 | return 0; | |
5773 | else | |
5774 | return -1; | |
5775 | ||
5776 | default: | |
5777 | return -1; | |
5778 | } | |
5779 | } | |
4b8a223f | 5780 | |
1e3ff5ad AC |
5781 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5782 | objects!!! Instead specify new query packets. */ | |
5783 | switch (object) | |
c906108c | 5784 | { |
1e3ff5ad AC |
5785 | case TARGET_OBJECT_AVR: |
5786 | query_type = 'R'; | |
5787 | break; | |
802188a7 RM |
5788 | |
5789 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
5790 | gdb_assert (annex == NULL); |
5791 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
5792 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 5793 | |
23181151 DJ |
5794 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
5795 | return remote_read_qxfer | |
5796 | (ops, "features", annex, readbuf, offset, len, | |
5797 | &remote_protocol_packets[PACKET_qXfer_features]); | |
5798 | ||
fd79ecee DJ |
5799 | case TARGET_OBJECT_MEMORY_MAP: |
5800 | gdb_assert (annex == NULL); | |
5801 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
5802 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
5803 | ||
1e3ff5ad | 5804 | default: |
c906108c SS |
5805 | return -1; |
5806 | } | |
5807 | ||
4b8a223f | 5808 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5809 | buffer size. */ |
4b8a223f | 5810 | if (offset == 0 && len == 0) |
ea9c271d DJ |
5811 | return (get_remote_packet_size ()); |
5812 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 5813 | large enough let the caller deal with it. */ |
ea9c271d | 5814 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 5815 | return -1; |
ea9c271d | 5816 | len = get_remote_packet_size (); |
1e3ff5ad | 5817 | |
23860348 | 5818 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5819 | if (!remote_desc) |
8a3fe4f8 | 5820 | error (_("remote query is only available after target open")); |
c906108c | 5821 | |
1e3ff5ad | 5822 | gdb_assert (annex != NULL); |
4b8a223f | 5823 | gdb_assert (readbuf != NULL); |
c906108c | 5824 | |
6d820c5c | 5825 | p2 = rs->buf; |
c906108c SS |
5826 | *p2++ = 'q'; |
5827 | *p2++ = query_type; | |
5828 | ||
23860348 MS |
5829 | /* We used one buffer char for the remote protocol q command and |
5830 | another for the query type. As the remote protocol encapsulation | |
5831 | uses 4 chars plus one extra in case we are debugging | |
5832 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5833 | string. */ | |
c906108c | 5834 | i = 0; |
ea9c271d | 5835 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 5836 | { |
1e3ff5ad AC |
5837 | /* Bad caller may have sent forbidden characters. */ |
5838 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5839 | *p2++ = annex[i]; | |
c906108c SS |
5840 | i++; |
5841 | } | |
1e3ff5ad AC |
5842 | *p2 = '\0'; |
5843 | gdb_assert (annex[i] == '\0'); | |
c906108c | 5844 | |
6d820c5c | 5845 | i = putpkt (rs->buf); |
c5aa993b JM |
5846 | if (i < 0) |
5847 | return i; | |
c906108c | 5848 | |
6d820c5c DJ |
5849 | getpkt (&rs->buf, &rs->buf_size, 0); |
5850 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 5851 | |
cfd77fa1 | 5852 | return strlen ((char *) readbuf); |
c906108c SS |
5853 | } |
5854 | ||
96baa820 JM |
5855 | static void |
5856 | remote_rcmd (char *command, | |
d9fcf2fb | 5857 | struct ui_file *outbuf) |
96baa820 | 5858 | { |
d01949b6 | 5859 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5860 | char *p = rs->buf; |
96baa820 JM |
5861 | |
5862 | if (!remote_desc) | |
8a3fe4f8 | 5863 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5864 | |
23860348 | 5865 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5866 | if (command == NULL) |
5867 | command = ""; | |
5868 | ||
23860348 | 5869 | /* The query prefix. */ |
2e9f7625 DJ |
5870 | strcpy (rs->buf, "qRcmd,"); |
5871 | p = strchr (rs->buf, '\0'); | |
96baa820 | 5872 | |
2e9f7625 | 5873 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 5874 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5875 | |
23860348 | 5876 | /* Encode the actual command. */ |
cfd77fa1 | 5877 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 5878 | |
6d820c5c | 5879 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 5880 | error (_("Communication problem with target.")); |
96baa820 JM |
5881 | |
5882 | /* get/display the response */ | |
5883 | while (1) | |
5884 | { | |
2e9f7625 DJ |
5885 | char *buf; |
5886 | ||
23860348 | 5887 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 5888 | rs->buf[0] = '\0'; |
6d820c5c | 5889 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5890 | buf = rs->buf; |
96baa820 | 5891 | if (buf[0] == '\0') |
8a3fe4f8 | 5892 | error (_("Target does not support this command.")); |
96baa820 JM |
5893 | if (buf[0] == 'O' && buf[1] != 'K') |
5894 | { | |
23860348 | 5895 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5896 | continue; |
5897 | } | |
5898 | if (strcmp (buf, "OK") == 0) | |
5899 | break; | |
7be570e7 JM |
5900 | if (strlen (buf) == 3 && buf[0] == 'E' |
5901 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5902 | { | |
8a3fe4f8 | 5903 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5904 | } |
96baa820 JM |
5905 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5906 | { | |
5907 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5908 | fputc_unfiltered (c, outbuf); | |
5909 | } | |
5910 | break; | |
5911 | } | |
5912 | } | |
5913 | ||
fd79ecee DJ |
5914 | static VEC(mem_region_s) * |
5915 | remote_memory_map (struct target_ops *ops) | |
5916 | { | |
5917 | VEC(mem_region_s) *result = NULL; | |
5918 | char *text = target_read_stralloc (¤t_target, | |
5919 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
5920 | ||
5921 | if (text) | |
5922 | { | |
5923 | struct cleanup *back_to = make_cleanup (xfree, text); | |
5924 | result = parse_memory_map (text); | |
5925 | do_cleanups (back_to); | |
5926 | } | |
5927 | ||
5928 | return result; | |
5929 | } | |
5930 | ||
c906108c | 5931 | static void |
fba45db2 | 5932 | packet_command (char *args, int from_tty) |
c906108c | 5933 | { |
d01949b6 | 5934 | struct remote_state *rs = get_remote_state (); |
c906108c | 5935 | |
c5aa993b | 5936 | if (!remote_desc) |
8a3fe4f8 | 5937 | error (_("command can only be used with remote target")); |
c906108c | 5938 | |
c5aa993b | 5939 | if (!args) |
8a3fe4f8 | 5940 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5941 | |
5942 | puts_filtered ("sending: "); | |
5943 | print_packet (args); | |
5944 | puts_filtered ("\n"); | |
5945 | putpkt (args); | |
5946 | ||
6d820c5c | 5947 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5948 | puts_filtered ("received: "); |
6d820c5c | 5949 | print_packet (rs->buf); |
c906108c SS |
5950 | puts_filtered ("\n"); |
5951 | } | |
5952 | ||
5953 | #if 0 | |
23860348 | 5954 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5955 | |
a14ed312 | 5956 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5957 | |
a14ed312 | 5958 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5959 | |
a14ed312 | 5960 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5961 | |
a14ed312 | 5962 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5963 | |
23860348 | 5964 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5965 | |
a14ed312 | 5966 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5967 | |
23860348 | 5968 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5969 | |
a14ed312 | 5970 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5971 | |
a14ed312 | 5972 | static void init_remote_threadtests (void); |
c906108c | 5973 | |
23860348 | 5974 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5975 | |
5976 | static void | |
fba45db2 | 5977 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5978 | { |
5979 | int sample_thread = SAMPLE_THREAD; | |
5980 | ||
a3f17187 | 5981 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5982 | set_thread (sample_thread, 1); |
5983 | } | |
5984 | ||
5985 | ||
5986 | static void | |
fba45db2 | 5987 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5988 | { |
5989 | int sample_thread = SAMPLE_THREAD; | |
5990 | ||
39f77062 | 5991 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5992 | printf_filtered ("PASS: Thread alive test\n"); |
5993 | else | |
5994 | printf_filtered ("FAIL: Thread alive test\n"); | |
5995 | } | |
5996 | ||
23860348 | 5997 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5998 | |
5999 | void | |
fba45db2 | 6000 | output_threadid (char *title, threadref *ref) |
c906108c SS |
6001 | { |
6002 | char hexid[20]; | |
6003 | ||
23860348 | 6004 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
6005 | hexid[16] = 0; |
6006 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
6007 | } | |
6008 | ||
6009 | static void | |
fba45db2 | 6010 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
6011 | { |
6012 | int startflag = 1; | |
6013 | threadref nextthread; | |
6014 | int done, result_count; | |
6015 | threadref threadlist[3]; | |
6016 | ||
6017 | printf_filtered ("Remote Threadlist test\n"); | |
6018 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
6019 | &result_count, &threadlist[0])) | |
6020 | printf_filtered ("FAIL: threadlist test\n"); | |
6021 | else | |
6022 | { | |
6023 | threadref *scan = threadlist; | |
6024 | threadref *limit = scan + result_count; | |
6025 | ||
6026 | while (scan < limit) | |
6027 | output_threadid (" thread ", scan++); | |
6028 | } | |
6029 | } | |
6030 | ||
6031 | void | |
fba45db2 | 6032 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
6033 | { |
6034 | output_threadid ("Threadid: ", &info->threadid); | |
6035 | printf_filtered ("Name: %s\n ", info->shortname); | |
6036 | printf_filtered ("State: %s\n", info->display); | |
6037 | printf_filtered ("other: %s\n\n", info->more_display); | |
6038 | } | |
6039 | ||
6040 | int | |
fba45db2 | 6041 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
6042 | { |
6043 | int result; | |
6044 | int set; | |
6045 | struct gdb_ext_thread_info threadinfo; | |
6046 | ||
6047 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
6048 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
6049 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
6050 | display_thread_info (&threadinfo); | |
6051 | return result; | |
6052 | } | |
6053 | ||
6054 | static void | |
fba45db2 | 6055 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
6056 | { |
6057 | int athread = SAMPLE_THREAD; | |
6058 | threadref thread; | |
6059 | int set; | |
6060 | ||
6061 | int_to_threadref (&thread, athread); | |
6062 | printf_filtered ("Remote Threadinfo test\n"); | |
6063 | if (!get_and_display_threadinfo (&thread)) | |
6064 | printf_filtered ("FAIL cannot get thread info\n"); | |
6065 | } | |
6066 | ||
6067 | static int | |
fba45db2 | 6068 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
6069 | { |
6070 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
6071 | return get_and_display_threadinfo (ref); | |
6072 | } | |
6073 | ||
6074 | static void | |
fba45db2 | 6075 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
6076 | { |
6077 | printf_filtered ("Remote Threadlist update test\n"); | |
6078 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
6079 | } | |
6080 | ||
6081 | static void | |
6082 | init_remote_threadtests (void) | |
6083 | { | |
1bedd215 AC |
6084 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6085 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6086 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6087 | _("Fetch and display info about one thread")); |
c906108c | 6088 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6089 | _("Test setting to a different thread")); |
c906108c | 6090 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6091 | _("Iterate through updating all remote thread info")); |
c906108c | 6092 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6093 | _(" Remote thread alive test ")); |
c906108c SS |
6094 | } |
6095 | ||
6096 | #endif /* 0 */ | |
6097 | ||
f3fb8c85 MS |
6098 | /* Convert a thread ID to a string. Returns the string in a static |
6099 | buffer. */ | |
6100 | ||
6101 | static char * | |
39f77062 | 6102 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6103 | { |
fd0a2a6f | 6104 | static char buf[32]; |
f3fb8c85 | 6105 | |
32a5b2f1 | 6106 | xsnprintf (buf, sizeof buf, "Thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
6107 | return buf; |
6108 | } | |
6109 | ||
38691318 KB |
6110 | /* Get the address of the thread local variable in OBJFILE which is |
6111 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6112 | ||
6113 | static CORE_ADDR | |
6114 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6115 | { | |
444abaca | 6116 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6117 | { |
6118 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6119 | char *p = rs->buf; |
571dd617 | 6120 | enum packet_result result; |
38691318 KB |
6121 | |
6122 | strcpy (p, "qGetTLSAddr:"); | |
6123 | p += strlen (p); | |
6124 | p += hexnumstr (p, PIDGET (ptid)); | |
6125 | *p++ = ','; | |
6126 | p += hexnumstr (p, offset); | |
6127 | *p++ = ','; | |
6128 | p += hexnumstr (p, lm); | |
6129 | *p++ = '\0'; | |
6130 | ||
6d820c5c DJ |
6131 | putpkt (rs->buf); |
6132 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6133 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6134 | if (result == PACKET_OK) |
38691318 KB |
6135 | { |
6136 | ULONGEST result; | |
6137 | ||
6d820c5c | 6138 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6139 | return result; |
6140 | } | |
571dd617 | 6141 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6142 | throw_error (TLS_GENERIC_ERROR, |
6143 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6144 | else |
109c3e39 AC |
6145 | throw_error (TLS_GENERIC_ERROR, |
6146 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6147 | } |
6148 | else | |
109c3e39 AC |
6149 | throw_error (TLS_GENERIC_ERROR, |
6150 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6151 | /* Not reached. */ |
6152 | return 0; | |
6153 | } | |
6154 | ||
29709017 DJ |
6155 | /* Support for inferring a target description based on the current |
6156 | architecture and the size of a 'g' packet. While the 'g' packet | |
6157 | can have any size (since optional registers can be left off the | |
6158 | end), some sizes are easily recognizable given knowledge of the | |
6159 | approximate architecture. */ | |
6160 | ||
6161 | struct remote_g_packet_guess | |
6162 | { | |
6163 | int bytes; | |
6164 | const struct target_desc *tdesc; | |
6165 | }; | |
6166 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6167 | DEF_VEC_O(remote_g_packet_guess_s); | |
6168 | ||
6169 | struct remote_g_packet_data | |
6170 | { | |
6171 | VEC(remote_g_packet_guess_s) *guesses; | |
6172 | }; | |
6173 | ||
6174 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6175 | ||
6176 | static void * | |
6177 | remote_g_packet_data_init (struct obstack *obstack) | |
6178 | { | |
6179 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6180 | } | |
6181 | ||
6182 | void | |
6183 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6184 | const struct target_desc *tdesc) | |
6185 | { | |
6186 | struct remote_g_packet_data *data | |
6187 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6188 | struct remote_g_packet_guess new_guess, *guess; | |
6189 | int ix; | |
6190 | ||
6191 | gdb_assert (tdesc != NULL); | |
6192 | ||
6193 | for (ix = 0; | |
6194 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6195 | ix++) | |
6196 | if (guess->bytes == bytes) | |
6197 | internal_error (__FILE__, __LINE__, | |
6198 | "Duplicate g packet description added for size %d", | |
6199 | bytes); | |
6200 | ||
6201 | new_guess.bytes = bytes; | |
6202 | new_guess.tdesc = tdesc; | |
6203 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6204 | } | |
6205 | ||
6206 | static const struct target_desc * | |
6207 | remote_read_description (struct target_ops *target) | |
6208 | { | |
6209 | struct remote_g_packet_data *data | |
6210 | = gdbarch_data (current_gdbarch, remote_g_packet_data_handle); | |
6211 | ||
6212 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6213 | { | |
6214 | struct remote_g_packet_guess *guess; | |
6215 | int ix; | |
6216 | int bytes = send_g_packet (); | |
6217 | ||
6218 | for (ix = 0; | |
6219 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6220 | ix++) | |
6221 | if (guess->bytes == bytes) | |
6222 | return guess->tdesc; | |
6223 | ||
6224 | /* We discard the g packet. A minor optimization would be to | |
6225 | hold on to it, and fill the register cache once we have selected | |
6226 | an architecture, but it's too tricky to do safely. */ | |
6227 | } | |
6228 | ||
6229 | return NULL; | |
6230 | } | |
6231 | ||
c906108c | 6232 | static void |
fba45db2 | 6233 | init_remote_ops (void) |
c906108c | 6234 | { |
c5aa993b | 6235 | remote_ops.to_shortname = "remote"; |
c906108c | 6236 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 6237 | remote_ops.to_doc = |
c906108c | 6238 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
6239 | Specify the serial device it is connected to\n\ |
6240 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
6241 | remote_ops.to_open = remote_open; |
6242 | remote_ops.to_close = remote_close; | |
c906108c | 6243 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 6244 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 6245 | remote_ops.to_resume = remote_resume; |
c906108c SS |
6246 | remote_ops.to_wait = remote_wait; |
6247 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
6248 | remote_ops.to_store_registers = remote_store_registers; | |
6249 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6250 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6251 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
6252 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6253 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6254 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
6255 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
6256 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
6257 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6258 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6259 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6260 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
6261 | remote_ops.to_kill = remote_kill; |
6262 | remote_ops.to_load = generic_load; | |
c906108c SS |
6263 | remote_ops.to_mourn_inferior = remote_mourn; |
6264 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 6265 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 6266 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 6267 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 6268 | remote_ops.to_stop = remote_stop; |
4b8a223f | 6269 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6270 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 6271 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 6272 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
6273 | remote_ops.to_has_all_memory = 1; |
6274 | remote_ops.to_has_memory = 1; | |
6275 | remote_ops.to_has_stack = 1; | |
6276 | remote_ops.to_has_registers = 1; | |
6277 | remote_ops.to_has_execution = 1; | |
6278 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6279 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 6280 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6281 | remote_ops.to_flash_erase = remote_flash_erase; |
6282 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 6283 | remote_ops.to_read_description = remote_read_description; |
c906108c SS |
6284 | } |
6285 | ||
6286 | /* Set up the extended remote vector by making a copy of the standard | |
6287 | remote vector and adding to it. */ | |
6288 | ||
6289 | static void | |
fba45db2 | 6290 | init_extended_remote_ops (void) |
c906108c SS |
6291 | { |
6292 | extended_remote_ops = remote_ops; | |
6293 | ||
0f71a2f6 | 6294 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 6295 | extended_remote_ops.to_longname = |
c906108c | 6296 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 6297 | extended_remote_ops.to_doc = |
c906108c SS |
6298 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6299 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6300 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
6301 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
6302 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
6303 | } |
6304 | ||
6426a772 JM |
6305 | static int |
6306 | remote_can_async_p (void) | |
6307 | { | |
23860348 | 6308 | /* We're async whenever the serial device is. */ |
2cd58942 | 6309 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
6310 | } |
6311 | ||
6312 | static int | |
6313 | remote_is_async_p (void) | |
6314 | { | |
23860348 | 6315 | /* We're async whenever the serial device is. */ |
2cd58942 | 6316 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
6317 | } |
6318 | ||
2acceee2 JM |
6319 | /* Pass the SERIAL event on and up to the client. One day this code |
6320 | will be able to delay notifying the client of an event until the | |
23860348 | 6321 | point where an entire packet has been received. */ |
2acceee2 | 6322 | |
2bc416ba | 6323 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 6324 | void *context); |
2acceee2 JM |
6325 | static void *async_client_context; |
6326 | static serial_event_ftype remote_async_serial_handler; | |
6327 | ||
6426a772 | 6328 | static void |
819cc324 | 6329 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 6330 | { |
2acceee2 JM |
6331 | /* Don't propogate error information up to the client. Instead let |
6332 | the client find out about the error by querying the target. */ | |
6333 | async_client_callback (INF_REG_EVENT, async_client_context); | |
6334 | } | |
6335 | ||
6336 | static void | |
2bc416ba | 6337 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 6338 | void *context), void *context) |
2acceee2 | 6339 | { |
ed9a39eb | 6340 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 6341 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6342 | _("Calling remote_async when async is masked")); |
ed9a39eb | 6343 | |
2acceee2 JM |
6344 | if (callback != NULL) |
6345 | { | |
2cd58942 | 6346 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
6347 | async_client_callback = callback; |
6348 | async_client_context = context; | |
6349 | } | |
6350 | else | |
2cd58942 | 6351 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
6352 | } |
6353 | ||
43ff13b4 JM |
6354 | /* Target async and target extended-async. |
6355 | ||
6356 | This are temporary targets, until it is all tested. Eventually | |
6357 | async support will be incorporated int the usual 'remote' | |
23860348 | 6358 | target. */ |
43ff13b4 JM |
6359 | |
6360 | static void | |
c2d11a7d | 6361 | init_remote_async_ops (void) |
43ff13b4 JM |
6362 | { |
6363 | remote_async_ops.to_shortname = "async"; | |
2bc416ba | 6364 | remote_async_ops.to_longname = |
23860348 | 6365 | "Remote serial target in async version of the gdb-specific protocol"; |
c5aa993b | 6366 | remote_async_ops.to_doc = |
43ff13b4 JM |
6367 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6368 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
6369 | remote_async_ops.to_open = remote_async_open; |
6370 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
6371 | remote_async_ops.to_detach = remote_detach; |
6372 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
6373 | remote_async_ops.to_resume = remote_async_resume; |
6374 | remote_async_ops.to_wait = remote_async_wait; | |
6375 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
6376 | remote_async_ops.to_store_registers = remote_store_registers; | |
6377 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6378 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6379 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
6380 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6381 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6382 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
6383 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6384 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6385 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6386 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
6387 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
6388 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
6389 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
6390 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
6391 | remote_async_ops.to_kill = remote_async_kill; |
6392 | remote_async_ops.to_load = generic_load; | |
53a5351d | 6393 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
6394 | remote_async_ops.to_thread_alive = remote_thread_alive; |
6395 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
6396 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
6397 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 6398 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 6399 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6400 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
6401 | remote_async_ops.to_stratum = process_stratum; |
6402 | remote_async_ops.to_has_all_memory = 1; | |
6403 | remote_async_ops.to_has_memory = 1; | |
6404 | remote_async_ops.to_has_stack = 1; | |
6405 | remote_async_ops.to_has_registers = 1; | |
6406 | remote_async_ops.to_has_execution = 1; | |
6407 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
6408 | remote_async_ops.to_can_async_p = remote_can_async_p; |
6409 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
6410 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 6411 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 6412 | remote_async_ops.to_magic = OPS_MAGIC; |
fd79ecee | 6413 | remote_async_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6414 | remote_async_ops.to_flash_erase = remote_flash_erase; |
6415 | remote_async_ops.to_flash_done = remote_flash_done; | |
29709017 | 6416 | remote_ops.to_read_description = remote_read_description; |
43ff13b4 JM |
6417 | } |
6418 | ||
6419 | /* Set up the async extended remote vector by making a copy of the standard | |
6420 | remote vector and adding to it. */ | |
6421 | ||
6422 | static void | |
c2d11a7d | 6423 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
6424 | { |
6425 | extended_async_remote_ops = remote_async_ops; | |
6426 | ||
6427 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 6428 | extended_async_remote_ops.to_longname = |
43ff13b4 | 6429 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 6430 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
6431 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
6432 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6433 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
6434 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6435 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6436 | } | |
6437 | ||
5a2468f5 | 6438 | static void |
c2d11a7d | 6439 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6440 | { |
427c3a89 | 6441 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
6442 | } |
6443 | ||
d471ea57 AC |
6444 | static void |
6445 | show_remote_cmd (char *args, int from_tty) | |
6446 | { | |
37a105a1 | 6447 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 6448 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
6449 | struct cleanup *showlist_chain; |
6450 | struct cmd_list_element *list = remote_show_cmdlist; | |
6451 | ||
6452 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
6453 | for (; list != NULL; list = list->next) | |
6454 | if (strcmp (list->name, "Z-packet") == 0) | |
6455 | continue; | |
427c3a89 DJ |
6456 | else if (list->type == not_set_cmd) |
6457 | /* Alias commands are exactly like the original, except they | |
6458 | don't have the normal type. */ | |
6459 | continue; | |
6460 | else | |
37a105a1 DJ |
6461 | { |
6462 | struct cleanup *option_chain | |
6463 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
6464 | ui_out_field_string (uiout, "name", list->name); | |
6465 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
6466 | if (list->type == show_cmd) |
6467 | do_setshow_command ((char *) NULL, from_tty, list); | |
6468 | else | |
6469 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
6470 | /* Close the tuple. */ |
6471 | do_cleanups (option_chain); | |
6472 | } | |
427c3a89 DJ |
6473 | |
6474 | /* Close the tuple. */ | |
6475 | do_cleanups (showlist_chain); | |
d471ea57 | 6476 | } |
5a2468f5 | 6477 | |
0f71a2f6 | 6478 | static void |
fba45db2 | 6479 | build_remote_gdbarch_data (void) |
0f71a2f6 | 6480 | { |
17a912b6 | 6481 | remote_address_size = gdbarch_addr_bit (current_gdbarch); |
0f71a2f6 JM |
6482 | } |
6483 | ||
23860348 | 6484 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
6485 | static void |
6486 | remote_new_objfile (struct objfile *objfile) | |
6487 | { | |
23860348 | 6488 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 6489 | remote_check_symbols (objfile); |
dc8acb97 MS |
6490 | } |
6491 | ||
c906108c | 6492 | void |
fba45db2 | 6493 | _initialize_remote (void) |
c906108c | 6494 | { |
ea9c271d DJ |
6495 | struct remote_state *rs; |
6496 | ||
0f71a2f6 | 6497 | /* architecture specific data */ |
2bc416ba | 6498 | remote_gdbarch_data_handle = |
23860348 | 6499 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
6500 | remote_g_packet_data_handle = |
6501 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 AC |
6502 | |
6503 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
6504 | that the remote protocol has been initialized. */ | |
046a4708 AC |
6505 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
6506 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 6507 | |
ea9c271d DJ |
6508 | /* Initialize the per-target state. At the moment there is only one |
6509 | of these, not one per target. Only one target is active at a | |
6510 | time. The default buffer size is unimportant; it will be expanded | |
6511 | whenever a larger buffer is needed. */ | |
0b83947e | 6512 | rs = get_remote_state_raw (); |
ea9c271d DJ |
6513 | rs->buf_size = 400; |
6514 | rs->buf = xmalloc (rs->buf_size); | |
6515 | ||
c906108c SS |
6516 | init_remote_ops (); |
6517 | add_target (&remote_ops); | |
6518 | ||
6519 | init_extended_remote_ops (); | |
6520 | add_target (&extended_remote_ops); | |
cce74817 | 6521 | |
43ff13b4 JM |
6522 | init_remote_async_ops (); |
6523 | add_target (&remote_async_ops); | |
6524 | ||
6525 | init_extended_async_remote_ops (); | |
6526 | add_target (&extended_async_remote_ops); | |
6527 | ||
dc8acb97 | 6528 | /* Hook into new objfile notification. */ |
06d3b283 | 6529 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 6530 | |
c906108c SS |
6531 | #if 0 |
6532 | init_remote_threadtests (); | |
6533 | #endif | |
6534 | ||
23860348 | 6535 | /* set/show remote ... */ |
d471ea57 | 6536 | |
1bedd215 | 6537 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
6538 | Remote protocol specific variables\n\ |
6539 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6540 | the packets being used"), |
cff3e48b | 6541 | &remote_set_cmdlist, "set remote ", |
23860348 | 6542 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 6543 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
6544 | Remote protocol specific variables\n\ |
6545 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6546 | the packets being used"), |
cff3e48b | 6547 | &remote_show_cmdlist, "show remote ", |
23860348 | 6548 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 6549 | |
1a966eab AC |
6550 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
6551 | Compare section data on target to the exec file.\n\ | |
6552 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
6553 | &cmdlist); |
6554 | ||
1a966eab AC |
6555 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
6556 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
6557 | maintenance packet TEXT\n\ |
6558 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6559 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6560 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 6561 | terminating `#' character and checksum."), |
c906108c SS |
6562 | &maintenancelist); |
6563 | ||
7915a72c AC |
6564 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
6565 | Set whether to send break if interrupted."), _("\ | |
6566 | Show whether to send break if interrupted."), _("\ | |
6567 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 6568 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 6569 | &setlist, &showlist); |
c906108c | 6570 | |
23860348 | 6571 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 6572 | |
1a966eab AC |
6573 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
6574 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 6575 | &setlist); |
1a966eab AC |
6576 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
6577 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
6578 | &showlist); |
6579 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
6580 | set_memory_write_packet_size, _("\ |
6581 | Set the maximum number of bytes per memory-write packet.\n\ | |
6582 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6583 | default packet size. The actual limit is further reduced\n\ | |
6584 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6585 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6586 | &remote_set_cmdlist); |
6587 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
6588 | set_memory_read_packet_size, _("\ |
6589 | Set the maximum number of bytes per memory-read packet.\n\ | |
6590 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6591 | default packet size. The actual limit is further reduced\n\ | |
6592 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6593 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6594 | &remote_set_cmdlist); |
6595 | add_cmd ("memory-write-packet-size", no_class, | |
6596 | show_memory_write_packet_size, | |
1a966eab | 6597 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
6598 | &remote_show_cmdlist); |
6599 | add_cmd ("memory-read-packet-size", no_class, | |
6600 | show_memory_read_packet_size, | |
1a966eab | 6601 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 6602 | &remote_show_cmdlist); |
c906108c | 6603 | |
b3f42336 | 6604 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
6605 | &remote_hw_watchpoint_limit, _("\ |
6606 | Set the maximum number of target hardware watchpoints."), _("\ | |
6607 | Show the maximum number of target hardware watchpoints."), _("\ | |
6608 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6609 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
6610 | &remote_set_cmdlist, &remote_show_cmdlist); |
6611 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
6612 | &remote_hw_breakpoint_limit, _("\ |
6613 | Set the maximum number of target hardware breakpoints."), _("\ | |
6614 | Show the maximum number of target hardware breakpoints."), _("\ | |
6615 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6616 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 6617 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 6618 | |
4d28ad1e AC |
6619 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
6620 | &remote_address_size, _("\ | |
6621 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
6622 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
6623 | NULL, | |
6624 | NULL, /* FIXME: i18n: */ | |
6625 | &setlist, &showlist); | |
c906108c | 6626 | |
444abaca | 6627 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 6628 | "X", "binary-download", 1); |
0f71a2f6 | 6629 | |
444abaca | 6630 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 6631 | "vCont", "verbose-resume", 0); |
506fb367 | 6632 | |
89be2091 DJ |
6633 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
6634 | "QPassSignals", "pass-signals", 0); | |
6635 | ||
444abaca | 6636 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 6637 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 6638 | |
444abaca | 6639 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 6640 | "P", "set-register", 1); |
d471ea57 | 6641 | |
444abaca | 6642 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 6643 | "p", "fetch-register", 1); |
b96ec7ac | 6644 | |
444abaca | 6645 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 6646 | "Z0", "software-breakpoint", 0); |
d471ea57 | 6647 | |
444abaca | 6648 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 6649 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 6650 | |
444abaca | 6651 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 6652 | "Z2", "write-watchpoint", 0); |
d471ea57 | 6653 | |
444abaca | 6654 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 6655 | "Z3", "read-watchpoint", 0); |
d471ea57 | 6656 | |
444abaca | 6657 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 6658 | "Z4", "access-watchpoint", 0); |
d471ea57 | 6659 | |
0876f84a DJ |
6660 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
6661 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 6662 | |
23181151 DJ |
6663 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
6664 | "qXfer:features:read", "target-features", 0); | |
6665 | ||
fd79ecee DJ |
6666 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
6667 | "qXfer:memory-map:read", "memory-map", 0); | |
6668 | ||
0e7f50da UW |
6669 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
6670 | "qXfer:spu:read", "read-spu-object", 0); | |
6671 | ||
6672 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
6673 | "qXfer:spu:write", "write-spu-object", 0); | |
6674 | ||
444abaca | 6675 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 6676 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
6677 | 0); |
6678 | ||
be2a5f71 DJ |
6679 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
6680 | "qSupported", "supported-packets", 0); | |
6681 | ||
37a105a1 DJ |
6682 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
6683 | Z sub-packet has its own set and show commands, but users may | |
6684 | have sets to this variable in their .gdbinit files (or in their | |
6685 | documentation). */ | |
e9e68a56 | 6686 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
6687 | &remote_Z_packet_detect, _("\ |
6688 | Set use of remote protocol `Z' packets"), _("\ | |
6689 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 6690 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 6691 | packets."), |
e9e68a56 | 6692 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 6693 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 6694 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
6695 | |
6696 | /* Eventually initialize fileio. See fileio.c */ | |
6697 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 6698 | } |