Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c AC |
2 | |
3 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, | |
4 | 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b JM |
6 | This file is part of GDB. |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c5aa993b | 22 | |
96baa820 | 23 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 24 | |
c906108c SS |
25 | #include "defs.h" |
26 | #include "gdb_string.h" | |
27 | #include <ctype.h> | |
28 | #include <fcntl.h> | |
c906108c SS |
29 | #include "inferior.h" |
30 | #include "bfd.h" | |
31 | #include "symfile.h" | |
32 | #include "target.h" | |
c5aa993b | 33 | /*#include "terminal.h" */ |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "objfiles.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "gdbthread.h" | |
c2c6d25f | 38 | #include "remote.h" |
4e052eda | 39 | #include "regcache.h" |
fd0407d6 | 40 | #include "value.h" |
1ff9c3d6 | 41 | #include "gdb_assert.h" |
c906108c | 42 | |
7a292a7a | 43 | #include <ctype.h> |
9846de1b | 44 | #include <sys/time.h> |
c906108c SS |
45 | #ifdef USG |
46 | #include <sys/types.h> | |
47 | #endif | |
48 | ||
43ff13b4 | 49 | #include "event-loop.h" |
c2c6d25f | 50 | #include "event-top.h" |
2acceee2 | 51 | #include "inf-loop.h" |
43ff13b4 | 52 | |
c906108c SS |
53 | #include <signal.h> |
54 | #include "serial.h" | |
55 | ||
6240bebf MS |
56 | #include "gdbcore.h" /* for exec_bfd */ |
57 | ||
449092f6 CV |
58 | #include "remote-fileio.h" |
59 | ||
c906108c | 60 | /* Prototypes for local functions */ |
6426a772 JM |
61 | static void cleanup_sigint_signal_handler (void *dummy); |
62 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 63 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 64 | |
a14ed312 KB |
65 | static void handle_remote_sigint (int); |
66 | static void handle_remote_sigint_twice (int); | |
67 | static void async_remote_interrupt (gdb_client_data); | |
68 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 69 | |
a14ed312 | 70 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 71 | |
a14ed312 | 72 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 73 | |
a14ed312 KB |
74 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
75 | int len, int should_write, | |
29e57380 | 76 | struct mem_attrib *attrib, |
a14ed312 | 77 | struct target_ops *target); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_prepare_to_store (void); |
c906108c | 80 | |
a14ed312 | 81 | static void remote_fetch_registers (int regno); |
c906108c | 82 | |
39f77062 KB |
83 | static void remote_resume (ptid_t ptid, int step, |
84 | enum target_signal siggnal); | |
85 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 86 | enum target_signal siggnal); |
36918e70 | 87 | static int remote_start_remote (struct ui_out *uiout, void *dummy); |
c906108c | 88 | |
a14ed312 KB |
89 | static void remote_open (char *name, int from_tty); |
90 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 91 | |
a14ed312 KB |
92 | static void extended_remote_open (char *name, int from_tty); |
93 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 94 | |
92d1e331 DJ |
95 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
96 | int async_p); | |
c906108c | 97 | |
a14ed312 | 98 | static void remote_close (int quitting); |
c906108c | 99 | |
a14ed312 | 100 | static void remote_store_registers (int regno); |
c906108c | 101 | |
a14ed312 KB |
102 | static void remote_mourn (void); |
103 | static void remote_async_mourn (void); | |
c906108c | 104 | |
a14ed312 | 105 | static void extended_remote_restart (void); |
c906108c | 106 | |
a14ed312 | 107 | static void extended_remote_mourn (void); |
c906108c | 108 | |
a14ed312 KB |
109 | static void extended_remote_create_inferior (char *, char *, char **); |
110 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 111 | |
a14ed312 | 112 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 113 | |
c2d11a7d | 114 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 115 | |
a14ed312 | 116 | static int readchar (int timeout); |
c906108c | 117 | |
39f77062 KB |
118 | static ptid_t remote_wait (ptid_t ptid, |
119 | struct target_waitstatus *status); | |
120 | static ptid_t remote_async_wait (ptid_t ptid, | |
121 | struct target_waitstatus *status); | |
c906108c | 122 | |
a14ed312 KB |
123 | static void remote_kill (void); |
124 | static void remote_async_kill (void); | |
c906108c | 125 | |
a14ed312 | 126 | static int tohex (int nib); |
c906108c | 127 | |
a14ed312 | 128 | static void remote_detach (char *args, int from_tty); |
c906108c | 129 | |
a14ed312 | 130 | static void remote_interrupt (int signo); |
c906108c | 131 | |
a14ed312 | 132 | static void remote_interrupt_twice (int signo); |
7a292a7a | 133 | |
a14ed312 | 134 | static void interrupt_query (void); |
c906108c | 135 | |
a14ed312 | 136 | static void set_thread (int, int); |
c906108c | 137 | |
39f77062 | 138 | static int remote_thread_alive (ptid_t); |
c906108c | 139 | |
a14ed312 | 140 | static void get_offsets (void); |
c906108c | 141 | |
c2d11a7d | 142 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 143 | |
a14ed312 | 144 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 145 | |
a14ed312 | 146 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 147 | |
a14ed312 | 148 | static int hexnumlen (ULONGEST num); |
c906108c | 149 | |
a14ed312 | 150 | static void init_remote_ops (void); |
c906108c | 151 | |
a14ed312 | 152 | static void init_extended_remote_ops (void); |
c906108c | 153 | |
a14ed312 | 154 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
155 | |
156 | static struct target_ops remote_cisco_ops; | |
157 | ||
a14ed312 | 158 | static void remote_stop (void); |
c906108c | 159 | |
a14ed312 | 160 | static int ishex (int ch, int *val); |
c906108c | 161 | |
a14ed312 | 162 | static int stubhex (int ch); |
c906108c | 163 | |
a14ed312 | 164 | static int remote_query (int /*char */ , char *, char *, int *); |
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 | |
dc8acb97 | 190 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 191 | |
dc8acb97 | 192 | static int bin2hex (const char *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 | |
a14ed312 | 204 | void _initialize_remote (void); |
c906108c | 205 | |
694f61fb | 206 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
207 | target is open()ed, remote.c should create a per-target description |
208 | of the remote protocol using that target's architecture. | |
209 | Unfortunatly, the target stack doesn't include local state. For | |
210 | the moment keep the information in the target's architecture | |
211 | object. Sigh.. */ | |
212 | ||
ad10f812 AC |
213 | struct packet_reg |
214 | { | |
215 | long offset; /* Offset into G packet. */ | |
216 | long regnum; /* GDB's internal register number. */ | |
217 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 218 | int in_g_packet; /* Always part of G packet. */ |
12c266ea | 219 | /* long size in bytes; == DEPRECATED_REGISTER_RAW_SIZE (regnum); at present. */ |
ad10f812 AC |
220 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
221 | }; | |
222 | ||
d01949b6 AC |
223 | struct remote_state |
224 | { | |
ad10f812 AC |
225 | /* Description of the remote protocol registers. */ |
226 | long sizeof_g_packet; | |
b323314b AC |
227 | |
228 | /* Description of the remote protocol registers indexed by REGNUM | |
229 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
230 | struct packet_reg *regs; | |
ad10f812 | 231 | |
d01949b6 AC |
232 | /* This is the size (in chars) of the first response to the ``g'' |
233 | packet. It is used as a heuristic when determining the maximum | |
234 | size of memory-read and memory-write packets. A target will | |
235 | typically only reserve a buffer large enough to hold the ``g'' | |
236 | packet. The size does not include packet overhead (headers and | |
237 | trailers). */ | |
238 | long actual_register_packet_size; | |
239 | ||
240 | /* This is the maximum size (in chars) of a non read/write packet. | |
241 | It is also used as a cap on the size of read/write packets. */ | |
242 | long remote_packet_size; | |
243 | }; | |
244 | ||
3c3bea1c | 245 | |
d01949b6 AC |
246 | /* Handle for retreving the remote protocol data from gdbarch. */ |
247 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
248 | ||
249 | static struct remote_state * | |
5ae5f592 | 250 | get_remote_state (void) |
d01949b6 | 251 | { |
451fbdda | 252 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
253 | } |
254 | ||
255 | static void * | |
256 | init_remote_state (struct gdbarch *gdbarch) | |
257 | { | |
258 | int regnum; | |
e5e78edc | 259 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state); |
d01949b6 | 260 | |
7d58c67d TR |
261 | if (DEPRECATED_REGISTER_BYTES != 0) |
262 | rs->sizeof_g_packet = DEPRECATED_REGISTER_BYTES; | |
263 | else | |
264 | rs->sizeof_g_packet = 0; | |
ad10f812 | 265 | |
b323314b | 266 | /* Assume a 1:1 regnum<->pnum table. */ |
e5e78edc AC |
267 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
268 | struct packet_reg); | |
b323314b | 269 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 270 | { |
b323314b AC |
271 | struct packet_reg *r = &rs->regs[regnum]; |
272 | r->pnum = regnum; | |
273 | r->regnum = regnum; | |
62700349 | 274 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 275 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 276 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d TR |
277 | |
278 | /* Compute packet size by accumulating the size of all registers. */ | |
279 | if (DEPRECATED_REGISTER_BYTES == 0) | |
280 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); | |
ad10f812 AC |
281 | } |
282 | ||
d01949b6 AC |
283 | /* Default maximum number of characters in a packet body. Many |
284 | remote stubs have a hardwired buffer size of 400 bytes | |
285 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
286 | as the maximum packet-size to ensure that the packet and an extra | |
287 | NUL character can always fit in the buffer. This stops GDB | |
288 | trashing stubs that try to squeeze an extra NUL into what is | |
289 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
290 | rs->remote_packet_size = 400 - 1; | |
291 | ||
ad10f812 AC |
292 | /* Should rs->sizeof_g_packet needs more space than the |
293 | default, adjust the size accordingly. Remember that each byte is | |
294 | encoded as two characters. 32 is the overhead for the packet | |
295 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 AC |
296 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
297 | little. */ | |
ad10f812 AC |
298 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
299 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
d01949b6 AC |
300 | |
301 | /* This one is filled in when a ``g'' packet is received. */ | |
302 | rs->actual_register_packet_size = 0; | |
303 | ||
304 | return rs; | |
305 | } | |
306 | ||
ad10f812 AC |
307 | static struct packet_reg * |
308 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
309 | { | |
b323314b AC |
310 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
311 | return NULL; | |
312 | else | |
ad10f812 | 313 | { |
b323314b AC |
314 | struct packet_reg *r = &rs->regs[regnum]; |
315 | gdb_assert (r->regnum == regnum); | |
316 | return r; | |
ad10f812 | 317 | } |
ad10f812 AC |
318 | } |
319 | ||
320 | static struct packet_reg * | |
321 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
322 | { | |
b323314b AC |
323 | int i; |
324 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 325 | { |
b323314b AC |
326 | struct packet_reg *r = &rs->regs[i]; |
327 | if (r->pnum == pnum) | |
328 | return r; | |
ad10f812 AC |
329 | } |
330 | return NULL; | |
d01949b6 AC |
331 | } |
332 | ||
3c3bea1c GS |
333 | /* FIXME: graces/2002-08-08: These variables should eventually be |
334 | bound to an instance of the target object (as in gdbarch-tdep()), | |
335 | when such a thing exists. */ | |
336 | ||
337 | /* This is set to the data address of the access causing the target | |
338 | to stop for a watchpoint. */ | |
339 | static CORE_ADDR remote_watch_data_address; | |
340 | ||
341 | /* This is non-zero if taregt stopped for a watchpoint. */ | |
342 | static int remote_stopped_by_watchpoint_p; | |
343 | ||
c906108c SS |
344 | |
345 | static struct target_ops remote_ops; | |
346 | ||
347 | static struct target_ops extended_remote_ops; | |
348 | ||
43ff13b4 JM |
349 | /* Temporary target ops. Just like the remote_ops and |
350 | extended_remote_ops, but with asynchronous support. */ | |
351 | static struct target_ops remote_async_ops; | |
352 | ||
353 | static struct target_ops extended_async_remote_ops; | |
354 | ||
6426a772 JM |
355 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
356 | ``forever'' still use the normal timeout mechanism. This is | |
357 | currently used by the ASYNC code to guarentee that target reads | |
358 | during the initial connect always time-out. Once getpkt has been | |
359 | modified to return a timeout indication and, in turn | |
360 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
361 | this can go away. */ | |
362 | static int wait_forever_enabled_p = 1; | |
363 | ||
364 | ||
c906108c SS |
365 | /* This variable chooses whether to send a ^C or a break when the user |
366 | requests program interruption. Although ^C is usually what remote | |
367 | systems expect, and that is the default here, sometimes a break is | |
368 | preferable instead. */ | |
369 | ||
370 | static int remote_break; | |
371 | ||
c906108c SS |
372 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
373 | remote_open knows that we don't have a file open when the program | |
374 | starts. */ | |
819cc324 | 375 | static struct serial *remote_desc = NULL; |
c906108c | 376 | |
0f71a2f6 JM |
377 | /* This is set by the target (thru the 'S' message) |
378 | to denote that the target is in kernel mode. */ | |
379 | static int cisco_kernel_mode = 0; | |
380 | ||
c906108c SS |
381 | /* This variable sets the number of bits in an address that are to be |
382 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
383 | leading zeros, the entire address would be sent. This variable | |
384 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
385 | initial implementation of remote.c restricted the address sent in | |
386 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
387 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
388 | address was never sent. Since fixing this bug may cause a break in | |
389 | some remote targets this variable is principly provided to | |
390 | facilitate backward compatibility. */ | |
391 | ||
392 | static int remote_address_size; | |
393 | ||
6426a772 JM |
394 | /* Tempoary to track who currently owns the terminal. See |
395 | target_async_terminal_* for more details. */ | |
396 | ||
397 | static int remote_async_terminal_ours_p; | |
398 | ||
11cf8741 | 399 | \f |
11cf8741 | 400 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
401 | memory read/write packet. MIN ((rs->remote_packet_size), |
402 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
403 | values (fifo overruns, et.al.) and some users need larger values | |
404 | (speed up transfers). The variables ``preferred_*'' (the user | |
405 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
406 | (Positive - a soft limit, negative - a hard limit). */ | |
11cf8741 JM |
407 | |
408 | struct memory_packet_config | |
409 | { | |
410 | char *name; | |
411 | long size; | |
412 | int fixed_p; | |
413 | }; | |
414 | ||
415 | /* Compute the current size of a read/write packet. Since this makes | |
416 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
417 | ||
418 | static long | |
419 | get_memory_packet_size (struct memory_packet_config *config) | |
420 | { | |
d01949b6 | 421 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
422 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
423 | law?) that some hosts don't cope very well with large alloca() | |
424 | calls. Eventually the alloca() code will be replaced by calls to | |
425 | xmalloc() and make_cleanups() allowing this restriction to either | |
426 | be lifted or removed. */ | |
427 | #ifndef MAX_REMOTE_PACKET_SIZE | |
428 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
429 | #endif | |
430 | /* NOTE: 16 is just chosen at random. */ | |
431 | #ifndef MIN_REMOTE_PACKET_SIZE | |
432 | #define MIN_REMOTE_PACKET_SIZE 16 | |
433 | #endif | |
434 | long what_they_get; | |
435 | if (config->fixed_p) | |
436 | { | |
437 | if (config->size <= 0) | |
438 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
439 | else | |
440 | what_they_get = config->size; | |
441 | } | |
442 | else | |
443 | { | |
d01949b6 | 444 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
445 | /* Limit the packet to the size specified by the user. */ |
446 | if (config->size > 0 | |
447 | && what_they_get > config->size) | |
448 | what_they_get = config->size; | |
449 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
450 | if ((rs->actual_register_packet_size) > 0 |
451 | && what_they_get > (rs->actual_register_packet_size)) | |
452 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
453 | } |
454 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
455 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
456 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
457 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
458 | return what_they_get; | |
459 | } | |
460 | ||
461 | /* Update the size of a read/write packet. If they user wants | |
462 | something really big then do a sanity check. */ | |
463 | ||
464 | static void | |
465 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
466 | { | |
467 | int fixed_p = config->fixed_p; | |
468 | long size = config->size; | |
469 | if (args == NULL) | |
470 | error ("Argument required (integer, `fixed' or `limited')."); | |
471 | else if (strcmp (args, "hard") == 0 | |
472 | || strcmp (args, "fixed") == 0) | |
473 | fixed_p = 1; | |
474 | else if (strcmp (args, "soft") == 0 | |
475 | || strcmp (args, "limit") == 0) | |
476 | fixed_p = 0; | |
477 | else | |
478 | { | |
479 | char *end; | |
480 | size = strtoul (args, &end, 0); | |
481 | if (args == end) | |
482 | error ("Invalid %s (bad syntax).", config->name); | |
483 | #if 0 | |
484 | /* Instead of explicitly capping the size of a packet to | |
485 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
486 | instead allowed to set the size to something arbitrarily | |
487 | large. */ | |
488 | if (size > MAX_REMOTE_PACKET_SIZE) | |
489 | error ("Invalid %s (too large).", config->name); | |
490 | #endif | |
491 | } | |
492 | /* Extra checks? */ | |
493 | if (fixed_p && !config->fixed_p) | |
494 | { | |
495 | if (! query ("The target may not be able to correctly handle a %s\n" | |
496 | "of %ld bytes. Change the packet size? ", | |
497 | config->name, size)) | |
498 | error ("Packet size not changed."); | |
499 | } | |
500 | /* Update the config. */ | |
501 | config->fixed_p = fixed_p; | |
502 | config->size = size; | |
503 | } | |
504 | ||
505 | static void | |
506 | show_memory_packet_size (struct memory_packet_config *config) | |
507 | { | |
508 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
509 | if (config->fixed_p) | |
510 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
511 | get_memory_packet_size (config)); | |
512 | else | |
513 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
514 | get_memory_packet_size (config)); | |
515 | } | |
516 | ||
517 | static struct memory_packet_config memory_write_packet_config = | |
518 | { | |
519 | "memory-write-packet-size", | |
520 | }; | |
521 | ||
522 | static void | |
523 | set_memory_write_packet_size (char *args, int from_tty) | |
524 | { | |
525 | set_memory_packet_size (args, &memory_write_packet_config); | |
526 | } | |
527 | ||
528 | static void | |
529 | show_memory_write_packet_size (char *args, int from_tty) | |
530 | { | |
531 | show_memory_packet_size (&memory_write_packet_config); | |
532 | } | |
533 | ||
534 | static long | |
535 | get_memory_write_packet_size (void) | |
536 | { | |
537 | return get_memory_packet_size (&memory_write_packet_config); | |
538 | } | |
539 | ||
540 | static struct memory_packet_config memory_read_packet_config = | |
541 | { | |
542 | "memory-read-packet-size", | |
543 | }; | |
544 | ||
545 | static void | |
546 | set_memory_read_packet_size (char *args, int from_tty) | |
547 | { | |
548 | set_memory_packet_size (args, &memory_read_packet_config); | |
549 | } | |
550 | ||
551 | static void | |
552 | show_memory_read_packet_size (char *args, int from_tty) | |
553 | { | |
554 | show_memory_packet_size (&memory_read_packet_config); | |
555 | } | |
556 | ||
557 | static long | |
558 | get_memory_read_packet_size (void) | |
559 | { | |
d01949b6 | 560 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
561 | long size = get_memory_packet_size (&memory_read_packet_config); |
562 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
563 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
564 | increased beyond (rs->remote_packet_size). */ |
565 | if (size > (rs->remote_packet_size)) | |
566 | size = (rs->remote_packet_size); | |
11cf8741 JM |
567 | return size; |
568 | } | |
569 | ||
11cf8741 | 570 | \f |
5a2468f5 JM |
571 | /* Generic configuration support for packets the stub optionally |
572 | supports. Allows the user to specify the use of the packet as well | |
573 | as allowing GDB to auto-detect support in the remote stub. */ | |
574 | ||
575 | enum packet_support | |
576 | { | |
577 | PACKET_SUPPORT_UNKNOWN = 0, | |
578 | PACKET_ENABLE, | |
579 | PACKET_DISABLE | |
580 | }; | |
581 | ||
5a2468f5 JM |
582 | struct packet_config |
583 | { | |
5a2468f5 JM |
584 | char *name; |
585 | char *title; | |
7f19b9a2 | 586 | enum auto_boolean detect; |
5a2468f5 JM |
587 | enum packet_support support; |
588 | }; | |
589 | ||
d471ea57 AC |
590 | /* Analyze a packet's return value and update the packet config |
591 | accordingly. */ | |
592 | ||
593 | enum packet_result | |
594 | { | |
595 | PACKET_ERROR, | |
596 | PACKET_OK, | |
597 | PACKET_UNKNOWN | |
598 | }; | |
599 | ||
5a2468f5 | 600 | static void |
d471ea57 | 601 | update_packet_config (struct packet_config *config) |
5a2468f5 | 602 | { |
d471ea57 AC |
603 | switch (config->detect) |
604 | { | |
7f19b9a2 | 605 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
606 | config->support = PACKET_ENABLE; |
607 | break; | |
7f19b9a2 | 608 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
609 | config->support = PACKET_DISABLE; |
610 | break; | |
7f19b9a2 | 611 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
612 | config->support = PACKET_SUPPORT_UNKNOWN; |
613 | break; | |
614 | } | |
5a2468f5 JM |
615 | } |
616 | ||
617 | static void | |
fba45db2 | 618 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
619 | { |
620 | char *support = "internal-error"; | |
621 | switch (config->support) | |
622 | { | |
623 | case PACKET_ENABLE: | |
624 | support = "enabled"; | |
625 | break; | |
626 | case PACKET_DISABLE: | |
627 | support = "disabled"; | |
628 | break; | |
629 | case PACKET_SUPPORT_UNKNOWN: | |
630 | support = "unknown"; | |
631 | break; | |
632 | } | |
633 | switch (config->detect) | |
634 | { | |
7f19b9a2 | 635 | case AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
636 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
637 | config->name, config->title, support); | |
638 | break; | |
7f19b9a2 AC |
639 | case AUTO_BOOLEAN_TRUE: |
640 | case AUTO_BOOLEAN_FALSE: | |
8e248173 | 641 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", |
5a2468f5 | 642 | config->name, config->title, support); |
8e248173 | 643 | break; |
5a2468f5 JM |
644 | } |
645 | } | |
646 | ||
647 | static void | |
d471ea57 AC |
648 | add_packet_config_cmd (struct packet_config *config, |
649 | char *name, | |
650 | char *title, | |
e9e68a56 AC |
651 | cmd_sfunc_ftype *set_func, |
652 | cmd_sfunc_ftype *show_func, | |
d471ea57 AC |
653 | struct cmd_list_element **set_remote_list, |
654 | struct cmd_list_element **show_remote_list, | |
655 | int legacy) | |
656 | { | |
657 | struct cmd_list_element *set_cmd; | |
658 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
659 | char *set_doc; |
660 | char *show_doc; | |
d471ea57 | 661 | char *cmd_name; |
5a2468f5 JM |
662 | config->name = name; |
663 | config->title = title; | |
7f19b9a2 | 664 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 665 | config->support = PACKET_SUPPORT_UNKNOWN; |
76995688 AC |
666 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
667 | name, title); | |
668 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
669 | name, title); | |
d471ea57 | 670 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 671 | xasprintf (&cmd_name, "%s-packet", title); |
e9e68a56 AC |
672 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
673 | &config->detect, set_doc, show_doc, | |
674 | set_func, show_func, | |
675 | set_remote_list, show_remote_list); | |
d471ea57 AC |
676 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ |
677 | if (legacy) | |
678 | { | |
679 | char *legacy_name; | |
76995688 | 680 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
681 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
682 | set_remote_list); | |
683 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
684 | show_remote_list); | |
685 | } | |
5a2468f5 JM |
686 | } |
687 | ||
d471ea57 AC |
688 | static enum packet_result |
689 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 690 | { |
d471ea57 | 691 | if (buf[0] != '\0') |
5a2468f5 | 692 | { |
d471ea57 AC |
693 | /* The stub recognized the packet request. Check that the |
694 | operation succeeded. */ | |
695 | switch (config->support) | |
696 | { | |
697 | case PACKET_SUPPORT_UNKNOWN: | |
698 | if (remote_debug) | |
699 | fprintf_unfiltered (gdb_stdlog, | |
700 | "Packet %s (%s) is supported\n", | |
701 | config->name, config->title); | |
702 | config->support = PACKET_ENABLE; | |
703 | break; | |
704 | case PACKET_DISABLE: | |
8e65ff28 AC |
705 | internal_error (__FILE__, __LINE__, |
706 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
707 | break; |
708 | case PACKET_ENABLE: | |
709 | break; | |
710 | } | |
711 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
712 | /* "OK" - definitly OK. */ | |
713 | return PACKET_OK; | |
714 | if (buf[0] == 'E' | |
715 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
716 | && buf[3] == '\0') | |
717 | /* "Enn" - definitly an error. */ | |
718 | return PACKET_ERROR; | |
719 | /* The packet may or may not be OK. Just assume it is */ | |
720 | return PACKET_OK; | |
721 | } | |
722 | else | |
723 | { | |
724 | /* The stub does not support the packet. */ | |
725 | switch (config->support) | |
726 | { | |
727 | case PACKET_ENABLE: | |
7f19b9a2 | 728 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 AC |
729 | /* If the stub previously indicated that the packet was |
730 | supported then there is a protocol error.. */ | |
731 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
732 | config->name, config->title); | |
733 | else | |
734 | /* The user set it wrong. */ | |
735 | error ("Enabled packet %s (%s) not recognized by stub", | |
736 | config->name, config->title); | |
737 | break; | |
738 | case PACKET_SUPPORT_UNKNOWN: | |
739 | if (remote_debug) | |
740 | fprintf_unfiltered (gdb_stdlog, | |
741 | "Packet %s (%s) is NOT supported\n", | |
742 | config->name, config->title); | |
743 | config->support = PACKET_DISABLE; | |
744 | break; | |
745 | case PACKET_DISABLE: | |
746 | break; | |
747 | } | |
748 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
749 | } |
750 | } | |
751 | ||
506fb367 DJ |
752 | /* Should we try the 'vCont' (descriptive resume) request? */ |
753 | static struct packet_config remote_protocol_vcont; | |
754 | ||
755 | static void | |
756 | set_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
757 | struct cmd_list_element *c) | |
758 | { | |
759 | update_packet_config (&remote_protocol_vcont); | |
760 | } | |
761 | ||
762 | static void | |
763 | show_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
764 | struct cmd_list_element *c) | |
765 | { | |
766 | show_packet_config_cmd (&remote_protocol_vcont); | |
767 | } | |
768 | ||
dc8acb97 MS |
769 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
770 | static struct packet_config remote_protocol_qSymbol; | |
771 | ||
772 | static void | |
773 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
774 | struct cmd_list_element *c) | |
775 | { | |
776 | update_packet_config (&remote_protocol_qSymbol); | |
777 | } | |
778 | ||
779 | static void | |
e9e68a56 AC |
780 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, |
781 | struct cmd_list_element *c) | |
dc8acb97 MS |
782 | { |
783 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
784 | } | |
785 | ||
44eaed12 C |
786 | /* Should we try the 'e' (step over range) request? */ |
787 | static struct packet_config remote_protocol_e; | |
788 | ||
789 | static void | |
790 | set_remote_protocol_e_packet_cmd (char *args, int from_tty, | |
791 | struct cmd_list_element *c) | |
792 | { | |
793 | update_packet_config (&remote_protocol_e); | |
794 | } | |
795 | ||
796 | static void | |
e9e68a56 AC |
797 | show_remote_protocol_e_packet_cmd (char *args, int from_tty, |
798 | struct cmd_list_element *c) | |
44eaed12 C |
799 | { |
800 | show_packet_config_cmd (&remote_protocol_e); | |
801 | } | |
802 | ||
803 | ||
804 | /* Should we try the 'E' (step over range / w signal #) request? */ | |
805 | static struct packet_config remote_protocol_E; | |
806 | ||
807 | static void | |
808 | set_remote_protocol_E_packet_cmd (char *args, int from_tty, | |
809 | struct cmd_list_element *c) | |
810 | { | |
811 | update_packet_config (&remote_protocol_E); | |
812 | } | |
813 | ||
814 | static void | |
e9e68a56 AC |
815 | show_remote_protocol_E_packet_cmd (char *args, int from_tty, |
816 | struct cmd_list_element *c) | |
44eaed12 C |
817 | { |
818 | show_packet_config_cmd (&remote_protocol_E); | |
819 | } | |
820 | ||
821 | ||
5a2468f5 JM |
822 | /* Should we try the 'P' (set register) request? */ |
823 | ||
824 | static struct packet_config remote_protocol_P; | |
825 | ||
826 | static void | |
fba45db2 KB |
827 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
828 | struct cmd_list_element *c) | |
5a2468f5 | 829 | { |
d471ea57 | 830 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
831 | } |
832 | ||
833 | static void | |
e9e68a56 AC |
834 | show_remote_protocol_P_packet_cmd (char *args, int from_tty, |
835 | struct cmd_list_element *c) | |
5a2468f5 JM |
836 | { |
837 | show_packet_config_cmd (&remote_protocol_P); | |
838 | } | |
839 | ||
d471ea57 AC |
840 | /* Should we try one of the 'Z' requests? */ |
841 | ||
842 | enum Z_packet_type | |
843 | { | |
844 | Z_PACKET_SOFTWARE_BP, | |
845 | Z_PACKET_HARDWARE_BP, | |
846 | Z_PACKET_WRITE_WP, | |
847 | Z_PACKET_READ_WP, | |
848 | Z_PACKET_ACCESS_WP, | |
849 | NR_Z_PACKET_TYPES | |
850 | }; | |
96baa820 | 851 | |
d471ea57 AC |
852 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
853 | ||
854 | /* FIXME: Instead of having all these boiler plate functions, the | |
855 | command callback should include a context argument. */ | |
856 | ||
857 | static void | |
858 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
859 | struct cmd_list_element *c) | |
860 | { | |
861 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
862 | } | |
863 | ||
864 | static void | |
e9e68a56 AC |
865 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, |
866 | struct cmd_list_element *c) | |
d471ea57 AC |
867 | { |
868 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
869 | } | |
870 | ||
871 | static void | |
872 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
873 | struct cmd_list_element *c) | |
874 | { | |
875 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
876 | } | |
877 | ||
878 | static void | |
e9e68a56 AC |
879 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, |
880 | struct cmd_list_element *c) | |
d471ea57 AC |
881 | { |
882 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
883 | } | |
884 | ||
885 | static void | |
886 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
887 | struct cmd_list_element *c) | |
888 | { | |
889 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
890 | } | |
891 | ||
892 | static void | |
e9e68a56 AC |
893 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, |
894 | struct cmd_list_element *c) | |
d471ea57 AC |
895 | { |
896 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
897 | } | |
898 | ||
899 | static void | |
900 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
901 | struct cmd_list_element *c) | |
902 | { | |
903 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
904 | } | |
905 | ||
906 | static void | |
e9e68a56 AC |
907 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, |
908 | struct cmd_list_element *c) | |
d471ea57 AC |
909 | { |
910 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
911 | } | |
912 | ||
913 | static void | |
914 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
915 | struct cmd_list_element *c) | |
916 | { | |
917 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
918 | } | |
919 | ||
920 | static void | |
e9e68a56 AC |
921 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, |
922 | struct cmd_list_element *c) | |
d471ea57 AC |
923 | { |
924 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
925 | } | |
926 | ||
927 | /* For compatibility with older distributions. Provide a ``set remote | |
928 | Z-packet ...'' command that updates all the Z packet types. */ | |
929 | ||
7f19b9a2 | 930 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
931 | |
932 | static void | |
fba45db2 KB |
933 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
934 | struct cmd_list_element *c) | |
96baa820 | 935 | { |
d471ea57 AC |
936 | int i; |
937 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
938 | { | |
939 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
940 | update_packet_config (&remote_protocol_Z[i]); | |
941 | } | |
96baa820 JM |
942 | } |
943 | ||
944 | static void | |
e9e68a56 AC |
945 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
946 | struct cmd_list_element *c) | |
96baa820 | 947 | { |
d471ea57 AC |
948 | int i; |
949 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
950 | { | |
951 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
952 | } | |
96baa820 JM |
953 | } |
954 | ||
955 | /* Should we try the 'X' (remote binary download) packet? | |
956 | ||
957 | This variable (available to the user via "set remote X-packet") | |
958 | dictates whether downloads are sent in binary (via the 'X' packet). | |
959 | We assume that the stub can, and attempt to do it. This will be | |
960 | cleared if the stub does not understand it. This switch is still | |
961 | needed, though in cases when the packet is supported in the stub, | |
962 | but the connection does not allow it (i.e., 7-bit serial connection | |
963 | only). */ | |
964 | ||
965 | static struct packet_config remote_protocol_binary_download; | |
966 | ||
9d1f7ab2 MS |
967 | /* Should we try the 'ThreadInfo' query packet? |
968 | ||
969 | This variable (NOT available to the user: auto-detect only!) | |
970 | determines whether GDB will use the new, simpler "ThreadInfo" | |
971 | query or the older, more complex syntax for thread queries. | |
972 | This is an auto-detect variable (set to true at each connect, | |
973 | and set to false when the target fails to recognize it). */ | |
974 | ||
975 | static int use_threadinfo_query; | |
976 | static int use_threadextra_query; | |
977 | ||
96baa820 JM |
978 | static void |
979 | set_remote_protocol_binary_download_cmd (char *args, | |
980 | int from_tty, | |
981 | struct cmd_list_element *c) | |
982 | { | |
d471ea57 | 983 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
984 | } |
985 | ||
986 | static void | |
e9e68a56 AC |
987 | show_remote_protocol_binary_download_cmd (char *args, int from_tty, |
988 | struct cmd_list_element *c) | |
96baa820 JM |
989 | { |
990 | show_packet_config_cmd (&remote_protocol_binary_download); | |
991 | } | |
992 | ||
c906108c | 993 | |
43ff13b4 | 994 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
ae44c0c4 AC |
995 | static void *sigint_remote_twice_token; |
996 | static void *sigint_remote_token; | |
43ff13b4 | 997 | |
c906108c SS |
998 | /* These are pointers to hook functions that may be set in order to |
999 | modify resume/wait behavior for a particular architecture. */ | |
1000 | ||
507f3c78 KB |
1001 | void (*target_resume_hook) (void); |
1002 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
1003 | \f |
1004 | ||
c5aa993b | 1005 | |
c906108c SS |
1006 | /* These are the threads which we last sent to the remote system. |
1007 | -1 for all or -2 for not sent yet. */ | |
1008 | static int general_thread; | |
cce74817 | 1009 | static int continue_thread; |
c906108c SS |
1010 | |
1011 | /* Call this function as a result of | |
1012 | 1) A halt indication (T packet) containing a thread id | |
1013 | 2) A direct query of currthread | |
1014 | 3) Successful execution of set thread | |
1015 | */ | |
1016 | ||
1017 | static void | |
fba45db2 | 1018 | record_currthread (int currthread) |
c906108c | 1019 | { |
c906108c | 1020 | general_thread = currthread; |
cce74817 | 1021 | |
c906108c SS |
1022 | /* If this is a new thread, add it to GDB's thread list. |
1023 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1024 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1025 | { |
39f77062 | 1026 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1027 | ui_out_text (uiout, "[New "); |
39f77062 | 1028 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1029 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1030 | } |
c906108c SS |
1031 | } |
1032 | ||
1033 | #define MAGIC_NULL_PID 42000 | |
1034 | ||
1035 | static void | |
fba45db2 | 1036 | set_thread (int th, int gen) |
c906108c | 1037 | { |
d01949b6 AC |
1038 | struct remote_state *rs = get_remote_state (); |
1039 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1040 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1041 | |
1042 | if (state == th) | |
1043 | return; | |
1044 | ||
1045 | buf[0] = 'H'; | |
1046 | buf[1] = gen ? 'g' : 'c'; | |
1047 | if (th == MAGIC_NULL_PID) | |
1048 | { | |
1049 | buf[2] = '0'; | |
1050 | buf[3] = '\0'; | |
1051 | } | |
1052 | else if (th < 0) | |
1053 | sprintf (&buf[2], "-%x", -th); | |
1054 | else | |
1055 | sprintf (&buf[2], "%x", th); | |
1056 | putpkt (buf); | |
d01949b6 | 1057 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1058 | if (gen) |
c5aa993b | 1059 | general_thread = th; |
c906108c | 1060 | else |
cce74817 | 1061 | continue_thread = th; |
c906108c SS |
1062 | } |
1063 | \f | |
1064 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1065 | ||
1066 | static int | |
39f77062 | 1067 | remote_thread_alive (ptid_t ptid) |
c906108c | 1068 | { |
39f77062 | 1069 | int tid = PIDGET (ptid); |
cce74817 | 1070 | char buf[16]; |
c906108c | 1071 | |
cce74817 JM |
1072 | if (tid < 0) |
1073 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1074 | else |
cce74817 | 1075 | sprintf (buf, "T%08x", tid); |
c906108c | 1076 | putpkt (buf); |
c2d11a7d | 1077 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1078 | return (buf[0] == 'O' && buf[1] == 'K'); |
1079 | } | |
1080 | ||
1081 | /* About these extended threadlist and threadinfo packets. They are | |
1082 | variable length packets but, the fields within them are often fixed | |
1083 | length. They are redundent enough to send over UDP as is the | |
1084 | remote protocol in general. There is a matching unit test module | |
1085 | in libstub. */ | |
1086 | ||
cce74817 JM |
1087 | #define OPAQUETHREADBYTES 8 |
1088 | ||
1089 | /* a 64 bit opaque identifier */ | |
1090 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1091 | ||
1092 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1093 | protocol encoding, and remote.c. it is not particularly changable */ | |
1094 | ||
1095 | /* Right now, the internal structure is int. We want it to be bigger. | |
1096 | Plan to fix this. | |
c5aa993b | 1097 | */ |
cce74817 | 1098 | |
c5aa993b | 1099 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1100 | |
9d1f7ab2 | 1101 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1102 | equivalint to the reply of the remote threadinfo packet */ |
1103 | ||
1104 | struct gdb_ext_thread_info | |
c5aa993b JM |
1105 | { |
1106 | threadref threadid; /* External form of thread reference */ | |
1107 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1108 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1109 | char shortname[32]; /* To be used to name threads */ | |
1110 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1111 | }; | |
cce74817 JM |
1112 | |
1113 | /* The volume of remote transfers can be limited by submitting | |
1114 | a mask containing bits specifying the desired information. | |
1115 | Use a union of these values as the 'selection' parameter to | |
1116 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1117 | */ |
cce74817 JM |
1118 | |
1119 | #define TAG_THREADID 1 | |
1120 | #define TAG_EXISTS 2 | |
1121 | #define TAG_DISPLAY 4 | |
1122 | #define TAG_THREADNAME 8 | |
c5aa993b | 1123 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1124 | |
c906108c SS |
1125 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1126 | ||
b2dd6311 | 1127 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1128 | |
a14ed312 | 1129 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1130 | |
a14ed312 | 1131 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1132 | |
a14ed312 | 1133 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1134 | |
a14ed312 | 1135 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1136 | |
a14ed312 | 1137 | static char *pack_int (char *buf, int value); |
cce74817 | 1138 | |
a14ed312 | 1139 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1140 | |
a14ed312 | 1141 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1142 | |
a14ed312 | 1143 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1144 | |
a14ed312 | 1145 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1146 | |
a14ed312 | 1147 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1148 | |
a14ed312 | 1149 | static int threadref_to_int (threadref * ref); |
cce74817 | 1150 | |
a14ed312 | 1151 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1152 | |
a14ed312 | 1153 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1154 | |
a14ed312 | 1155 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1156 | |
a14ed312 KB |
1157 | static int remote_unpack_thread_info_response (char *pkt, |
1158 | threadref * expectedref, | |
1159 | struct gdb_ext_thread_info | |
1160 | *info); | |
cce74817 JM |
1161 | |
1162 | ||
a14ed312 KB |
1163 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1164 | struct gdb_ext_thread_info *info); | |
cce74817 | 1165 | |
a14ed312 KB |
1166 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1167 | int selection, | |
1168 | struct gdb_ext_thread_info *info); | |
cce74817 | 1169 | |
a14ed312 KB |
1170 | static char *pack_threadlist_request (char *pkt, int startflag, |
1171 | int threadcount, | |
1172 | threadref * nextthread); | |
cce74817 | 1173 | |
a14ed312 KB |
1174 | static int parse_threadlist_response (char *pkt, |
1175 | int result_limit, | |
1176 | threadref * original_echo, | |
1177 | threadref * resultlist, int *doneflag); | |
cce74817 | 1178 | |
a14ed312 KB |
1179 | static int remote_get_threadlist (int startflag, |
1180 | threadref * nextthread, | |
1181 | int result_limit, | |
1182 | int *done, | |
1183 | int *result_count, threadref * threadlist); | |
cce74817 | 1184 | |
c5aa993b | 1185 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1186 | |
a14ed312 KB |
1187 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1188 | void *context, int looplimit); | |
cce74817 | 1189 | |
a14ed312 | 1190 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1191 | |
c906108c SS |
1192 | /* encode 64 bits in 16 chars of hex */ |
1193 | ||
1194 | static const char hexchars[] = "0123456789abcdef"; | |
1195 | ||
1196 | static int | |
fba45db2 | 1197 | ishex (int ch, int *val) |
c906108c SS |
1198 | { |
1199 | if ((ch >= 'a') && (ch <= 'f')) | |
1200 | { | |
1201 | *val = ch - 'a' + 10; | |
1202 | return 1; | |
1203 | } | |
1204 | if ((ch >= 'A') && (ch <= 'F')) | |
1205 | { | |
1206 | *val = ch - 'A' + 10; | |
1207 | return 1; | |
1208 | } | |
1209 | if ((ch >= '0') && (ch <= '9')) | |
1210 | { | |
1211 | *val = ch - '0'; | |
1212 | return 1; | |
1213 | } | |
1214 | return 0; | |
1215 | } | |
1216 | ||
1217 | static int | |
fba45db2 | 1218 | stubhex (int ch) |
c906108c SS |
1219 | { |
1220 | if (ch >= 'a' && ch <= 'f') | |
1221 | return ch - 'a' + 10; | |
1222 | if (ch >= '0' && ch <= '9') | |
1223 | return ch - '0'; | |
1224 | if (ch >= 'A' && ch <= 'F') | |
1225 | return ch - 'A' + 10; | |
1226 | return -1; | |
1227 | } | |
1228 | ||
1229 | static int | |
fba45db2 | 1230 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1231 | { |
1232 | int nibble; | |
1233 | int retval = 0; | |
1234 | ||
1235 | while (fieldlength) | |
1236 | { | |
1237 | nibble = stubhex (*buff++); | |
1238 | retval |= nibble; | |
1239 | fieldlength--; | |
1240 | if (fieldlength) | |
1241 | retval = retval << 4; | |
1242 | } | |
1243 | return retval; | |
1244 | } | |
1245 | ||
1246 | char * | |
fba45db2 | 1247 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1248 | ULONGEST *result) |
c906108c SS |
1249 | { |
1250 | int nibble; | |
1251 | int retval = 0; | |
1252 | ||
1253 | while (ishex (*buff, &nibble)) | |
1254 | { | |
1255 | buff++; | |
1256 | retval = retval << 4; | |
1257 | retval |= nibble & 0x0f; | |
1258 | } | |
1259 | *result = retval; | |
1260 | return buff; | |
1261 | } | |
1262 | ||
1263 | static char * | |
fba45db2 | 1264 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1265 | { |
1266 | ishex (*buf++, val); | |
1267 | return buf; | |
1268 | } | |
1269 | ||
1270 | static char * | |
fba45db2 | 1271 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1272 | { |
1273 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1274 | return buf; | |
1275 | } | |
1276 | ||
1277 | static char * | |
fba45db2 | 1278 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1279 | { |
1280 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1281 | *pkt++ = hexchars[(byte & 0xf)]; | |
1282 | return pkt; | |
1283 | } | |
1284 | ||
1285 | static char * | |
fba45db2 | 1286 | unpack_byte (char *buf, int *value) |
c906108c SS |
1287 | { |
1288 | *value = stub_unpack_int (buf, 2); | |
1289 | return buf + 2; | |
1290 | } | |
1291 | ||
1292 | static char * | |
fba45db2 | 1293 | pack_int (char *buf, int value) |
c906108c SS |
1294 | { |
1295 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1296 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1297 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1298 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1299 | return buf; | |
1300 | } | |
1301 | ||
1302 | static char * | |
fba45db2 | 1303 | unpack_int (char *buf, int *value) |
c906108c SS |
1304 | { |
1305 | *value = stub_unpack_int (buf, 8); | |
1306 | return buf + 8; | |
1307 | } | |
1308 | ||
c5aa993b | 1309 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1310 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1311 | |
1312 | static char * | |
fba45db2 | 1313 | pack_string (char *pkt, char *string) |
c906108c SS |
1314 | { |
1315 | char ch; | |
1316 | int len; | |
1317 | ||
1318 | len = strlen (string); | |
1319 | if (len > 200) | |
1320 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1321 | pkt = pack_hex_byte (pkt, len); | |
1322 | while (len-- > 0) | |
1323 | { | |
1324 | ch = *string++; | |
1325 | if ((ch == '\0') || (ch == '#')) | |
1326 | ch = '*'; /* Protect encapsulation */ | |
1327 | *pkt++ = ch; | |
1328 | } | |
1329 | return pkt; | |
1330 | } | |
1331 | #endif /* 0 (unused) */ | |
1332 | ||
1333 | static char * | |
fba45db2 | 1334 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1335 | { |
1336 | while (length--) | |
1337 | *dest++ = *src++; | |
1338 | *dest = '\0'; | |
1339 | return src; | |
1340 | } | |
1341 | ||
1342 | static char * | |
fba45db2 | 1343 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1344 | { |
1345 | char *limit; | |
1346 | unsigned char *altid; | |
1347 | ||
1348 | altid = (unsigned char *) id; | |
1349 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1350 | while (pkt < limit) | |
1351 | pkt = pack_hex_byte (pkt, *altid++); | |
1352 | return pkt; | |
1353 | } | |
1354 | ||
1355 | ||
1356 | static char * | |
fba45db2 | 1357 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1358 | { |
1359 | char *altref; | |
1360 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1361 | int x, y; | |
1362 | ||
1363 | altref = (char *) id; | |
1364 | ||
1365 | while (inbuf < limit) | |
1366 | { | |
1367 | x = stubhex (*inbuf++); | |
1368 | y = stubhex (*inbuf++); | |
1369 | *altref++ = (x << 4) | y; | |
1370 | } | |
1371 | return inbuf; | |
1372 | } | |
1373 | ||
1374 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1375 | ints. This is due to a mismatch of specifications. We would like | |
1376 | to use 64bit thread references internally. This is an adapter | |
1377 | function. */ | |
1378 | ||
1379 | void | |
fba45db2 | 1380 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1381 | { |
1382 | unsigned char *scan; | |
1383 | ||
1384 | scan = (unsigned char *) id; | |
1385 | { | |
1386 | int i = 4; | |
1387 | while (i--) | |
1388 | *scan++ = 0; | |
1389 | } | |
1390 | *scan++ = (value >> 24) & 0xff; | |
1391 | *scan++ = (value >> 16) & 0xff; | |
1392 | *scan++ = (value >> 8) & 0xff; | |
1393 | *scan++ = (value & 0xff); | |
1394 | } | |
1395 | ||
1396 | static int | |
fba45db2 | 1397 | threadref_to_int (threadref *ref) |
c906108c SS |
1398 | { |
1399 | int i, value = 0; | |
1400 | unsigned char *scan; | |
1401 | ||
1402 | scan = (char *) ref; | |
1403 | scan += 4; | |
1404 | i = 4; | |
1405 | while (i-- > 0) | |
1406 | value = (value << 8) | ((*scan++) & 0xff); | |
1407 | return value; | |
1408 | } | |
1409 | ||
1410 | static void | |
fba45db2 | 1411 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1412 | { |
1413 | int i; | |
1414 | unsigned char *csrc, *cdest; | |
1415 | ||
1416 | csrc = (unsigned char *) src; | |
1417 | cdest = (unsigned char *) dest; | |
1418 | i = 8; | |
1419 | while (i--) | |
1420 | *cdest++ = *csrc++; | |
1421 | } | |
1422 | ||
1423 | static int | |
fba45db2 | 1424 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1425 | { |
1426 | /* things are broken right now, so just assume we got a match */ | |
1427 | #if 0 | |
1428 | unsigned char *srcp, *destp; | |
1429 | int i, result; | |
1430 | srcp = (char *) src; | |
1431 | destp = (char *) dest; | |
1432 | ||
1433 | result = 1; | |
1434 | while (i-- > 0) | |
1435 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1436 | return result; | |
1437 | #endif | |
1438 | return 1; | |
1439 | } | |
1440 | ||
1441 | /* | |
c5aa993b JM |
1442 | threadid:1, # always request threadid |
1443 | context_exists:2, | |
1444 | display:4, | |
1445 | unique_name:8, | |
1446 | more_display:16 | |
1447 | */ | |
c906108c SS |
1448 | |
1449 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1450 | ||
1451 | static char * | |
fba45db2 | 1452 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1453 | { |
1454 | *pkt++ = 'q'; /* Info Query */ | |
1455 | *pkt++ = 'P'; /* process or thread info */ | |
1456 | pkt = pack_int (pkt, mode); /* mode */ | |
1457 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1458 | *pkt = '\0'; /* terminate */ | |
1459 | return pkt; | |
1460 | } | |
1461 | ||
1462 | /* These values tag the fields in a thread info response packet */ | |
1463 | /* Tagging the fields allows us to request specific fields and to | |
1464 | add more fields as time goes by */ | |
1465 | ||
c5aa993b JM |
1466 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1467 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1468 | fetch registers and its stack */ | |
1469 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1470 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1471 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1472 | the process */ | |
c906108c SS |
1473 | |
1474 | static int | |
fba45db2 KB |
1475 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1476 | struct gdb_ext_thread_info *info) | |
c906108c | 1477 | { |
d01949b6 | 1478 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1479 | int mask, length; |
1480 | unsigned int tag; | |
1481 | threadref ref; | |
d01949b6 | 1482 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1483 | int retval = 1; |
1484 | ||
1485 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1486 | info->active = 0; | |
1487 | info->display[0] = '\0'; | |
1488 | info->shortname[0] = '\0'; | |
1489 | info->more_display[0] = '\0'; | |
1490 | ||
1491 | /* Assume the characters indicating the packet type have been stripped */ | |
1492 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1493 | pkt = unpack_threadid (pkt, &ref); | |
1494 | ||
1495 | if (mask == 0) | |
1496 | warning ("Incomplete response to threadinfo request\n"); | |
1497 | if (!threadmatch (&ref, expectedref)) | |
1498 | { /* This is an answer to a different request */ | |
1499 | warning ("ERROR RMT Thread info mismatch\n"); | |
1500 | return 0; | |
1501 | } | |
1502 | copy_threadref (&info->threadid, &ref); | |
1503 | ||
1504 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1505 | ||
c5aa993b | 1506 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1507 | { |
1508 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1509 | pkt = unpack_byte (pkt, &length); /* length */ | |
1510 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1511 | { | |
1512 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1513 | retval = 0; | |
1514 | break; | |
1515 | } | |
1516 | if (tag == TAG_THREADID) | |
1517 | { | |
1518 | if (length != 16) | |
1519 | { | |
1520 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1521 | retval = 0; | |
1522 | break; | |
1523 | } | |
1524 | pkt = unpack_threadid (pkt, &ref); | |
1525 | mask = mask & ~TAG_THREADID; | |
1526 | continue; | |
1527 | } | |
1528 | if (tag == TAG_EXISTS) | |
1529 | { | |
1530 | info->active = stub_unpack_int (pkt, length); | |
1531 | pkt += length; | |
1532 | mask = mask & ~(TAG_EXISTS); | |
1533 | if (length > 8) | |
1534 | { | |
1535 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1536 | retval = 0; | |
1537 | break; | |
1538 | } | |
1539 | continue; | |
1540 | } | |
1541 | if (tag == TAG_THREADNAME) | |
1542 | { | |
1543 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1544 | mask = mask & ~TAG_THREADNAME; | |
1545 | continue; | |
1546 | } | |
1547 | if (tag == TAG_DISPLAY) | |
1548 | { | |
1549 | pkt = unpack_string (pkt, &info->display[0], length); | |
1550 | mask = mask & ~TAG_DISPLAY; | |
1551 | continue; | |
1552 | } | |
1553 | if (tag == TAG_MOREDISPLAY) | |
1554 | { | |
1555 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1556 | mask = mask & ~TAG_MOREDISPLAY; | |
1557 | continue; | |
1558 | } | |
1559 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1560 | break; /* Not a tag we know about */ | |
1561 | } | |
1562 | return retval; | |
1563 | } | |
1564 | ||
1565 | static int | |
fba45db2 KB |
1566 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1567 | struct gdb_ext_thread_info *info) | |
c906108c | 1568 | { |
d01949b6 | 1569 | struct remote_state *rs = get_remote_state (); |
c906108c | 1570 | int result; |
d01949b6 | 1571 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1572 | |
1573 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1574 | putpkt (threadinfo_pkt); | |
d01949b6 | 1575 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1576 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1577 | info); | |
1578 | return result; | |
1579 | } | |
1580 | ||
1581 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1582 | representation of a threadid. */ | |
1583 | ||
1584 | static int | |
fba45db2 KB |
1585 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1586 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1587 | { |
1588 | threadref lclref; | |
1589 | ||
1590 | int_to_threadref (&lclref, *ref); | |
1591 | return remote_get_threadinfo (&lclref, selection, info); | |
1592 | } | |
1593 | ||
1594 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1595 | ||
1596 | static char * | |
fba45db2 KB |
1597 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1598 | threadref *nextthread) | |
c906108c SS |
1599 | { |
1600 | *pkt++ = 'q'; /* info query packet */ | |
1601 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1602 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1603 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1604 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1605 | *pkt = '\0'; | |
1606 | return pkt; | |
1607 | } | |
1608 | ||
1609 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1610 | ||
1611 | static int | |
fba45db2 KB |
1612 | parse_threadlist_response (char *pkt, int result_limit, |
1613 | threadref *original_echo, threadref *resultlist, | |
1614 | int *doneflag) | |
c906108c | 1615 | { |
d01949b6 | 1616 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1617 | char *limit; |
1618 | int count, resultcount, done; | |
1619 | ||
1620 | resultcount = 0; | |
1621 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1622 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1623 | pkt = unpack_byte (pkt, &count); /* count field */ |
1624 | pkt = unpack_nibble (pkt, &done); | |
1625 | /* The first threadid is the argument threadid. */ | |
1626 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1627 | while ((count-- > 0) && (pkt < limit)) | |
1628 | { | |
1629 | pkt = unpack_threadid (pkt, resultlist++); | |
1630 | if (resultcount++ >= result_limit) | |
1631 | break; | |
1632 | } | |
1633 | if (doneflag) | |
1634 | *doneflag = done; | |
1635 | return resultcount; | |
1636 | } | |
1637 | ||
1638 | static int | |
fba45db2 KB |
1639 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1640 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1641 | { |
d01949b6 | 1642 | struct remote_state *rs = get_remote_state (); |
c906108c | 1643 | static threadref echo_nextthread; |
d01949b6 AC |
1644 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1645 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1646 | int result = 1; |
1647 | ||
1648 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1649 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1650 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1651 | |
1652 | pack_threadlist_request (threadlist_packet, | |
1653 | startflag, result_limit, nextthread); | |
1654 | putpkt (threadlist_packet); | |
d01949b6 | 1655 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1656 | |
1657 | *result_count = | |
1658 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1659 | threadlist, done); | |
1660 | ||
1661 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1662 | { | |
1663 | /* FIXME: This is a good reason to drop the packet */ | |
1664 | /* Possably, there is a duplicate response */ | |
1665 | /* Possabilities : | |
1666 | retransmit immediatly - race conditions | |
1667 | retransmit after timeout - yes | |
1668 | exit | |
1669 | wait for packet, then exit | |
1670 | */ | |
1671 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1672 | return 0; /* I choose simply exiting */ | |
1673 | } | |
1674 | if (*result_count <= 0) | |
1675 | { | |
1676 | if (*done != 1) | |
1677 | { | |
1678 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1679 | result = 0; | |
1680 | } | |
1681 | return result; /* break; */ | |
1682 | } | |
1683 | if (*result_count > result_limit) | |
1684 | { | |
1685 | *result_count = 0; | |
1686 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1687 | return 0; | |
1688 | } | |
1689 | return result; | |
1690 | } | |
1691 | ||
1692 | /* This is the interface between remote and threads, remotes upper interface */ | |
1693 | ||
1694 | /* remote_find_new_threads retrieves the thread list and for each | |
1695 | thread in the list, looks up the thread in GDB's internal list, | |
1696 | ading the thread if it does not already exist. This involves | |
1697 | getting partial thread lists from the remote target so, polling the | |
1698 | quit_flag is required. */ | |
1699 | ||
1700 | ||
1701 | /* About this many threadisds fit in a packet. */ | |
1702 | ||
1703 | #define MAXTHREADLISTRESULTS 32 | |
1704 | ||
1705 | static int | |
fba45db2 KB |
1706 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1707 | int looplimit) | |
c906108c SS |
1708 | { |
1709 | int done, i, result_count; | |
1710 | int startflag = 1; | |
1711 | int result = 1; | |
1712 | int loopcount = 0; | |
1713 | static threadref nextthread; | |
1714 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1715 | ||
1716 | done = 0; | |
1717 | while (!done) | |
1718 | { | |
1719 | if (loopcount++ > looplimit) | |
1720 | { | |
1721 | result = 0; | |
1722 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1723 | break; | |
1724 | } | |
1725 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1726 | &done, &result_count, resultthreadlist)) | |
1727 | { | |
1728 | result = 0; | |
1729 | break; | |
1730 | } | |
1731 | /* clear for later iterations */ | |
1732 | startflag = 0; | |
1733 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1734 | if (result_count >= 1) | |
1735 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1736 | i = 0; | |
1737 | while (result_count--) | |
1738 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1739 | break; | |
1740 | } | |
1741 | return result; | |
1742 | } | |
1743 | ||
1744 | static int | |
fba45db2 | 1745 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1746 | { |
39f77062 | 1747 | ptid_t ptid; |
c906108c | 1748 | |
39f77062 KB |
1749 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1750 | ||
1751 | if (!in_thread_list (ptid)) | |
1752 | add_thread (ptid); | |
c906108c SS |
1753 | return 1; /* continue iterator */ |
1754 | } | |
1755 | ||
1756 | #define CRAZY_MAX_THREADS 1000 | |
1757 | ||
39f77062 KB |
1758 | static ptid_t |
1759 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1760 | { |
d01949b6 AC |
1761 | struct remote_state *rs = get_remote_state (); |
1762 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1763 | |
1764 | putpkt ("qC"); | |
d01949b6 | 1765 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1766 | if (buf[0] == 'Q' && buf[1] == 'C') |
39f77062 | 1767 | return pid_to_ptid (strtol (&buf[2], NULL, 16)); |
c906108c SS |
1768 | else |
1769 | return oldpid; | |
1770 | } | |
1771 | ||
9d1f7ab2 MS |
1772 | /* Find new threads for info threads command. |
1773 | * Original version, using John Metzler's thread protocol. | |
1774 | */ | |
cce74817 JM |
1775 | |
1776 | static void | |
fba45db2 | 1777 | remote_find_new_threads (void) |
c906108c | 1778 | { |
c5aa993b JM |
1779 | remote_threadlist_iterator (remote_newthread_step, 0, |
1780 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1781 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1782 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1783 | } |
1784 | ||
9d1f7ab2 MS |
1785 | /* |
1786 | * Find all threads for info threads command. | |
1787 | * Uses new thread protocol contributed by Cisco. | |
1788 | * Falls back and attempts to use the older method (above) | |
1789 | * if the target doesn't respond to the new method. | |
1790 | */ | |
1791 | ||
0f71a2f6 JM |
1792 | static void |
1793 | remote_threads_info (void) | |
1794 | { | |
d01949b6 AC |
1795 | struct remote_state *rs = get_remote_state (); |
1796 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1797 | char *bufp; |
0f71a2f6 JM |
1798 | int tid; |
1799 | ||
1800 | if (remote_desc == 0) /* paranoia */ | |
1801 | error ("Command can only be used when connected to the remote target."); | |
1802 | ||
9d1f7ab2 MS |
1803 | if (use_threadinfo_query) |
1804 | { | |
1805 | putpkt ("qfThreadInfo"); | |
1806 | bufp = buf; | |
d01949b6 | 1807 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1808 | if (bufp[0] != '\0') /* q packet recognized */ |
1809 | { | |
1810 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1811 | { | |
1812 | do | |
1813 | { | |
1814 | tid = strtol (bufp, &bufp, 16); | |
39f77062 KB |
1815 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1816 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1817 | } |
1818 | while (*bufp++ == ','); /* comma-separated list */ | |
1819 | putpkt ("qsThreadInfo"); | |
1820 | bufp = buf; | |
d01949b6 | 1821 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1822 | } |
1823 | return; /* done */ | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | /* Else fall back to old method based on jmetzler protocol. */ | |
1828 | use_threadinfo_query = 0; | |
1829 | remote_find_new_threads (); | |
1830 | return; | |
1831 | } | |
1832 | ||
1833 | /* | |
1834 | * Collect a descriptive string about the given thread. | |
1835 | * The target may say anything it wants to about the thread | |
1836 | * (typically info about its blocked / runnable state, name, etc.). | |
1837 | * This string will appear in the info threads display. | |
1838 | * | |
1839 | * Optional: targets are not required to implement this function. | |
1840 | */ | |
1841 | ||
1842 | static char * | |
1843 | remote_threads_extra_info (struct thread_info *tp) | |
1844 | { | |
d01949b6 | 1845 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1846 | int result; |
1847 | int set; | |
1848 | threadref id; | |
1849 | struct gdb_ext_thread_info threadinfo; | |
1850 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1851 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1852 | int n = 0; /* position in display_buf */ |
1853 | ||
1854 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1855 | internal_error (__FILE__, __LINE__, |
1856 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1857 | |
1858 | if (use_threadextra_query) | |
1859 | { | |
39f77062 | 1860 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1861 | putpkt (bufp); |
d01949b6 | 1862 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1863 | if (bufp[0] != 0) |
1864 | { | |
30559e10 MS |
1865 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1866 | result = hex2bin (bufp, display_buf, n); | |
1867 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1868 | return display_buf; |
1869 | } | |
0f71a2f6 | 1870 | } |
9d1f7ab2 MS |
1871 | |
1872 | /* If the above query fails, fall back to the old method. */ | |
1873 | use_threadextra_query = 0; | |
1874 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1875 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1876 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1877 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1878 | if (threadinfo.active) | |
0f71a2f6 | 1879 | { |
9d1f7ab2 MS |
1880 | if (*threadinfo.shortname) |
1881 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1882 | if (*threadinfo.display) | |
1883 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1884 | if (*threadinfo.more_display) | |
1885 | n += sprintf(&display_buf[n], " Priority: %s", | |
1886 | threadinfo.more_display); | |
1887 | ||
1888 | if (n > 0) | |
c5aa993b | 1889 | { |
9d1f7ab2 MS |
1890 | /* for purely cosmetic reasons, clear up trailing commas */ |
1891 | if (',' == display_buf[n-1]) | |
1892 | display_buf[n-1] = ' '; | |
1893 | return display_buf; | |
c5aa993b | 1894 | } |
0f71a2f6 | 1895 | } |
9d1f7ab2 | 1896 | return NULL; |
0f71a2f6 | 1897 | } |
9d1f7ab2 | 1898 | |
c906108c | 1899 | \f |
c5aa993b | 1900 | |
c906108c SS |
1901 | /* Restart the remote side; this is an extended protocol operation. */ |
1902 | ||
1903 | static void | |
fba45db2 | 1904 | extended_remote_restart (void) |
c906108c | 1905 | { |
d01949b6 AC |
1906 | struct remote_state *rs = get_remote_state (); |
1907 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1908 | |
1909 | /* Send the restart command; for reasons I don't understand the | |
1910 | remote side really expects a number after the "R". */ | |
1911 | buf[0] = 'R'; | |
1912 | sprintf (&buf[1], "%x", 0); | |
1913 | putpkt (buf); | |
1914 | ||
1915 | /* Now query for status so this looks just like we restarted | |
1916 | gdbserver from scratch. */ | |
1917 | putpkt ("?"); | |
d01949b6 | 1918 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1919 | } |
1920 | \f | |
1921 | /* Clean up connection to a remote debugger. */ | |
1922 | ||
c906108c | 1923 | static void |
fba45db2 | 1924 | remote_close (int quitting) |
c906108c SS |
1925 | { |
1926 | if (remote_desc) | |
2cd58942 | 1927 | serial_close (remote_desc); |
c906108c SS |
1928 | remote_desc = NULL; |
1929 | } | |
1930 | ||
1931 | /* Query the remote side for the text, data and bss offsets. */ | |
1932 | ||
1933 | static void | |
fba45db2 | 1934 | get_offsets (void) |
c906108c | 1935 | { |
d01949b6 AC |
1936 | struct remote_state *rs = get_remote_state (); |
1937 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1938 | char *ptr; |
c906108c SS |
1939 | int lose; |
1940 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1941 | struct section_offsets *offs; | |
1942 | ||
1943 | putpkt ("qOffsets"); | |
1944 | ||
d01949b6 | 1945 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1946 | |
1947 | if (buf[0] == '\000') | |
1948 | return; /* Return silently. Stub doesn't support | |
1949 | this command. */ | |
1950 | if (buf[0] == 'E') | |
1951 | { | |
1952 | warning ("Remote failure reply: %s", buf); | |
1953 | return; | |
1954 | } | |
1955 | ||
1956 | /* Pick up each field in turn. This used to be done with scanf, but | |
1957 | scanf will make trouble if CORE_ADDR size doesn't match | |
1958 | conversion directives correctly. The following code will work | |
1959 | with any size of CORE_ADDR. */ | |
1960 | text_addr = data_addr = bss_addr = 0; | |
1961 | ptr = buf; | |
1962 | lose = 0; | |
1963 | ||
1964 | if (strncmp (ptr, "Text=", 5) == 0) | |
1965 | { | |
1966 | ptr += 5; | |
1967 | /* Don't use strtol, could lose on big values. */ | |
1968 | while (*ptr && *ptr != ';') | |
1969 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1970 | } | |
1971 | else | |
1972 | lose = 1; | |
1973 | ||
1974 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1975 | { | |
1976 | ptr += 6; | |
1977 | while (*ptr && *ptr != ';') | |
1978 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1979 | } | |
1980 | else | |
1981 | lose = 1; | |
1982 | ||
1983 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1984 | { | |
1985 | ptr += 5; | |
1986 | while (*ptr && *ptr != ';') | |
1987 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1988 | } | |
1989 | else | |
1990 | lose = 1; | |
1991 | ||
1992 | if (lose) | |
1993 | error ("Malformed response to offset query, %s", buf); | |
1994 | ||
1995 | if (symfile_objfile == NULL) | |
1996 | return; | |
1997 | ||
a39a16c4 MM |
1998 | offs = ((struct section_offsets *) |
1999 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); | |
2000 | memcpy (offs, symfile_objfile->section_offsets, | |
2001 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); | |
c906108c | 2002 | |
a4c8257b | 2003 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
2004 | |
2005 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2006 | because that's what nlmconv does now. The real solution requires changes | |
2007 | to the stub and remote.c that I don't have time to do right now. */ | |
2008 | ||
a4c8257b EZ |
2009 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
2010 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
2011 | |
2012 | objfile_relocate (symfile_objfile, offs); | |
2013 | } | |
2014 | ||
0f71a2f6 JM |
2015 | /* |
2016 | * Cisco version of section offsets: | |
2017 | * | |
2018 | * Instead of having GDB query the target for the section offsets, | |
2019 | * Cisco lets the target volunteer the information! It's also in | |
2020 | * a different format, so here are the functions that will decode | |
2021 | * a section offset packet from a Cisco target. | |
2022 | */ | |
2023 | ||
2024 | /* | |
2025 | * Function: remote_cisco_section_offsets | |
2026 | * | |
2027 | * Returns: zero for success, non-zero for failure | |
2028 | */ | |
2029 | ||
c5aa993b | 2030 | static int |
c2d11a7d JM |
2031 | remote_cisco_section_offsets (bfd_vma text_addr, |
2032 | bfd_vma data_addr, | |
2033 | bfd_vma bss_addr, | |
2034 | bfd_signed_vma *text_offs, | |
2035 | bfd_signed_vma *data_offs, | |
2036 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
2037 | { |
2038 | bfd_vma text_base, data_base, bss_base; | |
2039 | struct minimal_symbol *start; | |
2040 | asection *sect; | |
c5aa993b | 2041 | bfd *abfd; |
0f71a2f6 | 2042 | int len; |
0f71a2f6 JM |
2043 | |
2044 | if (symfile_objfile == NULL) | |
c5aa993b | 2045 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
2046 | |
2047 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
2048 | if (start == NULL) | |
c5aa993b | 2049 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
2050 | |
2051 | data_base = bss_base = 0; | |
2052 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
2053 | ||
2054 | abfd = symfile_objfile->obfd; | |
c5aa993b | 2055 | for (sect = abfd->sections; |
0f71a2f6 JM |
2056 | sect != 0; |
2057 | sect = sect->next) | |
2058 | { | |
ce359b09 | 2059 | const char *p = bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
2060 | len = strlen (p); |
2061 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
2062 | if (data_base == 0 || | |
2063 | data_base > bfd_get_section_vma (abfd, sect)) | |
2064 | data_base = bfd_get_section_vma (abfd, sect); | |
2065 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 2066 | if (bss_base == 0 || |
0f71a2f6 JM |
2067 | bss_base > bfd_get_section_vma (abfd, sect)) |
2068 | bss_base = bfd_get_section_vma (abfd, sect); | |
2069 | } | |
2070 | *text_offs = text_addr - text_base; | |
2071 | *data_offs = data_addr - data_base; | |
c5aa993b | 2072 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
2073 | if (remote_debug) |
2074 | { | |
2075 | char tmp[128]; | |
2076 | ||
2077 | sprintf (tmp, "VMA: text = 0x"); | |
2078 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 2079 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 2080 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 2081 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 | 2082 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
306d9ac5 | 2083 | fputs_filtered (tmp, gdb_stdlog); |
0f71a2f6 | 2084 | fprintf_filtered (gdb_stdlog, |
d4f3574e SS |
2085 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
2086 | paddr_nz (*text_offs), | |
2087 | paddr_nz (*data_offs), | |
2088 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
2089 | } |
2090 | ||
2091 | return 0; | |
2092 | } | |
2093 | ||
2094 | /* | |
2095 | * Function: remote_cisco_objfile_relocate | |
2096 | * | |
2097 | * Relocate the symbol file for a remote target. | |
2098 | */ | |
2099 | ||
96baa820 | 2100 | void |
fba45db2 KB |
2101 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
2102 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
2103 | { |
2104 | struct section_offsets *offs; | |
2105 | ||
c5aa993b | 2106 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2107 | { |
2108 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
2109 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
2110 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 2111 | |
a39a16c4 MM |
2112 | offs = (struct section_offsets *) |
2113 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); | |
2114 | memcpy (offs, symfile_objfile->section_offsets, | |
2115 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); | |
0f71a2f6 | 2116 | |
a4c8257b EZ |
2117 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
2118 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
2119 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
2120 | |
2121 | /* First call the standard objfile_relocate. */ | |
2122 | objfile_relocate (symfile_objfile, offs); | |
2123 | ||
2124 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
2125 | the exec target. These entries will control memory transfers |
2126 | from the exec file. */ | |
0f71a2f6 JM |
2127 | |
2128 | exec_set_section_offsets (text_off, data_off, bss_off); | |
2129 | } | |
2130 | } | |
2131 | ||
c906108c SS |
2132 | /* Stub for catch_errors. */ |
2133 | ||
0f71a2f6 | 2134 | static int |
36918e70 | 2135 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 JM |
2136 | { |
2137 | start_remote (); /* Initialize gdb process mechanisms */ | |
36918e70 AC |
2138 | /* NOTE: Return something >=0. A -ve value is reserved for |
2139 | catch_exceptions. */ | |
0f71a2f6 JM |
2140 | return 1; |
2141 | } | |
2142 | ||
c906108c | 2143 | static int |
36918e70 | 2144 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 2145 | { |
8edbea78 | 2146 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2147 | |
2148 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2149 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2150 | |
2151 | /* Let the stub know that we want it to return the thread. */ | |
2152 | set_thread (-1, 0); | |
2153 | ||
39f77062 | 2154 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2155 | |
2156 | get_offsets (); /* Get text, data & bss offsets */ | |
2157 | ||
2158 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2159 | immediate_quit--; |
c906108c | 2160 | |
36918e70 AC |
2161 | /* NOTE: See comment above in remote_start_remote_dummy(). This |
2162 | function returns something >=0. */ | |
2163 | return remote_start_remote_dummy (uiout, dummy); | |
c906108c SS |
2164 | } |
2165 | ||
2166 | /* Open a connection to a remote debugger. | |
2167 | NAME is the filename used for communication. */ | |
2168 | ||
2169 | static void | |
fba45db2 | 2170 | remote_open (char *name, int from_tty) |
c906108c | 2171 | { |
92d1e331 | 2172 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2173 | } |
2174 | ||
43ff13b4 JM |
2175 | /* Just like remote_open, but with asynchronous support. */ |
2176 | static void | |
fba45db2 | 2177 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2178 | { |
92d1e331 | 2179 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2180 | } |
2181 | ||
c906108c SS |
2182 | /* Open a connection to a remote debugger using the extended |
2183 | remote gdb protocol. NAME is the filename used for communication. */ | |
2184 | ||
2185 | static void | |
fba45db2 | 2186 | extended_remote_open (char *name, int from_tty) |
c906108c | 2187 | { |
92d1e331 DJ |
2188 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2189 | 0 /* async_p */); | |
c906108c SS |
2190 | } |
2191 | ||
43ff13b4 JM |
2192 | /* Just like extended_remote_open, but with asynchronous support. */ |
2193 | static void | |
fba45db2 | 2194 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2195 | { |
92d1e331 DJ |
2196 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2197 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2198 | } |
2199 | ||
c906108c SS |
2200 | /* Generic code for opening a connection to a remote target. */ |
2201 | ||
d471ea57 AC |
2202 | static void |
2203 | init_all_packet_configs (void) | |
2204 | { | |
2205 | int i; | |
44eaed12 C |
2206 | update_packet_config (&remote_protocol_e); |
2207 | update_packet_config (&remote_protocol_E); | |
d471ea57 | 2208 | update_packet_config (&remote_protocol_P); |
dc8acb97 | 2209 | update_packet_config (&remote_protocol_qSymbol); |
506fb367 | 2210 | update_packet_config (&remote_protocol_vcont); |
d471ea57 AC |
2211 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2212 | update_packet_config (&remote_protocol_Z[i]); | |
2213 | /* Force remote_write_bytes to check whether target supports binary | |
2214 | downloading. */ | |
2215 | update_packet_config (&remote_protocol_binary_download); | |
2216 | } | |
2217 | ||
dc8acb97 MS |
2218 | /* Symbol look-up. */ |
2219 | ||
2220 | static void | |
2221 | remote_check_symbols (struct objfile *objfile) | |
2222 | { | |
d01949b6 | 2223 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2224 | char *msg, *reply, *tmp; |
2225 | struct minimal_symbol *sym; | |
2226 | int end; | |
2227 | ||
2228 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2229 | return; | |
2230 | ||
d01949b6 AC |
2231 | msg = alloca (rs->remote_packet_size); |
2232 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2233 | |
2234 | /* Invite target to request symbol lookups. */ | |
2235 | ||
2236 | putpkt ("qSymbol::"); | |
d01949b6 | 2237 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2238 | packet_ok (reply, &remote_protocol_qSymbol); |
2239 | ||
2240 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2241 | { | |
2242 | tmp = &reply[8]; | |
2243 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2244 | msg[end] = '\0'; | |
2245 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2246 | if (sym == NULL) | |
2247 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2248 | else | |
2249 | sprintf (msg, "qSymbol:%s:%s", | |
2250 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
2251 | &reply[8]); | |
2252 | putpkt (msg); | |
d01949b6 | 2253 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2254 | } |
2255 | } | |
2256 | ||
9db8d71f DJ |
2257 | static struct serial * |
2258 | remote_serial_open (char *name) | |
2259 | { | |
2260 | static int udp_warning = 0; | |
2261 | ||
2262 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2263 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2264 | serial connection is reliable and not the serial connection promising | |
2265 | to be. */ | |
2266 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2267 | { | |
2268 | warning ("The remote protocol may be unreliable over UDP."); | |
2269 | warning ("Some events may be lost, rendering further debugging " | |
2270 | "impossible."); | |
2271 | udp_warning = 1; | |
2272 | } | |
2273 | ||
2274 | return serial_open (name); | |
2275 | } | |
2276 | ||
c906108c | 2277 | static void |
fba45db2 | 2278 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2279 | int extended_p, int async_p) |
c906108c | 2280 | { |
36918e70 | 2281 | int ex; |
d01949b6 | 2282 | struct remote_state *rs = get_remote_state (); |
c906108c | 2283 | if (name == 0) |
22e04375 AC |
2284 | error ("To open a remote debug connection, you need to specify what\n" |
2285 | "serial device is attached to the remote system\n" | |
2286 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2287 | |
6426a772 | 2288 | /* See FIXME above */ |
92d1e331 DJ |
2289 | if (!async_p) |
2290 | wait_forever_enabled_p = 1; | |
6426a772 | 2291 | |
c906108c SS |
2292 | target_preopen (from_tty); |
2293 | ||
2294 | unpush_target (target); | |
2295 | ||
9db8d71f | 2296 | remote_desc = remote_serial_open (name); |
c906108c SS |
2297 | if (!remote_desc) |
2298 | perror_with_name (name); | |
2299 | ||
2300 | if (baud_rate != -1) | |
2301 | { | |
2cd58942 | 2302 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2303 | { |
2cd58942 | 2304 | serial_close (remote_desc); |
c906108c SS |
2305 | perror_with_name (name); |
2306 | } | |
2307 | } | |
2308 | ||
2cd58942 | 2309 | serial_raw (remote_desc); |
c906108c SS |
2310 | |
2311 | /* If there is something sitting in the buffer we might take it as a | |
2312 | response to a command, which would be bad. */ | |
2cd58942 | 2313 | serial_flush_input (remote_desc); |
c906108c SS |
2314 | |
2315 | if (from_tty) | |
2316 | { | |
2317 | puts_filtered ("Remote debugging using "); | |
2318 | puts_filtered (name); | |
2319 | puts_filtered ("\n"); | |
2320 | } | |
c5aa993b | 2321 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2322 | |
d471ea57 | 2323 | init_all_packet_configs (); |
96baa820 | 2324 | |
c5aa993b | 2325 | general_thread = -2; |
cce74817 | 2326 | continue_thread = -2; |
c906108c | 2327 | |
9d1f7ab2 MS |
2328 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2329 | use_threadinfo_query = 1; | |
2330 | use_threadextra_query = 1; | |
2331 | ||
c906108c SS |
2332 | /* Without this, some commands which require an active target (such |
2333 | as kill) won't work. This variable serves (at least) double duty | |
2334 | as both the pid of the target process (if it has such), and as a | |
2335 | flag indicating that a target is active. These functions should | |
2336 | be split out into seperate variables, especially since GDB will | |
2337 | someday have a notion of debugging several processes. */ | |
2338 | ||
39f77062 | 2339 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2340 | |
2341 | if (async_p) | |
2342 | { | |
2343 | /* With this target we start out by owning the terminal. */ | |
2344 | remote_async_terminal_ours_p = 1; | |
2345 | ||
2346 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2347 | assumed that the target is already ready and able to respond to | |
2348 | requests. Unfortunately remote_start_remote() eventually calls | |
2349 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2350 | around this. Eventually a mechanism that allows | |
2351 | wait_for_inferior() to expect/get timeouts will be | |
2352 | implemented. */ | |
2353 | wait_forever_enabled_p = 0; | |
2354 | } | |
2355 | ||
f78f6cf1 MS |
2356 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2357 | /* First delete any symbols previously loaded from shared libraries. */ | |
2358 | no_shared_libraries (NULL, 0); | |
2359 | #endif | |
2360 | ||
36918e70 | 2361 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2362 | target (we'd otherwise be in an inconsistent state) and then |
2363 | propogate the error on up the exception chain. This ensures that | |
2364 | the caller doesn't stumble along blindly assuming that the | |
2365 | function succeeded. The CLI doesn't have this problem but other | |
2366 | UI's, such as MI do. | |
36918e70 AC |
2367 | |
2368 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2369 | this function should return an error indication letting the | |
2370 | caller restore the previous state. Unfortunatly the command | |
2371 | ``target remote'' is directly wired to this function making that | |
2372 | impossible. On a positive note, the CLI side of this problem has | |
2373 | been fixed - the function set_cmd_context() makes it possible for | |
2374 | all the ``target ....'' commands to share a common callback | |
2375 | function. See cli-dump.c. */ | |
2376 | ex = catch_exceptions (uiout, | |
2377 | remote_start_remote, NULL, | |
2378 | "Couldn't establish connection to remote" | |
2379 | " target\n", | |
2380 | RETURN_MASK_ALL); | |
2381 | if (ex < 0) | |
c906108c SS |
2382 | { |
2383 | pop_target (); | |
92d1e331 DJ |
2384 | if (async_p) |
2385 | wait_forever_enabled_p = 1; | |
165b8e33 | 2386 | throw_exception (ex); |
c906108c SS |
2387 | } |
2388 | ||
92d1e331 DJ |
2389 | if (async_p) |
2390 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2391 | |
2392 | if (extended_p) | |
43ff13b4 | 2393 | { |
6240bebf | 2394 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2395 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2396 | putpkt ("!"); |
d01949b6 | 2397 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2398 | } |
f78f6cf1 | 2399 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2400 | /* FIXME: need a master target_open vector from which all |
2401 | remote_opens can be called, so that stuff like this can | |
2402 | go there. Failing that, the following code must be copied | |
2403 | to the open function for any remote target that wants to | |
2404 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2405 | |
2406 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2407 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2408 | { |
2409 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2410 | remote_check_symbols (symfile_objfile); | |
2411 | } | |
6240bebf | 2412 | #endif |
43ff13b4 JM |
2413 | } |
2414 | ||
c906108c SS |
2415 | /* This takes a program previously attached to and detaches it. After |
2416 | this is done, GDB can be used to debug some other program. We | |
2417 | better not have left any breakpoints in the target program or it'll | |
2418 | die when it hits one. */ | |
2419 | ||
2420 | static void | |
fba45db2 | 2421 | remote_detach (char *args, int from_tty) |
c906108c | 2422 | { |
d01949b6 AC |
2423 | struct remote_state *rs = get_remote_state (); |
2424 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2425 | |
2426 | if (args) | |
2427 | error ("Argument given to \"detach\" when remotely debugging."); | |
2428 | ||
2429 | /* Tell the remote target to detach. */ | |
2430 | strcpy (buf, "D"); | |
d01949b6 | 2431 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2432 | |
6ad8ae5c DJ |
2433 | /* Unregister the file descriptor from the event loop. */ |
2434 | if (target_is_async_p ()) | |
2435 | serial_async (remote_desc, NULL, 0); | |
2436 | ||
cca728d0 | 2437 | target_mourn_inferior (); |
c906108c SS |
2438 | if (from_tty) |
2439 | puts_filtered ("Ending remote debugging.\n"); | |
2440 | } | |
2441 | ||
6ad8ae5c DJ |
2442 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2443 | ||
43ff13b4 | 2444 | static void |
6ad8ae5c | 2445 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2446 | { |
d01949b6 AC |
2447 | struct remote_state *rs = get_remote_state (); |
2448 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2449 | |
2450 | if (args) | |
2451 | error ("Argument given to \"detach\" when remotely debugging."); | |
2452 | ||
43ff13b4 | 2453 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2454 | if (target_is_async_p ()) |
2cd58942 | 2455 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2456 | |
cca728d0 | 2457 | target_mourn_inferior (); |
43ff13b4 JM |
2458 | if (from_tty) |
2459 | puts_filtered ("Ending remote debugging.\n"); | |
2460 | } | |
2461 | ||
c906108c SS |
2462 | /* Convert hex digit A to a number. */ |
2463 | ||
30559e10 | 2464 | static int |
fba45db2 | 2465 | fromhex (int a) |
c906108c SS |
2466 | { |
2467 | if (a >= '0' && a <= '9') | |
2468 | return a - '0'; | |
2469 | else if (a >= 'a' && a <= 'f') | |
2470 | return a - 'a' + 10; | |
2471 | else if (a >= 'A' && a <= 'F') | |
2472 | return a - 'A' + 10; | |
c5aa993b | 2473 | else |
c906108c SS |
2474 | error ("Reply contains invalid hex digit %d", a); |
2475 | } | |
2476 | ||
30559e10 MS |
2477 | static int |
2478 | hex2bin (const char *hex, char *bin, int count) | |
2479 | { | |
2480 | int i; | |
2481 | ||
30559e10 MS |
2482 | for (i = 0; i < count; i++) |
2483 | { | |
2484 | if (hex[0] == 0 || hex[1] == 0) | |
2485 | { | |
2486 | /* Hex string is short, or of uneven length. | |
2487 | Return the count that has been converted so far. */ | |
2488 | return i; | |
2489 | } | |
2490 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2491 | hex += 2; | |
2492 | } | |
2493 | return i; | |
2494 | } | |
2495 | ||
c906108c SS |
2496 | /* Convert number NIB to a hex digit. */ |
2497 | ||
2498 | static int | |
fba45db2 | 2499 | tohex (int nib) |
c906108c SS |
2500 | { |
2501 | if (nib < 10) | |
c5aa993b | 2502 | return '0' + nib; |
c906108c | 2503 | else |
c5aa993b | 2504 | return 'a' + nib - 10; |
c906108c | 2505 | } |
30559e10 MS |
2506 | |
2507 | static int | |
234fa6d1 | 2508 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2509 | { |
2510 | int i; | |
2511 | /* May use a length, or a nul-terminated string as input. */ | |
2512 | if (count == 0) | |
2513 | count = strlen (bin); | |
2514 | ||
2515 | for (i = 0; i < count; i++) | |
2516 | { | |
2517 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2518 | *hex++ = tohex (*bin++ & 0xf); | |
2519 | } | |
2520 | *hex = 0; | |
2521 | return i; | |
2522 | } | |
c906108c | 2523 | \f |
506fb367 DJ |
2524 | /* Check for the availability of vCont. This function should also check |
2525 | the response. */ | |
c906108c SS |
2526 | |
2527 | static void | |
506fb367 | 2528 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2529 | { |
506fb367 DJ |
2530 | strcpy (buf, "vCont?"); |
2531 | putpkt (buf); | |
2532 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2533 | |
506fb367 DJ |
2534 | /* Make sure that the features we assume are supported. */ |
2535 | if (strncmp (buf, "vCont", 5) == 0) | |
2536 | { | |
2537 | char *p = &buf[5]; | |
2538 | int support_s, support_S, support_c, support_C; | |
2539 | ||
2540 | support_s = 0; | |
2541 | support_S = 0; | |
2542 | support_c = 0; | |
2543 | support_C = 0; | |
2544 | while (p && *p == ';') | |
2545 | { | |
2546 | p++; | |
2547 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2548 | support_s = 1; | |
2549 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2550 | support_S = 1; | |
2551 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2552 | support_c = 1; | |
2553 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2554 | support_C = 1; | |
2555 | ||
2556 | p = strchr (p, ';'); | |
2557 | } | |
c906108c | 2558 | |
506fb367 DJ |
2559 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2560 | BUF will make packet_ok disable the packet. */ | |
2561 | if (!support_s || !support_S || !support_c || !support_C) | |
2562 | buf[0] = 0; | |
2563 | } | |
c906108c | 2564 | |
506fb367 DJ |
2565 | packet_ok (buf, &remote_protocol_vcont); |
2566 | } | |
c906108c | 2567 | |
506fb367 DJ |
2568 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2569 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2570 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2571 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2572 | signalled is given in the global INFERIOR_PTID. This function returns | |
2573 | non-zero iff it resumes the inferior. | |
44eaed12 | 2574 | |
506fb367 DJ |
2575 | This function issues a strict subset of all possible vCont commands at the |
2576 | moment. */ | |
44eaed12 | 2577 | |
506fb367 DJ |
2578 | static int |
2579 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2580 | { | |
2581 | struct remote_state *rs = get_remote_state (); | |
2582 | int pid = PIDGET (ptid); | |
2583 | char *buf = NULL; | |
2584 | struct cleanup *old_cleanup; | |
44eaed12 | 2585 | |
506fb367 DJ |
2586 | buf = xmalloc (rs->remote_packet_size); |
2587 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2588 | |
506fb367 DJ |
2589 | if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN) |
2590 | remote_vcont_probe (rs, buf); | |
44eaed12 | 2591 | |
506fb367 DJ |
2592 | if (remote_protocol_vcont.support == PACKET_DISABLE) |
2593 | { | |
2594 | do_cleanups (old_cleanup); | |
2595 | return 0; | |
44eaed12 C |
2596 | } |
2597 | ||
506fb367 DJ |
2598 | /* If we could generate a wider range of packets, we'd have to worry |
2599 | about overflowing BUF. Should there be a generic | |
2600 | "multi-part-packet" packet? */ | |
2601 | ||
2602 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2603 | { |
506fb367 DJ |
2604 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2605 | don't have any PID numbers the inferior will understand. Make sure | |
2606 | to only send forms that do not specify a PID. */ | |
2607 | if (step && siggnal != TARGET_SIGNAL_0) | |
2608 | sprintf (buf, "vCont;S%02x", siggnal); | |
2609 | else if (step) | |
2610 | sprintf (buf, "vCont;s"); | |
2611 | else if (siggnal != TARGET_SIGNAL_0) | |
2612 | sprintf (buf, "vCont;C%02x", siggnal); | |
2613 | else | |
2614 | sprintf (buf, "vCont;c"); | |
2615 | } | |
2616 | else if (pid == -1) | |
2617 | { | |
2618 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2619 | if (step && siggnal != TARGET_SIGNAL_0) | |
2620 | sprintf (buf, "vCont;S%02x:%x;c", siggnal, PIDGET (inferior_ptid)); | |
2621 | else if (step) | |
2622 | sprintf (buf, "vCont;s:%x;c", PIDGET (inferior_ptid)); | |
2623 | else if (siggnal != TARGET_SIGNAL_0) | |
2624 | sprintf (buf, "vCont;C%02x:%x;c", siggnal, PIDGET (inferior_ptid)); | |
2625 | else | |
2626 | sprintf (buf, "vCont;c"); | |
c906108c SS |
2627 | } |
2628 | else | |
506fb367 DJ |
2629 | { |
2630 | /* Scheduler locking; resume only PTID. */ | |
2631 | if (step && siggnal != TARGET_SIGNAL_0) | |
2632 | sprintf (buf, "vCont;S%02x:%x", siggnal, pid); | |
2633 | else if (step) | |
2634 | sprintf (buf, "vCont;s:%x", pid); | |
2635 | else if (siggnal != TARGET_SIGNAL_0) | |
2636 | sprintf (buf, "vCont;C%02x:%x", siggnal, pid); | |
2637 | else | |
2638 | sprintf (buf, "vCont;c:%x", pid); | |
2639 | } | |
c906108c SS |
2640 | |
2641 | putpkt (buf); | |
506fb367 DJ |
2642 | |
2643 | do_cleanups (old_cleanup); | |
2644 | ||
2645 | return 1; | |
c906108c | 2646 | } |
43ff13b4 | 2647 | |
506fb367 DJ |
2648 | /* Tell the remote machine to resume. */ |
2649 | ||
2650 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2651 | ||
2652 | static int last_sent_step; | |
2653 | ||
43ff13b4 | 2654 | static void |
506fb367 | 2655 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2656 | { |
d01949b6 AC |
2657 | struct remote_state *rs = get_remote_state (); |
2658 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2659 | int pid = PIDGET (ptid); |
44eaed12 | 2660 | char *p; |
43ff13b4 | 2661 | |
43ff13b4 JM |
2662 | last_sent_signal = siggnal; |
2663 | last_sent_step = step; | |
2664 | ||
2665 | /* A hook for when we need to do something at the last moment before | |
2666 | resumption. */ | |
2667 | if (target_resume_hook) | |
2668 | (*target_resume_hook) (); | |
2669 | ||
506fb367 DJ |
2670 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2671 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2672 | return; | |
2673 | ||
2674 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2675 | if (pid == -1) | |
2676 | set_thread (0, 0); /* run any thread */ | |
2677 | else | |
2678 | set_thread (pid, 0); /* run this thread */ | |
2679 | ||
44eaed12 C |
2680 | /* The s/S/c/C packets do not return status. So if the target does |
2681 | not support the S or C packets, the debug agent returns an empty | |
2682 | string which is detected in remote_wait(). This protocol defect | |
2683 | is fixed in the e/E packets. */ | |
2684 | ||
2685 | if (step && step_range_end) | |
2686 | { | |
2687 | /* If the target does not support the 'E' packet, we try the 'S' | |
2688 | packet. Ideally we would fall back to the 'e' packet if that | |
2689 | too is not supported. But that would require another copy of | |
2690 | the code to issue the 'e' packet (and fall back to 's' if not | |
2691 | supported) in remote_wait(). */ | |
2692 | ||
2693 | if (siggnal != TARGET_SIGNAL_0) | |
2694 | { | |
2695 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2696 | { | |
2697 | p = buf; | |
2698 | *p++ = 'E'; | |
2699 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2700 | *p++ = tohex (((int) siggnal) & 0xf); | |
2701 | *p++ = ','; | |
2702 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2703 | *p++ = ','; | |
2704 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2705 | *p++ = 0; | |
2706 | ||
2707 | putpkt (buf); | |
d01949b6 | 2708 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2709 | |
234fa6d1 | 2710 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
506fb367 | 2711 | return; |
44eaed12 C |
2712 | } |
2713 | } | |
2714 | else | |
2715 | { | |
2716 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2717 | { | |
2718 | p = buf; | |
2719 | *p++ = 'e'; | |
2720 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2721 | *p++ = ','; | |
2722 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2723 | *p++ = 0; | |
2724 | ||
2725 | putpkt (buf); | |
d01949b6 | 2726 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2727 | |
234fa6d1 | 2728 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
506fb367 | 2729 | return; |
44eaed12 C |
2730 | } |
2731 | } | |
2732 | } | |
2733 | ||
43ff13b4 JM |
2734 | if (siggnal != TARGET_SIGNAL_0) |
2735 | { | |
2736 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2737 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2738 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2739 | buf[3] = '\0'; |
2740 | } | |
2741 | else | |
c5aa993b | 2742 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2743 | |
44eaed12 | 2744 | putpkt (buf); |
506fb367 DJ |
2745 | } |
2746 | ||
2747 | /* Same as remote_resume, but with async support. */ | |
2748 | static void | |
2749 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2750 | { | |
2751 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2752 | |
2acceee2 JM |
2753 | /* We are about to start executing the inferior, let's register it |
2754 | with the event loop. NOTE: this is the one place where all the | |
2755 | execution commands end up. We could alternatively do this in each | |
2756 | of the execution commands in infcmd.c.*/ | |
2757 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2758 | into infcmd.c in order to allow inferior function calls to work | |
2759 | NOT asynchronously. */ | |
ed9a39eb | 2760 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2761 | target_async (inferior_event_handler, 0); |
2762 | /* Tell the world that the target is now executing. */ | |
2763 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2764 | this? Instead, should the client of target just assume (for | |
2765 | async targets) that the target is going to start executing? Is | |
2766 | this information already found in the continuation block? */ | |
ed9a39eb | 2767 | if (target_is_async_p ()) |
2acceee2 | 2768 | target_executing = 1; |
43ff13b4 | 2769 | } |
c906108c | 2770 | \f |
43ff13b4 JM |
2771 | |
2772 | /* Set up the signal handler for SIGINT, while the target is | |
2773 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2774 | static void | |
fba45db2 | 2775 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2776 | { |
c5aa993b | 2777 | sigint_remote_token = |
43ff13b4 JM |
2778 | create_async_signal_handler (async_remote_interrupt, NULL); |
2779 | signal (SIGINT, handle_remote_sigint); | |
2780 | } | |
2781 | ||
2782 | /* Signal handler for SIGINT, while the target is executing. */ | |
2783 | static void | |
fba45db2 | 2784 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2785 | { |
2786 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2787 | sigint_remote_twice_token = |
43ff13b4 JM |
2788 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2789 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2790 | } | |
2791 | ||
2792 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2793 | sent once. It will take effect the second time that the user sends | |
2794 | a ^C. */ | |
2795 | static void | |
fba45db2 | 2796 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2797 | { |
2798 | signal (sig, handle_sigint); | |
c5aa993b | 2799 | sigint_remote_twice_token = |
2df3850c | 2800 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2801 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2802 | } | |
2803 | ||
6426a772 | 2804 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2805 | to a ^C. */ |
c5aa993b | 2806 | static void |
fba45db2 | 2807 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2808 | { |
2809 | if (remote_debug) | |
2810 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2811 | ||
2812 | target_stop (); | |
2813 | } | |
2814 | ||
2815 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2816 | up on the target alltogether. */ | |
2df3850c | 2817 | void |
fba45db2 | 2818 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2819 | { |
2df3850c JM |
2820 | if (remote_debug) |
2821 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2822 | /* Do something only if the target was not killed by the previous |
2823 | cntl-C. */ | |
2824 | if (target_executing) | |
2825 | { | |
2826 | interrupt_query (); | |
2827 | signal (SIGINT, handle_remote_sigint); | |
2828 | } | |
43ff13b4 JM |
2829 | } |
2830 | ||
2831 | /* Reinstall the usual SIGINT handlers, after the target has | |
2832 | stopped. */ | |
6426a772 JM |
2833 | static void |
2834 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2835 | { |
2836 | signal (SIGINT, handle_sigint); | |
2837 | if (sigint_remote_twice_token) | |
c2c6d25f | 2838 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2839 | if (sigint_remote_token) |
c2c6d25f | 2840 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2841 | } |
2842 | ||
c906108c SS |
2843 | /* Send ^C to target to halt it. Target will respond, and send us a |
2844 | packet. */ | |
507f3c78 | 2845 | static void (*ofunc) (int); |
c906108c | 2846 | |
7a292a7a SS |
2847 | /* The command line interface's stop routine. This function is installed |
2848 | as a signal handler for SIGINT. The first time a user requests a | |
2849 | stop, we call remote_stop to send a break or ^C. If there is no | |
2850 | response from the target (it didn't stop when the user requested it), | |
2851 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2852 | static void |
fba45db2 | 2853 | remote_interrupt (int signo) |
c906108c | 2854 | { |
7a292a7a SS |
2855 | /* If this doesn't work, try more severe steps. */ |
2856 | signal (signo, remote_interrupt_twice); | |
2857 | ||
2858 | if (remote_debug) | |
0f71a2f6 | 2859 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2860 | |
2861 | target_stop (); | |
2862 | } | |
2863 | ||
2864 | /* The user typed ^C twice. */ | |
2865 | ||
2866 | static void | |
fba45db2 | 2867 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2868 | { |
2869 | signal (signo, ofunc); | |
2870 | interrupt_query (); | |
c906108c SS |
2871 | signal (signo, remote_interrupt); |
2872 | } | |
7a292a7a SS |
2873 | |
2874 | /* This is the generic stop called via the target vector. When a target | |
2875 | interrupt is requested, either by the command line or the GUI, we | |
2876 | will eventually end up here. */ | |
c906108c | 2877 | static void |
fba45db2 | 2878 | remote_stop (void) |
c906108c | 2879 | { |
7a292a7a SS |
2880 | /* Send a break or a ^C, depending on user preference. */ |
2881 | if (remote_debug) | |
0f71a2f6 | 2882 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2883 | |
7a292a7a | 2884 | if (remote_break) |
2cd58942 | 2885 | serial_send_break (remote_desc); |
c906108c | 2886 | else |
2cd58942 | 2887 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2888 | } |
2889 | ||
2890 | /* Ask the user what to do when an interrupt is received. */ | |
2891 | ||
2892 | static void | |
fba45db2 | 2893 | interrupt_query (void) |
c906108c SS |
2894 | { |
2895 | target_terminal_ours (); | |
2896 | ||
2897 | if (query ("Interrupted while waiting for the program.\n\ | |
2898 | Give up (and stop debugging it)? ")) | |
2899 | { | |
2900 | target_mourn_inferior (); | |
b5a2688f | 2901 | throw_exception (RETURN_QUIT); |
c906108c SS |
2902 | } |
2903 | ||
2904 | target_terminal_inferior (); | |
2905 | } | |
2906 | ||
6426a772 JM |
2907 | /* Enable/disable target terminal ownership. Most targets can use |
2908 | terminal groups to control terminal ownership. Remote targets are | |
2909 | different in that explicit transfer of ownership to/from GDB/target | |
2910 | is required. */ | |
2911 | ||
2912 | static void | |
2913 | remote_async_terminal_inferior (void) | |
2914 | { | |
2915 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2916 | sync_execution here. This function should only be called when | |
2917 | GDB is resuming the inferior in the forground. A background | |
2918 | resume (``run&'') should leave GDB in control of the terminal and | |
2919 | consequently should not call this code. */ | |
2920 | if (!sync_execution) | |
2921 | return; | |
2922 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2923 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2924 | to an asynchronous target with a synchronous command calls this | |
2925 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2926 | stops trying to transfer the terminal to the target when it | |
2927 | shouldn't this guard can go away. */ | |
2928 | if (!remote_async_terminal_ours_p) | |
2929 | return; | |
2930 | delete_file_handler (input_fd); | |
2931 | remote_async_terminal_ours_p = 0; | |
2932 | initialize_sigint_signal_handler (); | |
2933 | /* NOTE: At this point we could also register our selves as the | |
2934 | recipient of all input. Any characters typed could then be | |
2935 | passed on down to the target. */ | |
2936 | } | |
2937 | ||
2938 | static void | |
2939 | remote_async_terminal_ours (void) | |
2940 | { | |
2941 | /* See FIXME in remote_async_terminal_inferior. */ | |
2942 | if (!sync_execution) | |
2943 | return; | |
2944 | /* See FIXME in remote_async_terminal_inferior. */ | |
2945 | if (remote_async_terminal_ours_p) | |
2946 | return; | |
2947 | cleanup_sigint_signal_handler (NULL); | |
2948 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2949 | remote_async_terminal_ours_p = 1; | |
2950 | } | |
2951 | ||
c906108c SS |
2952 | /* If nonzero, ignore the next kill. */ |
2953 | ||
2954 | int kill_kludge; | |
2955 | ||
2956 | void | |
917317f4 | 2957 | remote_console_output (char *msg) |
c906108c SS |
2958 | { |
2959 | char *p; | |
2960 | ||
c5aa993b | 2961 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2962 | { |
2963 | char tb[2]; | |
2964 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2965 | tb[0] = c; | |
2966 | tb[1] = 0; | |
43ff13b4 | 2967 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2968 | } |
917317f4 | 2969 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2970 | } |
2971 | ||
0f71a2f6 JM |
2972 | /* Wait until the remote machine stops, then return, |
2973 | storing status in STATUS just as `wait' would. | |
2974 | Returns "pid", which in the case of a multi-threaded | |
2975 | remote OS, is the thread-id. */ | |
c906108c | 2976 | |
39f77062 KB |
2977 | static ptid_t |
2978 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2979 | { |
d01949b6 AC |
2980 | struct remote_state *rs = get_remote_state (); |
2981 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2982 | ULONGEST thread_num = -1; |
3c3bea1c | 2983 | ULONGEST addr; |
c906108c SS |
2984 | |
2985 | status->kind = TARGET_WAITKIND_EXITED; | |
2986 | status->value.integer = 0; | |
2987 | ||
2988 | while (1) | |
2989 | { | |
2990 | unsigned char *p; | |
2991 | ||
c906108c | 2992 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2993 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2994 | signal (SIGINT, ofunc); |
2995 | ||
2996 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2997 | collection of trace data) every time the target stops. */ |
c906108c SS |
2998 | if (target_wait_loop_hook) |
2999 | (*target_wait_loop_hook) (); | |
3000 | ||
3c3bea1c GS |
3001 | remote_stopped_by_watchpoint_p = 0; |
3002 | ||
c906108c SS |
3003 | switch (buf[0]) |
3004 | { | |
3005 | case 'E': /* Error of some sort */ | |
3006 | warning ("Remote failure reply: %s", buf); | |
3007 | continue; | |
449092f6 CV |
3008 | case 'F': /* File-I/O request */ |
3009 | remote_fileio_request (buf); | |
3010 | continue; | |
c906108c SS |
3011 | case 'T': /* Status with PC, SP, FP, ... */ |
3012 | { | |
3013 | int i; | |
d9d9c31f | 3014 | char regs[MAX_REGISTER_SIZE]; |
c906108c SS |
3015 | |
3016 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3017 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3018 | ss = signal number |
3019 | n... = register number | |
3020 | r... = register contents | |
3021 | */ | |
c906108c SS |
3022 | p = &buf[3]; /* after Txx */ |
3023 | ||
3024 | while (*p) | |
3025 | { | |
3026 | unsigned char *p1; | |
3027 | char *p_temp; | |
97345198 | 3028 | int fieldsize; |
3c3bea1c GS |
3029 | LONGEST pnum = 0; |
3030 | ||
3031 | /* If the packet contains a register number save it in pnum | |
3032 | and set p1 to point to the character following it. | |
3033 | Otherwise p1 points to p. */ | |
c906108c | 3034 | |
3c3bea1c GS |
3035 | /* If this packet is an awatch packet, don't parse the 'a' |
3036 | as a register number. */ | |
3037 | ||
3038 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3039 | { | |
3040 | /* Read the ``P'' register number. */ | |
3041 | pnum = strtol (p, &p_temp, 16); | |
3042 | p1 = (unsigned char *) p_temp; | |
3043 | } | |
3044 | else | |
3045 | p1 = p; | |
c906108c | 3046 | |
c5aa993b | 3047 | if (p1 == p) /* No register number present here */ |
c906108c | 3048 | { |
3c3bea1c | 3049 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c SS |
3050 | if (p1 == NULL) |
3051 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3052 | Packet: '%s'\n", | |
3053 | p, buf); | |
3c3bea1c | 3054 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3055 | { |
3056 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3057 | record_currthread (thread_num); | |
3058 | p = (unsigned char *) p_temp; | |
3059 | } | |
3c3bea1c GS |
3060 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3061 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3062 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3063 | { | |
3064 | remote_stopped_by_watchpoint_p = 1; | |
3065 | p = unpack_varlen_hex (++p1, &addr); | |
3066 | remote_watch_data_address = (CORE_ADDR)addr; | |
3067 | } | |
3068 | else | |
3069 | { | |
3070 | /* Silently skip unknown optional info. */ | |
3071 | p_temp = strchr (p1 + 1, ';'); | |
3072 | if (p_temp) | |
3073 | p = (unsigned char *) p_temp; | |
3074 | } | |
c906108c SS |
3075 | } |
3076 | else | |
3077 | { | |
ad10f812 | 3078 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
3079 | p = p1; |
3080 | ||
3081 | if (*p++ != ':') | |
3fcb8548 AC |
3082 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
3083 | p, buf); | |
c906108c | 3084 | |
ad10f812 | 3085 | if (reg == NULL) |
3fcb8548 AC |
3086 | error ("Remote sent bad register number %s: %s\nPacket: '%s'\n", |
3087 | phex_nz (pnum, 0), p, buf); | |
c906108c | 3088 | |
12c266ea | 3089 | fieldsize = hex2bin (p, regs, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)); |
97345198 | 3090 | p += 2 * fieldsize; |
12c266ea | 3091 | if (fieldsize < DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3092 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3093 | supply_register (reg->regnum, regs); |
c906108c SS |
3094 | } |
3095 | ||
3096 | if (*p++ != ';') | |
3fcb8548 | 3097 | error ("Remote register badly formatted: %s\nhere: %s", buf, p); |
c906108c SS |
3098 | } |
3099 | } | |
3100 | /* fall through */ | |
3101 | case 'S': /* Old style status, just signal only */ | |
3102 | status->kind = TARGET_WAITKIND_STOPPED; | |
3103 | status->value.sig = (enum target_signal) | |
3104 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3105 | ||
0f71a2f6 JM |
3106 | if (buf[3] == 'p') |
3107 | { | |
3108 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3109 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3110 | |
3111 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3112 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3113 | value_from_string ("PDEBUG-")); |
3114 | cisco_kernel_mode = 0; | |
3115 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3116 | record_currthread (thread_num); | |
3117 | } | |
3118 | else if (buf[3] == 'k') | |
3119 | { | |
3120 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3121 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3122 | |
3123 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3124 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3125 | value_from_string ("KDEBUG-")); |
3126 | cisco_kernel_mode = 1; | |
3127 | } | |
c906108c | 3128 | goto got_status; |
0f71a2f6 JM |
3129 | case 'N': /* Cisco special: status and offsets */ |
3130 | { | |
3131 | bfd_vma text_addr, data_addr, bss_addr; | |
3132 | bfd_signed_vma text_off, data_off, bss_off; | |
3133 | unsigned char *p1; | |
3134 | ||
3135 | status->kind = TARGET_WAITKIND_STOPPED; | |
3136 | status->value.sig = (enum target_signal) | |
3137 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3138 | ||
c5aa993b | 3139 | if (symfile_objfile == NULL) |
0f71a2f6 | 3140 | { |
d4f3574e | 3141 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
3142 | Packet Dropped"); |
3143 | goto got_status; | |
3144 | } | |
3145 | ||
3146 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3147 | * where AA is the signal number, TT is the new text | |
3148 | * address, DD * is the new data address, and BB is the | |
3149 | * new bss address. */ | |
3150 | ||
3151 | p = &buf[3]; | |
3152 | text_addr = strtoul (p, (char **) &p1, 16); | |
3153 | if (p1 == p || *p1 != ';') | |
3154 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3155 | p = p1 + 1; | |
3156 | data_addr = strtoul (p, (char **) &p1, 16); | |
3157 | if (p1 == p || *p1 != ';') | |
3158 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3159 | p = p1 + 1; | |
3160 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3161 | if (p1 == p) |
0f71a2f6 JM |
3162 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3163 | ||
3164 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3165 | &text_off, &data_off, &bss_off) | |
3166 | == 0) | |
c5aa993b | 3167 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
3168 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3169 | ||
3170 | goto got_status; | |
3171 | } | |
c906108c SS |
3172 | case 'W': /* Target exited */ |
3173 | { | |
3174 | /* The remote process exited. */ | |
3175 | status->kind = TARGET_WAITKIND_EXITED; | |
3176 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3177 | goto got_status; | |
3178 | } | |
3179 | case 'X': | |
3180 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3181 | status->value.sig = (enum target_signal) | |
3182 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3183 | kill_kludge = 1; | |
3184 | ||
3185 | goto got_status; | |
3186 | case 'O': /* Console output */ | |
3187 | remote_console_output (buf + 1); | |
3188 | continue; | |
3189 | case '\0': | |
3190 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3191 | { | |
3192 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3193 | the remote system doesn't support it. */ |
c906108c SS |
3194 | target_terminal_ours_for_output (); |
3195 | printf_filtered | |
3196 | ("Can't send signals to this remote system. %s not sent.\n", | |
3197 | target_signal_to_name (last_sent_signal)); | |
3198 | last_sent_signal = TARGET_SIGNAL_0; | |
3199 | target_terminal_inferior (); | |
3200 | ||
3201 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3202 | putpkt ((char *) buf); | |
3203 | continue; | |
3204 | } | |
3205 | /* else fallthrough */ | |
3206 | default: | |
3207 | warning ("Invalid remote reply: %s", buf); | |
3208 | continue; | |
3209 | } | |
3210 | } | |
c5aa993b | 3211 | got_status: |
c906108c SS |
3212 | if (thread_num != -1) |
3213 | { | |
39f77062 | 3214 | return pid_to_ptid (thread_num); |
c906108c | 3215 | } |
39f77062 | 3216 | return inferior_ptid; |
c906108c SS |
3217 | } |
3218 | ||
43ff13b4 | 3219 | /* Async version of remote_wait. */ |
39f77062 KB |
3220 | static ptid_t |
3221 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3222 | { |
d01949b6 AC |
3223 | struct remote_state *rs = get_remote_state (); |
3224 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 3225 | ULONGEST thread_num = -1; |
3c3bea1c | 3226 | ULONGEST addr; |
43ff13b4 JM |
3227 | |
3228 | status->kind = TARGET_WAITKIND_EXITED; | |
3229 | status->value.integer = 0; | |
3230 | ||
3c3bea1c GS |
3231 | remote_stopped_by_watchpoint_p = 0; |
3232 | ||
43ff13b4 JM |
3233 | while (1) |
3234 | { | |
3235 | unsigned char *p; | |
c5aa993b | 3236 | |
ed9a39eb | 3237 | if (!target_is_async_p ()) |
43ff13b4 | 3238 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3239 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3240 | _never_ wait for ever -> test on target_is_async_p(). | |
3241 | However, before we do that we need to ensure that the caller | |
3242 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 3243 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3244 | if (!target_is_async_p ()) |
43ff13b4 JM |
3245 | signal (SIGINT, ofunc); |
3246 | ||
3247 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3248 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
3249 | if (target_wait_loop_hook) |
3250 | (*target_wait_loop_hook) (); | |
3251 | ||
3252 | switch (buf[0]) | |
3253 | { | |
3254 | case 'E': /* Error of some sort */ | |
3255 | warning ("Remote failure reply: %s", buf); | |
3256 | continue; | |
449092f6 CV |
3257 | case 'F': /* File-I/O request */ |
3258 | remote_fileio_request (buf); | |
3259 | continue; | |
43ff13b4 JM |
3260 | case 'T': /* Status with PC, SP, FP, ... */ |
3261 | { | |
3262 | int i; | |
d9d9c31f | 3263 | char regs[MAX_REGISTER_SIZE]; |
43ff13b4 JM |
3264 | |
3265 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3266 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3267 | ss = signal number |
3268 | n... = register number | |
3269 | r... = register contents | |
3270 | */ | |
43ff13b4 JM |
3271 | p = &buf[3]; /* after Txx */ |
3272 | ||
3273 | while (*p) | |
3274 | { | |
3275 | unsigned char *p1; | |
3276 | char *p_temp; | |
6c3f2dbf | 3277 | int fieldsize; |
3c3bea1c | 3278 | long pnum = 0; |
43ff13b4 | 3279 | |
3c3bea1c GS |
3280 | /* If the packet contains a register number, save it in pnum |
3281 | and set p1 to point to the character following it. | |
3282 | Otherwise p1 points to p. */ | |
3283 | ||
3284 | /* If this packet is an awatch packet, don't parse the 'a' | |
3285 | as a register number. */ | |
3286 | ||
3287 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) | |
3288 | { | |
3289 | /* Read the register number. */ | |
3290 | pnum = strtol (p, &p_temp, 16); | |
3291 | p1 = (unsigned char *) p_temp; | |
3292 | } | |
3293 | else | |
3294 | p1 = p; | |
43ff13b4 | 3295 | |
c5aa993b | 3296 | if (p1 == p) /* No register number present here */ |
43ff13b4 | 3297 | { |
3c3bea1c | 3298 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 | 3299 | if (p1 == NULL) |
3fcb8548 AC |
3300 | error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n", |
3301 | p, buf); | |
3c3bea1c | 3302 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3303 | { |
3304 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3305 | record_currthread (thread_num); | |
3306 | p = (unsigned char *) p_temp; | |
3307 | } | |
3c3bea1c GS |
3308 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3309 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3310 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3311 | { | |
3312 | remote_stopped_by_watchpoint_p = 1; | |
3313 | p = unpack_varlen_hex (++p1, &addr); | |
3314 | remote_watch_data_address = (CORE_ADDR)addr; | |
3315 | } | |
3316 | else | |
3317 | { | |
3318 | /* Silently skip unknown optional info. */ | |
3319 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3320 | if (p_temp) | |
3321 | p = p_temp; | |
3322 | } | |
43ff13b4 | 3323 | } |
3c3bea1c | 3324 | |
43ff13b4 JM |
3325 | else |
3326 | { | |
ad10f812 | 3327 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3328 | p = p1; |
43ff13b4 | 3329 | if (*p++ != ':') |
3fcb8548 AC |
3330 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
3331 | p, buf); | |
43ff13b4 | 3332 | |
ad10f812 | 3333 | if (reg == NULL) |
3fcb8548 AC |
3334 | error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n", |
3335 | pnum, p, buf); | |
43ff13b4 | 3336 | |
12c266ea | 3337 | fieldsize = hex2bin (p, regs, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)); |
6c3f2dbf | 3338 | p += 2 * fieldsize; |
12c266ea | 3339 | if (fieldsize < DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3340 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3341 | supply_register (reg->regnum, regs); |
43ff13b4 JM |
3342 | } |
3343 | ||
3344 | if (*p++ != ';') | |
0a2cfde4 AC |
3345 | error ("Remote register badly formatted: %s\nhere: %s", |
3346 | buf, p); | |
43ff13b4 JM |
3347 | } |
3348 | } | |
3349 | /* fall through */ | |
3350 | case 'S': /* Old style status, just signal only */ | |
3351 | status->kind = TARGET_WAITKIND_STOPPED; | |
3352 | status->value.sig = (enum target_signal) | |
3353 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3354 | ||
3355 | if (buf[3] == 'p') | |
3356 | { | |
3357 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3358 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3359 | |
3360 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3361 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3362 | value_from_string ("PDEBUG-")); |
3363 | cisco_kernel_mode = 0; | |
3364 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3365 | record_currthread (thread_num); | |
3366 | } | |
3367 | else if (buf[3] == 'k') | |
3368 | { | |
3369 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3370 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3371 | |
3372 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3373 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3374 | value_from_string ("KDEBUG-")); |
3375 | cisco_kernel_mode = 1; | |
3376 | } | |
3377 | goto got_status; | |
3378 | case 'N': /* Cisco special: status and offsets */ | |
3379 | { | |
3380 | bfd_vma text_addr, data_addr, bss_addr; | |
3381 | bfd_signed_vma text_off, data_off, bss_off; | |
3382 | unsigned char *p1; | |
3383 | ||
3384 | status->kind = TARGET_WAITKIND_STOPPED; | |
3385 | status->value.sig = (enum target_signal) | |
3386 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3387 | ||
c5aa993b | 3388 | if (symfile_objfile == NULL) |
43ff13b4 JM |
3389 | { |
3390 | warning ("Relocation packet recieved with no symbol file. \ | |
3391 | Packet Dropped"); | |
3392 | goto got_status; | |
3393 | } | |
3394 | ||
3395 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3396 | * where AA is the signal number, TT is the new text | |
3397 | * address, DD * is the new data address, and BB is the | |
3398 | * new bss address. */ | |
3399 | ||
3400 | p = &buf[3]; | |
3401 | text_addr = strtoul (p, (char **) &p1, 16); | |
3402 | if (p1 == p || *p1 != ';') | |
3403 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3404 | p = p1 + 1; | |
3405 | data_addr = strtoul (p, (char **) &p1, 16); | |
3406 | if (p1 == p || *p1 != ';') | |
3407 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3408 | p = p1 + 1; | |
3409 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3410 | if (p1 == p) |
43ff13b4 JM |
3411 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3412 | ||
3413 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3414 | &text_off, &data_off, &bss_off) | |
3415 | == 0) | |
c5aa993b | 3416 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
3417 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3418 | ||
3419 | goto got_status; | |
3420 | } | |
3421 | case 'W': /* Target exited */ | |
3422 | { | |
3423 | /* The remote process exited. */ | |
3424 | status->kind = TARGET_WAITKIND_EXITED; | |
3425 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3426 | goto got_status; | |
3427 | } | |
3428 | case 'X': | |
3429 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3430 | status->value.sig = (enum target_signal) | |
3431 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3432 | kill_kludge = 1; | |
3433 | ||
3434 | goto got_status; | |
3435 | case 'O': /* Console output */ | |
3436 | remote_console_output (buf + 1); | |
c4093a6a JM |
3437 | /* Return immediately to the event loop. The event loop will |
3438 | still be waiting on the inferior afterwards. */ | |
3439 | status->kind = TARGET_WAITKIND_IGNORE; | |
3440 | goto got_status; | |
43ff13b4 JM |
3441 | case '\0': |
3442 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3443 | { | |
3444 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3445 | the remote system doesn't support it. */ |
43ff13b4 JM |
3446 | target_terminal_ours_for_output (); |
3447 | printf_filtered | |
3448 | ("Can't send signals to this remote system. %s not sent.\n", | |
3449 | target_signal_to_name (last_sent_signal)); | |
3450 | last_sent_signal = TARGET_SIGNAL_0; | |
3451 | target_terminal_inferior (); | |
3452 | ||
3453 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3454 | putpkt ((char *) buf); | |
3455 | continue; | |
3456 | } | |
3457 | /* else fallthrough */ | |
3458 | default: | |
3459 | warning ("Invalid remote reply: %s", buf); | |
3460 | continue; | |
3461 | } | |
3462 | } | |
c5aa993b | 3463 | got_status: |
43ff13b4 JM |
3464 | if (thread_num != -1) |
3465 | { | |
39f77062 | 3466 | return pid_to_ptid (thread_num); |
43ff13b4 | 3467 | } |
39f77062 | 3468 | return inferior_ptid; |
43ff13b4 JM |
3469 | } |
3470 | ||
c906108c SS |
3471 | /* Number of bytes of registers this stub implements. */ |
3472 | ||
3473 | static int register_bytes_found; | |
3474 | ||
3475 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3476 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3477 | |
c906108c | 3478 | static void |
ad10f812 | 3479 | remote_fetch_registers (int regnum) |
c906108c | 3480 | { |
d01949b6 AC |
3481 | struct remote_state *rs = get_remote_state (); |
3482 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3483 | int i; |
3484 | char *p; | |
ad10f812 | 3485 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3486 | |
39f77062 | 3487 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3488 | |
b323314b AC |
3489 | if (regnum >= 0) |
3490 | { | |
3491 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3492 | gdb_assert (reg != NULL); | |
3493 | if (!reg->in_g_packet) | |
3494 | internal_error (__FILE__, __LINE__, | |
3495 | "Attempt to fetch a non G-packet register when this " | |
3496 | "remote.c does not support the p-packet."); | |
3497 | } | |
3498 | ||
c906108c | 3499 | sprintf (buf, "g"); |
d01949b6 | 3500 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3501 | |
11cf8741 JM |
3502 | /* Save the size of the packet sent to us by the target. Its used |
3503 | as a heuristic when determining the max size of packets that the | |
3504 | target can safely receive. */ | |
d01949b6 AC |
3505 | if ((rs->actual_register_packet_size) == 0) |
3506 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3507 | |
3508 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3509 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3510 | |
3511 | /* We can get out of synch in various cases. If the first character | |
3512 | in the buffer is not a hex character, assume that has happened | |
3513 | and try to fetch another packet to read. */ | |
3514 | while ((buf[0] < '0' || buf[0] > '9') | |
3515 | && (buf[0] < 'a' || buf[0] > 'f') | |
3516 | && buf[0] != 'x') /* New: unavailable register value */ | |
3517 | { | |
3518 | if (remote_debug) | |
0f71a2f6 JM |
3519 | fprintf_unfiltered (gdb_stdlog, |
3520 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3521 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3522 | } |
3523 | ||
3524 | /* Reply describes registers byte by byte, each byte encoded as two | |
3525 | hex characters. Suck them all up, then supply them to the | |
3526 | register cacheing/storage mechanism. */ | |
3527 | ||
3528 | p = buf; | |
ad10f812 | 3529 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3530 | { |
3531 | if (p[0] == 0) | |
3532 | break; | |
3533 | if (p[1] == 0) | |
3534 | { | |
3535 | warning ("Remote reply is of odd length: %s", buf); | |
3536 | /* Don't change register_bytes_found in this case, and don't | |
3537 | print a second warning. */ | |
3538 | goto supply_them; | |
3539 | } | |
3540 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3541 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3542 | else |
3543 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3544 | p += 2; | |
3545 | } | |
3546 | ||
3547 | if (i != register_bytes_found) | |
3548 | { | |
3549 | register_bytes_found = i; | |
2649061d AC |
3550 | if (REGISTER_BYTES_OK_P () |
3551 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3552 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3553 | } |
c5aa993b | 3554 | |
b323314b | 3555 | supply_them: |
ad10f812 | 3556 | { |
b323314b AC |
3557 | int i; |
3558 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3559 | { |
b323314b AC |
3560 | struct packet_reg *r = &rs->regs[i]; |
3561 | if (r->in_g_packet) | |
3562 | { | |
3563 | supply_register (r->regnum, regs + r->offset); | |
3564 | if (buf[r->offset * 2] == 'x') | |
3565 | set_register_cached (i, -1); | |
3566 | } | |
ad10f812 AC |
3567 | } |
3568 | } | |
c906108c SS |
3569 | } |
3570 | ||
3571 | /* Prepare to store registers. Since we may send them all (using a | |
3572 | 'G' request), we have to read out the ones we don't want to change | |
3573 | first. */ | |
3574 | ||
c5aa993b | 3575 | static void |
fba45db2 | 3576 | remote_prepare_to_store (void) |
c906108c | 3577 | { |
cf0e1e0d DJ |
3578 | struct remote_state *rs = get_remote_state (); |
3579 | int i; | |
3580 | char buf[MAX_REGISTER_SIZE]; | |
3581 | ||
c906108c | 3582 | /* Make sure the entire registers array is valid. */ |
5a2468f5 JM |
3583 | switch (remote_protocol_P.support) |
3584 | { | |
3585 | case PACKET_DISABLE: | |
3586 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3587 | /* Make sure all the necessary registers are cached. */ |
3588 | for (i = 0; i < NUM_REGS; i++) | |
3589 | if (rs->regs[i].in_g_packet) | |
3590 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3591 | break; |
3592 | case PACKET_ENABLE: | |
3593 | break; | |
3594 | } | |
3595 | } | |
3596 | ||
ad10f812 | 3597 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
5a2468f5 JM |
3598 | packet was not recognized. */ |
3599 | ||
3600 | static int | |
ad10f812 | 3601 | store_register_using_P (int regnum) |
5a2468f5 | 3602 | { |
d01949b6 | 3603 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3604 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3605 | /* Try storing a single register. */ |
d01949b6 | 3606 | char *buf = alloca (rs->remote_packet_size); |
d9d9c31f | 3607 | char regp[MAX_REGISTER_SIZE]; |
5a2468f5 JM |
3608 | char *p; |
3609 | int i; | |
3610 | ||
ad10f812 | 3611 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3612 | p = buf + strlen (buf); |
ad10f812 | 3613 | regcache_collect (reg->regnum, regp); |
12c266ea | 3614 | bin2hex (regp, p, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)); |
ad10f812 | 3615 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3616 | |
3617 | return buf[0] != '\0'; | |
c906108c SS |
3618 | } |
3619 | ||
5a2468f5 | 3620 | |
ad10f812 | 3621 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents |
7302a204 | 3622 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3623 | |
3624 | static void | |
ad10f812 | 3625 | remote_store_registers (int regnum) |
c906108c | 3626 | { |
d01949b6 | 3627 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3628 | char *buf; |
3629 | char *regs; | |
c906108c SS |
3630 | int i; |
3631 | char *p; | |
3632 | ||
39f77062 | 3633 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3634 | |
ad10f812 | 3635 | if (regnum >= 0) |
c906108c | 3636 | { |
5a2468f5 | 3637 | switch (remote_protocol_P.support) |
c906108c | 3638 | { |
5a2468f5 JM |
3639 | case PACKET_DISABLE: |
3640 | break; | |
3641 | case PACKET_ENABLE: | |
ad10f812 | 3642 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3643 | return; |
3644 | else | |
3645 | error ("Protocol error: P packet not recognized by stub"); | |
3646 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3647 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3648 | { |
3649 | /* The stub recognized the 'P' packet. Remember this. */ | |
3650 | remote_protocol_P.support = PACKET_ENABLE; | |
3651 | return; | |
3652 | } | |
3653 | else | |
3654 | { | |
3655 | /* The stub does not support the 'P' packet. Use 'G' | |
3656 | instead, and don't try using 'P' in the future (it | |
3657 | will just waste our time). */ | |
3658 | remote_protocol_P.support = PACKET_DISABLE; | |
3659 | break; | |
3660 | } | |
c906108c | 3661 | } |
c906108c SS |
3662 | } |
3663 | ||
193cb69f AC |
3664 | /* Extract all the registers in the regcache copying them into a |
3665 | local buffer. */ | |
3666 | { | |
b323314b | 3667 | int i; |
ad10f812 AC |
3668 | regs = alloca (rs->sizeof_g_packet); |
3669 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3670 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3671 | { |
b323314b AC |
3672 | struct packet_reg *r = &rs->regs[i]; |
3673 | if (r->in_g_packet) | |
3674 | regcache_collect (r->regnum, regs + r->offset); | |
193cb69f AC |
3675 | } |
3676 | } | |
c906108c SS |
3677 | |
3678 | /* Command describes registers byte by byte, | |
3679 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3680 | buf = alloca (rs->remote_packet_size); |
3681 | p = buf; | |
3682 | *p++ = 'G'; | |
c906108c | 3683 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3684 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3685 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3686 | } |
c906108c SS |
3687 | \f |
3688 | ||
3689 | /* Return the number of hex digits in num. */ | |
3690 | ||
3691 | static int | |
fba45db2 | 3692 | hexnumlen (ULONGEST num) |
c906108c SS |
3693 | { |
3694 | int i; | |
3695 | ||
3696 | for (i = 0; num != 0; i++) | |
3697 | num >>= 4; | |
3698 | ||
3699 | return max (i, 1); | |
3700 | } | |
3701 | ||
2df3850c | 3702 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3703 | |
3704 | static int | |
fba45db2 | 3705 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3706 | { |
c906108c | 3707 | int len = hexnumlen (num); |
2df3850c JM |
3708 | return hexnumnstr (buf, num, len); |
3709 | } | |
3710 | ||
c906108c | 3711 | |
2df3850c | 3712 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3713 | |
2df3850c | 3714 | static int |
fba45db2 | 3715 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3716 | { |
3717 | int i; | |
3718 | ||
3719 | buf[width] = '\0'; | |
3720 | ||
3721 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3722 | { |
c5aa993b | 3723 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3724 | num >>= 4; |
3725 | } | |
3726 | ||
2df3850c | 3727 | return width; |
c906108c SS |
3728 | } |
3729 | ||
3730 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3731 | ||
3732 | static CORE_ADDR | |
fba45db2 | 3733 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3734 | { |
3735 | if (remote_address_size > 0 | |
3736 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3737 | { | |
3738 | /* Only create a mask when that mask can safely be constructed | |
3739 | in a ULONGEST variable. */ | |
3740 | ULONGEST mask = 1; | |
3741 | mask = (mask << remote_address_size) - 1; | |
3742 | addr &= mask; | |
3743 | } | |
3744 | return addr; | |
3745 | } | |
3746 | ||
3747 | /* Determine whether the remote target supports binary downloading. | |
3748 | This is accomplished by sending a no-op memory write of zero length | |
3749 | to the target at the specified address. It does not suffice to send | |
3750 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3751 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3752 | ||
96baa820 JM |
3753 | NOTE: This can still lose if the serial line is not eight-bit |
3754 | clean. In cases like this, the user should clear "remote | |
3755 | X-packet". */ | |
3756 | ||
c906108c | 3757 | static void |
fba45db2 | 3758 | check_binary_download (CORE_ADDR addr) |
c906108c | 3759 | { |
d01949b6 | 3760 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3761 | switch (remote_protocol_binary_download.support) |
c906108c | 3762 | { |
96baa820 JM |
3763 | case PACKET_DISABLE: |
3764 | break; | |
3765 | case PACKET_ENABLE: | |
3766 | break; | |
3767 | case PACKET_SUPPORT_UNKNOWN: | |
3768 | { | |
d01949b6 | 3769 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
3770 | char *p; |
3771 | ||
3772 | p = buf; | |
3773 | *p++ = 'X'; | |
3774 | p += hexnumstr (p, (ULONGEST) addr); | |
3775 | *p++ = ','; | |
3776 | p += hexnumstr (p, (ULONGEST) 0); | |
3777 | *p++ = ':'; | |
3778 | *p = '\0'; | |
3779 | ||
3780 | putpkt_binary (buf, (int) (p - buf)); | |
d01949b6 | 3781 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3782 | |
96baa820 JM |
3783 | if (buf[0] == '\0') |
3784 | { | |
3785 | if (remote_debug) | |
3786 | fprintf_unfiltered (gdb_stdlog, | |
3787 | "binary downloading NOT suppported by target\n"); | |
3788 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3789 | } | |
3790 | else | |
3791 | { | |
3792 | if (remote_debug) | |
3793 | fprintf_unfiltered (gdb_stdlog, | |
3794 | "binary downloading suppported by target\n"); | |
3795 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3796 | } | |
3797 | break; | |
3798 | } | |
c906108c SS |
3799 | } |
3800 | } | |
3801 | ||
3802 | /* Write memory data directly to the remote machine. | |
3803 | This does not inform the data cache; the data cache uses this. | |
3804 | MEMADDR is the address in the remote memory space. | |
3805 | MYADDR is the address of the buffer in our space. | |
3806 | LEN is the number of bytes. | |
3807 | ||
917317f4 JM |
3808 | Returns number of bytes transferred, or 0 (setting errno) for |
3809 | error. Only transfer a single packet. */ | |
c906108c | 3810 | |
449092f6 | 3811 | int |
917317f4 | 3812 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3813 | { |
917317f4 | 3814 | unsigned char *buf; |
917317f4 JM |
3815 | unsigned char *p; |
3816 | unsigned char *plen; | |
c2d11a7d | 3817 | long sizeof_buf; |
917317f4 JM |
3818 | int plenlen; |
3819 | int todo; | |
3820 | int nr_bytes; | |
a257b5bb AC |
3821 | int payload_size; |
3822 | unsigned char *payload_start; | |
c906108c | 3823 | |
a257b5bb | 3824 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3825 | check_binary_download (memaddr); |
3826 | ||
a257b5bb AC |
3827 | /* Compute the size, and then allocate space for the largest |
3828 | possible packet. Include space for an extra trailing NUL. */ | |
3829 | sizeof_buf = get_memory_write_packet_size () + 1; | |
c2d11a7d | 3830 | buf = alloca (sizeof_buf); |
c906108c | 3831 | |
a257b5bb AC |
3832 | /* Compute the size of the actual payload by subtracting out the |
3833 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ | |
3834 | payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN") | |
3835 | + hexnumlen (memaddr) | |
3836 | + hexnumlen (len))); | |
c906108c | 3837 | |
a257b5bb | 3838 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3839 | |
a257b5bb | 3840 | /* Append "[XM]". Compute a best guess of the number of bytes |
917317f4 | 3841 | actually transfered. */ |
a257b5bb | 3842 | p = buf; |
917317f4 | 3843 | switch (remote_protocol_binary_download.support) |
c906108c | 3844 | { |
917317f4 JM |
3845 | case PACKET_ENABLE: |
3846 | *p++ = 'X'; | |
3847 | /* Best guess at number of bytes that will fit. */ | |
a257b5bb | 3848 | todo = min (len, payload_size); |
917317f4 JM |
3849 | break; |
3850 | case PACKET_DISABLE: | |
3851 | *p++ = 'M'; | |
3852 | /* num bytes that will fit */ | |
a257b5bb | 3853 | todo = min (len, payload_size / 2); |
917317f4 JM |
3854 | break; |
3855 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3856 | internal_error (__FILE__, __LINE__, |
3857 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3858 | default: |
8e65ff28 | 3859 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 JM |
3860 | } |
3861 | ||
a257b5bb | 3862 | /* Append "<memaddr>". */ |
917317f4 JM |
3863 | memaddr = remote_address_masked (memaddr); |
3864 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3865 | |
3866 | /* Append ",". */ | |
917317f4 JM |
3867 | *p++ = ','; |
3868 | ||
a257b5bb AC |
3869 | /* Append <len>. Retain the location/size of <len>. It may need to |
3870 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3871 | plen = p; |
3872 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3873 | p += plenlen; | |
a257b5bb AC |
3874 | |
3875 | /* Append ":". */ | |
917317f4 JM |
3876 | *p++ = ':'; |
3877 | *p = '\0'; | |
3878 | ||
a257b5bb AC |
3879 | /* Append the packet body. */ |
3880 | payload_start = p; | |
917317f4 JM |
3881 | switch (remote_protocol_binary_download.support) |
3882 | { | |
3883 | case PACKET_ENABLE: | |
3884 | /* Binary mode. Send target system values byte by byte, in | |
3885 | increasing byte addresses. Only escape certain critical | |
3886 | characters. */ | |
3887 | for (nr_bytes = 0; | |
a257b5bb | 3888 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3889 | nr_bytes++) |
c906108c | 3890 | { |
917317f4 JM |
3891 | switch (myaddr[nr_bytes] & 0xff) |
3892 | { | |
3893 | case '$': | |
3894 | case '#': | |
3895 | case 0x7d: | |
3896 | /* These must be escaped */ | |
3897 | *p++ = 0x7d; | |
3898 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3899 | break; | |
3900 | default: | |
3901 | *p++ = myaddr[nr_bytes] & 0xff; | |
3902 | break; | |
3903 | } | |
c906108c | 3904 | } |
917317f4 | 3905 | if (nr_bytes < todo) |
c906108c | 3906 | { |
917317f4 JM |
3907 | /* Escape chars have filled up the buffer prematurely, |
3908 | and we have actually sent fewer bytes than planned. | |
3909 | Fix-up the length field of the packet. Use the same | |
3910 | number of characters as before. */ | |
917317f4 JM |
3911 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3912 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3913 | } |
917317f4 JM |
3914 | break; |
3915 | case PACKET_DISABLE: | |
3916 | /* Normal mode: Send target system values byte by byte, in | |
3917 | increasing byte addresses. Each byte is encoded as a two hex | |
3918 | value. */ | |
2644f393 | 3919 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3920 | p += 2 * nr_bytes; |
917317f4 JM |
3921 | break; |
3922 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3923 | internal_error (__FILE__, __LINE__, |
3924 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3925 | default: |
8e65ff28 | 3926 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3927 | } |
917317f4 JM |
3928 | |
3929 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3930 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3931 | |
3932 | if (buf[0] == 'E') | |
3933 | { | |
3934 | /* There is no correspondance between what the remote protocol | |
3935 | uses for errors and errno codes. We would like a cleaner way | |
3936 | of representing errors (big enough to include errno codes, | |
3937 | bfd_error codes, and others). But for now just return EIO. */ | |
3938 | errno = EIO; | |
3939 | return 0; | |
3940 | } | |
3941 | ||
3942 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3943 | bytes than we'd planned. */ | |
3944 | return nr_bytes; | |
c906108c SS |
3945 | } |
3946 | ||
3947 | /* Read memory data directly from the remote machine. | |
3948 | This does not use the data cache; the data cache uses this. | |
3949 | MEMADDR is the address in the remote memory space. | |
3950 | MYADDR is the address of the buffer in our space. | |
3951 | LEN is the number of bytes. | |
3952 | ||
3953 | Returns number of bytes transferred, or 0 for error. */ | |
3954 | ||
917317f4 JM |
3955 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3956 | remote targets) shouldn't attempt to read the entire buffer. | |
3957 | Instead it should read a single packet worth of data and then | |
3958 | return the byte size of that packet to the caller. The caller (its | |
3959 | caller and its callers caller ;-) already contains code for | |
3960 | handling partial reads. */ | |
3961 | ||
449092f6 | 3962 | int |
fba45db2 | 3963 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3964 | { |
11cf8741 | 3965 | char *buf; |
c906108c | 3966 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3967 | long sizeof_buf; |
c906108c SS |
3968 | int origlen; |
3969 | ||
11cf8741 JM |
3970 | /* Create a buffer big enough for this packet. */ |
3971 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3972 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3973 | buf = alloca (sizeof_buf); | |
c906108c SS |
3974 | |
3975 | origlen = len; | |
3976 | while (len > 0) | |
3977 | { | |
c906108c SS |
3978 | char *p; |
3979 | int todo; | |
3980 | int i; | |
3981 | ||
c5aa993b | 3982 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3983 | |
3984 | /* construct "m"<memaddr>","<len>" */ | |
3985 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3986 | memaddr = remote_address_masked (memaddr); | |
3987 | p = buf; | |
3988 | *p++ = 'm'; | |
3989 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3990 | *p++ = ','; | |
3991 | p += hexnumstr (p, (ULONGEST) todo); | |
3992 | *p = '\0'; | |
3993 | ||
3994 | putpkt (buf); | |
c2d11a7d | 3995 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3996 | |
66504d44 MS |
3997 | if (buf[0] == 'E' |
3998 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3999 | && buf[3] == '\0') | |
c906108c SS |
4000 | { |
4001 | /* There is no correspondance between what the remote protocol uses | |
4002 | for errors and errno codes. We would like a cleaner way of | |
4003 | representing errors (big enough to include errno codes, bfd_error | |
4004 | codes, and others). But for now just return EIO. */ | |
4005 | errno = EIO; | |
4006 | return 0; | |
4007 | } | |
4008 | ||
c5aa993b JM |
4009 | /* Reply describes memory byte by byte, |
4010 | each byte encoded as two hex characters. */ | |
c906108c SS |
4011 | |
4012 | p = buf; | |
30559e10 | 4013 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4014 | { |
30559e10 MS |
4015 | /* Reply is short. This means that we were able to read |
4016 | only part of what we wanted to. */ | |
4017 | return i + (origlen - len); | |
c906108c SS |
4018 | } |
4019 | myaddr += todo; | |
4020 | memaddr += todo; | |
4021 | len -= todo; | |
4022 | } | |
4023 | return origlen; | |
4024 | } | |
4025 | \f | |
4026 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
4027 | transferring to or from debugger address BUFFER. Write to inferior if |
4028 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 4029 | for error. TARGET is unused. */ |
392a587b | 4030 | |
c906108c | 4031 | static int |
c338868a | 4032 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 4033 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4034 | struct target_ops *target) |
c906108c | 4035 | { |
392a587b JM |
4036 | CORE_ADDR targ_addr; |
4037 | int targ_len; | |
4930751a C |
4038 | int res; |
4039 | ||
f6684c31 AC |
4040 | /* Should this be the selected frame? */ |
4041 | gdbarch_remote_translate_xfer_address (current_gdbarch, current_regcache, | |
4042 | mem_addr, mem_len, | |
4043 | &targ_addr, &targ_len); | |
392a587b | 4044 | if (targ_len <= 0) |
c906108c | 4045 | return 0; |
c906108c | 4046 | |
4930751a C |
4047 | if (should_write) |
4048 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
4049 | else | |
4050 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
4051 | ||
4052 | return res; | |
c906108c SS |
4053 | } |
4054 | ||
c906108c | 4055 | static void |
fba45db2 | 4056 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4057 | { |
4058 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4059 | } | |
4060 | \f | |
4061 | /* Stuff for dealing with the packets which are part of this protocol. | |
4062 | See comment at top of file for details. */ | |
4063 | ||
4064 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
4065 | ||
4066 | static int | |
fba45db2 | 4067 | readchar (int timeout) |
c906108c SS |
4068 | { |
4069 | int ch; | |
4070 | ||
2cd58942 | 4071 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4072 | |
2acceee2 JM |
4073 | if (ch >= 0) |
4074 | return (ch & 0x7f); | |
4075 | ||
4076 | switch ((enum serial_rc) ch) | |
c906108c SS |
4077 | { |
4078 | case SERIAL_EOF: | |
2acceee2 | 4079 | target_mourn_inferior (); |
c906108c | 4080 | error ("Remote connection closed"); |
2acceee2 | 4081 | /* no return */ |
c906108c SS |
4082 | case SERIAL_ERROR: |
4083 | perror_with_name ("Remote communication error"); | |
2acceee2 | 4084 | /* no return */ |
c906108c | 4085 | case SERIAL_TIMEOUT: |
2acceee2 | 4086 | break; |
c906108c | 4087 | } |
2acceee2 | 4088 | return ch; |
c906108c SS |
4089 | } |
4090 | ||
4091 | /* Send the command in BUF to the remote machine, and read the reply | |
4092 | into BUF. Report an error if we get an error reply. */ | |
4093 | ||
4094 | static void | |
c2d11a7d JM |
4095 | remote_send (char *buf, |
4096 | long sizeof_buf) | |
c906108c SS |
4097 | { |
4098 | putpkt (buf); | |
c2d11a7d | 4099 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
4100 | |
4101 | if (buf[0] == 'E') | |
4102 | error ("Remote failure reply: %s", buf); | |
4103 | } | |
4104 | ||
4105 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4106 | string notation. */ | |
4107 | ||
4108 | static void | |
fba45db2 | 4109 | print_packet (char *buf) |
c906108c SS |
4110 | { |
4111 | puts_filtered ("\""); | |
43e526b9 | 4112 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4113 | puts_filtered ("\""); |
4114 | } | |
4115 | ||
4116 | int | |
fba45db2 | 4117 | putpkt (char *buf) |
c906108c SS |
4118 | { |
4119 | return putpkt_binary (buf, strlen (buf)); | |
4120 | } | |
4121 | ||
4122 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 4123 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
4124 | to account for the $, # and checksum, and for a possible /0 if we are |
4125 | debugging (remote_debug) and want to print the sent packet as a string */ | |
4126 | ||
4127 | static int | |
fba45db2 | 4128 | putpkt_binary (char *buf, int cnt) |
c906108c | 4129 | { |
d01949b6 | 4130 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4131 | int i; |
4132 | unsigned char csum = 0; | |
11cf8741 | 4133 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 4134 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 4135 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 4136 | |
c906108c SS |
4137 | int ch; |
4138 | int tcount = 0; | |
4139 | char *p; | |
4140 | ||
4141 | /* Copy the packet into buffer BUF2, encapsulating it | |
4142 | and giving it a checksum. */ | |
4143 | ||
c906108c SS |
4144 | p = buf2; |
4145 | *p++ = '$'; | |
4146 | ||
4147 | for (i = 0; i < cnt; i++) | |
4148 | { | |
4149 | csum += buf[i]; | |
4150 | *p++ = buf[i]; | |
4151 | } | |
4152 | *p++ = '#'; | |
4153 | *p++ = tohex ((csum >> 4) & 0xf); | |
4154 | *p++ = tohex (csum & 0xf); | |
4155 | ||
4156 | /* Send it over and over until we get a positive ack. */ | |
4157 | ||
4158 | while (1) | |
4159 | { | |
4160 | int started_error_output = 0; | |
4161 | ||
4162 | if (remote_debug) | |
4163 | { | |
4164 | *p = '\0'; | |
43e526b9 JM |
4165 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4166 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4167 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4168 | gdb_flush (gdb_stdlog); |
c906108c | 4169 | } |
2cd58942 | 4170 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
4171 | perror_with_name ("putpkt: write failed"); |
4172 | ||
4173 | /* read until either a timeout occurs (-2) or '+' is read */ | |
4174 | while (1) | |
4175 | { | |
4176 | ch = readchar (remote_timeout); | |
4177 | ||
c5aa993b | 4178 | if (remote_debug) |
c906108c SS |
4179 | { |
4180 | switch (ch) | |
4181 | { | |
4182 | case '+': | |
1216fa2c | 4183 | case '-': |
c906108c SS |
4184 | case SERIAL_TIMEOUT: |
4185 | case '$': | |
4186 | if (started_error_output) | |
4187 | { | |
4188 | putchar_unfiltered ('\n'); | |
4189 | started_error_output = 0; | |
4190 | } | |
4191 | } | |
4192 | } | |
4193 | ||
4194 | switch (ch) | |
4195 | { | |
4196 | case '+': | |
4197 | if (remote_debug) | |
0f71a2f6 | 4198 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4199 | return 1; |
1216fa2c AC |
4200 | case '-': |
4201 | if (remote_debug) | |
4202 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4203 | case SERIAL_TIMEOUT: |
c5aa993b | 4204 | tcount++; |
c906108c SS |
4205 | if (tcount > 3) |
4206 | return 0; | |
4207 | break; /* Retransmit buffer */ | |
4208 | case '$': | |
4209 | { | |
40e3f985 FN |
4210 | if (remote_debug) |
4211 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
4212 | /* It's probably an old response, and we're out of sync. |
4213 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 4214 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 4215 | continue; /* Now, go look for + */ |
c906108c SS |
4216 | } |
4217 | default: | |
4218 | if (remote_debug) | |
4219 | { | |
4220 | if (!started_error_output) | |
4221 | { | |
4222 | started_error_output = 1; | |
0f71a2f6 | 4223 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4224 | } |
0f71a2f6 | 4225 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4226 | } |
4227 | continue; | |
4228 | } | |
4229 | break; /* Here to retransmit */ | |
4230 | } | |
4231 | ||
4232 | #if 0 | |
4233 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4234 | able to get out next time we call QUIT, without anything as |
4235 | violent as interrupt_query. If we want to provide a way out of | |
4236 | here without getting to the next QUIT, it should be based on | |
4237 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4238 | if (quit_flag) |
4239 | { | |
4240 | quit_flag = 0; | |
4241 | interrupt_query (); | |
4242 | } | |
4243 | #endif | |
4244 | } | |
4245 | } | |
4246 | ||
0f71a2f6 JM |
4247 | static int remote_cisco_mode; |
4248 | ||
c906108c SS |
4249 | /* Come here after finding the start of the frame. Collect the rest |
4250 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4251 | compression. No more than sizeof_buf-1 characters are read so that |
4252 | the buffer can be NUL terminated. | |
c906108c | 4253 | |
c2d11a7d JM |
4254 | Returns -1 on error, number of characters in buffer (ignoring the |
4255 | trailing NULL) on success. (could be extended to return one of the | |
4256 | SERIAL status indications). */ | |
4257 | ||
4258 | static long | |
4259 | read_frame (char *buf, | |
4260 | long sizeof_buf) | |
c906108c SS |
4261 | { |
4262 | unsigned char csum; | |
c2d11a7d | 4263 | long bc; |
c906108c SS |
4264 | int c; |
4265 | ||
4266 | csum = 0; | |
c2d11a7d | 4267 | bc = 0; |
c906108c SS |
4268 | |
4269 | while (1) | |
4270 | { | |
c2d11a7d | 4271 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4272 | c = readchar (remote_timeout); |
c906108c SS |
4273 | switch (c) |
4274 | { | |
4275 | case SERIAL_TIMEOUT: | |
4276 | if (remote_debug) | |
0f71a2f6 | 4277 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4278 | return -1; |
c906108c SS |
4279 | case '$': |
4280 | if (remote_debug) | |
0f71a2f6 JM |
4281 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4282 | gdb_stdlog); | |
c2d11a7d | 4283 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4284 | case '#': |
4285 | { | |
4286 | unsigned char pktcsum; | |
e1b09194 AC |
4287 | int check_0 = 0; |
4288 | int check_1 = 0; | |
c906108c | 4289 | |
c2d11a7d | 4290 | buf[bc] = '\0'; |
c906108c | 4291 | |
e1b09194 AC |
4292 | check_0 = readchar (remote_timeout); |
4293 | if (check_0 >= 0) | |
4294 | check_1 = readchar (remote_timeout); | |
4295 | ||
4296 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
4297 | { | |
4298 | if (remote_debug) | |
4299 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4300 | return -1; | |
4301 | } | |
4302 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4303 | { |
4304 | if (remote_debug) | |
4305 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4306 | return -1; | |
4307 | } | |
c906108c | 4308 | |
e1b09194 | 4309 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4310 | if (csum == pktcsum) |
c2d11a7d | 4311 | return bc; |
c906108c | 4312 | |
c5aa993b | 4313 | if (remote_debug) |
c906108c | 4314 | { |
0f71a2f6 | 4315 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4316 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4317 | pktcsum, csum); |
4318 | fputs_filtered (buf, gdb_stdlog); | |
4319 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4320 | } |
c2d11a7d JM |
4321 | /* Number of characters in buffer ignoring trailing |
4322 | NUL. */ | |
4323 | return -1; | |
c906108c SS |
4324 | } |
4325 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4326 | { |
4327 | int repeat; | |
4328 | csum += c; | |
c906108c | 4329 | |
c2c6d25f JM |
4330 | if (remote_cisco_mode == 0) |
4331 | { | |
4332 | c = readchar (remote_timeout); | |
4333 | csum += c; | |
4334 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
4335 | } | |
4336 | else | |
4337 | { | |
4338 | /* Cisco's run-length encoding variant uses two | |
4339 | hex chars to represent the repeat count. */ | |
4340 | ||
4341 | c = readchar (remote_timeout); | |
4342 | csum += c; | |
4343 | repeat = fromhex (c) << 4; | |
4344 | c = readchar (remote_timeout); | |
4345 | csum += c; | |
4346 | repeat += fromhex (c); | |
4347 | } | |
c906108c | 4348 | |
c2d11a7d JM |
4349 | /* The character before ``*'' is repeated. */ |
4350 | ||
c2c6d25f | 4351 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4352 | && bc > 0 |
fb6e5c55 | 4353 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4354 | { |
c2d11a7d JM |
4355 | memset (&buf[bc], buf[bc - 1], repeat); |
4356 | bc += repeat; | |
c2c6d25f JM |
4357 | continue; |
4358 | } | |
4359 | ||
c2d11a7d | 4360 | buf[bc] = '\0'; |
c2c6d25f JM |
4361 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4362 | puts_filtered (buf); | |
4363 | puts_filtered ("\n"); | |
c2d11a7d | 4364 | return -1; |
c2c6d25f | 4365 | } |
c906108c | 4366 | default: |
c2d11a7d | 4367 | if (bc < sizeof_buf - 1) |
c906108c | 4368 | { |
c2d11a7d | 4369 | buf[bc++] = c; |
c906108c SS |
4370 | csum += c; |
4371 | continue; | |
4372 | } | |
4373 | ||
c2d11a7d | 4374 | buf[bc] = '\0'; |
c906108c SS |
4375 | puts_filtered ("Remote packet too long: "); |
4376 | puts_filtered (buf); | |
4377 | puts_filtered ("\n"); | |
4378 | ||
c2d11a7d | 4379 | return -1; |
c906108c SS |
4380 | } |
4381 | } | |
4382 | } | |
4383 | ||
4384 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4385 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4386 | this is used (in synchronous mode) to wait for a target that is is | |
4387 | executing user code to stop. */ | |
d9fcf2fb JM |
4388 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4389 | don't have to change all the calls to getpkt to deal with the | |
4390 | return value, because at the moment I don't know what the right | |
4391 | thing to do it for those. */ | |
c906108c | 4392 | void |
c2d11a7d JM |
4393 | getpkt (char *buf, |
4394 | long sizeof_buf, | |
4395 | int forever) | |
d9fcf2fb JM |
4396 | { |
4397 | int timed_out; | |
4398 | ||
4399 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4400 | } | |
4401 | ||
4402 | ||
4403 | /* Read a packet from the remote machine, with error checking, and | |
4404 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4405 | this is used (in synchronous mode) to wait for a target that is is | |
4406 | executing user code to stop. If FOREVER == 0, this function is | |
4407 | allowed to time out gracefully and return an indication of this to | |
4408 | the caller. */ | |
3172dc30 | 4409 | static int |
d9fcf2fb JM |
4410 | getpkt_sane (char *buf, |
4411 | long sizeof_buf, | |
4412 | int forever) | |
c906108c SS |
4413 | { |
4414 | int c; | |
4415 | int tries; | |
4416 | int timeout; | |
4417 | int val; | |
4418 | ||
c5aa993b | 4419 | strcpy (buf, "timeout"); |
c906108c SS |
4420 | |
4421 | if (forever) | |
4422 | { | |
c906108c | 4423 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4424 | } |
4425 | ||
4426 | else | |
4427 | timeout = remote_timeout; | |
4428 | ||
4429 | #define MAX_TRIES 3 | |
4430 | ||
4431 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4432 | { | |
4433 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4434 | continuously, but if it pauses, we'll get a zero from readchar |
4435 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4436 | |
4437 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4438 | After that, we expect characters to arrive at a brisk pace. They |
4439 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4440 | |
4441 | do | |
4442 | { | |
4443 | c = readchar (timeout); | |
4444 | ||
4445 | if (c == SERIAL_TIMEOUT) | |
4446 | { | |
2acceee2 | 4447 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4448 | { |
2acceee2 | 4449 | QUIT; |
c906108c SS |
4450 | target_mourn_inferior (); |
4451 | error ("Watchdog has expired. Target detached.\n"); | |
4452 | } | |
c906108c | 4453 | if (remote_debug) |
0f71a2f6 | 4454 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4455 | goto retry; |
4456 | } | |
4457 | } | |
4458 | while (c != '$'); | |
4459 | ||
4460 | /* We've found the start of a packet, now collect the data. */ | |
4461 | ||
c2d11a7d | 4462 | val = read_frame (buf, sizeof_buf); |
c906108c | 4463 | |
c2d11a7d | 4464 | if (val >= 0) |
c906108c SS |
4465 | { |
4466 | if (remote_debug) | |
43e526b9 JM |
4467 | { |
4468 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4469 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4470 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4471 | } | |
2cd58942 | 4472 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4473 | return 0; |
c906108c SS |
4474 | } |
4475 | ||
4476 | /* Try the whole thing again. */ | |
4477 | retry: | |
2cd58942 | 4478 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4479 | } |
4480 | ||
4481 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4482 | ||
4483 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4484 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4485 | return 1; |
c906108c SS |
4486 | } |
4487 | \f | |
4488 | static void | |
fba45db2 | 4489 | remote_kill (void) |
c906108c SS |
4490 | { |
4491 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4492 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4493 | if (kill_kludge) | |
4494 | { | |
4495 | kill_kludge = 0; | |
4496 | target_mourn_inferior (); | |
4497 | return; | |
4498 | } | |
4499 | ||
4500 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4501 | speaking terms with the remote system. */ | |
c5aa993b | 4502 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4503 | |
4504 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4505 | we do or not. For the existing stubs, kill is a noop. */ | |
4506 | target_mourn_inferior (); | |
4507 | } | |
4508 | ||
43ff13b4 JM |
4509 | /* Async version of remote_kill. */ |
4510 | static void | |
fba45db2 | 4511 | remote_async_kill (void) |
43ff13b4 JM |
4512 | { |
4513 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4514 | if (target_is_async_p ()) |
2cd58942 | 4515 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4516 | |
4517 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4518 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4519 | if (kill_kludge) | |
4520 | { | |
4521 | kill_kludge = 0; | |
4522 | target_mourn_inferior (); | |
4523 | return; | |
4524 | } | |
4525 | ||
4526 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4527 | speaking terms with the remote system. */ | |
c5aa993b | 4528 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4529 | |
4530 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4531 | we do or not. For the existing stubs, kill is a noop. */ | |
4532 | target_mourn_inferior (); | |
4533 | } | |
4534 | ||
c906108c | 4535 | static void |
fba45db2 | 4536 | remote_mourn (void) |
c906108c SS |
4537 | { |
4538 | remote_mourn_1 (&remote_ops); | |
4539 | } | |
4540 | ||
53a5351d | 4541 | static void |
fba45db2 | 4542 | remote_async_mourn (void) |
53a5351d JM |
4543 | { |
4544 | remote_mourn_1 (&remote_async_ops); | |
4545 | } | |
4546 | ||
c906108c | 4547 | static void |
fba45db2 | 4548 | extended_remote_mourn (void) |
c906108c SS |
4549 | { |
4550 | /* We do _not_ want to mourn the target like this; this will | |
4551 | remove the extended remote target from the target stack, | |
4552 | and the next time the user says "run" it'll fail. | |
4553 | ||
4554 | FIXME: What is the right thing to do here? */ | |
4555 | #if 0 | |
4556 | remote_mourn_1 (&extended_remote_ops); | |
4557 | #endif | |
4558 | } | |
4559 | ||
4560 | /* Worker function for remote_mourn. */ | |
4561 | static void | |
fba45db2 | 4562 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4563 | { |
4564 | unpush_target (target); | |
4565 | generic_mourn_inferior (); | |
4566 | } | |
4567 | ||
4568 | /* In the extended protocol we want to be able to do things like | |
4569 | "run" and have them basically work as expected. So we need | |
4570 | a special create_inferior function. | |
4571 | ||
4572 | FIXME: One day add support for changing the exec file | |
4573 | we're debugging, arguments and an environment. */ | |
4574 | ||
4575 | static void | |
fba45db2 | 4576 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4577 | { |
4578 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4579 | the remote server. */ | |
4580 | remove_breakpoints (); | |
4581 | ||
4582 | /* Now restart the remote server. */ | |
4583 | extended_remote_restart (); | |
4584 | ||
4585 | /* Now put the breakpoints back in. This way we're safe if the | |
4586 | restart function works via a unix fork on the remote side. */ | |
4587 | insert_breakpoints (); | |
4588 | ||
4589 | /* Clean up from the last time we were running. */ | |
4590 | clear_proceed_status (); | |
4591 | ||
4592 | /* Let the remote process run. */ | |
4593 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4594 | } | |
4595 | ||
43ff13b4 JM |
4596 | /* Async version of extended_remote_create_inferior. */ |
4597 | static void | |
fba45db2 | 4598 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4599 | { |
4600 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4601 | the remote server. */ | |
4602 | remove_breakpoints (); | |
4603 | ||
4604 | /* If running asynchronously, register the target file descriptor | |
4605 | with the event loop. */ | |
2acceee2 JM |
4606 | if (event_loop_p && target_can_async_p ()) |
4607 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4608 | |
4609 | /* Now restart the remote server. */ | |
4610 | extended_remote_restart (); | |
4611 | ||
4612 | /* Now put the breakpoints back in. This way we're safe if the | |
4613 | restart function works via a unix fork on the remote side. */ | |
4614 | insert_breakpoints (); | |
4615 | ||
4616 | /* Clean up from the last time we were running. */ | |
4617 | clear_proceed_status (); | |
4618 | ||
4619 | /* Let the remote process run. */ | |
4620 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4621 | } | |
c906108c | 4622 | \f |
c5aa993b | 4623 | |
aaab4dba | 4624 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4625 | instruction than other targets; in those use |
4626 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4627 | Also, bi-endian targets may define | |
4628 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4629 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4630 | just call the standard routines that are in mem-break.c. */ | |
4631 | ||
4632 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4633 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4634 | the ARCH-OS-tdep.c code can override the default. */ | |
4635 | ||
4636 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4637 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4638 | #endif |
4639 | ||
7fec2c59 | 4640 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4641 | |
4642 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4643 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4644 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4645 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4646 | #endif |
4647 | ||
7fec2c59 AC |
4648 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4649 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4650 | |
7fec2c59 | 4651 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4652 | |
aaab4dba AC |
4653 | /* Insert a breakpoint on targets that don't have any better |
4654 | breakpoint support. We read the contents of the target location | |
4655 | and stash it, then overwrite it with a breakpoint instruction. | |
4656 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4657 | is a pointer to memory allocated for saving the target contents. | |
4658 | It is guaranteed by the caller to be long enough to save the number | |
4659 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4660 | |
4661 | static int | |
fba45db2 | 4662 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4663 | { |
d01949b6 | 4664 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4665 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4666 | int val; |
96baa820 JM |
4667 | #endif |
4668 | int bp_size; | |
4669 | ||
d471ea57 AC |
4670 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4671 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4672 | fails, and the user has explicitly requested the Z support then | |
4673 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4674 | |
d471ea57 | 4675 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4676 | { |
d01949b6 | 4677 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4678 | char *p = buf; |
96baa820 | 4679 | |
0caabb7e | 4680 | addr = remote_address_masked (addr); |
96baa820 JM |
4681 | *(p++) = 'Z'; |
4682 | *(p++) = '0'; | |
4683 | *(p++) = ','; | |
0caabb7e AC |
4684 | p += hexnumstr (p, (ULONGEST) addr); |
4685 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4686 | sprintf (p, ",%d", bp_size); |
4687 | ||
4688 | putpkt (buf); | |
d01949b6 | 4689 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4690 | |
d471ea57 | 4691 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4692 | { |
d471ea57 AC |
4693 | case PACKET_ERROR: |
4694 | return -1; | |
4695 | case PACKET_OK: | |
4696 | return 0; | |
4697 | case PACKET_UNKNOWN: | |
4698 | break; | |
96baa820 JM |
4699 | } |
4700 | } | |
c906108c | 4701 | |
7fec2c59 | 4702 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4703 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4704 | ||
4705 | if (val == 0) | |
4706 | { | |
d7449b42 | 4707 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4708 | val = target_write_memory (addr, (char *) big_break_insn, |
4709 | sizeof big_break_insn); | |
4710 | else | |
4711 | val = target_write_memory (addr, (char *) little_break_insn, | |
4712 | sizeof little_break_insn); | |
4713 | } | |
4714 | ||
4715 | return val; | |
4716 | #else | |
4717 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4718 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4719 | } |
4720 | ||
4721 | static int | |
fba45db2 | 4722 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4723 | { |
d01949b6 | 4724 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4725 | int bp_size; |
4726 | ||
d471ea57 | 4727 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4728 | { |
d01949b6 | 4729 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4730 | char *p = buf; |
96baa820 JM |
4731 | |
4732 | *(p++) = 'z'; | |
4733 | *(p++) = '0'; | |
4734 | *(p++) = ','; | |
4735 | ||
0caabb7e AC |
4736 | addr = remote_address_masked (addr); |
4737 | p += hexnumstr (p, (ULONGEST) addr); | |
4738 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4739 | sprintf (p, ",%d", bp_size); |
4740 | ||
4741 | putpkt (buf); | |
d01949b6 | 4742 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4743 | |
4744 | return (buf[0] == 'E'); | |
4745 | } | |
4746 | ||
7fec2c59 | 4747 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4748 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4749 | #else | |
4750 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4751 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4752 | } |
4753 | ||
d471ea57 AC |
4754 | static int |
4755 | watchpoint_to_Z_packet (int type) | |
4756 | { | |
4757 | switch (type) | |
4758 | { | |
4759 | case hw_write: | |
4760 | return 2; | |
4761 | break; | |
4762 | case hw_read: | |
4763 | return 3; | |
4764 | break; | |
4765 | case hw_access: | |
4766 | return 4; | |
4767 | break; | |
4768 | default: | |
8e65ff28 AC |
4769 | internal_error (__FILE__, __LINE__, |
4770 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4771 | } |
4772 | } | |
4773 | ||
3c3bea1c | 4774 | static int |
fba45db2 | 4775 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4776 | { |
d01949b6 AC |
4777 | struct remote_state *rs = get_remote_state (); |
4778 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4779 | char *p; |
d471ea57 | 4780 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4781 | |
d471ea57 AC |
4782 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4783 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4784 | remote_protocol_Z[packet].name, | |
4785 | remote_protocol_Z[packet].title); | |
96baa820 | 4786 | |
d471ea57 | 4787 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4788 | p = strchr (buf, '\0'); |
4789 | addr = remote_address_masked (addr); | |
4790 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4791 | sprintf (p, ",%x", len); |
96baa820 JM |
4792 | |
4793 | putpkt (buf); | |
d01949b6 | 4794 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4795 | |
d471ea57 AC |
4796 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4797 | { | |
4798 | case PACKET_ERROR: | |
4799 | case PACKET_UNKNOWN: | |
4800 | return -1; | |
4801 | case PACKET_OK: | |
4802 | return 0; | |
4803 | } | |
8e65ff28 AC |
4804 | internal_error (__FILE__, __LINE__, |
4805 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4806 | } |
4807 | ||
d471ea57 | 4808 | |
3c3bea1c | 4809 | static int |
fba45db2 | 4810 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4811 | { |
d01949b6 AC |
4812 | struct remote_state *rs = get_remote_state (); |
4813 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4814 | char *p; |
d471ea57 AC |
4815 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4816 | ||
4817 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4818 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4819 | remote_protocol_Z[packet].name, | |
4820 | remote_protocol_Z[packet].title); | |
96baa820 | 4821 | |
d471ea57 | 4822 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4823 | p = strchr (buf, '\0'); |
4824 | addr = remote_address_masked (addr); | |
4825 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4826 | sprintf (p, ",%x", len); |
96baa820 | 4827 | putpkt (buf); |
d01949b6 | 4828 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4829 | |
d471ea57 AC |
4830 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4831 | { | |
4832 | case PACKET_ERROR: | |
4833 | case PACKET_UNKNOWN: | |
4834 | return -1; | |
4835 | case PACKET_OK: | |
4836 | return 0; | |
4837 | } | |
8e65ff28 AC |
4838 | internal_error (__FILE__, __LINE__, |
4839 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4840 | } |
4841 | ||
3c3bea1c | 4842 | |
501eef12 AC |
4843 | int remote_hw_watchpoint_limit = -1; |
4844 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4845 | |
b9362cc7 | 4846 | static int |
3c3bea1c | 4847 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4848 | { |
3c3bea1c GS |
4849 | if (type == bp_hardware_breakpoint) |
4850 | { | |
4851 | if (remote_hw_breakpoint_limit == 0) | |
4852 | return 0; | |
501eef12 AC |
4853 | else if (remote_hw_breakpoint_limit < 0) |
4854 | return 1; | |
3c3bea1c GS |
4855 | else if (cnt <= remote_hw_breakpoint_limit) |
4856 | return 1; | |
4857 | } | |
4858 | else | |
4859 | { | |
4860 | if (remote_hw_watchpoint_limit == 0) | |
4861 | return 0; | |
501eef12 AC |
4862 | else if (remote_hw_watchpoint_limit < 0) |
4863 | return 1; | |
3c3bea1c GS |
4864 | else if (ot) |
4865 | return -1; | |
4866 | else if (cnt <= remote_hw_watchpoint_limit) | |
4867 | return 1; | |
4868 | } | |
4869 | return -1; | |
4870 | } | |
4871 | ||
b9362cc7 | 4872 | static int |
3c3bea1c GS |
4873 | remote_stopped_by_watchpoint (void) |
4874 | { | |
4875 | return remote_stopped_by_watchpoint_p; | |
4876 | } | |
4877 | ||
b9362cc7 | 4878 | static CORE_ADDR |
3c3bea1c GS |
4879 | remote_stopped_data_address (void) |
4880 | { | |
4881 | if (remote_stopped_by_watchpoint ()) | |
4882 | return remote_watch_data_address; | |
4883 | return (CORE_ADDR)0; | |
4884 | } | |
4885 | ||
4886 | ||
4887 | static int | |
4888 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4889 | { | |
4890 | int len = 0; | |
d01949b6 AC |
4891 | struct remote_state *rs = get_remote_state (); |
4892 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4893 | char *p = buf; |
96baa820 | 4894 | |
c8189ed1 GS |
4895 | /* The length field should be set to the size of a breakpoint |
4896 | instruction. */ | |
4897 | ||
4898 | BREAKPOINT_FROM_PC (&addr, &len); | |
3c3bea1c | 4899 | |
d471ea57 AC |
4900 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4901 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4902 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4903 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4904 | ||
96baa820 JM |
4905 | *(p++) = 'Z'; |
4906 | *(p++) = '1'; | |
4907 | *(p++) = ','; | |
4908 | ||
4909 | addr = remote_address_masked (addr); | |
4910 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4911 | sprintf (p, ",%x", len); |
96baa820 JM |
4912 | |
4913 | putpkt (buf); | |
d01949b6 | 4914 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4915 | |
d471ea57 AC |
4916 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4917 | { | |
4918 | case PACKET_ERROR: | |
4919 | case PACKET_UNKNOWN: | |
4920 | return -1; | |
4921 | case PACKET_OK: | |
4922 | return 0; | |
4923 | } | |
8e65ff28 | 4924 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4925 | "remote_insert_hw_breakpoint: reached end of function"); |
96baa820 JM |
4926 | } |
4927 | ||
d471ea57 | 4928 | |
3c3bea1c GS |
4929 | static int |
4930 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
96baa820 | 4931 | { |
3c3bea1c | 4932 | int len; |
d01949b6 AC |
4933 | struct remote_state *rs = get_remote_state (); |
4934 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4935 | char *p = buf; |
c8189ed1 GS |
4936 | |
4937 | /* The length field should be set to the size of a breakpoint | |
4938 | instruction. */ | |
4939 | ||
4940 | BREAKPOINT_FROM_PC (&addr, &len); | |
4941 | ||
d471ea57 AC |
4942 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4943 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4944 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4945 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4946 | ||
96baa820 JM |
4947 | *(p++) = 'z'; |
4948 | *(p++) = '1'; | |
4949 | *(p++) = ','; | |
4950 | ||
4951 | addr = remote_address_masked (addr); | |
4952 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4953 | sprintf (p, ",%x", len); |
96baa820 JM |
4954 | |
4955 | putpkt(buf); | |
d01949b6 | 4956 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4957 | |
d471ea57 AC |
4958 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4959 | { | |
4960 | case PACKET_ERROR: | |
4961 | case PACKET_UNKNOWN: | |
4962 | return -1; | |
4963 | case PACKET_OK: | |
4964 | return 0; | |
4965 | } | |
8e65ff28 | 4966 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4967 | "remote_remove_hw_breakpoint: reached end of function"); |
96baa820 | 4968 | } |
96baa820 | 4969 | |
c906108c SS |
4970 | /* Some targets are only capable of doing downloads, and afterwards |
4971 | they switch to the remote serial protocol. This function provides | |
4972 | a clean way to get from the download target to the remote target. | |
4973 | It's basically just a wrapper so that we don't have to expose any | |
4974 | of the internal workings of remote.c. | |
4975 | ||
4976 | Prior to calling this routine, you should shutdown the current | |
4977 | target code, else you will get the "A program is being debugged | |
4978 | already..." message. Usually a call to pop_target() suffices. */ | |
4979 | ||
4980 | void | |
fba45db2 | 4981 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4982 | { |
4983 | printf_filtered ("Switching to remote protocol\n"); | |
4984 | remote_open (name, from_tty); | |
4985 | } | |
4986 | ||
c906108c SS |
4987 | /* Table used by the crc32 function to calcuate the checksum. */ |
4988 | ||
c5aa993b JM |
4989 | static unsigned long crc32_table[256] = |
4990 | {0, 0}; | |
c906108c SS |
4991 | |
4992 | static unsigned long | |
fba45db2 | 4993 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4994 | { |
c5aa993b | 4995 | if (!crc32_table[1]) |
c906108c SS |
4996 | { |
4997 | /* Initialize the CRC table and the decoding table. */ | |
4998 | int i, j; | |
4999 | unsigned int c; | |
5000 | ||
5001 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5002 | { |
5003 | for (c = i << 24, j = 8; j > 0; --j) | |
5004 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5005 | crc32_table[i] = c; | |
5006 | } | |
c906108c SS |
5007 | } |
5008 | ||
5009 | while (len--) | |
5010 | { | |
5011 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5012 | buf++; | |
5013 | } | |
5014 | return crc; | |
5015 | } | |
5016 | ||
5017 | /* compare-sections command | |
5018 | ||
5019 | With no arguments, compares each loadable section in the exec bfd | |
5020 | with the same memory range on the target, and reports mismatches. | |
5021 | Useful for verifying the image on the target against the exec file. | |
5022 | Depends on the target understanding the new "qCRC:" request. */ | |
5023 | ||
e514a9d6 JM |
5024 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5025 | target method (target verify memory) and generic version of the | |
5026 | actual command. This will allow other high-level code (especially | |
5027 | generic_load()) to make use of this target functionality. */ | |
5028 | ||
c906108c | 5029 | static void |
fba45db2 | 5030 | compare_sections_command (char *args, int from_tty) |
c906108c | 5031 | { |
d01949b6 | 5032 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5033 | asection *s; |
5034 | unsigned long host_crc, target_crc; | |
5035 | extern bfd *exec_bfd; | |
5036 | struct cleanup *old_chain; | |
085dd6e6 JM |
5037 | char *tmp; |
5038 | char *sectdata; | |
ce359b09 | 5039 | const char *sectname; |
d01949b6 | 5040 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
5041 | bfd_size_type size; |
5042 | bfd_vma lma; | |
5043 | int matched = 0; | |
5044 | int mismatched = 0; | |
5045 | ||
5046 | if (!exec_bfd) | |
5047 | error ("command cannot be used without an exec file"); | |
5048 | if (!current_target.to_shortname || | |
5049 | strcmp (current_target.to_shortname, "remote") != 0) | |
5050 | error ("command can only be used with remote target"); | |
5051 | ||
c5aa993b | 5052 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5053 | { |
5054 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5055 | continue; /* skip non-loadable section */ |
c906108c SS |
5056 | |
5057 | size = bfd_get_section_size_before_reloc (s); | |
5058 | if (size == 0) | |
c5aa993b | 5059 | continue; /* skip zero-length section */ |
c906108c | 5060 | |
ce359b09 | 5061 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5062 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5063 | continue; /* not the section selected by user */ |
c906108c | 5064 | |
c5aa993b | 5065 | matched = 1; /* do this section */ |
c906108c SS |
5066 | lma = s->lma; |
5067 | /* FIXME: assumes lma can fit into long */ | |
5068 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
5069 | putpkt (buf); | |
5070 | ||
5071 | /* be clever; compute the host_crc before waiting for target reply */ | |
5072 | sectdata = xmalloc (size); | |
b8c9b27d | 5073 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5074 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5075 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5076 | ||
d01949b6 | 5077 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 5078 | if (buf[0] == 'E') |
823ca731 AC |
5079 | error ("target memory fault, section %s, range 0x%s -- 0x%s", |
5080 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5081 | if (buf[0] != 'C') |
5082 | error ("remote target does not support this operation"); | |
5083 | ||
5084 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
5085 | target_crc = target_crc * 16 + fromhex (*tmp); | |
5086 | ||
d4f3574e SS |
5087 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5088 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5089 | if (host_crc == target_crc) |
5090 | printf_filtered ("matched.\n"); | |
5091 | else | |
c5aa993b JM |
5092 | { |
5093 | printf_filtered ("MIS-MATCHED!\n"); | |
5094 | mismatched++; | |
5095 | } | |
c906108c SS |
5096 | |
5097 | do_cleanups (old_chain); | |
5098 | } | |
5099 | if (mismatched > 0) | |
5100 | warning ("One or more sections of the remote executable does not match\n\ | |
5101 | the loaded file\n"); | |
5102 | if (args && !matched) | |
5103 | printf_filtered ("No loaded section named '%s'.\n", args); | |
5104 | } | |
5105 | ||
5106 | static int | |
fba45db2 | 5107 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c | 5108 | { |
d01949b6 | 5109 | struct remote_state *rs = get_remote_state (); |
c906108c | 5110 | int i; |
d01949b6 | 5111 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 5112 | char *p2 = &buf2[0]; |
c906108c | 5113 | |
c5aa993b | 5114 | if (!bufsiz) |
c906108c SS |
5115 | error ("null pointer to remote bufer size specified"); |
5116 | ||
d01949b6 | 5117 | /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let |
c906108c SS |
5118 | the caller know and return what the minimum size is */ |
5119 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
d01949b6 | 5120 | if (*bufsiz < (rs->remote_packet_size)) |
c906108c | 5121 | { |
d01949b6 | 5122 | *bufsiz = (rs->remote_packet_size); |
c906108c SS |
5123 | return -1; |
5124 | } | |
5125 | ||
5126 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 5127 | if (!remote_desc) |
c906108c SS |
5128 | error ("remote query is only available after target open"); |
5129 | ||
5130 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 5131 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
5132 | error ("invalid remote query type"); |
5133 | ||
c5aa993b | 5134 | if (!buf) |
c906108c SS |
5135 | error ("null remote query specified"); |
5136 | ||
c5aa993b | 5137 | if (!outbuf) |
c906108c SS |
5138 | error ("remote query requires a buffer to receive data"); |
5139 | ||
5140 | outbuf[0] = '\0'; | |
5141 | ||
5142 | *p2++ = 'q'; | |
5143 | *p2++ = query_type; | |
5144 | ||
5145 | /* we used one buffer char for the remote protocol q command and another | |
5146 | for the query type. As the remote protocol encapsulation uses 4 chars | |
5147 | plus one extra in case we are debugging (remote_debug), | |
5148 | we have PBUFZIZ - 7 left to pack the query string */ | |
5149 | i = 0; | |
d01949b6 | 5150 | while (buf[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c SS |
5151 | { |
5152 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
5153 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
5154 | error ("illegal characters in query string"); | |
c906108c SS |
5155 | |
5156 | *p2++ = buf[i]; | |
5157 | i++; | |
5158 | } | |
5159 | *p2 = buf[i]; | |
5160 | ||
c5aa993b | 5161 | if (buf[i]) |
c906108c SS |
5162 | error ("query larger than available buffer"); |
5163 | ||
5164 | i = putpkt (buf2); | |
c5aa993b JM |
5165 | if (i < 0) |
5166 | return i; | |
c906108c | 5167 | |
c2d11a7d | 5168 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
5169 | |
5170 | return 0; | |
5171 | } | |
5172 | ||
96baa820 JM |
5173 | static void |
5174 | remote_rcmd (char *command, | |
d9fcf2fb | 5175 | struct ui_file *outbuf) |
96baa820 | 5176 | { |
d01949b6 | 5177 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5178 | int i; |
d01949b6 | 5179 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5180 | char *p = buf; |
5181 | ||
5182 | if (!remote_desc) | |
5183 | error ("remote rcmd is only available after target open"); | |
5184 | ||
7be570e7 JM |
5185 | /* Send a NULL command across as an empty command */ |
5186 | if (command == NULL) | |
5187 | command = ""; | |
5188 | ||
96baa820 JM |
5189 | /* The query prefix */ |
5190 | strcpy (buf, "qRcmd,"); | |
5191 | p = strchr (buf, '\0'); | |
5192 | ||
d01949b6 | 5193 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5194 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5195 | ||
5196 | /* Encode the actual command */ | |
30559e10 | 5197 | bin2hex (command, p, 0); |
96baa820 JM |
5198 | |
5199 | if (putpkt (buf) < 0) | |
5200 | error ("Communication problem with target\n"); | |
5201 | ||
5202 | /* get/display the response */ | |
5203 | while (1) | |
5204 | { | |
5205 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
5206 | buf[0] = '\0'; | |
d01949b6 | 5207 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5208 | if (buf[0] == '\0') |
5209 | error ("Target does not support this command\n"); | |
5210 | if (buf[0] == 'O' && buf[1] != 'K') | |
5211 | { | |
5212 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
5213 | continue; | |
5214 | } | |
5215 | if (strcmp (buf, "OK") == 0) | |
5216 | break; | |
7be570e7 JM |
5217 | if (strlen (buf) == 3 && buf[0] == 'E' |
5218 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5219 | { | |
5220 | error ("Protocol error with Rcmd"); | |
5221 | } | |
96baa820 JM |
5222 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5223 | { | |
5224 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5225 | fputc_unfiltered (c, outbuf); | |
5226 | } | |
5227 | break; | |
5228 | } | |
5229 | } | |
5230 | ||
c906108c | 5231 | static void |
fba45db2 | 5232 | packet_command (char *args, int from_tty) |
c906108c | 5233 | { |
d01949b6 AC |
5234 | struct remote_state *rs = get_remote_state (); |
5235 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5236 | |
c5aa993b | 5237 | if (!remote_desc) |
c906108c SS |
5238 | error ("command can only be used with remote target"); |
5239 | ||
c5aa993b | 5240 | if (!args) |
c906108c SS |
5241 | error ("remote-packet command requires packet text as argument"); |
5242 | ||
5243 | puts_filtered ("sending: "); | |
5244 | print_packet (args); | |
5245 | puts_filtered ("\n"); | |
5246 | putpkt (args); | |
5247 | ||
d01949b6 | 5248 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5249 | puts_filtered ("received: "); |
5250 | print_packet (buf); | |
5251 | puts_filtered ("\n"); | |
5252 | } | |
5253 | ||
5254 | #if 0 | |
5255 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
5256 | ||
a14ed312 | 5257 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5258 | |
a14ed312 | 5259 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5260 | |
a14ed312 | 5261 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5262 | |
a14ed312 | 5263 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5264 | |
a14ed312 | 5265 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 5266 | |
a14ed312 | 5267 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5268 | |
a14ed312 | 5269 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5270 | |
a14ed312 | 5271 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5272 | |
a14ed312 | 5273 | static void init_remote_threadtests (void); |
c906108c | 5274 | |
c5aa993b | 5275 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5276 | |
5277 | static void | |
fba45db2 | 5278 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5279 | { |
5280 | int sample_thread = SAMPLE_THREAD; | |
5281 | ||
5282 | printf_filtered ("Remote threadset test\n"); | |
5283 | set_thread (sample_thread, 1); | |
5284 | } | |
5285 | ||
5286 | ||
5287 | static void | |
fba45db2 | 5288 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5289 | { |
5290 | int sample_thread = SAMPLE_THREAD; | |
5291 | ||
39f77062 | 5292 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5293 | printf_filtered ("PASS: Thread alive test\n"); |
5294 | else | |
5295 | printf_filtered ("FAIL: Thread alive test\n"); | |
5296 | } | |
5297 | ||
a14ed312 | 5298 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5299 | |
5300 | void | |
fba45db2 | 5301 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5302 | { |
5303 | char hexid[20]; | |
5304 | ||
5305 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5306 | hexid[16] = 0; | |
5307 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5308 | } | |
5309 | ||
5310 | static void | |
fba45db2 | 5311 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5312 | { |
5313 | int startflag = 1; | |
5314 | threadref nextthread; | |
5315 | int done, result_count; | |
5316 | threadref threadlist[3]; | |
5317 | ||
5318 | printf_filtered ("Remote Threadlist test\n"); | |
5319 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5320 | &result_count, &threadlist[0])) | |
5321 | printf_filtered ("FAIL: threadlist test\n"); | |
5322 | else | |
5323 | { | |
5324 | threadref *scan = threadlist; | |
5325 | threadref *limit = scan + result_count; | |
5326 | ||
5327 | while (scan < limit) | |
5328 | output_threadid (" thread ", scan++); | |
5329 | } | |
5330 | } | |
5331 | ||
5332 | void | |
fba45db2 | 5333 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5334 | { |
5335 | output_threadid ("Threadid: ", &info->threadid); | |
5336 | printf_filtered ("Name: %s\n ", info->shortname); | |
5337 | printf_filtered ("State: %s\n", info->display); | |
5338 | printf_filtered ("other: %s\n\n", info->more_display); | |
5339 | } | |
5340 | ||
5341 | int | |
fba45db2 | 5342 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5343 | { |
5344 | int result; | |
5345 | int set; | |
5346 | struct gdb_ext_thread_info threadinfo; | |
5347 | ||
5348 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5349 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5350 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5351 | display_thread_info (&threadinfo); | |
5352 | return result; | |
5353 | } | |
5354 | ||
5355 | static void | |
fba45db2 | 5356 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5357 | { |
5358 | int athread = SAMPLE_THREAD; | |
5359 | threadref thread; | |
5360 | int set; | |
5361 | ||
5362 | int_to_threadref (&thread, athread); | |
5363 | printf_filtered ("Remote Threadinfo test\n"); | |
5364 | if (!get_and_display_threadinfo (&thread)) | |
5365 | printf_filtered ("FAIL cannot get thread info\n"); | |
5366 | } | |
5367 | ||
5368 | static int | |
fba45db2 | 5369 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5370 | { |
5371 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5372 | return get_and_display_threadinfo (ref); | |
5373 | } | |
5374 | ||
5375 | static void | |
fba45db2 | 5376 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5377 | { |
5378 | printf_filtered ("Remote Threadlist update test\n"); | |
5379 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5380 | } | |
5381 | ||
5382 | static void | |
5383 | init_remote_threadtests (void) | |
5384 | { | |
5385 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5386 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5387 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5388 | "Fetch and display info about one thread"); | |
5389 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5390 | "Test setting to a different thread"); | |
5391 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5392 | "Iterate through updating all remote thread info"); | |
5393 | add_com ("talive", class_obscure, threadalive_test, | |
5394 | " Remote thread alive test "); | |
5395 | } | |
5396 | ||
5397 | #endif /* 0 */ | |
5398 | ||
f3fb8c85 MS |
5399 | /* Convert a thread ID to a string. Returns the string in a static |
5400 | buffer. */ | |
5401 | ||
5402 | static char * | |
39f77062 | 5403 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5404 | { |
5405 | static char buf[30]; | |
5406 | ||
39f77062 | 5407 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5408 | return buf; |
5409 | } | |
5410 | ||
c906108c | 5411 | static void |
fba45db2 | 5412 | init_remote_ops (void) |
c906108c | 5413 | { |
c5aa993b | 5414 | remote_ops.to_shortname = "remote"; |
c906108c | 5415 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5416 | remote_ops.to_doc = |
c906108c | 5417 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5418 | Specify the serial device it is connected to\n\ |
5419 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5420 | remote_ops.to_open = remote_open; |
5421 | remote_ops.to_close = remote_close; | |
c906108c | 5422 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5423 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5424 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5425 | remote_ops.to_wait = remote_wait; |
5426 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5427 | remote_ops.to_store_registers = remote_store_registers; | |
5428 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5429 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5430 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5431 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5432 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5433 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5434 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5435 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5436 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5437 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5438 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5439 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5440 | remote_ops.to_kill = remote_kill; |
5441 | remote_ops.to_load = generic_load; | |
c906108c SS |
5442 | remote_ops.to_mourn_inferior = remote_mourn; |
5443 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5444 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5445 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5446 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c SS |
5447 | remote_ops.to_stop = remote_stop; |
5448 | remote_ops.to_query = remote_query; | |
96baa820 | 5449 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5450 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5451 | remote_ops.to_has_all_memory = 1; |
5452 | remote_ops.to_has_memory = 1; | |
5453 | remote_ops.to_has_stack = 1; | |
5454 | remote_ops.to_has_registers = 1; | |
5455 | remote_ops.to_has_execution = 1; | |
5456 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5457 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5458 | } |
5459 | ||
5460 | /* Set up the extended remote vector by making a copy of the standard | |
5461 | remote vector and adding to it. */ | |
5462 | ||
5463 | static void | |
fba45db2 | 5464 | init_extended_remote_ops (void) |
c906108c SS |
5465 | { |
5466 | extended_remote_ops = remote_ops; | |
5467 | ||
0f71a2f6 | 5468 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5469 | extended_remote_ops.to_longname = |
c906108c | 5470 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5471 | extended_remote_ops.to_doc = |
c906108c SS |
5472 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5473 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5474 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5475 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5476 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5477 | } |
5478 | ||
5479 | /* | |
5480 | * Command: info remote-process | |
5481 | * | |
5482 | * This implements Cisco's version of the "info proc" command. | |
5483 | * | |
5484 | * This query allows the target stub to return an arbitrary string | |
5485 | * (or strings) giving arbitrary information about the target process. | |
5486 | * This is optional; the target stub isn't required to implement it. | |
5487 | * | |
5488 | * Syntax: qfProcessInfo request first string | |
5489 | * qsProcessInfo request subsequent string | |
5490 | * reply: 'O'<hex-encoded-string> | |
5491 | * 'l' last reply (empty) | |
5492 | */ | |
5493 | ||
5494 | static void | |
c2d11a7d | 5495 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5496 | { |
d01949b6 AC |
5497 | struct remote_state *rs = get_remote_state (); |
5498 | char *buf = alloca (rs->remote_packet_size); | |
0f71a2f6 JM |
5499 | |
5500 | if (remote_desc == 0) | |
5501 | error ("Command can only be used when connected to the remote target."); | |
5502 | ||
5503 | putpkt ("qfProcessInfo"); | |
d01949b6 | 5504 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 | 5505 | if (buf[0] == 0) |
c5aa993b | 5506 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5507 | |
5508 | if (buf[0] == 'E') | |
5509 | error ("info proc: target error."); | |
5510 | ||
c5aa993b | 5511 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5512 | { |
5513 | remote_console_output (&buf[1]); | |
5514 | putpkt ("qsProcessInfo"); | |
d01949b6 | 5515 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 JM |
5516 | } |
5517 | } | |
5518 | ||
5519 | /* | |
5520 | * Target Cisco | |
5521 | */ | |
5522 | ||
5523 | static void | |
c2d11a7d | 5524 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 | 5525 | { |
36918e70 | 5526 | int ex; |
0f71a2f6 | 5527 | if (name == 0) |
22e04375 AC |
5528 | error ("To open a remote debug connection, you need to specify what \n" |
5529 | "device is attached to the remote system (e.g. host:port)."); | |
0f71a2f6 | 5530 | |
6426a772 JM |
5531 | /* See FIXME above */ |
5532 | wait_forever_enabled_p = 1; | |
5533 | ||
0f71a2f6 JM |
5534 | target_preopen (from_tty); |
5535 | ||
5536 | unpush_target (&remote_cisco_ops); | |
5537 | ||
9db8d71f | 5538 | remote_desc = remote_serial_open (name); |
0f71a2f6 JM |
5539 | if (!remote_desc) |
5540 | perror_with_name (name); | |
5541 | ||
5542 | /* | |
5543 | * If a baud rate was specified on the gdb command line it will | |
5544 | * be greater than the initial value of -1. If it is, use it otherwise | |
5545 | * default to 9600 | |
5546 | */ | |
5547 | ||
5548 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
2cd58942 | 5549 | if (serial_setbaudrate (remote_desc, baud_rate)) |
0f71a2f6 | 5550 | { |
2cd58942 | 5551 | serial_close (remote_desc); |
0f71a2f6 JM |
5552 | perror_with_name (name); |
5553 | } | |
5554 | ||
2cd58942 | 5555 | serial_raw (remote_desc); |
0f71a2f6 JM |
5556 | |
5557 | /* If there is something sitting in the buffer we might take it as a | |
5558 | response to a command, which would be bad. */ | |
2cd58942 | 5559 | serial_flush_input (remote_desc); |
0f71a2f6 JM |
5560 | |
5561 | if (from_tty) | |
5562 | { | |
5563 | puts_filtered ("Remote debugging using "); | |
5564 | puts_filtered (name); | |
5565 | puts_filtered ("\n"); | |
5566 | } | |
5567 | ||
5568 | remote_cisco_mode = 1; | |
5569 | ||
5570 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5571 | ||
d471ea57 | 5572 | init_all_packet_configs (); |
0f71a2f6 | 5573 | |
c5aa993b | 5574 | general_thread = -2; |
0f71a2f6 JM |
5575 | continue_thread = -2; |
5576 | ||
9d1f7ab2 MS |
5577 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5578 | use_threadinfo_query = 1; | |
5579 | use_threadextra_query = 1; | |
5580 | ||
0f71a2f6 JM |
5581 | /* Without this, some commands which require an active target (such |
5582 | as kill) won't work. This variable serves (at least) double duty | |
5583 | as both the pid of the target process (if it has such), and as a | |
5584 | flag indicating that a target is active. These functions should | |
5585 | be split out into seperate variables, especially since GDB will | |
5586 | someday have a notion of debugging several processes. */ | |
39f77062 | 5587 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
0f71a2f6 | 5588 | |
36918e70 | 5589 | /* Start the remote connection; if error, discard this target. See |
165b8e33 AC |
5590 | the comments in remote_open_1() for further details such as the |
5591 | need to re-throw the exception. */ | |
36918e70 AC |
5592 | ex = catch_exceptions (uiout, |
5593 | remote_start_remote_dummy, NULL, | |
5594 | "Couldn't establish connection to remote" | |
5595 | " target\n", | |
5596 | RETURN_MASK_ALL); | |
5597 | if (ex < 0) | |
0f71a2f6 JM |
5598 | { |
5599 | pop_target (); | |
165b8e33 | 5600 | throw_exception (ex); |
0f71a2f6 JM |
5601 | } |
5602 | } | |
5603 | ||
5604 | static void | |
c2d11a7d | 5605 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5606 | { |
5607 | remote_cisco_mode = 0; | |
5608 | remote_close (quitting); | |
5609 | } | |
5610 | ||
c5aa993b | 5611 | static void |
8ab86381 | 5612 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5613 | { |
5614 | remote_mourn_1 (&remote_cisco_ops); | |
5615 | } | |
5616 | ||
c5aa993b JM |
5617 | enum |
5618 | { | |
5619 | READ_MORE, | |
5620 | FATAL_ERROR, | |
5621 | ENTER_DEBUG, | |
0f71a2f6 | 5622 | DISCONNECT_TELNET |
c5aa993b JM |
5623 | } |
5624 | minitelnet_return; | |
0f71a2f6 | 5625 | |
1ff9c3d6 AC |
5626 | /* Shared between readsocket() and readtty(). The size is arbitrary, |
5627 | however all targets are known to support a 400 character packet. */ | |
5628 | static char tty_input[400]; | |
0f71a2f6 JM |
5629 | |
5630 | static int escape_count; | |
5631 | static int echo_check; | |
5632 | extern int quit_flag; | |
5633 | ||
5634 | static int | |
c2d11a7d | 5635 | readsocket (void) |
0f71a2f6 JM |
5636 | { |
5637 | int data; | |
5638 | ||
5639 | /* Loop until the socket doesn't have any more data */ | |
5640 | ||
c5aa993b | 5641 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5642 | { |
5643 | /* Check for the escape sequence */ | |
c5aa993b | 5644 | if (data == '|') |
0f71a2f6 JM |
5645 | { |
5646 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5647 | if (++escape_count == 4) |
0f71a2f6 JM |
5648 | { |
5649 | return ENTER_DEBUG; | |
5650 | } | |
c5aa993b JM |
5651 | else |
5652 | { /* This is a '|', but not the fourth in a row. | |
5653 | Continue without echoing it. If it isn't actually | |
5654 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5655 | continue; |
5656 | } | |
5657 | } | |
c5aa993b JM |
5658 | else |
5659 | /* Not a '|' */ | |
5660 | { | |
0f71a2f6 JM |
5661 | /* Ensure any pending '|'s are flushed. */ |
5662 | ||
c5aa993b JM |
5663 | for (; escape_count > 0; escape_count--) |
5664 | putchar ('|'); | |
0f71a2f6 | 5665 | } |
0f71a2f6 | 5666 | |
c5aa993b JM |
5667 | if (data == '\r') /* If this is a return character, */ |
5668 | continue; /* - just supress it. */ | |
5669 | ||
5670 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5671 | { |
5672 | if (tty_input[echo_check] == data) | |
5673 | { | |
1ff9c3d6 | 5674 | gdb_assert (echo_check <= sizeof (tty_input)); |
c5aa993b JM |
5675 | echo_check++; /* Character matched user input: */ |
5676 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5677 | } |
c5aa993b JM |
5678 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5679 | { /* End of the line (and of echo checking). */ | |
5680 | echo_check = -1; /* No more echo supression */ | |
5681 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5682 | } |
5683 | else | |
c5aa993b JM |
5684 | { /* Failed check for echo of user input. |
5685 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5686 | int j; |
5687 | ||
c5aa993b | 5688 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5689 | putchar (tty_input[j]); |
5690 | echo_check = -1; | |
5691 | } | |
5692 | } | |
c5aa993b | 5693 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5694 | } |
5695 | ||
c5aa993b JM |
5696 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5697 | return READ_MORE; /* Try to read some more */ | |
5698 | else | |
5699 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5700 | } |
5701 | ||
5702 | static int | |
c2d11a7d | 5703 | readtty (void) |
0f71a2f6 | 5704 | { |
0f71a2f6 JM |
5705 | int tty_bytecount; |
5706 | ||
5707 | /* First, read a buffer full from the terminal */ | |
5708 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5709 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5710 | { |
5711 | perror ("readtty: read failed"); | |
5712 | return FATAL_ERROR; | |
5713 | } | |
5714 | ||
5715 | /* Remove a quoted newline. */ | |
5716 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5717 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5718 | { | |
c5aa993b JM |
5719 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5720 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5721 | } |
5722 | ||
5723 | /* Turn trailing newlines into returns */ | |
5724 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5725 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5726 | |
5727 | /* If the line consists of a ~, enter debugging mode. */ | |
5728 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5729 | return ENTER_DEBUG; | |
5730 | ||
5731 | /* Make this a zero terminated string and write it out */ | |
5732 | tty_input[tty_bytecount] = 0; | |
2cd58942 | 5733 | if (serial_write (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5734 | { |
5735 | perror_with_name ("readtty: write failed"); | |
5736 | return FATAL_ERROR; | |
5737 | } | |
5738 | ||
5739 | return READ_MORE; | |
5740 | } | |
5741 | ||
5742 | static int | |
c2d11a7d | 5743 | minitelnet (void) |
0f71a2f6 JM |
5744 | { |
5745 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5746 | int tablesize; /* max number of FDs for select */ |
5747 | int status; | |
5748 | int quit_count = 0; | |
0f71a2f6 | 5749 | |
0f71a2f6 | 5750 | escape_count = 0; |
c5aa993b | 5751 | echo_check = -1; |
0f71a2f6 JM |
5752 | |
5753 | tablesize = 8 * sizeof (input); | |
5754 | ||
c5aa993b | 5755 | for (;;) |
0f71a2f6 JM |
5756 | { |
5757 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5758 | this must be done *before* the select as there may be |
5759 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5760 | |
c5aa993b | 5761 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5762 | { |
5763 | error ("Debugging terminated by communications error"); | |
5764 | } | |
c5aa993b | 5765 | else if (status != READ_MORE) |
0f71a2f6 JM |
5766 | { |
5767 | return (status); | |
5768 | } | |
5769 | ||
c5aa993b | 5770 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5771 | |
5772 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5773 | |
0f71a2f6 | 5774 | FD_ZERO (&input); |
c5aa993b | 5775 | FD_SET (fileno (stdin), &input); |
2cd58942 | 5776 | FD_SET (deprecated_serial_fd (remote_desc), &input); |
0f71a2f6 JM |
5777 | |
5778 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5779 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5780 | { |
5781 | error ("Communications error on select %d", errno); | |
5782 | } | |
5783 | ||
5784 | /* Handle Control-C typed */ | |
5785 | ||
c5aa993b | 5786 | if (quit_flag) |
0f71a2f6 JM |
5787 | { |
5788 | if ((++quit_count) == 2) | |
5789 | { | |
5790 | if (query ("Interrupt GDB? ")) | |
5791 | { | |
5792 | printf_filtered ("Interrupted by user.\n"); | |
b5a2688f | 5793 | throw_exception (RETURN_QUIT); |
0f71a2f6 JM |
5794 | } |
5795 | quit_count = 0; | |
5796 | } | |
5797 | quit_flag = 0; | |
5798 | ||
5799 | if (remote_break) | |
2cd58942 | 5800 | serial_send_break (remote_desc); |
0f71a2f6 | 5801 | else |
2cd58942 | 5802 | serial_write (remote_desc, "\003", 1); |
0f71a2f6 JM |
5803 | |
5804 | continue; | |
5805 | } | |
5806 | ||
5807 | /* Handle console input */ | |
5808 | ||
c5aa993b | 5809 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5810 | { |
5811 | quit_count = 0; | |
5812 | echo_check = 0; | |
5813 | status = readtty (); | |
5814 | if (status == READ_MORE) | |
5815 | continue; | |
5816 | ||
5817 | return status; /* telnet session ended */ | |
5818 | } | |
5819 | } | |
5820 | } | |
5821 | ||
39f77062 KB |
5822 | static ptid_t |
5823 | remote_cisco_wait (ptid_t ptid, struct target_waitstatus *status) | |
0f71a2f6 | 5824 | { |
c5aa993b | 5825 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5826 | { |
5827 | error ("Debugging session terminated by protocol error"); | |
5828 | } | |
5829 | putpkt ("?"); | |
39f77062 | 5830 | return remote_wait (ptid, status); |
0f71a2f6 JM |
5831 | } |
5832 | ||
5833 | static void | |
fba45db2 | 5834 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5835 | { |
5836 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5837 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5838 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5839 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5840 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5841 | remote_cisco_ops.to_open = remote_cisco_open; |
5842 | remote_cisco_ops.to_close = remote_cisco_close; | |
5843 | remote_cisco_ops.to_detach = remote_detach; | |
6ad8ae5c | 5844 | remote_cisco_ops.to_disconnect = remote_disconnect; |
c5aa993b JM |
5845 | remote_cisco_ops.to_resume = remote_resume; |
5846 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5847 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5848 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5849 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5850 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5851 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 | 5852 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
3c3bea1c GS |
5853 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; |
5854 | remote_cisco_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5855 | remote_cisco_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5856 | remote_cisco_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5857 | remote_cisco_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5858 | remote_cisco_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5859 | remote_cisco_ops.to_stopped_data_address = remote_stopped_data_address; | |
5860 | remote_cisco_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
c5aa993b JM |
5861 | remote_cisco_ops.to_kill = remote_kill; |
5862 | remote_cisco_ops.to_load = generic_load; | |
5863 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5864 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5865 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5866 | remote_cisco_ops.to_pid_to_str = remote_pid_to_str; |
5867 | remote_cisco_ops.to_extra_thread_info = remote_threads_extra_info; | |
c5aa993b JM |
5868 | remote_cisco_ops.to_stratum = process_stratum; |
5869 | remote_cisco_ops.to_has_all_memory = 1; | |
5870 | remote_cisco_ops.to_has_memory = 1; | |
5871 | remote_cisco_ops.to_has_stack = 1; | |
5872 | remote_cisco_ops.to_has_registers = 1; | |
5873 | remote_cisco_ops.to_has_execution = 1; | |
5874 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5875 | } |
5876 | ||
6426a772 JM |
5877 | static int |
5878 | remote_can_async_p (void) | |
5879 | { | |
5880 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5881 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5882 | } |
5883 | ||
5884 | static int | |
5885 | remote_is_async_p (void) | |
5886 | { | |
5887 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5888 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5889 | } |
5890 | ||
2acceee2 JM |
5891 | /* Pass the SERIAL event on and up to the client. One day this code |
5892 | will be able to delay notifying the client of an event until the | |
5893 | point where an entire packet has been received. */ | |
5894 | ||
5895 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5896 | static void *async_client_context; | |
5897 | static serial_event_ftype remote_async_serial_handler; | |
5898 | ||
6426a772 | 5899 | static void |
819cc324 | 5900 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5901 | { |
2acceee2 JM |
5902 | /* Don't propogate error information up to the client. Instead let |
5903 | the client find out about the error by querying the target. */ | |
5904 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5905 | } | |
5906 | ||
5907 | static void | |
5908 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5909 | { | |
ed9a39eb | 5910 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5911 | internal_error (__FILE__, __LINE__, |
5912 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5913 | |
2acceee2 JM |
5914 | if (callback != NULL) |
5915 | { | |
2cd58942 | 5916 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5917 | async_client_callback = callback; |
5918 | async_client_context = context; | |
5919 | } | |
5920 | else | |
2cd58942 | 5921 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5922 | } |
5923 | ||
43ff13b4 JM |
5924 | /* Target async and target extended-async. |
5925 | ||
5926 | This are temporary targets, until it is all tested. Eventually | |
5927 | async support will be incorporated int the usual 'remote' | |
5928 | target. */ | |
5929 | ||
5930 | static void | |
c2d11a7d | 5931 | init_remote_async_ops (void) |
43ff13b4 JM |
5932 | { |
5933 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5934 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5935 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5936 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5937 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5938 | remote_async_ops.to_open = remote_async_open; |
5939 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5940 | remote_async_ops.to_detach = remote_detach; |
5941 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5942 | remote_async_ops.to_resume = remote_async_resume; |
5943 | remote_async_ops.to_wait = remote_async_wait; | |
5944 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5945 | remote_async_ops.to_store_registers = remote_store_registers; | |
5946 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5947 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5948 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5949 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5950 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5951 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5952 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5953 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5954 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5955 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5956 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5957 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5958 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5959 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5960 | remote_async_ops.to_kill = remote_async_kill; |
5961 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5962 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5963 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5964 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5965 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5966 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 JM |
5967 | remote_async_ops.to_stop = remote_stop; |
5968 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5969 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5970 | remote_async_ops.to_stratum = process_stratum; |
5971 | remote_async_ops.to_has_all_memory = 1; | |
5972 | remote_async_ops.to_has_memory = 1; | |
5973 | remote_async_ops.to_has_stack = 1; | |
5974 | remote_async_ops.to_has_registers = 1; | |
5975 | remote_async_ops.to_has_execution = 1; | |
5976 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5977 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5978 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5979 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5980 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5981 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5982 | } |
5983 | ||
5984 | /* Set up the async extended remote vector by making a copy of the standard | |
5985 | remote vector and adding to it. */ | |
5986 | ||
5987 | static void | |
c2d11a7d | 5988 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5989 | { |
5990 | extended_async_remote_ops = remote_async_ops; | |
5991 | ||
5992 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5993 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5994 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5995 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5996 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5997 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5998 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5999 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6000 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6001 | } | |
6002 | ||
5a2468f5 | 6003 | static void |
c2d11a7d | 6004 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6005 | { |
5a2468f5 JM |
6006 | } |
6007 | ||
d471ea57 AC |
6008 | static void |
6009 | show_remote_cmd (char *args, int from_tty) | |
6010 | { | |
e9e68a56 AC |
6011 | /* FIXME: cagney/2002-06-15: This function should iterate over |
6012 | remote_show_cmdlist for a list of sub commands to show. */ | |
6013 | show_remote_protocol_Z_packet_cmd (args, from_tty, NULL); | |
6014 | show_remote_protocol_e_packet_cmd (args, from_tty, NULL); | |
6015 | show_remote_protocol_E_packet_cmd (args, from_tty, NULL); | |
6016 | show_remote_protocol_P_packet_cmd (args, from_tty, NULL); | |
6017 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL); | |
506fb367 | 6018 | show_remote_protocol_vcont_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 6019 | show_remote_protocol_binary_download_cmd (args, from_tty, NULL); |
d471ea57 | 6020 | } |
5a2468f5 | 6021 | |
0f71a2f6 | 6022 | static void |
fba45db2 | 6023 | build_remote_gdbarch_data (void) |
0f71a2f6 | 6024 | { |
d696208f | 6025 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
6026 | } |
6027 | ||
dc8acb97 MS |
6028 | /* Saved pointer to previous owner of the new_objfile event. */ |
6029 | static void (*remote_new_objfile_chain) (struct objfile *); | |
6030 | ||
6031 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
6032 | static void | |
6033 | remote_new_objfile (struct objfile *objfile) | |
6034 | { | |
6035 | if (remote_desc != 0) /* Have a remote connection */ | |
6036 | { | |
6037 | remote_check_symbols (objfile); | |
6038 | } | |
6039 | /* Call predecessor on chain, if any. */ | |
6040 | if (remote_new_objfile_chain != 0 && | |
6041 | remote_desc == 0) | |
6042 | remote_new_objfile_chain (objfile); | |
6043 | } | |
6044 | ||
c906108c | 6045 | void |
fba45db2 | 6046 | _initialize_remote (void) |
c906108c | 6047 | { |
5a2468f5 JM |
6048 | static struct cmd_list_element *remote_set_cmdlist; |
6049 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 6050 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 6051 | |
0f71a2f6 | 6052 | /* architecture specific data */ |
fcc1c85c | 6053 | remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state); |
d01949b6 AC |
6054 | |
6055 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
6056 | that the remote protocol has been initialized. */ | |
11cf8741 JM |
6057 | register_gdbarch_swap (&remote_address_size, |
6058 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
6059 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
6060 | ||
c906108c SS |
6061 | init_remote_ops (); |
6062 | add_target (&remote_ops); | |
6063 | ||
6064 | init_extended_remote_ops (); | |
6065 | add_target (&extended_remote_ops); | |
cce74817 | 6066 | |
43ff13b4 JM |
6067 | init_remote_async_ops (); |
6068 | add_target (&remote_async_ops); | |
6069 | ||
6070 | init_extended_async_remote_ops (); | |
6071 | add_target (&extended_async_remote_ops); | |
6072 | ||
0f71a2f6 JM |
6073 | init_remote_cisco_ops (); |
6074 | add_target (&remote_cisco_ops); | |
6075 | ||
dc8acb97 MS |
6076 | /* Hook into new objfile notification. */ |
6077 | remote_new_objfile_chain = target_new_objfile_hook; | |
6078 | target_new_objfile_hook = remote_new_objfile; | |
6079 | ||
c906108c SS |
6080 | #if 0 |
6081 | init_remote_threadtests (); | |
6082 | #endif | |
6083 | ||
d471ea57 AC |
6084 | /* set/show remote ... */ |
6085 | ||
5a2468f5 JM |
6086 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
6087 | Remote protocol specific variables\n\ | |
6088 | Configure various remote-protocol specific variables such as\n\ | |
6089 | the packets being used", | |
cff3e48b | 6090 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 6091 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 6092 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
6093 | Remote protocol specific variables\n\ |
6094 | Configure various remote-protocol specific variables such as\n\ | |
6095 | the packets being used", | |
cff3e48b | 6096 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
6097 | 0/*allow-unknown*/, &showlist); |
6098 | ||
c5aa993b | 6099 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 6100 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 6101 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
6102 | &cmdlist); |
6103 | ||
6104 | add_cmd ("packet", class_maintenance, packet_command, | |
6105 | "Send an arbitrary packet to a remote target.\n\ | |
6106 | maintenance packet TEXT\n\ | |
6107 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6108 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6109 | response packet. GDB supplies the initial `$' character, and the\n\ | |
6110 | terminating `#' character and checksum.", | |
6111 | &maintenancelist); | |
6112 | ||
e707bbc2 AC |
6113 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, |
6114 | "Set whether to send break if interrupted.\n", | |
6115 | "Show whether to send break if interrupted.\n", | |
6116 | NULL, NULL, | |
6117 | &setlist, &showlist); | |
c906108c | 6118 | |
11cf8741 JM |
6119 | /* Install commands for configuring memory read/write packets. */ |
6120 | ||
6121 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
6122 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
6123 | &setlist); | |
4ad5b0f7 | 6124 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
6125 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
6126 | &showlist); | |
6127 | add_cmd ("memory-write-packet-size", no_class, | |
6128 | set_memory_write_packet_size, | |
6129 | "Set the maximum number of bytes per memory-write packet.\n" | |
6130 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6131 | "default packet size. The actual limit is further reduced\n" | |
6132 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6133 | "further restriction and ``limit'' to enable that restriction\n", | |
6134 | &remote_set_cmdlist); | |
6135 | add_cmd ("memory-read-packet-size", no_class, | |
6136 | set_memory_read_packet_size, | |
6137 | "Set the maximum number of bytes per memory-read packet.\n" | |
6138 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6139 | "default packet size. The actual limit is further reduced\n" | |
6140 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6141 | "further restriction and ``limit'' to enable that restriction\n", | |
6142 | &remote_set_cmdlist); | |
6143 | add_cmd ("memory-write-packet-size", no_class, | |
6144 | show_memory_write_packet_size, | |
6145 | "Show the maximum number of bytes per memory-write packet.\n", | |
6146 | &remote_show_cmdlist); | |
6147 | add_cmd ("memory-read-packet-size", no_class, | |
6148 | show_memory_read_packet_size, | |
6149 | "Show the maximum number of bytes per memory-read packet.\n", | |
6150 | &remote_show_cmdlist); | |
c906108c | 6151 | |
501eef12 AC |
6152 | add_setshow_cmd ("hardware-watchpoint-limit", no_class, |
6153 | var_zinteger, &remote_hw_watchpoint_limit, "\ | |
6154 | Set the maximum number of target hardware watchpoints.\n\ | |
6155 | Specify a negative limit for unlimited.", "\ | |
6156 | Show the maximum number of target hardware watchpoints.\n", | |
6157 | NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist); | |
6158 | add_setshow_cmd ("hardware-breakpoint-limit", no_class, | |
6159 | var_zinteger, &remote_hw_breakpoint_limit, "\ | |
6160 | Set the maximum number of target hardware breakpoints.\n\ | |
6161 | Specify a negative limit for unlimited.", "\ | |
6162 | Show the maximum number of target hardware breakpoints.\n", | |
6163 | NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist); | |
6164 | ||
c5aa993b | 6165 | add_show_from_set |
c906108c | 6166 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 6167 | var_integer, (char *) &remote_address_size, |
c906108c SS |
6168 | "Set the maximum size of the address (in bits) \ |
6169 | in a memory packet.\n", | |
6170 | &setlist), | |
c5aa993b | 6171 | &showlist); |
c906108c | 6172 | |
96baa820 JM |
6173 | add_packet_config_cmd (&remote_protocol_binary_download, |
6174 | "X", "binary-download", | |
6175 | set_remote_protocol_binary_download_cmd, | |
6176 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
6177 | &remote_set_cmdlist, &remote_show_cmdlist, |
6178 | 1); | |
96baa820 JM |
6179 | #if 0 |
6180 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
6181 | compatibility. */ | |
c5aa993b | 6182 | add_show_from_set |
b83266a0 SS |
6183 | (add_set_cmd ("remotebinarydownload", no_class, |
6184 | var_boolean, (char *) &remote_binary_download, | |
6185 | "Set binary downloads.\n", &setlist), | |
6186 | &showlist); | |
96baa820 | 6187 | #endif |
0f71a2f6 JM |
6188 | |
6189 | add_info ("remote-process", remote_info_process, | |
6190 | "Query the remote system for process info."); | |
6191 | ||
506fb367 DJ |
6192 | add_packet_config_cmd (&remote_protocol_vcont, |
6193 | "vCont", "verbose-resume", | |
6194 | set_remote_protocol_vcont_packet_cmd, | |
6195 | show_remote_protocol_vcont_packet_cmd, | |
6196 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6197 | 0); | |
6198 | ||
dc8acb97 MS |
6199 | add_packet_config_cmd (&remote_protocol_qSymbol, |
6200 | "qSymbol", "symbol-lookup", | |
6201 | set_remote_protocol_qSymbol_packet_cmd, | |
6202 | show_remote_protocol_qSymbol_packet_cmd, | |
6203 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6204 | 0); | |
6205 | ||
44eaed12 C |
6206 | add_packet_config_cmd (&remote_protocol_e, |
6207 | "e", "step-over-range", | |
6208 | set_remote_protocol_e_packet_cmd, | |
6209 | show_remote_protocol_e_packet_cmd, | |
6210 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6211 | 0); | |
0f017ab9 AC |
6212 | /* Disable by default. The ``e'' packet has nasty interactions with |
6213 | the threading code - it relies on global state. */ | |
7f19b9a2 | 6214 | remote_protocol_e.detect = AUTO_BOOLEAN_FALSE; |
0f017ab9 | 6215 | update_packet_config (&remote_protocol_e); |
44eaed12 C |
6216 | |
6217 | add_packet_config_cmd (&remote_protocol_E, | |
6218 | "E", "step-over-range-w-signal", | |
6219 | set_remote_protocol_E_packet_cmd, | |
6220 | show_remote_protocol_E_packet_cmd, | |
6221 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6222 | 0); | |
0f017ab9 AC |
6223 | /* Disable by default. The ``e'' packet has nasty interactions with |
6224 | the threading code - it relies on global state. */ | |
7f19b9a2 | 6225 | remote_protocol_E.detect = AUTO_BOOLEAN_FALSE; |
0f017ab9 | 6226 | update_packet_config (&remote_protocol_E); |
44eaed12 | 6227 | |
d471ea57 AC |
6228 | add_packet_config_cmd (&remote_protocol_P, |
6229 | "P", "set-register", | |
5a2468f5 JM |
6230 | set_remote_protocol_P_packet_cmd, |
6231 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
6232 | &remote_set_cmdlist, &remote_show_cmdlist, |
6233 | 1); | |
6234 | ||
6235 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
6236 | "Z0", "software-breakpoint", | |
6237 | set_remote_protocol_Z_software_bp_packet_cmd, | |
6238 | show_remote_protocol_Z_software_bp_packet_cmd, | |
6239 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6240 | 0); | |
6241 | ||
6242 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
6243 | "Z1", "hardware-breakpoint", | |
6244 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
6245 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
6246 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6247 | 0); | |
6248 | ||
6249 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
6250 | "Z2", "write-watchpoint", | |
6251 | set_remote_protocol_Z_write_wp_packet_cmd, | |
6252 | show_remote_protocol_Z_write_wp_packet_cmd, | |
6253 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6254 | 0); | |
6255 | ||
6256 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
6257 | "Z3", "read-watchpoint", | |
6258 | set_remote_protocol_Z_read_wp_packet_cmd, | |
6259 | show_remote_protocol_Z_read_wp_packet_cmd, | |
6260 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6261 | 0); | |
6262 | ||
6263 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
6264 | "Z4", "access-watchpoint", | |
6265 | set_remote_protocol_Z_access_wp_packet_cmd, | |
6266 | show_remote_protocol_Z_access_wp_packet_cmd, | |
6267 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6268 | 0); | |
6269 | ||
6270 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
e9e68a56 AC |
6271 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
6272 | &remote_Z_packet_detect, "\ | |
6273 | Set use of remote protocol `Z' packets", | |
6274 | "Show use of remote protocol `Z' packets ", | |
6275 | set_remote_protocol_Z_packet_cmd, | |
6276 | show_remote_protocol_Z_packet_cmd, | |
6277 | &remote_set_cmdlist, &remote_show_cmdlist); | |
449092f6 CV |
6278 | |
6279 | /* Eventually initialize fileio. See fileio.c */ | |
6280 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 6281 | } |