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 | ||
c906108c | 58 | /* Prototypes for local functions */ |
6426a772 JM |
59 | static void cleanup_sigint_signal_handler (void *dummy); |
60 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 61 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 62 | |
a14ed312 KB |
63 | static void handle_remote_sigint (int); |
64 | static void handle_remote_sigint_twice (int); | |
65 | static void async_remote_interrupt (gdb_client_data); | |
66 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 67 | |
a14ed312 | 68 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 69 | |
917317f4 | 70 | static int remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 71 | |
a14ed312 | 72 | static int remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 73 | |
a14ed312 | 74 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 75 | |
a14ed312 KB |
76 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
77 | int len, int should_write, | |
29e57380 | 78 | struct mem_attrib *attrib, |
a14ed312 | 79 | struct target_ops *target); |
c906108c | 80 | |
a14ed312 | 81 | static void remote_prepare_to_store (void); |
c906108c | 82 | |
a14ed312 | 83 | static void remote_fetch_registers (int regno); |
c906108c | 84 | |
39f77062 KB |
85 | static void remote_resume (ptid_t ptid, int step, |
86 | enum target_signal siggnal); | |
87 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 88 | enum target_signal siggnal); |
36918e70 | 89 | static int remote_start_remote (struct ui_out *uiout, void *dummy); |
c906108c | 90 | |
a14ed312 KB |
91 | static void remote_open (char *name, int from_tty); |
92 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 93 | |
a14ed312 KB |
94 | static void extended_remote_open (char *name, int from_tty); |
95 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 96 | |
a14ed312 KB |
97 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
98 | static void remote_async_open_1 (char *, int, struct target_ops *, | |
99 | int extended_p); | |
c906108c | 100 | |
a14ed312 | 101 | static void remote_close (int quitting); |
c906108c | 102 | |
a14ed312 | 103 | static void remote_store_registers (int regno); |
c906108c | 104 | |
a14ed312 KB |
105 | static void remote_mourn (void); |
106 | static void remote_async_mourn (void); | |
c906108c | 107 | |
a14ed312 | 108 | static void extended_remote_restart (void); |
c906108c | 109 | |
a14ed312 | 110 | static void extended_remote_mourn (void); |
c906108c | 111 | |
a14ed312 KB |
112 | static void extended_remote_create_inferior (char *, char *, char **); |
113 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 114 | |
a14ed312 | 115 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 116 | |
c2d11a7d | 117 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 118 | |
a14ed312 | 119 | static int readchar (int timeout); |
c906108c | 120 | |
39f77062 KB |
121 | static ptid_t remote_wait (ptid_t ptid, |
122 | struct target_waitstatus *status); | |
123 | static ptid_t remote_async_wait (ptid_t ptid, | |
124 | struct target_waitstatus *status); | |
c906108c | 125 | |
a14ed312 KB |
126 | static void remote_kill (void); |
127 | static void remote_async_kill (void); | |
c906108c | 128 | |
a14ed312 | 129 | static int tohex (int nib); |
c906108c | 130 | |
a14ed312 KB |
131 | static void remote_detach (char *args, int from_tty); |
132 | static void remote_async_detach (char *args, int from_tty); | |
c906108c | 133 | |
a14ed312 | 134 | static void remote_interrupt (int signo); |
c906108c | 135 | |
a14ed312 | 136 | static void remote_interrupt_twice (int signo); |
7a292a7a | 137 | |
a14ed312 | 138 | static void interrupt_query (void); |
c906108c | 139 | |
a14ed312 | 140 | static void set_thread (int, int); |
c906108c | 141 | |
39f77062 | 142 | static int remote_thread_alive (ptid_t); |
c906108c | 143 | |
a14ed312 | 144 | static void get_offsets (void); |
c906108c | 145 | |
c2d11a7d | 146 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 147 | |
a14ed312 | 148 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 149 | |
a14ed312 | 150 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 151 | |
a14ed312 | 152 | static int hexnumlen (ULONGEST num); |
c906108c | 153 | |
a14ed312 | 154 | static void init_remote_ops (void); |
c906108c | 155 | |
a14ed312 | 156 | static void init_extended_remote_ops (void); |
c906108c | 157 | |
a14ed312 | 158 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
159 | |
160 | static struct target_ops remote_cisco_ops; | |
161 | ||
a14ed312 | 162 | static void remote_stop (void); |
c906108c | 163 | |
a14ed312 | 164 | static int ishex (int ch, int *val); |
c906108c | 165 | |
a14ed312 | 166 | static int stubhex (int ch); |
c906108c | 167 | |
a14ed312 | 168 | static int remote_query (int /*char */ , char *, char *, int *); |
c906108c | 169 | |
a14ed312 | 170 | static int hexnumstr (char *, ULONGEST); |
c906108c | 171 | |
a14ed312 | 172 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 173 | |
a14ed312 | 174 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 175 | |
a14ed312 | 176 | static void print_packet (char *); |
c906108c | 177 | |
a14ed312 | 178 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 179 | |
a14ed312 | 180 | static void compare_sections_command (char *, int); |
c906108c | 181 | |
a14ed312 | 182 | static void packet_command (char *, int); |
c906108c | 183 | |
a14ed312 | 184 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 185 | |
39f77062 | 186 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 187 | |
a14ed312 | 188 | static void remote_find_new_threads (void); |
c906108c | 189 | |
a14ed312 | 190 | static void record_currthread (int currthread); |
c906108c | 191 | |
30559e10 | 192 | static int fromhex (int a); |
c906108c | 193 | |
dc8acb97 | 194 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 195 | |
dc8acb97 | 196 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 197 | |
a14ed312 | 198 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 199 | |
a14ed312 | 200 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 201 | |
5a2468f5 | 202 | struct packet_config; |
5a2468f5 | 203 | |
a14ed312 | 204 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 205 | |
d471ea57 | 206 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 207 | |
c906108c SS |
208 | /* Define the target subroutine names */ |
209 | ||
a14ed312 | 210 | void open_remote_target (char *, int, struct target_ops *, int); |
c906108c | 211 | |
a14ed312 | 212 | void _initialize_remote (void); |
c906108c | 213 | |
694f61fb | 214 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
215 | target is open()ed, remote.c should create a per-target description |
216 | of the remote protocol using that target's architecture. | |
217 | Unfortunatly, the target stack doesn't include local state. For | |
218 | the moment keep the information in the target's architecture | |
219 | object. Sigh.. */ | |
220 | ||
ad10f812 AC |
221 | struct packet_reg |
222 | { | |
223 | long offset; /* Offset into G packet. */ | |
224 | long regnum; /* GDB's internal register number. */ | |
225 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 226 | int in_g_packet; /* Always part of G packet. */ |
ad10f812 AC |
227 | /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */ |
228 | /* char *name; == REGISTER_NAME (regnum); at present. */ | |
229 | }; | |
230 | ||
d01949b6 AC |
231 | struct remote_state |
232 | { | |
ad10f812 AC |
233 | /* Description of the remote protocol registers. */ |
234 | long sizeof_g_packet; | |
b323314b AC |
235 | |
236 | /* Description of the remote protocol registers indexed by REGNUM | |
237 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
238 | struct packet_reg *regs; | |
ad10f812 | 239 | |
d01949b6 AC |
240 | /* This is the size (in chars) of the first response to the ``g'' |
241 | packet. It is used as a heuristic when determining the maximum | |
242 | size of memory-read and memory-write packets. A target will | |
243 | typically only reserve a buffer large enough to hold the ``g'' | |
244 | packet. The size does not include packet overhead (headers and | |
245 | trailers). */ | |
246 | long actual_register_packet_size; | |
247 | ||
248 | /* This is the maximum size (in chars) of a non read/write packet. | |
249 | It is also used as a cap on the size of read/write packets. */ | |
250 | long remote_packet_size; | |
251 | }; | |
252 | ||
3c3bea1c | 253 | |
d01949b6 AC |
254 | /* Handle for retreving the remote protocol data from gdbarch. */ |
255 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
256 | ||
257 | static struct remote_state * | |
5ae5f592 | 258 | get_remote_state (void) |
d01949b6 | 259 | { |
451fbdda | 260 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
261 | } |
262 | ||
263 | static void * | |
264 | init_remote_state (struct gdbarch *gdbarch) | |
265 | { | |
266 | int regnum; | |
267 | struct remote_state *rs = xmalloc (sizeof (struct remote_state)); | |
268 | ||
ad10f812 AC |
269 | /* Start out by having the remote protocol mimic the existing |
270 | behavour - just copy in the description of the register cache. */ | |
271 | rs->sizeof_g_packet = REGISTER_BYTES; /* OK use. */ | |
272 | ||
b323314b AC |
273 | /* Assume a 1:1 regnum<->pnum table. */ |
274 | rs->regs = xcalloc (NUM_REGS + NUM_PSEUDO_REGS, sizeof (struct packet_reg)); | |
275 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) | |
ad10f812 | 276 | { |
b323314b AC |
277 | struct packet_reg *r = &rs->regs[regnum]; |
278 | r->pnum = regnum; | |
279 | r->regnum = regnum; | |
280 | r->offset = REGISTER_BYTE (regnum); | |
281 | r->in_g_packet = (regnum < NUM_REGS); | |
ad10f812 AC |
282 | /* ...size = REGISTER_RAW_SIZE (regnum); */ |
283 | /* ...name = REGISTER_NAME (regnum); */ | |
284 | } | |
285 | ||
d01949b6 AC |
286 | /* Default maximum number of characters in a packet body. Many |
287 | remote stubs have a hardwired buffer size of 400 bytes | |
288 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
289 | as the maximum packet-size to ensure that the packet and an extra | |
290 | NUL character can always fit in the buffer. This stops GDB | |
291 | trashing stubs that try to squeeze an extra NUL into what is | |
292 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
293 | rs->remote_packet_size = 400 - 1; | |
294 | ||
ad10f812 AC |
295 | /* Should rs->sizeof_g_packet needs more space than the |
296 | default, adjust the size accordingly. Remember that each byte is | |
297 | encoded as two characters. 32 is the overhead for the packet | |
298 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 AC |
299 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
300 | little. */ | |
ad10f812 AC |
301 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
302 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
d01949b6 AC |
303 | |
304 | /* This one is filled in when a ``g'' packet is received. */ | |
305 | rs->actual_register_packet_size = 0; | |
306 | ||
307 | return rs; | |
308 | } | |
309 | ||
310 | static void | |
311 | free_remote_state (struct gdbarch *gdbarch, void *pointer) | |
312 | { | |
ad10f812 | 313 | struct remote_state *data = pointer; |
b323314b | 314 | xfree (data->regs); |
ad10f812 AC |
315 | xfree (data); |
316 | } | |
317 | ||
318 | static struct packet_reg * | |
319 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
320 | { | |
b323314b AC |
321 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
322 | return NULL; | |
323 | else | |
ad10f812 | 324 | { |
b323314b AC |
325 | struct packet_reg *r = &rs->regs[regnum]; |
326 | gdb_assert (r->regnum == regnum); | |
327 | return r; | |
ad10f812 | 328 | } |
ad10f812 AC |
329 | } |
330 | ||
331 | static struct packet_reg * | |
332 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
333 | { | |
b323314b AC |
334 | int i; |
335 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 336 | { |
b323314b AC |
337 | struct packet_reg *r = &rs->regs[i]; |
338 | if (r->pnum == pnum) | |
339 | return r; | |
ad10f812 AC |
340 | } |
341 | return NULL; | |
d01949b6 AC |
342 | } |
343 | ||
3c3bea1c GS |
344 | /* FIXME: graces/2002-08-08: These variables should eventually be |
345 | bound to an instance of the target object (as in gdbarch-tdep()), | |
346 | when such a thing exists. */ | |
347 | ||
348 | /* This is set to the data address of the access causing the target | |
349 | to stop for a watchpoint. */ | |
350 | static CORE_ADDR remote_watch_data_address; | |
351 | ||
352 | /* This is non-zero if taregt stopped for a watchpoint. */ | |
353 | static int remote_stopped_by_watchpoint_p; | |
354 | ||
c906108c SS |
355 | |
356 | static struct target_ops remote_ops; | |
357 | ||
358 | static struct target_ops extended_remote_ops; | |
359 | ||
43ff13b4 JM |
360 | /* Temporary target ops. Just like the remote_ops and |
361 | extended_remote_ops, but with asynchronous support. */ | |
362 | static struct target_ops remote_async_ops; | |
363 | ||
364 | static struct target_ops extended_async_remote_ops; | |
365 | ||
6426a772 JM |
366 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
367 | ``forever'' still use the normal timeout mechanism. This is | |
368 | currently used by the ASYNC code to guarentee that target reads | |
369 | during the initial connect always time-out. Once getpkt has been | |
370 | modified to return a timeout indication and, in turn | |
371 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
372 | this can go away. */ | |
373 | static int wait_forever_enabled_p = 1; | |
374 | ||
375 | ||
c906108c SS |
376 | /* This variable chooses whether to send a ^C or a break when the user |
377 | requests program interruption. Although ^C is usually what remote | |
378 | systems expect, and that is the default here, sometimes a break is | |
379 | preferable instead. */ | |
380 | ||
381 | static int remote_break; | |
382 | ||
c906108c SS |
383 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
384 | remote_open knows that we don't have a file open when the program | |
385 | starts. */ | |
819cc324 | 386 | static struct serial *remote_desc = NULL; |
c906108c | 387 | |
0f71a2f6 JM |
388 | /* This is set by the target (thru the 'S' message) |
389 | to denote that the target is in kernel mode. */ | |
390 | static int cisco_kernel_mode = 0; | |
391 | ||
c906108c SS |
392 | /* This variable sets the number of bits in an address that are to be |
393 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
394 | leading zeros, the entire address would be sent. This variable | |
395 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
396 | initial implementation of remote.c restricted the address sent in | |
397 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
398 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
399 | address was never sent. Since fixing this bug may cause a break in | |
400 | some remote targets this variable is principly provided to | |
401 | facilitate backward compatibility. */ | |
402 | ||
403 | static int remote_address_size; | |
404 | ||
6426a772 JM |
405 | /* Tempoary to track who currently owns the terminal. See |
406 | target_async_terminal_* for more details. */ | |
407 | ||
408 | static int remote_async_terminal_ours_p; | |
409 | ||
11cf8741 | 410 | \f |
11cf8741 | 411 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
412 | memory read/write packet. MIN ((rs->remote_packet_size), |
413 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
414 | values (fifo overruns, et.al.) and some users need larger values | |
415 | (speed up transfers). The variables ``preferred_*'' (the user | |
416 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
417 | (Positive - a soft limit, negative - a hard limit). */ | |
11cf8741 JM |
418 | |
419 | struct memory_packet_config | |
420 | { | |
421 | char *name; | |
422 | long size; | |
423 | int fixed_p; | |
424 | }; | |
425 | ||
426 | /* Compute the current size of a read/write packet. Since this makes | |
427 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
428 | ||
429 | static long | |
430 | get_memory_packet_size (struct memory_packet_config *config) | |
431 | { | |
d01949b6 | 432 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
433 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
434 | law?) that some hosts don't cope very well with large alloca() | |
435 | calls. Eventually the alloca() code will be replaced by calls to | |
436 | xmalloc() and make_cleanups() allowing this restriction to either | |
437 | be lifted or removed. */ | |
438 | #ifndef MAX_REMOTE_PACKET_SIZE | |
439 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
440 | #endif | |
441 | /* NOTE: 16 is just chosen at random. */ | |
442 | #ifndef MIN_REMOTE_PACKET_SIZE | |
443 | #define MIN_REMOTE_PACKET_SIZE 16 | |
444 | #endif | |
445 | long what_they_get; | |
446 | if (config->fixed_p) | |
447 | { | |
448 | if (config->size <= 0) | |
449 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
450 | else | |
451 | what_they_get = config->size; | |
452 | } | |
453 | else | |
454 | { | |
d01949b6 | 455 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
456 | /* Limit the packet to the size specified by the user. */ |
457 | if (config->size > 0 | |
458 | && what_they_get > config->size) | |
459 | what_they_get = config->size; | |
460 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
461 | if ((rs->actual_register_packet_size) > 0 |
462 | && what_they_get > (rs->actual_register_packet_size)) | |
463 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
464 | } |
465 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
466 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
467 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
468 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
469 | return what_they_get; | |
470 | } | |
471 | ||
472 | /* Update the size of a read/write packet. If they user wants | |
473 | something really big then do a sanity check. */ | |
474 | ||
475 | static void | |
476 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
477 | { | |
478 | int fixed_p = config->fixed_p; | |
479 | long size = config->size; | |
480 | if (args == NULL) | |
481 | error ("Argument required (integer, `fixed' or `limited')."); | |
482 | else if (strcmp (args, "hard") == 0 | |
483 | || strcmp (args, "fixed") == 0) | |
484 | fixed_p = 1; | |
485 | else if (strcmp (args, "soft") == 0 | |
486 | || strcmp (args, "limit") == 0) | |
487 | fixed_p = 0; | |
488 | else | |
489 | { | |
490 | char *end; | |
491 | size = strtoul (args, &end, 0); | |
492 | if (args == end) | |
493 | error ("Invalid %s (bad syntax).", config->name); | |
494 | #if 0 | |
495 | /* Instead of explicitly capping the size of a packet to | |
496 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
497 | instead allowed to set the size to something arbitrarily | |
498 | large. */ | |
499 | if (size > MAX_REMOTE_PACKET_SIZE) | |
500 | error ("Invalid %s (too large).", config->name); | |
501 | #endif | |
502 | } | |
503 | /* Extra checks? */ | |
504 | if (fixed_p && !config->fixed_p) | |
505 | { | |
506 | if (! query ("The target may not be able to correctly handle a %s\n" | |
507 | "of %ld bytes. Change the packet size? ", | |
508 | config->name, size)) | |
509 | error ("Packet size not changed."); | |
510 | } | |
511 | /* Update the config. */ | |
512 | config->fixed_p = fixed_p; | |
513 | config->size = size; | |
514 | } | |
515 | ||
516 | static void | |
517 | show_memory_packet_size (struct memory_packet_config *config) | |
518 | { | |
519 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
520 | if (config->fixed_p) | |
521 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
522 | get_memory_packet_size (config)); | |
523 | else | |
524 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
525 | get_memory_packet_size (config)); | |
526 | } | |
527 | ||
528 | static struct memory_packet_config memory_write_packet_config = | |
529 | { | |
530 | "memory-write-packet-size", | |
531 | }; | |
532 | ||
533 | static void | |
534 | set_memory_write_packet_size (char *args, int from_tty) | |
535 | { | |
536 | set_memory_packet_size (args, &memory_write_packet_config); | |
537 | } | |
538 | ||
539 | static void | |
540 | show_memory_write_packet_size (char *args, int from_tty) | |
541 | { | |
542 | show_memory_packet_size (&memory_write_packet_config); | |
543 | } | |
544 | ||
545 | static long | |
546 | get_memory_write_packet_size (void) | |
547 | { | |
548 | return get_memory_packet_size (&memory_write_packet_config); | |
549 | } | |
550 | ||
551 | static struct memory_packet_config memory_read_packet_config = | |
552 | { | |
553 | "memory-read-packet-size", | |
554 | }; | |
555 | ||
556 | static void | |
557 | set_memory_read_packet_size (char *args, int from_tty) | |
558 | { | |
559 | set_memory_packet_size (args, &memory_read_packet_config); | |
560 | } | |
561 | ||
562 | static void | |
563 | show_memory_read_packet_size (char *args, int from_tty) | |
564 | { | |
565 | show_memory_packet_size (&memory_read_packet_config); | |
566 | } | |
567 | ||
568 | static long | |
569 | get_memory_read_packet_size (void) | |
570 | { | |
d01949b6 | 571 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
572 | long size = get_memory_packet_size (&memory_read_packet_config); |
573 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
574 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
575 | increased beyond (rs->remote_packet_size). */ |
576 | if (size > (rs->remote_packet_size)) | |
577 | size = (rs->remote_packet_size); | |
11cf8741 JM |
578 | return size; |
579 | } | |
580 | ||
11cf8741 | 581 | \f |
5a2468f5 JM |
582 | /* Generic configuration support for packets the stub optionally |
583 | supports. Allows the user to specify the use of the packet as well | |
584 | as allowing GDB to auto-detect support in the remote stub. */ | |
585 | ||
586 | enum packet_support | |
587 | { | |
588 | PACKET_SUPPORT_UNKNOWN = 0, | |
589 | PACKET_ENABLE, | |
590 | PACKET_DISABLE | |
591 | }; | |
592 | ||
5a2468f5 JM |
593 | struct packet_config |
594 | { | |
5a2468f5 JM |
595 | char *name; |
596 | char *title; | |
7f19b9a2 | 597 | enum auto_boolean detect; |
5a2468f5 JM |
598 | enum packet_support support; |
599 | }; | |
600 | ||
d471ea57 AC |
601 | /* Analyze a packet's return value and update the packet config |
602 | accordingly. */ | |
603 | ||
604 | enum packet_result | |
605 | { | |
606 | PACKET_ERROR, | |
607 | PACKET_OK, | |
608 | PACKET_UNKNOWN | |
609 | }; | |
610 | ||
5a2468f5 | 611 | static void |
d471ea57 | 612 | update_packet_config (struct packet_config *config) |
5a2468f5 | 613 | { |
d471ea57 AC |
614 | switch (config->detect) |
615 | { | |
7f19b9a2 | 616 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
617 | config->support = PACKET_ENABLE; |
618 | break; | |
7f19b9a2 | 619 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
620 | config->support = PACKET_DISABLE; |
621 | break; | |
7f19b9a2 | 622 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
623 | config->support = PACKET_SUPPORT_UNKNOWN; |
624 | break; | |
625 | } | |
5a2468f5 JM |
626 | } |
627 | ||
628 | static void | |
fba45db2 | 629 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
630 | { |
631 | char *support = "internal-error"; | |
632 | switch (config->support) | |
633 | { | |
634 | case PACKET_ENABLE: | |
635 | support = "enabled"; | |
636 | break; | |
637 | case PACKET_DISABLE: | |
638 | support = "disabled"; | |
639 | break; | |
640 | case PACKET_SUPPORT_UNKNOWN: | |
641 | support = "unknown"; | |
642 | break; | |
643 | } | |
644 | switch (config->detect) | |
645 | { | |
7f19b9a2 | 646 | case AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
647 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
648 | config->name, config->title, support); | |
649 | break; | |
7f19b9a2 AC |
650 | case AUTO_BOOLEAN_TRUE: |
651 | case AUTO_BOOLEAN_FALSE: | |
8e248173 | 652 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", |
5a2468f5 | 653 | config->name, config->title, support); |
8e248173 | 654 | break; |
5a2468f5 JM |
655 | } |
656 | } | |
657 | ||
658 | static void | |
d471ea57 AC |
659 | add_packet_config_cmd (struct packet_config *config, |
660 | char *name, | |
661 | char *title, | |
e9e68a56 AC |
662 | cmd_sfunc_ftype *set_func, |
663 | cmd_sfunc_ftype *show_func, | |
d471ea57 AC |
664 | struct cmd_list_element **set_remote_list, |
665 | struct cmd_list_element **show_remote_list, | |
666 | int legacy) | |
667 | { | |
668 | struct cmd_list_element *set_cmd; | |
669 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
670 | char *set_doc; |
671 | char *show_doc; | |
d471ea57 | 672 | char *cmd_name; |
5a2468f5 JM |
673 | config->name = name; |
674 | config->title = title; | |
7f19b9a2 | 675 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 676 | config->support = PACKET_SUPPORT_UNKNOWN; |
76995688 AC |
677 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
678 | name, title); | |
679 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
680 | name, title); | |
d471ea57 | 681 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 682 | xasprintf (&cmd_name, "%s-packet", title); |
e9e68a56 AC |
683 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
684 | &config->detect, set_doc, show_doc, | |
685 | set_func, show_func, | |
686 | set_remote_list, show_remote_list); | |
d471ea57 AC |
687 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ |
688 | if (legacy) | |
689 | { | |
690 | char *legacy_name; | |
76995688 | 691 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
692 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
693 | set_remote_list); | |
694 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
695 | show_remote_list); | |
696 | } | |
5a2468f5 JM |
697 | } |
698 | ||
d471ea57 AC |
699 | static enum packet_result |
700 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 701 | { |
d471ea57 | 702 | if (buf[0] != '\0') |
5a2468f5 | 703 | { |
d471ea57 AC |
704 | /* The stub recognized the packet request. Check that the |
705 | operation succeeded. */ | |
706 | switch (config->support) | |
707 | { | |
708 | case PACKET_SUPPORT_UNKNOWN: | |
709 | if (remote_debug) | |
710 | fprintf_unfiltered (gdb_stdlog, | |
711 | "Packet %s (%s) is supported\n", | |
712 | config->name, config->title); | |
713 | config->support = PACKET_ENABLE; | |
714 | break; | |
715 | case PACKET_DISABLE: | |
8e65ff28 AC |
716 | internal_error (__FILE__, __LINE__, |
717 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
718 | break; |
719 | case PACKET_ENABLE: | |
720 | break; | |
721 | } | |
722 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
723 | /* "OK" - definitly OK. */ | |
724 | return PACKET_OK; | |
725 | if (buf[0] == 'E' | |
726 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
727 | && buf[3] == '\0') | |
728 | /* "Enn" - definitly an error. */ | |
729 | return PACKET_ERROR; | |
730 | /* The packet may or may not be OK. Just assume it is */ | |
731 | return PACKET_OK; | |
732 | } | |
733 | else | |
734 | { | |
735 | /* The stub does not support the packet. */ | |
736 | switch (config->support) | |
737 | { | |
738 | case PACKET_ENABLE: | |
7f19b9a2 | 739 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 AC |
740 | /* If the stub previously indicated that the packet was |
741 | supported then there is a protocol error.. */ | |
742 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
743 | config->name, config->title); | |
744 | else | |
745 | /* The user set it wrong. */ | |
746 | error ("Enabled packet %s (%s) not recognized by stub", | |
747 | config->name, config->title); | |
748 | break; | |
749 | case PACKET_SUPPORT_UNKNOWN: | |
750 | if (remote_debug) | |
751 | fprintf_unfiltered (gdb_stdlog, | |
752 | "Packet %s (%s) is NOT supported\n", | |
753 | config->name, config->title); | |
754 | config->support = PACKET_DISABLE; | |
755 | break; | |
756 | case PACKET_DISABLE: | |
757 | break; | |
758 | } | |
759 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
760 | } |
761 | } | |
762 | ||
dc8acb97 MS |
763 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
764 | static struct packet_config remote_protocol_qSymbol; | |
765 | ||
766 | static void | |
767 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
768 | struct cmd_list_element *c) | |
769 | { | |
770 | update_packet_config (&remote_protocol_qSymbol); | |
771 | } | |
772 | ||
773 | static void | |
e9e68a56 AC |
774 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, |
775 | struct cmd_list_element *c) | |
dc8acb97 MS |
776 | { |
777 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
778 | } | |
779 | ||
44eaed12 C |
780 | /* Should we try the 'e' (step over range) request? */ |
781 | static struct packet_config remote_protocol_e; | |
782 | ||
783 | static void | |
784 | set_remote_protocol_e_packet_cmd (char *args, int from_tty, | |
785 | struct cmd_list_element *c) | |
786 | { | |
787 | update_packet_config (&remote_protocol_e); | |
788 | } | |
789 | ||
790 | static void | |
e9e68a56 AC |
791 | show_remote_protocol_e_packet_cmd (char *args, int from_tty, |
792 | struct cmd_list_element *c) | |
44eaed12 C |
793 | { |
794 | show_packet_config_cmd (&remote_protocol_e); | |
795 | } | |
796 | ||
797 | ||
798 | /* Should we try the 'E' (step over range / w signal #) request? */ | |
799 | static struct packet_config remote_protocol_E; | |
800 | ||
801 | static void | |
802 | set_remote_protocol_E_packet_cmd (char *args, int from_tty, | |
803 | struct cmd_list_element *c) | |
804 | { | |
805 | update_packet_config (&remote_protocol_E); | |
806 | } | |
807 | ||
808 | static void | |
e9e68a56 AC |
809 | show_remote_protocol_E_packet_cmd (char *args, int from_tty, |
810 | struct cmd_list_element *c) | |
44eaed12 C |
811 | { |
812 | show_packet_config_cmd (&remote_protocol_E); | |
813 | } | |
814 | ||
815 | ||
5a2468f5 JM |
816 | /* Should we try the 'P' (set register) request? */ |
817 | ||
818 | static struct packet_config remote_protocol_P; | |
819 | ||
820 | static void | |
fba45db2 KB |
821 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
822 | struct cmd_list_element *c) | |
5a2468f5 | 823 | { |
d471ea57 | 824 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
825 | } |
826 | ||
827 | static void | |
e9e68a56 AC |
828 | show_remote_protocol_P_packet_cmd (char *args, int from_tty, |
829 | struct cmd_list_element *c) | |
5a2468f5 JM |
830 | { |
831 | show_packet_config_cmd (&remote_protocol_P); | |
832 | } | |
833 | ||
d471ea57 AC |
834 | /* Should we try one of the 'Z' requests? */ |
835 | ||
836 | enum Z_packet_type | |
837 | { | |
838 | Z_PACKET_SOFTWARE_BP, | |
839 | Z_PACKET_HARDWARE_BP, | |
840 | Z_PACKET_WRITE_WP, | |
841 | Z_PACKET_READ_WP, | |
842 | Z_PACKET_ACCESS_WP, | |
843 | NR_Z_PACKET_TYPES | |
844 | }; | |
96baa820 | 845 | |
d471ea57 AC |
846 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
847 | ||
848 | /* FIXME: Instead of having all these boiler plate functions, the | |
849 | command callback should include a context argument. */ | |
850 | ||
851 | static void | |
852 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
853 | struct cmd_list_element *c) | |
854 | { | |
855 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
856 | } | |
857 | ||
858 | static void | |
e9e68a56 AC |
859 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, |
860 | struct cmd_list_element *c) | |
d471ea57 AC |
861 | { |
862 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
863 | } | |
864 | ||
865 | static void | |
866 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
867 | struct cmd_list_element *c) | |
868 | { | |
869 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
870 | } | |
871 | ||
872 | static void | |
e9e68a56 AC |
873 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, |
874 | struct cmd_list_element *c) | |
d471ea57 AC |
875 | { |
876 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
877 | } | |
878 | ||
879 | static void | |
880 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
881 | struct cmd_list_element *c) | |
882 | { | |
883 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
884 | } | |
885 | ||
886 | static void | |
e9e68a56 AC |
887 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, |
888 | struct cmd_list_element *c) | |
d471ea57 AC |
889 | { |
890 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
891 | } | |
892 | ||
893 | static void | |
894 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
895 | struct cmd_list_element *c) | |
896 | { | |
897 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
898 | } | |
899 | ||
900 | static void | |
e9e68a56 AC |
901 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, |
902 | struct cmd_list_element *c) | |
d471ea57 AC |
903 | { |
904 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
905 | } | |
906 | ||
907 | static void | |
908 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
909 | struct cmd_list_element *c) | |
910 | { | |
911 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
912 | } | |
913 | ||
914 | static void | |
e9e68a56 AC |
915 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, |
916 | struct cmd_list_element *c) | |
d471ea57 AC |
917 | { |
918 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
919 | } | |
920 | ||
921 | /* For compatibility with older distributions. Provide a ``set remote | |
922 | Z-packet ...'' command that updates all the Z packet types. */ | |
923 | ||
7f19b9a2 | 924 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
925 | |
926 | static void | |
fba45db2 KB |
927 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
928 | struct cmd_list_element *c) | |
96baa820 | 929 | { |
d471ea57 AC |
930 | int i; |
931 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
932 | { | |
933 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
934 | update_packet_config (&remote_protocol_Z[i]); | |
935 | } | |
96baa820 JM |
936 | } |
937 | ||
938 | static void | |
e9e68a56 AC |
939 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
940 | struct cmd_list_element *c) | |
96baa820 | 941 | { |
d471ea57 AC |
942 | int i; |
943 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
944 | { | |
945 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
946 | } | |
96baa820 JM |
947 | } |
948 | ||
949 | /* Should we try the 'X' (remote binary download) packet? | |
950 | ||
951 | This variable (available to the user via "set remote X-packet") | |
952 | dictates whether downloads are sent in binary (via the 'X' packet). | |
953 | We assume that the stub can, and attempt to do it. This will be | |
954 | cleared if the stub does not understand it. This switch is still | |
955 | needed, though in cases when the packet is supported in the stub, | |
956 | but the connection does not allow it (i.e., 7-bit serial connection | |
957 | only). */ | |
958 | ||
959 | static struct packet_config remote_protocol_binary_download; | |
960 | ||
9d1f7ab2 MS |
961 | /* Should we try the 'ThreadInfo' query packet? |
962 | ||
963 | This variable (NOT available to the user: auto-detect only!) | |
964 | determines whether GDB will use the new, simpler "ThreadInfo" | |
965 | query or the older, more complex syntax for thread queries. | |
966 | This is an auto-detect variable (set to true at each connect, | |
967 | and set to false when the target fails to recognize it). */ | |
968 | ||
969 | static int use_threadinfo_query; | |
970 | static int use_threadextra_query; | |
971 | ||
96baa820 JM |
972 | static void |
973 | set_remote_protocol_binary_download_cmd (char *args, | |
974 | int from_tty, | |
975 | struct cmd_list_element *c) | |
976 | { | |
d471ea57 | 977 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
978 | } |
979 | ||
980 | static void | |
e9e68a56 AC |
981 | show_remote_protocol_binary_download_cmd (char *args, int from_tty, |
982 | struct cmd_list_element *c) | |
96baa820 JM |
983 | { |
984 | show_packet_config_cmd (&remote_protocol_binary_download); | |
985 | } | |
986 | ||
c906108c | 987 | |
43ff13b4 | 988 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
ae44c0c4 AC |
989 | static void *sigint_remote_twice_token; |
990 | static void *sigint_remote_token; | |
43ff13b4 | 991 | |
c906108c SS |
992 | /* These are pointers to hook functions that may be set in order to |
993 | modify resume/wait behavior for a particular architecture. */ | |
994 | ||
507f3c78 KB |
995 | void (*target_resume_hook) (void); |
996 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
997 | \f |
998 | ||
c5aa993b | 999 | |
c906108c SS |
1000 | /* These are the threads which we last sent to the remote system. |
1001 | -1 for all or -2 for not sent yet. */ | |
1002 | static int general_thread; | |
cce74817 | 1003 | static int continue_thread; |
c906108c SS |
1004 | |
1005 | /* Call this function as a result of | |
1006 | 1) A halt indication (T packet) containing a thread id | |
1007 | 2) A direct query of currthread | |
1008 | 3) Successful execution of set thread | |
1009 | */ | |
1010 | ||
1011 | static void | |
fba45db2 | 1012 | record_currthread (int currthread) |
c906108c | 1013 | { |
c906108c | 1014 | general_thread = currthread; |
cce74817 | 1015 | |
c906108c SS |
1016 | /* If this is a new thread, add it to GDB's thread list. |
1017 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1018 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1019 | { |
39f77062 | 1020 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1021 | ui_out_text (uiout, "[New "); |
39f77062 | 1022 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1023 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1024 | } |
c906108c SS |
1025 | } |
1026 | ||
1027 | #define MAGIC_NULL_PID 42000 | |
1028 | ||
1029 | static void | |
fba45db2 | 1030 | set_thread (int th, int gen) |
c906108c | 1031 | { |
d01949b6 AC |
1032 | struct remote_state *rs = get_remote_state (); |
1033 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1034 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1035 | |
1036 | if (state == th) | |
1037 | return; | |
1038 | ||
1039 | buf[0] = 'H'; | |
1040 | buf[1] = gen ? 'g' : 'c'; | |
1041 | if (th == MAGIC_NULL_PID) | |
1042 | { | |
1043 | buf[2] = '0'; | |
1044 | buf[3] = '\0'; | |
1045 | } | |
1046 | else if (th < 0) | |
1047 | sprintf (&buf[2], "-%x", -th); | |
1048 | else | |
1049 | sprintf (&buf[2], "%x", th); | |
1050 | putpkt (buf); | |
d01949b6 | 1051 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1052 | if (gen) |
c5aa993b | 1053 | general_thread = th; |
c906108c | 1054 | else |
cce74817 | 1055 | continue_thread = th; |
c906108c SS |
1056 | } |
1057 | \f | |
1058 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1059 | ||
1060 | static int | |
39f77062 | 1061 | remote_thread_alive (ptid_t ptid) |
c906108c | 1062 | { |
39f77062 | 1063 | int tid = PIDGET (ptid); |
cce74817 | 1064 | char buf[16]; |
c906108c | 1065 | |
cce74817 JM |
1066 | if (tid < 0) |
1067 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1068 | else |
cce74817 | 1069 | sprintf (buf, "T%08x", tid); |
c906108c | 1070 | putpkt (buf); |
c2d11a7d | 1071 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1072 | return (buf[0] == 'O' && buf[1] == 'K'); |
1073 | } | |
1074 | ||
1075 | /* About these extended threadlist and threadinfo packets. They are | |
1076 | variable length packets but, the fields within them are often fixed | |
1077 | length. They are redundent enough to send over UDP as is the | |
1078 | remote protocol in general. There is a matching unit test module | |
1079 | in libstub. */ | |
1080 | ||
cce74817 JM |
1081 | #define OPAQUETHREADBYTES 8 |
1082 | ||
1083 | /* a 64 bit opaque identifier */ | |
1084 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1085 | ||
1086 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1087 | protocol encoding, and remote.c. it is not particularly changable */ | |
1088 | ||
1089 | /* Right now, the internal structure is int. We want it to be bigger. | |
1090 | Plan to fix this. | |
c5aa993b | 1091 | */ |
cce74817 | 1092 | |
c5aa993b | 1093 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1094 | |
9d1f7ab2 | 1095 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1096 | equivalint to the reply of the remote threadinfo packet */ |
1097 | ||
1098 | struct gdb_ext_thread_info | |
c5aa993b JM |
1099 | { |
1100 | threadref threadid; /* External form of thread reference */ | |
1101 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1102 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1103 | char shortname[32]; /* To be used to name threads */ | |
1104 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1105 | }; | |
cce74817 JM |
1106 | |
1107 | /* The volume of remote transfers can be limited by submitting | |
1108 | a mask containing bits specifying the desired information. | |
1109 | Use a union of these values as the 'selection' parameter to | |
1110 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1111 | */ |
cce74817 JM |
1112 | |
1113 | #define TAG_THREADID 1 | |
1114 | #define TAG_EXISTS 2 | |
1115 | #define TAG_DISPLAY 4 | |
1116 | #define TAG_THREADNAME 8 | |
c5aa993b | 1117 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1118 | |
c906108c SS |
1119 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1120 | ||
b2dd6311 | 1121 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1122 | |
a14ed312 | 1123 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1124 | |
a14ed312 | 1125 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1126 | |
a14ed312 | 1127 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1128 | |
a14ed312 | 1129 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1130 | |
a14ed312 | 1131 | static char *pack_int (char *buf, int value); |
cce74817 | 1132 | |
a14ed312 | 1133 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1134 | |
a14ed312 | 1135 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1136 | |
a14ed312 | 1137 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1138 | |
a14ed312 | 1139 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1140 | |
a14ed312 | 1141 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1142 | |
a14ed312 | 1143 | static int threadref_to_int (threadref * ref); |
cce74817 | 1144 | |
a14ed312 | 1145 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1146 | |
a14ed312 | 1147 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1148 | |
a14ed312 | 1149 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1150 | |
a14ed312 KB |
1151 | static int remote_unpack_thread_info_response (char *pkt, |
1152 | threadref * expectedref, | |
1153 | struct gdb_ext_thread_info | |
1154 | *info); | |
cce74817 JM |
1155 | |
1156 | ||
a14ed312 KB |
1157 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1158 | struct gdb_ext_thread_info *info); | |
cce74817 | 1159 | |
a14ed312 KB |
1160 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1161 | int selection, | |
1162 | struct gdb_ext_thread_info *info); | |
cce74817 | 1163 | |
a14ed312 KB |
1164 | static char *pack_threadlist_request (char *pkt, int startflag, |
1165 | int threadcount, | |
1166 | threadref * nextthread); | |
cce74817 | 1167 | |
a14ed312 KB |
1168 | static int parse_threadlist_response (char *pkt, |
1169 | int result_limit, | |
1170 | threadref * original_echo, | |
1171 | threadref * resultlist, int *doneflag); | |
cce74817 | 1172 | |
a14ed312 KB |
1173 | static int remote_get_threadlist (int startflag, |
1174 | threadref * nextthread, | |
1175 | int result_limit, | |
1176 | int *done, | |
1177 | int *result_count, threadref * threadlist); | |
cce74817 | 1178 | |
c5aa993b | 1179 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1180 | |
a14ed312 KB |
1181 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1182 | void *context, int looplimit); | |
cce74817 | 1183 | |
a14ed312 | 1184 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1185 | |
c906108c SS |
1186 | /* encode 64 bits in 16 chars of hex */ |
1187 | ||
1188 | static const char hexchars[] = "0123456789abcdef"; | |
1189 | ||
1190 | static int | |
fba45db2 | 1191 | ishex (int ch, int *val) |
c906108c SS |
1192 | { |
1193 | if ((ch >= 'a') && (ch <= 'f')) | |
1194 | { | |
1195 | *val = ch - 'a' + 10; | |
1196 | return 1; | |
1197 | } | |
1198 | if ((ch >= 'A') && (ch <= 'F')) | |
1199 | { | |
1200 | *val = ch - 'A' + 10; | |
1201 | return 1; | |
1202 | } | |
1203 | if ((ch >= '0') && (ch <= '9')) | |
1204 | { | |
1205 | *val = ch - '0'; | |
1206 | return 1; | |
1207 | } | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | static int | |
fba45db2 | 1212 | stubhex (int ch) |
c906108c SS |
1213 | { |
1214 | if (ch >= 'a' && ch <= 'f') | |
1215 | return ch - 'a' + 10; | |
1216 | if (ch >= '0' && ch <= '9') | |
1217 | return ch - '0'; | |
1218 | if (ch >= 'A' && ch <= 'F') | |
1219 | return ch - 'A' + 10; | |
1220 | return -1; | |
1221 | } | |
1222 | ||
1223 | static int | |
fba45db2 | 1224 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1225 | { |
1226 | int nibble; | |
1227 | int retval = 0; | |
1228 | ||
1229 | while (fieldlength) | |
1230 | { | |
1231 | nibble = stubhex (*buff++); | |
1232 | retval |= nibble; | |
1233 | fieldlength--; | |
1234 | if (fieldlength) | |
1235 | retval = retval << 4; | |
1236 | } | |
1237 | return retval; | |
1238 | } | |
1239 | ||
1240 | char * | |
fba45db2 | 1241 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1242 | ULONGEST *result) |
c906108c SS |
1243 | { |
1244 | int nibble; | |
1245 | int retval = 0; | |
1246 | ||
1247 | while (ishex (*buff, &nibble)) | |
1248 | { | |
1249 | buff++; | |
1250 | retval = retval << 4; | |
1251 | retval |= nibble & 0x0f; | |
1252 | } | |
1253 | *result = retval; | |
1254 | return buff; | |
1255 | } | |
1256 | ||
1257 | static char * | |
fba45db2 | 1258 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1259 | { |
1260 | ishex (*buf++, val); | |
1261 | return buf; | |
1262 | } | |
1263 | ||
1264 | static char * | |
fba45db2 | 1265 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1266 | { |
1267 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1268 | return buf; | |
1269 | } | |
1270 | ||
1271 | static char * | |
fba45db2 | 1272 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1273 | { |
1274 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1275 | *pkt++ = hexchars[(byte & 0xf)]; | |
1276 | return pkt; | |
1277 | } | |
1278 | ||
1279 | static char * | |
fba45db2 | 1280 | unpack_byte (char *buf, int *value) |
c906108c SS |
1281 | { |
1282 | *value = stub_unpack_int (buf, 2); | |
1283 | return buf + 2; | |
1284 | } | |
1285 | ||
1286 | static char * | |
fba45db2 | 1287 | pack_int (char *buf, int value) |
c906108c SS |
1288 | { |
1289 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1290 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1291 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1292 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1293 | return buf; | |
1294 | } | |
1295 | ||
1296 | static char * | |
fba45db2 | 1297 | unpack_int (char *buf, int *value) |
c906108c SS |
1298 | { |
1299 | *value = stub_unpack_int (buf, 8); | |
1300 | return buf + 8; | |
1301 | } | |
1302 | ||
c5aa993b | 1303 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1304 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1305 | |
1306 | static char * | |
fba45db2 | 1307 | pack_string (char *pkt, char *string) |
c906108c SS |
1308 | { |
1309 | char ch; | |
1310 | int len; | |
1311 | ||
1312 | len = strlen (string); | |
1313 | if (len > 200) | |
1314 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1315 | pkt = pack_hex_byte (pkt, len); | |
1316 | while (len-- > 0) | |
1317 | { | |
1318 | ch = *string++; | |
1319 | if ((ch == '\0') || (ch == '#')) | |
1320 | ch = '*'; /* Protect encapsulation */ | |
1321 | *pkt++ = ch; | |
1322 | } | |
1323 | return pkt; | |
1324 | } | |
1325 | #endif /* 0 (unused) */ | |
1326 | ||
1327 | static char * | |
fba45db2 | 1328 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1329 | { |
1330 | while (length--) | |
1331 | *dest++ = *src++; | |
1332 | *dest = '\0'; | |
1333 | return src; | |
1334 | } | |
1335 | ||
1336 | static char * | |
fba45db2 | 1337 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1338 | { |
1339 | char *limit; | |
1340 | unsigned char *altid; | |
1341 | ||
1342 | altid = (unsigned char *) id; | |
1343 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1344 | while (pkt < limit) | |
1345 | pkt = pack_hex_byte (pkt, *altid++); | |
1346 | return pkt; | |
1347 | } | |
1348 | ||
1349 | ||
1350 | static char * | |
fba45db2 | 1351 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1352 | { |
1353 | char *altref; | |
1354 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1355 | int x, y; | |
1356 | ||
1357 | altref = (char *) id; | |
1358 | ||
1359 | while (inbuf < limit) | |
1360 | { | |
1361 | x = stubhex (*inbuf++); | |
1362 | y = stubhex (*inbuf++); | |
1363 | *altref++ = (x << 4) | y; | |
1364 | } | |
1365 | return inbuf; | |
1366 | } | |
1367 | ||
1368 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1369 | ints. This is due to a mismatch of specifications. We would like | |
1370 | to use 64bit thread references internally. This is an adapter | |
1371 | function. */ | |
1372 | ||
1373 | void | |
fba45db2 | 1374 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1375 | { |
1376 | unsigned char *scan; | |
1377 | ||
1378 | scan = (unsigned char *) id; | |
1379 | { | |
1380 | int i = 4; | |
1381 | while (i--) | |
1382 | *scan++ = 0; | |
1383 | } | |
1384 | *scan++ = (value >> 24) & 0xff; | |
1385 | *scan++ = (value >> 16) & 0xff; | |
1386 | *scan++ = (value >> 8) & 0xff; | |
1387 | *scan++ = (value & 0xff); | |
1388 | } | |
1389 | ||
1390 | static int | |
fba45db2 | 1391 | threadref_to_int (threadref *ref) |
c906108c SS |
1392 | { |
1393 | int i, value = 0; | |
1394 | unsigned char *scan; | |
1395 | ||
1396 | scan = (char *) ref; | |
1397 | scan += 4; | |
1398 | i = 4; | |
1399 | while (i-- > 0) | |
1400 | value = (value << 8) | ((*scan++) & 0xff); | |
1401 | return value; | |
1402 | } | |
1403 | ||
1404 | static void | |
fba45db2 | 1405 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1406 | { |
1407 | int i; | |
1408 | unsigned char *csrc, *cdest; | |
1409 | ||
1410 | csrc = (unsigned char *) src; | |
1411 | cdest = (unsigned char *) dest; | |
1412 | i = 8; | |
1413 | while (i--) | |
1414 | *cdest++ = *csrc++; | |
1415 | } | |
1416 | ||
1417 | static int | |
fba45db2 | 1418 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1419 | { |
1420 | /* things are broken right now, so just assume we got a match */ | |
1421 | #if 0 | |
1422 | unsigned char *srcp, *destp; | |
1423 | int i, result; | |
1424 | srcp = (char *) src; | |
1425 | destp = (char *) dest; | |
1426 | ||
1427 | result = 1; | |
1428 | while (i-- > 0) | |
1429 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1430 | return result; | |
1431 | #endif | |
1432 | return 1; | |
1433 | } | |
1434 | ||
1435 | /* | |
c5aa993b JM |
1436 | threadid:1, # always request threadid |
1437 | context_exists:2, | |
1438 | display:4, | |
1439 | unique_name:8, | |
1440 | more_display:16 | |
1441 | */ | |
c906108c SS |
1442 | |
1443 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1444 | ||
1445 | static char * | |
fba45db2 | 1446 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1447 | { |
1448 | *pkt++ = 'q'; /* Info Query */ | |
1449 | *pkt++ = 'P'; /* process or thread info */ | |
1450 | pkt = pack_int (pkt, mode); /* mode */ | |
1451 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1452 | *pkt = '\0'; /* terminate */ | |
1453 | return pkt; | |
1454 | } | |
1455 | ||
1456 | /* These values tag the fields in a thread info response packet */ | |
1457 | /* Tagging the fields allows us to request specific fields and to | |
1458 | add more fields as time goes by */ | |
1459 | ||
c5aa993b JM |
1460 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1461 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1462 | fetch registers and its stack */ | |
1463 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1464 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1465 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1466 | the process */ | |
c906108c SS |
1467 | |
1468 | static int | |
fba45db2 KB |
1469 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1470 | struct gdb_ext_thread_info *info) | |
c906108c | 1471 | { |
d01949b6 | 1472 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1473 | int mask, length; |
1474 | unsigned int tag; | |
1475 | threadref ref; | |
d01949b6 | 1476 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1477 | int retval = 1; |
1478 | ||
1479 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1480 | info->active = 0; | |
1481 | info->display[0] = '\0'; | |
1482 | info->shortname[0] = '\0'; | |
1483 | info->more_display[0] = '\0'; | |
1484 | ||
1485 | /* Assume the characters indicating the packet type have been stripped */ | |
1486 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1487 | pkt = unpack_threadid (pkt, &ref); | |
1488 | ||
1489 | if (mask == 0) | |
1490 | warning ("Incomplete response to threadinfo request\n"); | |
1491 | if (!threadmatch (&ref, expectedref)) | |
1492 | { /* This is an answer to a different request */ | |
1493 | warning ("ERROR RMT Thread info mismatch\n"); | |
1494 | return 0; | |
1495 | } | |
1496 | copy_threadref (&info->threadid, &ref); | |
1497 | ||
1498 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1499 | ||
c5aa993b | 1500 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1501 | { |
1502 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1503 | pkt = unpack_byte (pkt, &length); /* length */ | |
1504 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1505 | { | |
1506 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1507 | retval = 0; | |
1508 | break; | |
1509 | } | |
1510 | if (tag == TAG_THREADID) | |
1511 | { | |
1512 | if (length != 16) | |
1513 | { | |
1514 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1515 | retval = 0; | |
1516 | break; | |
1517 | } | |
1518 | pkt = unpack_threadid (pkt, &ref); | |
1519 | mask = mask & ~TAG_THREADID; | |
1520 | continue; | |
1521 | } | |
1522 | if (tag == TAG_EXISTS) | |
1523 | { | |
1524 | info->active = stub_unpack_int (pkt, length); | |
1525 | pkt += length; | |
1526 | mask = mask & ~(TAG_EXISTS); | |
1527 | if (length > 8) | |
1528 | { | |
1529 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1530 | retval = 0; | |
1531 | break; | |
1532 | } | |
1533 | continue; | |
1534 | } | |
1535 | if (tag == TAG_THREADNAME) | |
1536 | { | |
1537 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1538 | mask = mask & ~TAG_THREADNAME; | |
1539 | continue; | |
1540 | } | |
1541 | if (tag == TAG_DISPLAY) | |
1542 | { | |
1543 | pkt = unpack_string (pkt, &info->display[0], length); | |
1544 | mask = mask & ~TAG_DISPLAY; | |
1545 | continue; | |
1546 | } | |
1547 | if (tag == TAG_MOREDISPLAY) | |
1548 | { | |
1549 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1550 | mask = mask & ~TAG_MOREDISPLAY; | |
1551 | continue; | |
1552 | } | |
1553 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1554 | break; /* Not a tag we know about */ | |
1555 | } | |
1556 | return retval; | |
1557 | } | |
1558 | ||
1559 | static int | |
fba45db2 KB |
1560 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1561 | struct gdb_ext_thread_info *info) | |
c906108c | 1562 | { |
d01949b6 | 1563 | struct remote_state *rs = get_remote_state (); |
c906108c | 1564 | int result; |
d01949b6 | 1565 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1566 | |
1567 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1568 | putpkt (threadinfo_pkt); | |
d01949b6 | 1569 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1570 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1571 | info); | |
1572 | return result; | |
1573 | } | |
1574 | ||
1575 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1576 | representation of a threadid. */ | |
1577 | ||
1578 | static int | |
fba45db2 KB |
1579 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1580 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1581 | { |
1582 | threadref lclref; | |
1583 | ||
1584 | int_to_threadref (&lclref, *ref); | |
1585 | return remote_get_threadinfo (&lclref, selection, info); | |
1586 | } | |
1587 | ||
1588 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1589 | ||
1590 | static char * | |
fba45db2 KB |
1591 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1592 | threadref *nextthread) | |
c906108c SS |
1593 | { |
1594 | *pkt++ = 'q'; /* info query packet */ | |
1595 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1596 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1597 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1598 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1599 | *pkt = '\0'; | |
1600 | return pkt; | |
1601 | } | |
1602 | ||
1603 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1604 | ||
1605 | static int | |
fba45db2 KB |
1606 | parse_threadlist_response (char *pkt, int result_limit, |
1607 | threadref *original_echo, threadref *resultlist, | |
1608 | int *doneflag) | |
c906108c | 1609 | { |
d01949b6 | 1610 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1611 | char *limit; |
1612 | int count, resultcount, done; | |
1613 | ||
1614 | resultcount = 0; | |
1615 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1616 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1617 | pkt = unpack_byte (pkt, &count); /* count field */ |
1618 | pkt = unpack_nibble (pkt, &done); | |
1619 | /* The first threadid is the argument threadid. */ | |
1620 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1621 | while ((count-- > 0) && (pkt < limit)) | |
1622 | { | |
1623 | pkt = unpack_threadid (pkt, resultlist++); | |
1624 | if (resultcount++ >= result_limit) | |
1625 | break; | |
1626 | } | |
1627 | if (doneflag) | |
1628 | *doneflag = done; | |
1629 | return resultcount; | |
1630 | } | |
1631 | ||
1632 | static int | |
fba45db2 KB |
1633 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1634 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1635 | { |
d01949b6 | 1636 | struct remote_state *rs = get_remote_state (); |
c906108c | 1637 | static threadref echo_nextthread; |
d01949b6 AC |
1638 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1639 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1640 | int result = 1; |
1641 | ||
1642 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1643 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1644 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1645 | |
1646 | pack_threadlist_request (threadlist_packet, | |
1647 | startflag, result_limit, nextthread); | |
1648 | putpkt (threadlist_packet); | |
d01949b6 | 1649 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1650 | |
1651 | *result_count = | |
1652 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1653 | threadlist, done); | |
1654 | ||
1655 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1656 | { | |
1657 | /* FIXME: This is a good reason to drop the packet */ | |
1658 | /* Possably, there is a duplicate response */ | |
1659 | /* Possabilities : | |
1660 | retransmit immediatly - race conditions | |
1661 | retransmit after timeout - yes | |
1662 | exit | |
1663 | wait for packet, then exit | |
1664 | */ | |
1665 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1666 | return 0; /* I choose simply exiting */ | |
1667 | } | |
1668 | if (*result_count <= 0) | |
1669 | { | |
1670 | if (*done != 1) | |
1671 | { | |
1672 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1673 | result = 0; | |
1674 | } | |
1675 | return result; /* break; */ | |
1676 | } | |
1677 | if (*result_count > result_limit) | |
1678 | { | |
1679 | *result_count = 0; | |
1680 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1681 | return 0; | |
1682 | } | |
1683 | return result; | |
1684 | } | |
1685 | ||
1686 | /* This is the interface between remote and threads, remotes upper interface */ | |
1687 | ||
1688 | /* remote_find_new_threads retrieves the thread list and for each | |
1689 | thread in the list, looks up the thread in GDB's internal list, | |
1690 | ading the thread if it does not already exist. This involves | |
1691 | getting partial thread lists from the remote target so, polling the | |
1692 | quit_flag is required. */ | |
1693 | ||
1694 | ||
1695 | /* About this many threadisds fit in a packet. */ | |
1696 | ||
1697 | #define MAXTHREADLISTRESULTS 32 | |
1698 | ||
1699 | static int | |
fba45db2 KB |
1700 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1701 | int looplimit) | |
c906108c SS |
1702 | { |
1703 | int done, i, result_count; | |
1704 | int startflag = 1; | |
1705 | int result = 1; | |
1706 | int loopcount = 0; | |
1707 | static threadref nextthread; | |
1708 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1709 | ||
1710 | done = 0; | |
1711 | while (!done) | |
1712 | { | |
1713 | if (loopcount++ > looplimit) | |
1714 | { | |
1715 | result = 0; | |
1716 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1717 | break; | |
1718 | } | |
1719 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1720 | &done, &result_count, resultthreadlist)) | |
1721 | { | |
1722 | result = 0; | |
1723 | break; | |
1724 | } | |
1725 | /* clear for later iterations */ | |
1726 | startflag = 0; | |
1727 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1728 | if (result_count >= 1) | |
1729 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1730 | i = 0; | |
1731 | while (result_count--) | |
1732 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1733 | break; | |
1734 | } | |
1735 | return result; | |
1736 | } | |
1737 | ||
1738 | static int | |
fba45db2 | 1739 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1740 | { |
39f77062 | 1741 | ptid_t ptid; |
c906108c | 1742 | |
39f77062 KB |
1743 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1744 | ||
1745 | if (!in_thread_list (ptid)) | |
1746 | add_thread (ptid); | |
c906108c SS |
1747 | return 1; /* continue iterator */ |
1748 | } | |
1749 | ||
1750 | #define CRAZY_MAX_THREADS 1000 | |
1751 | ||
39f77062 KB |
1752 | static ptid_t |
1753 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1754 | { |
d01949b6 AC |
1755 | struct remote_state *rs = get_remote_state (); |
1756 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1757 | |
1758 | putpkt ("qC"); | |
d01949b6 | 1759 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1760 | if (buf[0] == 'Q' && buf[1] == 'C') |
39f77062 | 1761 | return pid_to_ptid (strtol (&buf[2], NULL, 16)); |
c906108c SS |
1762 | else |
1763 | return oldpid; | |
1764 | } | |
1765 | ||
9d1f7ab2 MS |
1766 | /* Find new threads for info threads command. |
1767 | * Original version, using John Metzler's thread protocol. | |
1768 | */ | |
cce74817 JM |
1769 | |
1770 | static void | |
fba45db2 | 1771 | remote_find_new_threads (void) |
c906108c | 1772 | { |
c5aa993b JM |
1773 | remote_threadlist_iterator (remote_newthread_step, 0, |
1774 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1775 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1776 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1777 | } |
1778 | ||
9d1f7ab2 MS |
1779 | /* |
1780 | * Find all threads for info threads command. | |
1781 | * Uses new thread protocol contributed by Cisco. | |
1782 | * Falls back and attempts to use the older method (above) | |
1783 | * if the target doesn't respond to the new method. | |
1784 | */ | |
1785 | ||
0f71a2f6 JM |
1786 | static void |
1787 | remote_threads_info (void) | |
1788 | { | |
d01949b6 AC |
1789 | struct remote_state *rs = get_remote_state (); |
1790 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1791 | char *bufp; |
0f71a2f6 JM |
1792 | int tid; |
1793 | ||
1794 | if (remote_desc == 0) /* paranoia */ | |
1795 | error ("Command can only be used when connected to the remote target."); | |
1796 | ||
9d1f7ab2 MS |
1797 | if (use_threadinfo_query) |
1798 | { | |
1799 | putpkt ("qfThreadInfo"); | |
1800 | bufp = buf; | |
d01949b6 | 1801 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1802 | if (bufp[0] != '\0') /* q packet recognized */ |
1803 | { | |
1804 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1805 | { | |
1806 | do | |
1807 | { | |
1808 | tid = strtol (bufp, &bufp, 16); | |
39f77062 KB |
1809 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1810 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1811 | } |
1812 | while (*bufp++ == ','); /* comma-separated list */ | |
1813 | putpkt ("qsThreadInfo"); | |
1814 | bufp = buf; | |
d01949b6 | 1815 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1816 | } |
1817 | return; /* done */ | |
1818 | } | |
1819 | } | |
1820 | ||
1821 | /* Else fall back to old method based on jmetzler protocol. */ | |
1822 | use_threadinfo_query = 0; | |
1823 | remote_find_new_threads (); | |
1824 | return; | |
1825 | } | |
1826 | ||
1827 | /* | |
1828 | * Collect a descriptive string about the given thread. | |
1829 | * The target may say anything it wants to about the thread | |
1830 | * (typically info about its blocked / runnable state, name, etc.). | |
1831 | * This string will appear in the info threads display. | |
1832 | * | |
1833 | * Optional: targets are not required to implement this function. | |
1834 | */ | |
1835 | ||
1836 | static char * | |
1837 | remote_threads_extra_info (struct thread_info *tp) | |
1838 | { | |
d01949b6 | 1839 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1840 | int result; |
1841 | int set; | |
1842 | threadref id; | |
1843 | struct gdb_ext_thread_info threadinfo; | |
1844 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1845 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1846 | int n = 0; /* position in display_buf */ |
1847 | ||
1848 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1849 | internal_error (__FILE__, __LINE__, |
1850 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1851 | |
1852 | if (use_threadextra_query) | |
1853 | { | |
39f77062 | 1854 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1855 | putpkt (bufp); |
d01949b6 | 1856 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1857 | if (bufp[0] != 0) |
1858 | { | |
30559e10 MS |
1859 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1860 | result = hex2bin (bufp, display_buf, n); | |
1861 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1862 | return display_buf; |
1863 | } | |
0f71a2f6 | 1864 | } |
9d1f7ab2 MS |
1865 | |
1866 | /* If the above query fails, fall back to the old method. */ | |
1867 | use_threadextra_query = 0; | |
1868 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1869 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1870 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1871 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1872 | if (threadinfo.active) | |
0f71a2f6 | 1873 | { |
9d1f7ab2 MS |
1874 | if (*threadinfo.shortname) |
1875 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1876 | if (*threadinfo.display) | |
1877 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1878 | if (*threadinfo.more_display) | |
1879 | n += sprintf(&display_buf[n], " Priority: %s", | |
1880 | threadinfo.more_display); | |
1881 | ||
1882 | if (n > 0) | |
c5aa993b | 1883 | { |
9d1f7ab2 MS |
1884 | /* for purely cosmetic reasons, clear up trailing commas */ |
1885 | if (',' == display_buf[n-1]) | |
1886 | display_buf[n-1] = ' '; | |
1887 | return display_buf; | |
c5aa993b | 1888 | } |
0f71a2f6 | 1889 | } |
9d1f7ab2 | 1890 | return NULL; |
0f71a2f6 | 1891 | } |
9d1f7ab2 | 1892 | |
c906108c | 1893 | \f |
c5aa993b | 1894 | |
c906108c SS |
1895 | /* Restart the remote side; this is an extended protocol operation. */ |
1896 | ||
1897 | static void | |
fba45db2 | 1898 | extended_remote_restart (void) |
c906108c | 1899 | { |
d01949b6 AC |
1900 | struct remote_state *rs = get_remote_state (); |
1901 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1902 | |
1903 | /* Send the restart command; for reasons I don't understand the | |
1904 | remote side really expects a number after the "R". */ | |
1905 | buf[0] = 'R'; | |
1906 | sprintf (&buf[1], "%x", 0); | |
1907 | putpkt (buf); | |
1908 | ||
1909 | /* Now query for status so this looks just like we restarted | |
1910 | gdbserver from scratch. */ | |
1911 | putpkt ("?"); | |
d01949b6 | 1912 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1913 | } |
1914 | \f | |
1915 | /* Clean up connection to a remote debugger. */ | |
1916 | ||
1917 | /* ARGSUSED */ | |
1918 | static void | |
fba45db2 | 1919 | remote_close (int quitting) |
c906108c SS |
1920 | { |
1921 | if (remote_desc) | |
2cd58942 | 1922 | serial_close (remote_desc); |
c906108c SS |
1923 | remote_desc = NULL; |
1924 | } | |
1925 | ||
1926 | /* Query the remote side for the text, data and bss offsets. */ | |
1927 | ||
1928 | static void | |
fba45db2 | 1929 | get_offsets (void) |
c906108c | 1930 | { |
d01949b6 AC |
1931 | struct remote_state *rs = get_remote_state (); |
1932 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1933 | char *ptr; |
c906108c SS |
1934 | int lose; |
1935 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1936 | struct section_offsets *offs; | |
1937 | ||
1938 | putpkt ("qOffsets"); | |
1939 | ||
d01949b6 | 1940 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1941 | |
1942 | if (buf[0] == '\000') | |
1943 | return; /* Return silently. Stub doesn't support | |
1944 | this command. */ | |
1945 | if (buf[0] == 'E') | |
1946 | { | |
1947 | warning ("Remote failure reply: %s", buf); | |
1948 | return; | |
1949 | } | |
1950 | ||
1951 | /* Pick up each field in turn. This used to be done with scanf, but | |
1952 | scanf will make trouble if CORE_ADDR size doesn't match | |
1953 | conversion directives correctly. The following code will work | |
1954 | with any size of CORE_ADDR. */ | |
1955 | text_addr = data_addr = bss_addr = 0; | |
1956 | ptr = buf; | |
1957 | lose = 0; | |
1958 | ||
1959 | if (strncmp (ptr, "Text=", 5) == 0) | |
1960 | { | |
1961 | ptr += 5; | |
1962 | /* Don't use strtol, could lose on big values. */ | |
1963 | while (*ptr && *ptr != ';') | |
1964 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1965 | } | |
1966 | else | |
1967 | lose = 1; | |
1968 | ||
1969 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1970 | { | |
1971 | ptr += 6; | |
1972 | while (*ptr && *ptr != ';') | |
1973 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1974 | } | |
1975 | else | |
1976 | lose = 1; | |
1977 | ||
1978 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1979 | { | |
1980 | ptr += 5; | |
1981 | while (*ptr && *ptr != ';') | |
1982 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1983 | } | |
1984 | else | |
1985 | lose = 1; | |
1986 | ||
1987 | if (lose) | |
1988 | error ("Malformed response to offset query, %s", buf); | |
1989 | ||
1990 | if (symfile_objfile == NULL) | |
1991 | return; | |
1992 | ||
d4f3574e SS |
1993 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1994 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c | 1995 | |
a4c8257b | 1996 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1997 | |
1998 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1999 | because that's what nlmconv does now. The real solution requires changes | |
2000 | to the stub and remote.c that I don't have time to do right now. */ | |
2001 | ||
a4c8257b EZ |
2002 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
2003 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
2004 | |
2005 | objfile_relocate (symfile_objfile, offs); | |
2006 | } | |
2007 | ||
0f71a2f6 JM |
2008 | /* |
2009 | * Cisco version of section offsets: | |
2010 | * | |
2011 | * Instead of having GDB query the target for the section offsets, | |
2012 | * Cisco lets the target volunteer the information! It's also in | |
2013 | * a different format, so here are the functions that will decode | |
2014 | * a section offset packet from a Cisco target. | |
2015 | */ | |
2016 | ||
2017 | /* | |
2018 | * Function: remote_cisco_section_offsets | |
2019 | * | |
2020 | * Returns: zero for success, non-zero for failure | |
2021 | */ | |
2022 | ||
c5aa993b | 2023 | static int |
c2d11a7d JM |
2024 | remote_cisco_section_offsets (bfd_vma text_addr, |
2025 | bfd_vma data_addr, | |
2026 | bfd_vma bss_addr, | |
2027 | bfd_signed_vma *text_offs, | |
2028 | bfd_signed_vma *data_offs, | |
2029 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
2030 | { |
2031 | bfd_vma text_base, data_base, bss_base; | |
2032 | struct minimal_symbol *start; | |
2033 | asection *sect; | |
c5aa993b | 2034 | bfd *abfd; |
0f71a2f6 | 2035 | int len; |
0f71a2f6 JM |
2036 | |
2037 | if (symfile_objfile == NULL) | |
c5aa993b | 2038 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
2039 | |
2040 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
2041 | if (start == NULL) | |
c5aa993b | 2042 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
2043 | |
2044 | data_base = bss_base = 0; | |
2045 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
2046 | ||
2047 | abfd = symfile_objfile->obfd; | |
c5aa993b | 2048 | for (sect = abfd->sections; |
0f71a2f6 JM |
2049 | sect != 0; |
2050 | sect = sect->next) | |
2051 | { | |
ce359b09 | 2052 | const char *p = bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
2053 | len = strlen (p); |
2054 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
2055 | if (data_base == 0 || | |
2056 | data_base > bfd_get_section_vma (abfd, sect)) | |
2057 | data_base = bfd_get_section_vma (abfd, sect); | |
2058 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 2059 | if (bss_base == 0 || |
0f71a2f6 JM |
2060 | bss_base > bfd_get_section_vma (abfd, sect)) |
2061 | bss_base = bfd_get_section_vma (abfd, sect); | |
2062 | } | |
2063 | *text_offs = text_addr - text_base; | |
2064 | *data_offs = data_addr - data_base; | |
c5aa993b | 2065 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
2066 | if (remote_debug) |
2067 | { | |
2068 | char tmp[128]; | |
2069 | ||
2070 | sprintf (tmp, "VMA: text = 0x"); | |
2071 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 2072 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 2073 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 2074 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
2075 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
2076 | fprintf_filtered (gdb_stdlog, tmp); | |
2077 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
2078 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
2079 | paddr_nz (*text_offs), | |
2080 | paddr_nz (*data_offs), | |
2081 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
2082 | } |
2083 | ||
2084 | return 0; | |
2085 | } | |
2086 | ||
2087 | /* | |
2088 | * Function: remote_cisco_objfile_relocate | |
2089 | * | |
2090 | * Relocate the symbol file for a remote target. | |
2091 | */ | |
2092 | ||
96baa820 | 2093 | void |
fba45db2 KB |
2094 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
2095 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
2096 | { |
2097 | struct section_offsets *offs; | |
2098 | ||
c5aa993b | 2099 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2100 | { |
2101 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
2102 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
2103 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 2104 | |
d4f3574e SS |
2105 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
2106 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 | 2107 | |
a4c8257b EZ |
2108 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
2109 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
2110 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
2111 | |
2112 | /* First call the standard objfile_relocate. */ | |
2113 | objfile_relocate (symfile_objfile, offs); | |
2114 | ||
2115 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
2116 | the exec target. These entries will control memory transfers |
2117 | from the exec file. */ | |
0f71a2f6 JM |
2118 | |
2119 | exec_set_section_offsets (text_off, data_off, bss_off); | |
2120 | } | |
2121 | } | |
2122 | ||
c906108c SS |
2123 | /* Stub for catch_errors. */ |
2124 | ||
0f71a2f6 | 2125 | static int |
36918e70 | 2126 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 JM |
2127 | { |
2128 | start_remote (); /* Initialize gdb process mechanisms */ | |
36918e70 AC |
2129 | /* NOTE: Return something >=0. A -ve value is reserved for |
2130 | catch_exceptions. */ | |
0f71a2f6 JM |
2131 | return 1; |
2132 | } | |
2133 | ||
c906108c | 2134 | static int |
36918e70 | 2135 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 2136 | { |
8edbea78 | 2137 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2138 | |
2139 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2140 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2141 | |
2142 | /* Let the stub know that we want it to return the thread. */ | |
2143 | set_thread (-1, 0); | |
2144 | ||
39f77062 | 2145 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2146 | |
2147 | get_offsets (); /* Get text, data & bss offsets */ | |
2148 | ||
2149 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2150 | immediate_quit--; |
c906108c | 2151 | |
36918e70 AC |
2152 | /* NOTE: See comment above in remote_start_remote_dummy(). This |
2153 | function returns something >=0. */ | |
2154 | return remote_start_remote_dummy (uiout, dummy); | |
c906108c SS |
2155 | } |
2156 | ||
2157 | /* Open a connection to a remote debugger. | |
2158 | NAME is the filename used for communication. */ | |
2159 | ||
2160 | static void | |
fba45db2 | 2161 | remote_open (char *name, int from_tty) |
c906108c SS |
2162 | { |
2163 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
2164 | } | |
2165 | ||
43ff13b4 JM |
2166 | /* Just like remote_open, but with asynchronous support. */ |
2167 | static void | |
fba45db2 | 2168 | remote_async_open (char *name, int from_tty) |
43ff13b4 JM |
2169 | { |
2170 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
2171 | } | |
2172 | ||
c906108c SS |
2173 | /* Open a connection to a remote debugger using the extended |
2174 | remote gdb protocol. NAME is the filename used for communication. */ | |
2175 | ||
2176 | static void | |
fba45db2 | 2177 | extended_remote_open (char *name, int from_tty) |
c906108c | 2178 | { |
c5aa993b | 2179 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
2180 | } |
2181 | ||
43ff13b4 JM |
2182 | /* Just like extended_remote_open, but with asynchronous support. */ |
2183 | static void | |
fba45db2 | 2184 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2185 | { |
c5aa993b | 2186 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
2187 | } |
2188 | ||
c906108c SS |
2189 | /* Generic code for opening a connection to a remote target. */ |
2190 | ||
d471ea57 AC |
2191 | static void |
2192 | init_all_packet_configs (void) | |
2193 | { | |
2194 | int i; | |
44eaed12 C |
2195 | update_packet_config (&remote_protocol_e); |
2196 | update_packet_config (&remote_protocol_E); | |
d471ea57 | 2197 | update_packet_config (&remote_protocol_P); |
dc8acb97 | 2198 | update_packet_config (&remote_protocol_qSymbol); |
d471ea57 AC |
2199 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2200 | update_packet_config (&remote_protocol_Z[i]); | |
2201 | /* Force remote_write_bytes to check whether target supports binary | |
2202 | downloading. */ | |
2203 | update_packet_config (&remote_protocol_binary_download); | |
2204 | } | |
2205 | ||
dc8acb97 MS |
2206 | /* Symbol look-up. */ |
2207 | ||
2208 | static void | |
2209 | remote_check_symbols (struct objfile *objfile) | |
2210 | { | |
d01949b6 | 2211 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2212 | char *msg, *reply, *tmp; |
2213 | struct minimal_symbol *sym; | |
2214 | int end; | |
2215 | ||
2216 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2217 | return; | |
2218 | ||
d01949b6 AC |
2219 | msg = alloca (rs->remote_packet_size); |
2220 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2221 | |
2222 | /* Invite target to request symbol lookups. */ | |
2223 | ||
2224 | putpkt ("qSymbol::"); | |
d01949b6 | 2225 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2226 | packet_ok (reply, &remote_protocol_qSymbol); |
2227 | ||
2228 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2229 | { | |
2230 | tmp = &reply[8]; | |
2231 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2232 | msg[end] = '\0'; | |
2233 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2234 | if (sym == NULL) | |
2235 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2236 | else | |
2237 | sprintf (msg, "qSymbol:%s:%s", | |
2238 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
2239 | &reply[8]); | |
2240 | putpkt (msg); | |
d01949b6 | 2241 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2242 | } |
2243 | } | |
2244 | ||
9db8d71f DJ |
2245 | static struct serial * |
2246 | remote_serial_open (char *name) | |
2247 | { | |
2248 | static int udp_warning = 0; | |
2249 | ||
2250 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2251 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2252 | serial connection is reliable and not the serial connection promising | |
2253 | to be. */ | |
2254 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2255 | { | |
2256 | warning ("The remote protocol may be unreliable over UDP."); | |
2257 | warning ("Some events may be lost, rendering further debugging " | |
2258 | "impossible."); | |
2259 | udp_warning = 1; | |
2260 | } | |
2261 | ||
2262 | return serial_open (name); | |
2263 | } | |
2264 | ||
c906108c | 2265 | static void |
fba45db2 KB |
2266 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
2267 | int extended_p) | |
c906108c | 2268 | { |
36918e70 | 2269 | int ex; |
d01949b6 | 2270 | struct remote_state *rs = get_remote_state (); |
c906108c | 2271 | if (name == 0) |
22e04375 AC |
2272 | error ("To open a remote debug connection, you need to specify what\n" |
2273 | "serial device is attached to the remote system\n" | |
2274 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2275 | |
6426a772 JM |
2276 | /* See FIXME above */ |
2277 | wait_forever_enabled_p = 1; | |
2278 | ||
c906108c SS |
2279 | target_preopen (from_tty); |
2280 | ||
2281 | unpush_target (target); | |
2282 | ||
9db8d71f | 2283 | remote_desc = remote_serial_open (name); |
c906108c SS |
2284 | if (!remote_desc) |
2285 | perror_with_name (name); | |
2286 | ||
2287 | if (baud_rate != -1) | |
2288 | { | |
2cd58942 | 2289 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2290 | { |
2cd58942 | 2291 | serial_close (remote_desc); |
c906108c SS |
2292 | perror_with_name (name); |
2293 | } | |
2294 | } | |
2295 | ||
2cd58942 | 2296 | serial_raw (remote_desc); |
c906108c SS |
2297 | |
2298 | /* If there is something sitting in the buffer we might take it as a | |
2299 | response to a command, which would be bad. */ | |
2cd58942 | 2300 | serial_flush_input (remote_desc); |
c906108c SS |
2301 | |
2302 | if (from_tty) | |
2303 | { | |
2304 | puts_filtered ("Remote debugging using "); | |
2305 | puts_filtered (name); | |
2306 | puts_filtered ("\n"); | |
2307 | } | |
c5aa993b | 2308 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2309 | |
d471ea57 | 2310 | init_all_packet_configs (); |
96baa820 | 2311 | |
c5aa993b | 2312 | general_thread = -2; |
cce74817 | 2313 | continue_thread = -2; |
c906108c | 2314 | |
9d1f7ab2 MS |
2315 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2316 | use_threadinfo_query = 1; | |
2317 | use_threadextra_query = 1; | |
2318 | ||
c906108c SS |
2319 | /* Without this, some commands which require an active target (such |
2320 | as kill) won't work. This variable serves (at least) double duty | |
2321 | as both the pid of the target process (if it has such), and as a | |
2322 | flag indicating that a target is active. These functions should | |
2323 | be split out into seperate variables, especially since GDB will | |
2324 | someday have a notion of debugging several processes. */ | |
2325 | ||
39f77062 | 2326 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
f78f6cf1 MS |
2327 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2328 | /* First delete any symbols previously loaded from shared libraries. */ | |
2329 | no_shared_libraries (NULL, 0); | |
2330 | #endif | |
2331 | ||
36918e70 | 2332 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2333 | target (we'd otherwise be in an inconsistent state) and then |
2334 | propogate the error on up the exception chain. This ensures that | |
2335 | the caller doesn't stumble along blindly assuming that the | |
2336 | function succeeded. The CLI doesn't have this problem but other | |
2337 | UI's, such as MI do. | |
36918e70 AC |
2338 | |
2339 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2340 | this function should return an error indication letting the | |
2341 | caller restore the previous state. Unfortunatly the command | |
2342 | ``target remote'' is directly wired to this function making that | |
2343 | impossible. On a positive note, the CLI side of this problem has | |
2344 | been fixed - the function set_cmd_context() makes it possible for | |
2345 | all the ``target ....'' commands to share a common callback | |
2346 | function. See cli-dump.c. */ | |
2347 | ex = catch_exceptions (uiout, | |
2348 | remote_start_remote, NULL, | |
2349 | "Couldn't establish connection to remote" | |
2350 | " target\n", | |
2351 | RETURN_MASK_ALL); | |
2352 | if (ex < 0) | |
c906108c SS |
2353 | { |
2354 | pop_target (); | |
165b8e33 | 2355 | throw_exception (ex); |
c906108c SS |
2356 | } |
2357 | ||
2358 | if (extended_p) | |
2359 | { | |
6240bebf | 2360 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2361 | char *buf = alloca (rs->remote_packet_size); |
c906108c | 2362 | putpkt ("!"); |
d01949b6 | 2363 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 2364 | } |
f78f6cf1 | 2365 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2366 | /* FIXME: need a master target_open vector from which all |
2367 | remote_opens can be called, so that stuff like this can | |
2368 | go there. Failing that, the following code must be copied | |
2369 | to the open function for any remote target that wants to | |
2370 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2371 | |
2372 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2373 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2374 | { |
2375 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2376 | remote_check_symbols (symfile_objfile); | |
2377 | } | |
6240bebf | 2378 | #endif |
c906108c SS |
2379 | } |
2380 | ||
43ff13b4 JM |
2381 | /* Just like remote_open but with asynchronous support. */ |
2382 | static void | |
fba45db2 KB |
2383 | remote_async_open_1 (char *name, int from_tty, struct target_ops *target, |
2384 | int extended_p) | |
43ff13b4 | 2385 | { |
36918e70 | 2386 | int ex; |
d01949b6 | 2387 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 2388 | if (name == 0) |
22e04375 AC |
2389 | error ("To open a remote debug connection, you need to specify what\n" |
2390 | "serial device is attached to the remote system\n" | |
2391 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
43ff13b4 JM |
2392 | |
2393 | target_preopen (from_tty); | |
2394 | ||
2395 | unpush_target (target); | |
2396 | ||
9db8d71f | 2397 | remote_desc = remote_serial_open (name); |
43ff13b4 JM |
2398 | if (!remote_desc) |
2399 | perror_with_name (name); | |
2400 | ||
2401 | if (baud_rate != -1) | |
2402 | { | |
2cd58942 | 2403 | if (serial_setbaudrate (remote_desc, baud_rate)) |
43ff13b4 | 2404 | { |
2cd58942 | 2405 | serial_close (remote_desc); |
43ff13b4 JM |
2406 | perror_with_name (name); |
2407 | } | |
2408 | } | |
2409 | ||
2cd58942 | 2410 | serial_raw (remote_desc); |
43ff13b4 JM |
2411 | |
2412 | /* If there is something sitting in the buffer we might take it as a | |
2413 | response to a command, which would be bad. */ | |
2cd58942 | 2414 | serial_flush_input (remote_desc); |
43ff13b4 JM |
2415 | |
2416 | if (from_tty) | |
2417 | { | |
2418 | puts_filtered ("Remote debugging using "); | |
2419 | puts_filtered (name); | |
2420 | puts_filtered ("\n"); | |
2421 | } | |
2422 | ||
c5aa993b | 2423 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2424 | |
d471ea57 | 2425 | init_all_packet_configs (); |
43ff13b4 | 2426 | |
c5aa993b | 2427 | general_thread = -2; |
43ff13b4 JM |
2428 | continue_thread = -2; |
2429 | ||
9d1f7ab2 MS |
2430 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2431 | use_threadinfo_query = 1; | |
2432 | use_threadextra_query = 1; | |
2433 | ||
43ff13b4 JM |
2434 | /* Without this, some commands which require an active target (such |
2435 | as kill) won't work. This variable serves (at least) double duty | |
2436 | as both the pid of the target process (if it has such), and as a | |
2437 | flag indicating that a target is active. These functions should | |
2438 | be split out into seperate variables, especially since GDB will | |
2439 | someday have a notion of debugging several processes. */ | |
39f77062 | 2440 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
6426a772 JM |
2441 | |
2442 | /* With this target we start out by owning the terminal. */ | |
2443 | remote_async_terminal_ours_p = 1; | |
2444 | ||
2445 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2446 | assumed that the target is already ready and able to respond to | |
e26cc349 | 2447 | requests. Unfortunately remote_start_remote() eventually calls |
6426a772 JM |
2448 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
2449 | around this. Eventually a mechanism that allows | |
2450 | wait_for_inferior() to expect/get timeouts will be | |
2451 | implemented. */ | |
2452 | wait_forever_enabled_p = 0; | |
2453 | ||
f78f6cf1 MS |
2454 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2455 | /* First delete any symbols previously loaded from shared libraries. */ | |
2456 | no_shared_libraries (NULL, 0); | |
2457 | #endif | |
2458 | ||
36918e70 | 2459 | /* Start the remote connection; if error, discard this target. See |
165b8e33 AC |
2460 | the comments in remote_open_1() for further details such as the |
2461 | need to re-throw the exception. */ | |
36918e70 AC |
2462 | ex = catch_exceptions (uiout, |
2463 | remote_start_remote, NULL, | |
2464 | "Couldn't establish connection to remote" | |
2465 | " target\n", | |
2466 | RETURN_MASK_ALL); | |
2467 | if (ex < 0) | |
43ff13b4 | 2468 | { |
43ff13b4 | 2469 | pop_target (); |
6426a772 | 2470 | wait_forever_enabled_p = 1; |
165b8e33 | 2471 | throw_exception (ex); |
43ff13b4 JM |
2472 | } |
2473 | ||
6426a772 JM |
2474 | wait_forever_enabled_p = 1; |
2475 | ||
2476 | if (extended_p) | |
43ff13b4 | 2477 | { |
6240bebf | 2478 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2479 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2480 | putpkt ("!"); |
d01949b6 | 2481 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2482 | } |
f78f6cf1 | 2483 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2484 | /* FIXME: need a master target_open vector from which all |
2485 | remote_opens can be called, so that stuff like this can | |
2486 | go there. Failing that, the following code must be copied | |
2487 | to the open function for any remote target that wants to | |
2488 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2489 | |
2490 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2491 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2492 | { |
2493 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2494 | remote_check_symbols (symfile_objfile); | |
2495 | } | |
6240bebf | 2496 | #endif |
43ff13b4 JM |
2497 | } |
2498 | ||
c906108c SS |
2499 | /* This takes a program previously attached to and detaches it. After |
2500 | this is done, GDB can be used to debug some other program. We | |
2501 | better not have left any breakpoints in the target program or it'll | |
2502 | die when it hits one. */ | |
2503 | ||
2504 | static void | |
fba45db2 | 2505 | remote_detach (char *args, int from_tty) |
c906108c | 2506 | { |
d01949b6 AC |
2507 | struct remote_state *rs = get_remote_state (); |
2508 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2509 | |
2510 | if (args) | |
2511 | error ("Argument given to \"detach\" when remotely debugging."); | |
2512 | ||
2513 | /* Tell the remote target to detach. */ | |
2514 | strcpy (buf, "D"); | |
d01949b6 | 2515 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2516 | |
cca728d0 | 2517 | target_mourn_inferior (); |
c906108c SS |
2518 | if (from_tty) |
2519 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2520 | |
c906108c SS |
2521 | } |
2522 | ||
43ff13b4 JM |
2523 | /* Same as remote_detach, but with async support. */ |
2524 | static void | |
fba45db2 | 2525 | remote_async_detach (char *args, int from_tty) |
43ff13b4 | 2526 | { |
d01949b6 AC |
2527 | struct remote_state *rs = get_remote_state (); |
2528 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2529 | |
2530 | if (args) | |
2531 | error ("Argument given to \"detach\" when remotely debugging."); | |
2532 | ||
2533 | /* Tell the remote target to detach. */ | |
2534 | strcpy (buf, "D"); | |
d01949b6 | 2535 | remote_send (buf, (rs->remote_packet_size)); |
43ff13b4 JM |
2536 | |
2537 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 2538 | if (target_is_async_p ()) |
2cd58942 | 2539 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2540 | |
cca728d0 | 2541 | target_mourn_inferior (); |
43ff13b4 JM |
2542 | if (from_tty) |
2543 | puts_filtered ("Ending remote debugging.\n"); | |
2544 | } | |
2545 | ||
c906108c SS |
2546 | /* Convert hex digit A to a number. */ |
2547 | ||
30559e10 | 2548 | static int |
fba45db2 | 2549 | fromhex (int a) |
c906108c SS |
2550 | { |
2551 | if (a >= '0' && a <= '9') | |
2552 | return a - '0'; | |
2553 | else if (a >= 'a' && a <= 'f') | |
2554 | return a - 'a' + 10; | |
2555 | else if (a >= 'A' && a <= 'F') | |
2556 | return a - 'A' + 10; | |
c5aa993b | 2557 | else |
c906108c SS |
2558 | error ("Reply contains invalid hex digit %d", a); |
2559 | } | |
2560 | ||
30559e10 MS |
2561 | static int |
2562 | hex2bin (const char *hex, char *bin, int count) | |
2563 | { | |
2564 | int i; | |
2565 | ||
30559e10 MS |
2566 | for (i = 0; i < count; i++) |
2567 | { | |
2568 | if (hex[0] == 0 || hex[1] == 0) | |
2569 | { | |
2570 | /* Hex string is short, or of uneven length. | |
2571 | Return the count that has been converted so far. */ | |
2572 | return i; | |
2573 | } | |
2574 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2575 | hex += 2; | |
2576 | } | |
2577 | return i; | |
2578 | } | |
2579 | ||
c906108c SS |
2580 | /* Convert number NIB to a hex digit. */ |
2581 | ||
2582 | static int | |
fba45db2 | 2583 | tohex (int nib) |
c906108c SS |
2584 | { |
2585 | if (nib < 10) | |
c5aa993b | 2586 | return '0' + nib; |
c906108c | 2587 | else |
c5aa993b | 2588 | return 'a' + nib - 10; |
c906108c | 2589 | } |
30559e10 MS |
2590 | |
2591 | static int | |
234fa6d1 | 2592 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2593 | { |
2594 | int i; | |
2595 | /* May use a length, or a nul-terminated string as input. */ | |
2596 | if (count == 0) | |
2597 | count = strlen (bin); | |
2598 | ||
2599 | for (i = 0; i < count; i++) | |
2600 | { | |
2601 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2602 | *hex++ = tohex (*bin++ & 0xf); | |
2603 | } | |
2604 | *hex = 0; | |
2605 | return i; | |
2606 | } | |
c906108c SS |
2607 | \f |
2608 | /* Tell the remote machine to resume. */ | |
2609 | ||
2610 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2611 | ||
2612 | static int last_sent_step; | |
2613 | ||
2614 | static void | |
39f77062 | 2615 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
c906108c | 2616 | { |
d01949b6 AC |
2617 | struct remote_state *rs = get_remote_state (); |
2618 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2619 | int pid = PIDGET (ptid); |
44eaed12 | 2620 | char *p; |
c906108c SS |
2621 | |
2622 | if (pid == -1) | |
2623 | set_thread (0, 0); /* run any thread */ | |
2624 | else | |
2625 | set_thread (pid, 0); /* run this thread */ | |
2626 | ||
c906108c SS |
2627 | last_sent_signal = siggnal; |
2628 | last_sent_step = step; | |
2629 | ||
2630 | /* A hook for when we need to do something at the last moment before | |
2631 | resumption. */ | |
2632 | if (target_resume_hook) | |
2633 | (*target_resume_hook) (); | |
2634 | ||
44eaed12 C |
2635 | |
2636 | /* The s/S/c/C packets do not return status. So if the target does | |
2637 | not support the S or C packets, the debug agent returns an empty | |
2638 | string which is detected in remote_wait(). This protocol defect | |
2639 | is fixed in the e/E packets. */ | |
2640 | ||
2641 | if (step && step_range_end) | |
2642 | { | |
2643 | /* If the target does not support the 'E' packet, we try the 'S' | |
2644 | packet. Ideally we would fall back to the 'e' packet if that | |
2645 | too is not supported. But that would require another copy of | |
2646 | the code to issue the 'e' packet (and fall back to 's' if not | |
2647 | supported) in remote_wait(). */ | |
2648 | ||
2649 | if (siggnal != TARGET_SIGNAL_0) | |
2650 | { | |
2651 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2652 | { | |
2653 | p = buf; | |
2654 | *p++ = 'E'; | |
2655 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2656 | *p++ = tohex (((int) siggnal) & 0xf); | |
2657 | *p++ = ','; | |
2658 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2659 | *p++ = ','; | |
2660 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2661 | *p++ = 0; | |
2662 | ||
2663 | putpkt (buf); | |
d01949b6 | 2664 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2665 | |
234fa6d1 | 2666 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2667 | return; |
2668 | } | |
2669 | } | |
2670 | else | |
2671 | { | |
2672 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2673 | { | |
2674 | p = buf; | |
2675 | *p++ = 'e'; | |
2676 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2677 | *p++ = ','; | |
2678 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2679 | *p++ = 0; | |
2680 | ||
2681 | putpkt (buf); | |
d01949b6 | 2682 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2683 | |
234fa6d1 | 2684 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2685 | return; |
2686 | } | |
2687 | } | |
2688 | } | |
2689 | ||
c906108c SS |
2690 | if (siggnal != TARGET_SIGNAL_0) |
2691 | { | |
2692 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2693 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
44eaed12 | 2694 | buf[2] = tohex (((int) siggnal) & 0xf); |
c906108c SS |
2695 | buf[3] = '\0'; |
2696 | } | |
2697 | else | |
c5aa993b | 2698 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2699 | |
2700 | putpkt (buf); | |
2701 | } | |
43ff13b4 JM |
2702 | |
2703 | /* Same as remote_resume, but with async support. */ | |
2704 | static void | |
39f77062 | 2705 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2706 | { |
d01949b6 AC |
2707 | struct remote_state *rs = get_remote_state (); |
2708 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2709 | int pid = PIDGET (ptid); |
44eaed12 | 2710 | char *p; |
43ff13b4 JM |
2711 | |
2712 | if (pid == -1) | |
2713 | set_thread (0, 0); /* run any thread */ | |
2714 | else | |
2715 | set_thread (pid, 0); /* run this thread */ | |
2716 | ||
43ff13b4 JM |
2717 | last_sent_signal = siggnal; |
2718 | last_sent_step = step; | |
2719 | ||
2720 | /* A hook for when we need to do something at the last moment before | |
2721 | resumption. */ | |
2722 | if (target_resume_hook) | |
2723 | (*target_resume_hook) (); | |
2724 | ||
44eaed12 C |
2725 | /* The s/S/c/C packets do not return status. So if the target does |
2726 | not support the S or C packets, the debug agent returns an empty | |
2727 | string which is detected in remote_wait(). This protocol defect | |
2728 | is fixed in the e/E packets. */ | |
2729 | ||
2730 | if (step && step_range_end) | |
2731 | { | |
2732 | /* If the target does not support the 'E' packet, we try the 'S' | |
2733 | packet. Ideally we would fall back to the 'e' packet if that | |
2734 | too is not supported. But that would require another copy of | |
2735 | the code to issue the 'e' packet (and fall back to 's' if not | |
2736 | supported) in remote_wait(). */ | |
2737 | ||
2738 | if (siggnal != TARGET_SIGNAL_0) | |
2739 | { | |
2740 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2741 | { | |
2742 | p = buf; | |
2743 | *p++ = 'E'; | |
2744 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2745 | *p++ = tohex (((int) siggnal) & 0xf); | |
2746 | *p++ = ','; | |
2747 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2748 | *p++ = ','; | |
2749 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2750 | *p++ = 0; | |
2751 | ||
2752 | putpkt (buf); | |
d01949b6 | 2753 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2754 | |
234fa6d1 | 2755 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2756 | goto register_event_loop; |
2757 | } | |
2758 | } | |
2759 | else | |
2760 | { | |
2761 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2762 | { | |
2763 | p = buf; | |
2764 | *p++ = 'e'; | |
2765 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2766 | *p++ = ','; | |
2767 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2768 | *p++ = 0; | |
2769 | ||
2770 | putpkt (buf); | |
d01949b6 | 2771 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2772 | |
234fa6d1 | 2773 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2774 | goto register_event_loop; |
2775 | } | |
2776 | } | |
2777 | } | |
2778 | ||
43ff13b4 JM |
2779 | if (siggnal != TARGET_SIGNAL_0) |
2780 | { | |
2781 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2782 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2783 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2784 | buf[3] = '\0'; |
2785 | } | |
2786 | else | |
c5aa993b | 2787 | strcpy (buf, step ? "s" : "c"); |
44eaed12 C |
2788 | |
2789 | putpkt (buf); | |
43ff13b4 | 2790 | |
44eaed12 | 2791 | register_event_loop: |
2acceee2 JM |
2792 | /* We are about to start executing the inferior, let's register it |
2793 | with the event loop. NOTE: this is the one place where all the | |
2794 | execution commands end up. We could alternatively do this in each | |
2795 | of the execution commands in infcmd.c.*/ | |
2796 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2797 | into infcmd.c in order to allow inferior function calls to work | |
2798 | NOT asynchronously. */ | |
ed9a39eb | 2799 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2800 | target_async (inferior_event_handler, 0); |
2801 | /* Tell the world that the target is now executing. */ | |
2802 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2803 | this? Instead, should the client of target just assume (for | |
2804 | async targets) that the target is going to start executing? Is | |
2805 | this information already found in the continuation block? */ | |
ed9a39eb | 2806 | if (target_is_async_p ()) |
2acceee2 | 2807 | target_executing = 1; |
43ff13b4 | 2808 | } |
c906108c | 2809 | \f |
43ff13b4 JM |
2810 | |
2811 | /* Set up the signal handler for SIGINT, while the target is | |
2812 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2813 | static void | |
fba45db2 | 2814 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2815 | { |
c5aa993b | 2816 | sigint_remote_token = |
43ff13b4 JM |
2817 | create_async_signal_handler (async_remote_interrupt, NULL); |
2818 | signal (SIGINT, handle_remote_sigint); | |
2819 | } | |
2820 | ||
2821 | /* Signal handler for SIGINT, while the target is executing. */ | |
2822 | static void | |
fba45db2 | 2823 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2824 | { |
2825 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2826 | sigint_remote_twice_token = |
43ff13b4 JM |
2827 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2828 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2829 | } | |
2830 | ||
2831 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2832 | sent once. It will take effect the second time that the user sends | |
2833 | a ^C. */ | |
2834 | static void | |
fba45db2 | 2835 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2836 | { |
2837 | signal (sig, handle_sigint); | |
c5aa993b | 2838 | sigint_remote_twice_token = |
2df3850c | 2839 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2840 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2841 | } | |
2842 | ||
6426a772 | 2843 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2844 | to a ^C. */ |
c5aa993b | 2845 | static void |
fba45db2 | 2846 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2847 | { |
2848 | if (remote_debug) | |
2849 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2850 | ||
2851 | target_stop (); | |
2852 | } | |
2853 | ||
2854 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2855 | up on the target alltogether. */ | |
2df3850c | 2856 | void |
fba45db2 | 2857 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2858 | { |
2df3850c JM |
2859 | if (remote_debug) |
2860 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2861 | /* Do something only if the target was not killed by the previous |
2862 | cntl-C. */ | |
2863 | if (target_executing) | |
2864 | { | |
2865 | interrupt_query (); | |
2866 | signal (SIGINT, handle_remote_sigint); | |
2867 | } | |
43ff13b4 JM |
2868 | } |
2869 | ||
2870 | /* Reinstall the usual SIGINT handlers, after the target has | |
2871 | stopped. */ | |
6426a772 JM |
2872 | static void |
2873 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2874 | { |
2875 | signal (SIGINT, handle_sigint); | |
2876 | if (sigint_remote_twice_token) | |
c2c6d25f | 2877 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2878 | if (sigint_remote_token) |
c2c6d25f | 2879 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2880 | } |
2881 | ||
c906108c SS |
2882 | /* Send ^C to target to halt it. Target will respond, and send us a |
2883 | packet. */ | |
507f3c78 | 2884 | static void (*ofunc) (int); |
c906108c | 2885 | |
7a292a7a SS |
2886 | /* The command line interface's stop routine. This function is installed |
2887 | as a signal handler for SIGINT. The first time a user requests a | |
2888 | stop, we call remote_stop to send a break or ^C. If there is no | |
2889 | response from the target (it didn't stop when the user requested it), | |
2890 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2891 | static void |
fba45db2 | 2892 | remote_interrupt (int signo) |
c906108c | 2893 | { |
7a292a7a SS |
2894 | /* If this doesn't work, try more severe steps. */ |
2895 | signal (signo, remote_interrupt_twice); | |
2896 | ||
2897 | if (remote_debug) | |
0f71a2f6 | 2898 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2899 | |
2900 | target_stop (); | |
2901 | } | |
2902 | ||
2903 | /* The user typed ^C twice. */ | |
2904 | ||
2905 | static void | |
fba45db2 | 2906 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2907 | { |
2908 | signal (signo, ofunc); | |
2909 | interrupt_query (); | |
c906108c SS |
2910 | signal (signo, remote_interrupt); |
2911 | } | |
7a292a7a SS |
2912 | |
2913 | /* This is the generic stop called via the target vector. When a target | |
2914 | interrupt is requested, either by the command line or the GUI, we | |
2915 | will eventually end up here. */ | |
c906108c | 2916 | static void |
fba45db2 | 2917 | remote_stop (void) |
c906108c | 2918 | { |
7a292a7a SS |
2919 | /* Send a break or a ^C, depending on user preference. */ |
2920 | if (remote_debug) | |
0f71a2f6 | 2921 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2922 | |
7a292a7a | 2923 | if (remote_break) |
2cd58942 | 2924 | serial_send_break (remote_desc); |
c906108c | 2925 | else |
2cd58942 | 2926 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2927 | } |
2928 | ||
2929 | /* Ask the user what to do when an interrupt is received. */ | |
2930 | ||
2931 | static void | |
fba45db2 | 2932 | interrupt_query (void) |
c906108c SS |
2933 | { |
2934 | target_terminal_ours (); | |
2935 | ||
2936 | if (query ("Interrupted while waiting for the program.\n\ | |
2937 | Give up (and stop debugging it)? ")) | |
2938 | { | |
2939 | target_mourn_inferior (); | |
b5a2688f | 2940 | throw_exception (RETURN_QUIT); |
c906108c SS |
2941 | } |
2942 | ||
2943 | target_terminal_inferior (); | |
2944 | } | |
2945 | ||
6426a772 JM |
2946 | /* Enable/disable target terminal ownership. Most targets can use |
2947 | terminal groups to control terminal ownership. Remote targets are | |
2948 | different in that explicit transfer of ownership to/from GDB/target | |
2949 | is required. */ | |
2950 | ||
2951 | static void | |
2952 | remote_async_terminal_inferior (void) | |
2953 | { | |
2954 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2955 | sync_execution here. This function should only be called when | |
2956 | GDB is resuming the inferior in the forground. A background | |
2957 | resume (``run&'') should leave GDB in control of the terminal and | |
2958 | consequently should not call this code. */ | |
2959 | if (!sync_execution) | |
2960 | return; | |
2961 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2962 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2963 | to an asynchronous target with a synchronous command calls this | |
2964 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2965 | stops trying to transfer the terminal to the target when it | |
2966 | shouldn't this guard can go away. */ | |
2967 | if (!remote_async_terminal_ours_p) | |
2968 | return; | |
2969 | delete_file_handler (input_fd); | |
2970 | remote_async_terminal_ours_p = 0; | |
2971 | initialize_sigint_signal_handler (); | |
2972 | /* NOTE: At this point we could also register our selves as the | |
2973 | recipient of all input. Any characters typed could then be | |
2974 | passed on down to the target. */ | |
2975 | } | |
2976 | ||
2977 | static void | |
2978 | remote_async_terminal_ours (void) | |
2979 | { | |
2980 | /* See FIXME in remote_async_terminal_inferior. */ | |
2981 | if (!sync_execution) | |
2982 | return; | |
2983 | /* See FIXME in remote_async_terminal_inferior. */ | |
2984 | if (remote_async_terminal_ours_p) | |
2985 | return; | |
2986 | cleanup_sigint_signal_handler (NULL); | |
2987 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2988 | remote_async_terminal_ours_p = 1; | |
2989 | } | |
2990 | ||
c906108c SS |
2991 | /* If nonzero, ignore the next kill. */ |
2992 | ||
2993 | int kill_kludge; | |
2994 | ||
2995 | void | |
917317f4 | 2996 | remote_console_output (char *msg) |
c906108c SS |
2997 | { |
2998 | char *p; | |
2999 | ||
c5aa993b | 3000 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3001 | { |
3002 | char tb[2]; | |
3003 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3004 | tb[0] = c; | |
3005 | tb[1] = 0; | |
43ff13b4 | 3006 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3007 | } |
917317f4 | 3008 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3009 | } |
3010 | ||
0f71a2f6 JM |
3011 | /* Wait until the remote machine stops, then return, |
3012 | storing status in STATUS just as `wait' would. | |
3013 | Returns "pid", which in the case of a multi-threaded | |
3014 | remote OS, is the thread-id. */ | |
c906108c | 3015 | |
39f77062 KB |
3016 | static ptid_t |
3017 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3018 | { |
d01949b6 AC |
3019 | struct remote_state *rs = get_remote_state (); |
3020 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 3021 | ULONGEST thread_num = -1; |
3c3bea1c | 3022 | ULONGEST addr; |
c906108c SS |
3023 | |
3024 | status->kind = TARGET_WAITKIND_EXITED; | |
3025 | status->value.integer = 0; | |
3026 | ||
3027 | while (1) | |
3028 | { | |
3029 | unsigned char *p; | |
3030 | ||
c906108c | 3031 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 3032 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
3033 | signal (SIGINT, ofunc); |
3034 | ||
3035 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3036 | collection of trace data) every time the target stops. */ |
c906108c SS |
3037 | if (target_wait_loop_hook) |
3038 | (*target_wait_loop_hook) (); | |
3039 | ||
3c3bea1c GS |
3040 | remote_stopped_by_watchpoint_p = 0; |
3041 | ||
c906108c SS |
3042 | switch (buf[0]) |
3043 | { | |
3044 | case 'E': /* Error of some sort */ | |
3045 | warning ("Remote failure reply: %s", buf); | |
3046 | continue; | |
3047 | case 'T': /* Status with PC, SP, FP, ... */ | |
3048 | { | |
3049 | int i; | |
e6cbd02a | 3050 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
c906108c SS |
3051 | |
3052 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3053 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3054 | ss = signal number |
3055 | n... = register number | |
3056 | r... = register contents | |
3057 | */ | |
c906108c SS |
3058 | p = &buf[3]; /* after Txx */ |
3059 | ||
3060 | while (*p) | |
3061 | { | |
3062 | unsigned char *p1; | |
3063 | char *p_temp; | |
97345198 | 3064 | int fieldsize; |
3c3bea1c GS |
3065 | LONGEST pnum = 0; |
3066 | ||
3067 | /* If the packet contains a register number save it in pnum | |
3068 | and set p1 to point to the character following it. | |
3069 | Otherwise p1 points to p. */ | |
c906108c | 3070 | |
3c3bea1c GS |
3071 | /* If this packet is an awatch packet, don't parse the 'a' |
3072 | as a register number. */ | |
3073 | ||
3074 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3075 | { | |
3076 | /* Read the ``P'' register number. */ | |
3077 | pnum = strtol (p, &p_temp, 16); | |
3078 | p1 = (unsigned char *) p_temp; | |
3079 | } | |
3080 | else | |
3081 | p1 = p; | |
c906108c | 3082 | |
c5aa993b | 3083 | if (p1 == p) /* No register number present here */ |
c906108c | 3084 | { |
3c3bea1c | 3085 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c SS |
3086 | if (p1 == NULL) |
3087 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3088 | Packet: '%s'\n", | |
3089 | p, buf); | |
3c3bea1c | 3090 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3091 | { |
3092 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3093 | record_currthread (thread_num); | |
3094 | p = (unsigned char *) p_temp; | |
3095 | } | |
3c3bea1c GS |
3096 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3097 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3098 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3099 | { | |
3100 | remote_stopped_by_watchpoint_p = 1; | |
3101 | p = unpack_varlen_hex (++p1, &addr); | |
3102 | remote_watch_data_address = (CORE_ADDR)addr; | |
3103 | } | |
3104 | else | |
3105 | { | |
3106 | /* Silently skip unknown optional info. */ | |
3107 | p_temp = strchr (p1 + 1, ';'); | |
3108 | if (p_temp) | |
3109 | p = (unsigned char *) p_temp; | |
3110 | } | |
c906108c SS |
3111 | } |
3112 | else | |
3113 | { | |
ad10f812 | 3114 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
3115 | p = p1; |
3116 | ||
3117 | if (*p++ != ':') | |
3118 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3119 | Packet: '%s'\n", | |
3120 | p, buf); | |
3121 | ||
ad10f812 AC |
3122 | if (reg == NULL) |
3123 | warning ("Remote sent bad register number %s: %s\n\ | |
c906108c | 3124 | Packet: '%s'\n", |
ad10f812 | 3125 | phex_nz (pnum, 0), p, buf); |
c906108c | 3126 | |
ad10f812 | 3127 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum)); |
97345198 | 3128 | p += 2 * fieldsize; |
ad10f812 | 3129 | if (fieldsize < REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3130 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3131 | supply_register (reg->regnum, regs); |
c906108c SS |
3132 | } |
3133 | ||
3134 | if (*p++ != ';') | |
3135 | { | |
3136 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3137 | warning (" here: %s", p); |
c906108c SS |
3138 | } |
3139 | } | |
3140 | } | |
3141 | /* fall through */ | |
3142 | case 'S': /* Old style status, just signal only */ | |
3143 | status->kind = TARGET_WAITKIND_STOPPED; | |
3144 | status->value.sig = (enum target_signal) | |
3145 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3146 | ||
0f71a2f6 JM |
3147 | if (buf[3] == 'p') |
3148 | { | |
3149 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3150 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3151 | |
3152 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3153 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3154 | value_from_string ("PDEBUG-")); |
3155 | cisco_kernel_mode = 0; | |
3156 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3157 | record_currthread (thread_num); | |
3158 | } | |
3159 | else if (buf[3] == 'k') | |
3160 | { | |
3161 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3162 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3163 | |
3164 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3165 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3166 | value_from_string ("KDEBUG-")); |
3167 | cisco_kernel_mode = 1; | |
3168 | } | |
c906108c | 3169 | goto got_status; |
0f71a2f6 JM |
3170 | case 'N': /* Cisco special: status and offsets */ |
3171 | { | |
3172 | bfd_vma text_addr, data_addr, bss_addr; | |
3173 | bfd_signed_vma text_off, data_off, bss_off; | |
3174 | unsigned char *p1; | |
3175 | ||
3176 | status->kind = TARGET_WAITKIND_STOPPED; | |
3177 | status->value.sig = (enum target_signal) | |
3178 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3179 | ||
c5aa993b | 3180 | if (symfile_objfile == NULL) |
0f71a2f6 | 3181 | { |
d4f3574e | 3182 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
3183 | Packet Dropped"); |
3184 | goto got_status; | |
3185 | } | |
3186 | ||
3187 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3188 | * where AA is the signal number, TT is the new text | |
3189 | * address, DD * is the new data address, and BB is the | |
3190 | * new bss address. */ | |
3191 | ||
3192 | p = &buf[3]; | |
3193 | text_addr = strtoul (p, (char **) &p1, 16); | |
3194 | if (p1 == p || *p1 != ';') | |
3195 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3196 | p = p1 + 1; | |
3197 | data_addr = strtoul (p, (char **) &p1, 16); | |
3198 | if (p1 == p || *p1 != ';') | |
3199 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3200 | p = p1 + 1; | |
3201 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3202 | if (p1 == p) |
0f71a2f6 JM |
3203 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3204 | ||
3205 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3206 | &text_off, &data_off, &bss_off) | |
3207 | == 0) | |
c5aa993b | 3208 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
3209 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3210 | ||
3211 | goto got_status; | |
3212 | } | |
c906108c SS |
3213 | case 'W': /* Target exited */ |
3214 | { | |
3215 | /* The remote process exited. */ | |
3216 | status->kind = TARGET_WAITKIND_EXITED; | |
3217 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3218 | goto got_status; | |
3219 | } | |
3220 | case 'X': | |
3221 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3222 | status->value.sig = (enum target_signal) | |
3223 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3224 | kill_kludge = 1; | |
3225 | ||
3226 | goto got_status; | |
3227 | case 'O': /* Console output */ | |
3228 | remote_console_output (buf + 1); | |
3229 | continue; | |
3230 | case '\0': | |
3231 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3232 | { | |
3233 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3234 | the remote system doesn't support it. */ |
c906108c SS |
3235 | target_terminal_ours_for_output (); |
3236 | printf_filtered | |
3237 | ("Can't send signals to this remote system. %s not sent.\n", | |
3238 | target_signal_to_name (last_sent_signal)); | |
3239 | last_sent_signal = TARGET_SIGNAL_0; | |
3240 | target_terminal_inferior (); | |
3241 | ||
3242 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3243 | putpkt ((char *) buf); | |
3244 | continue; | |
3245 | } | |
3246 | /* else fallthrough */ | |
3247 | default: | |
3248 | warning ("Invalid remote reply: %s", buf); | |
3249 | continue; | |
3250 | } | |
3251 | } | |
c5aa993b | 3252 | got_status: |
c906108c SS |
3253 | if (thread_num != -1) |
3254 | { | |
39f77062 | 3255 | return pid_to_ptid (thread_num); |
c906108c | 3256 | } |
39f77062 | 3257 | return inferior_ptid; |
c906108c SS |
3258 | } |
3259 | ||
43ff13b4 | 3260 | /* Async version of remote_wait. */ |
39f77062 KB |
3261 | static ptid_t |
3262 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3263 | { |
d01949b6 AC |
3264 | struct remote_state *rs = get_remote_state (); |
3265 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 3266 | ULONGEST thread_num = -1; |
3c3bea1c | 3267 | ULONGEST addr; |
43ff13b4 JM |
3268 | |
3269 | status->kind = TARGET_WAITKIND_EXITED; | |
3270 | status->value.integer = 0; | |
3271 | ||
3c3bea1c GS |
3272 | remote_stopped_by_watchpoint_p = 0; |
3273 | ||
43ff13b4 JM |
3274 | while (1) |
3275 | { | |
3276 | unsigned char *p; | |
c5aa993b | 3277 | |
ed9a39eb | 3278 | if (!target_is_async_p ()) |
43ff13b4 | 3279 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3280 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3281 | _never_ wait for ever -> test on target_is_async_p(). | |
3282 | However, before we do that we need to ensure that the caller | |
3283 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 3284 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3285 | if (!target_is_async_p ()) |
43ff13b4 JM |
3286 | signal (SIGINT, ofunc); |
3287 | ||
3288 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3289 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
3290 | if (target_wait_loop_hook) |
3291 | (*target_wait_loop_hook) (); | |
3292 | ||
3293 | switch (buf[0]) | |
3294 | { | |
3295 | case 'E': /* Error of some sort */ | |
3296 | warning ("Remote failure reply: %s", buf); | |
3297 | continue; | |
3298 | case 'T': /* Status with PC, SP, FP, ... */ | |
3299 | { | |
3300 | int i; | |
e6cbd02a | 3301 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
43ff13b4 JM |
3302 | |
3303 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3304 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3305 | ss = signal number |
3306 | n... = register number | |
3307 | r... = register contents | |
3308 | */ | |
43ff13b4 JM |
3309 | p = &buf[3]; /* after Txx */ |
3310 | ||
3311 | while (*p) | |
3312 | { | |
3313 | unsigned char *p1; | |
3314 | char *p_temp; | |
6c3f2dbf | 3315 | int fieldsize; |
3c3bea1c | 3316 | long pnum = 0; |
43ff13b4 | 3317 | |
3c3bea1c GS |
3318 | /* If the packet contains a register number, save it in pnum |
3319 | and set p1 to point to the character following it. | |
3320 | Otherwise p1 points to p. */ | |
3321 | ||
3322 | /* If this packet is an awatch packet, don't parse the 'a' | |
3323 | as a register number. */ | |
3324 | ||
3325 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) | |
3326 | { | |
3327 | /* Read the register number. */ | |
3328 | pnum = strtol (p, &p_temp, 16); | |
3329 | p1 = (unsigned char *) p_temp; | |
3330 | } | |
3331 | else | |
3332 | p1 = p; | |
43ff13b4 | 3333 | |
c5aa993b | 3334 | if (p1 == p) /* No register number present here */ |
43ff13b4 | 3335 | { |
3c3bea1c | 3336 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 JM |
3337 | if (p1 == NULL) |
3338 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3339 | Packet: '%s'\n", | |
3340 | p, buf); | |
3c3bea1c | 3341 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3342 | { |
3343 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3344 | record_currthread (thread_num); | |
3345 | p = (unsigned char *) p_temp; | |
3346 | } | |
3c3bea1c GS |
3347 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3348 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3349 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3350 | { | |
3351 | remote_stopped_by_watchpoint_p = 1; | |
3352 | p = unpack_varlen_hex (++p1, &addr); | |
3353 | remote_watch_data_address = (CORE_ADDR)addr; | |
3354 | } | |
3355 | else | |
3356 | { | |
3357 | /* Silently skip unknown optional info. */ | |
3358 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3359 | if (p_temp) | |
3360 | p = p_temp; | |
3361 | } | |
43ff13b4 | 3362 | } |
3c3bea1c | 3363 | |
43ff13b4 JM |
3364 | else |
3365 | { | |
ad10f812 | 3366 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3367 | p = p1; |
43ff13b4 JM |
3368 | if (*p++ != ':') |
3369 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3370 | Packet: '%s'\n", | |
3371 | p, buf); | |
3372 | ||
ad10f812 | 3373 | if (reg == NULL) |
43ff13b4 JM |
3374 | warning ("Remote sent bad register number %ld: %s\n\ |
3375 | Packet: '%s'\n", | |
ad10f812 | 3376 | pnum, p, buf); |
43ff13b4 | 3377 | |
ad10f812 | 3378 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (reg->regnum)); |
6c3f2dbf | 3379 | p += 2 * fieldsize; |
ad10f812 | 3380 | if (fieldsize < REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3381 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3382 | supply_register (reg->regnum, regs); |
43ff13b4 JM |
3383 | } |
3384 | ||
3385 | if (*p++ != ';') | |
3386 | { | |
3387 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3388 | warning (" here: %s", p); |
43ff13b4 JM |
3389 | } |
3390 | } | |
3391 | } | |
3392 | /* fall through */ | |
3393 | case 'S': /* Old style status, just signal only */ | |
3394 | status->kind = TARGET_WAITKIND_STOPPED; | |
3395 | status->value.sig = (enum target_signal) | |
3396 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3397 | ||
3398 | if (buf[3] == 'p') | |
3399 | { | |
3400 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3401 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3402 | |
3403 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3404 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3405 | value_from_string ("PDEBUG-")); |
3406 | cisco_kernel_mode = 0; | |
3407 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3408 | record_currthread (thread_num); | |
3409 | } | |
3410 | else if (buf[3] == 'k') | |
3411 | { | |
3412 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3413 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3414 | |
3415 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3416 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3417 | value_from_string ("KDEBUG-")); |
3418 | cisco_kernel_mode = 1; | |
3419 | } | |
3420 | goto got_status; | |
3421 | case 'N': /* Cisco special: status and offsets */ | |
3422 | { | |
3423 | bfd_vma text_addr, data_addr, bss_addr; | |
3424 | bfd_signed_vma text_off, data_off, bss_off; | |
3425 | unsigned char *p1; | |
3426 | ||
3427 | status->kind = TARGET_WAITKIND_STOPPED; | |
3428 | status->value.sig = (enum target_signal) | |
3429 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3430 | ||
c5aa993b | 3431 | if (symfile_objfile == NULL) |
43ff13b4 JM |
3432 | { |
3433 | warning ("Relocation packet recieved with no symbol file. \ | |
3434 | Packet Dropped"); | |
3435 | goto got_status; | |
3436 | } | |
3437 | ||
3438 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3439 | * where AA is the signal number, TT is the new text | |
3440 | * address, DD * is the new data address, and BB is the | |
3441 | * new bss address. */ | |
3442 | ||
3443 | p = &buf[3]; | |
3444 | text_addr = strtoul (p, (char **) &p1, 16); | |
3445 | if (p1 == p || *p1 != ';') | |
3446 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3447 | p = p1 + 1; | |
3448 | data_addr = strtoul (p, (char **) &p1, 16); | |
3449 | if (p1 == p || *p1 != ';') | |
3450 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3451 | p = p1 + 1; | |
3452 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3453 | if (p1 == p) |
43ff13b4 JM |
3454 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3455 | ||
3456 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3457 | &text_off, &data_off, &bss_off) | |
3458 | == 0) | |
c5aa993b | 3459 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
3460 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3461 | ||
3462 | goto got_status; | |
3463 | } | |
3464 | case 'W': /* Target exited */ | |
3465 | { | |
3466 | /* The remote process exited. */ | |
3467 | status->kind = TARGET_WAITKIND_EXITED; | |
3468 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3469 | goto got_status; | |
3470 | } | |
3471 | case 'X': | |
3472 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3473 | status->value.sig = (enum target_signal) | |
3474 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3475 | kill_kludge = 1; | |
3476 | ||
3477 | goto got_status; | |
3478 | case 'O': /* Console output */ | |
3479 | remote_console_output (buf + 1); | |
c4093a6a JM |
3480 | /* Return immediately to the event loop. The event loop will |
3481 | still be waiting on the inferior afterwards. */ | |
3482 | status->kind = TARGET_WAITKIND_IGNORE; | |
3483 | goto got_status; | |
43ff13b4 JM |
3484 | case '\0': |
3485 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3486 | { | |
3487 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3488 | the remote system doesn't support it. */ |
43ff13b4 JM |
3489 | target_terminal_ours_for_output (); |
3490 | printf_filtered | |
3491 | ("Can't send signals to this remote system. %s not sent.\n", | |
3492 | target_signal_to_name (last_sent_signal)); | |
3493 | last_sent_signal = TARGET_SIGNAL_0; | |
3494 | target_terminal_inferior (); | |
3495 | ||
3496 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3497 | putpkt ((char *) buf); | |
3498 | continue; | |
3499 | } | |
3500 | /* else fallthrough */ | |
3501 | default: | |
3502 | warning ("Invalid remote reply: %s", buf); | |
3503 | continue; | |
3504 | } | |
3505 | } | |
c5aa993b | 3506 | got_status: |
43ff13b4 JM |
3507 | if (thread_num != -1) |
3508 | { | |
39f77062 | 3509 | return pid_to_ptid (thread_num); |
43ff13b4 | 3510 | } |
39f77062 | 3511 | return inferior_ptid; |
43ff13b4 JM |
3512 | } |
3513 | ||
c906108c SS |
3514 | /* Number of bytes of registers this stub implements. */ |
3515 | ||
3516 | static int register_bytes_found; | |
3517 | ||
3518 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3519 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c SS |
3520 | |
3521 | /* ARGSUSED */ | |
3522 | static void | |
ad10f812 | 3523 | remote_fetch_registers (int regnum) |
c906108c | 3524 | { |
d01949b6 AC |
3525 | struct remote_state *rs = get_remote_state (); |
3526 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3527 | int i; |
3528 | char *p; | |
ad10f812 | 3529 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3530 | |
39f77062 | 3531 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3532 | |
b323314b AC |
3533 | if (regnum >= 0) |
3534 | { | |
3535 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3536 | gdb_assert (reg != NULL); | |
3537 | if (!reg->in_g_packet) | |
3538 | internal_error (__FILE__, __LINE__, | |
3539 | "Attempt to fetch a non G-packet register when this " | |
3540 | "remote.c does not support the p-packet."); | |
3541 | } | |
3542 | ||
c906108c | 3543 | sprintf (buf, "g"); |
d01949b6 | 3544 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3545 | |
11cf8741 JM |
3546 | /* Save the size of the packet sent to us by the target. Its used |
3547 | as a heuristic when determining the max size of packets that the | |
3548 | target can safely receive. */ | |
d01949b6 AC |
3549 | if ((rs->actual_register_packet_size) == 0) |
3550 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3551 | |
3552 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3553 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3554 | |
3555 | /* We can get out of synch in various cases. If the first character | |
3556 | in the buffer is not a hex character, assume that has happened | |
3557 | and try to fetch another packet to read. */ | |
3558 | while ((buf[0] < '0' || buf[0] > '9') | |
3559 | && (buf[0] < 'a' || buf[0] > 'f') | |
3560 | && buf[0] != 'x') /* New: unavailable register value */ | |
3561 | { | |
3562 | if (remote_debug) | |
0f71a2f6 JM |
3563 | fprintf_unfiltered (gdb_stdlog, |
3564 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3565 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3566 | } |
3567 | ||
3568 | /* Reply describes registers byte by byte, each byte encoded as two | |
3569 | hex characters. Suck them all up, then supply them to the | |
3570 | register cacheing/storage mechanism. */ | |
3571 | ||
3572 | p = buf; | |
ad10f812 | 3573 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3574 | { |
3575 | if (p[0] == 0) | |
3576 | break; | |
3577 | if (p[1] == 0) | |
3578 | { | |
3579 | warning ("Remote reply is of odd length: %s", buf); | |
3580 | /* Don't change register_bytes_found in this case, and don't | |
3581 | print a second warning. */ | |
3582 | goto supply_them; | |
3583 | } | |
3584 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3585 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3586 | else |
3587 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3588 | p += 2; | |
3589 | } | |
3590 | ||
3591 | if (i != register_bytes_found) | |
3592 | { | |
3593 | register_bytes_found = i; | |
2649061d AC |
3594 | if (REGISTER_BYTES_OK_P () |
3595 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3596 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3597 | } |
c5aa993b | 3598 | |
b323314b | 3599 | supply_them: |
ad10f812 | 3600 | { |
b323314b AC |
3601 | int i; |
3602 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3603 | { |
b323314b AC |
3604 | struct packet_reg *r = &rs->regs[i]; |
3605 | if (r->in_g_packet) | |
3606 | { | |
3607 | supply_register (r->regnum, regs + r->offset); | |
3608 | if (buf[r->offset * 2] == 'x') | |
3609 | set_register_cached (i, -1); | |
3610 | } | |
ad10f812 AC |
3611 | } |
3612 | } | |
c906108c SS |
3613 | } |
3614 | ||
3615 | /* Prepare to store registers. Since we may send them all (using a | |
3616 | 'G' request), we have to read out the ones we don't want to change | |
3617 | first. */ | |
3618 | ||
c5aa993b | 3619 | static void |
fba45db2 | 3620 | remote_prepare_to_store (void) |
c906108c SS |
3621 | { |
3622 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
3623 | switch (remote_protocol_P.support) |
3624 | { | |
3625 | case PACKET_DISABLE: | |
3626 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 AC |
3627 | /* NOTE: This isn't rs->sizeof_g_packet because here, we are |
3628 | forcing the register cache to read its and not the target | |
3629 | registers. */ | |
3630 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); /* OK use. */ | |
5a2468f5 JM |
3631 | break; |
3632 | case PACKET_ENABLE: | |
3633 | break; | |
3634 | } | |
3635 | } | |
3636 | ||
ad10f812 | 3637 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
5a2468f5 JM |
3638 | packet was not recognized. */ |
3639 | ||
3640 | static int | |
ad10f812 | 3641 | store_register_using_P (int regnum) |
5a2468f5 | 3642 | { |
d01949b6 | 3643 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3644 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3645 | /* Try storing a single register. */ |
d01949b6 | 3646 | char *buf = alloca (rs->remote_packet_size); |
193cb69f | 3647 | char *regp = alloca (MAX_REGISTER_RAW_SIZE); |
5a2468f5 JM |
3648 | char *p; |
3649 | int i; | |
3650 | ||
ad10f812 | 3651 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3652 | p = buf + strlen (buf); |
ad10f812 AC |
3653 | regcache_collect (reg->regnum, regp); |
3654 | bin2hex (regp, p, REGISTER_RAW_SIZE (reg->regnum)); | |
3655 | remote_send (buf, rs->remote_packet_size); | |
5a2468f5 JM |
3656 | |
3657 | return buf[0] != '\0'; | |
c906108c SS |
3658 | } |
3659 | ||
5a2468f5 | 3660 | |
ad10f812 | 3661 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents |
7302a204 | 3662 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3663 | |
3664 | static void | |
ad10f812 | 3665 | remote_store_registers (int regnum) |
c906108c | 3666 | { |
d01949b6 | 3667 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3668 | char *buf; |
3669 | char *regs; | |
c906108c SS |
3670 | int i; |
3671 | char *p; | |
3672 | ||
39f77062 | 3673 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3674 | |
ad10f812 | 3675 | if (regnum >= 0) |
c906108c | 3676 | { |
5a2468f5 | 3677 | switch (remote_protocol_P.support) |
c906108c | 3678 | { |
5a2468f5 JM |
3679 | case PACKET_DISABLE: |
3680 | break; | |
3681 | case PACKET_ENABLE: | |
ad10f812 | 3682 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3683 | return; |
3684 | else | |
3685 | error ("Protocol error: P packet not recognized by stub"); | |
3686 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3687 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3688 | { |
3689 | /* The stub recognized the 'P' packet. Remember this. */ | |
3690 | remote_protocol_P.support = PACKET_ENABLE; | |
3691 | return; | |
3692 | } | |
3693 | else | |
3694 | { | |
3695 | /* The stub does not support the 'P' packet. Use 'G' | |
3696 | instead, and don't try using 'P' in the future (it | |
3697 | will just waste our time). */ | |
3698 | remote_protocol_P.support = PACKET_DISABLE; | |
3699 | break; | |
3700 | } | |
c906108c | 3701 | } |
c906108c SS |
3702 | } |
3703 | ||
193cb69f AC |
3704 | /* Extract all the registers in the regcache copying them into a |
3705 | local buffer. */ | |
3706 | { | |
b323314b | 3707 | int i; |
ad10f812 AC |
3708 | regs = alloca (rs->sizeof_g_packet); |
3709 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3710 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3711 | { |
b323314b AC |
3712 | struct packet_reg *r = &rs->regs[i]; |
3713 | if (r->in_g_packet) | |
3714 | regcache_collect (r->regnum, regs + r->offset); | |
193cb69f AC |
3715 | } |
3716 | } | |
c906108c SS |
3717 | |
3718 | /* Command describes registers byte by byte, | |
3719 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3720 | buf = alloca (rs->remote_packet_size); |
3721 | p = buf; | |
3722 | *p++ = 'G'; | |
c906108c | 3723 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3724 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3725 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3726 | } |
c906108c SS |
3727 | \f |
3728 | ||
3729 | /* Return the number of hex digits in num. */ | |
3730 | ||
3731 | static int | |
fba45db2 | 3732 | hexnumlen (ULONGEST num) |
c906108c SS |
3733 | { |
3734 | int i; | |
3735 | ||
3736 | for (i = 0; num != 0; i++) | |
3737 | num >>= 4; | |
3738 | ||
3739 | return max (i, 1); | |
3740 | } | |
3741 | ||
2df3850c | 3742 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3743 | |
3744 | static int | |
fba45db2 | 3745 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3746 | { |
c906108c | 3747 | int len = hexnumlen (num); |
2df3850c JM |
3748 | return hexnumnstr (buf, num, len); |
3749 | } | |
3750 | ||
c906108c | 3751 | |
2df3850c | 3752 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3753 | |
2df3850c | 3754 | static int |
fba45db2 | 3755 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3756 | { |
3757 | int i; | |
3758 | ||
3759 | buf[width] = '\0'; | |
3760 | ||
3761 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3762 | { |
c5aa993b | 3763 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3764 | num >>= 4; |
3765 | } | |
3766 | ||
2df3850c | 3767 | return width; |
c906108c SS |
3768 | } |
3769 | ||
3770 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3771 | ||
3772 | static CORE_ADDR | |
fba45db2 | 3773 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3774 | { |
3775 | if (remote_address_size > 0 | |
3776 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3777 | { | |
3778 | /* Only create a mask when that mask can safely be constructed | |
3779 | in a ULONGEST variable. */ | |
3780 | ULONGEST mask = 1; | |
3781 | mask = (mask << remote_address_size) - 1; | |
3782 | addr &= mask; | |
3783 | } | |
3784 | return addr; | |
3785 | } | |
3786 | ||
3787 | /* Determine whether the remote target supports binary downloading. | |
3788 | This is accomplished by sending a no-op memory write of zero length | |
3789 | to the target at the specified address. It does not suffice to send | |
3790 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3791 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3792 | ||
96baa820 JM |
3793 | NOTE: This can still lose if the serial line is not eight-bit |
3794 | clean. In cases like this, the user should clear "remote | |
3795 | X-packet". */ | |
3796 | ||
c906108c | 3797 | static void |
fba45db2 | 3798 | check_binary_download (CORE_ADDR addr) |
c906108c | 3799 | { |
d01949b6 | 3800 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3801 | switch (remote_protocol_binary_download.support) |
c906108c | 3802 | { |
96baa820 JM |
3803 | case PACKET_DISABLE: |
3804 | break; | |
3805 | case PACKET_ENABLE: | |
3806 | break; | |
3807 | case PACKET_SUPPORT_UNKNOWN: | |
3808 | { | |
d01949b6 | 3809 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
3810 | char *p; |
3811 | ||
3812 | p = buf; | |
3813 | *p++ = 'X'; | |
3814 | p += hexnumstr (p, (ULONGEST) addr); | |
3815 | *p++ = ','; | |
3816 | p += hexnumstr (p, (ULONGEST) 0); | |
3817 | *p++ = ':'; | |
3818 | *p = '\0'; | |
3819 | ||
3820 | putpkt_binary (buf, (int) (p - buf)); | |
d01949b6 | 3821 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3822 | |
96baa820 JM |
3823 | if (buf[0] == '\0') |
3824 | { | |
3825 | if (remote_debug) | |
3826 | fprintf_unfiltered (gdb_stdlog, | |
3827 | "binary downloading NOT suppported by target\n"); | |
3828 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3829 | } | |
3830 | else | |
3831 | { | |
3832 | if (remote_debug) | |
3833 | fprintf_unfiltered (gdb_stdlog, | |
3834 | "binary downloading suppported by target\n"); | |
3835 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3836 | } | |
3837 | break; | |
3838 | } | |
c906108c SS |
3839 | } |
3840 | } | |
3841 | ||
3842 | /* Write memory data directly to the remote machine. | |
3843 | This does not inform the data cache; the data cache uses this. | |
3844 | MEMADDR is the address in the remote memory space. | |
3845 | MYADDR is the address of the buffer in our space. | |
3846 | LEN is the number of bytes. | |
3847 | ||
917317f4 JM |
3848 | Returns number of bytes transferred, or 0 (setting errno) for |
3849 | error. Only transfer a single packet. */ | |
c906108c SS |
3850 | |
3851 | static int | |
917317f4 | 3852 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3853 | { |
917317f4 | 3854 | unsigned char *buf; |
c906108c | 3855 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3856 | unsigned char *p; |
3857 | unsigned char *plen; | |
c2d11a7d | 3858 | long sizeof_buf; |
917317f4 JM |
3859 | int plenlen; |
3860 | int todo; | |
3861 | int nr_bytes; | |
c906108c SS |
3862 | |
3863 | /* Verify that the target can support a binary download */ | |
3864 | check_binary_download (memaddr); | |
3865 | ||
917317f4 | 3866 | /* Determine the max packet size. */ |
11cf8741 | 3867 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3868 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3869 | buf = alloca (sizeof_buf); | |
c906108c | 3870 | |
7a292a7a | 3871 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3872 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3873 | ||
917317f4 JM |
3874 | /* construct "M"<memaddr>","<len>":" */ |
3875 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3876 | p = buf; | |
3877 | ||
3878 | /* Append [XM]. Compute a best guess of the number of bytes | |
3879 | actually transfered. */ | |
3880 | switch (remote_protocol_binary_download.support) | |
c906108c | 3881 | { |
917317f4 JM |
3882 | case PACKET_ENABLE: |
3883 | *p++ = 'X'; | |
3884 | /* Best guess at number of bytes that will fit. */ | |
3885 | todo = min (len, max_buf_size); | |
3886 | break; | |
3887 | case PACKET_DISABLE: | |
3888 | *p++ = 'M'; | |
3889 | /* num bytes that will fit */ | |
3890 | todo = min (len, max_buf_size / 2); | |
3891 | break; | |
3892 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3893 | internal_error (__FILE__, __LINE__, |
3894 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3895 | default: |
8e65ff28 | 3896 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 JM |
3897 | } |
3898 | ||
3899 | /* Append <memaddr> */ | |
3900 | memaddr = remote_address_masked (memaddr); | |
3901 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3902 | *p++ = ','; | |
3903 | ||
3904 | /* Append <len>. Retain the location/size of <len>. It may | |
3905 | need to be adjusted once the packet body has been created. */ | |
3906 | plen = p; | |
3907 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3908 | p += plenlen; | |
3909 | *p++ = ':'; | |
3910 | *p = '\0'; | |
3911 | ||
3912 | /* Append the packet body. */ | |
3913 | switch (remote_protocol_binary_download.support) | |
3914 | { | |
3915 | case PACKET_ENABLE: | |
3916 | /* Binary mode. Send target system values byte by byte, in | |
3917 | increasing byte addresses. Only escape certain critical | |
3918 | characters. */ | |
3919 | for (nr_bytes = 0; | |
3920 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3921 | nr_bytes++) | |
c906108c | 3922 | { |
917317f4 JM |
3923 | switch (myaddr[nr_bytes] & 0xff) |
3924 | { | |
3925 | case '$': | |
3926 | case '#': | |
3927 | case 0x7d: | |
3928 | /* These must be escaped */ | |
3929 | *p++ = 0x7d; | |
3930 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3931 | break; | |
3932 | default: | |
3933 | *p++ = myaddr[nr_bytes] & 0xff; | |
3934 | break; | |
3935 | } | |
c906108c | 3936 | } |
917317f4 | 3937 | if (nr_bytes < todo) |
c906108c | 3938 | { |
917317f4 JM |
3939 | /* Escape chars have filled up the buffer prematurely, |
3940 | and we have actually sent fewer bytes than planned. | |
3941 | Fix-up the length field of the packet. Use the same | |
3942 | number of characters as before. */ | |
3943 | ||
3944 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3945 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3946 | } |
917317f4 JM |
3947 | break; |
3948 | case PACKET_DISABLE: | |
3949 | /* Normal mode: Send target system values byte by byte, in | |
3950 | increasing byte addresses. Each byte is encoded as a two hex | |
3951 | value. */ | |
2644f393 | 3952 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3953 | p += 2 * nr_bytes; |
917317f4 JM |
3954 | break; |
3955 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3956 | internal_error (__FILE__, __LINE__, |
3957 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3958 | default: |
8e65ff28 | 3959 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3960 | } |
917317f4 JM |
3961 | |
3962 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3963 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3964 | |
3965 | if (buf[0] == 'E') | |
3966 | { | |
3967 | /* There is no correspondance between what the remote protocol | |
3968 | uses for errors and errno codes. We would like a cleaner way | |
3969 | of representing errors (big enough to include errno codes, | |
3970 | bfd_error codes, and others). But for now just return EIO. */ | |
3971 | errno = EIO; | |
3972 | return 0; | |
3973 | } | |
3974 | ||
3975 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3976 | bytes than we'd planned. */ | |
3977 | return nr_bytes; | |
c906108c SS |
3978 | } |
3979 | ||
3980 | /* Read memory data directly from the remote machine. | |
3981 | This does not use the data cache; the data cache uses this. | |
3982 | MEMADDR is the address in the remote memory space. | |
3983 | MYADDR is the address of the buffer in our space. | |
3984 | LEN is the number of bytes. | |
3985 | ||
3986 | Returns number of bytes transferred, or 0 for error. */ | |
3987 | ||
917317f4 JM |
3988 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3989 | remote targets) shouldn't attempt to read the entire buffer. | |
3990 | Instead it should read a single packet worth of data and then | |
3991 | return the byte size of that packet to the caller. The caller (its | |
3992 | caller and its callers caller ;-) already contains code for | |
3993 | handling partial reads. */ | |
3994 | ||
c906108c | 3995 | static int |
fba45db2 | 3996 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3997 | { |
11cf8741 | 3998 | char *buf; |
c906108c | 3999 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 4000 | long sizeof_buf; |
c906108c SS |
4001 | int origlen; |
4002 | ||
11cf8741 JM |
4003 | /* Create a buffer big enough for this packet. */ |
4004 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
4005 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
4006 | buf = alloca (sizeof_buf); | |
c906108c SS |
4007 | |
4008 | origlen = len; | |
4009 | while (len > 0) | |
4010 | { | |
c906108c SS |
4011 | char *p; |
4012 | int todo; | |
4013 | int i; | |
4014 | ||
c5aa993b | 4015 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4016 | |
4017 | /* construct "m"<memaddr>","<len>" */ | |
4018 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
4019 | memaddr = remote_address_masked (memaddr); | |
4020 | p = buf; | |
4021 | *p++ = 'm'; | |
4022 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4023 | *p++ = ','; | |
4024 | p += hexnumstr (p, (ULONGEST) todo); | |
4025 | *p = '\0'; | |
4026 | ||
4027 | putpkt (buf); | |
c2d11a7d | 4028 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4029 | |
66504d44 MS |
4030 | if (buf[0] == 'E' |
4031 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
4032 | && buf[3] == '\0') | |
c906108c SS |
4033 | { |
4034 | /* There is no correspondance between what the remote protocol uses | |
4035 | for errors and errno codes. We would like a cleaner way of | |
4036 | representing errors (big enough to include errno codes, bfd_error | |
4037 | codes, and others). But for now just return EIO. */ | |
4038 | errno = EIO; | |
4039 | return 0; | |
4040 | } | |
4041 | ||
c5aa993b JM |
4042 | /* Reply describes memory byte by byte, |
4043 | each byte encoded as two hex characters. */ | |
c906108c SS |
4044 | |
4045 | p = buf; | |
30559e10 | 4046 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4047 | { |
30559e10 MS |
4048 | /* Reply is short. This means that we were able to read |
4049 | only part of what we wanted to. */ | |
4050 | return i + (origlen - len); | |
c906108c SS |
4051 | } |
4052 | myaddr += todo; | |
4053 | memaddr += todo; | |
4054 | len -= todo; | |
4055 | } | |
4056 | return origlen; | |
4057 | } | |
4058 | \f | |
4059 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
4060 | transferring to or from debugger address BUFFER. Write to inferior if |
4061 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 4062 | for error. TARGET is unused. */ |
392a587b | 4063 | |
c906108c SS |
4064 | /* ARGSUSED */ |
4065 | static int | |
c338868a | 4066 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 4067 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4068 | struct target_ops *target) |
c906108c | 4069 | { |
392a587b JM |
4070 | CORE_ADDR targ_addr; |
4071 | int targ_len; | |
4930751a C |
4072 | int res; |
4073 | ||
392a587b JM |
4074 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); |
4075 | if (targ_len <= 0) | |
c906108c | 4076 | return 0; |
c906108c | 4077 | |
4930751a C |
4078 | if (should_write) |
4079 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
4080 | else | |
4081 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
4082 | ||
4083 | return res; | |
c906108c SS |
4084 | } |
4085 | ||
c5aa993b | 4086 | |
c906108c SS |
4087 | #if 0 |
4088 | /* Enable after 4.12. */ | |
4089 | ||
4090 | void | |
c338868a KB |
4091 | remote_search (int len, char *data, char *mask, CORE_ADDR startaddr, |
4092 | int increment, CORE_ADDR lorange, CORE_ADDR hirange, | |
4093 | CORE_ADDR *addr_found, char *data_found) | |
c906108c SS |
4094 | { |
4095 | if (increment == -4 && len == 4) | |
4096 | { | |
4097 | long mask_long, data_long; | |
4098 | long data_found_long; | |
4099 | CORE_ADDR addr_we_found; | |
d01949b6 | 4100 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4101 | long returned_long[2]; |
4102 | char *p; | |
4103 | ||
4104 | mask_long = extract_unsigned_integer (mask, len); | |
4105 | data_long = extract_unsigned_integer (data, len); | |
4106 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
4107 | putpkt (buf); | |
d01949b6 | 4108 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
4109 | if (buf[0] == '\0') |
4110 | { | |
4111 | /* The stub doesn't support the 't' request. We might want to | |
4112 | remember this fact, but on the other hand the stub could be | |
4113 | switched on us. Maybe we should remember it only until | |
4114 | the next "target remote". */ | |
4115 | generic_search (len, data, mask, startaddr, increment, lorange, | |
4116 | hirange, addr_found, data_found); | |
4117 | return; | |
4118 | } | |
4119 | ||
4120 | if (buf[0] == 'E') | |
4121 | /* There is no correspondance between what the remote protocol uses | |
4122 | for errors and errno codes. We would like a cleaner way of | |
4123 | representing errors (big enough to include errno codes, bfd_error | |
4124 | codes, and others). But for now just use EIO. */ | |
4125 | memory_error (EIO, startaddr); | |
4126 | p = buf; | |
4127 | addr_we_found = 0; | |
4128 | while (*p != '\0' && *p != ',') | |
4129 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
4130 | if (*p == '\0') | |
4131 | error ("Protocol error: short return for search"); | |
4132 | ||
4133 | data_found_long = 0; | |
4134 | while (*p != '\0' && *p != ',') | |
4135 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
4136 | /* Ignore anything after this comma, for future extensions. */ | |
4137 | ||
4138 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
4139 | { | |
4140 | *addr_found = 0; | |
4141 | return; | |
4142 | } | |
4143 | ||
4144 | *addr_found = addr_we_found; | |
4145 | *data_found = store_unsigned_integer (data_we_found, len); | |
4146 | return; | |
4147 | } | |
4148 | generic_search (len, data, mask, startaddr, increment, lorange, | |
4149 | hirange, addr_found, data_found); | |
4150 | } | |
4151 | #endif /* 0 */ | |
4152 | \f | |
4153 | static void | |
fba45db2 | 4154 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4155 | { |
4156 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4157 | } | |
4158 | \f | |
4159 | /* Stuff for dealing with the packets which are part of this protocol. | |
4160 | See comment at top of file for details. */ | |
4161 | ||
4162 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
4163 | ||
4164 | static int | |
fba45db2 | 4165 | readchar (int timeout) |
c906108c SS |
4166 | { |
4167 | int ch; | |
4168 | ||
2cd58942 | 4169 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4170 | |
2acceee2 JM |
4171 | if (ch >= 0) |
4172 | return (ch & 0x7f); | |
4173 | ||
4174 | switch ((enum serial_rc) ch) | |
c906108c SS |
4175 | { |
4176 | case SERIAL_EOF: | |
2acceee2 | 4177 | target_mourn_inferior (); |
c906108c | 4178 | error ("Remote connection closed"); |
2acceee2 | 4179 | /* no return */ |
c906108c SS |
4180 | case SERIAL_ERROR: |
4181 | perror_with_name ("Remote communication error"); | |
2acceee2 | 4182 | /* no return */ |
c906108c | 4183 | case SERIAL_TIMEOUT: |
2acceee2 | 4184 | break; |
c906108c | 4185 | } |
2acceee2 | 4186 | return ch; |
c906108c SS |
4187 | } |
4188 | ||
4189 | /* Send the command in BUF to the remote machine, and read the reply | |
4190 | into BUF. Report an error if we get an error reply. */ | |
4191 | ||
4192 | static void | |
c2d11a7d JM |
4193 | remote_send (char *buf, |
4194 | long sizeof_buf) | |
c906108c SS |
4195 | { |
4196 | putpkt (buf); | |
c2d11a7d | 4197 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
4198 | |
4199 | if (buf[0] == 'E') | |
4200 | error ("Remote failure reply: %s", buf); | |
4201 | } | |
4202 | ||
4203 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4204 | string notation. */ | |
4205 | ||
4206 | static void | |
fba45db2 | 4207 | print_packet (char *buf) |
c906108c SS |
4208 | { |
4209 | puts_filtered ("\""); | |
43e526b9 | 4210 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4211 | puts_filtered ("\""); |
4212 | } | |
4213 | ||
4214 | int | |
fba45db2 | 4215 | putpkt (char *buf) |
c906108c SS |
4216 | { |
4217 | return putpkt_binary (buf, strlen (buf)); | |
4218 | } | |
4219 | ||
4220 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 4221 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
4222 | to account for the $, # and checksum, and for a possible /0 if we are |
4223 | debugging (remote_debug) and want to print the sent packet as a string */ | |
4224 | ||
4225 | static int | |
fba45db2 | 4226 | putpkt_binary (char *buf, int cnt) |
c906108c | 4227 | { |
d01949b6 | 4228 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4229 | int i; |
4230 | unsigned char csum = 0; | |
11cf8741 | 4231 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 4232 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 4233 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 4234 | |
c906108c SS |
4235 | int ch; |
4236 | int tcount = 0; | |
4237 | char *p; | |
4238 | ||
4239 | /* Copy the packet into buffer BUF2, encapsulating it | |
4240 | and giving it a checksum. */ | |
4241 | ||
c906108c SS |
4242 | p = buf2; |
4243 | *p++ = '$'; | |
4244 | ||
4245 | for (i = 0; i < cnt; i++) | |
4246 | { | |
4247 | csum += buf[i]; | |
4248 | *p++ = buf[i]; | |
4249 | } | |
4250 | *p++ = '#'; | |
4251 | *p++ = tohex ((csum >> 4) & 0xf); | |
4252 | *p++ = tohex (csum & 0xf); | |
4253 | ||
4254 | /* Send it over and over until we get a positive ack. */ | |
4255 | ||
4256 | while (1) | |
4257 | { | |
4258 | int started_error_output = 0; | |
4259 | ||
4260 | if (remote_debug) | |
4261 | { | |
4262 | *p = '\0'; | |
43e526b9 JM |
4263 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4264 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4265 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4266 | gdb_flush (gdb_stdlog); |
c906108c | 4267 | } |
2cd58942 | 4268 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
4269 | perror_with_name ("putpkt: write failed"); |
4270 | ||
4271 | /* read until either a timeout occurs (-2) or '+' is read */ | |
4272 | while (1) | |
4273 | { | |
4274 | ch = readchar (remote_timeout); | |
4275 | ||
c5aa993b | 4276 | if (remote_debug) |
c906108c SS |
4277 | { |
4278 | switch (ch) | |
4279 | { | |
4280 | case '+': | |
1216fa2c | 4281 | case '-': |
c906108c SS |
4282 | case SERIAL_TIMEOUT: |
4283 | case '$': | |
4284 | if (started_error_output) | |
4285 | { | |
4286 | putchar_unfiltered ('\n'); | |
4287 | started_error_output = 0; | |
4288 | } | |
4289 | } | |
4290 | } | |
4291 | ||
4292 | switch (ch) | |
4293 | { | |
4294 | case '+': | |
4295 | if (remote_debug) | |
0f71a2f6 | 4296 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4297 | return 1; |
1216fa2c AC |
4298 | case '-': |
4299 | if (remote_debug) | |
4300 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4301 | case SERIAL_TIMEOUT: |
c5aa993b | 4302 | tcount++; |
c906108c SS |
4303 | if (tcount > 3) |
4304 | return 0; | |
4305 | break; /* Retransmit buffer */ | |
4306 | case '$': | |
4307 | { | |
40e3f985 FN |
4308 | if (remote_debug) |
4309 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
4310 | /* It's probably an old response, and we're out of sync. |
4311 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 4312 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 4313 | continue; /* Now, go look for + */ |
c906108c SS |
4314 | } |
4315 | default: | |
4316 | if (remote_debug) | |
4317 | { | |
4318 | if (!started_error_output) | |
4319 | { | |
4320 | started_error_output = 1; | |
0f71a2f6 | 4321 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4322 | } |
0f71a2f6 | 4323 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4324 | } |
4325 | continue; | |
4326 | } | |
4327 | break; /* Here to retransmit */ | |
4328 | } | |
4329 | ||
4330 | #if 0 | |
4331 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4332 | able to get out next time we call QUIT, without anything as |
4333 | violent as interrupt_query. If we want to provide a way out of | |
4334 | here without getting to the next QUIT, it should be based on | |
4335 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4336 | if (quit_flag) |
4337 | { | |
4338 | quit_flag = 0; | |
4339 | interrupt_query (); | |
4340 | } | |
4341 | #endif | |
4342 | } | |
4343 | } | |
4344 | ||
0f71a2f6 JM |
4345 | static int remote_cisco_mode; |
4346 | ||
c906108c SS |
4347 | /* Come here after finding the start of the frame. Collect the rest |
4348 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4349 | compression. No more than sizeof_buf-1 characters are read so that |
4350 | the buffer can be NUL terminated. | |
c906108c | 4351 | |
c2d11a7d JM |
4352 | Returns -1 on error, number of characters in buffer (ignoring the |
4353 | trailing NULL) on success. (could be extended to return one of the | |
4354 | SERIAL status indications). */ | |
4355 | ||
4356 | static long | |
4357 | read_frame (char *buf, | |
4358 | long sizeof_buf) | |
c906108c SS |
4359 | { |
4360 | unsigned char csum; | |
c2d11a7d | 4361 | long bc; |
c906108c SS |
4362 | int c; |
4363 | ||
4364 | csum = 0; | |
c2d11a7d | 4365 | bc = 0; |
c906108c SS |
4366 | |
4367 | while (1) | |
4368 | { | |
c2d11a7d | 4369 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4370 | c = readchar (remote_timeout); |
c906108c SS |
4371 | switch (c) |
4372 | { | |
4373 | case SERIAL_TIMEOUT: | |
4374 | if (remote_debug) | |
0f71a2f6 | 4375 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4376 | return -1; |
c906108c SS |
4377 | case '$': |
4378 | if (remote_debug) | |
0f71a2f6 JM |
4379 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4380 | gdb_stdlog); | |
c2d11a7d | 4381 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4382 | case '#': |
4383 | { | |
4384 | unsigned char pktcsum; | |
e1b09194 AC |
4385 | int check_0 = 0; |
4386 | int check_1 = 0; | |
c906108c | 4387 | |
c2d11a7d | 4388 | buf[bc] = '\0'; |
c906108c | 4389 | |
e1b09194 AC |
4390 | check_0 = readchar (remote_timeout); |
4391 | if (check_0 >= 0) | |
4392 | check_1 = readchar (remote_timeout); | |
4393 | ||
4394 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
4395 | { | |
4396 | if (remote_debug) | |
4397 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4398 | return -1; | |
4399 | } | |
4400 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4401 | { |
4402 | if (remote_debug) | |
4403 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4404 | return -1; | |
4405 | } | |
c906108c | 4406 | |
e1b09194 | 4407 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4408 | if (csum == pktcsum) |
c2d11a7d | 4409 | return bc; |
c906108c | 4410 | |
c5aa993b | 4411 | if (remote_debug) |
c906108c | 4412 | { |
0f71a2f6 | 4413 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4414 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4415 | pktcsum, csum); |
4416 | fputs_filtered (buf, gdb_stdlog); | |
4417 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4418 | } |
c2d11a7d JM |
4419 | /* Number of characters in buffer ignoring trailing |
4420 | NUL. */ | |
4421 | return -1; | |
c906108c SS |
4422 | } |
4423 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4424 | { |
4425 | int repeat; | |
4426 | csum += c; | |
c906108c | 4427 | |
c2c6d25f JM |
4428 | if (remote_cisco_mode == 0) |
4429 | { | |
4430 | c = readchar (remote_timeout); | |
4431 | csum += c; | |
4432 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
4433 | } | |
4434 | else | |
4435 | { | |
4436 | /* Cisco's run-length encoding variant uses two | |
4437 | hex chars to represent the repeat count. */ | |
4438 | ||
4439 | c = readchar (remote_timeout); | |
4440 | csum += c; | |
4441 | repeat = fromhex (c) << 4; | |
4442 | c = readchar (remote_timeout); | |
4443 | csum += c; | |
4444 | repeat += fromhex (c); | |
4445 | } | |
c906108c | 4446 | |
c2d11a7d JM |
4447 | /* The character before ``*'' is repeated. */ |
4448 | ||
c2c6d25f | 4449 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4450 | && bc > 0 |
fb6e5c55 | 4451 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4452 | { |
c2d11a7d JM |
4453 | memset (&buf[bc], buf[bc - 1], repeat); |
4454 | bc += repeat; | |
c2c6d25f JM |
4455 | continue; |
4456 | } | |
4457 | ||
c2d11a7d | 4458 | buf[bc] = '\0'; |
c2c6d25f JM |
4459 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4460 | puts_filtered (buf); | |
4461 | puts_filtered ("\n"); | |
c2d11a7d | 4462 | return -1; |
c2c6d25f | 4463 | } |
c906108c | 4464 | default: |
c2d11a7d | 4465 | if (bc < sizeof_buf - 1) |
c906108c | 4466 | { |
c2d11a7d | 4467 | buf[bc++] = c; |
c906108c SS |
4468 | csum += c; |
4469 | continue; | |
4470 | } | |
4471 | ||
c2d11a7d | 4472 | buf[bc] = '\0'; |
c906108c SS |
4473 | puts_filtered ("Remote packet too long: "); |
4474 | puts_filtered (buf); | |
4475 | puts_filtered ("\n"); | |
4476 | ||
c2d11a7d | 4477 | return -1; |
c906108c SS |
4478 | } |
4479 | } | |
4480 | } | |
4481 | ||
4482 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4483 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4484 | this is used (in synchronous mode) to wait for a target that is is | |
4485 | executing user code to stop. */ | |
d9fcf2fb JM |
4486 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4487 | don't have to change all the calls to getpkt to deal with the | |
4488 | return value, because at the moment I don't know what the right | |
4489 | thing to do it for those. */ | |
c906108c | 4490 | void |
c2d11a7d JM |
4491 | getpkt (char *buf, |
4492 | long sizeof_buf, | |
4493 | int forever) | |
d9fcf2fb JM |
4494 | { |
4495 | int timed_out; | |
4496 | ||
4497 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4498 | } | |
4499 | ||
4500 | ||
4501 | /* Read a packet from the remote machine, with error checking, and | |
4502 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4503 | this is used (in synchronous mode) to wait for a target that is is | |
4504 | executing user code to stop. If FOREVER == 0, this function is | |
4505 | allowed to time out gracefully and return an indication of this to | |
4506 | the caller. */ | |
3172dc30 | 4507 | static int |
d9fcf2fb JM |
4508 | getpkt_sane (char *buf, |
4509 | long sizeof_buf, | |
4510 | int forever) | |
c906108c SS |
4511 | { |
4512 | int c; | |
4513 | int tries; | |
4514 | int timeout; | |
4515 | int val; | |
4516 | ||
c5aa993b | 4517 | strcpy (buf, "timeout"); |
c906108c SS |
4518 | |
4519 | if (forever) | |
4520 | { | |
c906108c | 4521 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4522 | } |
4523 | ||
4524 | else | |
4525 | timeout = remote_timeout; | |
4526 | ||
4527 | #define MAX_TRIES 3 | |
4528 | ||
4529 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4530 | { | |
4531 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4532 | continuously, but if it pauses, we'll get a zero from readchar |
4533 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4534 | |
4535 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4536 | After that, we expect characters to arrive at a brisk pace. They |
4537 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4538 | |
4539 | do | |
4540 | { | |
4541 | c = readchar (timeout); | |
4542 | ||
4543 | if (c == SERIAL_TIMEOUT) | |
4544 | { | |
2acceee2 | 4545 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4546 | { |
2acceee2 | 4547 | QUIT; |
c906108c SS |
4548 | target_mourn_inferior (); |
4549 | error ("Watchdog has expired. Target detached.\n"); | |
4550 | } | |
c906108c | 4551 | if (remote_debug) |
0f71a2f6 | 4552 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4553 | goto retry; |
4554 | } | |
4555 | } | |
4556 | while (c != '$'); | |
4557 | ||
4558 | /* We've found the start of a packet, now collect the data. */ | |
4559 | ||
c2d11a7d | 4560 | val = read_frame (buf, sizeof_buf); |
c906108c | 4561 | |
c2d11a7d | 4562 | if (val >= 0) |
c906108c SS |
4563 | { |
4564 | if (remote_debug) | |
43e526b9 JM |
4565 | { |
4566 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4567 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4568 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4569 | } | |
2cd58942 | 4570 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4571 | return 0; |
c906108c SS |
4572 | } |
4573 | ||
4574 | /* Try the whole thing again. */ | |
4575 | retry: | |
2cd58942 | 4576 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4577 | } |
4578 | ||
4579 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4580 | ||
4581 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4582 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4583 | return 1; |
c906108c SS |
4584 | } |
4585 | \f | |
4586 | static void | |
fba45db2 | 4587 | remote_kill (void) |
c906108c SS |
4588 | { |
4589 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4590 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4591 | if (kill_kludge) | |
4592 | { | |
4593 | kill_kludge = 0; | |
4594 | target_mourn_inferior (); | |
4595 | return; | |
4596 | } | |
4597 | ||
4598 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4599 | speaking terms with the remote system. */ | |
c5aa993b | 4600 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4601 | |
4602 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4603 | we do or not. For the existing stubs, kill is a noop. */ | |
4604 | target_mourn_inferior (); | |
4605 | } | |
4606 | ||
43ff13b4 JM |
4607 | /* Async version of remote_kill. */ |
4608 | static void | |
fba45db2 | 4609 | remote_async_kill (void) |
43ff13b4 JM |
4610 | { |
4611 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4612 | if (target_is_async_p ()) |
2cd58942 | 4613 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4614 | |
4615 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4616 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4617 | if (kill_kludge) | |
4618 | { | |
4619 | kill_kludge = 0; | |
4620 | target_mourn_inferior (); | |
4621 | return; | |
4622 | } | |
4623 | ||
4624 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4625 | speaking terms with the remote system. */ | |
c5aa993b | 4626 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4627 | |
4628 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4629 | we do or not. For the existing stubs, kill is a noop. */ | |
4630 | target_mourn_inferior (); | |
4631 | } | |
4632 | ||
c906108c | 4633 | static void |
fba45db2 | 4634 | remote_mourn (void) |
c906108c SS |
4635 | { |
4636 | remote_mourn_1 (&remote_ops); | |
4637 | } | |
4638 | ||
53a5351d | 4639 | static void |
fba45db2 | 4640 | remote_async_mourn (void) |
53a5351d JM |
4641 | { |
4642 | remote_mourn_1 (&remote_async_ops); | |
4643 | } | |
4644 | ||
c906108c | 4645 | static void |
fba45db2 | 4646 | extended_remote_mourn (void) |
c906108c SS |
4647 | { |
4648 | /* We do _not_ want to mourn the target like this; this will | |
4649 | remove the extended remote target from the target stack, | |
4650 | and the next time the user says "run" it'll fail. | |
4651 | ||
4652 | FIXME: What is the right thing to do here? */ | |
4653 | #if 0 | |
4654 | remote_mourn_1 (&extended_remote_ops); | |
4655 | #endif | |
4656 | } | |
4657 | ||
4658 | /* Worker function for remote_mourn. */ | |
4659 | static void | |
fba45db2 | 4660 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4661 | { |
4662 | unpush_target (target); | |
4663 | generic_mourn_inferior (); | |
4664 | } | |
4665 | ||
4666 | /* In the extended protocol we want to be able to do things like | |
4667 | "run" and have them basically work as expected. So we need | |
4668 | a special create_inferior function. | |
4669 | ||
4670 | FIXME: One day add support for changing the exec file | |
4671 | we're debugging, arguments and an environment. */ | |
4672 | ||
4673 | static void | |
fba45db2 | 4674 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4675 | { |
4676 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4677 | the remote server. */ | |
4678 | remove_breakpoints (); | |
4679 | ||
4680 | /* Now restart the remote server. */ | |
4681 | extended_remote_restart (); | |
4682 | ||
4683 | /* Now put the breakpoints back in. This way we're safe if the | |
4684 | restart function works via a unix fork on the remote side. */ | |
4685 | insert_breakpoints (); | |
4686 | ||
4687 | /* Clean up from the last time we were running. */ | |
4688 | clear_proceed_status (); | |
4689 | ||
4690 | /* Let the remote process run. */ | |
4691 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4692 | } | |
4693 | ||
43ff13b4 JM |
4694 | /* Async version of extended_remote_create_inferior. */ |
4695 | static void | |
fba45db2 | 4696 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4697 | { |
4698 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4699 | the remote server. */ | |
4700 | remove_breakpoints (); | |
4701 | ||
4702 | /* If running asynchronously, register the target file descriptor | |
4703 | with the event loop. */ | |
2acceee2 JM |
4704 | if (event_loop_p && target_can_async_p ()) |
4705 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4706 | |
4707 | /* Now restart the remote server. */ | |
4708 | extended_remote_restart (); | |
4709 | ||
4710 | /* Now put the breakpoints back in. This way we're safe if the | |
4711 | restart function works via a unix fork on the remote side. */ | |
4712 | insert_breakpoints (); | |
4713 | ||
4714 | /* Clean up from the last time we were running. */ | |
4715 | clear_proceed_status (); | |
4716 | ||
4717 | /* Let the remote process run. */ | |
4718 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4719 | } | |
c906108c | 4720 | \f |
c5aa993b | 4721 | |
c906108c SS |
4722 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4723 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4724 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4725 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4726 | the standard routines that are in mem-break.c. */ | |
4727 | ||
4728 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4729 | the choice of breakpoint instruction affects target program design and | |
4730 | vice versa, and by making it user-tweakable, the special code here | |
4731 | goes away and we need fewer special GDB configurations. */ | |
4732 | ||
4733 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4734 | #define REMOTE_BREAKPOINT | |
4735 | #endif | |
4736 | ||
4737 | #ifdef REMOTE_BREAKPOINT | |
4738 | ||
4739 | /* If the target isn't bi-endian, just pretend it is. */ | |
4740 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4741 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4742 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4743 | #endif | |
4744 | ||
4745 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4746 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4747 | ||
4748 | #endif /* REMOTE_BREAKPOINT */ | |
4749 | ||
4750 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4751 | support. We read the contents of the target location and stash it, | |
4752 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4753 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4754 | memory allocated for saving the target contents. It is guaranteed | |
4755 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4756 | is accomplished via BREAKPOINT_MAX). */ | |
4757 | ||
4758 | static int | |
fba45db2 | 4759 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4760 | { |
d01949b6 | 4761 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4762 | #ifdef REMOTE_BREAKPOINT |
4763 | int val; | |
96baa820 JM |
4764 | #endif |
4765 | int bp_size; | |
4766 | ||
d471ea57 AC |
4767 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4768 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4769 | fails, and the user has explicitly requested the Z support then | |
4770 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4771 | |
d471ea57 | 4772 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4773 | { |
d01949b6 | 4774 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4775 | char *p = buf; |
96baa820 | 4776 | |
0caabb7e | 4777 | addr = remote_address_masked (addr); |
96baa820 JM |
4778 | *(p++) = 'Z'; |
4779 | *(p++) = '0'; | |
4780 | *(p++) = ','; | |
0caabb7e AC |
4781 | p += hexnumstr (p, (ULONGEST) addr); |
4782 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4783 | sprintf (p, ",%d", bp_size); |
4784 | ||
4785 | putpkt (buf); | |
d01949b6 | 4786 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4787 | |
d471ea57 | 4788 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4789 | { |
d471ea57 AC |
4790 | case PACKET_ERROR: |
4791 | return -1; | |
4792 | case PACKET_OK: | |
4793 | return 0; | |
4794 | case PACKET_UNKNOWN: | |
4795 | break; | |
96baa820 JM |
4796 | } |
4797 | } | |
c906108c | 4798 | |
96baa820 | 4799 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4800 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4801 | ||
4802 | if (val == 0) | |
4803 | { | |
d7449b42 | 4804 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4805 | val = target_write_memory (addr, (char *) big_break_insn, |
4806 | sizeof big_break_insn); | |
4807 | else | |
4808 | val = target_write_memory (addr, (char *) little_break_insn, | |
4809 | sizeof little_break_insn); | |
4810 | } | |
4811 | ||
4812 | return val; | |
4813 | #else | |
4814 | return memory_insert_breakpoint (addr, contents_cache); | |
4815 | #endif /* REMOTE_BREAKPOINT */ | |
4816 | } | |
4817 | ||
4818 | static int | |
fba45db2 | 4819 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4820 | { |
d01949b6 | 4821 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4822 | int bp_size; |
4823 | ||
d471ea57 | 4824 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4825 | { |
d01949b6 | 4826 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4827 | char *p = buf; |
96baa820 JM |
4828 | |
4829 | *(p++) = 'z'; | |
4830 | *(p++) = '0'; | |
4831 | *(p++) = ','; | |
4832 | ||
0caabb7e AC |
4833 | addr = remote_address_masked (addr); |
4834 | p += hexnumstr (p, (ULONGEST) addr); | |
4835 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4836 | sprintf (p, ",%d", bp_size); |
4837 | ||
4838 | putpkt (buf); | |
d01949b6 | 4839 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4840 | |
4841 | return (buf[0] == 'E'); | |
4842 | } | |
4843 | ||
c906108c SS |
4844 | #ifdef REMOTE_BREAKPOINT |
4845 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4846 | #else | |
4847 | return memory_remove_breakpoint (addr, contents_cache); | |
4848 | #endif /* REMOTE_BREAKPOINT */ | |
4849 | } | |
4850 | ||
d471ea57 AC |
4851 | static int |
4852 | watchpoint_to_Z_packet (int type) | |
4853 | { | |
4854 | switch (type) | |
4855 | { | |
4856 | case hw_write: | |
4857 | return 2; | |
4858 | break; | |
4859 | case hw_read: | |
4860 | return 3; | |
4861 | break; | |
4862 | case hw_access: | |
4863 | return 4; | |
4864 | break; | |
4865 | default: | |
8e65ff28 AC |
4866 | internal_error (__FILE__, __LINE__, |
4867 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4868 | } |
4869 | } | |
4870 | ||
3c3bea1c | 4871 | static int |
fba45db2 | 4872 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4873 | { |
d01949b6 AC |
4874 | struct remote_state *rs = get_remote_state (); |
4875 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4876 | char *p; |
d471ea57 | 4877 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4878 | |
d471ea57 AC |
4879 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4880 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4881 | remote_protocol_Z[packet].name, | |
4882 | remote_protocol_Z[packet].title); | |
96baa820 | 4883 | |
d471ea57 | 4884 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4885 | p = strchr (buf, '\0'); |
4886 | addr = remote_address_masked (addr); | |
4887 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4888 | sprintf (p, ",%x", len); |
96baa820 JM |
4889 | |
4890 | putpkt (buf); | |
d01949b6 | 4891 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4892 | |
d471ea57 AC |
4893 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4894 | { | |
4895 | case PACKET_ERROR: | |
4896 | case PACKET_UNKNOWN: | |
4897 | return -1; | |
4898 | case PACKET_OK: | |
4899 | return 0; | |
4900 | } | |
8e65ff28 AC |
4901 | internal_error (__FILE__, __LINE__, |
4902 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4903 | } |
4904 | ||
d471ea57 | 4905 | |
3c3bea1c | 4906 | static int |
fba45db2 | 4907 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4908 | { |
d01949b6 AC |
4909 | struct remote_state *rs = get_remote_state (); |
4910 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4911 | char *p; |
d471ea57 AC |
4912 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4913 | ||
4914 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4915 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4916 | remote_protocol_Z[packet].name, | |
4917 | remote_protocol_Z[packet].title); | |
96baa820 | 4918 | |
d471ea57 | 4919 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4920 | p = strchr (buf, '\0'); |
4921 | addr = remote_address_masked (addr); | |
4922 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4923 | sprintf (p, ",%x", len); |
96baa820 | 4924 | putpkt (buf); |
d01949b6 | 4925 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4926 | |
d471ea57 AC |
4927 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4928 | { | |
4929 | case PACKET_ERROR: | |
4930 | case PACKET_UNKNOWN: | |
4931 | return -1; | |
4932 | case PACKET_OK: | |
4933 | return 0; | |
4934 | } | |
8e65ff28 AC |
4935 | internal_error (__FILE__, __LINE__, |
4936 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4937 | } |
4938 | ||
3c3bea1c GS |
4939 | |
4940 | int remote_hw_watchpoint_limit = 0; | |
4941 | int remote_hw_breakpoint_limit = 0; | |
d471ea57 | 4942 | |
96baa820 | 4943 | int |
3c3bea1c | 4944 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4945 | { |
3c3bea1c GS |
4946 | if (type == bp_hardware_breakpoint) |
4947 | { | |
4948 | if (remote_hw_breakpoint_limit == 0) | |
4949 | return 0; | |
4950 | else if (cnt <= remote_hw_breakpoint_limit) | |
4951 | return 1; | |
4952 | } | |
4953 | else | |
4954 | { | |
4955 | if (remote_hw_watchpoint_limit == 0) | |
4956 | return 0; | |
4957 | else if (ot) | |
4958 | return -1; | |
4959 | else if (cnt <= remote_hw_watchpoint_limit) | |
4960 | return 1; | |
4961 | } | |
4962 | return -1; | |
4963 | } | |
4964 | ||
4965 | int | |
4966 | remote_stopped_by_watchpoint (void) | |
4967 | { | |
4968 | return remote_stopped_by_watchpoint_p; | |
4969 | } | |
4970 | ||
4971 | CORE_ADDR | |
4972 | remote_stopped_data_address (void) | |
4973 | { | |
4974 | if (remote_stopped_by_watchpoint ()) | |
4975 | return remote_watch_data_address; | |
4976 | return (CORE_ADDR)0; | |
4977 | } | |
4978 | ||
4979 | ||
4980 | static int | |
4981 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4982 | { | |
4983 | int len = 0; | |
d01949b6 AC |
4984 | struct remote_state *rs = get_remote_state (); |
4985 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4986 | char *p = buf; |
96baa820 | 4987 | |
3c3bea1c GS |
4988 | /* The length field should be set to soething so that the packet is |
4989 | well formed. */ | |
4990 | ||
4991 | len = strlen (shadow); | |
4992 | len = len ? len : 1; | |
d471ea57 AC |
4993 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4994 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4995 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4996 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4997 | ||
96baa820 JM |
4998 | *(p++) = 'Z'; |
4999 | *(p++) = '1'; | |
5000 | *(p++) = ','; | |
5001 | ||
5002 | addr = remote_address_masked (addr); | |
5003 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 5004 | sprintf (p, ",%x", len); |
96baa820 JM |
5005 | |
5006 | putpkt (buf); | |
d01949b6 | 5007 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 5008 | |
d471ea57 AC |
5009 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
5010 | { | |
5011 | case PACKET_ERROR: | |
5012 | case PACKET_UNKNOWN: | |
5013 | return -1; | |
5014 | case PACKET_OK: | |
5015 | return 0; | |
5016 | } | |
8e65ff28 | 5017 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 5018 | "remote_insert_hw_breakpoint: reached end of function"); |
96baa820 JM |
5019 | } |
5020 | ||
d471ea57 | 5021 | |
3c3bea1c GS |
5022 | static int |
5023 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
96baa820 | 5024 | { |
3c3bea1c | 5025 | int len; |
d01949b6 AC |
5026 | struct remote_state *rs = get_remote_state (); |
5027 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 5028 | char *p = buf; |
96baa820 | 5029 | |
3c3bea1c | 5030 | len = sizeof (shadow); |
d471ea57 AC |
5031 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
5032 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
5033 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
5034 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
5035 | ||
96baa820 JM |
5036 | *(p++) = 'z'; |
5037 | *(p++) = '1'; | |
5038 | *(p++) = ','; | |
5039 | ||
5040 | addr = remote_address_masked (addr); | |
5041 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 5042 | sprintf (p, ",%x", len); |
96baa820 JM |
5043 | |
5044 | putpkt(buf); | |
d01949b6 | 5045 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 5046 | |
d471ea57 AC |
5047 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
5048 | { | |
5049 | case PACKET_ERROR: | |
5050 | case PACKET_UNKNOWN: | |
5051 | return -1; | |
5052 | case PACKET_OK: | |
5053 | return 0; | |
5054 | } | |
8e65ff28 | 5055 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 5056 | "remote_remove_hw_breakpoint: reached end of function"); |
96baa820 | 5057 | } |
96baa820 | 5058 | |
c906108c SS |
5059 | /* Some targets are only capable of doing downloads, and afterwards |
5060 | they switch to the remote serial protocol. This function provides | |
5061 | a clean way to get from the download target to the remote target. | |
5062 | It's basically just a wrapper so that we don't have to expose any | |
5063 | of the internal workings of remote.c. | |
5064 | ||
5065 | Prior to calling this routine, you should shutdown the current | |
5066 | target code, else you will get the "A program is being debugged | |
5067 | already..." message. Usually a call to pop_target() suffices. */ | |
5068 | ||
5069 | void | |
fba45db2 | 5070 | push_remote_target (char *name, int from_tty) |
c906108c SS |
5071 | { |
5072 | printf_filtered ("Switching to remote protocol\n"); | |
5073 | remote_open (name, from_tty); | |
5074 | } | |
5075 | ||
5076 | /* Other targets want to use the entire remote serial module but with | |
5077 | certain remote_ops overridden. */ | |
5078 | ||
5079 | void | |
fba45db2 KB |
5080 | open_remote_target (char *name, int from_tty, struct target_ops *target, |
5081 | int extended_p) | |
c906108c SS |
5082 | { |
5083 | printf_filtered ("Selecting the %sremote protocol\n", | |
5084 | (extended_p ? "extended-" : "")); | |
5085 | remote_open_1 (name, from_tty, target, extended_p); | |
5086 | } | |
5087 | ||
5088 | /* Table used by the crc32 function to calcuate the checksum. */ | |
5089 | ||
c5aa993b JM |
5090 | static unsigned long crc32_table[256] = |
5091 | {0, 0}; | |
c906108c SS |
5092 | |
5093 | static unsigned long | |
fba45db2 | 5094 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5095 | { |
c5aa993b | 5096 | if (!crc32_table[1]) |
c906108c SS |
5097 | { |
5098 | /* Initialize the CRC table and the decoding table. */ | |
5099 | int i, j; | |
5100 | unsigned int c; | |
5101 | ||
5102 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5103 | { |
5104 | for (c = i << 24, j = 8; j > 0; --j) | |
5105 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5106 | crc32_table[i] = c; | |
5107 | } | |
c906108c SS |
5108 | } |
5109 | ||
5110 | while (len--) | |
5111 | { | |
5112 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5113 | buf++; | |
5114 | } | |
5115 | return crc; | |
5116 | } | |
5117 | ||
5118 | /* compare-sections command | |
5119 | ||
5120 | With no arguments, compares each loadable section in the exec bfd | |
5121 | with the same memory range on the target, and reports mismatches. | |
5122 | Useful for verifying the image on the target against the exec file. | |
5123 | Depends on the target understanding the new "qCRC:" request. */ | |
5124 | ||
e514a9d6 JM |
5125 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5126 | target method (target verify memory) and generic version of the | |
5127 | actual command. This will allow other high-level code (especially | |
5128 | generic_load()) to make use of this target functionality. */ | |
5129 | ||
c906108c | 5130 | static void |
fba45db2 | 5131 | compare_sections_command (char *args, int from_tty) |
c906108c | 5132 | { |
d01949b6 | 5133 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5134 | asection *s; |
5135 | unsigned long host_crc, target_crc; | |
5136 | extern bfd *exec_bfd; | |
5137 | struct cleanup *old_chain; | |
085dd6e6 JM |
5138 | char *tmp; |
5139 | char *sectdata; | |
ce359b09 | 5140 | const char *sectname; |
d01949b6 | 5141 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
5142 | bfd_size_type size; |
5143 | bfd_vma lma; | |
5144 | int matched = 0; | |
5145 | int mismatched = 0; | |
5146 | ||
5147 | if (!exec_bfd) | |
5148 | error ("command cannot be used without an exec file"); | |
5149 | if (!current_target.to_shortname || | |
5150 | strcmp (current_target.to_shortname, "remote") != 0) | |
5151 | error ("command can only be used with remote target"); | |
5152 | ||
c5aa993b | 5153 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5154 | { |
5155 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5156 | continue; /* skip non-loadable section */ |
c906108c SS |
5157 | |
5158 | size = bfd_get_section_size_before_reloc (s); | |
5159 | if (size == 0) | |
c5aa993b | 5160 | continue; /* skip zero-length section */ |
c906108c | 5161 | |
ce359b09 | 5162 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5163 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5164 | continue; /* not the section selected by user */ |
c906108c | 5165 | |
c5aa993b | 5166 | matched = 1; /* do this section */ |
c906108c SS |
5167 | lma = s->lma; |
5168 | /* FIXME: assumes lma can fit into long */ | |
5169 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
5170 | putpkt (buf); | |
5171 | ||
5172 | /* be clever; compute the host_crc before waiting for target reply */ | |
5173 | sectdata = xmalloc (size); | |
b8c9b27d | 5174 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5175 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5176 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5177 | ||
d01949b6 | 5178 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 5179 | if (buf[0] == 'E') |
823ca731 AC |
5180 | error ("target memory fault, section %s, range 0x%s -- 0x%s", |
5181 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5182 | if (buf[0] != 'C') |
5183 | error ("remote target does not support this operation"); | |
5184 | ||
5185 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
5186 | target_crc = target_crc * 16 + fromhex (*tmp); | |
5187 | ||
d4f3574e SS |
5188 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5189 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5190 | if (host_crc == target_crc) |
5191 | printf_filtered ("matched.\n"); | |
5192 | else | |
c5aa993b JM |
5193 | { |
5194 | printf_filtered ("MIS-MATCHED!\n"); | |
5195 | mismatched++; | |
5196 | } | |
c906108c SS |
5197 | |
5198 | do_cleanups (old_chain); | |
5199 | } | |
5200 | if (mismatched > 0) | |
5201 | warning ("One or more sections of the remote executable does not match\n\ | |
5202 | the loaded file\n"); | |
5203 | if (args && !matched) | |
5204 | printf_filtered ("No loaded section named '%s'.\n", args); | |
5205 | } | |
5206 | ||
5207 | static int | |
fba45db2 | 5208 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c | 5209 | { |
d01949b6 | 5210 | struct remote_state *rs = get_remote_state (); |
c906108c | 5211 | int i; |
d01949b6 | 5212 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 5213 | char *p2 = &buf2[0]; |
c906108c | 5214 | |
c5aa993b | 5215 | if (!bufsiz) |
c906108c SS |
5216 | error ("null pointer to remote bufer size specified"); |
5217 | ||
d01949b6 | 5218 | /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let |
c906108c SS |
5219 | the caller know and return what the minimum size is */ |
5220 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
d01949b6 | 5221 | if (*bufsiz < (rs->remote_packet_size)) |
c906108c | 5222 | { |
d01949b6 | 5223 | *bufsiz = (rs->remote_packet_size); |
c906108c SS |
5224 | return -1; |
5225 | } | |
5226 | ||
5227 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 5228 | if (!remote_desc) |
c906108c SS |
5229 | error ("remote query is only available after target open"); |
5230 | ||
5231 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 5232 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
5233 | error ("invalid remote query type"); |
5234 | ||
c5aa993b | 5235 | if (!buf) |
c906108c SS |
5236 | error ("null remote query specified"); |
5237 | ||
c5aa993b | 5238 | if (!outbuf) |
c906108c SS |
5239 | error ("remote query requires a buffer to receive data"); |
5240 | ||
5241 | outbuf[0] = '\0'; | |
5242 | ||
5243 | *p2++ = 'q'; | |
5244 | *p2++ = query_type; | |
5245 | ||
5246 | /* we used one buffer char for the remote protocol q command and another | |
5247 | for the query type. As the remote protocol encapsulation uses 4 chars | |
5248 | plus one extra in case we are debugging (remote_debug), | |
5249 | we have PBUFZIZ - 7 left to pack the query string */ | |
5250 | i = 0; | |
d01949b6 | 5251 | while (buf[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c SS |
5252 | { |
5253 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
5254 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
5255 | error ("illegal characters in query string"); | |
c906108c SS |
5256 | |
5257 | *p2++ = buf[i]; | |
5258 | i++; | |
5259 | } | |
5260 | *p2 = buf[i]; | |
5261 | ||
c5aa993b | 5262 | if (buf[i]) |
c906108c SS |
5263 | error ("query larger than available buffer"); |
5264 | ||
5265 | i = putpkt (buf2); | |
c5aa993b JM |
5266 | if (i < 0) |
5267 | return i; | |
c906108c | 5268 | |
c2d11a7d | 5269 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
5270 | |
5271 | return 0; | |
5272 | } | |
5273 | ||
96baa820 JM |
5274 | static void |
5275 | remote_rcmd (char *command, | |
d9fcf2fb | 5276 | struct ui_file *outbuf) |
96baa820 | 5277 | { |
d01949b6 | 5278 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5279 | int i; |
d01949b6 | 5280 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5281 | char *p = buf; |
5282 | ||
5283 | if (!remote_desc) | |
5284 | error ("remote rcmd is only available after target open"); | |
5285 | ||
7be570e7 JM |
5286 | /* Send a NULL command across as an empty command */ |
5287 | if (command == NULL) | |
5288 | command = ""; | |
5289 | ||
96baa820 JM |
5290 | /* The query prefix */ |
5291 | strcpy (buf, "qRcmd,"); | |
5292 | p = strchr (buf, '\0'); | |
5293 | ||
d01949b6 | 5294 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5295 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5296 | ||
5297 | /* Encode the actual command */ | |
30559e10 | 5298 | bin2hex (command, p, 0); |
96baa820 JM |
5299 | |
5300 | if (putpkt (buf) < 0) | |
5301 | error ("Communication problem with target\n"); | |
5302 | ||
5303 | /* get/display the response */ | |
5304 | while (1) | |
5305 | { | |
5306 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
5307 | buf[0] = '\0'; | |
d01949b6 | 5308 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5309 | if (buf[0] == '\0') |
5310 | error ("Target does not support this command\n"); | |
5311 | if (buf[0] == 'O' && buf[1] != 'K') | |
5312 | { | |
5313 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
5314 | continue; | |
5315 | } | |
5316 | if (strcmp (buf, "OK") == 0) | |
5317 | break; | |
7be570e7 JM |
5318 | if (strlen (buf) == 3 && buf[0] == 'E' |
5319 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5320 | { | |
5321 | error ("Protocol error with Rcmd"); | |
5322 | } | |
96baa820 JM |
5323 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5324 | { | |
5325 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5326 | fputc_unfiltered (c, outbuf); | |
5327 | } | |
5328 | break; | |
5329 | } | |
5330 | } | |
5331 | ||
c906108c | 5332 | static void |
fba45db2 | 5333 | packet_command (char *args, int from_tty) |
c906108c | 5334 | { |
d01949b6 AC |
5335 | struct remote_state *rs = get_remote_state (); |
5336 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5337 | |
c5aa993b | 5338 | if (!remote_desc) |
c906108c SS |
5339 | error ("command can only be used with remote target"); |
5340 | ||
c5aa993b | 5341 | if (!args) |
c906108c SS |
5342 | error ("remote-packet command requires packet text as argument"); |
5343 | ||
5344 | puts_filtered ("sending: "); | |
5345 | print_packet (args); | |
5346 | puts_filtered ("\n"); | |
5347 | putpkt (args); | |
5348 | ||
d01949b6 | 5349 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5350 | puts_filtered ("received: "); |
5351 | print_packet (buf); | |
5352 | puts_filtered ("\n"); | |
5353 | } | |
5354 | ||
5355 | #if 0 | |
5356 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
5357 | ||
a14ed312 | 5358 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5359 | |
a14ed312 | 5360 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5361 | |
a14ed312 | 5362 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5363 | |
a14ed312 | 5364 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5365 | |
a14ed312 | 5366 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 5367 | |
a14ed312 | 5368 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5369 | |
a14ed312 | 5370 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5371 | |
a14ed312 | 5372 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5373 | |
a14ed312 | 5374 | static void init_remote_threadtests (void); |
c906108c | 5375 | |
c5aa993b | 5376 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5377 | |
5378 | static void | |
fba45db2 | 5379 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5380 | { |
5381 | int sample_thread = SAMPLE_THREAD; | |
5382 | ||
5383 | printf_filtered ("Remote threadset test\n"); | |
5384 | set_thread (sample_thread, 1); | |
5385 | } | |
5386 | ||
5387 | ||
5388 | static void | |
fba45db2 | 5389 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5390 | { |
5391 | int sample_thread = SAMPLE_THREAD; | |
5392 | ||
39f77062 | 5393 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5394 | printf_filtered ("PASS: Thread alive test\n"); |
5395 | else | |
5396 | printf_filtered ("FAIL: Thread alive test\n"); | |
5397 | } | |
5398 | ||
a14ed312 | 5399 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5400 | |
5401 | void | |
fba45db2 | 5402 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5403 | { |
5404 | char hexid[20]; | |
5405 | ||
5406 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5407 | hexid[16] = 0; | |
5408 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5409 | } | |
5410 | ||
5411 | static void | |
fba45db2 | 5412 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5413 | { |
5414 | int startflag = 1; | |
5415 | threadref nextthread; | |
5416 | int done, result_count; | |
5417 | threadref threadlist[3]; | |
5418 | ||
5419 | printf_filtered ("Remote Threadlist test\n"); | |
5420 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5421 | &result_count, &threadlist[0])) | |
5422 | printf_filtered ("FAIL: threadlist test\n"); | |
5423 | else | |
5424 | { | |
5425 | threadref *scan = threadlist; | |
5426 | threadref *limit = scan + result_count; | |
5427 | ||
5428 | while (scan < limit) | |
5429 | output_threadid (" thread ", scan++); | |
5430 | } | |
5431 | } | |
5432 | ||
5433 | void | |
fba45db2 | 5434 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5435 | { |
5436 | output_threadid ("Threadid: ", &info->threadid); | |
5437 | printf_filtered ("Name: %s\n ", info->shortname); | |
5438 | printf_filtered ("State: %s\n", info->display); | |
5439 | printf_filtered ("other: %s\n\n", info->more_display); | |
5440 | } | |
5441 | ||
5442 | int | |
fba45db2 | 5443 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5444 | { |
5445 | int result; | |
5446 | int set; | |
5447 | struct gdb_ext_thread_info threadinfo; | |
5448 | ||
5449 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5450 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5451 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5452 | display_thread_info (&threadinfo); | |
5453 | return result; | |
5454 | } | |
5455 | ||
5456 | static void | |
fba45db2 | 5457 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5458 | { |
5459 | int athread = SAMPLE_THREAD; | |
5460 | threadref thread; | |
5461 | int set; | |
5462 | ||
5463 | int_to_threadref (&thread, athread); | |
5464 | printf_filtered ("Remote Threadinfo test\n"); | |
5465 | if (!get_and_display_threadinfo (&thread)) | |
5466 | printf_filtered ("FAIL cannot get thread info\n"); | |
5467 | } | |
5468 | ||
5469 | static int | |
fba45db2 | 5470 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5471 | { |
5472 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5473 | return get_and_display_threadinfo (ref); | |
5474 | } | |
5475 | ||
5476 | static void | |
fba45db2 | 5477 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5478 | { |
5479 | printf_filtered ("Remote Threadlist update test\n"); | |
5480 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5481 | } | |
5482 | ||
5483 | static void | |
5484 | init_remote_threadtests (void) | |
5485 | { | |
5486 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5487 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5488 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5489 | "Fetch and display info about one thread"); | |
5490 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5491 | "Test setting to a different thread"); | |
5492 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5493 | "Iterate through updating all remote thread info"); | |
5494 | add_com ("talive", class_obscure, threadalive_test, | |
5495 | " Remote thread alive test "); | |
5496 | } | |
5497 | ||
5498 | #endif /* 0 */ | |
5499 | ||
f3fb8c85 MS |
5500 | /* Convert a thread ID to a string. Returns the string in a static |
5501 | buffer. */ | |
5502 | ||
5503 | static char * | |
39f77062 | 5504 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5505 | { |
5506 | static char buf[30]; | |
5507 | ||
39f77062 | 5508 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5509 | return buf; |
5510 | } | |
5511 | ||
c906108c | 5512 | static void |
fba45db2 | 5513 | init_remote_ops (void) |
c906108c | 5514 | { |
c5aa993b | 5515 | remote_ops.to_shortname = "remote"; |
c906108c | 5516 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5517 | remote_ops.to_doc = |
c906108c | 5518 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5519 | Specify the serial device it is connected to\n\ |
5520 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5521 | remote_ops.to_open = remote_open; |
5522 | remote_ops.to_close = remote_close; | |
c906108c | 5523 | remote_ops.to_detach = remote_detach; |
c5aa993b | 5524 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5525 | remote_ops.to_wait = remote_wait; |
5526 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5527 | remote_ops.to_store_registers = remote_store_registers; | |
5528 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5529 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5530 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5531 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5532 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5533 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5534 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5535 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5536 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5537 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5538 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5539 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5540 | remote_ops.to_kill = remote_kill; |
5541 | remote_ops.to_load = generic_load; | |
c906108c SS |
5542 | remote_ops.to_mourn_inferior = remote_mourn; |
5543 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5544 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5545 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5546 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c SS |
5547 | remote_ops.to_stop = remote_stop; |
5548 | remote_ops.to_query = remote_query; | |
96baa820 | 5549 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5550 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5551 | remote_ops.to_has_all_memory = 1; |
5552 | remote_ops.to_has_memory = 1; | |
5553 | remote_ops.to_has_stack = 1; | |
5554 | remote_ops.to_has_registers = 1; | |
5555 | remote_ops.to_has_execution = 1; | |
5556 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5557 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5558 | } |
5559 | ||
5560 | /* Set up the extended remote vector by making a copy of the standard | |
5561 | remote vector and adding to it. */ | |
5562 | ||
5563 | static void | |
fba45db2 | 5564 | init_extended_remote_ops (void) |
c906108c SS |
5565 | { |
5566 | extended_remote_ops = remote_ops; | |
5567 | ||
0f71a2f6 | 5568 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5569 | extended_remote_ops.to_longname = |
c906108c | 5570 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5571 | extended_remote_ops.to_doc = |
c906108c SS |
5572 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5573 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5574 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5575 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5576 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5577 | } |
5578 | ||
5579 | /* | |
5580 | * Command: info remote-process | |
5581 | * | |
5582 | * This implements Cisco's version of the "info proc" command. | |
5583 | * | |
5584 | * This query allows the target stub to return an arbitrary string | |
5585 | * (or strings) giving arbitrary information about the target process. | |
5586 | * This is optional; the target stub isn't required to implement it. | |
5587 | * | |
5588 | * Syntax: qfProcessInfo request first string | |
5589 | * qsProcessInfo request subsequent string | |
5590 | * reply: 'O'<hex-encoded-string> | |
5591 | * 'l' last reply (empty) | |
5592 | */ | |
5593 | ||
5594 | static void | |
c2d11a7d | 5595 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5596 | { |
d01949b6 AC |
5597 | struct remote_state *rs = get_remote_state (); |
5598 | char *buf = alloca (rs->remote_packet_size); | |
0f71a2f6 JM |
5599 | |
5600 | if (remote_desc == 0) | |
5601 | error ("Command can only be used when connected to the remote target."); | |
5602 | ||
5603 | putpkt ("qfProcessInfo"); | |
d01949b6 | 5604 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 | 5605 | if (buf[0] == 0) |
c5aa993b | 5606 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5607 | |
5608 | if (buf[0] == 'E') | |
5609 | error ("info proc: target error."); | |
5610 | ||
c5aa993b | 5611 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5612 | { |
5613 | remote_console_output (&buf[1]); | |
5614 | putpkt ("qsProcessInfo"); | |
d01949b6 | 5615 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 JM |
5616 | } |
5617 | } | |
5618 | ||
5619 | /* | |
5620 | * Target Cisco | |
5621 | */ | |
5622 | ||
5623 | static void | |
c2d11a7d | 5624 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 | 5625 | { |
36918e70 | 5626 | int ex; |
0f71a2f6 | 5627 | if (name == 0) |
22e04375 AC |
5628 | error ("To open a remote debug connection, you need to specify what \n" |
5629 | "device is attached to the remote system (e.g. host:port)."); | |
0f71a2f6 | 5630 | |
6426a772 JM |
5631 | /* See FIXME above */ |
5632 | wait_forever_enabled_p = 1; | |
5633 | ||
0f71a2f6 JM |
5634 | target_preopen (from_tty); |
5635 | ||
5636 | unpush_target (&remote_cisco_ops); | |
5637 | ||
9db8d71f | 5638 | remote_desc = remote_serial_open (name); |
0f71a2f6 JM |
5639 | if (!remote_desc) |
5640 | perror_with_name (name); | |
5641 | ||
5642 | /* | |
5643 | * If a baud rate was specified on the gdb command line it will | |
5644 | * be greater than the initial value of -1. If it is, use it otherwise | |
5645 | * default to 9600 | |
5646 | */ | |
5647 | ||
5648 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
2cd58942 | 5649 | if (serial_setbaudrate (remote_desc, baud_rate)) |
0f71a2f6 | 5650 | { |
2cd58942 | 5651 | serial_close (remote_desc); |
0f71a2f6 JM |
5652 | perror_with_name (name); |
5653 | } | |
5654 | ||
2cd58942 | 5655 | serial_raw (remote_desc); |
0f71a2f6 JM |
5656 | |
5657 | /* If there is something sitting in the buffer we might take it as a | |
5658 | response to a command, which would be bad. */ | |
2cd58942 | 5659 | serial_flush_input (remote_desc); |
0f71a2f6 JM |
5660 | |
5661 | if (from_tty) | |
5662 | { | |
5663 | puts_filtered ("Remote debugging using "); | |
5664 | puts_filtered (name); | |
5665 | puts_filtered ("\n"); | |
5666 | } | |
5667 | ||
5668 | remote_cisco_mode = 1; | |
5669 | ||
5670 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5671 | ||
d471ea57 | 5672 | init_all_packet_configs (); |
0f71a2f6 | 5673 | |
c5aa993b | 5674 | general_thread = -2; |
0f71a2f6 JM |
5675 | continue_thread = -2; |
5676 | ||
9d1f7ab2 MS |
5677 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5678 | use_threadinfo_query = 1; | |
5679 | use_threadextra_query = 1; | |
5680 | ||
0f71a2f6 JM |
5681 | /* Without this, some commands which require an active target (such |
5682 | as kill) won't work. This variable serves (at least) double duty | |
5683 | as both the pid of the target process (if it has such), and as a | |
5684 | flag indicating that a target is active. These functions should | |
5685 | be split out into seperate variables, especially since GDB will | |
5686 | someday have a notion of debugging several processes. */ | |
39f77062 | 5687 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
0f71a2f6 | 5688 | |
36918e70 | 5689 | /* Start the remote connection; if error, discard this target. See |
165b8e33 AC |
5690 | the comments in remote_open_1() for further details such as the |
5691 | need to re-throw the exception. */ | |
36918e70 AC |
5692 | ex = catch_exceptions (uiout, |
5693 | remote_start_remote_dummy, NULL, | |
5694 | "Couldn't establish connection to remote" | |
5695 | " target\n", | |
5696 | RETURN_MASK_ALL); | |
5697 | if (ex < 0) | |
0f71a2f6 JM |
5698 | { |
5699 | pop_target (); | |
165b8e33 | 5700 | throw_exception (ex); |
0f71a2f6 JM |
5701 | } |
5702 | } | |
5703 | ||
5704 | static void | |
c2d11a7d | 5705 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5706 | { |
5707 | remote_cisco_mode = 0; | |
5708 | remote_close (quitting); | |
5709 | } | |
5710 | ||
c5aa993b | 5711 | static void |
8ab86381 | 5712 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5713 | { |
5714 | remote_mourn_1 (&remote_cisco_ops); | |
5715 | } | |
5716 | ||
c5aa993b JM |
5717 | enum |
5718 | { | |
5719 | READ_MORE, | |
5720 | FATAL_ERROR, | |
5721 | ENTER_DEBUG, | |
0f71a2f6 | 5722 | DISCONNECT_TELNET |
c5aa993b JM |
5723 | } |
5724 | minitelnet_return; | |
0f71a2f6 | 5725 | |
1ff9c3d6 AC |
5726 | /* Shared between readsocket() and readtty(). The size is arbitrary, |
5727 | however all targets are known to support a 400 character packet. */ | |
5728 | static char tty_input[400]; | |
0f71a2f6 JM |
5729 | |
5730 | static int escape_count; | |
5731 | static int echo_check; | |
5732 | extern int quit_flag; | |
5733 | ||
5734 | static int | |
c2d11a7d | 5735 | readsocket (void) |
0f71a2f6 JM |
5736 | { |
5737 | int data; | |
5738 | ||
5739 | /* Loop until the socket doesn't have any more data */ | |
5740 | ||
c5aa993b | 5741 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5742 | { |
5743 | /* Check for the escape sequence */ | |
c5aa993b | 5744 | if (data == '|') |
0f71a2f6 JM |
5745 | { |
5746 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5747 | if (++escape_count == 4) |
0f71a2f6 JM |
5748 | { |
5749 | return ENTER_DEBUG; | |
5750 | } | |
c5aa993b JM |
5751 | else |
5752 | { /* This is a '|', but not the fourth in a row. | |
5753 | Continue without echoing it. If it isn't actually | |
5754 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5755 | continue; |
5756 | } | |
5757 | } | |
c5aa993b JM |
5758 | else |
5759 | /* Not a '|' */ | |
5760 | { | |
0f71a2f6 JM |
5761 | /* Ensure any pending '|'s are flushed. */ |
5762 | ||
c5aa993b JM |
5763 | for (; escape_count > 0; escape_count--) |
5764 | putchar ('|'); | |
0f71a2f6 | 5765 | } |
0f71a2f6 | 5766 | |
c5aa993b JM |
5767 | if (data == '\r') /* If this is a return character, */ |
5768 | continue; /* - just supress it. */ | |
5769 | ||
5770 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5771 | { |
5772 | if (tty_input[echo_check] == data) | |
5773 | { | |
1ff9c3d6 | 5774 | gdb_assert (echo_check <= sizeof (tty_input)); |
c5aa993b JM |
5775 | echo_check++; /* Character matched user input: */ |
5776 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5777 | } |
c5aa993b JM |
5778 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5779 | { /* End of the line (and of echo checking). */ | |
5780 | echo_check = -1; /* No more echo supression */ | |
5781 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5782 | } |
5783 | else | |
c5aa993b JM |
5784 | { /* Failed check for echo of user input. |
5785 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5786 | int j; |
5787 | ||
c5aa993b | 5788 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5789 | putchar (tty_input[j]); |
5790 | echo_check = -1; | |
5791 | } | |
5792 | } | |
c5aa993b | 5793 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5794 | } |
5795 | ||
c5aa993b JM |
5796 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5797 | return READ_MORE; /* Try to read some more */ | |
5798 | else | |
5799 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5800 | } |
5801 | ||
5802 | static int | |
c2d11a7d | 5803 | readtty (void) |
0f71a2f6 | 5804 | { |
0f71a2f6 JM |
5805 | int tty_bytecount; |
5806 | ||
5807 | /* First, read a buffer full from the terminal */ | |
5808 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5809 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5810 | { |
5811 | perror ("readtty: read failed"); | |
5812 | return FATAL_ERROR; | |
5813 | } | |
5814 | ||
5815 | /* Remove a quoted newline. */ | |
5816 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5817 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5818 | { | |
c5aa993b JM |
5819 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5820 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5821 | } |
5822 | ||
5823 | /* Turn trailing newlines into returns */ | |
5824 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5825 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5826 | |
5827 | /* If the line consists of a ~, enter debugging mode. */ | |
5828 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5829 | return ENTER_DEBUG; | |
5830 | ||
5831 | /* Make this a zero terminated string and write it out */ | |
5832 | tty_input[tty_bytecount] = 0; | |
2cd58942 | 5833 | if (serial_write (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5834 | { |
5835 | perror_with_name ("readtty: write failed"); | |
5836 | return FATAL_ERROR; | |
5837 | } | |
5838 | ||
5839 | return READ_MORE; | |
5840 | } | |
5841 | ||
5842 | static int | |
c2d11a7d | 5843 | minitelnet (void) |
0f71a2f6 JM |
5844 | { |
5845 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5846 | int tablesize; /* max number of FDs for select */ |
5847 | int status; | |
5848 | int quit_count = 0; | |
0f71a2f6 JM |
5849 | |
5850 | extern int escape_count; /* global shared by readsocket */ | |
5851 | extern int echo_check; /* ditto */ | |
5852 | ||
5853 | escape_count = 0; | |
c5aa993b | 5854 | echo_check = -1; |
0f71a2f6 JM |
5855 | |
5856 | tablesize = 8 * sizeof (input); | |
5857 | ||
c5aa993b | 5858 | for (;;) |
0f71a2f6 JM |
5859 | { |
5860 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5861 | this must be done *before* the select as there may be |
5862 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5863 | |
c5aa993b | 5864 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5865 | { |
5866 | error ("Debugging terminated by communications error"); | |
5867 | } | |
c5aa993b | 5868 | else if (status != READ_MORE) |
0f71a2f6 JM |
5869 | { |
5870 | return (status); | |
5871 | } | |
5872 | ||
c5aa993b | 5873 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5874 | |
5875 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5876 | |
0f71a2f6 | 5877 | FD_ZERO (&input); |
c5aa993b | 5878 | FD_SET (fileno (stdin), &input); |
2cd58942 | 5879 | FD_SET (deprecated_serial_fd (remote_desc), &input); |
0f71a2f6 JM |
5880 | |
5881 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5882 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5883 | { |
5884 | error ("Communications error on select %d", errno); | |
5885 | } | |
5886 | ||
5887 | /* Handle Control-C typed */ | |
5888 | ||
c5aa993b | 5889 | if (quit_flag) |
0f71a2f6 JM |
5890 | { |
5891 | if ((++quit_count) == 2) | |
5892 | { | |
5893 | if (query ("Interrupt GDB? ")) | |
5894 | { | |
5895 | printf_filtered ("Interrupted by user.\n"); | |
b5a2688f | 5896 | throw_exception (RETURN_QUIT); |
0f71a2f6 JM |
5897 | } |
5898 | quit_count = 0; | |
5899 | } | |
5900 | quit_flag = 0; | |
5901 | ||
5902 | if (remote_break) | |
2cd58942 | 5903 | serial_send_break (remote_desc); |
0f71a2f6 | 5904 | else |
2cd58942 | 5905 | serial_write (remote_desc, "\003", 1); |
0f71a2f6 JM |
5906 | |
5907 | continue; | |
5908 | } | |
5909 | ||
5910 | /* Handle console input */ | |
5911 | ||
c5aa993b | 5912 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5913 | { |
5914 | quit_count = 0; | |
5915 | echo_check = 0; | |
5916 | status = readtty (); | |
5917 | if (status == READ_MORE) | |
5918 | continue; | |
5919 | ||
5920 | return status; /* telnet session ended */ | |
5921 | } | |
5922 | } | |
5923 | } | |
5924 | ||
39f77062 KB |
5925 | static ptid_t |
5926 | remote_cisco_wait (ptid_t ptid, struct target_waitstatus *status) | |
0f71a2f6 | 5927 | { |
c5aa993b | 5928 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5929 | { |
5930 | error ("Debugging session terminated by protocol error"); | |
5931 | } | |
5932 | putpkt ("?"); | |
39f77062 | 5933 | return remote_wait (ptid, status); |
0f71a2f6 JM |
5934 | } |
5935 | ||
5936 | static void | |
fba45db2 | 5937 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5938 | { |
5939 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5940 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5941 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5942 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5943 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5944 | remote_cisco_ops.to_open = remote_cisco_open; |
5945 | remote_cisco_ops.to_close = remote_cisco_close; | |
5946 | remote_cisco_ops.to_detach = remote_detach; | |
5947 | remote_cisco_ops.to_resume = remote_resume; | |
5948 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5949 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5950 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5951 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5952 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5953 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 | 5954 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
3c3bea1c GS |
5955 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; |
5956 | remote_cisco_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5957 | remote_cisco_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5958 | remote_cisco_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5959 | remote_cisco_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5960 | remote_cisco_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5961 | remote_cisco_ops.to_stopped_data_address = remote_stopped_data_address; | |
5962 | remote_cisco_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
c5aa993b JM |
5963 | remote_cisco_ops.to_kill = remote_kill; |
5964 | remote_cisco_ops.to_load = generic_load; | |
5965 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5966 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5967 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5968 | remote_cisco_ops.to_pid_to_str = remote_pid_to_str; |
5969 | remote_cisco_ops.to_extra_thread_info = remote_threads_extra_info; | |
c5aa993b JM |
5970 | remote_cisco_ops.to_stratum = process_stratum; |
5971 | remote_cisco_ops.to_has_all_memory = 1; | |
5972 | remote_cisco_ops.to_has_memory = 1; | |
5973 | remote_cisco_ops.to_has_stack = 1; | |
5974 | remote_cisco_ops.to_has_registers = 1; | |
5975 | remote_cisco_ops.to_has_execution = 1; | |
5976 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5977 | } |
5978 | ||
6426a772 JM |
5979 | static int |
5980 | remote_can_async_p (void) | |
5981 | { | |
5982 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5983 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5984 | } |
5985 | ||
5986 | static int | |
5987 | remote_is_async_p (void) | |
5988 | { | |
5989 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5990 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5991 | } |
5992 | ||
2acceee2 JM |
5993 | /* Pass the SERIAL event on and up to the client. One day this code |
5994 | will be able to delay notifying the client of an event until the | |
5995 | point where an entire packet has been received. */ | |
5996 | ||
5997 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5998 | static void *async_client_context; | |
5999 | static serial_event_ftype remote_async_serial_handler; | |
6000 | ||
6426a772 | 6001 | static void |
819cc324 | 6002 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 6003 | { |
2acceee2 JM |
6004 | /* Don't propogate error information up to the client. Instead let |
6005 | the client find out about the error by querying the target. */ | |
6006 | async_client_callback (INF_REG_EVENT, async_client_context); | |
6007 | } | |
6008 | ||
6009 | static void | |
6010 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
6011 | { | |
ed9a39eb | 6012 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
6013 | internal_error (__FILE__, __LINE__, |
6014 | "Calling remote_async when async is masked"); | |
ed9a39eb | 6015 | |
2acceee2 JM |
6016 | if (callback != NULL) |
6017 | { | |
2cd58942 | 6018 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
6019 | async_client_callback = callback; |
6020 | async_client_context = context; | |
6021 | } | |
6022 | else | |
2cd58942 | 6023 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
6024 | } |
6025 | ||
43ff13b4 JM |
6026 | /* Target async and target extended-async. |
6027 | ||
6028 | This are temporary targets, until it is all tested. Eventually | |
6029 | async support will be incorporated int the usual 'remote' | |
6030 | target. */ | |
6031 | ||
6032 | static void | |
c2d11a7d | 6033 | init_remote_async_ops (void) |
43ff13b4 JM |
6034 | { |
6035 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
6036 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
6037 | remote_async_ops.to_doc = | |
43ff13b4 JM |
6038 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6039 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
6040 | remote_async_ops.to_open = remote_async_open; |
6041 | remote_async_ops.to_close = remote_close; | |
6042 | remote_async_ops.to_detach = remote_async_detach; | |
6043 | remote_async_ops.to_resume = remote_async_resume; | |
6044 | remote_async_ops.to_wait = remote_async_wait; | |
6045 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
6046 | remote_async_ops.to_store_registers = remote_store_registers; | |
6047 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
6048 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
6049 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
6050 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6051 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6052 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
6053 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6054 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6055 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6056 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
6057 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
6058 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
6059 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
6060 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
6061 | remote_async_ops.to_kill = remote_async_kill; |
6062 | remote_async_ops.to_load = generic_load; | |
53a5351d | 6063 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
6064 | remote_async_ops.to_thread_alive = remote_thread_alive; |
6065 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
6066 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
6067 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 JM |
6068 | remote_async_ops.to_stop = remote_stop; |
6069 | remote_async_ops.to_query = remote_query; | |
96baa820 | 6070 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
6071 | remote_async_ops.to_stratum = process_stratum; |
6072 | remote_async_ops.to_has_all_memory = 1; | |
6073 | remote_async_ops.to_has_memory = 1; | |
6074 | remote_async_ops.to_has_stack = 1; | |
6075 | remote_async_ops.to_has_registers = 1; | |
6076 | remote_async_ops.to_has_execution = 1; | |
6077 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
6078 | remote_async_ops.to_can_async_p = remote_can_async_p; |
6079 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
6080 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 6081 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 6082 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
6083 | } |
6084 | ||
6085 | /* Set up the async extended remote vector by making a copy of the standard | |
6086 | remote vector and adding to it. */ | |
6087 | ||
6088 | static void | |
c2d11a7d | 6089 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
6090 | { |
6091 | extended_async_remote_ops = remote_async_ops; | |
6092 | ||
6093 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 6094 | extended_async_remote_ops.to_longname = |
43ff13b4 | 6095 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 6096 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
6097 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
6098 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6099 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
6100 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6101 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6102 | } | |
6103 | ||
5a2468f5 | 6104 | static void |
c2d11a7d | 6105 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6106 | { |
5a2468f5 JM |
6107 | } |
6108 | ||
d471ea57 AC |
6109 | static void |
6110 | show_remote_cmd (char *args, int from_tty) | |
6111 | { | |
e9e68a56 AC |
6112 | /* FIXME: cagney/2002-06-15: This function should iterate over |
6113 | remote_show_cmdlist for a list of sub commands to show. */ | |
6114 | show_remote_protocol_Z_packet_cmd (args, from_tty, NULL); | |
6115 | show_remote_protocol_e_packet_cmd (args, from_tty, NULL); | |
6116 | show_remote_protocol_E_packet_cmd (args, from_tty, NULL); | |
6117 | show_remote_protocol_P_packet_cmd (args, from_tty, NULL); | |
6118 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL); | |
6119 | show_remote_protocol_binary_download_cmd (args, from_tty, NULL); | |
d471ea57 | 6120 | } |
5a2468f5 | 6121 | |
0f71a2f6 | 6122 | static void |
fba45db2 | 6123 | build_remote_gdbarch_data (void) |
0f71a2f6 | 6124 | { |
d696208f | 6125 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
6126 | } |
6127 | ||
dc8acb97 MS |
6128 | /* Saved pointer to previous owner of the new_objfile event. */ |
6129 | static void (*remote_new_objfile_chain) (struct objfile *); | |
6130 | ||
6131 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
6132 | static void | |
6133 | remote_new_objfile (struct objfile *objfile) | |
6134 | { | |
6135 | if (remote_desc != 0) /* Have a remote connection */ | |
6136 | { | |
6137 | remote_check_symbols (objfile); | |
6138 | } | |
6139 | /* Call predecessor on chain, if any. */ | |
6140 | if (remote_new_objfile_chain != 0 && | |
6141 | remote_desc == 0) | |
6142 | remote_new_objfile_chain (objfile); | |
6143 | } | |
6144 | ||
c906108c | 6145 | void |
fba45db2 | 6146 | _initialize_remote (void) |
c906108c | 6147 | { |
5a2468f5 JM |
6148 | static struct cmd_list_element *remote_set_cmdlist; |
6149 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 6150 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 6151 | |
0f71a2f6 | 6152 | /* architecture specific data */ |
d01949b6 AC |
6153 | remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state, |
6154 | free_remote_state); | |
6155 | ||
6156 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
6157 | that the remote protocol has been initialized. */ | |
11cf8741 JM |
6158 | register_gdbarch_swap (&remote_address_size, |
6159 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
6160 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
6161 | ||
c906108c SS |
6162 | init_remote_ops (); |
6163 | add_target (&remote_ops); | |
6164 | ||
6165 | init_extended_remote_ops (); | |
6166 | add_target (&extended_remote_ops); | |
cce74817 | 6167 | |
43ff13b4 JM |
6168 | init_remote_async_ops (); |
6169 | add_target (&remote_async_ops); | |
6170 | ||
6171 | init_extended_async_remote_ops (); | |
6172 | add_target (&extended_async_remote_ops); | |
6173 | ||
0f71a2f6 JM |
6174 | init_remote_cisco_ops (); |
6175 | add_target (&remote_cisco_ops); | |
6176 | ||
dc8acb97 MS |
6177 | /* Hook into new objfile notification. */ |
6178 | remote_new_objfile_chain = target_new_objfile_hook; | |
6179 | target_new_objfile_hook = remote_new_objfile; | |
6180 | ||
c906108c SS |
6181 | #if 0 |
6182 | init_remote_threadtests (); | |
6183 | #endif | |
6184 | ||
d471ea57 AC |
6185 | /* set/show remote ... */ |
6186 | ||
5a2468f5 JM |
6187 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
6188 | Remote protocol specific variables\n\ | |
6189 | Configure various remote-protocol specific variables such as\n\ | |
6190 | the packets being used", | |
cff3e48b | 6191 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 6192 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 6193 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
6194 | Remote protocol specific variables\n\ |
6195 | Configure various remote-protocol specific variables such as\n\ | |
6196 | the packets being used", | |
cff3e48b | 6197 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
6198 | 0/*allow-unknown*/, &showlist); |
6199 | ||
c5aa993b | 6200 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 6201 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 6202 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
6203 | &cmdlist); |
6204 | ||
6205 | add_cmd ("packet", class_maintenance, packet_command, | |
6206 | "Send an arbitrary packet to a remote target.\n\ | |
6207 | maintenance packet TEXT\n\ | |
6208 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6209 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6210 | response packet. GDB supplies the initial `$' character, and the\n\ | |
6211 | terminating `#' character and checksum.", | |
6212 | &maintenancelist); | |
6213 | ||
e707bbc2 AC |
6214 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, |
6215 | "Set whether to send break if interrupted.\n", | |
6216 | "Show whether to send break if interrupted.\n", | |
6217 | NULL, NULL, | |
6218 | &setlist, &showlist); | |
c906108c | 6219 | |
11cf8741 JM |
6220 | /* Install commands for configuring memory read/write packets. */ |
6221 | ||
6222 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
6223 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
6224 | &setlist); | |
4ad5b0f7 | 6225 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
6226 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
6227 | &showlist); | |
6228 | add_cmd ("memory-write-packet-size", no_class, | |
6229 | set_memory_write_packet_size, | |
6230 | "Set the maximum number of bytes per memory-write packet.\n" | |
6231 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6232 | "default packet size. The actual limit is further reduced\n" | |
6233 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6234 | "further restriction and ``limit'' to enable that restriction\n", | |
6235 | &remote_set_cmdlist); | |
6236 | add_cmd ("memory-read-packet-size", no_class, | |
6237 | set_memory_read_packet_size, | |
6238 | "Set the maximum number of bytes per memory-read packet.\n" | |
6239 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6240 | "default packet size. The actual limit is further reduced\n" | |
6241 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6242 | "further restriction and ``limit'' to enable that restriction\n", | |
6243 | &remote_set_cmdlist); | |
6244 | add_cmd ("memory-write-packet-size", no_class, | |
6245 | show_memory_write_packet_size, | |
6246 | "Show the maximum number of bytes per memory-write packet.\n", | |
6247 | &remote_show_cmdlist); | |
6248 | add_cmd ("memory-read-packet-size", no_class, | |
6249 | show_memory_read_packet_size, | |
6250 | "Show the maximum number of bytes per memory-read packet.\n", | |
6251 | &remote_show_cmdlist); | |
c906108c | 6252 | |
c5aa993b | 6253 | add_show_from_set |
c906108c | 6254 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 6255 | var_integer, (char *) &remote_address_size, |
c906108c SS |
6256 | "Set the maximum size of the address (in bits) \ |
6257 | in a memory packet.\n", | |
6258 | &setlist), | |
c5aa993b | 6259 | &showlist); |
c906108c | 6260 | |
96baa820 JM |
6261 | add_packet_config_cmd (&remote_protocol_binary_download, |
6262 | "X", "binary-download", | |
6263 | set_remote_protocol_binary_download_cmd, | |
6264 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
6265 | &remote_set_cmdlist, &remote_show_cmdlist, |
6266 | 1); | |
96baa820 JM |
6267 | #if 0 |
6268 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
6269 | compatibility. */ | |
c5aa993b | 6270 | add_show_from_set |
b83266a0 SS |
6271 | (add_set_cmd ("remotebinarydownload", no_class, |
6272 | var_boolean, (char *) &remote_binary_download, | |
6273 | "Set binary downloads.\n", &setlist), | |
6274 | &showlist); | |
96baa820 | 6275 | #endif |
0f71a2f6 JM |
6276 | |
6277 | add_info ("remote-process", remote_info_process, | |
6278 | "Query the remote system for process info."); | |
6279 | ||
dc8acb97 MS |
6280 | add_packet_config_cmd (&remote_protocol_qSymbol, |
6281 | "qSymbol", "symbol-lookup", | |
6282 | set_remote_protocol_qSymbol_packet_cmd, | |
6283 | show_remote_protocol_qSymbol_packet_cmd, | |
6284 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6285 | 0); | |
6286 | ||
44eaed12 C |
6287 | add_packet_config_cmd (&remote_protocol_e, |
6288 | "e", "step-over-range", | |
6289 | set_remote_protocol_e_packet_cmd, | |
6290 | show_remote_protocol_e_packet_cmd, | |
6291 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6292 | 0); | |
0f017ab9 AC |
6293 | /* Disable by default. The ``e'' packet has nasty interactions with |
6294 | the threading code - it relies on global state. */ | |
7f19b9a2 | 6295 | remote_protocol_e.detect = AUTO_BOOLEAN_FALSE; |
0f017ab9 | 6296 | update_packet_config (&remote_protocol_e); |
44eaed12 C |
6297 | |
6298 | add_packet_config_cmd (&remote_protocol_E, | |
6299 | "E", "step-over-range-w-signal", | |
6300 | set_remote_protocol_E_packet_cmd, | |
6301 | show_remote_protocol_E_packet_cmd, | |
6302 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6303 | 0); | |
0f017ab9 AC |
6304 | /* Disable by default. The ``e'' packet has nasty interactions with |
6305 | the threading code - it relies on global state. */ | |
7f19b9a2 | 6306 | remote_protocol_E.detect = AUTO_BOOLEAN_FALSE; |
0f017ab9 | 6307 | update_packet_config (&remote_protocol_E); |
44eaed12 | 6308 | |
d471ea57 AC |
6309 | add_packet_config_cmd (&remote_protocol_P, |
6310 | "P", "set-register", | |
5a2468f5 JM |
6311 | set_remote_protocol_P_packet_cmd, |
6312 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
6313 | &remote_set_cmdlist, &remote_show_cmdlist, |
6314 | 1); | |
6315 | ||
6316 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
6317 | "Z0", "software-breakpoint", | |
6318 | set_remote_protocol_Z_software_bp_packet_cmd, | |
6319 | show_remote_protocol_Z_software_bp_packet_cmd, | |
6320 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6321 | 0); | |
6322 | ||
6323 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
6324 | "Z1", "hardware-breakpoint", | |
6325 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
6326 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
6327 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6328 | 0); | |
6329 | ||
6330 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
6331 | "Z2", "write-watchpoint", | |
6332 | set_remote_protocol_Z_write_wp_packet_cmd, | |
6333 | show_remote_protocol_Z_write_wp_packet_cmd, | |
6334 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6335 | 0); | |
6336 | ||
6337 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
6338 | "Z3", "read-watchpoint", | |
6339 | set_remote_protocol_Z_read_wp_packet_cmd, | |
6340 | show_remote_protocol_Z_read_wp_packet_cmd, | |
6341 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6342 | 0); | |
6343 | ||
6344 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
6345 | "Z4", "access-watchpoint", | |
6346 | set_remote_protocol_Z_access_wp_packet_cmd, | |
6347 | show_remote_protocol_Z_access_wp_packet_cmd, | |
6348 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6349 | 0); | |
6350 | ||
6351 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
e9e68a56 AC |
6352 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
6353 | &remote_Z_packet_detect, "\ | |
6354 | Set use of remote protocol `Z' packets", | |
6355 | "Show use of remote protocol `Z' packets ", | |
6356 | set_remote_protocol_Z_packet_cmd, | |
6357 | show_remote_protocol_Z_packet_cmd, | |
6358 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 6359 | } |