Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c AC |
2 | |
3 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, | |
4 | 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b JM |
6 | This file is part of GDB. |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c5aa993b | 22 | |
96baa820 | 23 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 24 | |
c906108c SS |
25 | #include "defs.h" |
26 | #include "gdb_string.h" | |
27 | #include <ctype.h> | |
28 | #include <fcntl.h> | |
c906108c SS |
29 | #include "inferior.h" |
30 | #include "bfd.h" | |
31 | #include "symfile.h" | |
32 | #include "target.h" | |
c5aa993b | 33 | /*#include "terminal.h" */ |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "objfiles.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "gdbthread.h" | |
c2c6d25f | 38 | #include "remote.h" |
4e052eda | 39 | #include "regcache.h" |
fd0407d6 | 40 | #include "value.h" |
1ff9c3d6 | 41 | #include "gdb_assert.h" |
c906108c | 42 | |
7a292a7a | 43 | #include <ctype.h> |
9846de1b | 44 | #include <sys/time.h> |
c906108c SS |
45 | #ifdef USG |
46 | #include <sys/types.h> | |
47 | #endif | |
48 | ||
43ff13b4 | 49 | #include "event-loop.h" |
c2c6d25f | 50 | #include "event-top.h" |
2acceee2 | 51 | #include "inf-loop.h" |
43ff13b4 | 52 | |
c906108c SS |
53 | #include <signal.h> |
54 | #include "serial.h" | |
55 | ||
6240bebf MS |
56 | #include "gdbcore.h" /* for exec_bfd */ |
57 | ||
449092f6 CV |
58 | #include "remote-fileio.h" |
59 | ||
c906108c | 60 | /* Prototypes for local functions */ |
6426a772 JM |
61 | static void cleanup_sigint_signal_handler (void *dummy); |
62 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 63 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 64 | |
a14ed312 KB |
65 | static void handle_remote_sigint (int); |
66 | static void handle_remote_sigint_twice (int); | |
67 | static void async_remote_interrupt (gdb_client_data); | |
68 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 69 | |
a14ed312 | 70 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 71 | |
a14ed312 | 72 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 73 | |
a14ed312 KB |
74 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
75 | int len, int should_write, | |
29e57380 | 76 | struct mem_attrib *attrib, |
a14ed312 | 77 | struct target_ops *target); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_prepare_to_store (void); |
c906108c | 80 | |
a14ed312 | 81 | static void remote_fetch_registers (int regno); |
c906108c | 82 | |
39f77062 KB |
83 | static void remote_resume (ptid_t ptid, int step, |
84 | enum target_signal siggnal); | |
85 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 86 | enum target_signal siggnal); |
36918e70 | 87 | static int remote_start_remote (struct ui_out *uiout, void *dummy); |
c906108c | 88 | |
a14ed312 KB |
89 | static void remote_open (char *name, int from_tty); |
90 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 91 | |
a14ed312 KB |
92 | static void extended_remote_open (char *name, int from_tty); |
93 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 94 | |
92d1e331 DJ |
95 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
96 | int async_p); | |
c906108c | 97 | |
a14ed312 | 98 | static void remote_close (int quitting); |
c906108c | 99 | |
a14ed312 | 100 | static void remote_store_registers (int regno); |
c906108c | 101 | |
a14ed312 KB |
102 | static void remote_mourn (void); |
103 | static void remote_async_mourn (void); | |
c906108c | 104 | |
a14ed312 | 105 | static void extended_remote_restart (void); |
c906108c | 106 | |
a14ed312 | 107 | static void extended_remote_mourn (void); |
c906108c | 108 | |
a14ed312 KB |
109 | static void extended_remote_create_inferior (char *, char *, char **); |
110 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 111 | |
a14ed312 | 112 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 113 | |
c2d11a7d | 114 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 115 | |
a14ed312 | 116 | static int readchar (int timeout); |
c906108c | 117 | |
39f77062 KB |
118 | static ptid_t remote_wait (ptid_t ptid, |
119 | struct target_waitstatus *status); | |
120 | static ptid_t remote_async_wait (ptid_t ptid, | |
121 | struct target_waitstatus *status); | |
c906108c | 122 | |
a14ed312 KB |
123 | static void remote_kill (void); |
124 | static void remote_async_kill (void); | |
c906108c | 125 | |
a14ed312 | 126 | static int tohex (int nib); |
c906108c | 127 | |
a14ed312 | 128 | static void remote_detach (char *args, int from_tty); |
c906108c | 129 | |
a14ed312 | 130 | static void remote_interrupt (int signo); |
c906108c | 131 | |
a14ed312 | 132 | static void remote_interrupt_twice (int signo); |
7a292a7a | 133 | |
a14ed312 | 134 | static void interrupt_query (void); |
c906108c | 135 | |
a14ed312 | 136 | static void set_thread (int, int); |
c906108c | 137 | |
39f77062 | 138 | static int remote_thread_alive (ptid_t); |
c906108c | 139 | |
a14ed312 | 140 | static void get_offsets (void); |
c906108c | 141 | |
c2d11a7d | 142 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 143 | |
a14ed312 | 144 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 145 | |
a14ed312 | 146 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 147 | |
a14ed312 | 148 | static int hexnumlen (ULONGEST num); |
c906108c | 149 | |
a14ed312 | 150 | static void init_remote_ops (void); |
c906108c | 151 | |
a14ed312 | 152 | static void init_extended_remote_ops (void); |
c906108c | 153 | |
a14ed312 | 154 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
155 | |
156 | static struct target_ops remote_cisco_ops; | |
157 | ||
a14ed312 | 158 | static void remote_stop (void); |
c906108c | 159 | |
a14ed312 | 160 | static int ishex (int ch, int *val); |
c906108c | 161 | |
a14ed312 | 162 | static int stubhex (int ch); |
c906108c | 163 | |
a14ed312 | 164 | static int hexnumstr (char *, ULONGEST); |
c906108c | 165 | |
a14ed312 | 166 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 167 | |
a14ed312 | 168 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 169 | |
a14ed312 | 170 | static void print_packet (char *); |
c906108c | 171 | |
a14ed312 | 172 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 173 | |
a14ed312 | 174 | static void compare_sections_command (char *, int); |
c906108c | 175 | |
a14ed312 | 176 | static void packet_command (char *, int); |
c906108c | 177 | |
a14ed312 | 178 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 179 | |
39f77062 | 180 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 181 | |
a14ed312 | 182 | static void remote_find_new_threads (void); |
c906108c | 183 | |
a14ed312 | 184 | static void record_currthread (int currthread); |
c906108c | 185 | |
30559e10 | 186 | static int fromhex (int a); |
c906108c | 187 | |
dc8acb97 | 188 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 189 | |
dc8acb97 | 190 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 191 | |
a14ed312 | 192 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 193 | |
a14ed312 | 194 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 195 | |
5a2468f5 | 196 | struct packet_config; |
5a2468f5 | 197 | |
a14ed312 | 198 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 199 | |
d471ea57 | 200 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 201 | |
a14ed312 | 202 | void _initialize_remote (void); |
c906108c | 203 | |
694f61fb | 204 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
205 | target is open()ed, remote.c should create a per-target description |
206 | of the remote protocol using that target's architecture. | |
ce2826aa | 207 | Unfortunately, the target stack doesn't include local state. For |
d01949b6 AC |
208 | the moment keep the information in the target's architecture |
209 | object. Sigh.. */ | |
210 | ||
ad10f812 AC |
211 | struct packet_reg |
212 | { | |
213 | long offset; /* Offset into G packet. */ | |
214 | long regnum; /* GDB's internal register number. */ | |
215 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 216 | int in_g_packet; /* Always part of G packet. */ |
12c266ea | 217 | /* long size in bytes; == DEPRECATED_REGISTER_RAW_SIZE (regnum); at present. */ |
ad10f812 AC |
218 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
219 | }; | |
220 | ||
d01949b6 AC |
221 | struct remote_state |
222 | { | |
ad10f812 AC |
223 | /* Description of the remote protocol registers. */ |
224 | long sizeof_g_packet; | |
b323314b AC |
225 | |
226 | /* Description of the remote protocol registers indexed by REGNUM | |
227 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
228 | struct packet_reg *regs; | |
ad10f812 | 229 | |
d01949b6 AC |
230 | /* This is the size (in chars) of the first response to the ``g'' |
231 | packet. It is used as a heuristic when determining the maximum | |
232 | size of memory-read and memory-write packets. A target will | |
233 | typically only reserve a buffer large enough to hold the ``g'' | |
234 | packet. The size does not include packet overhead (headers and | |
235 | trailers). */ | |
236 | long actual_register_packet_size; | |
237 | ||
238 | /* This is the maximum size (in chars) of a non read/write packet. | |
239 | It is also used as a cap on the size of read/write packets. */ | |
240 | long remote_packet_size; | |
241 | }; | |
242 | ||
3c3bea1c | 243 | |
d01949b6 AC |
244 | /* Handle for retreving the remote protocol data from gdbarch. */ |
245 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
246 | ||
247 | static struct remote_state * | |
5ae5f592 | 248 | get_remote_state (void) |
d01949b6 | 249 | { |
451fbdda | 250 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
251 | } |
252 | ||
253 | static void * | |
254 | init_remote_state (struct gdbarch *gdbarch) | |
255 | { | |
256 | int regnum; | |
e5e78edc | 257 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state); |
d01949b6 | 258 | |
7d58c67d TR |
259 | if (DEPRECATED_REGISTER_BYTES != 0) |
260 | rs->sizeof_g_packet = DEPRECATED_REGISTER_BYTES; | |
261 | else | |
262 | rs->sizeof_g_packet = 0; | |
ad10f812 | 263 | |
b323314b | 264 | /* Assume a 1:1 regnum<->pnum table. */ |
e5e78edc AC |
265 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
266 | struct packet_reg); | |
b323314b | 267 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 268 | { |
b323314b AC |
269 | struct packet_reg *r = &rs->regs[regnum]; |
270 | r->pnum = regnum; | |
271 | r->regnum = regnum; | |
62700349 | 272 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 273 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 274 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d TR |
275 | |
276 | /* Compute packet size by accumulating the size of all registers. */ | |
277 | if (DEPRECATED_REGISTER_BYTES == 0) | |
278 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); | |
ad10f812 AC |
279 | } |
280 | ||
d01949b6 AC |
281 | /* Default maximum number of characters in a packet body. Many |
282 | remote stubs have a hardwired buffer size of 400 bytes | |
283 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
284 | as the maximum packet-size to ensure that the packet and an extra | |
285 | NUL character can always fit in the buffer. This stops GDB | |
286 | trashing stubs that try to squeeze an extra NUL into what is | |
287 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
288 | rs->remote_packet_size = 400 - 1; | |
289 | ||
ad10f812 AC |
290 | /* Should rs->sizeof_g_packet needs more space than the |
291 | default, adjust the size accordingly. Remember that each byte is | |
292 | encoded as two characters. 32 is the overhead for the packet | |
293 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 AC |
294 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
295 | little. */ | |
ad10f812 AC |
296 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
297 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
d01949b6 AC |
298 | |
299 | /* This one is filled in when a ``g'' packet is received. */ | |
300 | rs->actual_register_packet_size = 0; | |
301 | ||
302 | return rs; | |
303 | } | |
304 | ||
ad10f812 AC |
305 | static struct packet_reg * |
306 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
307 | { | |
b323314b AC |
308 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
309 | return NULL; | |
310 | else | |
ad10f812 | 311 | { |
b323314b AC |
312 | struct packet_reg *r = &rs->regs[regnum]; |
313 | gdb_assert (r->regnum == regnum); | |
314 | return r; | |
ad10f812 | 315 | } |
ad10f812 AC |
316 | } |
317 | ||
318 | static struct packet_reg * | |
319 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
320 | { | |
b323314b AC |
321 | int i; |
322 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 323 | { |
b323314b AC |
324 | struct packet_reg *r = &rs->regs[i]; |
325 | if (r->pnum == pnum) | |
326 | return r; | |
ad10f812 AC |
327 | } |
328 | return NULL; | |
d01949b6 AC |
329 | } |
330 | ||
3c3bea1c GS |
331 | /* FIXME: graces/2002-08-08: These variables should eventually be |
332 | bound to an instance of the target object (as in gdbarch-tdep()), | |
333 | when such a thing exists. */ | |
334 | ||
335 | /* This is set to the data address of the access causing the target | |
336 | to stop for a watchpoint. */ | |
337 | static CORE_ADDR remote_watch_data_address; | |
338 | ||
339 | /* This is non-zero if taregt stopped for a watchpoint. */ | |
340 | static int remote_stopped_by_watchpoint_p; | |
341 | ||
c906108c SS |
342 | |
343 | static struct target_ops remote_ops; | |
344 | ||
345 | static struct target_ops extended_remote_ops; | |
346 | ||
43ff13b4 JM |
347 | /* Temporary target ops. Just like the remote_ops and |
348 | extended_remote_ops, but with asynchronous support. */ | |
349 | static struct target_ops remote_async_ops; | |
350 | ||
351 | static struct target_ops extended_async_remote_ops; | |
352 | ||
6426a772 JM |
353 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
354 | ``forever'' still use the normal timeout mechanism. This is | |
355 | currently used by the ASYNC code to guarentee that target reads | |
356 | during the initial connect always time-out. Once getpkt has been | |
357 | modified to return a timeout indication and, in turn | |
358 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
359 | this can go away. */ | |
360 | static int wait_forever_enabled_p = 1; | |
361 | ||
362 | ||
c906108c SS |
363 | /* This variable chooses whether to send a ^C or a break when the user |
364 | requests program interruption. Although ^C is usually what remote | |
365 | systems expect, and that is the default here, sometimes a break is | |
366 | preferable instead. */ | |
367 | ||
368 | static int remote_break; | |
369 | ||
c906108c SS |
370 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
371 | remote_open knows that we don't have a file open when the program | |
372 | starts. */ | |
819cc324 | 373 | static struct serial *remote_desc = NULL; |
c906108c | 374 | |
0f71a2f6 JM |
375 | /* This is set by the target (thru the 'S' message) |
376 | to denote that the target is in kernel mode. */ | |
377 | static int cisco_kernel_mode = 0; | |
378 | ||
c906108c SS |
379 | /* This variable sets the number of bits in an address that are to be |
380 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
381 | leading zeros, the entire address would be sent. This variable | |
382 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
383 | initial implementation of remote.c restricted the address sent in | |
384 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
385 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
386 | address was never sent. Since fixing this bug may cause a break in | |
387 | some remote targets this variable is principly provided to | |
388 | facilitate backward compatibility. */ | |
389 | ||
390 | static int remote_address_size; | |
391 | ||
6426a772 JM |
392 | /* Tempoary to track who currently owns the terminal. See |
393 | target_async_terminal_* for more details. */ | |
394 | ||
395 | static int remote_async_terminal_ours_p; | |
396 | ||
11cf8741 | 397 | \f |
11cf8741 | 398 | /* User configurable variables for the number of characters in a |
ad10f812 AC |
399 | memory read/write packet. MIN ((rs->remote_packet_size), |
400 | rs->sizeof_g_packet) is the default. Some targets need smaller | |
401 | values (fifo overruns, et.al.) and some users need larger values | |
402 | (speed up transfers). The variables ``preferred_*'' (the user | |
403 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
404 | (Positive - a soft limit, negative - a hard limit). */ | |
11cf8741 JM |
405 | |
406 | struct memory_packet_config | |
407 | { | |
408 | char *name; | |
409 | long size; | |
410 | int fixed_p; | |
411 | }; | |
412 | ||
413 | /* Compute the current size of a read/write packet. Since this makes | |
414 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
415 | ||
416 | static long | |
417 | get_memory_packet_size (struct memory_packet_config *config) | |
418 | { | |
d01949b6 | 419 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
420 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
421 | law?) that some hosts don't cope very well with large alloca() | |
422 | calls. Eventually the alloca() code will be replaced by calls to | |
423 | xmalloc() and make_cleanups() allowing this restriction to either | |
424 | be lifted or removed. */ | |
425 | #ifndef MAX_REMOTE_PACKET_SIZE | |
426 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
427 | #endif | |
428 | /* NOTE: 16 is just chosen at random. */ | |
429 | #ifndef MIN_REMOTE_PACKET_SIZE | |
430 | #define MIN_REMOTE_PACKET_SIZE 16 | |
431 | #endif | |
432 | long what_they_get; | |
433 | if (config->fixed_p) | |
434 | { | |
435 | if (config->size <= 0) | |
436 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
437 | else | |
438 | what_they_get = config->size; | |
439 | } | |
440 | else | |
441 | { | |
d01949b6 | 442 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
443 | /* Limit the packet to the size specified by the user. */ |
444 | if (config->size > 0 | |
445 | && what_they_get > config->size) | |
446 | what_they_get = config->size; | |
447 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
448 | if ((rs->actual_register_packet_size) > 0 |
449 | && what_they_get > (rs->actual_register_packet_size)) | |
450 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
451 | } |
452 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
453 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
454 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
455 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
456 | return what_they_get; | |
457 | } | |
458 | ||
459 | /* Update the size of a read/write packet. If they user wants | |
460 | something really big then do a sanity check. */ | |
461 | ||
462 | static void | |
463 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
464 | { | |
465 | int fixed_p = config->fixed_p; | |
466 | long size = config->size; | |
467 | if (args == NULL) | |
468 | error ("Argument required (integer, `fixed' or `limited')."); | |
469 | else if (strcmp (args, "hard") == 0 | |
470 | || strcmp (args, "fixed") == 0) | |
471 | fixed_p = 1; | |
472 | else if (strcmp (args, "soft") == 0 | |
473 | || strcmp (args, "limit") == 0) | |
474 | fixed_p = 0; | |
475 | else | |
476 | { | |
477 | char *end; | |
478 | size = strtoul (args, &end, 0); | |
479 | if (args == end) | |
480 | error ("Invalid %s (bad syntax).", config->name); | |
481 | #if 0 | |
482 | /* Instead of explicitly capping the size of a packet to | |
483 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
484 | instead allowed to set the size to something arbitrarily | |
485 | large. */ | |
486 | if (size > MAX_REMOTE_PACKET_SIZE) | |
487 | error ("Invalid %s (too large).", config->name); | |
488 | #endif | |
489 | } | |
490 | /* Extra checks? */ | |
491 | if (fixed_p && !config->fixed_p) | |
492 | { | |
493 | if (! query ("The target may not be able to correctly handle a %s\n" | |
494 | "of %ld bytes. Change the packet size? ", | |
495 | config->name, size)) | |
496 | error ("Packet size not changed."); | |
497 | } | |
498 | /* Update the config. */ | |
499 | config->fixed_p = fixed_p; | |
500 | config->size = size; | |
501 | } | |
502 | ||
503 | static void | |
504 | show_memory_packet_size (struct memory_packet_config *config) | |
505 | { | |
506 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
507 | if (config->fixed_p) | |
508 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
509 | get_memory_packet_size (config)); | |
510 | else | |
511 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
512 | get_memory_packet_size (config)); | |
513 | } | |
514 | ||
515 | static struct memory_packet_config memory_write_packet_config = | |
516 | { | |
517 | "memory-write-packet-size", | |
518 | }; | |
519 | ||
520 | static void | |
521 | set_memory_write_packet_size (char *args, int from_tty) | |
522 | { | |
523 | set_memory_packet_size (args, &memory_write_packet_config); | |
524 | } | |
525 | ||
526 | static void | |
527 | show_memory_write_packet_size (char *args, int from_tty) | |
528 | { | |
529 | show_memory_packet_size (&memory_write_packet_config); | |
530 | } | |
531 | ||
532 | static long | |
533 | get_memory_write_packet_size (void) | |
534 | { | |
535 | return get_memory_packet_size (&memory_write_packet_config); | |
536 | } | |
537 | ||
538 | static struct memory_packet_config memory_read_packet_config = | |
539 | { | |
540 | "memory-read-packet-size", | |
541 | }; | |
542 | ||
543 | static void | |
544 | set_memory_read_packet_size (char *args, int from_tty) | |
545 | { | |
546 | set_memory_packet_size (args, &memory_read_packet_config); | |
547 | } | |
548 | ||
549 | static void | |
550 | show_memory_read_packet_size (char *args, int from_tty) | |
551 | { | |
552 | show_memory_packet_size (&memory_read_packet_config); | |
553 | } | |
554 | ||
555 | static long | |
556 | get_memory_read_packet_size (void) | |
557 | { | |
d01949b6 | 558 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
559 | long size = get_memory_packet_size (&memory_read_packet_config); |
560 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
561 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
562 | increased beyond (rs->remote_packet_size). */ |
563 | if (size > (rs->remote_packet_size)) | |
564 | size = (rs->remote_packet_size); | |
11cf8741 JM |
565 | return size; |
566 | } | |
567 | ||
11cf8741 | 568 | \f |
5a2468f5 JM |
569 | /* Generic configuration support for packets the stub optionally |
570 | supports. Allows the user to specify the use of the packet as well | |
571 | as allowing GDB to auto-detect support in the remote stub. */ | |
572 | ||
573 | enum packet_support | |
574 | { | |
575 | PACKET_SUPPORT_UNKNOWN = 0, | |
576 | PACKET_ENABLE, | |
577 | PACKET_DISABLE | |
578 | }; | |
579 | ||
5a2468f5 JM |
580 | struct packet_config |
581 | { | |
5a2468f5 JM |
582 | char *name; |
583 | char *title; | |
7f19b9a2 | 584 | enum auto_boolean detect; |
5a2468f5 JM |
585 | enum packet_support support; |
586 | }; | |
587 | ||
d471ea57 AC |
588 | /* Analyze a packet's return value and update the packet config |
589 | accordingly. */ | |
590 | ||
591 | enum packet_result | |
592 | { | |
593 | PACKET_ERROR, | |
594 | PACKET_OK, | |
595 | PACKET_UNKNOWN | |
596 | }; | |
597 | ||
5a2468f5 | 598 | static void |
d471ea57 | 599 | update_packet_config (struct packet_config *config) |
5a2468f5 | 600 | { |
d471ea57 AC |
601 | switch (config->detect) |
602 | { | |
7f19b9a2 | 603 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
604 | config->support = PACKET_ENABLE; |
605 | break; | |
7f19b9a2 | 606 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
607 | config->support = PACKET_DISABLE; |
608 | break; | |
7f19b9a2 | 609 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
610 | config->support = PACKET_SUPPORT_UNKNOWN; |
611 | break; | |
612 | } | |
5a2468f5 JM |
613 | } |
614 | ||
615 | static void | |
fba45db2 | 616 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
617 | { |
618 | char *support = "internal-error"; | |
619 | switch (config->support) | |
620 | { | |
621 | case PACKET_ENABLE: | |
622 | support = "enabled"; | |
623 | break; | |
624 | case PACKET_DISABLE: | |
625 | support = "disabled"; | |
626 | break; | |
627 | case PACKET_SUPPORT_UNKNOWN: | |
628 | support = "unknown"; | |
629 | break; | |
630 | } | |
631 | switch (config->detect) | |
632 | { | |
7f19b9a2 | 633 | case AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
634 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
635 | config->name, config->title, support); | |
636 | break; | |
7f19b9a2 AC |
637 | case AUTO_BOOLEAN_TRUE: |
638 | case AUTO_BOOLEAN_FALSE: | |
8e248173 | 639 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", |
5a2468f5 | 640 | config->name, config->title, support); |
8e248173 | 641 | break; |
5a2468f5 JM |
642 | } |
643 | } | |
644 | ||
645 | static void | |
d471ea57 AC |
646 | add_packet_config_cmd (struct packet_config *config, |
647 | char *name, | |
648 | char *title, | |
e9e68a56 AC |
649 | cmd_sfunc_ftype *set_func, |
650 | cmd_sfunc_ftype *show_func, | |
d471ea57 AC |
651 | struct cmd_list_element **set_remote_list, |
652 | struct cmd_list_element **show_remote_list, | |
653 | int legacy) | |
654 | { | |
655 | struct cmd_list_element *set_cmd; | |
656 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
657 | char *set_doc; |
658 | char *show_doc; | |
d471ea57 | 659 | char *cmd_name; |
5a2468f5 JM |
660 | config->name = name; |
661 | config->title = title; | |
7f19b9a2 | 662 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 663 | config->support = PACKET_SUPPORT_UNKNOWN; |
76995688 AC |
664 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
665 | name, title); | |
666 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
667 | name, title); | |
d471ea57 | 668 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 669 | xasprintf (&cmd_name, "%s-packet", title); |
e9e68a56 AC |
670 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
671 | &config->detect, set_doc, show_doc, | |
672 | set_func, show_func, | |
673 | set_remote_list, show_remote_list); | |
d471ea57 AC |
674 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ |
675 | if (legacy) | |
676 | { | |
677 | char *legacy_name; | |
76995688 | 678 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
679 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
680 | set_remote_list); | |
681 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
682 | show_remote_list); | |
683 | } | |
5a2468f5 JM |
684 | } |
685 | ||
d471ea57 AC |
686 | static enum packet_result |
687 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 688 | { |
d471ea57 | 689 | if (buf[0] != '\0') |
5a2468f5 | 690 | { |
d471ea57 AC |
691 | /* The stub recognized the packet request. Check that the |
692 | operation succeeded. */ | |
693 | switch (config->support) | |
694 | { | |
695 | case PACKET_SUPPORT_UNKNOWN: | |
696 | if (remote_debug) | |
697 | fprintf_unfiltered (gdb_stdlog, | |
698 | "Packet %s (%s) is supported\n", | |
699 | config->name, config->title); | |
700 | config->support = PACKET_ENABLE; | |
701 | break; | |
702 | case PACKET_DISABLE: | |
8e65ff28 AC |
703 | internal_error (__FILE__, __LINE__, |
704 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
705 | break; |
706 | case PACKET_ENABLE: | |
707 | break; | |
708 | } | |
709 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
710 | /* "OK" - definitly OK. */ | |
711 | return PACKET_OK; | |
712 | if (buf[0] == 'E' | |
713 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
714 | && buf[3] == '\0') | |
715 | /* "Enn" - definitly an error. */ | |
716 | return PACKET_ERROR; | |
717 | /* The packet may or may not be OK. Just assume it is */ | |
718 | return PACKET_OK; | |
719 | } | |
720 | else | |
721 | { | |
722 | /* The stub does not support the packet. */ | |
723 | switch (config->support) | |
724 | { | |
725 | case PACKET_ENABLE: | |
7f19b9a2 | 726 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 AC |
727 | /* If the stub previously indicated that the packet was |
728 | supported then there is a protocol error.. */ | |
729 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
730 | config->name, config->title); | |
731 | else | |
732 | /* The user set it wrong. */ | |
733 | error ("Enabled packet %s (%s) not recognized by stub", | |
734 | config->name, config->title); | |
735 | break; | |
736 | case PACKET_SUPPORT_UNKNOWN: | |
737 | if (remote_debug) | |
738 | fprintf_unfiltered (gdb_stdlog, | |
739 | "Packet %s (%s) is NOT supported\n", | |
740 | config->name, config->title); | |
741 | config->support = PACKET_DISABLE; | |
742 | break; | |
743 | case PACKET_DISABLE: | |
744 | break; | |
745 | } | |
746 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
747 | } |
748 | } | |
749 | ||
506fb367 DJ |
750 | /* Should we try the 'vCont' (descriptive resume) request? */ |
751 | static struct packet_config remote_protocol_vcont; | |
752 | ||
753 | static void | |
754 | set_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
755 | struct cmd_list_element *c) | |
756 | { | |
757 | update_packet_config (&remote_protocol_vcont); | |
758 | } | |
759 | ||
760 | static void | |
761 | show_remote_protocol_vcont_packet_cmd (char *args, int from_tty, | |
762 | struct cmd_list_element *c) | |
763 | { | |
764 | show_packet_config_cmd (&remote_protocol_vcont); | |
765 | } | |
766 | ||
dc8acb97 MS |
767 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
768 | static struct packet_config remote_protocol_qSymbol; | |
769 | ||
770 | static void | |
771 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
772 | struct cmd_list_element *c) | |
773 | { | |
774 | update_packet_config (&remote_protocol_qSymbol); | |
775 | } | |
776 | ||
777 | static void | |
e9e68a56 AC |
778 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, |
779 | struct cmd_list_element *c) | |
dc8acb97 MS |
780 | { |
781 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
782 | } | |
783 | ||
44eaed12 C |
784 | /* Should we try the 'e' (step over range) request? */ |
785 | static struct packet_config remote_protocol_e; | |
786 | ||
787 | static void | |
788 | set_remote_protocol_e_packet_cmd (char *args, int from_tty, | |
789 | struct cmd_list_element *c) | |
790 | { | |
791 | update_packet_config (&remote_protocol_e); | |
792 | } | |
793 | ||
794 | static void | |
e9e68a56 AC |
795 | show_remote_protocol_e_packet_cmd (char *args, int from_tty, |
796 | struct cmd_list_element *c) | |
44eaed12 C |
797 | { |
798 | show_packet_config_cmd (&remote_protocol_e); | |
799 | } | |
800 | ||
801 | ||
802 | /* Should we try the 'E' (step over range / w signal #) request? */ | |
803 | static struct packet_config remote_protocol_E; | |
804 | ||
805 | static void | |
806 | set_remote_protocol_E_packet_cmd (char *args, int from_tty, | |
807 | struct cmd_list_element *c) | |
808 | { | |
809 | update_packet_config (&remote_protocol_E); | |
810 | } | |
811 | ||
812 | static void | |
e9e68a56 AC |
813 | show_remote_protocol_E_packet_cmd (char *args, int from_tty, |
814 | struct cmd_list_element *c) | |
44eaed12 C |
815 | { |
816 | show_packet_config_cmd (&remote_protocol_E); | |
817 | } | |
818 | ||
819 | ||
5a2468f5 JM |
820 | /* Should we try the 'P' (set register) request? */ |
821 | ||
822 | static struct packet_config remote_protocol_P; | |
823 | ||
824 | static void | |
fba45db2 KB |
825 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
826 | struct cmd_list_element *c) | |
5a2468f5 | 827 | { |
d471ea57 | 828 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
829 | } |
830 | ||
831 | static void | |
e9e68a56 AC |
832 | show_remote_protocol_P_packet_cmd (char *args, int from_tty, |
833 | struct cmd_list_element *c) | |
5a2468f5 JM |
834 | { |
835 | show_packet_config_cmd (&remote_protocol_P); | |
836 | } | |
837 | ||
d471ea57 AC |
838 | /* Should we try one of the 'Z' requests? */ |
839 | ||
840 | enum Z_packet_type | |
841 | { | |
842 | Z_PACKET_SOFTWARE_BP, | |
843 | Z_PACKET_HARDWARE_BP, | |
844 | Z_PACKET_WRITE_WP, | |
845 | Z_PACKET_READ_WP, | |
846 | Z_PACKET_ACCESS_WP, | |
847 | NR_Z_PACKET_TYPES | |
848 | }; | |
96baa820 | 849 | |
d471ea57 AC |
850 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
851 | ||
852 | /* FIXME: Instead of having all these boiler plate functions, the | |
853 | command callback should include a context argument. */ | |
854 | ||
855 | static void | |
856 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
857 | struct cmd_list_element *c) | |
858 | { | |
859 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
860 | } | |
861 | ||
862 | static void | |
e9e68a56 AC |
863 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, |
864 | struct cmd_list_element *c) | |
d471ea57 AC |
865 | { |
866 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
867 | } | |
868 | ||
869 | static void | |
870 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
871 | struct cmd_list_element *c) | |
872 | { | |
873 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
874 | } | |
875 | ||
876 | static void | |
e9e68a56 AC |
877 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, |
878 | struct cmd_list_element *c) | |
d471ea57 AC |
879 | { |
880 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
881 | } | |
882 | ||
883 | static void | |
884 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
885 | struct cmd_list_element *c) | |
886 | { | |
887 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
888 | } | |
889 | ||
890 | static void | |
e9e68a56 AC |
891 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, |
892 | struct cmd_list_element *c) | |
d471ea57 AC |
893 | { |
894 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
895 | } | |
896 | ||
897 | static void | |
898 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
899 | struct cmd_list_element *c) | |
900 | { | |
901 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
902 | } | |
903 | ||
904 | static void | |
e9e68a56 AC |
905 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, |
906 | struct cmd_list_element *c) | |
d471ea57 AC |
907 | { |
908 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
909 | } | |
910 | ||
911 | static void | |
912 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
913 | struct cmd_list_element *c) | |
914 | { | |
915 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
916 | } | |
917 | ||
918 | static void | |
e9e68a56 AC |
919 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, |
920 | struct cmd_list_element *c) | |
d471ea57 AC |
921 | { |
922 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
923 | } | |
924 | ||
925 | /* For compatibility with older distributions. Provide a ``set remote | |
926 | Z-packet ...'' command that updates all the Z packet types. */ | |
927 | ||
7f19b9a2 | 928 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
929 | |
930 | static void | |
fba45db2 KB |
931 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
932 | struct cmd_list_element *c) | |
96baa820 | 933 | { |
d471ea57 AC |
934 | int i; |
935 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
936 | { | |
937 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
938 | update_packet_config (&remote_protocol_Z[i]); | |
939 | } | |
96baa820 JM |
940 | } |
941 | ||
942 | static void | |
e9e68a56 AC |
943 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
944 | struct cmd_list_element *c) | |
96baa820 | 945 | { |
d471ea57 AC |
946 | int i; |
947 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
948 | { | |
949 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
950 | } | |
96baa820 JM |
951 | } |
952 | ||
953 | /* Should we try the 'X' (remote binary download) packet? | |
954 | ||
955 | This variable (available to the user via "set remote X-packet") | |
956 | dictates whether downloads are sent in binary (via the 'X' packet). | |
957 | We assume that the stub can, and attempt to do it. This will be | |
958 | cleared if the stub does not understand it. This switch is still | |
959 | needed, though in cases when the packet is supported in the stub, | |
960 | but the connection does not allow it (i.e., 7-bit serial connection | |
961 | only). */ | |
962 | ||
963 | static struct packet_config remote_protocol_binary_download; | |
964 | ||
9d1f7ab2 MS |
965 | /* Should we try the 'ThreadInfo' query packet? |
966 | ||
967 | This variable (NOT available to the user: auto-detect only!) | |
968 | determines whether GDB will use the new, simpler "ThreadInfo" | |
969 | query or the older, more complex syntax for thread queries. | |
970 | This is an auto-detect variable (set to true at each connect, | |
971 | and set to false when the target fails to recognize it). */ | |
972 | ||
973 | static int use_threadinfo_query; | |
974 | static int use_threadextra_query; | |
975 | ||
96baa820 JM |
976 | static void |
977 | set_remote_protocol_binary_download_cmd (char *args, | |
978 | int from_tty, | |
979 | struct cmd_list_element *c) | |
980 | { | |
d471ea57 | 981 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
982 | } |
983 | ||
984 | static void | |
e9e68a56 AC |
985 | show_remote_protocol_binary_download_cmd (char *args, int from_tty, |
986 | struct cmd_list_element *c) | |
96baa820 JM |
987 | { |
988 | show_packet_config_cmd (&remote_protocol_binary_download); | |
989 | } | |
990 | ||
c906108c | 991 | |
43ff13b4 | 992 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
ae44c0c4 AC |
993 | static void *sigint_remote_twice_token; |
994 | static void *sigint_remote_token; | |
43ff13b4 | 995 | |
c906108c SS |
996 | /* These are pointers to hook functions that may be set in order to |
997 | modify resume/wait behavior for a particular architecture. */ | |
998 | ||
507f3c78 KB |
999 | void (*target_resume_hook) (void); |
1000 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
1001 | \f |
1002 | ||
c5aa993b | 1003 | |
c906108c SS |
1004 | /* These are the threads which we last sent to the remote system. |
1005 | -1 for all or -2 for not sent yet. */ | |
1006 | static int general_thread; | |
cce74817 | 1007 | static int continue_thread; |
c906108c SS |
1008 | |
1009 | /* Call this function as a result of | |
1010 | 1) A halt indication (T packet) containing a thread id | |
1011 | 2) A direct query of currthread | |
1012 | 3) Successful execution of set thread | |
1013 | */ | |
1014 | ||
1015 | static void | |
fba45db2 | 1016 | record_currthread (int currthread) |
c906108c | 1017 | { |
c906108c | 1018 | general_thread = currthread; |
cce74817 | 1019 | |
c906108c SS |
1020 | /* If this is a new thread, add it to GDB's thread list. |
1021 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1022 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1023 | { |
39f77062 | 1024 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1025 | ui_out_text (uiout, "[New "); |
39f77062 | 1026 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1027 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1028 | } |
c906108c SS |
1029 | } |
1030 | ||
1031 | #define MAGIC_NULL_PID 42000 | |
1032 | ||
1033 | static void | |
fba45db2 | 1034 | set_thread (int th, int gen) |
c906108c | 1035 | { |
d01949b6 AC |
1036 | struct remote_state *rs = get_remote_state (); |
1037 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 1038 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1039 | |
1040 | if (state == th) | |
1041 | return; | |
1042 | ||
1043 | buf[0] = 'H'; | |
1044 | buf[1] = gen ? 'g' : 'c'; | |
1045 | if (th == MAGIC_NULL_PID) | |
1046 | { | |
1047 | buf[2] = '0'; | |
1048 | buf[3] = '\0'; | |
1049 | } | |
1050 | else if (th < 0) | |
1051 | sprintf (&buf[2], "-%x", -th); | |
1052 | else | |
1053 | sprintf (&buf[2], "%x", th); | |
1054 | putpkt (buf); | |
d01949b6 | 1055 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1056 | if (gen) |
c5aa993b | 1057 | general_thread = th; |
c906108c | 1058 | else |
cce74817 | 1059 | continue_thread = th; |
c906108c SS |
1060 | } |
1061 | \f | |
1062 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1063 | ||
1064 | static int | |
39f77062 | 1065 | remote_thread_alive (ptid_t ptid) |
c906108c | 1066 | { |
39f77062 | 1067 | int tid = PIDGET (ptid); |
cce74817 | 1068 | char buf[16]; |
c906108c | 1069 | |
cce74817 JM |
1070 | if (tid < 0) |
1071 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 1072 | else |
cce74817 | 1073 | sprintf (buf, "T%08x", tid); |
c906108c | 1074 | putpkt (buf); |
c2d11a7d | 1075 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
1076 | return (buf[0] == 'O' && buf[1] == 'K'); |
1077 | } | |
1078 | ||
1079 | /* About these extended threadlist and threadinfo packets. They are | |
1080 | variable length packets but, the fields within them are often fixed | |
1081 | length. They are redundent enough to send over UDP as is the | |
1082 | remote protocol in general. There is a matching unit test module | |
1083 | in libstub. */ | |
1084 | ||
cce74817 JM |
1085 | #define OPAQUETHREADBYTES 8 |
1086 | ||
1087 | /* a 64 bit opaque identifier */ | |
1088 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1089 | ||
1090 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1091 | protocol encoding, and remote.c. it is not particularly changable */ | |
1092 | ||
1093 | /* Right now, the internal structure is int. We want it to be bigger. | |
1094 | Plan to fix this. | |
c5aa993b | 1095 | */ |
cce74817 | 1096 | |
c5aa993b | 1097 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1098 | |
9d1f7ab2 | 1099 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1100 | equivalint to the reply of the remote threadinfo packet */ |
1101 | ||
1102 | struct gdb_ext_thread_info | |
c5aa993b JM |
1103 | { |
1104 | threadref threadid; /* External form of thread reference */ | |
1105 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1106 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1107 | char shortname[32]; /* To be used to name threads */ | |
1108 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1109 | }; | |
cce74817 JM |
1110 | |
1111 | /* The volume of remote transfers can be limited by submitting | |
1112 | a mask containing bits specifying the desired information. | |
1113 | Use a union of these values as the 'selection' parameter to | |
1114 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1115 | */ |
cce74817 JM |
1116 | |
1117 | #define TAG_THREADID 1 | |
1118 | #define TAG_EXISTS 2 | |
1119 | #define TAG_DISPLAY 4 | |
1120 | #define TAG_THREADNAME 8 | |
c5aa993b | 1121 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1122 | |
c906108c SS |
1123 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1124 | ||
b2dd6311 | 1125 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1126 | |
a14ed312 | 1127 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1128 | |
a14ed312 | 1129 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1130 | |
a14ed312 | 1131 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1132 | |
a14ed312 | 1133 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1134 | |
a14ed312 | 1135 | static char *pack_int (char *buf, int value); |
cce74817 | 1136 | |
a14ed312 | 1137 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1138 | |
a14ed312 | 1139 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1140 | |
a14ed312 | 1141 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1142 | |
a14ed312 | 1143 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1144 | |
a14ed312 | 1145 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1146 | |
a14ed312 | 1147 | static int threadref_to_int (threadref * ref); |
cce74817 | 1148 | |
a14ed312 | 1149 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1150 | |
a14ed312 | 1151 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1152 | |
a14ed312 | 1153 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1154 | |
a14ed312 KB |
1155 | static int remote_unpack_thread_info_response (char *pkt, |
1156 | threadref * expectedref, | |
1157 | struct gdb_ext_thread_info | |
1158 | *info); | |
cce74817 JM |
1159 | |
1160 | ||
a14ed312 KB |
1161 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1162 | struct gdb_ext_thread_info *info); | |
cce74817 | 1163 | |
a14ed312 KB |
1164 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1165 | int selection, | |
1166 | struct gdb_ext_thread_info *info); | |
cce74817 | 1167 | |
a14ed312 KB |
1168 | static char *pack_threadlist_request (char *pkt, int startflag, |
1169 | int threadcount, | |
1170 | threadref * nextthread); | |
cce74817 | 1171 | |
a14ed312 KB |
1172 | static int parse_threadlist_response (char *pkt, |
1173 | int result_limit, | |
1174 | threadref * original_echo, | |
1175 | threadref * resultlist, int *doneflag); | |
cce74817 | 1176 | |
a14ed312 KB |
1177 | static int remote_get_threadlist (int startflag, |
1178 | threadref * nextthread, | |
1179 | int result_limit, | |
1180 | int *done, | |
1181 | int *result_count, threadref * threadlist); | |
cce74817 | 1182 | |
c5aa993b | 1183 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1184 | |
a14ed312 KB |
1185 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1186 | void *context, int looplimit); | |
cce74817 | 1187 | |
a14ed312 | 1188 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1189 | |
c906108c SS |
1190 | /* encode 64 bits in 16 chars of hex */ |
1191 | ||
1192 | static const char hexchars[] = "0123456789abcdef"; | |
1193 | ||
1194 | static int | |
fba45db2 | 1195 | ishex (int ch, int *val) |
c906108c SS |
1196 | { |
1197 | if ((ch >= 'a') && (ch <= 'f')) | |
1198 | { | |
1199 | *val = ch - 'a' + 10; | |
1200 | return 1; | |
1201 | } | |
1202 | if ((ch >= 'A') && (ch <= 'F')) | |
1203 | { | |
1204 | *val = ch - 'A' + 10; | |
1205 | return 1; | |
1206 | } | |
1207 | if ((ch >= '0') && (ch <= '9')) | |
1208 | { | |
1209 | *val = ch - '0'; | |
1210 | return 1; | |
1211 | } | |
1212 | return 0; | |
1213 | } | |
1214 | ||
1215 | static int | |
fba45db2 | 1216 | stubhex (int ch) |
c906108c SS |
1217 | { |
1218 | if (ch >= 'a' && ch <= 'f') | |
1219 | return ch - 'a' + 10; | |
1220 | if (ch >= '0' && ch <= '9') | |
1221 | return ch - '0'; | |
1222 | if (ch >= 'A' && ch <= 'F') | |
1223 | return ch - 'A' + 10; | |
1224 | return -1; | |
1225 | } | |
1226 | ||
1227 | static int | |
fba45db2 | 1228 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1229 | { |
1230 | int nibble; | |
1231 | int retval = 0; | |
1232 | ||
1233 | while (fieldlength) | |
1234 | { | |
1235 | nibble = stubhex (*buff++); | |
1236 | retval |= nibble; | |
1237 | fieldlength--; | |
1238 | if (fieldlength) | |
1239 | retval = retval << 4; | |
1240 | } | |
1241 | return retval; | |
1242 | } | |
1243 | ||
1244 | char * | |
fba45db2 | 1245 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1246 | ULONGEST *result) |
c906108c SS |
1247 | { |
1248 | int nibble; | |
1249 | int retval = 0; | |
1250 | ||
1251 | while (ishex (*buff, &nibble)) | |
1252 | { | |
1253 | buff++; | |
1254 | retval = retval << 4; | |
1255 | retval |= nibble & 0x0f; | |
1256 | } | |
1257 | *result = retval; | |
1258 | return buff; | |
1259 | } | |
1260 | ||
1261 | static char * | |
fba45db2 | 1262 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1263 | { |
1264 | ishex (*buf++, val); | |
1265 | return buf; | |
1266 | } | |
1267 | ||
1268 | static char * | |
fba45db2 | 1269 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1270 | { |
1271 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1272 | return buf; | |
1273 | } | |
1274 | ||
1275 | static char * | |
fba45db2 | 1276 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1277 | { |
1278 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1279 | *pkt++ = hexchars[(byte & 0xf)]; | |
1280 | return pkt; | |
1281 | } | |
1282 | ||
1283 | static char * | |
fba45db2 | 1284 | unpack_byte (char *buf, int *value) |
c906108c SS |
1285 | { |
1286 | *value = stub_unpack_int (buf, 2); | |
1287 | return buf + 2; | |
1288 | } | |
1289 | ||
1290 | static char * | |
fba45db2 | 1291 | pack_int (char *buf, int value) |
c906108c SS |
1292 | { |
1293 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1294 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1295 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1296 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1297 | return buf; | |
1298 | } | |
1299 | ||
1300 | static char * | |
fba45db2 | 1301 | unpack_int (char *buf, int *value) |
c906108c SS |
1302 | { |
1303 | *value = stub_unpack_int (buf, 8); | |
1304 | return buf + 8; | |
1305 | } | |
1306 | ||
c5aa993b | 1307 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1308 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1309 | |
1310 | static char * | |
fba45db2 | 1311 | pack_string (char *pkt, char *string) |
c906108c SS |
1312 | { |
1313 | char ch; | |
1314 | int len; | |
1315 | ||
1316 | len = strlen (string); | |
1317 | if (len > 200) | |
1318 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1319 | pkt = pack_hex_byte (pkt, len); | |
1320 | while (len-- > 0) | |
1321 | { | |
1322 | ch = *string++; | |
1323 | if ((ch == '\0') || (ch == '#')) | |
1324 | ch = '*'; /* Protect encapsulation */ | |
1325 | *pkt++ = ch; | |
1326 | } | |
1327 | return pkt; | |
1328 | } | |
1329 | #endif /* 0 (unused) */ | |
1330 | ||
1331 | static char * | |
fba45db2 | 1332 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1333 | { |
1334 | while (length--) | |
1335 | *dest++ = *src++; | |
1336 | *dest = '\0'; | |
1337 | return src; | |
1338 | } | |
1339 | ||
1340 | static char * | |
fba45db2 | 1341 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1342 | { |
1343 | char *limit; | |
1344 | unsigned char *altid; | |
1345 | ||
1346 | altid = (unsigned char *) id; | |
1347 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1348 | while (pkt < limit) | |
1349 | pkt = pack_hex_byte (pkt, *altid++); | |
1350 | return pkt; | |
1351 | } | |
1352 | ||
1353 | ||
1354 | static char * | |
fba45db2 | 1355 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1356 | { |
1357 | char *altref; | |
1358 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1359 | int x, y; | |
1360 | ||
1361 | altref = (char *) id; | |
1362 | ||
1363 | while (inbuf < limit) | |
1364 | { | |
1365 | x = stubhex (*inbuf++); | |
1366 | y = stubhex (*inbuf++); | |
1367 | *altref++ = (x << 4) | y; | |
1368 | } | |
1369 | return inbuf; | |
1370 | } | |
1371 | ||
1372 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1373 | ints. This is due to a mismatch of specifications. We would like | |
1374 | to use 64bit thread references internally. This is an adapter | |
1375 | function. */ | |
1376 | ||
1377 | void | |
fba45db2 | 1378 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1379 | { |
1380 | unsigned char *scan; | |
1381 | ||
1382 | scan = (unsigned char *) id; | |
1383 | { | |
1384 | int i = 4; | |
1385 | while (i--) | |
1386 | *scan++ = 0; | |
1387 | } | |
1388 | *scan++ = (value >> 24) & 0xff; | |
1389 | *scan++ = (value >> 16) & 0xff; | |
1390 | *scan++ = (value >> 8) & 0xff; | |
1391 | *scan++ = (value & 0xff); | |
1392 | } | |
1393 | ||
1394 | static int | |
fba45db2 | 1395 | threadref_to_int (threadref *ref) |
c906108c SS |
1396 | { |
1397 | int i, value = 0; | |
1398 | unsigned char *scan; | |
1399 | ||
1400 | scan = (char *) ref; | |
1401 | scan += 4; | |
1402 | i = 4; | |
1403 | while (i-- > 0) | |
1404 | value = (value << 8) | ((*scan++) & 0xff); | |
1405 | return value; | |
1406 | } | |
1407 | ||
1408 | static void | |
fba45db2 | 1409 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1410 | { |
1411 | int i; | |
1412 | unsigned char *csrc, *cdest; | |
1413 | ||
1414 | csrc = (unsigned char *) src; | |
1415 | cdest = (unsigned char *) dest; | |
1416 | i = 8; | |
1417 | while (i--) | |
1418 | *cdest++ = *csrc++; | |
1419 | } | |
1420 | ||
1421 | static int | |
fba45db2 | 1422 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1423 | { |
1424 | /* things are broken right now, so just assume we got a match */ | |
1425 | #if 0 | |
1426 | unsigned char *srcp, *destp; | |
1427 | int i, result; | |
1428 | srcp = (char *) src; | |
1429 | destp = (char *) dest; | |
1430 | ||
1431 | result = 1; | |
1432 | while (i-- > 0) | |
1433 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1434 | return result; | |
1435 | #endif | |
1436 | return 1; | |
1437 | } | |
1438 | ||
1439 | /* | |
c5aa993b JM |
1440 | threadid:1, # always request threadid |
1441 | context_exists:2, | |
1442 | display:4, | |
1443 | unique_name:8, | |
1444 | more_display:16 | |
1445 | */ | |
c906108c SS |
1446 | |
1447 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1448 | ||
1449 | static char * | |
fba45db2 | 1450 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1451 | { |
1452 | *pkt++ = 'q'; /* Info Query */ | |
1453 | *pkt++ = 'P'; /* process or thread info */ | |
1454 | pkt = pack_int (pkt, mode); /* mode */ | |
1455 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1456 | *pkt = '\0'; /* terminate */ | |
1457 | return pkt; | |
1458 | } | |
1459 | ||
1460 | /* These values tag the fields in a thread info response packet */ | |
1461 | /* Tagging the fields allows us to request specific fields and to | |
1462 | add more fields as time goes by */ | |
1463 | ||
c5aa993b JM |
1464 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1465 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1466 | fetch registers and its stack */ | |
1467 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1468 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1469 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1470 | the process */ | |
c906108c SS |
1471 | |
1472 | static int | |
fba45db2 KB |
1473 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1474 | struct gdb_ext_thread_info *info) | |
c906108c | 1475 | { |
d01949b6 | 1476 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1477 | int mask, length; |
1478 | unsigned int tag; | |
1479 | threadref ref; | |
d01949b6 | 1480 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1481 | int retval = 1; |
1482 | ||
1483 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1484 | info->active = 0; | |
1485 | info->display[0] = '\0'; | |
1486 | info->shortname[0] = '\0'; | |
1487 | info->more_display[0] = '\0'; | |
1488 | ||
1489 | /* Assume the characters indicating the packet type have been stripped */ | |
1490 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1491 | pkt = unpack_threadid (pkt, &ref); | |
1492 | ||
1493 | if (mask == 0) | |
1494 | warning ("Incomplete response to threadinfo request\n"); | |
1495 | if (!threadmatch (&ref, expectedref)) | |
1496 | { /* This is an answer to a different request */ | |
1497 | warning ("ERROR RMT Thread info mismatch\n"); | |
1498 | return 0; | |
1499 | } | |
1500 | copy_threadref (&info->threadid, &ref); | |
1501 | ||
1502 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1503 | ||
c5aa993b | 1504 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1505 | { |
1506 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1507 | pkt = unpack_byte (pkt, &length); /* length */ | |
1508 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1509 | { | |
1510 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1511 | retval = 0; | |
1512 | break; | |
1513 | } | |
1514 | if (tag == TAG_THREADID) | |
1515 | { | |
1516 | if (length != 16) | |
1517 | { | |
1518 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1519 | retval = 0; | |
1520 | break; | |
1521 | } | |
1522 | pkt = unpack_threadid (pkt, &ref); | |
1523 | mask = mask & ~TAG_THREADID; | |
1524 | continue; | |
1525 | } | |
1526 | if (tag == TAG_EXISTS) | |
1527 | { | |
1528 | info->active = stub_unpack_int (pkt, length); | |
1529 | pkt += length; | |
1530 | mask = mask & ~(TAG_EXISTS); | |
1531 | if (length > 8) | |
1532 | { | |
1533 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1534 | retval = 0; | |
1535 | break; | |
1536 | } | |
1537 | continue; | |
1538 | } | |
1539 | if (tag == TAG_THREADNAME) | |
1540 | { | |
1541 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1542 | mask = mask & ~TAG_THREADNAME; | |
1543 | continue; | |
1544 | } | |
1545 | if (tag == TAG_DISPLAY) | |
1546 | { | |
1547 | pkt = unpack_string (pkt, &info->display[0], length); | |
1548 | mask = mask & ~TAG_DISPLAY; | |
1549 | continue; | |
1550 | } | |
1551 | if (tag == TAG_MOREDISPLAY) | |
1552 | { | |
1553 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1554 | mask = mask & ~TAG_MOREDISPLAY; | |
1555 | continue; | |
1556 | } | |
1557 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1558 | break; /* Not a tag we know about */ | |
1559 | } | |
1560 | return retval; | |
1561 | } | |
1562 | ||
1563 | static int | |
fba45db2 KB |
1564 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1565 | struct gdb_ext_thread_info *info) | |
c906108c | 1566 | { |
d01949b6 | 1567 | struct remote_state *rs = get_remote_state (); |
c906108c | 1568 | int result; |
d01949b6 | 1569 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1570 | |
1571 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1572 | putpkt (threadinfo_pkt); | |
d01949b6 | 1573 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1574 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1575 | info); | |
1576 | return result; | |
1577 | } | |
1578 | ||
1579 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1580 | representation of a threadid. */ | |
1581 | ||
1582 | static int | |
fba45db2 KB |
1583 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1584 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1585 | { |
1586 | threadref lclref; | |
1587 | ||
1588 | int_to_threadref (&lclref, *ref); | |
1589 | return remote_get_threadinfo (&lclref, selection, info); | |
1590 | } | |
1591 | ||
1592 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1593 | ||
1594 | static char * | |
fba45db2 KB |
1595 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1596 | threadref *nextthread) | |
c906108c SS |
1597 | { |
1598 | *pkt++ = 'q'; /* info query packet */ | |
1599 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1600 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1601 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1602 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1603 | *pkt = '\0'; | |
1604 | return pkt; | |
1605 | } | |
1606 | ||
1607 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1608 | ||
1609 | static int | |
fba45db2 KB |
1610 | parse_threadlist_response (char *pkt, int result_limit, |
1611 | threadref *original_echo, threadref *resultlist, | |
1612 | int *doneflag) | |
c906108c | 1613 | { |
d01949b6 | 1614 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1615 | char *limit; |
1616 | int count, resultcount, done; | |
1617 | ||
1618 | resultcount = 0; | |
1619 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1620 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1621 | pkt = unpack_byte (pkt, &count); /* count field */ |
1622 | pkt = unpack_nibble (pkt, &done); | |
1623 | /* The first threadid is the argument threadid. */ | |
1624 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1625 | while ((count-- > 0) && (pkt < limit)) | |
1626 | { | |
1627 | pkt = unpack_threadid (pkt, resultlist++); | |
1628 | if (resultcount++ >= result_limit) | |
1629 | break; | |
1630 | } | |
1631 | if (doneflag) | |
1632 | *doneflag = done; | |
1633 | return resultcount; | |
1634 | } | |
1635 | ||
1636 | static int | |
fba45db2 KB |
1637 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1638 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1639 | { |
d01949b6 | 1640 | struct remote_state *rs = get_remote_state (); |
c906108c | 1641 | static threadref echo_nextthread; |
d01949b6 AC |
1642 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1643 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1644 | int result = 1; |
1645 | ||
1646 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1647 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1648 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1649 | |
1650 | pack_threadlist_request (threadlist_packet, | |
1651 | startflag, result_limit, nextthread); | |
1652 | putpkt (threadlist_packet); | |
d01949b6 | 1653 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1654 | |
1655 | *result_count = | |
1656 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1657 | threadlist, done); | |
1658 | ||
1659 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1660 | { | |
1661 | /* FIXME: This is a good reason to drop the packet */ | |
1662 | /* Possably, there is a duplicate response */ | |
1663 | /* Possabilities : | |
1664 | retransmit immediatly - race conditions | |
1665 | retransmit after timeout - yes | |
1666 | exit | |
1667 | wait for packet, then exit | |
1668 | */ | |
1669 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1670 | return 0; /* I choose simply exiting */ | |
1671 | } | |
1672 | if (*result_count <= 0) | |
1673 | { | |
1674 | if (*done != 1) | |
1675 | { | |
1676 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1677 | result = 0; | |
1678 | } | |
1679 | return result; /* break; */ | |
1680 | } | |
1681 | if (*result_count > result_limit) | |
1682 | { | |
1683 | *result_count = 0; | |
1684 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1685 | return 0; | |
1686 | } | |
1687 | return result; | |
1688 | } | |
1689 | ||
1690 | /* This is the interface between remote and threads, remotes upper interface */ | |
1691 | ||
1692 | /* remote_find_new_threads retrieves the thread list and for each | |
1693 | thread in the list, looks up the thread in GDB's internal list, | |
1694 | ading the thread if it does not already exist. This involves | |
1695 | getting partial thread lists from the remote target so, polling the | |
1696 | quit_flag is required. */ | |
1697 | ||
1698 | ||
1699 | /* About this many threadisds fit in a packet. */ | |
1700 | ||
1701 | #define MAXTHREADLISTRESULTS 32 | |
1702 | ||
1703 | static int | |
fba45db2 KB |
1704 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1705 | int looplimit) | |
c906108c SS |
1706 | { |
1707 | int done, i, result_count; | |
1708 | int startflag = 1; | |
1709 | int result = 1; | |
1710 | int loopcount = 0; | |
1711 | static threadref nextthread; | |
1712 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1713 | ||
1714 | done = 0; | |
1715 | while (!done) | |
1716 | { | |
1717 | if (loopcount++ > looplimit) | |
1718 | { | |
1719 | result = 0; | |
1720 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1721 | break; | |
1722 | } | |
1723 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1724 | &done, &result_count, resultthreadlist)) | |
1725 | { | |
1726 | result = 0; | |
1727 | break; | |
1728 | } | |
1729 | /* clear for later iterations */ | |
1730 | startflag = 0; | |
1731 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1732 | if (result_count >= 1) | |
1733 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1734 | i = 0; | |
1735 | while (result_count--) | |
1736 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1737 | break; | |
1738 | } | |
1739 | return result; | |
1740 | } | |
1741 | ||
1742 | static int | |
fba45db2 | 1743 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1744 | { |
39f77062 | 1745 | ptid_t ptid; |
c906108c | 1746 | |
39f77062 KB |
1747 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1748 | ||
1749 | if (!in_thread_list (ptid)) | |
1750 | add_thread (ptid); | |
c906108c SS |
1751 | return 1; /* continue iterator */ |
1752 | } | |
1753 | ||
1754 | #define CRAZY_MAX_THREADS 1000 | |
1755 | ||
39f77062 KB |
1756 | static ptid_t |
1757 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1758 | { |
d01949b6 AC |
1759 | struct remote_state *rs = get_remote_state (); |
1760 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1761 | |
1762 | putpkt ("qC"); | |
d01949b6 | 1763 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1764 | if (buf[0] == 'Q' && buf[1] == 'C') |
39f77062 | 1765 | return pid_to_ptid (strtol (&buf[2], NULL, 16)); |
c906108c SS |
1766 | else |
1767 | return oldpid; | |
1768 | } | |
1769 | ||
9d1f7ab2 MS |
1770 | /* Find new threads for info threads command. |
1771 | * Original version, using John Metzler's thread protocol. | |
1772 | */ | |
cce74817 JM |
1773 | |
1774 | static void | |
fba45db2 | 1775 | remote_find_new_threads (void) |
c906108c | 1776 | { |
c5aa993b JM |
1777 | remote_threadlist_iterator (remote_newthread_step, 0, |
1778 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1779 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1780 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1781 | } |
1782 | ||
9d1f7ab2 MS |
1783 | /* |
1784 | * Find all threads for info threads command. | |
1785 | * Uses new thread protocol contributed by Cisco. | |
1786 | * Falls back and attempts to use the older method (above) | |
1787 | * if the target doesn't respond to the new method. | |
1788 | */ | |
1789 | ||
0f71a2f6 JM |
1790 | static void |
1791 | remote_threads_info (void) | |
1792 | { | |
d01949b6 AC |
1793 | struct remote_state *rs = get_remote_state (); |
1794 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1795 | char *bufp; |
0f71a2f6 JM |
1796 | int tid; |
1797 | ||
1798 | if (remote_desc == 0) /* paranoia */ | |
1799 | error ("Command can only be used when connected to the remote target."); | |
1800 | ||
9d1f7ab2 MS |
1801 | if (use_threadinfo_query) |
1802 | { | |
1803 | putpkt ("qfThreadInfo"); | |
1804 | bufp = buf; | |
d01949b6 | 1805 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1806 | if (bufp[0] != '\0') /* q packet recognized */ |
1807 | { | |
1808 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1809 | { | |
1810 | do | |
1811 | { | |
1812 | tid = strtol (bufp, &bufp, 16); | |
39f77062 KB |
1813 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1814 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1815 | } |
1816 | while (*bufp++ == ','); /* comma-separated list */ | |
1817 | putpkt ("qsThreadInfo"); | |
1818 | bufp = buf; | |
d01949b6 | 1819 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1820 | } |
1821 | return; /* done */ | |
1822 | } | |
1823 | } | |
1824 | ||
1825 | /* Else fall back to old method based on jmetzler protocol. */ | |
1826 | use_threadinfo_query = 0; | |
1827 | remote_find_new_threads (); | |
1828 | return; | |
1829 | } | |
1830 | ||
1831 | /* | |
1832 | * Collect a descriptive string about the given thread. | |
1833 | * The target may say anything it wants to about the thread | |
1834 | * (typically info about its blocked / runnable state, name, etc.). | |
1835 | * This string will appear in the info threads display. | |
1836 | * | |
1837 | * Optional: targets are not required to implement this function. | |
1838 | */ | |
1839 | ||
1840 | static char * | |
1841 | remote_threads_extra_info (struct thread_info *tp) | |
1842 | { | |
d01949b6 | 1843 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1844 | int result; |
1845 | int set; | |
1846 | threadref id; | |
1847 | struct gdb_ext_thread_info threadinfo; | |
1848 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1849 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1850 | int n = 0; /* position in display_buf */ |
1851 | ||
1852 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1853 | internal_error (__FILE__, __LINE__, |
1854 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1855 | |
1856 | if (use_threadextra_query) | |
1857 | { | |
39f77062 | 1858 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1859 | putpkt (bufp); |
d01949b6 | 1860 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1861 | if (bufp[0] != 0) |
1862 | { | |
30559e10 MS |
1863 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1864 | result = hex2bin (bufp, display_buf, n); | |
1865 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1866 | return display_buf; |
1867 | } | |
0f71a2f6 | 1868 | } |
9d1f7ab2 MS |
1869 | |
1870 | /* If the above query fails, fall back to the old method. */ | |
1871 | use_threadextra_query = 0; | |
1872 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1873 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1874 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1875 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1876 | if (threadinfo.active) | |
0f71a2f6 | 1877 | { |
9d1f7ab2 MS |
1878 | if (*threadinfo.shortname) |
1879 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1880 | if (*threadinfo.display) | |
1881 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1882 | if (*threadinfo.more_display) | |
1883 | n += sprintf(&display_buf[n], " Priority: %s", | |
1884 | threadinfo.more_display); | |
1885 | ||
1886 | if (n > 0) | |
c5aa993b | 1887 | { |
9d1f7ab2 MS |
1888 | /* for purely cosmetic reasons, clear up trailing commas */ |
1889 | if (',' == display_buf[n-1]) | |
1890 | display_buf[n-1] = ' '; | |
1891 | return display_buf; | |
c5aa993b | 1892 | } |
0f71a2f6 | 1893 | } |
9d1f7ab2 | 1894 | return NULL; |
0f71a2f6 | 1895 | } |
9d1f7ab2 | 1896 | |
c906108c | 1897 | \f |
c5aa993b | 1898 | |
c906108c SS |
1899 | /* Restart the remote side; this is an extended protocol operation. */ |
1900 | ||
1901 | static void | |
fba45db2 | 1902 | extended_remote_restart (void) |
c906108c | 1903 | { |
d01949b6 AC |
1904 | struct remote_state *rs = get_remote_state (); |
1905 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1906 | |
1907 | /* Send the restart command; for reasons I don't understand the | |
1908 | remote side really expects a number after the "R". */ | |
1909 | buf[0] = 'R'; | |
1910 | sprintf (&buf[1], "%x", 0); | |
1911 | putpkt (buf); | |
1912 | ||
1913 | /* Now query for status so this looks just like we restarted | |
1914 | gdbserver from scratch. */ | |
1915 | putpkt ("?"); | |
d01949b6 | 1916 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1917 | } |
1918 | \f | |
1919 | /* Clean up connection to a remote debugger. */ | |
1920 | ||
c906108c | 1921 | static void |
fba45db2 | 1922 | remote_close (int quitting) |
c906108c SS |
1923 | { |
1924 | if (remote_desc) | |
2cd58942 | 1925 | serial_close (remote_desc); |
c906108c SS |
1926 | remote_desc = NULL; |
1927 | } | |
1928 | ||
1929 | /* Query the remote side for the text, data and bss offsets. */ | |
1930 | ||
1931 | static void | |
fba45db2 | 1932 | get_offsets (void) |
c906108c | 1933 | { |
d01949b6 AC |
1934 | struct remote_state *rs = get_remote_state (); |
1935 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1936 | char *ptr; |
c906108c SS |
1937 | int lose; |
1938 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1939 | struct section_offsets *offs; | |
1940 | ||
1941 | putpkt ("qOffsets"); | |
1942 | ||
d01949b6 | 1943 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1944 | |
1945 | if (buf[0] == '\000') | |
1946 | return; /* Return silently. Stub doesn't support | |
1947 | this command. */ | |
1948 | if (buf[0] == 'E') | |
1949 | { | |
1950 | warning ("Remote failure reply: %s", buf); | |
1951 | return; | |
1952 | } | |
1953 | ||
1954 | /* Pick up each field in turn. This used to be done with scanf, but | |
1955 | scanf will make trouble if CORE_ADDR size doesn't match | |
1956 | conversion directives correctly. The following code will work | |
1957 | with any size of CORE_ADDR. */ | |
1958 | text_addr = data_addr = bss_addr = 0; | |
1959 | ptr = buf; | |
1960 | lose = 0; | |
1961 | ||
1962 | if (strncmp (ptr, "Text=", 5) == 0) | |
1963 | { | |
1964 | ptr += 5; | |
1965 | /* Don't use strtol, could lose on big values. */ | |
1966 | while (*ptr && *ptr != ';') | |
1967 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1968 | } | |
1969 | else | |
1970 | lose = 1; | |
1971 | ||
1972 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1973 | { | |
1974 | ptr += 6; | |
1975 | while (*ptr && *ptr != ';') | |
1976 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1977 | } | |
1978 | else | |
1979 | lose = 1; | |
1980 | ||
1981 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1982 | { | |
1983 | ptr += 5; | |
1984 | while (*ptr && *ptr != ';') | |
1985 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1986 | } | |
1987 | else | |
1988 | lose = 1; | |
1989 | ||
1990 | if (lose) | |
1991 | error ("Malformed response to offset query, %s", buf); | |
1992 | ||
1993 | if (symfile_objfile == NULL) | |
1994 | return; | |
1995 | ||
a39a16c4 MM |
1996 | offs = ((struct section_offsets *) |
1997 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); | |
1998 | memcpy (offs, symfile_objfile->section_offsets, | |
1999 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); | |
c906108c | 2000 | |
a4c8257b | 2001 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
2002 | |
2003 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2004 | because that's what nlmconv does now. The real solution requires changes | |
2005 | to the stub and remote.c that I don't have time to do right now. */ | |
2006 | ||
a4c8257b EZ |
2007 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
2008 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
2009 | |
2010 | objfile_relocate (symfile_objfile, offs); | |
2011 | } | |
2012 | ||
0f71a2f6 JM |
2013 | /* |
2014 | * Cisco version of section offsets: | |
2015 | * | |
2016 | * Instead of having GDB query the target for the section offsets, | |
2017 | * Cisco lets the target volunteer the information! It's also in | |
2018 | * a different format, so here are the functions that will decode | |
2019 | * a section offset packet from a Cisco target. | |
2020 | */ | |
2021 | ||
2022 | /* | |
2023 | * Function: remote_cisco_section_offsets | |
2024 | * | |
2025 | * Returns: zero for success, non-zero for failure | |
2026 | */ | |
2027 | ||
c5aa993b | 2028 | static int |
c2d11a7d JM |
2029 | remote_cisco_section_offsets (bfd_vma text_addr, |
2030 | bfd_vma data_addr, | |
2031 | bfd_vma bss_addr, | |
2032 | bfd_signed_vma *text_offs, | |
2033 | bfd_signed_vma *data_offs, | |
2034 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
2035 | { |
2036 | bfd_vma text_base, data_base, bss_base; | |
2037 | struct minimal_symbol *start; | |
2038 | asection *sect; | |
c5aa993b | 2039 | bfd *abfd; |
0f71a2f6 | 2040 | int len; |
0f71a2f6 JM |
2041 | |
2042 | if (symfile_objfile == NULL) | |
c5aa993b | 2043 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
2044 | |
2045 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
2046 | if (start == NULL) | |
c5aa993b | 2047 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
2048 | |
2049 | data_base = bss_base = 0; | |
2050 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
2051 | ||
2052 | abfd = symfile_objfile->obfd; | |
c5aa993b | 2053 | for (sect = abfd->sections; |
0f71a2f6 JM |
2054 | sect != 0; |
2055 | sect = sect->next) | |
2056 | { | |
ce359b09 | 2057 | const char *p = bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
2058 | len = strlen (p); |
2059 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
2060 | if (data_base == 0 || | |
2061 | data_base > bfd_get_section_vma (abfd, sect)) | |
2062 | data_base = bfd_get_section_vma (abfd, sect); | |
2063 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 2064 | if (bss_base == 0 || |
0f71a2f6 JM |
2065 | bss_base > bfd_get_section_vma (abfd, sect)) |
2066 | bss_base = bfd_get_section_vma (abfd, sect); | |
2067 | } | |
2068 | *text_offs = text_addr - text_base; | |
2069 | *data_offs = data_addr - data_base; | |
c5aa993b | 2070 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
2071 | if (remote_debug) |
2072 | { | |
2073 | char tmp[128]; | |
2074 | ||
2075 | sprintf (tmp, "VMA: text = 0x"); | |
2076 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 2077 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 2078 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 2079 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 | 2080 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
306d9ac5 | 2081 | fputs_filtered (tmp, gdb_stdlog); |
0f71a2f6 | 2082 | fprintf_filtered (gdb_stdlog, |
d4f3574e SS |
2083 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
2084 | paddr_nz (*text_offs), | |
2085 | paddr_nz (*data_offs), | |
2086 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
2087 | } |
2088 | ||
2089 | return 0; | |
2090 | } | |
2091 | ||
2092 | /* | |
2093 | * Function: remote_cisco_objfile_relocate | |
2094 | * | |
2095 | * Relocate the symbol file for a remote target. | |
2096 | */ | |
2097 | ||
96baa820 | 2098 | void |
fba45db2 KB |
2099 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
2100 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
2101 | { |
2102 | struct section_offsets *offs; | |
2103 | ||
c5aa993b | 2104 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2105 | { |
2106 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
2107 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
2108 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 2109 | |
a39a16c4 MM |
2110 | offs = (struct section_offsets *) |
2111 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); | |
2112 | memcpy (offs, symfile_objfile->section_offsets, | |
2113 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); | |
0f71a2f6 | 2114 | |
a4c8257b EZ |
2115 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
2116 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
2117 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
2118 | |
2119 | /* First call the standard objfile_relocate. */ | |
2120 | objfile_relocate (symfile_objfile, offs); | |
2121 | ||
2122 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
2123 | the exec target. These entries will control memory transfers |
2124 | from the exec file. */ | |
0f71a2f6 JM |
2125 | |
2126 | exec_set_section_offsets (text_off, data_off, bss_off); | |
2127 | } | |
2128 | } | |
2129 | ||
c906108c SS |
2130 | /* Stub for catch_errors. */ |
2131 | ||
0f71a2f6 | 2132 | static int |
36918e70 | 2133 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 JM |
2134 | { |
2135 | start_remote (); /* Initialize gdb process mechanisms */ | |
36918e70 AC |
2136 | /* NOTE: Return something >=0. A -ve value is reserved for |
2137 | catch_exceptions. */ | |
0f71a2f6 JM |
2138 | return 1; |
2139 | } | |
2140 | ||
c906108c | 2141 | static int |
36918e70 | 2142 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 2143 | { |
8edbea78 | 2144 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2145 | |
2146 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2147 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2148 | |
2149 | /* Let the stub know that we want it to return the thread. */ | |
2150 | set_thread (-1, 0); | |
2151 | ||
39f77062 | 2152 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2153 | |
2154 | get_offsets (); /* Get text, data & bss offsets */ | |
2155 | ||
2156 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2157 | immediate_quit--; |
c906108c | 2158 | |
36918e70 AC |
2159 | /* NOTE: See comment above in remote_start_remote_dummy(). This |
2160 | function returns something >=0. */ | |
2161 | return remote_start_remote_dummy (uiout, dummy); | |
c906108c SS |
2162 | } |
2163 | ||
2164 | /* Open a connection to a remote debugger. | |
2165 | NAME is the filename used for communication. */ | |
2166 | ||
2167 | static void | |
fba45db2 | 2168 | remote_open (char *name, int from_tty) |
c906108c | 2169 | { |
92d1e331 | 2170 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2171 | } |
2172 | ||
43ff13b4 JM |
2173 | /* Just like remote_open, but with asynchronous support. */ |
2174 | static void | |
fba45db2 | 2175 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2176 | { |
92d1e331 | 2177 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2178 | } |
2179 | ||
c906108c SS |
2180 | /* Open a connection to a remote debugger using the extended |
2181 | remote gdb protocol. NAME is the filename used for communication. */ | |
2182 | ||
2183 | static void | |
fba45db2 | 2184 | extended_remote_open (char *name, int from_tty) |
c906108c | 2185 | { |
92d1e331 DJ |
2186 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2187 | 0 /* async_p */); | |
c906108c SS |
2188 | } |
2189 | ||
43ff13b4 JM |
2190 | /* Just like extended_remote_open, but with asynchronous support. */ |
2191 | static void | |
fba45db2 | 2192 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2193 | { |
92d1e331 DJ |
2194 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2195 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2196 | } |
2197 | ||
c906108c SS |
2198 | /* Generic code for opening a connection to a remote target. */ |
2199 | ||
d471ea57 AC |
2200 | static void |
2201 | init_all_packet_configs (void) | |
2202 | { | |
2203 | int i; | |
44eaed12 C |
2204 | update_packet_config (&remote_protocol_e); |
2205 | update_packet_config (&remote_protocol_E); | |
d471ea57 | 2206 | update_packet_config (&remote_protocol_P); |
dc8acb97 | 2207 | update_packet_config (&remote_protocol_qSymbol); |
506fb367 | 2208 | update_packet_config (&remote_protocol_vcont); |
d471ea57 AC |
2209 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2210 | update_packet_config (&remote_protocol_Z[i]); | |
2211 | /* Force remote_write_bytes to check whether target supports binary | |
2212 | downloading. */ | |
2213 | update_packet_config (&remote_protocol_binary_download); | |
2214 | } | |
2215 | ||
dc8acb97 MS |
2216 | /* Symbol look-up. */ |
2217 | ||
2218 | static void | |
2219 | remote_check_symbols (struct objfile *objfile) | |
2220 | { | |
d01949b6 | 2221 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2222 | char *msg, *reply, *tmp; |
2223 | struct minimal_symbol *sym; | |
2224 | int end; | |
2225 | ||
2226 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2227 | return; | |
2228 | ||
d01949b6 AC |
2229 | msg = alloca (rs->remote_packet_size); |
2230 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2231 | |
2232 | /* Invite target to request symbol lookups. */ | |
2233 | ||
2234 | putpkt ("qSymbol::"); | |
d01949b6 | 2235 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2236 | packet_ok (reply, &remote_protocol_qSymbol); |
2237 | ||
2238 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2239 | { | |
2240 | tmp = &reply[8]; | |
2241 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2242 | msg[end] = '\0'; | |
2243 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2244 | if (sym == NULL) | |
2245 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2246 | else | |
2247 | sprintf (msg, "qSymbol:%s:%s", | |
2248 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
2249 | &reply[8]); | |
2250 | putpkt (msg); | |
d01949b6 | 2251 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2252 | } |
2253 | } | |
2254 | ||
9db8d71f DJ |
2255 | static struct serial * |
2256 | remote_serial_open (char *name) | |
2257 | { | |
2258 | static int udp_warning = 0; | |
2259 | ||
2260 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2261 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2262 | serial connection is reliable and not the serial connection promising | |
2263 | to be. */ | |
2264 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2265 | { | |
2266 | warning ("The remote protocol may be unreliable over UDP."); | |
2267 | warning ("Some events may be lost, rendering further debugging " | |
2268 | "impossible."); | |
2269 | udp_warning = 1; | |
2270 | } | |
2271 | ||
2272 | return serial_open (name); | |
2273 | } | |
2274 | ||
c906108c | 2275 | static void |
fba45db2 | 2276 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2277 | int extended_p, int async_p) |
c906108c | 2278 | { |
36918e70 | 2279 | int ex; |
d01949b6 | 2280 | struct remote_state *rs = get_remote_state (); |
c906108c | 2281 | if (name == 0) |
22e04375 AC |
2282 | error ("To open a remote debug connection, you need to specify what\n" |
2283 | "serial device is attached to the remote system\n" | |
2284 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2285 | |
6426a772 | 2286 | /* See FIXME above */ |
92d1e331 DJ |
2287 | if (!async_p) |
2288 | wait_forever_enabled_p = 1; | |
6426a772 | 2289 | |
c906108c SS |
2290 | target_preopen (from_tty); |
2291 | ||
2292 | unpush_target (target); | |
2293 | ||
9db8d71f | 2294 | remote_desc = remote_serial_open (name); |
c906108c SS |
2295 | if (!remote_desc) |
2296 | perror_with_name (name); | |
2297 | ||
2298 | if (baud_rate != -1) | |
2299 | { | |
2cd58942 | 2300 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2301 | { |
9b74d5d3 KB |
2302 | /* The requested speed could not be set. Error out to |
2303 | top level after closing remote_desc. Take care to | |
2304 | set remote_desc to NULL to avoid closing remote_desc | |
2305 | more than once. */ | |
2cd58942 | 2306 | serial_close (remote_desc); |
9b74d5d3 | 2307 | remote_desc = NULL; |
c906108c SS |
2308 | perror_with_name (name); |
2309 | } | |
2310 | } | |
2311 | ||
2cd58942 | 2312 | serial_raw (remote_desc); |
c906108c SS |
2313 | |
2314 | /* If there is something sitting in the buffer we might take it as a | |
2315 | response to a command, which would be bad. */ | |
2cd58942 | 2316 | serial_flush_input (remote_desc); |
c906108c SS |
2317 | |
2318 | if (from_tty) | |
2319 | { | |
2320 | puts_filtered ("Remote debugging using "); | |
2321 | puts_filtered (name); | |
2322 | puts_filtered ("\n"); | |
2323 | } | |
c5aa993b | 2324 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2325 | |
d471ea57 | 2326 | init_all_packet_configs (); |
96baa820 | 2327 | |
c5aa993b | 2328 | general_thread = -2; |
cce74817 | 2329 | continue_thread = -2; |
c906108c | 2330 | |
9d1f7ab2 MS |
2331 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2332 | use_threadinfo_query = 1; | |
2333 | use_threadextra_query = 1; | |
2334 | ||
c906108c SS |
2335 | /* Without this, some commands which require an active target (such |
2336 | as kill) won't work. This variable serves (at least) double duty | |
2337 | as both the pid of the target process (if it has such), and as a | |
2338 | flag indicating that a target is active. These functions should | |
2339 | be split out into seperate variables, especially since GDB will | |
2340 | someday have a notion of debugging several processes. */ | |
2341 | ||
39f77062 | 2342 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2343 | |
2344 | if (async_p) | |
2345 | { | |
2346 | /* With this target we start out by owning the terminal. */ | |
2347 | remote_async_terminal_ours_p = 1; | |
2348 | ||
2349 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2350 | assumed that the target is already ready and able to respond to | |
2351 | requests. Unfortunately remote_start_remote() eventually calls | |
2352 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2353 | around this. Eventually a mechanism that allows | |
2354 | wait_for_inferior() to expect/get timeouts will be | |
2355 | implemented. */ | |
2356 | wait_forever_enabled_p = 0; | |
2357 | } | |
2358 | ||
f78f6cf1 MS |
2359 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2360 | /* First delete any symbols previously loaded from shared libraries. */ | |
2361 | no_shared_libraries (NULL, 0); | |
2362 | #endif | |
2363 | ||
36918e70 | 2364 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2365 | target (we'd otherwise be in an inconsistent state) and then |
2366 | propogate the error on up the exception chain. This ensures that | |
2367 | the caller doesn't stumble along blindly assuming that the | |
2368 | function succeeded. The CLI doesn't have this problem but other | |
2369 | UI's, such as MI do. | |
36918e70 AC |
2370 | |
2371 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2372 | this function should return an error indication letting the | |
ce2826aa | 2373 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2374 | ``target remote'' is directly wired to this function making that |
2375 | impossible. On a positive note, the CLI side of this problem has | |
2376 | been fixed - the function set_cmd_context() makes it possible for | |
2377 | all the ``target ....'' commands to share a common callback | |
2378 | function. See cli-dump.c. */ | |
2379 | ex = catch_exceptions (uiout, | |
2380 | remote_start_remote, NULL, | |
2381 | "Couldn't establish connection to remote" | |
2382 | " target\n", | |
2383 | RETURN_MASK_ALL); | |
2384 | if (ex < 0) | |
c906108c SS |
2385 | { |
2386 | pop_target (); | |
92d1e331 DJ |
2387 | if (async_p) |
2388 | wait_forever_enabled_p = 1; | |
165b8e33 | 2389 | throw_exception (ex); |
c906108c SS |
2390 | } |
2391 | ||
92d1e331 DJ |
2392 | if (async_p) |
2393 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2394 | |
2395 | if (extended_p) | |
43ff13b4 | 2396 | { |
6240bebf | 2397 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2398 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2399 | putpkt ("!"); |
d01949b6 | 2400 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2401 | } |
f78f6cf1 | 2402 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2403 | /* FIXME: need a master target_open vector from which all |
2404 | remote_opens can be called, so that stuff like this can | |
2405 | go there. Failing that, the following code must be copied | |
2406 | to the open function for any remote target that wants to | |
2407 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2408 | |
2409 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2410 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2411 | { |
2412 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2413 | remote_check_symbols (symfile_objfile); | |
2414 | } | |
6240bebf | 2415 | #endif |
43ff13b4 JM |
2416 | } |
2417 | ||
c906108c SS |
2418 | /* This takes a program previously attached to and detaches it. After |
2419 | this is done, GDB can be used to debug some other program. We | |
2420 | better not have left any breakpoints in the target program or it'll | |
2421 | die when it hits one. */ | |
2422 | ||
2423 | static void | |
fba45db2 | 2424 | remote_detach (char *args, int from_tty) |
c906108c | 2425 | { |
d01949b6 AC |
2426 | struct remote_state *rs = get_remote_state (); |
2427 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2428 | |
2429 | if (args) | |
2430 | error ("Argument given to \"detach\" when remotely debugging."); | |
2431 | ||
2432 | /* Tell the remote target to detach. */ | |
2433 | strcpy (buf, "D"); | |
d01949b6 | 2434 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2435 | |
6ad8ae5c DJ |
2436 | /* Unregister the file descriptor from the event loop. */ |
2437 | if (target_is_async_p ()) | |
2438 | serial_async (remote_desc, NULL, 0); | |
2439 | ||
cca728d0 | 2440 | target_mourn_inferior (); |
c906108c SS |
2441 | if (from_tty) |
2442 | puts_filtered ("Ending remote debugging.\n"); | |
2443 | } | |
2444 | ||
6ad8ae5c DJ |
2445 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2446 | ||
43ff13b4 | 2447 | static void |
6ad8ae5c | 2448 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2449 | { |
d01949b6 AC |
2450 | struct remote_state *rs = get_remote_state (); |
2451 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2452 | |
2453 | if (args) | |
2454 | error ("Argument given to \"detach\" when remotely debugging."); | |
2455 | ||
43ff13b4 | 2456 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2457 | if (target_is_async_p ()) |
2cd58942 | 2458 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2459 | |
cca728d0 | 2460 | target_mourn_inferior (); |
43ff13b4 JM |
2461 | if (from_tty) |
2462 | puts_filtered ("Ending remote debugging.\n"); | |
2463 | } | |
2464 | ||
c906108c SS |
2465 | /* Convert hex digit A to a number. */ |
2466 | ||
30559e10 | 2467 | static int |
fba45db2 | 2468 | fromhex (int a) |
c906108c SS |
2469 | { |
2470 | if (a >= '0' && a <= '9') | |
2471 | return a - '0'; | |
2472 | else if (a >= 'a' && a <= 'f') | |
2473 | return a - 'a' + 10; | |
2474 | else if (a >= 'A' && a <= 'F') | |
2475 | return a - 'A' + 10; | |
c5aa993b | 2476 | else |
c906108c SS |
2477 | error ("Reply contains invalid hex digit %d", a); |
2478 | } | |
2479 | ||
30559e10 MS |
2480 | static int |
2481 | hex2bin (const char *hex, char *bin, int count) | |
2482 | { | |
2483 | int i; | |
2484 | ||
30559e10 MS |
2485 | for (i = 0; i < count; i++) |
2486 | { | |
2487 | if (hex[0] == 0 || hex[1] == 0) | |
2488 | { | |
2489 | /* Hex string is short, or of uneven length. | |
2490 | Return the count that has been converted so far. */ | |
2491 | return i; | |
2492 | } | |
2493 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2494 | hex += 2; | |
2495 | } | |
2496 | return i; | |
2497 | } | |
2498 | ||
c906108c SS |
2499 | /* Convert number NIB to a hex digit. */ |
2500 | ||
2501 | static int | |
fba45db2 | 2502 | tohex (int nib) |
c906108c SS |
2503 | { |
2504 | if (nib < 10) | |
c5aa993b | 2505 | return '0' + nib; |
c906108c | 2506 | else |
c5aa993b | 2507 | return 'a' + nib - 10; |
c906108c | 2508 | } |
30559e10 MS |
2509 | |
2510 | static int | |
234fa6d1 | 2511 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2512 | { |
2513 | int i; | |
2514 | /* May use a length, or a nul-terminated string as input. */ | |
2515 | if (count == 0) | |
2516 | count = strlen (bin); | |
2517 | ||
2518 | for (i = 0; i < count; i++) | |
2519 | { | |
2520 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2521 | *hex++ = tohex (*bin++ & 0xf); | |
2522 | } | |
2523 | *hex = 0; | |
2524 | return i; | |
2525 | } | |
c906108c | 2526 | \f |
506fb367 DJ |
2527 | /* Check for the availability of vCont. This function should also check |
2528 | the response. */ | |
c906108c SS |
2529 | |
2530 | static void | |
506fb367 | 2531 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2532 | { |
506fb367 DJ |
2533 | strcpy (buf, "vCont?"); |
2534 | putpkt (buf); | |
2535 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2536 | |
506fb367 DJ |
2537 | /* Make sure that the features we assume are supported. */ |
2538 | if (strncmp (buf, "vCont", 5) == 0) | |
2539 | { | |
2540 | char *p = &buf[5]; | |
2541 | int support_s, support_S, support_c, support_C; | |
2542 | ||
2543 | support_s = 0; | |
2544 | support_S = 0; | |
2545 | support_c = 0; | |
2546 | support_C = 0; | |
2547 | while (p && *p == ';') | |
2548 | { | |
2549 | p++; | |
2550 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2551 | support_s = 1; | |
2552 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2553 | support_S = 1; | |
2554 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2555 | support_c = 1; | |
2556 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2557 | support_C = 1; | |
2558 | ||
2559 | p = strchr (p, ';'); | |
2560 | } | |
c906108c | 2561 | |
506fb367 DJ |
2562 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2563 | BUF will make packet_ok disable the packet. */ | |
2564 | if (!support_s || !support_S || !support_c || !support_C) | |
2565 | buf[0] = 0; | |
2566 | } | |
c906108c | 2567 | |
506fb367 DJ |
2568 | packet_ok (buf, &remote_protocol_vcont); |
2569 | } | |
c906108c | 2570 | |
506fb367 DJ |
2571 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2572 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2573 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2574 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2575 | signalled is given in the global INFERIOR_PTID. This function returns | |
2576 | non-zero iff it resumes the inferior. | |
44eaed12 | 2577 | |
506fb367 DJ |
2578 | This function issues a strict subset of all possible vCont commands at the |
2579 | moment. */ | |
44eaed12 | 2580 | |
506fb367 DJ |
2581 | static int |
2582 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2583 | { | |
2584 | struct remote_state *rs = get_remote_state (); | |
2585 | int pid = PIDGET (ptid); | |
2586 | char *buf = NULL; | |
2587 | struct cleanup *old_cleanup; | |
44eaed12 | 2588 | |
506fb367 DJ |
2589 | buf = xmalloc (rs->remote_packet_size); |
2590 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2591 | |
506fb367 DJ |
2592 | if (remote_protocol_vcont.support == PACKET_SUPPORT_UNKNOWN) |
2593 | remote_vcont_probe (rs, buf); | |
44eaed12 | 2594 | |
506fb367 DJ |
2595 | if (remote_protocol_vcont.support == PACKET_DISABLE) |
2596 | { | |
2597 | do_cleanups (old_cleanup); | |
2598 | return 0; | |
44eaed12 C |
2599 | } |
2600 | ||
506fb367 DJ |
2601 | /* If we could generate a wider range of packets, we'd have to worry |
2602 | about overflowing BUF. Should there be a generic | |
2603 | "multi-part-packet" packet? */ | |
2604 | ||
2605 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2606 | { |
506fb367 DJ |
2607 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2608 | don't have any PID numbers the inferior will understand. Make sure | |
2609 | to only send forms that do not specify a PID. */ | |
2610 | if (step && siggnal != TARGET_SIGNAL_0) | |
2611 | sprintf (buf, "vCont;S%02x", siggnal); | |
2612 | else if (step) | |
2613 | sprintf (buf, "vCont;s"); | |
2614 | else if (siggnal != TARGET_SIGNAL_0) | |
2615 | sprintf (buf, "vCont;C%02x", siggnal); | |
2616 | else | |
2617 | sprintf (buf, "vCont;c"); | |
2618 | } | |
2619 | else if (pid == -1) | |
2620 | { | |
2621 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2622 | if (step && siggnal != TARGET_SIGNAL_0) | |
2623 | sprintf (buf, "vCont;S%02x:%x;c", siggnal, PIDGET (inferior_ptid)); | |
2624 | else if (step) | |
2625 | sprintf (buf, "vCont;s:%x;c", PIDGET (inferior_ptid)); | |
2626 | else if (siggnal != TARGET_SIGNAL_0) | |
2627 | sprintf (buf, "vCont;C%02x:%x;c", siggnal, PIDGET (inferior_ptid)); | |
2628 | else | |
2629 | sprintf (buf, "vCont;c"); | |
c906108c SS |
2630 | } |
2631 | else | |
506fb367 DJ |
2632 | { |
2633 | /* Scheduler locking; resume only PTID. */ | |
2634 | if (step && siggnal != TARGET_SIGNAL_0) | |
2635 | sprintf (buf, "vCont;S%02x:%x", siggnal, pid); | |
2636 | else if (step) | |
2637 | sprintf (buf, "vCont;s:%x", pid); | |
2638 | else if (siggnal != TARGET_SIGNAL_0) | |
2639 | sprintf (buf, "vCont;C%02x:%x", siggnal, pid); | |
2640 | else | |
2641 | sprintf (buf, "vCont;c:%x", pid); | |
2642 | } | |
c906108c SS |
2643 | |
2644 | putpkt (buf); | |
506fb367 DJ |
2645 | |
2646 | do_cleanups (old_cleanup); | |
2647 | ||
2648 | return 1; | |
c906108c | 2649 | } |
43ff13b4 | 2650 | |
506fb367 DJ |
2651 | /* Tell the remote machine to resume. */ |
2652 | ||
2653 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2654 | ||
2655 | static int last_sent_step; | |
2656 | ||
43ff13b4 | 2657 | static void |
506fb367 | 2658 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2659 | { |
d01949b6 AC |
2660 | struct remote_state *rs = get_remote_state (); |
2661 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2662 | int pid = PIDGET (ptid); |
44eaed12 | 2663 | char *p; |
43ff13b4 | 2664 | |
43ff13b4 JM |
2665 | last_sent_signal = siggnal; |
2666 | last_sent_step = step; | |
2667 | ||
2668 | /* A hook for when we need to do something at the last moment before | |
2669 | resumption. */ | |
2670 | if (target_resume_hook) | |
2671 | (*target_resume_hook) (); | |
2672 | ||
506fb367 DJ |
2673 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2674 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2675 | return; | |
2676 | ||
2677 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2678 | if (pid == -1) | |
2679 | set_thread (0, 0); /* run any thread */ | |
2680 | else | |
2681 | set_thread (pid, 0); /* run this thread */ | |
2682 | ||
44eaed12 C |
2683 | /* The s/S/c/C packets do not return status. So if the target does |
2684 | not support the S or C packets, the debug agent returns an empty | |
2685 | string which is detected in remote_wait(). This protocol defect | |
2686 | is fixed in the e/E packets. */ | |
2687 | ||
2688 | if (step && step_range_end) | |
2689 | { | |
2690 | /* If the target does not support the 'E' packet, we try the 'S' | |
2691 | packet. Ideally we would fall back to the 'e' packet if that | |
2692 | too is not supported. But that would require another copy of | |
2693 | the code to issue the 'e' packet (and fall back to 's' if not | |
2694 | supported) in remote_wait(). */ | |
2695 | ||
2696 | if (siggnal != TARGET_SIGNAL_0) | |
2697 | { | |
2698 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2699 | { | |
2700 | p = buf; | |
2701 | *p++ = 'E'; | |
2702 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2703 | *p++ = tohex (((int) siggnal) & 0xf); | |
2704 | *p++ = ','; | |
2705 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2706 | *p++ = ','; | |
2707 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2708 | *p++ = 0; | |
2709 | ||
2710 | putpkt (buf); | |
d01949b6 | 2711 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2712 | |
234fa6d1 | 2713 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
506fb367 | 2714 | return; |
44eaed12 C |
2715 | } |
2716 | } | |
2717 | else | |
2718 | { | |
2719 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2720 | { | |
2721 | p = buf; | |
2722 | *p++ = 'e'; | |
2723 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2724 | *p++ = ','; | |
2725 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2726 | *p++ = 0; | |
2727 | ||
2728 | putpkt (buf); | |
d01949b6 | 2729 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2730 | |
234fa6d1 | 2731 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
506fb367 | 2732 | return; |
44eaed12 C |
2733 | } |
2734 | } | |
2735 | } | |
2736 | ||
43ff13b4 JM |
2737 | if (siggnal != TARGET_SIGNAL_0) |
2738 | { | |
2739 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2740 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2741 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2742 | buf[3] = '\0'; |
2743 | } | |
2744 | else | |
c5aa993b | 2745 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2746 | |
44eaed12 | 2747 | putpkt (buf); |
506fb367 DJ |
2748 | } |
2749 | ||
2750 | /* Same as remote_resume, but with async support. */ | |
2751 | static void | |
2752 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2753 | { | |
2754 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2755 | |
2acceee2 JM |
2756 | /* We are about to start executing the inferior, let's register it |
2757 | with the event loop. NOTE: this is the one place where all the | |
2758 | execution commands end up. We could alternatively do this in each | |
2759 | of the execution commands in infcmd.c.*/ | |
2760 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2761 | into infcmd.c in order to allow inferior function calls to work | |
2762 | NOT asynchronously. */ | |
ed9a39eb | 2763 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2764 | target_async (inferior_event_handler, 0); |
2765 | /* Tell the world that the target is now executing. */ | |
2766 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2767 | this? Instead, should the client of target just assume (for | |
2768 | async targets) that the target is going to start executing? Is | |
2769 | this information already found in the continuation block? */ | |
ed9a39eb | 2770 | if (target_is_async_p ()) |
2acceee2 | 2771 | target_executing = 1; |
43ff13b4 | 2772 | } |
c906108c | 2773 | \f |
43ff13b4 JM |
2774 | |
2775 | /* Set up the signal handler for SIGINT, while the target is | |
2776 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2777 | static void | |
fba45db2 | 2778 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2779 | { |
c5aa993b | 2780 | sigint_remote_token = |
43ff13b4 JM |
2781 | create_async_signal_handler (async_remote_interrupt, NULL); |
2782 | signal (SIGINT, handle_remote_sigint); | |
2783 | } | |
2784 | ||
2785 | /* Signal handler for SIGINT, while the target is executing. */ | |
2786 | static void | |
fba45db2 | 2787 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2788 | { |
2789 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2790 | sigint_remote_twice_token = |
43ff13b4 JM |
2791 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2792 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2793 | } | |
2794 | ||
2795 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2796 | sent once. It will take effect the second time that the user sends | |
2797 | a ^C. */ | |
2798 | static void | |
fba45db2 | 2799 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2800 | { |
2801 | signal (sig, handle_sigint); | |
c5aa993b | 2802 | sigint_remote_twice_token = |
2df3850c | 2803 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2804 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2805 | } | |
2806 | ||
6426a772 | 2807 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2808 | to a ^C. */ |
c5aa993b | 2809 | static void |
fba45db2 | 2810 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2811 | { |
2812 | if (remote_debug) | |
2813 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2814 | ||
2815 | target_stop (); | |
2816 | } | |
2817 | ||
2818 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2819 | up on the target alltogether. */ | |
2df3850c | 2820 | void |
fba45db2 | 2821 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2822 | { |
2df3850c JM |
2823 | if (remote_debug) |
2824 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2825 | /* Do something only if the target was not killed by the previous |
2826 | cntl-C. */ | |
2827 | if (target_executing) | |
2828 | { | |
2829 | interrupt_query (); | |
2830 | signal (SIGINT, handle_remote_sigint); | |
2831 | } | |
43ff13b4 JM |
2832 | } |
2833 | ||
2834 | /* Reinstall the usual SIGINT handlers, after the target has | |
2835 | stopped. */ | |
6426a772 JM |
2836 | static void |
2837 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2838 | { |
2839 | signal (SIGINT, handle_sigint); | |
2840 | if (sigint_remote_twice_token) | |
c2c6d25f | 2841 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2842 | if (sigint_remote_token) |
c2c6d25f | 2843 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2844 | } |
2845 | ||
c906108c SS |
2846 | /* Send ^C to target to halt it. Target will respond, and send us a |
2847 | packet. */ | |
507f3c78 | 2848 | static void (*ofunc) (int); |
c906108c | 2849 | |
7a292a7a SS |
2850 | /* The command line interface's stop routine. This function is installed |
2851 | as a signal handler for SIGINT. The first time a user requests a | |
2852 | stop, we call remote_stop to send a break or ^C. If there is no | |
2853 | response from the target (it didn't stop when the user requested it), | |
2854 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2855 | static void |
fba45db2 | 2856 | remote_interrupt (int signo) |
c906108c | 2857 | { |
7a292a7a SS |
2858 | /* If this doesn't work, try more severe steps. */ |
2859 | signal (signo, remote_interrupt_twice); | |
2860 | ||
2861 | if (remote_debug) | |
0f71a2f6 | 2862 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2863 | |
2864 | target_stop (); | |
2865 | } | |
2866 | ||
2867 | /* The user typed ^C twice. */ | |
2868 | ||
2869 | static void | |
fba45db2 | 2870 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2871 | { |
2872 | signal (signo, ofunc); | |
2873 | interrupt_query (); | |
c906108c SS |
2874 | signal (signo, remote_interrupt); |
2875 | } | |
7a292a7a SS |
2876 | |
2877 | /* This is the generic stop called via the target vector. When a target | |
2878 | interrupt is requested, either by the command line or the GUI, we | |
2879 | will eventually end up here. */ | |
c906108c | 2880 | static void |
fba45db2 | 2881 | remote_stop (void) |
c906108c | 2882 | { |
7a292a7a SS |
2883 | /* Send a break or a ^C, depending on user preference. */ |
2884 | if (remote_debug) | |
0f71a2f6 | 2885 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2886 | |
7a292a7a | 2887 | if (remote_break) |
2cd58942 | 2888 | serial_send_break (remote_desc); |
c906108c | 2889 | else |
2cd58942 | 2890 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2891 | } |
2892 | ||
2893 | /* Ask the user what to do when an interrupt is received. */ | |
2894 | ||
2895 | static void | |
fba45db2 | 2896 | interrupt_query (void) |
c906108c SS |
2897 | { |
2898 | target_terminal_ours (); | |
2899 | ||
2900 | if (query ("Interrupted while waiting for the program.\n\ | |
2901 | Give up (and stop debugging it)? ")) | |
2902 | { | |
2903 | target_mourn_inferior (); | |
b5a2688f | 2904 | throw_exception (RETURN_QUIT); |
c906108c SS |
2905 | } |
2906 | ||
2907 | target_terminal_inferior (); | |
2908 | } | |
2909 | ||
6426a772 JM |
2910 | /* Enable/disable target terminal ownership. Most targets can use |
2911 | terminal groups to control terminal ownership. Remote targets are | |
2912 | different in that explicit transfer of ownership to/from GDB/target | |
2913 | is required. */ | |
2914 | ||
2915 | static void | |
2916 | remote_async_terminal_inferior (void) | |
2917 | { | |
2918 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2919 | sync_execution here. This function should only be called when | |
2920 | GDB is resuming the inferior in the forground. A background | |
2921 | resume (``run&'') should leave GDB in control of the terminal and | |
2922 | consequently should not call this code. */ | |
2923 | if (!sync_execution) | |
2924 | return; | |
2925 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2926 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2927 | to an asynchronous target with a synchronous command calls this | |
2928 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2929 | stops trying to transfer the terminal to the target when it | |
2930 | shouldn't this guard can go away. */ | |
2931 | if (!remote_async_terminal_ours_p) | |
2932 | return; | |
2933 | delete_file_handler (input_fd); | |
2934 | remote_async_terminal_ours_p = 0; | |
2935 | initialize_sigint_signal_handler (); | |
2936 | /* NOTE: At this point we could also register our selves as the | |
2937 | recipient of all input. Any characters typed could then be | |
2938 | passed on down to the target. */ | |
2939 | } | |
2940 | ||
2941 | static void | |
2942 | remote_async_terminal_ours (void) | |
2943 | { | |
2944 | /* See FIXME in remote_async_terminal_inferior. */ | |
2945 | if (!sync_execution) | |
2946 | return; | |
2947 | /* See FIXME in remote_async_terminal_inferior. */ | |
2948 | if (remote_async_terminal_ours_p) | |
2949 | return; | |
2950 | cleanup_sigint_signal_handler (NULL); | |
2951 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2952 | remote_async_terminal_ours_p = 1; | |
2953 | } | |
2954 | ||
c906108c SS |
2955 | /* If nonzero, ignore the next kill. */ |
2956 | ||
2957 | int kill_kludge; | |
2958 | ||
2959 | void | |
917317f4 | 2960 | remote_console_output (char *msg) |
c906108c SS |
2961 | { |
2962 | char *p; | |
2963 | ||
c5aa993b | 2964 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2965 | { |
2966 | char tb[2]; | |
2967 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2968 | tb[0] = c; | |
2969 | tb[1] = 0; | |
43ff13b4 | 2970 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2971 | } |
917317f4 | 2972 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2973 | } |
2974 | ||
0f71a2f6 JM |
2975 | /* Wait until the remote machine stops, then return, |
2976 | storing status in STATUS just as `wait' would. | |
2977 | Returns "pid", which in the case of a multi-threaded | |
2978 | remote OS, is the thread-id. */ | |
c906108c | 2979 | |
39f77062 KB |
2980 | static ptid_t |
2981 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2982 | { |
d01949b6 AC |
2983 | struct remote_state *rs = get_remote_state (); |
2984 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 2985 | ULONGEST thread_num = -1; |
3c3bea1c | 2986 | ULONGEST addr; |
c906108c SS |
2987 | |
2988 | status->kind = TARGET_WAITKIND_EXITED; | |
2989 | status->value.integer = 0; | |
2990 | ||
2991 | while (1) | |
2992 | { | |
2993 | unsigned char *p; | |
2994 | ||
c906108c | 2995 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2996 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2997 | signal (SIGINT, ofunc); |
2998 | ||
2999 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3000 | collection of trace data) every time the target stops. */ |
c906108c SS |
3001 | if (target_wait_loop_hook) |
3002 | (*target_wait_loop_hook) (); | |
3003 | ||
3c3bea1c GS |
3004 | remote_stopped_by_watchpoint_p = 0; |
3005 | ||
c906108c SS |
3006 | switch (buf[0]) |
3007 | { | |
3008 | case 'E': /* Error of some sort */ | |
3009 | warning ("Remote failure reply: %s", buf); | |
3010 | continue; | |
449092f6 CV |
3011 | case 'F': /* File-I/O request */ |
3012 | remote_fileio_request (buf); | |
3013 | continue; | |
c906108c SS |
3014 | case 'T': /* Status with PC, SP, FP, ... */ |
3015 | { | |
3016 | int i; | |
d9d9c31f | 3017 | char regs[MAX_REGISTER_SIZE]; |
c906108c SS |
3018 | |
3019 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3020 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3021 | ss = signal number |
3022 | n... = register number | |
3023 | r... = register contents | |
3024 | */ | |
c906108c SS |
3025 | p = &buf[3]; /* after Txx */ |
3026 | ||
3027 | while (*p) | |
3028 | { | |
3029 | unsigned char *p1; | |
3030 | char *p_temp; | |
97345198 | 3031 | int fieldsize; |
3c3bea1c GS |
3032 | LONGEST pnum = 0; |
3033 | ||
3034 | /* If the packet contains a register number save it in pnum | |
3035 | and set p1 to point to the character following it. | |
3036 | Otherwise p1 points to p. */ | |
c906108c | 3037 | |
3c3bea1c GS |
3038 | /* If this packet is an awatch packet, don't parse the 'a' |
3039 | as a register number. */ | |
3040 | ||
3041 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3042 | { | |
3043 | /* Read the ``P'' register number. */ | |
3044 | pnum = strtol (p, &p_temp, 16); | |
3045 | p1 = (unsigned char *) p_temp; | |
3046 | } | |
3047 | else | |
3048 | p1 = p; | |
c906108c | 3049 | |
c5aa993b | 3050 | if (p1 == p) /* No register number present here */ |
c906108c | 3051 | { |
3c3bea1c | 3052 | p1 = (unsigned char *) strchr (p, ':'); |
c906108c SS |
3053 | if (p1 == NULL) |
3054 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3055 | Packet: '%s'\n", | |
3056 | p, buf); | |
3c3bea1c | 3057 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3058 | { |
3059 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3060 | record_currthread (thread_num); | |
3061 | p = (unsigned char *) p_temp; | |
3062 | } | |
3c3bea1c GS |
3063 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3064 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3065 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3066 | { | |
3067 | remote_stopped_by_watchpoint_p = 1; | |
3068 | p = unpack_varlen_hex (++p1, &addr); | |
3069 | remote_watch_data_address = (CORE_ADDR)addr; | |
3070 | } | |
3071 | else | |
3072 | { | |
3073 | /* Silently skip unknown optional info. */ | |
3074 | p_temp = strchr (p1 + 1, ';'); | |
3075 | if (p_temp) | |
3076 | p = (unsigned char *) p_temp; | |
3077 | } | |
c906108c SS |
3078 | } |
3079 | else | |
3080 | { | |
ad10f812 | 3081 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
3082 | p = p1; |
3083 | ||
3084 | if (*p++ != ':') | |
3fcb8548 AC |
3085 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
3086 | p, buf); | |
c906108c | 3087 | |
ad10f812 | 3088 | if (reg == NULL) |
3fcb8548 AC |
3089 | error ("Remote sent bad register number %s: %s\nPacket: '%s'\n", |
3090 | phex_nz (pnum, 0), p, buf); | |
c906108c | 3091 | |
12c266ea | 3092 | fieldsize = hex2bin (p, regs, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)); |
97345198 | 3093 | p += 2 * fieldsize; |
12c266ea | 3094 | if (fieldsize < DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3095 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3096 | supply_register (reg->regnum, regs); |
c906108c SS |
3097 | } |
3098 | ||
3099 | if (*p++ != ';') | |
3fcb8548 | 3100 | error ("Remote register badly formatted: %s\nhere: %s", buf, p); |
c906108c SS |
3101 | } |
3102 | } | |
3103 | /* fall through */ | |
3104 | case 'S': /* Old style status, just signal only */ | |
3105 | status->kind = TARGET_WAITKIND_STOPPED; | |
3106 | status->value.sig = (enum target_signal) | |
3107 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3108 | ||
0f71a2f6 JM |
3109 | if (buf[3] == 'p') |
3110 | { | |
3111 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3112 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3113 | |
3114 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3115 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3116 | value_from_string ("PDEBUG-")); |
3117 | cisco_kernel_mode = 0; | |
3118 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3119 | record_currthread (thread_num); | |
3120 | } | |
3121 | else if (buf[3] == 'k') | |
3122 | { | |
3123 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3124 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3125 | |
3126 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3127 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3128 | value_from_string ("KDEBUG-")); |
3129 | cisco_kernel_mode = 1; | |
3130 | } | |
c906108c | 3131 | goto got_status; |
0f71a2f6 JM |
3132 | case 'N': /* Cisco special: status and offsets */ |
3133 | { | |
3134 | bfd_vma text_addr, data_addr, bss_addr; | |
3135 | bfd_signed_vma text_off, data_off, bss_off; | |
3136 | unsigned char *p1; | |
3137 | ||
3138 | status->kind = TARGET_WAITKIND_STOPPED; | |
3139 | status->value.sig = (enum target_signal) | |
3140 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3141 | ||
c5aa993b | 3142 | if (symfile_objfile == NULL) |
0f71a2f6 | 3143 | { |
d4f3574e | 3144 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
3145 | Packet Dropped"); |
3146 | goto got_status; | |
3147 | } | |
3148 | ||
3149 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3150 | * where AA is the signal number, TT is the new text | |
3151 | * address, DD * is the new data address, and BB is the | |
3152 | * new bss address. */ | |
3153 | ||
3154 | p = &buf[3]; | |
3155 | text_addr = strtoul (p, (char **) &p1, 16); | |
3156 | if (p1 == p || *p1 != ';') | |
3157 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3158 | p = p1 + 1; | |
3159 | data_addr = strtoul (p, (char **) &p1, 16); | |
3160 | if (p1 == p || *p1 != ';') | |
3161 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3162 | p = p1 + 1; | |
3163 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3164 | if (p1 == p) |
0f71a2f6 JM |
3165 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3166 | ||
3167 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3168 | &text_off, &data_off, &bss_off) | |
3169 | == 0) | |
c5aa993b | 3170 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
3171 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3172 | ||
3173 | goto got_status; | |
3174 | } | |
c906108c SS |
3175 | case 'W': /* Target exited */ |
3176 | { | |
3177 | /* The remote process exited. */ | |
3178 | status->kind = TARGET_WAITKIND_EXITED; | |
3179 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3180 | goto got_status; | |
3181 | } | |
3182 | case 'X': | |
3183 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3184 | status->value.sig = (enum target_signal) | |
3185 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3186 | kill_kludge = 1; | |
3187 | ||
3188 | goto got_status; | |
3189 | case 'O': /* Console output */ | |
3190 | remote_console_output (buf + 1); | |
3191 | continue; | |
3192 | case '\0': | |
3193 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3194 | { | |
3195 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3196 | the remote system doesn't support it. */ |
c906108c SS |
3197 | target_terminal_ours_for_output (); |
3198 | printf_filtered | |
3199 | ("Can't send signals to this remote system. %s not sent.\n", | |
3200 | target_signal_to_name (last_sent_signal)); | |
3201 | last_sent_signal = TARGET_SIGNAL_0; | |
3202 | target_terminal_inferior (); | |
3203 | ||
3204 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3205 | putpkt ((char *) buf); | |
3206 | continue; | |
3207 | } | |
3208 | /* else fallthrough */ | |
3209 | default: | |
3210 | warning ("Invalid remote reply: %s", buf); | |
3211 | continue; | |
3212 | } | |
3213 | } | |
c5aa993b | 3214 | got_status: |
c906108c SS |
3215 | if (thread_num != -1) |
3216 | { | |
39f77062 | 3217 | return pid_to_ptid (thread_num); |
c906108c | 3218 | } |
39f77062 | 3219 | return inferior_ptid; |
c906108c SS |
3220 | } |
3221 | ||
43ff13b4 | 3222 | /* Async version of remote_wait. */ |
39f77062 KB |
3223 | static ptid_t |
3224 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3225 | { |
d01949b6 AC |
3226 | struct remote_state *rs = get_remote_state (); |
3227 | unsigned char *buf = alloca (rs->remote_packet_size); | |
b2dd6311 | 3228 | ULONGEST thread_num = -1; |
3c3bea1c | 3229 | ULONGEST addr; |
43ff13b4 JM |
3230 | |
3231 | status->kind = TARGET_WAITKIND_EXITED; | |
3232 | status->value.integer = 0; | |
3233 | ||
3c3bea1c GS |
3234 | remote_stopped_by_watchpoint_p = 0; |
3235 | ||
43ff13b4 JM |
3236 | while (1) |
3237 | { | |
3238 | unsigned char *p; | |
c5aa993b | 3239 | |
ed9a39eb | 3240 | if (!target_is_async_p ()) |
43ff13b4 | 3241 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3242 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3243 | _never_ wait for ever -> test on target_is_async_p(). | |
3244 | However, before we do that we need to ensure that the caller | |
3245 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 3246 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3247 | if (!target_is_async_p ()) |
43ff13b4 JM |
3248 | signal (SIGINT, ofunc); |
3249 | ||
3250 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3251 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
3252 | if (target_wait_loop_hook) |
3253 | (*target_wait_loop_hook) (); | |
3254 | ||
3255 | switch (buf[0]) | |
3256 | { | |
3257 | case 'E': /* Error of some sort */ | |
3258 | warning ("Remote failure reply: %s", buf); | |
3259 | continue; | |
449092f6 CV |
3260 | case 'F': /* File-I/O request */ |
3261 | remote_fileio_request (buf); | |
3262 | continue; | |
43ff13b4 JM |
3263 | case 'T': /* Status with PC, SP, FP, ... */ |
3264 | { | |
3265 | int i; | |
d9d9c31f | 3266 | char regs[MAX_REGISTER_SIZE]; |
43ff13b4 JM |
3267 | |
3268 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3269 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3270 | ss = signal number |
3271 | n... = register number | |
3272 | r... = register contents | |
3273 | */ | |
43ff13b4 JM |
3274 | p = &buf[3]; /* after Txx */ |
3275 | ||
3276 | while (*p) | |
3277 | { | |
3278 | unsigned char *p1; | |
3279 | char *p_temp; | |
6c3f2dbf | 3280 | int fieldsize; |
3c3bea1c | 3281 | long pnum = 0; |
43ff13b4 | 3282 | |
3c3bea1c GS |
3283 | /* If the packet contains a register number, save it in pnum |
3284 | and set p1 to point to the character following it. | |
3285 | Otherwise p1 points to p. */ | |
3286 | ||
3287 | /* If this packet is an awatch packet, don't parse the 'a' | |
3288 | as a register number. */ | |
3289 | ||
3290 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) | |
3291 | { | |
3292 | /* Read the register number. */ | |
3293 | pnum = strtol (p, &p_temp, 16); | |
3294 | p1 = (unsigned char *) p_temp; | |
3295 | } | |
3296 | else | |
3297 | p1 = p; | |
43ff13b4 | 3298 | |
c5aa993b | 3299 | if (p1 == p) /* No register number present here */ |
43ff13b4 | 3300 | { |
3c3bea1c | 3301 | p1 = (unsigned char *) strchr (p, ':'); |
43ff13b4 | 3302 | if (p1 == NULL) |
3fcb8548 AC |
3303 | error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n", |
3304 | p, buf); | |
3c3bea1c | 3305 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3306 | { |
3307 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3308 | record_currthread (thread_num); | |
3309 | p = (unsigned char *) p_temp; | |
3310 | } | |
3c3bea1c GS |
3311 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3312 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3313 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3314 | { | |
3315 | remote_stopped_by_watchpoint_p = 1; | |
3316 | p = unpack_varlen_hex (++p1, &addr); | |
3317 | remote_watch_data_address = (CORE_ADDR)addr; | |
3318 | } | |
3319 | else | |
3320 | { | |
3321 | /* Silently skip unknown optional info. */ | |
3322 | p_temp = (unsigned char *) strchr (p1 + 1, ';'); | |
3323 | if (p_temp) | |
3324 | p = p_temp; | |
3325 | } | |
43ff13b4 | 3326 | } |
3c3bea1c | 3327 | |
43ff13b4 JM |
3328 | else |
3329 | { | |
ad10f812 | 3330 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 3331 | p = p1; |
43ff13b4 | 3332 | if (*p++ != ':') |
3fcb8548 AC |
3333 | error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n", |
3334 | p, buf); | |
43ff13b4 | 3335 | |
ad10f812 | 3336 | if (reg == NULL) |
3fcb8548 AC |
3337 | error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n", |
3338 | pnum, p, buf); | |
43ff13b4 | 3339 | |
12c266ea | 3340 | fieldsize = hex2bin (p, regs, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)); |
6c3f2dbf | 3341 | p += 2 * fieldsize; |
12c266ea | 3342 | if (fieldsize < DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)) |
30559e10 | 3343 | warning ("Remote reply is too short: %s", buf); |
ad10f812 | 3344 | supply_register (reg->regnum, regs); |
43ff13b4 JM |
3345 | } |
3346 | ||
3347 | if (*p++ != ';') | |
0a2cfde4 AC |
3348 | error ("Remote register badly formatted: %s\nhere: %s", |
3349 | buf, p); | |
43ff13b4 JM |
3350 | } |
3351 | } | |
3352 | /* fall through */ | |
3353 | case 'S': /* Old style status, just signal only */ | |
3354 | status->kind = TARGET_WAITKIND_STOPPED; | |
3355 | status->value.sig = (enum target_signal) | |
3356 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3357 | ||
3358 | if (buf[3] == 'p') | |
3359 | { | |
3360 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3361 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3362 | |
3363 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3364 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3365 | value_from_string ("PDEBUG-")); |
3366 | cisco_kernel_mode = 0; | |
3367 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3368 | record_currthread (thread_num); | |
3369 | } | |
3370 | else if (buf[3] == 'k') | |
3371 | { | |
3372 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3373 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3374 | |
3375 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3376 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3377 | value_from_string ("KDEBUG-")); |
3378 | cisco_kernel_mode = 1; | |
3379 | } | |
3380 | goto got_status; | |
3381 | case 'N': /* Cisco special: status and offsets */ | |
3382 | { | |
3383 | bfd_vma text_addr, data_addr, bss_addr; | |
3384 | bfd_signed_vma text_off, data_off, bss_off; | |
3385 | unsigned char *p1; | |
3386 | ||
3387 | status->kind = TARGET_WAITKIND_STOPPED; | |
3388 | status->value.sig = (enum target_signal) | |
3389 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3390 | ||
c5aa993b | 3391 | if (symfile_objfile == NULL) |
43ff13b4 JM |
3392 | { |
3393 | warning ("Relocation packet recieved with no symbol file. \ | |
3394 | Packet Dropped"); | |
3395 | goto got_status; | |
3396 | } | |
3397 | ||
3398 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3399 | * where AA is the signal number, TT is the new text | |
3400 | * address, DD * is the new data address, and BB is the | |
3401 | * new bss address. */ | |
3402 | ||
3403 | p = &buf[3]; | |
3404 | text_addr = strtoul (p, (char **) &p1, 16); | |
3405 | if (p1 == p || *p1 != ';') | |
3406 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3407 | p = p1 + 1; | |
3408 | data_addr = strtoul (p, (char **) &p1, 16); | |
3409 | if (p1 == p || *p1 != ';') | |
3410 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3411 | p = p1 + 1; | |
3412 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3413 | if (p1 == p) |
43ff13b4 JM |
3414 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3415 | ||
3416 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3417 | &text_off, &data_off, &bss_off) | |
3418 | == 0) | |
c5aa993b | 3419 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
3420 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3421 | ||
3422 | goto got_status; | |
3423 | } | |
3424 | case 'W': /* Target exited */ | |
3425 | { | |
3426 | /* The remote process exited. */ | |
3427 | status->kind = TARGET_WAITKIND_EXITED; | |
3428 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3429 | goto got_status; | |
3430 | } | |
3431 | case 'X': | |
3432 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3433 | status->value.sig = (enum target_signal) | |
3434 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3435 | kill_kludge = 1; | |
3436 | ||
3437 | goto got_status; | |
3438 | case 'O': /* Console output */ | |
3439 | remote_console_output (buf + 1); | |
c4093a6a JM |
3440 | /* Return immediately to the event loop. The event loop will |
3441 | still be waiting on the inferior afterwards. */ | |
3442 | status->kind = TARGET_WAITKIND_IGNORE; | |
3443 | goto got_status; | |
43ff13b4 JM |
3444 | case '\0': |
3445 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3446 | { | |
3447 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3448 | the remote system doesn't support it. */ |
43ff13b4 JM |
3449 | target_terminal_ours_for_output (); |
3450 | printf_filtered | |
3451 | ("Can't send signals to this remote system. %s not sent.\n", | |
3452 | target_signal_to_name (last_sent_signal)); | |
3453 | last_sent_signal = TARGET_SIGNAL_0; | |
3454 | target_terminal_inferior (); | |
3455 | ||
3456 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3457 | putpkt ((char *) buf); | |
3458 | continue; | |
3459 | } | |
3460 | /* else fallthrough */ | |
3461 | default: | |
3462 | warning ("Invalid remote reply: %s", buf); | |
3463 | continue; | |
3464 | } | |
3465 | } | |
c5aa993b | 3466 | got_status: |
43ff13b4 JM |
3467 | if (thread_num != -1) |
3468 | { | |
39f77062 | 3469 | return pid_to_ptid (thread_num); |
43ff13b4 | 3470 | } |
39f77062 | 3471 | return inferior_ptid; |
43ff13b4 JM |
3472 | } |
3473 | ||
c906108c SS |
3474 | /* Number of bytes of registers this stub implements. */ |
3475 | ||
3476 | static int register_bytes_found; | |
3477 | ||
3478 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3479 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3480 | |
c906108c | 3481 | static void |
ad10f812 | 3482 | remote_fetch_registers (int regnum) |
c906108c | 3483 | { |
d01949b6 AC |
3484 | struct remote_state *rs = get_remote_state (); |
3485 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3486 | int i; |
3487 | char *p; | |
ad10f812 | 3488 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3489 | |
39f77062 | 3490 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3491 | |
b323314b AC |
3492 | if (regnum >= 0) |
3493 | { | |
3494 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3495 | gdb_assert (reg != NULL); | |
3496 | if (!reg->in_g_packet) | |
3497 | internal_error (__FILE__, __LINE__, | |
3498 | "Attempt to fetch a non G-packet register when this " | |
3499 | "remote.c does not support the p-packet."); | |
3500 | } | |
3501 | ||
c906108c | 3502 | sprintf (buf, "g"); |
d01949b6 | 3503 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3504 | |
11cf8741 JM |
3505 | /* Save the size of the packet sent to us by the target. Its used |
3506 | as a heuristic when determining the max size of packets that the | |
3507 | target can safely receive. */ | |
d01949b6 AC |
3508 | if ((rs->actual_register_packet_size) == 0) |
3509 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3510 | |
3511 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3512 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3513 | |
3514 | /* We can get out of synch in various cases. If the first character | |
3515 | in the buffer is not a hex character, assume that has happened | |
3516 | and try to fetch another packet to read. */ | |
3517 | while ((buf[0] < '0' || buf[0] > '9') | |
3518 | && (buf[0] < 'a' || buf[0] > 'f') | |
3519 | && buf[0] != 'x') /* New: unavailable register value */ | |
3520 | { | |
3521 | if (remote_debug) | |
0f71a2f6 JM |
3522 | fprintf_unfiltered (gdb_stdlog, |
3523 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3524 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3525 | } |
3526 | ||
3527 | /* Reply describes registers byte by byte, each byte encoded as two | |
3528 | hex characters. Suck them all up, then supply them to the | |
3529 | register cacheing/storage mechanism. */ | |
3530 | ||
3531 | p = buf; | |
ad10f812 | 3532 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3533 | { |
3534 | if (p[0] == 0) | |
3535 | break; | |
3536 | if (p[1] == 0) | |
3537 | { | |
3538 | warning ("Remote reply is of odd length: %s", buf); | |
3539 | /* Don't change register_bytes_found in this case, and don't | |
3540 | print a second warning. */ | |
3541 | goto supply_them; | |
3542 | } | |
3543 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3544 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3545 | else |
3546 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3547 | p += 2; | |
3548 | } | |
3549 | ||
3550 | if (i != register_bytes_found) | |
3551 | { | |
3552 | register_bytes_found = i; | |
2649061d AC |
3553 | if (REGISTER_BYTES_OK_P () |
3554 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3555 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3556 | } |
c5aa993b | 3557 | |
b323314b | 3558 | supply_them: |
ad10f812 | 3559 | { |
b323314b AC |
3560 | int i; |
3561 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3562 | { |
b323314b AC |
3563 | struct packet_reg *r = &rs->regs[i]; |
3564 | if (r->in_g_packet) | |
3565 | { | |
8ccc1287 AC |
3566 | if (r->offset * 2 >= strlen (buf)) |
3567 | /* A short packet that didn't include the register's | |
3568 | value, this implies that the register is zero (and | |
3569 | not that the register is unavailable). Supply that | |
3570 | zero value. */ | |
3571 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3572 | else if (buf[r->offset * 2] == 'x') | |
3573 | { | |
3574 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3575 | /* The register isn't available, mark it as such (at | |
3576 | the same time setting the value to zero). */ | |
3577 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3578 | set_register_cached (i, -1); | |
3579 | } | |
3580 | else | |
3581 | regcache_raw_supply (current_regcache, r->regnum, | |
3582 | regs + r->offset); | |
b323314b | 3583 | } |
ad10f812 AC |
3584 | } |
3585 | } | |
c906108c SS |
3586 | } |
3587 | ||
3588 | /* Prepare to store registers. Since we may send them all (using a | |
3589 | 'G' request), we have to read out the ones we don't want to change | |
3590 | first. */ | |
3591 | ||
c5aa993b | 3592 | static void |
fba45db2 | 3593 | remote_prepare_to_store (void) |
c906108c | 3594 | { |
cf0e1e0d DJ |
3595 | struct remote_state *rs = get_remote_state (); |
3596 | int i; | |
3597 | char buf[MAX_REGISTER_SIZE]; | |
3598 | ||
c906108c | 3599 | /* Make sure the entire registers array is valid. */ |
5a2468f5 JM |
3600 | switch (remote_protocol_P.support) |
3601 | { | |
3602 | case PACKET_DISABLE: | |
3603 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3604 | /* Make sure all the necessary registers are cached. */ |
3605 | for (i = 0; i < NUM_REGS; i++) | |
3606 | if (rs->regs[i].in_g_packet) | |
3607 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3608 | break; |
3609 | case PACKET_ENABLE: | |
3610 | break; | |
3611 | } | |
3612 | } | |
3613 | ||
ad10f812 | 3614 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
5a2468f5 JM |
3615 | packet was not recognized. */ |
3616 | ||
3617 | static int | |
ad10f812 | 3618 | store_register_using_P (int regnum) |
5a2468f5 | 3619 | { |
d01949b6 | 3620 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3621 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3622 | /* Try storing a single register. */ |
d01949b6 | 3623 | char *buf = alloca (rs->remote_packet_size); |
d9d9c31f | 3624 | char regp[MAX_REGISTER_SIZE]; |
5a2468f5 JM |
3625 | char *p; |
3626 | int i; | |
3627 | ||
ad10f812 | 3628 | sprintf (buf, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3629 | p = buf + strlen (buf); |
ad10f812 | 3630 | regcache_collect (reg->regnum, regp); |
12c266ea | 3631 | bin2hex (regp, p, DEPRECATED_REGISTER_RAW_SIZE (reg->regnum)); |
ad10f812 | 3632 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3633 | |
3634 | return buf[0] != '\0'; | |
c906108c SS |
3635 | } |
3636 | ||
5a2468f5 | 3637 | |
ad10f812 | 3638 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents |
7302a204 | 3639 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3640 | |
3641 | static void | |
ad10f812 | 3642 | remote_store_registers (int regnum) |
c906108c | 3643 | { |
d01949b6 | 3644 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3645 | char *buf; |
3646 | char *regs; | |
c906108c SS |
3647 | int i; |
3648 | char *p; | |
3649 | ||
39f77062 | 3650 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3651 | |
ad10f812 | 3652 | if (regnum >= 0) |
c906108c | 3653 | { |
5a2468f5 | 3654 | switch (remote_protocol_P.support) |
c906108c | 3655 | { |
5a2468f5 JM |
3656 | case PACKET_DISABLE: |
3657 | break; | |
3658 | case PACKET_ENABLE: | |
ad10f812 | 3659 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3660 | return; |
3661 | else | |
3662 | error ("Protocol error: P packet not recognized by stub"); | |
3663 | case PACKET_SUPPORT_UNKNOWN: | |
ad10f812 | 3664 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3665 | { |
3666 | /* The stub recognized the 'P' packet. Remember this. */ | |
3667 | remote_protocol_P.support = PACKET_ENABLE; | |
3668 | return; | |
3669 | } | |
3670 | else | |
3671 | { | |
3672 | /* The stub does not support the 'P' packet. Use 'G' | |
3673 | instead, and don't try using 'P' in the future (it | |
3674 | will just waste our time). */ | |
3675 | remote_protocol_P.support = PACKET_DISABLE; | |
3676 | break; | |
3677 | } | |
c906108c | 3678 | } |
c906108c SS |
3679 | } |
3680 | ||
193cb69f AC |
3681 | /* Extract all the registers in the regcache copying them into a |
3682 | local buffer. */ | |
3683 | { | |
b323314b | 3684 | int i; |
ad10f812 AC |
3685 | regs = alloca (rs->sizeof_g_packet); |
3686 | memset (regs, rs->sizeof_g_packet, 0); | |
b323314b | 3687 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3688 | { |
b323314b AC |
3689 | struct packet_reg *r = &rs->regs[i]; |
3690 | if (r->in_g_packet) | |
3691 | regcache_collect (r->regnum, regs + r->offset); | |
193cb69f AC |
3692 | } |
3693 | } | |
c906108c SS |
3694 | |
3695 | /* Command describes registers byte by byte, | |
3696 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3697 | buf = alloca (rs->remote_packet_size); |
3698 | p = buf; | |
3699 | *p++ = 'G'; | |
c906108c | 3700 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3701 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3702 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3703 | } |
c906108c SS |
3704 | \f |
3705 | ||
3706 | /* Return the number of hex digits in num. */ | |
3707 | ||
3708 | static int | |
fba45db2 | 3709 | hexnumlen (ULONGEST num) |
c906108c SS |
3710 | { |
3711 | int i; | |
3712 | ||
3713 | for (i = 0; num != 0; i++) | |
3714 | num >>= 4; | |
3715 | ||
3716 | return max (i, 1); | |
3717 | } | |
3718 | ||
2df3850c | 3719 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3720 | |
3721 | static int | |
fba45db2 | 3722 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3723 | { |
c906108c | 3724 | int len = hexnumlen (num); |
2df3850c JM |
3725 | return hexnumnstr (buf, num, len); |
3726 | } | |
3727 | ||
c906108c | 3728 | |
2df3850c | 3729 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3730 | |
2df3850c | 3731 | static int |
fba45db2 | 3732 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3733 | { |
3734 | int i; | |
3735 | ||
3736 | buf[width] = '\0'; | |
3737 | ||
3738 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3739 | { |
c5aa993b | 3740 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3741 | num >>= 4; |
3742 | } | |
3743 | ||
2df3850c | 3744 | return width; |
c906108c SS |
3745 | } |
3746 | ||
3747 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3748 | ||
3749 | static CORE_ADDR | |
fba45db2 | 3750 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3751 | { |
3752 | if (remote_address_size > 0 | |
3753 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3754 | { | |
3755 | /* Only create a mask when that mask can safely be constructed | |
3756 | in a ULONGEST variable. */ | |
3757 | ULONGEST mask = 1; | |
3758 | mask = (mask << remote_address_size) - 1; | |
3759 | addr &= mask; | |
3760 | } | |
3761 | return addr; | |
3762 | } | |
3763 | ||
3764 | /* Determine whether the remote target supports binary downloading. | |
3765 | This is accomplished by sending a no-op memory write of zero length | |
3766 | to the target at the specified address. It does not suffice to send | |
3767 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3768 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3769 | ||
96baa820 JM |
3770 | NOTE: This can still lose if the serial line is not eight-bit |
3771 | clean. In cases like this, the user should clear "remote | |
3772 | X-packet". */ | |
3773 | ||
c906108c | 3774 | static void |
fba45db2 | 3775 | check_binary_download (CORE_ADDR addr) |
c906108c | 3776 | { |
d01949b6 | 3777 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3778 | switch (remote_protocol_binary_download.support) |
c906108c | 3779 | { |
96baa820 JM |
3780 | case PACKET_DISABLE: |
3781 | break; | |
3782 | case PACKET_ENABLE: | |
3783 | break; | |
3784 | case PACKET_SUPPORT_UNKNOWN: | |
3785 | { | |
d01949b6 | 3786 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
3787 | char *p; |
3788 | ||
3789 | p = buf; | |
3790 | *p++ = 'X'; | |
3791 | p += hexnumstr (p, (ULONGEST) addr); | |
3792 | *p++ = ','; | |
3793 | p += hexnumstr (p, (ULONGEST) 0); | |
3794 | *p++ = ':'; | |
3795 | *p = '\0'; | |
3796 | ||
3797 | putpkt_binary (buf, (int) (p - buf)); | |
d01949b6 | 3798 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3799 | |
96baa820 JM |
3800 | if (buf[0] == '\0') |
3801 | { | |
3802 | if (remote_debug) | |
3803 | fprintf_unfiltered (gdb_stdlog, | |
3804 | "binary downloading NOT suppported by target\n"); | |
3805 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3806 | } | |
3807 | else | |
3808 | { | |
3809 | if (remote_debug) | |
3810 | fprintf_unfiltered (gdb_stdlog, | |
3811 | "binary downloading suppported by target\n"); | |
3812 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3813 | } | |
3814 | break; | |
3815 | } | |
c906108c SS |
3816 | } |
3817 | } | |
3818 | ||
3819 | /* Write memory data directly to the remote machine. | |
3820 | This does not inform the data cache; the data cache uses this. | |
3821 | MEMADDR is the address in the remote memory space. | |
3822 | MYADDR is the address of the buffer in our space. | |
3823 | LEN is the number of bytes. | |
3824 | ||
917317f4 JM |
3825 | Returns number of bytes transferred, or 0 (setting errno) for |
3826 | error. Only transfer a single packet. */ | |
c906108c | 3827 | |
449092f6 | 3828 | int |
917317f4 | 3829 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3830 | { |
917317f4 | 3831 | unsigned char *buf; |
917317f4 JM |
3832 | unsigned char *p; |
3833 | unsigned char *plen; | |
c2d11a7d | 3834 | long sizeof_buf; |
917317f4 JM |
3835 | int plenlen; |
3836 | int todo; | |
3837 | int nr_bytes; | |
a257b5bb AC |
3838 | int payload_size; |
3839 | unsigned char *payload_start; | |
c906108c | 3840 | |
a257b5bb | 3841 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3842 | check_binary_download (memaddr); |
3843 | ||
a257b5bb AC |
3844 | /* Compute the size, and then allocate space for the largest |
3845 | possible packet. Include space for an extra trailing NUL. */ | |
3846 | sizeof_buf = get_memory_write_packet_size () + 1; | |
c2d11a7d | 3847 | buf = alloca (sizeof_buf); |
c906108c | 3848 | |
a257b5bb AC |
3849 | /* Compute the size of the actual payload by subtracting out the |
3850 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ | |
3851 | payload_size = (get_memory_write_packet_size () - (strlen ("$M,:#NN") | |
3852 | + hexnumlen (memaddr) | |
3853 | + hexnumlen (len))); | |
c906108c | 3854 | |
a257b5bb | 3855 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3856 | |
a257b5bb | 3857 | /* Append "[XM]". Compute a best guess of the number of bytes |
917317f4 | 3858 | actually transfered. */ |
a257b5bb | 3859 | p = buf; |
917317f4 | 3860 | switch (remote_protocol_binary_download.support) |
c906108c | 3861 | { |
917317f4 JM |
3862 | case PACKET_ENABLE: |
3863 | *p++ = 'X'; | |
3864 | /* Best guess at number of bytes that will fit. */ | |
a257b5bb | 3865 | todo = min (len, payload_size); |
917317f4 JM |
3866 | break; |
3867 | case PACKET_DISABLE: | |
3868 | *p++ = 'M'; | |
3869 | /* num bytes that will fit */ | |
a257b5bb | 3870 | todo = min (len, payload_size / 2); |
917317f4 JM |
3871 | break; |
3872 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3873 | internal_error (__FILE__, __LINE__, |
3874 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3875 | default: |
8e65ff28 | 3876 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 JM |
3877 | } |
3878 | ||
a257b5bb | 3879 | /* Append "<memaddr>". */ |
917317f4 JM |
3880 | memaddr = remote_address_masked (memaddr); |
3881 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3882 | |
3883 | /* Append ",". */ | |
917317f4 JM |
3884 | *p++ = ','; |
3885 | ||
a257b5bb AC |
3886 | /* Append <len>. Retain the location/size of <len>. It may need to |
3887 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3888 | plen = p; |
3889 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3890 | p += plenlen; | |
a257b5bb AC |
3891 | |
3892 | /* Append ":". */ | |
917317f4 JM |
3893 | *p++ = ':'; |
3894 | *p = '\0'; | |
3895 | ||
a257b5bb AC |
3896 | /* Append the packet body. */ |
3897 | payload_start = p; | |
917317f4 JM |
3898 | switch (remote_protocol_binary_download.support) |
3899 | { | |
3900 | case PACKET_ENABLE: | |
3901 | /* Binary mode. Send target system values byte by byte, in | |
3902 | increasing byte addresses. Only escape certain critical | |
3903 | characters. */ | |
3904 | for (nr_bytes = 0; | |
a257b5bb | 3905 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3906 | nr_bytes++) |
c906108c | 3907 | { |
917317f4 JM |
3908 | switch (myaddr[nr_bytes] & 0xff) |
3909 | { | |
3910 | case '$': | |
3911 | case '#': | |
3912 | case 0x7d: | |
3913 | /* These must be escaped */ | |
3914 | *p++ = 0x7d; | |
3915 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3916 | break; | |
3917 | default: | |
3918 | *p++ = myaddr[nr_bytes] & 0xff; | |
3919 | break; | |
3920 | } | |
c906108c | 3921 | } |
917317f4 | 3922 | if (nr_bytes < todo) |
c906108c | 3923 | { |
917317f4 JM |
3924 | /* Escape chars have filled up the buffer prematurely, |
3925 | and we have actually sent fewer bytes than planned. | |
3926 | Fix-up the length field of the packet. Use the same | |
3927 | number of characters as before. */ | |
917317f4 JM |
3928 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3929 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3930 | } |
917317f4 JM |
3931 | break; |
3932 | case PACKET_DISABLE: | |
3933 | /* Normal mode: Send target system values byte by byte, in | |
3934 | increasing byte addresses. Each byte is encoded as a two hex | |
3935 | value. */ | |
2644f393 | 3936 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3937 | p += 2 * nr_bytes; |
917317f4 JM |
3938 | break; |
3939 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3940 | internal_error (__FILE__, __LINE__, |
3941 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3942 | default: |
8e65ff28 | 3943 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3944 | } |
917317f4 JM |
3945 | |
3946 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3947 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3948 | |
3949 | if (buf[0] == 'E') | |
3950 | { | |
3951 | /* There is no correspondance between what the remote protocol | |
3952 | uses for errors and errno codes. We would like a cleaner way | |
3953 | of representing errors (big enough to include errno codes, | |
3954 | bfd_error codes, and others). But for now just return EIO. */ | |
3955 | errno = EIO; | |
3956 | return 0; | |
3957 | } | |
3958 | ||
3959 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3960 | bytes than we'd planned. */ | |
3961 | return nr_bytes; | |
c906108c SS |
3962 | } |
3963 | ||
3964 | /* Read memory data directly from the remote machine. | |
3965 | This does not use the data cache; the data cache uses this. | |
3966 | MEMADDR is the address in the remote memory space. | |
3967 | MYADDR is the address of the buffer in our space. | |
3968 | LEN is the number of bytes. | |
3969 | ||
3970 | Returns number of bytes transferred, or 0 for error. */ | |
3971 | ||
917317f4 JM |
3972 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3973 | remote targets) shouldn't attempt to read the entire buffer. | |
3974 | Instead it should read a single packet worth of data and then | |
3975 | return the byte size of that packet to the caller. The caller (its | |
3976 | caller and its callers caller ;-) already contains code for | |
3977 | handling partial reads. */ | |
3978 | ||
449092f6 | 3979 | int |
fba45db2 | 3980 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3981 | { |
11cf8741 | 3982 | char *buf; |
c906108c | 3983 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3984 | long sizeof_buf; |
c906108c SS |
3985 | int origlen; |
3986 | ||
11cf8741 JM |
3987 | /* Create a buffer big enough for this packet. */ |
3988 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3989 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3990 | buf = alloca (sizeof_buf); | |
c906108c SS |
3991 | |
3992 | origlen = len; | |
3993 | while (len > 0) | |
3994 | { | |
c906108c SS |
3995 | char *p; |
3996 | int todo; | |
3997 | int i; | |
3998 | ||
c5aa993b | 3999 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4000 | |
4001 | /* construct "m"<memaddr>","<len>" */ | |
4002 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
4003 | memaddr = remote_address_masked (memaddr); | |
4004 | p = buf; | |
4005 | *p++ = 'm'; | |
4006 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4007 | *p++ = ','; | |
4008 | p += hexnumstr (p, (ULONGEST) todo); | |
4009 | *p = '\0'; | |
4010 | ||
4011 | putpkt (buf); | |
c2d11a7d | 4012 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4013 | |
66504d44 MS |
4014 | if (buf[0] == 'E' |
4015 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
4016 | && buf[3] == '\0') | |
c906108c SS |
4017 | { |
4018 | /* There is no correspondance between what the remote protocol uses | |
4019 | for errors and errno codes. We would like a cleaner way of | |
4020 | representing errors (big enough to include errno codes, bfd_error | |
4021 | codes, and others). But for now just return EIO. */ | |
4022 | errno = EIO; | |
4023 | return 0; | |
4024 | } | |
4025 | ||
c5aa993b JM |
4026 | /* Reply describes memory byte by byte, |
4027 | each byte encoded as two hex characters. */ | |
c906108c SS |
4028 | |
4029 | p = buf; | |
30559e10 | 4030 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4031 | { |
30559e10 MS |
4032 | /* Reply is short. This means that we were able to read |
4033 | only part of what we wanted to. */ | |
4034 | return i + (origlen - len); | |
c906108c SS |
4035 | } |
4036 | myaddr += todo; | |
4037 | memaddr += todo; | |
4038 | len -= todo; | |
4039 | } | |
4040 | return origlen; | |
4041 | } | |
4042 | \f | |
4043 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
4044 | transferring to or from debugger address BUFFER. Write to inferior if |
4045 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 4046 | for error. TARGET is unused. */ |
392a587b | 4047 | |
c906108c | 4048 | static int |
c338868a | 4049 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
0a65a603 | 4050 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4051 | struct target_ops *target) |
c906108c | 4052 | { |
392a587b JM |
4053 | CORE_ADDR targ_addr; |
4054 | int targ_len; | |
4930751a C |
4055 | int res; |
4056 | ||
f6684c31 AC |
4057 | /* Should this be the selected frame? */ |
4058 | gdbarch_remote_translate_xfer_address (current_gdbarch, current_regcache, | |
4059 | mem_addr, mem_len, | |
4060 | &targ_addr, &targ_len); | |
392a587b | 4061 | if (targ_len <= 0) |
c906108c | 4062 | return 0; |
c906108c | 4063 | |
4930751a C |
4064 | if (should_write) |
4065 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
4066 | else | |
4067 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
4068 | ||
4069 | return res; | |
c906108c SS |
4070 | } |
4071 | ||
c906108c | 4072 | static void |
fba45db2 | 4073 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4074 | { |
4075 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4076 | } | |
4077 | \f | |
4078 | /* Stuff for dealing with the packets which are part of this protocol. | |
4079 | See comment at top of file for details. */ | |
4080 | ||
4081 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
4082 | ||
4083 | static int | |
fba45db2 | 4084 | readchar (int timeout) |
c906108c SS |
4085 | { |
4086 | int ch; | |
4087 | ||
2cd58942 | 4088 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4089 | |
2acceee2 JM |
4090 | if (ch >= 0) |
4091 | return (ch & 0x7f); | |
4092 | ||
4093 | switch ((enum serial_rc) ch) | |
c906108c SS |
4094 | { |
4095 | case SERIAL_EOF: | |
2acceee2 | 4096 | target_mourn_inferior (); |
c906108c | 4097 | error ("Remote connection closed"); |
2acceee2 | 4098 | /* no return */ |
c906108c SS |
4099 | case SERIAL_ERROR: |
4100 | perror_with_name ("Remote communication error"); | |
2acceee2 | 4101 | /* no return */ |
c906108c | 4102 | case SERIAL_TIMEOUT: |
2acceee2 | 4103 | break; |
c906108c | 4104 | } |
2acceee2 | 4105 | return ch; |
c906108c SS |
4106 | } |
4107 | ||
4108 | /* Send the command in BUF to the remote machine, and read the reply | |
4109 | into BUF. Report an error if we get an error reply. */ | |
4110 | ||
4111 | static void | |
c2d11a7d JM |
4112 | remote_send (char *buf, |
4113 | long sizeof_buf) | |
c906108c SS |
4114 | { |
4115 | putpkt (buf); | |
c2d11a7d | 4116 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
4117 | |
4118 | if (buf[0] == 'E') | |
4119 | error ("Remote failure reply: %s", buf); | |
4120 | } | |
4121 | ||
4122 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4123 | string notation. */ | |
4124 | ||
4125 | static void | |
fba45db2 | 4126 | print_packet (char *buf) |
c906108c SS |
4127 | { |
4128 | puts_filtered ("\""); | |
43e526b9 | 4129 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4130 | puts_filtered ("\""); |
4131 | } | |
4132 | ||
4133 | int | |
fba45db2 | 4134 | putpkt (char *buf) |
c906108c SS |
4135 | { |
4136 | return putpkt_binary (buf, strlen (buf)); | |
4137 | } | |
4138 | ||
4139 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 4140 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
4141 | to account for the $, # and checksum, and for a possible /0 if we are |
4142 | debugging (remote_debug) and want to print the sent packet as a string */ | |
4143 | ||
4144 | static int | |
fba45db2 | 4145 | putpkt_binary (char *buf, int cnt) |
c906108c | 4146 | { |
d01949b6 | 4147 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4148 | int i; |
4149 | unsigned char csum = 0; | |
11cf8741 | 4150 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 4151 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 4152 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 4153 | |
c906108c SS |
4154 | int ch; |
4155 | int tcount = 0; | |
4156 | char *p; | |
4157 | ||
4158 | /* Copy the packet into buffer BUF2, encapsulating it | |
4159 | and giving it a checksum. */ | |
4160 | ||
c906108c SS |
4161 | p = buf2; |
4162 | *p++ = '$'; | |
4163 | ||
4164 | for (i = 0; i < cnt; i++) | |
4165 | { | |
4166 | csum += buf[i]; | |
4167 | *p++ = buf[i]; | |
4168 | } | |
4169 | *p++ = '#'; | |
4170 | *p++ = tohex ((csum >> 4) & 0xf); | |
4171 | *p++ = tohex (csum & 0xf); | |
4172 | ||
4173 | /* Send it over and over until we get a positive ack. */ | |
4174 | ||
4175 | while (1) | |
4176 | { | |
4177 | int started_error_output = 0; | |
4178 | ||
4179 | if (remote_debug) | |
4180 | { | |
4181 | *p = '\0'; | |
43e526b9 JM |
4182 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4183 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4184 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4185 | gdb_flush (gdb_stdlog); |
c906108c | 4186 | } |
2cd58942 | 4187 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
4188 | perror_with_name ("putpkt: write failed"); |
4189 | ||
4190 | /* read until either a timeout occurs (-2) or '+' is read */ | |
4191 | while (1) | |
4192 | { | |
4193 | ch = readchar (remote_timeout); | |
4194 | ||
c5aa993b | 4195 | if (remote_debug) |
c906108c SS |
4196 | { |
4197 | switch (ch) | |
4198 | { | |
4199 | case '+': | |
1216fa2c | 4200 | case '-': |
c906108c SS |
4201 | case SERIAL_TIMEOUT: |
4202 | case '$': | |
4203 | if (started_error_output) | |
4204 | { | |
4205 | putchar_unfiltered ('\n'); | |
4206 | started_error_output = 0; | |
4207 | } | |
4208 | } | |
4209 | } | |
4210 | ||
4211 | switch (ch) | |
4212 | { | |
4213 | case '+': | |
4214 | if (remote_debug) | |
0f71a2f6 | 4215 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4216 | return 1; |
1216fa2c AC |
4217 | case '-': |
4218 | if (remote_debug) | |
4219 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4220 | case SERIAL_TIMEOUT: |
c5aa993b | 4221 | tcount++; |
c906108c SS |
4222 | if (tcount > 3) |
4223 | return 0; | |
4224 | break; /* Retransmit buffer */ | |
4225 | case '$': | |
4226 | { | |
40e3f985 FN |
4227 | if (remote_debug) |
4228 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
4229 | /* It's probably an old response, and we're out of sync. |
4230 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 4231 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 4232 | continue; /* Now, go look for + */ |
c906108c SS |
4233 | } |
4234 | default: | |
4235 | if (remote_debug) | |
4236 | { | |
4237 | if (!started_error_output) | |
4238 | { | |
4239 | started_error_output = 1; | |
0f71a2f6 | 4240 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4241 | } |
0f71a2f6 | 4242 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4243 | } |
4244 | continue; | |
4245 | } | |
4246 | break; /* Here to retransmit */ | |
4247 | } | |
4248 | ||
4249 | #if 0 | |
4250 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4251 | able to get out next time we call QUIT, without anything as |
4252 | violent as interrupt_query. If we want to provide a way out of | |
4253 | here without getting to the next QUIT, it should be based on | |
4254 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4255 | if (quit_flag) |
4256 | { | |
4257 | quit_flag = 0; | |
4258 | interrupt_query (); | |
4259 | } | |
4260 | #endif | |
4261 | } | |
4262 | } | |
4263 | ||
0f71a2f6 JM |
4264 | static int remote_cisco_mode; |
4265 | ||
c906108c SS |
4266 | /* Come here after finding the start of the frame. Collect the rest |
4267 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4268 | compression. No more than sizeof_buf-1 characters are read so that |
4269 | the buffer can be NUL terminated. | |
c906108c | 4270 | |
c2d11a7d JM |
4271 | Returns -1 on error, number of characters in buffer (ignoring the |
4272 | trailing NULL) on success. (could be extended to return one of the | |
4273 | SERIAL status indications). */ | |
4274 | ||
4275 | static long | |
4276 | read_frame (char *buf, | |
4277 | long sizeof_buf) | |
c906108c SS |
4278 | { |
4279 | unsigned char csum; | |
c2d11a7d | 4280 | long bc; |
c906108c SS |
4281 | int c; |
4282 | ||
4283 | csum = 0; | |
c2d11a7d | 4284 | bc = 0; |
c906108c SS |
4285 | |
4286 | while (1) | |
4287 | { | |
c2d11a7d | 4288 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4289 | c = readchar (remote_timeout); |
c906108c SS |
4290 | switch (c) |
4291 | { | |
4292 | case SERIAL_TIMEOUT: | |
4293 | if (remote_debug) | |
0f71a2f6 | 4294 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4295 | return -1; |
c906108c SS |
4296 | case '$': |
4297 | if (remote_debug) | |
0f71a2f6 JM |
4298 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4299 | gdb_stdlog); | |
c2d11a7d | 4300 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4301 | case '#': |
4302 | { | |
4303 | unsigned char pktcsum; | |
e1b09194 AC |
4304 | int check_0 = 0; |
4305 | int check_1 = 0; | |
c906108c | 4306 | |
c2d11a7d | 4307 | buf[bc] = '\0'; |
c906108c | 4308 | |
e1b09194 AC |
4309 | check_0 = readchar (remote_timeout); |
4310 | if (check_0 >= 0) | |
4311 | check_1 = readchar (remote_timeout); | |
4312 | ||
4313 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
4314 | { | |
4315 | if (remote_debug) | |
4316 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4317 | return -1; | |
4318 | } | |
4319 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4320 | { |
4321 | if (remote_debug) | |
4322 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4323 | return -1; | |
4324 | } | |
c906108c | 4325 | |
e1b09194 | 4326 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4327 | if (csum == pktcsum) |
c2d11a7d | 4328 | return bc; |
c906108c | 4329 | |
c5aa993b | 4330 | if (remote_debug) |
c906108c | 4331 | { |
0f71a2f6 | 4332 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4333 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4334 | pktcsum, csum); |
4335 | fputs_filtered (buf, gdb_stdlog); | |
4336 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4337 | } |
c2d11a7d JM |
4338 | /* Number of characters in buffer ignoring trailing |
4339 | NUL. */ | |
4340 | return -1; | |
c906108c SS |
4341 | } |
4342 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4343 | { |
4344 | int repeat; | |
4345 | csum += c; | |
c906108c | 4346 | |
c2c6d25f JM |
4347 | if (remote_cisco_mode == 0) |
4348 | { | |
4349 | c = readchar (remote_timeout); | |
4350 | csum += c; | |
4351 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
4352 | } | |
4353 | else | |
4354 | { | |
4355 | /* Cisco's run-length encoding variant uses two | |
4356 | hex chars to represent the repeat count. */ | |
4357 | ||
4358 | c = readchar (remote_timeout); | |
4359 | csum += c; | |
4360 | repeat = fromhex (c) << 4; | |
4361 | c = readchar (remote_timeout); | |
4362 | csum += c; | |
4363 | repeat += fromhex (c); | |
4364 | } | |
c906108c | 4365 | |
c2d11a7d JM |
4366 | /* The character before ``*'' is repeated. */ |
4367 | ||
c2c6d25f | 4368 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4369 | && bc > 0 |
fb6e5c55 | 4370 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4371 | { |
c2d11a7d JM |
4372 | memset (&buf[bc], buf[bc - 1], repeat); |
4373 | bc += repeat; | |
c2c6d25f JM |
4374 | continue; |
4375 | } | |
4376 | ||
c2d11a7d | 4377 | buf[bc] = '\0'; |
c2c6d25f JM |
4378 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4379 | puts_filtered (buf); | |
4380 | puts_filtered ("\n"); | |
c2d11a7d | 4381 | return -1; |
c2c6d25f | 4382 | } |
c906108c | 4383 | default: |
c2d11a7d | 4384 | if (bc < sizeof_buf - 1) |
c906108c | 4385 | { |
c2d11a7d | 4386 | buf[bc++] = c; |
c906108c SS |
4387 | csum += c; |
4388 | continue; | |
4389 | } | |
4390 | ||
c2d11a7d | 4391 | buf[bc] = '\0'; |
c906108c SS |
4392 | puts_filtered ("Remote packet too long: "); |
4393 | puts_filtered (buf); | |
4394 | puts_filtered ("\n"); | |
4395 | ||
c2d11a7d | 4396 | return -1; |
c906108c SS |
4397 | } |
4398 | } | |
4399 | } | |
4400 | ||
4401 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4402 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4403 | this is used (in synchronous mode) to wait for a target that is is | |
4404 | executing user code to stop. */ | |
d9fcf2fb JM |
4405 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4406 | don't have to change all the calls to getpkt to deal with the | |
4407 | return value, because at the moment I don't know what the right | |
4408 | thing to do it for those. */ | |
c906108c | 4409 | void |
c2d11a7d JM |
4410 | getpkt (char *buf, |
4411 | long sizeof_buf, | |
4412 | int forever) | |
d9fcf2fb JM |
4413 | { |
4414 | int timed_out; | |
4415 | ||
4416 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4417 | } | |
4418 | ||
4419 | ||
4420 | /* Read a packet from the remote machine, with error checking, and | |
4421 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4422 | this is used (in synchronous mode) to wait for a target that is is | |
4423 | executing user code to stop. If FOREVER == 0, this function is | |
4424 | allowed to time out gracefully and return an indication of this to | |
4425 | the caller. */ | |
3172dc30 | 4426 | static int |
d9fcf2fb JM |
4427 | getpkt_sane (char *buf, |
4428 | long sizeof_buf, | |
4429 | int forever) | |
c906108c SS |
4430 | { |
4431 | int c; | |
4432 | int tries; | |
4433 | int timeout; | |
4434 | int val; | |
4435 | ||
c5aa993b | 4436 | strcpy (buf, "timeout"); |
c906108c SS |
4437 | |
4438 | if (forever) | |
4439 | { | |
c906108c | 4440 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4441 | } |
4442 | ||
4443 | else | |
4444 | timeout = remote_timeout; | |
4445 | ||
4446 | #define MAX_TRIES 3 | |
4447 | ||
4448 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4449 | { | |
4450 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4451 | continuously, but if it pauses, we'll get a zero from readchar |
4452 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4453 | |
4454 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4455 | After that, we expect characters to arrive at a brisk pace. They |
4456 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4457 | |
4458 | do | |
4459 | { | |
4460 | c = readchar (timeout); | |
4461 | ||
4462 | if (c == SERIAL_TIMEOUT) | |
4463 | { | |
2acceee2 | 4464 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4465 | { |
2acceee2 | 4466 | QUIT; |
c906108c SS |
4467 | target_mourn_inferior (); |
4468 | error ("Watchdog has expired. Target detached.\n"); | |
4469 | } | |
c906108c | 4470 | if (remote_debug) |
0f71a2f6 | 4471 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4472 | goto retry; |
4473 | } | |
4474 | } | |
4475 | while (c != '$'); | |
4476 | ||
4477 | /* We've found the start of a packet, now collect the data. */ | |
4478 | ||
c2d11a7d | 4479 | val = read_frame (buf, sizeof_buf); |
c906108c | 4480 | |
c2d11a7d | 4481 | if (val >= 0) |
c906108c SS |
4482 | { |
4483 | if (remote_debug) | |
43e526b9 JM |
4484 | { |
4485 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4486 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4487 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4488 | } | |
2cd58942 | 4489 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4490 | return 0; |
c906108c SS |
4491 | } |
4492 | ||
4493 | /* Try the whole thing again. */ | |
4494 | retry: | |
2cd58942 | 4495 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4496 | } |
4497 | ||
4498 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4499 | ||
4500 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4501 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4502 | return 1; |
c906108c SS |
4503 | } |
4504 | \f | |
4505 | static void | |
fba45db2 | 4506 | remote_kill (void) |
c906108c SS |
4507 | { |
4508 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4509 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4510 | if (kill_kludge) | |
4511 | { | |
4512 | kill_kludge = 0; | |
4513 | target_mourn_inferior (); | |
4514 | return; | |
4515 | } | |
4516 | ||
4517 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4518 | speaking terms with the remote system. */ | |
c5aa993b | 4519 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4520 | |
4521 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4522 | we do or not. For the existing stubs, kill is a noop. */ | |
4523 | target_mourn_inferior (); | |
4524 | } | |
4525 | ||
43ff13b4 JM |
4526 | /* Async version of remote_kill. */ |
4527 | static void | |
fba45db2 | 4528 | remote_async_kill (void) |
43ff13b4 JM |
4529 | { |
4530 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4531 | if (target_is_async_p ()) |
2cd58942 | 4532 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4533 | |
4534 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4535 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4536 | if (kill_kludge) | |
4537 | { | |
4538 | kill_kludge = 0; | |
4539 | target_mourn_inferior (); | |
4540 | return; | |
4541 | } | |
4542 | ||
4543 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4544 | speaking terms with the remote system. */ | |
c5aa993b | 4545 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4546 | |
4547 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4548 | we do or not. For the existing stubs, kill is a noop. */ | |
4549 | target_mourn_inferior (); | |
4550 | } | |
4551 | ||
c906108c | 4552 | static void |
fba45db2 | 4553 | remote_mourn (void) |
c906108c SS |
4554 | { |
4555 | remote_mourn_1 (&remote_ops); | |
4556 | } | |
4557 | ||
53a5351d | 4558 | static void |
fba45db2 | 4559 | remote_async_mourn (void) |
53a5351d JM |
4560 | { |
4561 | remote_mourn_1 (&remote_async_ops); | |
4562 | } | |
4563 | ||
c906108c | 4564 | static void |
fba45db2 | 4565 | extended_remote_mourn (void) |
c906108c SS |
4566 | { |
4567 | /* We do _not_ want to mourn the target like this; this will | |
4568 | remove the extended remote target from the target stack, | |
4569 | and the next time the user says "run" it'll fail. | |
4570 | ||
4571 | FIXME: What is the right thing to do here? */ | |
4572 | #if 0 | |
4573 | remote_mourn_1 (&extended_remote_ops); | |
4574 | #endif | |
4575 | } | |
4576 | ||
4577 | /* Worker function for remote_mourn. */ | |
4578 | static void | |
fba45db2 | 4579 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4580 | { |
4581 | unpush_target (target); | |
4582 | generic_mourn_inferior (); | |
4583 | } | |
4584 | ||
4585 | /* In the extended protocol we want to be able to do things like | |
4586 | "run" and have them basically work as expected. So we need | |
4587 | a special create_inferior function. | |
4588 | ||
4589 | FIXME: One day add support for changing the exec file | |
4590 | we're debugging, arguments and an environment. */ | |
4591 | ||
4592 | static void | |
fba45db2 | 4593 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4594 | { |
4595 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4596 | the remote server. */ | |
4597 | remove_breakpoints (); | |
4598 | ||
4599 | /* Now restart the remote server. */ | |
4600 | extended_remote_restart (); | |
4601 | ||
4602 | /* Now put the breakpoints back in. This way we're safe if the | |
4603 | restart function works via a unix fork on the remote side. */ | |
4604 | insert_breakpoints (); | |
4605 | ||
4606 | /* Clean up from the last time we were running. */ | |
4607 | clear_proceed_status (); | |
4608 | ||
4609 | /* Let the remote process run. */ | |
4610 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4611 | } | |
4612 | ||
43ff13b4 JM |
4613 | /* Async version of extended_remote_create_inferior. */ |
4614 | static void | |
fba45db2 | 4615 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4616 | { |
4617 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4618 | the remote server. */ | |
4619 | remove_breakpoints (); | |
4620 | ||
4621 | /* If running asynchronously, register the target file descriptor | |
4622 | with the event loop. */ | |
2acceee2 JM |
4623 | if (event_loop_p && target_can_async_p ()) |
4624 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4625 | |
4626 | /* Now restart the remote server. */ | |
4627 | extended_remote_restart (); | |
4628 | ||
4629 | /* Now put the breakpoints back in. This way we're safe if the | |
4630 | restart function works via a unix fork on the remote side. */ | |
4631 | insert_breakpoints (); | |
4632 | ||
4633 | /* Clean up from the last time we were running. */ | |
4634 | clear_proceed_status (); | |
4635 | ||
4636 | /* Let the remote process run. */ | |
4637 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4638 | } | |
c906108c | 4639 | \f |
c5aa993b | 4640 | |
aaab4dba | 4641 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4642 | instruction than other targets; in those use |
4643 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4644 | Also, bi-endian targets may define | |
4645 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4646 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4647 | just call the standard routines that are in mem-break.c. */ | |
4648 | ||
4649 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4650 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4651 | the ARCH-OS-tdep.c code can override the default. */ | |
4652 | ||
4653 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4654 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4655 | #endif |
4656 | ||
7fec2c59 | 4657 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4658 | |
4659 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4660 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4661 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4662 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4663 | #endif |
4664 | ||
7fec2c59 AC |
4665 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4666 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4667 | |
7fec2c59 | 4668 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4669 | |
aaab4dba AC |
4670 | /* Insert a breakpoint on targets that don't have any better |
4671 | breakpoint support. We read the contents of the target location | |
4672 | and stash it, then overwrite it with a breakpoint instruction. | |
4673 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4674 | is a pointer to memory allocated for saving the target contents. | |
4675 | It is guaranteed by the caller to be long enough to save the number | |
4676 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4677 | |
4678 | static int | |
fba45db2 | 4679 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4680 | { |
d01949b6 | 4681 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4682 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4683 | int val; |
96baa820 JM |
4684 | #endif |
4685 | int bp_size; | |
4686 | ||
d471ea57 AC |
4687 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4688 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4689 | fails, and the user has explicitly requested the Z support then | |
4690 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4691 | |
d471ea57 | 4692 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4693 | { |
d01949b6 | 4694 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4695 | char *p = buf; |
96baa820 | 4696 | |
0caabb7e | 4697 | addr = remote_address_masked (addr); |
96baa820 JM |
4698 | *(p++) = 'Z'; |
4699 | *(p++) = '0'; | |
4700 | *(p++) = ','; | |
0caabb7e AC |
4701 | p += hexnumstr (p, (ULONGEST) addr); |
4702 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4703 | sprintf (p, ",%d", bp_size); |
4704 | ||
4705 | putpkt (buf); | |
d01949b6 | 4706 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4707 | |
d471ea57 | 4708 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4709 | { |
d471ea57 AC |
4710 | case PACKET_ERROR: |
4711 | return -1; | |
4712 | case PACKET_OK: | |
4713 | return 0; | |
4714 | case PACKET_UNKNOWN: | |
4715 | break; | |
96baa820 JM |
4716 | } |
4717 | } | |
c906108c | 4718 | |
7fec2c59 | 4719 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4720 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4721 | ||
4722 | if (val == 0) | |
4723 | { | |
d7449b42 | 4724 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4725 | val = target_write_memory (addr, (char *) big_break_insn, |
4726 | sizeof big_break_insn); | |
4727 | else | |
4728 | val = target_write_memory (addr, (char *) little_break_insn, | |
4729 | sizeof little_break_insn); | |
4730 | } | |
4731 | ||
4732 | return val; | |
4733 | #else | |
4734 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4735 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4736 | } |
4737 | ||
4738 | static int | |
fba45db2 | 4739 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4740 | { |
d01949b6 | 4741 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4742 | int bp_size; |
4743 | ||
d471ea57 | 4744 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4745 | { |
d01949b6 | 4746 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4747 | char *p = buf; |
96baa820 JM |
4748 | |
4749 | *(p++) = 'z'; | |
4750 | *(p++) = '0'; | |
4751 | *(p++) = ','; | |
4752 | ||
0caabb7e AC |
4753 | addr = remote_address_masked (addr); |
4754 | p += hexnumstr (p, (ULONGEST) addr); | |
4755 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4756 | sprintf (p, ",%d", bp_size); |
4757 | ||
4758 | putpkt (buf); | |
d01949b6 | 4759 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4760 | |
4761 | return (buf[0] == 'E'); | |
4762 | } | |
4763 | ||
7fec2c59 | 4764 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4765 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4766 | #else | |
4767 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4768 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4769 | } |
4770 | ||
d471ea57 AC |
4771 | static int |
4772 | watchpoint_to_Z_packet (int type) | |
4773 | { | |
4774 | switch (type) | |
4775 | { | |
4776 | case hw_write: | |
4777 | return 2; | |
4778 | break; | |
4779 | case hw_read: | |
4780 | return 3; | |
4781 | break; | |
4782 | case hw_access: | |
4783 | return 4; | |
4784 | break; | |
4785 | default: | |
8e65ff28 AC |
4786 | internal_error (__FILE__, __LINE__, |
4787 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4788 | } |
4789 | } | |
4790 | ||
3c3bea1c | 4791 | static int |
fba45db2 | 4792 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4793 | { |
d01949b6 AC |
4794 | struct remote_state *rs = get_remote_state (); |
4795 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4796 | char *p; |
d471ea57 | 4797 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4798 | |
d471ea57 AC |
4799 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4800 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4801 | remote_protocol_Z[packet].name, | |
4802 | remote_protocol_Z[packet].title); | |
96baa820 | 4803 | |
d471ea57 | 4804 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4805 | p = strchr (buf, '\0'); |
4806 | addr = remote_address_masked (addr); | |
4807 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4808 | sprintf (p, ",%x", len); |
96baa820 JM |
4809 | |
4810 | putpkt (buf); | |
d01949b6 | 4811 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4812 | |
d471ea57 AC |
4813 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4814 | { | |
4815 | case PACKET_ERROR: | |
4816 | case PACKET_UNKNOWN: | |
4817 | return -1; | |
4818 | case PACKET_OK: | |
4819 | return 0; | |
4820 | } | |
8e65ff28 AC |
4821 | internal_error (__FILE__, __LINE__, |
4822 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4823 | } |
4824 | ||
d471ea57 | 4825 | |
3c3bea1c | 4826 | static int |
fba45db2 | 4827 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4828 | { |
d01949b6 AC |
4829 | struct remote_state *rs = get_remote_state (); |
4830 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4831 | char *p; |
d471ea57 AC |
4832 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4833 | ||
4834 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4835 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4836 | remote_protocol_Z[packet].name, | |
4837 | remote_protocol_Z[packet].title); | |
96baa820 | 4838 | |
d471ea57 | 4839 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4840 | p = strchr (buf, '\0'); |
4841 | addr = remote_address_masked (addr); | |
4842 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4843 | sprintf (p, ",%x", len); |
96baa820 | 4844 | putpkt (buf); |
d01949b6 | 4845 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4846 | |
d471ea57 AC |
4847 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4848 | { | |
4849 | case PACKET_ERROR: | |
4850 | case PACKET_UNKNOWN: | |
4851 | return -1; | |
4852 | case PACKET_OK: | |
4853 | return 0; | |
4854 | } | |
8e65ff28 AC |
4855 | internal_error (__FILE__, __LINE__, |
4856 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4857 | } |
4858 | ||
3c3bea1c | 4859 | |
501eef12 AC |
4860 | int remote_hw_watchpoint_limit = -1; |
4861 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4862 | |
b9362cc7 | 4863 | static int |
3c3bea1c | 4864 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4865 | { |
3c3bea1c GS |
4866 | if (type == bp_hardware_breakpoint) |
4867 | { | |
4868 | if (remote_hw_breakpoint_limit == 0) | |
4869 | return 0; | |
501eef12 AC |
4870 | else if (remote_hw_breakpoint_limit < 0) |
4871 | return 1; | |
3c3bea1c GS |
4872 | else if (cnt <= remote_hw_breakpoint_limit) |
4873 | return 1; | |
4874 | } | |
4875 | else | |
4876 | { | |
4877 | if (remote_hw_watchpoint_limit == 0) | |
4878 | return 0; | |
501eef12 AC |
4879 | else if (remote_hw_watchpoint_limit < 0) |
4880 | return 1; | |
3c3bea1c GS |
4881 | else if (ot) |
4882 | return -1; | |
4883 | else if (cnt <= remote_hw_watchpoint_limit) | |
4884 | return 1; | |
4885 | } | |
4886 | return -1; | |
4887 | } | |
4888 | ||
b9362cc7 | 4889 | static int |
3c3bea1c GS |
4890 | remote_stopped_by_watchpoint (void) |
4891 | { | |
4892 | return remote_stopped_by_watchpoint_p; | |
4893 | } | |
4894 | ||
b9362cc7 | 4895 | static CORE_ADDR |
3c3bea1c GS |
4896 | remote_stopped_data_address (void) |
4897 | { | |
4898 | if (remote_stopped_by_watchpoint ()) | |
4899 | return remote_watch_data_address; | |
4900 | return (CORE_ADDR)0; | |
4901 | } | |
4902 | ||
4903 | ||
4904 | static int | |
4905 | remote_insert_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
4906 | { | |
4907 | int len = 0; | |
d01949b6 AC |
4908 | struct remote_state *rs = get_remote_state (); |
4909 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4910 | char *p = buf; |
96baa820 | 4911 | |
c8189ed1 GS |
4912 | /* The length field should be set to the size of a breakpoint |
4913 | instruction. */ | |
4914 | ||
4915 | BREAKPOINT_FROM_PC (&addr, &len); | |
3c3bea1c | 4916 | |
d471ea57 AC |
4917 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4918 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4919 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4920 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4921 | ||
96baa820 JM |
4922 | *(p++) = 'Z'; |
4923 | *(p++) = '1'; | |
4924 | *(p++) = ','; | |
4925 | ||
4926 | addr = remote_address_masked (addr); | |
4927 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4928 | sprintf (p, ",%x", len); |
96baa820 JM |
4929 | |
4930 | putpkt (buf); | |
d01949b6 | 4931 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4932 | |
d471ea57 AC |
4933 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4934 | { | |
4935 | case PACKET_ERROR: | |
4936 | case PACKET_UNKNOWN: | |
4937 | return -1; | |
4938 | case PACKET_OK: | |
4939 | return 0; | |
4940 | } | |
8e65ff28 | 4941 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4942 | "remote_insert_hw_breakpoint: reached end of function"); |
96baa820 JM |
4943 | } |
4944 | ||
d471ea57 | 4945 | |
3c3bea1c GS |
4946 | static int |
4947 | remote_remove_hw_breakpoint (CORE_ADDR addr, char *shadow) | |
96baa820 | 4948 | { |
3c3bea1c | 4949 | int len; |
d01949b6 AC |
4950 | struct remote_state *rs = get_remote_state (); |
4951 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4952 | char *p = buf; |
c8189ed1 GS |
4953 | |
4954 | /* The length field should be set to the size of a breakpoint | |
4955 | instruction. */ | |
4956 | ||
4957 | BREAKPOINT_FROM_PC (&addr, &len); | |
4958 | ||
d471ea57 AC |
4959 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4960 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4961 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4962 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4963 | ||
96baa820 JM |
4964 | *(p++) = 'z'; |
4965 | *(p++) = '1'; | |
4966 | *(p++) = ','; | |
4967 | ||
4968 | addr = remote_address_masked (addr); | |
4969 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4970 | sprintf (p, ",%x", len); |
96baa820 JM |
4971 | |
4972 | putpkt(buf); | |
d01949b6 | 4973 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4974 | |
d471ea57 AC |
4975 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4976 | { | |
4977 | case PACKET_ERROR: | |
4978 | case PACKET_UNKNOWN: | |
4979 | return -1; | |
4980 | case PACKET_OK: | |
4981 | return 0; | |
4982 | } | |
8e65ff28 | 4983 | internal_error (__FILE__, __LINE__, |
3c3bea1c | 4984 | "remote_remove_hw_breakpoint: reached end of function"); |
96baa820 | 4985 | } |
96baa820 | 4986 | |
c906108c SS |
4987 | /* Some targets are only capable of doing downloads, and afterwards |
4988 | they switch to the remote serial protocol. This function provides | |
4989 | a clean way to get from the download target to the remote target. | |
4990 | It's basically just a wrapper so that we don't have to expose any | |
4991 | of the internal workings of remote.c. | |
4992 | ||
4993 | Prior to calling this routine, you should shutdown the current | |
4994 | target code, else you will get the "A program is being debugged | |
4995 | already..." message. Usually a call to pop_target() suffices. */ | |
4996 | ||
4997 | void | |
fba45db2 | 4998 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4999 | { |
5000 | printf_filtered ("Switching to remote protocol\n"); | |
5001 | remote_open (name, from_tty); | |
5002 | } | |
5003 | ||
c906108c SS |
5004 | /* Table used by the crc32 function to calcuate the checksum. */ |
5005 | ||
c5aa993b JM |
5006 | static unsigned long crc32_table[256] = |
5007 | {0, 0}; | |
c906108c SS |
5008 | |
5009 | static unsigned long | |
fba45db2 | 5010 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5011 | { |
c5aa993b | 5012 | if (!crc32_table[1]) |
c906108c SS |
5013 | { |
5014 | /* Initialize the CRC table and the decoding table. */ | |
5015 | int i, j; | |
5016 | unsigned int c; | |
5017 | ||
5018 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5019 | { |
5020 | for (c = i << 24, j = 8; j > 0; --j) | |
5021 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5022 | crc32_table[i] = c; | |
5023 | } | |
c906108c SS |
5024 | } |
5025 | ||
5026 | while (len--) | |
5027 | { | |
5028 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5029 | buf++; | |
5030 | } | |
5031 | return crc; | |
5032 | } | |
5033 | ||
5034 | /* compare-sections command | |
5035 | ||
5036 | With no arguments, compares each loadable section in the exec bfd | |
5037 | with the same memory range on the target, and reports mismatches. | |
5038 | Useful for verifying the image on the target against the exec file. | |
5039 | Depends on the target understanding the new "qCRC:" request. */ | |
5040 | ||
e514a9d6 JM |
5041 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5042 | target method (target verify memory) and generic version of the | |
5043 | actual command. This will allow other high-level code (especially | |
5044 | generic_load()) to make use of this target functionality. */ | |
5045 | ||
c906108c | 5046 | static void |
fba45db2 | 5047 | compare_sections_command (char *args, int from_tty) |
c906108c | 5048 | { |
d01949b6 | 5049 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5050 | asection *s; |
5051 | unsigned long host_crc, target_crc; | |
5052 | extern bfd *exec_bfd; | |
5053 | struct cleanup *old_chain; | |
085dd6e6 JM |
5054 | char *tmp; |
5055 | char *sectdata; | |
ce359b09 | 5056 | const char *sectname; |
d01949b6 | 5057 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
5058 | bfd_size_type size; |
5059 | bfd_vma lma; | |
5060 | int matched = 0; | |
5061 | int mismatched = 0; | |
5062 | ||
5063 | if (!exec_bfd) | |
5064 | error ("command cannot be used without an exec file"); | |
5065 | if (!current_target.to_shortname || | |
5066 | strcmp (current_target.to_shortname, "remote") != 0) | |
5067 | error ("command can only be used with remote target"); | |
5068 | ||
c5aa993b | 5069 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5070 | { |
5071 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5072 | continue; /* skip non-loadable section */ |
c906108c SS |
5073 | |
5074 | size = bfd_get_section_size_before_reloc (s); | |
5075 | if (size == 0) | |
c5aa993b | 5076 | continue; /* skip zero-length section */ |
c906108c | 5077 | |
ce359b09 | 5078 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5079 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5080 | continue; /* not the section selected by user */ |
c906108c | 5081 | |
c5aa993b | 5082 | matched = 1; /* do this section */ |
c906108c SS |
5083 | lma = s->lma; |
5084 | /* FIXME: assumes lma can fit into long */ | |
5085 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
5086 | putpkt (buf); | |
5087 | ||
5088 | /* be clever; compute the host_crc before waiting for target reply */ | |
5089 | sectdata = xmalloc (size); | |
b8c9b27d | 5090 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5091 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5092 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5093 | ||
d01949b6 | 5094 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 5095 | if (buf[0] == 'E') |
823ca731 AC |
5096 | error ("target memory fault, section %s, range 0x%s -- 0x%s", |
5097 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5098 | if (buf[0] != 'C') |
5099 | error ("remote target does not support this operation"); | |
5100 | ||
5101 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
5102 | target_crc = target_crc * 16 + fromhex (*tmp); | |
5103 | ||
d4f3574e SS |
5104 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5105 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5106 | if (host_crc == target_crc) |
5107 | printf_filtered ("matched.\n"); | |
5108 | else | |
c5aa993b JM |
5109 | { |
5110 | printf_filtered ("MIS-MATCHED!\n"); | |
5111 | mismatched++; | |
5112 | } | |
c906108c SS |
5113 | |
5114 | do_cleanups (old_chain); | |
5115 | } | |
5116 | if (mismatched > 0) | |
5117 | warning ("One or more sections of the remote executable does not match\n\ | |
5118 | the loaded file\n"); | |
5119 | if (args && !matched) | |
5120 | printf_filtered ("No loaded section named '%s'.\n", args); | |
5121 | } | |
5122 | ||
1e3ff5ad | 5123 | static LONGEST |
4b8a223f | 5124 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
8aa91c1e | 5125 | const char *annex, void *readbuf, const void *writebuf, |
1e3ff5ad | 5126 | ULONGEST offset, LONGEST len) |
c906108c | 5127 | { |
d01949b6 | 5128 | struct remote_state *rs = get_remote_state (); |
c906108c | 5129 | int i; |
d01949b6 | 5130 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 5131 | char *p2 = &buf2[0]; |
1e3ff5ad | 5132 | char query_type; |
c906108c | 5133 | |
4b8a223f AC |
5134 | /* Only handle reads. */ |
5135 | if (writebuf != NULL || readbuf == NULL) | |
5136 | return -1; | |
5137 | ||
1e3ff5ad AC |
5138 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5139 | objects!!! Instead specify new query packets. */ | |
5140 | switch (object) | |
c906108c | 5141 | { |
1e3ff5ad AC |
5142 | case TARGET_OBJECT_KOD: |
5143 | query_type = 'K'; | |
5144 | break; | |
5145 | case TARGET_OBJECT_AVR: | |
5146 | query_type = 'R'; | |
5147 | break; | |
5148 | default: | |
c906108c SS |
5149 | return -1; |
5150 | } | |
5151 | ||
4b8a223f | 5152 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5153 | buffer size. */ |
4b8a223f | 5154 | if (offset == 0 && len == 0) |
1e3ff5ad AC |
5155 | return (rs->remote_packet_size); |
5156 | /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is | |
5157 | not large enough let the caller. */ | |
5158 | if (len < (rs->remote_packet_size)) | |
5159 | return -1; | |
5160 | len = rs->remote_packet_size; | |
5161 | ||
c906108c | 5162 | /* except for querying the minimum buffer size, target must be open */ |
c5aa993b | 5163 | if (!remote_desc) |
c906108c SS |
5164 | error ("remote query is only available after target open"); |
5165 | ||
1e3ff5ad | 5166 | gdb_assert (annex != NULL); |
4b8a223f | 5167 | gdb_assert (readbuf != NULL); |
c906108c SS |
5168 | |
5169 | *p2++ = 'q'; | |
5170 | *p2++ = query_type; | |
5171 | ||
5172 | /* we used one buffer char for the remote protocol q command and another | |
5173 | for the query type. As the remote protocol encapsulation uses 4 chars | |
5174 | plus one extra in case we are debugging (remote_debug), | |
5175 | we have PBUFZIZ - 7 left to pack the query string */ | |
5176 | i = 0; | |
1e3ff5ad | 5177 | while (annex[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c | 5178 | { |
1e3ff5ad AC |
5179 | /* Bad caller may have sent forbidden characters. */ |
5180 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5181 | *p2++ = annex[i]; | |
c906108c SS |
5182 | i++; |
5183 | } | |
1e3ff5ad AC |
5184 | *p2 = '\0'; |
5185 | gdb_assert (annex[i] == '\0'); | |
c906108c SS |
5186 | |
5187 | i = putpkt (buf2); | |
c5aa993b JM |
5188 | if (i < 0) |
5189 | return i; | |
c906108c | 5190 | |
4b8a223f | 5191 | getpkt (readbuf, len, 0); |
c906108c | 5192 | |
4b8a223f | 5193 | return strlen (readbuf); |
c906108c SS |
5194 | } |
5195 | ||
96baa820 JM |
5196 | static void |
5197 | remote_rcmd (char *command, | |
d9fcf2fb | 5198 | struct ui_file *outbuf) |
96baa820 | 5199 | { |
d01949b6 | 5200 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5201 | int i; |
d01949b6 | 5202 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5203 | char *p = buf; |
5204 | ||
5205 | if (!remote_desc) | |
5206 | error ("remote rcmd is only available after target open"); | |
5207 | ||
7be570e7 JM |
5208 | /* Send a NULL command across as an empty command */ |
5209 | if (command == NULL) | |
5210 | command = ""; | |
5211 | ||
96baa820 JM |
5212 | /* The query prefix */ |
5213 | strcpy (buf, "qRcmd,"); | |
5214 | p = strchr (buf, '\0'); | |
5215 | ||
d01949b6 | 5216 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5217 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5218 | ||
5219 | /* Encode the actual command */ | |
30559e10 | 5220 | bin2hex (command, p, 0); |
96baa820 JM |
5221 | |
5222 | if (putpkt (buf) < 0) | |
5223 | error ("Communication problem with target\n"); | |
5224 | ||
5225 | /* get/display the response */ | |
5226 | while (1) | |
5227 | { | |
5228 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
5229 | buf[0] = '\0'; | |
d01949b6 | 5230 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5231 | if (buf[0] == '\0') |
5232 | error ("Target does not support this command\n"); | |
5233 | if (buf[0] == 'O' && buf[1] != 'K') | |
5234 | { | |
5235 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
5236 | continue; | |
5237 | } | |
5238 | if (strcmp (buf, "OK") == 0) | |
5239 | break; | |
7be570e7 JM |
5240 | if (strlen (buf) == 3 && buf[0] == 'E' |
5241 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5242 | { | |
5243 | error ("Protocol error with Rcmd"); | |
5244 | } | |
96baa820 JM |
5245 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5246 | { | |
5247 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5248 | fputc_unfiltered (c, outbuf); | |
5249 | } | |
5250 | break; | |
5251 | } | |
5252 | } | |
5253 | ||
c906108c | 5254 | static void |
fba45db2 | 5255 | packet_command (char *args, int from_tty) |
c906108c | 5256 | { |
d01949b6 AC |
5257 | struct remote_state *rs = get_remote_state (); |
5258 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5259 | |
c5aa993b | 5260 | if (!remote_desc) |
c906108c SS |
5261 | error ("command can only be used with remote target"); |
5262 | ||
c5aa993b | 5263 | if (!args) |
c906108c SS |
5264 | error ("remote-packet command requires packet text as argument"); |
5265 | ||
5266 | puts_filtered ("sending: "); | |
5267 | print_packet (args); | |
5268 | puts_filtered ("\n"); | |
5269 | putpkt (args); | |
5270 | ||
d01949b6 | 5271 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5272 | puts_filtered ("received: "); |
5273 | print_packet (buf); | |
5274 | puts_filtered ("\n"); | |
5275 | } | |
5276 | ||
5277 | #if 0 | |
5278 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
5279 | ||
a14ed312 | 5280 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5281 | |
a14ed312 | 5282 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5283 | |
a14ed312 | 5284 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5285 | |
a14ed312 | 5286 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5287 | |
a14ed312 | 5288 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 5289 | |
a14ed312 | 5290 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5291 | |
a14ed312 | 5292 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5293 | |
a14ed312 | 5294 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5295 | |
a14ed312 | 5296 | static void init_remote_threadtests (void); |
c906108c | 5297 | |
c5aa993b | 5298 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5299 | |
5300 | static void | |
fba45db2 | 5301 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5302 | { |
5303 | int sample_thread = SAMPLE_THREAD; | |
5304 | ||
5305 | printf_filtered ("Remote threadset test\n"); | |
5306 | set_thread (sample_thread, 1); | |
5307 | } | |
5308 | ||
5309 | ||
5310 | static void | |
fba45db2 | 5311 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5312 | { |
5313 | int sample_thread = SAMPLE_THREAD; | |
5314 | ||
39f77062 | 5315 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5316 | printf_filtered ("PASS: Thread alive test\n"); |
5317 | else | |
5318 | printf_filtered ("FAIL: Thread alive test\n"); | |
5319 | } | |
5320 | ||
a14ed312 | 5321 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5322 | |
5323 | void | |
fba45db2 | 5324 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5325 | { |
5326 | char hexid[20]; | |
5327 | ||
5328 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5329 | hexid[16] = 0; | |
5330 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5331 | } | |
5332 | ||
5333 | static void | |
fba45db2 | 5334 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5335 | { |
5336 | int startflag = 1; | |
5337 | threadref nextthread; | |
5338 | int done, result_count; | |
5339 | threadref threadlist[3]; | |
5340 | ||
5341 | printf_filtered ("Remote Threadlist test\n"); | |
5342 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5343 | &result_count, &threadlist[0])) | |
5344 | printf_filtered ("FAIL: threadlist test\n"); | |
5345 | else | |
5346 | { | |
5347 | threadref *scan = threadlist; | |
5348 | threadref *limit = scan + result_count; | |
5349 | ||
5350 | while (scan < limit) | |
5351 | output_threadid (" thread ", scan++); | |
5352 | } | |
5353 | } | |
5354 | ||
5355 | void | |
fba45db2 | 5356 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5357 | { |
5358 | output_threadid ("Threadid: ", &info->threadid); | |
5359 | printf_filtered ("Name: %s\n ", info->shortname); | |
5360 | printf_filtered ("State: %s\n", info->display); | |
5361 | printf_filtered ("other: %s\n\n", info->more_display); | |
5362 | } | |
5363 | ||
5364 | int | |
fba45db2 | 5365 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5366 | { |
5367 | int result; | |
5368 | int set; | |
5369 | struct gdb_ext_thread_info threadinfo; | |
5370 | ||
5371 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5372 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5373 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5374 | display_thread_info (&threadinfo); | |
5375 | return result; | |
5376 | } | |
5377 | ||
5378 | static void | |
fba45db2 | 5379 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5380 | { |
5381 | int athread = SAMPLE_THREAD; | |
5382 | threadref thread; | |
5383 | int set; | |
5384 | ||
5385 | int_to_threadref (&thread, athread); | |
5386 | printf_filtered ("Remote Threadinfo test\n"); | |
5387 | if (!get_and_display_threadinfo (&thread)) | |
5388 | printf_filtered ("FAIL cannot get thread info\n"); | |
5389 | } | |
5390 | ||
5391 | static int | |
fba45db2 | 5392 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5393 | { |
5394 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5395 | return get_and_display_threadinfo (ref); | |
5396 | } | |
5397 | ||
5398 | static void | |
fba45db2 | 5399 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5400 | { |
5401 | printf_filtered ("Remote Threadlist update test\n"); | |
5402 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5403 | } | |
5404 | ||
5405 | static void | |
5406 | init_remote_threadtests (void) | |
5407 | { | |
5408 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5409 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5410 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5411 | "Fetch and display info about one thread"); | |
5412 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5413 | "Test setting to a different thread"); | |
5414 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5415 | "Iterate through updating all remote thread info"); | |
5416 | add_com ("talive", class_obscure, threadalive_test, | |
5417 | " Remote thread alive test "); | |
5418 | } | |
5419 | ||
5420 | #endif /* 0 */ | |
5421 | ||
f3fb8c85 MS |
5422 | /* Convert a thread ID to a string. Returns the string in a static |
5423 | buffer. */ | |
5424 | ||
5425 | static char * | |
39f77062 | 5426 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5427 | { |
5428 | static char buf[30]; | |
5429 | ||
39f77062 | 5430 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5431 | return buf; |
5432 | } | |
5433 | ||
c906108c | 5434 | static void |
fba45db2 | 5435 | init_remote_ops (void) |
c906108c | 5436 | { |
c5aa993b | 5437 | remote_ops.to_shortname = "remote"; |
c906108c | 5438 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5439 | remote_ops.to_doc = |
c906108c | 5440 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5441 | Specify the serial device it is connected to\n\ |
5442 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5443 | remote_ops.to_open = remote_open; |
5444 | remote_ops.to_close = remote_close; | |
c906108c | 5445 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5446 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5447 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5448 | remote_ops.to_wait = remote_wait; |
5449 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5450 | remote_ops.to_store_registers = remote_store_registers; | |
5451 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5452 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5453 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5454 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5455 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5456 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5457 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5458 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5459 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5460 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5461 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5462 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5463 | remote_ops.to_kill = remote_kill; |
5464 | remote_ops.to_load = generic_load; | |
c906108c SS |
5465 | remote_ops.to_mourn_inferior = remote_mourn; |
5466 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5467 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5468 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5469 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5470 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5471 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5472 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5473 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5474 | remote_ops.to_has_all_memory = 1; |
5475 | remote_ops.to_has_memory = 1; | |
5476 | remote_ops.to_has_stack = 1; | |
5477 | remote_ops.to_has_registers = 1; | |
5478 | remote_ops.to_has_execution = 1; | |
5479 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5480 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5481 | } |
5482 | ||
5483 | /* Set up the extended remote vector by making a copy of the standard | |
5484 | remote vector and adding to it. */ | |
5485 | ||
5486 | static void | |
fba45db2 | 5487 | init_extended_remote_ops (void) |
c906108c SS |
5488 | { |
5489 | extended_remote_ops = remote_ops; | |
5490 | ||
0f71a2f6 | 5491 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5492 | extended_remote_ops.to_longname = |
c906108c | 5493 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5494 | extended_remote_ops.to_doc = |
c906108c SS |
5495 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5496 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5497 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5498 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5499 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5500 | } |
5501 | ||
5502 | /* | |
5503 | * Command: info remote-process | |
5504 | * | |
5505 | * This implements Cisco's version of the "info proc" command. | |
5506 | * | |
5507 | * This query allows the target stub to return an arbitrary string | |
5508 | * (or strings) giving arbitrary information about the target process. | |
5509 | * This is optional; the target stub isn't required to implement it. | |
5510 | * | |
5511 | * Syntax: qfProcessInfo request first string | |
5512 | * qsProcessInfo request subsequent string | |
5513 | * reply: 'O'<hex-encoded-string> | |
5514 | * 'l' last reply (empty) | |
5515 | */ | |
5516 | ||
5517 | static void | |
c2d11a7d | 5518 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5519 | { |
d01949b6 AC |
5520 | struct remote_state *rs = get_remote_state (); |
5521 | char *buf = alloca (rs->remote_packet_size); | |
0f71a2f6 JM |
5522 | |
5523 | if (remote_desc == 0) | |
5524 | error ("Command can only be used when connected to the remote target."); | |
5525 | ||
5526 | putpkt ("qfProcessInfo"); | |
d01949b6 | 5527 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 | 5528 | if (buf[0] == 0) |
c5aa993b | 5529 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5530 | |
5531 | if (buf[0] == 'E') | |
5532 | error ("info proc: target error."); | |
5533 | ||
c5aa993b | 5534 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5535 | { |
5536 | remote_console_output (&buf[1]); | |
5537 | putpkt ("qsProcessInfo"); | |
d01949b6 | 5538 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 JM |
5539 | } |
5540 | } | |
5541 | ||
5542 | /* | |
5543 | * Target Cisco | |
5544 | */ | |
5545 | ||
5546 | static void | |
c2d11a7d | 5547 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 | 5548 | { |
36918e70 | 5549 | int ex; |
0f71a2f6 | 5550 | if (name == 0) |
22e04375 AC |
5551 | error ("To open a remote debug connection, you need to specify what \n" |
5552 | "device is attached to the remote system (e.g. host:port)."); | |
0f71a2f6 | 5553 | |
6426a772 JM |
5554 | /* See FIXME above */ |
5555 | wait_forever_enabled_p = 1; | |
5556 | ||
0f71a2f6 JM |
5557 | target_preopen (from_tty); |
5558 | ||
5559 | unpush_target (&remote_cisco_ops); | |
5560 | ||
9db8d71f | 5561 | remote_desc = remote_serial_open (name); |
0f71a2f6 JM |
5562 | if (!remote_desc) |
5563 | perror_with_name (name); | |
5564 | ||
5565 | /* | |
5566 | * If a baud rate was specified on the gdb command line it will | |
5567 | * be greater than the initial value of -1. If it is, use it otherwise | |
5568 | * default to 9600 | |
5569 | */ | |
5570 | ||
5571 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
2cd58942 | 5572 | if (serial_setbaudrate (remote_desc, baud_rate)) |
0f71a2f6 | 5573 | { |
9b74d5d3 KB |
5574 | /* The requested speed could not be set. Error out to |
5575 | top level after closing remote_desc. Take care to | |
5576 | set remote_desc to NULL to avoid closing remote_desc | |
5577 | more than once. */ | |
2cd58942 | 5578 | serial_close (remote_desc); |
9b74d5d3 | 5579 | remote_desc = NULL; |
0f71a2f6 JM |
5580 | perror_with_name (name); |
5581 | } | |
5582 | ||
2cd58942 | 5583 | serial_raw (remote_desc); |
0f71a2f6 JM |
5584 | |
5585 | /* If there is something sitting in the buffer we might take it as a | |
5586 | response to a command, which would be bad. */ | |
2cd58942 | 5587 | serial_flush_input (remote_desc); |
0f71a2f6 JM |
5588 | |
5589 | if (from_tty) | |
5590 | { | |
5591 | puts_filtered ("Remote debugging using "); | |
5592 | puts_filtered (name); | |
5593 | puts_filtered ("\n"); | |
5594 | } | |
5595 | ||
5596 | remote_cisco_mode = 1; | |
5597 | ||
5598 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5599 | ||
d471ea57 | 5600 | init_all_packet_configs (); |
0f71a2f6 | 5601 | |
c5aa993b | 5602 | general_thread = -2; |
0f71a2f6 JM |
5603 | continue_thread = -2; |
5604 | ||
9d1f7ab2 MS |
5605 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5606 | use_threadinfo_query = 1; | |
5607 | use_threadextra_query = 1; | |
5608 | ||
0f71a2f6 JM |
5609 | /* Without this, some commands which require an active target (such |
5610 | as kill) won't work. This variable serves (at least) double duty | |
5611 | as both the pid of the target process (if it has such), and as a | |
5612 | flag indicating that a target is active. These functions should | |
5613 | be split out into seperate variables, especially since GDB will | |
5614 | someday have a notion of debugging several processes. */ | |
39f77062 | 5615 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
0f71a2f6 | 5616 | |
36918e70 | 5617 | /* Start the remote connection; if error, discard this target. See |
165b8e33 AC |
5618 | the comments in remote_open_1() for further details such as the |
5619 | need to re-throw the exception. */ | |
36918e70 AC |
5620 | ex = catch_exceptions (uiout, |
5621 | remote_start_remote_dummy, NULL, | |
5622 | "Couldn't establish connection to remote" | |
5623 | " target\n", | |
5624 | RETURN_MASK_ALL); | |
5625 | if (ex < 0) | |
0f71a2f6 JM |
5626 | { |
5627 | pop_target (); | |
165b8e33 | 5628 | throw_exception (ex); |
0f71a2f6 JM |
5629 | } |
5630 | } | |
5631 | ||
5632 | static void | |
c2d11a7d | 5633 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5634 | { |
5635 | remote_cisco_mode = 0; | |
5636 | remote_close (quitting); | |
5637 | } | |
5638 | ||
c5aa993b | 5639 | static void |
8ab86381 | 5640 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5641 | { |
5642 | remote_mourn_1 (&remote_cisco_ops); | |
5643 | } | |
5644 | ||
c5aa993b JM |
5645 | enum |
5646 | { | |
5647 | READ_MORE, | |
5648 | FATAL_ERROR, | |
5649 | ENTER_DEBUG, | |
0f71a2f6 | 5650 | DISCONNECT_TELNET |
c5aa993b JM |
5651 | } |
5652 | minitelnet_return; | |
0f71a2f6 | 5653 | |
1ff9c3d6 AC |
5654 | /* Shared between readsocket() and readtty(). The size is arbitrary, |
5655 | however all targets are known to support a 400 character packet. */ | |
5656 | static char tty_input[400]; | |
0f71a2f6 JM |
5657 | |
5658 | static int escape_count; | |
5659 | static int echo_check; | |
5660 | extern int quit_flag; | |
5661 | ||
5662 | static int | |
c2d11a7d | 5663 | readsocket (void) |
0f71a2f6 JM |
5664 | { |
5665 | int data; | |
5666 | ||
5667 | /* Loop until the socket doesn't have any more data */ | |
5668 | ||
c5aa993b | 5669 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5670 | { |
5671 | /* Check for the escape sequence */ | |
c5aa993b | 5672 | if (data == '|') |
0f71a2f6 JM |
5673 | { |
5674 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5675 | if (++escape_count == 4) |
0f71a2f6 JM |
5676 | { |
5677 | return ENTER_DEBUG; | |
5678 | } | |
c5aa993b JM |
5679 | else |
5680 | { /* This is a '|', but not the fourth in a row. | |
5681 | Continue without echoing it. If it isn't actually | |
5682 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5683 | continue; |
5684 | } | |
5685 | } | |
c5aa993b JM |
5686 | else |
5687 | /* Not a '|' */ | |
5688 | { | |
0f71a2f6 JM |
5689 | /* Ensure any pending '|'s are flushed. */ |
5690 | ||
c5aa993b JM |
5691 | for (; escape_count > 0; escape_count--) |
5692 | putchar ('|'); | |
0f71a2f6 | 5693 | } |
0f71a2f6 | 5694 | |
c5aa993b JM |
5695 | if (data == '\r') /* If this is a return character, */ |
5696 | continue; /* - just supress it. */ | |
5697 | ||
5698 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5699 | { |
5700 | if (tty_input[echo_check] == data) | |
5701 | { | |
1ff9c3d6 | 5702 | gdb_assert (echo_check <= sizeof (tty_input)); |
c5aa993b JM |
5703 | echo_check++; /* Character matched user input: */ |
5704 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5705 | } |
c5aa993b JM |
5706 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5707 | { /* End of the line (and of echo checking). */ | |
5708 | echo_check = -1; /* No more echo supression */ | |
5709 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5710 | } |
5711 | else | |
c5aa993b JM |
5712 | { /* Failed check for echo of user input. |
5713 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5714 | int j; |
5715 | ||
c5aa993b | 5716 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5717 | putchar (tty_input[j]); |
5718 | echo_check = -1; | |
5719 | } | |
5720 | } | |
c5aa993b | 5721 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5722 | } |
5723 | ||
c5aa993b JM |
5724 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5725 | return READ_MORE; /* Try to read some more */ | |
5726 | else | |
5727 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5728 | } |
5729 | ||
5730 | static int | |
c2d11a7d | 5731 | readtty (void) |
0f71a2f6 | 5732 | { |
0f71a2f6 JM |
5733 | int tty_bytecount; |
5734 | ||
5735 | /* First, read a buffer full from the terminal */ | |
5736 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5737 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5738 | { |
5739 | perror ("readtty: read failed"); | |
5740 | return FATAL_ERROR; | |
5741 | } | |
5742 | ||
5743 | /* Remove a quoted newline. */ | |
5744 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5745 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5746 | { | |
c5aa993b JM |
5747 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5748 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5749 | } |
5750 | ||
5751 | /* Turn trailing newlines into returns */ | |
5752 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5753 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5754 | |
5755 | /* If the line consists of a ~, enter debugging mode. */ | |
5756 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5757 | return ENTER_DEBUG; | |
5758 | ||
5759 | /* Make this a zero terminated string and write it out */ | |
5760 | tty_input[tty_bytecount] = 0; | |
2cd58942 | 5761 | if (serial_write (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5762 | { |
5763 | perror_with_name ("readtty: write failed"); | |
5764 | return FATAL_ERROR; | |
5765 | } | |
5766 | ||
5767 | return READ_MORE; | |
5768 | } | |
5769 | ||
5770 | static int | |
c2d11a7d | 5771 | minitelnet (void) |
0f71a2f6 JM |
5772 | { |
5773 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5774 | int tablesize; /* max number of FDs for select */ |
5775 | int status; | |
5776 | int quit_count = 0; | |
0f71a2f6 | 5777 | |
0f71a2f6 | 5778 | escape_count = 0; |
c5aa993b | 5779 | echo_check = -1; |
0f71a2f6 JM |
5780 | |
5781 | tablesize = 8 * sizeof (input); | |
5782 | ||
c5aa993b | 5783 | for (;;) |
0f71a2f6 JM |
5784 | { |
5785 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5786 | this must be done *before* the select as there may be |
5787 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5788 | |
c5aa993b | 5789 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5790 | { |
5791 | error ("Debugging terminated by communications error"); | |
5792 | } | |
c5aa993b | 5793 | else if (status != READ_MORE) |
0f71a2f6 JM |
5794 | { |
5795 | return (status); | |
5796 | } | |
5797 | ||
c5aa993b | 5798 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5799 | |
5800 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5801 | |
0f71a2f6 | 5802 | FD_ZERO (&input); |
c5aa993b | 5803 | FD_SET (fileno (stdin), &input); |
2cd58942 | 5804 | FD_SET (deprecated_serial_fd (remote_desc), &input); |
0f71a2f6 JM |
5805 | |
5806 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5807 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5808 | { |
5809 | error ("Communications error on select %d", errno); | |
5810 | } | |
5811 | ||
5812 | /* Handle Control-C typed */ | |
5813 | ||
c5aa993b | 5814 | if (quit_flag) |
0f71a2f6 JM |
5815 | { |
5816 | if ((++quit_count) == 2) | |
5817 | { | |
5818 | if (query ("Interrupt GDB? ")) | |
5819 | { | |
5820 | printf_filtered ("Interrupted by user.\n"); | |
b5a2688f | 5821 | throw_exception (RETURN_QUIT); |
0f71a2f6 JM |
5822 | } |
5823 | quit_count = 0; | |
5824 | } | |
5825 | quit_flag = 0; | |
5826 | ||
5827 | if (remote_break) | |
2cd58942 | 5828 | serial_send_break (remote_desc); |
0f71a2f6 | 5829 | else |
2cd58942 | 5830 | serial_write (remote_desc, "\003", 1); |
0f71a2f6 JM |
5831 | |
5832 | continue; | |
5833 | } | |
5834 | ||
5835 | /* Handle console input */ | |
5836 | ||
c5aa993b | 5837 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5838 | { |
5839 | quit_count = 0; | |
5840 | echo_check = 0; | |
5841 | status = readtty (); | |
5842 | if (status == READ_MORE) | |
5843 | continue; | |
5844 | ||
5845 | return status; /* telnet session ended */ | |
5846 | } | |
5847 | } | |
5848 | } | |
5849 | ||
39f77062 KB |
5850 | static ptid_t |
5851 | remote_cisco_wait (ptid_t ptid, struct target_waitstatus *status) | |
0f71a2f6 | 5852 | { |
c5aa993b | 5853 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5854 | { |
5855 | error ("Debugging session terminated by protocol error"); | |
5856 | } | |
5857 | putpkt ("?"); | |
39f77062 | 5858 | return remote_wait (ptid, status); |
0f71a2f6 JM |
5859 | } |
5860 | ||
5861 | static void | |
fba45db2 | 5862 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5863 | { |
5864 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5865 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5866 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5867 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5868 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5869 | remote_cisco_ops.to_open = remote_cisco_open; |
5870 | remote_cisco_ops.to_close = remote_cisco_close; | |
5871 | remote_cisco_ops.to_detach = remote_detach; | |
6ad8ae5c | 5872 | remote_cisco_ops.to_disconnect = remote_disconnect; |
c5aa993b JM |
5873 | remote_cisco_ops.to_resume = remote_resume; |
5874 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5875 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5876 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5877 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5878 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5879 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 | 5880 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
3c3bea1c GS |
5881 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; |
5882 | remote_cisco_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5883 | remote_cisco_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5884 | remote_cisco_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5885 | remote_cisco_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5886 | remote_cisco_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5887 | remote_cisco_ops.to_stopped_data_address = remote_stopped_data_address; | |
5888 | remote_cisco_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
c5aa993b JM |
5889 | remote_cisco_ops.to_kill = remote_kill; |
5890 | remote_cisco_ops.to_load = generic_load; | |
5891 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5892 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5893 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5894 | remote_cisco_ops.to_pid_to_str = remote_pid_to_str; |
5895 | remote_cisco_ops.to_extra_thread_info = remote_threads_extra_info; | |
c5aa993b JM |
5896 | remote_cisco_ops.to_stratum = process_stratum; |
5897 | remote_cisco_ops.to_has_all_memory = 1; | |
5898 | remote_cisco_ops.to_has_memory = 1; | |
5899 | remote_cisco_ops.to_has_stack = 1; | |
5900 | remote_cisco_ops.to_has_registers = 1; | |
5901 | remote_cisco_ops.to_has_execution = 1; | |
5902 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5903 | } |
5904 | ||
6426a772 JM |
5905 | static int |
5906 | remote_can_async_p (void) | |
5907 | { | |
5908 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5909 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5910 | } |
5911 | ||
5912 | static int | |
5913 | remote_is_async_p (void) | |
5914 | { | |
5915 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5916 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5917 | } |
5918 | ||
2acceee2 JM |
5919 | /* Pass the SERIAL event on and up to the client. One day this code |
5920 | will be able to delay notifying the client of an event until the | |
5921 | point where an entire packet has been received. */ | |
5922 | ||
5923 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5924 | static void *async_client_context; | |
5925 | static serial_event_ftype remote_async_serial_handler; | |
5926 | ||
6426a772 | 5927 | static void |
819cc324 | 5928 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5929 | { |
2acceee2 JM |
5930 | /* Don't propogate error information up to the client. Instead let |
5931 | the client find out about the error by querying the target. */ | |
5932 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5933 | } | |
5934 | ||
5935 | static void | |
5936 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5937 | { | |
ed9a39eb | 5938 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5939 | internal_error (__FILE__, __LINE__, |
5940 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5941 | |
2acceee2 JM |
5942 | if (callback != NULL) |
5943 | { | |
2cd58942 | 5944 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5945 | async_client_callback = callback; |
5946 | async_client_context = context; | |
5947 | } | |
5948 | else | |
2cd58942 | 5949 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5950 | } |
5951 | ||
43ff13b4 JM |
5952 | /* Target async and target extended-async. |
5953 | ||
5954 | This are temporary targets, until it is all tested. Eventually | |
5955 | async support will be incorporated int the usual 'remote' | |
5956 | target. */ | |
5957 | ||
5958 | static void | |
c2d11a7d | 5959 | init_remote_async_ops (void) |
43ff13b4 JM |
5960 | { |
5961 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5962 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5963 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5964 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5965 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5966 | remote_async_ops.to_open = remote_async_open; |
5967 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5968 | remote_async_ops.to_detach = remote_detach; |
5969 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5970 | remote_async_ops.to_resume = remote_async_resume; |
5971 | remote_async_ops.to_wait = remote_async_wait; | |
5972 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5973 | remote_async_ops.to_store_registers = remote_store_registers; | |
5974 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5975 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5976 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5977 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5978 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5979 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5980 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5981 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5982 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5983 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5984 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5985 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5986 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5987 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5988 | remote_async_ops.to_kill = remote_async_kill; |
5989 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5990 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5991 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5992 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5993 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5994 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5995 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5996 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5997 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5998 | remote_async_ops.to_stratum = process_stratum; |
5999 | remote_async_ops.to_has_all_memory = 1; | |
6000 | remote_async_ops.to_has_memory = 1; | |
6001 | remote_async_ops.to_has_stack = 1; | |
6002 | remote_async_ops.to_has_registers = 1; | |
6003 | remote_async_ops.to_has_execution = 1; | |
6004 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
6005 | remote_async_ops.to_can_async_p = remote_can_async_p; |
6006 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
6007 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 6008 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 6009 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
6010 | } |
6011 | ||
6012 | /* Set up the async extended remote vector by making a copy of the standard | |
6013 | remote vector and adding to it. */ | |
6014 | ||
6015 | static void | |
c2d11a7d | 6016 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
6017 | { |
6018 | extended_async_remote_ops = remote_async_ops; | |
6019 | ||
6020 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 6021 | extended_async_remote_ops.to_longname = |
43ff13b4 | 6022 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 6023 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
6024 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
6025 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6026 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
6027 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6028 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6029 | } | |
6030 | ||
5a2468f5 | 6031 | static void |
c2d11a7d | 6032 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6033 | { |
5a2468f5 JM |
6034 | } |
6035 | ||
d471ea57 AC |
6036 | static void |
6037 | show_remote_cmd (char *args, int from_tty) | |
6038 | { | |
e9e68a56 AC |
6039 | /* FIXME: cagney/2002-06-15: This function should iterate over |
6040 | remote_show_cmdlist for a list of sub commands to show. */ | |
6041 | show_remote_protocol_Z_packet_cmd (args, from_tty, NULL); | |
6042 | show_remote_protocol_e_packet_cmd (args, from_tty, NULL); | |
6043 | show_remote_protocol_E_packet_cmd (args, from_tty, NULL); | |
6044 | show_remote_protocol_P_packet_cmd (args, from_tty, NULL); | |
6045 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty, NULL); | |
506fb367 | 6046 | show_remote_protocol_vcont_packet_cmd (args, from_tty, NULL); |
e9e68a56 | 6047 | show_remote_protocol_binary_download_cmd (args, from_tty, NULL); |
d471ea57 | 6048 | } |
5a2468f5 | 6049 | |
0f71a2f6 | 6050 | static void |
fba45db2 | 6051 | build_remote_gdbarch_data (void) |
0f71a2f6 | 6052 | { |
d696208f | 6053 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
6054 | } |
6055 | ||
dc8acb97 MS |
6056 | /* Saved pointer to previous owner of the new_objfile event. */ |
6057 | static void (*remote_new_objfile_chain) (struct objfile *); | |
6058 | ||
6059 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
6060 | static void | |
6061 | remote_new_objfile (struct objfile *objfile) | |
6062 | { | |
6063 | if (remote_desc != 0) /* Have a remote connection */ | |
6064 | { | |
6065 | remote_check_symbols (objfile); | |
6066 | } | |
6067 | /* Call predecessor on chain, if any. */ | |
6068 | if (remote_new_objfile_chain != 0 && | |
6069 | remote_desc == 0) | |
6070 | remote_new_objfile_chain (objfile); | |
6071 | } | |
6072 | ||
c906108c | 6073 | void |
fba45db2 | 6074 | _initialize_remote (void) |
c906108c | 6075 | { |
5a2468f5 JM |
6076 | static struct cmd_list_element *remote_set_cmdlist; |
6077 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 6078 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 6079 | |
0f71a2f6 | 6080 | /* architecture specific data */ |
fcc1c85c | 6081 | remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state); |
d01949b6 AC |
6082 | |
6083 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
6084 | that the remote protocol has been initialized. */ | |
11cf8741 JM |
6085 | register_gdbarch_swap (&remote_address_size, |
6086 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
6087 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
6088 | ||
c906108c SS |
6089 | init_remote_ops (); |
6090 | add_target (&remote_ops); | |
6091 | ||
6092 | init_extended_remote_ops (); | |
6093 | add_target (&extended_remote_ops); | |
cce74817 | 6094 | |
43ff13b4 JM |
6095 | init_remote_async_ops (); |
6096 | add_target (&remote_async_ops); | |
6097 | ||
6098 | init_extended_async_remote_ops (); | |
6099 | add_target (&extended_async_remote_ops); | |
6100 | ||
0f71a2f6 JM |
6101 | init_remote_cisco_ops (); |
6102 | add_target (&remote_cisco_ops); | |
6103 | ||
dc8acb97 MS |
6104 | /* Hook into new objfile notification. */ |
6105 | remote_new_objfile_chain = target_new_objfile_hook; | |
6106 | target_new_objfile_hook = remote_new_objfile; | |
6107 | ||
c906108c SS |
6108 | #if 0 |
6109 | init_remote_threadtests (); | |
6110 | #endif | |
6111 | ||
d471ea57 AC |
6112 | /* set/show remote ... */ |
6113 | ||
5a2468f5 JM |
6114 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
6115 | Remote protocol specific variables\n\ | |
6116 | Configure various remote-protocol specific variables such as\n\ | |
6117 | the packets being used", | |
cff3e48b | 6118 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 6119 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 6120 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
6121 | Remote protocol specific variables\n\ |
6122 | Configure various remote-protocol specific variables such as\n\ | |
6123 | the packets being used", | |
cff3e48b | 6124 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
6125 | 0/*allow-unknown*/, &showlist); |
6126 | ||
c5aa993b | 6127 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 6128 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 6129 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
6130 | &cmdlist); |
6131 | ||
6132 | add_cmd ("packet", class_maintenance, packet_command, | |
6133 | "Send an arbitrary packet to a remote target.\n\ | |
6134 | maintenance packet TEXT\n\ | |
6135 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6136 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6137 | response packet. GDB supplies the initial `$' character, and the\n\ | |
6138 | terminating `#' character and checksum.", | |
6139 | &maintenancelist); | |
6140 | ||
e707bbc2 AC |
6141 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, |
6142 | "Set whether to send break if interrupted.\n", | |
6143 | "Show whether to send break if interrupted.\n", | |
6144 | NULL, NULL, | |
6145 | &setlist, &showlist); | |
c906108c | 6146 | |
11cf8741 JM |
6147 | /* Install commands for configuring memory read/write packets. */ |
6148 | ||
6149 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
6150 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
6151 | &setlist); | |
4ad5b0f7 | 6152 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
6153 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
6154 | &showlist); | |
6155 | add_cmd ("memory-write-packet-size", no_class, | |
6156 | set_memory_write_packet_size, | |
6157 | "Set the maximum number of bytes per memory-write packet.\n" | |
6158 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6159 | "default packet size. The actual limit is further reduced\n" | |
6160 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6161 | "further restriction and ``limit'' to enable that restriction\n", | |
6162 | &remote_set_cmdlist); | |
6163 | add_cmd ("memory-read-packet-size", no_class, | |
6164 | set_memory_read_packet_size, | |
6165 | "Set the maximum number of bytes per memory-read packet.\n" | |
6166 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
6167 | "default packet size. The actual limit is further reduced\n" | |
6168 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
6169 | "further restriction and ``limit'' to enable that restriction\n", | |
6170 | &remote_set_cmdlist); | |
6171 | add_cmd ("memory-write-packet-size", no_class, | |
6172 | show_memory_write_packet_size, | |
6173 | "Show the maximum number of bytes per memory-write packet.\n", | |
6174 | &remote_show_cmdlist); | |
6175 | add_cmd ("memory-read-packet-size", no_class, | |
6176 | show_memory_read_packet_size, | |
6177 | "Show the maximum number of bytes per memory-read packet.\n", | |
6178 | &remote_show_cmdlist); | |
c906108c | 6179 | |
501eef12 AC |
6180 | add_setshow_cmd ("hardware-watchpoint-limit", no_class, |
6181 | var_zinteger, &remote_hw_watchpoint_limit, "\ | |
6182 | Set the maximum number of target hardware watchpoints.\n\ | |
6183 | Specify a negative limit for unlimited.", "\ | |
6184 | Show the maximum number of target hardware watchpoints.\n", | |
6185 | NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist); | |
6186 | add_setshow_cmd ("hardware-breakpoint-limit", no_class, | |
6187 | var_zinteger, &remote_hw_breakpoint_limit, "\ | |
6188 | Set the maximum number of target hardware breakpoints.\n\ | |
6189 | Specify a negative limit for unlimited.", "\ | |
6190 | Show the maximum number of target hardware breakpoints.\n", | |
6191 | NULL, NULL, &remote_set_cmdlist, &remote_show_cmdlist); | |
6192 | ||
c5aa993b | 6193 | add_show_from_set |
c906108c | 6194 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 6195 | var_integer, (char *) &remote_address_size, |
c906108c SS |
6196 | "Set the maximum size of the address (in bits) \ |
6197 | in a memory packet.\n", | |
6198 | &setlist), | |
c5aa993b | 6199 | &showlist); |
c906108c | 6200 | |
96baa820 JM |
6201 | add_packet_config_cmd (&remote_protocol_binary_download, |
6202 | "X", "binary-download", | |
6203 | set_remote_protocol_binary_download_cmd, | |
6204 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
6205 | &remote_set_cmdlist, &remote_show_cmdlist, |
6206 | 1); | |
96baa820 JM |
6207 | #if 0 |
6208 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
6209 | compatibility. */ | |
c5aa993b | 6210 | add_show_from_set |
b83266a0 SS |
6211 | (add_set_cmd ("remotebinarydownload", no_class, |
6212 | var_boolean, (char *) &remote_binary_download, | |
6213 | "Set binary downloads.\n", &setlist), | |
6214 | &showlist); | |
96baa820 | 6215 | #endif |
0f71a2f6 JM |
6216 | |
6217 | add_info ("remote-process", remote_info_process, | |
6218 | "Query the remote system for process info."); | |
6219 | ||
506fb367 DJ |
6220 | add_packet_config_cmd (&remote_protocol_vcont, |
6221 | "vCont", "verbose-resume", | |
6222 | set_remote_protocol_vcont_packet_cmd, | |
6223 | show_remote_protocol_vcont_packet_cmd, | |
6224 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6225 | 0); | |
6226 | ||
dc8acb97 MS |
6227 | add_packet_config_cmd (&remote_protocol_qSymbol, |
6228 | "qSymbol", "symbol-lookup", | |
6229 | set_remote_protocol_qSymbol_packet_cmd, | |
6230 | show_remote_protocol_qSymbol_packet_cmd, | |
6231 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6232 | 0); | |
6233 | ||
44eaed12 C |
6234 | add_packet_config_cmd (&remote_protocol_e, |
6235 | "e", "step-over-range", | |
6236 | set_remote_protocol_e_packet_cmd, | |
6237 | show_remote_protocol_e_packet_cmd, | |
6238 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6239 | 0); | |
0f017ab9 AC |
6240 | /* Disable by default. The ``e'' packet has nasty interactions with |
6241 | the threading code - it relies on global state. */ | |
7f19b9a2 | 6242 | remote_protocol_e.detect = AUTO_BOOLEAN_FALSE; |
0f017ab9 | 6243 | update_packet_config (&remote_protocol_e); |
44eaed12 C |
6244 | |
6245 | add_packet_config_cmd (&remote_protocol_E, | |
6246 | "E", "step-over-range-w-signal", | |
6247 | set_remote_protocol_E_packet_cmd, | |
6248 | show_remote_protocol_E_packet_cmd, | |
6249 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6250 | 0); | |
0f017ab9 AC |
6251 | /* Disable by default. The ``e'' packet has nasty interactions with |
6252 | the threading code - it relies on global state. */ | |
7f19b9a2 | 6253 | remote_protocol_E.detect = AUTO_BOOLEAN_FALSE; |
0f017ab9 | 6254 | update_packet_config (&remote_protocol_E); |
44eaed12 | 6255 | |
d471ea57 AC |
6256 | add_packet_config_cmd (&remote_protocol_P, |
6257 | "P", "set-register", | |
5a2468f5 JM |
6258 | set_remote_protocol_P_packet_cmd, |
6259 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
6260 | &remote_set_cmdlist, &remote_show_cmdlist, |
6261 | 1); | |
6262 | ||
6263 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
6264 | "Z0", "software-breakpoint", | |
6265 | set_remote_protocol_Z_software_bp_packet_cmd, | |
6266 | show_remote_protocol_Z_software_bp_packet_cmd, | |
6267 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6268 | 0); | |
6269 | ||
6270 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
6271 | "Z1", "hardware-breakpoint", | |
6272 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
6273 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
6274 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6275 | 0); | |
6276 | ||
6277 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
6278 | "Z2", "write-watchpoint", | |
6279 | set_remote_protocol_Z_write_wp_packet_cmd, | |
6280 | show_remote_protocol_Z_write_wp_packet_cmd, | |
6281 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6282 | 0); | |
6283 | ||
6284 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
6285 | "Z3", "read-watchpoint", | |
6286 | set_remote_protocol_Z_read_wp_packet_cmd, | |
6287 | show_remote_protocol_Z_read_wp_packet_cmd, | |
6288 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6289 | 0); | |
6290 | ||
6291 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
6292 | "Z4", "access-watchpoint", | |
6293 | set_remote_protocol_Z_access_wp_packet_cmd, | |
6294 | show_remote_protocol_Z_access_wp_packet_cmd, | |
6295 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6296 | 0); | |
6297 | ||
6298 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
e9e68a56 AC |
6299 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
6300 | &remote_Z_packet_detect, "\ | |
6301 | Set use of remote protocol `Z' packets", | |
6302 | "Show use of remote protocol `Z' packets ", | |
6303 | set_remote_protocol_Z_packet_cmd, | |
6304 | show_remote_protocol_Z_packet_cmd, | |
6305 | &remote_set_cmdlist, &remote_show_cmdlist); | |
449092f6 CV |
6306 | |
6307 | /* Eventually initialize fileio. See fileio.c */ | |
6308 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 6309 | } |