Commit | Line | Data |
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c906108c SS |
1 | /* Memory-access and commands for remote VxWorks processes, for GDB. |
2 | Copyright (C) 1990-95, 1997-98, 1999 Free Software Foundation, Inc. | |
3 | Contributed by Wind River Systems and Cygnus Support. | |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "frame.h" | |
24 | #include "inferior.h" | |
03f2053f | 25 | #include "gdb_wait.h" |
c906108c SS |
26 | #include "target.h" |
27 | #include "gdbcore.h" | |
28 | #include "command.h" | |
29 | #include "symtab.h" | |
30 | #include "complaints.h" | |
31 | #include "gdbcmd.h" | |
c5aa993b JM |
32 | #include "bfd.h" /* Required by objfiles.h. */ |
33 | #include "symfile.h" /* Required by objfiles.h. */ | |
c906108c SS |
34 | #include "objfiles.h" |
35 | #include "gdb-stabs.h" | |
36 | ||
37 | #include "gdb_string.h" | |
38 | #include <errno.h> | |
39 | #include <signal.h> | |
40 | #include <fcntl.h> | |
41 | #include <sys/types.h> | |
42 | #include <sys/socket.h> | |
43 | #define malloc bogon_malloc /* Sun claims "char *malloc()" not void * */ | |
44 | #define free bogon_free /* Sun claims "int free()" not void */ | |
45 | #define realloc bogon_realloc /* Sun claims "char *realloc()", not void * */ | |
46 | #include <rpc/rpc.h> | |
47 | #undef malloc | |
48 | #undef free | |
49 | #undef realloc | |
50 | #include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */ | |
51 | #include <netdb.h> | |
52 | #include "vx-share/ptrace.h" | |
53 | #include "vx-share/xdr_ptrace.h" | |
54 | #include "vx-share/xdr_ld.h" | |
55 | #include "vx-share/xdr_rdb.h" | |
56 | #include "vx-share/dbgRpcLib.h" | |
57 | ||
58 | #include <symtab.h> | |
59 | ||
60 | /* Maximum number of bytes to transfer in a single | |
61 | PTRACE_{READ,WRITE}DATA request. */ | |
62 | #define VX_MEMXFER_MAX 4096 | |
63 | ||
64 | extern void vx_read_register (); | |
65 | extern void vx_write_register (); | |
66 | extern void symbol_file_command (); | |
c5aa993b | 67 | extern int stop_soon_quietly; /* for wait_for_inferior */ |
c906108c SS |
68 | |
69 | static int net_step (); | |
70 | static int net_ptrace_clnt_call (); /* Forward decl */ | |
c5aa993b | 71 | static enum clnt_stat net_clnt_call (); /* Forward decl */ |
c906108c SS |
72 | |
73 | /* Target ops structure for accessing memory and such over the net */ | |
74 | ||
75 | static struct target_ops vx_ops; | |
76 | ||
77 | /* Target ops structure for accessing VxWorks child processes over the net */ | |
78 | ||
79 | static struct target_ops vx_run_ops; | |
80 | ||
81 | /* Saved name of target host and called function for "info files". | |
82 | Both malloc'd. */ | |
83 | ||
84 | static char *vx_host; | |
c5aa993b | 85 | static char *vx_running; /* Called function */ |
c906108c SS |
86 | |
87 | /* Nonzero means target that is being debugged remotely has a floating | |
88 | point processor. */ | |
89 | ||
90 | int target_has_fp; | |
91 | ||
92 | /* Default error message when the network is forking up. */ | |
93 | ||
94 | static const char rpcerr[] = "network target debugging: rpc error"; | |
95 | ||
c5aa993b | 96 | CLIENT *pClient; /* client used in net debugging */ |
c906108c SS |
97 | static int ptraceSock = RPC_ANYSOCK; |
98 | ||
c5aa993b | 99 | enum clnt_stat net_clnt_call (); |
c906108c SS |
100 | static void parse_args (); |
101 | ||
c5aa993b JM |
102 | static struct timeval rpcTimeout = |
103 | {10, 0}; | |
c906108c SS |
104 | |
105 | static char *skip_white_space (); | |
106 | static char *find_white_space (); | |
c5aa993b | 107 | |
c906108c SS |
108 | /* Tell the VxWorks target system to download a file. |
109 | The load addresses of the text, data, and bss segments are | |
110 | stored in *pTextAddr, *pDataAddr, and *pBssAddr (respectively). | |
111 | Returns 0 for success, -1 for failure. */ | |
112 | ||
113 | static int | |
fba45db2 KB |
114 | net_load (char *filename, CORE_ADDR *pTextAddr, CORE_ADDR *pDataAddr, |
115 | CORE_ADDR *pBssAddr) | |
c906108c SS |
116 | { |
117 | enum clnt_stat status; | |
118 | struct ldfile ldstruct; | |
119 | struct timeval load_timeout; | |
120 | ||
121 | memset ((char *) &ldstruct, '\0', sizeof (ldstruct)); | |
122 | ||
123 | /* We invoke clnt_call () here directly, instead of through | |
124 | net_clnt_call (), because we need to set a large timeout value. | |
125 | The load on the target side can take quite a while, easily | |
126 | more than 10 seconds. The user can kill this call by typing | |
127 | CTRL-C if there really is a problem with the load. | |
128 | ||
129 | Do not change the tv_sec value without checking -- select() imposes | |
130 | a limit of 10**8 on it for no good reason that I can see... */ | |
131 | ||
c5aa993b | 132 | load_timeout.tv_sec = 99999999; /* A large number, effectively inf. */ |
c906108c | 133 | load_timeout.tv_usec = 0; |
c5aa993b | 134 | |
c906108c SS |
135 | status = clnt_call (pClient, VX_LOAD, xdr_wrapstring, &filename, xdr_ldfile, |
136 | &ldstruct, load_timeout); | |
137 | ||
138 | if (status == RPC_SUCCESS) | |
139 | { | |
140 | if (*ldstruct.name == 0) /* load failed on VxWorks side */ | |
141 | return -1; | |
142 | *pTextAddr = ldstruct.txt_addr; | |
143 | *pDataAddr = ldstruct.data_addr; | |
144 | *pBssAddr = ldstruct.bss_addr; | |
145 | return 0; | |
146 | } | |
147 | else | |
148 | return -1; | |
149 | } | |
150 | ||
151 | /* returns 0 if successful, errno if RPC failed or VxWorks complains. */ | |
152 | ||
153 | static int | |
fba45db2 | 154 | net_break (int addr, u_long procnum) |
c906108c SS |
155 | { |
156 | enum clnt_stat status; | |
157 | int break_status; | |
c5aa993b JM |
158 | Rptrace ptrace_in; /* XXX This is stupid. It doesn't need to be a ptrace |
159 | structure. How about something smaller? */ | |
c906108c SS |
160 | |
161 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); | |
162 | break_status = 0; | |
163 | ||
164 | ptrace_in.addr = addr; | |
165 | ptrace_in.pid = inferior_pid; | |
166 | ||
167 | status = net_clnt_call (procnum, xdr_rptrace, &ptrace_in, xdr_int, | |
168 | &break_status); | |
169 | ||
170 | if (status != RPC_SUCCESS) | |
c5aa993b | 171 | return errno; |
c906108c SS |
172 | |
173 | if (break_status == -1) | |
174 | return ENOMEM; | |
c5aa993b | 175 | return break_status; /* probably (FIXME) zero */ |
c906108c SS |
176 | } |
177 | ||
178 | /* returns 0 if successful, errno otherwise */ | |
179 | ||
180 | static int | |
fba45db2 | 181 | vx_insert_breakpoint (int addr) |
c906108c SS |
182 | { |
183 | return net_break (addr, VX_BREAK_ADD); | |
184 | } | |
185 | ||
186 | /* returns 0 if successful, errno otherwise */ | |
187 | ||
188 | static int | |
fba45db2 | 189 | vx_remove_breakpoint (int addr) |
c906108c SS |
190 | { |
191 | return net_break (addr, VX_BREAK_DELETE); | |
192 | } | |
193 | ||
194 | /* Start an inferior process and sets inferior_pid to its pid. | |
195 | EXEC_FILE is the file to run. | |
196 | ALLARGS is a string containing the arguments to the program. | |
197 | ENV is the environment vector to pass. | |
198 | Returns process id. Errors reported with error(). | |
199 | On VxWorks, we ignore exec_file. */ | |
c5aa993b | 200 | |
c906108c | 201 | static void |
fba45db2 | 202 | vx_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
203 | { |
204 | enum clnt_stat status; | |
205 | arg_array passArgs; | |
206 | TASK_START taskStart; | |
207 | ||
208 | memset ((char *) &passArgs, '\0', sizeof (passArgs)); | |
209 | memset ((char *) &taskStart, '\0', sizeof (taskStart)); | |
210 | ||
211 | /* parse arguments, put them in passArgs */ | |
212 | ||
213 | parse_args (args, &passArgs); | |
214 | ||
215 | if (passArgs.arg_array_len == 0) | |
216 | error ("You must specify a function name to run, and arguments if any"); | |
217 | ||
218 | status = net_clnt_call (PROCESS_START, xdr_arg_array, &passArgs, | |
219 | xdr_TASK_START, &taskStart); | |
220 | ||
221 | if ((status != RPC_SUCCESS) || (taskStart.status == -1)) | |
222 | error ("Can't create process on remote target machine"); | |
223 | ||
224 | /* Save the name of the running function */ | |
225 | vx_running = savestring (passArgs.arg_array_val[0], | |
226 | strlen (passArgs.arg_array_val[0])); | |
227 | ||
228 | push_target (&vx_run_ops); | |
229 | inferior_pid = taskStart.pid; | |
230 | ||
231 | /* We will get a trace trap after one instruction. | |
232 | Insert breakpoints and continue. */ | |
233 | ||
234 | init_wait_for_inferior (); | |
235 | ||
236 | /* Set up the "saved terminal modes" of the inferior | |
237 | based on what modes we are starting it with. */ | |
238 | target_terminal_init (); | |
239 | ||
240 | /* Install inferior's terminal modes. */ | |
241 | target_terminal_inferior (); | |
242 | ||
243 | stop_soon_quietly = 1; | |
244 | wait_for_inferior (); /* Get the task spawn event */ | |
245 | stop_soon_quietly = 0; | |
246 | ||
247 | /* insert_step_breakpoint (); FIXME, do we need this? */ | |
248 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); | |
249 | } | |
250 | ||
251 | /* Fill ARGSTRUCT in argc/argv form with the arguments from the | |
252 | argument string ARGSTRING. */ | |
253 | ||
254 | static void | |
fba45db2 | 255 | parse_args (register char *arg_string, arg_array *arg_struct) |
c906108c SS |
256 | { |
257 | register int arg_count = 0; /* number of arguments */ | |
258 | register int arg_index = 0; | |
259 | register char *p0; | |
c5aa993b | 260 | |
c906108c | 261 | memset ((char *) arg_struct, '\0', sizeof (arg_array)); |
c5aa993b | 262 | |
c906108c SS |
263 | /* first count how many arguments there are */ |
264 | ||
265 | p0 = arg_string; | |
266 | while (*p0 != '\0') | |
267 | { | |
268 | if (*(p0 = skip_white_space (p0)) == '\0') | |
269 | break; | |
270 | p0 = find_white_space (p0); | |
271 | arg_count++; | |
272 | } | |
273 | ||
274 | arg_struct->arg_array_len = arg_count; | |
275 | arg_struct->arg_array_val = (char **) xmalloc ((arg_count + 1) | |
276 | * sizeof (char *)); | |
277 | ||
278 | /* now copy argument strings into arg_struct. */ | |
279 | ||
280 | while (*(arg_string = skip_white_space (arg_string))) | |
281 | { | |
282 | p0 = find_white_space (arg_string); | |
283 | arg_struct->arg_array_val[arg_index++] = savestring (arg_string, | |
284 | p0 - arg_string); | |
285 | arg_string = p0; | |
286 | } | |
287 | ||
288 | arg_struct->arg_array_val[arg_count] = NULL; | |
289 | } | |
290 | ||
291 | /* Advance a string pointer across whitespace and return a pointer | |
292 | to the first non-white character. */ | |
293 | ||
294 | static char * | |
fba45db2 | 295 | skip_white_space (register char *p) |
c906108c SS |
296 | { |
297 | while (*p == ' ' || *p == '\t') | |
298 | p++; | |
299 | return p; | |
300 | } | |
c5aa993b | 301 | |
c906108c SS |
302 | /* Search for the first unquoted whitespace character in a string. |
303 | Returns a pointer to the character, or to the null terminator | |
304 | if no whitespace is found. */ | |
305 | ||
306 | static char * | |
fba45db2 | 307 | find_white_space (register char *p) |
c906108c SS |
308 | { |
309 | register int c; | |
310 | ||
311 | while ((c = *p) != ' ' && c != '\t' && c) | |
312 | { | |
313 | if (c == '\'' || c == '"') | |
314 | { | |
315 | while (*++p != c && *p) | |
316 | { | |
317 | if (*p == '\\') | |
318 | p++; | |
319 | } | |
320 | if (!*p) | |
321 | break; | |
322 | } | |
323 | p++; | |
324 | } | |
325 | return p; | |
326 | } | |
c5aa993b | 327 | |
c906108c SS |
328 | /* Poll the VxWorks target system for an event related |
329 | to the debugged task. | |
330 | Returns -1 if remote wait failed, task status otherwise. */ | |
331 | ||
332 | static int | |
fba45db2 | 333 | net_wait (RDB_EVENT *pEvent) |
c906108c | 334 | { |
c5aa993b JM |
335 | int pid; |
336 | enum clnt_stat status; | |
c906108c | 337 | |
c5aa993b | 338 | memset ((char *) pEvent, '\0', sizeof (RDB_EVENT)); |
c906108c | 339 | |
c5aa993b JM |
340 | pid = inferior_pid; |
341 | status = net_clnt_call (PROCESS_WAIT, xdr_int, &pid, xdr_RDB_EVENT, | |
342 | pEvent); | |
343 | ||
344 | /* return (status == RPC_SUCCESS)? pEvent->status: -1; */ | |
345 | if (status == RPC_SUCCESS) | |
346 | return ((pEvent->status) ? 1 : 0); | |
347 | else if (status == RPC_TIMEDOUT) | |
348 | return (1); | |
349 | else | |
350 | return (-1); | |
c906108c | 351 | } |
c5aa993b | 352 | |
c906108c SS |
353 | /* Suspend the remote task. |
354 | Returns -1 if suspend fails on target system, 0 otherwise. */ | |
355 | ||
356 | static int | |
fba45db2 | 357 | net_quit (void) |
c906108c SS |
358 | { |
359 | int pid; | |
360 | int quit_status; | |
361 | enum clnt_stat status; | |
362 | ||
363 | quit_status = 0; | |
364 | ||
365 | /* don't let rdbTask suspend itself by passing a pid of 0 */ | |
366 | ||
367 | if ((pid = inferior_pid) == 0) | |
368 | return -1; | |
369 | ||
370 | status = net_clnt_call (VX_TASK_SUSPEND, xdr_int, &pid, xdr_int, | |
371 | &quit_status); | |
372 | ||
c5aa993b | 373 | return (status == RPC_SUCCESS) ? quit_status : -1; |
c906108c SS |
374 | } |
375 | ||
376 | /* Read a register or registers from the remote system. */ | |
377 | ||
378 | void | |
fba45db2 | 379 | net_read_registers (char *reg_buf, int len, u_long procnum) |
c906108c SS |
380 | { |
381 | int status; | |
382 | Rptrace ptrace_in; | |
383 | Ptrace_return ptrace_out; | |
384 | C_bytes out_data; | |
385 | char message[100]; | |
386 | ||
387 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); | |
388 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); | |
389 | ||
390 | /* Initialize RPC input argument structure. */ | |
391 | ||
392 | ptrace_in.pid = inferior_pid; | |
393 | ptrace_in.info.ttype = NOINFO; | |
394 | ||
395 | /* Initialize RPC return value structure. */ | |
396 | ||
397 | out_data.bytes = reg_buf; | |
398 | out_data.len = len; | |
c5aa993b | 399 | ptrace_out.info.more_data = (caddr_t) & out_data; |
c906108c SS |
400 | |
401 | /* Call RPC; take an error exit if appropriate. */ | |
402 | ||
403 | status = net_ptrace_clnt_call (procnum, &ptrace_in, &ptrace_out); | |
404 | if (status) | |
405 | error (rpcerr); | |
406 | if (ptrace_out.status == -1) | |
407 | { | |
408 | errno = ptrace_out.errno_num; | |
409 | sprintf (message, "reading %s registers", (procnum == PTRACE_GETREGS) | |
c5aa993b JM |
410 | ? "general-purpose" |
411 | : "floating-point"); | |
c906108c SS |
412 | perror_with_name (message); |
413 | } | |
414 | } | |
415 | ||
416 | /* Write register values to a VxWorks target. REG_BUF points to a buffer | |
417 | containing the raw register values, LEN is the length of REG_BUF in | |
418 | bytes, and PROCNUM is the RPC procedure number (PTRACE_SETREGS or | |
419 | PTRACE_SETFPREGS). An error exit is taken if the RPC call fails or | |
420 | if an error status is returned by the remote debug server. This is | |
421 | a utility routine used by vx_write_register (). */ | |
422 | ||
423 | void | |
fba45db2 | 424 | net_write_registers (char *reg_buf, int len, u_long procnum) |
c906108c SS |
425 | { |
426 | int status; | |
427 | Rptrace ptrace_in; | |
428 | Ptrace_return ptrace_out; | |
429 | C_bytes in_data; | |
430 | char message[100]; | |
431 | ||
432 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); | |
433 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); | |
434 | ||
435 | /* Initialize RPC input argument structure. */ | |
436 | ||
437 | in_data.bytes = reg_buf; | |
438 | in_data.len = len; | |
439 | ||
440 | ptrace_in.pid = inferior_pid; | |
441 | ptrace_in.info.ttype = DATA; | |
c5aa993b | 442 | ptrace_in.info.more_data = (caddr_t) & in_data; |
c906108c SS |
443 | |
444 | /* Call RPC; take an error exit if appropriate. */ | |
445 | ||
446 | status = net_ptrace_clnt_call (procnum, &ptrace_in, &ptrace_out); | |
447 | if (status) | |
448 | error (rpcerr); | |
449 | if (ptrace_out.status == -1) | |
450 | { | |
451 | errno = ptrace_out.errno_num; | |
452 | sprintf (message, "writing %s registers", (procnum == PTRACE_SETREGS) | |
c5aa993b JM |
453 | ? "general-purpose" |
454 | : "floating-point"); | |
c906108c SS |
455 | perror_with_name (message); |
456 | } | |
457 | } | |
458 | ||
459 | /* Prepare to store registers. Since we will store all of them, | |
460 | read out their current values now. */ | |
461 | ||
462 | static void | |
fba45db2 | 463 | vx_prepare_to_store (void) |
c906108c SS |
464 | { |
465 | /* Fetch all registers, if any of them are not yet fetched. */ | |
466 | read_register_bytes (0, NULL, REGISTER_BYTES); | |
467 | } | |
468 | ||
469 | /* Copy LEN bytes to or from remote inferior's memory starting at MEMADDR | |
470 | to debugger memory starting at MYADDR. WRITE is true if writing to the | |
832c69cf | 471 | inferior. TARGET is unused. |
c906108c SS |
472 | Result is the number of bytes written or read (zero if error). The |
473 | protocol allows us to return a negative count, indicating that we can't | |
474 | handle the current address but can handle one N bytes further, but | |
475 | vxworks doesn't give us that information. */ | |
476 | ||
477 | static int | |
832c69cf KB |
478 | vx_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
479 | struct target_ops *target) | |
c906108c SS |
480 | { |
481 | int status; | |
482 | Rptrace ptrace_in; | |
483 | Ptrace_return ptrace_out; | |
484 | C_bytes data; | |
485 | enum ptracereq request; | |
486 | int nleft, nxfer; | |
487 | ||
488 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); | |
489 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); | |
490 | ||
c5aa993b | 491 | ptrace_in.pid = inferior_pid; /* XXX pid unnecessary for READDATA */ |
c906108c | 492 | ptrace_in.addr = (int) memaddr; /* Where from */ |
c5aa993b | 493 | ptrace_in.data = len; /* How many bytes */ |
c906108c SS |
494 | |
495 | if (write) | |
496 | { | |
c5aa993b JM |
497 | ptrace_in.info.ttype = DATA; |
498 | ptrace_in.info.more_data = (caddr_t) & data; | |
c906108c SS |
499 | |
500 | data.bytes = (caddr_t) myaddr; /* Where from */ | |
c5aa993b | 501 | data.len = len; /* How many bytes (again, for XDR) */ |
c906108c SS |
502 | request = PTRACE_WRITEDATA; |
503 | } | |
504 | else | |
505 | { | |
c5aa993b | 506 | ptrace_out.info.more_data = (caddr_t) & data; |
c906108c SS |
507 | request = PTRACE_READDATA; |
508 | } | |
509 | /* Loop until the entire request has been satisfied, transferring | |
510 | at most VX_MEMXFER_MAX bytes per iteration. Break from the loop | |
511 | if an error status is returned by the remote debug server. */ | |
512 | ||
513 | nleft = len; | |
514 | status = 0; | |
515 | ||
516 | while (nleft > 0 && status == 0) | |
517 | { | |
518 | nxfer = min (nleft, VX_MEMXFER_MAX); | |
519 | ||
520 | ptrace_in.addr = (int) memaddr; | |
521 | ptrace_in.data = nxfer; | |
522 | data.bytes = (caddr_t) myaddr; | |
523 | data.len = nxfer; | |
524 | ||
525 | /* Request a block from the remote debug server; if RPC fails, | |
526 | report an error and return to debugger command level. */ | |
527 | ||
528 | if (net_ptrace_clnt_call (request, &ptrace_in, &ptrace_out)) | |
c5aa993b | 529 | error (rpcerr); |
c906108c SS |
530 | |
531 | status = ptrace_out.status; | |
532 | if (status == 0) | |
c5aa993b JM |
533 | { |
534 | memaddr += nxfer; | |
535 | myaddr += nxfer; | |
536 | nleft -= nxfer; | |
537 | } | |
c906108c | 538 | else |
c5aa993b JM |
539 | { |
540 | /* A target-side error has ocurred. Set errno to the error | |
541 | code chosen by the target so that a later perror () will | |
542 | say something meaningful. */ | |
c906108c | 543 | |
c5aa993b JM |
544 | errno = ptrace_out.errno_num; |
545 | } | |
c906108c SS |
546 | } |
547 | ||
548 | /* Return the number of bytes transferred. */ | |
549 | ||
550 | return (len - nleft); | |
551 | } | |
552 | ||
553 | static void | |
fba45db2 | 554 | vx_files_info (void) |
c906108c SS |
555 | { |
556 | printf_unfiltered ("\tAttached to host `%s'", vx_host); | |
c5aa993b | 557 | printf_unfiltered (", which has %sfloating point", target_has_fp ? "" : "no "); |
c906108c SS |
558 | printf_unfiltered (".\n"); |
559 | } | |
560 | ||
561 | static void | |
fba45db2 | 562 | vx_run_files_info (void) |
c906108c | 563 | { |
c5aa993b | 564 | printf_unfiltered ("\tRunning %s VxWorks process %s", |
c906108c SS |
565 | vx_running ? "child" : "attached", |
566 | local_hex_string (inferior_pid)); | |
567 | if (vx_running) | |
568 | printf_unfiltered (", function `%s'", vx_running); | |
c5aa993b | 569 | printf_unfiltered (".\n"); |
c906108c SS |
570 | } |
571 | ||
572 | static void | |
fba45db2 | 573 | vx_resume (int pid, int step, enum target_signal siggnal) |
c906108c SS |
574 | { |
575 | int status; | |
576 | Rptrace ptrace_in; | |
577 | Ptrace_return ptrace_out; | |
578 | CORE_ADDR cont_addr; | |
579 | ||
580 | if (pid == -1) | |
581 | pid = inferior_pid; | |
582 | ||
583 | if (siggnal != 0 && siggnal != stop_signal) | |
584 | error ("Cannot send signals to VxWorks processes"); | |
585 | ||
586 | /* Set CONT_ADDR to the address at which we are continuing, | |
587 | or to 1 if we are continuing from where the program stopped. | |
588 | This conforms to traditional ptrace () usage, but at the same | |
589 | time has special meaning for the VxWorks remote debug server. | |
590 | If the address is not 1, the server knows that the target | |
591 | program is jumping to a new address, which requires special | |
592 | handling if there is a breakpoint at the new address. */ | |
593 | ||
594 | cont_addr = read_register (PC_REGNUM); | |
595 | if (cont_addr == stop_pc) | |
596 | cont_addr = 1; | |
597 | ||
598 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); | |
599 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); | |
600 | ||
601 | ptrace_in.pid = pid; | |
c5aa993b | 602 | ptrace_in.addr = cont_addr; /* Target side insists on this, or it panics. */ |
c906108c SS |
603 | |
604 | if (step) | |
c5aa993b | 605 | status = net_step (); |
c906108c SS |
606 | else |
607 | status = net_ptrace_clnt_call (PTRACE_CONT, &ptrace_in, &ptrace_out); | |
608 | ||
609 | if (status) | |
610 | error (rpcerr); | |
611 | if (ptrace_out.status == -1) | |
612 | { | |
613 | errno = ptrace_out.errno_num; | |
614 | perror_with_name ("Resuming remote process"); | |
615 | } | |
616 | } | |
617 | ||
618 | static void | |
fba45db2 | 619 | vx_mourn_inferior (void) |
c906108c SS |
620 | { |
621 | pop_target (); /* Pop back to no-child state */ | |
622 | generic_mourn_inferior (); | |
623 | } | |
c906108c | 624 | \f |
c5aa993b | 625 | |
a14ed312 | 626 | static void vx_add_symbols (char *, int, CORE_ADDR, CORE_ADDR, CORE_ADDR); |
c906108c | 627 | |
c5aa993b JM |
628 | struct find_sect_args |
629 | { | |
630 | CORE_ADDR text_start; | |
631 | CORE_ADDR data_start; | |
632 | CORE_ADDR bss_start; | |
633 | }; | |
c906108c | 634 | |
a14ed312 | 635 | static void find_sect (bfd *, asection *, void *); |
c906108c SS |
636 | |
637 | static void | |
fba45db2 | 638 | find_sect (bfd *abfd, asection *sect, PTR obj) |
c906108c | 639 | { |
c5aa993b | 640 | struct find_sect_args *args = (struct find_sect_args *) obj; |
c906108c SS |
641 | |
642 | if (bfd_get_section_flags (abfd, sect) & (SEC_CODE & SEC_READONLY)) | |
643 | args->text_start = bfd_get_section_vma (abfd, sect); | |
644 | else if (bfd_get_section_flags (abfd, sect) & SEC_ALLOC) | |
645 | { | |
646 | if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) | |
647 | { | |
648 | /* Exclude .ctor and .dtor sections which have SEC_CODE set but not | |
649 | SEC_DATA. */ | |
650 | if (bfd_get_section_flags (abfd, sect) & SEC_DATA) | |
651 | args->data_start = bfd_get_section_vma (abfd, sect); | |
652 | } | |
653 | else | |
654 | args->bss_start = bfd_get_section_vma (abfd, sect); | |
655 | } | |
656 | } | |
657 | ||
658 | static void | |
fba45db2 KB |
659 | vx_add_symbols (char *name, int from_tty, CORE_ADDR text_addr, |
660 | CORE_ADDR data_addr, CORE_ADDR bss_addr) | |
c906108c SS |
661 | { |
662 | struct section_offsets *offs; | |
663 | struct objfile *objfile; | |
664 | struct find_sect_args ss; | |
665 | ||
666 | /* It might be nice to suppress the breakpoint_re_set which happens here | |
667 | because we are going to do one again after the objfile_relocate. */ | |
2df3850c | 668 | objfile = symbol_file_add (name, from_tty, NULL, 0, 0); |
c906108c SS |
669 | |
670 | /* This is a (slightly cheesy) way of superceding the old symbols. A less | |
671 | cheesy way would be to find the objfile with the same name and | |
672 | free_objfile it. */ | |
673 | objfile_to_front (objfile); | |
674 | ||
d4f3574e SS |
675 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
676 | memcpy (offs, objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c SS |
677 | |
678 | ss.text_start = 0; | |
679 | ss.data_start = 0; | |
680 | ss.bss_start = 0; | |
681 | bfd_map_over_sections (objfile->obfd, find_sect, &ss); | |
682 | ||
683 | /* Both COFF and b.out frontends use these SECT_OFF_* values. */ | |
f0a58b0b EZ |
684 | offs->offsets[SECT_OFF_TEXT (objfile)] = text_addr - ss.text_start; |
685 | offs->offsets[SECT_OFF_DATA (objfile)] = data_addr - ss.data_start; | |
686 | offs->offsets[SECT_OFF_BSS (objfile)] = bss_addr - ss.bss_start; | |
c906108c SS |
687 | objfile_relocate (objfile, offs); |
688 | } | |
689 | ||
690 | /* This function allows the addition of incrementally linked object files. */ | |
691 | ||
692 | static void | |
fba45db2 | 693 | vx_load_command (char *arg_string, int from_tty) |
c906108c SS |
694 | { |
695 | CORE_ADDR text_addr; | |
696 | CORE_ADDR data_addr; | |
697 | CORE_ADDR bss_addr; | |
698 | ||
699 | if (arg_string == 0) | |
700 | error ("The load command takes a file name"); | |
701 | ||
702 | arg_string = tilde_expand (arg_string); | |
703 | make_cleanup (free, arg_string); | |
704 | ||
705 | dont_repeat (); | |
706 | ||
707 | /* Refuse to load the module if a debugged task is running. Doing so | |
708 | can have a number of unpleasant consequences to the running task. */ | |
709 | ||
710 | if (inferior_pid != 0 && target_has_execution) | |
711 | { | |
712 | if (query ("You may not load a module while the target task is running.\n\ | |
713 | Kill the target task? ")) | |
c5aa993b | 714 | target_kill (); |
c906108c | 715 | else |
8e1a459b | 716 | error ("Load canceled."); |
c906108c SS |
717 | } |
718 | ||
719 | QUIT; | |
720 | immediate_quit++; | |
721 | if (net_load (arg_string, &text_addr, &data_addr, &bss_addr) == -1) | |
722 | error ("Load failed on target machine"); | |
723 | immediate_quit--; | |
724 | ||
725 | vx_add_symbols (arg_string, from_tty, text_addr, data_addr, bss_addr); | |
726 | ||
727 | /* Getting new symbols may change our opinion about what is | |
728 | frameless. */ | |
729 | reinit_frame_cache (); | |
730 | } | |
731 | ||
732 | /* Single step the target program at the source or machine level. | |
733 | Takes an error exit if rpc fails. | |
734 | Returns -1 if remote single-step operation fails, else 0. */ | |
735 | ||
736 | static int | |
fba45db2 | 737 | net_step (void) |
c906108c SS |
738 | { |
739 | enum clnt_stat status; | |
740 | int step_status; | |
741 | SOURCE_STEP source_step; | |
742 | ||
743 | source_step.taskId = inferior_pid; | |
744 | ||
745 | if (step_range_end) | |
746 | { | |
747 | source_step.startAddr = step_range_start; | |
748 | source_step.endAddr = step_range_end; | |
749 | } | |
750 | else | |
751 | { | |
752 | source_step.startAddr = 0; | |
753 | source_step.endAddr = 0; | |
754 | } | |
755 | ||
756 | status = net_clnt_call (VX_SOURCE_STEP, xdr_SOURCE_STEP, &source_step, | |
757 | xdr_int, &step_status); | |
758 | ||
759 | if (status == RPC_SUCCESS) | |
760 | return step_status; | |
c5aa993b | 761 | else |
c906108c SS |
762 | error (rpcerr); |
763 | } | |
764 | ||
765 | /* Emulate ptrace using RPC calls to the VxWorks target system. | |
766 | Returns nonzero (-1) if RPC status to VxWorks is bad, 0 otherwise. */ | |
767 | ||
768 | static int | |
fba45db2 KB |
769 | net_ptrace_clnt_call (enum ptracereq request, Rptrace *pPtraceIn, |
770 | Ptrace_return *pPtraceOut) | |
c906108c SS |
771 | { |
772 | enum clnt_stat status; | |
773 | ||
774 | status = net_clnt_call (request, xdr_rptrace, pPtraceIn, xdr_ptrace_return, | |
775 | pPtraceOut); | |
776 | ||
777 | if (status != RPC_SUCCESS) | |
c5aa993b | 778 | return -1; |
c906108c SS |
779 | |
780 | return 0; | |
781 | } | |
782 | ||
783 | /* Query the target for the name of the file from which VxWorks was | |
784 | booted. pBootFile is the address of a pointer to the buffer to | |
785 | receive the file name; if the pointer pointed to by pBootFile is | |
786 | NULL, memory for the buffer will be allocated by XDR. | |
787 | Returns -1 if rpc failed, 0 otherwise. */ | |
788 | ||
789 | static int | |
fba45db2 | 790 | net_get_boot_file (char **pBootFile) |
c906108c SS |
791 | { |
792 | enum clnt_stat status; | |
793 | ||
794 | status = net_clnt_call (VX_BOOT_FILE_INQ, xdr_void, (char *) 0, | |
795 | xdr_wrapstring, pBootFile); | |
796 | return (status == RPC_SUCCESS) ? 0 : -1; | |
797 | } | |
798 | ||
832c69cf KB |
799 | /* Fetch a list of loaded object modules from the VxWorks target |
800 | and store in PLOADTABLE. | |
c906108c SS |
801 | Returns -1 if rpc failed, 0 otherwise |
802 | There's no way to check if the returned loadTable is correct. | |
803 | VxWorks doesn't check it. */ | |
804 | ||
805 | static int | |
832c69cf | 806 | net_get_symbols (ldtabl *pLoadTable) |
c906108c SS |
807 | { |
808 | enum clnt_stat status; | |
809 | ||
810 | memset ((char *) pLoadTable, '\0', sizeof (struct ldtabl)); | |
811 | ||
812 | status = net_clnt_call (VX_STATE_INQ, xdr_void, 0, xdr_ldtabl, pLoadTable); | |
813 | return (status == RPC_SUCCESS) ? 0 : -1; | |
814 | } | |
815 | ||
816 | /* Look up a symbol in the VxWorks target's symbol table. | |
817 | Returns status of symbol read on target side (0=success, -1=fail) | |
818 | Returns -1 and complain()s if rpc fails. */ | |
819 | ||
820 | struct complaint cant_contact_target = | |
c5aa993b | 821 | {"Lost contact with VxWorks target", 0, 0}; |
c906108c SS |
822 | |
823 | static int | |
fba45db2 KB |
824 | vx_lookup_symbol (char *name, /* symbol name */ |
825 | CORE_ADDR *pAddr) | |
c906108c SS |
826 | { |
827 | enum clnt_stat status; | |
828 | SYMBOL_ADDR symbolAddr; | |
829 | ||
830 | *pAddr = 0; | |
831 | memset ((char *) &symbolAddr, '\0', sizeof (symbolAddr)); | |
832 | ||
833 | status = net_clnt_call (VX_SYMBOL_INQ, xdr_wrapstring, &name, | |
834 | xdr_SYMBOL_ADDR, &symbolAddr); | |
835 | if (status != RPC_SUCCESS) | |
836 | { | |
837 | complain (&cant_contact_target); | |
838 | return -1; | |
839 | } | |
840 | ||
841 | *pAddr = symbolAddr.addr; | |
842 | return symbolAddr.status; | |
843 | } | |
844 | ||
845 | /* Check to see if the VxWorks target has a floating point coprocessor. | |
846 | Returns 1 if target has floating point processor, 0 otherwise. | |
847 | Calls error() if rpc fails. */ | |
848 | ||
849 | static int | |
fba45db2 | 850 | net_check_for_fp (void) |
c906108c SS |
851 | { |
852 | enum clnt_stat status; | |
c5aa993b | 853 | bool_t fp = 0; /* true if fp processor is present on target board */ |
c906108c SS |
854 | |
855 | status = net_clnt_call (VX_FP_INQUIRE, xdr_void, 0, xdr_bool, &fp); | |
856 | if (status != RPC_SUCCESS) | |
857 | error (rpcerr); | |
858 | ||
c5aa993b | 859 | return (int) fp; |
c906108c SS |
860 | } |
861 | ||
862 | /* Establish an RPC connection with the VxWorks target system. | |
863 | Calls error () if unable to establish connection. */ | |
864 | ||
865 | static void | |
fba45db2 | 866 | net_connect (char *host) |
c906108c SS |
867 | { |
868 | struct sockaddr_in destAddr; | |
869 | struct hostent *destHost; | |
870 | unsigned long addr; | |
871 | ||
872 | /* Get the internet address for the given host. Allow a numeric | |
873 | IP address or a hostname. */ | |
874 | ||
875 | addr = inet_addr (host); | |
876 | if (addr == -1) | |
877 | { | |
878 | destHost = (struct hostent *) gethostbyname (host); | |
879 | if (destHost == NULL) | |
880 | /* FIXME: Probably should include hostname here in quotes. | |
881 | For example if the user types "target vxworks vx960 " it should | |
882 | say "Invalid host `vx960 '." not just "Invalid hostname". */ | |
883 | error ("Invalid hostname. Couldn't find remote host address."); | |
c5aa993b | 884 | addr = *(unsigned long *) destHost->h_addr; |
c906108c SS |
885 | } |
886 | ||
887 | memset (&destAddr, '\0', sizeof (destAddr)); | |
888 | ||
889 | destAddr.sin_addr.s_addr = addr; | |
c5aa993b JM |
890 | destAddr.sin_family = AF_INET; |
891 | destAddr.sin_port = 0; /* set to actual port that remote | |
892 | ptrace is listening on. */ | |
c906108c SS |
893 | |
894 | /* Create a tcp client transport on which to issue | |
895 | calls to the remote ptrace server. */ | |
896 | ||
897 | ptraceSock = RPC_ANYSOCK; | |
898 | pClient = clnttcp_create (&destAddr, RDBPROG, RDBVERS, &ptraceSock, 0, 0); | |
899 | /* FIXME, here is where we deal with different version numbers of the | |
900 | proto */ | |
901 | ||
902 | if (pClient == NULL) | |
903 | { | |
904 | clnt_pcreateerror ("\tnet_connect"); | |
905 | error ("Couldn't connect to remote target."); | |
906 | } | |
907 | } | |
908 | \f | |
909 | /* Sleep for the specified number of milliseconds | |
910 | * (assumed to be less than 1000). | |
911 | * If select () is interrupted, returns immediately; | |
912 | * takes an error exit if select () fails for some other reason. | |
913 | */ | |
914 | ||
915 | static void | |
fba45db2 | 916 | sleep_ms (long ms) |
c906108c SS |
917 | { |
918 | struct timeval select_timeout; | |
919 | int status; | |
920 | ||
921 | select_timeout.tv_sec = 0; | |
922 | select_timeout.tv_usec = ms * 1000; | |
923 | ||
924 | status = select (0, (fd_set *) 0, (fd_set *) 0, (fd_set *) 0, | |
925 | &select_timeout); | |
926 | ||
927 | if (status < 0 && errno != EINTR) | |
928 | perror_with_name ("select"); | |
929 | } | |
930 | ||
931 | static int | |
fba45db2 | 932 | vx_wait (int pid_to_wait_for, struct target_waitstatus *status) |
c906108c SS |
933 | { |
934 | register int pid; | |
935 | RDB_EVENT rdbEvent; | |
936 | int quit_failed; | |
937 | ||
938 | do | |
939 | { | |
940 | /* If CTRL-C is hit during this loop, | |
c5aa993b | 941 | suspend the inferior process. */ |
c906108c SS |
942 | |
943 | quit_failed = 0; | |
944 | if (quit_flag) | |
945 | { | |
946 | quit_failed = (net_quit () == -1); | |
947 | quit_flag = 0; | |
948 | } | |
949 | ||
950 | /* If a net_quit () or net_wait () call has failed, | |
c5aa993b JM |
951 | allow the user to break the connection with the target. |
952 | We can't simply error () out of this loop, since the | |
953 | data structures representing the state of the inferior | |
954 | are in an inconsistent state. */ | |
c906108c SS |
955 | |
956 | if (quit_failed || net_wait (&rdbEvent) == -1) | |
957 | { | |
958 | terminal_ours (); | |
959 | if (query ("Can't %s. Disconnect from target system? ", | |
960 | (quit_failed) ? "suspend remote task" | |
c5aa993b | 961 | : "get status of remote task")) |
c906108c | 962 | { |
c5aa993b | 963 | target_mourn_inferior (); |
c906108c SS |
964 | error ("Use the \"target\" command to reconnect."); |
965 | } | |
966 | else | |
967 | { | |
968 | terminal_inferior (); | |
969 | continue; | |
970 | } | |
971 | } | |
c5aa993b | 972 | |
c906108c SS |
973 | pid = rdbEvent.taskId; |
974 | if (pid == 0) | |
975 | { | |
976 | sleep_ms (200); /* FIXME Don't kill the network too badly */ | |
977 | } | |
978 | else if (pid != inferior_pid) | |
96baa820 JM |
979 | internal_error ("Bad pid for debugged task: %s\n", |
980 | local_hex_string ((unsigned long) pid)); | |
c5aa993b JM |
981 | } |
982 | while (pid == 0); | |
c906108c SS |
983 | |
984 | /* The mostly likely kind. */ | |
985 | status->kind = TARGET_WAITKIND_STOPPED; | |
986 | ||
987 | switch (rdbEvent.eventType) | |
988 | { | |
989 | case EVENT_EXIT: | |
990 | status->kind = TARGET_WAITKIND_EXITED; | |
991 | /* FIXME is it possible to distinguish between a | |
c5aa993b | 992 | normal vs abnormal exit in VxWorks? */ |
c906108c SS |
993 | status->value.integer = 0; |
994 | break; | |
995 | ||
996 | case EVENT_START: | |
997 | /* Task was just started. */ | |
998 | status->value.sig = TARGET_SIGNAL_TRAP; | |
999 | break; | |
1000 | ||
1001 | case EVENT_STOP: | |
1002 | status->value.sig = TARGET_SIGNAL_TRAP; | |
1003 | /* XXX was it stopped by a signal? act accordingly */ | |
1004 | break; | |
1005 | ||
1006 | case EVENT_BREAK: /* Breakpoint was hit. */ | |
1007 | status->value.sig = TARGET_SIGNAL_TRAP; | |
1008 | break; | |
1009 | ||
c5aa993b | 1010 | case EVENT_SUSPEND: /* Task was suspended, probably by ^C. */ |
c906108c SS |
1011 | status->value.sig = TARGET_SIGNAL_INT; |
1012 | break; | |
1013 | ||
c5aa993b | 1014 | case EVENT_BUS_ERR: /* Task made evil nasty reference. */ |
c906108c SS |
1015 | status->value.sig = TARGET_SIGNAL_BUS; |
1016 | break; | |
1017 | ||
1018 | case EVENT_ZERO_DIV: /* Division by zero */ | |
1019 | status->value.sig = TARGET_SIGNAL_FPE; | |
1020 | break; | |
1021 | ||
1022 | case EVENT_SIGNAL: | |
1023 | #ifdef I80960 | |
1024 | status->value.sig = i960_fault_to_signal (rdbEvent.sigType); | |
1025 | #else | |
1026 | /* Back in the old days, before enum target_signal, this code used | |
c5aa993b JM |
1027 | to add NSIG to the signal number and claim that PRINT_RANDOM_SIGNAL |
1028 | would take care of it. But PRINT_RANDOM_SIGNAL has never been | |
1029 | defined except on the i960, so I don't really know what we are | |
1030 | supposed to do on other architectures. */ | |
c906108c SS |
1031 | status->value.sig = TARGET_SIGNAL_UNKNOWN; |
1032 | #endif | |
1033 | break; | |
c5aa993b | 1034 | } /* switch */ |
c906108c SS |
1035 | return pid; |
1036 | } | |
1037 | \f | |
1038 | static int | |
fba45db2 | 1039 | symbol_stub (char *arg) |
c906108c SS |
1040 | { |
1041 | symbol_file_command (arg, 0); | |
1042 | return 1; | |
1043 | } | |
1044 | ||
1045 | static int | |
fba45db2 | 1046 | add_symbol_stub (char *arg) |
c906108c | 1047 | { |
c5aa993b | 1048 | struct ldfile *pLoadFile = (struct ldfile *) arg; |
c906108c | 1049 | |
c5aa993b | 1050 | printf_unfiltered ("\t%s: ", pLoadFile->name); |
c906108c SS |
1051 | vx_add_symbols (pLoadFile->name, 0, pLoadFile->txt_addr, |
1052 | pLoadFile->data_addr, pLoadFile->bss_addr); | |
1053 | printf_unfiltered ("ok\n"); | |
1054 | return 1; | |
1055 | } | |
1056 | /* Target command for VxWorks target systems. | |
1057 | ||
1058 | Used in vxgdb. Takes the name of a remote target machine | |
1059 | running vxWorks and connects to it to initialize remote network | |
1060 | debugging. */ | |
1061 | ||
1062 | static void | |
fba45db2 | 1063 | vx_open (char *args, int from_tty) |
c906108c SS |
1064 | { |
1065 | extern int close (); | |
1066 | char *bootFile; | |
1067 | extern char *source_path; | |
1068 | struct ldtabl loadTable; | |
1069 | struct ldfile *pLoadFile; | |
1070 | int i; | |
1071 | extern CLIENT *pClient; | |
1072 | int symbols_added = 0; | |
1073 | ||
1074 | if (!args) | |
1075 | error_no_arg ("target machine name"); | |
1076 | ||
1077 | target_preopen (from_tty); | |
c5aa993b | 1078 | |
c906108c SS |
1079 | unpush_target (&vx_ops); |
1080 | printf_unfiltered ("Attaching remote machine across net...\n"); | |
1081 | gdb_flush (gdb_stdout); | |
1082 | ||
1083 | /* Allow the user to kill the connect attempt by typing ^C. | |
1084 | Wait until the call to target_has_fp () completes before | |
1085 | disallowing an immediate quit, since even if net_connect () | |
1086 | is successful, the remote debug server might be hung. */ | |
1087 | ||
1088 | immediate_quit++; | |
1089 | ||
1090 | net_connect (args); | |
1091 | target_has_fp = net_check_for_fp (); | |
1092 | printf_filtered ("Connected to %s.\n", args); | |
1093 | ||
1094 | immediate_quit--; | |
1095 | ||
1096 | push_target (&vx_ops); | |
1097 | ||
1098 | /* Save a copy of the target host's name. */ | |
1099 | vx_host = savestring (args, strlen (args)); | |
1100 | ||
1101 | /* Find out the name of the file from which the target was booted | |
1102 | and load its symbol table. */ | |
1103 | ||
1104 | printf_filtered ("Looking in Unix path for all loaded modules:\n"); | |
1105 | bootFile = NULL; | |
1106 | if (!net_get_boot_file (&bootFile)) | |
1107 | { | |
1108 | if (*bootFile) | |
1109 | { | |
1110 | printf_filtered ("\t%s: ", bootFile); | |
1111 | /* This assumes that the kernel is never relocated. Hope that is an | |
1112 | accurate assumption. */ | |
1113 | if (catch_errors | |
1114 | (symbol_stub, | |
1115 | bootFile, | |
1116 | "Error while reading symbols from boot file:\n", | |
1117 | RETURN_MASK_ALL)) | |
1118 | puts_filtered ("ok\n"); | |
1119 | } | |
1120 | else if (from_tty) | |
1121 | printf_unfiltered ("VxWorks kernel symbols not loaded.\n"); | |
1122 | } | |
1123 | else | |
1124 | error ("Can't retrieve boot file name from target machine."); | |
1125 | ||
1126 | clnt_freeres (pClient, xdr_wrapstring, &bootFile); | |
1127 | ||
1128 | if (net_get_symbols (&loadTable) != 0) | |
1129 | error ("Can't read loaded modules from target machine"); | |
1130 | ||
c5aa993b | 1131 | i = 0 - 1; |
c906108c SS |
1132 | while (++i < loadTable.tbl_size) |
1133 | { | |
c5aa993b JM |
1134 | QUIT; /* FIXME, avoids clnt_freeres below: mem leak */ |
1135 | pLoadFile = &loadTable.tbl_ent[i]; | |
c906108c | 1136 | #ifdef WRS_ORIG |
c5aa993b JM |
1137 | { |
1138 | register int desc; | |
1139 | struct cleanup *old_chain; | |
1140 | char *fullname = NULL; | |
1141 | ||
1142 | desc = openp (source_path, 0, pLoadFile->name, O_RDONLY, 0, &fullname); | |
1143 | if (desc < 0) | |
1144 | perror_with_name (pLoadFile->name); | |
1145 | old_chain = make_cleanup (close, desc); | |
1146 | add_file_at_addr (fullname, desc, pLoadFile->txt_addr, pLoadFile->data_addr, | |
1147 | pLoadFile->bss_addr); | |
1148 | do_cleanups (old_chain); | |
1149 | } | |
c906108c SS |
1150 | #else |
1151 | /* FIXME: Is there something better to search than the PATH? (probably | |
c5aa993b JM |
1152 | not the source path, since source might be in different directories |
1153 | than objects. */ | |
c906108c | 1154 | |
c5aa993b | 1155 | if (catch_errors (add_symbol_stub, (char *) pLoadFile, (char *) 0, |
c906108c SS |
1156 | RETURN_MASK_ALL)) |
1157 | symbols_added = 1; | |
1158 | #endif | |
1159 | } | |
1160 | printf_filtered ("Done.\n"); | |
1161 | ||
1162 | clnt_freeres (pClient, xdr_ldtabl, &loadTable); | |
1163 | ||
1164 | /* Getting new symbols may change our opinion about what is | |
1165 | frameless. */ | |
1166 | if (symbols_added) | |
1167 | reinit_frame_cache (); | |
1168 | } | |
1169 | \f | |
1170 | /* Takes a task started up outside of gdb and ``attaches'' to it. | |
1171 | This stops it cold in its tracks and allows us to start tracing it. */ | |
1172 | ||
1173 | static void | |
fba45db2 | 1174 | vx_attach (char *args, int from_tty) |
c906108c SS |
1175 | { |
1176 | unsigned long pid; | |
1177 | char *cptr = 0; | |
1178 | Rptrace ptrace_in; | |
1179 | Ptrace_return ptrace_out; | |
1180 | int status; | |
1181 | ||
1182 | if (!args) | |
1183 | error_no_arg ("process-id to attach"); | |
1184 | ||
1185 | pid = strtoul (args, &cptr, 0); | |
1186 | if ((cptr == args) || (*cptr != '\0')) | |
1187 | error ("Invalid process-id -- give a single number in decimal or 0xhex"); | |
1188 | ||
1189 | if (from_tty) | |
1190 | printf_unfiltered ("Attaching pid %s.\n", | |
c5aa993b | 1191 | local_hex_string ((unsigned long) pid)); |
c906108c | 1192 | |
c5aa993b JM |
1193 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); |
1194 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); | |
c906108c SS |
1195 | ptrace_in.pid = pid; |
1196 | ||
1197 | status = net_ptrace_clnt_call (PTRACE_ATTACH, &ptrace_in, &ptrace_out); | |
1198 | if (status == -1) | |
1199 | error (rpcerr); | |
1200 | if (ptrace_out.status == -1) | |
1201 | { | |
1202 | errno = ptrace_out.errno_num; | |
1203 | perror_with_name ("Attaching remote process"); | |
1204 | } | |
1205 | ||
1206 | /* It worked... */ | |
1207 | ||
1208 | inferior_pid = pid; | |
1209 | push_target (&vx_run_ops); | |
1210 | ||
1211 | if (vx_running) | |
1212 | free (vx_running); | |
1213 | vx_running = 0; | |
1214 | } | |
1215 | ||
1216 | /* detach_command -- | |
1217 | takes a program previously attached to and detaches it. | |
1218 | The program resumes execution and will no longer stop | |
1219 | on signals, etc. We better not have left any breakpoints | |
1220 | in the program or it'll die when it hits one. For this | |
1221 | to work, it may be necessary for the process to have been | |
1222 | previously attached. It *might* work if the program was | |
1223 | started via the normal ptrace (PTRACE_TRACEME). */ | |
1224 | ||
1225 | static void | |
fba45db2 | 1226 | vx_detach (char *args, int from_tty) |
c906108c SS |
1227 | { |
1228 | Rptrace ptrace_in; | |
1229 | Ptrace_return ptrace_out; | |
1230 | int signal = 0; | |
1231 | int status; | |
1232 | ||
1233 | if (args) | |
1234 | error ("Argument given to VxWorks \"detach\"."); | |
1235 | ||
1236 | if (from_tty) | |
c5aa993b JM |
1237 | printf_unfiltered ("Detaching pid %s.\n", |
1238 | local_hex_string ((unsigned long) inferior_pid)); | |
c906108c | 1239 | |
c5aa993b | 1240 | if (args) /* FIXME, should be possible to leave suspended */ |
c906108c | 1241 | signal = atoi (args); |
c5aa993b JM |
1242 | |
1243 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); | |
1244 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); | |
c906108c SS |
1245 | ptrace_in.pid = inferior_pid; |
1246 | ||
1247 | status = net_ptrace_clnt_call (PTRACE_DETACH, &ptrace_in, &ptrace_out); | |
1248 | if (status == -1) | |
1249 | error (rpcerr); | |
1250 | if (ptrace_out.status == -1) | |
1251 | { | |
1252 | errno = ptrace_out.errno_num; | |
1253 | perror_with_name ("Detaching VxWorks process"); | |
1254 | } | |
1255 | ||
1256 | inferior_pid = 0; | |
c5aa993b | 1257 | pop_target (); /* go back to non-executing VxWorks connection */ |
c906108c SS |
1258 | } |
1259 | ||
1260 | /* vx_kill -- takes a running task and wipes it out. */ | |
1261 | ||
1262 | static void | |
fba45db2 | 1263 | vx_kill (void) |
c906108c SS |
1264 | { |
1265 | Rptrace ptrace_in; | |
1266 | Ptrace_return ptrace_out; | |
1267 | int status; | |
1268 | ||
c5aa993b | 1269 | printf_unfiltered ("Killing pid %s.\n", local_hex_string ((unsigned long) inferior_pid)); |
c906108c | 1270 | |
c5aa993b JM |
1271 | memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in)); |
1272 | memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out)); | |
c906108c SS |
1273 | ptrace_in.pid = inferior_pid; |
1274 | ||
1275 | status = net_ptrace_clnt_call (PTRACE_KILL, &ptrace_in, &ptrace_out); | |
1276 | if (status == -1) | |
1277 | warning (rpcerr); | |
1278 | else if (ptrace_out.status == -1) | |
1279 | { | |
1280 | errno = ptrace_out.errno_num; | |
1281 | perror_with_name ("Killing VxWorks process"); | |
1282 | } | |
1283 | ||
1284 | /* If it gives good status, the process is *gone*, no events remain. | |
1285 | If the kill failed, assume the process is gone anyhow. */ | |
1286 | inferior_pid = 0; | |
c5aa993b | 1287 | pop_target (); /* go back to non-executing VxWorks connection */ |
c906108c SS |
1288 | } |
1289 | ||
1290 | /* Clean up from the VxWorks process target as it goes away. */ | |
1291 | ||
1292 | static void | |
fba45db2 | 1293 | vx_proc_close (int quitting) |
c906108c SS |
1294 | { |
1295 | inferior_pid = 0; /* No longer have a process. */ | |
1296 | if (vx_running) | |
1297 | free (vx_running); | |
1298 | vx_running = 0; | |
1299 | } | |
1300 | \f | |
1301 | /* Make an RPC call to the VxWorks target. | |
1302 | Returns RPC status. */ | |
1303 | ||
1304 | static enum clnt_stat | |
fba45db2 KB |
1305 | net_clnt_call (enum ptracereq procNum, xdrproc_t inProc, char *in, |
1306 | xdrproc_t outProc, char *out) | |
c906108c SS |
1307 | { |
1308 | enum clnt_stat status; | |
c5aa993b | 1309 | |
c906108c SS |
1310 | status = clnt_call (pClient, procNum, inProc, in, outProc, out, rpcTimeout); |
1311 | ||
1312 | if (status != RPC_SUCCESS) | |
c5aa993b | 1313 | clnt_perrno (status); |
c906108c SS |
1314 | |
1315 | return status; | |
1316 | } | |
1317 | ||
1318 | /* Clean up before losing control. */ | |
1319 | ||
1320 | static void | |
fba45db2 | 1321 | vx_close (int quitting) |
c906108c SS |
1322 | { |
1323 | if (pClient) | |
1324 | clnt_destroy (pClient); /* The net connection */ | |
1325 | pClient = 0; | |
1326 | ||
1327 | if (vx_host) | |
1328 | free (vx_host); /* The hostname */ | |
1329 | vx_host = 0; | |
1330 | } | |
1331 | ||
1332 | /* A vxprocess target should be started via "run" not "target". */ | |
c5aa993b | 1333 | /*ARGSUSED */ |
c906108c | 1334 | static void |
fba45db2 | 1335 | vx_proc_open (char *name, int from_tty) |
c906108c SS |
1336 | { |
1337 | error ("Use the \"run\" command to start a VxWorks process."); | |
1338 | } | |
1339 | ||
1340 | static void | |
fba45db2 | 1341 | init_vx_ops (void) |
c906108c SS |
1342 | { |
1343 | vx_ops.to_shortname = "vxworks"; | |
1344 | vx_ops.to_longname = "VxWorks target memory via RPC over TCP/IP"; | |
1345 | vx_ops.to_doc = "Use VxWorks target memory. \n\ | |
1346 | Specify the name of the machine to connect to."; | |
1347 | vx_ops.to_open = vx_open; | |
1348 | vx_ops.to_close = vx_close; | |
1349 | vx_ops.to_attach = vx_attach; | |
1350 | vx_ops.to_xfer_memory = vx_xfer_memory; | |
1351 | vx_ops.to_files_info = vx_files_info; | |
1352 | vx_ops.to_load = vx_load_command; | |
1353 | vx_ops.to_lookup_symbol = vx_lookup_symbol; | |
1354 | vx_ops.to_create_inferior = vx_create_inferior; | |
1355 | vx_ops.to_stratum = core_stratum; | |
1356 | vx_ops.to_has_all_memory = 1; | |
1357 | vx_ops.to_has_memory = 1; | |
c5aa993b | 1358 | vx_ops.to_magic = OPS_MAGIC; /* Always the last thing */ |
c906108c SS |
1359 | }; |
1360 | ||
1361 | static void | |
fba45db2 | 1362 | init_vx_run_ops (void) |
c906108c SS |
1363 | { |
1364 | vx_run_ops.to_shortname = "vxprocess"; | |
1365 | vx_run_ops.to_longname = "VxWorks process"; | |
1366 | vx_run_ops.to_doc = "VxWorks process; started by the \"run\" command."; | |
1367 | vx_run_ops.to_open = vx_proc_open; | |
1368 | vx_run_ops.to_close = vx_proc_close; | |
1369 | vx_run_ops.to_detach = vx_detach; | |
1370 | vx_run_ops.to_resume = vx_resume; | |
1371 | vx_run_ops.to_wait = vx_wait; | |
1372 | vx_run_ops.to_fetch_registers = vx_read_register; | |
1373 | vx_run_ops.to_store_registers = vx_write_register; | |
1374 | vx_run_ops.to_prepare_to_store = vx_prepare_to_store; | |
1375 | vx_run_ops.to_xfer_memory = vx_xfer_memory; | |
1376 | vx_run_ops.to_files_info = vx_run_files_info; | |
1377 | vx_run_ops.to_insert_breakpoint = vx_insert_breakpoint; | |
1378 | vx_run_ops.to_remove_breakpoint = vx_remove_breakpoint; | |
1379 | vx_run_ops.to_kill = vx_kill; | |
1380 | vx_run_ops.to_load = vx_load_command; | |
1381 | vx_run_ops.to_lookup_symbol = vx_lookup_symbol; | |
c5aa993b | 1382 | vx_run_ops.to_mourn_inferior = vx_mourn_inferior; |
c906108c SS |
1383 | vx_run_ops.to_stratum = process_stratum; |
1384 | vx_run_ops.to_has_memory = 1; | |
1385 | vx_run_ops.to_has_stack = 1; | |
1386 | vx_run_ops.to_has_registers = 1; | |
c5aa993b JM |
1387 | vx_run_ops.to_has_execution = 1; |
1388 | vx_run_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
1389 | } |
1390 | \f | |
1391 | void | |
fba45db2 | 1392 | _initialize_vx (void) |
c906108c SS |
1393 | { |
1394 | init_vx_ops (); | |
1395 | add_target (&vx_ops); | |
1396 | init_vx_run_ops (); | |
1397 | add_target (&vx_run_ops); | |
1398 | ||
1399 | add_show_from_set | |
1400 | (add_set_cmd ("vxworks-timeout", class_support, var_uinteger, | |
1401 | (char *) &rpcTimeout.tv_sec, | |
1402 | "Set seconds to wait for rpc calls to return.\n\ | |
1403 | Set the number of seconds to wait for rpc calls to return.", &setlist), | |
1404 | &showlist); | |
1405 | } |