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07d021a6 | 1 | /* Memory-access and commands for remote VxWorks processes, for GDB. |
7d9884b9 | 2 | Copyright 1990, 1991 Free Software Foundation, Inc. |
07d021a6 JG |
3 | Contributed by Wind River Systems and Cygnus Support. |
4 | ||
5 | This file is part of GDB. | |
6 | ||
99a7de40 | 7 | This program is free software; you can redistribute it and/or modify |
07d021a6 | 8 | it under the terms of the GNU General Public License as published by |
99a7de40 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
07d021a6 | 11 | |
99a7de40 | 12 | This program is distributed in the hope that it will be useful, |
07d021a6 JG |
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
99a7de40 JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
07d021a6 | 20 | |
7d9884b9 | 21 | #define TM_FILE_OVERRIDE |
07d021a6 JG |
22 | #include "defs.h" |
23 | #include "tm-vxworks68.h" | |
07d021a6 JG |
24 | #include "frame.h" |
25 | #include "inferior.h" | |
26 | #include "wait.h" | |
27 | #include "target.h" | |
28 | #include "gdbcore.h" | |
29 | #include "command.h" | |
30 | #include "symtab.h" | |
31 | #include "symfile.h" /* for struct complaint */ | |
32 | ||
07d021a6 JG |
33 | #include <string.h> |
34 | #include <errno.h> | |
35 | #include <signal.h> | |
36 | #include <fcntl.h> | |
37 | #include <sys/types.h> | |
38 | #include <sys/time.h> | |
39 | #include <sys/socket.h> | |
40 | #define free bogon_free /* Sun claims "int free()" not void */ | |
41 | #include <rpc/rpc.h> | |
42 | #undef free | |
43 | #include <netdb.h> | |
44 | #include <ptrace.h> | |
45 | #include "xdr_ptrace.h" | |
46 | #include "xdr_ld.h" | |
47 | #include "xdr_rdb.h" | |
48 | #include "dbgRpcLib.h" | |
49 | ||
50 | /* get rid of value.h if possible */ | |
51 | #include <value.h> | |
52 | #include <symtab.h> | |
53 | ||
07d021a6 JG |
54 | extern void symbol_file_command (); |
55 | extern int stop_soon_quietly; /* for wait_for_inferior */ | |
56 | ||
57 | static int net_ptrace_clnt_call (); /* Forward decl */ | |
58 | static enum clnt_stat net_clnt_call (); /* Forward decl */ | |
59 | extern struct target_ops vx_ops, vx_run_ops; /* Forward declaration */ | |
60 | ||
61 | /* Saved name of target host and called function for "info files". | |
62 | Both malloc'd. */ | |
63 | ||
64 | static char *vx_host; | |
65 | static char *vx_running; | |
66 | ||
67 | /* Nonzero means target that is being debugged remotely has a floating | |
68 | point processor. */ | |
69 | ||
70 | static int target_has_fp; | |
71 | ||
72 | /* Default error message when the network is forking up. */ | |
73 | ||
74 | static const char rpcerr[] = "network target debugging: rpc error"; | |
75 | ||
76 | CLIENT *pClient; /* client used in net debugging */ | |
77 | static int ptraceSock = RPC_ANYSOCK; | |
78 | extern int errno; | |
79 | ||
80 | enum clnt_stat net_clnt_call(); | |
81 | static void parse_args (); | |
82 | ||
83 | static struct timeval rpcTimeout = { 10, 0 }; | |
84 | ||
85 | static char *skip_white_space (); | |
86 | static char *find_white_space (); | |
87 | ||
88 | /* Tell the VxWorks target system to download a file. | |
89 | The load addresses of the text, data, and bss segments are | |
90 | stored in pTextAddr, pDataAddr, and *pBssAddr (respectively). | |
91 | Returns 0 for success, -1 for failure. */ | |
92 | ||
93 | static int | |
94 | net_load (filename, pTextAddr, pDataAddr, pBssAddr) | |
95 | char *filename; | |
96 | CORE_ADDR *pTextAddr; | |
97 | CORE_ADDR *pDataAddr; | |
98 | CORE_ADDR *pBssAddr; | |
99 | { | |
100 | enum clnt_stat status; | |
101 | struct ldfile ldstruct; | |
102 | struct timeval load_timeout; | |
103 | ||
104 | bzero ((char *) &ldstruct, sizeof (ldstruct)); | |
105 | ||
106 | /* We invoke clnt_call () here directly, instead of through | |
107 | net_clnt_call (), because we need to set a large timeout value. | |
108 | The load on the target side can take quite a while, easily | |
109 | more than 10 seconds. The user can kill this call by typing | |
110 | CTRL-C if there really is a problem with the load. */ | |
111 | ||
112 | load_timeout.tv_sec = 0x7FFF7FFF; /* A large number, effectively inf. */ | |
113 | load_timeout.tv_usec = 0; | |
114 | ||
115 | status = clnt_call (pClient, VX_LOAD, xdr_wrapstring, &filename, xdr_ldfile, | |
116 | &ldstruct, load_timeout); | |
117 | ||
118 | if (status == RPC_SUCCESS) | |
119 | { | |
120 | if (*ldstruct.name == NULL) /* load failed on VxWorks side */ | |
121 | return -1; | |
122 | *pTextAddr = ldstruct.txt_addr; | |
123 | *pDataAddr = ldstruct.data_addr; | |
124 | *pBssAddr = ldstruct.bss_addr; | |
125 | return 0; | |
126 | } | |
127 | else | |
128 | return -1; | |
129 | } | |
130 | ||
131 | /* returns 0 if successful, errno if RPC failed or VxWorks complains. */ | |
132 | ||
133 | static int | |
134 | net_break (addr, procnum) | |
135 | int addr; | |
136 | u_long procnum; | |
137 | { | |
138 | enum clnt_stat status; | |
139 | int break_status; | |
140 | Rptrace ptrace_in; /* XXX This is stupid. It doesn't need to be a ptrace | |
141 | structure. How about something smaller? */ | |
142 | ||
143 | bzero ((char *) &ptrace_in, sizeof (ptrace_in)); | |
144 | break_status = 0; | |
145 | ||
146 | ptrace_in.addr = addr; | |
147 | ptrace_in.pid = inferior_pid; | |
148 | ||
149 | status = net_clnt_call (procnum, xdr_rptrace, &ptrace_in, xdr_int, | |
150 | &break_status); | |
151 | ||
152 | if (status != RPC_SUCCESS) | |
153 | return errno; | |
154 | ||
155 | if (break_status == -1) | |
156 | return ENOMEM; | |
157 | return break_status; /* probably (FIXME) zero */ | |
158 | } | |
159 | ||
160 | /* returns 0 if successful, errno otherwise */ | |
161 | ||
162 | int | |
163 | vx_insert_breakpoint (addr) | |
164 | int addr; | |
165 | { | |
166 | return net_break (addr, VX_BREAK_ADD); | |
167 | } | |
168 | ||
169 | /* returns 0 if successful, errno otherwise */ | |
170 | ||
171 | int | |
172 | vx_remove_breakpoint (addr) | |
173 | int addr; | |
174 | { | |
175 | return net_break (addr, VX_BREAK_DELETE); | |
176 | } | |
177 | ||
178 | /* Call a function on the VxWorks target system. | |
179 | ARGS is a vector of values of arguments (NARGS of them). | |
180 | FUNCTION is a value, the function to be called. | |
181 | Returns a struct value * representing what the function returned. | |
182 | May fail to return, if a breakpoint or signal is hit | |
183 | during the execution of the function. */ | |
184 | ||
185 | #ifdef FIXME | |
186 | /* FIXME, function calls are really fried. GO back to manual method. */ | |
187 | value | |
e17960fb | 188 | call_function (function, nargs, args) |
07d021a6 JG |
189 | value function; |
190 | int nargs; | |
191 | value *args; | |
192 | { | |
193 | register CORE_ADDR sp; | |
194 | register int i; | |
195 | CORE_ADDR start_sp; | |
196 | static REGISTER_TYPE dummy[] = CALL_DUMMY; | |
197 | REGISTER_TYPE dummy1[sizeof dummy / sizeof (REGISTER_TYPE)]; | |
198 | CORE_ADDR old_sp; | |
199 | struct type *value_type; | |
200 | unsigned char struct_return; | |
201 | CORE_ADDR struct_addr; | |
202 | struct inferior_status inf_status; | |
203 | struct cleanup *old_chain; | |
204 | CORE_ADDR funaddr; | |
205 | int using_gcc; | |
206 | ||
207 | save_inferior_status (&inf_status, 1); | |
208 | old_chain = make_cleanup (restore_inferior_status, &inf_status); | |
209 | ||
210 | /* PUSH_DUMMY_FRAME is responsible for saving the inferior registers | |
211 | (and POP_FRAME for restoring them). (At least on most machines) | |
212 | they are saved on the stack in the inferior. */ | |
213 | PUSH_DUMMY_FRAME; | |
214 | ||
215 | old_sp = sp = read_register (SP_REGNUM); | |
216 | ||
217 | #if 1 INNER_THAN 2 /* Stack grows down */ | |
218 | sp -= sizeof dummy; | |
219 | start_sp = sp; | |
220 | #else /* Stack grows up */ | |
221 | start_sp = sp; | |
222 | sp += sizeof dummy; | |
223 | #endif | |
224 | ||
225 | funaddr = find_function_addr (function, &value_type); | |
226 | ||
227 | { | |
228 | struct block *b = block_for_pc (funaddr); | |
229 | /* If compiled without -g, assume GCC. */ | |
230 | using_gcc = b == NULL || BLOCK_GCC_COMPILED (b); | |
231 | } | |
232 | ||
233 | /* Are we returning a value using a structure return or a normal | |
234 | value return? */ | |
235 | ||
236 | struct_return = using_struct_return (function, funaddr, value_type, | |
237 | using_gcc); | |
238 | ||
239 | /* Create a call sequence customized for this function | |
240 | and the number of arguments for it. */ | |
241 | bcopy (dummy, dummy1, sizeof dummy); | |
242 | FIX_CALL_DUMMY (dummy1, start_sp, funaddr, nargs, args, | |
243 | value_type, using_gcc); | |
244 | ||
245 | #if CALL_DUMMY_LOCATION == ON_STACK | |
246 | write_memory (start_sp, dummy1, sizeof dummy); | |
247 | ||
248 | #else /* Not on stack. */ | |
249 | #if CALL_DUMMY_LOCATION == BEFORE_TEXT_END | |
250 | /* Convex Unix prohibits executing in the stack segment. */ | |
251 | /* Hope there is empty room at the top of the text segment. */ | |
252 | { | |
253 | static checked = 0; | |
254 | if (!checked) | |
255 | for (start_sp = text_end - sizeof dummy; start_sp < text_end; ++start_sp) | |
256 | if (read_memory_integer (start_sp, 1) != 0) | |
257 | error ("text segment full -- no place to put call"); | |
258 | checked = 1; | |
259 | sp = old_sp; | |
260 | start_sp = text_end - sizeof dummy; | |
261 | write_memory (start_sp, dummy1, sizeof dummy); | |
262 | } | |
263 | #else /* After text_end. */ | |
264 | { | |
265 | int errcode; | |
266 | sp = old_sp; | |
267 | start_sp = text_end; | |
268 | errcode = target_write_memory (start_sp, dummy1, sizeof dummy); | |
269 | if (errcode != 0) | |
e17960fb | 270 | error ("Cannot write text segment -- vx_call_function failed"); |
07d021a6 JG |
271 | } |
272 | #endif /* After text_end. */ | |
273 | #endif /* Not on stack. */ | |
274 | ||
275 | #ifdef STACK_ALIGN | |
276 | /* If stack grows down, we must leave a hole at the top. */ | |
277 | { | |
278 | int len = 0; | |
279 | ||
280 | /* Reserve space for the return structure to be written on the | |
281 | stack, if necessary */ | |
282 | ||
283 | if (struct_return) | |
284 | len += TYPE_LENGTH (value_type); | |
285 | ||
286 | for (i = nargs - 1; i >= 0; i--) | |
287 | len += TYPE_LENGTH (VALUE_TYPE (value_arg_coerce (args[i]))); | |
288 | #ifdef CALL_DUMMY_STACK_ADJUST | |
289 | len += CALL_DUMMY_STACK_ADJUST; | |
290 | #endif | |
291 | #if 1 INNER_THAN 2 | |
292 | sp -= STACK_ALIGN (len) - len; | |
293 | #else | |
294 | sp += STACK_ALIGN (len) - len; | |
295 | #endif | |
296 | } | |
297 | #endif /* STACK_ALIGN */ | |
298 | ||
299 | /* Reserve space for the return structure to be written on the | |
300 | stack, if necessary */ | |
301 | ||
302 | if (struct_return) | |
303 | { | |
304 | #if 1 INNER_THAN 2 | |
305 | sp -= TYPE_LENGTH (value_type); | |
306 | struct_addr = sp; | |
307 | #else | |
308 | struct_addr = sp; | |
309 | sp += TYPE_LENGTH (value_type); | |
310 | #endif | |
311 | } | |
312 | ||
313 | #if defined (REG_STRUCT_HAS_ADDR) | |
314 | { | |
315 | /* This is a machine like the sparc, where we need to pass a pointer | |
316 | to the structure, not the structure itself. */ | |
317 | if (REG_STRUCT_HAS_ADDR (using_gcc)) | |
318 | for (i = nargs - 1; i >= 0; i--) | |
f1d77e90 JG |
319 | if ( TYPE_CODE (VALUE_TYPE (args[i])) == TYPE_CODE_STRUCT |
320 | || TYPE_CODE (VALUE_TYPE (args[i])) == TYPE_CODE_UNION) | |
07d021a6 JG |
321 | { |
322 | CORE_ADDR addr; | |
323 | #if !(1 INNER_THAN 2) | |
324 | /* The stack grows up, so the address of the thing we push | |
325 | is the stack pointer before we push it. */ | |
326 | addr = sp; | |
327 | #endif | |
328 | /* Push the structure. */ | |
329 | sp = value_push (sp, args[i]); | |
330 | #if 1 INNER_THAN 2 | |
331 | /* The stack grows down, so the address of the thing we push | |
332 | is the stack pointer after we push it. */ | |
333 | addr = sp; | |
334 | #endif | |
335 | /* The value we're going to pass is the address of the thing | |
336 | we just pushed. */ | |
337 | args[i] = value_from_long (builtin_type_long, (LONGEST) addr); | |
338 | } | |
339 | } | |
340 | #endif /* REG_STRUCT_HAS_ADDR. */ | |
341 | ||
342 | #ifdef PUSH_ARGUMENTS | |
343 | PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr); | |
344 | #else /* !PUSH_ARGUMENTS */ | |
345 | for (i = nargs - 1; i >= 0; i--) | |
346 | sp = value_arg_push (sp, args[i]); | |
347 | #endif /* !PUSH_ARGUMENTS */ | |
348 | ||
349 | #ifdef CALL_DUMMY_STACK_ADJUST | |
350 | #if 1 INNER_THAN 2 | |
351 | sp -= CALL_DUMMY_STACK_ADJUST; | |
352 | #else | |
353 | sp += CALL_DUMMY_STACK_ADJUST; | |
354 | #endif | |
355 | #endif /* CALL_DUMMY_STACK_ADJUST */ | |
356 | ||
357 | /* Store the address at which the structure is supposed to be | |
358 | written. Note that this (and the code which reserved the space | |
359 | above) assumes that gcc was used to compile this function. Since | |
360 | it doesn't cost us anything but space and if the function is pcc | |
361 | it will ignore this value, we will make that assumption. | |
362 | ||
363 | Also note that on some machines (like the sparc) pcc uses a | |
364 | convention like gcc's. */ | |
365 | ||
366 | if (struct_return) | |
367 | STORE_STRUCT_RETURN (struct_addr, sp); | |
368 | ||
369 | /* Write the stack pointer. This is here because the statements above | |
370 | might fool with it. On SPARC, this write also stores the register | |
371 | window into the right place in the new stack frame, which otherwise | |
372 | wouldn't happen. (See write_inferior_registers in sparc-xdep.c.) */ | |
373 | write_register (SP_REGNUM, sp); | |
374 | ||
375 | /* Figure out the value returned by the function. */ | |
376 | { | |
377 | char retbuf[REGISTER_BYTES]; | |
378 | ||
379 | /* Execute the stack dummy routine, calling FUNCTION. | |
380 | When it is done, discard the empty frame | |
381 | after storing the contents of all regs into retbuf. */ | |
382 | run_stack_dummy (start_sp + CALL_DUMMY_START_OFFSET, retbuf); | |
383 | ||
384 | do_cleanups (old_chain); | |
385 | ||
386 | return value_being_returned (value_type, retbuf, struct_return); | |
387 | } | |
388 | } | |
389 | /* should return a value of some sort */ | |
390 | ||
391 | value | |
392 | vx_call_function (funcAddr, nargs, args, valueType) | |
393 | char *funcAddr; | |
394 | int nargs; | |
395 | value *args; | |
396 | struct type * valueType; | |
397 | { | |
398 | int i; | |
399 | func_call funcInfo; | |
400 | arg_value *argValue; | |
401 | enum clnt_stat status; | |
402 | register int len; | |
403 | arg_value funcReturn; | |
404 | value gdbValue; | |
405 | ||
406 | argValue = (arg_value *) xmalloc (nargs * sizeof (arg_value)); | |
407 | ||
408 | bzero (argValue, nargs * sizeof (arg_value)); | |
409 | bzero (&funcReturn, sizeof (funcReturn)); | |
410 | ||
411 | for (i = nargs - 1; i >= 0; i--) | |
412 | { | |
413 | len = TYPE_LENGTH (VALUE_TYPE (args [i])); | |
414 | ||
415 | switch (TYPE_CODE (VALUE_TYPE (args[i]))) | |
416 | { | |
417 | /* XXX put other types here. Where's CHAR, etc??? */ | |
418 | ||
419 | case TYPE_CODE_FLT: | |
420 | argValue[i].type = T_FLOAT; | |
421 | break; | |
422 | case TYPE_CODE_INT: | |
423 | case TYPE_CODE_PTR: | |
424 | case TYPE_CODE_ENUM: | |
425 | case TYPE_CODE_FUNC: | |
426 | argValue[i].type = T_INT; | |
427 | break; | |
428 | ||
429 | case TYPE_CODE_UNDEF: | |
430 | case TYPE_CODE_ARRAY: | |
431 | case TYPE_CODE_STRUCT: | |
432 | case TYPE_CODE_UNION: | |
433 | case TYPE_CODE_VOID: | |
434 | case TYPE_CODE_SET: | |
435 | case TYPE_CODE_RANGE: | |
436 | case TYPE_CODE_PASCAL_ARRAY: | |
437 | case TYPE_CODE_MEMBER: /* C++ */ | |
438 | case TYPE_CODE_METHOD: /* C++ */ | |
439 | case TYPE_CODE_REF: /* C++ */ | |
440 | default: | |
441 | error ("No corresponding VxWorks type for %d. CHECK IT OUT!!!\n", | |
442 | TYPE_CODE(VALUE_TYPE(args[i]))); | |
443 | } /* switch */ | |
444 | if (TYPE_CODE(VALUE_TYPE(args[i])) == TYPE_CODE_FUNC) | |
445 | argValue[i].arg_value_u.v_int = VALUE_ADDRESS(args[i]); | |
446 | else | |
447 | bcopy (VALUE_CONTENTS (args[i]), (char *) &argValue[i].arg_value_u, | |
448 | len); | |
449 | } | |
450 | ||
451 | /* XXX what should the type of this function addr be? | |
452 | * XXX Both in gdb and vxWorks | |
453 | */ | |
454 | funcInfo.func_addr = (int) funcAddr; | |
455 | funcInfo.args.args_len = nargs; | |
456 | funcInfo.args.args_val = argValue; | |
457 | ||
458 | status = net_clnt_call (VX_CALL_FUNC, xdr_func_call, (char *) &funcInfo, | |
459 | xdr_arg_value, &funcReturn); | |
460 | ||
461 | free ((char *) argValue); | |
462 | ||
463 | if (status == RPC_SUCCESS) | |
464 | { | |
465 | /* XXX this assumes that vxWorks ALWAYS returns an int, and that | |
466 | * XXX gdb isn't expecting anything more | |
467 | */ | |
468 | ||
469 | /******************* | |
470 | if (funcReturn.type == T_UNKNOWN) | |
471 | return YYYXXX...; | |
472 | *******************/ | |
473 | gdbValue = allocate_value (valueType); | |
474 | bcopy (&funcReturn.arg_value_u.v_int, VALUE_CONTENTS (gdbValue), | |
475 | sizeof (int)); | |
476 | return gdbValue; | |
477 | } | |
478 | else | |
479 | error (rpcerr); | |
480 | } | |
481 | #endif /* FIXME */ | |
482 | ||
483 | /* Start an inferior process and sets inferior_pid to its pid. | |
484 | EXEC_FILE is the file to run. | |
485 | ALLARGS is a string containing the arguments to the program. | |
486 | ENV is the environment vector to pass. | |
487 | Returns process id. Errors reported with error(). | |
488 | On VxWorks, we ignore exec_file. */ | |
489 | ||
490 | void | |
491 | vx_create_inferior (exec_file, args, env) | |
492 | char *exec_file; | |
493 | char *args; | |
494 | char **env; | |
495 | { | |
496 | enum clnt_stat status; | |
497 | arg_array passArgs; | |
498 | TASK_START taskStart; | |
499 | ||
500 | bzero ((char *) &passArgs, sizeof (passArgs)); | |
501 | bzero ((char *) &taskStart, sizeof (taskStart)); | |
502 | ||
503 | /* parse arguments, put them in passArgs */ | |
504 | ||
505 | parse_args (args, &passArgs); | |
506 | ||
507 | if (passArgs.arg_array_len == 0) | |
508 | error ("You must specify a function name to run, and arguments if any"); | |
509 | ||
510 | status = net_clnt_call (PROCESS_START, xdr_arg_array, &passArgs, | |
511 | xdr_TASK_START, &taskStart); | |
512 | ||
513 | if ((status != RPC_SUCCESS) || (taskStart.status == -1)) | |
514 | error ("Can't create process on remote target machine"); | |
515 | ||
516 | /* Save the name of the running function */ | |
517 | if (vx_running) | |
518 | free (vx_running); | |
519 | vx_running = savestring (passArgs.arg_array_val[0], | |
520 | strlen (passArgs.arg_array_val[0])); | |
521 | ||
522 | #ifdef CREATE_INFERIOR_HOOK | |
523 | CREATE_INFERIOR_HOOK (pid); | |
524 | #endif | |
525 | ||
526 | push_target (&vx_run_ops); | |
527 | inferior_pid = taskStart.pid; | |
528 | ||
529 | #if defined (START_INFERIOR_HOOK) | |
530 | START_INFERIOR_HOOK (); | |
531 | #endif | |
532 | ||
533 | /* We will get a trace trap after one instruction. | |
534 | Insert breakpoints and continue. */ | |
535 | ||
536 | init_wait_for_inferior (); | |
537 | ||
538 | /* Set up the "saved terminal modes" of the inferior | |
539 | based on what modes we are starting it with. */ | |
540 | target_terminal_init (); | |
541 | ||
542 | /* Install inferior's terminal modes. */ | |
543 | target_terminal_inferior (); | |
544 | ||
545 | /* remote_start(args); */ | |
546 | /* trap_expected = 0; */ | |
547 | stop_soon_quietly = 1; | |
548 | wait_for_inferior (); /* Get the task spawn event */ | |
549 | stop_soon_quietly = 0; | |
550 | ||
551 | /* insert_step_breakpoint (); FIXME, do we need this? */ | |
552 | proceed(-1, -1, 0); | |
553 | } | |
554 | ||
555 | /* Fill ARGSTRUCT in argc/argv form with the arguments from the | |
556 | argument string ARGSTRING. */ | |
557 | ||
558 | static void | |
559 | parse_args (arg_string, arg_struct) | |
560 | register char *arg_string; | |
561 | arg_array *arg_struct; | |
562 | { | |
563 | register int arg_count = 0; /* number of arguments */ | |
564 | register int arg_index = 0; | |
565 | register char *p0; | |
566 | ||
567 | bzero ((char *) arg_struct, sizeof (arg_array)); | |
568 | ||
569 | /* first count how many arguments there are */ | |
570 | ||
571 | p0 = arg_string; | |
572 | while (*p0 != '\0') | |
573 | { | |
574 | if (*(p0 = skip_white_space (p0)) == '\0') | |
575 | break; | |
576 | p0 = find_white_space (p0); | |
577 | arg_count++; | |
578 | } | |
579 | ||
580 | arg_struct->arg_array_len = arg_count; | |
581 | arg_struct->arg_array_val = (char **) xmalloc ((arg_count + 1) | |
582 | * sizeof (char *)); | |
583 | ||
584 | /* now copy argument strings into arg_struct. */ | |
585 | ||
586 | while (*(arg_string = skip_white_space (arg_string))) | |
587 | { | |
588 | p0 = find_white_space (arg_string); | |
589 | arg_struct->arg_array_val[arg_index++] = savestring (arg_string, | |
590 | p0 - arg_string); | |
591 | arg_string = p0; | |
592 | } | |
593 | ||
594 | arg_struct->arg_array_val[arg_count] = NULL; | |
595 | } | |
596 | ||
597 | /* Advance a string pointer across whitespace and return a pointer | |
598 | to the first non-white character. */ | |
599 | ||
600 | static char * | |
601 | skip_white_space (p) | |
602 | register char *p; | |
603 | { | |
604 | while (*p == ' ' || *p == '\t') | |
605 | p++; | |
606 | return p; | |
607 | } | |
608 | ||
609 | /* Search for the first unquoted whitespace character in a string. | |
610 | Returns a pointer to the character, or to the null terminator | |
611 | if no whitespace is found. */ | |
612 | ||
613 | static char * | |
614 | find_white_space (p) | |
615 | register char *p; | |
616 | { | |
617 | register int c; | |
618 | ||
619 | while ((c = *p) != ' ' && c != '\t' && c) | |
620 | { | |
621 | if (c == '\'' || c == '"') | |
622 | { | |
623 | while (*++p != c && *p) | |
624 | { | |
625 | if (*p == '\\') | |
626 | p++; | |
627 | } | |
628 | if (!*p) | |
629 | break; | |
630 | } | |
631 | p++; | |
632 | } | |
633 | return p; | |
634 | } | |
635 | ||
636 | /* Poll the VxWorks target system for an event related | |
637 | to the debugged task. | |
638 | Returns -1 if remote wait failed, task status otherwise. */ | |
639 | ||
640 | int | |
641 | net_wait (pEvent) | |
642 | RDB_EVENT *pEvent; | |
643 | { | |
644 | int pid; | |
645 | enum clnt_stat status; | |
646 | ||
647 | bzero ((char *) pEvent, sizeof (RDB_EVENT)); | |
648 | ||
649 | pid = inferior_pid; | |
650 | status = net_clnt_call (PROCESS_WAIT, xdr_int, &pid, xdr_RDB_EVENT, pEvent); | |
651 | ||
652 | return (status == RPC_SUCCESS)? pEvent->status: -1; | |
653 | } | |
654 | ||
655 | /* Suspend the remote task. | |
656 | Returns -1 if suspend fails on target system, 0 otherwise. */ | |
657 | ||
658 | int | |
659 | net_quit () | |
660 | { | |
661 | int pid; | |
662 | int quit_status; | |
663 | enum clnt_stat status; | |
664 | ||
665 | quit_status = 0; | |
666 | ||
667 | /* don't let rdbTask suspend itself by passing a pid of 0 */ | |
668 | ||
669 | if ((pid = inferior_pid) == 0) | |
670 | return -1; | |
671 | ||
672 | status = net_clnt_call (VX_TASK_SUSPEND, xdr_int, &pid, xdr_int, | |
673 | &quit_status); | |
674 | ||
675 | return (status == RPC_SUCCESS)? quit_status: -1; | |
676 | } | |
677 | ||
678 | /* Read a register or registers from the remote system. */ | |
679 | ||
680 | int | |
681 | vx_read_register (regno) | |
682 | int regno; | |
683 | { | |
684 | int status; | |
685 | Rptrace ptrace_in; | |
686 | Ptrace_return ptrace_out; | |
687 | struct regs inferior_registers; | |
688 | struct fp_status inferior_fp_registers; | |
689 | extern char registers[]; | |
690 | ||
691 | bzero ((char *) &ptrace_in, sizeof (ptrace_in)); | |
692 | bzero ((char *) &ptrace_out, sizeof (ptrace_out)); | |
693 | ||
694 | /* FIXME, eventually only get the ones we need. */ | |
695 | registers_fetched (); | |
696 | ||
697 | ptrace_in.pid = inferior_pid; | |
698 | ptrace_out.info.more_data = (caddr_t) &inferior_registers; | |
699 | status = net_ptrace_clnt_call (PTRACE_GETREGS, &ptrace_in, &ptrace_out); | |
700 | if (status) | |
701 | error (rpcerr); | |
702 | if (ptrace_out.status == -1) | |
703 | { | |
704 | errno = ptrace_out.errno; | |
705 | return -1; | |
706 | } | |
707 | ||
708 | #ifdef I80960 | |
709 | #else /* I80960 */ | |
710 | bcopy (&inferior_registers, registers, 16 * 4); | |
711 | *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps; | |
712 | *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc; | |
713 | ||
714 | if (target_has_fp) | |
715 | { | |
716 | ptrace_in.pid = inferior_pid; | |
717 | ptrace_out.info.more_data = (caddr_t) &inferior_fp_registers; | |
718 | status = net_ptrace_clnt_call (PTRACE_GETFPREGS, &ptrace_in, &ptrace_out); | |
719 | if (status) | |
720 | error (rpcerr); | |
721 | if (ptrace_out.status == -1) | |
722 | { | |
723 | errno = ptrace_out.errno; | |
724 | return -1; | |
725 | } | |
726 | ||
727 | bcopy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)], | |
728 | sizeof inferior_fp_registers.fps_regs); | |
729 | bcopy (&inferior_fp_registers.fps_control, | |
730 | ®isters[REGISTER_BYTE (FPC_REGNUM)], | |
731 | sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs); | |
732 | } | |
733 | else | |
734 | { | |
735 | bzero (®isters[REGISTER_BYTE (FP0_REGNUM)], | |
736 | sizeof inferior_fp_registers.fps_regs); | |
737 | bzero (®isters[REGISTER_BYTE (FPC_REGNUM)], | |
738 | sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs); | |
739 | } | |
740 | #endif | |
741 | return 0; | |
742 | } | |
743 | ||
744 | /* Prepare to store registers. Since we will store all of them, | |
745 | read out their current values now. */ | |
746 | ||
747 | void | |
748 | vx_prepare_to_store () | |
749 | { | |
750 | vx_read_register (-1); | |
751 | } | |
752 | ||
753 | ||
754 | /* Store our register values back into the inferior. | |
755 | If REGNO is -1, do this for all registers. | |
756 | Otherwise, REGNO specifies which register (so we can save time). */ | |
757 | /* FIXME, look at REGNO to save time here */ | |
758 | ||
759 | vx_write_register (regno) | |
760 | int regno; | |
761 | { | |
762 | struct regs inferior_registers; | |
763 | struct fp_status inferior_fp_registers; | |
764 | extern char registers[]; | |
765 | int status; | |
766 | Rptrace ptrace_in; | |
767 | Ptrace_return ptrace_out; | |
768 | ||
769 | bzero ((char *) &ptrace_in, sizeof (ptrace_in)); | |
770 | bzero ((char *) &ptrace_out, sizeof (ptrace_out)); | |
771 | ||
772 | bcopy (registers, &inferior_registers, 16 * 4); | |
773 | inferior_registers.r_ps = *(int *)®isters[REGISTER_BYTE (PS_REGNUM)]; | |
774 | inferior_registers.r_pc = *(int *)®isters[REGISTER_BYTE (PC_REGNUM)]; | |
775 | ptrace_in.pid = inferior_pid; | |
776 | ptrace_in.info.ttype = REGS; | |
777 | ptrace_in.info.more_data = (caddr_t) &inferior_registers; | |
778 | ||
779 | /* XXX change second param to be a proc number */ | |
780 | status = net_ptrace_clnt_call (PTRACE_SETREGS, &ptrace_in, &ptrace_out); | |
781 | if (status) | |
782 | error (rpcerr); | |
783 | if (ptrace_out.status == -1) | |
784 | { | |
785 | errno = ptrace_out.errno; | |
786 | return -1; | |
787 | } | |
788 | ||
789 | if (target_has_fp) | |
790 | { | |
791 | bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers, | |
792 | sizeof inferior_fp_registers.fps_regs); | |
793 | bcopy (®isters[REGISTER_BYTE (FPC_REGNUM)], | |
794 | &inferior_fp_registers.fps_control, | |
795 | sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs); | |
796 | ||
797 | ptrace_in.pid = inferior_pid; | |
798 | ptrace_in.info.ttype = FPREGS; | |
799 | ptrace_in.info.more_data = (caddr_t) &inferior_fp_registers; | |
800 | ||
801 | status = net_ptrace_clnt_call (PTRACE_SETFPREGS, &ptrace_in, &ptrace_out); | |
802 | if (status) | |
803 | error (rpcerr); | |
804 | if (ptrace_out.status == -1) | |
805 | { | |
806 | errno = ptrace_out.errno; | |
807 | return -1; | |
808 | } | |
809 | } | |
810 | return 0; | |
811 | } | |
812 | ||
813 | /* Copy LEN bytes to or from remote inferior's memory starting at MEMADDR | |
814 | to debugger memory starting at MYADDR. WRITE is true if writing to the | |
815 | inferior. | |
816 | Result is the number of bytes written or read (zero if error). The | |
817 | protocol allows us to return a negative count, indicating that we can't | |
818 | handle the current address but can handle one N bytes further, but | |
819 | vxworks doesn't give us that information. */ | |
820 | ||
821 | int | |
822 | vx_xfer_memory (memaddr, myaddr, len, write) | |
823 | CORE_ADDR memaddr; | |
824 | char *myaddr; | |
825 | int len; | |
826 | { | |
827 | int status; | |
828 | Rptrace ptrace_in; | |
829 | Ptrace_return ptrace_out; | |
830 | C_bytes data; | |
831 | ||
832 | bzero ((char *) &ptrace_in, sizeof (ptrace_in)); | |
833 | bzero ((char *) &ptrace_out, sizeof (ptrace_out)); | |
834 | ||
835 | ptrace_in.pid = inferior_pid; /* XXX pid unnecessary for READDATA */ | |
836 | ptrace_in.addr = (int) memaddr; /* Where from */ | |
837 | ptrace_in.data = len; /* How many bytes */ | |
838 | ||
839 | if (write) | |
840 | { | |
841 | ptrace_in.info.ttype = DATA; | |
842 | ptrace_in.info.more_data = (caddr_t) &data; | |
843 | ||
844 | data.bytes = (caddr_t) myaddr; /* Where from */ | |
845 | data.len = len; /* How many bytes (again, for XDR) */ | |
846 | ||
847 | /* XXX change second param to be a proc number */ | |
848 | status = net_ptrace_clnt_call (PTRACE_WRITEDATA, &ptrace_in, &ptrace_out); | |
849 | } | |
850 | else | |
851 | { | |
852 | ptrace_out.info.more_data = (caddr_t) &data; | |
853 | data.bytes = myaddr; /* Where to */ | |
854 | data.len = len; /* How many (again, for XDR) */ | |
855 | ||
856 | /* XXX change second param to be a proc number */ | |
857 | status = net_ptrace_clnt_call (PTRACE_READDATA, &ptrace_in, &ptrace_out); | |
858 | } | |
859 | ||
860 | if (status) | |
861 | error (rpcerr); | |
862 | if (ptrace_out.status == -1) | |
863 | { | |
864 | return 0; /* No bytes moved */ | |
865 | } | |
866 | return len; /* Moved *all* the bytes */ | |
867 | } | |
868 | ||
869 | void | |
870 | vx_files_info () | |
871 | { | |
872 | printf ("\tAttached to host `%s'", vx_host); | |
873 | printf (", which has %sfloating point", target_has_fp? "": "no "); | |
874 | printf (".\n"); | |
875 | } | |
876 | ||
877 | void | |
878 | vx_run_files_info () | |
879 | { | |
880 | printf ("\tRunning VxWorks process 0x%x, function `%s'.\n", | |
881 | inferior_pid, vx_running); | |
882 | } | |
883 | ||
884 | void | |
885 | vx_resume (step, siggnal) | |
886 | int step; | |
887 | int siggnal; | |
888 | { | |
889 | int status; | |
890 | Rptrace ptrace_in; | |
891 | Ptrace_return ptrace_out; | |
892 | ||
893 | if (siggnal != 0) | |
894 | error ("Cannot send signals to VxWorks processes"); | |
895 | ||
896 | bzero ((char *) &ptrace_in, sizeof (ptrace_in)); | |
897 | bzero ((char *) &ptrace_out, sizeof (ptrace_out)); | |
898 | ||
899 | ptrace_in.pid = inferior_pid; | |
900 | ptrace_in.addr = 1; /* Target side insists on this, or it panics. */ | |
901 | ||
902 | /* XXX change second param to be a proc number */ | |
903 | status = net_ptrace_clnt_call (step? PTRACE_SINGLESTEP: PTRACE_CONT, | |
904 | &ptrace_in, &ptrace_out); | |
905 | if (status) | |
906 | error (rpcerr); | |
907 | if (ptrace_out.status == -1) | |
908 | { | |
909 | errno = ptrace_out.errno; | |
910 | perror_with_name ("Resuming remote process"); | |
911 | } | |
912 | } | |
913 | ||
914 | void | |
915 | vx_mourn_inferior () | |
916 | { | |
917 | pop_target (); /* Pop back to no-child state */ | |
918 | generic_mourn_inferior (); | |
919 | } | |
920 | ||
921 | \f | |
922 | /* This function allows the addition of incrementally linked object files. */ | |
923 | ||
924 | void | |
925 | vx_add_file_command (arg_string, from_tty) | |
926 | char* arg_string; | |
927 | int from_tty; | |
928 | { | |
929 | CORE_ADDR text_addr; | |
930 | CORE_ADDR data_addr; | |
931 | CORE_ADDR bss_addr; | |
932 | ||
933 | if (arg_string == 0) | |
934 | error ("add-file takes a file name in VxWorks"); | |
935 | ||
936 | arg_string = tilde_expand (arg_string); | |
937 | make_cleanup (free, arg_string); | |
938 | ||
939 | dont_repeat (); | |
940 | ||
941 | if (net_load (arg_string, &text_addr, &data_addr, &bss_addr) == -1) | |
942 | error ("Load failed on target machine"); | |
943 | ||
944 | /* FIXME, for now we ignore data_addr and bss_addr. */ | |
945 | symbol_file_add (arg_string, from_tty, text_addr, 0); | |
946 | } | |
947 | ||
948 | #ifdef FIXME /* Not ready for prime time */ | |
949 | /* Single step the target program at the source or machine level. | |
950 | Takes an error exit if rpc fails. | |
951 | Returns -1 if remote single-step operation fails, else 0. */ | |
952 | ||
953 | static int | |
954 | net_step () | |
955 | { | |
956 | enum clnt_stat status; | |
957 | int step_status; | |
958 | SOURCE_STEP source_step; | |
959 | ||
960 | source_step.taskId = inferior_pid; | |
961 | ||
962 | if (step_range_end) | |
963 | { | |
964 | source_step.startAddr = step_range_start; | |
965 | source_step.endAddr = step_range_end; | |
966 | } | |
967 | else | |
968 | { | |
969 | source_step.startAddr = 0; | |
970 | source_step.endAddr = 0; | |
971 | } | |
972 | ||
973 | status = net_clnt_call (VX_SOURCE_STEP, xdr_SOURCE_STEP, &source_step, | |
974 | xdr_int, &step_status); | |
975 | ||
976 | if (status == RPC_SUCCESS) | |
977 | return step_status; | |
978 | else | |
979 | error (rpcerr); | |
980 | } | |
981 | #endif | |
982 | ||
983 | /* Emulate ptrace using RPC calls to the VxWorks target system. | |
984 | Returns nonzero (-1) if RPC status to VxWorks is bad, 0 otherwise. */ | |
985 | ||
986 | static int | |
987 | net_ptrace_clnt_call (request, pPtraceIn, pPtraceOut) | |
988 | enum ptracereq request; | |
989 | Rptrace *pPtraceIn; | |
990 | Ptrace_return *pPtraceOut; | |
991 | { | |
992 | enum clnt_stat status; | |
993 | ||
994 | status = net_clnt_call (request, xdr_rptrace, pPtraceIn, xdr_ptrace_return, | |
995 | pPtraceOut); | |
996 | ||
997 | if (status != RPC_SUCCESS) | |
998 | return -1; | |
999 | ||
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | /* Query the target for the name of the file from which VxWorks was | |
1004 | booted. pBootFile is the address of a pointer to the buffer to | |
1005 | receive the file name; if the pointer pointed to by pBootFile is | |
1006 | NULL, memory for the buffer will be allocated by XDR. | |
1007 | Returns -1 if rpc failed, 0 otherwise. */ | |
1008 | ||
1009 | int | |
1010 | net_get_boot_file (pBootFile) | |
1011 | char **pBootFile; | |
1012 | { | |
1013 | enum clnt_stat status; | |
1014 | ||
1015 | status = net_clnt_call (VX_BOOT_FILE_INQ, xdr_void, (char *) 0, | |
1016 | xdr_wrapstring, pBootFile); | |
1017 | return (status == RPC_SUCCESS) ? 0 : -1; | |
1018 | } | |
1019 | ||
1020 | /* Fetch a list of loaded object modules from the VxWorks target. | |
1021 | Returns -1 if rpc failed, 0 otherwise | |
1022 | There's no way to check if the returned loadTable is correct. | |
1023 | VxWorks doesn't check it. */ | |
1024 | ||
1025 | int | |
1026 | net_get_symbols (pLoadTable) | |
1027 | ldtabl *pLoadTable; /* return pointer to ldtabl here */ | |
1028 | { | |
1029 | enum clnt_stat status; | |
1030 | ||
1031 | bzero ((char *) pLoadTable, sizeof (struct ldtabl)); | |
1032 | ||
1033 | status = net_clnt_call (VX_STATE_INQ, xdr_void, 0, xdr_ldtabl, pLoadTable); | |
1034 | return (status == RPC_SUCCESS) ? 0 : -1; | |
1035 | } | |
1036 | ||
1037 | /* Look up a symbol in the VxWorks target's symbol table. | |
1038 | Returns status of symbol read on target side (0=success, -1=fail) | |
1039 | Returns -1 and complain()s if rpc fails. */ | |
1040 | ||
1041 | struct complaint cant_contact_target = | |
1042 | {"Lost contact with VxWorks target", 0, 0}; | |
1043 | ||
1044 | int | |
1045 | vx_lookup_symbol (name, pAddr) | |
1046 | char *name; /* symbol name */ | |
1047 | CORE_ADDR *pAddr; | |
1048 | { | |
1049 | enum clnt_stat status; | |
1050 | SYMBOL_ADDR symbolAddr; | |
1051 | ||
1052 | *pAddr = 0; | |
1053 | bzero ((char *) &symbolAddr, sizeof (symbolAddr)); | |
1054 | ||
1055 | status = net_clnt_call (VX_SYMBOL_INQ, xdr_wrapstring, &name, | |
1056 | xdr_SYMBOL_ADDR, &symbolAddr); | |
1057 | if (status != RPC_SUCCESS) { | |
1058 | complain (&cant_contact_target, 0); | |
1059 | return -1; | |
1060 | } | |
1061 | ||
1062 | *pAddr = symbolAddr.addr; | |
1063 | return symbolAddr.status; | |
1064 | } | |
1065 | ||
1066 | /* Check to see if the VxWorks target has a floating point coprocessor. | |
1067 | Returns 1 if target has floating point processor, 0 otherwise. | |
1068 | Calls error() if rpc fails. */ | |
1069 | ||
1070 | int | |
1071 | net_check_for_fp () | |
1072 | { | |
1073 | enum clnt_stat status; | |
1074 | bool_t fp = 0; /* true if fp processor is present on target board */ | |
1075 | ||
1076 | status = net_clnt_call (VX_FP_INQUIRE, xdr_void, 0, xdr_bool, &fp); | |
1077 | if (status != RPC_SUCCESS) | |
1078 | error (rpcerr); | |
1079 | ||
1080 | return (int) fp; | |
1081 | } | |
1082 | ||
1083 | /* Establish an RPC connection with the VxWorks target system. | |
1084 | Calls error () if unable to establish connection. */ | |
1085 | ||
1086 | void | |
1087 | net_connect (host) | |
1088 | char *host; | |
1089 | { | |
1090 | struct sockaddr_in destAddr; | |
1091 | struct hostent *destHost; | |
1092 | ||
1093 | /* get the internet address for the given host */ | |
1094 | ||
1095 | if ((destHost = (struct hostent *) gethostbyname (host)) == NULL) | |
1096 | error ("Invalid hostname. Couldn't attach remote target."); | |
1097 | ||
1098 | bzero (&destAddr, sizeof (destAddr)); | |
1099 | ||
1100 | destAddr.sin_addr.s_addr = * (u_long *) destHost->h_addr; | |
1101 | destAddr.sin_family = AF_INET; | |
1102 | destAddr.sin_port = 0; /* set to actual port that remote | |
1103 | ptrace is listening on. */ | |
1104 | ||
1105 | /* Create a tcp client transport on which to issue | |
1106 | calls to the remote ptrace server. */ | |
1107 | ||
1108 | ptraceSock = RPC_ANYSOCK; | |
1109 | pClient = clnttcp_create (&destAddr, RDBPROG, RDBVERS, &ptraceSock, 0, 0); | |
1110 | /* FIXME, here is where we deal with different version numbers of the proto */ | |
1111 | ||
1112 | if (pClient == NULL) | |
1113 | { | |
1114 | clnt_pcreateerror ("\tnet_connect"); | |
1115 | error ("Couldn't connect to remote target."); | |
1116 | } | |
1117 | } | |
1118 | \f | |
1119 | /* Sleep for the specified number of milliseconds | |
1120 | * (assumed to be less than 1000). | |
1121 | * If select () is interrupted, returns immediately; | |
1122 | * takes an error exit if select () fails for some other reason. | |
1123 | */ | |
1124 | ||
1125 | static void | |
1126 | sleep_ms (ms) | |
1127 | long ms; | |
1128 | { | |
1129 | struct timeval select_timeout; | |
1130 | int status; | |
1131 | ||
1132 | select_timeout.tv_sec = 0; | |
1133 | select_timeout.tv_usec = ms * 1000; | |
1134 | ||
1135 | status = select (0, (fd_set *) 0, (fd_set *) 0, (fd_set *) 0, &select_timeout); | |
1136 | ||
1137 | if (status < 0 && errno != EINTR) | |
1138 | perror_with_name ("select"); | |
1139 | } | |
1140 | ||
1141 | /* Wait for control to return from inferior to debugger. | |
1142 | If inferior gets a signal, we may decide to start it up again | |
1143 | instead of returning. That is why there is a loop in this function. | |
1144 | When this function actually returns it means the inferior | |
1145 | should be left stopped and GDB should read more commands. */ | |
1146 | ||
1147 | /* For network debugging with VxWorks. | |
1148 | * VxWorks knows when tasks hit breakpoints, receive signals, exit, etc, | |
1149 | * so vx_wait() receives this information directly from | |
1150 | * VxWorks instead of trying to figure out what happenned via a wait() call. | |
1151 | */ | |
1152 | ||
1153 | static int | |
1154 | vx_wait (status) | |
1155 | int *status; | |
1156 | { | |
1157 | register int pid; | |
1158 | WAITTYPE w; | |
1159 | RDB_EVENT rdbEvent; | |
1160 | int quit_failed; | |
1161 | ||
1162 | do | |
1163 | { | |
1164 | /* If CTRL-C is hit during this loop, | |
1165 | suspend the inferior process. */ | |
1166 | ||
1167 | quit_failed = 0; | |
1168 | if (quit_flag) | |
1169 | { | |
1170 | quit_failed = (net_quit () == -1); | |
1171 | quit_flag = 0; | |
1172 | } | |
1173 | ||
1174 | /* If a net_quit () or net_wait () call has failed, | |
1175 | allow the user to break the connection with the target. | |
1176 | We can't simply error () out of this loop, since the | |
1177 | data structures representing the state of the inferior | |
1178 | are in an inconsistent state. */ | |
1179 | ||
1180 | if (quit_failed || net_wait (&rdbEvent) == -1) | |
1181 | { | |
1182 | terminal_ours (); | |
1183 | if (query ("Can't %s. Disconnect from target system? ", | |
1184 | (quit_failed) ? "suspend remote task" | |
1185 | : "get status of remote task")) | |
1186 | { | |
1187 | target_mourn_inferior(); | |
1188 | error ("Use the \"target\" command to reconnect."); | |
1189 | } | |
1190 | else | |
1191 | { | |
1192 | terminal_inferior (); | |
1193 | continue; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | ||
1198 | if (quit_failed || net_wait (&rdbEvent) == -1) | |
1199 | { | |
1200 | error ("Wait on remote target failed"); | |
1201 | } | |
1202 | ||
1203 | pid = rdbEvent.taskId; | |
1204 | if (pid == 0) | |
1205 | { | |
1206 | sleep_ms (200); /* FIXME Don't kill the network too badly */ | |
1207 | } | |
1208 | else if (pid != inferior_pid) | |
1209 | fatal ("Bad pid for debugged task: 0x%x\n", pid); | |
1210 | } while (pid == 0); | |
1211 | ||
1212 | /* FIXME, eventually do more then SIGTRAP on everything... */ | |
1213 | switch (rdbEvent.eventType) | |
1214 | { | |
1215 | case EVENT_EXIT: | |
1216 | WSETEXIT (w, 0); | |
1217 | /* FIXME is it possible to distinguish between a | |
1218 | XXX normal vs abnormal exit in VxWorks? */ | |
1219 | break; | |
1220 | ||
1221 | case EVENT_START: | |
1222 | WSETSTOP (w, SIGTRAP); | |
1223 | break; | |
1224 | ||
1225 | case EVENT_STOP: | |
1226 | WSETSTOP (w, SIGTRAP); | |
1227 | /* XXX was it stopped by a signal? act accordingly */ | |
1228 | break; | |
1229 | ||
1230 | case EVENT_BREAK: | |
1231 | /* Expecting a trace trap. Stop the inferior and | |
1232 | * return silently when it happens. */ | |
1233 | WSETSTOP (w, SIGTRAP); | |
1234 | break; | |
1235 | ||
1236 | case EVENT_SUSPEND: | |
1237 | target_terminal_ours_for_output (); | |
1238 | printf ("\nRemote task suspended\n"); /* FIXME */ | |
1239 | fflush (stdout); | |
1240 | WSETSTOP (w, SIGTRAP); | |
1241 | break; | |
1242 | ||
1243 | case EVENT_SIGNAL: | |
1244 | /* The target is not running Unix, and its | |
1245 | faults/traces do not map nicely into Unix signals. | |
1246 | Make sure they do not get confused with Unix signals | |
1247 | by numbering them with values higher than the highest | |
1248 | legal Unix signal. code in the arch-dependent PRINT_RANDOM_SIGNAL | |
1249 | routine will interpret the value for wait_for_inferior. */ | |
1250 | WSETSTOP (w, rdbEvent.sigType + NSIG); | |
1251 | break; | |
1252 | } /* switch */ | |
1253 | *status = *(int *)&w; /* Grumble union wait crap Grumble */ | |
1254 | return pid; | |
1255 | } | |
1256 | \f | |
1257 | static int | |
1258 | symbol_stub (arg) | |
1259 | int arg; | |
1260 | { | |
1261 | char *bootFile = (char *)arg; | |
1262 | symbol_file_command (bootFile, 0); | |
1263 | return 1; | |
1264 | } | |
1265 | ||
1266 | static int | |
1267 | add_symbol_stub (arg) | |
1268 | int arg; | |
1269 | { | |
1270 | struct ldfile *pLoadFile = (struct ldfile *)arg; | |
1271 | ||
1272 | symbol_file_add (pLoadFile->name, 0, pLoadFile->txt_addr, 0); | |
1273 | return 1; | |
1274 | } | |
1275 | /* Target command for VxWorks target systems. | |
1276 | ||
1277 | Used in vxgdb. Takes the name of a remote target machine | |
1278 | running vxWorks and connects to it to initialize remote network | |
1279 | debugging. */ | |
1280 | ||
1281 | static void | |
1282 | vx_open (args, from_tty) | |
1283 | char *args; | |
1284 | int from_tty; | |
1285 | { | |
1286 | extern int close (); | |
1287 | char *bootFile; | |
1288 | extern char *source_path; | |
1289 | struct ldtabl loadTable; | |
1290 | struct ldfile *pLoadFile; | |
1291 | int i; | |
1292 | extern CLIENT *pClient; | |
1293 | ||
1294 | if (!args) | |
1295 | error_no_arg ("target machine name"); | |
1296 | ||
70dcc196 JK |
1297 | target_preopen (); |
1298 | ||
07d021a6 JG |
1299 | printf ("Attaching remote machine across net...\n"); |
1300 | fflush (stdout); | |
1301 | ||
1302 | /* Allow the user to kill the connect attempt by typing ^C. | |
1303 | Wait until the call to target_has_fp () completes before | |
1304 | disallowing an immediate quit, since even if net_connect () | |
1305 | is successful, the remote debug server might be hung. */ | |
1306 | ||
1307 | immediate_quit++; | |
1308 | ||
1309 | net_connect (args); | |
1310 | target_has_fp = net_check_for_fp (); | |
1311 | printf_filtered ("Connected to %s\n", args); | |
1312 | ||
1313 | immediate_quit--; | |
1314 | ||
1315 | push_target (&vx_ops); | |
1316 | ||
1317 | /* Save a copy of the target host's name. */ | |
1318 | if (vx_host) | |
1319 | free (vx_host); | |
1320 | vx_host = savestring (args, strlen (args)); | |
1321 | ||
1322 | /* Find out the name of the file from which the target was booted | |
1323 | and load its symbol table. */ | |
1324 | ||
1325 | bootFile = NULL; | |
1326 | if (!net_get_boot_file (&bootFile)) | |
1327 | { | |
1328 | if (*bootFile) { | |
1329 | printf_filtered ("%s: ", bootFile); | |
1330 | if (catch_errors (symbol_stub, (int)bootFile, | |
1331 | "Error reading symbols from boot file")) | |
1332 | puts_filtered ("ok\n"); | |
1333 | } else if (from_tty) | |
1334 | printf ("VxWorks kernel symbols not loaded.\n"); | |
1335 | } | |
1336 | else | |
1337 | error ("Can't retrieve boot file name from target machine."); | |
1338 | ||
1339 | clnt_freeres (pClient, xdr_wrapstring, &bootFile); | |
1340 | ||
1341 | if (net_get_symbols (&loadTable) != 0) | |
1342 | error ("Can't read loaded modules from target machine"); | |
1343 | ||
1344 | i = 0-1; | |
1345 | while (++i < loadTable.tbl_size) | |
1346 | { | |
1347 | QUIT; /* FIXME, avoids clnt_freeres below: mem leak */ | |
1348 | pLoadFile = &loadTable.tbl_ent [i]; | |
1349 | #ifdef WRS_ORIG | |
1350 | { | |
1351 | register int desc; | |
1352 | struct cleanup *old_chain; | |
1353 | char *fullname = NULL; | |
1354 | ||
1355 | desc = openp (source_path, 0, pLoadFile->name, O_RDONLY, 0, &fullname); | |
1356 | if (desc < 0) | |
1357 | perror_with_name (pLoadFile->name); | |
1358 | old_chain = make_cleanup (close, desc); | |
1359 | add_file_at_addr (fullname, desc, pLoadFile->txt_addr, pLoadFile->data_addr, | |
1360 | pLoadFile->bss_addr); | |
1361 | do_cleanups (old_chain); | |
1362 | } | |
1363 | #else | |
1364 | /* Botches, FIXME: | |
1365 | (1) Searches the PATH, not the source path. | |
1366 | (2) data and bss are assumed to be at the usual offsets from text. */ | |
1367 | catch_errors (add_symbol_stub, (int)pLoadFile, | |
1368 | "Error in reading symbols from loaded module."); | |
1369 | #endif | |
1370 | } | |
1371 | ||
1372 | clnt_freeres (pClient, xdr_ldtabl, &loadTable); | |
1373 | ||
1374 | if (from_tty) | |
1375 | { | |
1376 | puts_filtered ("Success!\n"); | |
1377 | } | |
1378 | } | |
1379 | \f | |
1380 | /* Cross-net conversion of floats to and from extended form. | |
1381 | (This is needed because different target machines have different | |
1382 | extended floating point formats.) */ | |
1383 | ||
1384 | /* Convert from an extended float to a double. | |
1385 | ||
1386 | The extended float is stored as raw data pointed to by FROM. | |
1387 | Return the converted value as raw data in the double pointed to by TO. | |
1388 | */ | |
1389 | ||
1390 | static void | |
1391 | vx_convert_to_virtual (regno, from, to) | |
1392 | int regno; | |
1393 | char *from; | |
1394 | char *to; | |
1395 | { | |
1396 | enum clnt_stat status; | |
1397 | ext_fp from_ext_fp; | |
1398 | double to_double; | |
1399 | ||
1400 | if (REGISTER_CONVERTIBLE (regno)) | |
1401 | { | |
1402 | if (!target_has_fp) { | |
1403 | *(double *)to = 0.0; /* Skip the trouble if no float anyway */ | |
1404 | return; | |
1405 | } | |
1406 | bcopy (from, (char *) &from_ext_fp, sizeof (from_ext_fp)); | |
1407 | bzero ((char *) &to_double, sizeof (to_double)); | |
1408 | ||
1409 | status = net_clnt_call (VX_CONV_FROM_68881, xdr_ext_fp, &from_ext_fp, | |
1410 | xdr_double, &to_double); | |
1411 | if (status == RPC_SUCCESS) | |
1412 | bcopy ((char *) &to_double, to, sizeof (to_double)); | |
1413 | else | |
1414 | error (rpcerr); | |
1415 | } | |
1416 | else | |
1417 | bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno)); | |
1418 | } | |
1419 | ||
1420 | ||
1421 | /* The converse: convert from a double to an extended float. | |
1422 | ||
1423 | The double is stored as raw data pointed to by FROM. | |
1424 | Return the converted value as raw data in the extended | |
1425 | float pointed to by TO. | |
1426 | */ | |
1427 | ||
1428 | static void | |
1429 | vx_convert_from_virtual (regno, from, to) | |
1430 | int regno; | |
1431 | char *from; | |
1432 | char *to; | |
1433 | { | |
1434 | enum clnt_stat status; | |
1435 | ext_fp to_ext_fp; | |
1436 | double from_double; | |
1437 | ||
1438 | if (REGISTER_CONVERTIBLE (regno)) | |
1439 | { | |
1440 | if (!target_has_fp) { | |
1441 | bzero (to, REGISTER_RAW_SIZE (FP0_REGNUM)); /* Shrug */ | |
1442 | return; | |
1443 | } | |
1444 | bcopy (from, (char *) &from_double, sizeof (from_double)); | |
1445 | bzero ((char *) &to_ext_fp, sizeof (to_ext_fp)); | |
1446 | ||
1447 | status = net_clnt_call (VX_CONV_TO_68881, xdr_double, &from_double, | |
1448 | xdr_ext_fp, &to_ext_fp); | |
1449 | if (status == RPC_SUCCESS) | |
1450 | bcopy ((char *) &to_ext_fp, to, sizeof (to_ext_fp)); | |
1451 | else | |
1452 | error (rpcerr); | |
1453 | } | |
1454 | else | |
1455 | bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno)); | |
1456 | } | |
1457 | \f | |
1458 | /* Make an RPC call to the VxWorks target. | |
1459 | Returns RPC status. */ | |
1460 | ||
1461 | static enum clnt_stat | |
1462 | net_clnt_call (procNum, inProc, in, outProc, out) | |
1463 | enum ptracereq procNum; | |
1464 | xdrproc_t inProc; | |
1465 | char *in; | |
1466 | xdrproc_t outProc; | |
1467 | char *out; | |
1468 | { | |
1469 | enum clnt_stat status; | |
1470 | ||
1471 | status = clnt_call (pClient, procNum, inProc, in, outProc, out, rpcTimeout); | |
1472 | ||
1473 | if (status != RPC_SUCCESS) | |
1474 | clnt_perrno (status); | |
1475 | ||
1476 | return status; | |
1477 | } | |
1478 | ||
70dcc196 JK |
1479 | /* A vxprocess target should be started via "run" not "target". */ |
1480 | /*ARGSUSED*/ | |
1481 | static void | |
1482 | vx_proc_open (name, from_tty) | |
1483 | char *name; | |
1484 | int from_tty; | |
1485 | { | |
1486 | error ("Use the \"run\" command to start a VxWorks process."); | |
1487 | } | |
1488 | ||
07d021a6 JG |
1489 | |
1490 | /* Target ops structure for accessing memory and such over the net */ | |
1491 | ||
1492 | struct target_ops vx_ops = { | |
1493 | "vxworks", "VxWorks target memory via RPC over TCP/IP", | |
70dcc196 JK |
1494 | "Use VxWorks target memory. \n\ |
1495 | Specify the name of the machine to connect to.", | |
07d021a6 JG |
1496 | vx_open, 0, /* vx_detach, */ |
1497 | 0, 0, /* resume, wait */ | |
1498 | 0, 0, /* read_reg, write_reg */ | |
1499 | 0, vx_convert_to_virtual, vx_convert_from_virtual, /* prep_to_store, */ | |
1500 | vx_xfer_memory, vx_files_info, | |
1501 | 0, 0, /* insert_breakpoint, remove_breakpoint */ | |
1502 | 0, 0, 0, 0, 0, /* terminal stuff */ | |
1503 | 0, /* vx_kill, */ | |
1504 | vx_add_file_command, | |
07d021a6 JG |
1505 | vx_lookup_symbol, |
1506 | vx_create_inferior, 0, /* mourn_inferior */ | |
1507 | core_stratum, 0, /* next */ | |
1508 | 1, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */ | |
1509 | OPS_MAGIC, /* Always the last thing */ | |
1510 | }; | |
1511 | ||
1512 | /* Target ops structure for accessing VxWorks child processes over the net */ | |
1513 | ||
1514 | struct target_ops vx_run_ops = { | |
1515 | "vxprocess", "VxWorks process", | |
70dcc196 JK |
1516 | "VxWorks process, started by the \"run\" command.", |
1517 | vx_proc_open, 0, /* vx_detach, */ | |
07d021a6 JG |
1518 | vx_resume, vx_wait, |
1519 | vx_read_register, vx_write_register, | |
1520 | vx_prepare_to_store, vx_convert_to_virtual, vx_convert_from_virtual, | |
1521 | vx_xfer_memory, vx_run_files_info, | |
1522 | vx_insert_breakpoint, vx_remove_breakpoint, | |
1523 | 0, 0, 0, 0, 0, /* terminal stuff */ | |
1524 | 0, /* vx_kill, */ | |
1525 | vx_add_file_command, | |
07d021a6 JG |
1526 | vx_lookup_symbol, |
1527 | vx_create_inferior, vx_mourn_inferior, | |
1528 | process_stratum, 0, /* next */ | |
1529 | 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */ | |
1530 | OPS_MAGIC, /* Always the last thing */ | |
1531 | }; | |
1532 | /* ==> Remember when reading at end of file, there are two "ops" structs here. */ | |
1533 | \f | |
1534 | void | |
1535 | _initialize_vx () | |
1536 | { | |
1537 | add_target (&vx_ops); | |
1538 | add_target (&vx_run_ops); | |
1539 | } |