4187119d |
1 | /* Convex stuff for GDB. |
7a67dd45 |
2 | Copyright (C) 1990 Free Software Foundation, Inc. |
4187119d |
3 | |
4 | This file is part of GDB. |
5 | |
6 | GDB is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by |
8 | the Free Software Foundation; either version 1, or (at your option) |
9 | any later version. |
10 | |
11 | GDB is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | GNU General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU General Public License |
17 | along with GDB; see the file COPYING. If not, write to |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
e91b87a3 |
19 | |
7a67dd45 |
20 | #include <stdio.h> |
e91b87a3 |
21 | #include "defs.h" |
22 | #include "param.h" |
4187119d |
23 | #include "command.h" |
24 | #include "symtab.h" |
25 | #include "value.h" |
e91b87a3 |
26 | #include "frame.h" |
27 | #include "inferior.h" |
4187119d |
28 | #include "wait.h" |
e91b87a3 |
29 | |
4187119d |
30 | #include <signal.h> |
31 | #include <fcntl.h> |
32 | #include <a.out.h> |
33 | |
e91b87a3 |
34 | #include <sys/param.h> |
35 | #include <sys/dir.h> |
e91b87a3 |
36 | #include <sys/user.h> |
37 | #include <sys/ioctl.h> |
4187119d |
38 | #include <sys/pcntl.h> |
39 | #include <sys/thread.h> |
40 | #include <sys/proc.h> |
e91b87a3 |
41 | #include <sys/file.h> |
42 | #include <sys/stat.h> |
4187119d |
43 | #include <sys/mman.h> |
e91b87a3 |
44 | |
4187119d |
45 | #include <convex/vmparam.h> |
46 | #include <convex/filehdr.h> |
47 | #include <convex/opthdr.h> |
48 | #include <convex/scnhdr.h> |
49 | #include <convex/core.h> |
e91b87a3 |
50 | |
4187119d |
51 | /* Per-thread data, read from the inferior at each stop and written |
52 | back at each resume. */ |
e91b87a3 |
53 | |
4187119d |
54 | /* Number of active threads. |
55 | Tables are valid for thread numbers less than this. */ |
e91b87a3 |
56 | |
4187119d |
57 | static int n_threads; |
e91b87a3 |
58 | |
4187119d |
59 | #define MAXTHREADS 8 |
60 | |
61 | /* Thread state. The remaining data is valid only if this is PI_TALIVE. */ |
e91b87a3 |
62 | |
4187119d |
63 | static int thread_state[MAXTHREADS]; |
e91b87a3 |
64 | |
4187119d |
65 | /* Stop pc, signal, signal subcode */ |
e91b87a3 |
66 | |
4187119d |
67 | static int thread_pc[MAXTHREADS]; |
68 | static int thread_signal[MAXTHREADS]; |
69 | static int thread_sigcode[MAXTHREADS]; |
e91b87a3 |
70 | |
4187119d |
71 | /* Thread registers. |
72 | If thread is selected, the regs are in registers[] instead. */ |
e91b87a3 |
73 | |
4187119d |
74 | static char thread_regs[MAXTHREADS][REGISTER_BYTES]; |
e91b87a3 |
75 | |
4187119d |
76 | /* 1 if the top frame on the thread's stack was a context frame, |
77 | meaning that the kernel is up to something and we should not |
78 | touch the thread at all except to resume it. */ |
e91b87a3 |
79 | |
4187119d |
80 | static char thread_is_in_kernel[MAXTHREADS]; |
e91b87a3 |
81 | |
4187119d |
82 | /* The currently selected thread's number. */ |
83 | |
84 | static int inferior_thread; |
85 | |
86 | /* Inferior process's file handle and a process control block |
87 | to feed args to ioctl with. */ |
88 | |
89 | static int inferior_fd; |
90 | static struct pcntl ps; |
91 | |
92 | /* SOFF file headers for exec or core file. */ |
93 | |
94 | static FILEHDR filehdr; |
95 | static OPTHDR opthdr; |
96 | static SCNHDR scnhdr; |
97 | |
98 | /* Address maps constructed from section headers of exec and core files. |
99 | Defines process address -> file address translation. */ |
100 | |
101 | struct pmap |
e91b87a3 |
102 | { |
4187119d |
103 | long mem_addr; /* process start address */ |
104 | long mem_end; /* process end+1 address */ |
105 | long file_addr; /* file start address */ |
106 | long thread; /* -1 shared; 0,1,... thread-local */ |
107 | long type; /* S_TEXT S_DATA S_BSS S_TBSS etc */ |
108 | long which; /* used to sort map for info files */ |
109 | }; |
e91b87a3 |
110 | |
4187119d |
111 | static int n_exec, n_core; |
112 | static struct pmap exec_map[100]; |
113 | static struct pmap core_map[100]; |
e91b87a3 |
114 | |
4187119d |
115 | /* Offsets in the core file of core_context and core_tcontext blocks. */ |
116 | |
117 | static int context_offset; |
118 | static int tcontext_offset[MAXTHREADS]; |
119 | |
120 | /* Core file control blocks. */ |
121 | |
122 | static struct core_context_v70 c; |
123 | static struct core_tcontext_v70 tc; |
124 | static struct user u; |
125 | static thread_t th; |
126 | static proc_t pr; |
127 | |
128 | /* The registers of the currently selected thread. */ |
129 | |
130 | extern char registers[REGISTER_BYTES]; |
131 | |
132 | /* Vector and communication registers from core dump or from inferior. |
133 | These are read on demand, ie, not normally valid. */ |
134 | |
135 | static struct vecst vector_registers; |
136 | static struct creg_ctx comm_registers; |
137 | |
138 | /* Flag, set on a vanilla CONT command and cleared when the inferior |
139 | is continued. */ |
140 | |
141 | static int all_continue; |
142 | |
143 | /* Flag, set when the inferior is continued by a vanilla CONT command, |
144 | cleared if it is continued for any other purpose. */ |
145 | |
146 | static int thread_switch_ok; |
147 | |
148 | /* Stack of signals recieved from threads but not yet delivered to gdb. */ |
149 | |
150 | struct threadpid |
e91b87a3 |
151 | { |
4187119d |
152 | int pid; |
153 | int thread; |
154 | int signo; |
155 | int subsig; |
156 | int pc; |
157 | }; |
e91b87a3 |
158 | |
4187119d |
159 | static struct threadpid signal_stack_bot[100]; |
160 | static struct threadpid *signal_stack = signal_stack_bot; |
e91b87a3 |
161 | |
4187119d |
162 | /* How to detect empty stack -- bottom frame is all zero. */ |
e91b87a3 |
163 | |
4187119d |
164 | #define signal_stack_is_empty() (signal_stack->pid == 0) |
e91b87a3 |
165 | |
4187119d |
166 | /* Mode controlled by SET PIPE command, controls the psw SEQ bit |
167 | which forces each instruction to complete before the next one starts. */ |
e91b87a3 |
168 | |
4187119d |
169 | static int sequential = 0; |
e91b87a3 |
170 | |
4187119d |
171 | /* Mode controlled by the SET PARALLEL command. Values are: |
172 | 0 concurrency limit 1 thread, dynamic scheduling |
173 | 1 no concurrency limit, dynamic scheduling |
174 | 2 no concurrency limit, fixed scheduling */ |
e91b87a3 |
175 | |
4187119d |
176 | static int parallel = 1; |
e91b87a3 |
177 | |
4187119d |
178 | /* Mode controlled by SET BASE command, output radix for unformatted |
179 | integer typeout, as in argument lists, aggregates, and so on. |
180 | Zero means guess whether it's an address (hex) or not (decimal). */ |
181 | |
182 | static int output_radix = 0; |
183 | |
184 | /* Signal subcode at last thread stop. */ |
e91b87a3 |
185 | |
4187119d |
186 | static int stop_sigcode; |
187 | |
188 | /* Hack, see wait() below. */ |
189 | |
190 | static int exec_trap_timer; |
191 | |
192 | /* Chain containing all defined commands. */ |
193 | |
194 | extern struct cmd_list_element *cmdlist; |
195 | |
196 | /* Chain containing all defined set subcommands */ |
197 | |
198 | extern struct cmd_list_element *setlist; |
e91b87a3 |
199 | |
200 | /* Hook for `exec_file_command' command to call. */ |
201 | |
202 | extern void (*exec_file_display_hook) (); |
203 | |
204 | /* File names of core file and executable file. */ |
205 | |
206 | extern char *corefile; |
207 | extern char *execfile; |
208 | |
209 | /* Descriptors on which core file and executable file are open. |
210 | Note that the execchan is closed when an inferior is created |
211 | and reopened if the inferior dies or is killed. */ |
212 | |
213 | extern int corechan; |
214 | extern int execchan; |
215 | |
216 | /* Last modification time of executable file. |
217 | Also used in source.c to compare against mtime of a source file. */ |
218 | |
219 | extern int exec_mtime; |
220 | |
4187119d |
221 | /* Virtual addresses of bounds of the two areas of memory in the core file. |
222 | NB: These variables are set to plausible but useless values on convex. */ |
e91b87a3 |
223 | |
224 | extern CORE_ADDR data_start; |
225 | extern CORE_ADDR data_end; |
226 | extern CORE_ADDR stack_start; |
227 | extern CORE_ADDR stack_end; |
228 | |
229 | /* Virtual addresses of bounds of two areas of memory in the exec file. |
4187119d |
230 | NB: Only text_start and text_end have meaningful values on convex. */ |
e91b87a3 |
231 | |
232 | extern CORE_ADDR text_start; |
233 | extern CORE_ADDR text_end; |
234 | |
235 | extern CORE_ADDR exec_data_start; |
236 | extern CORE_ADDR exec_data_end; |
237 | |
238 | /* Address in executable file of start of text area data. */ |
239 | |
240 | extern int text_offset; |
241 | |
242 | /* Address in executable file of start of data area data. */ |
243 | |
244 | extern int exec_data_offset; |
245 | |
246 | /* Address in core file of start of data area data. */ |
247 | |
248 | extern int data_offset; |
249 | |
250 | /* Address in core file of start of stack area data. */ |
251 | |
252 | extern int stack_offset; |
253 | |
e91b87a3 |
254 | /* a.out header saved in core file. */ |
255 | |
4187119d |
256 | extern struct exec core_aouthdr; |
e91b87a3 |
257 | |
258 | /* a.out header of exec file. */ |
259 | |
4187119d |
260 | extern struct exec exec_aouthdr; |
261 | |
262 | /* Routine to check for exec-core mismatch. */ |
e91b87a3 |
263 | |
264 | extern void validate_files (); |
e91b87a3 |
265 | |
4187119d |
266 | /* Nonzero if we are debugging an attached outside process |
267 | rather than an inferior. */ |
e91b87a3 |
268 | |
4187119d |
269 | extern int attach_flag; |
e91b87a3 |
270 | |
e91b87a3 |
271 | |
e91b87a3 |
272 | |
4187119d |
273 | static struct type *vector_type (); |
274 | static long *read_vector_register (); |
275 | static long *read_vector_register_1 (); |
276 | static void write_vector_register (); |
277 | static REGISTER_TYPE read_comm_register (); |
278 | static void write_comm_register (); |
279 | static void convex_cont_command (); |
280 | static void thread_continue (); |
281 | static void select_thread (); |
282 | static void scan_stack (); |
283 | static void set_fixed_scheduling (); |
284 | static char *subsig_name (); |
285 | static void psw_info (); |
286 | static sig_noop (); |
287 | static ptr_cmp (); |
e91b87a3 |
288 | |
4187119d |
289 | extern char *sys_siglist[]; |
290 | extern int errno; |
291 | \f |
292 | /* Execute ptrace. Convex V7 replaced ptrace with pattach. |
293 | Allow ptrace (0) as a no-op. */ |
e91b87a3 |
294 | |
4187119d |
295 | int |
296 | call_ptrace (request, pid, procaddr, buf) |
297 | int request, pid, procaddr, buf; |
298 | { |
299 | if (request == 0) |
300 | return; |
301 | error ("no ptrace"); |
302 | } |
e91b87a3 |
303 | |
4187119d |
304 | /* Replacement for system execle routine. |
305 | Convert it to an equivalent exect, which pattach insists on. */ |
e91b87a3 |
306 | |
4187119d |
307 | execle (name, argv) |
308 | char *name, *argv; |
309 | { |
310 | char ***envp = (char ***) &argv; |
311 | while (*envp++) ; |
e91b87a3 |
312 | |
4187119d |
313 | signal (SIGTRAP, sig_noop); |
314 | exect (name, &argv, *envp); |
315 | } |
e91b87a3 |
316 | |
4187119d |
317 | /* Stupid handler for stupid trace trap that otherwise causes |
318 | startup to stupidly hang. */ |
e91b87a3 |
319 | |
4187119d |
320 | static sig_noop () |
321 | {} |
e91b87a3 |
322 | |
4187119d |
323 | /* Read registers from inferior into registers[] array. |
324 | For convex, they are already there, read in when the inferior stops. */ |
e91b87a3 |
325 | |
4187119d |
326 | void |
327 | fetch_inferior_registers () |
328 | { |
329 | } |
e91b87a3 |
330 | |
4187119d |
331 | /* Store our register values back into the inferior. |
332 | For Convex, do this only once, right before resuming inferior. */ |
e91b87a3 |
333 | |
4187119d |
334 | store_inferior_registers (regno) |
335 | int regno; |
336 | { |
337 | } |
e91b87a3 |
338 | |
4187119d |
339 | /* Copy LEN bytes from inferior's memory starting at MEMADDR |
340 | to debugger memory starting at MYADDR. |
341 | On failure (cannot read from inferior, usually because address is out |
342 | of bounds) returns the value of errno. */ |
e91b87a3 |
343 | |
4187119d |
344 | int |
345 | read_inferior_memory (memaddr, myaddr, len) |
346 | CORE_ADDR memaddr; |
347 | char *myaddr; |
348 | int len; |
349 | { |
350 | errno = 0; |
351 | while (len > 0) |
352 | { |
353 | /* little-known undocumented max request size */ |
354 | int i = (len < 12288) ? len : 12288; |
e91b87a3 |
355 | |
4187119d |
356 | lseek (inferior_fd, memaddr, 0); |
357 | read (inferior_fd, myaddr, i); |
e91b87a3 |
358 | |
4187119d |
359 | memaddr += i; |
360 | myaddr += i; |
361 | len -= i; |
e91b87a3 |
362 | } |
4187119d |
363 | if (errno) |
364 | bzero (myaddr, len); |
365 | return errno; |
e91b87a3 |
366 | } |
e91b87a3 |
367 | |
4187119d |
368 | /* Copy LEN bytes of data from debugger memory at MYADDR |
369 | to inferior's memory at MEMADDR. |
370 | Returns errno on failure (cannot write the inferior) */ |
e91b87a3 |
371 | |
4187119d |
372 | int |
373 | write_inferior_memory (memaddr, myaddr, len) |
374 | CORE_ADDR memaddr; |
375 | char *myaddr; |
376 | int len; |
377 | { |
378 | errno = 0; |
379 | lseek (inferior_fd, memaddr, 0); |
380 | write (inferior_fd, myaddr, len); |
381 | return errno; |
382 | } |
e91b87a3 |
383 | |
4187119d |
384 | /* Here from create_inferior when the inferior process has been created |
385 | and started up. We must do a pattach to grab it for debugging. |
e91b87a3 |
386 | |
4187119d |
387 | Also, intercept the CONT command by altering its dispatch address. */ |
e91b87a3 |
388 | |
4187119d |
389 | create_inferior_hook (pid) |
390 | int pid; |
391 | { |
392 | static char cont[] = "cont"; |
393 | static char cont1[] = "c"; |
394 | char *linep = cont; |
395 | char *linep1 = cont1; |
396 | char **line = &linep; |
397 | char **line1 = &linep1; |
398 | struct cmd_list_element *c; |
399 | |
400 | c = lookup_cmd (line, cmdlist, "", 0); |
401 | c->function = convex_cont_command; |
402 | c = lookup_cmd (line1, cmdlist, "", 0); |
403 | c->function = convex_cont_command; |
404 | |
405 | inferior_fd = pattach (pid, O_EXCL); |
406 | if (inferior_fd < 0) |
407 | perror_with_name ("pattach"); |
408 | inferior_thread = 0; |
409 | set_fixed_scheduling (pid, parallel == 2); |
410 | } |
e91b87a3 |
411 | |
4187119d |
412 | /* Attach process PID for debugging. */ |
e91b87a3 |
413 | |
4187119d |
414 | attach (pid) |
415 | int pid; |
416 | { |
417 | int fd = pattach (pid, O_EXCL); |
418 | if (fd < 0) |
419 | perror_with_name ("pattach"); |
420 | attach_flag = 1; |
421 | /* wait for strange kernel reverberations to go away */ |
422 | sleep (1); |
423 | |
424 | setpgrp (pid, pid); |
425 | |
426 | inferior_fd = fd; |
427 | inferior_thread = 0; |
428 | return pid; |
429 | } |
e91b87a3 |
430 | |
4187119d |
431 | /* Stop debugging the process whose number is PID |
432 | and continue it with signal number SIGNAL. |
433 | SIGNAL = 0 means just continue it. */ |
e91b87a3 |
434 | |
4187119d |
435 | void |
436 | detach (signal) |
437 | int signal; |
438 | { |
439 | signal_stack = signal_stack_bot; |
440 | thread_continue (-1, 0, signal); |
441 | ioctl (inferior_fd, PIXDETACH, &ps); |
442 | close (inferior_fd); |
443 | inferior_fd = 0; |
444 | attach_flag = 0; |
445 | } |
e91b87a3 |
446 | |
4187119d |
447 | /* Kill off the inferior process. */ |
e91b87a3 |
448 | |
4187119d |
449 | kill_inferior () |
450 | { |
451 | if (remote_debugging) |
452 | return; |
453 | if (inferior_pid == 0) |
454 | return; |
455 | ioctl (inferior_fd, PIXTERMINATE, 0); |
456 | wait (0); |
457 | inferior_died (); |
458 | } |
459 | |
460 | /* This is used when GDB is exiting. It gives less chance of error.*/ |
461 | |
462 | kill_inferior_fast () |
463 | { |
464 | if (remote_debugging) |
465 | return; |
466 | if (inferior_pid == 0) |
467 | return; |
468 | ioctl (inferior_fd, PIXTERMINATE, 0); |
469 | wait (0); |
470 | } |
471 | |
472 | /* Read vector register REG, and return a pointer to the value. */ |
473 | |
474 | static long * |
475 | read_vector_register (reg) |
476 | int reg; |
477 | { |
478 | if (have_inferior_p ()) |
479 | { |
480 | errno = 0; |
481 | ps.pi_buffer = (char *) &vector_registers; |
482 | ps.pi_nbytes = sizeof vector_registers; |
483 | ps.pi_offset = 0; |
484 | ps.pi_thread = inferior_thread; |
485 | ioctl (inferior_fd, PIXRDVREGS, &ps); |
486 | if (errno) |
487 | bzero (&vector_registers, sizeof vector_registers); |
488 | } |
489 | else if (corechan >= 0) |
490 | { |
491 | lseek (corechan, tcontext_offset[inferior_thread], 0); |
492 | if (myread (corechan, &tc, sizeof tc) < 0) |
493 | perror_with_name (corefile); |
494 | lseek (corechan, tc.core_thread_p, 0); |
495 | if (myread (corechan, &th, sizeof th) < 0) |
496 | perror_with_name (corefile); |
497 | lseek (corechan, tc.core_vregs_p, 0); |
498 | if (myread (corechan, &vector_registers, 16*128) < 0) |
499 | perror_with_name (corefile); |
500 | vector_registers.vm[0] = th.t_vect_ctx.vc_vm[0]; |
501 | vector_registers.vm[1] = th.t_vect_ctx.vc_vm[1]; |
502 | vector_registers.vls = th.t_vect_ctx.vc_vls; |
503 | } |
504 | |
505 | return read_vector_register_1 (reg); |
506 | } |
507 | |
508 | /* Return a pointer to vector register REG, which must already have been |
509 | fetched from the inferior or core file. */ |
510 | |
511 | static long * |
512 | read_vector_register_1 (reg) |
513 | int reg; |
514 | { |
515 | switch (reg) |
516 | { |
517 | case VM_REGNUM: |
518 | return (long *) vector_registers.vm; |
519 | case VS_REGNUM: |
520 | return (long *) &vector_registers.vls; |
521 | case VL_REGNUM: |
522 | return 1 + (long *) &vector_registers.vls; |
523 | default: |
524 | return (long *) &vector_registers.vr[reg]; |
525 | } |
526 | } |
527 | |
528 | /* Write vector register REG, element ELEMENT, new value VAL. |
529 | NB: must use read-modify-write on the entire vector state, |
530 | since pattach does not do offsetted writes correctly. */ |
531 | |
532 | static void |
533 | write_vector_register (reg, element, val) |
534 | int reg, element; |
535 | REGISTER_TYPE val; |
536 | { |
537 | if (have_inferior_p ()) |
538 | { |
539 | errno = 0; |
540 | ps.pi_thread = inferior_thread; |
541 | ps.pi_offset = 0; |
542 | ps.pi_buffer = (char *) &vector_registers; |
543 | ps.pi_nbytes = sizeof vector_registers; |
544 | |
545 | ioctl (inferior_fd, PIXRDVREGS, &ps); |
546 | |
547 | switch (reg) |
548 | { |
549 | case VL_REGNUM: |
550 | vector_registers.vls = |
551 | (vector_registers.vls & 0xffffffff00000000LL) |
552 | + (unsigned long) val; |
553 | break; |
554 | |
555 | case VS_REGNUM: |
556 | vector_registers.vls = |
557 | (val << 32) + (unsigned long) vector_registers.vls; |
558 | break; |
559 | |
560 | default: |
561 | vector_registers.vr[reg].el[element] = val; |
562 | break; |
563 | } |
564 | |
565 | ioctl (inferior_fd, PIXWRVREGS, &ps); |
566 | |
567 | if (errno) |
568 | perror_with_name ("writing vector register"); |
569 | } |
570 | } |
571 | |
572 | /* Return the contents of communication register NUM. */ |
573 | |
574 | static REGISTER_TYPE |
575 | read_comm_register (num) |
576 | int num; |
577 | { |
578 | if (have_inferior_p ()) |
579 | { |
580 | ps.pi_buffer = (char *) &comm_registers; |
581 | ps.pi_nbytes = sizeof comm_registers; |
582 | ps.pi_offset = 0; |
583 | ps.pi_thread = inferior_thread; |
584 | ioctl (inferior_fd, PIXRDCREGS, &ps); |
585 | } |
586 | return comm_registers.crreg.r4[num]; |
587 | } |
588 | |
589 | /* Store a new value VAL into communication register NUM. |
590 | NB: Must use read-modify-write on the whole comm register set |
591 | since pattach does not do offsetted writes correctly. */ |
592 | |
593 | static void |
594 | write_comm_register (num, val) |
595 | int num; |
596 | REGISTER_TYPE val; |
597 | { |
598 | if (have_inferior_p ()) |
599 | { |
600 | ps.pi_buffer = (char *) &comm_registers; |
601 | ps.pi_nbytes = sizeof comm_registers; |
602 | ps.pi_offset = 0; |
603 | ps.pi_thread = inferior_thread; |
604 | ioctl (inferior_fd, PIXRDCREGS, &ps); |
605 | comm_registers.crreg.r4[num] = val; |
606 | ioctl (inferior_fd, PIXWRCREGS, &ps); |
607 | } |
608 | } |
609 | |
610 | /* Resume execution of the inferior process. |
611 | If STEP is nonzero, single-step it. |
612 | If SIGNAL is nonzero, give it that signal. */ |
613 | |
614 | void |
615 | resume (step, signal) |
616 | int step; |
617 | int signal; |
618 | { |
619 | errno = 0; |
620 | if (remote_debugging) |
621 | remote_resume (step, signal); |
622 | else |
623 | if (step || signal) |
624 | thread_continue (inferior_thread, step, signal); |
625 | else |
626 | thread_continue (-1, 0, 0); |
627 | } |
628 | |
629 | /* Maybe resume some threads. |
630 | THREAD is which thread to resume, or -1 to resume them all. |
631 | STEP and SIGNAL are as in resume. |
632 | |
633 | Global variable ALL_CONTINUE is set when we are here to do a |
634 | `cont' command; otherwise we may be doing `finish' or a call or |
635 | something else that will not tolerate an automatic thread switch. |
636 | |
637 | If there are stopped threads waiting to deliver signals, and |
638 | ALL_CONTINUE, do not actually resume anything. gdb will do a wait |
639 | and see one of the stopped threads in the queue. */ |
640 | |
641 | static void |
642 | thread_continue (thread, step, signal) |
643 | int thread, step, signal; |
644 | { |
645 | int n; |
646 | |
647 | /* If we are to continue all threads, but not for the CONTINUE command, |
648 | pay no attention and continue only the selected thread. */ |
649 | |
650 | if (thread < 0 && ! all_continue) |
651 | thread = inferior_thread; |
652 | |
653 | /* If we are not stepping, we have now executed the continue part |
654 | of a CONTINUE command. */ |
655 | |
656 | if (! step) |
657 | all_continue = 0; |
658 | |
659 | /* Allow wait() to switch threads if this is an all-out continue. */ |
660 | |
661 | thread_switch_ok = thread < 0; |
662 | |
663 | /* If there are threads queued up, don't resume. */ |
664 | |
665 | if (thread_switch_ok && ! signal_stack_is_empty ()) |
666 | return; |
667 | |
668 | /* OK, do it. */ |
669 | |
670 | for (n = 0; n < n_threads; n++) |
671 | if (thread_state[n] == PI_TALIVE) |
672 | { |
673 | select_thread (n); |
674 | |
675 | if ((thread < 0 || n == thread) && ! thread_is_in_kernel[n]) |
676 | { |
677 | /* Blam the trace bits in the stack's saved psws to match |
678 | the desired step mode. This is required so that |
679 | single-stepping a return doesn't restore a psw with a |
680 | clear trace bit and fly away, and conversely, |
681 | proceeding through a return in a routine that was |
682 | stepped into doesn't cause a phantom break by restoring |
683 | a psw with the trace bit set. */ |
684 | scan_stack (PSW_T_BIT, step); |
685 | scan_stack (PSW_S_BIT, sequential); |
686 | } |
687 | |
688 | ps.pi_buffer = registers; |
689 | ps.pi_nbytes = REGISTER_BYTES; |
690 | ps.pi_offset = 0; |
691 | ps.pi_thread = n; |
692 | if (! thread_is_in_kernel[n]) |
693 | if (ioctl (inferior_fd, PIXWRREGS, &ps)) |
694 | perror_with_name ("PIXWRREGS"); |
695 | |
696 | if (thread < 0 || n == thread) |
697 | { |
698 | ps.pi_pc = 1; |
699 | ps.pi_signo = signal; |
700 | if (ioctl (inferior_fd, step ? PIXSTEP : PIXCONTINUE, &ps) < 0) |
701 | perror_with_name ("PIXCONTINUE"); |
702 | } |
703 | } |
704 | |
705 | if (ioctl (inferior_fd, PIXRUN, &ps) < 0) |
706 | perror_with_name ("PIXRUN"); |
707 | } |
708 | |
709 | /* Replacement for system wait routine. |
710 | |
711 | The system wait returns with one or more threads stopped by |
712 | signals. Put stopped threads on a stack and return them one by |
713 | one, so that it appears that wait returns one thread at a time. |
714 | |
715 | Global variable THREAD_SWITCH_OK is set when gdb can tolerate wait |
716 | returning a new thread. If it is false, then only one thread is |
717 | running; we will do a real wait, the thread will do something, and |
718 | we will return that. */ |
719 | |
7a67dd45 |
720 | pid_t |
4187119d |
721 | wait (w) |
722 | union wait *w; |
723 | { |
724 | int pid; |
725 | |
726 | if (!w) |
727 | return wait3 (0, 0, 0); |
728 | |
729 | /* Do a real wait if we were told to, or if there are no queued threads. */ |
730 | |
731 | if (! thread_switch_ok || signal_stack_is_empty ()) |
732 | { |
733 | int thread; |
734 | |
735 | pid = wait3 (w, 0, 0); |
736 | |
737 | if (!WIFSTOPPED (*w) || pid != inferior_pid) |
738 | return pid; |
739 | |
740 | /* The inferior has done something and stopped. Read in all the |
741 | threads' registers, and queue up any signals that happened. */ |
742 | |
743 | if (ioctl (inferior_fd, PIXGETTHCOUNT, &ps) < 0) |
744 | perror_with_name ("PIXGETTHCOUNT"); |
745 | |
746 | n_threads = ps.pi_othdcnt; |
747 | for (thread = 0; thread < n_threads; thread++) |
748 | { |
749 | ps.pi_thread = thread; |
750 | if (ioctl (inferior_fd, PIXGETSUBCODE, &ps) < 0) |
751 | perror_with_name ("PIXGETSUBCODE"); |
752 | thread_state[thread] = ps.pi_otstate; |
753 | |
754 | if (ps.pi_otstate == PI_TALIVE) |
755 | { |
756 | select_thread (thread); |
757 | ps.pi_buffer = registers; |
758 | ps.pi_nbytes = REGISTER_BYTES; |
759 | ps.pi_offset = 0; |
760 | ps.pi_thread = thread; |
761 | if (ioctl (inferior_fd, PIXRDREGS, &ps) < 0) |
762 | perror_with_name ("PIXRDREGS"); |
763 | |
764 | thread_pc[thread] = read_pc (); |
765 | thread_signal[thread] = ps.pi_osigno; |
766 | thread_sigcode[thread] = ps.pi_osigcode; |
767 | |
768 | /* If the thread's stack has a context frame |
769 | on top, something fucked is going on. I do not |
770 | know what, but do I know this: the only thing you |
771 | can do with such a thread is continue it. */ |
772 | |
773 | thread_is_in_kernel[thread] = |
774 | ((read_register (PS_REGNUM) >> 25) & 3) == 0; |
775 | |
776 | /* Signals push an extended frame and then fault |
777 | with a ridiculous pc. Pop the frame. */ |
778 | |
779 | if (thread_pc[thread] > STACK_END_ADDR) |
e91b87a3 |
780 | { |
4187119d |
781 | POP_FRAME; |
782 | if (is_break_pc (thread_pc[thread])) |
783 | thread_pc[thread] = read_pc () - 2; |
784 | else |
785 | thread_pc[thread] = read_pc (); |
786 | write_register (PC_REGNUM, thread_pc[thread]); |
e91b87a3 |
787 | } |
4187119d |
788 | |
789 | if (ps.pi_osigno || ps.pi_osigcode) |
e91b87a3 |
790 | { |
4187119d |
791 | signal_stack++; |
792 | signal_stack->pid = pid; |
793 | signal_stack->thread = thread; |
794 | signal_stack->signo = thread_signal[thread]; |
795 | signal_stack->subsig = thread_sigcode[thread]; |
796 | signal_stack->pc = thread_pc[thread]; |
e91b87a3 |
797 | } |
4187119d |
798 | |
799 | /* The following hackery is caused by a unix 7.1 feature: |
800 | the inferior's fixed scheduling mode is cleared when |
801 | it execs the shell (since the shell is not a parallel |
802 | program). So, note the 5.4 trap we get when |
803 | the shell does its exec, then catch the 5.0 trap |
804 | that occurs when the debuggee starts, and set fixed |
805 | scheduling mode properly. */ |
806 | |
807 | if (ps.pi_osigno == 5 && ps.pi_osigcode == 4) |
808 | exec_trap_timer = 1; |
809 | else |
810 | exec_trap_timer--; |
811 | |
812 | if (ps.pi_osigno == 5 && exec_trap_timer == 0) |
813 | set_fixed_scheduling (pid, parallel == 2); |
814 | } |
815 | } |
816 | |
817 | if (signal_stack_is_empty ()) |
818 | error ("no active threads?!"); |
819 | } |
820 | |
821 | /* Select the thread that stopped, and return *w saying why. */ |
822 | |
823 | select_thread (signal_stack->thread); |
824 | |
825 | stop_signal = signal_stack->signo; |
826 | stop_sigcode = signal_stack->subsig; |
827 | |
828 | WSETSTOP (*w, signal_stack->signo); |
829 | w->w_thread = signal_stack->thread; |
830 | return (signal_stack--)->pid; |
831 | } |
832 | |
833 | /* Select thread THREAD -- its registers, stack, per-thread memory. |
834 | This is the only routine that may assign to inferior_thread |
835 | or thread_regs[]. */ |
836 | |
837 | static void |
838 | select_thread (thread) |
839 | int thread; |
840 | { |
841 | if (thread == inferior_thread) |
842 | return; |
843 | |
844 | bcopy (registers, thread_regs[inferior_thread], REGISTER_BYTES); |
845 | ps.pi_thread = inferior_thread = thread; |
846 | if (have_inferior_p ()) |
847 | ioctl (inferior_fd, PISETRWTID, &ps); |
848 | bcopy (thread_regs[thread], registers, REGISTER_BYTES); |
849 | } |
850 | |
851 | /* Routine to set or clear a psw bit in the psw and also all psws |
852 | saved on the stack. Quits when we get to a frame in which the |
853 | saved psw is correct. */ |
854 | |
855 | static void |
856 | scan_stack (bit, val) |
857 | long bit, val; |
858 | { |
859 | long ps = read_register (PS_REGNUM); |
860 | long fp; |
861 | if (val ? !(ps & bit) : (ps & bit)) |
862 | { |
863 | ps ^= bit; |
864 | write_register (PS_REGNUM, ps); |
865 | |
866 | fp = read_register (FP_REGNUM); |
867 | while (fp & 0x80000000) |
868 | { |
869 | ps = read_memory_integer (fp + 4, 4); |
870 | if (val ? (ps & bit) : !(ps & bit)) |
871 | break; |
872 | ps ^= bit; |
873 | write_memory (fp + 4, &ps, 4); |
874 | fp = read_memory_integer (fp + 8, 4); |
875 | } |
876 | } |
877 | } |
878 | |
879 | /* Set fixed scheduling (alliant mode) of process PID to ARG (0 or 1). */ |
880 | |
881 | static void |
882 | set_fixed_scheduling (pid, arg) |
883 | int arg; |
884 | { |
885 | struct pattributes pattr; |
886 | getpattr (pid, &pattr); |
887 | pattr.pattr_pfixed = arg; |
888 | setpattr (pid, &pattr); |
889 | } |
890 | \f |
891 | core_file_command (filename, from_tty) |
892 | char *filename; |
893 | int from_tty; |
894 | { |
895 | int n; |
896 | |
897 | /* Discard all vestiges of any previous core file |
898 | and mark data and stack spaces as empty. */ |
899 | |
900 | if (corefile) |
901 | free (corefile); |
902 | corefile = 0; |
903 | |
904 | if (corechan >= 0) |
905 | close (corechan); |
906 | corechan = -1; |
907 | |
908 | data_start = 0; |
909 | data_end = 0; |
910 | stack_start = STACK_END_ADDR; |
911 | stack_end = STACK_END_ADDR; |
912 | n_core = 0; |
913 | |
914 | /* Now, if a new core file was specified, open it and digest it. */ |
915 | |
916 | if (filename) |
917 | { |
918 | filename = tilde_expand (filename); |
919 | make_cleanup (free, filename); |
920 | |
921 | if (have_inferior_p ()) |
922 | error ("To look at a core file, you must kill the inferior with \"kill\"."); |
923 | corechan = open (filename, O_RDONLY, 0); |
924 | if (corechan < 0) |
925 | perror_with_name (filename); |
926 | |
927 | if (myread (corechan, &filehdr, sizeof filehdr) < 0) |
928 | perror_with_name (filename); |
929 | |
930 | if (!IS_CORE_SOFF_MAGIC (filehdr.h_magic)) |
931 | error ("%s: not a core file.\n", filename); |
932 | |
933 | if (myread (corechan, &opthdr, filehdr.h_opthdr) < 0) |
934 | perror_with_name (filename); |
935 | |
936 | /* Read through the section headers. |
937 | For text, data, etc, record an entry in the core file map. |
938 | For context and tcontext, record the file address of |
939 | the context blocks. */ |
940 | |
941 | lseek (corechan, (long) filehdr.h_scnptr, 0); |
942 | |
943 | n_threads = 0; |
944 | for (n = 0; n < filehdr.h_nscns; n++) |
945 | { |
946 | if (myread (corechan, &scnhdr, sizeof scnhdr) < 0) |
947 | perror_with_name (filename); |
948 | if ((scnhdr.s_flags & S_TYPMASK) >= S_TEXT |
949 | && (scnhdr.s_flags & S_TYPMASK) <= S_COMON) |
950 | { |
951 | core_map[n_core].mem_addr = scnhdr.s_vaddr; |
952 | core_map[n_core].mem_end = scnhdr.s_vaddr + scnhdr.s_size; |
953 | core_map[n_core].file_addr = scnhdr.s_scnptr; |
954 | core_map[n_core].type = scnhdr.s_flags & S_TYPMASK; |
955 | if (core_map[n_core].type != S_TBSS |
956 | && core_map[n_core].type != S_TDATA |
957 | && core_map[n_core].type != S_TTEXT) |
958 | core_map[n_core].thread = -1; |
959 | else if (n_core == 0 |
960 | || core_map[n_core-1].mem_addr != scnhdr.s_vaddr) |
961 | core_map[n_core].thread = 0; |
962 | else |
963 | core_map[n_core].thread = core_map[n_core-1].thread + 1; |
964 | n_core++; |
e91b87a3 |
965 | } |
4187119d |
966 | else if ((scnhdr.s_flags & S_TYPMASK) == S_CONTEXT) |
967 | context_offset = scnhdr.s_scnptr; |
968 | else if ((scnhdr.s_flags & S_TYPMASK) == S_TCONTEXT) |
969 | tcontext_offset[n_threads++] = scnhdr.s_scnptr; |
e91b87a3 |
970 | } |
4187119d |
971 | |
972 | /* Read the context block, struct user, struct proc, |
973 | and the comm regs. */ |
974 | |
975 | lseek (corechan, context_offset, 0); |
976 | if (myread (corechan, &c, sizeof c) < 0) |
977 | perror_with_name (filename); |
978 | lseek (corechan, c.core_user_p, 0); |
979 | if (myread (corechan, &u, sizeof u) < 0) |
980 | perror_with_name (filename); |
981 | lseek (corechan, c.core_proc_p, 0); |
982 | if (myread (corechan, &pr, sizeof pr) < 0) |
983 | perror_with_name (filename); |
984 | comm_registers = pr.p_creg; |
985 | |
986 | /* Core file apparently is really there. Make it really exist |
987 | for xfer_core_file so we can do read_memory on it. */ |
988 | |
989 | if (filename[0] == '/') |
990 | corefile = savestring (filename, strlen (filename)); |
e91b87a3 |
991 | else |
4187119d |
992 | corefile = concat (current_directory, "/", filename); |
993 | |
994 | printf_filtered ("Program %s ", u.u_comm); |
995 | |
996 | /* Read the thread registers and fill in the thread_xxx[] data. */ |
997 | |
998 | for (n = 0; n < n_threads; n++) |
999 | { |
1000 | select_thread (n); |
1001 | |
1002 | lseek (corechan, tcontext_offset[n], 0); |
1003 | if (myread (corechan, &tc, sizeof tc) < 0) |
1004 | perror_with_name (corefile); |
1005 | lseek (corechan, tc.core_thread_p, 0); |
1006 | if (myread (corechan, &th, sizeof th) < 0) |
1007 | perror_with_name (corefile); |
1008 | |
1009 | lseek (corechan, tc.core_syscall_context_p, 0); |
1010 | if (myread (corechan, registers, REGISTER_BYTES) < 0) |
1011 | perror_with_name (corefile); |
1012 | |
1013 | thread_signal[n] = th.t_cursig; |
1014 | thread_sigcode[n] = th.t_code; |
1015 | thread_state[n] = th.t_state; |
1016 | thread_pc[n] = read_pc (); |
1017 | |
1018 | if (thread_pc[n] > STACK_END_ADDR) |
1019 | { |
1020 | POP_FRAME; |
1021 | if (is_break_pc (thread_pc[n])) |
1022 | thread_pc[n] = read_pc () - 2; |
1023 | else |
1024 | thread_pc[n] = read_pc (); |
1025 | write_register (PC_REGNUM, thread_pc[n]); |
1026 | } |
1027 | |
1028 | printf_filtered ("thread %d received signal %d, %s\n", |
1029 | n, thread_signal[n], |
1030 | thread_signal[n] < NSIG |
1031 | ? sys_siglist[thread_signal[n]] |
1032 | : "(undocumented)"); |
e91b87a3 |
1033 | } |
e91b87a3 |
1034 | |
4187119d |
1035 | /* Select an interesting thread -- also-rans died with SIGKILL, |
1036 | so find one that didn't. */ |
1037 | |
1038 | for (n = 0; n < n_threads; n++) |
1039 | if (thread_signal[n] != 0 && thread_signal[n] != SIGKILL) |
1040 | { |
1041 | select_thread (n); |
1042 | stop_signal = thread_signal[n]; |
1043 | stop_sigcode = thread_sigcode[n]; |
1044 | break; |
1045 | } |
1046 | |
1047 | core_aouthdr.a_magic = 0; |
1048 | |
1049 | flush_cached_frames (); |
1050 | set_current_frame (create_new_frame (read_register (FP_REGNUM), |
1051 | read_pc ())); |
1052 | select_frame (get_current_frame (), 0); |
e91b87a3 |
1053 | validate_files (); |
4187119d |
1054 | |
1055 | print_sel_frame (1); |
e91b87a3 |
1056 | } |
1057 | else if (from_tty) |
4187119d |
1058 | printf_filtered ("No core file now.\n"); |
1059 | } |
1060 | |
1061 | exec_file_command (filename, from_tty) |
1062 | char *filename; |
1063 | int from_tty; |
1064 | { |
1065 | int val; |
1066 | int n; |
1067 | struct stat st_exec; |
1068 | |
1069 | /* Eliminate all traces of old exec file. |
1070 | Mark text segment as empty. */ |
1071 | |
1072 | if (execfile) |
1073 | free (execfile); |
1074 | execfile = 0; |
1075 | data_start = 0; |
1076 | data_end = 0; |
1077 | text_start = 0; |
1078 | text_end = 0; |
1079 | exec_data_start = 0; |
1080 | exec_data_end = 0; |
1081 | if (execchan >= 0) |
1082 | close (execchan); |
1083 | execchan = -1; |
1084 | |
1085 | n_exec = 0; |
1086 | |
1087 | /* Now open and digest the file the user requested, if any. */ |
1088 | |
1089 | if (filename) |
1090 | { |
1091 | filename = tilde_expand (filename); |
1092 | make_cleanup (free, filename); |
1093 | |
1094 | execchan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0, |
1095 | &execfile); |
1096 | if (execchan < 0) |
1097 | perror_with_name (filename); |
1098 | |
1099 | if (myread (execchan, &filehdr, sizeof filehdr) < 0) |
1100 | perror_with_name (filename); |
1101 | |
1102 | if (! IS_SOFF_MAGIC (filehdr.h_magic)) |
1103 | error ("%s: not an executable file.", filename); |
1104 | |
1105 | if (myread (execchan, &opthdr, filehdr.h_opthdr) <= 0) |
1106 | perror_with_name (filename); |
1107 | |
1108 | /* Read through the section headers. |
1109 | For text, data, etc, record an entry in the exec file map. |
1110 | Record text_start and text_end. */ |
1111 | |
1112 | lseek (execchan, (long) filehdr.h_scnptr, 0); |
1113 | |
1114 | for (n = 0; n < filehdr.h_nscns; n++) |
1115 | { |
1116 | if (myread (execchan, &scnhdr, sizeof scnhdr) < 0) |
1117 | perror_with_name (filename); |
1118 | |
1119 | if ((scnhdr.s_flags & S_TYPMASK) >= S_TEXT |
1120 | && (scnhdr.s_flags & S_TYPMASK) <= S_COMON) |
1121 | { |
1122 | exec_map[n_exec].mem_addr = scnhdr.s_vaddr; |
1123 | exec_map[n_exec].mem_end = scnhdr.s_vaddr + scnhdr.s_size; |
1124 | exec_map[n_exec].file_addr = scnhdr.s_scnptr; |
1125 | exec_map[n_exec].type = scnhdr.s_flags & S_TYPMASK; |
1126 | n_exec++; |
1127 | |
1128 | if ((scnhdr.s_flags & S_TYPMASK) == S_TEXT) |
1129 | { |
1130 | text_start = scnhdr.s_vaddr; |
1131 | text_end = scnhdr.s_vaddr + scnhdr.s_size; |
1132 | } |
1133 | } |
1134 | } |
1135 | |
1136 | fstat (execchan, &st_exec); |
1137 | exec_mtime = st_exec.st_mtime; |
1138 | |
1139 | validate_files (); |
1140 | } |
1141 | else if (from_tty) |
1142 | printf_filtered ("No exec file now.\n"); |
e91b87a3 |
1143 | |
1144 | /* Tell display code (if any) about the changed file name. */ |
1145 | if (exec_file_display_hook) |
1146 | (*exec_file_display_hook) (filename); |
1147 | } |
1148 | |
4187119d |
1149 | /* Read data from SOFF exec or core file. |
1150 | Return 0 on success, 1 if address could not be read. */ |
1151 | |
1152 | int |
1153 | xfer_core_file (memaddr, myaddr, len) |
1154 | CORE_ADDR memaddr; |
1155 | char *myaddr; |
1156 | int len; |
1157 | { |
1158 | register int i; |
1159 | register int n; |
1160 | register int val; |
1161 | int xferchan; |
1162 | char **xferfile; |
1163 | int fileptr; |
1164 | int returnval = 0; |
1165 | |
1166 | while (len > 0) |
1167 | { |
1168 | xferfile = 0; |
1169 | xferchan = 0; |
1170 | |
1171 | /* Determine which file the next bunch of addresses reside in, |
1172 | and where in the file. Set the file's read/write pointer |
1173 | to point at the proper place for the desired address |
1174 | and set xferfile and xferchan for the correct file. |
1175 | If desired address is nonexistent, leave them zero. |
1176 | i is set to the number of bytes that can be handled |
1177 | along with the next address. */ |
1178 | |
1179 | i = len; |
1180 | |
1181 | for (n = 0; n < n_core; n++) |
1182 | { |
1183 | if (memaddr >= core_map[n].mem_addr && memaddr < core_map[n].mem_end |
1184 | && (core_map[n].thread == -1 |
1185 | || core_map[n].thread == inferior_thread)) |
1186 | { |
1187 | i = min (len, core_map[n].mem_end - memaddr); |
1188 | fileptr = core_map[n].file_addr + memaddr - core_map[n].mem_addr; |
1189 | if (core_map[n].file_addr) |
1190 | { |
1191 | xferfile = &corefile; |
1192 | xferchan = corechan; |
1193 | } |
1194 | break; |
1195 | } |
1196 | else if (core_map[n].mem_addr >= memaddr |
1197 | && core_map[n].mem_addr < memaddr + i) |
1198 | i = core_map[n].mem_addr - memaddr; |
1199 | } |
1200 | |
1201 | if (!xferfile) |
1202 | for (n = 0; n < n_exec; n++) |
1203 | { |
1204 | if (memaddr >= exec_map[n].mem_addr |
1205 | && memaddr < exec_map[n].mem_end) |
1206 | { |
1207 | i = min (len, exec_map[n].mem_end - memaddr); |
1208 | fileptr = exec_map[n].file_addr + memaddr |
1209 | - exec_map[n].mem_addr; |
1210 | if (exec_map[n].file_addr) |
1211 | { |
1212 | xferfile = &execfile; |
1213 | xferchan = execchan; |
1214 | } |
1215 | break; |
1216 | } |
1217 | else if (exec_map[n].mem_addr >= memaddr |
1218 | && exec_map[n].mem_addr < memaddr + i) |
1219 | i = exec_map[n].mem_addr - memaddr; |
1220 | } |
1221 | |
1222 | /* Now we know which file to use. |
1223 | Set up its pointer and transfer the data. */ |
1224 | if (xferfile) |
1225 | { |
1226 | if (*xferfile == 0) |
1227 | if (xferfile == &execfile) |
1228 | error ("No program file to examine."); |
1229 | else |
1230 | error ("No core dump file or running program to examine."); |
1231 | val = lseek (xferchan, fileptr, 0); |
1232 | if (val < 0) |
1233 | perror_with_name (*xferfile); |
1234 | val = myread (xferchan, myaddr, i); |
1235 | if (val < 0) |
1236 | perror_with_name (*xferfile); |
1237 | } |
1238 | /* If this address is for nonexistent memory, |
1239 | read zeros if reading, or do nothing if writing. */ |
1240 | else |
1241 | { |
1242 | bzero (myaddr, i); |
1243 | returnval = 1; |
1244 | } |
1245 | |
1246 | memaddr += i; |
1247 | myaddr += i; |
1248 | len -= i; |
1249 | } |
1250 | return returnval; |
1251 | } |
1252 | |
1253 | |
1254 | /* Here from info files command to print an address map. */ |
1255 | |
1256 | print_maps () |
1257 | { |
1258 | struct pmap ptrs[200]; |
1259 | int n; |
1260 | |
1261 | /* ID strings for core and executable file sections */ |
1262 | |
1263 | static char *idstr[] = |
1264 | { |
1265 | "0", "text", "data", "tdata", "bss", "tbss", |
1266 | "common", "ttext", "ctx", "tctx", "10", "11", "12", |
1267 | }; |
1268 | |
1269 | for (n = 0; n < n_core; n++) |
1270 | { |
1271 | core_map[n].which = 0; |
1272 | ptrs[n] = core_map[n]; |
1273 | } |
1274 | for (n = 0; n < n_exec; n++) |
1275 | { |
1276 | exec_map[n].which = 1; |
1277 | ptrs[n_core+n] = exec_map[n]; |
1278 | } |
1279 | |
1280 | qsort (ptrs, n_core + n_exec, sizeof *ptrs, ptr_cmp); |
1281 | |
1282 | for (n = 0; n < n_core + n_exec; n++) |
1283 | { |
1284 | struct pmap *p = &ptrs[n]; |
1285 | if (n > 0) |
1286 | { |
1287 | if (p->mem_addr < ptrs[n-1].mem_end) |
1288 | p->mem_addr = ptrs[n-1].mem_end; |
1289 | if (p->mem_addr >= p->mem_end) |
1290 | continue; |
1291 | } |
1292 | printf_filtered ("%08x .. %08x %-6s %s\n", |
1293 | p->mem_addr, p->mem_end, idstr[p->type], |
1294 | p->which ? execfile : corefile); |
1295 | } |
1296 | } |
1297 | |
1298 | /* Compare routine to put file sections in order. |
1299 | Sort into increasing order on address, and put core file sections |
1300 | before exec file sections if both files contain the same addresses. */ |
1301 | |
1302 | static ptr_cmp (a, b) |
1303 | struct pmap *a, *b; |
1304 | { |
1305 | if (a->mem_addr != b->mem_addr) return a->mem_addr - b->mem_addr; |
1306 | return a->which - b->which; |
1307 | } |
1308 | \f |
1309 | /* Trapped internal variables are used to handle special registers. |
1310 | A trapped i.v. calls a hook here every time it is dereferenced, |
1311 | to provide a new value for the variable, and it calls a hook here |
1312 | when a new value is assigned, to do something with the value. |
1313 | |
1314 | The vector registers are $vl, $vs, $vm, $vN, $VN (N in 0..7). |
1315 | The communication registers are $cN, $CN (N in 0..63). |
1316 | They not handled as regular registers because it's expensive to |
1317 | read them, and their size varies, and they have too many names. */ |
1318 | |
1319 | |
1320 | /* Return 1 if NAME is a trapped internal variable, else 0. */ |
1321 | |
1322 | int |
1323 | is_trapped_internalvar (name) |
1324 | char *name; |
1325 | { |
1326 | if ((name[0] == 'c' || name[0] == 'C') |
1327 | && name[1] >= '0' && name[1] <= '9' |
1328 | && (name[2] == '\0' |
1329 | || (name[2] >= '0' && name[2] <= '9' |
1330 | && name[3] == '\0' && name[1] != '0')) |
1331 | && atoi (&name[1]) < 64) return 1; |
1332 | |
1333 | if ((name[0] == 'v' || name[0] == 'V') |
1334 | && (((name[1] & -8) == '0' && name[2] == '\0') |
1335 | || !strcmp (name, "vl") |
1336 | || !strcmp (name, "vs") |
1337 | || !strcmp (name, "vm"))) |
1338 | return 1; |
1339 | else return 0; |
1340 | } |
1341 | |
1342 | /* Return the value of trapped internal variable VAR */ |
1343 | |
1344 | value |
1345 | value_of_trapped_internalvar (var) |
1346 | struct internalvar *var; |
1347 | { |
1348 | char *name = var->name; |
1349 | value val; |
1350 | struct type *type; |
1351 | long len = *read_vector_register (VL_REGNUM); |
1352 | if (len <= 0 || len > 128) len = 128; |
1353 | |
1354 | if (!strcmp (name, "vl")) |
1355 | { |
1356 | val = value_from_long (builtin_type_int, |
1357 | (LONGEST) *read_vector_register_1 (VL_REGNUM)); |
1358 | } |
1359 | else if (!strcmp (name, "vs")) |
1360 | { |
1361 | val = value_from_long (builtin_type_int, |
1362 | (LONGEST) *read_vector_register_1 (VS_REGNUM)); |
1363 | } |
1364 | else if (!strcmp (name, "vm")) |
1365 | { |
1366 | long vm[4]; |
1367 | long i, *p; |
1368 | bcopy (read_vector_register_1 (VM_REGNUM), vm, sizeof vm); |
1369 | type = vector_type (builtin_type_int, len); |
1370 | val = allocate_value (type); |
1371 | p = (long *) VALUE_CONTENTS (val); |
1372 | for (i = 0; i < len; i++) |
1373 | *p++ = !! (vm[3 - (i >> 5)] & (1 << (i & 037))); |
1374 | } |
1375 | else if (name[0] == 'V') |
1376 | { |
1377 | type = vector_type (builtin_type_long_long, len); |
1378 | val = allocate_value (type); |
1379 | bcopy (read_vector_register_1 (name[1] - '0'), |
1380 | VALUE_CONTENTS (val), TYPE_LENGTH (type)); |
1381 | } |
1382 | else if (name[0] == 'v') |
1383 | { |
1384 | long *p1, *p2; |
1385 | type = vector_type (builtin_type_long, len); |
1386 | val = allocate_value (type); |
1387 | p1 = read_vector_register_1 (name[1] - '0'); |
1388 | p2 = (long *) VALUE_CONTENTS (val); |
1389 | while (--len >= 0) {p1++; *p2++ = *p1++;} |
1390 | } |
1391 | |
1392 | else if (name[0] == 'c') |
1393 | val = value_from_long (builtin_type_int, |
1394 | read_comm_register (atoi (&name[1]))); |
1395 | else if (name[0] == 'C') |
1396 | val = value_from_long (builtin_type_long_long, |
1397 | read_comm_register (atoi (&name[1]))); |
1398 | |
1399 | VALUE_LVAL (val) = lval_internalvar; |
1400 | VALUE_INTERNALVAR (val) = var; |
1401 | return val; |
1402 | } |
1403 | |
1404 | /* Construct the type for a vector register's value -- |
1405 | array[LENGTH] of ELEMENT_TYPE. */ |
1406 | |
1407 | static struct type * |
1408 | vector_type (element_type, length) |
1409 | struct type *element_type; |
1410 | long length; |
1411 | { |
1412 | struct type *type = (struct type *) xmalloc (sizeof (struct type)); |
1413 | bzero (type, sizeof type); |
1414 | TYPE_CODE (type) = TYPE_CODE_ARRAY; |
1415 | TYPE_TARGET_TYPE (type) = element_type; |
1416 | TYPE_LENGTH (type) = length * TYPE_LENGTH (TYPE_TARGET_TYPE (type)); |
1417 | return type; |
1418 | } |
1419 | |
1420 | /* Handle a new value assigned to a trapped internal variable */ |
1421 | |
1422 | void |
1423 | set_trapped_internalvar (var, val, bitpos, bitsize, offset) |
1424 | struct internalvar *var; |
1425 | value val; |
1426 | int bitpos, bitsize, offset; |
1427 | { |
1428 | char *name = var->name; |
1429 | long long newval = value_as_long (val); |
1430 | |
1431 | if (!strcmp (name, "vl")) |
1432 | write_vector_register (VL_REGNUM, 0, newval); |
1433 | else if (!strcmp (name, "vs")) |
1434 | write_vector_register (VS_REGNUM, 0, newval); |
1435 | else if (name[0] == 'c' || name[0] == 'C') |
1436 | write_comm_register (atoi (&name[1]), newval); |
1437 | else if (!strcmp (name, "vm")) |
1438 | error ("can't assign to $vm"); |
1439 | else |
1440 | { |
1441 | offset /= bitsize / 8; |
1442 | write_vector_register (name[1] - '0', offset, newval); |
1443 | } |
1444 | } |
1445 | |
1446 | /* Print an integer value when no format was specified. gdb normally |
1447 | prints these values in decimal, but the the leading 0x80000000 of |
1448 | pointers produces intolerable 10-digit negative numbers. |
1449 | If it looks like an address, print it in hex instead. */ |
1450 | |
1451 | decout (stream, type, val) |
1452 | FILE *stream; |
1453 | struct type *type; |
1454 | LONGEST val; |
1455 | { |
1456 | long lv = val; |
1457 | |
1458 | switch (output_radix) |
1459 | { |
1460 | case 0: |
1461 | if ((lv == val || (unsigned) lv == val) |
1462 | && ((lv & 0xf0000000) == 0x80000000 |
1463 | || ((lv & 0xf0000000) == 0xf0000000 && lv < STACK_END_ADDR))) |
1464 | { |
1465 | fprintf_filtered (stream, "%#x", lv); |
1466 | return; |
1467 | } |
1468 | |
1469 | case 10: |
1470 | fprintf_filtered (stream, TYPE_UNSIGNED (type) ? "%llu" : "%lld", val); |
1471 | return; |
1472 | |
1473 | case 8: |
1474 | if (TYPE_LENGTH (type) <= sizeof lv) |
1475 | fprintf_filtered (stream, "%#o", lv); |
1476 | else |
1477 | fprintf_filtered (stream, "%#llo", val); |
1478 | return; |
1479 | |
1480 | case 16: |
1481 | if (TYPE_LENGTH (type) <= sizeof lv) |
1482 | fprintf_filtered (stream, "%#x", lv); |
1483 | else |
1484 | fprintf_filtered (stream, "%#llx", val); |
1485 | return; |
1486 | } |
1487 | } |
1488 | |
1489 | /* Change the default output radix to 10 or 16, or set it to 0 (heuristic). |
1490 | This command is mostly obsolete now that the print command allows |
1491 | formats to apply to aggregates, but is still handy occasionally. */ |
1492 | |
1493 | static void |
1494 | set_base_command (arg) |
1495 | char *arg; |
1496 | { |
1497 | int new_radix; |
1498 | |
1499 | if (!arg) |
1500 | output_radix = 0; |
1501 | else |
1502 | { |
1503 | new_radix = atoi (arg); |
1504 | if (new_radix != 10 && new_radix != 16 && new_radix != 8) |
1505 | error ("base must be 8, 10 or 16, or null"); |
1506 | else output_radix = new_radix; |
1507 | } |
1508 | } |
1509 | |
1510 | /* Turn pipelining on or off in the inferior. */ |
1511 | |
1512 | static void |
1513 | set_pipelining_command (arg) |
1514 | char *arg; |
1515 | { |
1516 | if (!arg) |
1517 | { |
1518 | sequential = !sequential; |
1519 | printf_filtered ("%s\n", sequential ? "off" : "on"); |
1520 | } |
1521 | else if (!strcmp (arg, "on")) |
1522 | sequential = 0; |
1523 | else if (!strcmp (arg, "off")) |
1524 | sequential = 1; |
1525 | else error ("valid args are `on', to allow instructions to overlap, or\n\ |
1526 | `off', to prevent it and thereby pinpoint exceptions."); |
1527 | } |
1528 | |
1529 | /* Enable, disable, or force parallel execution in the inferior. */ |
1530 | |
1531 | static void |
1532 | set_parallel_command (arg) |
1533 | char *arg; |
1534 | { |
1535 | struct rlimit rl; |
1536 | int prevparallel = parallel; |
1537 | |
1538 | if (!strncmp (arg, "fixed", strlen (arg))) |
1539 | parallel = 2; |
1540 | else if (!strcmp (arg, "on")) |
1541 | parallel = 1; |
1542 | else if (!strcmp (arg, "off")) |
1543 | parallel = 0; |
1544 | else error ("valid args are `on', to allow multiple threads, or\n\ |
1545 | `fixed', to force multiple threads, or\n\ |
1546 | `off', to run with one thread only."); |
1547 | |
1548 | if ((prevparallel == 0) != (parallel == 0) && inferior_pid) |
1549 | printf_filtered ("will take effect at next run.\n"); |
1550 | |
1551 | getrlimit (RLIMIT_CONCUR, &rl); |
1552 | rl.rlim_cur = parallel ? rl.rlim_max : 1; |
1553 | setrlimit (RLIMIT_CONCUR, &rl); |
1554 | |
1555 | if (inferior_pid) |
1556 | set_fixed_scheduling (inferior_pid, parallel == 2); |
1557 | } |
1558 | |
1559 | /* Add a new name for an existing command. */ |
1560 | |
1561 | static void |
1562 | alias_command (arg) |
1563 | char *arg; |
1564 | { |
1565 | static char *aliaserr = "usage is `alias NEW OLD', no args allowed"; |
1566 | char *newname = arg; |
1567 | struct cmd_list_element *new, *old; |
1568 | |
1569 | if (!arg) |
1570 | error_no_arg ("newname oldname"); |
1571 | |
1572 | new = lookup_cmd (&arg, cmdlist, "", -1); |
1573 | if (new && !strncmp (newname, new->name, strlen (new->name))) |
1574 | { |
1575 | newname = new->name; |
1576 | if (!(*arg == '-' |
1577 | || (*arg >= 'a' && *arg <= 'z') |
1578 | || (*arg >= 'A' && *arg <= 'Z') |
1579 | || (*arg >= '0' && *arg <= '9'))) |
1580 | error (aliaserr); |
1581 | } |
1582 | else |
1583 | { |
1584 | arg = newname; |
1585 | while (*arg == '-' |
1586 | || (*arg >= 'a' && *arg <= 'z') |
1587 | || (*arg >= 'A' && *arg <= 'Z') |
1588 | || (*arg >= '0' && *arg <= '9')) |
1589 | arg++; |
1590 | if (*arg != ' ' && *arg != '\t') |
1591 | error (aliaserr); |
1592 | *arg = '\0'; |
1593 | arg++; |
1594 | } |
1595 | |
1596 | old = lookup_cmd (&arg, cmdlist, "", 0); |
1597 | |
1598 | if (*arg != '\0') |
1599 | error (aliaserr); |
1600 | |
1601 | if (new && !strncmp (newname, new->name, strlen (new->name))) |
1602 | { |
1603 | char *tem; |
1604 | if (new->class == (int) class_user || new->class == (int) class_alias) |
1605 | tem = "Redefine command \"%s\"? "; |
1606 | else |
1607 | tem = "Really redefine built-in command \"%s\"? "; |
1608 | if (!query (tem, new->name)) |
1609 | error ("Command \"%s\" not redefined.", new->name); |
1610 | } |
1611 | |
1612 | add_com (newname, class_alias, old->function, old->doc); |
1613 | } |
1614 | |
1615 | |
1616 | |
1617 | /* Print the current thread number, and any threads with signals in the |
1618 | queue. */ |
1619 | |
1620 | thread_info () |
1621 | { |
1622 | struct threadpid *p; |
1623 | |
1624 | if (have_inferior_p ()) |
1625 | { |
1626 | ps.pi_buffer = (char *) &comm_registers; |
1627 | ps.pi_nbytes = sizeof comm_registers; |
1628 | ps.pi_offset = 0; |
1629 | ps.pi_thread = inferior_thread; |
1630 | ioctl (inferior_fd, PIXRDCREGS, &ps); |
1631 | } |
1632 | |
1633 | printf_filtered ("Current thread %d stopped with signal %d.%d (%s).\n", |
1634 | inferior_thread, stop_signal, stop_sigcode, |
1635 | subsig_name (stop_signal, stop_sigcode)); |
1636 | |
1637 | for (p = signal_stack; p->pid; p--) |
1638 | printf_filtered ("Thread %d stopped with signal %d.%d (%s).\n", |
1639 | p->thread, p->signo, p->subsig, |
1640 | subsig_name (p->signo, p->subsig)); |
1641 | |
1642 | if (iscrlbit (comm_registers.crctl.lbits.cc, 64+13)) |
1643 | printf_filtered ("New thread start pc %#x\n", |
1644 | (long) (comm_registers.crreg.pcpsw >> 32)); |
1645 | } |
1646 | |
1647 | /* Return string describing a signal.subcode number */ |
1648 | |
1649 | static char * |
1650 | subsig_name (signo, subcode) |
1651 | int signo, subcode; |
1652 | { |
1653 | static char *subsig4[] = { |
1654 | "error exit", "privileged instruction", "unknown", |
1655 | "unknown", "undefined opcode", |
1656 | 0}; |
1657 | static char *subsig5[] = {0, |
1658 | "breakpoint", "single step", "fork trap", "exec trap", "pfork trap", |
1659 | "join trap", "idle trap", "last thread", "wfork trap", |
1660 | "process breakpoint", "trap instruction", |
1661 | 0}; |
1662 | static char *subsig8[] = {0, |
1663 | "int overflow", "int divide check", "float overflow", |
1664 | "float divide check", "float underflow", "reserved operand", |
1665 | "sqrt error", "exp error", "ln error", "sin error", "cos error", |
1666 | 0}; |
1667 | static char *subsig10[] = {0, |
1668 | "invalid inward ring address", "invalid outward ring call", |
1669 | "invalid inward ring return", "invalid syscall gate", |
1670 | "invalid rtn frame length", "invalid comm reg address", |
1671 | "invalid trap gate", |
1672 | 0}; |
1673 | static char *subsig11[] = {0, |
1674 | "read access denied", "write access denied", "execute access denied", |
1675 | "segment descriptor fault", "page table fault", "data reference fault", |
1676 | "i/o access denied", "levt pte invalid", |
1677 | 0}; |
1678 | |
1679 | static char **subsig_list[] = |
1680 | {0, 0, 0, 0, subsig4, subsig5, 0, 0, subsig8, 0, subsig10, subsig11, 0}; |
1681 | |
1682 | int i; |
1683 | char *p = signo < NSIG ? sys_siglist[signo] : "unknown"; |
1684 | |
1685 | if (signo >= (sizeof subsig_list / sizeof *subsig_list) |
1686 | || !subsig_list[signo]) |
1687 | return p; |
1688 | for (i = 1; subsig_list[signo][i]; i++) |
1689 | if (i == subcode) |
1690 | return subsig_list[signo][subcode]; |
1691 | return p; |
1692 | } |
1693 | |
1694 | |
1695 | /* Print a compact display of thread status, essentially x/i $pc |
1696 | for all active threads. */ |
1697 | |
1698 | static void |
1699 | threadstat () |
1700 | { |
1701 | int t; |
1702 | |
1703 | for (t = 0; t < n_threads; t++) |
1704 | if (thread_state[t] == PI_TALIVE) |
1705 | { |
1706 | printf_filtered ("%d%c %08x%c %d.%d ", t, |
1707 | (t == inferior_thread ? '*' : ' '), thread_pc[t], |
1708 | (thread_is_in_kernel[t] ? '#' : ' '), |
1709 | thread_signal[t], thread_sigcode[t]); |
1710 | print_insn (thread_pc[t], stdout); |
1711 | printf_filtered ("\n"); |
1712 | } |
1713 | } |
1714 | |
1715 | /* Change the current thread to ARG. */ |
1716 | |
1717 | set_thread_command (arg) |
1718 | char *arg; |
1719 | { |
1720 | int thread; |
1721 | |
1722 | if (!arg) |
1723 | { |
1724 | threadstat (); |
1725 | return; |
1726 | } |
1727 | |
1728 | thread = parse_and_eval_address (arg); |
1729 | |
1730 | if (thread < 0 || thread > n_threads || thread_state[thread] != PI_TALIVE) |
1731 | error ("no such thread."); |
1732 | |
1733 | select_thread (thread); |
1734 | |
1735 | stop_pc = read_pc (); |
1736 | flush_cached_frames (); |
1737 | set_current_frame (create_new_frame (read_register (FP_REGNUM), |
1738 | read_pc ())); |
1739 | select_frame (get_current_frame (), 0); |
1740 | print_sel_frame (1); |
1741 | } |
1742 | |
1743 | /* Here on CONT command; gdb's dispatch address is changed to come here. |
1744 | Set global variable ALL_CONTINUE to tell resume() that it should |
1745 | start up all threads, and that a thread switch will not blow gdb's |
1746 | mind. */ |
1747 | |
1748 | static void |
1749 | convex_cont_command (proc_count_exp, from_tty) |
1750 | char *proc_count_exp; |
1751 | int from_tty; |
1752 | { |
1753 | all_continue = 1; |
1754 | cont_command (proc_count_exp, from_tty); |
1755 | } |
1756 | |
1757 | /* Here on 1CONT command. Resume only the current thread. */ |
1758 | |
1759 | one_cont_command (proc_count_exp, from_tty) |
1760 | char *proc_count_exp; |
1761 | int from_tty; |
1762 | { |
1763 | cont_command (proc_count_exp, from_tty); |
1764 | } |
1765 | |
1766 | /* Print the contents and lock bits of all communication registers, |
1767 | or just register ARG if ARG is a communication register, |
1768 | or the 3-word resource structure in memory at address ARG. */ |
1769 | |
1770 | comm_registers_info (arg) |
1771 | char *arg; |
1772 | { |
1773 | int i, regnum; |
1774 | |
1775 | if (arg) |
1776 | { |
7a67dd45 |
1777 | if (sscanf (arg, "0x%x", ®num) == 1 |
1778 | || sscanf (argc, "%d", ®num) == 1) |
4187119d |
1779 | { |
1780 | if (regnum > 0) |
1781 | regnum &= ~0x8000; |
1782 | } |
4187119d |
1783 | else if (sscanf (arg, "$c%d", ®num) == 1) |
1784 | ; |
1785 | else if (sscanf (arg, "$C%d", ®num) == 1) |
1786 | ; |
1787 | else |
1788 | regnum = parse_and_eval_address (arg); |
1789 | |
1790 | if (regnum >= 64) |
1791 | error ("%s: invalid register name.", arg); |
1792 | |
1793 | /* if we got a (user) address, examine the resource struct there */ |
1794 | |
1795 | if (regnum < 0) |
1796 | { |
1797 | static int buf[3]; |
1798 | read_memory (regnum, buf, sizeof buf); |
1799 | printf_filtered ("%08x %08x%08x%s\n", regnum, buf[1], buf[2], |
1800 | buf[0] & 0xff ? " locked" : ""); |
1801 | return; |
1802 | } |
1803 | } |
1804 | |
1805 | ps.pi_buffer = (char *) &comm_registers; |
1806 | ps.pi_nbytes = sizeof comm_registers; |
1807 | ps.pi_offset = 0; |
1808 | ps.pi_thread = inferior_thread; |
1809 | ioctl (inferior_fd, PIXRDCREGS, &ps); |
1810 | |
1811 | for (i = 0; i < 64; i++) |
1812 | if (!arg || i == regnum) |
1813 | printf_filtered ("%2d 0x8%03x %016llx%s\n", i, i, |
1814 | comm_registers.crreg.r4[i], |
1815 | (iscrlbit (comm_registers.crctl.lbits.cc, i) |
1816 | ? " locked" : "")); |
1817 | } |
1818 | |
1819 | /* Print the psw */ |
1820 | |
1821 | static void |
1822 | psw_info (arg) |
1823 | char *arg; |
1824 | { |
1825 | struct pswbit |
1826 | { |
1827 | int bit; |
1828 | int pos; |
1829 | char *text; |
1830 | }; |
1831 | |
1832 | static struct pswbit pswbit[] = |
1833 | { |
1834 | { 0x80000000, -1, "A carry" }, |
1835 | { 0x40000000, -1, "A integer overflow" }, |
1836 | { 0x20000000, -1, "A zero divide" }, |
1837 | { 0x10000000, -1, "Integer overflow enable" }, |
1838 | { 0x08000000, -1, "Trace" }, |
1839 | { 0x06000000, 25, "Frame length" }, |
1840 | { 0x01000000, -1, "Sequential" }, |
1841 | { 0x00800000, -1, "S carry" }, |
1842 | { 0x00400000, -1, "S integer overflow" }, |
1843 | { 0x00200000, -1, "S zero divide" }, |
1844 | { 0x00100000, -1, "Zero divide enable" }, |
1845 | { 0x00080000, -1, "Floating underflow" }, |
1846 | { 0x00040000, -1, "Floating overflow" }, |
1847 | { 0x00020000, -1, "Floating reserved operand" }, |
1848 | { 0x00010000, -1, "Floating zero divide" }, |
1849 | { 0x00008000, -1, "Floating error enable" }, |
1850 | { 0x00004000, -1, "Floating underflow enable" }, |
1851 | { 0x00002000, -1, "IEEE" }, |
1852 | { 0x00001000, -1, "Sequential stores" }, |
1853 | { 0x00000800, -1, "Intrinsic error" }, |
1854 | { 0x00000400, -1, "Intrinsic error enable" }, |
1855 | { 0x00000200, -1, "Trace thread creates" }, |
1856 | { 0x00000100, -1, "Thread init trap" }, |
1857 | { 0x000000e0, 5, "Reserved" }, |
1858 | { 0x0000001f, 0, "Intrinsic error code" }, |
1859 | {0, 0, 0}, |
1860 | }; |
1861 | |
1862 | long psw; |
4187119d |
1863 | struct pswbit *p; |
1864 | |
1865 | if (arg) |
1866 | psw = parse_and_eval_address (arg); |
1867 | else |
1868 | psw = read_register (PS_REGNUM); |
1869 | |
1870 | for (p = pswbit; p->bit; p++) |
1871 | { |
1872 | if (p->pos < 0) |
1873 | printf_filtered ("%08x %s %s\n", p->bit, |
1874 | (psw & p->bit) ? "yes" : "no ", p->text); |
1875 | else |
1876 | printf_filtered ("%08x %3d %s\n", p->bit, |
1877 | (psw & p->bit) >> p->pos, p->text); |
1878 | } |
1879 | } |
1880 | \f |
1881 | _initialize_convex_dep () |
1882 | { |
1883 | add_com ("alias", class_support, alias_command, |
1884 | "Add a new name for an existing command."); |
1885 | |
1886 | add_cmd ("base", class_vars, set_base_command, |
1887 | "Change the integer output radix to 8, 10 or 16\n\ |
1888 | or use just `set base' with no args to return to the ad-hoc default,\n\ |
1889 | which is 16 for integers that look like addresses, 10 otherwise.", |
1890 | &setlist); |
1891 | |
1892 | add_cmd ("pipeline", class_run, set_pipelining_command, |
1893 | "Enable or disable overlapped execution of instructions.\n\ |
1894 | With `set pipe off', exceptions are reported with\n\ |
1895 | $pc pointing at the instruction after the faulting one.\n\ |
1896 | The default is `set pipe on', which runs faster.", |
1897 | &setlist); |
1898 | |
1899 | add_cmd ("parallel", class_run, set_parallel_command, |
1900 | "Enable or disable multi-threaded execution of parallel code.\n\ |
1901 | `set parallel off' means run the program on a single CPU.\n\ |
1902 | `set parallel fixed' means run the program with all CPUs assigned to it.\n\ |
1903 | `set parallel on' means run the program on any CPUs that are available.", |
1904 | &setlist); |
1905 | |
1906 | add_com ("1cont", class_run, one_cont_command, |
1907 | "Continue the program, activating only the current thread.\n\ |
1908 | Args are the same as the `cont' command."); |
1909 | |
1910 | add_com ("thread", class_run, set_thread_command, |
1911 | "Change the current thread, the one under scrutiny and control.\n\ |
1912 | With no arg, show the active threads, the current one marked with *."); |
1913 | |
1914 | add_info ("threads", thread_info, |
1915 | "List status of active threads."); |
1916 | |
1917 | add_info ("comm-registers", comm_registers_info, |
1918 | "List communication registers and their contents.\n\ |
1919 | A communication register name as argument means describe only that register.\n\ |
1920 | An address as argument means describe the resource structure at that address.\n\ |
1921 | `Locked' means that the register has been sent to but not yet received from."); |
1922 | |
1923 | add_info ("psw", psw_info, |
1924 | "Display $ps, the processor status word, bit by bit.\n\ |
1925 | An argument means display that value's interpretation as a psw."); |
1926 | |
1927 | add_cmd ("convex", no_class, 0, "Convex-specific commands.\n\ |
1928 | 32-bit registers $pc $ps $sp $ap $fp $a1-5 $s0-7 $v0-7 $vl $vs $vm $c0-63\n\ |
1929 | 64-bit registers $S0-7 $V0-7 $C0-63\n\ |
1930 | \n\ |
1931 | info threads display info on stopped threads waiting to signal\n\ |
1932 | thread display list of active threads\n\ |
1933 | thread N select thread N (its registers, stack, memory, etc.)\n\ |
1934 | step, next, etc step selected thread only\n\ |
1935 | 1cont continue selected thread only\n\ |
1936 | cont continue all threads\n\ |
1937 | info comm-registers display contents of comm register(s) or a resource struct\n\ |
1938 | info psw display processor status word $ps\n\ |
1939 | set base N change integer radix used by `print' without a format\n\ |
1940 | set pipeline off exceptions are precise, $pc points after the faulting insn\n\ |
1941 | set pipeline on normal mode, $pc is somewhere ahead of faulting insn\n\ |
1942 | set parallel off program runs on a single CPU\n\ |
1943 | set parallel fixed all CPUs are assigned to the program\n\ |
1944 | set parallel on normal mode, parallel execution on random available CPUs\n\ |
1945 | ", |
1946 | &cmdlist); |
1947 | |
1948 | } |