1 /* Low level interface for debugging AIX 4.3+ pthreads.
3 Copyright (C) 1999, 2000, 2002, 2007, 2008 Free Software Foundation, Inc.
4 Written by Nick Duffek <nsd@redhat.com>.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* This module uses the libpthdebug.a library provided by AIX 4.3+ for
23 debugging pthread applications.
25 Some name prefix conventions:
26 pthdb_ provided by libpthdebug.a
27 pdc_ callbacks that this module provides to libpthdebug.a
28 pd_ variables or functions interfacing with libpthdebug.a
30 libpthdebug peculiarities:
32 - pthdb_ptid_pthread() is prototyped in <sys/pthdebug.h>, but
33 it's not documented, and after several calls it stops working
34 and causes other libpthdebug functions to fail.
36 - pthdb_tid_pthread() doesn't always work after
37 pthdb_session_update(), but it does work after cycling through
38 all threads using pthdb_pthread().
43 #include "gdb_assert.h"
44 #include "gdbthread.h"
50 #include "gdb_string.h"
54 #include <sys/types.h>
55 #include <sys/ptrace.h>
58 #include <sys/pthdebug.h>
60 /* Whether to emit debugging output. */
61 static int debug_aix_thread;
63 /* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */
64 #ifndef PTHDB_VERSION_3
65 #define pthdb_tid_t tid_t
68 /* Return whether to treat PID as a debuggable thread id. */
70 #define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0)
72 /* Build a thread ptid. */
73 #define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID)
75 /* Build and lwp ptid. */
76 #define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP)
78 /* pthdb_user_t value that we pass to pthdb functions. 0 causes
79 PTHDB_BAD_USER errors, so use 1. */
83 /* Success and failure values returned by pthdb callbacks. */
85 #define PDC_SUCCESS PTHDB_SUCCESS
86 #define PDC_FAILURE PTHDB_CALLBACK
88 /* Private data attached to each element in GDB's thread list. */
90 struct private_thread_info {
91 pthdb_pthread_t pdtid; /* thread's libpthdebug id */
92 pthdb_tid_t tid; /* kernel thread id */
95 /* Information about a thread of which libpthdebug is aware. */
98 pthdb_pthread_t pdtid;
103 /* This module's target-specific operations, active while pd_able is true. */
105 static struct target_ops aix_thread_ops;
107 /* Copy of the target over which ops is pushed. This is more
108 convenient than a pointer to deprecated_child_ops or core_ops,
109 because they lack current_target's default callbacks. */
111 static struct target_ops base_target;
113 /* Address of the function that libpthread will call when libpthdebug
114 is ready to be initialized. */
116 static CORE_ADDR pd_brk_addr;
118 /* Whether the current application is debuggable by pthdb. */
120 static int pd_able = 0;
122 /* Whether a threaded application is being debugged. */
124 static int pd_active = 0;
126 /* Whether the current architecture is 64-bit.
127 Only valid when pd_able is true. */
131 /* Forward declarations for pthdb callbacks. */
133 static int pdc_symbol_addrs (pthdb_user_t, pthdb_symbol_t *, int);
134 static int pdc_read_data (pthdb_user_t, void *, pthdb_addr_t, size_t);
135 static int pdc_write_data (pthdb_user_t, void *, pthdb_addr_t, size_t);
136 static int pdc_read_regs (pthdb_user_t user, pthdb_tid_t tid,
137 unsigned long long flags,
138 pthdb_context_t *context);
139 static int pdc_write_regs (pthdb_user_t user, pthdb_tid_t tid,
140 unsigned long long flags,
141 pthdb_context_t *context);
142 static int pdc_alloc (pthdb_user_t, size_t, void **);
143 static int pdc_realloc (pthdb_user_t, void *, size_t, void **);
144 static int pdc_dealloc (pthdb_user_t, void *);
146 /* pthdb callbacks. */
148 static pthdb_callbacks_t pd_callbacks = {
160 /* Current pthdb session. */
162 static pthdb_session_t pd_session;
164 /* Return a printable representation of pthdebug function return
168 pd_status2str (int status)
172 case PTHDB_SUCCESS: return "SUCCESS";
173 case PTHDB_NOSYS: return "NOSYS";
174 case PTHDB_NOTSUP: return "NOTSUP";
175 case PTHDB_BAD_VERSION: return "BAD_VERSION";
176 case PTHDB_BAD_USER: return "BAD_USER";
177 case PTHDB_BAD_SESSION: return "BAD_SESSION";
178 case PTHDB_BAD_MODE: return "BAD_MODE";
179 case PTHDB_BAD_FLAGS: return "BAD_FLAGS";
180 case PTHDB_BAD_CALLBACK: return "BAD_CALLBACK";
181 case PTHDB_BAD_POINTER: return "BAD_POINTER";
182 case PTHDB_BAD_CMD: return "BAD_CMD";
183 case PTHDB_BAD_PTHREAD: return "BAD_PTHREAD";
184 case PTHDB_BAD_ATTR: return "BAD_ATTR";
185 case PTHDB_BAD_MUTEX: return "BAD_MUTEX";
186 case PTHDB_BAD_MUTEXATTR: return "BAD_MUTEXATTR";
187 case PTHDB_BAD_COND: return "BAD_COND";
188 case PTHDB_BAD_CONDATTR: return "BAD_CONDATTR";
189 case PTHDB_BAD_RWLOCK: return "BAD_RWLOCK";
190 case PTHDB_BAD_RWLOCKATTR: return "BAD_RWLOCKATTR";
191 case PTHDB_BAD_KEY: return "BAD_KEY";
192 case PTHDB_BAD_PTID: return "BAD_PTID";
193 case PTHDB_BAD_TID: return "BAD_TID";
194 case PTHDB_CALLBACK: return "CALLBACK";
195 case PTHDB_CONTEXT: return "CONTEXT";
196 case PTHDB_HELD: return "HELD";
197 case PTHDB_NOT_HELD: return "NOT_HELD";
198 case PTHDB_MEMORY: return "MEMORY";
199 case PTHDB_NOT_PTHREADED: return "NOT_PTHREADED";
200 case PTHDB_SYMBOL: return "SYMBOL";
201 case PTHDB_NOT_AVAIL: return "NOT_AVAIL";
202 case PTHDB_INTERNAL: return "INTERNAL";
203 default: return "UNKNOWN";
207 /* A call to ptrace(REQ, ID, ...) just returned RET. Check for
208 exceptional conditions and either return nonlocally or else return
209 1 for success and 0 for failure. */
212 ptrace_check (int req, int id, int ret)
214 if (ret == 0 && !errno)
217 /* According to ptrace(2), ptrace may fail with EPERM if "the
218 Identifier parameter corresponds to a kernel thread which is
219 stopped in kernel mode and whose computational state cannot be
220 read or written." This happens quite often with register reads. */
227 if (ret == -1 && errno == EPERM)
229 if (debug_aix_thread)
230 fprintf_unfiltered (gdb_stdlog,
231 "ptrace (%d, %d) = %d (errno = %d)\n",
232 req, id, ret, errno);
233 return ret == -1 ? 0 : 1;
237 error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"),
238 req, id, ret, errno, safe_strerror (errno));
239 return 0; /* Not reached. */
242 /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */
245 ptrace64aix (int req, int id, long long addr, int data, int *buf)
248 return ptrace_check (req, id, ptracex (req, id, addr, data, buf));
251 /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */
254 ptrace32 (int req, int id, int *addr, int data, int *buf)
257 return ptrace_check (req, id,
258 ptrace (req, id, (int *) addr, data, buf));
261 /* If *PIDP is a composite process/thread id, convert it to a
265 pid_to_prc (ptid_t *ptidp)
271 *ptidp = pid_to_ptid (PIDGET (ptid));
274 /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
275 the address of SYMBOLS[<i>].name. */
278 pdc_symbol_addrs (pthdb_user_t user, pthdb_symbol_t *symbols, int count)
280 struct minimal_symbol *ms;
284 if (debug_aix_thread)
285 fprintf_unfiltered (gdb_stdlog,
286 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
287 user, (long) symbols, count);
289 for (i = 0; i < count; i++)
291 name = symbols[i].name;
292 if (debug_aix_thread)
293 fprintf_unfiltered (gdb_stdlog,
294 " symbols[%d].name = \"%s\"\n", i, name);
300 if (!(ms = lookup_minimal_symbol (name, NULL, NULL)))
302 if (debug_aix_thread)
303 fprintf_unfiltered (gdb_stdlog, " returning PDC_FAILURE\n");
306 symbols[i].addr = SYMBOL_VALUE_ADDRESS (ms);
308 if (debug_aix_thread)
309 fprintf_unfiltered (gdb_stdlog, " symbols[%d].addr = %s\n",
310 i, hex_string (symbols[i].addr));
312 if (debug_aix_thread)
313 fprintf_unfiltered (gdb_stdlog, " returning PDC_SUCCESS\n");
317 /* Read registers call back function should be able to read the
318 context information of a debuggee kernel thread from an active
319 process or from a core file. The information should be formatted
320 in context64 form for both 32-bit and 64-bit process.
321 If successful return 0, else non-zero is returned. */
324 pdc_read_regs (pthdb_user_t user,
326 unsigned long long flags,
327 pthdb_context_t *context)
329 /* This function doesn't appear to be used, so we could probably
330 just return 0 here. HOWEVER, if it is not defined, the OS will
331 complain and several thread debug functions will fail. In case
332 this is needed, I have implemented what I think it should do,
333 however this code is untested. */
335 uint64_t gprs64[ppc_num_gprs];
336 uint32_t gprs32[ppc_num_gprs];
337 double fprs[ppc_num_fprs];
338 struct ptxsprs sprs64;
339 struct ptsprs sprs32;
341 if (debug_aix_thread)
342 fprintf_unfiltered (gdb_stdlog, "pdc_read_regs tid=%d flags=%s\n",
343 (int) tid, hex_string (flags));
345 /* General-purpose registers. */
346 if (flags & PTHDB_FLAG_GPRS)
350 if (!ptrace64aix (PTT_READ_GPRS, tid,
351 (unsigned long) gprs64, 0, NULL))
352 memset (gprs64, 0, sizeof (gprs64));
353 memcpy (context->gpr, gprs64, sizeof(gprs64));
357 if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL))
358 memset (gprs32, 0, sizeof (gprs32));
359 memcpy (context->gpr, gprs32, sizeof(gprs32));
363 /* Floating-point registers. */
364 if (flags & PTHDB_FLAG_FPRS)
366 if (!ptrace32 (PTT_READ_FPRS, tid, (void *) fprs, 0, NULL))
367 memset (fprs, 0, sizeof (fprs));
368 memcpy (context->fpr, fprs, sizeof(fprs));
371 /* Special-purpose registers. */
372 if (flags & PTHDB_FLAG_SPRS)
376 if (!ptrace64aix (PTT_READ_SPRS, tid,
377 (unsigned long) &sprs64, 0, NULL))
378 memset (&sprs64, 0, sizeof (sprs64));
379 memcpy (&context->msr, &sprs64, sizeof(sprs64));
383 if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL))
384 memset (&sprs32, 0, sizeof (sprs32));
385 memcpy (&context->msr, &sprs32, sizeof(sprs32));
391 /* Write register function should be able to write requested context
392 information to specified debuggee's kernel thread id.
393 If successful return 0, else non-zero is returned. */
396 pdc_write_regs (pthdb_user_t user,
398 unsigned long long flags,
399 pthdb_context_t *context)
401 /* This function doesn't appear to be used, so we could probably
402 just return 0 here. HOWEVER, if it is not defined, the OS will
403 complain and several thread debug functions will fail. In case
404 this is needed, I have implemented what I think it should do,
405 however this code is untested. */
407 if (debug_aix_thread)
408 fprintf_unfiltered (gdb_stdlog, "pdc_write_regs tid=%d flags=%s\n",
409 (int) tid, hex_string (flags));
411 /* General-purpose registers. */
412 if (flags & PTHDB_FLAG_GPRS)
415 ptrace64aix (PTT_WRITE_GPRS, tid,
416 (unsigned long) context->gpr, 0, NULL);
418 ptrace32 (PTT_WRITE_GPRS, tid, (int *) context->gpr, 0, NULL);
421 /* Floating-point registers. */
422 if (flags & PTHDB_FLAG_FPRS)
424 ptrace32 (PTT_WRITE_FPRS, tid, (int *) context->fpr, 0, NULL);
427 /* Special-purpose registers. */
428 if (flags & PTHDB_FLAG_SPRS)
432 ptrace64aix (PTT_WRITE_SPRS, tid,
433 (unsigned long) &context->msr, 0, NULL);
437 ptrace32 (PTT_WRITE_SPRS, tid, (void *) &context->msr, 0, NULL);
443 /* pthdb callback: read LEN bytes from process ADDR into BUF. */
446 pdc_read_data (pthdb_user_t user, void *buf,
447 pthdb_addr_t addr, size_t len)
451 if (debug_aix_thread)
452 fprintf_unfiltered (gdb_stdlog,
453 "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
454 user, (long) buf, hex_string (addr), len);
456 status = target_read_memory (addr, buf, len);
457 ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE;
459 if (debug_aix_thread)
460 fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n",
461 status, pd_status2str (ret));
465 /* pthdb callback: write LEN bytes from BUF to process ADDR. */
468 pdc_write_data (pthdb_user_t user, void *buf,
469 pthdb_addr_t addr, size_t len)
473 if (debug_aix_thread)
474 fprintf_unfiltered (gdb_stdlog,
475 "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
476 user, (long) buf, hex_string (addr), len);
478 status = target_write_memory (addr, buf, len);
479 ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE;
481 if (debug_aix_thread)
482 fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n", status,
483 pd_status2str (ret));
487 /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
491 pdc_alloc (pthdb_user_t user, size_t len, void **bufp)
493 if (debug_aix_thread)
494 fprintf_unfiltered (gdb_stdlog,
495 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
496 user, len, (long) bufp);
497 *bufp = xmalloc (len);
498 if (debug_aix_thread)
499 fprintf_unfiltered (gdb_stdlog,
500 " malloc returned 0x%lx\n", (long) *bufp);
502 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
505 return *bufp ? PDC_SUCCESS : PDC_FAILURE;
508 /* pthdb callback: reallocate BUF, which was allocated by the alloc or
509 realloc callback, so that it contains LEN bytes, and store a
510 pointer to the result in BUFP. */
513 pdc_realloc (pthdb_user_t user, void *buf, size_t len, void **bufp)
515 if (debug_aix_thread)
516 fprintf_unfiltered (gdb_stdlog,
517 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
518 user, (long) buf, len, (long) bufp);
519 *bufp = xrealloc (buf, len);
520 if (debug_aix_thread)
521 fprintf_unfiltered (gdb_stdlog,
522 " realloc returned 0x%lx\n", (long) *bufp);
523 return *bufp ? PDC_SUCCESS : PDC_FAILURE;
526 /* pthdb callback: free BUF, which was allocated by the alloc or
530 pdc_dealloc (pthdb_user_t user, void *buf)
532 if (debug_aix_thread)
533 fprintf_unfiltered (gdb_stdlog,
534 "pdc_free (user = %ld, buf = 0x%lx)\n", user,
540 /* Return a printable representation of pthread STATE. */
543 state2str (pthdb_state_t state)
548 /* i18n: Like "Thread-Id %d, [state] idle" */
549 return _("idle"); /* being created */
551 /* i18n: Like "Thread-Id %d, [state] running" */
552 return _("running"); /* running */
554 /* i18n: Like "Thread-Id %d, [state] sleeping" */
555 return _("sleeping"); /* awaiting an event */
557 /* i18n: Like "Thread-Id %d, [state] ready" */
558 return _("ready"); /* runnable */
560 /* i18n: Like "Thread-Id %d, [state] finished" */
561 return _("finished"); /* awaiting a join/detach */
563 /* i18n: Like "Thread-Id %d, [state] unknown" */
568 /* qsort() comparison function for sorting pd_thread structs by pthid. */
571 pcmp (const void *p1v, const void *p2v)
573 struct pd_thread *p1 = (struct pd_thread *) p1v;
574 struct pd_thread *p2 = (struct pd_thread *) p2v;
575 return p1->pthid < p2->pthid ? -1 : p1->pthid > p2->pthid;
578 /* iterate_over_threads() callback for counting GDB threads. */
581 giter_count (struct thread_info *thread, void *countp)
587 /* iterate_over_threads() callback for accumulating GDB thread pids. */
590 giter_accum (struct thread_info *thread, void *bufp)
592 **(struct thread_info ***) bufp = thread;
593 (*(struct thread_info ***) bufp)++;
597 /* ptid comparison function */
600 ptid_cmp (ptid_t ptid1, ptid_t ptid2)
604 if (ptid_get_pid (ptid1) < ptid_get_pid (ptid2))
606 else if (ptid_get_pid (ptid1) > ptid_get_pid (ptid2))
608 else if (ptid_get_tid (ptid1) < ptid_get_tid (ptid2))
610 else if (ptid_get_tid (ptid1) > ptid_get_tid (ptid2))
612 else if (ptid_get_lwp (ptid1) < ptid_get_lwp (ptid2))
614 else if (ptid_get_lwp (ptid1) > ptid_get_lwp (ptid2))
620 /* qsort() comparison function for sorting thread_info structs by pid. */
623 gcmp (const void *t1v, const void *t2v)
625 struct thread_info *t1 = *(struct thread_info **) t1v;
626 struct thread_info *t2 = *(struct thread_info **) t2v;
627 return ptid_cmp (t1->ptid, t2->ptid);
630 /* Search through the list of all kernel threads for the thread
631 that has stopped on a SIGTRAP signal, and return its TID.
632 Return 0 if none found. */
635 get_signaled_thread (void)
637 struct thrdsinfo64 thrinf;
638 pthdb_tid_t ktid = 0;
641 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
642 extern int getthrds (pid_t, struct thrdsinfo64 *,
643 int, pthdb_tid_t *, int);
647 if (getthrds (PIDGET (inferior_ptid), &thrinf,
648 sizeof (thrinf), &ktid, 1) != 1)
651 if (thrinf.ti_cursig == SIGTRAP)
652 return thrinf.ti_tid;
655 /* Didn't find any thread stopped on a SIGTRAP signal. */
659 /* Synchronize GDB's thread list with libpthdebug's.
661 There are some benefits of doing this every time the inferior stops:
663 - allows users to run thread-specific commands without needing to
664 run "info threads" first
666 - helps pthdb_tid_pthread() work properly (see "libpthdebug
667 peculiarities" at the top of this module)
669 - simplifies the demands placed on libpthdebug, which seems to
670 have difficulty with certain call patterns */
673 sync_threadlists (void)
675 int cmd, status, infpid;
676 int pcount, psize, pi, gcount, gi;
677 struct pd_thread *pbuf;
678 struct thread_info **gbuf, **g, *thread;
679 pthdb_pthread_t pdtid;
683 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
687 pbuf = (struct pd_thread *) xmalloc (psize * sizeof *pbuf);
689 for (cmd = PTHDB_LIST_FIRST;; cmd = PTHDB_LIST_NEXT)
691 status = pthdb_pthread (pd_session, &pdtid, cmd);
692 if (status != PTHDB_SUCCESS || pdtid == PTHDB_INVALID_PTHREAD)
695 status = pthdb_pthread_ptid (pd_session, pdtid, &pthid);
696 if (status != PTHDB_SUCCESS || pthid == PTHDB_INVALID_PTID)
702 pbuf = (struct pd_thread *) xrealloc (pbuf,
703 psize * sizeof *pbuf);
705 pbuf[pcount].pdtid = pdtid;
706 pbuf[pcount].pthid = pthid;
710 for (pi = 0; pi < pcount; pi++)
712 status = pthdb_pthread_tid (pd_session, pbuf[pi].pdtid, &tid);
713 if (status != PTHDB_SUCCESS)
714 tid = PTHDB_INVALID_TID;
718 qsort (pbuf, pcount, sizeof *pbuf, pcmp);
720 /* Accumulate an array of GDB threads sorted by pid. */
723 iterate_over_threads (giter_count, &gcount);
724 g = gbuf = (struct thread_info **) xmalloc (gcount * sizeof *gbuf);
725 iterate_over_threads (giter_accum, &g);
726 qsort (gbuf, gcount, sizeof *gbuf, gcmp);
728 /* Apply differences between the two arrays to GDB's thread list. */
730 infpid = PIDGET (inferior_ptid);
731 for (pi = gi = 0; pi < pcount || gi < gcount;)
735 delete_thread (gbuf[gi]->ptid);
738 else if (gi == gcount)
740 thread = add_thread (BUILD_THREAD (pbuf[pi].pthid, infpid));
741 thread->private = xmalloc (sizeof (struct private_thread_info));
742 thread->private->pdtid = pbuf[pi].pdtid;
743 thread->private->tid = pbuf[pi].tid;
751 pptid = BUILD_THREAD (pbuf[pi].pthid, infpid);
752 gptid = gbuf[gi]->ptid;
753 pdtid = pbuf[pi].pdtid;
756 cmp_result = ptid_cmp (pptid, gptid);
760 gbuf[gi]->private->pdtid = pdtid;
761 gbuf[gi]->private->tid = tid;
765 else if (cmp_result > 0)
767 delete_thread (gptid);
772 thread = add_thread (pptid);
773 thread->private = xmalloc (sizeof (struct private_thread_info));
774 thread->private->pdtid = pdtid;
775 thread->private->tid = tid;
785 /* Iterate_over_threads() callback for locating a thread, using
786 the TID of its associated kernel thread. */
789 iter_tid (struct thread_info *thread, void *tidp)
791 const pthdb_tid_t tid = *(pthdb_tid_t *)tidp;
793 return (thread->private->tid == tid);
796 /* Synchronize libpthdebug's state with the inferior and with GDB,
797 generate a composite process/thread <pid> for the current thread,
798 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
801 pd_update (int set_infpid)
806 struct thread_info *thread = NULL;
809 return inferior_ptid;
811 status = pthdb_session_update (pd_session);
812 if (status != PTHDB_SUCCESS)
813 return inferior_ptid;
817 /* Define "current thread" as one that just received a trap signal. */
819 tid = get_signaled_thread ();
821 thread = iterate_over_threads (iter_tid, &tid);
823 ptid = inferior_ptid;
828 inferior_ptid = ptid;
833 /* Try to start debugging threads in the current process.
834 If successful and SET_INFPID, set inferior_ptid to reflect the
838 pd_activate (int set_infpid)
842 status = pthdb_session_init (PD_USER, arch64 ? PEM_64BIT : PEM_32BIT,
843 PTHDB_FLAG_REGS, &pd_callbacks,
845 if (status != PTHDB_SUCCESS)
847 return inferior_ptid;
850 return pd_update (set_infpid);
853 /* Undo the effects of pd_activate(). */
860 pthdb_session_destroy (pd_session);
862 pid_to_prc (&inferior_ptid);
866 /* An object file has just been loaded. Check whether the current
867 application is pthreaded, and if so, prepare for thread debugging. */
874 struct minimal_symbol *ms;
876 /* Don't initialize twice. */
880 /* Check application word size. */
881 arch64 = register_size (current_gdbarch, 0) == 8;
883 /* Check whether the application is pthreaded. */
885 status = pthdb_session_pthreaded (PD_USER, PTHDB_FLAG_REGS,
886 &pd_callbacks, &stub_name);
887 if ((status != PTHDB_SUCCESS &&
888 status != PTHDB_NOT_PTHREADED) || !stub_name)
891 /* Set a breakpoint on the returned stub function. */
892 if (!(ms = lookup_minimal_symbol (stub_name, NULL, NULL)))
894 pd_brk_addr = SYMBOL_VALUE_ADDRESS (ms);
895 if (!create_thread_event_breakpoint (pd_brk_addr))
898 /* Prepare for thread debugging. */
899 base_target = current_target;
900 push_target (&aix_thread_ops);
903 /* If we're debugging a core file or an attached inferior, the
904 pthread library may already have been initialized, so try to
905 activate thread debugging. */
909 /* Undo the effects of pd_enable(). */
919 unpush_target (&aix_thread_ops);
922 /* new_objfile observer callback.
924 If OBJFILE is non-null, check whether a threaded application is
925 being debugged, and if so, prepare for thread debugging.
927 If OBJFILE is null, stop debugging threads. */
930 new_objfile (struct objfile *objfile)
938 /* Attach to process specified by ARGS. */
941 aix_thread_attach (char *args, int from_tty)
943 base_target.to_attach (args, from_tty);
947 /* Detach from the process attached to by aix_thread_attach(). */
950 aix_thread_detach (char *args, int from_tty)
953 base_target.to_detach (args, from_tty);
956 /* Tell the inferior process to continue running thread PID if != -1
957 and all threads otherwise. */
960 aix_thread_resume (ptid_t ptid, int step, enum target_signal sig)
962 struct thread_info *thread;
967 struct cleanup *cleanup = save_inferior_ptid ();
968 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
969 base_target.to_resume (ptid, step, sig);
970 do_cleanups (cleanup);
974 thread = find_thread_pid (ptid);
976 error (_("aix-thread resume: unknown pthread %ld"),
979 tid[0] = thread->private->tid;
980 if (tid[0] == PTHDB_INVALID_TID)
981 error (_("aix-thread resume: no tid for pthread %ld"),
986 ptrace64aix (PTT_CONTINUE, tid[0], 1,
987 target_signal_to_host (sig), (void *) tid);
989 ptrace32 (PTT_CONTINUE, tid[0], (int *) 1,
990 target_signal_to_host (sig), (void *) tid);
994 /* Wait for thread/process ID if != -1 or for any thread otherwise.
995 If an error occurs, return -1, else return the pid of the stopped
999 aix_thread_wait (ptid_t ptid, struct target_waitstatus *status)
1001 struct cleanup *cleanup = save_inferior_ptid ();
1005 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
1006 ptid = base_target.to_wait (ptid, status);
1007 do_cleanups (cleanup);
1009 if (PIDGET (ptid) == -1)
1010 return pid_to_ptid (-1);
1012 /* Check whether libpthdebug might be ready to be initialized. */
1013 if (!pd_active && status->kind == TARGET_WAITKIND_STOPPED
1014 && status->value.sig == TARGET_SIGNAL_TRAP)
1016 struct regcache *regcache = get_thread_regcache (ptid);
1017 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1019 if (regcache_read_pc (regcache)
1020 - gdbarch_decr_pc_after_break (gdbarch) == pd_brk_addr)
1021 return pd_activate (0);
1024 return pd_update (0);
1027 /* Record that the 64-bit general-purpose registers contain VALS. */
1030 supply_gprs64 (struct regcache *regcache, uint64_t *vals)
1032 struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
1035 for (regno = 0; regno < ppc_num_gprs; regno++)
1036 regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + regno,
1037 (char *) (vals + regno));
1040 /* Record that 32-bit register REGNO contains VAL. */
1043 supply_reg32 (struct regcache *regcache, int regno, uint32_t val)
1045 regcache_raw_supply (regcache, regno, (char *) &val);
1048 /* Record that the floating-point registers contain VALS. */
1051 supply_fprs (struct regcache *regcache, double *vals)
1053 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1054 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1057 /* This function should never be called on architectures without
1058 floating-point registers. */
1059 gdb_assert (ppc_floating_point_unit_p (gdbarch));
1061 for (regno = 0; regno < ppc_num_fprs; regno++)
1062 regcache_raw_supply (regcache, regno + tdep->ppc_fp0_regnum,
1063 (char *) (vals + regno));
1066 /* Predicate to test whether given register number is a "special" register. */
1068 special_register_p (struct gdbarch *gdbarch, int regno)
1070 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1072 return regno == gdbarch_pc_regnum (gdbarch)
1073 || regno == tdep->ppc_ps_regnum
1074 || regno == tdep->ppc_cr_regnum
1075 || regno == tdep->ppc_lr_regnum
1076 || regno == tdep->ppc_ctr_regnum
1077 || regno == tdep->ppc_xer_regnum
1078 || (tdep->ppc_fpscr_regnum >= 0 && regno == tdep->ppc_fpscr_regnum)
1079 || (tdep->ppc_mq_regnum >= 0 && regno == tdep->ppc_mq_regnum);
1083 /* Record that the special registers contain the specified 64-bit and
1087 supply_sprs64 (struct regcache *regcache,
1088 uint64_t iar, uint64_t msr, uint32_t cr,
1089 uint64_t lr, uint64_t ctr, uint32_t xer,
1092 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1093 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1095 regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch),
1097 regcache_raw_supply (regcache, tdep->ppc_ps_regnum, (char *) &msr);
1098 regcache_raw_supply (regcache, tdep->ppc_cr_regnum, (char *) &cr);
1099 regcache_raw_supply (regcache, tdep->ppc_lr_regnum, (char *) &lr);
1100 regcache_raw_supply (regcache, tdep->ppc_ctr_regnum, (char *) &ctr);
1101 regcache_raw_supply (regcache, tdep->ppc_xer_regnum, (char *) &xer);
1102 if (tdep->ppc_fpscr_regnum >= 0)
1103 regcache_raw_supply (regcache, tdep->ppc_fpscr_regnum,
1107 /* Record that the special registers contain the specified 32-bit
1111 supply_sprs32 (struct regcache *regcache,
1112 uint32_t iar, uint32_t msr, uint32_t cr,
1113 uint32_t lr, uint32_t ctr, uint32_t xer,
1116 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1117 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1119 regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch),
1121 regcache_raw_supply (regcache, tdep->ppc_ps_regnum, (char *) &msr);
1122 regcache_raw_supply (regcache, tdep->ppc_cr_regnum, (char *) &cr);
1123 regcache_raw_supply (regcache, tdep->ppc_lr_regnum, (char *) &lr);
1124 regcache_raw_supply (regcache, tdep->ppc_ctr_regnum, (char *) &ctr);
1125 regcache_raw_supply (regcache, tdep->ppc_xer_regnum, (char *) &xer);
1126 if (tdep->ppc_fpscr_regnum >= 0)
1127 regcache_raw_supply (regcache, tdep->ppc_fpscr_regnum,
1131 /* Fetch all registers from pthread PDTID, which doesn't have a kernel
1134 There's no way to query a single register from a non-kernel
1135 pthread, so there's no need for a single-register version of this
1139 fetch_regs_user_thread (struct regcache *regcache, pthdb_pthread_t pdtid)
1141 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1142 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1144 pthdb_context_t ctx;
1146 if (debug_aix_thread)
1147 fprintf_unfiltered (gdb_stdlog,
1148 "fetch_regs_user_thread %lx\n", (long) pdtid);
1149 status = pthdb_pthread_context (pd_session, pdtid, &ctx);
1150 if (status != PTHDB_SUCCESS)
1151 error (_("aix-thread: fetch_registers: pthdb_pthread_context returned %s"),
1152 pd_status2str (status));
1154 /* General-purpose registers. */
1157 supply_gprs64 (regcache, ctx.gpr);
1159 for (i = 0; i < ppc_num_gprs; i++)
1160 supply_reg32 (regcache, tdep->ppc_gp0_regnum + i, ctx.gpr[i]);
1162 /* Floating-point registers. */
1164 if (ppc_floating_point_unit_p (gdbarch))
1165 supply_fprs (regcache, ctx.fpr);
1167 /* Special registers. */
1170 supply_sprs64 (regcache, ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr,
1171 ctx.xer, ctx.fpscr);
1173 supply_sprs32 (regcache, ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr,
1174 ctx.xer, ctx.fpscr);
1177 /* Fetch register REGNO if != -1 or all registers otherwise from
1180 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1181 SPRs, but there's no way to query individual registers within those
1182 groups. Therefore, if REGNO != -1, this function fetches an entire
1185 Unfortunately, kernel thread register queries often fail with
1186 EPERM, indicating that the thread is in kernel space. This breaks
1187 backtraces of threads other than the current one. To make that
1188 breakage obvious without throwing an error to top level (which is
1189 bad e.g. during "info threads" output), zero registers that can't
1193 fetch_regs_kernel_thread (struct regcache *regcache, int regno,
1196 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1197 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1198 uint64_t gprs64[ppc_num_gprs];
1199 uint32_t gprs32[ppc_num_gprs];
1200 double fprs[ppc_num_fprs];
1201 struct ptxsprs sprs64;
1202 struct ptsprs sprs32;
1205 if (debug_aix_thread)
1206 fprintf_unfiltered (gdb_stdlog,
1207 "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
1208 (long) tid, regno, arch64);
1210 /* General-purpose registers. */
1212 || (tdep->ppc_gp0_regnum <= regno
1213 && regno < tdep->ppc_gp0_regnum + ppc_num_gprs))
1217 if (!ptrace64aix (PTT_READ_GPRS, tid,
1218 (unsigned long) gprs64, 0, NULL))
1219 memset (gprs64, 0, sizeof (gprs64));
1220 supply_gprs64 (regcache, gprs64);
1224 if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL))
1225 memset (gprs32, 0, sizeof (gprs32));
1226 for (i = 0; i < ppc_num_gprs; i++)
1227 supply_reg32 (regcache, tdep->ppc_gp0_regnum + i, gprs32[i]);
1231 /* Floating-point registers. */
1233 if (ppc_floating_point_unit_p (gdbarch)
1235 || (regno >= tdep->ppc_fp0_regnum
1236 && regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
1238 if (!ptrace32 (PTT_READ_FPRS, tid, (void *) fprs, 0, NULL))
1239 memset (fprs, 0, sizeof (fprs));
1240 supply_fprs (regcache, fprs);
1243 /* Special-purpose registers. */
1245 if (regno == -1 || special_register_p (gdbarch, regno))
1249 if (!ptrace64aix (PTT_READ_SPRS, tid,
1250 (unsigned long) &sprs64, 0, NULL))
1251 memset (&sprs64, 0, sizeof (sprs64));
1252 supply_sprs64 (regcache, sprs64.pt_iar, sprs64.pt_msr,
1253 sprs64.pt_cr, sprs64.pt_lr, sprs64.pt_ctr,
1254 sprs64.pt_xer, sprs64.pt_fpscr);
1258 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1260 if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL))
1261 memset (&sprs32, 0, sizeof (sprs32));
1262 supply_sprs32 (regcache, sprs32.pt_iar, sprs32.pt_msr, sprs32.pt_cr,
1263 sprs32.pt_lr, sprs32.pt_ctr, sprs32.pt_xer,
1266 if (tdep->ppc_mq_regnum >= 0)
1267 regcache_raw_supply (regcache, tdep->ppc_mq_regnum,
1268 (char *) &sprs32.pt_mq);
1273 /* Fetch register REGNO if != -1 or all registers otherwise in the
1274 thread/process specified by inferior_ptid. */
1277 aix_thread_fetch_registers (struct regcache *regcache, int regno)
1279 struct thread_info *thread;
1282 if (!PD_TID (inferior_ptid))
1283 base_target.to_fetch_registers (regcache, regno);
1286 thread = find_thread_pid (inferior_ptid);
1287 tid = thread->private->tid;
1289 if (tid == PTHDB_INVALID_TID)
1290 fetch_regs_user_thread (regcache, thread->private->pdtid);
1292 fetch_regs_kernel_thread (regcache, regno, tid);
1296 /* Store the gp registers into an array of uint32_t or uint64_t. */
1299 fill_gprs64 (const struct regcache *regcache, uint64_t *vals)
1301 struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
1304 for (regno = 0; regno < ppc_num_gprs; regno++)
1305 if (regcache_valid_p (regcache, tdep->ppc_gp0_regnum + regno))
1306 regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + regno,
1311 fill_gprs32 (const struct regcache *regcache, uint32_t *vals)
1313 struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
1316 for (regno = 0; regno < ppc_num_gprs; regno++)
1317 if (regcache_valid_p (regcache, tdep->ppc_gp0_regnum + regno))
1318 regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + regno,
1322 /* Store the floating point registers into a double array. */
1324 fill_fprs (const struct regcache *regcache, double *vals)
1326 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1327 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1330 /* This function should never be called on architectures without
1331 floating-point registers. */
1332 gdb_assert (ppc_floating_point_unit_p (gdbarch));
1334 for (regno = tdep->ppc_fp0_regnum;
1335 regno < tdep->ppc_fp0_regnum + ppc_num_fprs;
1337 if (regcache_valid_p (regcache, regno))
1338 regcache_raw_collect (regcache, regno, vals + regno);
1341 /* Store the special registers into the specified 64-bit and 32-bit
1345 fill_sprs64 (const struct regcache *regcache,
1346 uint64_t *iar, uint64_t *msr, uint32_t *cr,
1347 uint64_t *lr, uint64_t *ctr, uint32_t *xer,
1350 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1351 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1353 /* Verify that the size of the size of the IAR buffer is the
1354 same as the raw size of the PC (in the register cache). If
1355 they're not, then either GDB has been built incorrectly, or
1356 there's some other kind of internal error. To be really safe,
1357 we should check all of the sizes. */
1358 gdb_assert (sizeof (*iar) == register_size
1359 (gdbarch, gdbarch_pc_regnum (gdbarch)));
1361 if (regcache_valid_p (regcache, gdbarch_pc_regnum (gdbarch)))
1362 regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch), iar);
1363 if (regcache_valid_p (regcache, tdep->ppc_ps_regnum))
1364 regcache_raw_collect (regcache, tdep->ppc_ps_regnum, msr);
1365 if (regcache_valid_p (regcache, tdep->ppc_cr_regnum))
1366 regcache_raw_collect (regcache, tdep->ppc_cr_regnum, cr);
1367 if (regcache_valid_p (regcache, tdep->ppc_lr_regnum))
1368 regcache_raw_collect (regcache, tdep->ppc_lr_regnum, lr);
1369 if (regcache_valid_p (regcache, tdep->ppc_ctr_regnum))
1370 regcache_raw_collect (regcache, tdep->ppc_ctr_regnum, ctr);
1371 if (regcache_valid_p (regcache, tdep->ppc_xer_regnum))
1372 regcache_raw_collect (regcache, tdep->ppc_xer_regnum, xer);
1373 if (tdep->ppc_fpscr_regnum >= 0
1374 && regcache_valid_p (regcache, tdep->ppc_fpscr_regnum))
1375 regcache_raw_collect (regcache, tdep->ppc_fpscr_regnum, fpscr);
1379 fill_sprs32 (const struct regcache *regcache,
1380 uint32_t *iar, uint32_t *msr, uint32_t *cr,
1381 uint32_t *lr, uint32_t *ctr, uint32_t *xer,
1384 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1385 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1387 /* Verify that the size of the size of the IAR buffer is the
1388 same as the raw size of the PC (in the register cache). If
1389 they're not, then either GDB has been built incorrectly, or
1390 there's some other kind of internal error. To be really safe,
1391 we should check all of the sizes. */
1392 gdb_assert (sizeof (*iar) == register_size (gdbarch,
1393 gdbarch_pc_regnum (gdbarch)));
1395 if (regcache_valid_p (regcache, gdbarch_pc_regnum (gdbarch)))
1396 regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch), iar);
1397 if (regcache_valid_p (regcache, tdep->ppc_ps_regnum))
1398 regcache_raw_collect (regcache, tdep->ppc_ps_regnum, msr);
1399 if (regcache_valid_p (regcache, tdep->ppc_cr_regnum))
1400 regcache_raw_collect (regcache, tdep->ppc_cr_regnum, cr);
1401 if (regcache_valid_p (regcache, tdep->ppc_lr_regnum))
1402 regcache_raw_collect (regcache, tdep->ppc_lr_regnum, lr);
1403 if (regcache_valid_p (regcache, tdep->ppc_ctr_regnum))
1404 regcache_raw_collect (regcache, tdep->ppc_ctr_regnum, ctr);
1405 if (regcache_valid_p (regcache, tdep->ppc_xer_regnum))
1406 regcache_raw_collect (regcache, tdep->ppc_xer_regnum, xer);
1407 if (tdep->ppc_fpscr_regnum >= 0
1408 && regcache_valid_p (regcache, tdep->ppc_fpscr_regnum))
1409 regcache_raw_collect (regcache, tdep->ppc_fpscr_regnum, fpscr);
1412 /* Store all registers into pthread PDTID, which doesn't have a kernel
1415 It's possible to store a single register into a non-kernel pthread,
1416 but I doubt it's worth the effort. */
1419 store_regs_user_thread (const struct regcache *regcache, pthdb_pthread_t pdtid)
1421 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1422 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1424 pthdb_context_t ctx;
1429 if (debug_aix_thread)
1430 fprintf_unfiltered (gdb_stdlog,
1431 "store_regs_user_thread %lx\n", (long) pdtid);
1433 /* Retrieve the thread's current context for its non-register
1435 status = pthdb_pthread_context (pd_session, pdtid, &ctx);
1436 if (status != PTHDB_SUCCESS)
1437 error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"),
1438 pd_status2str (status));
1440 /* Collect general-purpose register values from the regcache. */
1442 for (i = 0; i < ppc_num_gprs; i++)
1443 if (regcache_valid_p (regcache, tdep->ppc_gp0_regnum + i))
1447 regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + i,
1453 regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + i,
1459 /* Collect floating-point register values from the regcache. */
1460 if (ppc_floating_point_unit_p (gdbarch))
1461 fill_fprs (regcache, ctx.fpr);
1463 /* Special registers (always kept in ctx as 64 bits). */
1466 fill_sprs64 (regcache, &ctx.iar, &ctx.msr, &ctx.cr, &ctx.lr, &ctx.ctr,
1467 &ctx.xer, &ctx.fpscr);
1471 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1472 Solution: use 32-bit temp variables. */
1473 uint32_t tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer,
1476 fill_sprs32 (regcache, &tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr, &tmp_ctr,
1477 &tmp_xer, &tmp_fpscr);
1478 if (regcache_valid_p (regcache, gdbarch_pc_regnum (gdbarch)))
1480 if (regcache_valid_p (regcache, tdep->ppc_ps_regnum))
1482 if (regcache_valid_p (regcache, tdep->ppc_cr_regnum))
1484 if (regcache_valid_p (regcache, tdep->ppc_lr_regnum))
1486 if (regcache_valid_p (regcache, tdep->ppc_ctr_regnum))
1488 if (regcache_valid_p (regcache, tdep->ppc_xer_regnum))
1490 if (regcache_valid_p (regcache, tdep->ppc_xer_regnum))
1491 ctx.fpscr = tmp_fpscr;
1494 status = pthdb_pthread_setcontext (pd_session, pdtid, &ctx);
1495 if (status != PTHDB_SUCCESS)
1496 error (_("aix-thread: store_registers: pthdb_pthread_setcontext returned %s"),
1497 pd_status2str (status));
1500 /* Store register REGNO if != -1 or all registers otherwise into
1503 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1504 SPRs, but there's no way to set individual registers within those
1505 groups. Therefore, if REGNO != -1, this function stores an entire
1509 store_regs_kernel_thread (const struct regcache *regcache, int regno,
1512 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1513 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1514 uint64_t gprs64[ppc_num_gprs];
1515 uint32_t gprs32[ppc_num_gprs];
1516 double fprs[ppc_num_fprs];
1517 struct ptxsprs sprs64;
1518 struct ptsprs sprs32;
1521 if (debug_aix_thread)
1522 fprintf_unfiltered (gdb_stdlog,
1523 "store_regs_kernel_thread tid=%lx regno=%d\n",
1526 /* General-purpose registers. */
1528 || (tdep->ppc_gp0_regnum <= regno
1529 && regno < tdep->ppc_gp0_regnum + ppc_num_fprs))
1533 /* Pre-fetch: some regs may not be in the cache. */
1534 ptrace64aix (PTT_READ_GPRS, tid, (unsigned long) gprs64, 0, NULL);
1535 fill_gprs64 (regcache, gprs64);
1536 ptrace64aix (PTT_WRITE_GPRS, tid, (unsigned long) gprs64, 0, NULL);
1540 /* Pre-fetch: some regs may not be in the cache. */
1541 ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL);
1542 fill_gprs32 (regcache, gprs32);
1543 ptrace32 (PTT_WRITE_GPRS, tid, gprs32, 0, NULL);
1547 /* Floating-point registers. */
1549 if (ppc_floating_point_unit_p (gdbarch)
1551 || (regno >= tdep->ppc_fp0_regnum
1552 && regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
1554 /* Pre-fetch: some regs may not be in the cache. */
1555 ptrace32 (PTT_READ_FPRS, tid, (void *) fprs, 0, NULL);
1556 fill_fprs (regcache, fprs);
1557 ptrace32 (PTT_WRITE_FPRS, tid, (void *) fprs, 0, NULL);
1560 /* Special-purpose registers. */
1562 if (regno == -1 || special_register_p (gdbarch, regno))
1566 /* Pre-fetch: some registers won't be in the cache. */
1567 ptrace64aix (PTT_READ_SPRS, tid,
1568 (unsigned long) &sprs64, 0, NULL);
1569 fill_sprs64 (regcache, &sprs64.pt_iar, &sprs64.pt_msr,
1570 &sprs64.pt_cr, &sprs64.pt_lr, &sprs64.pt_ctr,
1571 &sprs64.pt_xer, &sprs64.pt_fpscr);
1572 ptrace64aix (PTT_WRITE_SPRS, tid,
1573 (unsigned long) &sprs64, 0, NULL);
1577 /* The contents of "struct ptspr" were declared as "unsigned
1578 long" up to AIX 5.2, but are "unsigned int" since 5.3.
1579 Use temporaries to work around this problem. Also, add an
1580 assert here to make sure we fail if the system header files
1581 use "unsigned long", and the size of that type is not what
1582 the headers expect. */
1583 uint32_t tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer,
1586 gdb_assert (sizeof (sprs32.pt_iar) == 4);
1588 /* Pre-fetch: some registers won't be in the cache. */
1589 ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL);
1591 fill_sprs32 (regcache, &tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr,
1592 &tmp_ctr, &tmp_xer, &tmp_fpscr);
1594 sprs32.pt_iar = tmp_iar;
1595 sprs32.pt_msr = tmp_msr;
1596 sprs32.pt_cr = tmp_cr;
1597 sprs32.pt_lr = tmp_lr;
1598 sprs32.pt_ctr = tmp_ctr;
1599 sprs32.pt_xer = tmp_xer;
1600 sprs32.pt_fpscr = tmp_fpscr;
1602 if (tdep->ppc_mq_regnum >= 0)
1603 if (regcache_valid_p (regcache, tdep->ppc_mq_regnum))
1604 regcache_raw_collect (regcache, tdep->ppc_mq_regnum,
1607 ptrace32 (PTT_WRITE_SPRS, tid, (int *) &sprs32, 0, NULL);
1612 /* Store gdb's current view of the register set into the
1613 thread/process specified by inferior_ptid. */
1616 aix_thread_store_registers (struct regcache *regcache, int regno)
1618 struct thread_info *thread;
1621 if (!PD_TID (inferior_ptid))
1622 base_target.to_store_registers (regcache, regno);
1625 thread = find_thread_pid (inferior_ptid);
1626 tid = thread->private->tid;
1628 if (tid == PTHDB_INVALID_TID)
1629 store_regs_user_thread (regcache, thread->private->pdtid);
1631 store_regs_kernel_thread (regcache, regno, tid);
1635 /* Attempt a transfer all LEN bytes starting at OFFSET between the
1636 inferior's OBJECT:ANNEX space and GDB's READBUF/WRITEBUF buffer.
1637 Return the number of bytes actually transferred. */
1640 aix_thread_xfer_partial (struct target_ops *ops, enum target_object object,
1641 const char *annex, gdb_byte *readbuf,
1642 const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
1644 struct cleanup *old_chain = save_inferior_ptid ();
1647 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
1648 xfer = base_target.to_xfer_partial (ops, object, annex,
1649 readbuf, writebuf, offset, len);
1651 do_cleanups (old_chain);
1655 /* Kill and forget about the inferior process. */
1658 aix_thread_kill (void)
1660 struct cleanup *cleanup = save_inferior_ptid ();
1662 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
1663 base_target.to_kill ();
1664 do_cleanups (cleanup);
1667 /* Clean up after the inferior exits. */
1670 aix_thread_mourn_inferior (void)
1673 base_target.to_mourn_inferior ();
1676 /* Return whether thread PID is still valid. */
1679 aix_thread_thread_alive (ptid_t ptid)
1682 return base_target.to_thread_alive (ptid);
1684 /* We update the thread list every time the child stops, so all
1685 valid threads should be in the thread list. */
1686 return in_thread_list (ptid);
1689 /* Return a printable representation of composite PID for use in
1690 "info threads" output. */
1693 aix_thread_pid_to_str (ptid_t ptid)
1695 static char *ret = NULL;
1698 return base_target.to_pid_to_str (ptid);
1700 /* Free previous return value; a new one will be allocated by
1704 ret = xstrprintf (_("Thread %ld"), ptid_get_tid (ptid));
1708 /* Return a printable representation of extra information about
1709 THREAD, for use in "info threads" output. */
1712 aix_thread_extra_thread_info (struct thread_info *thread)
1714 struct ui_file *buf;
1716 pthdb_pthread_t pdtid;
1718 pthdb_state_t state;
1719 pthdb_suspendstate_t suspendstate;
1720 pthdb_detachstate_t detachstate;
1723 static char *ret = NULL;
1725 if (!PD_TID (thread->ptid))
1728 buf = mem_fileopen ();
1730 pdtid = thread->private->pdtid;
1731 tid = thread->private->tid;
1733 if (tid != PTHDB_INVALID_TID)
1734 /* i18n: Like "thread-identifier %d, [state] running, suspended" */
1735 fprintf_unfiltered (buf, _("tid %d"), (int)tid);
1737 status = pthdb_pthread_state (pd_session, pdtid, &state);
1738 if (status != PTHDB_SUCCESS)
1740 fprintf_unfiltered (buf, ", %s", state2str (state));
1742 status = pthdb_pthread_suspendstate (pd_session, pdtid,
1744 if (status == PTHDB_SUCCESS && suspendstate == PSS_SUSPENDED)
1745 /* i18n: Like "Thread-Id %d, [state] running, suspended" */
1746 fprintf_unfiltered (buf, _(", suspended"));
1748 status = pthdb_pthread_detachstate (pd_session, pdtid,
1750 if (status == PTHDB_SUCCESS && detachstate == PDS_DETACHED)
1751 /* i18n: Like "Thread-Id %d, [state] running, detached" */
1752 fprintf_unfiltered (buf, _(", detached"));
1754 pthdb_pthread_cancelpend (pd_session, pdtid, &cancelpend);
1755 if (status == PTHDB_SUCCESS && cancelpend)
1756 /* i18n: Like "Thread-Id %d, [state] running, cancel pending" */
1757 fprintf_unfiltered (buf, _(", cancel pending"));
1759 ui_file_write (buf, "", 1);
1761 xfree (ret); /* Free old buffer. */
1763 ret = ui_file_xstrdup (buf, &length);
1764 ui_file_delete (buf);
1769 /* Initialize target aix_thread_ops. */
1772 init_aix_thread_ops (void)
1774 aix_thread_ops.to_shortname = "aix-threads";
1775 aix_thread_ops.to_longname = _("AIX pthread support");
1776 aix_thread_ops.to_doc = _("AIX pthread support");
1778 aix_thread_ops.to_attach = aix_thread_attach;
1779 aix_thread_ops.to_detach = aix_thread_detach;
1780 aix_thread_ops.to_resume = aix_thread_resume;
1781 aix_thread_ops.to_wait = aix_thread_wait;
1782 aix_thread_ops.to_fetch_registers = aix_thread_fetch_registers;
1783 aix_thread_ops.to_store_registers = aix_thread_store_registers;
1784 aix_thread_ops.to_xfer_partial = aix_thread_xfer_partial;
1785 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1786 debugging when the inferior reaches pd_brk_addr. */
1787 aix_thread_ops.to_kill = aix_thread_kill;
1788 aix_thread_ops.to_mourn_inferior = aix_thread_mourn_inferior;
1789 aix_thread_ops.to_thread_alive = aix_thread_thread_alive;
1790 aix_thread_ops.to_pid_to_str = aix_thread_pid_to_str;
1791 aix_thread_ops.to_extra_thread_info = aix_thread_extra_thread_info;
1792 aix_thread_ops.to_stratum = thread_stratum;
1793 aix_thread_ops.to_magic = OPS_MAGIC;
1796 /* Module startup initialization function, automagically called by
1800 _initialize_aix_thread (void)
1802 init_aix_thread_ops ();
1803 add_target (&aix_thread_ops);
1805 /* Notice when object files get loaded and unloaded. */
1806 observer_attach_new_objfile (new_objfile);
1808 add_setshow_boolean_cmd ("aix-thread", class_maintenance, &debug_aix_thread,
1809 _("Set debugging of AIX thread module."),
1810 _("Show debugging of AIX thread module."),
1811 _("Enables debugging output (used to debug GDB)."),
1812 NULL, NULL, /* FIXME: i18n: Debugging of AIX thread module is \"%d\". */
1813 &setdebuglist, &showdebuglist);