1 /* Low level interface for debugging AIX 4.3+ pthreads.
3 Copyright 1999, 2000, 2002 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 2 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, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
24 /* This module uses the libpthdebug.a library provided by AIX 4.3+ for
25 debugging pthread applications.
27 Some name prefix conventions:
28 pthdb_ provided by libpthdebug.a
29 pdc_ callbacks that this module provides to libpthdebug.a
30 pd_ variables or functions interfacing with libpthdebug.a
32 libpthdebug peculiarities:
34 - pthdb_ptid_pthread() is prototyped in <sys/pthdebug.h>, but
35 it's not documented, and after several calls it stops working
36 and causes other libpthdebug functions to fail.
38 - pthdb_tid_pthread() doesn't always work after
39 pthdb_session_update(), but it does work after cycling through
40 all threads using pthdb_pthread().
45 #include "gdb_assert.h"
46 #include "gdbthread.h"
52 #include "gdb_string.h"
55 #include <sys/types.h>
56 #include <sys/ptrace.h>
59 #include <sys/pthdebug.h>
61 /* Whether to emit debugging output. */
62 static int debug_aix_thread;
64 /* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */
65 #ifndef PTHDB_VERSION_3
66 #define pthdb_tid_t tid_t
69 /* Return whether to treat PID as a debuggable thread id. */
71 #define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0)
73 /* Build a thread ptid. */
74 #define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID)
76 /* Build and lwp ptid. */
77 #define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP)
79 /* pthdb_user_t value that we pass to pthdb functions. 0 causes
80 PTHDB_BAD_USER errors, so use 1. */
84 /* Success and failure values returned by pthdb callbacks. */
86 #define PDC_SUCCESS PTHDB_SUCCESS
87 #define PDC_FAILURE PTHDB_CALLBACK
89 /* Private data attached to each element in GDB's thread list. */
91 struct private_thread_info {
92 pthdb_pthread_t pdtid; /* thread's libpthdebug id */
93 pthdb_tid_t tid; /* kernel thread id */
96 /* Information about a thread of which libpthdebug is aware. */
99 pthdb_pthread_t pdtid;
104 /* This module's target-specific operations, active while pd_able is true. */
106 static struct target_ops aix_thread_ops;
108 /* Copy of the target over which ops is pushed. This is more
109 convenient than a pointer to deprecated_child_ops or core_ops,
110 because they lack current_target's default callbacks. */
112 static struct target_ops base_target;
114 /* Address of the function that libpthread will call when libpthdebug
115 is ready to be initialized. */
117 static CORE_ADDR pd_brk_addr;
119 /* Whether the current application is debuggable by pthdb. */
121 static int pd_able = 0;
123 /* Whether a threaded application is being debugged. */
125 static int pd_active = 0;
127 /* Whether the current architecture is 64-bit.
128 Only valid when pd_able is true. */
132 /* Saved pointer to previous owner of
133 deprecated_target_new_objfile_hook. */
135 static void (*target_new_objfile_chain)(struct objfile *);
137 /* Forward declarations for pthdb callbacks. */
139 static int pdc_symbol_addrs (pthdb_user_t, pthdb_symbol_t *, int);
140 static int pdc_read_data (pthdb_user_t, void *, pthdb_addr_t, size_t);
141 static int pdc_write_data (pthdb_user_t, void *, pthdb_addr_t, size_t);
142 static int pdc_read_regs (pthdb_user_t user, pthdb_tid_t tid,
143 unsigned long long flags,
144 pthdb_context_t *context);
145 static int pdc_write_regs (pthdb_user_t user, pthdb_tid_t tid,
146 unsigned long long flags,
147 pthdb_context_t *context);
148 static int pdc_alloc (pthdb_user_t, size_t, void **);
149 static int pdc_realloc (pthdb_user_t, void *, size_t, void **);
150 static int pdc_dealloc (pthdb_user_t, void *);
152 /* pthdb callbacks. */
154 static pthdb_callbacks_t pd_callbacks = {
166 /* Current pthdb session. */
168 static pthdb_session_t pd_session;
170 /* Return a printable representation of pthdebug function return
174 pd_status2str (int status)
178 case PTHDB_SUCCESS: return "SUCCESS";
179 case PTHDB_NOSYS: return "NOSYS";
180 case PTHDB_NOTSUP: return "NOTSUP";
181 case PTHDB_BAD_VERSION: return "BAD_VERSION";
182 case PTHDB_BAD_USER: return "BAD_USER";
183 case PTHDB_BAD_SESSION: return "BAD_SESSION";
184 case PTHDB_BAD_MODE: return "BAD_MODE";
185 case PTHDB_BAD_FLAGS: return "BAD_FLAGS";
186 case PTHDB_BAD_CALLBACK: return "BAD_CALLBACK";
187 case PTHDB_BAD_POINTER: return "BAD_POINTER";
188 case PTHDB_BAD_CMD: return "BAD_CMD";
189 case PTHDB_BAD_PTHREAD: return "BAD_PTHREAD";
190 case PTHDB_BAD_ATTR: return "BAD_ATTR";
191 case PTHDB_BAD_MUTEX: return "BAD_MUTEX";
192 case PTHDB_BAD_MUTEXATTR: return "BAD_MUTEXATTR";
193 case PTHDB_BAD_COND: return "BAD_COND";
194 case PTHDB_BAD_CONDATTR: return "BAD_CONDATTR";
195 case PTHDB_BAD_RWLOCK: return "BAD_RWLOCK";
196 case PTHDB_BAD_RWLOCKATTR: return "BAD_RWLOCKATTR";
197 case PTHDB_BAD_KEY: return "BAD_KEY";
198 case PTHDB_BAD_PTID: return "BAD_PTID";
199 case PTHDB_BAD_TID: return "BAD_TID";
200 case PTHDB_CALLBACK: return "CALLBACK";
201 case PTHDB_CONTEXT: return "CONTEXT";
202 case PTHDB_HELD: return "HELD";
203 case PTHDB_NOT_HELD: return "NOT_HELD";
204 case PTHDB_MEMORY: return "MEMORY";
205 case PTHDB_NOT_PTHREADED: return "NOT_PTHREADED";
206 case PTHDB_SYMBOL: return "SYMBOL";
207 case PTHDB_NOT_AVAIL: return "NOT_AVAIL";
208 case PTHDB_INTERNAL: return "INTERNAL";
209 default: return "UNKNOWN";
213 /* A call to ptrace(REQ, ID, ...) just returned RET. Check for
214 exceptional conditions and either return nonlocally or else return
215 1 for success and 0 for failure. */
218 ptrace_check (int req, int id, int ret)
220 if (ret == 0 && !errno)
223 /* According to ptrace(2), ptrace may fail with EPERM if "the
224 Identifier parameter corresponds to a kernel thread which is
225 stopped in kernel mode and whose computational state cannot be
226 read or written." This happens quite often with register reads. */
233 if (ret == -1 && errno == EPERM)
235 if (debug_aix_thread)
236 fprintf_unfiltered (gdb_stdlog,
237 "ptrace (%d, %d) = %d (errno = %d)\n",
238 req, id, ret, errno);
239 return ret == -1 ? 0 : 1;
243 error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"),
244 req, id, ret, errno, safe_strerror (errno));
245 return 0; /* Not reached. */
248 /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */
251 ptrace64aix (int req, int id, long long addr, int data, int *buf)
254 return ptrace_check (req, id, ptracex (req, id, addr, data, buf));
257 /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */
260 ptrace32 (int req, int id, int *addr, int data, int *buf)
263 return ptrace_check (req, id,
264 ptrace (req, id, (int *) addr, data, buf));
267 /* If *PIDP is a composite process/thread id, convert it to a
271 pid_to_prc (ptid_t *ptidp)
277 *ptidp = pid_to_ptid (PIDGET (ptid));
280 /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
281 the address of SYMBOLS[<i>].name. */
284 pdc_symbol_addrs (pthdb_user_t user, pthdb_symbol_t *symbols, int count)
286 struct minimal_symbol *ms;
290 if (debug_aix_thread)
291 fprintf_unfiltered (gdb_stdlog,
292 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
293 user, (long) symbols, count);
295 for (i = 0; i < count; i++)
297 name = symbols[i].name;
298 if (debug_aix_thread)
299 fprintf_unfiltered (gdb_stdlog,
300 " symbols[%d].name = \"%s\"\n", i, name);
306 if (!(ms = lookup_minimal_symbol (name, NULL, NULL)))
308 if (debug_aix_thread)
309 fprintf_unfiltered (gdb_stdlog, " returning PDC_FAILURE\n");
312 symbols[i].addr = SYMBOL_VALUE_ADDRESS (ms);
314 if (debug_aix_thread)
315 fprintf_unfiltered (gdb_stdlog, " symbols[%d].addr = %s\n",
316 i, hex_string (symbols[i].addr));
318 if (debug_aix_thread)
319 fprintf_unfiltered (gdb_stdlog, " returning PDC_SUCCESS\n");
323 /* Read registers call back function should be able to read the
324 context information of a debuggee kernel thread from an active
325 process or from a core file. The information should be formatted
326 in context64 form for both 32-bit and 64-bit process.
327 If successful return 0, else non-zero is returned. */
330 pdc_read_regs (pthdb_user_t user,
332 unsigned long long flags,
333 pthdb_context_t *context)
335 /* This function doesn't appear to be used, so we could probably
336 just return 0 here. HOWEVER, if it is not defined, the OS will
337 complain and several thread debug functions will fail. In case
338 this is needed, I have implemented what I think it should do,
339 however this code is untested. */
341 uint64_t gprs64[ppc_num_gprs];
342 uint32_t gprs32[ppc_num_gprs];
343 double fprs[ppc_num_fprs];
344 struct ptxsprs sprs64;
345 struct ptsprs sprs32;
347 if (debug_aix_thread)
348 fprintf_unfiltered (gdb_stdlog, "pdc_read_regs tid=%d flags=%s\n",
349 (int) tid, hex_string (flags));
351 /* General-purpose registers. */
352 if (flags & PTHDB_FLAG_GPRS)
356 if (!ptrace64aix (PTT_READ_GPRS, tid,
357 (unsigned long) gprs64, 0, NULL))
358 memset (gprs64, 0, sizeof (gprs64));
359 memcpy (context->gpr, gprs64, sizeof(gprs64));
363 if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL))
364 memset (gprs32, 0, sizeof (gprs32));
365 memcpy (context->gpr, gprs32, sizeof(gprs32));
369 /* Floating-point registers. */
370 if (flags & PTHDB_FLAG_FPRS)
372 if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL))
373 memset (fprs, 0, sizeof (fprs));
374 memcpy (context->fpr, fprs, sizeof(fprs));
377 /* Special-purpose registers. */
378 if (flags & PTHDB_FLAG_SPRS)
382 if (!ptrace64aix (PTT_READ_SPRS, tid,
383 (unsigned long) &sprs64, 0, NULL))
384 memset (&sprs64, 0, sizeof (sprs64));
385 memcpy (&context->msr, &sprs64, sizeof(sprs64));
389 if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL))
390 memset (&sprs32, 0, sizeof (sprs32));
391 memcpy (&context->msr, &sprs32, sizeof(sprs32));
397 /* Write register function should be able to write requested context
398 information to specified debuggee's kernel thread id.
399 If successful return 0, else non-zero is returned. */
402 pdc_write_regs (pthdb_user_t user,
404 unsigned long long flags,
405 pthdb_context_t *context)
407 /* This function doesn't appear to be used, so we could probably
408 just return 0 here. HOWEVER, if it is not defined, the OS will
409 complain and several thread debug functions will fail. In case
410 this is needed, I have implemented what I think it should do,
411 however this code is untested. */
413 if (debug_aix_thread)
414 fprintf_unfiltered (gdb_stdlog, "pdc_write_regs tid=%d flags=%s\n",
415 (int) tid, hex_string (flags));
417 /* General-purpose registers. */
418 if (flags & PTHDB_FLAG_GPRS)
421 ptrace64aix (PTT_WRITE_GPRS, tid,
422 (unsigned long) context->gpr, 0, NULL);
424 ptrace32 (PTT_WRITE_GPRS, tid, (int *) context->gpr, 0, NULL);
427 /* Floating-point registers. */
428 if (flags & PTHDB_FLAG_FPRS)
430 ptrace32 (PTT_WRITE_FPRS, tid, (int *) context->fpr, 0, NULL);
433 /* Special-purpose registers. */
434 if (flags & PTHDB_FLAG_SPRS)
438 ptrace64aix (PTT_WRITE_SPRS, tid,
439 (unsigned long) &context->msr, 0, NULL);
443 ptrace32 (PTT_WRITE_SPRS, tid, (int *) &context->msr, 0, NULL);
449 /* pthdb callback: read LEN bytes from process ADDR into BUF. */
452 pdc_read_data (pthdb_user_t user, void *buf,
453 pthdb_addr_t addr, size_t len)
457 if (debug_aix_thread)
458 fprintf_unfiltered (gdb_stdlog,
459 "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
460 user, (long) buf, hex_string (addr), len);
462 status = target_read_memory (addr, buf, len);
463 ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE;
465 if (debug_aix_thread)
466 fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n",
467 status, pd_status2str (ret));
471 /* pthdb callback: write LEN bytes from BUF to process ADDR. */
474 pdc_write_data (pthdb_user_t user, void *buf,
475 pthdb_addr_t addr, size_t len)
479 if (debug_aix_thread)
480 fprintf_unfiltered (gdb_stdlog,
481 "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
482 user, (long) buf, hex_string (addr), len);
484 status = target_write_memory (addr, buf, len);
485 ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE;
487 if (debug_aix_thread)
488 fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n", status,
489 pd_status2str (ret));
493 /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
497 pdc_alloc (pthdb_user_t user, size_t len, void **bufp)
499 if (debug_aix_thread)
500 fprintf_unfiltered (gdb_stdlog,
501 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
502 user, len, (long) bufp);
503 *bufp = xmalloc (len);
504 if (debug_aix_thread)
505 fprintf_unfiltered (gdb_stdlog,
506 " malloc returned 0x%lx\n", (long) *bufp);
508 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
511 return *bufp ? PDC_SUCCESS : PDC_FAILURE;
514 /* pthdb callback: reallocate BUF, which was allocated by the alloc or
515 realloc callback, so that it contains LEN bytes, and store a
516 pointer to the result in BUFP. */
519 pdc_realloc (pthdb_user_t user, void *buf, size_t len, void **bufp)
521 if (debug_aix_thread)
522 fprintf_unfiltered (gdb_stdlog,
523 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
524 user, (long) buf, len, (long) bufp);
525 *bufp = xrealloc (buf, len);
526 if (debug_aix_thread)
527 fprintf_unfiltered (gdb_stdlog,
528 " realloc returned 0x%lx\n", (long) *bufp);
529 return *bufp ? PDC_SUCCESS : PDC_FAILURE;
532 /* pthdb callback: free BUF, which was allocated by the alloc or
536 pdc_dealloc (pthdb_user_t user, void *buf)
538 if (debug_aix_thread)
539 fprintf_unfiltered (gdb_stdlog,
540 "pdc_free (user = %ld, buf = 0x%lx)\n", user,
546 /* Return a printable representation of pthread STATE. */
549 state2str (pthdb_state_t state)
554 /* i18n: Like "Thread-Id %d, [state] idle" */
555 return _("idle"); /* being created */
557 /* i18n: Like "Thread-Id %d, [state] running" */
558 return _("running"); /* running */
560 /* i18n: Like "Thread-Id %d, [state] sleeping" */
561 return _("sleeping"); /* awaiting an event */
563 /* i18n: Like "Thread-Id %d, [state] ready" */
564 return _("ready"); /* runnable */
566 /* i18n: Like "Thread-Id %d, [state] finished" */
567 return _("finished"); /* awaiting a join/detach */
569 /* i18n: Like "Thread-Id %d, [state] unknown" */
574 /* qsort() comparison function for sorting pd_thread structs by pthid. */
577 pcmp (const void *p1v, const void *p2v)
579 struct pd_thread *p1 = (struct pd_thread *) p1v;
580 struct pd_thread *p2 = (struct pd_thread *) p2v;
581 return p1->pthid < p2->pthid ? -1 : p1->pthid > p2->pthid;
584 /* iterate_over_threads() callback for counting GDB threads. */
587 giter_count (struct thread_info *thread, void *countp)
593 /* iterate_over_threads() callback for accumulating GDB thread pids. */
596 giter_accum (struct thread_info *thread, void *bufp)
598 **(struct thread_info ***) bufp = thread;
599 (*(struct thread_info ***) bufp)++;
603 /* ptid comparison function */
606 ptid_cmp (ptid_t ptid1, ptid_t ptid2)
610 if (ptid_get_pid (ptid1) < ptid_get_pid (ptid2))
612 else if (ptid_get_pid (ptid1) > ptid_get_pid (ptid2))
614 else if (ptid_get_tid (ptid1) < ptid_get_tid (ptid2))
616 else if (ptid_get_tid (ptid1) > ptid_get_tid (ptid2))
618 else if (ptid_get_lwp (ptid1) < ptid_get_lwp (ptid2))
620 else if (ptid_get_lwp (ptid1) > ptid_get_lwp (ptid2))
626 /* qsort() comparison function for sorting thread_info structs by pid. */
629 gcmp (const void *t1v, const void *t2v)
631 struct thread_info *t1 = *(struct thread_info **) t1v;
632 struct thread_info *t2 = *(struct thread_info **) t2v;
633 return ptid_cmp (t1->ptid, t2->ptid);
636 /* Search through the list of all kernel threads for the thread
637 that has stopped on a SIGTRAP signal, and return its TID.
638 Return 0 if none found. */
641 get_signaled_thread (void)
643 struct thrdsinfo64 thrinf;
644 pthdb_tid_t ktid = 0;
647 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
648 extern int getthrds (pid_t, struct thrdsinfo64 *,
649 int, pthdb_tid_t *, int);
653 if (getthrds (PIDGET (inferior_ptid), &thrinf,
654 sizeof (thrinf), &ktid, 1) != 1)
657 if (thrinf.ti_cursig == SIGTRAP)
658 return thrinf.ti_tid;
661 /* Didn't find any thread stopped on a SIGTRAP signal. */
665 /* Synchronize GDB's thread list with libpthdebug's.
667 There are some benefits of doing this every time the inferior stops:
669 - allows users to run thread-specific commands without needing to
670 run "info threads" first
672 - helps pthdb_tid_pthread() work properly (see "libpthdebug
673 peculiarities" at the top of this module)
675 - simplifies the demands placed on libpthdebug, which seems to
676 have difficulty with certain call patterns */
679 sync_threadlists (void)
681 int cmd, status, infpid;
682 int pcount, psize, pi, gcount, gi;
683 struct pd_thread *pbuf;
684 struct thread_info **gbuf, **g, *thread;
685 pthdb_pthread_t pdtid;
689 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
693 pbuf = (struct pd_thread *) xmalloc (psize * sizeof *pbuf);
695 for (cmd = PTHDB_LIST_FIRST;; cmd = PTHDB_LIST_NEXT)
697 status = pthdb_pthread (pd_session, &pdtid, cmd);
698 if (status != PTHDB_SUCCESS || pdtid == PTHDB_INVALID_PTHREAD)
701 status = pthdb_pthread_ptid (pd_session, pdtid, &pthid);
702 if (status != PTHDB_SUCCESS || pthid == PTHDB_INVALID_PTID)
708 pbuf = (struct pd_thread *) xrealloc (pbuf,
709 psize * sizeof *pbuf);
711 pbuf[pcount].pdtid = pdtid;
712 pbuf[pcount].pthid = pthid;
716 for (pi = 0; pi < pcount; pi++)
718 status = pthdb_pthread_tid (pd_session, pbuf[pi].pdtid, &tid);
719 if (status != PTHDB_SUCCESS)
720 tid = PTHDB_INVALID_TID;
724 qsort (pbuf, pcount, sizeof *pbuf, pcmp);
726 /* Accumulate an array of GDB threads sorted by pid. */
729 iterate_over_threads (giter_count, &gcount);
730 g = gbuf = (struct thread_info **) xmalloc (gcount * sizeof *gbuf);
731 iterate_over_threads (giter_accum, &g);
732 qsort (gbuf, gcount, sizeof *gbuf, gcmp);
734 /* Apply differences between the two arrays to GDB's thread list. */
736 infpid = PIDGET (inferior_ptid);
737 for (pi = gi = 0; pi < pcount || gi < gcount;)
741 delete_thread (gbuf[gi]->ptid);
744 else if (gi == gcount)
746 thread = add_thread (BUILD_THREAD (pbuf[pi].pthid, infpid));
747 thread->private = xmalloc (sizeof (struct private_thread_info));
748 thread->private->pdtid = pbuf[pi].pdtid;
749 thread->private->tid = pbuf[pi].tid;
757 pptid = BUILD_THREAD (pbuf[pi].pthid, infpid);
758 gptid = gbuf[gi]->ptid;
759 pdtid = pbuf[pi].pdtid;
762 cmp_result = ptid_cmp (pptid, gptid);
766 gbuf[gi]->private->pdtid = pdtid;
767 gbuf[gi]->private->tid = tid;
771 else if (cmp_result > 0)
773 delete_thread (gptid);
778 thread = add_thread (pptid);
779 thread->private = xmalloc (sizeof (struct private_thread_info));
780 thread->private->pdtid = pdtid;
781 thread->private->tid = tid;
791 /* Iterate_over_threads() callback for locating a thread, using
792 the TID of its associated kernel thread. */
795 iter_tid (struct thread_info *thread, void *tidp)
797 const pthdb_tid_t tid = *(pthdb_tid_t *)tidp;
799 return (thread->private->tid == tid);
802 /* Synchronize libpthdebug's state with the inferior and with GDB,
803 generate a composite process/thread <pid> for the current thread,
804 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
807 pd_update (int set_infpid)
812 struct thread_info *thread = NULL;
815 return inferior_ptid;
817 status = pthdb_session_update (pd_session);
818 if (status != PTHDB_SUCCESS)
819 return inferior_ptid;
823 /* Define "current thread" as one that just received a trap signal. */
825 tid = get_signaled_thread ();
827 thread = iterate_over_threads (iter_tid, &tid);
829 ptid = inferior_ptid;
834 inferior_ptid = ptid;
839 /* Try to start debugging threads in the current process.
840 If successful and SET_INFPID, set inferior_ptid to reflect the
844 pd_activate (int set_infpid)
848 status = pthdb_session_init (PD_USER, arch64 ? PEM_64BIT : PEM_32BIT,
849 PTHDB_FLAG_REGS, &pd_callbacks,
851 if (status != PTHDB_SUCCESS)
853 return inferior_ptid;
856 return pd_update (set_infpid);
859 /* Undo the effects of pd_activate(). */
866 pthdb_session_destroy (pd_session);
868 pid_to_prc (&inferior_ptid);
872 /* An object file has just been loaded. Check whether the current
873 application is pthreaded, and if so, prepare for thread debugging. */
880 struct minimal_symbol *ms;
882 /* Don't initialize twice. */
886 /* Check application word size. */
887 arch64 = register_size (current_gdbarch, 0) == 8;
889 /* Check whether the application is pthreaded. */
891 status = pthdb_session_pthreaded (PD_USER, PTHDB_FLAG_REGS,
892 &pd_callbacks, &stub_name);
893 if ((status != PTHDB_SUCCESS &&
894 status != PTHDB_NOT_PTHREADED) || !stub_name)
897 /* Set a breakpoint on the returned stub function. */
898 if (!(ms = lookup_minimal_symbol (stub_name, NULL, NULL)))
900 pd_brk_addr = SYMBOL_VALUE_ADDRESS (ms);
901 if (!create_thread_event_breakpoint (pd_brk_addr))
904 /* Prepare for thread debugging. */
905 base_target = current_target;
906 push_target (&aix_thread_ops);
909 /* If we're debugging a core file or an attached inferior, the
910 pthread library may already have been initialized, so try to
911 activate thread debugging. */
915 /* Undo the effects of pd_enable(). */
925 unpush_target (&aix_thread_ops);
928 /* deprecated_target_new_objfile_hook callback.
930 If OBJFILE is non-null, check whether a threaded application is
931 being debugged, and if so, prepare for thread debugging.
933 If OBJFILE is null, stop debugging threads. */
936 new_objfile (struct objfile *objfile)
943 if (target_new_objfile_chain)
944 target_new_objfile_chain (objfile);
947 /* Attach to process specified by ARGS. */
950 aix_thread_attach (char *args, int from_tty)
952 base_target.to_attach (args, from_tty);
956 /* Detach from the process attached to by aix_thread_attach(). */
959 aix_thread_detach (char *args, int from_tty)
962 base_target.to_detach (args, from_tty);
965 /* Tell the inferior process to continue running thread PID if != -1
966 and all threads otherwise. */
969 aix_thread_resume (ptid_t ptid, int step, enum target_signal sig)
971 struct thread_info *thread;
976 struct cleanup *cleanup = save_inferior_ptid ();
977 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
978 base_target.to_resume (ptid, step, sig);
979 do_cleanups (cleanup);
983 thread = find_thread_pid (ptid);
985 error (_("aix-thread resume: unknown pthread %ld"),
988 tid[0] = thread->private->tid;
989 if (tid[0] == PTHDB_INVALID_TID)
990 error (_("aix-thread resume: no tid for pthread %ld"),
995 ptrace64aix (PTT_CONTINUE, tid[0], 1,
996 target_signal_to_host (sig), (int *) tid);
998 ptrace32 (PTT_CONTINUE, tid[0], (int *) 1,
999 target_signal_to_host (sig), (int *) tid);
1003 /* Wait for thread/process ID if != -1 or for any thread otherwise.
1004 If an error occurs, return -1, else return the pid of the stopped
1008 aix_thread_wait (ptid_t ptid, struct target_waitstatus *status)
1010 struct cleanup *cleanup = save_inferior_ptid ();
1014 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
1015 ptid = base_target.to_wait (ptid, status);
1016 do_cleanups (cleanup);
1018 if (PIDGET (ptid) == -1)
1019 return pid_to_ptid (-1);
1021 /* Check whether libpthdebug might be ready to be initialized. */
1022 if (!pd_active && status->kind == TARGET_WAITKIND_STOPPED &&
1023 status->value.sig == TARGET_SIGNAL_TRAP &&
1024 read_pc_pid (ptid) - DECR_PC_AFTER_BREAK == pd_brk_addr)
1025 return pd_activate (0);
1027 return pd_update (0);
1030 /* Record that the 64-bit general-purpose registers contain VALS. */
1033 supply_gprs64 (uint64_t *vals)
1035 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1038 for (regno = 0; regno < ppc_num_gprs; regno++)
1039 regcache_raw_supply (current_regcache, tdep->ppc_gp0_regnum + regno,
1040 (char *) (vals + regno));
1043 /* Record that 32-bit register REGNO contains VAL. */
1046 supply_reg32 (int regno, uint32_t val)
1048 regcache_raw_supply (current_regcache, regno, (char *) &val);
1051 /* Record that the floating-point registers contain VALS. */
1054 supply_fprs (double *vals)
1056 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1059 /* This function should never be called on architectures without
1060 floating-point registers. */
1061 gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
1063 for (regno = 0; regno < ppc_num_fprs; regno++)
1064 regcache_raw_supply (current_regcache, regno + tdep->ppc_fp0_regnum,
1065 (char *) (vals + regno));
1068 /* Predicate to test whether given register number is a "special" register. */
1070 special_register_p (int regno)
1072 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1074 return regno == PC_REGNUM
1075 || regno == tdep->ppc_ps_regnum
1076 || regno == tdep->ppc_cr_regnum
1077 || regno == tdep->ppc_lr_regnum
1078 || regno == tdep->ppc_ctr_regnum
1079 || regno == tdep->ppc_xer_regnum
1080 || (tdep->ppc_fpscr_regnum >= 0 && regno == tdep->ppc_fpscr_regnum)
1081 || (tdep->ppc_mq_regnum >= 0 && regno == tdep->ppc_mq_regnum);
1085 /* Record that the special registers contain the specified 64-bit and
1089 supply_sprs64 (uint64_t iar, uint64_t msr, uint32_t cr,
1090 uint64_t lr, uint64_t ctr, uint32_t xer,
1093 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1095 regcache_raw_supply (current_regcache, PC_REGNUM, (char *) &iar);
1096 regcache_raw_supply (current_regcache, tdep->ppc_ps_regnum, (char *) &msr);
1097 regcache_raw_supply (current_regcache, tdep->ppc_cr_regnum, (char *) &cr);
1098 regcache_raw_supply (current_regcache, tdep->ppc_lr_regnum, (char *) &lr);
1099 regcache_raw_supply (current_regcache, tdep->ppc_ctr_regnum, (char *) &ctr);
1100 regcache_raw_supply (current_regcache, tdep->ppc_xer_regnum, (char *) &xer);
1101 if (tdep->ppc_fpscr_regnum >= 0)
1102 regcache_raw_supply (current_regcache, tdep->ppc_fpscr_regnum,
1106 /* Record that the special registers contain the specified 32-bit
1110 supply_sprs32 (uint32_t iar, uint32_t msr, uint32_t cr,
1111 uint32_t lr, uint32_t ctr, uint32_t xer,
1114 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1116 regcache_raw_supply (current_regcache, PC_REGNUM, (char *) &iar);
1117 regcache_raw_supply (current_regcache, tdep->ppc_ps_regnum, (char *) &msr);
1118 regcache_raw_supply (current_regcache, tdep->ppc_cr_regnum, (char *) &cr);
1119 regcache_raw_supply (current_regcache, tdep->ppc_lr_regnum, (char *) &lr);
1120 regcache_raw_supply (current_regcache, tdep->ppc_ctr_regnum, (char *) &ctr);
1121 regcache_raw_supply (current_regcache, tdep->ppc_xer_regnum, (char *) &xer);
1122 if (tdep->ppc_fpscr_regnum >= 0)
1123 regcache_raw_supply (current_regcache, tdep->ppc_fpscr_regnum,
1127 /* Fetch all registers from pthread PDTID, which doesn't have a kernel
1130 There's no way to query a single register from a non-kernel
1131 pthread, so there's no need for a single-register version of this
1135 fetch_regs_user_thread (pthdb_pthread_t pdtid)
1137 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1139 pthdb_context_t ctx;
1141 if (debug_aix_thread)
1142 fprintf_unfiltered (gdb_stdlog,
1143 "fetch_regs_user_thread %lx\n", (long) pdtid);
1144 status = pthdb_pthread_context (pd_session, pdtid, &ctx);
1145 if (status != PTHDB_SUCCESS)
1146 error (_("aix-thread: fetch_registers: pthdb_pthread_context returned %s"),
1147 pd_status2str (status));
1149 /* General-purpose registers. */
1152 supply_gprs64 (ctx.gpr);
1154 for (i = 0; i < ppc_num_gprs; i++)
1155 supply_reg32 (tdep->ppc_gp0_regnum + i, ctx.gpr[i]);
1157 /* Floating-point registers. */
1159 if (ppc_floating_point_unit_p (current_gdbarch))
1160 supply_fprs (ctx.fpr);
1162 /* Special registers. */
1165 supply_sprs64 (ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, ctx.xer,
1168 supply_sprs32 (ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, ctx.xer,
1172 /* Fetch register REGNO if != -1 or all registers otherwise from
1175 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1176 SPRs, but there's no way to query individual registers within those
1177 groups. Therefore, if REGNO != -1, this function fetches an entire
1180 Unfortunately, kernel thread register queries often fail with
1181 EPERM, indicating that the thread is in kernel space. This breaks
1182 backtraces of threads other than the current one. To make that
1183 breakage obvious without throwing an error to top level (which is
1184 bad e.g. during "info threads" output), zero registers that can't
1188 fetch_regs_kernel_thread (int regno, pthdb_tid_t tid)
1190 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1191 uint64_t gprs64[ppc_num_gprs];
1192 uint32_t gprs32[ppc_num_gprs];
1193 double fprs[ppc_num_fprs];
1194 struct ptxsprs sprs64;
1195 struct ptsprs sprs32;
1198 if (debug_aix_thread)
1199 fprintf_unfiltered (gdb_stdlog,
1200 "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
1201 (long) tid, regno, arch64);
1203 /* General-purpose registers. */
1205 || (tdep->ppc_gp0_regnum <= regno
1206 && regno < tdep->ppc_gp0_regnum + ppc_num_gprs))
1210 if (!ptrace64aix (PTT_READ_GPRS, tid,
1211 (unsigned long) gprs64, 0, NULL))
1212 memset (gprs64, 0, sizeof (gprs64));
1213 supply_gprs64 (gprs64);
1217 if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL))
1218 memset (gprs32, 0, sizeof (gprs32));
1219 for (i = 0; i < ppc_num_gprs; i++)
1220 supply_reg32 (tdep->ppc_gp0_regnum + i, gprs32[i]);
1224 /* Floating-point registers. */
1226 if (ppc_floating_point_unit_p (current_gdbarch)
1228 || (regno >= tdep->ppc_fp0_regnum
1229 && regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
1231 if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL))
1232 memset (fprs, 0, sizeof (fprs));
1236 /* Special-purpose registers. */
1238 if (regno == -1 || special_register_p (regno))
1242 if (!ptrace64aix (PTT_READ_SPRS, tid,
1243 (unsigned long) &sprs64, 0, NULL))
1244 memset (&sprs64, 0, sizeof (sprs64));
1245 supply_sprs64 (sprs64.pt_iar, sprs64.pt_msr, sprs64.pt_cr,
1246 sprs64.pt_lr, sprs64.pt_ctr, sprs64.pt_xer,
1251 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1253 if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL))
1254 memset (&sprs32, 0, sizeof (sprs32));
1255 supply_sprs32 (sprs32.pt_iar, sprs32.pt_msr, sprs32.pt_cr,
1256 sprs32.pt_lr, sprs32.pt_ctr, sprs32.pt_xer,
1259 if (tdep->ppc_mq_regnum >= 0)
1260 regcache_raw_supply (current_regcache, tdep->ppc_mq_regnum,
1261 (char *) &sprs32.pt_mq);
1266 /* Fetch register REGNO if != -1 or all registers otherwise in the
1267 thread/process specified by inferior_ptid. */
1270 aix_thread_fetch_registers (int regno)
1272 struct thread_info *thread;
1275 if (!PD_TID (inferior_ptid))
1276 base_target.to_fetch_registers (regno);
1279 thread = find_thread_pid (inferior_ptid);
1280 tid = thread->private->tid;
1282 if (tid == PTHDB_INVALID_TID)
1283 fetch_regs_user_thread (thread->private->pdtid);
1285 fetch_regs_kernel_thread (regno, tid);
1289 /* Store the gp registers into an array of uint32_t or uint64_t. */
1292 fill_gprs64 (uint64_t *vals)
1294 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1297 for (regno = 0; regno < ppc_num_gprs; regno++)
1298 if (register_cached (tdep->ppc_gp0_regnum + regno))
1299 regcache_raw_collect (current_regcache, tdep->ppc_gp0_regnum + regno,
1304 fill_gprs32 (uint32_t *vals)
1306 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1309 for (regno = 0; regno < ppc_num_gprs; regno++)
1310 if (register_cached (tdep->ppc_gp0_regnum + regno))
1311 regcache_raw_collect (current_regcache, tdep->ppc_gp0_regnum + regno,
1315 /* Store the floating point registers into a double array. */
1317 fill_fprs (double *vals)
1319 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1322 /* This function should never be called on architectures without
1323 floating-point registers. */
1324 gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
1326 for (regno = tdep->ppc_fp0_regnum;
1327 regno < tdep->ppc_fp0_regnum + ppc_num_fprs;
1329 if (register_cached (regno))
1330 regcache_raw_collect (current_regcache, regno, vals + regno);
1333 /* Store the special registers into the specified 64-bit and 32-bit
1337 fill_sprs64 (uint64_t *iar, uint64_t *msr, uint32_t *cr,
1338 uint64_t *lr, uint64_t *ctr, uint32_t *xer,
1341 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1343 /* Verify that the size of the size of the IAR buffer is the
1344 same as the raw size of the PC (in the register cache). If
1345 they're not, then either GDB has been built incorrectly, or
1346 there's some other kind of internal error. To be really safe,
1347 we should check all of the sizes. */
1348 gdb_assert (sizeof (*iar) == register_size (current_gdbarch, PC_REGNUM));
1350 if (register_cached (PC_REGNUM))
1351 regcache_raw_collect (current_regcache, PC_REGNUM, iar);
1352 if (register_cached (tdep->ppc_ps_regnum))
1353 regcache_raw_collect (current_regcache, tdep->ppc_ps_regnum, msr);
1354 if (register_cached (tdep->ppc_cr_regnum))
1355 regcache_raw_collect (current_regcache, tdep->ppc_cr_regnum, cr);
1356 if (register_cached (tdep->ppc_lr_regnum))
1357 regcache_raw_collect (current_regcache, tdep->ppc_lr_regnum, lr);
1358 if (register_cached (tdep->ppc_ctr_regnum))
1359 regcache_raw_collect (current_regcache, tdep->ppc_ctr_regnum, ctr);
1360 if (register_cached (tdep->ppc_xer_regnum))
1361 regcache_raw_collect (current_regcache, tdep->ppc_xer_regnum, xer);
1362 if (tdep->ppc_fpscr_regnum >= 0
1363 && register_cached (tdep->ppc_fpscr_regnum))
1364 regcache_raw_collect (current_regcache, tdep->ppc_fpscr_regnum, fpscr);
1368 fill_sprs32 (unsigned long *iar, unsigned long *msr, unsigned long *cr,
1369 unsigned long *lr, unsigned long *ctr, unsigned long *xer,
1370 unsigned long *fpscr)
1372 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1374 /* Verify that the size of the size of the IAR buffer is the
1375 same as the raw size of the PC (in the register cache). If
1376 they're not, then either GDB has been built incorrectly, or
1377 there's some other kind of internal error. To be really safe,
1378 we should check all of the sizes.
1380 If this assert() fails, the most likely reason is that GDB was
1381 built incorrectly. In order to make use of many of the header
1382 files in /usr/include/sys, GDB needs to be configured so that
1383 sizeof (long) == 4). */
1384 gdb_assert (sizeof (*iar) == register_size (current_gdbarch, PC_REGNUM));
1386 if (register_cached (PC_REGNUM))
1387 regcache_raw_collect (current_regcache, PC_REGNUM, iar);
1388 if (register_cached (tdep->ppc_ps_regnum))
1389 regcache_raw_collect (current_regcache, tdep->ppc_ps_regnum, msr);
1390 if (register_cached (tdep->ppc_cr_regnum))
1391 regcache_raw_collect (current_regcache, tdep->ppc_cr_regnum, cr);
1392 if (register_cached (tdep->ppc_lr_regnum))
1393 regcache_raw_collect (current_regcache, tdep->ppc_lr_regnum, lr);
1394 if (register_cached (tdep->ppc_ctr_regnum))
1395 regcache_raw_collect (current_regcache, tdep->ppc_ctr_regnum, ctr);
1396 if (register_cached (tdep->ppc_xer_regnum))
1397 regcache_raw_collect (current_regcache, tdep->ppc_xer_regnum, xer);
1398 if (tdep->ppc_fpscr_regnum >= 0
1399 && register_cached (tdep->ppc_fpscr_regnum))
1400 regcache_raw_collect (current_regcache, tdep->ppc_fpscr_regnum, fpscr);
1403 /* Store all registers into pthread PDTID, which doesn't have a kernel
1406 It's possible to store a single register into a non-kernel pthread,
1407 but I doubt it's worth the effort. */
1410 store_regs_user_thread (pthdb_pthread_t pdtid)
1412 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1414 pthdb_context_t ctx;
1419 if (debug_aix_thread)
1420 fprintf_unfiltered (gdb_stdlog,
1421 "store_regs_user_thread %lx\n", (long) pdtid);
1423 /* Retrieve the thread's current context for its non-register
1425 status = pthdb_pthread_context (pd_session, pdtid, &ctx);
1426 if (status != PTHDB_SUCCESS)
1427 error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"),
1428 pd_status2str (status));
1430 /* Collect general-purpose register values from the regcache. */
1432 for (i = 0; i < ppc_num_gprs; i++)
1433 if (register_cached (tdep->ppc_gp0_regnum + i))
1437 regcache_raw_collect (current_regcache, tdep->ppc_gp0_regnum + i,
1443 regcache_raw_collect (current_regcache, tdep->ppc_gp0_regnum + i,
1449 /* Collect floating-point register values from the regcache. */
1450 if (ppc_floating_point_unit_p (current_gdbarch))
1451 fill_fprs (ctx.fpr);
1453 /* Special registers (always kept in ctx as 64 bits). */
1456 fill_sprs64 (&ctx.iar, &ctx.msr, &ctx.cr, &ctx.lr, &ctx.ctr, &ctx.xer,
1461 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1462 Solution: use 32-bit temp variables. (The assert() in fill_sprs32()
1463 will fail if the size of an unsigned long is incorrect. If this
1464 happens, GDB needs to be reconfigured so that longs are 32-bits.) */
1465 unsigned long tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer,
1468 fill_sprs32 (&tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr, &tmp_ctr, &tmp_xer,
1470 if (register_cached (PC_REGNUM))
1472 if (register_cached (tdep->ppc_ps_regnum))
1474 if (register_cached (tdep->ppc_cr_regnum))
1476 if (register_cached (tdep->ppc_lr_regnum))
1478 if (register_cached (tdep->ppc_ctr_regnum))
1480 if (register_cached (tdep->ppc_xer_regnum))
1482 if (register_cached (tdep->ppc_xer_regnum))
1483 ctx.fpscr = tmp_fpscr;
1486 status = pthdb_pthread_setcontext (pd_session, pdtid, &ctx);
1487 if (status != PTHDB_SUCCESS)
1488 error (_("aix-thread: store_registers: pthdb_pthread_setcontext returned %s"),
1489 pd_status2str (status));
1492 /* Store register REGNO if != -1 or all registers otherwise into
1495 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1496 SPRs, but there's no way to set individual registers within those
1497 groups. Therefore, if REGNO != -1, this function stores an entire
1501 store_regs_kernel_thread (int regno, pthdb_tid_t tid)
1503 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1504 uint64_t gprs64[ppc_num_gprs];
1505 uint32_t gprs32[ppc_num_gprs];
1506 double fprs[ppc_num_fprs];
1507 struct ptxsprs sprs64;
1508 struct ptsprs sprs32;
1511 if (debug_aix_thread)
1512 fprintf_unfiltered (gdb_stdlog,
1513 "store_regs_kernel_thread tid=%lx regno=%d\n",
1516 /* General-purpose registers. */
1518 || (tdep->ppc_gp0_regnum <= regno
1519 && regno < tdep->ppc_gp0_regnum + ppc_num_fprs))
1523 /* Pre-fetch: some regs may not be in the cache. */
1524 ptrace64aix (PTT_READ_GPRS, tid, (unsigned long) gprs64, 0, NULL);
1525 fill_gprs64 (gprs64);
1526 ptrace64aix (PTT_WRITE_GPRS, tid, (unsigned long) gprs64, 0, NULL);
1530 /* Pre-fetch: some regs may not be in the cache. */
1531 ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL);
1532 fill_gprs32 (gprs32);
1533 ptrace32 (PTT_WRITE_GPRS, tid, gprs32, 0, NULL);
1537 /* Floating-point registers. */
1539 if (ppc_floating_point_unit_p (current_gdbarch)
1541 || (regno >= tdep->ppc_fp0_regnum
1542 && regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
1544 /* Pre-fetch: some regs may not be in the cache. */
1545 ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL);
1547 ptrace32 (PTT_WRITE_FPRS, tid, (int *) fprs, 0, NULL);
1550 /* Special-purpose registers. */
1552 if (regno == -1 || special_register_p (regno))
1556 /* Pre-fetch: some registers won't be in the cache. */
1557 ptrace64aix (PTT_READ_SPRS, tid,
1558 (unsigned long) &sprs64, 0, NULL);
1559 fill_sprs64 (&sprs64.pt_iar, &sprs64.pt_msr, &sprs64.pt_cr,
1560 &sprs64.pt_lr, &sprs64.pt_ctr, &sprs64.pt_xer,
1562 ptrace64aix (PTT_WRITE_SPRS, tid,
1563 (unsigned long) &sprs64, 0, NULL);
1567 /* Pre-fetch: some registers won't be in the cache. */
1568 ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL);
1570 fill_sprs32 (&sprs32.pt_iar, &sprs32.pt_msr, &sprs32.pt_cr,
1571 &sprs32.pt_lr, &sprs32.pt_ctr, &sprs32.pt_xer,
1574 if (tdep->ppc_mq_regnum >= 0)
1575 if (register_cached (tdep->ppc_mq_regnum))
1576 regcache_raw_collect (current_regcache, tdep->ppc_mq_regnum,
1579 ptrace32 (PTT_WRITE_SPRS, tid, (int *) &sprs32, 0, NULL);
1584 /* Store gdb's current view of the register set into the
1585 thread/process specified by inferior_ptid. */
1588 aix_thread_store_registers (int regno)
1590 struct thread_info *thread;
1593 if (!PD_TID (inferior_ptid))
1594 base_target.to_store_registers (regno);
1597 thread = find_thread_pid (inferior_ptid);
1598 tid = thread->private->tid;
1600 if (tid == PTHDB_INVALID_TID)
1601 store_regs_user_thread (thread->private->pdtid);
1603 store_regs_kernel_thread (regno, tid);
1607 /* Transfer LEN bytes of memory from GDB address MYADDR to target
1608 address MEMADDR if WRITE and vice versa otherwise. */
1611 aix_thread_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
1612 struct mem_attrib *attrib,
1613 struct target_ops *target)
1616 struct cleanup *cleanup = save_inferior_ptid ();
1618 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
1619 n = base_target.deprecated_xfer_memory (memaddr, myaddr, len,
1620 write, attrib, &base_target);
1621 do_cleanups (cleanup);
1626 /* Kill and forget about the inferior process. */
1629 aix_thread_kill (void)
1631 struct cleanup *cleanup = save_inferior_ptid ();
1633 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
1634 base_target.to_kill ();
1635 do_cleanups (cleanup);
1638 /* Clean up after the inferior exits. */
1641 aix_thread_mourn_inferior (void)
1644 base_target.to_mourn_inferior ();
1647 /* Return whether thread PID is still valid. */
1650 aix_thread_thread_alive (ptid_t ptid)
1653 return base_target.to_thread_alive (ptid);
1655 /* We update the thread list every time the child stops, so all
1656 valid threads should be in the thread list. */
1657 return in_thread_list (ptid);
1660 /* Return a printable representation of composite PID for use in
1661 "info threads" output. */
1664 aix_thread_pid_to_str (ptid_t ptid)
1666 static char *ret = NULL;
1669 return base_target.to_pid_to_str (ptid);
1671 /* Free previous return value; a new one will be allocated by
1675 ret = xstrprintf (_("Thread %ld"), ptid_get_tid (ptid));
1679 /* Return a printable representation of extra information about
1680 THREAD, for use in "info threads" output. */
1683 aix_thread_extra_thread_info (struct thread_info *thread)
1685 struct ui_file *buf;
1687 pthdb_pthread_t pdtid;
1689 pthdb_state_t state;
1690 pthdb_suspendstate_t suspendstate;
1691 pthdb_detachstate_t detachstate;
1694 static char *ret = NULL;
1696 if (!PD_TID (thread->ptid))
1699 buf = mem_fileopen ();
1701 pdtid = thread->private->pdtid;
1702 tid = thread->private->tid;
1704 if (tid != PTHDB_INVALID_TID)
1705 /* i18n: Like "thread-identifier %d, [state] running, suspended" */
1706 fprintf_unfiltered (buf, _("tid %d"), tid);
1708 status = pthdb_pthread_state (pd_session, pdtid, &state);
1709 if (status != PTHDB_SUCCESS)
1711 fprintf_unfiltered (buf, ", %s", state2str (state));
1713 status = pthdb_pthread_suspendstate (pd_session, pdtid,
1715 if (status == PTHDB_SUCCESS && suspendstate == PSS_SUSPENDED)
1716 /* i18n: Like "Thread-Id %d, [state] running, suspended" */
1717 fprintf_unfiltered (buf, _(", suspended"));
1719 status = pthdb_pthread_detachstate (pd_session, pdtid,
1721 if (status == PTHDB_SUCCESS && detachstate == PDS_DETACHED)
1722 /* i18n: Like "Thread-Id %d, [state] running, detached" */
1723 fprintf_unfiltered (buf, _(", detached"));
1725 pthdb_pthread_cancelpend (pd_session, pdtid, &cancelpend);
1726 if (status == PTHDB_SUCCESS && cancelpend)
1727 /* i18n: Like "Thread-Id %d, [state] running, cancel pending" */
1728 fprintf_unfiltered (buf, _(", cancel pending"));
1730 ui_file_write (buf, "", 1);
1732 xfree (ret); /* Free old buffer. */
1734 ret = ui_file_xstrdup (buf, &length);
1735 ui_file_delete (buf);
1740 /* Initialize target aix_thread_ops. */
1743 init_aix_thread_ops (void)
1745 aix_thread_ops.to_shortname = "aix-threads";
1746 aix_thread_ops.to_longname = _("AIX pthread support");
1747 aix_thread_ops.to_doc = _("AIX pthread support");
1749 aix_thread_ops.to_attach = aix_thread_attach;
1750 aix_thread_ops.to_detach = aix_thread_detach;
1751 aix_thread_ops.to_resume = aix_thread_resume;
1752 aix_thread_ops.to_wait = aix_thread_wait;
1753 aix_thread_ops.to_fetch_registers = aix_thread_fetch_registers;
1754 aix_thread_ops.to_store_registers = aix_thread_store_registers;
1755 aix_thread_ops.deprecated_xfer_memory = aix_thread_xfer_memory;
1756 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1757 debugging when the inferior reaches pd_brk_addr. */
1758 aix_thread_ops.to_kill = aix_thread_kill;
1759 aix_thread_ops.to_mourn_inferior = aix_thread_mourn_inferior;
1760 aix_thread_ops.to_thread_alive = aix_thread_thread_alive;
1761 aix_thread_ops.to_pid_to_str = aix_thread_pid_to_str;
1762 aix_thread_ops.to_extra_thread_info = aix_thread_extra_thread_info;
1763 aix_thread_ops.to_stratum = thread_stratum;
1764 aix_thread_ops.to_magic = OPS_MAGIC;
1767 /* Module startup initialization function, automagically called by
1771 _initialize_aix_thread (void)
1773 init_aix_thread_ops ();
1774 add_target (&aix_thread_ops);
1776 /* Notice when object files get loaded and unloaded. */
1777 target_new_objfile_chain = deprecated_target_new_objfile_hook;
1778 deprecated_target_new_objfile_hook = new_objfile;
1780 add_setshow_zinteger_cmd ("aix-thread", no_class, (char *) &debug_aix_thread,
1781 _("Set debugging of AIX thread module."),
1782 _("Show debugging of AIX thread module."),
1783 _("Enables debugging output (used to debug GDB)."),
1784 _("Debugging of AIX thread module is \"%d\"."),
1785 NULL, NULL, &setdebuglist, &showdebuglist);