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"
53 #include "coff/internal.h" /* for libcoff.h */
54 #include "bfd/libcoff.h" /* for xcoff_data */
58 #include <sys/types.h>
59 #include <sys/ptrace.h>
65 #include <sys/pthdebug.h>
67 /* Whether to emit debugging output. */
68 static int debug_aix_thread
;
70 /* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */
71 #ifndef PTHDB_VERSION_3
72 #define pthdb_tid_t tid_t
75 /* Return whether to treat PID as a debuggable thread id. */
77 #define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0)
79 /* Build a thread ptid. */
80 #define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID)
82 /* Build and lwp ptid. */
83 #define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP)
85 /* pthdb_user_t value that we pass to pthdb functions. 0 causes
86 PTHDB_BAD_USER errors, so use 1. */
90 /* Success and failure values returned by pthdb callbacks. */
92 #define PDC_SUCCESS PTHDB_SUCCESS
93 #define PDC_FAILURE PTHDB_CALLBACK
95 /* Private data attached to each element in GDB's thread list. */
97 struct private_thread_info
{
98 pthdb_pthread_t pdtid
; /* thread's libpthdebug id */
99 pthdb_tid_t tid
; /* kernel thread id */
102 /* Information about a thread of which libpthdebug is aware. */
105 pthdb_pthread_t pdtid
;
110 /* This module's target-specific operations, active while pd_able is true. */
112 static struct target_ops ops
;
114 /* Copy of the target over which ops is pushed.
115 This is more convenient than a pointer to child_ops or core_ops,
116 because they lack current_target's default callbacks. */
118 static struct target_ops base_ops
;
120 /* Address of the function that libpthread will call when libpthdebug
121 is ready to be initialized. */
123 static CORE_ADDR pd_brk_addr
;
125 /* Whether the current application is debuggable by pthdb. */
127 static int pd_able
= 0;
129 /* Whether a threaded application is being debugged. */
131 static int pd_active
= 0;
133 /* Whether the current architecture is 64-bit.
134 Only valid when pd_able is true. */
138 /* Saved pointer to previous owner of target_new_objfile_hook. */
140 static void (*target_new_objfile_chain
)(struct objfile
*);
142 /* Forward declarations for pthdb callbacks. */
144 static int pdc_symbol_addrs (pthdb_user_t
, pthdb_symbol_t
*, int);
145 static int pdc_read_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
146 static int pdc_write_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
147 static int pdc_read_regs (pthdb_user_t user
, pthdb_tid_t tid
,
148 unsigned long long flags
,
149 pthdb_context_t
*context
);
150 static int pdc_write_regs (pthdb_user_t user
, pthdb_tid_t tid
,
151 unsigned long long flags
,
152 pthdb_context_t
*context
);
153 static int pdc_alloc (pthdb_user_t
, size_t, void **);
154 static int pdc_realloc (pthdb_user_t
, void *, size_t, void **);
155 static int pdc_dealloc (pthdb_user_t
, void *);
157 /* pthdb callbacks. */
159 static pthdb_callbacks_t pd_callbacks
= {
171 /* Current pthdb session. */
173 static pthdb_session_t pd_session
;
175 /* Return a printable representation of pthdebug function return
179 pd_status2str (int status
)
183 case PTHDB_SUCCESS
: return "SUCCESS";
184 case PTHDB_NOSYS
: return "NOSYS";
185 case PTHDB_NOTSUP
: return "NOTSUP";
186 case PTHDB_BAD_VERSION
: return "BAD_VERSION";
187 case PTHDB_BAD_USER
: return "BAD_USER";
188 case PTHDB_BAD_SESSION
: return "BAD_SESSION";
189 case PTHDB_BAD_MODE
: return "BAD_MODE";
190 case PTHDB_BAD_FLAGS
: return "BAD_FLAGS";
191 case PTHDB_BAD_CALLBACK
: return "BAD_CALLBACK";
192 case PTHDB_BAD_POINTER
: return "BAD_POINTER";
193 case PTHDB_BAD_CMD
: return "BAD_CMD";
194 case PTHDB_BAD_PTHREAD
: return "BAD_PTHREAD";
195 case PTHDB_BAD_ATTR
: return "BAD_ATTR";
196 case PTHDB_BAD_MUTEX
: return "BAD_MUTEX";
197 case PTHDB_BAD_MUTEXATTR
: return "BAD_MUTEXATTR";
198 case PTHDB_BAD_COND
: return "BAD_COND";
199 case PTHDB_BAD_CONDATTR
: return "BAD_CONDATTR";
200 case PTHDB_BAD_RWLOCK
: return "BAD_RWLOCK";
201 case PTHDB_BAD_RWLOCKATTR
: return "BAD_RWLOCKATTR";
202 case PTHDB_BAD_KEY
: return "BAD_KEY";
203 case PTHDB_BAD_PTID
: return "BAD_PTID";
204 case PTHDB_BAD_TID
: return "BAD_TID";
205 case PTHDB_CALLBACK
: return "CALLBACK";
206 case PTHDB_CONTEXT
: return "CONTEXT";
207 case PTHDB_HELD
: return "HELD";
208 case PTHDB_NOT_HELD
: return "NOT_HELD";
209 case PTHDB_MEMORY
: return "MEMORY";
210 case PTHDB_NOT_PTHREADED
: return "NOT_PTHREADED";
211 case PTHDB_SYMBOL
: return "SYMBOL";
212 case PTHDB_NOT_AVAIL
: return "NOT_AVAIL";
213 case PTHDB_INTERNAL
: return "INTERNAL";
214 default: return "UNKNOWN";
218 /* A call to ptrace(REQ, ID, ...) just returned RET. Check for
219 exceptional conditions and either return nonlocally or else return
220 1 for success and 0 for failure. */
223 ptrace_check (int req
, int id
, int ret
)
225 if (ret
== 0 && !errno
)
228 /* According to ptrace(2), ptrace may fail with EPERM if "the
229 Identifier parameter corresponds to a kernel thread which is
230 stopped in kernel mode and whose computational state cannot be
231 read or written." This happens quite often with register reads. */
238 if (ret
== -1 && errno
== EPERM
)
240 if (debug_aix_thread
)
241 fprintf_unfiltered (gdb_stdlog
,
242 "ptrace (%d, %d) = %d (errno = %d)",
243 req
, id
, ret
, errno
);
244 return ret
== -1 ? 0 : 1;
248 error ("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)",
249 req
, id
, ret
, errno
, safe_strerror (errno
));
250 return 0; /* Not reached. */
253 /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */
256 ptrace64aix (int req
, int id
, long long addr
, int data
, int *buf
)
259 return ptrace_check (req
, id
, ptracex (req
, id
, addr
, data
, buf
));
262 /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */
265 ptrace32 (int req
, int id
, int *addr
, int data
, int *buf
)
268 return ptrace_check (req
, id
,
269 ptrace (req
, id
, (int *)addr
, data
, buf
));
272 /* If *PIDP is a composite process/thread id, convert it to a
276 pid_to_prc (ptid_t
*ptidp
)
282 *ptidp
= pid_to_ptid (PIDGET (ptid
));
285 /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
286 the address of SYMBOLS[<i>].name. */
289 pdc_symbol_addrs (pthdb_user_t user
, pthdb_symbol_t
*symbols
, int count
)
291 struct minimal_symbol
*ms
;
295 if (debug_aix_thread
)
296 fprintf_unfiltered (gdb_stdlog
,
297 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)",
298 user
, (long) symbols
, count
);
300 for (i
= 0; i
< count
; i
++)
302 name
= symbols
[i
].name
;
303 if (debug_aix_thread
)
304 fprintf_unfiltered (gdb_stdlog
,
305 " symbols[%d].name = \"%s\"", i
, name
);
311 if (!(ms
= lookup_minimal_symbol (name
, NULL
, NULL
)))
313 if (debug_aix_thread
)
314 fprintf_unfiltered (gdb_stdlog
, " returning PDC_FAILURE");
317 symbols
[i
].addr
= SYMBOL_VALUE_ADDRESS (ms
);
319 if (debug_aix_thread
)
320 fprintf_unfiltered (gdb_stdlog
, " symbols[%d].addr = 0x%llx",
323 if (debug_aix_thread
)
324 fprintf_unfiltered (gdb_stdlog
, " returning PDC_SUCCESS");
328 /* Read registers call back function should be able to read the
329 context information of a debuggee kernel thread from an active
330 process or from a core file. The information should be formatted
331 in context64 form for both 32-bit and 64-bit process.
332 If successful return 0, else non-zero is returned. */
335 pdc_read_regs (pthdb_user_t user
,
337 unsigned long long flags
,
338 pthdb_context_t
*context
)
340 /* This function doesn't appear to be used, so we could probably
341 just return 0 here. HOWEVER, if it is not defined, the OS will
342 complain and several thread debug functions will fail. In case
343 this is needed, I have implemented what I think it should do,
344 however this code is untested. */
349 struct ptxsprs sprs64
;
350 struct ptsprs sprs32
;
352 if (debug_aix_thread
)
353 fprintf_unfiltered (gdb_stdlog
, "pdc_read_regs tid=%d flags=%llx\n",
356 /* General-purpose registers. */
357 if (flags
& PTHDB_FLAG_GPRS
)
361 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
362 (unsigned long) gprs64
, 0, NULL
))
363 memset (gprs64
, 0, sizeof (gprs64
));
364 memcpy (context
->gpr
, gprs64
, sizeof(gprs64
));
368 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
369 memset (gprs32
, 0, sizeof (gprs32
));
370 memcpy (context
->gpr
, gprs32
, sizeof(gprs32
));
374 /* Floating-point registers. */
375 if (flags
& PTHDB_FLAG_FPRS
)
377 if (!ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
))
378 memset (fprs
, 0, sizeof (fprs
));
379 memcpy (context
->fpr
, fprs
, sizeof(fprs
));
382 /* Special-purpose registers. */
383 if (flags
& PTHDB_FLAG_SPRS
)
387 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
388 (unsigned long) &sprs64
, 0, NULL
))
389 memset (&sprs64
, 0, sizeof (sprs64
));
390 memcpy (&context
->msr
, &sprs64
, sizeof(sprs64
));
394 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
395 memset (&sprs32
, 0, sizeof (sprs32
));
396 memcpy (&context
->msr
, &sprs32
, sizeof(sprs32
));
402 /* Write register function should be able to write requested context
403 information to specified debuggee's kernel thread id.
404 If successful return 0, else non-zero is returned. */
407 pdc_write_regs (pthdb_user_t user
,
409 unsigned long long flags
,
410 pthdb_context_t
*context
)
412 /* This function doesn't appear to be used, so we could probably
413 just return 0 here. HOWEVER, if it is not defined, the OS will
414 complain and several thread debug functions will fail. In case
415 this is needed, I have implemented what I think it should do,
416 however this code is untested. */
418 if (debug_aix_thread
)
419 fprintf_unfiltered (gdb_stdlog
, "pdc_write_regs tid=%d flags=%llx\n",
422 /* General-purpose registers. */
423 if (flags
& PTHDB_FLAG_GPRS
)
426 ptrace64aix (PTT_WRITE_GPRS
, tid
,
427 (unsigned long)context
->gpr
, 0, NULL
);
429 ptrace32 (PTT_WRITE_GPRS
, tid
, (int *)context
->gpr
, 0, NULL
);
432 /* Floating-point registers. */
433 if (flags
& PTHDB_FLAG_FPRS
)
435 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *)context
->fpr
, 0, NULL
);
438 /* Special-purpose registers. */
439 if (flags
& PTHDB_FLAG_SPRS
)
443 ptrace64aix (PTT_WRITE_SPRS
, tid
,
444 (unsigned long) &context
->msr
, 0, NULL
);
448 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *)&context
->msr
, 0, NULL
);
454 /* pthdb callback: read LEN bytes from process ADDR into BUF. */
457 pdc_read_data (pthdb_user_t user
, void *buf
,
458 pthdb_addr_t addr
, size_t len
)
462 if (debug_aix_thread
)
463 fprintf_unfiltered (gdb_stdlog
,
464 "pdc_read_data (user = %ld, buf = 0x%lx, addr = 0x%llx, len = %ld)",
465 user
, (long) buf
, addr
, len
);
467 status
= target_read_memory (addr
, buf
, len
);
468 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
470 if (debug_aix_thread
)
471 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s",
472 status
, pd_status2str (ret
));
476 /* pthdb callback: write LEN bytes from BUF to process ADDR. */
479 pdc_write_data (pthdb_user_t user
, void *buf
,
480 pthdb_addr_t addr
, size_t len
)
484 if (debug_aix_thread
)
485 fprintf_unfiltered (gdb_stdlog
,
486 "pdc_write_data (user = %ld, buf = 0x%lx, addr = 0x%llx, len = %ld)",
487 user
, (long) buf
, addr
, len
);
489 status
= target_write_memory (addr
, buf
, len
);
490 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
492 if (debug_aix_thread
)
493 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s", status
,
494 pd_status2str (ret
));
498 /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
502 pdc_alloc (pthdb_user_t user
, size_t len
, void **bufp
)
504 if (debug_aix_thread
)
505 fprintf_unfiltered (gdb_stdlog
,
506 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)",
507 user
, len
, (long) bufp
);
508 *bufp
= xmalloc (len
);
509 if (debug_aix_thread
)
510 fprintf_unfiltered (gdb_stdlog
,
511 " malloc returned 0x%lx", (long) *bufp
);
513 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
516 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
519 /* pthdb callback: reallocate BUF, which was allocated by the alloc or
520 realloc callback, so that it contains LEN bytes, and store a
521 pointer to the result in BUFP. */
524 pdc_realloc (pthdb_user_t user
, void *buf
, size_t len
, void **bufp
)
526 if (debug_aix_thread
)
527 fprintf_unfiltered (gdb_stdlog
,
528 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)",
529 user
, (long) buf
, len
, (long) bufp
);
530 *bufp
= xrealloc (buf
, len
);
531 if (debug_aix_thread
)
532 fprintf_unfiltered (gdb_stdlog
,
533 " realloc returned 0x%lx", (long) *bufp
);
534 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
537 /* pthdb callback: free BUF, which was allocated by the alloc or
541 pdc_dealloc (pthdb_user_t user
, void *buf
)
543 if (debug_aix_thread
)
544 fprintf_unfiltered (gdb_stdlog
,
545 "pdc_free (user = %ld, buf = 0x%lx)", user
,
551 /* Return a printable representation of pthread STATE. */
554 state2str (pthdb_state_t state
)
558 case PST_IDLE
: return "idle"; /* being created */
559 case PST_RUN
: return "running"; /* running */
560 case PST_SLEEP
: return "sleeping"; /* awaiting an event */
561 case PST_READY
: return "ready"; /* runnable */
562 case PST_TERM
: return "finished"; /* awaiting a join/detach */
563 default: return "unknown";
567 /* qsort() comparison function for sorting pd_thread structs by pthid. */
570 pcmp (const void *p1v
, const void *p2v
)
572 struct pd_thread
*p1
= (struct pd_thread
*) p1v
;
573 struct pd_thread
*p2
= (struct pd_thread
*) p2v
;
574 return p1
->pthid
< p2
->pthid
? -1 : p1
->pthid
> p2
->pthid
;
577 /* iterate_over_threads() callback for counting GDB threads. */
580 giter_count (struct thread_info
*thread
, void *countp
)
586 /* iterate_over_threads() callback for accumulating GDB thread pids. */
589 giter_accum (struct thread_info
*thread
, void *bufp
)
591 **(struct thread_info
***) bufp
= thread
;
592 (*(struct thread_info
***) bufp
)++;
596 /* ptid comparison function */
599 ptid_cmp (ptid_t ptid1
, ptid_t ptid2
)
603 if (ptid_get_pid (ptid1
) < ptid_get_pid (ptid2
))
605 else if (ptid_get_pid (ptid1
) > ptid_get_pid (ptid2
))
607 else if (ptid_get_tid (ptid1
) < ptid_get_tid (ptid2
))
609 else if (ptid_get_tid (ptid1
) > ptid_get_tid (ptid2
))
611 else if (ptid_get_lwp (ptid1
) < ptid_get_lwp (ptid2
))
613 else if (ptid_get_lwp (ptid1
) > ptid_get_lwp (ptid2
))
619 /* qsort() comparison function for sorting thread_info structs by pid. */
622 gcmp (const void *t1v
, const void *t2v
)
624 struct thread_info
*t1
= *(struct thread_info
**) t1v
;
625 struct thread_info
*t2
= *(struct thread_info
**) t2v
;
626 return ptid_cmp (t1
->ptid
, t2
->ptid
);
629 /* Synchronize GDB's thread list with libpthdebug's.
631 There are some benefits of doing this every time the inferior stops:
633 - allows users to run thread-specific commands without needing to
634 run "info threads" first
636 - helps pthdb_tid_pthread() work properly (see "libpthdebug
637 peculiarities" at the top of this module)
639 - simplifies the demands placed on libpthdebug, which seems to
640 have difficulty with certain call patterns */
643 sync_threadlists (void)
645 int cmd
, status
, infpid
;
646 int pcount
, psize
, pi
, gcount
, gi
;
647 struct pd_thread
*pbuf
;
648 struct thread_info
**gbuf
, **g
, *thread
;
649 pthdb_pthread_t pdtid
;
653 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
657 pbuf
= (struct pd_thread
*) xmalloc (psize
* sizeof *pbuf
);
659 for (cmd
= PTHDB_LIST_FIRST
;; cmd
= PTHDB_LIST_NEXT
)
661 status
= pthdb_pthread (pd_session
, &pdtid
, cmd
);
662 if (status
!= PTHDB_SUCCESS
|| pdtid
== PTHDB_INVALID_PTHREAD
)
665 status
= pthdb_pthread_ptid (pd_session
, pdtid
, &pthid
);
666 if (status
!= PTHDB_SUCCESS
|| pthid
== PTHDB_INVALID_PTID
)
672 pbuf
= (struct pd_thread
*) xrealloc (pbuf
,
673 psize
* sizeof *pbuf
);
675 pbuf
[pcount
].pdtid
= pdtid
;
676 pbuf
[pcount
].pthid
= pthid
;
680 for (pi
= 0; pi
< pcount
; pi
++)
682 status
= pthdb_pthread_tid (pd_session
, pbuf
[pi
].pdtid
, &tid
);
683 if (status
!= PTHDB_SUCCESS
)
684 tid
= PTHDB_INVALID_TID
;
688 qsort (pbuf
, pcount
, sizeof *pbuf
, pcmp
);
690 /* Accumulate an array of GDB threads sorted by pid. */
693 iterate_over_threads (giter_count
, &gcount
);
694 g
= gbuf
= (struct thread_info
**) xmalloc (gcount
* sizeof *gbuf
);
695 iterate_over_threads (giter_accum
, &g
);
696 qsort (gbuf
, gcount
, sizeof *gbuf
, gcmp
);
698 /* Apply differences between the two arrays to GDB's thread list. */
700 infpid
= PIDGET (inferior_ptid
);
701 for (pi
= gi
= 0; pi
< pcount
|| gi
< gcount
;)
705 delete_thread (gbuf
[gi
]->ptid
);
708 else if (gi
== gcount
)
710 thread
= add_thread (BUILD_THREAD (pbuf
[pi
].pthid
, infpid
));
711 thread
->private = xmalloc (sizeof (struct private_thread_info
));
712 thread
->private->pdtid
= pbuf
[pi
].pdtid
;
713 thread
->private->tid
= pbuf
[pi
].tid
;
721 pptid
= BUILD_THREAD (pbuf
[pi
].pthid
, infpid
);
722 gptid
= gbuf
[gi
]->ptid
;
723 pdtid
= pbuf
[pi
].pdtid
;
726 cmp_result
= ptid_cmp (pptid
, gptid
);
730 gbuf
[gi
]->private->pdtid
= pdtid
;
731 gbuf
[gi
]->private->tid
= tid
;
735 else if (cmp_result
> 0)
737 delete_thread (gptid
);
742 thread
= add_thread (pptid
);
743 thread
->private = xmalloc (sizeof (struct private_thread_info
));
744 thread
->private->pdtid
= pdtid
;
745 thread
->private->tid
= tid
;
755 /* Iterate_over_threads() callback for locating a thread whose kernel
756 thread just received a trap signal. */
759 iter_trap (struct thread_info
*thread
, void *unused
)
761 struct thrdsinfo64 thrinf
;
764 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
765 extern int getthrds (pid_t
, struct thrdsinfo64
*,
766 int, pthdb_tid_t
*, int);
768 tid
= thread
->private->tid
;
769 if (tid
== PTHDB_INVALID_TID
)
772 if (getthrds (PIDGET (inferior_ptid
), &thrinf
,
773 sizeof (thrinf
), &tid
, 1) != 1)
776 return thrinf
.ti_cursig
== SIGTRAP
;
779 /* Synchronize libpthdebug's state with the inferior and with GDB,
780 generate a composite process/thread <pid> for the current thread,
781 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
784 pd_update (int set_infpid
)
788 struct thread_info
*thread
;
791 return inferior_ptid
;
793 status
= pthdb_session_update (pd_session
);
794 if (status
!= PTHDB_SUCCESS
)
795 return inferior_ptid
;
799 /* Define "current thread" as one that just received a trap signal. */
801 thread
= iterate_over_threads (iter_trap
, NULL
);
803 ptid
= inferior_ptid
;
808 inferior_ptid
= ptid
;
813 /* Try to start debugging threads in the current process.
814 If successful and SET_INFPID, set inferior_ptid to reflect the
818 pd_activate (int set_infpid
)
822 status
= pthdb_session_init (PD_USER
, arch64
? PEM_64BIT
: PEM_32BIT
,
823 PTHDB_FLAG_REGS
, &pd_callbacks
,
825 if (status
!= PTHDB_SUCCESS
)
827 return inferior_ptid
;
830 return pd_update (set_infpid
);
833 /* Undo the effects of pd_activate(). */
840 pthdb_session_destroy (pd_session
);
842 pid_to_prc (&inferior_ptid
);
846 /* An object file has just been loaded. Check whether the current
847 application is pthreaded, and if so, prepare for thread debugging. */
854 struct minimal_symbol
*ms
;
856 /* Don't initialize twice. */
860 /* Check application word size. */
861 arch64
= REGISTER_RAW_SIZE (0) == 8;
863 /* Check whether the application is pthreaded. */
865 status
= pthdb_session_pthreaded (PD_USER
, PTHDB_FLAG_REGS
,
866 &pd_callbacks
, &stub_name
);
867 if ((status
!= PTHDB_SUCCESS
&&
868 status
!= PTHDB_NOT_PTHREADED
) || !stub_name
)
871 /* Set a breakpoint on the returned stub function. */
872 if (!(ms
= lookup_minimal_symbol (stub_name
, NULL
, NULL
)))
874 pd_brk_addr
= SYMBOL_VALUE_ADDRESS (ms
);
875 if (!create_thread_event_breakpoint (pd_brk_addr
))
878 /* Prepare for thread debugging. */
879 base_ops
= current_target
;
883 /* If we're debugging a core file or an attached inferior, the
884 pthread library may already have been initialized, so try to
885 activate thread debugging. */
889 /* Undo the effects of pd_enable(). */
899 unpush_target (&ops
);
902 /* target_new_objfile_hook callback.
904 If OBJFILE is non-null, check whether a threaded application is
905 being debugged, and if so, prepare for thread debugging.
907 If OBJFILE is null, stop debugging threads. */
910 new_objfile (struct objfile
*objfile
)
917 if (target_new_objfile_chain
)
918 target_new_objfile_chain (objfile
);
921 /* Attach to process specified by ARGS. */
924 ops_attach (char *args
, int from_tty
)
926 base_ops
.to_attach (args
, from_tty
);
930 /* Detach from the process attached to by ops_attach(). */
933 ops_detach (char *args
, int from_tty
)
936 base_ops
.to_detach (args
, from_tty
);
939 /* Tell the inferior process to continue running thread PID if != -1
940 and all threads otherwise. */
943 ops_resume (ptid_t ptid
, int step
, enum target_signal sig
)
945 struct thread_info
*thread
;
950 struct cleanup
*cleanup
= save_inferior_ptid ();
951 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
952 base_ops
.to_resume (ptid
, step
, sig
);
953 do_cleanups (cleanup
);
957 thread
= find_thread_pid (ptid
);
959 error ("aix-thread resume: unknown pthread %ld",
962 tid
[0] = thread
->private->tid
;
963 if (tid
[0] == PTHDB_INVALID_TID
)
964 error ("aix-thread resume: no tid for pthread %ld",
969 ptrace64aix (PTT_CONTINUE
, tid
[0], 1,
970 target_signal_to_host (sig
), (int *)tid
);
972 ptrace32 (PTT_CONTINUE
, tid
[0], (int *) 1,
973 target_signal_to_host (sig
), (int *)tid
);
977 /* Wait for thread/process ID if != -1 or for any thread otherwise.
978 If an error occurs, return -1, else return the pid of the stopped
982 ops_wait (ptid_t ptid
, struct target_waitstatus
*status
)
984 struct cleanup
*cleanup
= save_inferior_ptid ();
988 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
989 ptid
= base_ops
.to_wait (ptid
, status
);
990 do_cleanups (cleanup
);
992 if (PIDGET (ptid
) == -1)
993 return pid_to_ptid (-1);
995 /* Check whether libpthdebug might be ready to be initialized. */
996 if (!pd_active
&& status
->kind
== TARGET_WAITKIND_STOPPED
&&
997 status
->value
.sig
== TARGET_SIGNAL_TRAP
&&
998 read_pc_pid (ptid
) - DECR_PC_AFTER_BREAK
== pd_brk_addr
)
999 return pd_activate (0);
1001 return pd_update (0);
1004 /* Record that the 64-bit general-purpose registers contain VALS. */
1007 supply_gprs64 (uint64_t *vals
)
1011 for (regno
= 0; regno
< 32; regno
++)
1012 supply_register (regno
, (char *) (vals
+ regno
));
1015 /* Record that 32-bit register REGNO contains VAL. */
1018 supply_reg32 (int regno
, uint32_t val
)
1020 supply_register (regno
, (char *) &val
);
1023 /* Record that the floating-point registers contain VALS. */
1026 supply_fprs (double *vals
)
1030 for (regno
= 0; regno
< 32; regno
++)
1031 supply_register (regno
+ FP0_REGNUM
, (char *) (vals
+ regno
));
1034 /* Record that the special registers contain the specified 64-bit and
1038 supply_sprs64 (uint64_t iar
, uint64_t msr
, uint32_t cr
,
1039 uint64_t lr
, uint64_t ctr
, uint32_t xer
)
1041 int regno
= FIRST_UISA_SP_REGNUM
;
1043 supply_register (regno
, (char *) &iar
);
1044 supply_register (regno
+ 1, (char *) &msr
);
1045 supply_register (regno
+ 2, (char *) &cr
);
1046 supply_register (regno
+ 3, (char *) &lr
);
1047 supply_register (regno
+ 4, (char *) &ctr
);
1048 supply_register (regno
+ 5, (char *) &xer
);
1051 /* Record that the special registers contain the specified 32-bit
1055 supply_sprs32 (uint32_t iar
, uint32_t msr
, uint32_t cr
,
1056 uint32_t lr
, uint32_t ctr
, uint32_t xer
)
1058 int regno
= FIRST_UISA_SP_REGNUM
;
1060 supply_register (regno
, (char *) &iar
);
1061 supply_register (regno
+ 1, (char *) &msr
);
1062 supply_register (regno
+ 2, (char *) &cr
);
1063 supply_register (regno
+ 3, (char *) &lr
);
1064 supply_register (regno
+ 4, (char *) &ctr
);
1065 supply_register (regno
+ 5, (char *) &xer
);
1068 /* Fetch all registers from pthread PDTID, which doesn't have a kernel
1071 There's no way to query a single register from a non-kernel
1072 pthread, so there's no need for a single-register version of this
1076 fetch_regs_lib (pthdb_pthread_t pdtid
)
1079 pthdb_context_t ctx
;
1081 if (debug_aix_thread
)
1082 fprintf_unfiltered (gdb_stdlog
, "fetch_regs_lib %lx\n", (long)pdtid
);
1083 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1084 if (status
!= PTHDB_SUCCESS
)
1085 error ("aix-thread: fetch_registers: pthdb_pthread_context returned %s",
1086 pd_status2str (status
));
1088 /* General-purpose registers. */
1091 supply_gprs64 (ctx
.gpr
);
1093 for (i
= 0; i
< 32; i
++)
1094 supply_reg32 (i
, ctx
.gpr
[i
]);
1096 /* Floating-point registers. */
1098 supply_fprs (ctx
.fpr
);
1100 /* Special registers. */
1103 supply_sprs64 (ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
, ctx
.xer
);
1105 supply_sprs32 (ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
, ctx
.xer
);
1108 /* Fetch register REGNO if != -1 or all registers otherwise from
1111 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1112 SPRs, but there's no way to query individual registers within those
1113 groups. Therefore, if REGNO != -1, this function fetches an entire
1116 Unfortunately, kernel thread register queries often fail with
1117 EPERM, indicating that the thread is in kernel space. This breaks
1118 backtraces of threads other than the current one. To make that
1119 breakage obvious without throwing an error to top level (which is
1120 bad e.g. during "info threads" output), zero registers that can't
1124 fetch_regs_kern (int regno
, pthdb_tid_t tid
)
1126 uint64_t gprs64
[32];
1127 uint32_t gprs32
[32];
1129 struct ptxsprs sprs64
;
1130 struct ptsprs sprs32
;
1133 if (debug_aix_thread
)
1134 fprintf_unfiltered (gdb_stdlog
,
1135 "fetch_regs_kern tid=%lx regno=%d arch64=%d\n",
1136 (long)tid
, regno
, arch64
);
1138 /* General-purpose registers. */
1139 if (regno
== -1 || regno
< FP0_REGNUM
)
1143 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
1144 (unsigned long) gprs64
, 0, NULL
))
1145 memset (gprs64
, 0, sizeof (gprs64
));
1146 supply_gprs64 (gprs64
);
1150 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
1151 memset (gprs32
, 0, sizeof (gprs32
));
1152 for (i
= 0; i
< 32; i
++)
1153 supply_reg32 (i
, gprs32
[i
]);
1157 /* Floating-point registers. */
1159 if (regno
== -1 || (regno
>= FP0_REGNUM
&& regno
<= FPLAST_REGNUM
))
1161 if (!ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
))
1162 memset (fprs
, 0, sizeof (fprs
));
1166 /* Special-purpose registers. */
1169 (regno
> FPLAST_REGNUM
&& regno
<= LAST_UISA_SP_REGNUM
))
1173 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
1174 (unsigned long) &sprs64
, 0, NULL
))
1175 memset (&sprs64
, 0, sizeof (sprs64
));
1176 supply_sprs64 (sprs64
.pt_iar
, sprs64
.pt_msr
, sprs64
.pt_cr
,
1177 sprs64
.pt_lr
, sprs64
.pt_ctr
, sprs64
.pt_xer
);
1181 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
1182 memset (&sprs32
, 0, sizeof (sprs32
));
1183 supply_sprs32 (sprs32
.pt_iar
, sprs32
.pt_msr
, sprs32
.pt_cr
,
1184 sprs32
.pt_lr
, sprs32
.pt_ctr
, sprs32
.pt_xer
);
1186 if (REGISTER_RAW_SIZE (LAST_UISA_SP_REGNUM
))
1187 supply_register (LAST_UISA_SP_REGNUM
, (char *) &sprs32
.pt_mq
);
1192 /* Fetch register REGNO if != -1 or all registers otherwise in the
1193 thread/process specified by inferior_ptid. */
1196 ops_fetch_registers (int regno
)
1198 struct thread_info
*thread
;
1201 if (!PD_TID (inferior_ptid
))
1202 base_ops
.to_fetch_registers (regno
);
1205 thread
= find_thread_pid (inferior_ptid
);
1206 tid
= thread
->private->tid
;
1208 if (tid
== PTHDB_INVALID_TID
)
1209 fetch_regs_lib (thread
->private->pdtid
);
1211 fetch_regs_kern (regno
, tid
);
1215 /* Store the gp registers into an array of uint32_t or uint64_t. */
1218 fill_gprs64 (uint64_t *vals
)
1222 for (regno
= 0; regno
< FP0_REGNUM
; regno
++)
1223 regcache_collect (regno
, vals
+ regno
);
1227 fill_gprs32 (uint32_t *vals
)
1231 for (regno
= 0; regno
< FP0_REGNUM
; regno
++)
1232 regcache_collect (regno
, vals
+ regno
);
1235 /* Store the floating point registers into a double array. */
1237 fill_fprs (double *vals
)
1241 for (regno
= FP0_REGNUM
; regno
< FPLAST_REGNUM
; regno
++)
1242 regcache_collect (regno
, vals
+ regno
);
1245 /* Store the special registers into the specified 64-bit and 32-bit
1249 fill_sprs64 (uint64_t *iar
, uint64_t *msr
, uint32_t *cr
,
1250 uint64_t *lr
, uint64_t *ctr
, uint32_t *xer
)
1252 int regno
= FIRST_UISA_SP_REGNUM
;
1254 gdb_assert (sizeof (*iar
) == REGISTER_RAW_SIZE (regno
));
1256 regcache_collect (regno
, iar
);
1257 regcache_collect (regno
+ 1, msr
);
1258 regcache_collect (regno
+ 2, cr
);
1259 regcache_collect (regno
+ 3, lr
);
1260 regcache_collect (regno
+ 4, ctr
);
1261 regcache_collect (regno
+ 5, xer
);
1265 fill_sprs32 (unsigned long *iar
, unsigned long *msr
, unsigned long *cr
,
1266 unsigned long *lr
, unsigned long *ctr
, unsigned long *xer
)
1268 int regno
= FIRST_UISA_SP_REGNUM
;
1270 /* If this assert() fails, the most likely reason is that GDB was
1271 built incorrectly. In order to make use of many of the header
1272 files in /usr/include/sys, GDB needs to be configured so that
1273 sizeof (long) == 4). */
1274 gdb_assert (sizeof (*iar
) == REGISTER_RAW_SIZE (regno
));
1276 regcache_collect (regno
, iar
);
1277 regcache_collect (regno
+ 1, msr
);
1278 regcache_collect (regno
+ 2, cr
);
1279 regcache_collect (regno
+ 3, lr
);
1280 regcache_collect (regno
+ 4, ctr
);
1281 regcache_collect (regno
+ 5, xer
);
1284 /* Store all registers into pthread PDTID, which doesn't have a kernel
1287 It's possible to store a single register into a non-kernel pthread,
1288 but I doubt it's worth the effort. */
1291 store_regs_lib (pthdb_pthread_t pdtid
)
1294 pthdb_context_t ctx
;
1299 if (debug_aix_thread
)
1300 fprintf_unfiltered (gdb_stdlog
,
1301 "store_regs_lib %lx\n", (long)pdtid
);
1303 /* Retrieve the thread's current context for its non-register
1305 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1306 if (status
!= PTHDB_SUCCESS
)
1307 error ("aix-thread: store_registers: pthdb_pthread_context returned %s",
1308 pd_status2str (status
));
1310 /* Collect general-purpose register values from the regcache. */
1312 for (i
= 0; i
< 32; i
++)
1316 regcache_collect (i
, (void *) &int64
);
1321 regcache_collect (i
, (void *) &int32
);
1326 /* Collect floating-point register values from the regcache. */
1327 fill_fprs (ctx
.fpr
);
1329 /* Special registers (always kept in ctx as 64 bits). */
1332 fill_sprs64 (&ctx
.iar
, &ctx
.msr
, &ctx
.cr
, &ctx
.lr
, &ctx
.ctr
, &ctx
.xer
);
1336 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1337 Solution: use 32-bit temp variables. (The assert() in fill_sprs32()
1338 will fail if the size of an unsigned long is incorrect. If this
1339 happens, GDB needs to be reconfigured so that longs are 32-bits.) */
1340 unsigned long tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
;
1342 fill_sprs32 (&tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
, &tmp_ctr
, &tmp_xer
);
1351 status
= pthdb_pthread_setcontext (pd_session
, pdtid
, &ctx
);
1352 if (status
!= PTHDB_SUCCESS
)
1353 error ("aix-thread: store_registers: pthdb_pthread_setcontext returned %s",
1354 pd_status2str (status
));
1357 /* Store register REGNO if != -1 or all registers otherwise into
1360 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1361 SPRs, but there's no way to set individual registers within those
1362 groups. Therefore, if REGNO != -1, this function stores an entire
1366 store_regs_kern (int regno
, pthdb_tid_t tid
)
1368 uint64_t gprs64
[32];
1369 uint32_t gprs32
[32];
1371 struct ptxsprs sprs64
;
1372 struct ptsprs sprs32
;
1375 if (debug_aix_thread
)
1376 fprintf_unfiltered (gdb_stdlog
, "store_regs_kern tid=%lx regno=%d\n",
1379 /* General-purpose registers. */
1380 if (regno
== -1 || regno
< FP0_REGNUM
)
1384 fill_gprs64 (gprs64
);
1385 ptrace64aix (PTT_WRITE_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1389 fill_gprs32 (gprs32
);
1390 ptrace32 (PTT_WRITE_GPRS
, tid
, gprs32
, 0, NULL
);
1394 /* Floating-point registers. */
1396 if (regno
== -1 || (regno
>= FP0_REGNUM
&& regno
<= FPLAST_REGNUM
))
1399 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1402 /* Special-purpose registers. */
1405 (regno
> FPLAST_REGNUM
&& regno
<= LAST_UISA_SP_REGNUM
))
1409 /* Must read first, not all of it's in the cache. */
1410 ptrace64aix (PTT_READ_SPRS
, tid
,
1411 (unsigned long) &sprs64
, 0, NULL
);
1412 fill_sprs64 (&sprs64
.pt_iar
, &sprs64
.pt_msr
, &sprs64
.pt_cr
,
1413 &sprs64
.pt_lr
, &sprs64
.pt_ctr
, &sprs64
.pt_xer
);
1414 ptrace64aix (PTT_WRITE_SPRS
, tid
,
1415 (unsigned long) &sprs64
, 0, NULL
);
1419 /* Must read first, not all of it's in the cache. */
1420 ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1422 fill_sprs32 (&sprs32
.pt_iar
, &sprs32
.pt_msr
, &sprs32
.pt_cr
,
1423 &sprs32
.pt_lr
, &sprs32
.pt_ctr
, &sprs32
.pt_xer
);
1425 if (REGISTER_RAW_SIZE (LAST_UISA_SP_REGNUM
))
1426 regcache_collect (LAST_UISA_SP_REGNUM
, &sprs32
.pt_mq
);
1428 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1433 /* Store gdb's current view of the register set into the
1434 thread/process specified by inferior_ptid. */
1437 ops_store_registers (int regno
)
1439 struct thread_info
*thread
;
1442 if (!PD_TID (inferior_ptid
))
1443 base_ops
.to_store_registers (regno
);
1446 thread
= find_thread_pid (inferior_ptid
);
1447 tid
= thread
->private->tid
;
1449 if (tid
== PTHDB_INVALID_TID
)
1450 store_regs_lib (thread
->private->pdtid
);
1452 store_regs_kern (regno
, tid
);
1456 /* Prepare to copy the register cache to the child:
1457 The register cache must be fully fetched and up to date. */
1460 ops_prepare_to_store (void)
1464 if (!PD_TID (inferior_ptid
))
1465 base_ops
.to_prepare_to_store ();
1467 for (regno
= 0; regno
< NUM_REGS
; regno
++)
1468 if (!register_cached (regno
))
1469 target_fetch_registers (regno
);
1472 /* Transfer LEN bytes of memory from GDB address MYADDR to target
1473 address MEMADDR if WRITE and vice versa otherwise. */
1476 ops_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
1477 struct mem_attrib
*attrib
,
1478 struct target_ops
*target
)
1481 struct cleanup
*cleanup
= save_inferior_ptid ();
1483 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1484 n
= base_ops
.to_xfer_memory (memaddr
, myaddr
, len
,
1485 write
, attrib
, &base_ops
);
1486 do_cleanups (cleanup
);
1491 /* Kill and forget about the inferior process. */
1496 struct cleanup
*cleanup
= save_inferior_ptid ();
1498 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1499 base_ops
.to_kill ();
1500 do_cleanups (cleanup
);
1503 /* Clean up after the inferior exits. */
1506 ops_mourn_inferior (void)
1509 base_ops
.to_mourn_inferior ();
1512 /* Return whether thread PID is still valid. */
1515 ops_thread_alive (ptid_t ptid
)
1518 return base_ops
.to_thread_alive (ptid
);
1520 /* We update the thread list every time the child stops, so all
1521 valid threads should be in the thread list. */
1522 return in_thread_list (ptid
);
1525 /* Return a printable representation of composite PID for use in
1526 "info threads" output. */
1529 ops_pid_to_str (ptid_t ptid
)
1531 static char *ret
= NULL
;
1534 return base_ops
.to_pid_to_str (ptid
);
1536 /* Free previous return value; a new one will be allocated by
1540 xasprintf (&ret
, "Thread %ld", ptid_get_tid (ptid
));
1544 /* Return a printable representation of extra information about
1545 THREAD, for use in "info threads" output. */
1548 ops_extra_thread_info (struct thread_info
*thread
)
1550 struct ui_file
*buf
;
1552 pthdb_pthread_t pdtid
;
1554 pthdb_state_t state
;
1555 pthdb_suspendstate_t suspendstate
;
1556 pthdb_detachstate_t detachstate
;
1559 static char *ret
= NULL
;
1561 if (!PD_TID (thread
->ptid
))
1564 buf
= mem_fileopen ();
1566 pdtid
= thread
->private->pdtid
;
1567 tid
= thread
->private->tid
;
1569 if (tid
!= PTHDB_INVALID_TID
)
1570 fprintf_unfiltered (buf
, "tid %d", tid
);
1572 status
= pthdb_pthread_state (pd_session
, pdtid
, &state
);
1573 if (status
!= PTHDB_SUCCESS
)
1575 fprintf_unfiltered (buf
, ", %s", state2str (state
));
1577 status
= pthdb_pthread_suspendstate (pd_session
, pdtid
,
1579 if (status
== PTHDB_SUCCESS
&& suspendstate
== PSS_SUSPENDED
)
1580 fprintf_unfiltered (buf
, ", suspended");
1582 status
= pthdb_pthread_detachstate (pd_session
, pdtid
,
1584 if (status
== PTHDB_SUCCESS
&& detachstate
== PDS_DETACHED
)
1585 fprintf_unfiltered (buf
, ", detached");
1587 pthdb_pthread_cancelpend (pd_session
, pdtid
, &cancelpend
);
1588 if (status
== PTHDB_SUCCESS
&& cancelpend
)
1589 fprintf_unfiltered (buf
, ", cancel pending");
1591 ui_file_write (buf
, "", 1);
1593 xfree (ret
); /* Free old buffer. */
1595 ret
= ui_file_xstrdup (buf
, &length
);
1596 ui_file_delete (buf
);
1601 /* Initialize target ops. */
1606 ops
.to_shortname
= "aix-threads";
1607 ops
.to_longname
= "AIX pthread support";
1608 ops
.to_doc
= "AIX pthread support";
1610 ops
.to_attach
= ops_attach
;
1611 ops
.to_detach
= ops_detach
;
1612 ops
.to_resume
= ops_resume
;
1613 ops
.to_wait
= ops_wait
;
1614 ops
.to_fetch_registers
= ops_fetch_registers
;
1615 ops
.to_store_registers
= ops_store_registers
;
1616 ops
.to_prepare_to_store
= ops_prepare_to_store
;
1617 ops
.to_xfer_memory
= ops_xfer_memory
;
1618 /* No need for ops.to_create_inferior, because we activate thread
1619 debugging when the inferior reaches pd_brk_addr. */
1620 ops
.to_kill
= ops_kill
;
1621 ops
.to_mourn_inferior
= ops_mourn_inferior
;
1622 ops
.to_thread_alive
= ops_thread_alive
;
1623 ops
.to_pid_to_str
= ops_pid_to_str
;
1624 ops
.to_extra_thread_info
= ops_extra_thread_info
;
1625 ops
.to_stratum
= thread_stratum
;
1626 ops
.to_magic
= OPS_MAGIC
;
1629 /* Module startup initialization function, automagically called by
1633 _initialize_aix_thread (void)
1638 /* Notice when object files get loaded and unloaded. */
1639 target_new_objfile_chain
= target_new_objfile_hook
;
1640 target_new_objfile_hook
= new_objfile
;
1642 add_show_from_set (add_set_cmd ("aix-thread", no_class
, var_zinteger
,
1643 (char *) &debug_aix_thread
,
1644 "Set debugging of AIX thread module.\n"
1645 "Enables printf debugging output.\n",