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"
51 #include "language.h" /* for local_hex_string() */
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.
109 This is more convenient than a pointer to 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
, local_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. */
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
, local_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
, local_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
, local_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
, local_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
)
553 case PST_IDLE
: return "idle"; /* being created */
554 case PST_RUN
: return "running"; /* running */
555 case PST_SLEEP
: return "sleeping"; /* awaiting an event */
556 case PST_READY
: return "ready"; /* runnable */
557 case PST_TERM
: return "finished"; /* awaiting a join/detach */
558 default: return "unknown";
562 /* qsort() comparison function for sorting pd_thread structs by pthid. */
565 pcmp (const void *p1v
, const void *p2v
)
567 struct pd_thread
*p1
= (struct pd_thread
*) p1v
;
568 struct pd_thread
*p2
= (struct pd_thread
*) p2v
;
569 return p1
->pthid
< p2
->pthid
? -1 : p1
->pthid
> p2
->pthid
;
572 /* iterate_over_threads() callback for counting GDB threads. */
575 giter_count (struct thread_info
*thread
, void *countp
)
581 /* iterate_over_threads() callback for accumulating GDB thread pids. */
584 giter_accum (struct thread_info
*thread
, void *bufp
)
586 **(struct thread_info
***) bufp
= thread
;
587 (*(struct thread_info
***) bufp
)++;
591 /* ptid comparison function */
594 ptid_cmp (ptid_t ptid1
, ptid_t ptid2
)
598 if (ptid_get_pid (ptid1
) < ptid_get_pid (ptid2
))
600 else if (ptid_get_pid (ptid1
) > ptid_get_pid (ptid2
))
602 else if (ptid_get_tid (ptid1
) < ptid_get_tid (ptid2
))
604 else if (ptid_get_tid (ptid1
) > ptid_get_tid (ptid2
))
606 else if (ptid_get_lwp (ptid1
) < ptid_get_lwp (ptid2
))
608 else if (ptid_get_lwp (ptid1
) > ptid_get_lwp (ptid2
))
614 /* qsort() comparison function for sorting thread_info structs by pid. */
617 gcmp (const void *t1v
, const void *t2v
)
619 struct thread_info
*t1
= *(struct thread_info
**) t1v
;
620 struct thread_info
*t2
= *(struct thread_info
**) t2v
;
621 return ptid_cmp (t1
->ptid
, t2
->ptid
);
624 /* Synchronize GDB's thread list with libpthdebug's.
626 There are some benefits of doing this every time the inferior stops:
628 - allows users to run thread-specific commands without needing to
629 run "info threads" first
631 - helps pthdb_tid_pthread() work properly (see "libpthdebug
632 peculiarities" at the top of this module)
634 - simplifies the demands placed on libpthdebug, which seems to
635 have difficulty with certain call patterns */
638 sync_threadlists (void)
640 int cmd
, status
, infpid
;
641 int pcount
, psize
, pi
, gcount
, gi
;
642 struct pd_thread
*pbuf
;
643 struct thread_info
**gbuf
, **g
, *thread
;
644 pthdb_pthread_t pdtid
;
648 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
652 pbuf
= (struct pd_thread
*) xmalloc (psize
* sizeof *pbuf
);
654 for (cmd
= PTHDB_LIST_FIRST
;; cmd
= PTHDB_LIST_NEXT
)
656 status
= pthdb_pthread (pd_session
, &pdtid
, cmd
);
657 if (status
!= PTHDB_SUCCESS
|| pdtid
== PTHDB_INVALID_PTHREAD
)
660 status
= pthdb_pthread_ptid (pd_session
, pdtid
, &pthid
);
661 if (status
!= PTHDB_SUCCESS
|| pthid
== PTHDB_INVALID_PTID
)
667 pbuf
= (struct pd_thread
*) xrealloc (pbuf
,
668 psize
* sizeof *pbuf
);
670 pbuf
[pcount
].pdtid
= pdtid
;
671 pbuf
[pcount
].pthid
= pthid
;
675 for (pi
= 0; pi
< pcount
; pi
++)
677 status
= pthdb_pthread_tid (pd_session
, pbuf
[pi
].pdtid
, &tid
);
678 if (status
!= PTHDB_SUCCESS
)
679 tid
= PTHDB_INVALID_TID
;
683 qsort (pbuf
, pcount
, sizeof *pbuf
, pcmp
);
685 /* Accumulate an array of GDB threads sorted by pid. */
688 iterate_over_threads (giter_count
, &gcount
);
689 g
= gbuf
= (struct thread_info
**) xmalloc (gcount
* sizeof *gbuf
);
690 iterate_over_threads (giter_accum
, &g
);
691 qsort (gbuf
, gcount
, sizeof *gbuf
, gcmp
);
693 /* Apply differences between the two arrays to GDB's thread list. */
695 infpid
= PIDGET (inferior_ptid
);
696 for (pi
= gi
= 0; pi
< pcount
|| gi
< gcount
;)
700 delete_thread (gbuf
[gi
]->ptid
);
703 else if (gi
== gcount
)
705 thread
= add_thread (BUILD_THREAD (pbuf
[pi
].pthid
, infpid
));
706 thread
->private = xmalloc (sizeof (struct private_thread_info
));
707 thread
->private->pdtid
= pbuf
[pi
].pdtid
;
708 thread
->private->tid
= pbuf
[pi
].tid
;
716 pptid
= BUILD_THREAD (pbuf
[pi
].pthid
, infpid
);
717 gptid
= gbuf
[gi
]->ptid
;
718 pdtid
= pbuf
[pi
].pdtid
;
721 cmp_result
= ptid_cmp (pptid
, gptid
);
725 gbuf
[gi
]->private->pdtid
= pdtid
;
726 gbuf
[gi
]->private->tid
= tid
;
730 else if (cmp_result
> 0)
732 delete_thread (gptid
);
737 thread
= add_thread (pptid
);
738 thread
->private = xmalloc (sizeof (struct private_thread_info
));
739 thread
->private->pdtid
= pdtid
;
740 thread
->private->tid
= tid
;
750 /* Iterate_over_threads() callback for locating a thread whose kernel
751 thread just received a trap signal. */
754 iter_trap (struct thread_info
*thread
, void *unused
)
756 struct thrdsinfo64 thrinf
;
759 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
760 extern int getthrds (pid_t
, struct thrdsinfo64
*,
761 int, pthdb_tid_t
*, int);
763 tid
= thread
->private->tid
;
764 if (tid
== PTHDB_INVALID_TID
)
767 if (getthrds (PIDGET (inferior_ptid
), &thrinf
,
768 sizeof (thrinf
), &tid
, 1) != 1)
771 return thrinf
.ti_cursig
== SIGTRAP
;
774 /* Synchronize libpthdebug's state with the inferior and with GDB,
775 generate a composite process/thread <pid> for the current thread,
776 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
779 pd_update (int set_infpid
)
783 struct thread_info
*thread
;
786 return inferior_ptid
;
788 status
= pthdb_session_update (pd_session
);
789 if (status
!= PTHDB_SUCCESS
)
790 return inferior_ptid
;
794 /* Define "current thread" as one that just received a trap signal. */
796 thread
= iterate_over_threads (iter_trap
, NULL
);
798 ptid
= inferior_ptid
;
803 inferior_ptid
= ptid
;
808 /* Try to start debugging threads in the current process.
809 If successful and SET_INFPID, set inferior_ptid to reflect the
813 pd_activate (int set_infpid
)
817 status
= pthdb_session_init (PD_USER
, arch64
? PEM_64BIT
: PEM_32BIT
,
818 PTHDB_FLAG_REGS
, &pd_callbacks
,
820 if (status
!= PTHDB_SUCCESS
)
822 return inferior_ptid
;
825 return pd_update (set_infpid
);
828 /* Undo the effects of pd_activate(). */
835 pthdb_session_destroy (pd_session
);
837 pid_to_prc (&inferior_ptid
);
841 /* An object file has just been loaded. Check whether the current
842 application is pthreaded, and if so, prepare for thread debugging. */
849 struct minimal_symbol
*ms
;
851 /* Don't initialize twice. */
855 /* Check application word size. */
856 arch64
= DEPRECATED_REGISTER_RAW_SIZE (0) == 8;
858 /* Check whether the application is pthreaded. */
860 status
= pthdb_session_pthreaded (PD_USER
, PTHDB_FLAG_REGS
,
861 &pd_callbacks
, &stub_name
);
862 if ((status
!= PTHDB_SUCCESS
&&
863 status
!= PTHDB_NOT_PTHREADED
) || !stub_name
)
866 /* Set a breakpoint on the returned stub function. */
867 if (!(ms
= lookup_minimal_symbol (stub_name
, NULL
, NULL
)))
869 pd_brk_addr
= SYMBOL_VALUE_ADDRESS (ms
);
870 if (!create_thread_event_breakpoint (pd_brk_addr
))
873 /* Prepare for thread debugging. */
874 base_target
= current_target
;
875 push_target (&aix_thread_ops
);
878 /* If we're debugging a core file or an attached inferior, the
879 pthread library may already have been initialized, so try to
880 activate thread debugging. */
884 /* Undo the effects of pd_enable(). */
894 unpush_target (&aix_thread_ops
);
897 /* deprecated_target_new_objfile_hook callback.
899 If OBJFILE is non-null, check whether a threaded application is
900 being debugged, and if so, prepare for thread debugging.
902 If OBJFILE is null, stop debugging threads. */
905 new_objfile (struct objfile
*objfile
)
912 if (target_new_objfile_chain
)
913 target_new_objfile_chain (objfile
);
916 /* Attach to process specified by ARGS. */
919 aix_thread_attach (char *args
, int from_tty
)
921 base_target
.to_attach (args
, from_tty
);
925 /* Detach from the process attached to by aix_thread_attach(). */
928 aix_thread_detach (char *args
, int from_tty
)
931 base_target
.to_detach (args
, from_tty
);
934 /* Tell the inferior process to continue running thread PID if != -1
935 and all threads otherwise. */
938 aix_thread_resume (ptid_t ptid
, int step
, enum target_signal sig
)
940 struct thread_info
*thread
;
945 struct cleanup
*cleanup
= save_inferior_ptid ();
946 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
947 base_target
.to_resume (ptid
, step
, sig
);
948 do_cleanups (cleanup
);
952 thread
= find_thread_pid (ptid
);
954 error ("aix-thread resume: unknown pthread %ld",
957 tid
[0] = thread
->private->tid
;
958 if (tid
[0] == PTHDB_INVALID_TID
)
959 error ("aix-thread resume: no tid for pthread %ld",
964 ptrace64aix (PTT_CONTINUE
, tid
[0], 1,
965 target_signal_to_host (sig
), (int *) tid
);
967 ptrace32 (PTT_CONTINUE
, tid
[0], (int *) 1,
968 target_signal_to_host (sig
), (int *) tid
);
972 /* Wait for thread/process ID if != -1 or for any thread otherwise.
973 If an error occurs, return -1, else return the pid of the stopped
977 aix_thread_wait (ptid_t ptid
, struct target_waitstatus
*status
)
979 struct cleanup
*cleanup
= save_inferior_ptid ();
983 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
984 ptid
= base_target
.to_wait (ptid
, status
);
985 do_cleanups (cleanup
);
987 if (PIDGET (ptid
) == -1)
988 return pid_to_ptid (-1);
990 /* Check whether libpthdebug might be ready to be initialized. */
991 if (!pd_active
&& status
->kind
== TARGET_WAITKIND_STOPPED
&&
992 status
->value
.sig
== TARGET_SIGNAL_TRAP
&&
993 read_pc_pid (ptid
) - DECR_PC_AFTER_BREAK
== pd_brk_addr
)
994 return pd_activate (0);
996 return pd_update (0);
999 /* Record that the 64-bit general-purpose registers contain VALS. */
1002 supply_gprs64 (uint64_t *vals
)
1006 for (regno
= 0; regno
< 32; regno
++)
1007 supply_register (regno
, (char *) (vals
+ regno
));
1010 /* Record that 32-bit register REGNO contains VAL. */
1013 supply_reg32 (int regno
, uint32_t val
)
1015 supply_register (regno
, (char *) &val
);
1018 /* Record that the floating-point registers contain VALS. */
1021 supply_fprs (double *vals
)
1023 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1026 /* This function should never be called on architectures without
1027 floating-point registers. */
1028 gdb_assert (ppc_floating_point_p (current_gdbarch
));
1030 for (regno
= 0; regno
< 32; regno
++)
1031 supply_register (regno
+ tdep
->ppc_fp0_regnum
, (char *) (vals
+ regno
));
1034 /* Predicate to test whether given register number is a "special" register. */
1036 special_register_p (int regno
)
1038 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1040 return regno
== PC_REGNUM
1041 || regno
== tdep
->ppc_ps_regnum
1042 || regno
== tdep
->ppc_cr_regnum
1043 || regno
== tdep
->ppc_lr_regnum
1044 || regno
== tdep
->ppc_ctr_regnum
1045 || regno
== tdep
->ppc_xer_regnum
1046 || (tdep
->ppc_fpscr_regnum
>= 0 && regno
== tdep
->ppc_fpscr_regnum
)
1047 || (tdep
->ppc_mq_regnum
>= 0 && regno
== tdep
->ppc_mq_regnum
);
1051 /* Record that the special registers contain the specified 64-bit and
1055 supply_sprs64 (uint64_t iar
, uint64_t msr
, uint32_t cr
,
1056 uint64_t lr
, uint64_t ctr
, uint32_t xer
,
1059 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1061 supply_register (PC_REGNUM
, (char *) &iar
);
1062 supply_register (tdep
->ppc_ps_regnum
, (char *) &msr
);
1063 supply_register (tdep
->ppc_cr_regnum
, (char *) &cr
);
1064 supply_register (tdep
->ppc_lr_regnum
, (char *) &lr
);
1065 supply_register (tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1066 supply_register (tdep
->ppc_xer_regnum
, (char *) &xer
);
1067 if (tdep
->ppc_fpscr_regnum
>= 0)
1068 supply_register (tdep
->ppc_fpscr_regnum
, (char *) &fpscr
);
1071 /* Record that the special registers contain the specified 32-bit
1075 supply_sprs32 (uint32_t iar
, uint32_t msr
, uint32_t cr
,
1076 uint32_t lr
, uint32_t ctr
, uint32_t xer
,
1079 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1081 supply_register (PC_REGNUM
, (char *) &iar
);
1082 supply_register (tdep
->ppc_ps_regnum
, (char *) &msr
);
1083 supply_register (tdep
->ppc_cr_regnum
, (char *) &cr
);
1084 supply_register (tdep
->ppc_lr_regnum
, (char *) &lr
);
1085 supply_register (tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1086 supply_register (tdep
->ppc_xer_regnum
, (char *) &xer
);
1087 if (tdep
->ppc_fpscr_regnum
>= 0)
1088 supply_register (tdep
->ppc_fpscr_regnum
, (char *) &fpscr
);
1091 /* Fetch all registers from pthread PDTID, which doesn't have a kernel
1094 There's no way to query a single register from a non-kernel
1095 pthread, so there's no need for a single-register version of this
1099 fetch_regs_user_thread (pthdb_pthread_t pdtid
)
1102 pthdb_context_t ctx
;
1104 if (debug_aix_thread
)
1105 fprintf_unfiltered (gdb_stdlog
,
1106 "fetch_regs_user_thread %lx\n", (long) pdtid
);
1107 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1108 if (status
!= PTHDB_SUCCESS
)
1109 error ("aix-thread: fetch_registers: pthdb_pthread_context returned %s",
1110 pd_status2str (status
));
1112 /* General-purpose registers. */
1115 supply_gprs64 (ctx
.gpr
);
1117 for (i
= 0; i
< 32; i
++)
1118 supply_reg32 (i
, ctx
.gpr
[i
]);
1120 /* Floating-point registers. */
1122 if (ppc_floating_point_p (current_gdbarch
))
1123 supply_fprs (ctx
.fpr
);
1125 /* Special registers. */
1128 supply_sprs64 (ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
, ctx
.xer
,
1131 supply_sprs32 (ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
, ctx
.xer
,
1135 /* Fetch register REGNO if != -1 or all registers otherwise from
1138 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1139 SPRs, but there's no way to query individual registers within those
1140 groups. Therefore, if REGNO != -1, this function fetches an entire
1143 Unfortunately, kernel thread register queries often fail with
1144 EPERM, indicating that the thread is in kernel space. This breaks
1145 backtraces of threads other than the current one. To make that
1146 breakage obvious without throwing an error to top level (which is
1147 bad e.g. during "info threads" output), zero registers that can't
1151 fetch_regs_kernel_thread (int regno
, pthdb_tid_t tid
)
1153 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1154 uint64_t gprs64
[32];
1155 uint32_t gprs32
[32];
1157 struct ptxsprs sprs64
;
1158 struct ptsprs sprs32
;
1161 if (debug_aix_thread
)
1162 fprintf_unfiltered (gdb_stdlog
,
1163 "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
1164 (long) tid
, regno
, arch64
);
1166 /* General-purpose registers. */
1168 || (tdep
->ppc_gp0_regnum
<= regno
1169 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_gprs
))
1173 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
1174 (unsigned long) gprs64
, 0, NULL
))
1175 memset (gprs64
, 0, sizeof (gprs64
));
1176 supply_gprs64 (gprs64
);
1180 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
1181 memset (gprs32
, 0, sizeof (gprs32
));
1182 for (i
= 0; i
< 32; i
++)
1183 supply_reg32 (i
, gprs32
[i
]);
1187 /* Floating-point registers. */
1189 if (ppc_floating_point_unit_p (current_gdbarch
)
1191 || (regno
>= tdep
->ppc_fp0_regnum
1192 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1194 if (!ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
))
1195 memset (fprs
, 0, sizeof (fprs
));
1199 /* Special-purpose registers. */
1201 if (regno
== -1 || special_register_p (regno
))
1205 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
1206 (unsigned long) &sprs64
, 0, NULL
))
1207 memset (&sprs64
, 0, sizeof (sprs64
));
1208 supply_sprs64 (sprs64
.pt_iar
, sprs64
.pt_msr
, sprs64
.pt_cr
,
1209 sprs64
.pt_lr
, sprs64
.pt_ctr
, sprs64
.pt_xer
,
1214 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1216 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
1217 memset (&sprs32
, 0, sizeof (sprs32
));
1218 supply_sprs32 (sprs32
.pt_iar
, sprs32
.pt_msr
, sprs32
.pt_cr
,
1219 sprs32
.pt_lr
, sprs32
.pt_ctr
, sprs32
.pt_xer
,
1222 if (tdep
->ppc_mq_regnum
>= 0)
1223 supply_register (tdep
->ppc_mq_regnum
, (char *) &sprs32
.pt_mq
);
1228 /* Fetch register REGNO if != -1 or all registers otherwise in the
1229 thread/process specified by inferior_ptid. */
1232 aix_thread_fetch_registers (int regno
)
1234 struct thread_info
*thread
;
1237 if (!PD_TID (inferior_ptid
))
1238 base_target
.to_fetch_registers (regno
);
1241 thread
= find_thread_pid (inferior_ptid
);
1242 tid
= thread
->private->tid
;
1244 if (tid
== PTHDB_INVALID_TID
)
1245 fetch_regs_user_thread (thread
->private->pdtid
);
1247 fetch_regs_kernel_thread (regno
, tid
);
1251 /* Store the gp registers into an array of uint32_t or uint64_t. */
1254 fill_gprs64 (uint64_t *vals
)
1256 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1259 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1260 if (register_cached (tdep
->ppc_gp0_regnum
+ regno
))
1261 regcache_collect (tdep
->ppc_gp0_regnum
+ regno
, vals
+ regno
);
1265 fill_gprs32 (uint32_t *vals
)
1267 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1270 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1271 if (register_cached (tdep
->ppc_gp0_regnum
+ regno
))
1272 regcache_collect (tdep
->ppc_gp0_regnum
+ regno
, vals
+ regno
);
1275 /* Store the floating point registers into a double array. */
1277 fill_fprs (double *vals
)
1279 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1282 /* This function should never be called on architectures without
1283 floating-point registers. */
1284 gdb_assert (ppc_floating_point_p (current_gdbarch
));
1286 for (regno
= tdep
->ppc_fp0_regnum
;
1287 regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
;
1289 if (register_cached (regno
))
1290 regcache_collect (regno
, vals
+ regno
);
1293 /* Store the special registers into the specified 64-bit and 32-bit
1297 fill_sprs64 (uint64_t *iar
, uint64_t *msr
, uint32_t *cr
,
1298 uint64_t *lr
, uint64_t *ctr
, uint32_t *xer
,
1301 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1303 /* Verify that the size of the size of the IAR buffer is the
1304 same as the raw size of the PC (in the register cache). If
1305 they're not, then either GDB has been built incorrectly, or
1306 there's some other kind of internal error. To be really safe,
1307 we should check all of the sizes. */
1308 gdb_assert (sizeof (*iar
) == DEPRECATED_REGISTER_RAW_SIZE (PC_REGNUM
));
1310 if (register_cached (PC_REGNUM
))
1311 regcache_collect (PC_REGNUM
, iar
);
1312 if (register_cached (tdep
->ppc_ps_regnum
))
1313 regcache_collect (tdep
->ppc_ps_regnum
, msr
);
1314 if (register_cached (tdep
->ppc_cr_regnum
))
1315 regcache_collect (tdep
->ppc_cr_regnum
, cr
);
1316 if (register_cached (tdep
->ppc_lr_regnum
))
1317 regcache_collect (tdep
->ppc_lr_regnum
, lr
);
1318 if (register_cached (tdep
->ppc_ctr_regnum
))
1319 regcache_collect (tdep
->ppc_ctr_regnum
, ctr
);
1320 if (register_cached (tdep
->ppc_xer_regnum
))
1321 regcache_collect (tdep
->ppc_xer_regnum
, xer
);
1322 if (tdep
->ppc_fpscr_regnum
>= 0
1323 && register_cached (tdep
->ppc_fpscr_regnum
))
1324 regcache_collect (tdep
->ppc_fpscr_regnum
, fpscr
);
1328 fill_sprs32 (unsigned long *iar
, unsigned long *msr
, unsigned long *cr
,
1329 unsigned long *lr
, unsigned long *ctr
, unsigned long *xer
,
1330 unsigned long *fpscr
)
1332 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1334 /* Verify that the size of the size of the IAR buffer is the
1335 same as the raw size of the PC (in the register cache). If
1336 they're not, then either GDB has been built incorrectly, or
1337 there's some other kind of internal error. To be really safe,
1338 we should check all of the sizes.
1340 If this assert() fails, the most likely reason is that GDB was
1341 built incorrectly. In order to make use of many of the header
1342 files in /usr/include/sys, GDB needs to be configured so that
1343 sizeof (long) == 4). */
1344 gdb_assert (sizeof (*iar
) == DEPRECATED_REGISTER_RAW_SIZE (PC_REGNUM
));
1346 if (register_cached (PC_REGNUM
))
1347 regcache_collect (PC_REGNUM
, iar
);
1348 if (register_cached (tdep
->ppc_ps_regnum
))
1349 regcache_collect (tdep
->ppc_ps_regnum
, msr
);
1350 if (register_cached (tdep
->ppc_cr_regnum
))
1351 regcache_collect (tdep
->ppc_cr_regnum
, cr
);
1352 if (register_cached (tdep
->ppc_lr_regnum
))
1353 regcache_collect (tdep
->ppc_lr_regnum
, lr
);
1354 if (register_cached (tdep
->ppc_ctr_regnum
))
1355 regcache_collect (tdep
->ppc_ctr_regnum
, ctr
);
1356 if (register_cached (tdep
->ppc_xer_regnum
))
1357 regcache_collect (tdep
->ppc_xer_regnum
, xer
);
1358 if (tdep
->ppc_fpscr_regnum
>= 0
1359 && register_cached (tdep
->ppc_fpscr_regnum
))
1360 regcache_collect (tdep
->ppc_fpscr_regnum
, fpscr
);
1363 /* Store all registers into pthread PDTID, which doesn't have a kernel
1366 It's possible to store a single register into a non-kernel pthread,
1367 but I doubt it's worth the effort. */
1370 store_regs_user_thread (pthdb_pthread_t pdtid
)
1373 pthdb_context_t ctx
;
1378 if (debug_aix_thread
)
1379 fprintf_unfiltered (gdb_stdlog
,
1380 "store_regs_user_thread %lx\n", (long) pdtid
);
1382 /* Retrieve the thread's current context for its non-register
1384 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1385 if (status
!= PTHDB_SUCCESS
)
1386 error ("aix-thread: store_registers: pthdb_pthread_context returned %s",
1387 pd_status2str (status
));
1389 /* Collect general-purpose register values from the regcache. */
1391 for (i
= 0; i
< 32; i
++)
1392 if (register_cached (i
))
1396 regcache_collect (i
, (void *) &int64
);
1401 regcache_collect (i
, (void *) &int32
);
1406 /* Collect floating-point register values from the regcache. */
1407 if (ppc_floating_point_p (current_gdbarch
))
1408 fill_fprs (ctx
.fpr
);
1410 /* Special registers (always kept in ctx as 64 bits). */
1413 fill_sprs64 (&ctx
.iar
, &ctx
.msr
, &ctx
.cr
, &ctx
.lr
, &ctx
.ctr
, &ctx
.xer
,
1418 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1419 Solution: use 32-bit temp variables. (The assert() in fill_sprs32()
1420 will fail if the size of an unsigned long is incorrect. If this
1421 happens, GDB needs to be reconfigured so that longs are 32-bits.) */
1422 unsigned long tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1424 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1426 fill_sprs32 (&tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
, &tmp_ctr
, &tmp_xer
,
1428 if (register_cached (PC_REGNUM
))
1430 if (register_cached (tdep
->ppc_ps_regnum
))
1432 if (register_cached (tdep
->ppc_cr_regnum
))
1434 if (register_cached (tdep
->ppc_lr_regnum
))
1436 if (register_cached (tdep
->ppc_ctr_regnum
))
1438 if (register_cached (tdep
->ppc_xer_regnum
))
1440 if (register_cached (tdep
->ppc_xer_regnum
))
1441 ctx
.fpscr
= tmp_fpscr
;
1444 status
= pthdb_pthread_setcontext (pd_session
, pdtid
, &ctx
);
1445 if (status
!= PTHDB_SUCCESS
)
1446 error ("aix-thread: store_registers: pthdb_pthread_setcontext returned %s",
1447 pd_status2str (status
));
1450 /* Store register REGNO if != -1 or all registers otherwise into
1453 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1454 SPRs, but there's no way to set individual registers within those
1455 groups. Therefore, if REGNO != -1, this function stores an entire
1459 store_regs_kernel_thread (int regno
, pthdb_tid_t tid
)
1461 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1462 uint64_t gprs64
[32];
1463 uint32_t gprs32
[32];
1465 struct ptxsprs sprs64
;
1466 struct ptsprs sprs32
;
1468 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1470 if (debug_aix_thread
)
1471 fprintf_unfiltered (gdb_stdlog
,
1472 "store_regs_kernel_thread tid=%lx regno=%d\n",
1475 /* General-purpose registers. */
1477 || (tdep
->ppc_gp0_regnum
<= regno
1478 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_fprs
))
1482 /* Pre-fetch: some regs may not be in the cache. */
1483 ptrace64aix (PTT_READ_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1484 fill_gprs64 (gprs64
);
1485 ptrace64aix (PTT_WRITE_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1489 /* Pre-fetch: some regs may not be in the cache. */
1490 ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
);
1491 fill_gprs32 (gprs32
);
1492 ptrace32 (PTT_WRITE_GPRS
, tid
, gprs32
, 0, NULL
);
1496 /* Floating-point registers. */
1498 if (ppc_floating_point_unit_p (current_gdbarch
)
1500 || (regno
>= tdep
->ppc_fp0_regnum
1501 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1503 /* Pre-fetch: some regs may not be in the cache. */
1504 ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1506 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1509 /* Special-purpose registers. */
1511 if (regno
== -1 || special_register_p (regno
))
1515 /* Pre-fetch: some registers won't be in the cache. */
1516 ptrace64aix (PTT_READ_SPRS
, tid
,
1517 (unsigned long) &sprs64
, 0, NULL
);
1518 fill_sprs64 (&sprs64
.pt_iar
, &sprs64
.pt_msr
, &sprs64
.pt_cr
,
1519 &sprs64
.pt_lr
, &sprs64
.pt_ctr
, &sprs64
.pt_xer
,
1521 ptrace64aix (PTT_WRITE_SPRS
, tid
,
1522 (unsigned long) &sprs64
, 0, NULL
);
1526 /* Pre-fetch: some registers won't be in the cache. */
1527 ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1529 fill_sprs32 (&sprs32
.pt_iar
, &sprs32
.pt_msr
, &sprs32
.pt_cr
,
1530 &sprs32
.pt_lr
, &sprs32
.pt_ctr
, &sprs32
.pt_xer
,
1533 if (tdep
->ppc_mq_regnum
>= 0)
1534 if (register_cached (tdep
->ppc_mq_regnum
))
1535 regcache_collect (tdep
->ppc_mq_regnum
, &sprs32
.pt_mq
);
1537 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1542 /* Store gdb's current view of the register set into the
1543 thread/process specified by inferior_ptid. */
1546 aix_thread_store_registers (int regno
)
1548 struct thread_info
*thread
;
1551 if (!PD_TID (inferior_ptid
))
1552 base_target
.to_store_registers (regno
);
1555 thread
= find_thread_pid (inferior_ptid
);
1556 tid
= thread
->private->tid
;
1558 if (tid
== PTHDB_INVALID_TID
)
1559 store_regs_user_thread (thread
->private->pdtid
);
1561 store_regs_kernel_thread (regno
, tid
);
1565 /* Transfer LEN bytes of memory from GDB address MYADDR to target
1566 address MEMADDR if WRITE and vice versa otherwise. */
1569 aix_thread_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
1570 struct mem_attrib
*attrib
,
1571 struct target_ops
*target
)
1574 struct cleanup
*cleanup
= save_inferior_ptid ();
1576 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1577 n
= base_target
.to_xfer_memory (memaddr
, myaddr
, len
,
1578 write
, attrib
, &base_target
);
1579 do_cleanups (cleanup
);
1584 /* Kill and forget about the inferior process. */
1587 aix_thread_kill (void)
1589 struct cleanup
*cleanup
= save_inferior_ptid ();
1591 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1592 base_target
.to_kill ();
1593 do_cleanups (cleanup
);
1596 /* Clean up after the inferior exits. */
1599 aix_thread_mourn_inferior (void)
1602 base_target
.to_mourn_inferior ();
1605 /* Return whether thread PID is still valid. */
1608 aix_thread_thread_alive (ptid_t ptid
)
1611 return base_target
.to_thread_alive (ptid
);
1613 /* We update the thread list every time the child stops, so all
1614 valid threads should be in the thread list. */
1615 return in_thread_list (ptid
);
1618 /* Return a printable representation of composite PID for use in
1619 "info threads" output. */
1622 aix_thread_pid_to_str (ptid_t ptid
)
1624 static char *ret
= NULL
;
1627 return base_target
.to_pid_to_str (ptid
);
1629 /* Free previous return value; a new one will be allocated by
1633 xasprintf (&ret
, "Thread %ld", ptid_get_tid (ptid
));
1637 /* Return a printable representation of extra information about
1638 THREAD, for use in "info threads" output. */
1641 aix_thread_extra_thread_info (struct thread_info
*thread
)
1643 struct ui_file
*buf
;
1645 pthdb_pthread_t pdtid
;
1647 pthdb_state_t state
;
1648 pthdb_suspendstate_t suspendstate
;
1649 pthdb_detachstate_t detachstate
;
1652 static char *ret
= NULL
;
1654 if (!PD_TID (thread
->ptid
))
1657 buf
= mem_fileopen ();
1659 pdtid
= thread
->private->pdtid
;
1660 tid
= thread
->private->tid
;
1662 if (tid
!= PTHDB_INVALID_TID
)
1663 fprintf_unfiltered (buf
, "tid %d", tid
);
1665 status
= pthdb_pthread_state (pd_session
, pdtid
, &state
);
1666 if (status
!= PTHDB_SUCCESS
)
1668 fprintf_unfiltered (buf
, ", %s", state2str (state
));
1670 status
= pthdb_pthread_suspendstate (pd_session
, pdtid
,
1672 if (status
== PTHDB_SUCCESS
&& suspendstate
== PSS_SUSPENDED
)
1673 fprintf_unfiltered (buf
, ", suspended");
1675 status
= pthdb_pthread_detachstate (pd_session
, pdtid
,
1677 if (status
== PTHDB_SUCCESS
&& detachstate
== PDS_DETACHED
)
1678 fprintf_unfiltered (buf
, ", detached");
1680 pthdb_pthread_cancelpend (pd_session
, pdtid
, &cancelpend
);
1681 if (status
== PTHDB_SUCCESS
&& cancelpend
)
1682 fprintf_unfiltered (buf
, ", cancel pending");
1684 ui_file_write (buf
, "", 1);
1686 xfree (ret
); /* Free old buffer. */
1688 ret
= ui_file_xstrdup (buf
, &length
);
1689 ui_file_delete (buf
);
1694 /* Initialize target aix_thread_ops. */
1697 init_aix_thread_ops (void)
1699 aix_thread_ops
.to_shortname
= "aix-threads";
1700 aix_thread_ops
.to_longname
= "AIX pthread support";
1701 aix_thread_ops
.to_doc
= "AIX pthread support";
1703 aix_thread_ops
.to_attach
= aix_thread_attach
;
1704 aix_thread_ops
.to_detach
= aix_thread_detach
;
1705 aix_thread_ops
.to_resume
= aix_thread_resume
;
1706 aix_thread_ops
.to_wait
= aix_thread_wait
;
1707 aix_thread_ops
.to_fetch_registers
= aix_thread_fetch_registers
;
1708 aix_thread_ops
.to_store_registers
= aix_thread_store_registers
;
1709 aix_thread_ops
.to_xfer_memory
= aix_thread_xfer_memory
;
1710 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1711 debugging when the inferior reaches pd_brk_addr. */
1712 aix_thread_ops
.to_kill
= aix_thread_kill
;
1713 aix_thread_ops
.to_mourn_inferior
= aix_thread_mourn_inferior
;
1714 aix_thread_ops
.to_thread_alive
= aix_thread_thread_alive
;
1715 aix_thread_ops
.to_pid_to_str
= aix_thread_pid_to_str
;
1716 aix_thread_ops
.to_extra_thread_info
= aix_thread_extra_thread_info
;
1717 aix_thread_ops
.to_stratum
= thread_stratum
;
1718 aix_thread_ops
.to_magic
= OPS_MAGIC
;
1721 /* Module startup initialization function, automagically called by
1725 _initialize_aix_thread (void)
1727 init_aix_thread_ops ();
1728 add_target (&aix_thread_ops
);
1730 /* Notice when object files get loaded and unloaded. */
1731 target_new_objfile_chain
= deprecated_target_new_objfile_hook
;
1732 deprecated_target_new_objfile_hook
= new_objfile
;
1734 add_show_from_set (add_set_cmd ("aix-thread", no_class
, var_zinteger
,
1735 (char *) &debug_aix_thread
,
1736 "Set debugging of AIX thread module.\n"
1737 "Enables printf debugging output.\n",