1 /* Low level interface for debugging AIX 4.3+ pthreads.
3 Copyright (C) 1999, 2000, 2002, 2007, 2008, 2009
4 Free Software Foundation, Inc.
5 Written by Nick Duffek <nsd@redhat.com>.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 /* This module uses the libpthdebug.a library provided by AIX 4.3+ for
24 debugging pthread applications.
26 Some name prefix conventions:
27 pthdb_ provided by libpthdebug.a
28 pdc_ callbacks that this module provides to libpthdebug.a
29 pd_ variables or functions interfacing with libpthdebug.a
31 libpthdebug peculiarities:
33 - pthdb_ptid_pthread() is prototyped in <sys/pthdebug.h>, but
34 it's not documented, and after several calls it stops working
35 and causes other libpthdebug functions to fail.
37 - pthdb_tid_pthread() doesn't always work after
38 pthdb_session_update(), but it does work after cycling through
39 all threads using pthdb_pthread().
44 #include "gdb_assert.h"
45 #include "gdbthread.h"
51 #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 /* Address of the function that libpthread will call when libpthdebug
109 is ready to be initialized. */
111 static CORE_ADDR pd_brk_addr
;
113 /* Whether the current application is debuggable by pthdb. */
115 static int pd_able
= 0;
117 /* Whether a threaded application is being debugged. */
119 static int pd_active
= 0;
121 /* Whether the current architecture is 64-bit.
122 Only valid when pd_able is true. */
126 /* Forward declarations for pthdb callbacks. */
128 static int pdc_symbol_addrs (pthdb_user_t
, pthdb_symbol_t
*, int);
129 static int pdc_read_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
130 static int pdc_write_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
131 static int pdc_read_regs (pthdb_user_t user
, pthdb_tid_t tid
,
132 unsigned long long flags
,
133 pthdb_context_t
*context
);
134 static int pdc_write_regs (pthdb_user_t user
, pthdb_tid_t tid
,
135 unsigned long long flags
,
136 pthdb_context_t
*context
);
137 static int pdc_alloc (pthdb_user_t
, size_t, void **);
138 static int pdc_realloc (pthdb_user_t
, void *, size_t, void **);
139 static int pdc_dealloc (pthdb_user_t
, void *);
141 /* pthdb callbacks. */
143 static pthdb_callbacks_t pd_callbacks
= {
155 /* Current pthdb session. */
157 static pthdb_session_t pd_session
;
159 /* Return a printable representation of pthdebug function return
163 pd_status2str (int status
)
167 case PTHDB_SUCCESS
: return "SUCCESS";
168 case PTHDB_NOSYS
: return "NOSYS";
169 case PTHDB_NOTSUP
: return "NOTSUP";
170 case PTHDB_BAD_VERSION
: return "BAD_VERSION";
171 case PTHDB_BAD_USER
: return "BAD_USER";
172 case PTHDB_BAD_SESSION
: return "BAD_SESSION";
173 case PTHDB_BAD_MODE
: return "BAD_MODE";
174 case PTHDB_BAD_FLAGS
: return "BAD_FLAGS";
175 case PTHDB_BAD_CALLBACK
: return "BAD_CALLBACK";
176 case PTHDB_BAD_POINTER
: return "BAD_POINTER";
177 case PTHDB_BAD_CMD
: return "BAD_CMD";
178 case PTHDB_BAD_PTHREAD
: return "BAD_PTHREAD";
179 case PTHDB_BAD_ATTR
: return "BAD_ATTR";
180 case PTHDB_BAD_MUTEX
: return "BAD_MUTEX";
181 case PTHDB_BAD_MUTEXATTR
: return "BAD_MUTEXATTR";
182 case PTHDB_BAD_COND
: return "BAD_COND";
183 case PTHDB_BAD_CONDATTR
: return "BAD_CONDATTR";
184 case PTHDB_BAD_RWLOCK
: return "BAD_RWLOCK";
185 case PTHDB_BAD_RWLOCKATTR
: return "BAD_RWLOCKATTR";
186 case PTHDB_BAD_KEY
: return "BAD_KEY";
187 case PTHDB_BAD_PTID
: return "BAD_PTID";
188 case PTHDB_BAD_TID
: return "BAD_TID";
189 case PTHDB_CALLBACK
: return "CALLBACK";
190 case PTHDB_CONTEXT
: return "CONTEXT";
191 case PTHDB_HELD
: return "HELD";
192 case PTHDB_NOT_HELD
: return "NOT_HELD";
193 case PTHDB_MEMORY
: return "MEMORY";
194 case PTHDB_NOT_PTHREADED
: return "NOT_PTHREADED";
195 case PTHDB_SYMBOL
: return "SYMBOL";
196 case PTHDB_NOT_AVAIL
: return "NOT_AVAIL";
197 case PTHDB_INTERNAL
: return "INTERNAL";
198 default: return "UNKNOWN";
202 /* A call to ptrace(REQ, ID, ...) just returned RET. Check for
203 exceptional conditions and either return nonlocally or else return
204 1 for success and 0 for failure. */
207 ptrace_check (int req
, int id
, int ret
)
209 if (ret
== 0 && !errno
)
212 /* According to ptrace(2), ptrace may fail with EPERM if "the
213 Identifier parameter corresponds to a kernel thread which is
214 stopped in kernel mode and whose computational state cannot be
215 read or written." This happens quite often with register reads. */
222 if (ret
== -1 && errno
== EPERM
)
224 if (debug_aix_thread
)
225 fprintf_unfiltered (gdb_stdlog
,
226 "ptrace (%d, %d) = %d (errno = %d)\n",
227 req
, id
, ret
, errno
);
228 return ret
== -1 ? 0 : 1;
232 error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"),
233 req
, id
, ret
, errno
, safe_strerror (errno
));
234 return 0; /* Not reached. */
237 /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */
240 ptrace64aix (int req
, int id
, long long addr
, int data
, int *buf
)
243 return ptrace_check (req
, id
, ptracex (req
, id
, addr
, data
, buf
));
246 /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */
249 ptrace32 (int req
, int id
, int *addr
, int data
, int *buf
)
252 return ptrace_check (req
, id
,
253 ptrace (req
, id
, (int *) addr
, data
, buf
));
256 /* If *PIDP is a composite process/thread id, convert it to a
260 pid_to_prc (ptid_t
*ptidp
)
266 *ptidp
= pid_to_ptid (PIDGET (ptid
));
269 /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
270 the address of SYMBOLS[<i>].name. */
273 pdc_symbol_addrs (pthdb_user_t user
, pthdb_symbol_t
*symbols
, int count
)
275 struct minimal_symbol
*ms
;
279 if (debug_aix_thread
)
280 fprintf_unfiltered (gdb_stdlog
,
281 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
282 user
, (long) symbols
, count
);
284 for (i
= 0; i
< count
; i
++)
286 name
= symbols
[i
].name
;
287 if (debug_aix_thread
)
288 fprintf_unfiltered (gdb_stdlog
,
289 " symbols[%d].name = \"%s\"\n", i
, name
);
295 if (!(ms
= lookup_minimal_symbol (name
, NULL
, NULL
)))
297 if (debug_aix_thread
)
298 fprintf_unfiltered (gdb_stdlog
, " returning PDC_FAILURE\n");
301 symbols
[i
].addr
= SYMBOL_VALUE_ADDRESS (ms
);
303 if (debug_aix_thread
)
304 fprintf_unfiltered (gdb_stdlog
, " symbols[%d].addr = %s\n",
305 i
, hex_string (symbols
[i
].addr
));
307 if (debug_aix_thread
)
308 fprintf_unfiltered (gdb_stdlog
, " returning PDC_SUCCESS\n");
312 /* Read registers call back function should be able to read the
313 context information of a debuggee kernel thread from an active
314 process or from a core file. The information should be formatted
315 in context64 form for both 32-bit and 64-bit process.
316 If successful return 0, else non-zero is returned. */
319 pdc_read_regs (pthdb_user_t user
,
321 unsigned long long flags
,
322 pthdb_context_t
*context
)
324 /* This function doesn't appear to be used, so we could probably
325 just return 0 here. HOWEVER, if it is not defined, the OS will
326 complain and several thread debug functions will fail. In case
327 this is needed, I have implemented what I think it should do,
328 however this code is untested. */
330 uint64_t gprs64
[ppc_num_gprs
];
331 uint32_t gprs32
[ppc_num_gprs
];
332 double fprs
[ppc_num_fprs
];
333 struct ptxsprs sprs64
;
334 struct ptsprs sprs32
;
336 if (debug_aix_thread
)
337 fprintf_unfiltered (gdb_stdlog
, "pdc_read_regs tid=%d flags=%s\n",
338 (int) tid
, hex_string (flags
));
340 /* General-purpose registers. */
341 if (flags
& PTHDB_FLAG_GPRS
)
345 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
346 (unsigned long) gprs64
, 0, NULL
))
347 memset (gprs64
, 0, sizeof (gprs64
));
348 memcpy (context
->gpr
, gprs64
, sizeof(gprs64
));
352 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
353 memset (gprs32
, 0, sizeof (gprs32
));
354 memcpy (context
->gpr
, gprs32
, sizeof(gprs32
));
358 /* Floating-point registers. */
359 if (flags
& PTHDB_FLAG_FPRS
)
361 if (!ptrace32 (PTT_READ_FPRS
, tid
, (void *) fprs
, 0, NULL
))
362 memset (fprs
, 0, sizeof (fprs
));
363 memcpy (context
->fpr
, fprs
, sizeof(fprs
));
366 /* Special-purpose registers. */
367 if (flags
& PTHDB_FLAG_SPRS
)
371 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
372 (unsigned long) &sprs64
, 0, NULL
))
373 memset (&sprs64
, 0, sizeof (sprs64
));
374 memcpy (&context
->msr
, &sprs64
, sizeof(sprs64
));
378 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
379 memset (&sprs32
, 0, sizeof (sprs32
));
380 memcpy (&context
->msr
, &sprs32
, sizeof(sprs32
));
386 /* Write register function should be able to write requested context
387 information to specified debuggee's kernel thread id.
388 If successful return 0, else non-zero is returned. */
391 pdc_write_regs (pthdb_user_t user
,
393 unsigned long long flags
,
394 pthdb_context_t
*context
)
396 /* This function doesn't appear to be used, so we could probably
397 just return 0 here. HOWEVER, if it is not defined, the OS will
398 complain and several thread debug functions will fail. In case
399 this is needed, I have implemented what I think it should do,
400 however this code is untested. */
402 if (debug_aix_thread
)
403 fprintf_unfiltered (gdb_stdlog
, "pdc_write_regs tid=%d flags=%s\n",
404 (int) tid
, hex_string (flags
));
406 /* General-purpose registers. */
407 if (flags
& PTHDB_FLAG_GPRS
)
410 ptrace64aix (PTT_WRITE_GPRS
, tid
,
411 (unsigned long) context
->gpr
, 0, NULL
);
413 ptrace32 (PTT_WRITE_GPRS
, tid
, (int *) context
->gpr
, 0, NULL
);
416 /* Floating-point registers. */
417 if (flags
& PTHDB_FLAG_FPRS
)
419 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) context
->fpr
, 0, NULL
);
422 /* Special-purpose registers. */
423 if (flags
& PTHDB_FLAG_SPRS
)
427 ptrace64aix (PTT_WRITE_SPRS
, tid
,
428 (unsigned long) &context
->msr
, 0, NULL
);
432 ptrace32 (PTT_WRITE_SPRS
, tid
, (void *) &context
->msr
, 0, NULL
);
438 /* pthdb callback: read LEN bytes from process ADDR into BUF. */
441 pdc_read_data (pthdb_user_t user
, void *buf
,
442 pthdb_addr_t addr
, size_t len
)
446 if (debug_aix_thread
)
447 fprintf_unfiltered (gdb_stdlog
,
448 "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
449 user
, (long) buf
, hex_string (addr
), len
);
451 status
= target_read_memory (addr
, buf
, len
);
452 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
454 if (debug_aix_thread
)
455 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n",
456 status
, pd_status2str (ret
));
460 /* pthdb callback: write LEN bytes from BUF to process ADDR. */
463 pdc_write_data (pthdb_user_t user
, void *buf
,
464 pthdb_addr_t addr
, size_t len
)
468 if (debug_aix_thread
)
469 fprintf_unfiltered (gdb_stdlog
,
470 "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
471 user
, (long) buf
, hex_string (addr
), len
);
473 status
= target_write_memory (addr
, buf
, len
);
474 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
476 if (debug_aix_thread
)
477 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n", status
,
478 pd_status2str (ret
));
482 /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
486 pdc_alloc (pthdb_user_t user
, size_t len
, void **bufp
)
488 if (debug_aix_thread
)
489 fprintf_unfiltered (gdb_stdlog
,
490 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
491 user
, len
, (long) bufp
);
492 *bufp
= xmalloc (len
);
493 if (debug_aix_thread
)
494 fprintf_unfiltered (gdb_stdlog
,
495 " malloc returned 0x%lx\n", (long) *bufp
);
497 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
500 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
503 /* pthdb callback: reallocate BUF, which was allocated by the alloc or
504 realloc callback, so that it contains LEN bytes, and store a
505 pointer to the result in BUFP. */
508 pdc_realloc (pthdb_user_t user
, void *buf
, size_t len
, void **bufp
)
510 if (debug_aix_thread
)
511 fprintf_unfiltered (gdb_stdlog
,
512 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
513 user
, (long) buf
, len
, (long) bufp
);
514 *bufp
= xrealloc (buf
, len
);
515 if (debug_aix_thread
)
516 fprintf_unfiltered (gdb_stdlog
,
517 " realloc returned 0x%lx\n", (long) *bufp
);
518 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
521 /* pthdb callback: free BUF, which was allocated by the alloc or
525 pdc_dealloc (pthdb_user_t user
, void *buf
)
527 if (debug_aix_thread
)
528 fprintf_unfiltered (gdb_stdlog
,
529 "pdc_free (user = %ld, buf = 0x%lx)\n", user
,
535 /* Return a printable representation of pthread STATE. */
538 state2str (pthdb_state_t state
)
543 /* i18n: Like "Thread-Id %d, [state] idle" */
544 return _("idle"); /* being created */
546 /* i18n: Like "Thread-Id %d, [state] running" */
547 return _("running"); /* running */
549 /* i18n: Like "Thread-Id %d, [state] sleeping" */
550 return _("sleeping"); /* awaiting an event */
552 /* i18n: Like "Thread-Id %d, [state] ready" */
553 return _("ready"); /* runnable */
555 /* i18n: Like "Thread-Id %d, [state] finished" */
556 return _("finished"); /* awaiting a join/detach */
558 /* i18n: Like "Thread-Id %d, [state] unknown" */
563 /* qsort() comparison function for sorting pd_thread structs by pthid. */
566 pcmp (const void *p1v
, const void *p2v
)
568 struct pd_thread
*p1
= (struct pd_thread
*) p1v
;
569 struct pd_thread
*p2
= (struct pd_thread
*) p2v
;
570 return p1
->pthid
< p2
->pthid
? -1 : p1
->pthid
> p2
->pthid
;
573 /* iterate_over_threads() callback for counting GDB threads. */
576 giter_count (struct thread_info
*thread
, void *countp
)
582 /* iterate_over_threads() callback for accumulating GDB thread pids. */
585 giter_accum (struct thread_info
*thread
, void *bufp
)
587 **(struct thread_info
***) bufp
= thread
;
588 (*(struct thread_info
***) bufp
)++;
592 /* ptid comparison function */
595 ptid_cmp (ptid_t ptid1
, ptid_t ptid2
)
599 if (ptid_get_pid (ptid1
) < ptid_get_pid (ptid2
))
601 else if (ptid_get_pid (ptid1
) > ptid_get_pid (ptid2
))
603 else if (ptid_get_tid (ptid1
) < ptid_get_tid (ptid2
))
605 else if (ptid_get_tid (ptid1
) > ptid_get_tid (ptid2
))
607 else if (ptid_get_lwp (ptid1
) < ptid_get_lwp (ptid2
))
609 else if (ptid_get_lwp (ptid1
) > ptid_get_lwp (ptid2
))
615 /* qsort() comparison function for sorting thread_info structs by pid. */
618 gcmp (const void *t1v
, const void *t2v
)
620 struct thread_info
*t1
= *(struct thread_info
**) t1v
;
621 struct thread_info
*t2
= *(struct thread_info
**) t2v
;
622 return ptid_cmp (t1
->ptid
, t2
->ptid
);
625 /* Search through the list of all kernel threads for the thread
626 that has stopped on a SIGTRAP signal, and return its TID.
627 Return 0 if none found. */
630 get_signaled_thread (void)
632 struct thrdsinfo64 thrinf
;
633 pthdb_tid_t ktid
= 0;
636 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
637 extern int getthrds (pid_t
, struct thrdsinfo64
*,
638 int, pthdb_tid_t
*, int);
642 if (getthrds (PIDGET (inferior_ptid
), &thrinf
,
643 sizeof (thrinf
), &ktid
, 1) != 1)
646 if (thrinf
.ti_cursig
== SIGTRAP
)
647 return thrinf
.ti_tid
;
650 /* Didn't find any thread stopped on a SIGTRAP signal. */
654 /* Synchronize GDB's thread list with libpthdebug's.
656 There are some benefits of doing this every time the inferior stops:
658 - allows users to run thread-specific commands without needing to
659 run "info threads" first
661 - helps pthdb_tid_pthread() work properly (see "libpthdebug
662 peculiarities" at the top of this module)
664 - simplifies the demands placed on libpthdebug, which seems to
665 have difficulty with certain call patterns */
668 sync_threadlists (void)
670 int cmd
, status
, infpid
;
671 int pcount
, psize
, pi
, gcount
, gi
;
672 struct pd_thread
*pbuf
;
673 struct thread_info
**gbuf
, **g
, *thread
;
674 pthdb_pthread_t pdtid
;
678 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
682 pbuf
= (struct pd_thread
*) xmalloc (psize
* sizeof *pbuf
);
684 for (cmd
= PTHDB_LIST_FIRST
;; cmd
= PTHDB_LIST_NEXT
)
686 status
= pthdb_pthread (pd_session
, &pdtid
, cmd
);
687 if (status
!= PTHDB_SUCCESS
|| pdtid
== PTHDB_INVALID_PTHREAD
)
690 status
= pthdb_pthread_ptid (pd_session
, pdtid
, &pthid
);
691 if (status
!= PTHDB_SUCCESS
|| pthid
== PTHDB_INVALID_PTID
)
697 pbuf
= (struct pd_thread
*) xrealloc (pbuf
,
698 psize
* sizeof *pbuf
);
700 pbuf
[pcount
].pdtid
= pdtid
;
701 pbuf
[pcount
].pthid
= pthid
;
705 for (pi
= 0; pi
< pcount
; pi
++)
707 status
= pthdb_pthread_tid (pd_session
, pbuf
[pi
].pdtid
, &tid
);
708 if (status
!= PTHDB_SUCCESS
)
709 tid
= PTHDB_INVALID_TID
;
713 qsort (pbuf
, pcount
, sizeof *pbuf
, pcmp
);
715 /* Accumulate an array of GDB threads sorted by pid. */
718 iterate_over_threads (giter_count
, &gcount
);
719 g
= gbuf
= (struct thread_info
**) xmalloc (gcount
* sizeof *gbuf
);
720 iterate_over_threads (giter_accum
, &g
);
721 qsort (gbuf
, gcount
, sizeof *gbuf
, gcmp
);
723 /* Apply differences between the two arrays to GDB's thread list. */
725 infpid
= PIDGET (inferior_ptid
);
726 for (pi
= gi
= 0; pi
< pcount
|| gi
< gcount
;)
730 delete_thread (gbuf
[gi
]->ptid
);
733 else if (gi
== gcount
)
735 thread
= add_thread (BUILD_THREAD (pbuf
[pi
].pthid
, infpid
));
736 thread
->private = xmalloc (sizeof (struct private_thread_info
));
737 thread
->private->pdtid
= pbuf
[pi
].pdtid
;
738 thread
->private->tid
= pbuf
[pi
].tid
;
746 pptid
= BUILD_THREAD (pbuf
[pi
].pthid
, infpid
);
747 gptid
= gbuf
[gi
]->ptid
;
748 pdtid
= pbuf
[pi
].pdtid
;
751 cmp_result
= ptid_cmp (pptid
, gptid
);
755 gbuf
[gi
]->private->pdtid
= pdtid
;
756 gbuf
[gi
]->private->tid
= tid
;
760 else if (cmp_result
> 0)
762 delete_thread (gptid
);
767 thread
= add_thread (pptid
);
768 thread
->private = xmalloc (sizeof (struct private_thread_info
));
769 thread
->private->pdtid
= pdtid
;
770 thread
->private->tid
= tid
;
780 /* Iterate_over_threads() callback for locating a thread, using
781 the TID of its associated kernel thread. */
784 iter_tid (struct thread_info
*thread
, void *tidp
)
786 const pthdb_tid_t tid
= *(pthdb_tid_t
*)tidp
;
788 return (thread
->private->tid
== tid
);
791 /* Synchronize libpthdebug's state with the inferior and with GDB,
792 generate a composite process/thread <pid> for the current thread,
793 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
796 pd_update (int set_infpid
)
801 struct thread_info
*thread
= NULL
;
804 return inferior_ptid
;
806 status
= pthdb_session_update (pd_session
);
807 if (status
!= PTHDB_SUCCESS
)
808 return inferior_ptid
;
812 /* Define "current thread" as one that just received a trap signal. */
814 tid
= get_signaled_thread ();
816 thread
= iterate_over_threads (iter_tid
, &tid
);
818 ptid
= inferior_ptid
;
823 inferior_ptid
= ptid
;
828 /* Try to start debugging threads in the current process.
829 If successful and SET_INFPID, set inferior_ptid to reflect the
833 pd_activate (int set_infpid
)
837 status
= pthdb_session_init (PD_USER
, arch64
? PEM_64BIT
: PEM_32BIT
,
838 PTHDB_FLAG_REGS
, &pd_callbacks
,
840 if (status
!= PTHDB_SUCCESS
)
842 return inferior_ptid
;
845 return pd_update (set_infpid
);
848 /* Undo the effects of pd_activate(). */
855 pthdb_session_destroy (pd_session
);
857 pid_to_prc (&inferior_ptid
);
861 /* An object file has just been loaded. Check whether the current
862 application is pthreaded, and if so, prepare for thread debugging. */
869 struct minimal_symbol
*ms
;
871 /* Don't initialize twice. */
875 /* Check application word size. */
876 arch64
= register_size (current_gdbarch
, 0) == 8;
878 /* Check whether the application is pthreaded. */
880 status
= pthdb_session_pthreaded (PD_USER
, PTHDB_FLAG_REGS
,
881 &pd_callbacks
, &stub_name
);
882 if ((status
!= PTHDB_SUCCESS
&&
883 status
!= PTHDB_NOT_PTHREADED
) || !stub_name
)
886 /* Set a breakpoint on the returned stub function. */
887 if (!(ms
= lookup_minimal_symbol (stub_name
, NULL
, NULL
)))
889 pd_brk_addr
= SYMBOL_VALUE_ADDRESS (ms
);
890 if (!create_thread_event_breakpoint (pd_brk_addr
))
893 /* Prepare for thread debugging. */
894 push_target (&aix_thread_ops
);
897 /* If we're debugging a core file or an attached inferior, the
898 pthread library may already have been initialized, so try to
899 activate thread debugging. */
903 /* Undo the effects of pd_enable(). */
913 unpush_target (&aix_thread_ops
);
916 /* new_objfile observer callback.
918 If OBJFILE is non-null, check whether a threaded application is
919 being debugged, and if so, prepare for thread debugging.
921 If OBJFILE is null, stop debugging threads. */
924 new_objfile (struct objfile
*objfile
)
932 /* Attach to process specified by ARGS. */
935 aix_thread_attach (struct target_ops
*ops
, char *args
, int from_tty
)
937 struct target_ops
*beneath
= find_target_beneath (ops
);
939 beneath
->to_attach (beneath
, args
, from_tty
);
943 /* Detach from the process attached to by aix_thread_attach(). */
946 aix_thread_detach (struct target_ops
*ops
, char *args
, int from_tty
)
948 struct target_ops
*beneath
= find_target_beneath (ops
);
951 beneath
->to_detach (beneath
, args
, from_tty
);
954 /* Tell the inferior process to continue running thread PID if != -1
955 and all threads otherwise. */
958 aix_thread_resume (struct target_ops
*ops
,
959 ptid_t ptid
, int step
, enum target_signal sig
)
961 struct thread_info
*thread
;
966 struct cleanup
*cleanup
= save_inferior_ptid ();
967 struct target_ops
*beneath
= find_target_beneath (ops
);
969 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
970 beneath
->to_resume (beneath
, ptid
, step
, sig
);
971 do_cleanups (cleanup
);
975 thread
= find_thread_pid (ptid
);
977 error (_("aix-thread resume: unknown pthread %ld"),
980 tid
[0] = thread
->private->tid
;
981 if (tid
[0] == PTHDB_INVALID_TID
)
982 error (_("aix-thread resume: no tid for pthread %ld"),
987 ptrace64aix (PTT_CONTINUE
, tid
[0], 1,
988 target_signal_to_host (sig
), (void *) tid
);
990 ptrace32 (PTT_CONTINUE
, tid
[0], (int *) 1,
991 target_signal_to_host (sig
), (void *) tid
);
995 /* Wait for thread/process ID if != -1 or for any thread otherwise.
996 If an error occurs, return -1, else return the pid of the stopped
1000 aix_thread_wait (struct target_ops
*ops
,
1001 ptid_t ptid
, struct target_waitstatus
*status
)
1003 struct cleanup
*cleanup
= save_inferior_ptid ();
1004 struct target_ops
*beneath
= find_target_beneath (ops
);
1008 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1009 ptid
= beneath
->to_wait (beneath
, ptid
, status
);
1010 do_cleanups (cleanup
);
1012 if (PIDGET (ptid
) == -1)
1013 return pid_to_ptid (-1);
1015 /* Check whether libpthdebug might be ready to be initialized. */
1016 if (!pd_active
&& status
->kind
== TARGET_WAITKIND_STOPPED
1017 && status
->value
.sig
== TARGET_SIGNAL_TRAP
)
1019 struct regcache
*regcache
= get_thread_regcache (ptid
);
1020 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1022 if (regcache_read_pc (regcache
)
1023 - gdbarch_decr_pc_after_break (gdbarch
) == pd_brk_addr
)
1024 return pd_activate (0);
1027 return pd_update (0);
1030 /* Record that the 64-bit general-purpose registers contain VALS. */
1033 supply_gprs64 (struct regcache
*regcache
, uint64_t *vals
)
1035 struct gdbarch_tdep
*tdep
= gdbarch_tdep (get_regcache_arch (regcache
));
1038 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1039 regcache_raw_supply (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1040 (char *) (vals
+ regno
));
1043 /* Record that 32-bit register REGNO contains VAL. */
1046 supply_reg32 (struct regcache
*regcache
, int regno
, uint32_t val
)
1048 regcache_raw_supply (regcache
, regno
, (char *) &val
);
1051 /* Record that the floating-point registers contain VALS. */
1054 supply_fprs (struct regcache
*regcache
, double *vals
)
1056 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1057 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1060 /* This function should never be called on architectures without
1061 floating-point registers. */
1062 gdb_assert (ppc_floating_point_unit_p (gdbarch
));
1064 for (regno
= 0; regno
< ppc_num_fprs
; regno
++)
1065 regcache_raw_supply (regcache
, regno
+ tdep
->ppc_fp0_regnum
,
1066 (char *) (vals
+ regno
));
1069 /* Predicate to test whether given register number is a "special" register. */
1071 special_register_p (struct gdbarch
*gdbarch
, int regno
)
1073 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1075 return regno
== gdbarch_pc_regnum (gdbarch
)
1076 || regno
== tdep
->ppc_ps_regnum
1077 || regno
== tdep
->ppc_cr_regnum
1078 || regno
== tdep
->ppc_lr_regnum
1079 || regno
== tdep
->ppc_ctr_regnum
1080 || regno
== tdep
->ppc_xer_regnum
1081 || (tdep
->ppc_fpscr_regnum
>= 0 && regno
== tdep
->ppc_fpscr_regnum
)
1082 || (tdep
->ppc_mq_regnum
>= 0 && regno
== tdep
->ppc_mq_regnum
);
1086 /* Record that the special registers contain the specified 64-bit and
1090 supply_sprs64 (struct regcache
*regcache
,
1091 uint64_t iar
, uint64_t msr
, uint32_t cr
,
1092 uint64_t lr
, uint64_t ctr
, uint32_t xer
,
1095 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1096 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1098 regcache_raw_supply (regcache
, gdbarch_pc_regnum (gdbarch
),
1100 regcache_raw_supply (regcache
, tdep
->ppc_ps_regnum
, (char *) &msr
);
1101 regcache_raw_supply (regcache
, tdep
->ppc_cr_regnum
, (char *) &cr
);
1102 regcache_raw_supply (regcache
, tdep
->ppc_lr_regnum
, (char *) &lr
);
1103 regcache_raw_supply (regcache
, tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1104 regcache_raw_supply (regcache
, tdep
->ppc_xer_regnum
, (char *) &xer
);
1105 if (tdep
->ppc_fpscr_regnum
>= 0)
1106 regcache_raw_supply (regcache
, tdep
->ppc_fpscr_regnum
,
1110 /* Record that the special registers contain the specified 32-bit
1114 supply_sprs32 (struct regcache
*regcache
,
1115 uint32_t iar
, uint32_t msr
, uint32_t cr
,
1116 uint32_t lr
, uint32_t ctr
, uint32_t xer
,
1119 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1120 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1122 regcache_raw_supply (regcache
, gdbarch_pc_regnum (gdbarch
),
1124 regcache_raw_supply (regcache
, tdep
->ppc_ps_regnum
, (char *) &msr
);
1125 regcache_raw_supply (regcache
, tdep
->ppc_cr_regnum
, (char *) &cr
);
1126 regcache_raw_supply (regcache
, tdep
->ppc_lr_regnum
, (char *) &lr
);
1127 regcache_raw_supply (regcache
, tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1128 regcache_raw_supply (regcache
, tdep
->ppc_xer_regnum
, (char *) &xer
);
1129 if (tdep
->ppc_fpscr_regnum
>= 0)
1130 regcache_raw_supply (regcache
, tdep
->ppc_fpscr_regnum
,
1134 /* Fetch all registers from pthread PDTID, which doesn't have a kernel
1137 There's no way to query a single register from a non-kernel
1138 pthread, so there's no need for a single-register version of this
1142 fetch_regs_user_thread (struct regcache
*regcache
, pthdb_pthread_t pdtid
)
1144 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1145 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1147 pthdb_context_t ctx
;
1149 if (debug_aix_thread
)
1150 fprintf_unfiltered (gdb_stdlog
,
1151 "fetch_regs_user_thread %lx\n", (long) pdtid
);
1152 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1153 if (status
!= PTHDB_SUCCESS
)
1154 error (_("aix-thread: fetch_registers: pthdb_pthread_context returned %s"),
1155 pd_status2str (status
));
1157 /* General-purpose registers. */
1160 supply_gprs64 (regcache
, ctx
.gpr
);
1162 for (i
= 0; i
< ppc_num_gprs
; i
++)
1163 supply_reg32 (regcache
, tdep
->ppc_gp0_regnum
+ i
, ctx
.gpr
[i
]);
1165 /* Floating-point registers. */
1167 if (ppc_floating_point_unit_p (gdbarch
))
1168 supply_fprs (regcache
, ctx
.fpr
);
1170 /* Special registers. */
1173 supply_sprs64 (regcache
, ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
,
1174 ctx
.xer
, ctx
.fpscr
);
1176 supply_sprs32 (regcache
, ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
,
1177 ctx
.xer
, ctx
.fpscr
);
1180 /* Fetch register REGNO if != -1 or all registers otherwise from
1183 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1184 SPRs, but there's no way to query individual registers within those
1185 groups. Therefore, if REGNO != -1, this function fetches an entire
1188 Unfortunately, kernel thread register queries often fail with
1189 EPERM, indicating that the thread is in kernel space. This breaks
1190 backtraces of threads other than the current one. To make that
1191 breakage obvious without throwing an error to top level (which is
1192 bad e.g. during "info threads" output), zero registers that can't
1196 fetch_regs_kernel_thread (struct regcache
*regcache
, int regno
,
1199 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1200 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1201 uint64_t gprs64
[ppc_num_gprs
];
1202 uint32_t gprs32
[ppc_num_gprs
];
1203 double fprs
[ppc_num_fprs
];
1204 struct ptxsprs sprs64
;
1205 struct ptsprs sprs32
;
1208 if (debug_aix_thread
)
1209 fprintf_unfiltered (gdb_stdlog
,
1210 "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
1211 (long) tid
, regno
, arch64
);
1213 /* General-purpose registers. */
1215 || (tdep
->ppc_gp0_regnum
<= regno
1216 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_gprs
))
1220 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
1221 (unsigned long) gprs64
, 0, NULL
))
1222 memset (gprs64
, 0, sizeof (gprs64
));
1223 supply_gprs64 (regcache
, gprs64
);
1227 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
1228 memset (gprs32
, 0, sizeof (gprs32
));
1229 for (i
= 0; i
< ppc_num_gprs
; i
++)
1230 supply_reg32 (regcache
, tdep
->ppc_gp0_regnum
+ i
, gprs32
[i
]);
1234 /* Floating-point registers. */
1236 if (ppc_floating_point_unit_p (gdbarch
)
1238 || (regno
>= tdep
->ppc_fp0_regnum
1239 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1241 if (!ptrace32 (PTT_READ_FPRS
, tid
, (void *) fprs
, 0, NULL
))
1242 memset (fprs
, 0, sizeof (fprs
));
1243 supply_fprs (regcache
, fprs
);
1246 /* Special-purpose registers. */
1248 if (regno
== -1 || special_register_p (gdbarch
, regno
))
1252 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
1253 (unsigned long) &sprs64
, 0, NULL
))
1254 memset (&sprs64
, 0, sizeof (sprs64
));
1255 supply_sprs64 (regcache
, sprs64
.pt_iar
, sprs64
.pt_msr
,
1256 sprs64
.pt_cr
, sprs64
.pt_lr
, sprs64
.pt_ctr
,
1257 sprs64
.pt_xer
, sprs64
.pt_fpscr
);
1261 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1263 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
1264 memset (&sprs32
, 0, sizeof (sprs32
));
1265 supply_sprs32 (regcache
, sprs32
.pt_iar
, sprs32
.pt_msr
, sprs32
.pt_cr
,
1266 sprs32
.pt_lr
, sprs32
.pt_ctr
, sprs32
.pt_xer
,
1269 if (tdep
->ppc_mq_regnum
>= 0)
1270 regcache_raw_supply (regcache
, tdep
->ppc_mq_regnum
,
1271 (char *) &sprs32
.pt_mq
);
1276 /* Fetch register REGNO if != -1 or all registers otherwise in the
1277 thread/process specified by inferior_ptid. */
1280 aix_thread_fetch_registers (struct target_ops
*ops
,
1281 struct regcache
*regcache
, int regno
)
1283 struct thread_info
*thread
;
1285 struct target_ops
*beneath
= find_target_beneath (ops
);
1287 if (!PD_TID (inferior_ptid
))
1288 beneath
->to_fetch_registers (beneath
, regcache
, regno
);
1291 thread
= find_thread_pid (inferior_ptid
);
1292 tid
= thread
->private->tid
;
1294 if (tid
== PTHDB_INVALID_TID
)
1295 fetch_regs_user_thread (regcache
, thread
->private->pdtid
);
1297 fetch_regs_kernel_thread (regcache
, regno
, tid
);
1301 /* Store the gp registers into an array of uint32_t or uint64_t. */
1304 fill_gprs64 (const struct regcache
*regcache
, uint64_t *vals
)
1306 struct gdbarch_tdep
*tdep
= gdbarch_tdep (get_regcache_arch (regcache
));
1309 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1310 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ regno
))
1311 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1316 fill_gprs32 (const struct regcache
*regcache
, uint32_t *vals
)
1318 struct gdbarch_tdep
*tdep
= gdbarch_tdep (get_regcache_arch (regcache
));
1321 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1322 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ regno
))
1323 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1327 /* Store the floating point registers into a double array. */
1329 fill_fprs (const struct regcache
*regcache
, double *vals
)
1331 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1332 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1335 /* This function should never be called on architectures without
1336 floating-point registers. */
1337 gdb_assert (ppc_floating_point_unit_p (gdbarch
));
1339 for (regno
= tdep
->ppc_fp0_regnum
;
1340 regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
;
1342 if (regcache_valid_p (regcache
, regno
))
1343 regcache_raw_collect (regcache
, regno
, vals
+ regno
);
1346 /* Store the special registers into the specified 64-bit and 32-bit
1350 fill_sprs64 (const struct regcache
*regcache
,
1351 uint64_t *iar
, uint64_t *msr
, uint32_t *cr
,
1352 uint64_t *lr
, uint64_t *ctr
, uint32_t *xer
,
1355 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1356 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1358 /* Verify that the size of the size of the IAR buffer is the
1359 same as the raw size of the PC (in the register cache). If
1360 they're not, then either GDB has been built incorrectly, or
1361 there's some other kind of internal error. To be really safe,
1362 we should check all of the sizes. */
1363 gdb_assert (sizeof (*iar
) == register_size
1364 (gdbarch
, gdbarch_pc_regnum (gdbarch
)));
1366 if (regcache_valid_p (regcache
, gdbarch_pc_regnum (gdbarch
)))
1367 regcache_raw_collect (regcache
, gdbarch_pc_regnum (gdbarch
), iar
);
1368 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1369 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1370 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1371 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1372 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1373 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1374 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1375 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1376 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1377 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1378 if (tdep
->ppc_fpscr_regnum
>= 0
1379 && regcache_valid_p (regcache
, tdep
->ppc_fpscr_regnum
))
1380 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1384 fill_sprs32 (const struct regcache
*regcache
,
1385 uint32_t *iar
, uint32_t *msr
, uint32_t *cr
,
1386 uint32_t *lr
, uint32_t *ctr
, uint32_t *xer
,
1389 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1390 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1392 /* Verify that the size of the size of the IAR buffer is the
1393 same as the raw size of the PC (in the register cache). If
1394 they're not, then either GDB has been built incorrectly, or
1395 there's some other kind of internal error. To be really safe,
1396 we should check all of the sizes. */
1397 gdb_assert (sizeof (*iar
) == register_size (gdbarch
,
1398 gdbarch_pc_regnum (gdbarch
)));
1400 if (regcache_valid_p (regcache
, gdbarch_pc_regnum (gdbarch
)))
1401 regcache_raw_collect (regcache
, gdbarch_pc_regnum (gdbarch
), iar
);
1402 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1403 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1404 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1405 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1406 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1407 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1408 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1409 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1410 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1411 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1412 if (tdep
->ppc_fpscr_regnum
>= 0
1413 && regcache_valid_p (regcache
, tdep
->ppc_fpscr_regnum
))
1414 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1417 /* Store all registers into pthread PDTID, which doesn't have a kernel
1420 It's possible to store a single register into a non-kernel pthread,
1421 but I doubt it's worth the effort. */
1424 store_regs_user_thread (const struct regcache
*regcache
, pthdb_pthread_t pdtid
)
1426 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1427 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1429 pthdb_context_t ctx
;
1434 if (debug_aix_thread
)
1435 fprintf_unfiltered (gdb_stdlog
,
1436 "store_regs_user_thread %lx\n", (long) pdtid
);
1438 /* Retrieve the thread's current context for its non-register
1440 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1441 if (status
!= PTHDB_SUCCESS
)
1442 error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"),
1443 pd_status2str (status
));
1445 /* Collect general-purpose register values from the regcache. */
1447 for (i
= 0; i
< ppc_num_gprs
; i
++)
1448 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ i
))
1452 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1458 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1464 /* Collect floating-point register values from the regcache. */
1465 if (ppc_floating_point_unit_p (gdbarch
))
1466 fill_fprs (regcache
, ctx
.fpr
);
1468 /* Special registers (always kept in ctx as 64 bits). */
1471 fill_sprs64 (regcache
, &ctx
.iar
, &ctx
.msr
, &ctx
.cr
, &ctx
.lr
, &ctx
.ctr
,
1472 &ctx
.xer
, &ctx
.fpscr
);
1476 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1477 Solution: use 32-bit temp variables. */
1478 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1481 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
, &tmp_ctr
,
1482 &tmp_xer
, &tmp_fpscr
);
1483 if (regcache_valid_p (regcache
, gdbarch_pc_regnum (gdbarch
)))
1485 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1487 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1489 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1491 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1493 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1495 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1496 ctx
.fpscr
= tmp_fpscr
;
1499 status
= pthdb_pthread_setcontext (pd_session
, pdtid
, &ctx
);
1500 if (status
!= PTHDB_SUCCESS
)
1501 error (_("aix-thread: store_registers: pthdb_pthread_setcontext returned %s"),
1502 pd_status2str (status
));
1505 /* Store register REGNO if != -1 or all registers otherwise into
1508 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1509 SPRs, but there's no way to set individual registers within those
1510 groups. Therefore, if REGNO != -1, this function stores an entire
1514 store_regs_kernel_thread (const struct regcache
*regcache
, int regno
,
1517 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1518 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1519 uint64_t gprs64
[ppc_num_gprs
];
1520 uint32_t gprs32
[ppc_num_gprs
];
1521 double fprs
[ppc_num_fprs
];
1522 struct ptxsprs sprs64
;
1523 struct ptsprs sprs32
;
1526 if (debug_aix_thread
)
1527 fprintf_unfiltered (gdb_stdlog
,
1528 "store_regs_kernel_thread tid=%lx regno=%d\n",
1531 /* General-purpose registers. */
1533 || (tdep
->ppc_gp0_regnum
<= regno
1534 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_fprs
))
1538 /* Pre-fetch: some regs may not be in the cache. */
1539 ptrace64aix (PTT_READ_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1540 fill_gprs64 (regcache
, gprs64
);
1541 ptrace64aix (PTT_WRITE_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1545 /* Pre-fetch: some regs may not be in the cache. */
1546 ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
);
1547 fill_gprs32 (regcache
, gprs32
);
1548 ptrace32 (PTT_WRITE_GPRS
, tid
, gprs32
, 0, NULL
);
1552 /* Floating-point registers. */
1554 if (ppc_floating_point_unit_p (gdbarch
)
1556 || (regno
>= tdep
->ppc_fp0_regnum
1557 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1559 /* Pre-fetch: some regs may not be in the cache. */
1560 ptrace32 (PTT_READ_FPRS
, tid
, (void *) fprs
, 0, NULL
);
1561 fill_fprs (regcache
, fprs
);
1562 ptrace32 (PTT_WRITE_FPRS
, tid
, (void *) fprs
, 0, NULL
);
1565 /* Special-purpose registers. */
1567 if (regno
== -1 || special_register_p (gdbarch
, regno
))
1571 /* Pre-fetch: some registers won't be in the cache. */
1572 ptrace64aix (PTT_READ_SPRS
, tid
,
1573 (unsigned long) &sprs64
, 0, NULL
);
1574 fill_sprs64 (regcache
, &sprs64
.pt_iar
, &sprs64
.pt_msr
,
1575 &sprs64
.pt_cr
, &sprs64
.pt_lr
, &sprs64
.pt_ctr
,
1576 &sprs64
.pt_xer
, &sprs64
.pt_fpscr
);
1577 ptrace64aix (PTT_WRITE_SPRS
, tid
,
1578 (unsigned long) &sprs64
, 0, NULL
);
1582 /* The contents of "struct ptspr" were declared as "unsigned
1583 long" up to AIX 5.2, but are "unsigned int" since 5.3.
1584 Use temporaries to work around this problem. Also, add an
1585 assert here to make sure we fail if the system header files
1586 use "unsigned long", and the size of that type is not what
1587 the headers expect. */
1588 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1591 gdb_assert (sizeof (sprs32
.pt_iar
) == 4);
1593 /* Pre-fetch: some registers won't be in the cache. */
1594 ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1596 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
,
1597 &tmp_ctr
, &tmp_xer
, &tmp_fpscr
);
1599 sprs32
.pt_iar
= tmp_iar
;
1600 sprs32
.pt_msr
= tmp_msr
;
1601 sprs32
.pt_cr
= tmp_cr
;
1602 sprs32
.pt_lr
= tmp_lr
;
1603 sprs32
.pt_ctr
= tmp_ctr
;
1604 sprs32
.pt_xer
= tmp_xer
;
1605 sprs32
.pt_fpscr
= tmp_fpscr
;
1607 if (tdep
->ppc_mq_regnum
>= 0)
1608 if (regcache_valid_p (regcache
, tdep
->ppc_mq_regnum
))
1609 regcache_raw_collect (regcache
, tdep
->ppc_mq_regnum
,
1612 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1617 /* Store gdb's current view of the register set into the
1618 thread/process specified by inferior_ptid. */
1621 aix_thread_store_registers (struct target_ops
*ops
,
1622 struct regcache
*regcache
, int regno
)
1624 struct thread_info
*thread
;
1626 struct target_ops
*beneath
= find_target_beneath (ops
);
1628 if (!PD_TID (inferior_ptid
))
1629 beneath
->to_store_registers (beneath
, regcache
, regno
);
1632 thread
= find_thread_pid (inferior_ptid
);
1633 tid
= thread
->private->tid
;
1635 if (tid
== PTHDB_INVALID_TID
)
1636 store_regs_user_thread (regcache
, thread
->private->pdtid
);
1638 store_regs_kernel_thread (regcache
, regno
, tid
);
1642 /* Attempt a transfer all LEN bytes starting at OFFSET between the
1643 inferior's OBJECT:ANNEX space and GDB's READBUF/WRITEBUF buffer.
1644 Return the number of bytes actually transferred. */
1647 aix_thread_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1648 const char *annex
, gdb_byte
*readbuf
,
1649 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1651 struct cleanup
*old_chain
= save_inferior_ptid ();
1653 struct target_ops
*beneath
= find_target_beneath (ops
);
1655 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1656 xfer
= beneath
->to_xfer_partial (beneath
, object
, annex
,
1657 readbuf
, writebuf
, offset
, len
);
1659 do_cleanups (old_chain
);
1663 /* Clean up after the inferior exits. */
1666 aix_thread_mourn_inferior (struct target_ops
*ops
)
1668 struct target_ops
*beneath
= find_target_beneath (ops
);
1671 beneath
->to_mourn_inferior (beneath
);
1674 /* Return whether thread PID is still valid. */
1677 aix_thread_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1679 struct target_ops
*beneath
= find_target_beneath (¤t_target
);
1682 return beneath
->to_thread_alive (beneath
, ptid
);
1684 /* We update the thread list every time the child stops, so all
1685 valid threads should be in the thread list. */
1686 return in_thread_list (ptid
);
1689 /* Return a printable representation of composite PID for use in
1690 "info threads" output. */
1693 aix_thread_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
1695 static char *ret
= NULL
;
1696 struct target_ops
*beneath
= find_target_beneath (¤t_target
);
1699 return beneath
->to_pid_to_str (beneath
, ptid
);
1701 /* Free previous return value; a new one will be allocated by
1705 ret
= xstrprintf (_("Thread %ld"), ptid_get_tid (ptid
));
1709 /* Return a printable representation of extra information about
1710 THREAD, for use in "info threads" output. */
1713 aix_thread_extra_thread_info (struct thread_info
*thread
)
1715 struct ui_file
*buf
;
1717 pthdb_pthread_t pdtid
;
1719 pthdb_state_t state
;
1720 pthdb_suspendstate_t suspendstate
;
1721 pthdb_detachstate_t detachstate
;
1724 static char *ret
= NULL
;
1726 if (!PD_TID (thread
->ptid
))
1729 buf
= mem_fileopen ();
1731 pdtid
= thread
->private->pdtid
;
1732 tid
= thread
->private->tid
;
1734 if (tid
!= PTHDB_INVALID_TID
)
1735 /* i18n: Like "thread-identifier %d, [state] running, suspended" */
1736 fprintf_unfiltered (buf
, _("tid %d"), (int)tid
);
1738 status
= pthdb_pthread_state (pd_session
, pdtid
, &state
);
1739 if (status
!= PTHDB_SUCCESS
)
1741 fprintf_unfiltered (buf
, ", %s", state2str (state
));
1743 status
= pthdb_pthread_suspendstate (pd_session
, pdtid
,
1745 if (status
== PTHDB_SUCCESS
&& suspendstate
== PSS_SUSPENDED
)
1746 /* i18n: Like "Thread-Id %d, [state] running, suspended" */
1747 fprintf_unfiltered (buf
, _(", suspended"));
1749 status
= pthdb_pthread_detachstate (pd_session
, pdtid
,
1751 if (status
== PTHDB_SUCCESS
&& detachstate
== PDS_DETACHED
)
1752 /* i18n: Like "Thread-Id %d, [state] running, detached" */
1753 fprintf_unfiltered (buf
, _(", detached"));
1755 pthdb_pthread_cancelpend (pd_session
, pdtid
, &cancelpend
);
1756 if (status
== PTHDB_SUCCESS
&& cancelpend
)
1757 /* i18n: Like "Thread-Id %d, [state] running, cancel pending" */
1758 fprintf_unfiltered (buf
, _(", cancel pending"));
1760 ui_file_write (buf
, "", 1);
1762 xfree (ret
); /* Free old buffer. */
1764 ret
= ui_file_xstrdup (buf
, &length
);
1765 ui_file_delete (buf
);
1771 aix_thread_get_ada_task_ptid (long lwp
, long thread
)
1773 return ptid_build (ptid_get_pid (inferior_ptid
), 0, thread
);
1776 /* Initialize target aix_thread_ops. */
1779 init_aix_thread_ops (void)
1781 aix_thread_ops
.to_shortname
= "aix-threads";
1782 aix_thread_ops
.to_longname
= _("AIX pthread support");
1783 aix_thread_ops
.to_doc
= _("AIX pthread support");
1785 aix_thread_ops
.to_attach
= aix_thread_attach
;
1786 aix_thread_ops
.to_detach
= aix_thread_detach
;
1787 aix_thread_ops
.to_resume
= aix_thread_resume
;
1788 aix_thread_ops
.to_wait
= aix_thread_wait
;
1789 aix_thread_ops
.to_fetch_registers
= aix_thread_fetch_registers
;
1790 aix_thread_ops
.to_store_registers
= aix_thread_store_registers
;
1791 aix_thread_ops
.to_xfer_partial
= aix_thread_xfer_partial
;
1792 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1793 debugging when the inferior reaches pd_brk_addr. */
1794 aix_thread_ops
.to_mourn_inferior
= aix_thread_mourn_inferior
;
1795 aix_thread_ops
.to_thread_alive
= aix_thread_thread_alive
;
1796 aix_thread_ops
.to_pid_to_str
= aix_thread_pid_to_str
;
1797 aix_thread_ops
.to_extra_thread_info
= aix_thread_extra_thread_info
;
1798 aix_thread_ops
.to_get_ada_task_ptid
= aix_thread_get_ada_task_ptid
;
1799 aix_thread_ops
.to_stratum
= thread_stratum
;
1800 aix_thread_ops
.to_magic
= OPS_MAGIC
;
1803 /* Module startup initialization function, automagically called by
1807 _initialize_aix_thread (void)
1809 init_aix_thread_ops ();
1810 add_target (&aix_thread_ops
);
1812 /* Notice when object files get loaded and unloaded. */
1813 observer_attach_new_objfile (new_objfile
);
1815 add_setshow_boolean_cmd ("aix-thread", class_maintenance
, &debug_aix_thread
,
1816 _("Set debugging of AIX thread module."),
1817 _("Show debugging of AIX thread module."),
1818 _("Enables debugging output (used to debug GDB)."),
1819 NULL
, NULL
, /* FIXME: i18n: Debugging of AIX thread module is \"%d\". */
1820 &setdebuglist
, &showdebuglist
);