1 /* Low level interface for debugging AIX 4.3+ pthreads.
3 Copyright (C) 1999-2014 Free Software Foundation, Inc.
4 Written by Nick Duffek <nsd@redhat.com>.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* This module uses the libpthdebug.a library provided by AIX 4.3+ for
23 debugging pthread applications.
25 Some name prefix conventions:
26 pthdb_ provided by libpthdebug.a
27 pdc_ callbacks that this module provides to libpthdebug.a
28 pd_ variables or functions interfacing with libpthdebug.a
30 libpthdebug peculiarities:
32 - pthdb_ptid_pthread() is prototyped in <sys/pthdebug.h>, but
33 it's not documented, and after several calls it stops working
34 and causes other libpthdebug functions to fail.
36 - pthdb_tid_pthread() doesn't always work after
37 pthdb_session_update(), but it does work after cycling through
38 all threads using pthdb_pthread().
43 #include "gdb_assert.h"
44 #include "gdbthread.h"
54 #include <sys/types.h>
55 #include <sys/ptrace.h>
58 #include <sys/pthdebug.h>
60 #if !HAVE_DECL_GETTHRDS
61 extern int getthrds (pid_t
, struct thrdsinfo64
*, int, tid_t
*, int);
64 /* Whether to emit debugging output. */
65 static int debug_aix_thread
;
67 /* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */
68 #ifndef PTHDB_VERSION_3
69 #define pthdb_tid_t tid_t
72 /* Return whether to treat PID as a debuggable thread id. */
74 #define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0)
76 /* pthdb_user_t value that we pass to pthdb functions. 0 causes
77 PTHDB_BAD_USER errors, so use 1. */
81 /* Success and failure values returned by pthdb callbacks. */
83 #define PDC_SUCCESS PTHDB_SUCCESS
84 #define PDC_FAILURE PTHDB_CALLBACK
86 /* Private data attached to each element in GDB's thread list. */
88 struct private_thread_info
{
89 pthdb_pthread_t pdtid
; /* thread's libpthdebug id */
90 pthdb_tid_t tid
; /* kernel thread id */
93 /* Information about a thread of which libpthdebug is aware. */
96 pthdb_pthread_t pdtid
;
101 /* This module's target-specific operations, active while pd_able is true. */
103 static struct target_ops aix_thread_ops
;
105 /* Address of the function that libpthread will call when libpthdebug
106 is ready to be initialized. */
108 static CORE_ADDR pd_brk_addr
;
110 /* Whether the current application is debuggable by pthdb. */
112 static int pd_able
= 0;
114 /* Whether a threaded application is being debugged. */
116 static int pd_active
= 0;
118 /* Whether the current architecture is 64-bit.
119 Only valid when pd_able is true. */
123 /* Forward declarations for pthdb callbacks. */
125 static int pdc_symbol_addrs (pthdb_user_t
, pthdb_symbol_t
*, int);
126 static int pdc_read_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
127 static int pdc_write_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
128 static int pdc_read_regs (pthdb_user_t user
, pthdb_tid_t tid
,
129 unsigned long long flags
,
130 pthdb_context_t
*context
);
131 static int pdc_write_regs (pthdb_user_t user
, pthdb_tid_t tid
,
132 unsigned long long flags
,
133 pthdb_context_t
*context
);
134 static int pdc_alloc (pthdb_user_t
, size_t, void **);
135 static int pdc_realloc (pthdb_user_t
, void *, size_t, void **);
136 static int pdc_dealloc (pthdb_user_t
, void *);
138 /* pthdb callbacks. */
140 static pthdb_callbacks_t pd_callbacks
= {
152 /* Current pthdb session. */
154 static pthdb_session_t pd_session
;
156 /* Return a printable representation of pthdebug function return
160 pd_status2str (int status
)
164 case PTHDB_SUCCESS
: return "SUCCESS";
165 case PTHDB_NOSYS
: return "NOSYS";
166 case PTHDB_NOTSUP
: return "NOTSUP";
167 case PTHDB_BAD_VERSION
: return "BAD_VERSION";
168 case PTHDB_BAD_USER
: return "BAD_USER";
169 case PTHDB_BAD_SESSION
: return "BAD_SESSION";
170 case PTHDB_BAD_MODE
: return "BAD_MODE";
171 case PTHDB_BAD_FLAGS
: return "BAD_FLAGS";
172 case PTHDB_BAD_CALLBACK
: return "BAD_CALLBACK";
173 case PTHDB_BAD_POINTER
: return "BAD_POINTER";
174 case PTHDB_BAD_CMD
: return "BAD_CMD";
175 case PTHDB_BAD_PTHREAD
: return "BAD_PTHREAD";
176 case PTHDB_BAD_ATTR
: return "BAD_ATTR";
177 case PTHDB_BAD_MUTEX
: return "BAD_MUTEX";
178 case PTHDB_BAD_MUTEXATTR
: return "BAD_MUTEXATTR";
179 case PTHDB_BAD_COND
: return "BAD_COND";
180 case PTHDB_BAD_CONDATTR
: return "BAD_CONDATTR";
181 case PTHDB_BAD_RWLOCK
: return "BAD_RWLOCK";
182 case PTHDB_BAD_RWLOCKATTR
: return "BAD_RWLOCKATTR";
183 case PTHDB_BAD_KEY
: return "BAD_KEY";
184 case PTHDB_BAD_PTID
: return "BAD_PTID";
185 case PTHDB_BAD_TID
: return "BAD_TID";
186 case PTHDB_CALLBACK
: return "CALLBACK";
187 case PTHDB_CONTEXT
: return "CONTEXT";
188 case PTHDB_HELD
: return "HELD";
189 case PTHDB_NOT_HELD
: return "NOT_HELD";
190 case PTHDB_MEMORY
: return "MEMORY";
191 case PTHDB_NOT_PTHREADED
: return "NOT_PTHREADED";
192 case PTHDB_SYMBOL
: return "SYMBOL";
193 case PTHDB_NOT_AVAIL
: return "NOT_AVAIL";
194 case PTHDB_INTERNAL
: return "INTERNAL";
195 default: return "UNKNOWN";
199 /* A call to ptrace(REQ, ID, ...) just returned RET. Check for
200 exceptional conditions and either return nonlocally or else return
201 1 for success and 0 for failure. */
204 ptrace_check (int req
, int id
, int ret
)
206 if (ret
== 0 && !errno
)
209 /* According to ptrace(2), ptrace may fail with EPERM if "the
210 Identifier parameter corresponds to a kernel thread which is
211 stopped in kernel mode and whose computational state cannot be
212 read or written." This happens quite often with register reads. */
219 if (ret
== -1 && errno
== EPERM
)
221 if (debug_aix_thread
)
222 fprintf_unfiltered (gdb_stdlog
,
223 "ptrace (%d, %d) = %d (errno = %d)\n",
224 req
, id
, ret
, errno
);
225 return ret
== -1 ? 0 : 1;
229 error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"),
230 req
, id
, ret
, errno
, safe_strerror (errno
));
231 return 0; /* Not reached. */
234 /* Call ptracex (REQ, ID, ADDR, DATA, BUF) or
235 ptrace64 (REQ, ID, ADDR, DATA, BUF) if HAVE_PTRACE64.
239 # define ptracex(request, pid, addr, data, buf) \
240 ptrace64 (request, pid, addr, data, buf)
244 ptrace64aix (int req
, int id
, long long addr
, int data
, int *buf
)
247 return ptrace_check (req
, id
, ptracex (req
, id
, addr
, data
, buf
));
250 /* Call ptrace (REQ, ID, ADDR, DATA, BUF) or
251 ptrace64 (REQ, ID, ADDR, DATA, BUF) if HAVE_PTRACE64.
255 # define ptrace(request, pid, addr, data, buf) \
256 ptrace64 (request, pid, addr, data, buf)
257 # define addr_ptr long long
259 # define addr_ptr int *
263 ptrace32 (int req
, int id
, addr_ptr addr
, int data
, int *buf
)
266 return ptrace_check (req
, id
,
267 ptrace (req
, id
, addr
, data
, buf
));
270 /* If *PIDP is a composite process/thread id, convert it to a
274 pid_to_prc (ptid_t
*ptidp
)
280 *ptidp
= pid_to_ptid (ptid_get_pid (ptid
));
283 /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
284 the address of SYMBOLS[<i>].name. */
287 pdc_symbol_addrs (pthdb_user_t user
, pthdb_symbol_t
*symbols
, int count
)
289 struct bound_minimal_symbol ms
;
293 if (debug_aix_thread
)
294 fprintf_unfiltered (gdb_stdlog
,
295 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
296 user
, (long) symbols
, count
);
298 for (i
= 0; i
< count
; i
++)
300 name
= symbols
[i
].name
;
301 if (debug_aix_thread
)
302 fprintf_unfiltered (gdb_stdlog
,
303 " symbols[%d].name = \"%s\"\n", i
, name
);
309 ms
= lookup_minimal_symbol (name
, NULL
, NULL
);
310 if (ms
.minsym
== NULL
)
312 if (debug_aix_thread
)
313 fprintf_unfiltered (gdb_stdlog
, " returning PDC_FAILURE\n");
316 symbols
[i
].addr
= MSYMBOL_VALUE_ADDRESS (ms
.minsym
);
318 if (debug_aix_thread
)
319 fprintf_unfiltered (gdb_stdlog
, " symbols[%d].addr = %s\n",
320 i
, hex_string (symbols
[i
].addr
));
322 if (debug_aix_thread
)
323 fprintf_unfiltered (gdb_stdlog
, " returning PDC_SUCCESS\n");
327 /* Read registers call back function should be able to read the
328 context information of a debuggee kernel thread from an active
329 process or from a core file. The information should be formatted
330 in context64 form for both 32-bit and 64-bit process.
331 If successful return 0, else non-zero is returned. */
334 pdc_read_regs (pthdb_user_t user
,
336 unsigned long long flags
,
337 pthdb_context_t
*context
)
339 /* This function doesn't appear to be used, so we could probably
340 just return 0 here. HOWEVER, if it is not defined, the OS will
341 complain and several thread debug functions will fail. In case
342 this is needed, I have implemented what I think it should do,
343 however this code is untested. */
345 uint64_t gprs64
[ppc_num_gprs
];
346 uint32_t gprs32
[ppc_num_gprs
];
347 double fprs
[ppc_num_fprs
];
348 struct ptxsprs sprs64
;
349 struct ptsprs sprs32
;
351 if (debug_aix_thread
)
352 fprintf_unfiltered (gdb_stdlog
, "pdc_read_regs tid=%d flags=%s\n",
353 (int) tid
, hex_string (flags
));
355 /* General-purpose registers. */
356 if (flags
& PTHDB_FLAG_GPRS
)
360 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
361 (unsigned long) gprs64
, 0, NULL
))
362 memset (gprs64
, 0, sizeof (gprs64
));
363 memcpy (context
->gpr
, gprs64
, sizeof(gprs64
));
367 if (!ptrace32 (PTT_READ_GPRS
, tid
, (uintptr_t) gprs32
, 0, NULL
))
368 memset (gprs32
, 0, sizeof (gprs32
));
369 memcpy (context
->gpr
, gprs32
, sizeof(gprs32
));
373 /* Floating-point registers. */
374 if (flags
& PTHDB_FLAG_FPRS
)
376 if (!ptrace32 (PTT_READ_FPRS
, tid
, (uintptr_t) fprs
, 0, NULL
))
377 memset (fprs
, 0, sizeof (fprs
));
378 memcpy (context
->fpr
, fprs
, sizeof(fprs
));
381 /* Special-purpose registers. */
382 if (flags
& PTHDB_FLAG_SPRS
)
386 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
387 (unsigned long) &sprs64
, 0, NULL
))
388 memset (&sprs64
, 0, sizeof (sprs64
));
389 memcpy (&context
->msr
, &sprs64
, sizeof(sprs64
));
393 if (!ptrace32 (PTT_READ_SPRS
, tid
, (uintptr_t) &sprs32
, 0, NULL
))
394 memset (&sprs32
, 0, sizeof (sprs32
));
395 memcpy (&context
->msr
, &sprs32
, sizeof(sprs32
));
401 /* Write register function should be able to write requested context
402 information to specified debuggee's kernel thread id.
403 If successful return 0, else non-zero is returned. */
406 pdc_write_regs (pthdb_user_t user
,
408 unsigned long long flags
,
409 pthdb_context_t
*context
)
411 /* This function doesn't appear to be used, so we could probably
412 just return 0 here. HOWEVER, if it is not defined, the OS will
413 complain and several thread debug functions will fail. In case
414 this is needed, I have implemented what I think it should do,
415 however this code is untested. */
417 if (debug_aix_thread
)
418 fprintf_unfiltered (gdb_stdlog
, "pdc_write_regs tid=%d flags=%s\n",
419 (int) tid
, hex_string (flags
));
421 /* General-purpose registers. */
422 if (flags
& PTHDB_FLAG_GPRS
)
425 ptrace64aix (PTT_WRITE_GPRS
, tid
,
426 (unsigned long) context
->gpr
, 0, NULL
);
428 ptrace32 (PTT_WRITE_GPRS
, tid
, (uintptr_t) context
->gpr
, 0, NULL
);
431 /* Floating-point registers. */
432 if (flags
& PTHDB_FLAG_FPRS
)
434 ptrace32 (PTT_WRITE_FPRS
, tid
, (uintptr_t) context
->fpr
, 0, NULL
);
437 /* Special-purpose registers. */
438 if (flags
& PTHDB_FLAG_SPRS
)
442 ptrace64aix (PTT_WRITE_SPRS
, tid
,
443 (unsigned long) &context
->msr
, 0, NULL
);
447 ptrace32 (PTT_WRITE_SPRS
, tid
, (uintptr_t) &context
->msr
, 0, NULL
);
453 /* pthdb callback: read LEN bytes from process ADDR into BUF. */
456 pdc_read_data (pthdb_user_t user
, void *buf
,
457 pthdb_addr_t addr
, size_t len
)
461 if (debug_aix_thread
)
462 fprintf_unfiltered (gdb_stdlog
,
463 "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
464 user
, (long) buf
, hex_string (addr
), len
);
466 status
= target_read_memory (addr
, buf
, len
);
467 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
469 if (debug_aix_thread
)
470 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n",
471 status
, pd_status2str (ret
));
475 /* pthdb callback: write LEN bytes from BUF to process ADDR. */
478 pdc_write_data (pthdb_user_t user
, void *buf
,
479 pthdb_addr_t addr
, size_t len
)
483 if (debug_aix_thread
)
484 fprintf_unfiltered (gdb_stdlog
,
485 "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
486 user
, (long) buf
, hex_string (addr
), len
);
488 status
= target_write_memory (addr
, buf
, len
);
489 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
491 if (debug_aix_thread
)
492 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n", status
,
493 pd_status2str (ret
));
497 /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
501 pdc_alloc (pthdb_user_t user
, size_t len
, void **bufp
)
503 if (debug_aix_thread
)
504 fprintf_unfiltered (gdb_stdlog
,
505 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
506 user
, len
, (long) bufp
);
507 *bufp
= xmalloc (len
);
508 if (debug_aix_thread
)
509 fprintf_unfiltered (gdb_stdlog
,
510 " malloc returned 0x%lx\n", (long) *bufp
);
512 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
515 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
518 /* pthdb callback: reallocate BUF, which was allocated by the alloc or
519 realloc callback, so that it contains LEN bytes, and store a
520 pointer to the result in BUFP. */
523 pdc_realloc (pthdb_user_t user
, void *buf
, size_t len
, void **bufp
)
525 if (debug_aix_thread
)
526 fprintf_unfiltered (gdb_stdlog
,
527 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
528 user
, (long) buf
, len
, (long) bufp
);
529 *bufp
= xrealloc (buf
, len
);
530 if (debug_aix_thread
)
531 fprintf_unfiltered (gdb_stdlog
,
532 " realloc returned 0x%lx\n", (long) *bufp
);
533 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
536 /* pthdb callback: free BUF, which was allocated by the alloc or
540 pdc_dealloc (pthdb_user_t user
, void *buf
)
542 if (debug_aix_thread
)
543 fprintf_unfiltered (gdb_stdlog
,
544 "pdc_free (user = %ld, buf = 0x%lx)\n", user
,
550 /* Return a printable representation of pthread STATE. */
553 state2str (pthdb_state_t state
)
558 /* i18n: Like "Thread-Id %d, [state] idle" */
559 return _("idle"); /* being created */
561 /* i18n: Like "Thread-Id %d, [state] running" */
562 return _("running"); /* running */
564 /* i18n: Like "Thread-Id %d, [state] sleeping" */
565 return _("sleeping"); /* awaiting an event */
567 /* i18n: Like "Thread-Id %d, [state] ready" */
568 return _("ready"); /* runnable */
570 /* i18n: Like "Thread-Id %d, [state] finished" */
571 return _("finished"); /* awaiting a join/detach */
573 /* i18n: Like "Thread-Id %d, [state] unknown" */
578 /* qsort() comparison function for sorting pd_thread structs by pthid. */
581 pcmp (const void *p1v
, const void *p2v
)
583 struct pd_thread
*p1
= (struct pd_thread
*) p1v
;
584 struct pd_thread
*p2
= (struct pd_thread
*) p2v
;
585 return p1
->pthid
< p2
->pthid
? -1 : p1
->pthid
> p2
->pthid
;
588 /* iterate_over_threads() callback for counting GDB threads.
590 Do not count the main thread (whose tid is zero). This matches
591 the list of threads provided by the pthreaddebug library, which
592 does not include that main thread either, and thus allows us
593 to compare the two lists. */
596 giter_count (struct thread_info
*thread
, void *countp
)
598 if (PD_TID (thread
->ptid
))
603 /* iterate_over_threads() callback for accumulating GDB thread pids.
605 Do not include the main thread (whose tid is zero). This matches
606 the list of threads provided by the pthreaddebug library, which
607 does not include that main thread either, and thus allows us
608 to compare the two lists. */
611 giter_accum (struct thread_info
*thread
, void *bufp
)
613 if (PD_TID (thread
->ptid
))
615 **(struct thread_info
***) bufp
= thread
;
616 (*(struct thread_info
***) bufp
)++;
621 /* ptid comparison function */
624 ptid_cmp (ptid_t ptid1
, ptid_t ptid2
)
628 if (ptid_get_pid (ptid1
) < ptid_get_pid (ptid2
))
630 else if (ptid_get_pid (ptid1
) > ptid_get_pid (ptid2
))
632 else if (ptid_get_tid (ptid1
) < ptid_get_tid (ptid2
))
634 else if (ptid_get_tid (ptid1
) > ptid_get_tid (ptid2
))
636 else if (ptid_get_lwp (ptid1
) < ptid_get_lwp (ptid2
))
638 else if (ptid_get_lwp (ptid1
) > ptid_get_lwp (ptid2
))
644 /* qsort() comparison function for sorting thread_info structs by pid. */
647 gcmp (const void *t1v
, const void *t2v
)
649 struct thread_info
*t1
= *(struct thread_info
**) t1v
;
650 struct thread_info
*t2
= *(struct thread_info
**) t2v
;
651 return ptid_cmp (t1
->ptid
, t2
->ptid
);
654 /* Search through the list of all kernel threads for the thread
655 that has stopped on a SIGTRAP signal, and return its TID.
656 Return 0 if none found. */
659 get_signaled_thread (void)
661 struct thrdsinfo64 thrinf
;
667 if (getthrds (ptid_get_pid (inferior_ptid
), &thrinf
,
668 sizeof (thrinf
), &ktid
, 1) != 1)
671 if (thrinf
.ti_cursig
== SIGTRAP
)
672 return thrinf
.ti_tid
;
675 /* Didn't find any thread stopped on a SIGTRAP signal. */
679 /* Synchronize GDB's thread list with libpthdebug's.
681 There are some benefits of doing this every time the inferior stops:
683 - allows users to run thread-specific commands without needing to
684 run "info threads" first
686 - helps pthdb_tid_pthread() work properly (see "libpthdebug
687 peculiarities" at the top of this module)
689 - simplifies the demands placed on libpthdebug, which seems to
690 have difficulty with certain call patterns */
693 sync_threadlists (void)
695 int cmd
, status
, infpid
;
696 int pcount
, psize
, pi
, gcount
, gi
;
697 struct pd_thread
*pbuf
;
698 struct thread_info
**gbuf
, **g
, *thread
;
699 pthdb_pthread_t pdtid
;
703 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
707 pbuf
= (struct pd_thread
*) xmalloc (psize
* sizeof *pbuf
);
709 for (cmd
= PTHDB_LIST_FIRST
;; cmd
= PTHDB_LIST_NEXT
)
711 status
= pthdb_pthread (pd_session
, &pdtid
, cmd
);
712 if (status
!= PTHDB_SUCCESS
|| pdtid
== PTHDB_INVALID_PTHREAD
)
715 status
= pthdb_pthread_ptid (pd_session
, pdtid
, &pthid
);
716 if (status
!= PTHDB_SUCCESS
|| pthid
== PTHDB_INVALID_PTID
)
722 pbuf
= (struct pd_thread
*) xrealloc (pbuf
,
723 psize
* sizeof *pbuf
);
725 pbuf
[pcount
].pdtid
= pdtid
;
726 pbuf
[pcount
].pthid
= pthid
;
730 for (pi
= 0; pi
< pcount
; pi
++)
732 status
= pthdb_pthread_tid (pd_session
, pbuf
[pi
].pdtid
, &tid
);
733 if (status
!= PTHDB_SUCCESS
)
734 tid
= PTHDB_INVALID_TID
;
738 qsort (pbuf
, pcount
, sizeof *pbuf
, pcmp
);
740 /* Accumulate an array of GDB threads sorted by pid. */
743 iterate_over_threads (giter_count
, &gcount
);
744 g
= gbuf
= (struct thread_info
**) xmalloc (gcount
* sizeof *gbuf
);
745 iterate_over_threads (giter_accum
, &g
);
746 qsort (gbuf
, gcount
, sizeof *gbuf
, gcmp
);
748 /* Apply differences between the two arrays to GDB's thread list. */
750 infpid
= ptid_get_pid (inferior_ptid
);
751 for (pi
= gi
= 0; pi
< pcount
|| gi
< gcount
;)
755 delete_thread (gbuf
[gi
]->ptid
);
758 else if (gi
== gcount
)
760 thread
= add_thread (ptid_build (infpid
, 0, pbuf
[pi
].pthid
));
761 thread
->private = xmalloc (sizeof (struct private_thread_info
));
762 thread
->private->pdtid
= pbuf
[pi
].pdtid
;
763 thread
->private->tid
= pbuf
[pi
].tid
;
771 pptid
= ptid_build (infpid
, 0, pbuf
[pi
].pthid
);
772 gptid
= gbuf
[gi
]->ptid
;
773 pdtid
= pbuf
[pi
].pdtid
;
776 cmp_result
= ptid_cmp (pptid
, gptid
);
780 gbuf
[gi
]->private->pdtid
= pdtid
;
781 gbuf
[gi
]->private->tid
= tid
;
785 else if (cmp_result
> 0)
787 delete_thread (gptid
);
792 thread
= add_thread (pptid
);
793 thread
->private = xmalloc (sizeof (struct private_thread_info
));
794 thread
->private->pdtid
= pdtid
;
795 thread
->private->tid
= tid
;
805 /* Iterate_over_threads() callback for locating a thread, using
806 the TID of its associated kernel thread. */
809 iter_tid (struct thread_info
*thread
, void *tidp
)
811 const pthdb_tid_t tid
= *(pthdb_tid_t
*)tidp
;
813 return (thread
->private->tid
== tid
);
816 /* Synchronize libpthdebug's state with the inferior and with GDB,
817 generate a composite process/thread <pid> for the current thread,
818 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
821 pd_update (int set_infpid
)
826 struct thread_info
*thread
= NULL
;
829 return inferior_ptid
;
831 status
= pthdb_session_update (pd_session
);
832 if (status
!= PTHDB_SUCCESS
)
833 return inferior_ptid
;
837 /* Define "current thread" as one that just received a trap signal. */
839 tid
= get_signaled_thread ();
841 thread
= iterate_over_threads (iter_tid
, &tid
);
843 ptid
= inferior_ptid
;
848 inferior_ptid
= ptid
;
853 /* Try to start debugging threads in the current process.
854 If successful and SET_INFPID, set inferior_ptid to reflect the
858 pd_activate (int set_infpid
)
862 status
= pthdb_session_init (PD_USER
, arch64
? PEM_64BIT
: PEM_32BIT
,
863 PTHDB_FLAG_REGS
, &pd_callbacks
,
865 if (status
!= PTHDB_SUCCESS
)
867 return inferior_ptid
;
870 return pd_update (set_infpid
);
873 /* Undo the effects of pd_activate(). */
880 pthdb_session_destroy (pd_session
);
882 pid_to_prc (&inferior_ptid
);
886 /* An object file has just been loaded. Check whether the current
887 application is pthreaded, and if so, prepare for thread debugging. */
894 struct bound_minimal_symbol ms
;
896 /* Don't initialize twice. */
900 /* Check application word size. */
901 arch64
= register_size (target_gdbarch (), 0) == 8;
903 /* Check whether the application is pthreaded. */
905 status
= pthdb_session_pthreaded (PD_USER
, PTHDB_FLAG_REGS
,
906 &pd_callbacks
, &stub_name
);
907 if ((status
!= PTHDB_SUCCESS
908 && status
!= PTHDB_NOT_PTHREADED
) || !stub_name
)
911 /* Set a breakpoint on the returned stub function. */
912 ms
= lookup_minimal_symbol (stub_name
, NULL
, NULL
);
913 if (ms
.minsym
== NULL
)
915 pd_brk_addr
= MSYMBOL_VALUE_ADDRESS (ms
.minsym
);
916 if (!create_thread_event_breakpoint (target_gdbarch (), pd_brk_addr
))
919 /* Prepare for thread debugging. */
920 push_target (&aix_thread_ops
);
923 /* If we're debugging a core file or an attached inferior, the
924 pthread library may already have been initialized, so try to
925 activate thread debugging. */
929 /* Undo the effects of pd_enable(). */
939 unpush_target (&aix_thread_ops
);
942 /* new_objfile observer callback.
944 If OBJFILE is non-null, check whether a threaded application is
945 being debugged, and if so, prepare for thread debugging.
947 If OBJFILE is null, stop debugging threads. */
950 new_objfile (struct objfile
*objfile
)
958 /* Attach to process specified by ARGS. */
961 aix_thread_attach (struct target_ops
*ops
, char *args
, int from_tty
)
963 struct target_ops
*beneath
= find_target_beneath (ops
);
965 beneath
->to_attach (beneath
, args
, from_tty
);
969 /* Detach from the process attached to by aix_thread_attach(). */
972 aix_thread_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
974 struct target_ops
*beneath
= find_target_beneath (ops
);
977 beneath
->to_detach (beneath
, args
, from_tty
);
980 /* Tell the inferior process to continue running thread PID if != -1
981 and all threads otherwise. */
984 aix_thread_resume (struct target_ops
*ops
,
985 ptid_t ptid
, int step
, enum gdb_signal sig
)
987 struct thread_info
*thread
;
992 struct cleanup
*cleanup
= save_inferior_ptid ();
993 struct target_ops
*beneath
= find_target_beneath (ops
);
995 inferior_ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
996 beneath
->to_resume (beneath
, ptid
, step
, sig
);
997 do_cleanups (cleanup
);
1001 thread
= find_thread_ptid (ptid
);
1003 error (_("aix-thread resume: unknown pthread %ld"),
1004 ptid_get_lwp (ptid
));
1006 tid
[0] = thread
->private->tid
;
1007 if (tid
[0] == PTHDB_INVALID_TID
)
1008 error (_("aix-thread resume: no tid for pthread %ld"),
1009 ptid_get_lwp (ptid
));
1013 ptrace64aix (PTT_CONTINUE
, tid
[0], (long long) 1,
1014 gdb_signal_to_host (sig
), (void *) tid
);
1016 ptrace32 (PTT_CONTINUE
, tid
[0], (addr_ptr
) 1,
1017 gdb_signal_to_host (sig
), (void *) tid
);
1021 /* Wait for thread/process ID if != -1 or for any thread otherwise.
1022 If an error occurs, return -1, else return the pid of the stopped
1026 aix_thread_wait (struct target_ops
*ops
,
1027 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
1029 struct cleanup
*cleanup
= save_inferior_ptid ();
1030 struct target_ops
*beneath
= find_target_beneath (ops
);
1034 inferior_ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
1035 ptid
= beneath
->to_wait (beneath
, ptid
, status
, options
);
1036 do_cleanups (cleanup
);
1038 if (ptid_get_pid (ptid
) == -1)
1039 return pid_to_ptid (-1);
1041 /* Check whether libpthdebug might be ready to be initialized. */
1042 if (!pd_active
&& status
->kind
== TARGET_WAITKIND_STOPPED
1043 && status
->value
.sig
== GDB_SIGNAL_TRAP
)
1045 struct regcache
*regcache
= get_thread_regcache (ptid
);
1046 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1048 if (regcache_read_pc (regcache
)
1049 - target_decr_pc_after_break (gdbarch
) == pd_brk_addr
)
1050 return pd_activate (0);
1053 return pd_update (0);
1056 /* Record that the 64-bit general-purpose registers contain VALS. */
1059 supply_gprs64 (struct regcache
*regcache
, uint64_t *vals
)
1061 struct gdbarch_tdep
*tdep
= gdbarch_tdep (get_regcache_arch (regcache
));
1064 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1065 regcache_raw_supply (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1066 (char *) (vals
+ regno
));
1069 /* Record that 32-bit register REGNO contains VAL. */
1072 supply_reg32 (struct regcache
*regcache
, int regno
, uint32_t val
)
1074 regcache_raw_supply (regcache
, regno
, (char *) &val
);
1077 /* Record that the floating-point registers contain VALS. */
1080 supply_fprs (struct regcache
*regcache
, double *vals
)
1082 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1083 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1086 /* This function should never be called on architectures without
1087 floating-point registers. */
1088 gdb_assert (ppc_floating_point_unit_p (gdbarch
));
1090 for (regno
= tdep
->ppc_fp0_regnum
;
1091 regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
;
1093 regcache_raw_supply (regcache
, regno
,
1094 (char *) (vals
+ regno
- tdep
->ppc_fp0_regnum
));
1097 /* Predicate to test whether given register number is a "special" register. */
1099 special_register_p (struct gdbarch
*gdbarch
, int regno
)
1101 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1103 return regno
== gdbarch_pc_regnum (gdbarch
)
1104 || regno
== tdep
->ppc_ps_regnum
1105 || regno
== tdep
->ppc_cr_regnum
1106 || regno
== tdep
->ppc_lr_regnum
1107 || regno
== tdep
->ppc_ctr_regnum
1108 || regno
== tdep
->ppc_xer_regnum
1109 || (tdep
->ppc_fpscr_regnum
>= 0 && regno
== tdep
->ppc_fpscr_regnum
)
1110 || (tdep
->ppc_mq_regnum
>= 0 && regno
== tdep
->ppc_mq_regnum
);
1114 /* Record that the special registers contain the specified 64-bit and
1118 supply_sprs64 (struct regcache
*regcache
,
1119 uint64_t iar
, uint64_t msr
, uint32_t cr
,
1120 uint64_t lr
, uint64_t ctr
, uint32_t xer
,
1123 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1124 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1126 regcache_raw_supply (regcache
, gdbarch_pc_regnum (gdbarch
),
1128 regcache_raw_supply (regcache
, tdep
->ppc_ps_regnum
, (char *) &msr
);
1129 regcache_raw_supply (regcache
, tdep
->ppc_cr_regnum
, (char *) &cr
);
1130 regcache_raw_supply (regcache
, tdep
->ppc_lr_regnum
, (char *) &lr
);
1131 regcache_raw_supply (regcache
, tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1132 regcache_raw_supply (regcache
, tdep
->ppc_xer_regnum
, (char *) &xer
);
1133 if (tdep
->ppc_fpscr_regnum
>= 0)
1134 regcache_raw_supply (regcache
, tdep
->ppc_fpscr_regnum
,
1138 /* Record that the special registers contain the specified 32-bit
1142 supply_sprs32 (struct regcache
*regcache
,
1143 uint32_t iar
, uint32_t msr
, uint32_t cr
,
1144 uint32_t lr
, uint32_t ctr
, uint32_t xer
,
1147 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1148 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1150 regcache_raw_supply (regcache
, gdbarch_pc_regnum (gdbarch
),
1152 regcache_raw_supply (regcache
, tdep
->ppc_ps_regnum
, (char *) &msr
);
1153 regcache_raw_supply (regcache
, tdep
->ppc_cr_regnum
, (char *) &cr
);
1154 regcache_raw_supply (regcache
, tdep
->ppc_lr_regnum
, (char *) &lr
);
1155 regcache_raw_supply (regcache
, tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1156 regcache_raw_supply (regcache
, tdep
->ppc_xer_regnum
, (char *) &xer
);
1157 if (tdep
->ppc_fpscr_regnum
>= 0)
1158 regcache_raw_supply (regcache
, tdep
->ppc_fpscr_regnum
,
1162 /* Fetch all registers from pthread PDTID, which doesn't have a kernel
1165 There's no way to query a single register from a non-kernel
1166 pthread, so there's no need for a single-register version of this
1170 fetch_regs_user_thread (struct regcache
*regcache
, pthdb_pthread_t pdtid
)
1172 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1173 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1175 pthdb_context_t ctx
;
1177 if (debug_aix_thread
)
1178 fprintf_unfiltered (gdb_stdlog
,
1179 "fetch_regs_user_thread %lx\n", (long) pdtid
);
1180 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1181 if (status
!= PTHDB_SUCCESS
)
1182 error (_("aix-thread: fetch_registers: pthdb_pthread_context returned %s"),
1183 pd_status2str (status
));
1185 /* General-purpose registers. */
1188 supply_gprs64 (regcache
, ctx
.gpr
);
1190 for (i
= 0; i
< ppc_num_gprs
; i
++)
1191 supply_reg32 (regcache
, tdep
->ppc_gp0_regnum
+ i
, ctx
.gpr
[i
]);
1193 /* Floating-point registers. */
1195 if (ppc_floating_point_unit_p (gdbarch
))
1196 supply_fprs (regcache
, ctx
.fpr
);
1198 /* Special registers. */
1201 supply_sprs64 (regcache
, ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
,
1202 ctx
.xer
, ctx
.fpscr
);
1204 supply_sprs32 (regcache
, ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
,
1205 ctx
.xer
, ctx
.fpscr
);
1208 /* Fetch register REGNO if != -1 or all registers otherwise from
1211 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1212 SPRs, but there's no way to query individual registers within those
1213 groups. Therefore, if REGNO != -1, this function fetches an entire
1216 Unfortunately, kernel thread register queries often fail with
1217 EPERM, indicating that the thread is in kernel space. This breaks
1218 backtraces of threads other than the current one. To make that
1219 breakage obvious without throwing an error to top level (which is
1220 bad e.g. during "info threads" output), zero registers that can't
1224 fetch_regs_kernel_thread (struct regcache
*regcache
, int regno
,
1227 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1228 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1229 uint64_t gprs64
[ppc_num_gprs
];
1230 uint32_t gprs32
[ppc_num_gprs
];
1231 double fprs
[ppc_num_fprs
];
1232 struct ptxsprs sprs64
;
1233 struct ptsprs sprs32
;
1236 if (debug_aix_thread
)
1237 fprintf_unfiltered (gdb_stdlog
,
1238 "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
1239 (long) tid
, regno
, arch64
);
1241 /* General-purpose registers. */
1243 || (tdep
->ppc_gp0_regnum
<= regno
1244 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_gprs
))
1248 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
1249 (unsigned long) gprs64
, 0, NULL
))
1250 memset (gprs64
, 0, sizeof (gprs64
));
1251 supply_gprs64 (regcache
, gprs64
);
1255 if (!ptrace32 (PTT_READ_GPRS
, tid
, (uintptr_t) gprs32
, 0, NULL
))
1256 memset (gprs32
, 0, sizeof (gprs32
));
1257 for (i
= 0; i
< ppc_num_gprs
; i
++)
1258 supply_reg32 (regcache
, tdep
->ppc_gp0_regnum
+ i
, gprs32
[i
]);
1262 /* Floating-point registers. */
1264 if (ppc_floating_point_unit_p (gdbarch
)
1266 || (regno
>= tdep
->ppc_fp0_regnum
1267 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1269 if (!ptrace32 (PTT_READ_FPRS
, tid
, (uintptr_t) fprs
, 0, NULL
))
1270 memset (fprs
, 0, sizeof (fprs
));
1271 supply_fprs (regcache
, fprs
);
1274 /* Special-purpose registers. */
1276 if (regno
== -1 || special_register_p (gdbarch
, regno
))
1280 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
1281 (unsigned long) &sprs64
, 0, NULL
))
1282 memset (&sprs64
, 0, sizeof (sprs64
));
1283 supply_sprs64 (regcache
, sprs64
.pt_iar
, sprs64
.pt_msr
,
1284 sprs64
.pt_cr
, sprs64
.pt_lr
, sprs64
.pt_ctr
,
1285 sprs64
.pt_xer
, sprs64
.pt_fpscr
);
1289 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1291 if (!ptrace32 (PTT_READ_SPRS
, tid
, (uintptr_t) &sprs32
, 0, NULL
))
1292 memset (&sprs32
, 0, sizeof (sprs32
));
1293 supply_sprs32 (regcache
, sprs32
.pt_iar
, sprs32
.pt_msr
, sprs32
.pt_cr
,
1294 sprs32
.pt_lr
, sprs32
.pt_ctr
, sprs32
.pt_xer
,
1297 if (tdep
->ppc_mq_regnum
>= 0)
1298 regcache_raw_supply (regcache
, tdep
->ppc_mq_regnum
,
1299 (char *) &sprs32
.pt_mq
);
1304 /* Fetch register REGNO if != -1 or all registers otherwise in the
1305 thread/process specified by inferior_ptid. */
1308 aix_thread_fetch_registers (struct target_ops
*ops
,
1309 struct regcache
*regcache
, int regno
)
1311 struct thread_info
*thread
;
1313 struct target_ops
*beneath
= find_target_beneath (ops
);
1315 if (!PD_TID (inferior_ptid
))
1316 beneath
->to_fetch_registers (beneath
, regcache
, regno
);
1319 thread
= find_thread_ptid (inferior_ptid
);
1320 tid
= thread
->private->tid
;
1322 if (tid
== PTHDB_INVALID_TID
)
1323 fetch_regs_user_thread (regcache
, thread
->private->pdtid
);
1325 fetch_regs_kernel_thread (regcache
, regno
, tid
);
1329 /* Store the gp registers into an array of uint32_t or uint64_t. */
1332 fill_gprs64 (const struct regcache
*regcache
, uint64_t *vals
)
1334 struct gdbarch_tdep
*tdep
= gdbarch_tdep (get_regcache_arch (regcache
));
1337 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1338 if (REG_VALID
== regcache_register_status (regcache
,
1339 tdep
->ppc_gp0_regnum
+ regno
))
1340 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1345 fill_gprs32 (const struct regcache
*regcache
, uint32_t *vals
)
1347 struct gdbarch_tdep
*tdep
= gdbarch_tdep (get_regcache_arch (regcache
));
1350 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1351 if (REG_VALID
== regcache_register_status (regcache
,
1352 tdep
->ppc_gp0_regnum
+ regno
))
1353 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1357 /* Store the floating point registers into a double array. */
1359 fill_fprs (const struct regcache
*regcache
, double *vals
)
1361 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1362 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1365 /* This function should never be called on architectures without
1366 floating-point registers. */
1367 gdb_assert (ppc_floating_point_unit_p (gdbarch
));
1369 for (regno
= tdep
->ppc_fp0_regnum
;
1370 regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
;
1372 if (REG_VALID
== regcache_register_status (regcache
, regno
))
1373 regcache_raw_collect (regcache
, regno
,
1374 vals
+ regno
- tdep
->ppc_fp0_regnum
);
1377 /* Store the special registers into the specified 64-bit and 32-bit
1381 fill_sprs64 (const struct regcache
*regcache
,
1382 uint64_t *iar
, uint64_t *msr
, uint32_t *cr
,
1383 uint64_t *lr
, uint64_t *ctr
, uint32_t *xer
,
1386 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1387 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1389 /* Verify that the size of the size of the IAR buffer is the
1390 same as the raw size of the PC (in the register cache). If
1391 they're not, then either GDB has been built incorrectly, or
1392 there's some other kind of internal error. To be really safe,
1393 we should check all of the sizes. */
1394 gdb_assert (sizeof (*iar
) == register_size
1395 (gdbarch
, gdbarch_pc_regnum (gdbarch
)));
1397 if (REG_VALID
== regcache_register_status (regcache
,
1398 gdbarch_pc_regnum (gdbarch
)))
1399 regcache_raw_collect (regcache
, gdbarch_pc_regnum (gdbarch
), iar
);
1400 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_ps_regnum
))
1401 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1402 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_cr_regnum
))
1403 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1404 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_lr_regnum
))
1405 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1406 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_ctr_regnum
))
1407 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1408 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_xer_regnum
))
1409 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1410 if (tdep
->ppc_fpscr_regnum
>= 0
1411 && REG_VALID
== regcache_register_status (regcache
,
1412 tdep
->ppc_fpscr_regnum
))
1413 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1417 fill_sprs32 (const struct regcache
*regcache
,
1418 uint32_t *iar
, uint32_t *msr
, uint32_t *cr
,
1419 uint32_t *lr
, uint32_t *ctr
, uint32_t *xer
,
1422 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1423 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1425 /* Verify that the size of the size of the IAR buffer is the
1426 same as the raw size of the PC (in the register cache). If
1427 they're not, then either GDB has been built incorrectly, or
1428 there's some other kind of internal error. To be really safe,
1429 we should check all of the sizes. */
1430 gdb_assert (sizeof (*iar
) == register_size (gdbarch
,
1431 gdbarch_pc_regnum (gdbarch
)));
1433 if (REG_VALID
== regcache_register_status (regcache
,
1434 gdbarch_pc_regnum (gdbarch
)))
1435 regcache_raw_collect (regcache
, gdbarch_pc_regnum (gdbarch
), iar
);
1436 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_ps_regnum
))
1437 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1438 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_cr_regnum
))
1439 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1440 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_lr_regnum
))
1441 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1442 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_ctr_regnum
))
1443 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1444 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_xer_regnum
))
1445 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1446 if (tdep
->ppc_fpscr_regnum
>= 0
1447 && REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_fpscr_regnum
))
1448 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1451 /* Store all registers into pthread PDTID, which doesn't have a kernel
1454 It's possible to store a single register into a non-kernel pthread,
1455 but I doubt it's worth the effort. */
1458 store_regs_user_thread (const struct regcache
*regcache
, pthdb_pthread_t pdtid
)
1460 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1461 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1463 pthdb_context_t ctx
;
1468 if (debug_aix_thread
)
1469 fprintf_unfiltered (gdb_stdlog
,
1470 "store_regs_user_thread %lx\n", (long) pdtid
);
1472 /* Retrieve the thread's current context for its non-register
1474 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1475 if (status
!= PTHDB_SUCCESS
)
1476 error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"),
1477 pd_status2str (status
));
1479 /* Collect general-purpose register values from the regcache. */
1481 for (i
= 0; i
< ppc_num_gprs
; i
++)
1482 if (REG_VALID
== regcache_register_status (regcache
,
1483 tdep
->ppc_gp0_regnum
+ i
))
1487 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1493 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1499 /* Collect floating-point register values from the regcache. */
1500 if (ppc_floating_point_unit_p (gdbarch
))
1501 fill_fprs (regcache
, ctx
.fpr
);
1503 /* Special registers (always kept in ctx as 64 bits). */
1506 fill_sprs64 (regcache
, &ctx
.iar
, &ctx
.msr
, &ctx
.cr
, &ctx
.lr
, &ctx
.ctr
,
1507 &ctx
.xer
, &ctx
.fpscr
);
1511 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1512 Solution: use 32-bit temp variables. */
1513 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1516 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
, &tmp_ctr
,
1517 &tmp_xer
, &tmp_fpscr
);
1518 if (REG_VALID
== regcache_register_status (regcache
,
1519 gdbarch_pc_regnum (gdbarch
)))
1521 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_ps_regnum
))
1523 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_cr_regnum
))
1525 if (REG_VALID
== regcache_register_status (regcache
, tdep
->ppc_lr_regnum
))
1527 if (REG_VALID
== regcache_register_status (regcache
,
1528 tdep
->ppc_ctr_regnum
))
1530 if (REG_VALID
== regcache_register_status (regcache
,
1531 tdep
->ppc_xer_regnum
))
1533 if (REG_VALID
== regcache_register_status (regcache
,
1534 tdep
->ppc_xer_regnum
))
1535 ctx
.fpscr
= tmp_fpscr
;
1538 status
= pthdb_pthread_setcontext (pd_session
, pdtid
, &ctx
);
1539 if (status
!= PTHDB_SUCCESS
)
1540 error (_("aix-thread: store_registers: "
1541 "pthdb_pthread_setcontext returned %s"),
1542 pd_status2str (status
));
1545 /* Store register REGNO if != -1 or all registers otherwise into
1548 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1549 SPRs, but there's no way to set individual registers within those
1550 groups. Therefore, if REGNO != -1, this function stores an entire
1554 store_regs_kernel_thread (const struct regcache
*regcache
, int regno
,
1557 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1558 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1559 uint64_t gprs64
[ppc_num_gprs
];
1560 uint32_t gprs32
[ppc_num_gprs
];
1561 double fprs
[ppc_num_fprs
];
1562 struct ptxsprs sprs64
;
1563 struct ptsprs sprs32
;
1566 if (debug_aix_thread
)
1567 fprintf_unfiltered (gdb_stdlog
,
1568 "store_regs_kernel_thread tid=%lx regno=%d\n",
1571 /* General-purpose registers. */
1573 || (tdep
->ppc_gp0_regnum
<= regno
1574 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_fprs
))
1578 /* Pre-fetch: some regs may not be in the cache. */
1579 ptrace64aix (PTT_READ_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1580 fill_gprs64 (regcache
, gprs64
);
1581 ptrace64aix (PTT_WRITE_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1585 /* Pre-fetch: some regs may not be in the cache. */
1586 ptrace32 (PTT_READ_GPRS
, tid
, (uintptr_t) gprs32
, 0, NULL
);
1587 fill_gprs32 (regcache
, gprs32
);
1588 ptrace32 (PTT_WRITE_GPRS
, tid
, (uintptr_t) gprs32
, 0, NULL
);
1592 /* Floating-point registers. */
1594 if (ppc_floating_point_unit_p (gdbarch
)
1596 || (regno
>= tdep
->ppc_fp0_regnum
1597 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1599 /* Pre-fetch: some regs may not be in the cache. */
1600 ptrace32 (PTT_READ_FPRS
, tid
, (uintptr_t) fprs
, 0, NULL
);
1601 fill_fprs (regcache
, fprs
);
1602 ptrace32 (PTT_WRITE_FPRS
, tid
, (uintptr_t) fprs
, 0, NULL
);
1605 /* Special-purpose registers. */
1607 if (regno
== -1 || special_register_p (gdbarch
, regno
))
1611 /* Pre-fetch: some registers won't be in the cache. */
1612 ptrace64aix (PTT_READ_SPRS
, tid
,
1613 (unsigned long) &sprs64
, 0, NULL
);
1614 fill_sprs64 (regcache
, &sprs64
.pt_iar
, &sprs64
.pt_msr
,
1615 &sprs64
.pt_cr
, &sprs64
.pt_lr
, &sprs64
.pt_ctr
,
1616 &sprs64
.pt_xer
, &sprs64
.pt_fpscr
);
1617 ptrace64aix (PTT_WRITE_SPRS
, tid
,
1618 (unsigned long) &sprs64
, 0, NULL
);
1622 /* The contents of "struct ptspr" were declared as "unsigned
1623 long" up to AIX 5.2, but are "unsigned int" since 5.3.
1624 Use temporaries to work around this problem. Also, add an
1625 assert here to make sure we fail if the system header files
1626 use "unsigned long", and the size of that type is not what
1627 the headers expect. */
1628 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1631 gdb_assert (sizeof (sprs32
.pt_iar
) == 4);
1633 /* Pre-fetch: some registers won't be in the cache. */
1634 ptrace32 (PTT_READ_SPRS
, tid
, (uintptr_t) &sprs32
, 0, NULL
);
1636 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
,
1637 &tmp_ctr
, &tmp_xer
, &tmp_fpscr
);
1639 sprs32
.pt_iar
= tmp_iar
;
1640 sprs32
.pt_msr
= tmp_msr
;
1641 sprs32
.pt_cr
= tmp_cr
;
1642 sprs32
.pt_lr
= tmp_lr
;
1643 sprs32
.pt_ctr
= tmp_ctr
;
1644 sprs32
.pt_xer
= tmp_xer
;
1645 sprs32
.pt_fpscr
= tmp_fpscr
;
1647 if (tdep
->ppc_mq_regnum
>= 0)
1648 if (REG_VALID
== regcache_register_status (regcache
,
1649 tdep
->ppc_mq_regnum
))
1650 regcache_raw_collect (regcache
, tdep
->ppc_mq_regnum
,
1653 ptrace32 (PTT_WRITE_SPRS
, tid
, (uintptr_t) &sprs32
, 0, NULL
);
1658 /* Store gdb's current view of the register set into the
1659 thread/process specified by inferior_ptid. */
1662 aix_thread_store_registers (struct target_ops
*ops
,
1663 struct regcache
*regcache
, int regno
)
1665 struct thread_info
*thread
;
1667 struct target_ops
*beneath
= find_target_beneath (ops
);
1669 if (!PD_TID (inferior_ptid
))
1670 beneath
->to_store_registers (beneath
, regcache
, regno
);
1673 thread
= find_thread_ptid (inferior_ptid
);
1674 tid
= thread
->private->tid
;
1676 if (tid
== PTHDB_INVALID_TID
)
1677 store_regs_user_thread (regcache
, thread
->private->pdtid
);
1679 store_regs_kernel_thread (regcache
, regno
, tid
);
1683 /* Implement the to_xfer_partial target_ops method. */
1685 static enum target_xfer_status
1686 aix_thread_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1687 const char *annex
, gdb_byte
*readbuf
,
1688 const gdb_byte
*writebuf
,
1689 ULONGEST offset
, ULONGEST len
, ULONGEST
*xfered_len
)
1691 struct cleanup
*old_chain
= save_inferior_ptid ();
1692 enum target_xfer_status xfer
;
1693 struct target_ops
*beneath
= find_target_beneath (ops
);
1695 inferior_ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
1696 xfer
= beneath
->to_xfer_partial (beneath
, object
, annex
, readbuf
,
1697 writebuf
, offset
, len
, xfered_len
);
1699 do_cleanups (old_chain
);
1703 /* Clean up after the inferior exits. */
1706 aix_thread_mourn_inferior (struct target_ops
*ops
)
1708 struct target_ops
*beneath
= find_target_beneath (ops
);
1711 beneath
->to_mourn_inferior (beneath
);
1714 /* Return whether thread PID is still valid. */
1717 aix_thread_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1719 struct target_ops
*beneath
= find_target_beneath (ops
);
1722 return beneath
->to_thread_alive (beneath
, ptid
);
1724 /* We update the thread list every time the child stops, so all
1725 valid threads should be in the thread list. */
1726 return in_thread_list (ptid
);
1729 /* Return a printable representation of composite PID for use in
1730 "info threads" output. */
1733 aix_thread_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
1735 static char *ret
= NULL
;
1736 struct target_ops
*beneath
= find_target_beneath (ops
);
1739 return beneath
->to_pid_to_str (beneath
, ptid
);
1741 /* Free previous return value; a new one will be allocated by
1745 ret
= xstrprintf (_("Thread %ld"), ptid_get_tid (ptid
));
1749 /* Return a printable representation of extra information about
1750 THREAD, for use in "info threads" output. */
1753 aix_thread_extra_thread_info (struct target_ops
*self
,
1754 struct thread_info
*thread
)
1756 struct ui_file
*buf
;
1758 pthdb_pthread_t pdtid
;
1760 pthdb_state_t state
;
1761 pthdb_suspendstate_t suspendstate
;
1762 pthdb_detachstate_t detachstate
;
1764 static char *ret
= NULL
;
1766 if (!PD_TID (thread
->ptid
))
1769 buf
= mem_fileopen ();
1771 pdtid
= thread
->private->pdtid
;
1772 tid
= thread
->private->tid
;
1774 if (tid
!= PTHDB_INVALID_TID
)
1775 /* i18n: Like "thread-identifier %d, [state] running, suspended" */
1776 fprintf_unfiltered (buf
, _("tid %d"), (int)tid
);
1778 status
= pthdb_pthread_state (pd_session
, pdtid
, &state
);
1779 if (status
!= PTHDB_SUCCESS
)
1781 fprintf_unfiltered (buf
, ", %s", state2str (state
));
1783 status
= pthdb_pthread_suspendstate (pd_session
, pdtid
,
1785 if (status
== PTHDB_SUCCESS
&& suspendstate
== PSS_SUSPENDED
)
1786 /* i18n: Like "Thread-Id %d, [state] running, suspended" */
1787 fprintf_unfiltered (buf
, _(", suspended"));
1789 status
= pthdb_pthread_detachstate (pd_session
, pdtid
,
1791 if (status
== PTHDB_SUCCESS
&& detachstate
== PDS_DETACHED
)
1792 /* i18n: Like "Thread-Id %d, [state] running, detached" */
1793 fprintf_unfiltered (buf
, _(", detached"));
1795 pthdb_pthread_cancelpend (pd_session
, pdtid
, &cancelpend
);
1796 if (status
== PTHDB_SUCCESS
&& cancelpend
)
1797 /* i18n: Like "Thread-Id %d, [state] running, cancel pending" */
1798 fprintf_unfiltered (buf
, _(", cancel pending"));
1800 ui_file_write (buf
, "", 1);
1802 xfree (ret
); /* Free old buffer. */
1804 ret
= ui_file_xstrdup (buf
, NULL
);
1805 ui_file_delete (buf
);
1811 aix_thread_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
1813 return ptid_build (ptid_get_pid (inferior_ptid
), 0, thread
);
1816 /* Initialize target aix_thread_ops. */
1819 init_aix_thread_ops (void)
1821 aix_thread_ops
.to_shortname
= "aix-threads";
1822 aix_thread_ops
.to_longname
= _("AIX pthread support");
1823 aix_thread_ops
.to_doc
= _("AIX pthread support");
1825 aix_thread_ops
.to_attach
= aix_thread_attach
;
1826 aix_thread_ops
.to_detach
= aix_thread_detach
;
1827 aix_thread_ops
.to_resume
= aix_thread_resume
;
1828 aix_thread_ops
.to_wait
= aix_thread_wait
;
1829 aix_thread_ops
.to_fetch_registers
= aix_thread_fetch_registers
;
1830 aix_thread_ops
.to_store_registers
= aix_thread_store_registers
;
1831 aix_thread_ops
.to_xfer_partial
= aix_thread_xfer_partial
;
1832 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1833 debugging when the inferior reaches pd_brk_addr. */
1834 aix_thread_ops
.to_mourn_inferior
= aix_thread_mourn_inferior
;
1835 aix_thread_ops
.to_thread_alive
= aix_thread_thread_alive
;
1836 aix_thread_ops
.to_pid_to_str
= aix_thread_pid_to_str
;
1837 aix_thread_ops
.to_extra_thread_info
= aix_thread_extra_thread_info
;
1838 aix_thread_ops
.to_get_ada_task_ptid
= aix_thread_get_ada_task_ptid
;
1839 aix_thread_ops
.to_stratum
= thread_stratum
;
1840 aix_thread_ops
.to_magic
= OPS_MAGIC
;
1843 /* Module startup initialization function, automagically called by
1846 void _initialize_aix_thread (void);
1849 _initialize_aix_thread (void)
1851 init_aix_thread_ops ();
1852 complete_target_initialization (&aix_thread_ops
);
1854 /* Notice when object files get loaded and unloaded. */
1855 observer_attach_new_objfile (new_objfile
);
1857 add_setshow_boolean_cmd ("aix-thread", class_maintenance
, &debug_aix_thread
,
1858 _("Set debugging of AIX thread module."),
1859 _("Show debugging of AIX thread module."),
1860 _("Enables debugging output (used to debug GDB)."),
1862 /* FIXME: i18n: Debugging of AIX thread
1863 module is \"%d\". */
1864 &setdebuglist
, &showdebuglist
);