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 /* Copy of the target over which ops is pushed. This is more
109 convenient than a pointer to deprecated_child_ops or core_ops,
110 because they lack current_target's default callbacks. */
112 static struct target_ops base_target
;
114 /* Address of the function that libpthread will call when libpthdebug
115 is ready to be initialized. */
117 static CORE_ADDR pd_brk_addr
;
119 /* Whether the current application is debuggable by pthdb. */
121 static int pd_able
= 0;
123 /* Whether a threaded application is being debugged. */
125 static int pd_active
= 0;
127 /* Whether the current architecture is 64-bit.
128 Only valid when pd_able is true. */
132 /* Forward declarations for pthdb callbacks. */
134 static int pdc_symbol_addrs (pthdb_user_t
, pthdb_symbol_t
*, int);
135 static int pdc_read_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
136 static int pdc_write_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
137 static int pdc_read_regs (pthdb_user_t user
, pthdb_tid_t tid
,
138 unsigned long long flags
,
139 pthdb_context_t
*context
);
140 static int pdc_write_regs (pthdb_user_t user
, pthdb_tid_t tid
,
141 unsigned long long flags
,
142 pthdb_context_t
*context
);
143 static int pdc_alloc (pthdb_user_t
, size_t, void **);
144 static int pdc_realloc (pthdb_user_t
, void *, size_t, void **);
145 static int pdc_dealloc (pthdb_user_t
, void *);
147 /* pthdb callbacks. */
149 static pthdb_callbacks_t pd_callbacks
= {
161 /* Current pthdb session. */
163 static pthdb_session_t pd_session
;
165 /* Return a printable representation of pthdebug function return
169 pd_status2str (int status
)
173 case PTHDB_SUCCESS
: return "SUCCESS";
174 case PTHDB_NOSYS
: return "NOSYS";
175 case PTHDB_NOTSUP
: return "NOTSUP";
176 case PTHDB_BAD_VERSION
: return "BAD_VERSION";
177 case PTHDB_BAD_USER
: return "BAD_USER";
178 case PTHDB_BAD_SESSION
: return "BAD_SESSION";
179 case PTHDB_BAD_MODE
: return "BAD_MODE";
180 case PTHDB_BAD_FLAGS
: return "BAD_FLAGS";
181 case PTHDB_BAD_CALLBACK
: return "BAD_CALLBACK";
182 case PTHDB_BAD_POINTER
: return "BAD_POINTER";
183 case PTHDB_BAD_CMD
: return "BAD_CMD";
184 case PTHDB_BAD_PTHREAD
: return "BAD_PTHREAD";
185 case PTHDB_BAD_ATTR
: return "BAD_ATTR";
186 case PTHDB_BAD_MUTEX
: return "BAD_MUTEX";
187 case PTHDB_BAD_MUTEXATTR
: return "BAD_MUTEXATTR";
188 case PTHDB_BAD_COND
: return "BAD_COND";
189 case PTHDB_BAD_CONDATTR
: return "BAD_CONDATTR";
190 case PTHDB_BAD_RWLOCK
: return "BAD_RWLOCK";
191 case PTHDB_BAD_RWLOCKATTR
: return "BAD_RWLOCKATTR";
192 case PTHDB_BAD_KEY
: return "BAD_KEY";
193 case PTHDB_BAD_PTID
: return "BAD_PTID";
194 case PTHDB_BAD_TID
: return "BAD_TID";
195 case PTHDB_CALLBACK
: return "CALLBACK";
196 case PTHDB_CONTEXT
: return "CONTEXT";
197 case PTHDB_HELD
: return "HELD";
198 case PTHDB_NOT_HELD
: return "NOT_HELD";
199 case PTHDB_MEMORY
: return "MEMORY";
200 case PTHDB_NOT_PTHREADED
: return "NOT_PTHREADED";
201 case PTHDB_SYMBOL
: return "SYMBOL";
202 case PTHDB_NOT_AVAIL
: return "NOT_AVAIL";
203 case PTHDB_INTERNAL
: return "INTERNAL";
204 default: return "UNKNOWN";
208 /* A call to ptrace(REQ, ID, ...) just returned RET. Check for
209 exceptional conditions and either return nonlocally or else return
210 1 for success and 0 for failure. */
213 ptrace_check (int req
, int id
, int ret
)
215 if (ret
== 0 && !errno
)
218 /* According to ptrace(2), ptrace may fail with EPERM if "the
219 Identifier parameter corresponds to a kernel thread which is
220 stopped in kernel mode and whose computational state cannot be
221 read or written." This happens quite often with register reads. */
228 if (ret
== -1 && errno
== EPERM
)
230 if (debug_aix_thread
)
231 fprintf_unfiltered (gdb_stdlog
,
232 "ptrace (%d, %d) = %d (errno = %d)\n",
233 req
, id
, ret
, errno
);
234 return ret
== -1 ? 0 : 1;
238 error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"),
239 req
, id
, ret
, errno
, safe_strerror (errno
));
240 return 0; /* Not reached. */
243 /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */
246 ptrace64aix (int req
, int id
, long long addr
, int data
, int *buf
)
249 return ptrace_check (req
, id
, ptracex (req
, id
, addr
, data
, buf
));
252 /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */
255 ptrace32 (int req
, int id
, int *addr
, int data
, int *buf
)
258 return ptrace_check (req
, id
,
259 ptrace (req
, id
, (int *) addr
, data
, buf
));
262 /* If *PIDP is a composite process/thread id, convert it to a
266 pid_to_prc (ptid_t
*ptidp
)
272 *ptidp
= pid_to_ptid (PIDGET (ptid
));
275 /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
276 the address of SYMBOLS[<i>].name. */
279 pdc_symbol_addrs (pthdb_user_t user
, pthdb_symbol_t
*symbols
, int count
)
281 struct minimal_symbol
*ms
;
285 if (debug_aix_thread
)
286 fprintf_unfiltered (gdb_stdlog
,
287 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
288 user
, (long) symbols
, count
);
290 for (i
= 0; i
< count
; i
++)
292 name
= symbols
[i
].name
;
293 if (debug_aix_thread
)
294 fprintf_unfiltered (gdb_stdlog
,
295 " symbols[%d].name = \"%s\"\n", i
, name
);
301 if (!(ms
= lookup_minimal_symbol (name
, NULL
, NULL
)))
303 if (debug_aix_thread
)
304 fprintf_unfiltered (gdb_stdlog
, " returning PDC_FAILURE\n");
307 symbols
[i
].addr
= SYMBOL_VALUE_ADDRESS (ms
);
309 if (debug_aix_thread
)
310 fprintf_unfiltered (gdb_stdlog
, " symbols[%d].addr = %s\n",
311 i
, hex_string (symbols
[i
].addr
));
313 if (debug_aix_thread
)
314 fprintf_unfiltered (gdb_stdlog
, " returning PDC_SUCCESS\n");
318 /* Read registers call back function should be able to read the
319 context information of a debuggee kernel thread from an active
320 process or from a core file. The information should be formatted
321 in context64 form for both 32-bit and 64-bit process.
322 If successful return 0, else non-zero is returned. */
325 pdc_read_regs (pthdb_user_t user
,
327 unsigned long long flags
,
328 pthdb_context_t
*context
)
330 /* This function doesn't appear to be used, so we could probably
331 just return 0 here. HOWEVER, if it is not defined, the OS will
332 complain and several thread debug functions will fail. In case
333 this is needed, I have implemented what I think it should do,
334 however this code is untested. */
336 uint64_t gprs64
[ppc_num_gprs
];
337 uint32_t gprs32
[ppc_num_gprs
];
338 double fprs
[ppc_num_fprs
];
339 struct ptxsprs sprs64
;
340 struct ptsprs sprs32
;
342 if (debug_aix_thread
)
343 fprintf_unfiltered (gdb_stdlog
, "pdc_read_regs tid=%d flags=%s\n",
344 (int) tid
, hex_string (flags
));
346 /* General-purpose registers. */
347 if (flags
& PTHDB_FLAG_GPRS
)
351 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
352 (unsigned long) gprs64
, 0, NULL
))
353 memset (gprs64
, 0, sizeof (gprs64
));
354 memcpy (context
->gpr
, gprs64
, sizeof(gprs64
));
358 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
359 memset (gprs32
, 0, sizeof (gprs32
));
360 memcpy (context
->gpr
, gprs32
, sizeof(gprs32
));
364 /* Floating-point registers. */
365 if (flags
& PTHDB_FLAG_FPRS
)
367 if (!ptrace32 (PTT_READ_FPRS
, tid
, (void *) fprs
, 0, NULL
))
368 memset (fprs
, 0, sizeof (fprs
));
369 memcpy (context
->fpr
, fprs
, sizeof(fprs
));
372 /* Special-purpose registers. */
373 if (flags
& PTHDB_FLAG_SPRS
)
377 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
378 (unsigned long) &sprs64
, 0, NULL
))
379 memset (&sprs64
, 0, sizeof (sprs64
));
380 memcpy (&context
->msr
, &sprs64
, sizeof(sprs64
));
384 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
385 memset (&sprs32
, 0, sizeof (sprs32
));
386 memcpy (&context
->msr
, &sprs32
, sizeof(sprs32
));
392 /* Write register function should be able to write requested context
393 information to specified debuggee's kernel thread id.
394 If successful return 0, else non-zero is returned. */
397 pdc_write_regs (pthdb_user_t user
,
399 unsigned long long flags
,
400 pthdb_context_t
*context
)
402 /* This function doesn't appear to be used, so we could probably
403 just return 0 here. HOWEVER, if it is not defined, the OS will
404 complain and several thread debug functions will fail. In case
405 this is needed, I have implemented what I think it should do,
406 however this code is untested. */
408 if (debug_aix_thread
)
409 fprintf_unfiltered (gdb_stdlog
, "pdc_write_regs tid=%d flags=%s\n",
410 (int) tid
, hex_string (flags
));
412 /* General-purpose registers. */
413 if (flags
& PTHDB_FLAG_GPRS
)
416 ptrace64aix (PTT_WRITE_GPRS
, tid
,
417 (unsigned long) context
->gpr
, 0, NULL
);
419 ptrace32 (PTT_WRITE_GPRS
, tid
, (int *) context
->gpr
, 0, NULL
);
422 /* Floating-point registers. */
423 if (flags
& PTHDB_FLAG_FPRS
)
425 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) context
->fpr
, 0, NULL
);
428 /* Special-purpose registers. */
429 if (flags
& PTHDB_FLAG_SPRS
)
433 ptrace64aix (PTT_WRITE_SPRS
, tid
,
434 (unsigned long) &context
->msr
, 0, NULL
);
438 ptrace32 (PTT_WRITE_SPRS
, tid
, (void *) &context
->msr
, 0, NULL
);
444 /* pthdb callback: read LEN bytes from process ADDR into BUF. */
447 pdc_read_data (pthdb_user_t user
, void *buf
,
448 pthdb_addr_t addr
, size_t len
)
452 if (debug_aix_thread
)
453 fprintf_unfiltered (gdb_stdlog
,
454 "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
455 user
, (long) buf
, hex_string (addr
), len
);
457 status
= target_read_memory (addr
, buf
, len
);
458 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
460 if (debug_aix_thread
)
461 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n",
462 status
, pd_status2str (ret
));
466 /* pthdb callback: write LEN bytes from BUF to process ADDR. */
469 pdc_write_data (pthdb_user_t user
, void *buf
,
470 pthdb_addr_t addr
, size_t len
)
474 if (debug_aix_thread
)
475 fprintf_unfiltered (gdb_stdlog
,
476 "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
477 user
, (long) buf
, hex_string (addr
), len
);
479 status
= target_write_memory (addr
, buf
, len
);
480 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
482 if (debug_aix_thread
)
483 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n", status
,
484 pd_status2str (ret
));
488 /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
492 pdc_alloc (pthdb_user_t user
, size_t len
, void **bufp
)
494 if (debug_aix_thread
)
495 fprintf_unfiltered (gdb_stdlog
,
496 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
497 user
, len
, (long) bufp
);
498 *bufp
= xmalloc (len
);
499 if (debug_aix_thread
)
500 fprintf_unfiltered (gdb_stdlog
,
501 " malloc returned 0x%lx\n", (long) *bufp
);
503 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
506 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
509 /* pthdb callback: reallocate BUF, which was allocated by the alloc or
510 realloc callback, so that it contains LEN bytes, and store a
511 pointer to the result in BUFP. */
514 pdc_realloc (pthdb_user_t user
, void *buf
, size_t len
, void **bufp
)
516 if (debug_aix_thread
)
517 fprintf_unfiltered (gdb_stdlog
,
518 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
519 user
, (long) buf
, len
, (long) bufp
);
520 *bufp
= xrealloc (buf
, len
);
521 if (debug_aix_thread
)
522 fprintf_unfiltered (gdb_stdlog
,
523 " realloc returned 0x%lx\n", (long) *bufp
);
524 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
527 /* pthdb callback: free BUF, which was allocated by the alloc or
531 pdc_dealloc (pthdb_user_t user
, void *buf
)
533 if (debug_aix_thread
)
534 fprintf_unfiltered (gdb_stdlog
,
535 "pdc_free (user = %ld, buf = 0x%lx)\n", user
,
541 /* Return a printable representation of pthread STATE. */
544 state2str (pthdb_state_t state
)
549 /* i18n: Like "Thread-Id %d, [state] idle" */
550 return _("idle"); /* being created */
552 /* i18n: Like "Thread-Id %d, [state] running" */
553 return _("running"); /* running */
555 /* i18n: Like "Thread-Id %d, [state] sleeping" */
556 return _("sleeping"); /* awaiting an event */
558 /* i18n: Like "Thread-Id %d, [state] ready" */
559 return _("ready"); /* runnable */
561 /* i18n: Like "Thread-Id %d, [state] finished" */
562 return _("finished"); /* awaiting a join/detach */
564 /* i18n: Like "Thread-Id %d, [state] unknown" */
569 /* qsort() comparison function for sorting pd_thread structs by pthid. */
572 pcmp (const void *p1v
, const void *p2v
)
574 struct pd_thread
*p1
= (struct pd_thread
*) p1v
;
575 struct pd_thread
*p2
= (struct pd_thread
*) p2v
;
576 return p1
->pthid
< p2
->pthid
? -1 : p1
->pthid
> p2
->pthid
;
579 /* iterate_over_threads() callback for counting GDB threads. */
582 giter_count (struct thread_info
*thread
, void *countp
)
588 /* iterate_over_threads() callback for accumulating GDB thread pids. */
591 giter_accum (struct thread_info
*thread
, void *bufp
)
593 **(struct thread_info
***) bufp
= thread
;
594 (*(struct thread_info
***) bufp
)++;
598 /* ptid comparison function */
601 ptid_cmp (ptid_t ptid1
, ptid_t ptid2
)
605 if (ptid_get_pid (ptid1
) < ptid_get_pid (ptid2
))
607 else if (ptid_get_pid (ptid1
) > ptid_get_pid (ptid2
))
609 else if (ptid_get_tid (ptid1
) < ptid_get_tid (ptid2
))
611 else if (ptid_get_tid (ptid1
) > ptid_get_tid (ptid2
))
613 else if (ptid_get_lwp (ptid1
) < ptid_get_lwp (ptid2
))
615 else if (ptid_get_lwp (ptid1
) > ptid_get_lwp (ptid2
))
621 /* qsort() comparison function for sorting thread_info structs by pid. */
624 gcmp (const void *t1v
, const void *t2v
)
626 struct thread_info
*t1
= *(struct thread_info
**) t1v
;
627 struct thread_info
*t2
= *(struct thread_info
**) t2v
;
628 return ptid_cmp (t1
->ptid
, t2
->ptid
);
631 /* Search through the list of all kernel threads for the thread
632 that has stopped on a SIGTRAP signal, and return its TID.
633 Return 0 if none found. */
636 get_signaled_thread (void)
638 struct thrdsinfo64 thrinf
;
639 pthdb_tid_t ktid
= 0;
642 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
643 extern int getthrds (pid_t
, struct thrdsinfo64
*,
644 int, pthdb_tid_t
*, int);
648 if (getthrds (PIDGET (inferior_ptid
), &thrinf
,
649 sizeof (thrinf
), &ktid
, 1) != 1)
652 if (thrinf
.ti_cursig
== SIGTRAP
)
653 return thrinf
.ti_tid
;
656 /* Didn't find any thread stopped on a SIGTRAP signal. */
660 /* Synchronize GDB's thread list with libpthdebug's.
662 There are some benefits of doing this every time the inferior stops:
664 - allows users to run thread-specific commands without needing to
665 run "info threads" first
667 - helps pthdb_tid_pthread() work properly (see "libpthdebug
668 peculiarities" at the top of this module)
670 - simplifies the demands placed on libpthdebug, which seems to
671 have difficulty with certain call patterns */
674 sync_threadlists (void)
676 int cmd
, status
, infpid
;
677 int pcount
, psize
, pi
, gcount
, gi
;
678 struct pd_thread
*pbuf
;
679 struct thread_info
**gbuf
, **g
, *thread
;
680 pthdb_pthread_t pdtid
;
684 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
688 pbuf
= (struct pd_thread
*) xmalloc (psize
* sizeof *pbuf
);
690 for (cmd
= PTHDB_LIST_FIRST
;; cmd
= PTHDB_LIST_NEXT
)
692 status
= pthdb_pthread (pd_session
, &pdtid
, cmd
);
693 if (status
!= PTHDB_SUCCESS
|| pdtid
== PTHDB_INVALID_PTHREAD
)
696 status
= pthdb_pthread_ptid (pd_session
, pdtid
, &pthid
);
697 if (status
!= PTHDB_SUCCESS
|| pthid
== PTHDB_INVALID_PTID
)
703 pbuf
= (struct pd_thread
*) xrealloc (pbuf
,
704 psize
* sizeof *pbuf
);
706 pbuf
[pcount
].pdtid
= pdtid
;
707 pbuf
[pcount
].pthid
= pthid
;
711 for (pi
= 0; pi
< pcount
; pi
++)
713 status
= pthdb_pthread_tid (pd_session
, pbuf
[pi
].pdtid
, &tid
);
714 if (status
!= PTHDB_SUCCESS
)
715 tid
= PTHDB_INVALID_TID
;
719 qsort (pbuf
, pcount
, sizeof *pbuf
, pcmp
);
721 /* Accumulate an array of GDB threads sorted by pid. */
724 iterate_over_threads (giter_count
, &gcount
);
725 g
= gbuf
= (struct thread_info
**) xmalloc (gcount
* sizeof *gbuf
);
726 iterate_over_threads (giter_accum
, &g
);
727 qsort (gbuf
, gcount
, sizeof *gbuf
, gcmp
);
729 /* Apply differences between the two arrays to GDB's thread list. */
731 infpid
= PIDGET (inferior_ptid
);
732 for (pi
= gi
= 0; pi
< pcount
|| gi
< gcount
;)
736 delete_thread (gbuf
[gi
]->ptid
);
739 else if (gi
== gcount
)
741 thread
= add_thread (BUILD_THREAD (pbuf
[pi
].pthid
, infpid
));
742 thread
->private = xmalloc (sizeof (struct private_thread_info
));
743 thread
->private->pdtid
= pbuf
[pi
].pdtid
;
744 thread
->private->tid
= pbuf
[pi
].tid
;
752 pptid
= BUILD_THREAD (pbuf
[pi
].pthid
, infpid
);
753 gptid
= gbuf
[gi
]->ptid
;
754 pdtid
= pbuf
[pi
].pdtid
;
757 cmp_result
= ptid_cmp (pptid
, gptid
);
761 gbuf
[gi
]->private->pdtid
= pdtid
;
762 gbuf
[gi
]->private->tid
= tid
;
766 else if (cmp_result
> 0)
768 delete_thread (gptid
);
773 thread
= add_thread (pptid
);
774 thread
->private = xmalloc (sizeof (struct private_thread_info
));
775 thread
->private->pdtid
= pdtid
;
776 thread
->private->tid
= tid
;
786 /* Iterate_over_threads() callback for locating a thread, using
787 the TID of its associated kernel thread. */
790 iter_tid (struct thread_info
*thread
, void *tidp
)
792 const pthdb_tid_t tid
= *(pthdb_tid_t
*)tidp
;
794 return (thread
->private->tid
== tid
);
797 /* Synchronize libpthdebug's state with the inferior and with GDB,
798 generate a composite process/thread <pid> for the current thread,
799 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
802 pd_update (int set_infpid
)
807 struct thread_info
*thread
= NULL
;
810 return inferior_ptid
;
812 status
= pthdb_session_update (pd_session
);
813 if (status
!= PTHDB_SUCCESS
)
814 return inferior_ptid
;
818 /* Define "current thread" as one that just received a trap signal. */
820 tid
= get_signaled_thread ();
822 thread
= iterate_over_threads (iter_tid
, &tid
);
824 ptid
= inferior_ptid
;
829 inferior_ptid
= ptid
;
834 /* Try to start debugging threads in the current process.
835 If successful and SET_INFPID, set inferior_ptid to reflect the
839 pd_activate (int set_infpid
)
843 status
= pthdb_session_init (PD_USER
, arch64
? PEM_64BIT
: PEM_32BIT
,
844 PTHDB_FLAG_REGS
, &pd_callbacks
,
846 if (status
!= PTHDB_SUCCESS
)
848 return inferior_ptid
;
851 return pd_update (set_infpid
);
854 /* Undo the effects of pd_activate(). */
861 pthdb_session_destroy (pd_session
);
863 pid_to_prc (&inferior_ptid
);
867 /* An object file has just been loaded. Check whether the current
868 application is pthreaded, and if so, prepare for thread debugging. */
875 struct minimal_symbol
*ms
;
877 /* Don't initialize twice. */
881 /* Check application word size. */
882 arch64
= register_size (current_gdbarch
, 0) == 8;
884 /* Check whether the application is pthreaded. */
886 status
= pthdb_session_pthreaded (PD_USER
, PTHDB_FLAG_REGS
,
887 &pd_callbacks
, &stub_name
);
888 if ((status
!= PTHDB_SUCCESS
&&
889 status
!= PTHDB_NOT_PTHREADED
) || !stub_name
)
892 /* Set a breakpoint on the returned stub function. */
893 if (!(ms
= lookup_minimal_symbol (stub_name
, NULL
, NULL
)))
895 pd_brk_addr
= SYMBOL_VALUE_ADDRESS (ms
);
896 if (!create_thread_event_breakpoint (pd_brk_addr
))
899 /* Prepare for thread debugging. */
900 base_target
= current_target
;
901 push_target (&aix_thread_ops
);
904 /* If we're debugging a core file or an attached inferior, the
905 pthread library may already have been initialized, so try to
906 activate thread debugging. */
910 /* Undo the effects of pd_enable(). */
920 unpush_target (&aix_thread_ops
);
923 /* new_objfile observer callback.
925 If OBJFILE is non-null, check whether a threaded application is
926 being debugged, and if so, prepare for thread debugging.
928 If OBJFILE is null, stop debugging threads. */
931 new_objfile (struct objfile
*objfile
)
939 /* Attach to process specified by ARGS. */
942 aix_thread_attach (struct target_ops
*ops
, char *args
, int from_tty
)
944 base_target
.to_attach (&base_target
, args
, from_tty
);
948 /* Detach from the process attached to by aix_thread_attach(). */
951 aix_thread_detach (struct target_ops
*ops
, char *args
, int from_tty
)
954 base_target
.to_detach (&base_target
, args
, from_tty
);
957 /* Tell the inferior process to continue running thread PID if != -1
958 and all threads otherwise. */
961 aix_thread_resume (struct target_ops
*ops
,
962 ptid_t ptid
, int step
, enum target_signal sig
)
964 struct thread_info
*thread
;
969 struct cleanup
*cleanup
= save_inferior_ptid ();
970 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
971 base_target
.to_resume (ops
, ptid
, step
, sig
);
972 do_cleanups (cleanup
);
976 thread
= find_thread_pid (ptid
);
978 error (_("aix-thread resume: unknown pthread %ld"),
981 tid
[0] = thread
->private->tid
;
982 if (tid
[0] == PTHDB_INVALID_TID
)
983 error (_("aix-thread resume: no tid for pthread %ld"),
988 ptrace64aix (PTT_CONTINUE
, tid
[0], 1,
989 target_signal_to_host (sig
), (void *) tid
);
991 ptrace32 (PTT_CONTINUE
, tid
[0], (int *) 1,
992 target_signal_to_host (sig
), (void *) tid
);
996 /* Wait for thread/process ID if != -1 or for any thread otherwise.
997 If an error occurs, return -1, else return the pid of the stopped
1001 aix_thread_wait (struct target_ops
*ops
,
1002 ptid_t ptid
, struct target_waitstatus
*status
)
1004 struct cleanup
*cleanup
= save_inferior_ptid ();
1008 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1009 ptid
= base_target
.to_wait (&base_target
, 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
;
1286 if (!PD_TID (inferior_ptid
))
1287 base_target
.to_fetch_registers (ops
, regcache
, regno
);
1290 thread
= find_thread_pid (inferior_ptid
);
1291 tid
= thread
->private->tid
;
1293 if (tid
== PTHDB_INVALID_TID
)
1294 fetch_regs_user_thread (regcache
, thread
->private->pdtid
);
1296 fetch_regs_kernel_thread (regcache
, regno
, tid
);
1300 /* Store the gp registers into an array of uint32_t or uint64_t. */
1303 fill_gprs64 (const struct regcache
*regcache
, uint64_t *vals
)
1305 struct gdbarch_tdep
*tdep
= gdbarch_tdep (get_regcache_arch (regcache
));
1308 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1309 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ regno
))
1310 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1315 fill_gprs32 (const struct regcache
*regcache
, uint32_t *vals
)
1317 struct gdbarch_tdep
*tdep
= gdbarch_tdep (get_regcache_arch (regcache
));
1320 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1321 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ regno
))
1322 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1326 /* Store the floating point registers into a double array. */
1328 fill_fprs (const struct regcache
*regcache
, double *vals
)
1330 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1331 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1334 /* This function should never be called on architectures without
1335 floating-point registers. */
1336 gdb_assert (ppc_floating_point_unit_p (gdbarch
));
1338 for (regno
= tdep
->ppc_fp0_regnum
;
1339 regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
;
1341 if (regcache_valid_p (regcache
, regno
))
1342 regcache_raw_collect (regcache
, regno
, vals
+ regno
);
1345 /* Store the special registers into the specified 64-bit and 32-bit
1349 fill_sprs64 (const struct regcache
*regcache
,
1350 uint64_t *iar
, uint64_t *msr
, uint32_t *cr
,
1351 uint64_t *lr
, uint64_t *ctr
, uint32_t *xer
,
1354 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1355 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1357 /* Verify that the size of the size of the IAR buffer is the
1358 same as the raw size of the PC (in the register cache). If
1359 they're not, then either GDB has been built incorrectly, or
1360 there's some other kind of internal error. To be really safe,
1361 we should check all of the sizes. */
1362 gdb_assert (sizeof (*iar
) == register_size
1363 (gdbarch
, gdbarch_pc_regnum (gdbarch
)));
1365 if (regcache_valid_p (regcache
, gdbarch_pc_regnum (gdbarch
)))
1366 regcache_raw_collect (regcache
, gdbarch_pc_regnum (gdbarch
), iar
);
1367 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1368 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1369 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1370 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1371 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1372 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1373 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1374 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1375 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1376 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1377 if (tdep
->ppc_fpscr_regnum
>= 0
1378 && regcache_valid_p (regcache
, tdep
->ppc_fpscr_regnum
))
1379 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1383 fill_sprs32 (const struct regcache
*regcache
,
1384 uint32_t *iar
, uint32_t *msr
, uint32_t *cr
,
1385 uint32_t *lr
, uint32_t *ctr
, uint32_t *xer
,
1388 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1389 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1391 /* Verify that the size of the size of the IAR buffer is the
1392 same as the raw size of the PC (in the register cache). If
1393 they're not, then either GDB has been built incorrectly, or
1394 there's some other kind of internal error. To be really safe,
1395 we should check all of the sizes. */
1396 gdb_assert (sizeof (*iar
) == register_size (gdbarch
,
1397 gdbarch_pc_regnum (gdbarch
)));
1399 if (regcache_valid_p (regcache
, gdbarch_pc_regnum (gdbarch
)))
1400 regcache_raw_collect (regcache
, gdbarch_pc_regnum (gdbarch
), iar
);
1401 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1402 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1403 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1404 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1405 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1406 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1407 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1408 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1409 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1410 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1411 if (tdep
->ppc_fpscr_regnum
>= 0
1412 && regcache_valid_p (regcache
, tdep
->ppc_fpscr_regnum
))
1413 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1416 /* Store all registers into pthread PDTID, which doesn't have a kernel
1419 It's possible to store a single register into a non-kernel pthread,
1420 but I doubt it's worth the effort. */
1423 store_regs_user_thread (const struct regcache
*regcache
, pthdb_pthread_t pdtid
)
1425 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1426 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1428 pthdb_context_t ctx
;
1433 if (debug_aix_thread
)
1434 fprintf_unfiltered (gdb_stdlog
,
1435 "store_regs_user_thread %lx\n", (long) pdtid
);
1437 /* Retrieve the thread's current context for its non-register
1439 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1440 if (status
!= PTHDB_SUCCESS
)
1441 error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"),
1442 pd_status2str (status
));
1444 /* Collect general-purpose register values from the regcache. */
1446 for (i
= 0; i
< ppc_num_gprs
; i
++)
1447 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ i
))
1451 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1457 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1463 /* Collect floating-point register values from the regcache. */
1464 if (ppc_floating_point_unit_p (gdbarch
))
1465 fill_fprs (regcache
, ctx
.fpr
);
1467 /* Special registers (always kept in ctx as 64 bits). */
1470 fill_sprs64 (regcache
, &ctx
.iar
, &ctx
.msr
, &ctx
.cr
, &ctx
.lr
, &ctx
.ctr
,
1471 &ctx
.xer
, &ctx
.fpscr
);
1475 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1476 Solution: use 32-bit temp variables. */
1477 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1480 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
, &tmp_ctr
,
1481 &tmp_xer
, &tmp_fpscr
);
1482 if (regcache_valid_p (regcache
, gdbarch_pc_regnum (gdbarch
)))
1484 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1486 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1488 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1490 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1492 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1494 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1495 ctx
.fpscr
= tmp_fpscr
;
1498 status
= pthdb_pthread_setcontext (pd_session
, pdtid
, &ctx
);
1499 if (status
!= PTHDB_SUCCESS
)
1500 error (_("aix-thread: store_registers: pthdb_pthread_setcontext returned %s"),
1501 pd_status2str (status
));
1504 /* Store register REGNO if != -1 or all registers otherwise into
1507 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1508 SPRs, but there's no way to set individual registers within those
1509 groups. Therefore, if REGNO != -1, this function stores an entire
1513 store_regs_kernel_thread (const struct regcache
*regcache
, int regno
,
1516 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
1517 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
1518 uint64_t gprs64
[ppc_num_gprs
];
1519 uint32_t gprs32
[ppc_num_gprs
];
1520 double fprs
[ppc_num_fprs
];
1521 struct ptxsprs sprs64
;
1522 struct ptsprs sprs32
;
1525 if (debug_aix_thread
)
1526 fprintf_unfiltered (gdb_stdlog
,
1527 "store_regs_kernel_thread tid=%lx regno=%d\n",
1530 /* General-purpose registers. */
1532 || (tdep
->ppc_gp0_regnum
<= regno
1533 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_fprs
))
1537 /* Pre-fetch: some regs may not be in the cache. */
1538 ptrace64aix (PTT_READ_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1539 fill_gprs64 (regcache
, gprs64
);
1540 ptrace64aix (PTT_WRITE_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1544 /* Pre-fetch: some regs may not be in the cache. */
1545 ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
);
1546 fill_gprs32 (regcache
, gprs32
);
1547 ptrace32 (PTT_WRITE_GPRS
, tid
, gprs32
, 0, NULL
);
1551 /* Floating-point registers. */
1553 if (ppc_floating_point_unit_p (gdbarch
)
1555 || (regno
>= tdep
->ppc_fp0_regnum
1556 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1558 /* Pre-fetch: some regs may not be in the cache. */
1559 ptrace32 (PTT_READ_FPRS
, tid
, (void *) fprs
, 0, NULL
);
1560 fill_fprs (regcache
, fprs
);
1561 ptrace32 (PTT_WRITE_FPRS
, tid
, (void *) fprs
, 0, NULL
);
1564 /* Special-purpose registers. */
1566 if (regno
== -1 || special_register_p (gdbarch
, regno
))
1570 /* Pre-fetch: some registers won't be in the cache. */
1571 ptrace64aix (PTT_READ_SPRS
, tid
,
1572 (unsigned long) &sprs64
, 0, NULL
);
1573 fill_sprs64 (regcache
, &sprs64
.pt_iar
, &sprs64
.pt_msr
,
1574 &sprs64
.pt_cr
, &sprs64
.pt_lr
, &sprs64
.pt_ctr
,
1575 &sprs64
.pt_xer
, &sprs64
.pt_fpscr
);
1576 ptrace64aix (PTT_WRITE_SPRS
, tid
,
1577 (unsigned long) &sprs64
, 0, NULL
);
1581 /* The contents of "struct ptspr" were declared as "unsigned
1582 long" up to AIX 5.2, but are "unsigned int" since 5.3.
1583 Use temporaries to work around this problem. Also, add an
1584 assert here to make sure we fail if the system header files
1585 use "unsigned long", and the size of that type is not what
1586 the headers expect. */
1587 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1590 gdb_assert (sizeof (sprs32
.pt_iar
) == 4);
1592 /* Pre-fetch: some registers won't be in the cache. */
1593 ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1595 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
,
1596 &tmp_ctr
, &tmp_xer
, &tmp_fpscr
);
1598 sprs32
.pt_iar
= tmp_iar
;
1599 sprs32
.pt_msr
= tmp_msr
;
1600 sprs32
.pt_cr
= tmp_cr
;
1601 sprs32
.pt_lr
= tmp_lr
;
1602 sprs32
.pt_ctr
= tmp_ctr
;
1603 sprs32
.pt_xer
= tmp_xer
;
1604 sprs32
.pt_fpscr
= tmp_fpscr
;
1606 if (tdep
->ppc_mq_regnum
>= 0)
1607 if (regcache_valid_p (regcache
, tdep
->ppc_mq_regnum
))
1608 regcache_raw_collect (regcache
, tdep
->ppc_mq_regnum
,
1611 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1616 /* Store gdb's current view of the register set into the
1617 thread/process specified by inferior_ptid. */
1620 aix_thread_store_registers (struct target_ops
*ops
,
1621 struct regcache
*regcache
, int regno
)
1623 struct thread_info
*thread
;
1626 if (!PD_TID (inferior_ptid
))
1627 base_target
.to_store_registers (ops
, regcache
, regno
);
1630 thread
= find_thread_pid (inferior_ptid
);
1631 tid
= thread
->private->tid
;
1633 if (tid
== PTHDB_INVALID_TID
)
1634 store_regs_user_thread (regcache
, thread
->private->pdtid
);
1636 store_regs_kernel_thread (regcache
, regno
, tid
);
1640 /* Attempt a transfer all LEN bytes starting at OFFSET between the
1641 inferior's OBJECT:ANNEX space and GDB's READBUF/WRITEBUF buffer.
1642 Return the number of bytes actually transferred. */
1645 aix_thread_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1646 const char *annex
, gdb_byte
*readbuf
,
1647 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1649 struct cleanup
*old_chain
= save_inferior_ptid ();
1652 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1653 xfer
= base_target
.to_xfer_partial (ops
, object
, annex
,
1654 readbuf
, writebuf
, offset
, len
);
1656 do_cleanups (old_chain
);
1660 /* Kill and forget about the inferior process. */
1663 aix_thread_kill (void)
1665 struct cleanup
*cleanup
= save_inferior_ptid ();
1667 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1668 base_target
.to_kill ();
1669 do_cleanups (cleanup
);
1672 /* Clean up after the inferior exits. */
1675 aix_thread_mourn_inferior (struct target_ops
*ops
)
1678 base_target
.to_mourn_inferior (&base_target
);
1681 /* Return whether thread PID is still valid. */
1684 aix_thread_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1687 return base_target
.to_thread_alive (ops
, ptid
);
1689 /* We update the thread list every time the child stops, so all
1690 valid threads should be in the thread list. */
1691 return in_thread_list (ptid
);
1694 /* Return a printable representation of composite PID for use in
1695 "info threads" output. */
1698 aix_thread_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
1700 static char *ret
= NULL
;
1703 return base_target
.to_pid_to_str (&base_target
, ptid
);
1705 /* Free previous return value; a new one will be allocated by
1709 ret
= xstrprintf (_("Thread %ld"), ptid_get_tid (ptid
));
1713 /* Return a printable representation of extra information about
1714 THREAD, for use in "info threads" output. */
1717 aix_thread_extra_thread_info (struct thread_info
*thread
)
1719 struct ui_file
*buf
;
1721 pthdb_pthread_t pdtid
;
1723 pthdb_state_t state
;
1724 pthdb_suspendstate_t suspendstate
;
1725 pthdb_detachstate_t detachstate
;
1728 static char *ret
= NULL
;
1730 if (!PD_TID (thread
->ptid
))
1733 buf
= mem_fileopen ();
1735 pdtid
= thread
->private->pdtid
;
1736 tid
= thread
->private->tid
;
1738 if (tid
!= PTHDB_INVALID_TID
)
1739 /* i18n: Like "thread-identifier %d, [state] running, suspended" */
1740 fprintf_unfiltered (buf
, _("tid %d"), (int)tid
);
1742 status
= pthdb_pthread_state (pd_session
, pdtid
, &state
);
1743 if (status
!= PTHDB_SUCCESS
)
1745 fprintf_unfiltered (buf
, ", %s", state2str (state
));
1747 status
= pthdb_pthread_suspendstate (pd_session
, pdtid
,
1749 if (status
== PTHDB_SUCCESS
&& suspendstate
== PSS_SUSPENDED
)
1750 /* i18n: Like "Thread-Id %d, [state] running, suspended" */
1751 fprintf_unfiltered (buf
, _(", suspended"));
1753 status
= pthdb_pthread_detachstate (pd_session
, pdtid
,
1755 if (status
== PTHDB_SUCCESS
&& detachstate
== PDS_DETACHED
)
1756 /* i18n: Like "Thread-Id %d, [state] running, detached" */
1757 fprintf_unfiltered (buf
, _(", detached"));
1759 pthdb_pthread_cancelpend (pd_session
, pdtid
, &cancelpend
);
1760 if (status
== PTHDB_SUCCESS
&& cancelpend
)
1761 /* i18n: Like "Thread-Id %d, [state] running, cancel pending" */
1762 fprintf_unfiltered (buf
, _(", cancel pending"));
1764 ui_file_write (buf
, "", 1);
1766 xfree (ret
); /* Free old buffer. */
1768 ret
= ui_file_xstrdup (buf
, &length
);
1769 ui_file_delete (buf
);
1775 aix_thread_get_ada_task_ptid (long lwp
, long thread
)
1777 return ptid_build (ptid_get_pid (inferior_ptid
), 0, thread
);
1780 /* Initialize target aix_thread_ops. */
1783 init_aix_thread_ops (void)
1785 aix_thread_ops
.to_shortname
= "aix-threads";
1786 aix_thread_ops
.to_longname
= _("AIX pthread support");
1787 aix_thread_ops
.to_doc
= _("AIX pthread support");
1789 aix_thread_ops
.to_attach
= aix_thread_attach
;
1790 aix_thread_ops
.to_detach
= aix_thread_detach
;
1791 aix_thread_ops
.to_resume
= aix_thread_resume
;
1792 aix_thread_ops
.to_wait
= aix_thread_wait
;
1793 aix_thread_ops
.to_fetch_registers
= aix_thread_fetch_registers
;
1794 aix_thread_ops
.to_store_registers
= aix_thread_store_registers
;
1795 aix_thread_ops
.to_xfer_partial
= aix_thread_xfer_partial
;
1796 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1797 debugging when the inferior reaches pd_brk_addr. */
1798 aix_thread_ops
.to_kill
= aix_thread_kill
;
1799 aix_thread_ops
.to_mourn_inferior
= aix_thread_mourn_inferior
;
1800 aix_thread_ops
.to_thread_alive
= aix_thread_thread_alive
;
1801 aix_thread_ops
.to_pid_to_str
= aix_thread_pid_to_str
;
1802 aix_thread_ops
.to_extra_thread_info
= aix_thread_extra_thread_info
;
1803 aix_thread_ops
.to_get_ada_task_ptid
= aix_thread_get_ada_task_ptid
;
1804 aix_thread_ops
.to_stratum
= thread_stratum
;
1805 aix_thread_ops
.to_magic
= OPS_MAGIC
;
1808 /* Module startup initialization function, automagically called by
1812 _initialize_aix_thread (void)
1814 init_aix_thread_ops ();
1815 add_target (&aix_thread_ops
);
1817 /* Notice when object files get loaded and unloaded. */
1818 observer_attach_new_objfile (new_objfile
);
1820 add_setshow_boolean_cmd ("aix-thread", class_maintenance
, &debug_aix_thread
,
1821 _("Set debugging of AIX thread module."),
1822 _("Show debugging of AIX thread module."),
1823 _("Enables debugging output (used to debug GDB)."),
1824 NULL
, NULL
, /* FIXME: i18n: Debugging of AIX thread module is \"%d\". */
1825 &setdebuglist
, &showdebuglist
);