1 /* Low level interface for debugging AIX 4.3+ pthreads.
3 Copyright (C) 1999, 2000, 2002, 2007 Free Software Foundation, Inc.
4 Written by Nick Duffek <nsd@redhat.com>.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
24 /* This module uses the libpthdebug.a library provided by AIX 4.3+ for
25 debugging pthread applications.
27 Some name prefix conventions:
28 pthdb_ provided by libpthdebug.a
29 pdc_ callbacks that this module provides to libpthdebug.a
30 pd_ variables or functions interfacing with libpthdebug.a
32 libpthdebug peculiarities:
34 - pthdb_ptid_pthread() is prototyped in <sys/pthdebug.h>, but
35 it's not documented, and after several calls it stops working
36 and causes other libpthdebug functions to fail.
38 - pthdb_tid_pthread() doesn't always work after
39 pthdb_session_update(), but it does work after cycling through
40 all threads using pthdb_pthread().
45 #include "gdb_assert.h"
46 #include "gdbthread.h"
52 #include "gdb_string.h"
56 #include <sys/types.h>
57 #include <sys/ptrace.h>
60 #include <sys/pthdebug.h>
62 /* Whether to emit debugging output. */
63 static int debug_aix_thread
;
65 /* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */
66 #ifndef PTHDB_VERSION_3
67 #define pthdb_tid_t tid_t
70 /* Return whether to treat PID as a debuggable thread id. */
72 #define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0)
74 /* Build a thread ptid. */
75 #define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID)
77 /* Build and lwp ptid. */
78 #define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP)
80 /* pthdb_user_t value that we pass to pthdb functions. 0 causes
81 PTHDB_BAD_USER errors, so use 1. */
85 /* Success and failure values returned by pthdb callbacks. */
87 #define PDC_SUCCESS PTHDB_SUCCESS
88 #define PDC_FAILURE PTHDB_CALLBACK
90 /* Private data attached to each element in GDB's thread list. */
92 struct private_thread_info
{
93 pthdb_pthread_t pdtid
; /* thread's libpthdebug id */
94 pthdb_tid_t tid
; /* kernel thread id */
97 /* Information about a thread of which libpthdebug is aware. */
100 pthdb_pthread_t pdtid
;
105 /* This module's target-specific operations, active while pd_able is true. */
107 static struct target_ops aix_thread_ops
;
109 /* Copy of the target over which ops is pushed. This is more
110 convenient than a pointer to deprecated_child_ops or core_ops,
111 because they lack current_target's default callbacks. */
113 static struct target_ops base_target
;
115 /* Address of the function that libpthread will call when libpthdebug
116 is ready to be initialized. */
118 static CORE_ADDR pd_brk_addr
;
120 /* Whether the current application is debuggable by pthdb. */
122 static int pd_able
= 0;
124 /* Whether a threaded application is being debugged. */
126 static int pd_active
= 0;
128 /* Whether the current architecture is 64-bit.
129 Only valid when pd_able is true. */
133 /* Forward declarations for pthdb callbacks. */
135 static int pdc_symbol_addrs (pthdb_user_t
, pthdb_symbol_t
*, int);
136 static int pdc_read_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
137 static int pdc_write_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
138 static int pdc_read_regs (pthdb_user_t user
, pthdb_tid_t tid
,
139 unsigned long long flags
,
140 pthdb_context_t
*context
);
141 static int pdc_write_regs (pthdb_user_t user
, pthdb_tid_t tid
,
142 unsigned long long flags
,
143 pthdb_context_t
*context
);
144 static int pdc_alloc (pthdb_user_t
, size_t, void **);
145 static int pdc_realloc (pthdb_user_t
, void *, size_t, void **);
146 static int pdc_dealloc (pthdb_user_t
, void *);
148 /* pthdb callbacks. */
150 static pthdb_callbacks_t pd_callbacks
= {
162 /* Current pthdb session. */
164 static pthdb_session_t pd_session
;
166 /* Return a printable representation of pthdebug function return
170 pd_status2str (int status
)
174 case PTHDB_SUCCESS
: return "SUCCESS";
175 case PTHDB_NOSYS
: return "NOSYS";
176 case PTHDB_NOTSUP
: return "NOTSUP";
177 case PTHDB_BAD_VERSION
: return "BAD_VERSION";
178 case PTHDB_BAD_USER
: return "BAD_USER";
179 case PTHDB_BAD_SESSION
: return "BAD_SESSION";
180 case PTHDB_BAD_MODE
: return "BAD_MODE";
181 case PTHDB_BAD_FLAGS
: return "BAD_FLAGS";
182 case PTHDB_BAD_CALLBACK
: return "BAD_CALLBACK";
183 case PTHDB_BAD_POINTER
: return "BAD_POINTER";
184 case PTHDB_BAD_CMD
: return "BAD_CMD";
185 case PTHDB_BAD_PTHREAD
: return "BAD_PTHREAD";
186 case PTHDB_BAD_ATTR
: return "BAD_ATTR";
187 case PTHDB_BAD_MUTEX
: return "BAD_MUTEX";
188 case PTHDB_BAD_MUTEXATTR
: return "BAD_MUTEXATTR";
189 case PTHDB_BAD_COND
: return "BAD_COND";
190 case PTHDB_BAD_CONDATTR
: return "BAD_CONDATTR";
191 case PTHDB_BAD_RWLOCK
: return "BAD_RWLOCK";
192 case PTHDB_BAD_RWLOCKATTR
: return "BAD_RWLOCKATTR";
193 case PTHDB_BAD_KEY
: return "BAD_KEY";
194 case PTHDB_BAD_PTID
: return "BAD_PTID";
195 case PTHDB_BAD_TID
: return "BAD_TID";
196 case PTHDB_CALLBACK
: return "CALLBACK";
197 case PTHDB_CONTEXT
: return "CONTEXT";
198 case PTHDB_HELD
: return "HELD";
199 case PTHDB_NOT_HELD
: return "NOT_HELD";
200 case PTHDB_MEMORY
: return "MEMORY";
201 case PTHDB_NOT_PTHREADED
: return "NOT_PTHREADED";
202 case PTHDB_SYMBOL
: return "SYMBOL";
203 case PTHDB_NOT_AVAIL
: return "NOT_AVAIL";
204 case PTHDB_INTERNAL
: return "INTERNAL";
205 default: return "UNKNOWN";
209 /* A call to ptrace(REQ, ID, ...) just returned RET. Check for
210 exceptional conditions and either return nonlocally or else return
211 1 for success and 0 for failure. */
214 ptrace_check (int req
, int id
, int ret
)
216 if (ret
== 0 && !errno
)
219 /* According to ptrace(2), ptrace may fail with EPERM if "the
220 Identifier parameter corresponds to a kernel thread which is
221 stopped in kernel mode and whose computational state cannot be
222 read or written." This happens quite often with register reads. */
229 if (ret
== -1 && errno
== EPERM
)
231 if (debug_aix_thread
)
232 fprintf_unfiltered (gdb_stdlog
,
233 "ptrace (%d, %d) = %d (errno = %d)\n",
234 req
, id
, ret
, errno
);
235 return ret
== -1 ? 0 : 1;
239 error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"),
240 req
, id
, ret
, errno
, safe_strerror (errno
));
241 return 0; /* Not reached. */
244 /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */
247 ptrace64aix (int req
, int id
, long long addr
, int data
, int *buf
)
250 return ptrace_check (req
, id
, ptracex (req
, id
, addr
, data
, buf
));
253 /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */
256 ptrace32 (int req
, int id
, int *addr
, int data
, int *buf
)
259 return ptrace_check (req
, id
,
260 ptrace (req
, id
, (int *) addr
, data
, buf
));
263 /* If *PIDP is a composite process/thread id, convert it to a
267 pid_to_prc (ptid_t
*ptidp
)
273 *ptidp
= pid_to_ptid (PIDGET (ptid
));
276 /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
277 the address of SYMBOLS[<i>].name. */
280 pdc_symbol_addrs (pthdb_user_t user
, pthdb_symbol_t
*symbols
, int count
)
282 struct minimal_symbol
*ms
;
286 if (debug_aix_thread
)
287 fprintf_unfiltered (gdb_stdlog
,
288 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
289 user
, (long) symbols
, count
);
291 for (i
= 0; i
< count
; i
++)
293 name
= symbols
[i
].name
;
294 if (debug_aix_thread
)
295 fprintf_unfiltered (gdb_stdlog
,
296 " symbols[%d].name = \"%s\"\n", i
, name
);
302 if (!(ms
= lookup_minimal_symbol (name
, NULL
, NULL
)))
304 if (debug_aix_thread
)
305 fprintf_unfiltered (gdb_stdlog
, " returning PDC_FAILURE\n");
308 symbols
[i
].addr
= SYMBOL_VALUE_ADDRESS (ms
);
310 if (debug_aix_thread
)
311 fprintf_unfiltered (gdb_stdlog
, " symbols[%d].addr = %s\n",
312 i
, hex_string (symbols
[i
].addr
));
314 if (debug_aix_thread
)
315 fprintf_unfiltered (gdb_stdlog
, " returning PDC_SUCCESS\n");
319 /* Read registers call back function should be able to read the
320 context information of a debuggee kernel thread from an active
321 process or from a core file. The information should be formatted
322 in context64 form for both 32-bit and 64-bit process.
323 If successful return 0, else non-zero is returned. */
326 pdc_read_regs (pthdb_user_t user
,
328 unsigned long long flags
,
329 pthdb_context_t
*context
)
331 /* This function doesn't appear to be used, so we could probably
332 just return 0 here. HOWEVER, if it is not defined, the OS will
333 complain and several thread debug functions will fail. In case
334 this is needed, I have implemented what I think it should do,
335 however this code is untested. */
337 uint64_t gprs64
[ppc_num_gprs
];
338 uint32_t gprs32
[ppc_num_gprs
];
339 double fprs
[ppc_num_fprs
];
340 struct ptxsprs sprs64
;
341 struct ptsprs sprs32
;
343 if (debug_aix_thread
)
344 fprintf_unfiltered (gdb_stdlog
, "pdc_read_regs tid=%d flags=%s\n",
345 (int) tid
, hex_string (flags
));
347 /* General-purpose registers. */
348 if (flags
& PTHDB_FLAG_GPRS
)
352 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
353 (unsigned long) gprs64
, 0, NULL
))
354 memset (gprs64
, 0, sizeof (gprs64
));
355 memcpy (context
->gpr
, gprs64
, sizeof(gprs64
));
359 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
360 memset (gprs32
, 0, sizeof (gprs32
));
361 memcpy (context
->gpr
, gprs32
, sizeof(gprs32
));
365 /* Floating-point registers. */
366 if (flags
& PTHDB_FLAG_FPRS
)
368 if (!ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
))
369 memset (fprs
, 0, sizeof (fprs
));
370 memcpy (context
->fpr
, fprs
, sizeof(fprs
));
373 /* Special-purpose registers. */
374 if (flags
& PTHDB_FLAG_SPRS
)
378 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
379 (unsigned long) &sprs64
, 0, NULL
))
380 memset (&sprs64
, 0, sizeof (sprs64
));
381 memcpy (&context
->msr
, &sprs64
, sizeof(sprs64
));
385 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
386 memset (&sprs32
, 0, sizeof (sprs32
));
387 memcpy (&context
->msr
, &sprs32
, sizeof(sprs32
));
393 /* Write register function should be able to write requested context
394 information to specified debuggee's kernel thread id.
395 If successful return 0, else non-zero is returned. */
398 pdc_write_regs (pthdb_user_t user
,
400 unsigned long long flags
,
401 pthdb_context_t
*context
)
403 /* This function doesn't appear to be used, so we could probably
404 just return 0 here. HOWEVER, if it is not defined, the OS will
405 complain and several thread debug functions will fail. In case
406 this is needed, I have implemented what I think it should do,
407 however this code is untested. */
409 if (debug_aix_thread
)
410 fprintf_unfiltered (gdb_stdlog
, "pdc_write_regs tid=%d flags=%s\n",
411 (int) tid
, hex_string (flags
));
413 /* General-purpose registers. */
414 if (flags
& PTHDB_FLAG_GPRS
)
417 ptrace64aix (PTT_WRITE_GPRS
, tid
,
418 (unsigned long) context
->gpr
, 0, NULL
);
420 ptrace32 (PTT_WRITE_GPRS
, tid
, (int *) context
->gpr
, 0, NULL
);
423 /* Floating-point registers. */
424 if (flags
& PTHDB_FLAG_FPRS
)
426 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) context
->fpr
, 0, NULL
);
429 /* Special-purpose registers. */
430 if (flags
& PTHDB_FLAG_SPRS
)
434 ptrace64aix (PTT_WRITE_SPRS
, tid
,
435 (unsigned long) &context
->msr
, 0, NULL
);
439 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &context
->msr
, 0, NULL
);
445 /* pthdb callback: read LEN bytes from process ADDR into BUF. */
448 pdc_read_data (pthdb_user_t user
, void *buf
,
449 pthdb_addr_t addr
, size_t len
)
453 if (debug_aix_thread
)
454 fprintf_unfiltered (gdb_stdlog
,
455 "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
456 user
, (long) buf
, hex_string (addr
), len
);
458 status
= target_read_memory (addr
, buf
, len
);
459 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
461 if (debug_aix_thread
)
462 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n",
463 status
, pd_status2str (ret
));
467 /* pthdb callback: write LEN bytes from BUF to process ADDR. */
470 pdc_write_data (pthdb_user_t user
, void *buf
,
471 pthdb_addr_t addr
, size_t len
)
475 if (debug_aix_thread
)
476 fprintf_unfiltered (gdb_stdlog
,
477 "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
478 user
, (long) buf
, hex_string (addr
), len
);
480 status
= target_write_memory (addr
, buf
, len
);
481 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
483 if (debug_aix_thread
)
484 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n", status
,
485 pd_status2str (ret
));
489 /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
493 pdc_alloc (pthdb_user_t user
, size_t len
, void **bufp
)
495 if (debug_aix_thread
)
496 fprintf_unfiltered (gdb_stdlog
,
497 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
498 user
, len
, (long) bufp
);
499 *bufp
= xmalloc (len
);
500 if (debug_aix_thread
)
501 fprintf_unfiltered (gdb_stdlog
,
502 " malloc returned 0x%lx\n", (long) *bufp
);
504 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
507 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
510 /* pthdb callback: reallocate BUF, which was allocated by the alloc or
511 realloc callback, so that it contains LEN bytes, and store a
512 pointer to the result in BUFP. */
515 pdc_realloc (pthdb_user_t user
, void *buf
, size_t len
, void **bufp
)
517 if (debug_aix_thread
)
518 fprintf_unfiltered (gdb_stdlog
,
519 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
520 user
, (long) buf
, len
, (long) bufp
);
521 *bufp
= xrealloc (buf
, len
);
522 if (debug_aix_thread
)
523 fprintf_unfiltered (gdb_stdlog
,
524 " realloc returned 0x%lx\n", (long) *bufp
);
525 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
528 /* pthdb callback: free BUF, which was allocated by the alloc or
532 pdc_dealloc (pthdb_user_t user
, void *buf
)
534 if (debug_aix_thread
)
535 fprintf_unfiltered (gdb_stdlog
,
536 "pdc_free (user = %ld, buf = 0x%lx)\n", user
,
542 /* Return a printable representation of pthread STATE. */
545 state2str (pthdb_state_t state
)
550 /* i18n: Like "Thread-Id %d, [state] idle" */
551 return _("idle"); /* being created */
553 /* i18n: Like "Thread-Id %d, [state] running" */
554 return _("running"); /* running */
556 /* i18n: Like "Thread-Id %d, [state] sleeping" */
557 return _("sleeping"); /* awaiting an event */
559 /* i18n: Like "Thread-Id %d, [state] ready" */
560 return _("ready"); /* runnable */
562 /* i18n: Like "Thread-Id %d, [state] finished" */
563 return _("finished"); /* awaiting a join/detach */
565 /* i18n: Like "Thread-Id %d, [state] unknown" */
570 /* qsort() comparison function for sorting pd_thread structs by pthid. */
573 pcmp (const void *p1v
, const void *p2v
)
575 struct pd_thread
*p1
= (struct pd_thread
*) p1v
;
576 struct pd_thread
*p2
= (struct pd_thread
*) p2v
;
577 return p1
->pthid
< p2
->pthid
? -1 : p1
->pthid
> p2
->pthid
;
580 /* iterate_over_threads() callback for counting GDB threads. */
583 giter_count (struct thread_info
*thread
, void *countp
)
589 /* iterate_over_threads() callback for accumulating GDB thread pids. */
592 giter_accum (struct thread_info
*thread
, void *bufp
)
594 **(struct thread_info
***) bufp
= thread
;
595 (*(struct thread_info
***) bufp
)++;
599 /* ptid comparison function */
602 ptid_cmp (ptid_t ptid1
, ptid_t ptid2
)
606 if (ptid_get_pid (ptid1
) < ptid_get_pid (ptid2
))
608 else if (ptid_get_pid (ptid1
) > ptid_get_pid (ptid2
))
610 else if (ptid_get_tid (ptid1
) < ptid_get_tid (ptid2
))
612 else if (ptid_get_tid (ptid1
) > ptid_get_tid (ptid2
))
614 else if (ptid_get_lwp (ptid1
) < ptid_get_lwp (ptid2
))
616 else if (ptid_get_lwp (ptid1
) > ptid_get_lwp (ptid2
))
622 /* qsort() comparison function for sorting thread_info structs by pid. */
625 gcmp (const void *t1v
, const void *t2v
)
627 struct thread_info
*t1
= *(struct thread_info
**) t1v
;
628 struct thread_info
*t2
= *(struct thread_info
**) t2v
;
629 return ptid_cmp (t1
->ptid
, t2
->ptid
);
632 /* Search through the list of all kernel threads for the thread
633 that has stopped on a SIGTRAP signal, and return its TID.
634 Return 0 if none found. */
637 get_signaled_thread (void)
639 struct thrdsinfo64 thrinf
;
640 pthdb_tid_t ktid
= 0;
643 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
644 extern int getthrds (pid_t
, struct thrdsinfo64
*,
645 int, pthdb_tid_t
*, int);
649 if (getthrds (PIDGET (inferior_ptid
), &thrinf
,
650 sizeof (thrinf
), &ktid
, 1) != 1)
653 if (thrinf
.ti_cursig
== SIGTRAP
)
654 return thrinf
.ti_tid
;
657 /* Didn't find any thread stopped on a SIGTRAP signal. */
661 /* Synchronize GDB's thread list with libpthdebug's.
663 There are some benefits of doing this every time the inferior stops:
665 - allows users to run thread-specific commands without needing to
666 run "info threads" first
668 - helps pthdb_tid_pthread() work properly (see "libpthdebug
669 peculiarities" at the top of this module)
671 - simplifies the demands placed on libpthdebug, which seems to
672 have difficulty with certain call patterns */
675 sync_threadlists (void)
677 int cmd
, status
, infpid
;
678 int pcount
, psize
, pi
, gcount
, gi
;
679 struct pd_thread
*pbuf
;
680 struct thread_info
**gbuf
, **g
, *thread
;
681 pthdb_pthread_t pdtid
;
685 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
689 pbuf
= (struct pd_thread
*) xmalloc (psize
* sizeof *pbuf
);
691 for (cmd
= PTHDB_LIST_FIRST
;; cmd
= PTHDB_LIST_NEXT
)
693 status
= pthdb_pthread (pd_session
, &pdtid
, cmd
);
694 if (status
!= PTHDB_SUCCESS
|| pdtid
== PTHDB_INVALID_PTHREAD
)
697 status
= pthdb_pthread_ptid (pd_session
, pdtid
, &pthid
);
698 if (status
!= PTHDB_SUCCESS
|| pthid
== PTHDB_INVALID_PTID
)
704 pbuf
= (struct pd_thread
*) xrealloc (pbuf
,
705 psize
* sizeof *pbuf
);
707 pbuf
[pcount
].pdtid
= pdtid
;
708 pbuf
[pcount
].pthid
= pthid
;
712 for (pi
= 0; pi
< pcount
; pi
++)
714 status
= pthdb_pthread_tid (pd_session
, pbuf
[pi
].pdtid
, &tid
);
715 if (status
!= PTHDB_SUCCESS
)
716 tid
= PTHDB_INVALID_TID
;
720 qsort (pbuf
, pcount
, sizeof *pbuf
, pcmp
);
722 /* Accumulate an array of GDB threads sorted by pid. */
725 iterate_over_threads (giter_count
, &gcount
);
726 g
= gbuf
= (struct thread_info
**) xmalloc (gcount
* sizeof *gbuf
);
727 iterate_over_threads (giter_accum
, &g
);
728 qsort (gbuf
, gcount
, sizeof *gbuf
, gcmp
);
730 /* Apply differences between the two arrays to GDB's thread list. */
732 infpid
= PIDGET (inferior_ptid
);
733 for (pi
= gi
= 0; pi
< pcount
|| gi
< gcount
;)
737 delete_thread (gbuf
[gi
]->ptid
);
740 else if (gi
== gcount
)
742 thread
= add_thread (BUILD_THREAD (pbuf
[pi
].pthid
, infpid
));
743 thread
->private = xmalloc (sizeof (struct private_thread_info
));
744 thread
->private->pdtid
= pbuf
[pi
].pdtid
;
745 thread
->private->tid
= pbuf
[pi
].tid
;
753 pptid
= BUILD_THREAD (pbuf
[pi
].pthid
, infpid
);
754 gptid
= gbuf
[gi
]->ptid
;
755 pdtid
= pbuf
[pi
].pdtid
;
758 cmp_result
= ptid_cmp (pptid
, gptid
);
762 gbuf
[gi
]->private->pdtid
= pdtid
;
763 gbuf
[gi
]->private->tid
= tid
;
767 else if (cmp_result
> 0)
769 delete_thread (gptid
);
774 thread
= add_thread (pptid
);
775 thread
->private = xmalloc (sizeof (struct private_thread_info
));
776 thread
->private->pdtid
= pdtid
;
777 thread
->private->tid
= tid
;
787 /* Iterate_over_threads() callback for locating a thread, using
788 the TID of its associated kernel thread. */
791 iter_tid (struct thread_info
*thread
, void *tidp
)
793 const pthdb_tid_t tid
= *(pthdb_tid_t
*)tidp
;
795 return (thread
->private->tid
== tid
);
798 /* Synchronize libpthdebug's state with the inferior and with GDB,
799 generate a composite process/thread <pid> for the current thread,
800 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
803 pd_update (int set_infpid
)
808 struct thread_info
*thread
= NULL
;
811 return inferior_ptid
;
813 status
= pthdb_session_update (pd_session
);
814 if (status
!= PTHDB_SUCCESS
)
815 return inferior_ptid
;
819 /* Define "current thread" as one that just received a trap signal. */
821 tid
= get_signaled_thread ();
823 thread
= iterate_over_threads (iter_tid
, &tid
);
825 ptid
= inferior_ptid
;
830 inferior_ptid
= ptid
;
835 /* Try to start debugging threads in the current process.
836 If successful and SET_INFPID, set inferior_ptid to reflect the
840 pd_activate (int set_infpid
)
844 status
= pthdb_session_init (PD_USER
, arch64
? PEM_64BIT
: PEM_32BIT
,
845 PTHDB_FLAG_REGS
, &pd_callbacks
,
847 if (status
!= PTHDB_SUCCESS
)
849 return inferior_ptid
;
852 return pd_update (set_infpid
);
855 /* Undo the effects of pd_activate(). */
862 pthdb_session_destroy (pd_session
);
864 pid_to_prc (&inferior_ptid
);
868 /* An object file has just been loaded. Check whether the current
869 application is pthreaded, and if so, prepare for thread debugging. */
876 struct minimal_symbol
*ms
;
878 /* Don't initialize twice. */
882 /* Check application word size. */
883 arch64
= register_size (current_gdbarch
, 0) == 8;
885 /* Check whether the application is pthreaded. */
887 status
= pthdb_session_pthreaded (PD_USER
, PTHDB_FLAG_REGS
,
888 &pd_callbacks
, &stub_name
);
889 if ((status
!= PTHDB_SUCCESS
&&
890 status
!= PTHDB_NOT_PTHREADED
) || !stub_name
)
893 /* Set a breakpoint on the returned stub function. */
894 if (!(ms
= lookup_minimal_symbol (stub_name
, NULL
, NULL
)))
896 pd_brk_addr
= SYMBOL_VALUE_ADDRESS (ms
);
897 if (!create_thread_event_breakpoint (pd_brk_addr
))
900 /* Prepare for thread debugging. */
901 base_target
= current_target
;
902 push_target (&aix_thread_ops
);
905 /* If we're debugging a core file or an attached inferior, the
906 pthread library may already have been initialized, so try to
907 activate thread debugging. */
911 /* Undo the effects of pd_enable(). */
921 unpush_target (&aix_thread_ops
);
924 /* new_objfile observer callback.
926 If OBJFILE is non-null, check whether a threaded application is
927 being debugged, and if so, prepare for thread debugging.
929 If OBJFILE is null, stop debugging threads. */
932 new_objfile (struct objfile
*objfile
)
940 /* Attach to process specified by ARGS. */
943 aix_thread_attach (char *args
, int from_tty
)
945 base_target
.to_attach (args
, from_tty
);
949 /* Detach from the process attached to by aix_thread_attach(). */
952 aix_thread_detach (char *args
, int from_tty
)
955 base_target
.to_detach (args
, from_tty
);
958 /* Tell the inferior process to continue running thread PID if != -1
959 and all threads otherwise. */
962 aix_thread_resume (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 (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
), (int *) tid
);
991 ptrace32 (PTT_CONTINUE
, tid
[0], (int *) 1,
992 target_signal_to_host (sig
), (int *) 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 (ptid_t ptid
, struct target_waitstatus
*status
)
1003 struct cleanup
*cleanup
= save_inferior_ptid ();
1007 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1008 ptid
= base_target
.to_wait (ptid
, status
);
1009 do_cleanups (cleanup
);
1011 if (PIDGET (ptid
) == -1)
1012 return pid_to_ptid (-1);
1014 /* Check whether libpthdebug might be ready to be initialized. */
1015 if (!pd_active
&& status
->kind
== TARGET_WAITKIND_STOPPED
&&
1016 status
->value
.sig
== TARGET_SIGNAL_TRAP
1017 && read_pc_pid (ptid
)
1018 - gdbarch_decr_pc_after_break (current_gdbarch
) == pd_brk_addr
)
1019 return pd_activate (0);
1021 return pd_update (0);
1024 /* Record that the 64-bit general-purpose registers contain VALS. */
1027 supply_gprs64 (struct regcache
*regcache
, uint64_t *vals
)
1029 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1032 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1033 regcache_raw_supply (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1034 (char *) (vals
+ regno
));
1037 /* Record that 32-bit register REGNO contains VAL. */
1040 supply_reg32 (struct regcache
*regcache
, int regno
, uint32_t val
)
1042 regcache_raw_supply (regcache
, regno
, (char *) &val
);
1045 /* Record that the floating-point registers contain VALS. */
1048 supply_fprs (struct regcache
*regcache
, double *vals
)
1050 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1053 /* This function should never be called on architectures without
1054 floating-point registers. */
1055 gdb_assert (ppc_floating_point_unit_p (current_gdbarch
));
1057 for (regno
= 0; regno
< ppc_num_fprs
; regno
++)
1058 regcache_raw_supply (regcache
, regno
+ tdep
->ppc_fp0_regnum
,
1059 (char *) (vals
+ regno
));
1062 /* Predicate to test whether given register number is a "special" register. */
1064 special_register_p (int regno
)
1066 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1068 return regno
== PC_REGNUM
1069 || regno
== tdep
->ppc_ps_regnum
1070 || regno
== tdep
->ppc_cr_regnum
1071 || regno
== tdep
->ppc_lr_regnum
1072 || regno
== tdep
->ppc_ctr_regnum
1073 || regno
== tdep
->ppc_xer_regnum
1074 || (tdep
->ppc_fpscr_regnum
>= 0 && regno
== tdep
->ppc_fpscr_regnum
)
1075 || (tdep
->ppc_mq_regnum
>= 0 && regno
== tdep
->ppc_mq_regnum
);
1079 /* Record that the special registers contain the specified 64-bit and
1083 supply_sprs64 (struct regcache
*regcache
,
1084 uint64_t iar
, uint64_t msr
, uint32_t cr
,
1085 uint64_t lr
, uint64_t ctr
, uint32_t xer
,
1088 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1090 regcache_raw_supply (regcache
, PC_REGNUM
, (char *) &iar
);
1091 regcache_raw_supply (regcache
, tdep
->ppc_ps_regnum
, (char *) &msr
);
1092 regcache_raw_supply (regcache
, tdep
->ppc_cr_regnum
, (char *) &cr
);
1093 regcache_raw_supply (regcache
, tdep
->ppc_lr_regnum
, (char *) &lr
);
1094 regcache_raw_supply (regcache
, tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1095 regcache_raw_supply (regcache
, tdep
->ppc_xer_regnum
, (char *) &xer
);
1096 if (tdep
->ppc_fpscr_regnum
>= 0)
1097 regcache_raw_supply (regcache
, tdep
->ppc_fpscr_regnum
,
1101 /* Record that the special registers contain the specified 32-bit
1105 supply_sprs32 (struct regcache
*regcache
,
1106 uint32_t iar
, uint32_t msr
, uint32_t cr
,
1107 uint32_t lr
, uint32_t ctr
, uint32_t xer
,
1110 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1112 regcache_raw_supply (regcache
, PC_REGNUM
, (char *) &iar
);
1113 regcache_raw_supply (regcache
, tdep
->ppc_ps_regnum
, (char *) &msr
);
1114 regcache_raw_supply (regcache
, tdep
->ppc_cr_regnum
, (char *) &cr
);
1115 regcache_raw_supply (regcache
, tdep
->ppc_lr_regnum
, (char *) &lr
);
1116 regcache_raw_supply (regcache
, tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1117 regcache_raw_supply (regcache
, tdep
->ppc_xer_regnum
, (char *) &xer
);
1118 if (tdep
->ppc_fpscr_regnum
>= 0)
1119 regcache_raw_supply (regcache
, tdep
->ppc_fpscr_regnum
,
1123 /* Fetch all registers from pthread PDTID, which doesn't have a kernel
1126 There's no way to query a single register from a non-kernel
1127 pthread, so there's no need for a single-register version of this
1131 fetch_regs_user_thread (struct regcache
*regcache
, pthdb_pthread_t pdtid
)
1133 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1135 pthdb_context_t ctx
;
1137 if (debug_aix_thread
)
1138 fprintf_unfiltered (gdb_stdlog
,
1139 "fetch_regs_user_thread %lx\n", (long) pdtid
);
1140 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1141 if (status
!= PTHDB_SUCCESS
)
1142 error (_("aix-thread: fetch_registers: pthdb_pthread_context returned %s"),
1143 pd_status2str (status
));
1145 /* General-purpose registers. */
1148 supply_gprs64 (regcache
, ctx
.gpr
);
1150 for (i
= 0; i
< ppc_num_gprs
; i
++)
1151 supply_reg32 (regcache
, tdep
->ppc_gp0_regnum
+ i
, ctx
.gpr
[i
]);
1153 /* Floating-point registers. */
1155 if (ppc_floating_point_unit_p (current_gdbarch
))
1156 supply_fprs (regcache
, ctx
.fpr
);
1158 /* Special registers. */
1161 supply_sprs64 (regcache
, ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
,
1162 ctx
.xer
, ctx
.fpscr
);
1164 supply_sprs32 (regcache
, ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
,
1165 ctx
.xer
, ctx
.fpscr
);
1168 /* Fetch register REGNO if != -1 or all registers otherwise from
1171 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1172 SPRs, but there's no way to query individual registers within those
1173 groups. Therefore, if REGNO != -1, this function fetches an entire
1176 Unfortunately, kernel thread register queries often fail with
1177 EPERM, indicating that the thread is in kernel space. This breaks
1178 backtraces of threads other than the current one. To make that
1179 breakage obvious without throwing an error to top level (which is
1180 bad e.g. during "info threads" output), zero registers that can't
1184 fetch_regs_kernel_thread (struct regcache
*regcache
, int regno
,
1187 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1188 uint64_t gprs64
[ppc_num_gprs
];
1189 uint32_t gprs32
[ppc_num_gprs
];
1190 double fprs
[ppc_num_fprs
];
1191 struct ptxsprs sprs64
;
1192 struct ptsprs sprs32
;
1195 if (debug_aix_thread
)
1196 fprintf_unfiltered (gdb_stdlog
,
1197 "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
1198 (long) tid
, regno
, arch64
);
1200 /* General-purpose registers. */
1202 || (tdep
->ppc_gp0_regnum
<= regno
1203 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_gprs
))
1207 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
1208 (unsigned long) gprs64
, 0, NULL
))
1209 memset (gprs64
, 0, sizeof (gprs64
));
1210 supply_gprs64 (regcache
, gprs64
);
1214 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
1215 memset (gprs32
, 0, sizeof (gprs32
));
1216 for (i
= 0; i
< ppc_num_gprs
; i
++)
1217 supply_reg32 (regcache
, tdep
->ppc_gp0_regnum
+ i
, gprs32
[i
]);
1221 /* Floating-point registers. */
1223 if (ppc_floating_point_unit_p (current_gdbarch
)
1225 || (regno
>= tdep
->ppc_fp0_regnum
1226 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1228 if (!ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
))
1229 memset (fprs
, 0, sizeof (fprs
));
1230 supply_fprs (regcache
, fprs
);
1233 /* Special-purpose registers. */
1235 if (regno
== -1 || special_register_p (regno
))
1239 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
1240 (unsigned long) &sprs64
, 0, NULL
))
1241 memset (&sprs64
, 0, sizeof (sprs64
));
1242 supply_sprs64 (regcache
, sprs64
.pt_iar
, sprs64
.pt_msr
,
1243 sprs64
.pt_cr
, sprs64
.pt_lr
, sprs64
.pt_ctr
,
1244 sprs64
.pt_xer
, sprs64
.pt_fpscr
);
1248 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1250 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
1251 memset (&sprs32
, 0, sizeof (sprs32
));
1252 supply_sprs32 (regcache
, sprs32
.pt_iar
, sprs32
.pt_msr
, sprs32
.pt_cr
,
1253 sprs32
.pt_lr
, sprs32
.pt_ctr
, sprs32
.pt_xer
,
1256 if (tdep
->ppc_mq_regnum
>= 0)
1257 regcache_raw_supply (regcache
, tdep
->ppc_mq_regnum
,
1258 (char *) &sprs32
.pt_mq
);
1263 /* Fetch register REGNO if != -1 or all registers otherwise in the
1264 thread/process specified by inferior_ptid. */
1267 aix_thread_fetch_registers (struct regcache
*regcache
, int regno
)
1269 struct thread_info
*thread
;
1272 if (!PD_TID (inferior_ptid
))
1273 base_target
.to_fetch_registers (regcache
, regno
);
1276 thread
= find_thread_pid (inferior_ptid
);
1277 tid
= thread
->private->tid
;
1279 if (tid
== PTHDB_INVALID_TID
)
1280 fetch_regs_user_thread (regcache
, thread
->private->pdtid
);
1282 fetch_regs_kernel_thread (regcache
, regno
, tid
);
1286 /* Store the gp registers into an array of uint32_t or uint64_t. */
1289 fill_gprs64 (const struct regcache
*regcache
, uint64_t *vals
)
1291 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1294 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1295 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ regno
))
1296 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1301 fill_gprs32 (const struct regcache
*regcache
, uint32_t *vals
)
1303 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1306 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1307 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ regno
))
1308 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1312 /* Store the floating point registers into a double array. */
1314 fill_fprs (const struct regcache
*regcache
, double *vals
)
1316 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1319 /* This function should never be called on architectures without
1320 floating-point registers. */
1321 gdb_assert (ppc_floating_point_unit_p (current_gdbarch
));
1323 for (regno
= tdep
->ppc_fp0_regnum
;
1324 regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
;
1326 if (regcache_valid_p (regcache
, regno
))
1327 regcache_raw_collect (regcache
, regno
, vals
+ regno
);
1330 /* Store the special registers into the specified 64-bit and 32-bit
1334 fill_sprs64 (const struct regcache
*regcache
,
1335 uint64_t *iar
, uint64_t *msr
, uint32_t *cr
,
1336 uint64_t *lr
, uint64_t *ctr
, uint32_t *xer
,
1339 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1341 /* Verify that the size of the size of the IAR buffer is the
1342 same as the raw size of the PC (in the register cache). If
1343 they're not, then either GDB has been built incorrectly, or
1344 there's some other kind of internal error. To be really safe,
1345 we should check all of the sizes. */
1346 gdb_assert (sizeof (*iar
) == register_size (current_gdbarch
, PC_REGNUM
));
1348 if (regcache_valid_p (regcache
, PC_REGNUM
))
1349 regcache_raw_collect (regcache
, PC_REGNUM
, iar
);
1350 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1351 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1352 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1353 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1354 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1355 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1356 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1357 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1358 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1359 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1360 if (tdep
->ppc_fpscr_regnum
>= 0
1361 && regcache_valid_p (regcache
, tdep
->ppc_fpscr_regnum
))
1362 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1366 fill_sprs32 (const struct regcache
*regcache
,
1367 uint32_t *iar
, uint32_t *msr
, uint32_t *cr
,
1368 uint32_t *lr
, uint32_t *ctr
, uint32_t *xer
,
1371 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1373 /* Verify that the size of the size of the IAR buffer is the
1374 same as the raw size of the PC (in the register cache). If
1375 they're not, then either GDB has been built incorrectly, or
1376 there's some other kind of internal error. To be really safe,
1377 we should check all of the sizes. */
1378 gdb_assert (sizeof (*iar
) == register_size (current_gdbarch
, PC_REGNUM
));
1380 if (regcache_valid_p (regcache
, PC_REGNUM
))
1381 regcache_raw_collect (regcache
, PC_REGNUM
, iar
);
1382 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1383 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1384 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1385 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1386 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1387 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1388 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1389 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1390 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1391 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1392 if (tdep
->ppc_fpscr_regnum
>= 0
1393 && regcache_valid_p (regcache
, tdep
->ppc_fpscr_regnum
))
1394 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1397 /* Store all registers into pthread PDTID, which doesn't have a kernel
1400 It's possible to store a single register into a non-kernel pthread,
1401 but I doubt it's worth the effort. */
1404 store_regs_user_thread (const struct regcache
*regcache
, pthdb_pthread_t pdtid
)
1406 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1408 pthdb_context_t ctx
;
1413 if (debug_aix_thread
)
1414 fprintf_unfiltered (gdb_stdlog
,
1415 "store_regs_user_thread %lx\n", (long) pdtid
);
1417 /* Retrieve the thread's current context for its non-register
1419 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1420 if (status
!= PTHDB_SUCCESS
)
1421 error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"),
1422 pd_status2str (status
));
1424 /* Collect general-purpose register values from the regcache. */
1426 for (i
= 0; i
< ppc_num_gprs
; i
++)
1427 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ i
))
1431 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1437 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1443 /* Collect floating-point register values from the regcache. */
1444 if (ppc_floating_point_unit_p (current_gdbarch
))
1445 fill_fprs (regcache
, ctx
.fpr
);
1447 /* Special registers (always kept in ctx as 64 bits). */
1450 fill_sprs64 (regcache
, &ctx
.iar
, &ctx
.msr
, &ctx
.cr
, &ctx
.lr
, &ctx
.ctr
,
1451 &ctx
.xer
, &ctx
.fpscr
);
1455 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1456 Solution: use 32-bit temp variables. */
1457 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1460 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
, &tmp_ctr
,
1461 &tmp_xer
, &tmp_fpscr
);
1462 if (regcache_valid_p (regcache
, PC_REGNUM
))
1464 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1466 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1468 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1470 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1472 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1474 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1475 ctx
.fpscr
= tmp_fpscr
;
1478 status
= pthdb_pthread_setcontext (pd_session
, pdtid
, &ctx
);
1479 if (status
!= PTHDB_SUCCESS
)
1480 error (_("aix-thread: store_registers: pthdb_pthread_setcontext returned %s"),
1481 pd_status2str (status
));
1484 /* Store register REGNO if != -1 or all registers otherwise into
1487 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1488 SPRs, but there's no way to set individual registers within those
1489 groups. Therefore, if REGNO != -1, this function stores an entire
1493 store_regs_kernel_thread (const struct regcache
*regcache
, int regno
,
1496 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1497 uint64_t gprs64
[ppc_num_gprs
];
1498 uint32_t gprs32
[ppc_num_gprs
];
1499 double fprs
[ppc_num_fprs
];
1500 struct ptxsprs sprs64
;
1501 struct ptsprs sprs32
;
1504 if (debug_aix_thread
)
1505 fprintf_unfiltered (gdb_stdlog
,
1506 "store_regs_kernel_thread tid=%lx regno=%d\n",
1509 /* General-purpose registers. */
1511 || (tdep
->ppc_gp0_regnum
<= regno
1512 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_fprs
))
1516 /* Pre-fetch: some regs may not be in the cache. */
1517 ptrace64aix (PTT_READ_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1518 fill_gprs64 (regcache
, gprs64
);
1519 ptrace64aix (PTT_WRITE_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1523 /* Pre-fetch: some regs may not be in the cache. */
1524 ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
);
1525 fill_gprs32 (regcache
, gprs32
);
1526 ptrace32 (PTT_WRITE_GPRS
, tid
, gprs32
, 0, NULL
);
1530 /* Floating-point registers. */
1532 if (ppc_floating_point_unit_p (current_gdbarch
)
1534 || (regno
>= tdep
->ppc_fp0_regnum
1535 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1537 /* Pre-fetch: some regs may not be in the cache. */
1538 ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1539 fill_fprs (regcache
, fprs
);
1540 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1543 /* Special-purpose registers. */
1545 if (regno
== -1 || special_register_p (regno
))
1549 /* Pre-fetch: some registers won't be in the cache. */
1550 ptrace64aix (PTT_READ_SPRS
, tid
,
1551 (unsigned long) &sprs64
, 0, NULL
);
1552 fill_sprs64 (regcache
, &sprs64
.pt_iar
, &sprs64
.pt_msr
,
1553 &sprs64
.pt_cr
, &sprs64
.pt_lr
, &sprs64
.pt_ctr
,
1554 &sprs64
.pt_xer
, &sprs64
.pt_fpscr
);
1555 ptrace64aix (PTT_WRITE_SPRS
, tid
,
1556 (unsigned long) &sprs64
, 0, NULL
);
1560 /* The contents of "struct ptspr" were declared as "unsigned
1561 long" up to AIX 5.2, but are "unsigned int" since 5.3.
1562 Use temporaries to work around this problem. Also, add an
1563 assert here to make sure we fail if the system header files
1564 use "unsigned long", and the size of that type is not what
1565 the headers expect. */
1566 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1569 gdb_assert (sizeof (sprs32
.pt_iar
) == 4);
1571 /* Pre-fetch: some registers won't be in the cache. */
1572 ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1574 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
,
1575 &tmp_ctr
, &tmp_xer
, &tmp_fpscr
);
1577 sprs32
.pt_iar
= tmp_iar
;
1578 sprs32
.pt_msr
= tmp_msr
;
1579 sprs32
.pt_cr
= tmp_cr
;
1580 sprs32
.pt_lr
= tmp_lr
;
1581 sprs32
.pt_ctr
= tmp_ctr
;
1582 sprs32
.pt_xer
= tmp_xer
;
1583 sprs32
.pt_fpscr
= tmp_fpscr
;
1585 if (tdep
->ppc_mq_regnum
>= 0)
1586 if (regcache_valid_p (regcache
, tdep
->ppc_mq_regnum
))
1587 regcache_raw_collect (regcache
, tdep
->ppc_mq_regnum
,
1590 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1595 /* Store gdb's current view of the register set into the
1596 thread/process specified by inferior_ptid. */
1599 aix_thread_store_registers (struct regcache
*regcache
, int regno
)
1601 struct thread_info
*thread
;
1604 if (!PD_TID (inferior_ptid
))
1605 base_target
.to_store_registers (regcache
, regno
);
1608 thread
= find_thread_pid (inferior_ptid
);
1609 tid
= thread
->private->tid
;
1611 if (tid
== PTHDB_INVALID_TID
)
1612 store_regs_user_thread (regcache
, thread
->private->pdtid
);
1614 store_regs_kernel_thread (regcache
, regno
, tid
);
1618 /* Attempt a transfer all LEN bytes starting at OFFSET between the
1619 inferior's OBJECT:ANNEX space and GDB's READBUF/WRITEBUF buffer.
1620 Return the number of bytes actually transferred. */
1623 aix_thread_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1624 const char *annex
, gdb_byte
*readbuf
,
1625 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1627 struct cleanup
*old_chain
= save_inferior_ptid ();
1630 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1631 xfer
= base_target
.to_xfer_partial (ops
, object
, annex
,
1632 readbuf
, writebuf
, offset
, len
);
1634 do_cleanups (old_chain
);
1638 /* Kill and forget about the inferior process. */
1641 aix_thread_kill (void)
1643 struct cleanup
*cleanup
= save_inferior_ptid ();
1645 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1646 base_target
.to_kill ();
1647 do_cleanups (cleanup
);
1650 /* Clean up after the inferior exits. */
1653 aix_thread_mourn_inferior (void)
1656 base_target
.to_mourn_inferior ();
1659 /* Return whether thread PID is still valid. */
1662 aix_thread_thread_alive (ptid_t ptid
)
1665 return base_target
.to_thread_alive (ptid
);
1667 /* We update the thread list every time the child stops, so all
1668 valid threads should be in the thread list. */
1669 return in_thread_list (ptid
);
1672 /* Return a printable representation of composite PID for use in
1673 "info threads" output. */
1676 aix_thread_pid_to_str (ptid_t ptid
)
1678 static char *ret
= NULL
;
1681 return base_target
.to_pid_to_str (ptid
);
1683 /* Free previous return value; a new one will be allocated by
1687 ret
= xstrprintf (_("Thread %ld"), ptid_get_tid (ptid
));
1691 /* Return a printable representation of extra information about
1692 THREAD, for use in "info threads" output. */
1695 aix_thread_extra_thread_info (struct thread_info
*thread
)
1697 struct ui_file
*buf
;
1699 pthdb_pthread_t pdtid
;
1701 pthdb_state_t state
;
1702 pthdb_suspendstate_t suspendstate
;
1703 pthdb_detachstate_t detachstate
;
1706 static char *ret
= NULL
;
1708 if (!PD_TID (thread
->ptid
))
1711 buf
= mem_fileopen ();
1713 pdtid
= thread
->private->pdtid
;
1714 tid
= thread
->private->tid
;
1716 if (tid
!= PTHDB_INVALID_TID
)
1717 /* i18n: Like "thread-identifier %d, [state] running, suspended" */
1718 fprintf_unfiltered (buf
, _("tid %d"), (int)tid
);
1720 status
= pthdb_pthread_state (pd_session
, pdtid
, &state
);
1721 if (status
!= PTHDB_SUCCESS
)
1723 fprintf_unfiltered (buf
, ", %s", state2str (state
));
1725 status
= pthdb_pthread_suspendstate (pd_session
, pdtid
,
1727 if (status
== PTHDB_SUCCESS
&& suspendstate
== PSS_SUSPENDED
)
1728 /* i18n: Like "Thread-Id %d, [state] running, suspended" */
1729 fprintf_unfiltered (buf
, _(", suspended"));
1731 status
= pthdb_pthread_detachstate (pd_session
, pdtid
,
1733 if (status
== PTHDB_SUCCESS
&& detachstate
== PDS_DETACHED
)
1734 /* i18n: Like "Thread-Id %d, [state] running, detached" */
1735 fprintf_unfiltered (buf
, _(", detached"));
1737 pthdb_pthread_cancelpend (pd_session
, pdtid
, &cancelpend
);
1738 if (status
== PTHDB_SUCCESS
&& cancelpend
)
1739 /* i18n: Like "Thread-Id %d, [state] running, cancel pending" */
1740 fprintf_unfiltered (buf
, _(", cancel pending"));
1742 ui_file_write (buf
, "", 1);
1744 xfree (ret
); /* Free old buffer. */
1746 ret
= ui_file_xstrdup (buf
, &length
);
1747 ui_file_delete (buf
);
1752 /* Initialize target aix_thread_ops. */
1755 init_aix_thread_ops (void)
1757 aix_thread_ops
.to_shortname
= "aix-threads";
1758 aix_thread_ops
.to_longname
= _("AIX pthread support");
1759 aix_thread_ops
.to_doc
= _("AIX pthread support");
1761 aix_thread_ops
.to_attach
= aix_thread_attach
;
1762 aix_thread_ops
.to_detach
= aix_thread_detach
;
1763 aix_thread_ops
.to_resume
= aix_thread_resume
;
1764 aix_thread_ops
.to_wait
= aix_thread_wait
;
1765 aix_thread_ops
.to_fetch_registers
= aix_thread_fetch_registers
;
1766 aix_thread_ops
.to_store_registers
= aix_thread_store_registers
;
1767 aix_thread_ops
.to_xfer_partial
= aix_thread_xfer_partial
;
1768 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1769 debugging when the inferior reaches pd_brk_addr. */
1770 aix_thread_ops
.to_kill
= aix_thread_kill
;
1771 aix_thread_ops
.to_mourn_inferior
= aix_thread_mourn_inferior
;
1772 aix_thread_ops
.to_thread_alive
= aix_thread_thread_alive
;
1773 aix_thread_ops
.to_pid_to_str
= aix_thread_pid_to_str
;
1774 aix_thread_ops
.to_extra_thread_info
= aix_thread_extra_thread_info
;
1775 aix_thread_ops
.to_stratum
= thread_stratum
;
1776 aix_thread_ops
.to_magic
= OPS_MAGIC
;
1779 /* Module startup initialization function, automagically called by
1783 _initialize_aix_thread (void)
1785 init_aix_thread_ops ();
1786 add_target (&aix_thread_ops
);
1788 /* Notice when object files get loaded and unloaded. */
1789 observer_attach_new_objfile (new_objfile
);
1791 add_setshow_boolean_cmd ("aix-thread", class_maintenance
, &debug_aix_thread
,
1792 _("Set debugging of AIX thread module."),
1793 _("Show debugging of AIX thread module."),
1794 _("Enables debugging output (used to debug GDB)."),
1795 NULL
, NULL
, /* FIXME: i18n: Debugging of AIX thread module is \"%d\". */
1796 &setdebuglist
, &showdebuglist
);