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 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* This module uses the libpthdebug.a library provided by AIX 4.3+ for
23 debugging pthread applications.
25 Some name prefix conventions:
26 pthdb_ provided by libpthdebug.a
27 pdc_ callbacks that this module provides to libpthdebug.a
28 pd_ variables or functions interfacing with libpthdebug.a
30 libpthdebug peculiarities:
32 - pthdb_ptid_pthread() is prototyped in <sys/pthdebug.h>, but
33 it's not documented, and after several calls it stops working
34 and causes other libpthdebug functions to fail.
36 - pthdb_tid_pthread() doesn't always work after
37 pthdb_session_update(), but it does work after cycling through
38 all threads using pthdb_pthread().
43 #include "gdb_assert.h"
44 #include "gdbthread.h"
50 #include "gdb_string.h"
54 #include <sys/types.h>
55 #include <sys/ptrace.h>
58 #include <sys/pthdebug.h>
60 /* Whether to emit debugging output. */
61 static int debug_aix_thread
;
63 /* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */
64 #ifndef PTHDB_VERSION_3
65 #define pthdb_tid_t tid_t
68 /* Return whether to treat PID as a debuggable thread id. */
70 #define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0)
72 /* Build a thread ptid. */
73 #define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID)
75 /* Build and lwp ptid. */
76 #define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP)
78 /* pthdb_user_t value that we pass to pthdb functions. 0 causes
79 PTHDB_BAD_USER errors, so use 1. */
83 /* Success and failure values returned by pthdb callbacks. */
85 #define PDC_SUCCESS PTHDB_SUCCESS
86 #define PDC_FAILURE PTHDB_CALLBACK
88 /* Private data attached to each element in GDB's thread list. */
90 struct private_thread_info
{
91 pthdb_pthread_t pdtid
; /* thread's libpthdebug id */
92 pthdb_tid_t tid
; /* kernel thread id */
95 /* Information about a thread of which libpthdebug is aware. */
98 pthdb_pthread_t pdtid
;
103 /* This module's target-specific operations, active while pd_able is true. */
105 static struct target_ops aix_thread_ops
;
107 /* Copy of the target over which ops is pushed. This is more
108 convenient than a pointer to deprecated_child_ops or core_ops,
109 because they lack current_target's default callbacks. */
111 static struct target_ops base_target
;
113 /* Address of the function that libpthread will call when libpthdebug
114 is ready to be initialized. */
116 static CORE_ADDR pd_brk_addr
;
118 /* Whether the current application is debuggable by pthdb. */
120 static int pd_able
= 0;
122 /* Whether a threaded application is being debugged. */
124 static int pd_active
= 0;
126 /* Whether the current architecture is 64-bit.
127 Only valid when pd_able is true. */
131 /* Forward declarations for pthdb callbacks. */
133 static int pdc_symbol_addrs (pthdb_user_t
, pthdb_symbol_t
*, int);
134 static int pdc_read_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
135 static int pdc_write_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
136 static int pdc_read_regs (pthdb_user_t user
, pthdb_tid_t tid
,
137 unsigned long long flags
,
138 pthdb_context_t
*context
);
139 static int pdc_write_regs (pthdb_user_t user
, pthdb_tid_t tid
,
140 unsigned long long flags
,
141 pthdb_context_t
*context
);
142 static int pdc_alloc (pthdb_user_t
, size_t, void **);
143 static int pdc_realloc (pthdb_user_t
, void *, size_t, void **);
144 static int pdc_dealloc (pthdb_user_t
, void *);
146 /* pthdb callbacks. */
148 static pthdb_callbacks_t pd_callbacks
= {
160 /* Current pthdb session. */
162 static pthdb_session_t pd_session
;
164 /* Return a printable representation of pthdebug function return
168 pd_status2str (int status
)
172 case PTHDB_SUCCESS
: return "SUCCESS";
173 case PTHDB_NOSYS
: return "NOSYS";
174 case PTHDB_NOTSUP
: return "NOTSUP";
175 case PTHDB_BAD_VERSION
: return "BAD_VERSION";
176 case PTHDB_BAD_USER
: return "BAD_USER";
177 case PTHDB_BAD_SESSION
: return "BAD_SESSION";
178 case PTHDB_BAD_MODE
: return "BAD_MODE";
179 case PTHDB_BAD_FLAGS
: return "BAD_FLAGS";
180 case PTHDB_BAD_CALLBACK
: return "BAD_CALLBACK";
181 case PTHDB_BAD_POINTER
: return "BAD_POINTER";
182 case PTHDB_BAD_CMD
: return "BAD_CMD";
183 case PTHDB_BAD_PTHREAD
: return "BAD_PTHREAD";
184 case PTHDB_BAD_ATTR
: return "BAD_ATTR";
185 case PTHDB_BAD_MUTEX
: return "BAD_MUTEX";
186 case PTHDB_BAD_MUTEXATTR
: return "BAD_MUTEXATTR";
187 case PTHDB_BAD_COND
: return "BAD_COND";
188 case PTHDB_BAD_CONDATTR
: return "BAD_CONDATTR";
189 case PTHDB_BAD_RWLOCK
: return "BAD_RWLOCK";
190 case PTHDB_BAD_RWLOCKATTR
: return "BAD_RWLOCKATTR";
191 case PTHDB_BAD_KEY
: return "BAD_KEY";
192 case PTHDB_BAD_PTID
: return "BAD_PTID";
193 case PTHDB_BAD_TID
: return "BAD_TID";
194 case PTHDB_CALLBACK
: return "CALLBACK";
195 case PTHDB_CONTEXT
: return "CONTEXT";
196 case PTHDB_HELD
: return "HELD";
197 case PTHDB_NOT_HELD
: return "NOT_HELD";
198 case PTHDB_MEMORY
: return "MEMORY";
199 case PTHDB_NOT_PTHREADED
: return "NOT_PTHREADED";
200 case PTHDB_SYMBOL
: return "SYMBOL";
201 case PTHDB_NOT_AVAIL
: return "NOT_AVAIL";
202 case PTHDB_INTERNAL
: return "INTERNAL";
203 default: return "UNKNOWN";
207 /* A call to ptrace(REQ, ID, ...) just returned RET. Check for
208 exceptional conditions and either return nonlocally or else return
209 1 for success and 0 for failure. */
212 ptrace_check (int req
, int id
, int ret
)
214 if (ret
== 0 && !errno
)
217 /* According to ptrace(2), ptrace may fail with EPERM if "the
218 Identifier parameter corresponds to a kernel thread which is
219 stopped in kernel mode and whose computational state cannot be
220 read or written." This happens quite often with register reads. */
227 if (ret
== -1 && errno
== EPERM
)
229 if (debug_aix_thread
)
230 fprintf_unfiltered (gdb_stdlog
,
231 "ptrace (%d, %d) = %d (errno = %d)\n",
232 req
, id
, ret
, errno
);
233 return ret
== -1 ? 0 : 1;
237 error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"),
238 req
, id
, ret
, errno
, safe_strerror (errno
));
239 return 0; /* Not reached. */
242 /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */
245 ptrace64aix (int req
, int id
, long long addr
, int data
, int *buf
)
248 return ptrace_check (req
, id
, ptracex (req
, id
, addr
, data
, buf
));
251 /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */
254 ptrace32 (int req
, int id
, int *addr
, int data
, int *buf
)
257 return ptrace_check (req
, id
,
258 ptrace (req
, id
, (int *) addr
, data
, buf
));
261 /* If *PIDP is a composite process/thread id, convert it to a
265 pid_to_prc (ptid_t
*ptidp
)
271 *ptidp
= pid_to_ptid (PIDGET (ptid
));
274 /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
275 the address of SYMBOLS[<i>].name. */
278 pdc_symbol_addrs (pthdb_user_t user
, pthdb_symbol_t
*symbols
, int count
)
280 struct minimal_symbol
*ms
;
284 if (debug_aix_thread
)
285 fprintf_unfiltered (gdb_stdlog
,
286 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
287 user
, (long) symbols
, count
);
289 for (i
= 0; i
< count
; i
++)
291 name
= symbols
[i
].name
;
292 if (debug_aix_thread
)
293 fprintf_unfiltered (gdb_stdlog
,
294 " symbols[%d].name = \"%s\"\n", i
, name
);
300 if (!(ms
= lookup_minimal_symbol (name
, NULL
, NULL
)))
302 if (debug_aix_thread
)
303 fprintf_unfiltered (gdb_stdlog
, " returning PDC_FAILURE\n");
306 symbols
[i
].addr
= SYMBOL_VALUE_ADDRESS (ms
);
308 if (debug_aix_thread
)
309 fprintf_unfiltered (gdb_stdlog
, " symbols[%d].addr = %s\n",
310 i
, hex_string (symbols
[i
].addr
));
312 if (debug_aix_thread
)
313 fprintf_unfiltered (gdb_stdlog
, " returning PDC_SUCCESS\n");
317 /* Read registers call back function should be able to read the
318 context information of a debuggee kernel thread from an active
319 process or from a core file. The information should be formatted
320 in context64 form for both 32-bit and 64-bit process.
321 If successful return 0, else non-zero is returned. */
324 pdc_read_regs (pthdb_user_t user
,
326 unsigned long long flags
,
327 pthdb_context_t
*context
)
329 /* This function doesn't appear to be used, so we could probably
330 just return 0 here. HOWEVER, if it is not defined, the OS will
331 complain and several thread debug functions will fail. In case
332 this is needed, I have implemented what I think it should do,
333 however this code is untested. */
335 uint64_t gprs64
[ppc_num_gprs
];
336 uint32_t gprs32
[ppc_num_gprs
];
337 double fprs
[ppc_num_fprs
];
338 struct ptxsprs sprs64
;
339 struct ptsprs sprs32
;
341 if (debug_aix_thread
)
342 fprintf_unfiltered (gdb_stdlog
, "pdc_read_regs tid=%d flags=%s\n",
343 (int) tid
, hex_string (flags
));
345 /* General-purpose registers. */
346 if (flags
& PTHDB_FLAG_GPRS
)
350 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
351 (unsigned long) gprs64
, 0, NULL
))
352 memset (gprs64
, 0, sizeof (gprs64
));
353 memcpy (context
->gpr
, gprs64
, sizeof(gprs64
));
357 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
358 memset (gprs32
, 0, sizeof (gprs32
));
359 memcpy (context
->gpr
, gprs32
, sizeof(gprs32
));
363 /* Floating-point registers. */
364 if (flags
& PTHDB_FLAG_FPRS
)
366 if (!ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
))
367 memset (fprs
, 0, sizeof (fprs
));
368 memcpy (context
->fpr
, fprs
, sizeof(fprs
));
371 /* Special-purpose registers. */
372 if (flags
& PTHDB_FLAG_SPRS
)
376 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
377 (unsigned long) &sprs64
, 0, NULL
))
378 memset (&sprs64
, 0, sizeof (sprs64
));
379 memcpy (&context
->msr
, &sprs64
, sizeof(sprs64
));
383 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
384 memset (&sprs32
, 0, sizeof (sprs32
));
385 memcpy (&context
->msr
, &sprs32
, sizeof(sprs32
));
391 /* Write register function should be able to write requested context
392 information to specified debuggee's kernel thread id.
393 If successful return 0, else non-zero is returned. */
396 pdc_write_regs (pthdb_user_t user
,
398 unsigned long long flags
,
399 pthdb_context_t
*context
)
401 /* This function doesn't appear to be used, so we could probably
402 just return 0 here. HOWEVER, if it is not defined, the OS will
403 complain and several thread debug functions will fail. In case
404 this is needed, I have implemented what I think it should do,
405 however this code is untested. */
407 if (debug_aix_thread
)
408 fprintf_unfiltered (gdb_stdlog
, "pdc_write_regs tid=%d flags=%s\n",
409 (int) tid
, hex_string (flags
));
411 /* General-purpose registers. */
412 if (flags
& PTHDB_FLAG_GPRS
)
415 ptrace64aix (PTT_WRITE_GPRS
, tid
,
416 (unsigned long) context
->gpr
, 0, NULL
);
418 ptrace32 (PTT_WRITE_GPRS
, tid
, (int *) context
->gpr
, 0, NULL
);
421 /* Floating-point registers. */
422 if (flags
& PTHDB_FLAG_FPRS
)
424 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) context
->fpr
, 0, NULL
);
427 /* Special-purpose registers. */
428 if (flags
& PTHDB_FLAG_SPRS
)
432 ptrace64aix (PTT_WRITE_SPRS
, tid
,
433 (unsigned long) &context
->msr
, 0, NULL
);
437 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &context
->msr
, 0, NULL
);
443 /* pthdb callback: read LEN bytes from process ADDR into BUF. */
446 pdc_read_data (pthdb_user_t user
, void *buf
,
447 pthdb_addr_t addr
, size_t len
)
451 if (debug_aix_thread
)
452 fprintf_unfiltered (gdb_stdlog
,
453 "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
454 user
, (long) buf
, hex_string (addr
), len
);
456 status
= target_read_memory (addr
, buf
, len
);
457 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
459 if (debug_aix_thread
)
460 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n",
461 status
, pd_status2str (ret
));
465 /* pthdb callback: write LEN bytes from BUF to process ADDR. */
468 pdc_write_data (pthdb_user_t user
, void *buf
,
469 pthdb_addr_t addr
, size_t len
)
473 if (debug_aix_thread
)
474 fprintf_unfiltered (gdb_stdlog
,
475 "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
476 user
, (long) buf
, hex_string (addr
), len
);
478 status
= target_write_memory (addr
, buf
, len
);
479 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
481 if (debug_aix_thread
)
482 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n", status
,
483 pd_status2str (ret
));
487 /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
491 pdc_alloc (pthdb_user_t user
, size_t len
, void **bufp
)
493 if (debug_aix_thread
)
494 fprintf_unfiltered (gdb_stdlog
,
495 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
496 user
, len
, (long) bufp
);
497 *bufp
= xmalloc (len
);
498 if (debug_aix_thread
)
499 fprintf_unfiltered (gdb_stdlog
,
500 " malloc returned 0x%lx\n", (long) *bufp
);
502 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
505 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
508 /* pthdb callback: reallocate BUF, which was allocated by the alloc or
509 realloc callback, so that it contains LEN bytes, and store a
510 pointer to the result in BUFP. */
513 pdc_realloc (pthdb_user_t user
, void *buf
, size_t len
, void **bufp
)
515 if (debug_aix_thread
)
516 fprintf_unfiltered (gdb_stdlog
,
517 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
518 user
, (long) buf
, len
, (long) bufp
);
519 *bufp
= xrealloc (buf
, len
);
520 if (debug_aix_thread
)
521 fprintf_unfiltered (gdb_stdlog
,
522 " realloc returned 0x%lx\n", (long) *bufp
);
523 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
526 /* pthdb callback: free BUF, which was allocated by the alloc or
530 pdc_dealloc (pthdb_user_t user
, void *buf
)
532 if (debug_aix_thread
)
533 fprintf_unfiltered (gdb_stdlog
,
534 "pdc_free (user = %ld, buf = 0x%lx)\n", user
,
540 /* Return a printable representation of pthread STATE. */
543 state2str (pthdb_state_t state
)
548 /* i18n: Like "Thread-Id %d, [state] idle" */
549 return _("idle"); /* being created */
551 /* i18n: Like "Thread-Id %d, [state] running" */
552 return _("running"); /* running */
554 /* i18n: Like "Thread-Id %d, [state] sleeping" */
555 return _("sleeping"); /* awaiting an event */
557 /* i18n: Like "Thread-Id %d, [state] ready" */
558 return _("ready"); /* runnable */
560 /* i18n: Like "Thread-Id %d, [state] finished" */
561 return _("finished"); /* awaiting a join/detach */
563 /* i18n: Like "Thread-Id %d, [state] unknown" */
568 /* qsort() comparison function for sorting pd_thread structs by pthid. */
571 pcmp (const void *p1v
, const void *p2v
)
573 struct pd_thread
*p1
= (struct pd_thread
*) p1v
;
574 struct pd_thread
*p2
= (struct pd_thread
*) p2v
;
575 return p1
->pthid
< p2
->pthid
? -1 : p1
->pthid
> p2
->pthid
;
578 /* iterate_over_threads() callback for counting GDB threads. */
581 giter_count (struct thread_info
*thread
, void *countp
)
587 /* iterate_over_threads() callback for accumulating GDB thread pids. */
590 giter_accum (struct thread_info
*thread
, void *bufp
)
592 **(struct thread_info
***) bufp
= thread
;
593 (*(struct thread_info
***) bufp
)++;
597 /* ptid comparison function */
600 ptid_cmp (ptid_t ptid1
, ptid_t ptid2
)
604 if (ptid_get_pid (ptid1
) < ptid_get_pid (ptid2
))
606 else if (ptid_get_pid (ptid1
) > ptid_get_pid (ptid2
))
608 else if (ptid_get_tid (ptid1
) < ptid_get_tid (ptid2
))
610 else if (ptid_get_tid (ptid1
) > ptid_get_tid (ptid2
))
612 else if (ptid_get_lwp (ptid1
) < ptid_get_lwp (ptid2
))
614 else if (ptid_get_lwp (ptid1
) > ptid_get_lwp (ptid2
))
620 /* qsort() comparison function for sorting thread_info structs by pid. */
623 gcmp (const void *t1v
, const void *t2v
)
625 struct thread_info
*t1
= *(struct thread_info
**) t1v
;
626 struct thread_info
*t2
= *(struct thread_info
**) t2v
;
627 return ptid_cmp (t1
->ptid
, t2
->ptid
);
630 /* Search through the list of all kernel threads for the thread
631 that has stopped on a SIGTRAP signal, and return its TID.
632 Return 0 if none found. */
635 get_signaled_thread (void)
637 struct thrdsinfo64 thrinf
;
638 pthdb_tid_t ktid
= 0;
641 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
642 extern int getthrds (pid_t
, struct thrdsinfo64
*,
643 int, pthdb_tid_t
*, int);
647 if (getthrds (PIDGET (inferior_ptid
), &thrinf
,
648 sizeof (thrinf
), &ktid
, 1) != 1)
651 if (thrinf
.ti_cursig
== SIGTRAP
)
652 return thrinf
.ti_tid
;
655 /* Didn't find any thread stopped on a SIGTRAP signal. */
659 /* Synchronize GDB's thread list with libpthdebug's.
661 There are some benefits of doing this every time the inferior stops:
663 - allows users to run thread-specific commands without needing to
664 run "info threads" first
666 - helps pthdb_tid_pthread() work properly (see "libpthdebug
667 peculiarities" at the top of this module)
669 - simplifies the demands placed on libpthdebug, which seems to
670 have difficulty with certain call patterns */
673 sync_threadlists (void)
675 int cmd
, status
, infpid
;
676 int pcount
, psize
, pi
, gcount
, gi
;
677 struct pd_thread
*pbuf
;
678 struct thread_info
**gbuf
, **g
, *thread
;
679 pthdb_pthread_t pdtid
;
683 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
687 pbuf
= (struct pd_thread
*) xmalloc (psize
* sizeof *pbuf
);
689 for (cmd
= PTHDB_LIST_FIRST
;; cmd
= PTHDB_LIST_NEXT
)
691 status
= pthdb_pthread (pd_session
, &pdtid
, cmd
);
692 if (status
!= PTHDB_SUCCESS
|| pdtid
== PTHDB_INVALID_PTHREAD
)
695 status
= pthdb_pthread_ptid (pd_session
, pdtid
, &pthid
);
696 if (status
!= PTHDB_SUCCESS
|| pthid
== PTHDB_INVALID_PTID
)
702 pbuf
= (struct pd_thread
*) xrealloc (pbuf
,
703 psize
* sizeof *pbuf
);
705 pbuf
[pcount
].pdtid
= pdtid
;
706 pbuf
[pcount
].pthid
= pthid
;
710 for (pi
= 0; pi
< pcount
; pi
++)
712 status
= pthdb_pthread_tid (pd_session
, pbuf
[pi
].pdtid
, &tid
);
713 if (status
!= PTHDB_SUCCESS
)
714 tid
= PTHDB_INVALID_TID
;
718 qsort (pbuf
, pcount
, sizeof *pbuf
, pcmp
);
720 /* Accumulate an array of GDB threads sorted by pid. */
723 iterate_over_threads (giter_count
, &gcount
);
724 g
= gbuf
= (struct thread_info
**) xmalloc (gcount
* sizeof *gbuf
);
725 iterate_over_threads (giter_accum
, &g
);
726 qsort (gbuf
, gcount
, sizeof *gbuf
, gcmp
);
728 /* Apply differences between the two arrays to GDB's thread list. */
730 infpid
= PIDGET (inferior_ptid
);
731 for (pi
= gi
= 0; pi
< pcount
|| gi
< gcount
;)
735 delete_thread (gbuf
[gi
]->ptid
);
738 else if (gi
== gcount
)
740 thread
= add_thread (BUILD_THREAD (pbuf
[pi
].pthid
, infpid
));
741 thread
->private = xmalloc (sizeof (struct private_thread_info
));
742 thread
->private->pdtid
= pbuf
[pi
].pdtid
;
743 thread
->private->tid
= pbuf
[pi
].tid
;
751 pptid
= BUILD_THREAD (pbuf
[pi
].pthid
, infpid
);
752 gptid
= gbuf
[gi
]->ptid
;
753 pdtid
= pbuf
[pi
].pdtid
;
756 cmp_result
= ptid_cmp (pptid
, gptid
);
760 gbuf
[gi
]->private->pdtid
= pdtid
;
761 gbuf
[gi
]->private->tid
= tid
;
765 else if (cmp_result
> 0)
767 delete_thread (gptid
);
772 thread
= add_thread (pptid
);
773 thread
->private = xmalloc (sizeof (struct private_thread_info
));
774 thread
->private->pdtid
= pdtid
;
775 thread
->private->tid
= tid
;
785 /* Iterate_over_threads() callback for locating a thread, using
786 the TID of its associated kernel thread. */
789 iter_tid (struct thread_info
*thread
, void *tidp
)
791 const pthdb_tid_t tid
= *(pthdb_tid_t
*)tidp
;
793 return (thread
->private->tid
== tid
);
796 /* Synchronize libpthdebug's state with the inferior and with GDB,
797 generate a composite process/thread <pid> for the current thread,
798 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
801 pd_update (int set_infpid
)
806 struct thread_info
*thread
= NULL
;
809 return inferior_ptid
;
811 status
= pthdb_session_update (pd_session
);
812 if (status
!= PTHDB_SUCCESS
)
813 return inferior_ptid
;
817 /* Define "current thread" as one that just received a trap signal. */
819 tid
= get_signaled_thread ();
821 thread
= iterate_over_threads (iter_tid
, &tid
);
823 ptid
= inferior_ptid
;
828 inferior_ptid
= ptid
;
833 /* Try to start debugging threads in the current process.
834 If successful and SET_INFPID, set inferior_ptid to reflect the
838 pd_activate (int set_infpid
)
842 status
= pthdb_session_init (PD_USER
, arch64
? PEM_64BIT
: PEM_32BIT
,
843 PTHDB_FLAG_REGS
, &pd_callbacks
,
845 if (status
!= PTHDB_SUCCESS
)
847 return inferior_ptid
;
850 return pd_update (set_infpid
);
853 /* Undo the effects of pd_activate(). */
860 pthdb_session_destroy (pd_session
);
862 pid_to_prc (&inferior_ptid
);
866 /* An object file has just been loaded. Check whether the current
867 application is pthreaded, and if so, prepare for thread debugging. */
874 struct minimal_symbol
*ms
;
876 /* Don't initialize twice. */
880 /* Check application word size. */
881 arch64
= register_size (current_gdbarch
, 0) == 8;
883 /* Check whether the application is pthreaded. */
885 status
= pthdb_session_pthreaded (PD_USER
, PTHDB_FLAG_REGS
,
886 &pd_callbacks
, &stub_name
);
887 if ((status
!= PTHDB_SUCCESS
&&
888 status
!= PTHDB_NOT_PTHREADED
) || !stub_name
)
891 /* Set a breakpoint on the returned stub function. */
892 if (!(ms
= lookup_minimal_symbol (stub_name
, NULL
, NULL
)))
894 pd_brk_addr
= SYMBOL_VALUE_ADDRESS (ms
);
895 if (!create_thread_event_breakpoint (pd_brk_addr
))
898 /* Prepare for thread debugging. */
899 base_target
= current_target
;
900 push_target (&aix_thread_ops
);
903 /* If we're debugging a core file or an attached inferior, the
904 pthread library may already have been initialized, so try to
905 activate thread debugging. */
909 /* Undo the effects of pd_enable(). */
919 unpush_target (&aix_thread_ops
);
922 /* new_objfile observer callback.
924 If OBJFILE is non-null, check whether a threaded application is
925 being debugged, and if so, prepare for thread debugging.
927 If OBJFILE is null, stop debugging threads. */
930 new_objfile (struct objfile
*objfile
)
938 /* Attach to process specified by ARGS. */
941 aix_thread_attach (char *args
, int from_tty
)
943 base_target
.to_attach (args
, from_tty
);
947 /* Detach from the process attached to by aix_thread_attach(). */
950 aix_thread_detach (char *args
, int from_tty
)
953 base_target
.to_detach (args
, from_tty
);
956 /* Tell the inferior process to continue running thread PID if != -1
957 and all threads otherwise. */
960 aix_thread_resume (ptid_t ptid
, int step
, enum target_signal sig
)
962 struct thread_info
*thread
;
967 struct cleanup
*cleanup
= save_inferior_ptid ();
968 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
969 base_target
.to_resume (ptid
, step
, sig
);
970 do_cleanups (cleanup
);
974 thread
= find_thread_pid (ptid
);
976 error (_("aix-thread resume: unknown pthread %ld"),
979 tid
[0] = thread
->private->tid
;
980 if (tid
[0] == PTHDB_INVALID_TID
)
981 error (_("aix-thread resume: no tid for pthread %ld"),
986 ptrace64aix (PTT_CONTINUE
, tid
[0], 1,
987 target_signal_to_host (sig
), (int *) tid
);
989 ptrace32 (PTT_CONTINUE
, tid
[0], (int *) 1,
990 target_signal_to_host (sig
), (int *) tid
);
994 /* Wait for thread/process ID if != -1 or for any thread otherwise.
995 If an error occurs, return -1, else return the pid of the stopped
999 aix_thread_wait (ptid_t ptid
, struct target_waitstatus
*status
)
1001 struct cleanup
*cleanup
= save_inferior_ptid ();
1005 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1006 ptid
= base_target
.to_wait (ptid
, status
);
1007 do_cleanups (cleanup
);
1009 if (PIDGET (ptid
) == -1)
1010 return pid_to_ptid (-1);
1012 /* Check whether libpthdebug might be ready to be initialized. */
1013 if (!pd_active
&& status
->kind
== TARGET_WAITKIND_STOPPED
&&
1014 status
->value
.sig
== TARGET_SIGNAL_TRAP
1015 && read_pc_pid (ptid
)
1016 - gdbarch_decr_pc_after_break (current_gdbarch
) == pd_brk_addr
)
1017 return pd_activate (0);
1019 return pd_update (0);
1022 /* Record that the 64-bit general-purpose registers contain VALS. */
1025 supply_gprs64 (struct regcache
*regcache
, uint64_t *vals
)
1027 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1030 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1031 regcache_raw_supply (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1032 (char *) (vals
+ regno
));
1035 /* Record that 32-bit register REGNO contains VAL. */
1038 supply_reg32 (struct regcache
*regcache
, int regno
, uint32_t val
)
1040 regcache_raw_supply (regcache
, regno
, (char *) &val
);
1043 /* Record that the floating-point registers contain VALS. */
1046 supply_fprs (struct regcache
*regcache
, double *vals
)
1048 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1051 /* This function should never be called on architectures without
1052 floating-point registers. */
1053 gdb_assert (ppc_floating_point_unit_p (current_gdbarch
));
1055 for (regno
= 0; regno
< ppc_num_fprs
; regno
++)
1056 regcache_raw_supply (regcache
, regno
+ tdep
->ppc_fp0_regnum
,
1057 (char *) (vals
+ regno
));
1060 /* Predicate to test whether given register number is a "special" register. */
1062 special_register_p (int regno
)
1064 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1066 return regno
== gdbarch_pc_regnum (current_gdbarch
)
1067 || regno
== tdep
->ppc_ps_regnum
1068 || regno
== tdep
->ppc_cr_regnum
1069 || regno
== tdep
->ppc_lr_regnum
1070 || regno
== tdep
->ppc_ctr_regnum
1071 || regno
== tdep
->ppc_xer_regnum
1072 || (tdep
->ppc_fpscr_regnum
>= 0 && regno
== tdep
->ppc_fpscr_regnum
)
1073 || (tdep
->ppc_mq_regnum
>= 0 && regno
== tdep
->ppc_mq_regnum
);
1077 /* Record that the special registers contain the specified 64-bit and
1081 supply_sprs64 (struct regcache
*regcache
,
1082 uint64_t iar
, uint64_t msr
, uint32_t cr
,
1083 uint64_t lr
, uint64_t ctr
, uint32_t xer
,
1086 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1088 regcache_raw_supply (regcache
, gdbarch_pc_regnum (current_gdbarch
),
1090 regcache_raw_supply (regcache
, tdep
->ppc_ps_regnum
, (char *) &msr
);
1091 regcache_raw_supply (regcache
, tdep
->ppc_cr_regnum
, (char *) &cr
);
1092 regcache_raw_supply (regcache
, tdep
->ppc_lr_regnum
, (char *) &lr
);
1093 regcache_raw_supply (regcache
, tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1094 regcache_raw_supply (regcache
, tdep
->ppc_xer_regnum
, (char *) &xer
);
1095 if (tdep
->ppc_fpscr_regnum
>= 0)
1096 regcache_raw_supply (regcache
, tdep
->ppc_fpscr_regnum
,
1100 /* Record that the special registers contain the specified 32-bit
1104 supply_sprs32 (struct regcache
*regcache
,
1105 uint32_t iar
, uint32_t msr
, uint32_t cr
,
1106 uint32_t lr
, uint32_t ctr
, uint32_t xer
,
1109 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1111 regcache_raw_supply (regcache
, gdbarch_pc_regnum (current_gdbarch
),
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
1348 gdbarch_pc_regnum (current_gdbarch
)));
1350 if (regcache_valid_p (regcache
, gdbarch_pc_regnum (current_gdbarch
)))
1351 regcache_raw_collect (regcache
, gdbarch_pc_regnum (current_gdbarch
), iar
);
1352 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1353 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1354 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1355 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1356 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1357 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1358 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1359 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1360 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1361 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1362 if (tdep
->ppc_fpscr_regnum
>= 0
1363 && regcache_valid_p (regcache
, tdep
->ppc_fpscr_regnum
))
1364 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1368 fill_sprs32 (const struct regcache
*regcache
,
1369 uint32_t *iar
, uint32_t *msr
, uint32_t *cr
,
1370 uint32_t *lr
, uint32_t *ctr
, uint32_t *xer
,
1373 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1375 /* Verify that the size of the size of the IAR buffer is the
1376 same as the raw size of the PC (in the register cache). If
1377 they're not, then either GDB has been built incorrectly, or
1378 there's some other kind of internal error. To be really safe,
1379 we should check all of the sizes. */
1380 gdb_assert (sizeof (*iar
) == register_size (current_gdbarch
,
1382 (current_gdbarch
)));
1384 if (regcache_valid_p (regcache
, gdbarch_pc_regnum (current_gdbarch
)))
1385 regcache_raw_collect (regcache
, gdbarch_pc_regnum (current_gdbarch
), iar
);
1386 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1387 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1388 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1389 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1390 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1391 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1392 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1393 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1394 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1395 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1396 if (tdep
->ppc_fpscr_regnum
>= 0
1397 && regcache_valid_p (regcache
, tdep
->ppc_fpscr_regnum
))
1398 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1401 /* Store all registers into pthread PDTID, which doesn't have a kernel
1404 It's possible to store a single register into a non-kernel pthread,
1405 but I doubt it's worth the effort. */
1408 store_regs_user_thread (const struct regcache
*regcache
, pthdb_pthread_t pdtid
)
1410 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1412 pthdb_context_t ctx
;
1417 if (debug_aix_thread
)
1418 fprintf_unfiltered (gdb_stdlog
,
1419 "store_regs_user_thread %lx\n", (long) pdtid
);
1421 /* Retrieve the thread's current context for its non-register
1423 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1424 if (status
!= PTHDB_SUCCESS
)
1425 error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"),
1426 pd_status2str (status
));
1428 /* Collect general-purpose register values from the regcache. */
1430 for (i
= 0; i
< ppc_num_gprs
; i
++)
1431 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ i
))
1435 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1441 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1447 /* Collect floating-point register values from the regcache. */
1448 if (ppc_floating_point_unit_p (current_gdbarch
))
1449 fill_fprs (regcache
, ctx
.fpr
);
1451 /* Special registers (always kept in ctx as 64 bits). */
1454 fill_sprs64 (regcache
, &ctx
.iar
, &ctx
.msr
, &ctx
.cr
, &ctx
.lr
, &ctx
.ctr
,
1455 &ctx
.xer
, &ctx
.fpscr
);
1459 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1460 Solution: use 32-bit temp variables. */
1461 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1464 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
, &tmp_ctr
,
1465 &tmp_xer
, &tmp_fpscr
);
1466 if (regcache_valid_p (regcache
, gdbarch_pc_regnum (current_gdbarch
)))
1468 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1470 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1472 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1474 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1476 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1478 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1479 ctx
.fpscr
= tmp_fpscr
;
1482 status
= pthdb_pthread_setcontext (pd_session
, pdtid
, &ctx
);
1483 if (status
!= PTHDB_SUCCESS
)
1484 error (_("aix-thread: store_registers: pthdb_pthread_setcontext returned %s"),
1485 pd_status2str (status
));
1488 /* Store register REGNO if != -1 or all registers otherwise into
1491 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1492 SPRs, but there's no way to set individual registers within those
1493 groups. Therefore, if REGNO != -1, this function stores an entire
1497 store_regs_kernel_thread (const struct regcache
*regcache
, int regno
,
1500 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1501 uint64_t gprs64
[ppc_num_gprs
];
1502 uint32_t gprs32
[ppc_num_gprs
];
1503 double fprs
[ppc_num_fprs
];
1504 struct ptxsprs sprs64
;
1505 struct ptsprs sprs32
;
1508 if (debug_aix_thread
)
1509 fprintf_unfiltered (gdb_stdlog
,
1510 "store_regs_kernel_thread tid=%lx regno=%d\n",
1513 /* General-purpose registers. */
1515 || (tdep
->ppc_gp0_regnum
<= regno
1516 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_fprs
))
1520 /* Pre-fetch: some regs may not be in the cache. */
1521 ptrace64aix (PTT_READ_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1522 fill_gprs64 (regcache
, gprs64
);
1523 ptrace64aix (PTT_WRITE_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1527 /* Pre-fetch: some regs may not be in the cache. */
1528 ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
);
1529 fill_gprs32 (regcache
, gprs32
);
1530 ptrace32 (PTT_WRITE_GPRS
, tid
, gprs32
, 0, NULL
);
1534 /* Floating-point registers. */
1536 if (ppc_floating_point_unit_p (current_gdbarch
)
1538 || (regno
>= tdep
->ppc_fp0_regnum
1539 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1541 /* Pre-fetch: some regs may not be in the cache. */
1542 ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1543 fill_fprs (regcache
, fprs
);
1544 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1547 /* Special-purpose registers. */
1549 if (regno
== -1 || special_register_p (regno
))
1553 /* Pre-fetch: some registers won't be in the cache. */
1554 ptrace64aix (PTT_READ_SPRS
, tid
,
1555 (unsigned long) &sprs64
, 0, NULL
);
1556 fill_sprs64 (regcache
, &sprs64
.pt_iar
, &sprs64
.pt_msr
,
1557 &sprs64
.pt_cr
, &sprs64
.pt_lr
, &sprs64
.pt_ctr
,
1558 &sprs64
.pt_xer
, &sprs64
.pt_fpscr
);
1559 ptrace64aix (PTT_WRITE_SPRS
, tid
,
1560 (unsigned long) &sprs64
, 0, NULL
);
1564 /* The contents of "struct ptspr" were declared as "unsigned
1565 long" up to AIX 5.2, but are "unsigned int" since 5.3.
1566 Use temporaries to work around this problem. Also, add an
1567 assert here to make sure we fail if the system header files
1568 use "unsigned long", and the size of that type is not what
1569 the headers expect. */
1570 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1573 gdb_assert (sizeof (sprs32
.pt_iar
) == 4);
1575 /* Pre-fetch: some registers won't be in the cache. */
1576 ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1578 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
,
1579 &tmp_ctr
, &tmp_xer
, &tmp_fpscr
);
1581 sprs32
.pt_iar
= tmp_iar
;
1582 sprs32
.pt_msr
= tmp_msr
;
1583 sprs32
.pt_cr
= tmp_cr
;
1584 sprs32
.pt_lr
= tmp_lr
;
1585 sprs32
.pt_ctr
= tmp_ctr
;
1586 sprs32
.pt_xer
= tmp_xer
;
1587 sprs32
.pt_fpscr
= tmp_fpscr
;
1589 if (tdep
->ppc_mq_regnum
>= 0)
1590 if (regcache_valid_p (regcache
, tdep
->ppc_mq_regnum
))
1591 regcache_raw_collect (regcache
, tdep
->ppc_mq_regnum
,
1594 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1599 /* Store gdb's current view of the register set into the
1600 thread/process specified by inferior_ptid. */
1603 aix_thread_store_registers (struct regcache
*regcache
, int regno
)
1605 struct thread_info
*thread
;
1608 if (!PD_TID (inferior_ptid
))
1609 base_target
.to_store_registers (regcache
, regno
);
1612 thread
= find_thread_pid (inferior_ptid
);
1613 tid
= thread
->private->tid
;
1615 if (tid
== PTHDB_INVALID_TID
)
1616 store_regs_user_thread (regcache
, thread
->private->pdtid
);
1618 store_regs_kernel_thread (regcache
, regno
, tid
);
1622 /* Attempt a transfer all LEN bytes starting at OFFSET between the
1623 inferior's OBJECT:ANNEX space and GDB's READBUF/WRITEBUF buffer.
1624 Return the number of bytes actually transferred. */
1627 aix_thread_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1628 const char *annex
, gdb_byte
*readbuf
,
1629 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1631 struct cleanup
*old_chain
= save_inferior_ptid ();
1634 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1635 xfer
= base_target
.to_xfer_partial (ops
, object
, annex
,
1636 readbuf
, writebuf
, offset
, len
);
1638 do_cleanups (old_chain
);
1642 /* Kill and forget about the inferior process. */
1645 aix_thread_kill (void)
1647 struct cleanup
*cleanup
= save_inferior_ptid ();
1649 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1650 base_target
.to_kill ();
1651 do_cleanups (cleanup
);
1654 /* Clean up after the inferior exits. */
1657 aix_thread_mourn_inferior (void)
1660 base_target
.to_mourn_inferior ();
1663 /* Return whether thread PID is still valid. */
1666 aix_thread_thread_alive (ptid_t ptid
)
1669 return base_target
.to_thread_alive (ptid
);
1671 /* We update the thread list every time the child stops, so all
1672 valid threads should be in the thread list. */
1673 return in_thread_list (ptid
);
1676 /* Return a printable representation of composite PID for use in
1677 "info threads" output. */
1680 aix_thread_pid_to_str (ptid_t ptid
)
1682 static char *ret
= NULL
;
1685 return base_target
.to_pid_to_str (ptid
);
1687 /* Free previous return value; a new one will be allocated by
1691 ret
= xstrprintf (_("Thread %ld"), ptid_get_tid (ptid
));
1695 /* Return a printable representation of extra information about
1696 THREAD, for use in "info threads" output. */
1699 aix_thread_extra_thread_info (struct thread_info
*thread
)
1701 struct ui_file
*buf
;
1703 pthdb_pthread_t pdtid
;
1705 pthdb_state_t state
;
1706 pthdb_suspendstate_t suspendstate
;
1707 pthdb_detachstate_t detachstate
;
1710 static char *ret
= NULL
;
1712 if (!PD_TID (thread
->ptid
))
1715 buf
= mem_fileopen ();
1717 pdtid
= thread
->private->pdtid
;
1718 tid
= thread
->private->tid
;
1720 if (tid
!= PTHDB_INVALID_TID
)
1721 /* i18n: Like "thread-identifier %d, [state] running, suspended" */
1722 fprintf_unfiltered (buf
, _("tid %d"), (int)tid
);
1724 status
= pthdb_pthread_state (pd_session
, pdtid
, &state
);
1725 if (status
!= PTHDB_SUCCESS
)
1727 fprintf_unfiltered (buf
, ", %s", state2str (state
));
1729 status
= pthdb_pthread_suspendstate (pd_session
, pdtid
,
1731 if (status
== PTHDB_SUCCESS
&& suspendstate
== PSS_SUSPENDED
)
1732 /* i18n: Like "Thread-Id %d, [state] running, suspended" */
1733 fprintf_unfiltered (buf
, _(", suspended"));
1735 status
= pthdb_pthread_detachstate (pd_session
, pdtid
,
1737 if (status
== PTHDB_SUCCESS
&& detachstate
== PDS_DETACHED
)
1738 /* i18n: Like "Thread-Id %d, [state] running, detached" */
1739 fprintf_unfiltered (buf
, _(", detached"));
1741 pthdb_pthread_cancelpend (pd_session
, pdtid
, &cancelpend
);
1742 if (status
== PTHDB_SUCCESS
&& cancelpend
)
1743 /* i18n: Like "Thread-Id %d, [state] running, cancel pending" */
1744 fprintf_unfiltered (buf
, _(", cancel pending"));
1746 ui_file_write (buf
, "", 1);
1748 xfree (ret
); /* Free old buffer. */
1750 ret
= ui_file_xstrdup (buf
, &length
);
1751 ui_file_delete (buf
);
1756 /* Initialize target aix_thread_ops. */
1759 init_aix_thread_ops (void)
1761 aix_thread_ops
.to_shortname
= "aix-threads";
1762 aix_thread_ops
.to_longname
= _("AIX pthread support");
1763 aix_thread_ops
.to_doc
= _("AIX pthread support");
1765 aix_thread_ops
.to_attach
= aix_thread_attach
;
1766 aix_thread_ops
.to_detach
= aix_thread_detach
;
1767 aix_thread_ops
.to_resume
= aix_thread_resume
;
1768 aix_thread_ops
.to_wait
= aix_thread_wait
;
1769 aix_thread_ops
.to_fetch_registers
= aix_thread_fetch_registers
;
1770 aix_thread_ops
.to_store_registers
= aix_thread_store_registers
;
1771 aix_thread_ops
.to_xfer_partial
= aix_thread_xfer_partial
;
1772 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1773 debugging when the inferior reaches pd_brk_addr. */
1774 aix_thread_ops
.to_kill
= aix_thread_kill
;
1775 aix_thread_ops
.to_mourn_inferior
= aix_thread_mourn_inferior
;
1776 aix_thread_ops
.to_thread_alive
= aix_thread_thread_alive
;
1777 aix_thread_ops
.to_pid_to_str
= aix_thread_pid_to_str
;
1778 aix_thread_ops
.to_extra_thread_info
= aix_thread_extra_thread_info
;
1779 aix_thread_ops
.to_stratum
= thread_stratum
;
1780 aix_thread_ops
.to_magic
= OPS_MAGIC
;
1783 /* Module startup initialization function, automagically called by
1787 _initialize_aix_thread (void)
1789 init_aix_thread_ops ();
1790 add_target (&aix_thread_ops
);
1792 /* Notice when object files get loaded and unloaded. */
1793 observer_attach_new_objfile (new_objfile
);
1795 add_setshow_boolean_cmd ("aix-thread", class_maintenance
, &debug_aix_thread
,
1796 _("Set debugging of AIX thread module."),
1797 _("Show debugging of AIX thread module."),
1798 _("Enables debugging output (used to debug GDB)."),
1799 NULL
, NULL
, /* FIXME: i18n: Debugging of AIX thread module is \"%d\". */
1800 &setdebuglist
, &showdebuglist
);