1 /* Low level interface for debugging AIX 4.3+ pthreads.
3 Copyright 1999, 2000, 2002 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., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, 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"
51 #include "language.h" /* for local_hex_string() */
55 #include "coff/internal.h" /* for libcoff.h */
56 #include "bfd/libcoff.h" /* for xcoff_data */
60 #include <sys/types.h>
61 #include <sys/ptrace.h>
67 #include <sys/pthdebug.h>
69 /* Whether to emit debugging output. */
70 static int debug_aix_thread
;
72 /* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */
73 #ifndef PTHDB_VERSION_3
74 #define pthdb_tid_t tid_t
77 /* Return whether to treat PID as a debuggable thread id. */
79 #define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0)
81 /* Build a thread ptid. */
82 #define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID)
84 /* Build and lwp ptid. */
85 #define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP)
87 /* pthdb_user_t value that we pass to pthdb functions. 0 causes
88 PTHDB_BAD_USER errors, so use 1. */
92 /* Success and failure values returned by pthdb callbacks. */
94 #define PDC_SUCCESS PTHDB_SUCCESS
95 #define PDC_FAILURE PTHDB_CALLBACK
97 /* Private data attached to each element in GDB's thread list. */
99 struct private_thread_info
{
100 pthdb_pthread_t pdtid
; /* thread's libpthdebug id */
101 pthdb_tid_t tid
; /* kernel thread id */
104 /* Information about a thread of which libpthdebug is aware. */
107 pthdb_pthread_t pdtid
;
112 /* This module's target-specific operations, active while pd_able is true. */
114 static struct target_ops aix_thread_ops
;
116 /* Copy of the target over which ops is pushed.
117 This is more convenient than a pointer to child_ops or core_ops,
118 because they lack current_target's default callbacks. */
120 static struct target_ops base_target
;
122 /* Address of the function that libpthread will call when libpthdebug
123 is ready to be initialized. */
125 static CORE_ADDR pd_brk_addr
;
127 /* Whether the current application is debuggable by pthdb. */
129 static int pd_able
= 0;
131 /* Whether a threaded application is being debugged. */
133 static int pd_active
= 0;
135 /* Whether the current architecture is 64-bit.
136 Only valid when pd_able is true. */
140 /* Saved pointer to previous owner of target_new_objfile_hook. */
142 static void (*target_new_objfile_chain
)(struct objfile
*);
144 /* Forward declarations for pthdb callbacks. */
146 static int pdc_symbol_addrs (pthdb_user_t
, pthdb_symbol_t
*, int);
147 static int pdc_read_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
148 static int pdc_write_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
149 static int pdc_read_regs (pthdb_user_t user
, pthdb_tid_t tid
,
150 unsigned long long flags
,
151 pthdb_context_t
*context
);
152 static int pdc_write_regs (pthdb_user_t user
, pthdb_tid_t tid
,
153 unsigned long long flags
,
154 pthdb_context_t
*context
);
155 static int pdc_alloc (pthdb_user_t
, size_t, void **);
156 static int pdc_realloc (pthdb_user_t
, void *, size_t, void **);
157 static int pdc_dealloc (pthdb_user_t
, void *);
159 /* pthdb callbacks. */
161 static pthdb_callbacks_t pd_callbacks
= {
173 /* Current pthdb session. */
175 static pthdb_session_t pd_session
;
177 /* Return a printable representation of pthdebug function return
181 pd_status2str (int status
)
185 case PTHDB_SUCCESS
: return "SUCCESS";
186 case PTHDB_NOSYS
: return "NOSYS";
187 case PTHDB_NOTSUP
: return "NOTSUP";
188 case PTHDB_BAD_VERSION
: return "BAD_VERSION";
189 case PTHDB_BAD_USER
: return "BAD_USER";
190 case PTHDB_BAD_SESSION
: return "BAD_SESSION";
191 case PTHDB_BAD_MODE
: return "BAD_MODE";
192 case PTHDB_BAD_FLAGS
: return "BAD_FLAGS";
193 case PTHDB_BAD_CALLBACK
: return "BAD_CALLBACK";
194 case PTHDB_BAD_POINTER
: return "BAD_POINTER";
195 case PTHDB_BAD_CMD
: return "BAD_CMD";
196 case PTHDB_BAD_PTHREAD
: return "BAD_PTHREAD";
197 case PTHDB_BAD_ATTR
: return "BAD_ATTR";
198 case PTHDB_BAD_MUTEX
: return "BAD_MUTEX";
199 case PTHDB_BAD_MUTEXATTR
: return "BAD_MUTEXATTR";
200 case PTHDB_BAD_COND
: return "BAD_COND";
201 case PTHDB_BAD_CONDATTR
: return "BAD_CONDATTR";
202 case PTHDB_BAD_RWLOCK
: return "BAD_RWLOCK";
203 case PTHDB_BAD_RWLOCKATTR
: return "BAD_RWLOCKATTR";
204 case PTHDB_BAD_KEY
: return "BAD_KEY";
205 case PTHDB_BAD_PTID
: return "BAD_PTID";
206 case PTHDB_BAD_TID
: return "BAD_TID";
207 case PTHDB_CALLBACK
: return "CALLBACK";
208 case PTHDB_CONTEXT
: return "CONTEXT";
209 case PTHDB_HELD
: return "HELD";
210 case PTHDB_NOT_HELD
: return "NOT_HELD";
211 case PTHDB_MEMORY
: return "MEMORY";
212 case PTHDB_NOT_PTHREADED
: return "NOT_PTHREADED";
213 case PTHDB_SYMBOL
: return "SYMBOL";
214 case PTHDB_NOT_AVAIL
: return "NOT_AVAIL";
215 case PTHDB_INTERNAL
: return "INTERNAL";
216 default: return "UNKNOWN";
220 /* A call to ptrace(REQ, ID, ...) just returned RET. Check for
221 exceptional conditions and either return nonlocally or else return
222 1 for success and 0 for failure. */
225 ptrace_check (int req
, int id
, int ret
)
227 if (ret
== 0 && !errno
)
230 /* According to ptrace(2), ptrace may fail with EPERM if "the
231 Identifier parameter corresponds to a kernel thread which is
232 stopped in kernel mode and whose computational state cannot be
233 read or written." This happens quite often with register reads. */
240 if (ret
== -1 && errno
== EPERM
)
242 if (debug_aix_thread
)
243 fprintf_unfiltered (gdb_stdlog
,
244 "ptrace (%d, %d) = %d (errno = %d)\n",
245 req
, id
, ret
, errno
);
246 return ret
== -1 ? 0 : 1;
250 error ("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)",
251 req
, id
, ret
, errno
, safe_strerror (errno
));
252 return 0; /* Not reached. */
255 /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */
258 ptrace64aix (int req
, int id
, long long addr
, int data
, int *buf
)
261 return ptrace_check (req
, id
, ptracex (req
, id
, addr
, data
, buf
));
264 /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */
267 ptrace32 (int req
, int id
, int *addr
, int data
, int *buf
)
270 return ptrace_check (req
, id
,
271 ptrace (req
, id
, (int *) addr
, data
, buf
));
274 /* If *PIDP is a composite process/thread id, convert it to a
278 pid_to_prc (ptid_t
*ptidp
)
284 *ptidp
= pid_to_ptid (PIDGET (ptid
));
287 /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
288 the address of SYMBOLS[<i>].name. */
291 pdc_symbol_addrs (pthdb_user_t user
, pthdb_symbol_t
*symbols
, int count
)
293 struct minimal_symbol
*ms
;
297 if (debug_aix_thread
)
298 fprintf_unfiltered (gdb_stdlog
,
299 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
300 user
, (long) symbols
, count
);
302 for (i
= 0; i
< count
; i
++)
304 name
= symbols
[i
].name
;
305 if (debug_aix_thread
)
306 fprintf_unfiltered (gdb_stdlog
,
307 " symbols[%d].name = \"%s\"\n", i
, name
);
313 if (!(ms
= lookup_minimal_symbol (name
, NULL
, NULL
)))
315 if (debug_aix_thread
)
316 fprintf_unfiltered (gdb_stdlog
, " returning PDC_FAILURE\n");
319 symbols
[i
].addr
= SYMBOL_VALUE_ADDRESS (ms
);
321 if (debug_aix_thread
)
322 fprintf_unfiltered (gdb_stdlog
, " symbols[%d].addr = %s\n",
323 i
, local_hex_string (symbols
[i
].addr
));
325 if (debug_aix_thread
)
326 fprintf_unfiltered (gdb_stdlog
, " returning PDC_SUCCESS\n");
330 /* Read registers call back function should be able to read the
331 context information of a debuggee kernel thread from an active
332 process or from a core file. The information should be formatted
333 in context64 form for both 32-bit and 64-bit process.
334 If successful return 0, else non-zero is returned. */
337 pdc_read_regs (pthdb_user_t user
,
339 unsigned long long flags
,
340 pthdb_context_t
*context
)
342 /* This function doesn't appear to be used, so we could probably
343 just return 0 here. HOWEVER, if it is not defined, the OS will
344 complain and several thread debug functions will fail. In case
345 this is needed, I have implemented what I think it should do,
346 however this code is untested. */
351 struct ptxsprs sprs64
;
352 struct ptsprs sprs32
;
354 if (debug_aix_thread
)
355 fprintf_unfiltered (gdb_stdlog
, "pdc_read_regs tid=%d flags=%s\n",
356 (int) tid
, local_hex_string (flags
));
358 /* General-purpose registers. */
359 if (flags
& PTHDB_FLAG_GPRS
)
363 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
364 (unsigned long) gprs64
, 0, NULL
))
365 memset (gprs64
, 0, sizeof (gprs64
));
366 memcpy (context
->gpr
, gprs64
, sizeof(gprs64
));
370 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
371 memset (gprs32
, 0, sizeof (gprs32
));
372 memcpy (context
->gpr
, gprs32
, sizeof(gprs32
));
376 /* Floating-point registers. */
377 if (flags
& PTHDB_FLAG_FPRS
)
379 if (!ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
))
380 memset (fprs
, 0, sizeof (fprs
));
381 memcpy (context
->fpr
, fprs
, sizeof(fprs
));
384 /* Special-purpose registers. */
385 if (flags
& PTHDB_FLAG_SPRS
)
389 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
390 (unsigned long) &sprs64
, 0, NULL
))
391 memset (&sprs64
, 0, sizeof (sprs64
));
392 memcpy (&context
->msr
, &sprs64
, sizeof(sprs64
));
396 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
397 memset (&sprs32
, 0, sizeof (sprs32
));
398 memcpy (&context
->msr
, &sprs32
, sizeof(sprs32
));
404 /* Write register function should be able to write requested context
405 information to specified debuggee's kernel thread id.
406 If successful return 0, else non-zero is returned. */
409 pdc_write_regs (pthdb_user_t user
,
411 unsigned long long flags
,
412 pthdb_context_t
*context
)
414 /* This function doesn't appear to be used, so we could probably
415 just return 0 here. HOWEVER, if it is not defined, the OS will
416 complain and several thread debug functions will fail. In case
417 this is needed, I have implemented what I think it should do,
418 however this code is untested. */
420 if (debug_aix_thread
)
421 fprintf_unfiltered (gdb_stdlog
, "pdc_write_regs tid=%d flags=%s\n",
422 (int) tid
, local_hex_string (flags
));
424 /* General-purpose registers. */
425 if (flags
& PTHDB_FLAG_GPRS
)
428 ptrace64aix (PTT_WRITE_GPRS
, tid
,
429 (unsigned long) context
->gpr
, 0, NULL
);
431 ptrace32 (PTT_WRITE_GPRS
, tid
, (int *) context
->gpr
, 0, NULL
);
434 /* Floating-point registers. */
435 if (flags
& PTHDB_FLAG_FPRS
)
437 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) context
->fpr
, 0, NULL
);
440 /* Special-purpose registers. */
441 if (flags
& PTHDB_FLAG_SPRS
)
445 ptrace64aix (PTT_WRITE_SPRS
, tid
,
446 (unsigned long) &context
->msr
, 0, NULL
);
450 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &context
->msr
, 0, NULL
);
456 /* pthdb callback: read LEN bytes from process ADDR into BUF. */
459 pdc_read_data (pthdb_user_t user
, void *buf
,
460 pthdb_addr_t addr
, size_t len
)
464 if (debug_aix_thread
)
465 fprintf_unfiltered (gdb_stdlog
,
466 "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
467 user
, (long) buf
, local_hex_string (addr
), len
);
469 status
= target_read_memory (addr
, buf
, len
);
470 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
472 if (debug_aix_thread
)
473 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n",
474 status
, pd_status2str (ret
));
478 /* pthdb callback: write LEN bytes from BUF to process ADDR. */
481 pdc_write_data (pthdb_user_t user
, void *buf
,
482 pthdb_addr_t addr
, size_t len
)
486 if (debug_aix_thread
)
487 fprintf_unfiltered (gdb_stdlog
,
488 "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
489 user
, (long) buf
, local_hex_string (addr
), len
);
491 status
= target_write_memory (addr
, buf
, len
);
492 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
494 if (debug_aix_thread
)
495 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n", status
,
496 pd_status2str (ret
));
500 /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
504 pdc_alloc (pthdb_user_t user
, size_t len
, void **bufp
)
506 if (debug_aix_thread
)
507 fprintf_unfiltered (gdb_stdlog
,
508 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
509 user
, len
, (long) bufp
);
510 *bufp
= xmalloc (len
);
511 if (debug_aix_thread
)
512 fprintf_unfiltered (gdb_stdlog
,
513 " malloc returned 0x%lx\n", (long) *bufp
);
515 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
518 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
521 /* pthdb callback: reallocate BUF, which was allocated by the alloc or
522 realloc callback, so that it contains LEN bytes, and store a
523 pointer to the result in BUFP. */
526 pdc_realloc (pthdb_user_t user
, void *buf
, size_t len
, void **bufp
)
528 if (debug_aix_thread
)
529 fprintf_unfiltered (gdb_stdlog
,
530 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
531 user
, (long) buf
, len
, (long) bufp
);
532 *bufp
= xrealloc (buf
, len
);
533 if (debug_aix_thread
)
534 fprintf_unfiltered (gdb_stdlog
,
535 " realloc returned 0x%lx\n", (long) *bufp
);
536 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
539 /* pthdb callback: free BUF, which was allocated by the alloc or
543 pdc_dealloc (pthdb_user_t user
, void *buf
)
545 if (debug_aix_thread
)
546 fprintf_unfiltered (gdb_stdlog
,
547 "pdc_free (user = %ld, buf = 0x%lx)\n", user
,
553 /* Return a printable representation of pthread STATE. */
556 state2str (pthdb_state_t state
)
560 case PST_IDLE
: return "idle"; /* being created */
561 case PST_RUN
: return "running"; /* running */
562 case PST_SLEEP
: return "sleeping"; /* awaiting an event */
563 case PST_READY
: return "ready"; /* runnable */
564 case PST_TERM
: return "finished"; /* awaiting a join/detach */
565 default: return "unknown";
569 /* qsort() comparison function for sorting pd_thread structs by pthid. */
572 pcmp (const void *p1v
, const void *p2v
)
574 struct pd_thread
*p1
= (struct pd_thread
*) p1v
;
575 struct pd_thread
*p2
= (struct pd_thread
*) p2v
;
576 return p1
->pthid
< p2
->pthid
? -1 : p1
->pthid
> p2
->pthid
;
579 /* iterate_over_threads() callback for counting GDB threads. */
582 giter_count (struct thread_info
*thread
, void *countp
)
588 /* iterate_over_threads() callback for accumulating GDB thread pids. */
591 giter_accum (struct thread_info
*thread
, void *bufp
)
593 **(struct thread_info
***) bufp
= thread
;
594 (*(struct thread_info
***) bufp
)++;
598 /* ptid comparison function */
601 ptid_cmp (ptid_t ptid1
, ptid_t ptid2
)
605 if (ptid_get_pid (ptid1
) < ptid_get_pid (ptid2
))
607 else if (ptid_get_pid (ptid1
) > ptid_get_pid (ptid2
))
609 else if (ptid_get_tid (ptid1
) < ptid_get_tid (ptid2
))
611 else if (ptid_get_tid (ptid1
) > ptid_get_tid (ptid2
))
613 else if (ptid_get_lwp (ptid1
) < ptid_get_lwp (ptid2
))
615 else if (ptid_get_lwp (ptid1
) > ptid_get_lwp (ptid2
))
621 /* qsort() comparison function for sorting thread_info structs by pid. */
624 gcmp (const void *t1v
, const void *t2v
)
626 struct thread_info
*t1
= *(struct thread_info
**) t1v
;
627 struct thread_info
*t2
= *(struct thread_info
**) t2v
;
628 return ptid_cmp (t1
->ptid
, t2
->ptid
);
631 /* Synchronize GDB's thread list with libpthdebug's.
633 There are some benefits of doing this every time the inferior stops:
635 - allows users to run thread-specific commands without needing to
636 run "info threads" first
638 - helps pthdb_tid_pthread() work properly (see "libpthdebug
639 peculiarities" at the top of this module)
641 - simplifies the demands placed on libpthdebug, which seems to
642 have difficulty with certain call patterns */
645 sync_threadlists (void)
647 int cmd
, status
, infpid
;
648 int pcount
, psize
, pi
, gcount
, gi
;
649 struct pd_thread
*pbuf
;
650 struct thread_info
**gbuf
, **g
, *thread
;
651 pthdb_pthread_t pdtid
;
655 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
659 pbuf
= (struct pd_thread
*) xmalloc (psize
* sizeof *pbuf
);
661 for (cmd
= PTHDB_LIST_FIRST
;; cmd
= PTHDB_LIST_NEXT
)
663 status
= pthdb_pthread (pd_session
, &pdtid
, cmd
);
664 if (status
!= PTHDB_SUCCESS
|| pdtid
== PTHDB_INVALID_PTHREAD
)
667 status
= pthdb_pthread_ptid (pd_session
, pdtid
, &pthid
);
668 if (status
!= PTHDB_SUCCESS
|| pthid
== PTHDB_INVALID_PTID
)
674 pbuf
= (struct pd_thread
*) xrealloc (pbuf
,
675 psize
* sizeof *pbuf
);
677 pbuf
[pcount
].pdtid
= pdtid
;
678 pbuf
[pcount
].pthid
= pthid
;
682 for (pi
= 0; pi
< pcount
; pi
++)
684 status
= pthdb_pthread_tid (pd_session
, pbuf
[pi
].pdtid
, &tid
);
685 if (status
!= PTHDB_SUCCESS
)
686 tid
= PTHDB_INVALID_TID
;
690 qsort (pbuf
, pcount
, sizeof *pbuf
, pcmp
);
692 /* Accumulate an array of GDB threads sorted by pid. */
695 iterate_over_threads (giter_count
, &gcount
);
696 g
= gbuf
= (struct thread_info
**) xmalloc (gcount
* sizeof *gbuf
);
697 iterate_over_threads (giter_accum
, &g
);
698 qsort (gbuf
, gcount
, sizeof *gbuf
, gcmp
);
700 /* Apply differences between the two arrays to GDB's thread list. */
702 infpid
= PIDGET (inferior_ptid
);
703 for (pi
= gi
= 0; pi
< pcount
|| gi
< gcount
;)
707 delete_thread (gbuf
[gi
]->ptid
);
710 else if (gi
== gcount
)
712 thread
= add_thread (BUILD_THREAD (pbuf
[pi
].pthid
, infpid
));
713 thread
->private = xmalloc (sizeof (struct private_thread_info
));
714 thread
->private->pdtid
= pbuf
[pi
].pdtid
;
715 thread
->private->tid
= pbuf
[pi
].tid
;
723 pptid
= BUILD_THREAD (pbuf
[pi
].pthid
, infpid
);
724 gptid
= gbuf
[gi
]->ptid
;
725 pdtid
= pbuf
[pi
].pdtid
;
728 cmp_result
= ptid_cmp (pptid
, gptid
);
732 gbuf
[gi
]->private->pdtid
= pdtid
;
733 gbuf
[gi
]->private->tid
= tid
;
737 else if (cmp_result
> 0)
739 delete_thread (gptid
);
744 thread
= add_thread (pptid
);
745 thread
->private = xmalloc (sizeof (struct private_thread_info
));
746 thread
->private->pdtid
= pdtid
;
747 thread
->private->tid
= tid
;
757 /* Iterate_over_threads() callback for locating a thread whose kernel
758 thread just received a trap signal. */
761 iter_trap (struct thread_info
*thread
, void *unused
)
763 struct thrdsinfo64 thrinf
;
766 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
767 extern int getthrds (pid_t
, struct thrdsinfo64
*,
768 int, pthdb_tid_t
*, int);
770 tid
= thread
->private->tid
;
771 if (tid
== PTHDB_INVALID_TID
)
774 if (getthrds (PIDGET (inferior_ptid
), &thrinf
,
775 sizeof (thrinf
), &tid
, 1) != 1)
778 return thrinf
.ti_cursig
== SIGTRAP
;
781 /* Synchronize libpthdebug's state with the inferior and with GDB,
782 generate a composite process/thread <pid> for the current thread,
783 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
786 pd_update (int set_infpid
)
790 struct thread_info
*thread
;
793 return inferior_ptid
;
795 status
= pthdb_session_update (pd_session
);
796 if (status
!= PTHDB_SUCCESS
)
797 return inferior_ptid
;
801 /* Define "current thread" as one that just received a trap signal. */
803 thread
= iterate_over_threads (iter_trap
, NULL
);
805 ptid
= inferior_ptid
;
810 inferior_ptid
= ptid
;
815 /* Try to start debugging threads in the current process.
816 If successful and SET_INFPID, set inferior_ptid to reflect the
820 pd_activate (int set_infpid
)
824 status
= pthdb_session_init (PD_USER
, arch64
? PEM_64BIT
: PEM_32BIT
,
825 PTHDB_FLAG_REGS
, &pd_callbacks
,
827 if (status
!= PTHDB_SUCCESS
)
829 return inferior_ptid
;
832 return pd_update (set_infpid
);
835 /* Undo the effects of pd_activate(). */
842 pthdb_session_destroy (pd_session
);
844 pid_to_prc (&inferior_ptid
);
848 /* An object file has just been loaded. Check whether the current
849 application is pthreaded, and if so, prepare for thread debugging. */
856 struct minimal_symbol
*ms
;
858 /* Don't initialize twice. */
862 /* Check application word size. */
863 arch64
= REGISTER_RAW_SIZE (0) == 8;
865 /* Check whether the application is pthreaded. */
867 status
= pthdb_session_pthreaded (PD_USER
, PTHDB_FLAG_REGS
,
868 &pd_callbacks
, &stub_name
);
869 if ((status
!= PTHDB_SUCCESS
&&
870 status
!= PTHDB_NOT_PTHREADED
) || !stub_name
)
873 /* Set a breakpoint on the returned stub function. */
874 if (!(ms
= lookup_minimal_symbol (stub_name
, NULL
, NULL
)))
876 pd_brk_addr
= SYMBOL_VALUE_ADDRESS (ms
);
877 if (!create_thread_event_breakpoint (pd_brk_addr
))
880 /* Prepare for thread debugging. */
881 base_target
= current_target
;
882 push_target (&aix_thread_ops
);
885 /* If we're debugging a core file or an attached inferior, the
886 pthread library may already have been initialized, so try to
887 activate thread debugging. */
891 /* Undo the effects of pd_enable(). */
901 unpush_target (&aix_thread_ops
);
904 /* target_new_objfile_hook callback.
906 If OBJFILE is non-null, check whether a threaded application is
907 being debugged, and if so, prepare for thread debugging.
909 If OBJFILE is null, stop debugging threads. */
912 new_objfile (struct objfile
*objfile
)
919 if (target_new_objfile_chain
)
920 target_new_objfile_chain (objfile
);
923 /* Attach to process specified by ARGS. */
926 aix_thread_attach (char *args
, int from_tty
)
928 base_target
.to_attach (args
, from_tty
);
932 /* Detach from the process attached to by aix_thread_attach(). */
935 aix_thread_detach (char *args
, int from_tty
)
938 base_target
.to_detach (args
, from_tty
);
941 /* Tell the inferior process to continue running thread PID if != -1
942 and all threads otherwise. */
945 aix_thread_resume (ptid_t ptid
, int step
, enum target_signal sig
)
947 struct thread_info
*thread
;
952 struct cleanup
*cleanup
= save_inferior_ptid ();
953 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
954 base_target
.to_resume (ptid
, step
, sig
);
955 do_cleanups (cleanup
);
959 thread
= find_thread_pid (ptid
);
961 error ("aix-thread resume: unknown pthread %ld",
964 tid
[0] = thread
->private->tid
;
965 if (tid
[0] == PTHDB_INVALID_TID
)
966 error ("aix-thread resume: no tid for pthread %ld",
971 ptrace64aix (PTT_CONTINUE
, tid
[0], 1,
972 target_signal_to_host (sig
), (int *) tid
);
974 ptrace32 (PTT_CONTINUE
, tid
[0], (int *) 1,
975 target_signal_to_host (sig
), (int *) tid
);
979 /* Wait for thread/process ID if != -1 or for any thread otherwise.
980 If an error occurs, return -1, else return the pid of the stopped
984 aix_thread_wait (ptid_t ptid
, struct target_waitstatus
*status
)
986 struct cleanup
*cleanup
= save_inferior_ptid ();
990 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
991 ptid
= base_target
.to_wait (ptid
, status
);
992 do_cleanups (cleanup
);
994 if (PIDGET (ptid
) == -1)
995 return pid_to_ptid (-1);
997 /* Check whether libpthdebug might be ready to be initialized. */
998 if (!pd_active
&& status
->kind
== TARGET_WAITKIND_STOPPED
&&
999 status
->value
.sig
== TARGET_SIGNAL_TRAP
&&
1000 read_pc_pid (ptid
) - DECR_PC_AFTER_BREAK
== pd_brk_addr
)
1001 return pd_activate (0);
1003 return pd_update (0);
1006 /* Record that the 64-bit general-purpose registers contain VALS. */
1009 supply_gprs64 (uint64_t *vals
)
1013 for (regno
= 0; regno
< 32; regno
++)
1014 supply_register (regno
, (char *) (vals
+ regno
));
1017 /* Record that 32-bit register REGNO contains VAL. */
1020 supply_reg32 (int regno
, uint32_t val
)
1022 supply_register (regno
, (char *) &val
);
1025 /* Record that the floating-point registers contain VALS. */
1028 supply_fprs (double *vals
)
1032 for (regno
= 0; regno
< 32; regno
++)
1033 supply_register (regno
+ FP0_REGNUM
, (char *) (vals
+ regno
));
1036 /* Predicate to test whether given register number is a "special" register. */
1038 special_register_p (int regno
)
1040 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1042 return regno
== PC_REGNUM
1043 || regno
== tdep
->ppc_ps_regnum
1044 || regno
== tdep
->ppc_cr_regnum
1045 || regno
== tdep
->ppc_lr_regnum
1046 || regno
== tdep
->ppc_ctr_regnum
1047 || regno
== tdep
->ppc_xer_regnum
1048 || (tdep
->ppc_mq_regnum
>= 0 && regno
== tdep
->ppc_mq_regnum
);
1052 /* Record that the special registers contain the specified 64-bit and
1056 supply_sprs64 (uint64_t iar
, uint64_t msr
, uint32_t cr
,
1057 uint64_t lr
, uint64_t ctr
, uint32_t xer
)
1059 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1061 supply_register (PC_REGNUM
, (char *) &iar
);
1062 supply_register (tdep
->ppc_ps_regnum
, (char *) &msr
);
1063 supply_register (tdep
->ppc_cr_regnum
, (char *) &cr
);
1064 supply_register (tdep
->ppc_lr_regnum
, (char *) &lr
);
1065 supply_register (tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1066 supply_register (tdep
->ppc_xer_regnum
, (char *) &xer
);
1069 /* Record that the special registers contain the specified 32-bit
1073 supply_sprs32 (uint32_t iar
, uint32_t msr
, uint32_t cr
,
1074 uint32_t lr
, uint32_t ctr
, uint32_t xer
)
1076 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1078 supply_register (PC_REGNUM
, (char *) &iar
);
1079 supply_register (tdep
->ppc_ps_regnum
, (char *) &msr
);
1080 supply_register (tdep
->ppc_cr_regnum
, (char *) &cr
);
1081 supply_register (tdep
->ppc_lr_regnum
, (char *) &lr
);
1082 supply_register (tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1083 supply_register (tdep
->ppc_xer_regnum
, (char *) &xer
);
1086 /* Fetch all registers from pthread PDTID, which doesn't have a kernel
1089 There's no way to query a single register from a non-kernel
1090 pthread, so there's no need for a single-register version of this
1094 fetch_regs_user_thread (pthdb_pthread_t pdtid
)
1097 pthdb_context_t ctx
;
1099 if (debug_aix_thread
)
1100 fprintf_unfiltered (gdb_stdlog
,
1101 "fetch_regs_user_thread %lx\n", (long) pdtid
);
1102 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1103 if (status
!= PTHDB_SUCCESS
)
1104 error ("aix-thread: fetch_registers: pthdb_pthread_context returned %s",
1105 pd_status2str (status
));
1107 /* General-purpose registers. */
1110 supply_gprs64 (ctx
.gpr
);
1112 for (i
= 0; i
< 32; i
++)
1113 supply_reg32 (i
, ctx
.gpr
[i
]);
1115 /* Floating-point registers. */
1117 supply_fprs (ctx
.fpr
);
1119 /* Special registers. */
1122 supply_sprs64 (ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
, ctx
.xer
);
1124 supply_sprs32 (ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
, ctx
.xer
);
1127 /* Fetch register REGNO if != -1 or all registers otherwise from
1130 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1131 SPRs, but there's no way to query individual registers within those
1132 groups. Therefore, if REGNO != -1, this function fetches an entire
1135 Unfortunately, kernel thread register queries often fail with
1136 EPERM, indicating that the thread is in kernel space. This breaks
1137 backtraces of threads other than the current one. To make that
1138 breakage obvious without throwing an error to top level (which is
1139 bad e.g. during "info threads" output), zero registers that can't
1143 fetch_regs_kernel_thread (int regno
, pthdb_tid_t tid
)
1145 uint64_t gprs64
[32];
1146 uint32_t gprs32
[32];
1148 struct ptxsprs sprs64
;
1149 struct ptsprs sprs32
;
1152 if (debug_aix_thread
)
1153 fprintf_unfiltered (gdb_stdlog
,
1154 "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
1155 (long) tid
, regno
, arch64
);
1157 /* General-purpose registers. */
1158 if (regno
== -1 || regno
< FP0_REGNUM
)
1162 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
1163 (unsigned long) gprs64
, 0, NULL
))
1164 memset (gprs64
, 0, sizeof (gprs64
));
1165 supply_gprs64 (gprs64
);
1169 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
1170 memset (gprs32
, 0, sizeof (gprs32
));
1171 for (i
= 0; i
< 32; i
++)
1172 supply_reg32 (i
, gprs32
[i
]);
1176 /* Floating-point registers. */
1178 if (regno
== -1 || (regno
>= FP0_REGNUM
&& regno
<= FPLAST_REGNUM
))
1180 if (!ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
))
1181 memset (fprs
, 0, sizeof (fprs
));
1185 /* Special-purpose registers. */
1187 if (regno
== -1 || special_register_p (regno
))
1191 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
1192 (unsigned long) &sprs64
, 0, NULL
))
1193 memset (&sprs64
, 0, sizeof (sprs64
));
1194 supply_sprs64 (sprs64
.pt_iar
, sprs64
.pt_msr
, sprs64
.pt_cr
,
1195 sprs64
.pt_lr
, sprs64
.pt_ctr
, sprs64
.pt_xer
);
1199 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1201 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
1202 memset (&sprs32
, 0, sizeof (sprs32
));
1203 supply_sprs32 (sprs32
.pt_iar
, sprs32
.pt_msr
, sprs32
.pt_cr
,
1204 sprs32
.pt_lr
, sprs32
.pt_ctr
, sprs32
.pt_xer
);
1206 if (tdep
->ppc_mq_regnum
>= 0)
1207 supply_register (tdep
->ppc_mq_regnum
, (char *) &sprs32
.pt_mq
);
1212 /* Fetch register REGNO if != -1 or all registers otherwise in the
1213 thread/process specified by inferior_ptid. */
1216 aix_thread_fetch_registers (int regno
)
1218 struct thread_info
*thread
;
1221 if (!PD_TID (inferior_ptid
))
1222 base_target
.to_fetch_registers (regno
);
1225 thread
= find_thread_pid (inferior_ptid
);
1226 tid
= thread
->private->tid
;
1228 if (tid
== PTHDB_INVALID_TID
)
1229 fetch_regs_user_thread (thread
->private->pdtid
);
1231 fetch_regs_kernel_thread (regno
, tid
);
1235 /* Store the gp registers into an array of uint32_t or uint64_t. */
1238 fill_gprs64 (uint64_t *vals
)
1242 for (regno
= 0; regno
< FP0_REGNUM
; regno
++)
1243 if (register_cached (regno
))
1244 regcache_collect (regno
, vals
+ regno
);
1248 fill_gprs32 (uint32_t *vals
)
1252 for (regno
= 0; regno
< FP0_REGNUM
; regno
++)
1253 if (register_cached (regno
))
1254 regcache_collect (regno
, vals
+ regno
);
1257 /* Store the floating point registers into a double array. */
1259 fill_fprs (double *vals
)
1263 for (regno
= FP0_REGNUM
; regno
< FPLAST_REGNUM
; regno
++)
1264 if (register_cached (regno
))
1265 regcache_collect (regno
, vals
+ regno
);
1268 /* Store the special registers into the specified 64-bit and 32-bit
1272 fill_sprs64 (uint64_t *iar
, uint64_t *msr
, uint32_t *cr
,
1273 uint64_t *lr
, uint64_t *ctr
, uint32_t *xer
)
1275 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1277 /* Verify that the size of the size of the IAR buffer is the
1278 same as the raw size of the PC (in the register cache). If
1279 they're not, then either GDB has been built incorrectly, or
1280 there's some other kind of internal error. To be really safe,
1281 we should check all of the sizes. */
1282 gdb_assert (sizeof (*iar
) == REGISTER_RAW_SIZE (PC_REGNUM
));
1284 if (register_cached (PC_REGNUM
))
1285 regcache_collect (PC_REGNUM
, iar
);
1286 if (register_cached (tdep
->ppc_ps_regnum
))
1287 regcache_collect (tdep
->ppc_ps_regnum
, msr
);
1288 if (register_cached (tdep
->ppc_cr_regnum
))
1289 regcache_collect (tdep
->ppc_cr_regnum
, cr
);
1290 if (register_cached (tdep
->ppc_lr_regnum
))
1291 regcache_collect (tdep
->ppc_lr_regnum
, lr
);
1292 if (register_cached (tdep
->ppc_ctr_regnum
))
1293 regcache_collect (tdep
->ppc_ctr_regnum
, ctr
);
1294 if (register_cached (tdep
->ppc_xer_regnum
))
1295 regcache_collect (tdep
->ppc_xer_regnum
, xer
);
1299 fill_sprs32 (unsigned long *iar
, unsigned long *msr
, unsigned long *cr
,
1300 unsigned long *lr
, unsigned long *ctr
, unsigned long *xer
)
1302 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1304 /* Verify that the size of the size of the IAR buffer is the
1305 same as the raw size of the PC (in the register cache). If
1306 they're not, then either GDB has been built incorrectly, or
1307 there's some other kind of internal error. To be really safe,
1308 we should check all of the sizes.
1310 If this assert() fails, the most likely reason is that GDB was
1311 built incorrectly. In order to make use of many of the header
1312 files in /usr/include/sys, GDB needs to be configured so that
1313 sizeof (long) == 4). */
1314 gdb_assert (sizeof (*iar
) == REGISTER_RAW_SIZE (PC_REGNUM
));
1316 if (register_cached (PC_REGNUM
))
1317 regcache_collect (PC_REGNUM
, iar
);
1318 if (register_cached (tdep
->ppc_ps_regnum
))
1319 regcache_collect (tdep
->ppc_ps_regnum
, msr
);
1320 if (register_cached (tdep
->ppc_cr_regnum
))
1321 regcache_collect (tdep
->ppc_cr_regnum
, cr
);
1322 if (register_cached (tdep
->ppc_lr_regnum
))
1323 regcache_collect (tdep
->ppc_lr_regnum
, lr
);
1324 if (register_cached (tdep
->ppc_ctr_regnum
))
1325 regcache_collect (tdep
->ppc_ctr_regnum
, ctr
);
1326 if (register_cached (tdep
->ppc_xer_regnum
))
1327 regcache_collect (tdep
->ppc_xer_regnum
, xer
);
1330 /* Store all registers into pthread PDTID, which doesn't have a kernel
1333 It's possible to store a single register into a non-kernel pthread,
1334 but I doubt it's worth the effort. */
1337 store_regs_user_thread (pthdb_pthread_t pdtid
)
1340 pthdb_context_t ctx
;
1345 if (debug_aix_thread
)
1346 fprintf_unfiltered (gdb_stdlog
,
1347 "store_regs_user_thread %lx\n", (long) pdtid
);
1349 /* Retrieve the thread's current context for its non-register
1351 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1352 if (status
!= PTHDB_SUCCESS
)
1353 error ("aix-thread: store_registers: pthdb_pthread_context returned %s",
1354 pd_status2str (status
));
1356 /* Collect general-purpose register values from the regcache. */
1358 for (i
= 0; i
< 32; i
++)
1359 if (register_cached (i
))
1363 regcache_collect (i
, (void *) &int64
);
1368 regcache_collect (i
, (void *) &int32
);
1373 /* Collect floating-point register values from the regcache. */
1374 fill_fprs (ctx
.fpr
);
1376 /* Special registers (always kept in ctx as 64 bits). */
1379 fill_sprs64 (&ctx
.iar
, &ctx
.msr
, &ctx
.cr
, &ctx
.lr
, &ctx
.ctr
, &ctx
.xer
);
1383 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1384 Solution: use 32-bit temp variables. (The assert() in fill_sprs32()
1385 will fail if the size of an unsigned long is incorrect. If this
1386 happens, GDB needs to be reconfigured so that longs are 32-bits.) */
1387 unsigned long tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
;
1388 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1390 fill_sprs32 (&tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
, &tmp_ctr
, &tmp_xer
);
1391 if (register_cached (PC_REGNUM
))
1393 if (register_cached (tdep
->ppc_ps_regnum
))
1395 if (register_cached (tdep
->ppc_cr_regnum
))
1397 if (register_cached (tdep
->ppc_lr_regnum
))
1399 if (register_cached (tdep
->ppc_ctr_regnum
))
1401 if (register_cached (tdep
->ppc_xer_regnum
))
1405 status
= pthdb_pthread_setcontext (pd_session
, pdtid
, &ctx
);
1406 if (status
!= PTHDB_SUCCESS
)
1407 error ("aix-thread: store_registers: pthdb_pthread_setcontext returned %s",
1408 pd_status2str (status
));
1411 /* Store register REGNO if != -1 or all registers otherwise into
1414 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1415 SPRs, but there's no way to set individual registers within those
1416 groups. Therefore, if REGNO != -1, this function stores an entire
1420 store_regs_kernel_thread (int regno
, pthdb_tid_t tid
)
1422 uint64_t gprs64
[32];
1423 uint32_t gprs32
[32];
1425 struct ptxsprs sprs64
;
1426 struct ptsprs sprs32
;
1428 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1430 if (debug_aix_thread
)
1431 fprintf_unfiltered (gdb_stdlog
,
1432 "store_regs_kernel_thread tid=%lx regno=%d\n",
1435 /* General-purpose registers. */
1436 if (regno
== -1 || regno
< FP0_REGNUM
)
1440 /* Pre-fetch: some regs may not be in the cache. */
1441 ptrace64aix (PTT_READ_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1442 fill_gprs64 (gprs64
);
1443 ptrace64aix (PTT_WRITE_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1447 /* Pre-fetch: some regs may not be in the cache. */
1448 ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
);
1449 fill_gprs32 (gprs32
);
1450 ptrace32 (PTT_WRITE_GPRS
, tid
, gprs32
, 0, NULL
);
1454 /* Floating-point registers. */
1456 if (regno
== -1 || (regno
>= FP0_REGNUM
&& regno
<= FPLAST_REGNUM
))
1458 /* Pre-fetch: some regs may not be in the cache. */
1459 ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1461 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1464 /* Special-purpose registers. */
1466 if (regno
== -1 || special_register_p (regno
))
1470 /* Pre-fetch: some registers won't be in the cache. */
1471 ptrace64aix (PTT_READ_SPRS
, tid
,
1472 (unsigned long) &sprs64
, 0, NULL
);
1473 fill_sprs64 (&sprs64
.pt_iar
, &sprs64
.pt_msr
, &sprs64
.pt_cr
,
1474 &sprs64
.pt_lr
, &sprs64
.pt_ctr
, &sprs64
.pt_xer
);
1475 ptrace64aix (PTT_WRITE_SPRS
, tid
,
1476 (unsigned long) &sprs64
, 0, NULL
);
1480 /* Pre-fetch: some registers won't be in the cache. */
1481 ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1483 fill_sprs32 (&sprs32
.pt_iar
, &sprs32
.pt_msr
, &sprs32
.pt_cr
,
1484 &sprs32
.pt_lr
, &sprs32
.pt_ctr
, &sprs32
.pt_xer
);
1486 if (tdep
->ppc_mq_regnum
>= 0)
1487 if (register_cached (tdep
->ppc_mq_regnum
))
1488 regcache_collect (tdep
->ppc_mq_regnum
, &sprs32
.pt_mq
);
1490 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1495 /* Store gdb's current view of the register set into the
1496 thread/process specified by inferior_ptid. */
1499 aix_thread_store_registers (int regno
)
1501 struct thread_info
*thread
;
1504 if (!PD_TID (inferior_ptid
))
1505 base_target
.to_store_registers (regno
);
1508 thread
= find_thread_pid (inferior_ptid
);
1509 tid
= thread
->private->tid
;
1511 if (tid
== PTHDB_INVALID_TID
)
1512 store_regs_user_thread (thread
->private->pdtid
);
1514 store_regs_kernel_thread (regno
, tid
);
1518 /* Transfer LEN bytes of memory from GDB address MYADDR to target
1519 address MEMADDR if WRITE and vice versa otherwise. */
1522 aix_thread_xfer_memory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
1523 struct mem_attrib
*attrib
,
1524 struct target_ops
*target
)
1527 struct cleanup
*cleanup
= save_inferior_ptid ();
1529 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1530 n
= base_target
.to_xfer_memory (memaddr
, myaddr
, len
,
1531 write
, attrib
, &base_target
);
1532 do_cleanups (cleanup
);
1537 /* Kill and forget about the inferior process. */
1540 aix_thread_kill (void)
1542 struct cleanup
*cleanup
= save_inferior_ptid ();
1544 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1545 base_target
.to_kill ();
1546 do_cleanups (cleanup
);
1549 /* Clean up after the inferior exits. */
1552 aix_thread_mourn_inferior (void)
1555 base_target
.to_mourn_inferior ();
1558 /* Return whether thread PID is still valid. */
1561 aix_thread_thread_alive (ptid_t ptid
)
1564 return base_target
.to_thread_alive (ptid
);
1566 /* We update the thread list every time the child stops, so all
1567 valid threads should be in the thread list. */
1568 return in_thread_list (ptid
);
1571 /* Return a printable representation of composite PID for use in
1572 "info threads" output. */
1575 aix_thread_pid_to_str (ptid_t ptid
)
1577 static char *ret
= NULL
;
1580 return base_target
.to_pid_to_str (ptid
);
1582 /* Free previous return value; a new one will be allocated by
1586 xasprintf (&ret
, "Thread %ld", ptid_get_tid (ptid
));
1590 /* Return a printable representation of extra information about
1591 THREAD, for use in "info threads" output. */
1594 aix_thread_extra_thread_info (struct thread_info
*thread
)
1596 struct ui_file
*buf
;
1598 pthdb_pthread_t pdtid
;
1600 pthdb_state_t state
;
1601 pthdb_suspendstate_t suspendstate
;
1602 pthdb_detachstate_t detachstate
;
1605 static char *ret
= NULL
;
1607 if (!PD_TID (thread
->ptid
))
1610 buf
= mem_fileopen ();
1612 pdtid
= thread
->private->pdtid
;
1613 tid
= thread
->private->tid
;
1615 if (tid
!= PTHDB_INVALID_TID
)
1616 fprintf_unfiltered (buf
, "tid %d", tid
);
1618 status
= pthdb_pthread_state (pd_session
, pdtid
, &state
);
1619 if (status
!= PTHDB_SUCCESS
)
1621 fprintf_unfiltered (buf
, ", %s", state2str (state
));
1623 status
= pthdb_pthread_suspendstate (pd_session
, pdtid
,
1625 if (status
== PTHDB_SUCCESS
&& suspendstate
== PSS_SUSPENDED
)
1626 fprintf_unfiltered (buf
, ", suspended");
1628 status
= pthdb_pthread_detachstate (pd_session
, pdtid
,
1630 if (status
== PTHDB_SUCCESS
&& detachstate
== PDS_DETACHED
)
1631 fprintf_unfiltered (buf
, ", detached");
1633 pthdb_pthread_cancelpend (pd_session
, pdtid
, &cancelpend
);
1634 if (status
== PTHDB_SUCCESS
&& cancelpend
)
1635 fprintf_unfiltered (buf
, ", cancel pending");
1637 ui_file_write (buf
, "", 1);
1639 xfree (ret
); /* Free old buffer. */
1641 ret
= ui_file_xstrdup (buf
, &length
);
1642 ui_file_delete (buf
);
1647 /* Initialize target aix_thread_ops. */
1650 init_aix_thread_ops (void)
1652 aix_thread_ops
.to_shortname
= "aix-threads";
1653 aix_thread_ops
.to_longname
= "AIX pthread support";
1654 aix_thread_ops
.to_doc
= "AIX pthread support";
1656 aix_thread_ops
.to_attach
= aix_thread_attach
;
1657 aix_thread_ops
.to_detach
= aix_thread_detach
;
1658 aix_thread_ops
.to_resume
= aix_thread_resume
;
1659 aix_thread_ops
.to_wait
= aix_thread_wait
;
1660 aix_thread_ops
.to_fetch_registers
= aix_thread_fetch_registers
;
1661 aix_thread_ops
.to_store_registers
= aix_thread_store_registers
;
1662 aix_thread_ops
.to_xfer_memory
= aix_thread_xfer_memory
;
1663 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1664 debugging when the inferior reaches pd_brk_addr. */
1665 aix_thread_ops
.to_kill
= aix_thread_kill
;
1666 aix_thread_ops
.to_mourn_inferior
= aix_thread_mourn_inferior
;
1667 aix_thread_ops
.to_thread_alive
= aix_thread_thread_alive
;
1668 aix_thread_ops
.to_pid_to_str
= aix_thread_pid_to_str
;
1669 aix_thread_ops
.to_extra_thread_info
= aix_thread_extra_thread_info
;
1670 aix_thread_ops
.to_stratum
= thread_stratum
;
1671 aix_thread_ops
.to_magic
= OPS_MAGIC
;
1674 /* Module startup initialization function, automagically called by
1678 _initialize_aix_thread (void)
1680 init_aix_thread_ops ();
1681 add_target (&aix_thread_ops
);
1683 /* Notice when object files get loaded and unloaded. */
1684 target_new_objfile_chain
= target_new_objfile_hook
;
1685 target_new_objfile_hook
= new_objfile
;
1687 add_show_from_set (add_set_cmd ("aix-thread", no_class
, var_zinteger
,
1688 (char *) &debug_aix_thread
,
1689 "Set debugging of AIX thread module.\n"
1690 "Enables printf debugging output.\n",