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"
55 #include <sys/types.h>
56 #include <sys/ptrace.h>
59 #include <sys/pthdebug.h>
61 /* Whether to emit debugging output. */
62 static int debug_aix_thread
;
64 /* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */
65 #ifndef PTHDB_VERSION_3
66 #define pthdb_tid_t tid_t
69 /* Return whether to treat PID as a debuggable thread id. */
71 #define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0)
73 /* Build a thread ptid. */
74 #define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID)
76 /* Build and lwp ptid. */
77 #define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP)
79 /* pthdb_user_t value that we pass to pthdb functions. 0 causes
80 PTHDB_BAD_USER errors, so use 1. */
84 /* Success and failure values returned by pthdb callbacks. */
86 #define PDC_SUCCESS PTHDB_SUCCESS
87 #define PDC_FAILURE PTHDB_CALLBACK
89 /* Private data attached to each element in GDB's thread list. */
91 struct private_thread_info
{
92 pthdb_pthread_t pdtid
; /* thread's libpthdebug id */
93 pthdb_tid_t tid
; /* kernel thread id */
96 /* Information about a thread of which libpthdebug is aware. */
99 pthdb_pthread_t pdtid
;
104 /* This module's target-specific operations, active while pd_able is true. */
106 static struct target_ops aix_thread_ops
;
108 /* Copy of the target over which ops is pushed. This is more
109 convenient than a pointer to deprecated_child_ops or core_ops,
110 because they lack current_target's default callbacks. */
112 static struct target_ops base_target
;
114 /* Address of the function that libpthread will call when libpthdebug
115 is ready to be initialized. */
117 static CORE_ADDR pd_brk_addr
;
119 /* Whether the current application is debuggable by pthdb. */
121 static int pd_able
= 0;
123 /* Whether a threaded application is being debugged. */
125 static int pd_active
= 0;
127 /* Whether the current architecture is 64-bit.
128 Only valid when pd_able is true. */
132 /* Saved pointer to previous owner of
133 deprecated_target_new_objfile_hook. */
135 static void (*target_new_objfile_chain
)(struct objfile
*);
137 /* Forward declarations for pthdb callbacks. */
139 static int pdc_symbol_addrs (pthdb_user_t
, pthdb_symbol_t
*, int);
140 static int pdc_read_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
141 static int pdc_write_data (pthdb_user_t
, void *, pthdb_addr_t
, size_t);
142 static int pdc_read_regs (pthdb_user_t user
, pthdb_tid_t tid
,
143 unsigned long long flags
,
144 pthdb_context_t
*context
);
145 static int pdc_write_regs (pthdb_user_t user
, pthdb_tid_t tid
,
146 unsigned long long flags
,
147 pthdb_context_t
*context
);
148 static int pdc_alloc (pthdb_user_t
, size_t, void **);
149 static int pdc_realloc (pthdb_user_t
, void *, size_t, void **);
150 static int pdc_dealloc (pthdb_user_t
, void *);
152 /* pthdb callbacks. */
154 static pthdb_callbacks_t pd_callbacks
= {
166 /* Current pthdb session. */
168 static pthdb_session_t pd_session
;
170 /* Return a printable representation of pthdebug function return
174 pd_status2str (int status
)
178 case PTHDB_SUCCESS
: return "SUCCESS";
179 case PTHDB_NOSYS
: return "NOSYS";
180 case PTHDB_NOTSUP
: return "NOTSUP";
181 case PTHDB_BAD_VERSION
: return "BAD_VERSION";
182 case PTHDB_BAD_USER
: return "BAD_USER";
183 case PTHDB_BAD_SESSION
: return "BAD_SESSION";
184 case PTHDB_BAD_MODE
: return "BAD_MODE";
185 case PTHDB_BAD_FLAGS
: return "BAD_FLAGS";
186 case PTHDB_BAD_CALLBACK
: return "BAD_CALLBACK";
187 case PTHDB_BAD_POINTER
: return "BAD_POINTER";
188 case PTHDB_BAD_CMD
: return "BAD_CMD";
189 case PTHDB_BAD_PTHREAD
: return "BAD_PTHREAD";
190 case PTHDB_BAD_ATTR
: return "BAD_ATTR";
191 case PTHDB_BAD_MUTEX
: return "BAD_MUTEX";
192 case PTHDB_BAD_MUTEXATTR
: return "BAD_MUTEXATTR";
193 case PTHDB_BAD_COND
: return "BAD_COND";
194 case PTHDB_BAD_CONDATTR
: return "BAD_CONDATTR";
195 case PTHDB_BAD_RWLOCK
: return "BAD_RWLOCK";
196 case PTHDB_BAD_RWLOCKATTR
: return "BAD_RWLOCKATTR";
197 case PTHDB_BAD_KEY
: return "BAD_KEY";
198 case PTHDB_BAD_PTID
: return "BAD_PTID";
199 case PTHDB_BAD_TID
: return "BAD_TID";
200 case PTHDB_CALLBACK
: return "CALLBACK";
201 case PTHDB_CONTEXT
: return "CONTEXT";
202 case PTHDB_HELD
: return "HELD";
203 case PTHDB_NOT_HELD
: return "NOT_HELD";
204 case PTHDB_MEMORY
: return "MEMORY";
205 case PTHDB_NOT_PTHREADED
: return "NOT_PTHREADED";
206 case PTHDB_SYMBOL
: return "SYMBOL";
207 case PTHDB_NOT_AVAIL
: return "NOT_AVAIL";
208 case PTHDB_INTERNAL
: return "INTERNAL";
209 default: return "UNKNOWN";
213 /* A call to ptrace(REQ, ID, ...) just returned RET. Check for
214 exceptional conditions and either return nonlocally or else return
215 1 for success and 0 for failure. */
218 ptrace_check (int req
, int id
, int ret
)
220 if (ret
== 0 && !errno
)
223 /* According to ptrace(2), ptrace may fail with EPERM if "the
224 Identifier parameter corresponds to a kernel thread which is
225 stopped in kernel mode and whose computational state cannot be
226 read or written." This happens quite often with register reads. */
233 if (ret
== -1 && errno
== EPERM
)
235 if (debug_aix_thread
)
236 fprintf_unfiltered (gdb_stdlog
,
237 "ptrace (%d, %d) = %d (errno = %d)\n",
238 req
, id
, ret
, errno
);
239 return ret
== -1 ? 0 : 1;
243 error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"),
244 req
, id
, ret
, errno
, safe_strerror (errno
));
245 return 0; /* Not reached. */
248 /* Call ptracex (REQ, ID, ADDR, DATA, BUF). Return success. */
251 ptrace64aix (int req
, int id
, long long addr
, int data
, int *buf
)
254 return ptrace_check (req
, id
, ptracex (req
, id
, addr
, data
, buf
));
257 /* Call ptrace (REQ, ID, ADDR, DATA, BUF). Return success. */
260 ptrace32 (int req
, int id
, int *addr
, int data
, int *buf
)
263 return ptrace_check (req
, id
,
264 ptrace (req
, id
, (int *) addr
, data
, buf
));
267 /* If *PIDP is a composite process/thread id, convert it to a
271 pid_to_prc (ptid_t
*ptidp
)
277 *ptidp
= pid_to_ptid (PIDGET (ptid
));
280 /* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
281 the address of SYMBOLS[<i>].name. */
284 pdc_symbol_addrs (pthdb_user_t user
, pthdb_symbol_t
*symbols
, int count
)
286 struct minimal_symbol
*ms
;
290 if (debug_aix_thread
)
291 fprintf_unfiltered (gdb_stdlog
,
292 "pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
293 user
, (long) symbols
, count
);
295 for (i
= 0; i
< count
; i
++)
297 name
= symbols
[i
].name
;
298 if (debug_aix_thread
)
299 fprintf_unfiltered (gdb_stdlog
,
300 " symbols[%d].name = \"%s\"\n", i
, name
);
306 if (!(ms
= lookup_minimal_symbol (name
, NULL
, NULL
)))
308 if (debug_aix_thread
)
309 fprintf_unfiltered (gdb_stdlog
, " returning PDC_FAILURE\n");
312 symbols
[i
].addr
= SYMBOL_VALUE_ADDRESS (ms
);
314 if (debug_aix_thread
)
315 fprintf_unfiltered (gdb_stdlog
, " symbols[%d].addr = %s\n",
316 i
, hex_string (symbols
[i
].addr
));
318 if (debug_aix_thread
)
319 fprintf_unfiltered (gdb_stdlog
, " returning PDC_SUCCESS\n");
323 /* Read registers call back function should be able to read the
324 context information of a debuggee kernel thread from an active
325 process or from a core file. The information should be formatted
326 in context64 form for both 32-bit and 64-bit process.
327 If successful return 0, else non-zero is returned. */
330 pdc_read_regs (pthdb_user_t user
,
332 unsigned long long flags
,
333 pthdb_context_t
*context
)
335 /* This function doesn't appear to be used, so we could probably
336 just return 0 here. HOWEVER, if it is not defined, the OS will
337 complain and several thread debug functions will fail. In case
338 this is needed, I have implemented what I think it should do,
339 however this code is untested. */
341 uint64_t gprs64
[ppc_num_gprs
];
342 uint32_t gprs32
[ppc_num_gprs
];
343 double fprs
[ppc_num_fprs
];
344 struct ptxsprs sprs64
;
345 struct ptsprs sprs32
;
347 if (debug_aix_thread
)
348 fprintf_unfiltered (gdb_stdlog
, "pdc_read_regs tid=%d flags=%s\n",
349 (int) tid
, hex_string (flags
));
351 /* General-purpose registers. */
352 if (flags
& PTHDB_FLAG_GPRS
)
356 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
357 (unsigned long) gprs64
, 0, NULL
))
358 memset (gprs64
, 0, sizeof (gprs64
));
359 memcpy (context
->gpr
, gprs64
, sizeof(gprs64
));
363 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
364 memset (gprs32
, 0, sizeof (gprs32
));
365 memcpy (context
->gpr
, gprs32
, sizeof(gprs32
));
369 /* Floating-point registers. */
370 if (flags
& PTHDB_FLAG_FPRS
)
372 if (!ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
))
373 memset (fprs
, 0, sizeof (fprs
));
374 memcpy (context
->fpr
, fprs
, sizeof(fprs
));
377 /* Special-purpose registers. */
378 if (flags
& PTHDB_FLAG_SPRS
)
382 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
383 (unsigned long) &sprs64
, 0, NULL
))
384 memset (&sprs64
, 0, sizeof (sprs64
));
385 memcpy (&context
->msr
, &sprs64
, sizeof(sprs64
));
389 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
390 memset (&sprs32
, 0, sizeof (sprs32
));
391 memcpy (&context
->msr
, &sprs32
, sizeof(sprs32
));
397 /* Write register function should be able to write requested context
398 information to specified debuggee's kernel thread id.
399 If successful return 0, else non-zero is returned. */
402 pdc_write_regs (pthdb_user_t user
,
404 unsigned long long flags
,
405 pthdb_context_t
*context
)
407 /* This function doesn't appear to be used, so we could probably
408 just return 0 here. HOWEVER, if it is not defined, the OS will
409 complain and several thread debug functions will fail. In case
410 this is needed, I have implemented what I think it should do,
411 however this code is untested. */
413 if (debug_aix_thread
)
414 fprintf_unfiltered (gdb_stdlog
, "pdc_write_regs tid=%d flags=%s\n",
415 (int) tid
, hex_string (flags
));
417 /* General-purpose registers. */
418 if (flags
& PTHDB_FLAG_GPRS
)
421 ptrace64aix (PTT_WRITE_GPRS
, tid
,
422 (unsigned long) context
->gpr
, 0, NULL
);
424 ptrace32 (PTT_WRITE_GPRS
, tid
, (int *) context
->gpr
, 0, NULL
);
427 /* Floating-point registers. */
428 if (flags
& PTHDB_FLAG_FPRS
)
430 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) context
->fpr
, 0, NULL
);
433 /* Special-purpose registers. */
434 if (flags
& PTHDB_FLAG_SPRS
)
438 ptrace64aix (PTT_WRITE_SPRS
, tid
,
439 (unsigned long) &context
->msr
, 0, NULL
);
443 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &context
->msr
, 0, NULL
);
449 /* pthdb callback: read LEN bytes from process ADDR into BUF. */
452 pdc_read_data (pthdb_user_t user
, void *buf
,
453 pthdb_addr_t addr
, size_t len
)
457 if (debug_aix_thread
)
458 fprintf_unfiltered (gdb_stdlog
,
459 "pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
460 user
, (long) buf
, hex_string (addr
), len
);
462 status
= target_read_memory (addr
, buf
, len
);
463 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
465 if (debug_aix_thread
)
466 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n",
467 status
, pd_status2str (ret
));
471 /* pthdb callback: write LEN bytes from BUF to process ADDR. */
474 pdc_write_data (pthdb_user_t user
, void *buf
,
475 pthdb_addr_t addr
, size_t len
)
479 if (debug_aix_thread
)
480 fprintf_unfiltered (gdb_stdlog
,
481 "pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
482 user
, (long) buf
, hex_string (addr
), len
);
484 status
= target_write_memory (addr
, buf
, len
);
485 ret
= status
== 0 ? PDC_SUCCESS
: PDC_FAILURE
;
487 if (debug_aix_thread
)
488 fprintf_unfiltered (gdb_stdlog
, " status=%d, returning %s\n", status
,
489 pd_status2str (ret
));
493 /* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
497 pdc_alloc (pthdb_user_t user
, size_t len
, void **bufp
)
499 if (debug_aix_thread
)
500 fprintf_unfiltered (gdb_stdlog
,
501 "pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
502 user
, len
, (long) bufp
);
503 *bufp
= xmalloc (len
);
504 if (debug_aix_thread
)
505 fprintf_unfiltered (gdb_stdlog
,
506 " malloc returned 0x%lx\n", (long) *bufp
);
508 /* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
511 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
514 /* pthdb callback: reallocate BUF, which was allocated by the alloc or
515 realloc callback, so that it contains LEN bytes, and store a
516 pointer to the result in BUFP. */
519 pdc_realloc (pthdb_user_t user
, void *buf
, size_t len
, void **bufp
)
521 if (debug_aix_thread
)
522 fprintf_unfiltered (gdb_stdlog
,
523 "pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
524 user
, (long) buf
, len
, (long) bufp
);
525 *bufp
= xrealloc (buf
, len
);
526 if (debug_aix_thread
)
527 fprintf_unfiltered (gdb_stdlog
,
528 " realloc returned 0x%lx\n", (long) *bufp
);
529 return *bufp
? PDC_SUCCESS
: PDC_FAILURE
;
532 /* pthdb callback: free BUF, which was allocated by the alloc or
536 pdc_dealloc (pthdb_user_t user
, void *buf
)
538 if (debug_aix_thread
)
539 fprintf_unfiltered (gdb_stdlog
,
540 "pdc_free (user = %ld, buf = 0x%lx)\n", user
,
546 /* Return a printable representation of pthread STATE. */
549 state2str (pthdb_state_t state
)
554 /* i18n: Like "Thread-Id %d, [state] idle" */
555 return _("idle"); /* being created */
557 /* i18n: Like "Thread-Id %d, [state] running" */
558 return _("running"); /* running */
560 /* i18n: Like "Thread-Id %d, [state] sleeping" */
561 return _("sleeping"); /* awaiting an event */
563 /* i18n: Like "Thread-Id %d, [state] ready" */
564 return _("ready"); /* runnable */
566 /* i18n: Like "Thread-Id %d, [state] finished" */
567 return _("finished"); /* awaiting a join/detach */
569 /* i18n: Like "Thread-Id %d, [state] unknown" */
574 /* qsort() comparison function for sorting pd_thread structs by pthid. */
577 pcmp (const void *p1v
, const void *p2v
)
579 struct pd_thread
*p1
= (struct pd_thread
*) p1v
;
580 struct pd_thread
*p2
= (struct pd_thread
*) p2v
;
581 return p1
->pthid
< p2
->pthid
? -1 : p1
->pthid
> p2
->pthid
;
584 /* iterate_over_threads() callback for counting GDB threads. */
587 giter_count (struct thread_info
*thread
, void *countp
)
593 /* iterate_over_threads() callback for accumulating GDB thread pids. */
596 giter_accum (struct thread_info
*thread
, void *bufp
)
598 **(struct thread_info
***) bufp
= thread
;
599 (*(struct thread_info
***) bufp
)++;
603 /* ptid comparison function */
606 ptid_cmp (ptid_t ptid1
, ptid_t ptid2
)
610 if (ptid_get_pid (ptid1
) < ptid_get_pid (ptid2
))
612 else if (ptid_get_pid (ptid1
) > ptid_get_pid (ptid2
))
614 else if (ptid_get_tid (ptid1
) < ptid_get_tid (ptid2
))
616 else if (ptid_get_tid (ptid1
) > ptid_get_tid (ptid2
))
618 else if (ptid_get_lwp (ptid1
) < ptid_get_lwp (ptid2
))
620 else if (ptid_get_lwp (ptid1
) > ptid_get_lwp (ptid2
))
626 /* qsort() comparison function for sorting thread_info structs by pid. */
629 gcmp (const void *t1v
, const void *t2v
)
631 struct thread_info
*t1
= *(struct thread_info
**) t1v
;
632 struct thread_info
*t2
= *(struct thread_info
**) t2v
;
633 return ptid_cmp (t1
->ptid
, t2
->ptid
);
636 /* Search through the list of all kernel threads for the thread
637 that has stopped on a SIGTRAP signal, and return its TID.
638 Return 0 if none found. */
641 get_signaled_thread (void)
643 struct thrdsinfo64 thrinf
;
644 pthdb_tid_t ktid
= 0;
647 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
648 extern int getthrds (pid_t
, struct thrdsinfo64
*,
649 int, pthdb_tid_t
*, int);
653 if (getthrds (PIDGET (inferior_ptid
), &thrinf
,
654 sizeof (thrinf
), &ktid
, 1) != 1)
657 if (thrinf
.ti_cursig
== SIGTRAP
)
658 return thrinf
.ti_tid
;
661 /* Didn't find any thread stopped on a SIGTRAP signal. */
665 /* Synchronize GDB's thread list with libpthdebug's.
667 There are some benefits of doing this every time the inferior stops:
669 - allows users to run thread-specific commands without needing to
670 run "info threads" first
672 - helps pthdb_tid_pthread() work properly (see "libpthdebug
673 peculiarities" at the top of this module)
675 - simplifies the demands placed on libpthdebug, which seems to
676 have difficulty with certain call patterns */
679 sync_threadlists (void)
681 int cmd
, status
, infpid
;
682 int pcount
, psize
, pi
, gcount
, gi
;
683 struct pd_thread
*pbuf
;
684 struct thread_info
**gbuf
, **g
, *thread
;
685 pthdb_pthread_t pdtid
;
689 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
693 pbuf
= (struct pd_thread
*) xmalloc (psize
* sizeof *pbuf
);
695 for (cmd
= PTHDB_LIST_FIRST
;; cmd
= PTHDB_LIST_NEXT
)
697 status
= pthdb_pthread (pd_session
, &pdtid
, cmd
);
698 if (status
!= PTHDB_SUCCESS
|| pdtid
== PTHDB_INVALID_PTHREAD
)
701 status
= pthdb_pthread_ptid (pd_session
, pdtid
, &pthid
);
702 if (status
!= PTHDB_SUCCESS
|| pthid
== PTHDB_INVALID_PTID
)
708 pbuf
= (struct pd_thread
*) xrealloc (pbuf
,
709 psize
* sizeof *pbuf
);
711 pbuf
[pcount
].pdtid
= pdtid
;
712 pbuf
[pcount
].pthid
= pthid
;
716 for (pi
= 0; pi
< pcount
; pi
++)
718 status
= pthdb_pthread_tid (pd_session
, pbuf
[pi
].pdtid
, &tid
);
719 if (status
!= PTHDB_SUCCESS
)
720 tid
= PTHDB_INVALID_TID
;
724 qsort (pbuf
, pcount
, sizeof *pbuf
, pcmp
);
726 /* Accumulate an array of GDB threads sorted by pid. */
729 iterate_over_threads (giter_count
, &gcount
);
730 g
= gbuf
= (struct thread_info
**) xmalloc (gcount
* sizeof *gbuf
);
731 iterate_over_threads (giter_accum
, &g
);
732 qsort (gbuf
, gcount
, sizeof *gbuf
, gcmp
);
734 /* Apply differences between the two arrays to GDB's thread list. */
736 infpid
= PIDGET (inferior_ptid
);
737 for (pi
= gi
= 0; pi
< pcount
|| gi
< gcount
;)
741 delete_thread (gbuf
[gi
]->ptid
);
744 else if (gi
== gcount
)
746 thread
= add_thread (BUILD_THREAD (pbuf
[pi
].pthid
, infpid
));
747 thread
->private = xmalloc (sizeof (struct private_thread_info
));
748 thread
->private->pdtid
= pbuf
[pi
].pdtid
;
749 thread
->private->tid
= pbuf
[pi
].tid
;
757 pptid
= BUILD_THREAD (pbuf
[pi
].pthid
, infpid
);
758 gptid
= gbuf
[gi
]->ptid
;
759 pdtid
= pbuf
[pi
].pdtid
;
762 cmp_result
= ptid_cmp (pptid
, gptid
);
766 gbuf
[gi
]->private->pdtid
= pdtid
;
767 gbuf
[gi
]->private->tid
= tid
;
771 else if (cmp_result
> 0)
773 delete_thread (gptid
);
778 thread
= add_thread (pptid
);
779 thread
->private = xmalloc (sizeof (struct private_thread_info
));
780 thread
->private->pdtid
= pdtid
;
781 thread
->private->tid
= tid
;
791 /* Iterate_over_threads() callback for locating a thread, using
792 the TID of its associated kernel thread. */
795 iter_tid (struct thread_info
*thread
, void *tidp
)
797 const pthdb_tid_t tid
= *(pthdb_tid_t
*)tidp
;
799 return (thread
->private->tid
== tid
);
802 /* Synchronize libpthdebug's state with the inferior and with GDB,
803 generate a composite process/thread <pid> for the current thread,
804 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
807 pd_update (int set_infpid
)
812 struct thread_info
*thread
= NULL
;
815 return inferior_ptid
;
817 status
= pthdb_session_update (pd_session
);
818 if (status
!= PTHDB_SUCCESS
)
819 return inferior_ptid
;
823 /* Define "current thread" as one that just received a trap signal. */
825 tid
= get_signaled_thread ();
827 thread
= iterate_over_threads (iter_tid
, &tid
);
829 ptid
= inferior_ptid
;
834 inferior_ptid
= ptid
;
839 /* Try to start debugging threads in the current process.
840 If successful and SET_INFPID, set inferior_ptid to reflect the
844 pd_activate (int set_infpid
)
848 status
= pthdb_session_init (PD_USER
, arch64
? PEM_64BIT
: PEM_32BIT
,
849 PTHDB_FLAG_REGS
, &pd_callbacks
,
851 if (status
!= PTHDB_SUCCESS
)
853 return inferior_ptid
;
856 return pd_update (set_infpid
);
859 /* Undo the effects of pd_activate(). */
866 pthdb_session_destroy (pd_session
);
868 pid_to_prc (&inferior_ptid
);
872 /* An object file has just been loaded. Check whether the current
873 application is pthreaded, and if so, prepare for thread debugging. */
880 struct minimal_symbol
*ms
;
882 /* Don't initialize twice. */
886 /* Check application word size. */
887 arch64
= register_size (current_gdbarch
, 0) == 8;
889 /* Check whether the application is pthreaded. */
891 status
= pthdb_session_pthreaded (PD_USER
, PTHDB_FLAG_REGS
,
892 &pd_callbacks
, &stub_name
);
893 if ((status
!= PTHDB_SUCCESS
&&
894 status
!= PTHDB_NOT_PTHREADED
) || !stub_name
)
897 /* Set a breakpoint on the returned stub function. */
898 if (!(ms
= lookup_minimal_symbol (stub_name
, NULL
, NULL
)))
900 pd_brk_addr
= SYMBOL_VALUE_ADDRESS (ms
);
901 if (!create_thread_event_breakpoint (pd_brk_addr
))
904 /* Prepare for thread debugging. */
905 base_target
= current_target
;
906 push_target (&aix_thread_ops
);
909 /* If we're debugging a core file or an attached inferior, the
910 pthread library may already have been initialized, so try to
911 activate thread debugging. */
915 /* Undo the effects of pd_enable(). */
925 unpush_target (&aix_thread_ops
);
928 /* deprecated_target_new_objfile_hook callback.
930 If OBJFILE is non-null, check whether a threaded application is
931 being debugged, and if so, prepare for thread debugging.
933 If OBJFILE is null, stop debugging threads. */
936 new_objfile (struct objfile
*objfile
)
943 if (target_new_objfile_chain
)
944 target_new_objfile_chain (objfile
);
947 /* Attach to process specified by ARGS. */
950 aix_thread_attach (char *args
, int from_tty
)
952 base_target
.to_attach (args
, from_tty
);
956 /* Detach from the process attached to by aix_thread_attach(). */
959 aix_thread_detach (char *args
, int from_tty
)
962 base_target
.to_detach (args
, from_tty
);
965 /* Tell the inferior process to continue running thread PID if != -1
966 and all threads otherwise. */
969 aix_thread_resume (ptid_t ptid
, int step
, enum target_signal sig
)
971 struct thread_info
*thread
;
976 struct cleanup
*cleanup
= save_inferior_ptid ();
977 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
978 base_target
.to_resume (ptid
, step
, sig
);
979 do_cleanups (cleanup
);
983 thread
= find_thread_pid (ptid
);
985 error (_("aix-thread resume: unknown pthread %ld"),
988 tid
[0] = thread
->private->tid
;
989 if (tid
[0] == PTHDB_INVALID_TID
)
990 error (_("aix-thread resume: no tid for pthread %ld"),
995 ptrace64aix (PTT_CONTINUE
, tid
[0], 1,
996 target_signal_to_host (sig
), (int *) tid
);
998 ptrace32 (PTT_CONTINUE
, tid
[0], (int *) 1,
999 target_signal_to_host (sig
), (int *) tid
);
1003 /* Wait for thread/process ID if != -1 or for any thread otherwise.
1004 If an error occurs, return -1, else return the pid of the stopped
1008 aix_thread_wait (ptid_t ptid
, struct target_waitstatus
*status
)
1010 struct cleanup
*cleanup
= save_inferior_ptid ();
1014 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1015 ptid
= base_target
.to_wait (ptid
, status
);
1016 do_cleanups (cleanup
);
1018 if (PIDGET (ptid
) == -1)
1019 return pid_to_ptid (-1);
1021 /* Check whether libpthdebug might be ready to be initialized. */
1022 if (!pd_active
&& status
->kind
== TARGET_WAITKIND_STOPPED
&&
1023 status
->value
.sig
== TARGET_SIGNAL_TRAP
&&
1024 read_pc_pid (ptid
) - DECR_PC_AFTER_BREAK
== pd_brk_addr
)
1025 return pd_activate (0);
1027 return pd_update (0);
1030 /* Record that the 64-bit general-purpose registers contain VALS. */
1033 supply_gprs64 (struct regcache
*regcache
, uint64_t *vals
)
1035 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1038 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1039 regcache_raw_supply (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1040 (char *) (vals
+ regno
));
1043 /* Record that 32-bit register REGNO contains VAL. */
1046 supply_reg32 (struct regcache
*regcache
, int regno
, uint32_t val
)
1048 regcache_raw_supply (regcache
, regno
, (char *) &val
);
1051 /* Record that the floating-point registers contain VALS. */
1054 supply_fprs (struct regcache
*regcache
, double *vals
)
1056 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1059 /* This function should never be called on architectures without
1060 floating-point registers. */
1061 gdb_assert (ppc_floating_point_unit_p (current_gdbarch
));
1063 for (regno
= 0; regno
< ppc_num_fprs
; regno
++)
1064 regcache_raw_supply (regcache
, regno
+ tdep
->ppc_fp0_regnum
,
1065 (char *) (vals
+ regno
));
1068 /* Predicate to test whether given register number is a "special" register. */
1070 special_register_p (int regno
)
1072 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1074 return regno
== PC_REGNUM
1075 || regno
== tdep
->ppc_ps_regnum
1076 || regno
== tdep
->ppc_cr_regnum
1077 || regno
== tdep
->ppc_lr_regnum
1078 || regno
== tdep
->ppc_ctr_regnum
1079 || regno
== tdep
->ppc_xer_regnum
1080 || (tdep
->ppc_fpscr_regnum
>= 0 && regno
== tdep
->ppc_fpscr_regnum
)
1081 || (tdep
->ppc_mq_regnum
>= 0 && regno
== tdep
->ppc_mq_regnum
);
1085 /* Record that the special registers contain the specified 64-bit and
1089 supply_sprs64 (struct regcache
*regcache
,
1090 uint64_t iar
, uint64_t msr
, uint32_t cr
,
1091 uint64_t lr
, uint64_t ctr
, uint32_t xer
,
1094 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1096 regcache_raw_supply (regcache
, PC_REGNUM
, (char *) &iar
);
1097 regcache_raw_supply (regcache
, tdep
->ppc_ps_regnum
, (char *) &msr
);
1098 regcache_raw_supply (regcache
, tdep
->ppc_cr_regnum
, (char *) &cr
);
1099 regcache_raw_supply (regcache
, tdep
->ppc_lr_regnum
, (char *) &lr
);
1100 regcache_raw_supply (regcache
, tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1101 regcache_raw_supply (regcache
, tdep
->ppc_xer_regnum
, (char *) &xer
);
1102 if (tdep
->ppc_fpscr_regnum
>= 0)
1103 regcache_raw_supply (regcache
, tdep
->ppc_fpscr_regnum
,
1107 /* Record that the special registers contain the specified 32-bit
1111 supply_sprs32 (struct regcache
*regcache
,
1112 uint32_t iar
, uint32_t msr
, uint32_t cr
,
1113 uint32_t lr
, uint32_t ctr
, uint32_t xer
,
1116 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1118 regcache_raw_supply (regcache
, PC_REGNUM
, (char *) &iar
);
1119 regcache_raw_supply (regcache
, tdep
->ppc_ps_regnum
, (char *) &msr
);
1120 regcache_raw_supply (regcache
, tdep
->ppc_cr_regnum
, (char *) &cr
);
1121 regcache_raw_supply (regcache
, tdep
->ppc_lr_regnum
, (char *) &lr
);
1122 regcache_raw_supply (regcache
, tdep
->ppc_ctr_regnum
, (char *) &ctr
);
1123 regcache_raw_supply (regcache
, tdep
->ppc_xer_regnum
, (char *) &xer
);
1124 if (tdep
->ppc_fpscr_regnum
>= 0)
1125 regcache_raw_supply (regcache
, tdep
->ppc_fpscr_regnum
,
1129 /* Fetch all registers from pthread PDTID, which doesn't have a kernel
1132 There's no way to query a single register from a non-kernel
1133 pthread, so there's no need for a single-register version of this
1137 fetch_regs_user_thread (struct regcache
*regcache
, pthdb_pthread_t pdtid
)
1139 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1141 pthdb_context_t ctx
;
1143 if (debug_aix_thread
)
1144 fprintf_unfiltered (gdb_stdlog
,
1145 "fetch_regs_user_thread %lx\n", (long) pdtid
);
1146 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1147 if (status
!= PTHDB_SUCCESS
)
1148 error (_("aix-thread: fetch_registers: pthdb_pthread_context returned %s"),
1149 pd_status2str (status
));
1151 /* General-purpose registers. */
1154 supply_gprs64 (regcache
, ctx
.gpr
);
1156 for (i
= 0; i
< ppc_num_gprs
; i
++)
1157 supply_reg32 (regcache
, tdep
->ppc_gp0_regnum
+ i
, ctx
.gpr
[i
]);
1159 /* Floating-point registers. */
1161 if (ppc_floating_point_unit_p (current_gdbarch
))
1162 supply_fprs (regcache
, ctx
.fpr
);
1164 /* Special registers. */
1167 supply_sprs64 (regcache
, ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
,
1168 ctx
.xer
, ctx
.fpscr
);
1170 supply_sprs32 (regcache
, ctx
.iar
, ctx
.msr
, ctx
.cr
, ctx
.lr
, ctx
.ctr
,
1171 ctx
.xer
, ctx
.fpscr
);
1174 /* Fetch register REGNO if != -1 or all registers otherwise from
1177 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1178 SPRs, but there's no way to query individual registers within those
1179 groups. Therefore, if REGNO != -1, this function fetches an entire
1182 Unfortunately, kernel thread register queries often fail with
1183 EPERM, indicating that the thread is in kernel space. This breaks
1184 backtraces of threads other than the current one. To make that
1185 breakage obvious without throwing an error to top level (which is
1186 bad e.g. during "info threads" output), zero registers that can't
1190 fetch_regs_kernel_thread (struct regcache
*regcache
, int regno
,
1193 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1194 uint64_t gprs64
[ppc_num_gprs
];
1195 uint32_t gprs32
[ppc_num_gprs
];
1196 double fprs
[ppc_num_fprs
];
1197 struct ptxsprs sprs64
;
1198 struct ptsprs sprs32
;
1201 if (debug_aix_thread
)
1202 fprintf_unfiltered (gdb_stdlog
,
1203 "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
1204 (long) tid
, regno
, arch64
);
1206 /* General-purpose registers. */
1208 || (tdep
->ppc_gp0_regnum
<= regno
1209 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_gprs
))
1213 if (!ptrace64aix (PTT_READ_GPRS
, tid
,
1214 (unsigned long) gprs64
, 0, NULL
))
1215 memset (gprs64
, 0, sizeof (gprs64
));
1216 supply_gprs64 (regcache
, gprs64
);
1220 if (!ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
))
1221 memset (gprs32
, 0, sizeof (gprs32
));
1222 for (i
= 0; i
< ppc_num_gprs
; i
++)
1223 supply_reg32 (regcache
, tdep
->ppc_gp0_regnum
+ i
, gprs32
[i
]);
1227 /* Floating-point registers. */
1229 if (ppc_floating_point_unit_p (current_gdbarch
)
1231 || (regno
>= tdep
->ppc_fp0_regnum
1232 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1234 if (!ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
))
1235 memset (fprs
, 0, sizeof (fprs
));
1236 supply_fprs (regcache
, fprs
);
1239 /* Special-purpose registers. */
1241 if (regno
== -1 || special_register_p (regno
))
1245 if (!ptrace64aix (PTT_READ_SPRS
, tid
,
1246 (unsigned long) &sprs64
, 0, NULL
))
1247 memset (&sprs64
, 0, sizeof (sprs64
));
1248 supply_sprs64 (regcache
, sprs64
.pt_iar
, sprs64
.pt_msr
,
1249 sprs64
.pt_cr
, sprs64
.pt_lr
, sprs64
.pt_ctr
,
1250 sprs64
.pt_xer
, sprs64
.pt_fpscr
);
1254 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1256 if (!ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
))
1257 memset (&sprs32
, 0, sizeof (sprs32
));
1258 supply_sprs32 (regcache
, sprs32
.pt_iar
, sprs32
.pt_msr
, sprs32
.pt_cr
,
1259 sprs32
.pt_lr
, sprs32
.pt_ctr
, sprs32
.pt_xer
,
1262 if (tdep
->ppc_mq_regnum
>= 0)
1263 regcache_raw_supply (regcache
, tdep
->ppc_mq_regnum
,
1264 (char *) &sprs32
.pt_mq
);
1269 /* Fetch register REGNO if != -1 or all registers otherwise in the
1270 thread/process specified by inferior_ptid. */
1273 aix_thread_fetch_registers (int regno
)
1275 struct thread_info
*thread
;
1278 if (!PD_TID (inferior_ptid
))
1279 base_target
.to_fetch_registers (regno
);
1282 thread
= find_thread_pid (inferior_ptid
);
1283 tid
= thread
->private->tid
;
1285 if (tid
== PTHDB_INVALID_TID
)
1286 fetch_regs_user_thread (current_regcache
, thread
->private->pdtid
);
1288 fetch_regs_kernel_thread (current_regcache
, regno
, tid
);
1292 /* Store the gp registers into an array of uint32_t or uint64_t. */
1295 fill_gprs64 (const struct regcache
*regcache
, uint64_t *vals
)
1297 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1300 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1301 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ regno
))
1302 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1307 fill_gprs32 (const struct regcache
*regcache
, uint32_t *vals
)
1309 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1312 for (regno
= 0; regno
< ppc_num_gprs
; regno
++)
1313 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ regno
))
1314 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ regno
,
1318 /* Store the floating point registers into a double array. */
1320 fill_fprs (const struct regcache
*regcache
, double *vals
)
1322 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1325 /* This function should never be called on architectures without
1326 floating-point registers. */
1327 gdb_assert (ppc_floating_point_unit_p (current_gdbarch
));
1329 for (regno
= tdep
->ppc_fp0_regnum
;
1330 regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
;
1332 if (regcache_valid_p (regcache
, regno
))
1333 regcache_raw_collect (regcache
, regno
, vals
+ regno
);
1336 /* Store the special registers into the specified 64-bit and 32-bit
1340 fill_sprs64 (const struct regcache
*regcache
,
1341 uint64_t *iar
, uint64_t *msr
, uint32_t *cr
,
1342 uint64_t *lr
, uint64_t *ctr
, uint32_t *xer
,
1345 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1347 /* Verify that the size of the size of the IAR buffer is the
1348 same as the raw size of the PC (in the register cache). If
1349 they're not, then either GDB has been built incorrectly, or
1350 there's some other kind of internal error. To be really safe,
1351 we should check all of the sizes. */
1352 gdb_assert (sizeof (*iar
) == register_size (current_gdbarch
, PC_REGNUM
));
1354 if (regcache_valid_p (regcache
, PC_REGNUM
))
1355 regcache_raw_collect (regcache
, PC_REGNUM
, iar
);
1356 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1357 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1358 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1359 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1360 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1361 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1362 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1363 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1364 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1365 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1366 if (tdep
->ppc_fpscr_regnum
>= 0
1367 && regcache_valid_p (regcache
, tdep
->ppc_fpscr_regnum
))
1368 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1372 fill_sprs32 (const struct regcache
*regcache
,
1373 uint32_t *iar
, uint32_t *msr
, uint32_t *cr
,
1374 uint32_t *lr
, uint32_t *ctr
, uint32_t *xer
,
1377 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1379 /* Verify that the size of the size of the IAR buffer is the
1380 same as the raw size of the PC (in the register cache). If
1381 they're not, then either GDB has been built incorrectly, or
1382 there's some other kind of internal error. To be really safe,
1383 we should check all of the sizes. */
1384 gdb_assert (sizeof (*iar
) == register_size (current_gdbarch
, PC_REGNUM
));
1386 if (regcache_valid_p (regcache
, PC_REGNUM
))
1387 regcache_raw_collect (regcache
, PC_REGNUM
, iar
);
1388 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1389 regcache_raw_collect (regcache
, tdep
->ppc_ps_regnum
, msr
);
1390 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1391 regcache_raw_collect (regcache
, tdep
->ppc_cr_regnum
, cr
);
1392 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1393 regcache_raw_collect (regcache
, tdep
->ppc_lr_regnum
, lr
);
1394 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1395 regcache_raw_collect (regcache
, tdep
->ppc_ctr_regnum
, ctr
);
1396 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1397 regcache_raw_collect (regcache
, tdep
->ppc_xer_regnum
, xer
);
1398 if (tdep
->ppc_fpscr_regnum
>= 0
1399 && regcache_valid_p (regcache
, tdep
->ppc_fpscr_regnum
))
1400 regcache_raw_collect (regcache
, tdep
->ppc_fpscr_regnum
, fpscr
);
1403 /* Store all registers into pthread PDTID, which doesn't have a kernel
1406 It's possible to store a single register into a non-kernel pthread,
1407 but I doubt it's worth the effort. */
1410 store_regs_user_thread (const struct regcache
*regcache
, pthdb_pthread_t pdtid
)
1412 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1414 pthdb_context_t ctx
;
1419 if (debug_aix_thread
)
1420 fprintf_unfiltered (gdb_stdlog
,
1421 "store_regs_user_thread %lx\n", (long) pdtid
);
1423 /* Retrieve the thread's current context for its non-register
1425 status
= pthdb_pthread_context (pd_session
, pdtid
, &ctx
);
1426 if (status
!= PTHDB_SUCCESS
)
1427 error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"),
1428 pd_status2str (status
));
1430 /* Collect general-purpose register values from the regcache. */
1432 for (i
= 0; i
< ppc_num_gprs
; i
++)
1433 if (regcache_valid_p (regcache
, tdep
->ppc_gp0_regnum
+ i
))
1437 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1443 regcache_raw_collect (regcache
, tdep
->ppc_gp0_regnum
+ i
,
1449 /* Collect floating-point register values from the regcache. */
1450 if (ppc_floating_point_unit_p (current_gdbarch
))
1451 fill_fprs (regcache
, ctx
.fpr
);
1453 /* Special registers (always kept in ctx as 64 bits). */
1456 fill_sprs64 (regcache
, &ctx
.iar
, &ctx
.msr
, &ctx
.cr
, &ctx
.lr
, &ctx
.ctr
,
1457 &ctx
.xer
, &ctx
.fpscr
);
1461 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1462 Solution: use 32-bit temp variables. */
1463 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1466 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
, &tmp_ctr
,
1467 &tmp_xer
, &tmp_fpscr
);
1468 if (regcache_valid_p (regcache
, PC_REGNUM
))
1470 if (regcache_valid_p (regcache
, tdep
->ppc_ps_regnum
))
1472 if (regcache_valid_p (regcache
, tdep
->ppc_cr_regnum
))
1474 if (regcache_valid_p (regcache
, tdep
->ppc_lr_regnum
))
1476 if (regcache_valid_p (regcache
, tdep
->ppc_ctr_regnum
))
1478 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1480 if (regcache_valid_p (regcache
, tdep
->ppc_xer_regnum
))
1481 ctx
.fpscr
= tmp_fpscr
;
1484 status
= pthdb_pthread_setcontext (pd_session
, pdtid
, &ctx
);
1485 if (status
!= PTHDB_SUCCESS
)
1486 error (_("aix-thread: store_registers: pthdb_pthread_setcontext returned %s"),
1487 pd_status2str (status
));
1490 /* Store register REGNO if != -1 or all registers otherwise into
1493 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1494 SPRs, but there's no way to set individual registers within those
1495 groups. Therefore, if REGNO != -1, this function stores an entire
1499 store_regs_kernel_thread (const struct regcache
*regcache
, int regno
,
1502 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
1503 uint64_t gprs64
[ppc_num_gprs
];
1504 uint32_t gprs32
[ppc_num_gprs
];
1505 double fprs
[ppc_num_fprs
];
1506 struct ptxsprs sprs64
;
1507 struct ptsprs sprs32
;
1510 if (debug_aix_thread
)
1511 fprintf_unfiltered (gdb_stdlog
,
1512 "store_regs_kernel_thread tid=%lx regno=%d\n",
1515 /* General-purpose registers. */
1517 || (tdep
->ppc_gp0_regnum
<= regno
1518 && regno
< tdep
->ppc_gp0_regnum
+ ppc_num_fprs
))
1522 /* Pre-fetch: some regs may not be in the cache. */
1523 ptrace64aix (PTT_READ_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1524 fill_gprs64 (regcache
, gprs64
);
1525 ptrace64aix (PTT_WRITE_GPRS
, tid
, (unsigned long) gprs64
, 0, NULL
);
1529 /* Pre-fetch: some regs may not be in the cache. */
1530 ptrace32 (PTT_READ_GPRS
, tid
, gprs32
, 0, NULL
);
1531 fill_gprs32 (regcache
, gprs32
);
1532 ptrace32 (PTT_WRITE_GPRS
, tid
, gprs32
, 0, NULL
);
1536 /* Floating-point registers. */
1538 if (ppc_floating_point_unit_p (current_gdbarch
)
1540 || (regno
>= tdep
->ppc_fp0_regnum
1541 && regno
< tdep
->ppc_fp0_regnum
+ ppc_num_fprs
)))
1543 /* Pre-fetch: some regs may not be in the cache. */
1544 ptrace32 (PTT_READ_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1545 fill_fprs (regcache
, fprs
);
1546 ptrace32 (PTT_WRITE_FPRS
, tid
, (int *) fprs
, 0, NULL
);
1549 /* Special-purpose registers. */
1551 if (regno
== -1 || special_register_p (regno
))
1555 /* Pre-fetch: some registers won't be in the cache. */
1556 ptrace64aix (PTT_READ_SPRS
, tid
,
1557 (unsigned long) &sprs64
, 0, NULL
);
1558 fill_sprs64 (regcache
, &sprs64
.pt_iar
, &sprs64
.pt_msr
,
1559 &sprs64
.pt_cr
, &sprs64
.pt_lr
, &sprs64
.pt_ctr
,
1560 &sprs64
.pt_xer
, &sprs64
.pt_fpscr
);
1561 ptrace64aix (PTT_WRITE_SPRS
, tid
,
1562 (unsigned long) &sprs64
, 0, NULL
);
1566 /* The contents of "struct ptspr" were declared as "unsigned
1567 long" up to AIX 5.2, but are "unsigned int" since 5.3.
1568 Use temporaries to work around this problem. Also, add an
1569 assert here to make sure we fail if the system header files
1570 use "unsigned long", and the size of that type is not what
1571 the headers expect. */
1572 uint32_t tmp_iar
, tmp_msr
, tmp_cr
, tmp_lr
, tmp_ctr
, tmp_xer
,
1575 gdb_assert (sizeof (sprs32
.pt_iar
) == 4);
1577 /* Pre-fetch: some registers won't be in the cache. */
1578 ptrace32 (PTT_READ_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1580 fill_sprs32 (regcache
, &tmp_iar
, &tmp_msr
, &tmp_cr
, &tmp_lr
,
1581 &tmp_ctr
, &tmp_xer
, &tmp_fpscr
);
1583 sprs32
.pt_iar
= tmp_iar
;
1584 sprs32
.pt_msr
= tmp_msr
;
1585 sprs32
.pt_cr
= tmp_cr
;
1586 sprs32
.pt_lr
= tmp_lr
;
1587 sprs32
.pt_ctr
= tmp_ctr
;
1588 sprs32
.pt_xer
= tmp_xer
;
1589 sprs32
.pt_fpscr
= tmp_fpscr
;
1591 if (tdep
->ppc_mq_regnum
>= 0)
1592 if (regcache_valid_p (regcache
, tdep
->ppc_mq_regnum
))
1593 regcache_raw_collect (regcache
, tdep
->ppc_mq_regnum
,
1596 ptrace32 (PTT_WRITE_SPRS
, tid
, (int *) &sprs32
, 0, NULL
);
1601 /* Store gdb's current view of the register set into the
1602 thread/process specified by inferior_ptid. */
1605 aix_thread_store_registers (int regno
)
1607 struct thread_info
*thread
;
1610 if (!PD_TID (inferior_ptid
))
1611 base_target
.to_store_registers (regno
);
1614 thread
= find_thread_pid (inferior_ptid
);
1615 tid
= thread
->private->tid
;
1617 if (tid
== PTHDB_INVALID_TID
)
1618 store_regs_user_thread (current_regcache
, thread
->private->pdtid
);
1620 store_regs_kernel_thread (current_regcache
, regno
, tid
);
1624 /* Attempt a transfer all LEN bytes starting at OFFSET between the
1625 inferior's OBJECT:ANNEX space and GDB's READBUF/WRITEBUF buffer.
1626 Return the number of bytes actually transferred. */
1629 aix_thread_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1630 const char *annex
, gdb_byte
*readbuf
,
1631 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1633 struct cleanup
*old_chain
= save_inferior_ptid ();
1636 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1637 xfer
= base_target
.to_xfer_partial (ops
, object
, annex
,
1638 readbuf
, writebuf
, offset
, len
);
1640 do_cleanups (old_chain
);
1644 /* Kill and forget about the inferior process. */
1647 aix_thread_kill (void)
1649 struct cleanup
*cleanup
= save_inferior_ptid ();
1651 inferior_ptid
= pid_to_ptid (PIDGET (inferior_ptid
));
1652 base_target
.to_kill ();
1653 do_cleanups (cleanup
);
1656 /* Clean up after the inferior exits. */
1659 aix_thread_mourn_inferior (void)
1662 base_target
.to_mourn_inferior ();
1665 /* Return whether thread PID is still valid. */
1668 aix_thread_thread_alive (ptid_t ptid
)
1671 return base_target
.to_thread_alive (ptid
);
1673 /* We update the thread list every time the child stops, so all
1674 valid threads should be in the thread list. */
1675 return in_thread_list (ptid
);
1678 /* Return a printable representation of composite PID for use in
1679 "info threads" output. */
1682 aix_thread_pid_to_str (ptid_t ptid
)
1684 static char *ret
= NULL
;
1687 return base_target
.to_pid_to_str (ptid
);
1689 /* Free previous return value; a new one will be allocated by
1693 ret
= xstrprintf (_("Thread %ld"), ptid_get_tid (ptid
));
1697 /* Return a printable representation of extra information about
1698 THREAD, for use in "info threads" output. */
1701 aix_thread_extra_thread_info (struct thread_info
*thread
)
1703 struct ui_file
*buf
;
1705 pthdb_pthread_t pdtid
;
1707 pthdb_state_t state
;
1708 pthdb_suspendstate_t suspendstate
;
1709 pthdb_detachstate_t detachstate
;
1712 static char *ret
= NULL
;
1714 if (!PD_TID (thread
->ptid
))
1717 buf
= mem_fileopen ();
1719 pdtid
= thread
->private->pdtid
;
1720 tid
= thread
->private->tid
;
1722 if (tid
!= PTHDB_INVALID_TID
)
1723 /* i18n: Like "thread-identifier %d, [state] running, suspended" */
1724 fprintf_unfiltered (buf
, _("tid %d"), (int)tid
);
1726 status
= pthdb_pthread_state (pd_session
, pdtid
, &state
);
1727 if (status
!= PTHDB_SUCCESS
)
1729 fprintf_unfiltered (buf
, ", %s", state2str (state
));
1731 status
= pthdb_pthread_suspendstate (pd_session
, pdtid
,
1733 if (status
== PTHDB_SUCCESS
&& suspendstate
== PSS_SUSPENDED
)
1734 /* i18n: Like "Thread-Id %d, [state] running, suspended" */
1735 fprintf_unfiltered (buf
, _(", suspended"));
1737 status
= pthdb_pthread_detachstate (pd_session
, pdtid
,
1739 if (status
== PTHDB_SUCCESS
&& detachstate
== PDS_DETACHED
)
1740 /* i18n: Like "Thread-Id %d, [state] running, detached" */
1741 fprintf_unfiltered (buf
, _(", detached"));
1743 pthdb_pthread_cancelpend (pd_session
, pdtid
, &cancelpend
);
1744 if (status
== PTHDB_SUCCESS
&& cancelpend
)
1745 /* i18n: Like "Thread-Id %d, [state] running, cancel pending" */
1746 fprintf_unfiltered (buf
, _(", cancel pending"));
1748 ui_file_write (buf
, "", 1);
1750 xfree (ret
); /* Free old buffer. */
1752 ret
= ui_file_xstrdup (buf
, &length
);
1753 ui_file_delete (buf
);
1758 /* Initialize target aix_thread_ops. */
1761 init_aix_thread_ops (void)
1763 aix_thread_ops
.to_shortname
= "aix-threads";
1764 aix_thread_ops
.to_longname
= _("AIX pthread support");
1765 aix_thread_ops
.to_doc
= _("AIX pthread support");
1767 aix_thread_ops
.to_attach
= aix_thread_attach
;
1768 aix_thread_ops
.to_detach
= aix_thread_detach
;
1769 aix_thread_ops
.to_resume
= aix_thread_resume
;
1770 aix_thread_ops
.to_wait
= aix_thread_wait
;
1771 aix_thread_ops
.to_fetch_registers
= aix_thread_fetch_registers
;
1772 aix_thread_ops
.to_store_registers
= aix_thread_store_registers
;
1773 aix_thread_ops
.to_xfer_partial
= aix_thread_xfer_partial
;
1774 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1775 debugging when the inferior reaches pd_brk_addr. */
1776 aix_thread_ops
.to_kill
= aix_thread_kill
;
1777 aix_thread_ops
.to_mourn_inferior
= aix_thread_mourn_inferior
;
1778 aix_thread_ops
.to_thread_alive
= aix_thread_thread_alive
;
1779 aix_thread_ops
.to_pid_to_str
= aix_thread_pid_to_str
;
1780 aix_thread_ops
.to_extra_thread_info
= aix_thread_extra_thread_info
;
1781 aix_thread_ops
.to_stratum
= thread_stratum
;
1782 aix_thread_ops
.to_magic
= OPS_MAGIC
;
1785 /* Module startup initialization function, automagically called by
1789 _initialize_aix_thread (void)
1791 init_aix_thread_ops ();
1792 add_target (&aix_thread_ops
);
1794 /* Notice when object files get loaded and unloaded. */
1795 target_new_objfile_chain
= deprecated_target_new_objfile_hook
;
1796 deprecated_target_new_objfile_hook
= new_objfile
;
1798 add_setshow_boolean_cmd ("aix-thread", class_maintenance
, &debug_aix_thread
,
1799 _("Set debugging of AIX thread module."),
1800 _("Show debugging of AIX thread module."),
1801 _("Enables debugging output (used to debug GDB)."),
1802 NULL
, NULL
, /* FIXME: i18n: Debugging of AIX thread module is \"%d\". */
1803 &setdebuglist
, &showdebuglist
);