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 <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.
109 This is more convenient than a pointer to 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, local_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, local_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, local_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, local_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, local_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)
553 case PST_IDLE: return "idle"; /* being created */
554 case PST_RUN: return "running"; /* running */
555 case PST_SLEEP: return "sleeping"; /* awaiting an event */
556 case PST_READY: return "ready"; /* runnable */
557 case PST_TERM: return "finished"; /* awaiting a join/detach */
558 default: return "unknown";
562 /* qsort() comparison function for sorting pd_thread structs by pthid. */
565 pcmp (const void *p1v, const void *p2v)
567 struct pd_thread *p1 = (struct pd_thread *) p1v;
568 struct pd_thread *p2 = (struct pd_thread *) p2v;
569 return p1->pthid < p2->pthid ? -1 : p1->pthid > p2->pthid;
572 /* iterate_over_threads() callback for counting GDB threads. */
575 giter_count (struct thread_info *thread, void *countp)
581 /* iterate_over_threads() callback for accumulating GDB thread pids. */
584 giter_accum (struct thread_info *thread, void *bufp)
586 **(struct thread_info ***) bufp = thread;
587 (*(struct thread_info ***) bufp)++;
591 /* ptid comparison function */
594 ptid_cmp (ptid_t ptid1, ptid_t ptid2)
598 if (ptid_get_pid (ptid1) < ptid_get_pid (ptid2))
600 else if (ptid_get_pid (ptid1) > ptid_get_pid (ptid2))
602 else if (ptid_get_tid (ptid1) < ptid_get_tid (ptid2))
604 else if (ptid_get_tid (ptid1) > ptid_get_tid (ptid2))
606 else if (ptid_get_lwp (ptid1) < ptid_get_lwp (ptid2))
608 else if (ptid_get_lwp (ptid1) > ptid_get_lwp (ptid2))
614 /* qsort() comparison function for sorting thread_info structs by pid. */
617 gcmp (const void *t1v, const void *t2v)
619 struct thread_info *t1 = *(struct thread_info **) t1v;
620 struct thread_info *t2 = *(struct thread_info **) t2v;
621 return ptid_cmp (t1->ptid, t2->ptid);
624 /* Synchronize GDB's thread list with libpthdebug's.
626 There are some benefits of doing this every time the inferior stops:
628 - allows users to run thread-specific commands without needing to
629 run "info threads" first
631 - helps pthdb_tid_pthread() work properly (see "libpthdebug
632 peculiarities" at the top of this module)
634 - simplifies the demands placed on libpthdebug, which seems to
635 have difficulty with certain call patterns */
638 sync_threadlists (void)
640 int cmd, status, infpid;
641 int pcount, psize, pi, gcount, gi;
642 struct pd_thread *pbuf;
643 struct thread_info **gbuf, **g, *thread;
644 pthdb_pthread_t pdtid;
648 /* Accumulate an array of libpthdebug threads sorted by pthread id. */
652 pbuf = (struct pd_thread *) xmalloc (psize * sizeof *pbuf);
654 for (cmd = PTHDB_LIST_FIRST;; cmd = PTHDB_LIST_NEXT)
656 status = pthdb_pthread (pd_session, &pdtid, cmd);
657 if (status != PTHDB_SUCCESS || pdtid == PTHDB_INVALID_PTHREAD)
660 status = pthdb_pthread_ptid (pd_session, pdtid, &pthid);
661 if (status != PTHDB_SUCCESS || pthid == PTHDB_INVALID_PTID)
667 pbuf = (struct pd_thread *) xrealloc (pbuf,
668 psize * sizeof *pbuf);
670 pbuf[pcount].pdtid = pdtid;
671 pbuf[pcount].pthid = pthid;
675 for (pi = 0; pi < pcount; pi++)
677 status = pthdb_pthread_tid (pd_session, pbuf[pi].pdtid, &tid);
678 if (status != PTHDB_SUCCESS)
679 tid = PTHDB_INVALID_TID;
683 qsort (pbuf, pcount, sizeof *pbuf, pcmp);
685 /* Accumulate an array of GDB threads sorted by pid. */
688 iterate_over_threads (giter_count, &gcount);
689 g = gbuf = (struct thread_info **) xmalloc (gcount * sizeof *gbuf);
690 iterate_over_threads (giter_accum, &g);
691 qsort (gbuf, gcount, sizeof *gbuf, gcmp);
693 /* Apply differences between the two arrays to GDB's thread list. */
695 infpid = PIDGET (inferior_ptid);
696 for (pi = gi = 0; pi < pcount || gi < gcount;)
700 delete_thread (gbuf[gi]->ptid);
703 else if (gi == gcount)
705 thread = add_thread (BUILD_THREAD (pbuf[pi].pthid, infpid));
706 thread->private = xmalloc (sizeof (struct private_thread_info));
707 thread->private->pdtid = pbuf[pi].pdtid;
708 thread->private->tid = pbuf[pi].tid;
716 pptid = BUILD_THREAD (pbuf[pi].pthid, infpid);
717 gptid = gbuf[gi]->ptid;
718 pdtid = pbuf[pi].pdtid;
721 cmp_result = ptid_cmp (pptid, gptid);
725 gbuf[gi]->private->pdtid = pdtid;
726 gbuf[gi]->private->tid = tid;
730 else if (cmp_result > 0)
732 delete_thread (gptid);
737 thread = add_thread (pptid);
738 thread->private = xmalloc (sizeof (struct private_thread_info));
739 thread->private->pdtid = pdtid;
740 thread->private->tid = tid;
750 /* Iterate_over_threads() callback for locating a thread whose kernel
751 thread just received a trap signal. */
754 iter_trap (struct thread_info *thread, void *unused)
756 struct thrdsinfo64 thrinf;
759 /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
760 extern int getthrds (pid_t, struct thrdsinfo64 *,
761 int, pthdb_tid_t *, int);
763 tid = thread->private->tid;
764 if (tid == PTHDB_INVALID_TID)
767 if (getthrds (PIDGET (inferior_ptid), &thrinf,
768 sizeof (thrinf), &tid, 1) != 1)
771 return thrinf.ti_cursig == SIGTRAP;
774 /* Synchronize libpthdebug's state with the inferior and with GDB,
775 generate a composite process/thread <pid> for the current thread,
776 set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
779 pd_update (int set_infpid)
783 struct thread_info *thread;
786 return inferior_ptid;
788 status = pthdb_session_update (pd_session);
789 if (status != PTHDB_SUCCESS)
790 return inferior_ptid;
794 /* Define "current thread" as one that just received a trap signal. */
796 thread = iterate_over_threads (iter_trap, NULL);
798 ptid = inferior_ptid;
803 inferior_ptid = ptid;
808 /* Try to start debugging threads in the current process.
809 If successful and SET_INFPID, set inferior_ptid to reflect the
813 pd_activate (int set_infpid)
817 status = pthdb_session_init (PD_USER, arch64 ? PEM_64BIT : PEM_32BIT,
818 PTHDB_FLAG_REGS, &pd_callbacks,
820 if (status != PTHDB_SUCCESS)
822 return inferior_ptid;
825 return pd_update (set_infpid);
828 /* Undo the effects of pd_activate(). */
835 pthdb_session_destroy (pd_session);
837 pid_to_prc (&inferior_ptid);
841 /* An object file has just been loaded. Check whether the current
842 application is pthreaded, and if so, prepare for thread debugging. */
849 struct minimal_symbol *ms;
851 /* Don't initialize twice. */
855 /* Check application word size. */
856 arch64 = DEPRECATED_REGISTER_RAW_SIZE (0) == 8;
858 /* Check whether the application is pthreaded. */
860 status = pthdb_session_pthreaded (PD_USER, PTHDB_FLAG_REGS,
861 &pd_callbacks, &stub_name);
862 if ((status != PTHDB_SUCCESS &&
863 status != PTHDB_NOT_PTHREADED) || !stub_name)
866 /* Set a breakpoint on the returned stub function. */
867 if (!(ms = lookup_minimal_symbol (stub_name, NULL, NULL)))
869 pd_brk_addr = SYMBOL_VALUE_ADDRESS (ms);
870 if (!create_thread_event_breakpoint (pd_brk_addr))
873 /* Prepare for thread debugging. */
874 base_target = current_target;
875 push_target (&aix_thread_ops);
878 /* If we're debugging a core file or an attached inferior, the
879 pthread library may already have been initialized, so try to
880 activate thread debugging. */
884 /* Undo the effects of pd_enable(). */
894 unpush_target (&aix_thread_ops);
897 /* deprecated_target_new_objfile_hook callback.
899 If OBJFILE is non-null, check whether a threaded application is
900 being debugged, and if so, prepare for thread debugging.
902 If OBJFILE is null, stop debugging threads. */
905 new_objfile (struct objfile *objfile)
912 if (target_new_objfile_chain)
913 target_new_objfile_chain (objfile);
916 /* Attach to process specified by ARGS. */
919 aix_thread_attach (char *args, int from_tty)
921 base_target.to_attach (args, from_tty);
925 /* Detach from the process attached to by aix_thread_attach(). */
928 aix_thread_detach (char *args, int from_tty)
931 base_target.to_detach (args, from_tty);
934 /* Tell the inferior process to continue running thread PID if != -1
935 and all threads otherwise. */
938 aix_thread_resume (ptid_t ptid, int step, enum target_signal sig)
940 struct thread_info *thread;
945 struct cleanup *cleanup = save_inferior_ptid ();
946 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
947 base_target.to_resume (ptid, step, sig);
948 do_cleanups (cleanup);
952 thread = find_thread_pid (ptid);
954 error ("aix-thread resume: unknown pthread %ld",
957 tid[0] = thread->private->tid;
958 if (tid[0] == PTHDB_INVALID_TID)
959 error ("aix-thread resume: no tid for pthread %ld",
964 ptrace64aix (PTT_CONTINUE, tid[0], 1,
965 target_signal_to_host (sig), (int *) tid);
967 ptrace32 (PTT_CONTINUE, tid[0], (int *) 1,
968 target_signal_to_host (sig), (int *) tid);
972 /* Wait for thread/process ID if != -1 or for any thread otherwise.
973 If an error occurs, return -1, else return the pid of the stopped
977 aix_thread_wait (ptid_t ptid, struct target_waitstatus *status)
979 struct cleanup *cleanup = save_inferior_ptid ();
983 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
984 ptid = base_target.to_wait (ptid, status);
985 do_cleanups (cleanup);
987 if (PIDGET (ptid) == -1)
988 return pid_to_ptid (-1);
990 /* Check whether libpthdebug might be ready to be initialized. */
991 if (!pd_active && status->kind == TARGET_WAITKIND_STOPPED &&
992 status->value.sig == TARGET_SIGNAL_TRAP &&
993 read_pc_pid (ptid) - DECR_PC_AFTER_BREAK == pd_brk_addr)
994 return pd_activate (0);
996 return pd_update (0);
999 /* Record that the 64-bit general-purpose registers contain VALS. */
1002 supply_gprs64 (uint64_t *vals)
1004 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1007 for (regno = 0; regno < ppc_num_gprs; regno++)
1008 supply_register (tdep->ppc_gp0_regnum + regno, (char *) (vals + regno));
1011 /* Record that 32-bit register REGNO contains VAL. */
1014 supply_reg32 (int regno, uint32_t val)
1016 supply_register (regno, (char *) &val);
1019 /* Record that the floating-point registers contain VALS. */
1022 supply_fprs (double *vals)
1024 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1027 /* This function should never be called on architectures without
1028 floating-point registers. */
1029 gdb_assert (ppc_floating_point_p (current_gdbarch));
1031 for (regno = 0; regno < ppc_num_fprs; regno++)
1032 supply_register (regno + tdep->ppc_fp0_regnum, (char *) (vals + regno));
1035 /* Predicate to test whether given register number is a "special" register. */
1037 special_register_p (int regno)
1039 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1041 return regno == PC_REGNUM
1042 || regno == tdep->ppc_ps_regnum
1043 || regno == tdep->ppc_cr_regnum
1044 || regno == tdep->ppc_lr_regnum
1045 || regno == tdep->ppc_ctr_regnum
1046 || regno == tdep->ppc_xer_regnum
1047 || (tdep->ppc_fpscr_regnum >= 0 && regno == tdep->ppc_fpscr_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,
1060 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1062 supply_register (PC_REGNUM, (char *) &iar);
1063 supply_register (tdep->ppc_ps_regnum, (char *) &msr);
1064 supply_register (tdep->ppc_cr_regnum, (char *) &cr);
1065 supply_register (tdep->ppc_lr_regnum, (char *) &lr);
1066 supply_register (tdep->ppc_ctr_regnum, (char *) &ctr);
1067 supply_register (tdep->ppc_xer_regnum, (char *) &xer);
1068 if (tdep->ppc_fpscr_regnum >= 0)
1069 supply_register (tdep->ppc_fpscr_regnum, (char *) &fpscr);
1072 /* Record that the special registers contain the specified 32-bit
1076 supply_sprs32 (uint32_t iar, uint32_t msr, uint32_t cr,
1077 uint32_t lr, uint32_t ctr, uint32_t xer,
1080 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1082 supply_register (PC_REGNUM, (char *) &iar);
1083 supply_register (tdep->ppc_ps_regnum, (char *) &msr);
1084 supply_register (tdep->ppc_cr_regnum, (char *) &cr);
1085 supply_register (tdep->ppc_lr_regnum, (char *) &lr);
1086 supply_register (tdep->ppc_ctr_regnum, (char *) &ctr);
1087 supply_register (tdep->ppc_xer_regnum, (char *) &xer);
1088 if (tdep->ppc_fpscr_regnum >= 0)
1089 supply_register (tdep->ppc_fpscr_regnum, (char *) &fpscr);
1092 /* Fetch all registers from pthread PDTID, which doesn't have a kernel
1095 There's no way to query a single register from a non-kernel
1096 pthread, so there's no need for a single-register version of this
1100 fetch_regs_user_thread (pthdb_pthread_t pdtid)
1102 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1104 pthdb_context_t ctx;
1106 if (debug_aix_thread)
1107 fprintf_unfiltered (gdb_stdlog,
1108 "fetch_regs_user_thread %lx\n", (long) pdtid);
1109 status = pthdb_pthread_context (pd_session, pdtid, &ctx);
1110 if (status != PTHDB_SUCCESS)
1111 error ("aix-thread: fetch_registers: pthdb_pthread_context returned %s",
1112 pd_status2str (status));
1114 /* General-purpose registers. */
1117 supply_gprs64 (ctx.gpr);
1119 for (i = 0; i < ppc_num_gprs; i++)
1120 supply_reg32 (tdep->ppc_gp0_regnum + i, ctx.gpr[i]);
1122 /* Floating-point registers. */
1124 if (ppc_floating_point_p (current_gdbarch))
1125 supply_fprs (ctx.fpr);
1127 /* Special registers. */
1130 supply_sprs64 (ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, ctx.xer,
1133 supply_sprs32 (ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, ctx.xer,
1137 /* Fetch register REGNO if != -1 or all registers otherwise from
1140 AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
1141 SPRs, but there's no way to query individual registers within those
1142 groups. Therefore, if REGNO != -1, this function fetches an entire
1145 Unfortunately, kernel thread register queries often fail with
1146 EPERM, indicating that the thread is in kernel space. This breaks
1147 backtraces of threads other than the current one. To make that
1148 breakage obvious without throwing an error to top level (which is
1149 bad e.g. during "info threads" output), zero registers that can't
1153 fetch_regs_kernel_thread (int regno, pthdb_tid_t tid)
1155 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1156 uint64_t gprs64[ppc_num_gprs];
1157 uint32_t gprs32[ppc_num_gprs];
1158 double fprs[ppc_num_fprs];
1159 struct ptxsprs sprs64;
1160 struct ptsprs sprs32;
1163 if (debug_aix_thread)
1164 fprintf_unfiltered (gdb_stdlog,
1165 "fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
1166 (long) tid, regno, arch64);
1168 /* General-purpose registers. */
1170 || (tdep->ppc_gp0_regnum <= regno
1171 && regno < tdep->ppc_gp0_regnum + ppc_num_gprs))
1175 if (!ptrace64aix (PTT_READ_GPRS, tid,
1176 (unsigned long) gprs64, 0, NULL))
1177 memset (gprs64, 0, sizeof (gprs64));
1178 supply_gprs64 (gprs64);
1182 if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL))
1183 memset (gprs32, 0, sizeof (gprs32));
1184 for (i = 0; i < ppc_num_gprs; i++)
1185 supply_reg32 (tdep->ppc_gp0_regnum + i, gprs32[i]);
1189 /* Floating-point registers. */
1191 if (ppc_floating_point_unit_p (current_gdbarch)
1193 || (regno >= tdep->ppc_fp0_regnum
1194 && regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
1196 if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL))
1197 memset (fprs, 0, sizeof (fprs));
1201 /* Special-purpose registers. */
1203 if (regno == -1 || special_register_p (regno))
1207 if (!ptrace64aix (PTT_READ_SPRS, tid,
1208 (unsigned long) &sprs64, 0, NULL))
1209 memset (&sprs64, 0, sizeof (sprs64));
1210 supply_sprs64 (sprs64.pt_iar, sprs64.pt_msr, sprs64.pt_cr,
1211 sprs64.pt_lr, sprs64.pt_ctr, sprs64.pt_xer,
1216 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1218 if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL))
1219 memset (&sprs32, 0, sizeof (sprs32));
1220 supply_sprs32 (sprs32.pt_iar, sprs32.pt_msr, sprs32.pt_cr,
1221 sprs32.pt_lr, sprs32.pt_ctr, sprs32.pt_xer,
1224 if (tdep->ppc_mq_regnum >= 0)
1225 supply_register (tdep->ppc_mq_regnum, (char *) &sprs32.pt_mq);
1230 /* Fetch register REGNO if != -1 or all registers otherwise in the
1231 thread/process specified by inferior_ptid. */
1234 aix_thread_fetch_registers (int regno)
1236 struct thread_info *thread;
1239 if (!PD_TID (inferior_ptid))
1240 base_target.to_fetch_registers (regno);
1243 thread = find_thread_pid (inferior_ptid);
1244 tid = thread->private->tid;
1246 if (tid == PTHDB_INVALID_TID)
1247 fetch_regs_user_thread (thread->private->pdtid);
1249 fetch_regs_kernel_thread (regno, tid);
1253 /* Store the gp registers into an array of uint32_t or uint64_t. */
1256 fill_gprs64 (uint64_t *vals)
1258 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1261 for (regno = 0; regno < ppc_num_gprs; regno++)
1262 if (register_cached (tdep->ppc_gp0_regnum + regno))
1263 regcache_collect (tdep->ppc_gp0_regnum + regno, vals + regno);
1267 fill_gprs32 (uint32_t *vals)
1269 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1272 for (regno = 0; regno < ppc_num_gprs; regno++)
1273 if (register_cached (tdep->ppc_gp0_regnum + regno))
1274 regcache_collect (tdep->ppc_gp0_regnum + regno, vals + regno);
1277 /* Store the floating point registers into a double array. */
1279 fill_fprs (double *vals)
1281 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1284 /* This function should never be called on architectures without
1285 floating-point registers. */
1286 gdb_assert (ppc_floating_point_p (current_gdbarch));
1288 for (regno = tdep->ppc_fp0_regnum;
1289 regno < tdep->ppc_fp0_regnum + ppc_num_fprs;
1291 if (register_cached (regno))
1292 regcache_collect (regno, vals + regno);
1295 /* Store the special registers into the specified 64-bit and 32-bit
1299 fill_sprs64 (uint64_t *iar, uint64_t *msr, uint32_t *cr,
1300 uint64_t *lr, uint64_t *ctr, uint32_t *xer,
1303 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1305 /* Verify that the size of the size of the IAR buffer is the
1306 same as the raw size of the PC (in the register cache). If
1307 they're not, then either GDB has been built incorrectly, or
1308 there's some other kind of internal error. To be really safe,
1309 we should check all of the sizes. */
1310 gdb_assert (sizeof (*iar) == DEPRECATED_REGISTER_RAW_SIZE (PC_REGNUM));
1312 if (register_cached (PC_REGNUM))
1313 regcache_collect (PC_REGNUM, iar);
1314 if (register_cached (tdep->ppc_ps_regnum))
1315 regcache_collect (tdep->ppc_ps_regnum, msr);
1316 if (register_cached (tdep->ppc_cr_regnum))
1317 regcache_collect (tdep->ppc_cr_regnum, cr);
1318 if (register_cached (tdep->ppc_lr_regnum))
1319 regcache_collect (tdep->ppc_lr_regnum, lr);
1320 if (register_cached (tdep->ppc_ctr_regnum))
1321 regcache_collect (tdep->ppc_ctr_regnum, ctr);
1322 if (register_cached (tdep->ppc_xer_regnum))
1323 regcache_collect (tdep->ppc_xer_regnum, xer);
1324 if (tdep->ppc_fpscr_regnum >= 0
1325 && register_cached (tdep->ppc_fpscr_regnum))
1326 regcache_collect (tdep->ppc_fpscr_regnum, fpscr);
1330 fill_sprs32 (unsigned long *iar, unsigned long *msr, unsigned long *cr,
1331 unsigned long *lr, unsigned long *ctr, unsigned long *xer,
1332 unsigned long *fpscr)
1334 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1336 /* Verify that the size of the size of the IAR buffer is the
1337 same as the raw size of the PC (in the register cache). If
1338 they're not, then either GDB has been built incorrectly, or
1339 there's some other kind of internal error. To be really safe,
1340 we should check all of the sizes.
1342 If this assert() fails, the most likely reason is that GDB was
1343 built incorrectly. In order to make use of many of the header
1344 files in /usr/include/sys, GDB needs to be configured so that
1345 sizeof (long) == 4). */
1346 gdb_assert (sizeof (*iar) == DEPRECATED_REGISTER_RAW_SIZE (PC_REGNUM));
1348 if (register_cached (PC_REGNUM))
1349 regcache_collect (PC_REGNUM, iar);
1350 if (register_cached (tdep->ppc_ps_regnum))
1351 regcache_collect (tdep->ppc_ps_regnum, msr);
1352 if (register_cached (tdep->ppc_cr_regnum))
1353 regcache_collect (tdep->ppc_cr_regnum, cr);
1354 if (register_cached (tdep->ppc_lr_regnum))
1355 regcache_collect (tdep->ppc_lr_regnum, lr);
1356 if (register_cached (tdep->ppc_ctr_regnum))
1357 regcache_collect (tdep->ppc_ctr_regnum, ctr);
1358 if (register_cached (tdep->ppc_xer_regnum))
1359 regcache_collect (tdep->ppc_xer_regnum, xer);
1360 if (tdep->ppc_fpscr_regnum >= 0
1361 && register_cached (tdep->ppc_fpscr_regnum))
1362 regcache_collect (tdep->ppc_fpscr_regnum, fpscr);
1365 /* Store all registers into pthread PDTID, which doesn't have a kernel
1368 It's possible to store a single register into a non-kernel pthread,
1369 but I doubt it's worth the effort. */
1372 store_regs_user_thread (pthdb_pthread_t pdtid)
1374 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1376 pthdb_context_t ctx;
1381 if (debug_aix_thread)
1382 fprintf_unfiltered (gdb_stdlog,
1383 "store_regs_user_thread %lx\n", (long) pdtid);
1385 /* Retrieve the thread's current context for its non-register
1387 status = pthdb_pthread_context (pd_session, pdtid, &ctx);
1388 if (status != PTHDB_SUCCESS)
1389 error ("aix-thread: store_registers: pthdb_pthread_context returned %s",
1390 pd_status2str (status));
1392 /* Collect general-purpose register values from the regcache. */
1394 for (i = 0; i < ppc_num_gprs; i++)
1395 if (register_cached (tdep->ppc_gp0_regnum + i))
1399 regcache_collect (tdep->ppc_gp0_regnum + i, (void *) &int64);
1404 regcache_collect (tdep->ppc_gp0_regnum + i, (void *) &int32);
1409 /* Collect floating-point register values from the regcache. */
1410 if (ppc_floating_point_p (current_gdbarch))
1411 fill_fprs (ctx.fpr);
1413 /* Special registers (always kept in ctx as 64 bits). */
1416 fill_sprs64 (&ctx.iar, &ctx.msr, &ctx.cr, &ctx.lr, &ctx.ctr, &ctx.xer,
1421 /* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
1422 Solution: use 32-bit temp variables. (The assert() in fill_sprs32()
1423 will fail if the size of an unsigned long is incorrect. If this
1424 happens, GDB needs to be reconfigured so that longs are 32-bits.) */
1425 unsigned long tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer,
1428 fill_sprs32 (&tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr, &tmp_ctr, &tmp_xer,
1430 if (register_cached (PC_REGNUM))
1432 if (register_cached (tdep->ppc_ps_regnum))
1434 if (register_cached (tdep->ppc_cr_regnum))
1436 if (register_cached (tdep->ppc_lr_regnum))
1438 if (register_cached (tdep->ppc_ctr_regnum))
1440 if (register_cached (tdep->ppc_xer_regnum))
1442 if (register_cached (tdep->ppc_xer_regnum))
1443 ctx.fpscr = tmp_fpscr;
1446 status = pthdb_pthread_setcontext (pd_session, pdtid, &ctx);
1447 if (status != PTHDB_SUCCESS)
1448 error ("aix-thread: store_registers: pthdb_pthread_setcontext returned %s",
1449 pd_status2str (status));
1452 /* Store register REGNO if != -1 or all registers otherwise into
1455 AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
1456 SPRs, but there's no way to set individual registers within those
1457 groups. Therefore, if REGNO != -1, this function stores an entire
1461 store_regs_kernel_thread (int regno, pthdb_tid_t tid)
1463 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1464 uint64_t gprs64[ppc_num_gprs];
1465 uint32_t gprs32[ppc_num_gprs];
1466 double fprs[ppc_num_fprs];
1467 struct ptxsprs sprs64;
1468 struct ptsprs sprs32;
1470 struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
1472 if (debug_aix_thread)
1473 fprintf_unfiltered (gdb_stdlog,
1474 "store_regs_kernel_thread tid=%lx regno=%d\n",
1477 /* General-purpose registers. */
1479 || (tdep->ppc_gp0_regnum <= regno
1480 && regno < tdep->ppc_gp0_regnum + ppc_num_fprs))
1484 /* Pre-fetch: some regs may not be in the cache. */
1485 ptrace64aix (PTT_READ_GPRS, tid, (unsigned long) gprs64, 0, NULL);
1486 fill_gprs64 (gprs64);
1487 ptrace64aix (PTT_WRITE_GPRS, tid, (unsigned long) gprs64, 0, NULL);
1491 /* Pre-fetch: some regs may not be in the cache. */
1492 ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL);
1493 fill_gprs32 (gprs32);
1494 ptrace32 (PTT_WRITE_GPRS, tid, gprs32, 0, NULL);
1498 /* Floating-point registers. */
1500 if (ppc_floating_point_unit_p (current_gdbarch)
1502 || (regno >= tdep->ppc_fp0_regnum
1503 && regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
1505 /* Pre-fetch: some regs may not be in the cache. */
1506 ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL);
1508 ptrace32 (PTT_WRITE_FPRS, tid, (int *) fprs, 0, NULL);
1511 /* Special-purpose registers. */
1513 if (regno == -1 || special_register_p (regno))
1517 /* Pre-fetch: some registers won't be in the cache. */
1518 ptrace64aix (PTT_READ_SPRS, tid,
1519 (unsigned long) &sprs64, 0, NULL);
1520 fill_sprs64 (&sprs64.pt_iar, &sprs64.pt_msr, &sprs64.pt_cr,
1521 &sprs64.pt_lr, &sprs64.pt_ctr, &sprs64.pt_xer,
1523 ptrace64aix (PTT_WRITE_SPRS, tid,
1524 (unsigned long) &sprs64, 0, NULL);
1528 /* Pre-fetch: some registers won't be in the cache. */
1529 ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL);
1531 fill_sprs32 (&sprs32.pt_iar, &sprs32.pt_msr, &sprs32.pt_cr,
1532 &sprs32.pt_lr, &sprs32.pt_ctr, &sprs32.pt_xer,
1535 if (tdep->ppc_mq_regnum >= 0)
1536 if (register_cached (tdep->ppc_mq_regnum))
1537 regcache_collect (tdep->ppc_mq_regnum, &sprs32.pt_mq);
1539 ptrace32 (PTT_WRITE_SPRS, tid, (int *) &sprs32, 0, NULL);
1544 /* Store gdb's current view of the register set into the
1545 thread/process specified by inferior_ptid. */
1548 aix_thread_store_registers (int regno)
1550 struct thread_info *thread;
1553 if (!PD_TID (inferior_ptid))
1554 base_target.to_store_registers (regno);
1557 thread = find_thread_pid (inferior_ptid);
1558 tid = thread->private->tid;
1560 if (tid == PTHDB_INVALID_TID)
1561 store_regs_user_thread (thread->private->pdtid);
1563 store_regs_kernel_thread (regno, tid);
1567 /* Transfer LEN bytes of memory from GDB address MYADDR to target
1568 address MEMADDR if WRITE and vice versa otherwise. */
1571 aix_thread_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
1572 struct mem_attrib *attrib,
1573 struct target_ops *target)
1576 struct cleanup *cleanup = save_inferior_ptid ();
1578 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
1579 n = base_target.to_xfer_memory (memaddr, myaddr, len,
1580 write, attrib, &base_target);
1581 do_cleanups (cleanup);
1586 /* Kill and forget about the inferior process. */
1589 aix_thread_kill (void)
1591 struct cleanup *cleanup = save_inferior_ptid ();
1593 inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
1594 base_target.to_kill ();
1595 do_cleanups (cleanup);
1598 /* Clean up after the inferior exits. */
1601 aix_thread_mourn_inferior (void)
1604 base_target.to_mourn_inferior ();
1607 /* Return whether thread PID is still valid. */
1610 aix_thread_thread_alive (ptid_t ptid)
1613 return base_target.to_thread_alive (ptid);
1615 /* We update the thread list every time the child stops, so all
1616 valid threads should be in the thread list. */
1617 return in_thread_list (ptid);
1620 /* Return a printable representation of composite PID for use in
1621 "info threads" output. */
1624 aix_thread_pid_to_str (ptid_t ptid)
1626 static char *ret = NULL;
1629 return base_target.to_pid_to_str (ptid);
1631 /* Free previous return value; a new one will be allocated by
1635 xasprintf (&ret, "Thread %ld", ptid_get_tid (ptid));
1639 /* Return a printable representation of extra information about
1640 THREAD, for use in "info threads" output. */
1643 aix_thread_extra_thread_info (struct thread_info *thread)
1645 struct ui_file *buf;
1647 pthdb_pthread_t pdtid;
1649 pthdb_state_t state;
1650 pthdb_suspendstate_t suspendstate;
1651 pthdb_detachstate_t detachstate;
1654 static char *ret = NULL;
1656 if (!PD_TID (thread->ptid))
1659 buf = mem_fileopen ();
1661 pdtid = thread->private->pdtid;
1662 tid = thread->private->tid;
1664 if (tid != PTHDB_INVALID_TID)
1665 fprintf_unfiltered (buf, "tid %d", tid);
1667 status = pthdb_pthread_state (pd_session, pdtid, &state);
1668 if (status != PTHDB_SUCCESS)
1670 fprintf_unfiltered (buf, ", %s", state2str (state));
1672 status = pthdb_pthread_suspendstate (pd_session, pdtid,
1674 if (status == PTHDB_SUCCESS && suspendstate == PSS_SUSPENDED)
1675 fprintf_unfiltered (buf, ", suspended");
1677 status = pthdb_pthread_detachstate (pd_session, pdtid,
1679 if (status == PTHDB_SUCCESS && detachstate == PDS_DETACHED)
1680 fprintf_unfiltered (buf, ", detached");
1682 pthdb_pthread_cancelpend (pd_session, pdtid, &cancelpend);
1683 if (status == PTHDB_SUCCESS && cancelpend)
1684 fprintf_unfiltered (buf, ", cancel pending");
1686 ui_file_write (buf, "", 1);
1688 xfree (ret); /* Free old buffer. */
1690 ret = ui_file_xstrdup (buf, &length);
1691 ui_file_delete (buf);
1696 /* Initialize target aix_thread_ops. */
1699 init_aix_thread_ops (void)
1701 aix_thread_ops.to_shortname = "aix-threads";
1702 aix_thread_ops.to_longname = "AIX pthread support";
1703 aix_thread_ops.to_doc = "AIX pthread support";
1705 aix_thread_ops.to_attach = aix_thread_attach;
1706 aix_thread_ops.to_detach = aix_thread_detach;
1707 aix_thread_ops.to_resume = aix_thread_resume;
1708 aix_thread_ops.to_wait = aix_thread_wait;
1709 aix_thread_ops.to_fetch_registers = aix_thread_fetch_registers;
1710 aix_thread_ops.to_store_registers = aix_thread_store_registers;
1711 aix_thread_ops.to_xfer_memory = aix_thread_xfer_memory;
1712 /* No need for aix_thread_ops.to_create_inferior, because we activate thread
1713 debugging when the inferior reaches pd_brk_addr. */
1714 aix_thread_ops.to_kill = aix_thread_kill;
1715 aix_thread_ops.to_mourn_inferior = aix_thread_mourn_inferior;
1716 aix_thread_ops.to_thread_alive = aix_thread_thread_alive;
1717 aix_thread_ops.to_pid_to_str = aix_thread_pid_to_str;
1718 aix_thread_ops.to_extra_thread_info = aix_thread_extra_thread_info;
1719 aix_thread_ops.to_stratum = thread_stratum;
1720 aix_thread_ops.to_magic = OPS_MAGIC;
1723 /* Module startup initialization function, automagically called by
1727 _initialize_aix_thread (void)
1729 init_aix_thread_ops ();
1730 add_target (&aix_thread_ops);
1732 /* Notice when object files get loaded and unloaded. */
1733 target_new_objfile_chain = deprecated_target_new_objfile_hook;
1734 deprecated_target_new_objfile_hook = new_objfile;
1736 add_show_from_set (add_set_cmd ("aix-thread", no_class, var_zinteger,
1737 (char *) &debug_aix_thread,
1738 "Set debugging of AIX thread module.\n"
1739 "Enables printf debugging output.\n",