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https://sourceware.org/git/binutils-gdb.git
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527a273ac1
record-btrace was the only target making use of this, and it no longer uses it. gdb/ChangeLog: 2015-03-04 Pedro Alves <palves@redhat.com> * target.h (struct target_ops) <to_decr_pc_after_break>: Delete. (target_decr_pc_after_break): Delete declaration. * target.c (default_target_decr_pc_after_break) (target_decr_pc_after_break): Delete. * linux-nat.c (check_stopped_by_breakpoint, linux_nat_wait_1): Use gdbarch_decr_pc_after_break instead of target_decr_pc_after_break. * linux-thread-db.c (check_event): Likewise. * infrun.c (adjust_pc_after_break): Likewise. * darwin-nat.c (cancel_breakpoint): Likewise. * aix-thread.c (aix_thread_wait): Likewise. * target-delegates.c: Regenerate.
1863 lines
54 KiB
C
1863 lines
54 KiB
C
/* Low level interface for debugging AIX 4.3+ pthreads.
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Copyright (C) 1999-2015 Free Software Foundation, Inc.
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Written by Nick Duffek <nsd@redhat.com>.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This module uses the libpthdebug.a library provided by AIX 4.3+ for
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debugging pthread applications.
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Some name prefix conventions:
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pthdb_ provided by libpthdebug.a
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pdc_ callbacks that this module provides to libpthdebug.a
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pd_ variables or functions interfacing with libpthdebug.a
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libpthdebug peculiarities:
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- pthdb_ptid_pthread() is prototyped in <sys/pthdebug.h>, but
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it's not documented, and after several calls it stops working
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and causes other libpthdebug functions to fail.
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- pthdb_tid_pthread() doesn't always work after
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pthdb_session_update(), but it does work after cycling through
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all threads using pthdb_pthread().
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*/
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#include "defs.h"
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#include "gdbthread.h"
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#include "target.h"
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#include "inferior.h"
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#include "regcache.h"
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#include "gdbcmd.h"
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#include "ppc-tdep.h"
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#include "observer.h"
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#include "objfiles.h"
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#include <procinfo.h>
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <sys/reg.h>
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#include <sched.h>
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#include <sys/pthdebug.h>
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#if !HAVE_DECL_GETTHRDS
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extern int getthrds (pid_t, struct thrdsinfo64 *, int, tid_t *, int);
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#endif
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/* Whether to emit debugging output. */
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static int debug_aix_thread;
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/* In AIX 5.1, functions use pthdb_tid_t instead of tid_t. */
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#ifndef PTHDB_VERSION_3
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#define pthdb_tid_t tid_t
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#endif
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/* Return whether to treat PID as a debuggable thread id. */
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#define PD_TID(ptid) (pd_active && ptid_get_tid (ptid) != 0)
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/* pthdb_user_t value that we pass to pthdb functions. 0 causes
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PTHDB_BAD_USER errors, so use 1. */
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#define PD_USER 1
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/* Success and failure values returned by pthdb callbacks. */
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#define PDC_SUCCESS PTHDB_SUCCESS
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#define PDC_FAILURE PTHDB_CALLBACK
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/* Private data attached to each element in GDB's thread list. */
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struct private_thread_info {
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pthdb_pthread_t pdtid; /* thread's libpthdebug id */
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pthdb_tid_t tid; /* kernel thread id */
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};
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/* Information about a thread of which libpthdebug is aware. */
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struct pd_thread {
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pthdb_pthread_t pdtid;
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pthread_t pthid;
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pthdb_tid_t tid;
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};
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/* This module's target-specific operations, active while pd_able is true. */
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static struct target_ops aix_thread_ops;
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/* Address of the function that libpthread will call when libpthdebug
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is ready to be initialized. */
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static CORE_ADDR pd_brk_addr;
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/* Whether the current application is debuggable by pthdb. */
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static int pd_able = 0;
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/* Whether a threaded application is being debugged. */
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static int pd_active = 0;
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/* Whether the current architecture is 64-bit.
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Only valid when pd_able is true. */
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static int arch64;
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/* Forward declarations for pthdb callbacks. */
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static int pdc_symbol_addrs (pthdb_user_t, pthdb_symbol_t *, int);
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static int pdc_read_data (pthdb_user_t, void *, pthdb_addr_t, size_t);
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static int pdc_write_data (pthdb_user_t, void *, pthdb_addr_t, size_t);
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static int pdc_read_regs (pthdb_user_t user, pthdb_tid_t tid,
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unsigned long long flags,
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pthdb_context_t *context);
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static int pdc_write_regs (pthdb_user_t user, pthdb_tid_t tid,
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unsigned long long flags,
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pthdb_context_t *context);
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static int pdc_alloc (pthdb_user_t, size_t, void **);
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static int pdc_realloc (pthdb_user_t, void *, size_t, void **);
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static int pdc_dealloc (pthdb_user_t, void *);
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/* pthdb callbacks. */
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static pthdb_callbacks_t pd_callbacks = {
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pdc_symbol_addrs,
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pdc_read_data,
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pdc_write_data,
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pdc_read_regs,
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pdc_write_regs,
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pdc_alloc,
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pdc_realloc,
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pdc_dealloc,
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NULL
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};
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/* Current pthdb session. */
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static pthdb_session_t pd_session;
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/* Return a printable representation of pthdebug function return
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STATUS. */
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static char *
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pd_status2str (int status)
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{
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switch (status)
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{
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case PTHDB_SUCCESS: return "SUCCESS";
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case PTHDB_NOSYS: return "NOSYS";
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case PTHDB_NOTSUP: return "NOTSUP";
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case PTHDB_BAD_VERSION: return "BAD_VERSION";
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case PTHDB_BAD_USER: return "BAD_USER";
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case PTHDB_BAD_SESSION: return "BAD_SESSION";
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case PTHDB_BAD_MODE: return "BAD_MODE";
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case PTHDB_BAD_FLAGS: return "BAD_FLAGS";
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case PTHDB_BAD_CALLBACK: return "BAD_CALLBACK";
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case PTHDB_BAD_POINTER: return "BAD_POINTER";
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case PTHDB_BAD_CMD: return "BAD_CMD";
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case PTHDB_BAD_PTHREAD: return "BAD_PTHREAD";
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case PTHDB_BAD_ATTR: return "BAD_ATTR";
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case PTHDB_BAD_MUTEX: return "BAD_MUTEX";
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case PTHDB_BAD_MUTEXATTR: return "BAD_MUTEXATTR";
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case PTHDB_BAD_COND: return "BAD_COND";
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case PTHDB_BAD_CONDATTR: return "BAD_CONDATTR";
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case PTHDB_BAD_RWLOCK: return "BAD_RWLOCK";
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case PTHDB_BAD_RWLOCKATTR: return "BAD_RWLOCKATTR";
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case PTHDB_BAD_KEY: return "BAD_KEY";
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case PTHDB_BAD_PTID: return "BAD_PTID";
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case PTHDB_BAD_TID: return "BAD_TID";
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case PTHDB_CALLBACK: return "CALLBACK";
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case PTHDB_CONTEXT: return "CONTEXT";
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case PTHDB_HELD: return "HELD";
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case PTHDB_NOT_HELD: return "NOT_HELD";
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case PTHDB_MEMORY: return "MEMORY";
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case PTHDB_NOT_PTHREADED: return "NOT_PTHREADED";
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case PTHDB_SYMBOL: return "SYMBOL";
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case PTHDB_NOT_AVAIL: return "NOT_AVAIL";
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case PTHDB_INTERNAL: return "INTERNAL";
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default: return "UNKNOWN";
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}
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}
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/* A call to ptrace(REQ, ID, ...) just returned RET. Check for
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exceptional conditions and either return nonlocally or else return
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1 for success and 0 for failure. */
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static int
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ptrace_check (int req, int id, int ret)
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{
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if (ret == 0 && !errno)
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return 1;
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/* According to ptrace(2), ptrace may fail with EPERM if "the
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Identifier parameter corresponds to a kernel thread which is
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stopped in kernel mode and whose computational state cannot be
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read or written." This happens quite often with register reads. */
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switch (req)
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{
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case PTT_READ_GPRS:
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case PTT_READ_FPRS:
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case PTT_READ_SPRS:
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if (ret == -1 && errno == EPERM)
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{
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog,
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"ptrace (%d, %d) = %d (errno = %d)\n",
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req, id, ret, errno);
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return ret == -1 ? 0 : 1;
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}
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break;
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}
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error (_("aix-thread: ptrace (%d, %d) returned %d (errno = %d %s)"),
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req, id, ret, errno, safe_strerror (errno));
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return 0; /* Not reached. */
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}
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/* Call ptracex (REQ, ID, ADDR, DATA, BUF) or
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ptrace64 (REQ, ID, ADDR, DATA, BUF) if HAVE_PTRACE64.
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Return success. */
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#ifdef HAVE_PTRACE64
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# define ptracex(request, pid, addr, data, buf) \
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ptrace64 (request, pid, addr, data, buf)
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#endif
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static int
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ptrace64aix (int req, int id, long long addr, int data, int *buf)
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{
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errno = 0;
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return ptrace_check (req, id, ptracex (req, id, addr, data, buf));
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}
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/* Call ptrace (REQ, ID, ADDR, DATA, BUF) or
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ptrace64 (REQ, ID, ADDR, DATA, BUF) if HAVE_PTRACE64.
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Return success. */
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#ifdef HAVE_PTRACE64
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# define ptrace(request, pid, addr, data, buf) \
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ptrace64 (request, pid, addr, data, buf)
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# define addr_ptr long long
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#else
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# define addr_ptr int *
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#endif
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static int
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ptrace32 (int req, int id, addr_ptr addr, int data, int *buf)
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{
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errno = 0;
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return ptrace_check (req, id,
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ptrace (req, id, addr, data, buf));
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}
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/* If *PIDP is a composite process/thread id, convert it to a
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process id. */
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static void
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pid_to_prc (ptid_t *ptidp)
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{
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ptid_t ptid;
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ptid = *ptidp;
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if (PD_TID (ptid))
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*ptidp = pid_to_ptid (ptid_get_pid (ptid));
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}
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/* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to
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the address of SYMBOLS[<i>].name. */
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static int
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pdc_symbol_addrs (pthdb_user_t user, pthdb_symbol_t *symbols, int count)
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{
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struct bound_minimal_symbol ms;
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int i;
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char *name;
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog,
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"pdc_symbol_addrs (user = %ld, symbols = 0x%lx, count = %d)\n",
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user, (long) symbols, count);
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for (i = 0; i < count; i++)
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{
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name = symbols[i].name;
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog,
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" symbols[%d].name = \"%s\"\n", i, name);
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if (!*name)
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symbols[i].addr = 0;
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else
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{
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ms = lookup_minimal_symbol (name, NULL, NULL);
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if (ms.minsym == NULL)
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{
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog, " returning PDC_FAILURE\n");
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return PDC_FAILURE;
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}
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symbols[i].addr = BMSYMBOL_VALUE_ADDRESS (ms);
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}
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog, " symbols[%d].addr = %s\n",
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i, hex_string (symbols[i].addr));
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}
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog, " returning PDC_SUCCESS\n");
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return PDC_SUCCESS;
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}
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/* Read registers call back function should be able to read the
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context information of a debuggee kernel thread from an active
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process or from a core file. The information should be formatted
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in context64 form for both 32-bit and 64-bit process.
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If successful return 0, else non-zero is returned. */
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static int
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pdc_read_regs (pthdb_user_t user,
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pthdb_tid_t tid,
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unsigned long long flags,
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pthdb_context_t *context)
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{
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/* This function doesn't appear to be used, so we could probably
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just return 0 here. HOWEVER, if it is not defined, the OS will
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complain and several thread debug functions will fail. In case
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this is needed, I have implemented what I think it should do,
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however this code is untested. */
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uint64_t gprs64[ppc_num_gprs];
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uint32_t gprs32[ppc_num_gprs];
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double fprs[ppc_num_fprs];
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struct ptxsprs sprs64;
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struct ptsprs sprs32;
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog, "pdc_read_regs tid=%d flags=%s\n",
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(int) tid, hex_string (flags));
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/* General-purpose registers. */
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if (flags & PTHDB_FLAG_GPRS)
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{
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if (arch64)
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{
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if (!ptrace64aix (PTT_READ_GPRS, tid,
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(unsigned long) gprs64, 0, NULL))
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memset (gprs64, 0, sizeof (gprs64));
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memcpy (context->gpr, gprs64, sizeof(gprs64));
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}
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else
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{
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if (!ptrace32 (PTT_READ_GPRS, tid, (uintptr_t) gprs32, 0, NULL))
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memset (gprs32, 0, sizeof (gprs32));
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memcpy (context->gpr, gprs32, sizeof(gprs32));
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}
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}
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/* Floating-point registers. */
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if (flags & PTHDB_FLAG_FPRS)
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{
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if (!ptrace32 (PTT_READ_FPRS, tid, (uintptr_t) fprs, 0, NULL))
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memset (fprs, 0, sizeof (fprs));
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memcpy (context->fpr, fprs, sizeof(fprs));
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}
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/* Special-purpose registers. */
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if (flags & PTHDB_FLAG_SPRS)
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{
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if (arch64)
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{
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if (!ptrace64aix (PTT_READ_SPRS, tid,
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(unsigned long) &sprs64, 0, NULL))
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memset (&sprs64, 0, sizeof (sprs64));
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memcpy (&context->msr, &sprs64, sizeof(sprs64));
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}
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else
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{
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if (!ptrace32 (PTT_READ_SPRS, tid, (uintptr_t) &sprs32, 0, NULL))
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memset (&sprs32, 0, sizeof (sprs32));
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memcpy (&context->msr, &sprs32, sizeof(sprs32));
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}
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}
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return 0;
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}
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/* Write register function should be able to write requested context
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information to specified debuggee's kernel thread id.
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If successful return 0, else non-zero is returned. */
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static int
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pdc_write_regs (pthdb_user_t user,
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pthdb_tid_t tid,
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unsigned long long flags,
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pthdb_context_t *context)
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{
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/* This function doesn't appear to be used, so we could probably
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|
just return 0 here. HOWEVER, if it is not defined, the OS will
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|
complain and several thread debug functions will fail. In case
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this is needed, I have implemented what I think it should do,
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however this code is untested. */
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog, "pdc_write_regs tid=%d flags=%s\n",
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(int) tid, hex_string (flags));
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/* General-purpose registers. */
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if (flags & PTHDB_FLAG_GPRS)
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{
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if (arch64)
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ptrace64aix (PTT_WRITE_GPRS, tid,
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(unsigned long) context->gpr, 0, NULL);
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else
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ptrace32 (PTT_WRITE_GPRS, tid, (uintptr_t) context->gpr, 0, NULL);
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}
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/* Floating-point registers. */
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if (flags & PTHDB_FLAG_FPRS)
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{
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ptrace32 (PTT_WRITE_FPRS, tid, (uintptr_t) context->fpr, 0, NULL);
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}
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/* Special-purpose registers. */
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if (flags & PTHDB_FLAG_SPRS)
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{
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if (arch64)
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{
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ptrace64aix (PTT_WRITE_SPRS, tid,
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(unsigned long) &context->msr, 0, NULL);
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}
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else
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{
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ptrace32 (PTT_WRITE_SPRS, tid, (uintptr_t) &context->msr, 0, NULL);
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}
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}
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return 0;
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}
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|
/* pthdb callback: read LEN bytes from process ADDR into BUF. */
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static int
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pdc_read_data (pthdb_user_t user, void *buf,
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pthdb_addr_t addr, size_t len)
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|
{
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int status, ret;
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog,
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"pdc_read_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
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user, (long) buf, hex_string (addr), len);
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status = target_read_memory (addr, buf, len);
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ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE;
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n",
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status, pd_status2str (ret));
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return ret;
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}
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/* pthdb callback: write LEN bytes from BUF to process ADDR. */
|
|
|
|
static int
|
|
pdc_write_data (pthdb_user_t user, void *buf,
|
|
pthdb_addr_t addr, size_t len)
|
|
{
|
|
int status, ret;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
"pdc_write_data (user = %ld, buf = 0x%lx, addr = %s, len = %ld)\n",
|
|
user, (long) buf, hex_string (addr), len);
|
|
|
|
status = target_write_memory (addr, buf, len);
|
|
ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s\n", status,
|
|
pd_status2str (ret));
|
|
return ret;
|
|
}
|
|
|
|
/* pthdb callback: allocate a LEN-byte buffer and store a pointer to it
|
|
in BUFP. */
|
|
|
|
static int
|
|
pdc_alloc (pthdb_user_t user, size_t len, void **bufp)
|
|
{
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
"pdc_alloc (user = %ld, len = %ld, bufp = 0x%lx)\n",
|
|
user, len, (long) bufp);
|
|
*bufp = xmalloc (len);
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
" malloc returned 0x%lx\n", (long) *bufp);
|
|
|
|
/* Note: xmalloc() can't return 0; therefore PDC_FAILURE will never
|
|
be returned. */
|
|
|
|
return *bufp ? PDC_SUCCESS : PDC_FAILURE;
|
|
}
|
|
|
|
/* pthdb callback: reallocate BUF, which was allocated by the alloc or
|
|
realloc callback, so that it contains LEN bytes, and store a
|
|
pointer to the result in BUFP. */
|
|
|
|
static int
|
|
pdc_realloc (pthdb_user_t user, void *buf, size_t len, void **bufp)
|
|
{
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
"pdc_realloc (user = %ld, buf = 0x%lx, len = %ld, bufp = 0x%lx)\n",
|
|
user, (long) buf, len, (long) bufp);
|
|
*bufp = xrealloc (buf, len);
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
" realloc returned 0x%lx\n", (long) *bufp);
|
|
return *bufp ? PDC_SUCCESS : PDC_FAILURE;
|
|
}
|
|
|
|
/* pthdb callback: free BUF, which was allocated by the alloc or
|
|
realloc callback. */
|
|
|
|
static int
|
|
pdc_dealloc (pthdb_user_t user, void *buf)
|
|
{
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
"pdc_free (user = %ld, buf = 0x%lx)\n", user,
|
|
(long) buf);
|
|
xfree (buf);
|
|
return PDC_SUCCESS;
|
|
}
|
|
|
|
/* Return a printable representation of pthread STATE. */
|
|
|
|
static char *
|
|
state2str (pthdb_state_t state)
|
|
{
|
|
switch (state)
|
|
{
|
|
case PST_IDLE:
|
|
/* i18n: Like "Thread-Id %d, [state] idle" */
|
|
return _("idle"); /* being created */
|
|
case PST_RUN:
|
|
/* i18n: Like "Thread-Id %d, [state] running" */
|
|
return _("running"); /* running */
|
|
case PST_SLEEP:
|
|
/* i18n: Like "Thread-Id %d, [state] sleeping" */
|
|
return _("sleeping"); /* awaiting an event */
|
|
case PST_READY:
|
|
/* i18n: Like "Thread-Id %d, [state] ready" */
|
|
return _("ready"); /* runnable */
|
|
case PST_TERM:
|
|
/* i18n: Like "Thread-Id %d, [state] finished" */
|
|
return _("finished"); /* awaiting a join/detach */
|
|
default:
|
|
/* i18n: Like "Thread-Id %d, [state] unknown" */
|
|
return _("unknown");
|
|
}
|
|
}
|
|
|
|
/* qsort() comparison function for sorting pd_thread structs by pthid. */
|
|
|
|
static int
|
|
pcmp (const void *p1v, const void *p2v)
|
|
{
|
|
struct pd_thread *p1 = (struct pd_thread *) p1v;
|
|
struct pd_thread *p2 = (struct pd_thread *) p2v;
|
|
return p1->pthid < p2->pthid ? -1 : p1->pthid > p2->pthid;
|
|
}
|
|
|
|
/* iterate_over_threads() callback for counting GDB threads.
|
|
|
|
Do not count the main thread (whose tid is zero). This matches
|
|
the list of threads provided by the pthreaddebug library, which
|
|
does not include that main thread either, and thus allows us
|
|
to compare the two lists. */
|
|
|
|
static int
|
|
giter_count (struct thread_info *thread, void *countp)
|
|
{
|
|
if (PD_TID (thread->ptid))
|
|
(*(int *) countp)++;
|
|
return 0;
|
|
}
|
|
|
|
/* iterate_over_threads() callback for accumulating GDB thread pids.
|
|
|
|
Do not include the main thread (whose tid is zero). This matches
|
|
the list of threads provided by the pthreaddebug library, which
|
|
does not include that main thread either, and thus allows us
|
|
to compare the two lists. */
|
|
|
|
static int
|
|
giter_accum (struct thread_info *thread, void *bufp)
|
|
{
|
|
if (PD_TID (thread->ptid))
|
|
{
|
|
**(struct thread_info ***) bufp = thread;
|
|
(*(struct thread_info ***) bufp)++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* ptid comparison function */
|
|
|
|
static int
|
|
ptid_cmp (ptid_t ptid1, ptid_t ptid2)
|
|
{
|
|
int pid1, pid2;
|
|
|
|
if (ptid_get_pid (ptid1) < ptid_get_pid (ptid2))
|
|
return -1;
|
|
else if (ptid_get_pid (ptid1) > ptid_get_pid (ptid2))
|
|
return 1;
|
|
else if (ptid_get_tid (ptid1) < ptid_get_tid (ptid2))
|
|
return -1;
|
|
else if (ptid_get_tid (ptid1) > ptid_get_tid (ptid2))
|
|
return 1;
|
|
else if (ptid_get_lwp (ptid1) < ptid_get_lwp (ptid2))
|
|
return -1;
|
|
else if (ptid_get_lwp (ptid1) > ptid_get_lwp (ptid2))
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* qsort() comparison function for sorting thread_info structs by pid. */
|
|
|
|
static int
|
|
gcmp (const void *t1v, const void *t2v)
|
|
{
|
|
struct thread_info *t1 = *(struct thread_info **) t1v;
|
|
struct thread_info *t2 = *(struct thread_info **) t2v;
|
|
return ptid_cmp (t1->ptid, t2->ptid);
|
|
}
|
|
|
|
/* Search through the list of all kernel threads for the thread
|
|
that has stopped on a SIGTRAP signal, and return its TID.
|
|
Return 0 if none found. */
|
|
|
|
static pthdb_tid_t
|
|
get_signaled_thread (void)
|
|
{
|
|
struct thrdsinfo64 thrinf;
|
|
tid_t ktid = 0;
|
|
int result = 0;
|
|
|
|
while (1)
|
|
{
|
|
if (getthrds (ptid_get_pid (inferior_ptid), &thrinf,
|
|
sizeof (thrinf), &ktid, 1) != 1)
|
|
break;
|
|
|
|
if (thrinf.ti_cursig == SIGTRAP)
|
|
return thrinf.ti_tid;
|
|
}
|
|
|
|
/* Didn't find any thread stopped on a SIGTRAP signal. */
|
|
return 0;
|
|
}
|
|
|
|
/* Synchronize GDB's thread list with libpthdebug's.
|
|
|
|
There are some benefits of doing this every time the inferior stops:
|
|
|
|
- allows users to run thread-specific commands without needing to
|
|
run "info threads" first
|
|
|
|
- helps pthdb_tid_pthread() work properly (see "libpthdebug
|
|
peculiarities" at the top of this module)
|
|
|
|
- simplifies the demands placed on libpthdebug, which seems to
|
|
have difficulty with certain call patterns */
|
|
|
|
static void
|
|
sync_threadlists (void)
|
|
{
|
|
int cmd, status, infpid;
|
|
int pcount, psize, pi, gcount, gi;
|
|
struct pd_thread *pbuf;
|
|
struct thread_info **gbuf, **g, *thread;
|
|
pthdb_pthread_t pdtid;
|
|
pthread_t pthid;
|
|
pthdb_tid_t tid;
|
|
|
|
/* Accumulate an array of libpthdebug threads sorted by pthread id. */
|
|
|
|
pcount = 0;
|
|
psize = 1;
|
|
pbuf = (struct pd_thread *) xmalloc (psize * sizeof *pbuf);
|
|
|
|
for (cmd = PTHDB_LIST_FIRST;; cmd = PTHDB_LIST_NEXT)
|
|
{
|
|
status = pthdb_pthread (pd_session, &pdtid, cmd);
|
|
if (status != PTHDB_SUCCESS || pdtid == PTHDB_INVALID_PTHREAD)
|
|
break;
|
|
|
|
status = pthdb_pthread_ptid (pd_session, pdtid, &pthid);
|
|
if (status != PTHDB_SUCCESS || pthid == PTHDB_INVALID_PTID)
|
|
continue;
|
|
|
|
if (pcount == psize)
|
|
{
|
|
psize *= 2;
|
|
pbuf = (struct pd_thread *) xrealloc (pbuf,
|
|
psize * sizeof *pbuf);
|
|
}
|
|
pbuf[pcount].pdtid = pdtid;
|
|
pbuf[pcount].pthid = pthid;
|
|
pcount++;
|
|
}
|
|
|
|
for (pi = 0; pi < pcount; pi++)
|
|
{
|
|
status = pthdb_pthread_tid (pd_session, pbuf[pi].pdtid, &tid);
|
|
if (status != PTHDB_SUCCESS)
|
|
tid = PTHDB_INVALID_TID;
|
|
pbuf[pi].tid = tid;
|
|
}
|
|
|
|
qsort (pbuf, pcount, sizeof *pbuf, pcmp);
|
|
|
|
/* Accumulate an array of GDB threads sorted by pid. */
|
|
|
|
gcount = 0;
|
|
iterate_over_threads (giter_count, &gcount);
|
|
g = gbuf = (struct thread_info **) xmalloc (gcount * sizeof *gbuf);
|
|
iterate_over_threads (giter_accum, &g);
|
|
qsort (gbuf, gcount, sizeof *gbuf, gcmp);
|
|
|
|
/* Apply differences between the two arrays to GDB's thread list. */
|
|
|
|
infpid = ptid_get_pid (inferior_ptid);
|
|
for (pi = gi = 0; pi < pcount || gi < gcount;)
|
|
{
|
|
if (pi == pcount)
|
|
{
|
|
delete_thread (gbuf[gi]->ptid);
|
|
gi++;
|
|
}
|
|
else if (gi == gcount)
|
|
{
|
|
thread = add_thread (ptid_build (infpid, 0, pbuf[pi].pthid));
|
|
thread->priv = xmalloc (sizeof (struct private_thread_info));
|
|
thread->priv->pdtid = pbuf[pi].pdtid;
|
|
thread->priv->tid = pbuf[pi].tid;
|
|
pi++;
|
|
}
|
|
else
|
|
{
|
|
ptid_t pptid, gptid;
|
|
int cmp_result;
|
|
|
|
pptid = ptid_build (infpid, 0, pbuf[pi].pthid);
|
|
gptid = gbuf[gi]->ptid;
|
|
pdtid = pbuf[pi].pdtid;
|
|
tid = pbuf[pi].tid;
|
|
|
|
cmp_result = ptid_cmp (pptid, gptid);
|
|
|
|
if (cmp_result == 0)
|
|
{
|
|
gbuf[gi]->priv->pdtid = pdtid;
|
|
gbuf[gi]->priv->tid = tid;
|
|
pi++;
|
|
gi++;
|
|
}
|
|
else if (cmp_result > 0)
|
|
{
|
|
delete_thread (gptid);
|
|
gi++;
|
|
}
|
|
else
|
|
{
|
|
thread = add_thread (pptid);
|
|
thread->priv = xmalloc (sizeof (struct private_thread_info));
|
|
thread->priv->pdtid = pdtid;
|
|
thread->priv->tid = tid;
|
|
pi++;
|
|
}
|
|
}
|
|
}
|
|
|
|
xfree (pbuf);
|
|
xfree (gbuf);
|
|
}
|
|
|
|
/* Iterate_over_threads() callback for locating a thread, using
|
|
the TID of its associated kernel thread. */
|
|
|
|
static int
|
|
iter_tid (struct thread_info *thread, void *tidp)
|
|
{
|
|
const pthdb_tid_t tid = *(pthdb_tid_t *)tidp;
|
|
|
|
return (thread->priv->tid == tid);
|
|
}
|
|
|
|
/* Synchronize libpthdebug's state with the inferior and with GDB,
|
|
generate a composite process/thread <pid> for the current thread,
|
|
set inferior_ptid to <pid> if SET_INFPID, and return <pid>. */
|
|
|
|
static ptid_t
|
|
pd_update (int set_infpid)
|
|
{
|
|
int status;
|
|
ptid_t ptid;
|
|
pthdb_tid_t tid;
|
|
struct thread_info *thread = NULL;
|
|
|
|
if (!pd_active)
|
|
return inferior_ptid;
|
|
|
|
status = pthdb_session_update (pd_session);
|
|
if (status != PTHDB_SUCCESS)
|
|
return inferior_ptid;
|
|
|
|
sync_threadlists ();
|
|
|
|
/* Define "current thread" as one that just received a trap signal. */
|
|
|
|
tid = get_signaled_thread ();
|
|
if (tid != 0)
|
|
thread = iterate_over_threads (iter_tid, &tid);
|
|
if (!thread)
|
|
ptid = inferior_ptid;
|
|
else
|
|
{
|
|
ptid = thread->ptid;
|
|
if (set_infpid)
|
|
inferior_ptid = ptid;
|
|
}
|
|
return ptid;
|
|
}
|
|
|
|
/* Try to start debugging threads in the current process.
|
|
If successful and SET_INFPID, set inferior_ptid to reflect the
|
|
current thread. */
|
|
|
|
static ptid_t
|
|
pd_activate (int set_infpid)
|
|
{
|
|
int status;
|
|
|
|
status = pthdb_session_init (PD_USER, arch64 ? PEM_64BIT : PEM_32BIT,
|
|
PTHDB_FLAG_REGS, &pd_callbacks,
|
|
&pd_session);
|
|
if (status != PTHDB_SUCCESS)
|
|
{
|
|
return inferior_ptid;
|
|
}
|
|
pd_active = 1;
|
|
return pd_update (set_infpid);
|
|
}
|
|
|
|
/* Undo the effects of pd_activate(). */
|
|
|
|
static void
|
|
pd_deactivate (void)
|
|
{
|
|
if (!pd_active)
|
|
return;
|
|
pthdb_session_destroy (pd_session);
|
|
|
|
pid_to_prc (&inferior_ptid);
|
|
pd_active = 0;
|
|
}
|
|
|
|
/* An object file has just been loaded. Check whether the current
|
|
application is pthreaded, and if so, prepare for thread debugging. */
|
|
|
|
static void
|
|
pd_enable (void)
|
|
{
|
|
int status;
|
|
char *stub_name;
|
|
struct bound_minimal_symbol ms;
|
|
|
|
/* Don't initialize twice. */
|
|
if (pd_able)
|
|
return;
|
|
|
|
/* Check application word size. */
|
|
arch64 = register_size (target_gdbarch (), 0) == 8;
|
|
|
|
/* Check whether the application is pthreaded. */
|
|
stub_name = NULL;
|
|
status = pthdb_session_pthreaded (PD_USER, PTHDB_FLAG_REGS,
|
|
&pd_callbacks, &stub_name);
|
|
if ((status != PTHDB_SUCCESS
|
|
&& status != PTHDB_NOT_PTHREADED) || !stub_name)
|
|
return;
|
|
|
|
/* Set a breakpoint on the returned stub function. */
|
|
ms = lookup_minimal_symbol (stub_name, NULL, NULL);
|
|
if (ms.minsym == NULL)
|
|
return;
|
|
pd_brk_addr = BMSYMBOL_VALUE_ADDRESS (ms);
|
|
if (!create_thread_event_breakpoint (target_gdbarch (), pd_brk_addr))
|
|
return;
|
|
|
|
/* Prepare for thread debugging. */
|
|
push_target (&aix_thread_ops);
|
|
pd_able = 1;
|
|
|
|
/* If we're debugging a core file or an attached inferior, the
|
|
pthread library may already have been initialized, so try to
|
|
activate thread debugging. */
|
|
pd_activate (1);
|
|
}
|
|
|
|
/* Undo the effects of pd_enable(). */
|
|
|
|
static void
|
|
pd_disable (void)
|
|
{
|
|
if (!pd_able)
|
|
return;
|
|
if (pd_active)
|
|
pd_deactivate ();
|
|
pd_able = 0;
|
|
unpush_target (&aix_thread_ops);
|
|
}
|
|
|
|
/* new_objfile observer callback.
|
|
|
|
If OBJFILE is non-null, check whether a threaded application is
|
|
being debugged, and if so, prepare for thread debugging.
|
|
|
|
If OBJFILE is null, stop debugging threads. */
|
|
|
|
static void
|
|
new_objfile (struct objfile *objfile)
|
|
{
|
|
if (objfile)
|
|
pd_enable ();
|
|
else
|
|
pd_disable ();
|
|
}
|
|
|
|
/* Attach to process specified by ARGS. */
|
|
|
|
static void
|
|
aix_thread_inferior_created (struct target_ops *ops, int from_tty)
|
|
{
|
|
pd_enable ();
|
|
}
|
|
|
|
/* Detach from the process attached to by aix_thread_attach(). */
|
|
|
|
static void
|
|
aix_thread_detach (struct target_ops *ops, const char *args, int from_tty)
|
|
{
|
|
struct target_ops *beneath = find_target_beneath (ops);
|
|
|
|
pd_disable ();
|
|
beneath->to_detach (beneath, args, from_tty);
|
|
}
|
|
|
|
/* Tell the inferior process to continue running thread PID if != -1
|
|
and all threads otherwise. */
|
|
|
|
static void
|
|
aix_thread_resume (struct target_ops *ops,
|
|
ptid_t ptid, int step, enum gdb_signal sig)
|
|
{
|
|
struct thread_info *thread;
|
|
pthdb_tid_t tid[2];
|
|
|
|
if (!PD_TID (ptid))
|
|
{
|
|
struct cleanup *cleanup = save_inferior_ptid ();
|
|
struct target_ops *beneath = find_target_beneath (ops);
|
|
|
|
inferior_ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
|
|
beneath->to_resume (beneath, ptid, step, sig);
|
|
do_cleanups (cleanup);
|
|
}
|
|
else
|
|
{
|
|
thread = find_thread_ptid (ptid);
|
|
if (!thread)
|
|
error (_("aix-thread resume: unknown pthread %ld"),
|
|
ptid_get_lwp (ptid));
|
|
|
|
tid[0] = thread->priv->tid;
|
|
if (tid[0] == PTHDB_INVALID_TID)
|
|
error (_("aix-thread resume: no tid for pthread %ld"),
|
|
ptid_get_lwp (ptid));
|
|
tid[1] = 0;
|
|
|
|
if (arch64)
|
|
ptrace64aix (PTT_CONTINUE, tid[0], (long long) 1,
|
|
gdb_signal_to_host (sig), (void *) tid);
|
|
else
|
|
ptrace32 (PTT_CONTINUE, tid[0], (addr_ptr) 1,
|
|
gdb_signal_to_host (sig), (void *) tid);
|
|
}
|
|
}
|
|
|
|
/* Wait for thread/process ID if != -1 or for any thread otherwise.
|
|
If an error occurs, return -1, else return the pid of the stopped
|
|
thread. */
|
|
|
|
static ptid_t
|
|
aix_thread_wait (struct target_ops *ops,
|
|
ptid_t ptid, struct target_waitstatus *status, int options)
|
|
{
|
|
struct cleanup *cleanup = save_inferior_ptid ();
|
|
struct target_ops *beneath = find_target_beneath (ops);
|
|
|
|
pid_to_prc (&ptid);
|
|
|
|
inferior_ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
|
|
ptid = beneath->to_wait (beneath, ptid, status, options);
|
|
do_cleanups (cleanup);
|
|
|
|
if (ptid_get_pid (ptid) == -1)
|
|
return pid_to_ptid (-1);
|
|
|
|
/* Check whether libpthdebug might be ready to be initialized. */
|
|
if (!pd_active && status->kind == TARGET_WAITKIND_STOPPED
|
|
&& status->value.sig == GDB_SIGNAL_TRAP)
|
|
{
|
|
struct regcache *regcache = get_thread_regcache (ptid);
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
|
|
if (regcache_read_pc (regcache)
|
|
- gdbarch_decr_pc_after_break (gdbarch) == pd_brk_addr)
|
|
return pd_activate (0);
|
|
}
|
|
|
|
return pd_update (0);
|
|
}
|
|
|
|
/* Record that the 64-bit general-purpose registers contain VALS. */
|
|
|
|
static void
|
|
supply_gprs64 (struct regcache *regcache, uint64_t *vals)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
|
|
int regno;
|
|
|
|
for (regno = 0; regno < ppc_num_gprs; regno++)
|
|
regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + regno,
|
|
(char *) (vals + regno));
|
|
}
|
|
|
|
/* Record that 32-bit register REGNO contains VAL. */
|
|
|
|
static void
|
|
supply_reg32 (struct regcache *regcache, int regno, uint32_t val)
|
|
{
|
|
regcache_raw_supply (regcache, regno, (char *) &val);
|
|
}
|
|
|
|
/* Record that the floating-point registers contain VALS. */
|
|
|
|
static void
|
|
supply_fprs (struct regcache *regcache, double *vals)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
int regno;
|
|
|
|
/* This function should never be called on architectures without
|
|
floating-point registers. */
|
|
gdb_assert (ppc_floating_point_unit_p (gdbarch));
|
|
|
|
for (regno = tdep->ppc_fp0_regnum;
|
|
regno < tdep->ppc_fp0_regnum + ppc_num_fprs;
|
|
regno++)
|
|
regcache_raw_supply (regcache, regno,
|
|
(char *) (vals + regno - tdep->ppc_fp0_regnum));
|
|
}
|
|
|
|
/* Predicate to test whether given register number is a "special" register. */
|
|
static int
|
|
special_register_p (struct gdbarch *gdbarch, int regno)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
return regno == gdbarch_pc_regnum (gdbarch)
|
|
|| regno == tdep->ppc_ps_regnum
|
|
|| regno == tdep->ppc_cr_regnum
|
|
|| regno == tdep->ppc_lr_regnum
|
|
|| regno == tdep->ppc_ctr_regnum
|
|
|| regno == tdep->ppc_xer_regnum
|
|
|| (tdep->ppc_fpscr_regnum >= 0 && regno == tdep->ppc_fpscr_regnum)
|
|
|| (tdep->ppc_mq_regnum >= 0 && regno == tdep->ppc_mq_regnum);
|
|
}
|
|
|
|
|
|
/* Record that the special registers contain the specified 64-bit and
|
|
32-bit values. */
|
|
|
|
static void
|
|
supply_sprs64 (struct regcache *regcache,
|
|
uint64_t iar, uint64_t msr, uint32_t cr,
|
|
uint64_t lr, uint64_t ctr, uint32_t xer,
|
|
uint32_t fpscr)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch),
|
|
(char *) &iar);
|
|
regcache_raw_supply (regcache, tdep->ppc_ps_regnum, (char *) &msr);
|
|
regcache_raw_supply (regcache, tdep->ppc_cr_regnum, (char *) &cr);
|
|
regcache_raw_supply (regcache, tdep->ppc_lr_regnum, (char *) &lr);
|
|
regcache_raw_supply (regcache, tdep->ppc_ctr_regnum, (char *) &ctr);
|
|
regcache_raw_supply (regcache, tdep->ppc_xer_regnum, (char *) &xer);
|
|
if (tdep->ppc_fpscr_regnum >= 0)
|
|
regcache_raw_supply (regcache, tdep->ppc_fpscr_regnum,
|
|
(char *) &fpscr);
|
|
}
|
|
|
|
/* Record that the special registers contain the specified 32-bit
|
|
values. */
|
|
|
|
static void
|
|
supply_sprs32 (struct regcache *regcache,
|
|
uint32_t iar, uint32_t msr, uint32_t cr,
|
|
uint32_t lr, uint32_t ctr, uint32_t xer,
|
|
uint32_t fpscr)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch),
|
|
(char *) &iar);
|
|
regcache_raw_supply (regcache, tdep->ppc_ps_regnum, (char *) &msr);
|
|
regcache_raw_supply (regcache, tdep->ppc_cr_regnum, (char *) &cr);
|
|
regcache_raw_supply (regcache, tdep->ppc_lr_regnum, (char *) &lr);
|
|
regcache_raw_supply (regcache, tdep->ppc_ctr_regnum, (char *) &ctr);
|
|
regcache_raw_supply (regcache, tdep->ppc_xer_regnum, (char *) &xer);
|
|
if (tdep->ppc_fpscr_regnum >= 0)
|
|
regcache_raw_supply (regcache, tdep->ppc_fpscr_regnum,
|
|
(char *) &fpscr);
|
|
}
|
|
|
|
/* Fetch all registers from pthread PDTID, which doesn't have a kernel
|
|
thread.
|
|
|
|
There's no way to query a single register from a non-kernel
|
|
pthread, so there's no need for a single-register version of this
|
|
function. */
|
|
|
|
static void
|
|
fetch_regs_user_thread (struct regcache *regcache, pthdb_pthread_t pdtid)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
int status, i;
|
|
pthdb_context_t ctx;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
"fetch_regs_user_thread %lx\n", (long) pdtid);
|
|
status = pthdb_pthread_context (pd_session, pdtid, &ctx);
|
|
if (status != PTHDB_SUCCESS)
|
|
error (_("aix-thread: fetch_registers: pthdb_pthread_context returned %s"),
|
|
pd_status2str (status));
|
|
|
|
/* General-purpose registers. */
|
|
|
|
if (arch64)
|
|
supply_gprs64 (regcache, ctx.gpr);
|
|
else
|
|
for (i = 0; i < ppc_num_gprs; i++)
|
|
supply_reg32 (regcache, tdep->ppc_gp0_regnum + i, ctx.gpr[i]);
|
|
|
|
/* Floating-point registers. */
|
|
|
|
if (ppc_floating_point_unit_p (gdbarch))
|
|
supply_fprs (regcache, ctx.fpr);
|
|
|
|
/* Special registers. */
|
|
|
|
if (arch64)
|
|
supply_sprs64 (regcache, ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr,
|
|
ctx.xer, ctx.fpscr);
|
|
else
|
|
supply_sprs32 (regcache, ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr,
|
|
ctx.xer, ctx.fpscr);
|
|
}
|
|
|
|
/* Fetch register REGNO if != -1 or all registers otherwise from
|
|
kernel thread TID.
|
|
|
|
AIX provides a way to query all of a kernel thread's GPRs, FPRs, or
|
|
SPRs, but there's no way to query individual registers within those
|
|
groups. Therefore, if REGNO != -1, this function fetches an entire
|
|
group.
|
|
|
|
Unfortunately, kernel thread register queries often fail with
|
|
EPERM, indicating that the thread is in kernel space. This breaks
|
|
backtraces of threads other than the current one. To make that
|
|
breakage obvious without throwing an error to top level (which is
|
|
bad e.g. during "info threads" output), zero registers that can't
|
|
be retrieved. */
|
|
|
|
static void
|
|
fetch_regs_kernel_thread (struct regcache *regcache, int regno,
|
|
pthdb_tid_t tid)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
uint64_t gprs64[ppc_num_gprs];
|
|
uint32_t gprs32[ppc_num_gprs];
|
|
double fprs[ppc_num_fprs];
|
|
struct ptxsprs sprs64;
|
|
struct ptsprs sprs32;
|
|
int i;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
"fetch_regs_kernel_thread tid=%lx regno=%d arch64=%d\n",
|
|
(long) tid, regno, arch64);
|
|
|
|
/* General-purpose registers. */
|
|
if (regno == -1
|
|
|| (tdep->ppc_gp0_regnum <= regno
|
|
&& regno < tdep->ppc_gp0_regnum + ppc_num_gprs))
|
|
{
|
|
if (arch64)
|
|
{
|
|
if (!ptrace64aix (PTT_READ_GPRS, tid,
|
|
(unsigned long) gprs64, 0, NULL))
|
|
memset (gprs64, 0, sizeof (gprs64));
|
|
supply_gprs64 (regcache, gprs64);
|
|
}
|
|
else
|
|
{
|
|
if (!ptrace32 (PTT_READ_GPRS, tid, (uintptr_t) gprs32, 0, NULL))
|
|
memset (gprs32, 0, sizeof (gprs32));
|
|
for (i = 0; i < ppc_num_gprs; i++)
|
|
supply_reg32 (regcache, tdep->ppc_gp0_regnum + i, gprs32[i]);
|
|
}
|
|
}
|
|
|
|
/* Floating-point registers. */
|
|
|
|
if (ppc_floating_point_unit_p (gdbarch)
|
|
&& (regno == -1
|
|
|| (regno >= tdep->ppc_fp0_regnum
|
|
&& regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
|
|
{
|
|
if (!ptrace32 (PTT_READ_FPRS, tid, (uintptr_t) fprs, 0, NULL))
|
|
memset (fprs, 0, sizeof (fprs));
|
|
supply_fprs (regcache, fprs);
|
|
}
|
|
|
|
/* Special-purpose registers. */
|
|
|
|
if (regno == -1 || special_register_p (gdbarch, regno))
|
|
{
|
|
if (arch64)
|
|
{
|
|
if (!ptrace64aix (PTT_READ_SPRS, tid,
|
|
(unsigned long) &sprs64, 0, NULL))
|
|
memset (&sprs64, 0, sizeof (sprs64));
|
|
supply_sprs64 (regcache, sprs64.pt_iar, sprs64.pt_msr,
|
|
sprs64.pt_cr, sprs64.pt_lr, sprs64.pt_ctr,
|
|
sprs64.pt_xer, sprs64.pt_fpscr);
|
|
}
|
|
else
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
if (!ptrace32 (PTT_READ_SPRS, tid, (uintptr_t) &sprs32, 0, NULL))
|
|
memset (&sprs32, 0, sizeof (sprs32));
|
|
supply_sprs32 (regcache, sprs32.pt_iar, sprs32.pt_msr, sprs32.pt_cr,
|
|
sprs32.pt_lr, sprs32.pt_ctr, sprs32.pt_xer,
|
|
sprs32.pt_fpscr);
|
|
|
|
if (tdep->ppc_mq_regnum >= 0)
|
|
regcache_raw_supply (regcache, tdep->ppc_mq_regnum,
|
|
(char *) &sprs32.pt_mq);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Fetch register REGNO if != -1 or all registers otherwise in the
|
|
thread/process specified by inferior_ptid. */
|
|
|
|
static void
|
|
aix_thread_fetch_registers (struct target_ops *ops,
|
|
struct regcache *regcache, int regno)
|
|
{
|
|
struct thread_info *thread;
|
|
pthdb_tid_t tid;
|
|
struct target_ops *beneath = find_target_beneath (ops);
|
|
|
|
if (!PD_TID (inferior_ptid))
|
|
beneath->to_fetch_registers (beneath, regcache, regno);
|
|
else
|
|
{
|
|
thread = find_thread_ptid (inferior_ptid);
|
|
tid = thread->priv->tid;
|
|
|
|
if (tid == PTHDB_INVALID_TID)
|
|
fetch_regs_user_thread (regcache, thread->priv->pdtid);
|
|
else
|
|
fetch_regs_kernel_thread (regcache, regno, tid);
|
|
}
|
|
}
|
|
|
|
/* Store the gp registers into an array of uint32_t or uint64_t. */
|
|
|
|
static void
|
|
fill_gprs64 (const struct regcache *regcache, uint64_t *vals)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
|
|
int regno;
|
|
|
|
for (regno = 0; regno < ppc_num_gprs; regno++)
|
|
if (REG_VALID == regcache_register_status (regcache,
|
|
tdep->ppc_gp0_regnum + regno))
|
|
regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + regno,
|
|
vals + regno);
|
|
}
|
|
|
|
static void
|
|
fill_gprs32 (const struct regcache *regcache, uint32_t *vals)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
|
|
int regno;
|
|
|
|
for (regno = 0; regno < ppc_num_gprs; regno++)
|
|
if (REG_VALID == regcache_register_status (regcache,
|
|
tdep->ppc_gp0_regnum + regno))
|
|
regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + regno,
|
|
vals + regno);
|
|
}
|
|
|
|
/* Store the floating point registers into a double array. */
|
|
static void
|
|
fill_fprs (const struct regcache *regcache, double *vals)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
int regno;
|
|
|
|
/* This function should never be called on architectures without
|
|
floating-point registers. */
|
|
gdb_assert (ppc_floating_point_unit_p (gdbarch));
|
|
|
|
for (regno = tdep->ppc_fp0_regnum;
|
|
regno < tdep->ppc_fp0_regnum + ppc_num_fprs;
|
|
regno++)
|
|
if (REG_VALID == regcache_register_status (regcache, regno))
|
|
regcache_raw_collect (regcache, regno,
|
|
vals + regno - tdep->ppc_fp0_regnum);
|
|
}
|
|
|
|
/* Store the special registers into the specified 64-bit and 32-bit
|
|
locations. */
|
|
|
|
static void
|
|
fill_sprs64 (const struct regcache *regcache,
|
|
uint64_t *iar, uint64_t *msr, uint32_t *cr,
|
|
uint64_t *lr, uint64_t *ctr, uint32_t *xer,
|
|
uint32_t *fpscr)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
/* Verify that the size of the size of the IAR buffer is the
|
|
same as the raw size of the PC (in the register cache). If
|
|
they're not, then either GDB has been built incorrectly, or
|
|
there's some other kind of internal error. To be really safe,
|
|
we should check all of the sizes. */
|
|
gdb_assert (sizeof (*iar) == register_size
|
|
(gdbarch, gdbarch_pc_regnum (gdbarch)));
|
|
|
|
if (REG_VALID == regcache_register_status (regcache,
|
|
gdbarch_pc_regnum (gdbarch)))
|
|
regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch), iar);
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_ps_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_ps_regnum, msr);
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_cr_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_cr_regnum, cr);
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_lr_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_lr_regnum, lr);
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_ctr_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_ctr_regnum, ctr);
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_xer_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_xer_regnum, xer);
|
|
if (tdep->ppc_fpscr_regnum >= 0
|
|
&& REG_VALID == regcache_register_status (regcache,
|
|
tdep->ppc_fpscr_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_fpscr_regnum, fpscr);
|
|
}
|
|
|
|
static void
|
|
fill_sprs32 (const struct regcache *regcache,
|
|
uint32_t *iar, uint32_t *msr, uint32_t *cr,
|
|
uint32_t *lr, uint32_t *ctr, uint32_t *xer,
|
|
uint32_t *fpscr)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
/* Verify that the size of the size of the IAR buffer is the
|
|
same as the raw size of the PC (in the register cache). If
|
|
they're not, then either GDB has been built incorrectly, or
|
|
there's some other kind of internal error. To be really safe,
|
|
we should check all of the sizes. */
|
|
gdb_assert (sizeof (*iar) == register_size (gdbarch,
|
|
gdbarch_pc_regnum (gdbarch)));
|
|
|
|
if (REG_VALID == regcache_register_status (regcache,
|
|
gdbarch_pc_regnum (gdbarch)))
|
|
regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch), iar);
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_ps_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_ps_regnum, msr);
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_cr_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_cr_regnum, cr);
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_lr_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_lr_regnum, lr);
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_ctr_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_ctr_regnum, ctr);
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_xer_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_xer_regnum, xer);
|
|
if (tdep->ppc_fpscr_regnum >= 0
|
|
&& REG_VALID == regcache_register_status (regcache, tdep->ppc_fpscr_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_fpscr_regnum, fpscr);
|
|
}
|
|
|
|
/* Store all registers into pthread PDTID, which doesn't have a kernel
|
|
thread.
|
|
|
|
It's possible to store a single register into a non-kernel pthread,
|
|
but I doubt it's worth the effort. */
|
|
|
|
static void
|
|
store_regs_user_thread (const struct regcache *regcache, pthdb_pthread_t pdtid)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
int status, i;
|
|
pthdb_context_t ctx;
|
|
uint32_t int32;
|
|
uint64_t int64;
|
|
double dbl;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
"store_regs_user_thread %lx\n", (long) pdtid);
|
|
|
|
/* Retrieve the thread's current context for its non-register
|
|
values. */
|
|
status = pthdb_pthread_context (pd_session, pdtid, &ctx);
|
|
if (status != PTHDB_SUCCESS)
|
|
error (_("aix-thread: store_registers: pthdb_pthread_context returned %s"),
|
|
pd_status2str (status));
|
|
|
|
/* Collect general-purpose register values from the regcache. */
|
|
|
|
for (i = 0; i < ppc_num_gprs; i++)
|
|
if (REG_VALID == regcache_register_status (regcache,
|
|
tdep->ppc_gp0_regnum + i))
|
|
{
|
|
if (arch64)
|
|
{
|
|
regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + i,
|
|
(void *) &int64);
|
|
ctx.gpr[i] = int64;
|
|
}
|
|
else
|
|
{
|
|
regcache_raw_collect (regcache, tdep->ppc_gp0_regnum + i,
|
|
(void *) &int32);
|
|
ctx.gpr[i] = int32;
|
|
}
|
|
}
|
|
|
|
/* Collect floating-point register values from the regcache. */
|
|
if (ppc_floating_point_unit_p (gdbarch))
|
|
fill_fprs (regcache, ctx.fpr);
|
|
|
|
/* Special registers (always kept in ctx as 64 bits). */
|
|
if (arch64)
|
|
{
|
|
fill_sprs64 (regcache, &ctx.iar, &ctx.msr, &ctx.cr, &ctx.lr, &ctx.ctr,
|
|
&ctx.xer, &ctx.fpscr);
|
|
}
|
|
else
|
|
{
|
|
/* Problem: ctx.iar etc. are 64 bits, but raw_registers are 32.
|
|
Solution: use 32-bit temp variables. */
|
|
uint32_t tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer,
|
|
tmp_fpscr;
|
|
|
|
fill_sprs32 (regcache, &tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr, &tmp_ctr,
|
|
&tmp_xer, &tmp_fpscr);
|
|
if (REG_VALID == regcache_register_status (regcache,
|
|
gdbarch_pc_regnum (gdbarch)))
|
|
ctx.iar = tmp_iar;
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_ps_regnum))
|
|
ctx.msr = tmp_msr;
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_cr_regnum))
|
|
ctx.cr = tmp_cr;
|
|
if (REG_VALID == regcache_register_status (regcache, tdep->ppc_lr_regnum))
|
|
ctx.lr = tmp_lr;
|
|
if (REG_VALID == regcache_register_status (regcache,
|
|
tdep->ppc_ctr_regnum))
|
|
ctx.ctr = tmp_ctr;
|
|
if (REG_VALID == regcache_register_status (regcache,
|
|
tdep->ppc_xer_regnum))
|
|
ctx.xer = tmp_xer;
|
|
if (REG_VALID == regcache_register_status (regcache,
|
|
tdep->ppc_xer_regnum))
|
|
ctx.fpscr = tmp_fpscr;
|
|
}
|
|
|
|
status = pthdb_pthread_setcontext (pd_session, pdtid, &ctx);
|
|
if (status != PTHDB_SUCCESS)
|
|
error (_("aix-thread: store_registers: "
|
|
"pthdb_pthread_setcontext returned %s"),
|
|
pd_status2str (status));
|
|
}
|
|
|
|
/* Store register REGNO if != -1 or all registers otherwise into
|
|
kernel thread TID.
|
|
|
|
AIX provides a way to set all of a kernel thread's GPRs, FPRs, or
|
|
SPRs, but there's no way to set individual registers within those
|
|
groups. Therefore, if REGNO != -1, this function stores an entire
|
|
group. */
|
|
|
|
static void
|
|
store_regs_kernel_thread (const struct regcache *regcache, int regno,
|
|
pthdb_tid_t tid)
|
|
{
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
uint64_t gprs64[ppc_num_gprs];
|
|
uint32_t gprs32[ppc_num_gprs];
|
|
double fprs[ppc_num_fprs];
|
|
struct ptxsprs sprs64;
|
|
struct ptsprs sprs32;
|
|
int i;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
"store_regs_kernel_thread tid=%lx regno=%d\n",
|
|
(long) tid, regno);
|
|
|
|
/* General-purpose registers. */
|
|
if (regno == -1
|
|
|| (tdep->ppc_gp0_regnum <= regno
|
|
&& regno < tdep->ppc_gp0_regnum + ppc_num_fprs))
|
|
{
|
|
if (arch64)
|
|
{
|
|
/* Pre-fetch: some regs may not be in the cache. */
|
|
ptrace64aix (PTT_READ_GPRS, tid, (unsigned long) gprs64, 0, NULL);
|
|
fill_gprs64 (regcache, gprs64);
|
|
ptrace64aix (PTT_WRITE_GPRS, tid, (unsigned long) gprs64, 0, NULL);
|
|
}
|
|
else
|
|
{
|
|
/* Pre-fetch: some regs may not be in the cache. */
|
|
ptrace32 (PTT_READ_GPRS, tid, (uintptr_t) gprs32, 0, NULL);
|
|
fill_gprs32 (regcache, gprs32);
|
|
ptrace32 (PTT_WRITE_GPRS, tid, (uintptr_t) gprs32, 0, NULL);
|
|
}
|
|
}
|
|
|
|
/* Floating-point registers. */
|
|
|
|
if (ppc_floating_point_unit_p (gdbarch)
|
|
&& (regno == -1
|
|
|| (regno >= tdep->ppc_fp0_regnum
|
|
&& regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
|
|
{
|
|
/* Pre-fetch: some regs may not be in the cache. */
|
|
ptrace32 (PTT_READ_FPRS, tid, (uintptr_t) fprs, 0, NULL);
|
|
fill_fprs (regcache, fprs);
|
|
ptrace32 (PTT_WRITE_FPRS, tid, (uintptr_t) fprs, 0, NULL);
|
|
}
|
|
|
|
/* Special-purpose registers. */
|
|
|
|
if (regno == -1 || special_register_p (gdbarch, regno))
|
|
{
|
|
if (arch64)
|
|
{
|
|
/* Pre-fetch: some registers won't be in the cache. */
|
|
ptrace64aix (PTT_READ_SPRS, tid,
|
|
(unsigned long) &sprs64, 0, NULL);
|
|
fill_sprs64 (regcache, &sprs64.pt_iar, &sprs64.pt_msr,
|
|
&sprs64.pt_cr, &sprs64.pt_lr, &sprs64.pt_ctr,
|
|
&sprs64.pt_xer, &sprs64.pt_fpscr);
|
|
ptrace64aix (PTT_WRITE_SPRS, tid,
|
|
(unsigned long) &sprs64, 0, NULL);
|
|
}
|
|
else
|
|
{
|
|
/* The contents of "struct ptspr" were declared as "unsigned
|
|
long" up to AIX 5.2, but are "unsigned int" since 5.3.
|
|
Use temporaries to work around this problem. Also, add an
|
|
assert here to make sure we fail if the system header files
|
|
use "unsigned long", and the size of that type is not what
|
|
the headers expect. */
|
|
uint32_t tmp_iar, tmp_msr, tmp_cr, tmp_lr, tmp_ctr, tmp_xer,
|
|
tmp_fpscr;
|
|
|
|
gdb_assert (sizeof (sprs32.pt_iar) == 4);
|
|
|
|
/* Pre-fetch: some registers won't be in the cache. */
|
|
ptrace32 (PTT_READ_SPRS, tid, (uintptr_t) &sprs32, 0, NULL);
|
|
|
|
fill_sprs32 (regcache, &tmp_iar, &tmp_msr, &tmp_cr, &tmp_lr,
|
|
&tmp_ctr, &tmp_xer, &tmp_fpscr);
|
|
|
|
sprs32.pt_iar = tmp_iar;
|
|
sprs32.pt_msr = tmp_msr;
|
|
sprs32.pt_cr = tmp_cr;
|
|
sprs32.pt_lr = tmp_lr;
|
|
sprs32.pt_ctr = tmp_ctr;
|
|
sprs32.pt_xer = tmp_xer;
|
|
sprs32.pt_fpscr = tmp_fpscr;
|
|
|
|
if (tdep->ppc_mq_regnum >= 0)
|
|
if (REG_VALID == regcache_register_status (regcache,
|
|
tdep->ppc_mq_regnum))
|
|
regcache_raw_collect (regcache, tdep->ppc_mq_regnum,
|
|
&sprs32.pt_mq);
|
|
|
|
ptrace32 (PTT_WRITE_SPRS, tid, (uintptr_t) &sprs32, 0, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Store gdb's current view of the register set into the
|
|
thread/process specified by inferior_ptid. */
|
|
|
|
static void
|
|
aix_thread_store_registers (struct target_ops *ops,
|
|
struct regcache *regcache, int regno)
|
|
{
|
|
struct thread_info *thread;
|
|
pthdb_tid_t tid;
|
|
struct target_ops *beneath = find_target_beneath (ops);
|
|
|
|
if (!PD_TID (inferior_ptid))
|
|
beneath->to_store_registers (beneath, regcache, regno);
|
|
else
|
|
{
|
|
thread = find_thread_ptid (inferior_ptid);
|
|
tid = thread->priv->tid;
|
|
|
|
if (tid == PTHDB_INVALID_TID)
|
|
store_regs_user_thread (regcache, thread->priv->pdtid);
|
|
else
|
|
store_regs_kernel_thread (regcache, regno, tid);
|
|
}
|
|
}
|
|
|
|
/* Implement the to_xfer_partial target_ops method. */
|
|
|
|
static enum target_xfer_status
|
|
aix_thread_xfer_partial (struct target_ops *ops, enum target_object object,
|
|
const char *annex, gdb_byte *readbuf,
|
|
const gdb_byte *writebuf,
|
|
ULONGEST offset, ULONGEST len, ULONGEST *xfered_len)
|
|
{
|
|
struct cleanup *old_chain = save_inferior_ptid ();
|
|
enum target_xfer_status xfer;
|
|
struct target_ops *beneath = find_target_beneath (ops);
|
|
|
|
inferior_ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
|
|
xfer = beneath->to_xfer_partial (beneath, object, annex, readbuf,
|
|
writebuf, offset, len, xfered_len);
|
|
|
|
do_cleanups (old_chain);
|
|
return xfer;
|
|
}
|
|
|
|
/* Clean up after the inferior exits. */
|
|
|
|
static void
|
|
aix_thread_mourn_inferior (struct target_ops *ops)
|
|
{
|
|
struct target_ops *beneath = find_target_beneath (ops);
|
|
|
|
pd_deactivate ();
|
|
beneath->to_mourn_inferior (beneath);
|
|
}
|
|
|
|
/* Return whether thread PID is still valid. */
|
|
|
|
static int
|
|
aix_thread_thread_alive (struct target_ops *ops, ptid_t ptid)
|
|
{
|
|
struct target_ops *beneath = find_target_beneath (ops);
|
|
|
|
if (!PD_TID (ptid))
|
|
return beneath->to_thread_alive (beneath, ptid);
|
|
|
|
/* We update the thread list every time the child stops, so all
|
|
valid threads should be in the thread list. */
|
|
return in_thread_list (ptid);
|
|
}
|
|
|
|
/* Return a printable representation of composite PID for use in
|
|
"info threads" output. */
|
|
|
|
static char *
|
|
aix_thread_pid_to_str (struct target_ops *ops, ptid_t ptid)
|
|
{
|
|
static char *ret = NULL;
|
|
struct target_ops *beneath = find_target_beneath (ops);
|
|
|
|
if (!PD_TID (ptid))
|
|
return beneath->to_pid_to_str (beneath, ptid);
|
|
|
|
/* Free previous return value; a new one will be allocated by
|
|
xstrprintf(). */
|
|
xfree (ret);
|
|
|
|
ret = xstrprintf (_("Thread %ld"), ptid_get_tid (ptid));
|
|
return ret;
|
|
}
|
|
|
|
/* Return a printable representation of extra information about
|
|
THREAD, for use in "info threads" output. */
|
|
|
|
static char *
|
|
aix_thread_extra_thread_info (struct target_ops *self,
|
|
struct thread_info *thread)
|
|
{
|
|
struct ui_file *buf;
|
|
int status;
|
|
pthdb_pthread_t pdtid;
|
|
pthdb_tid_t tid;
|
|
pthdb_state_t state;
|
|
pthdb_suspendstate_t suspendstate;
|
|
pthdb_detachstate_t detachstate;
|
|
int cancelpend;
|
|
static char *ret = NULL;
|
|
|
|
if (!PD_TID (thread->ptid))
|
|
return NULL;
|
|
|
|
buf = mem_fileopen ();
|
|
|
|
pdtid = thread->priv->pdtid;
|
|
tid = thread->priv->tid;
|
|
|
|
if (tid != PTHDB_INVALID_TID)
|
|
/* i18n: Like "thread-identifier %d, [state] running, suspended" */
|
|
fprintf_unfiltered (buf, _("tid %d"), (int)tid);
|
|
|
|
status = pthdb_pthread_state (pd_session, pdtid, &state);
|
|
if (status != PTHDB_SUCCESS)
|
|
state = PST_NOTSUP;
|
|
fprintf_unfiltered (buf, ", %s", state2str (state));
|
|
|
|
status = pthdb_pthread_suspendstate (pd_session, pdtid,
|
|
&suspendstate);
|
|
if (status == PTHDB_SUCCESS && suspendstate == PSS_SUSPENDED)
|
|
/* i18n: Like "Thread-Id %d, [state] running, suspended" */
|
|
fprintf_unfiltered (buf, _(", suspended"));
|
|
|
|
status = pthdb_pthread_detachstate (pd_session, pdtid,
|
|
&detachstate);
|
|
if (status == PTHDB_SUCCESS && detachstate == PDS_DETACHED)
|
|
/* i18n: Like "Thread-Id %d, [state] running, detached" */
|
|
fprintf_unfiltered (buf, _(", detached"));
|
|
|
|
pthdb_pthread_cancelpend (pd_session, pdtid, &cancelpend);
|
|
if (status == PTHDB_SUCCESS && cancelpend)
|
|
/* i18n: Like "Thread-Id %d, [state] running, cancel pending" */
|
|
fprintf_unfiltered (buf, _(", cancel pending"));
|
|
|
|
ui_file_write (buf, "", 1);
|
|
|
|
xfree (ret); /* Free old buffer. */
|
|
|
|
ret = ui_file_xstrdup (buf, NULL);
|
|
ui_file_delete (buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ptid_t
|
|
aix_thread_get_ada_task_ptid (struct target_ops *self, long lwp, long thread)
|
|
{
|
|
return ptid_build (ptid_get_pid (inferior_ptid), 0, thread);
|
|
}
|
|
|
|
/* Initialize target aix_thread_ops. */
|
|
|
|
static void
|
|
init_aix_thread_ops (void)
|
|
{
|
|
aix_thread_ops.to_shortname = "aix-threads";
|
|
aix_thread_ops.to_longname = _("AIX pthread support");
|
|
aix_thread_ops.to_doc = _("AIX pthread support");
|
|
|
|
aix_thread_ops.to_detach = aix_thread_detach;
|
|
aix_thread_ops.to_resume = aix_thread_resume;
|
|
aix_thread_ops.to_wait = aix_thread_wait;
|
|
aix_thread_ops.to_fetch_registers = aix_thread_fetch_registers;
|
|
aix_thread_ops.to_store_registers = aix_thread_store_registers;
|
|
aix_thread_ops.to_xfer_partial = aix_thread_xfer_partial;
|
|
aix_thread_ops.to_mourn_inferior = aix_thread_mourn_inferior;
|
|
aix_thread_ops.to_thread_alive = aix_thread_thread_alive;
|
|
aix_thread_ops.to_pid_to_str = aix_thread_pid_to_str;
|
|
aix_thread_ops.to_extra_thread_info = aix_thread_extra_thread_info;
|
|
aix_thread_ops.to_get_ada_task_ptid = aix_thread_get_ada_task_ptid;
|
|
aix_thread_ops.to_stratum = thread_stratum;
|
|
aix_thread_ops.to_magic = OPS_MAGIC;
|
|
}
|
|
|
|
/* Module startup initialization function, automagically called by
|
|
init.c. */
|
|
|
|
void _initialize_aix_thread (void);
|
|
|
|
void
|
|
_initialize_aix_thread (void)
|
|
{
|
|
init_aix_thread_ops ();
|
|
complete_target_initialization (&aix_thread_ops);
|
|
|
|
/* Notice when object files get loaded and unloaded. */
|
|
observer_attach_new_objfile (new_objfile);
|
|
|
|
/* Add ourselves to inferior_created event chain.
|
|
This is needed to enable the thread target on "attach". */
|
|
observer_attach_inferior_created (aix_thread_inferior_created);
|
|
|
|
add_setshow_boolean_cmd ("aix-thread", class_maintenance, &debug_aix_thread,
|
|
_("Set debugging of AIX thread module."),
|
|
_("Show debugging of AIX thread module."),
|
|
_("Enables debugging output (used to debug GDB)."),
|
|
NULL, NULL,
|
|
/* FIXME: i18n: Debugging of AIX thread
|
|
module is \"%d\". */
|
|
&setdebuglist, &showdebuglist);
|
|
}
|