8e2c28d425
(DEBUG, DBG, DBG2, dbg): Eliminate. (debug_aix_thread): New static global. (ptrace_check, pdc_symbol_addrs, pdc_read_regs, pdc_write_regs) (pdc_read_data, pdc_write_data, pdc_alloc, pdc_realloc, pdc_dealloc) (fetch_regs_lib, store_regs_lib, store_regs_kern): Rewrite invocations to DBG and DBG2 macros to test against ``debug_aix_thread'' and call fprintf_unfiltered(). (_initialize_aix_thread): Add new command "set debug aix-thread".
1489 lines
40 KiB
C
1489 lines
40 KiB
C
/* Low level interface for debugging AIX 4.3+ pthreads.
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Copyright 1999, 2000, 2002 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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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 it's not
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documented, and after several calls it stops working and causes other
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libpthdebug functions to fail.
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- pthdb_tid_pthread() doesn't always work after pthdb_session_update(),
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but it does work after cycling through all threads using
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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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#if 0
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#include "coff/internal.h" /* for libcoff.h */
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#include "bfd/libcoff.h" /* for xcoff_data */
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#endif
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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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#if 0
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#include <pthread.h>
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#endif
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#include <sched.h>
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#include <sys/pthdebug.h>
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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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/* Build a thread ptid. */
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#define BUILD_THREAD(TID, PID) ptid_build (PID, 0, TID)
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/* Build and lwp ptid. */
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#define BUILD_LWP(LWP, PID) MERGEPID (PID, LWP)
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/* Call error() with a message indicating that libpthdebug FUNC failed with
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STATUS. */
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#define PD_ERROR(func, status) \
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error ("aix-thread: %s returned %s", func, pd_status2str (status))
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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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/* Convert composite process/thread inferior_ptid to a process id, evaluate
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base_ops function CALL, and then restore inferior_ptid. */
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#define CALL_BASE(call) \
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do { \
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struct cleanup *cleanup = save_inferior_ptid (); \
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inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid)); \
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call; \
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do_cleanups (cleanup); \
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} while (0)
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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 ops;
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/* Copy of the target over which ops is pushed. This is
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more convenient than a pointer to child_ops or core_ops, because
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they lack current_target's default callbacks. */
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static struct target_ops base_ops;
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/* Address of the function that libpthread will call when libpthdebug is
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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. Only valid when pd_able is
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true. */
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static int arch64;
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/* Saved pointer to previous owner of target_new_objfile_hook. */
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static void (*target_new_objfile_chain)(struct objfile *);
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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, 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, 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 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 exceptional
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conditions and either return nonlocally or else return 1 for success and 0
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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 Identifier
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parameter corresponds to a kernel thread which is stopped in kernel mode
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and whose computational state cannot be read or written." This happens
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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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goto strange;
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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, strerror (errno));
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strange:
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog, "ptrace (%d, %d) = %d (errno = %d)",
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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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/* Call ptracex(REQ, ID, ADDR, DATA, BUF). Return success. */
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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). Return success. */
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static int
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ptrace32 (int req, int id, int *addr, int data, int *buf)
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{
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errno = 0;
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return ptrace_check (req, id, ptrace (req, id, (int *)addr, data, buf));
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}
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/* If *PIDP is a composite process/thread id, convert it to a 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 (PIDGET (ptid));
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}
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/* pthdb callback: for <i> from 0 to COUNT, set SYMBOLS[<i>].addr to the
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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 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)",
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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, " symbols[%d].name = \"%s\"", 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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if (!(ms = lookup_minimal_symbol (name, NULL, NULL)))
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{
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog, " returning PDC_FAILURE");
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return PDC_FAILURE;
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}
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symbols[i].addr = SYMBOL_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 = 0x%llx",
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i, 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");
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return PDC_SUCCESS;
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}
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|
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/* Read registers call back function should be able to read the context */
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/* information of a debuggee kernel thread from an active process or from */
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/* a core file. The information should be formatted in context64 form for */
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/* both 32-bit and 64-bit process. If successful return 0, else non-zero */
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/* 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 just */
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/* return 0 here. HOWEVER, if it is not defined, the OS will complain */
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/* and several thread debug functions will fail. In case this is needed, */
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/* I have implemented what I think it should do, however this code is */
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/* untested. */
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uint64_t gprs64[32];
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uint32_t gprs32[32];
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double fprs[32];
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struct ptxsprs sprs64;
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struct ptsprs sprs32;
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|
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if (debug_aix_thread)
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fprintf_unfiltered (gdb_stdlog, "pdc_read_regs tid=%d flags=%llx\n",
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(int)tid, flags);
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|
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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, (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, 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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}
|
|
|
|
/* 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, (int *) 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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}
|
|
|
|
/* Special-purpose registers. */
|
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if (flags & PTHDB_FLAG_SPRS)
|
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{
|
|
if (arch64)
|
|
{
|
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if (!ptrace64aix (PTT_READ_SPRS, tid, (unsigned long) &sprs64, 0, NULL))
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memset (&sprs64, 0, sizeof (sprs64));
|
|
memcpy (&context->msr, &sprs64, sizeof(sprs64));
|
|
}
|
|
else
|
|
{
|
|
if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL))
|
|
memset (&sprs32, 0, sizeof (sprs32));
|
|
memcpy (&context->msr, &sprs32, sizeof(sprs32));
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Write register function should be able to write requested context */
|
|
/* information to specified debuggee's kernel thread id. If successful */
|
|
/* return 0, else non-zero is returned. */
|
|
static int
|
|
pdc_write_regs (pthdb_user_t user,
|
|
pthdb_tid_t tid,
|
|
unsigned long long flags,
|
|
pthdb_context_t *context)
|
|
{
|
|
/* this function doesn't appear to be used, so we could probably just */
|
|
/* return 0 here. HOWEVER, if it is not defined, the OS will complain */
|
|
/* and several thread debug functions will fail. In case this is needed, */
|
|
/* I have implemented what I think it should do, however this code is */
|
|
/* untested. */
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog, "pdc_write_regs tid=%d flags=%llx\n",
|
|
(int)tid, flags);
|
|
|
|
/* General-purpose registers. */
|
|
if (flags & PTHDB_FLAG_GPRS)
|
|
{
|
|
if (arch64)
|
|
ptrace64aix (PTT_WRITE_GPRS, tid, (unsigned long)context->gpr, 0, NULL);
|
|
else
|
|
ptrace32 (PTT_WRITE_GPRS, tid, (int *)context->gpr, 0, NULL);
|
|
}
|
|
|
|
/* Floating-point registers. */
|
|
if (flags & PTHDB_FLAG_FPRS)
|
|
{
|
|
ptrace32 (PTT_WRITE_FPRS, tid, (int *)context->fpr, 0, NULL);
|
|
}
|
|
|
|
/* Special-purpose registers. */
|
|
if (flags & PTHDB_FLAG_SPRS)
|
|
{
|
|
if (arch64)
|
|
{
|
|
ptrace64aix (PTT_WRITE_SPRS, tid, (unsigned long) &context->msr, 0, NULL);
|
|
}
|
|
else
|
|
{
|
|
ptrace32 (PTT_WRITE_SPRS, tid, (int *)&context->msr, 0, NULL);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* pthdb callback: read LEN bytes from process ADDR into BUF. */
|
|
|
|
static int
|
|
pdc_read_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_read_data (user = %ld, buf = 0x%lx, addr = 0x%llx, len = %ld)",
|
|
user, (long) buf, addr, len);
|
|
|
|
status = target_read_memory (addr, buf, len);
|
|
ret = status == 0 ? PDC_SUCCESS : PDC_FAILURE;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog, " status=%d, returning %s", status,
|
|
pd_status2str (ret));
|
|
return ret;
|
|
}
|
|
|
|
/* 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 = 0x%llx, len = %ld)",
|
|
user, (long) buf, 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", 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)",
|
|
user, len, (long) bufp);
|
|
*bufp = xmalloc (len);
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog, " malloc returned 0x%lx", (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)",
|
|
user, (long) buf, len, (long) bufp);
|
|
*bufp = realloc (buf, len);
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog, " realloc returned 0x%lx", (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)", 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: return "idle"; /* being created */
|
|
case PST_RUN: return "running"; /* running */
|
|
case PST_SLEEP: return "sleeping"; /* awaiting an event */
|
|
case PST_READY: return "ready"; /* runnable */
|
|
case PST_TERM: return "finished"; /* awaiting a join/detach */
|
|
default: 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. */
|
|
|
|
static int
|
|
giter_count (struct thread_info *thread, void *countp)
|
|
{
|
|
(*(int *) countp)++;
|
|
return 0;
|
|
}
|
|
|
|
/* iterate_over_threads() callback for accumulating GDB thread pids. */
|
|
|
|
static int
|
|
giter_accum (struct thread_info *thread, void *bufp)
|
|
{
|
|
**(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);
|
|
}
|
|
|
|
/* 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;
|
|
ptid_t pptid, gptid;
|
|
|
|
/* 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 = PIDGET (inferior_ptid);
|
|
for (pi = gi = 0; pi < pcount || gi < gcount;)
|
|
{
|
|
pptid = BUILD_THREAD (pbuf[pi].pthid, infpid);
|
|
gptid = gbuf[gi]->ptid;
|
|
pdtid = pbuf[pi].pdtid;
|
|
tid = pbuf[pi].tid;
|
|
|
|
if (pi == pcount)
|
|
goto del;
|
|
if (gi == gcount)
|
|
goto add;
|
|
|
|
if (ptid_equal (pptid, gptid))
|
|
{
|
|
gbuf[gi]->private->pdtid = pdtid;
|
|
gbuf[gi]->private->tid = tid;
|
|
pi++;
|
|
gi++;
|
|
}
|
|
else if (ptid_cmp (pptid, gptid) > 0)
|
|
{
|
|
del:
|
|
delete_thread (gptid);
|
|
gi++;
|
|
}
|
|
else
|
|
{
|
|
add:
|
|
thread = add_thread (pptid);
|
|
thread->private = xmalloc (sizeof (struct private_thread_info));
|
|
thread->private->pdtid = pdtid;
|
|
thread->private->tid = tid;
|
|
pi++;
|
|
}
|
|
|
|
}
|
|
|
|
xfree (pbuf);
|
|
xfree (gbuf);
|
|
}
|
|
|
|
/* iterate_over_threads() callback for locating a thread whose kernel thread
|
|
just received a trap signal. */
|
|
|
|
static int
|
|
iter_trap (struct thread_info *thread, void *unused)
|
|
{
|
|
struct thrdsinfo64 thrinf;
|
|
pthdb_tid_t tid;
|
|
|
|
/* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file. */
|
|
extern int getthrds (pid_t, struct thrdsinfo64 *, int, pthdb_tid_t *, int);
|
|
|
|
tid = thread->private->tid;
|
|
if (tid == PTHDB_INVALID_TID)
|
|
return 0;
|
|
|
|
if (getthrds (PIDGET (inferior_ptid), &thrinf, sizeof (thrinf), &tid, 1) != 1)
|
|
return 0;
|
|
|
|
return thrinf.ti_cursig == SIGTRAP;
|
|
}
|
|
|
|
/* 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;
|
|
struct thread_info *thread;
|
|
|
|
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. */
|
|
|
|
thread = iterate_over_threads (iter_trap, NULL);
|
|
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 minimal_symbol *ms;
|
|
|
|
/* Don't initialize twice. */
|
|
if (pd_able)
|
|
return;
|
|
|
|
/* Check application word size. */
|
|
arch64 = REGISTER_RAW_SIZE (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. */
|
|
if (!(ms = lookup_minimal_symbol (stub_name, NULL, NULL)))
|
|
return;
|
|
pd_brk_addr = SYMBOL_VALUE_ADDRESS (ms);
|
|
if (!create_thread_event_breakpoint (pd_brk_addr))
|
|
return;
|
|
|
|
/* Prepare for thread debugging. */
|
|
base_ops = current_target;
|
|
push_target (&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 (&ops);
|
|
}
|
|
|
|
/* target_new_objfile_hook 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 ();
|
|
|
|
if (target_new_objfile_chain)
|
|
target_new_objfile_chain (objfile);
|
|
}
|
|
|
|
/* Attach to process specified by ARGS. */
|
|
|
|
static void
|
|
ops_attach (char *args, int from_tty)
|
|
{
|
|
base_ops.to_attach (args, from_tty);
|
|
pd_activate (1);
|
|
}
|
|
|
|
/* Detach from the process attached to by ops_attach(). */
|
|
|
|
static void
|
|
ops_detach (char *args, int from_tty)
|
|
{
|
|
pd_deactivate ();
|
|
base_ops.to_detach (args, from_tty);
|
|
}
|
|
|
|
/* Tell the inferior process to continue running thread PID if != -1
|
|
and all threads otherwise. */
|
|
|
|
static void
|
|
ops_resume (ptid_t ptid, int step, enum target_signal sig)
|
|
{
|
|
struct thread_info *thread;
|
|
pthdb_tid_t tid[2];
|
|
|
|
if (!PD_TID (ptid))
|
|
CALL_BASE (base_ops.to_resume (ptid, step, sig));
|
|
else
|
|
{
|
|
thread = find_thread_pid (ptid);
|
|
if (!thread)
|
|
error ("aix-thread resume: unknown pthread %ld", TIDGET (ptid));
|
|
|
|
tid[0] = thread->private->tid;
|
|
if (tid[0] == PTHDB_INVALID_TID)
|
|
error ("aix-thread resume: no tid for pthread %ld", TIDGET (ptid));
|
|
tid[1] = 0;
|
|
|
|
if (arch64)
|
|
ptrace64aix (PTT_CONTINUE, tid[0], 1, target_signal_to_host (sig), (int *)tid);
|
|
else
|
|
ptrace32 (PTT_CONTINUE, tid[0], (int *) 1,
|
|
target_signal_to_host (sig), (int *)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
|
|
ops_wait (ptid_t ptid, struct target_waitstatus *status)
|
|
{
|
|
pid_to_prc (&ptid);
|
|
CALL_BASE (ptid = base_ops.to_wait (ptid, status));
|
|
if (PIDGET (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 == TARGET_SIGNAL_TRAP &&
|
|
read_pc_pid (ptid) - DECR_PC_AFTER_BREAK == 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 (uint64_t *vals)
|
|
{
|
|
int regno;
|
|
|
|
for (regno = 0; regno < 32; regno++)
|
|
supply_register (regno, (char *) (vals + regno));
|
|
}
|
|
|
|
/* Record that 32-bit register REGNO contains VAL. */
|
|
|
|
static void
|
|
supply_reg32 (int regno, uint32_t val)
|
|
{
|
|
supply_register (regno, (char *) &val);
|
|
}
|
|
|
|
/* Record that the floating-point registers contain VALS. */
|
|
|
|
static void
|
|
supply_fprs (double *vals)
|
|
{
|
|
int regno;
|
|
|
|
for (regno = 0; regno < 32; regno++)
|
|
supply_register (regno + FP0_REGNUM, (char *) (vals + regno));
|
|
}
|
|
|
|
/* Record that the special registers contain the specified 64-bit and 32-bit
|
|
values. */
|
|
|
|
static void
|
|
supply_sprs64 (uint64_t iar, uint64_t msr, uint32_t cr,
|
|
uint64_t lr, uint64_t ctr, uint32_t xer)
|
|
{
|
|
int regno = FIRST_UISA_SP_REGNUM;
|
|
supply_register (regno, (char *) &iar);
|
|
supply_register (regno + 1, (char *) &msr);
|
|
supply_register (regno + 2, (char *) &cr);
|
|
supply_register (regno + 3, (char *) &lr);
|
|
supply_register (regno + 4, (char *) &ctr);
|
|
supply_register (regno + 5, (char *) &xer);
|
|
}
|
|
|
|
/* Record that the special registers contain the specified 32-bit values. */
|
|
|
|
static void
|
|
supply_sprs32 (uint32_t iar, uint32_t msr, uint32_t cr,
|
|
uint32_t lr, uint32_t ctr, uint32_t xer)
|
|
{
|
|
int regno = FIRST_UISA_SP_REGNUM;
|
|
supply_register (regno, (char *) &iar);
|
|
supply_register (regno + 1, (char *) &msr);
|
|
supply_register (regno + 2, (char *) &cr);
|
|
supply_register (regno + 3, (char *) &lr);
|
|
supply_register (regno + 4, (char *) &ctr);
|
|
supply_register (regno + 5, (char *) &xer);
|
|
}
|
|
|
|
/* 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_lib (pthdb_pthread_t pdtid)
|
|
{
|
|
int status, i;
|
|
pthdb_context_t ctx;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog, "fetch_regs_lib %lx\n", (long)pdtid);
|
|
status = pthdb_pthread_context (pd_session, pdtid, &ctx);
|
|
if (status != PTHDB_SUCCESS)
|
|
PD_ERROR ("fetch_registers: pthdb_pthread_context", status);
|
|
|
|
/* General-purpose registers. */
|
|
|
|
if (arch64)
|
|
supply_gprs64 (ctx.gpr);
|
|
else
|
|
for (i = 0; i < 32; i++)
|
|
supply_reg32 (i, ctx.gpr[i]);
|
|
|
|
/* Floating-point registers. */
|
|
|
|
supply_fprs (ctx.fpr);
|
|
|
|
/* Special registers. */
|
|
|
|
if (arch64)
|
|
supply_sprs64 (ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, ctx.xer);
|
|
else
|
|
supply_sprs32 (ctx.iar, ctx.msr, ctx.cr, ctx.lr, ctx.ctr, ctx.xer);
|
|
}
|
|
|
|
/* 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_kern (int regno, pthdb_tid_t tid)
|
|
{
|
|
uint64_t gprs64[32];
|
|
uint32_t gprs32[32];
|
|
double fprs[32];
|
|
struct ptxsprs sprs64;
|
|
struct ptsprs sprs32;
|
|
int i;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog,
|
|
"fetch_regs_kern tid=%lx regno=%d arch64=%d\n",
|
|
(long)tid, regno, arch64);
|
|
|
|
/* General-purpose registers. */
|
|
if (regno == -1 || regno < FP0_REGNUM)
|
|
{
|
|
if (arch64)
|
|
{
|
|
if (!ptrace64aix (PTT_READ_GPRS, tid, (unsigned long) gprs64, 0, NULL))
|
|
memset (gprs64, 0, sizeof (gprs64));
|
|
supply_gprs64 (gprs64);
|
|
}
|
|
else
|
|
{
|
|
if (!ptrace32 (PTT_READ_GPRS, tid, gprs32, 0, NULL))
|
|
memset (gprs32, 0, sizeof (gprs32));
|
|
for (i = 0; i < 32; i++)
|
|
supply_reg32 (i, gprs32[i]);
|
|
}
|
|
}
|
|
|
|
/* Floating-point registers. */
|
|
|
|
if (regno == -1 || (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM))
|
|
{
|
|
if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL))
|
|
memset (fprs, 0, sizeof (fprs));
|
|
supply_fprs (fprs);
|
|
}
|
|
|
|
/* Special-purpose registers. */
|
|
|
|
if (regno == -1 || (regno > FPLAST_REGNUM && regno <= LAST_UISA_SP_REGNUM))
|
|
{
|
|
if (arch64)
|
|
{
|
|
if (!ptrace64aix (PTT_READ_SPRS, tid, (unsigned long) &sprs64, 0, NULL))
|
|
memset (&sprs64, 0, sizeof (sprs64));
|
|
supply_sprs64 (sprs64.pt_iar, sprs64.pt_msr, sprs64.pt_cr,
|
|
sprs64.pt_lr, sprs64.pt_ctr, sprs64.pt_xer);
|
|
}
|
|
else
|
|
{
|
|
if (!ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL))
|
|
memset (&sprs32, 0, sizeof (sprs32));
|
|
supply_sprs32 (sprs32.pt_iar, sprs32.pt_msr, sprs32.pt_cr,
|
|
sprs32.pt_lr, sprs32.pt_ctr, sprs32.pt_xer);
|
|
|
|
if (REGISTER_RAW_SIZE (LAST_UISA_SP_REGNUM))
|
|
supply_register (LAST_UISA_SP_REGNUM, (char *) &sprs32.pt_mq);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Fetch register REGNO if != -1 or all registers otherwise in the
|
|
thread/process specified by inferior_ptid. */
|
|
|
|
static void
|
|
ops_fetch_registers (int regno)
|
|
{
|
|
struct thread_info *thread;
|
|
pthdb_tid_t tid;
|
|
|
|
if (!PD_TID (inferior_ptid))
|
|
base_ops.to_fetch_registers (regno);
|
|
else
|
|
{
|
|
thread = find_thread_pid (inferior_ptid);
|
|
tid = thread->private->tid;
|
|
|
|
if (tid == PTHDB_INVALID_TID)
|
|
fetch_regs_lib (thread->private->pdtid);
|
|
else
|
|
fetch_regs_kern (regno, tid);
|
|
}
|
|
}
|
|
|
|
/* Store the special registers into the specified 64-bit and 32-bit
|
|
locations. */
|
|
|
|
static void
|
|
fill_sprs64 (uint64_t *iar, uint64_t *msr, uint32_t *cr,
|
|
uint64_t *lr, uint64_t *ctr, uint32_t *xer)
|
|
{
|
|
int regno = FIRST_UISA_SP_REGNUM;
|
|
*iar = read_register (regno);
|
|
*msr = read_register (regno + 1);
|
|
*cr = read_register (regno + 2);
|
|
*lr = read_register (regno + 3);
|
|
*ctr = read_register (regno + 4);
|
|
*xer = read_register (regno + 5);
|
|
}
|
|
|
|
/* 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_lib (pthdb_pthread_t pdtid)
|
|
{
|
|
int status, i;
|
|
pthdb_context_t ctx;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog, "store_regs_lib %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)
|
|
PD_ERROR ("store_registers: pthdb_pthread_context", status);
|
|
|
|
/* General-purpose registers. */
|
|
|
|
for (i = 0; i < 32; i++)
|
|
ctx.gpr[i] = read_register (i);
|
|
|
|
/* Floating-point registers. */
|
|
|
|
for (i = 0; i < 32; i++)
|
|
ctx.fpr[i] = *(double *) ®isters[REGISTER_BYTE (FP0_REGNUM + i)];
|
|
|
|
/* Special registers. */
|
|
|
|
fill_sprs64 (&ctx.iar, &ctx.msr, &ctx.cr, &ctx.lr, &ctx.ctr, &ctx.xer);
|
|
|
|
status = pthdb_pthread_setcontext (pd_session, pdtid, &ctx);
|
|
if (status != PTHDB_SUCCESS)
|
|
PD_ERROR ("store_registers: pthdb_pthread_setcontext", 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_kern (int regno, pthdb_tid_t tid)
|
|
{
|
|
struct ptxsprs sprs64;
|
|
struct ptsprs sprs32;
|
|
char *regp;
|
|
|
|
if (debug_aix_thread)
|
|
fprintf_unfiltered (gdb_stdlog, "store_regs_kern tid=%lx regno=%d\n",
|
|
(long)tid, regno);
|
|
|
|
/* General-purpose registers. */
|
|
if (regno == -1 || regno < FP0_REGNUM)
|
|
{
|
|
regp = ®isters[REGISTER_BYTE (0)];
|
|
if (arch64)
|
|
ptrace64aix (PTT_WRITE_GPRS, tid, (unsigned long) regp, 0, NULL);
|
|
else
|
|
ptrace32 (PTT_WRITE_GPRS, tid, (int *) regp, 0, NULL);
|
|
}
|
|
|
|
/* Floating-point registers. */
|
|
|
|
if (regno == -1 || (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM))
|
|
{
|
|
regp = ®isters[REGISTER_BYTE (FP0_REGNUM)];
|
|
ptrace32 (PTT_WRITE_FPRS, tid, (int *) regp, 0, NULL);
|
|
}
|
|
|
|
/* Special-purpose registers. */
|
|
|
|
if (regno == -1 || (regno > FPLAST_REGNUM && regno <= LAST_UISA_SP_REGNUM))
|
|
{
|
|
if (arch64)
|
|
{
|
|
ptrace64aix (PTT_READ_SPRS, tid, (unsigned long) &sprs64, 0, NULL);
|
|
fill_sprs64 (&sprs64.pt_iar, &sprs64.pt_msr, &sprs64.pt_cr,
|
|
&sprs64.pt_lr, &sprs64.pt_ctr, &sprs64.pt_xer);
|
|
ptrace64aix (PTT_WRITE_SPRS, tid, (unsigned long) &sprs64, 0, NULL);
|
|
}
|
|
else
|
|
{
|
|
ptrace32 (PTT_READ_SPRS, tid, (int *) &sprs32, 0, NULL);
|
|
|
|
regno = FIRST_UISA_SP_REGNUM;
|
|
sprs32.pt_iar = read_register (regno);
|
|
sprs32.pt_msr = read_register (regno + 1);
|
|
sprs32.pt_cr = read_register (regno + 2);
|
|
sprs32.pt_lr = read_register (regno + 3);
|
|
sprs32.pt_ctr = read_register (regno + 4);
|
|
sprs32.pt_xer = read_register (regno + 5);
|
|
|
|
if (REGISTER_RAW_SIZE (LAST_UISA_SP_REGNUM))
|
|
sprs32.pt_mq = read_register (LAST_UISA_SP_REGNUM);
|
|
|
|
ptrace32 (PTT_WRITE_SPRS, tid, (int *) &sprs32, 0, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Store gdb's current view of the register set into the thread/process
|
|
specified by inferior_ptid. */
|
|
|
|
static void
|
|
ops_store_registers (int regno)
|
|
{
|
|
struct thread_info *thread;
|
|
pthdb_tid_t tid;
|
|
|
|
if (!PD_TID (inferior_ptid))
|
|
base_ops.to_store_registers (regno);
|
|
else
|
|
{
|
|
thread = find_thread_pid (inferior_ptid);
|
|
tid = thread->private->tid;
|
|
|
|
if (tid == PTHDB_INVALID_TID)
|
|
store_regs_lib (thread->private->pdtid);
|
|
else
|
|
store_regs_kern (regno, tid);
|
|
}
|
|
}
|
|
|
|
/* Prepare to modify the registers array. */
|
|
|
|
static void
|
|
ops_prepare_to_store (void)
|
|
{
|
|
if (!PD_TID (inferior_ptid))
|
|
base_ops.to_prepare_to_store ();
|
|
else
|
|
read_register_bytes (0, NULL, REGISTER_BYTES);
|
|
}
|
|
|
|
/* Transfer LEN bytes of memory from GDB address MYADDR to target address
|
|
MEMADDR if WRITE and vice versa otherwise. */
|
|
|
|
static int
|
|
ops_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
|
|
struct mem_attrib *attrib,
|
|
struct target_ops *target)
|
|
{
|
|
int n;
|
|
|
|
CALL_BASE (n = base_ops.to_xfer_memory (memaddr, myaddr, len, write,
|
|
attrib, &base_ops));
|
|
return n;
|
|
}
|
|
|
|
/* Kill and forget about the inferior process. */
|
|
|
|
static void
|
|
ops_kill (void)
|
|
{
|
|
CALL_BASE (base_ops.to_kill ());
|
|
}
|
|
|
|
/* Clean up after the inferior exits. */
|
|
|
|
static void
|
|
ops_mourn_inferior (void)
|
|
{
|
|
pd_deactivate ();
|
|
base_ops.to_mourn_inferior ();
|
|
}
|
|
|
|
/* Return whether thread PID is still valid. */
|
|
|
|
static int
|
|
ops_thread_alive (ptid_t ptid)
|
|
{
|
|
if (!PD_TID (ptid))
|
|
return base_ops.to_thread_alive (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 *
|
|
ops_pid_to_str (ptid_t ptid)
|
|
{
|
|
static char *ret = NULL;
|
|
|
|
if (!PD_TID (ptid))
|
|
return base_ops.to_pid_to_str (ptid);
|
|
|
|
/* Free previous return value; a new one will be allocated by
|
|
xasprintf(). */
|
|
xfree (ret);
|
|
|
|
xasprintf (&ret, "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 *
|
|
ops_extra_thread_info (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;
|
|
long length;
|
|
static char *ret = NULL;
|
|
|
|
if (!PD_TID (thread->ptid))
|
|
return NULL;
|
|
|
|
buf = mem_fileopen ();
|
|
|
|
pdtid = thread->private->pdtid;
|
|
tid = thread->private->tid;
|
|
|
|
if (tid != PTHDB_INVALID_TID)
|
|
fprintf_unfiltered (buf, "tid %d", 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)
|
|
fprintf_unfiltered (buf, ", suspended");
|
|
|
|
status = pthdb_pthread_detachstate (pd_session, pdtid, &detachstate);
|
|
if (status == PTHDB_SUCCESS && detachstate == PDS_DETACHED)
|
|
fprintf_unfiltered (buf, ", detached");
|
|
|
|
pthdb_pthread_cancelpend (pd_session, pdtid, &cancelpend);
|
|
if (status == PTHDB_SUCCESS && cancelpend)
|
|
fprintf_unfiltered (buf, ", cancel pending");
|
|
|
|
ui_file_write (buf, "", 1);
|
|
|
|
xfree (ret); /* Free old buffer. */
|
|
|
|
ret = ui_file_xstrdup (buf, &length);
|
|
ui_file_delete (buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Initialize target ops. */
|
|
|
|
static void
|
|
init_ops (void)
|
|
{
|
|
ops.to_shortname = "aix-threads";
|
|
ops.to_longname = "AIX pthread support";
|
|
ops.to_doc = "AIX pthread support";
|
|
|
|
ops.to_attach = ops_attach;
|
|
ops.to_detach = ops_detach;
|
|
ops.to_resume = ops_resume;
|
|
ops.to_wait = ops_wait;
|
|
ops.to_fetch_registers = ops_fetch_registers;
|
|
ops.to_store_registers = ops_store_registers;
|
|
ops.to_prepare_to_store = ops_prepare_to_store;
|
|
ops.to_xfer_memory = ops_xfer_memory;
|
|
/* No need for ops.to_create_inferior, because we activate thread debugging
|
|
when the inferior reaches pd_brk_addr. */
|
|
ops.to_kill = ops_kill;
|
|
ops.to_mourn_inferior = ops_mourn_inferior;
|
|
ops.to_thread_alive = ops_thread_alive;
|
|
ops.to_pid_to_str = ops_pid_to_str;
|
|
ops.to_extra_thread_info = ops_extra_thread_info;
|
|
ops.to_stratum = thread_stratum;
|
|
ops.to_magic = OPS_MAGIC;
|
|
}
|
|
|
|
/* Module startup initialization function, automagically called by
|
|
init.c. */
|
|
|
|
void
|
|
_initialize_aix_thread (void)
|
|
{
|
|
init_ops ();
|
|
add_target (&ops);
|
|
|
|
/* Notice when object files get loaded and unloaded. */
|
|
target_new_objfile_chain = target_new_objfile_hook;
|
|
target_new_objfile_hook = new_objfile;
|
|
|
|
add_show_from_set (add_set_cmd ("aix-thread", no_class, var_zinteger,
|
|
(char *) &debug_aix_thread,
|
|
"Set debugging of AIX thread module.\n"
|
|
"Enables printf debugging output.\n",
|
|
&setdebuglist),
|
|
&showdebuglist);
|
|
}
|