/* Low level interface for debugging AIX 4.3+ pthreads.
- Copyright (C) 1999, 2000, 2002, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000, 2002, 2007, 2008, 2009
+ Free Software Foundation, Inc.
Written by Nick Duffek <nsd@redhat.com>.
This file is part of GDB.
static struct target_ops aix_thread_ops;
-/* Copy of the target over which ops is pushed. This is more
- convenient than a pointer to deprecated_child_ops or core_ops,
- because they lack current_target's default callbacks. */
-
-static struct target_ops base_target;
-
/* Address of the function that libpthread will call when libpthdebug
is ready to be initialized. */
/* Floating-point registers. */
if (flags & PTHDB_FLAG_FPRS)
{
- if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL))
+ if (!ptrace32 (PTT_READ_FPRS, tid, (void *) fprs, 0, NULL))
memset (fprs, 0, sizeof (fprs));
- memcpy (context->fpr, fprs, sizeof(fprs));
+ memcpy (context->fpr, fprs, sizeof(fprs));
}
/* Special-purpose registers. */
}
else
{
- ptrace32 (PTT_WRITE_SPRS, tid, (int *) &context->msr, 0, NULL);
+ ptrace32 (PTT_WRITE_SPRS, tid, (void *) &context->msr, 0, NULL);
}
}
return 0;
return p1->pthid < p2->pthid ? -1 : p1->pthid > p2->pthid;
}
-/* iterate_over_threads() callback for counting GDB threads. */
+/* 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)
{
- (*(int *) countp)++;
+ if (PD_TID (thread->ptid))
+ (*(int *) countp)++;
return 0;
}
-/* iterate_over_threads() callback for accumulating GDB thread pids. */
+/* 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)
{
- **(struct thread_info ***) bufp = thread;
- (*(struct thread_info ***) bufp)++;
+ if (PD_TID (thread->ptid))
+ {
+ **(struct thread_info ***) bufp = thread;
+ (*(struct thread_info ***) bufp)++;
+ }
return 0;
}
return;
/* Check application word size. */
- arch64 = register_size (current_gdbarch, 0) == 8;
+ 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)
+ 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))
+ if (!create_thread_event_breakpoint (target_gdbarch, pd_brk_addr))
return;
/* Prepare for thread debugging. */
- base_target = current_target;
push_target (&aix_thread_ops);
pd_able = 1;
/* Attach to process specified by ARGS. */
static void
-aix_thread_attach (char *args, int from_tty)
+aix_thread_attach (struct target_ops *ops, char *args, int from_tty)
{
- base_target.to_attach (args, from_tty);
+ struct target_ops *beneath = find_target_beneath (ops);
+
+ beneath->to_attach (beneath, args, from_tty);
pd_activate (1);
}
/* Detach from the process attached to by aix_thread_attach(). */
static void
-aix_thread_detach (char *args, int from_tty)
+aix_thread_detach (struct target_ops *ops, char *args, int from_tty)
{
+ struct target_ops *beneath = find_target_beneath (ops);
+
pd_disable ();
- base_target.to_detach (args, from_tty);
+ 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 (ptid_t ptid, int step, enum target_signal sig)
+aix_thread_resume (struct target_ops *ops,
+ ptid_t ptid, int step, enum target_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 (PIDGET (inferior_ptid));
- base_target.to_resume (ptid, step, sig);
+ beneath->to_resume (beneath, ptid, step, sig);
do_cleanups (cleanup);
}
else
{
- thread = find_thread_pid (ptid);
+ thread = find_thread_ptid (ptid);
if (!thread)
error (_("aix-thread resume: unknown pthread %ld"),
TIDGET (ptid));
if (arch64)
ptrace64aix (PTT_CONTINUE, tid[0], 1,
- target_signal_to_host (sig), (int *) tid);
+ target_signal_to_host (sig), (void *) tid);
else
ptrace32 (PTT_CONTINUE, tid[0], (int *) 1,
- target_signal_to_host (sig), (int *) tid);
+ target_signal_to_host (sig), (void *) tid);
}
}
thread. */
static ptid_t
-aix_thread_wait (ptid_t ptid, struct target_waitstatus *status)
+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 (PIDGET (inferior_ptid));
- ptid = base_target.to_wait (ptid, status);
+ ptid = beneath->to_wait (beneath, ptid, status, options);
do_cleanups (cleanup);
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)
- - gdbarch_decr_pc_after_break (current_gdbarch) == pd_brk_addr)
- return pd_activate (0);
+ if (!pd_active && status->kind == TARGET_WAITKIND_STOPPED
+ && status->value.sig == TARGET_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);
}
/* Predicate to test whether given register number is a "special" register. */
static int
-special_register_p (int regno)
+special_register_p (struct gdbarch *gdbarch, int regno)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- return regno == gdbarch_pc_regnum (current_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_fp0_regnum
&& regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
{
- if (!ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL))
+ if (!ptrace32 (PTT_READ_FPRS, tid, (void *) fprs, 0, NULL))
memset (fprs, 0, sizeof (fprs));
supply_fprs (regcache, fprs);
}
/* Special-purpose registers. */
- if (regno == -1 || special_register_p (regno))
+ if (regno == -1 || special_register_p (gdbarch, regno))
{
if (arch64)
{
thread/process specified by inferior_ptid. */
static void
-aix_thread_fetch_registers (struct regcache *regcache, int regno)
+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))
- base_target.to_fetch_registers (regcache, regno);
+ beneath->to_fetch_registers (beneath, regcache, regno);
else
{
- thread = find_thread_pid (inferior_ptid);
+ thread = find_thread_ptid (inferior_ptid);
tid = thread->private->tid;
if (tid == PTHDB_INVALID_TID)
&& regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
{
/* Pre-fetch: some regs may not be in the cache. */
- ptrace32 (PTT_READ_FPRS, tid, (int *) fprs, 0, NULL);
+ ptrace32 (PTT_READ_FPRS, tid, (void *) fprs, 0, NULL);
fill_fprs (regcache, fprs);
- ptrace32 (PTT_WRITE_FPRS, tid, (int *) fprs, 0, NULL);
+ ptrace32 (PTT_WRITE_FPRS, tid, (void *) fprs, 0, NULL);
}
/* Special-purpose registers. */
- if (regno == -1 || special_register_p (regno))
+ if (regno == -1 || special_register_p (gdbarch, regno))
{
if (arch64)
{
thread/process specified by inferior_ptid. */
static void
-aix_thread_store_registers (struct regcache *regcache, int regno)
+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))
- base_target.to_store_registers (regcache, regno);
+ beneath->to_store_registers (beneath, regcache, regno);
else
{
- thread = find_thread_pid (inferior_ptid);
+ thread = find_thread_ptid (inferior_ptid);
tid = thread->private->tid;
if (tid == PTHDB_INVALID_TID)
{
struct cleanup *old_chain = save_inferior_ptid ();
LONGEST xfer;
+ struct target_ops *beneath = find_target_beneath (ops);
inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
- xfer = base_target.to_xfer_partial (ops, object, annex,
- readbuf, writebuf, offset, len);
+ xfer = beneath->to_xfer_partial (beneath, object, annex,
+ readbuf, writebuf, offset, len);
do_cleanups (old_chain);
return xfer;
}
-/* Kill and forget about the inferior process. */
-
-static void
-aix_thread_kill (void)
-{
- struct cleanup *cleanup = save_inferior_ptid ();
-
- inferior_ptid = pid_to_ptid (PIDGET (inferior_ptid));
- base_target.to_kill ();
- do_cleanups (cleanup);
-}
-
/* Clean up after the inferior exits. */
static void
-aix_thread_mourn_inferior (void)
+aix_thread_mourn_inferior (struct target_ops *ops)
{
+ struct target_ops *beneath = find_target_beneath (ops);
+
pd_deactivate ();
- base_target.to_mourn_inferior ();
+ beneath->to_mourn_inferior (beneath);
}
/* Return whether thread PID is still valid. */
static int
-aix_thread_thread_alive (ptid_t ptid)
+aix_thread_thread_alive (struct target_ops *ops, ptid_t ptid)
{
+ struct target_ops *beneath = find_target_beneath (ops);
+
if (!PD_TID (ptid))
- return base_target.to_thread_alive (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. */
"info threads" output. */
static char *
-aix_thread_pid_to_str (ptid_t ptid)
+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 base_target.to_pid_to_str (ptid);
+ return beneath->to_pid_to_str (beneath, ptid);
/* Free previous return value; a new one will be allocated by
xstrprintf(). */
pthdb_suspendstate_t suspendstate;
pthdb_detachstate_t detachstate;
int cancelpend;
- long length;
static char *ret = NULL;
if (!PD_TID (thread->ptid))
xfree (ret); /* Free old buffer. */
- ret = ui_file_xstrdup (buf, &length);
+ ret = ui_file_xstrdup (buf, NULL);
ui_file_delete (buf);
return ret;
}
+static ptid_t
+aix_thread_get_ada_task_ptid (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_attach = aix_thread_attach;
- 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_shortname = "aix-threads";
+ aix_thread_ops.to_longname = _("AIX pthread support");
+ aix_thread_ops.to_doc = _("AIX pthread support");
+
+ aix_thread_ops.to_attach = aix_thread_attach;
+ 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;
/* No need for aix_thread_ops.to_create_inferior, because we activate thread
debugging when the inferior reaches pd_brk_addr. */
- aix_thread_ops.to_kill = aix_thread_kill;
- 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_stratum = thread_stratum;
- aix_thread_ops.to_magic = OPS_MAGIC;
+ 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
projects / deliverable / binutils-gdb.git / blobdiff