Document new tristate __libc_missing_32bit_uids.

[kopensolaris-gnu/glibc.git] / sysdeps / mach / thread_state.h

diff --git a/sysdeps/mach/thread_state.h b/sysdeps/mach/thread_state.h
index 76e5784..34904aa 100644 (file)
--- a/sysdeps/mach/thread_state.h
+++ b/sysdeps/mach/thread_state.h
@@ -1,32 +1,52 @@
 /* Generic definitions for dealing with Mach thread states.
-Copyright (C) 1994 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+   Copyright (C) 1994, 1996 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
 
 /* Everything else is called `thread_state', but CMU's header file is
    called `thread_status'.  Oh boy.  */
 #include <mach/thread_status.h>
 
+/* The machine-dependent thread_state.h file can either define these
+   macros, or just define PC and SP to the register names.  */
+
+#ifndef MACHINE_THREAD_STATE_SET_PC
+#define MACHINE_THREAD_STATE_SET_PC(ts, pc) \
+  ((ts)->PC = (unsigned long int) (pc))
+#endif
+#ifndef MACHINE_THREAD_STATE_SET_SP
+#ifdef STACK_GROWTH_UP
+#define MACHINE_THREAD_STATE_SET_SP(ts, stack, size) \
+  ((ts)->SP = (unsigned long int) (stack))
+#else
+#define MACHINE_THREAD_STATE_SET_SP(ts, stack, size) \
+  ((ts)->SP = (unsigned long int) (stack) + (size))
+#endif
+#endif
+
 /* These functions are of use in machine-dependent signal trampoline
    implementations.  */
 
+#include <string.h>            /* size_t, memcpy */
+#include <mach/mach_interface.h> /* __thread_get_state */
+
 static inline int
-machine_get_state (struct machine_thread_all_state *state,
+machine_get_state (thread_t thread, struct machine_thread_all_state *state,
                   int flavor, void *stateptr, void *scpptr, size_t size)
 {
   if (state->set & (1 << flavor))
@@ -37,18 +57,31 @@ machine_get_state (struct machine_thread_all_state *state,
     }
   else
     {
-      /* Noone asked about this flavor of state before; fetch the state
+      /* No one asked about this flavor of state before; fetch the state
         directly from the kernel into the sigcontext.  */
-      unsigned int got;
-      return (! __thread_get_state (ss->thread, flavor, scpptr, &got)
+      mach_msg_type_number_t got = (size / sizeof (int));
+      return (! __thread_get_state (thread, flavor, scpptr, &got)
              && got == (size / sizeof (int)));
     }
 }
 
 static inline int
-machine_get_basic_state (void)
+machine_get_basic_state (thread_t thread,
+                        struct machine_thread_all_state *state)
 {
-  return machine_get_state (MACHINE_THREAD_STATE_FLAVOR, &state->basic,
-                           &scp->sc_##machine_thread_state,
-                           sizeof (state->basic));
+  mach_msg_type_number_t count;
+
+  if (state->set & (1 << MACHINE_THREAD_STATE_FLAVOR))
+    return 1;
+
+  count = MACHINE_THREAD_STATE_COUNT;
+  if (__thread_get_state (thread, MACHINE_THREAD_STATE_FLAVOR,
+                         (natural_t *) &state->basic,
+                         &count) != KERN_SUCCESS ||
+      count != MACHINE_THREAD_STATE_COUNT)
+    /* What kind of thread?? */
+    return 0;                  /* XXX */
+
+  state->set |= 1 << MACHINE_THREAD_STATE_FLAVOR;
+  return 1;
 }