sysdeps/unix/sysv/linux/powerpc/bits/sigstack.h

   1 /* sigstack, sigaltstack definitions.
   2    Copyright (C) 1998-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SIGNAL_H
  20 # error "Never include this file directly.  Use <signal.h> instead"
  21 #endif
  22
  23
  24 /* Structure describing a signal stack (obsolete).  */
  25 struct sigstack
  26   {
  27     void *ss_sp;                /* Signal stack pointer.  */
  28     int ss_onstack;             /* Nonzero if executing on this stack.  */
  29   };
  30
  31
  32 /* Possible values for `ss_flags.'.  */
  33 enum
  34 {
  35   SS_ONSTACK = 1,
  36 #define SS_ONSTACK      SS_ONSTACK
  37   SS_DISABLE
  38 #define SS_DISABLE      SS_DISABLE
  39 };
  40
  41 /* Minimum stack size for a signal handler.  */
  42 #define MINSIGSTKSZ     4096
  43
  44 /* System default stack size.  */
  45 #define SIGSTKSZ        16384
  46
  47
  48 /* Alternate, preferred interface.  */
  49 typedef struct sigaltstack
  50   {
  51     void *ss_sp;
  52     int ss_flags;
  53     size_t ss_size;
  54   } stack_t;