sysdeps/unix/sysv/linux/tile/ucontext_i.h

   1 /* Copyright (C) 2011-2015 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
   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 /* Definitions of offsets within the ucontext_t structure.  Note
  20    that for convenience we use __SIZEOF_POINTER__ for "long" and
  21    "ssize_t" fields (and their unsigned counterparts) as well.  */
  22
  23 #define UC_FLAGS_OFFSET 0
  24 #define UC_LINK_OFFSET (UC_FLAGS_OFFSET + __SIZEOF_POINTER__)
  25 #define UC_STACK_SP_OFFSET (UC_LINK_OFFSET + __SIZEOF_POINTER__)
  26 #define UC_STACK_FLAGS_OFFSET (UC_STACK_SP_OFFSET + __SIZEOF_POINTER__)
  27 #define UC_STACK_SIZE_OFFSET (UC_STACK_FLAGS_OFFSET + __SIZEOF_POINTER__)
  28 #define UC_STACK_MCONTEXT_OFFSET \
  29   ((UC_STACK_SIZE_OFFSET + __SIZEOF_POINTER__ + REGSIZE - 1) & -REGSIZE)
  30 #define UC_REG(i) (UC_STACK_MCONTEXT_OFFSET + ((i) * REGSIZE))
  31 #define UC_NREGS 64
  32 #define UC_SIGMASK_OFFSET UC_REG(UC_NREGS)
  33 #define UC_SIZE (UC_SIGMASK_OFFSET + (_NSIG / 8))
  34
  35 /* From <asm/siginfo.h> */
  36 #define SI_MAX_SIZE     128
  37
  38 /* From <asm/signal.h> */
  39 #define _NSIG           64
  40 #define SIG_BLOCK          0    /* for blocking signals */
  41 #define SIG_UNBLOCK        1    /* for unblocking signals */
  42 #define SIG_SETMASK        2    /* for setting the signal mask */