sysdeps/unix/sysv/linux/mips/sys/ucontext.h

   1 /* Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 /* Don't rely on this, the interface is currently messed up and may need to
  20    be broken to be fixed.  */
  21 #ifndef _SYS_UCONTEXT_H
  22 #define _SYS_UCONTEXT_H 1
  23
  24 #include <features.h>
  25 #include <signal.h>
  26
  27 /* We need the signal context definitions even if they are not used
  28    included in <signal.h>.  */
  29 #include <bits/sigcontext.h>
  30
  31
  32 /* Type for general register.  */
  33 typedef unsigned long int greg_t;
  34
  35 /* Number of general registers.  */
  36 #define NGREG   37
  37 #define NFPREG  33
  38
  39 /* Container for all general registers.  */
  40 /* gregset_t must be an array.  The below declared array corresponds to:
  41 typedef struct gregset {
  42         greg_t  g_regs[32];
  43         greg_t  g_hi;
  44         greg_t  g_lo;
  45         greg_t  g_pad[3];
  46 } gregset_t;  */
  47 typedef greg_t gregset_t[NGREG];
  48
  49 /* Container for all FPU registers.  */
  50 typedef struct fpregset {
  51         union {
  52                 double  fp_dregs[32];
  53                 struct {
  54                         float           _fp_fregs;
  55                         unsigned int    _fp_pad;
  56                 } fp_fregs[32];
  57         } fp_r;
  58         unsigned int    fp_csr;
  59         unsigned int    fp_pad;
  60 } fpregset_t;
  61
  62
  63 /* Context to describe whole processor state.  */
  64 typedef struct
  65   {
  66     gregset_t gregs;
  67     fpregset_t fpregs;
  68   } mcontext_t;
  69
  70 /* Userlevel context.  */
  71 typedef struct ucontext
  72   {
  73     unsigned long int uc_flags;
  74     struct ucontext *uc_link;
  75     stack_t uc_stack;
  76     mcontext_t uc_mcontext;
  77     __sigset_t uc_sigmask;
  78   } ucontext_t;
  79
  80 #endif /* sys/ucontext.h */