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

   1 /* Copyright (C) 1997, 1998, 2000, 2003 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    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 #if defined _ABIN32 && _MIPS_SIM == _ABIN32
  34 __extension__ typedef unsigned long long int greg_t;
  35 #else
  36 typedef unsigned long int greg_t;
  37 #endif
  38
  39 /* Number of general registers.  */
  40 #define NGREG   37
  41 #define NFPREG  33
  42
  43 /* Container for all general registers.  */
  44 /* gregset_t must be an array.  The below declared array corresponds to:
  45 typedef struct gregset {
  46         greg_t  g_regs[32];
  47         greg_t  g_hi;
  48         greg_t  g_lo;
  49         greg_t  g_pad[3];
  50 } gregset_t;  */
  51 typedef greg_t gregset_t[NGREG];
  52
  53 /* Container for all FPU registers.  */
  54 typedef struct fpregset {
  55         union {
  56                 double  fp_dregs[32];
  57                 struct {
  58                         float           _fp_fregs;
  59                         unsigned int    _fp_pad;
  60                 } fp_fregs[32];
  61         } fp_r;
  62         unsigned int    fp_csr;
  63         unsigned int    fp_pad;
  64 } fpregset_t;
  65
  66
  67 /* Context to describe whole processor state.  */
  68 typedef struct
  69   {
  70     gregset_t gregs;
  71     fpregset_t fpregs;
  72   } mcontext_t;
  73
  74 /* Userlevel context.  */
  75 typedef struct ucontext
  76   {
  77 #if defined _ABIN32 && _MIPS_SIM == _ABIN32
  78     __extension__ unsigned long long int uc_flags;
  79 #else
  80     unsigned long int uc_flags;
  81 #endif
  82     struct ucontext *uc_link;
  83     stack_t uc_stack;
  84     mcontext_t uc_mcontext;
  85     __sigset_t uc_sigmask;
  86   } ucontext_t;
  87
  88 #endif /* sys/ucontext.h */