uclibc-ng/libc/sysdeps/linux/avr32/sys/ucontext.h

/* Copyright (C) 1998, 1999, 2001 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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

/* Linux/AVR32 ABI compliant context switching support.  */

#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H        1

#include <features.h>
#include <signal.h>
#include <sys/procfs.h>
#include <bits/sigcontext.h>

typedef int greg_t;

/* Number of general registers.  */
#define NGREG  16

/* Container for all general registers.  */
typedef elf_gregset_t gregset_t;

/* Number of each register is the `gregset_t' array.  */
enum
{
  R0 = 0,
#define R0     R0
  R1 = 1,
#define R1     R1
  R2 = 2,
#define R2     R2
  R3 = 3,
#define R3     R3
  R4 = 4,
#define R4     R4
  R5 = 5,
#define R5     R5
  R6 = 6,
#define R6     R6
  R7 = 7,
#define R7     R7
  R8 = 8,
#define R8     R8
  R9 = 9,
#define R9     R9
  R10 = 10,
#define R10    R10
  R11 = 11,
#define R11    R11
  R12 = 12,
#define R12    R12
  R13 = 13,
#define R13    R13
  R14 = 14,
#define R14    R14
  R15 = 15
#define R15    R15
};

/* Structure to describe FPU registers.  */
typedef elf_fpregset_t fpregset_t;

/* Context to describe whole processor state.  */
typedef struct sigcontext mcontext_t;

/* Userlevel context.  */
typedef struct ucontext
{
       unsigned long   uc_flags;
       struct ucontext *uc_link;
       stack_t         uc_stack;
       mcontext_t      uc_mcontext;
       sigset_t        uc_sigmask;   /* mask last for extensibility */
} ucontext_t;

#endif /* sys/ucontext.h */