ucontext.h

Glibc 2.3.2源代码(解压后有100多M)

/* Copyright (C) 1997, 1998, 2000, 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.  */

/* Don't rely on this, the interface is currently messed up and may need to
   be broken to be fixed.  */
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H	1

#include <features.h>
#include <signal.h>

/* We need the signal context definitions even if they are not used
   included in <signal.h>.  */
#include <bits/sigcontext.h>


/* Type for general register.  */
typedef unsigned long int greg_t;

/* Number of general registers.  */
#define NGREG	80
#define NFPREG	32

/* Container for all general registers.  */
typedef struct gregset
  {
    greg_t g_regs[32];
    greg_t sr_regs[8];
    greg_t cr_regs[24];
    greg_t g_pad[16];
  } gregset_t;

/* Container for all FPU registers.  */
typedef struct fpregset
  {
    double fp_dregs[32];
  } fpregset_t;

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

/* Userlevel context.  */
typedef struct ucontext
  {
    unsigned long int uc_flags;
    struct ucontext *uc_link;
    stack_t uc_stack;
    mcontext_t uc_mcontext;
    __sigset_t uc_sigmask;
  } ucontext_t;

#endif /* sys/ucontext.h */