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/* Copyright (C) 1998, 1999, 2002 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. */
#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>
#if __WORDSIZE == 32
/* Number of general registers. */
#define NGREG 48
/* Container for all general registers. */
typedef unsigned long gregset_t[NGREG];
/* Container for floating-point registers and status */
typedef struct _libc_fpstate
{
double fpregs[32];
double fpscr;
unsigned int _pad[2];
} fpregset_t;
/* Container for Altivec/VMX registers and status.
Needs to be aligned on a 16-byte boundary. */
typedef struct _libc_vrstate
{
unsigned int vrregs[32][4];
unsigned int vscr;
unsigned int vrsave;
unsigned int _pad[2];
} vrregset_t;
/* Context to describe whole processor state. */
typedef struct
{
gregset_t gregs;
fpregset_t fpregs;
vrregset_t vrregs __attribute__((__aligned__(16)));
} mcontext_t;
#else
/* For 64-bit, a machine context is exactly a sigcontext. */
typedef struct sigcontext mcontext_t;
#endif
/* Userlevel context. */
typedef struct ucontext
{
unsigned long int uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
#if __WORDSIZE == 32
/* These fields are for backwards compatibility. */
int uc_pad[7];
mcontext_t *uc_regs;
unsigned int uc_oldsigmask[2];
int uc_pad2;
#endif
sigset_t uc_sigmask;
mcontext_t uc_mcontext; /* last for extensibility */
} ucontext_t;
#endif /* sys/ucontext.h */
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