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/* Copyright (C) 1997, 1998, 2000, 2003, 2004 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>
#include <sgidefs.h>
/* Type for general register. Even in o32 we assume 64-bit registers,
like the kernel. */
__extension__ typedef unsigned long long int greg_t;
/* Number of general registers. */
#define NGREG 32
#define NFPREG 32
/* Container for all general registers. */
typedef greg_t gregset_t[NGREG];
/* Container for all FPU registers. */
typedef struct fpregset {
union {
double fp_dregs[NFPREG];
struct {
float _fp_fregs;
unsigned int _fp_pad;
} fp_fregs[NFPREG];
} fp_r;
} fpregset_t;
/* Context to describe whole processor state. */
#if _MIPS_SIM == _MIPS_SIM_ABI32
/* Earlier versions of glibc for mips had an entirely different
definition of mcontext_t, that didn't even resemble the
corresponding kernel data structure. Since all legitimate uses of
ucontext_t in glibc mustn't have accessed anything beyond
uc_mcontext and, even then, taking a pointer to it, casting it to
sigcontext_t, and accessing it as such, which is what it has always
been, this can still be rectified. Fortunately, makecontext,
[gs]etcontext et all have never been implemented. */
typedef struct
{
unsigned int regmask;
unsigned int status;
greg_t pc;
gregset_t gregs;
fpregset_t fpregs;
unsigned int fp_owned;
unsigned int fpc_csr;
unsigned int fpc_eir;
unsigned int used_math;
unsigned int ssflags;
greg_t mdhi;
greg_t mdlo;
unsigned int cause;
unsigned int badvaddr;
} mcontext_t;
#else
typedef struct
{
gregset_t gregs;
fpregset_t fpregs;
greg_t mdhi;
greg_t mdlo;
greg_t pc;
unsigned int status;
unsigned int fpc_csr;
unsigned int fpc_eir;
unsigned int used_math;
unsigned int cause;
unsigned int badvaddr;
} mcontext_t;
#endif
/* 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 */
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