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/* Copyright (C) 1997-2018 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, see
<http://www.gnu.org/licenses/>. */
/* 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 <bits/types/sigset_t.h>
#include <bits/types/stack_t.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
#ifdef __USE_MISC
# define NGREG __NGREG
# define NFPREG __NFPREG
#endif
/* Container for all general registers. */
typedef greg_t gregset_t[__NGREG];
#ifdef __USE_MISC
# define __ctx(fld) fld
#else
# define __ctx(fld) __ ## fld
#endif
/* Container for all FPU registers. */
typedef struct {
union {
double __ctx(fp_dregs)[__NFPREG];
struct {
float _fp_fregs;
unsigned int _fp_pad;
} __ctx(fp_fregs)[__NFPREG];
} __ctx(fp_r);
} fpregset_t;
/* Context to describe whole processor state. */
#if _MIPS_SIM == _ABIO32
/* Earlier versions of glibc for mips had an entirely different
definition of mcontext_t, that didn't even resemble the
corresponding kernel data structure. Fortunately, makecontext,
[gs]etcontext et all were not implemented back then, so this can
still be rectified. */
typedef struct
{
unsigned int __ctx(regmask);
unsigned int __ctx(status);
greg_t __ctx(pc);
gregset_t __ctx(gregs);
fpregset_t __ctx(fpregs);
unsigned int __ctx(fp_owned);
unsigned int __ctx(fpc_csr);
unsigned int __ctx(fpc_eir);
unsigned int __ctx(used_math);
unsigned int __ctx(dsp);
greg_t __ctx(mdhi);
greg_t __ctx(mdlo);
unsigned long __ctx(hi1);
unsigned long __ctx(lo1);
unsigned long __ctx(hi2);
unsigned long __ctx(lo2);
unsigned long __ctx(hi3);
unsigned long __ctx(lo3);
} mcontext_t;
#else
typedef struct
{
gregset_t __ctx(gregs);
fpregset_t __ctx(fpregs);
greg_t __ctx(mdhi);
greg_t __ctx(hi1);
greg_t __ctx(hi2);
greg_t __ctx(hi3);
greg_t __ctx(mdlo);
greg_t __ctx(lo1);
greg_t __ctx(lo2);
greg_t __ctx(lo3);
greg_t __ctx(pc);
unsigned int __ctx(fpc_csr);
unsigned int __ctx(used_math);
unsigned int __ctx(dsp);
unsigned int __glibc_reserved1;
} mcontext_t;
#endif
/* Userlevel context. */
typedef struct ucontext_t
{
unsigned long int __ctx(uc_flags);
struct ucontext_t *uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext;
sigset_t uc_sigmask;
} ucontext_t;
#undef __ctx
#endif /* sys/ucontext.h */
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