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110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
/* Copyright (C) 1997, 1998, 2000, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* Don't rely on this, the interface is currently messed up and may need to
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be broken to be fixed. */
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#ifndef _SYS_UCONTEXT_H
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#define _SYS_UCONTEXT_H 1
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#include <features.h>
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#include <signal.h>
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/* We need the signal context definitions even if they are not used
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included in <signal.h>. */
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#include <bits/sigcontext.h>
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/* Type for general register. Even in o32 we assume 64-bit registers,
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like the kernel. */
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__extension__ typedef unsigned long long int greg_t;
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/* Number of general registers. */
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#define NGREG 32
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#define NFPREG 32
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/* Container for all general registers. */
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typedef greg_t gregset_t[NGREG];
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/* Container for all FPU registers. */
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typedef struct fpregset {
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union {
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double fp_dregs[NFPREG];
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struct {
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float _fp_fregs;
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unsigned int _fp_pad;
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} fp_fregs[NFPREG];
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} fp_r;
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} fpregset_t;
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/* Context to describe whole processor state. */
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#if _MIPS_SIM == _MIPS_SIM_ABI32
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/* Earlier versions of glibc for mips had an entirely different
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definition of mcontext_t, that didn't even resemble the
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corresponding kernel data structure. Since all legitimate uses of
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ucontext_t in glibc mustn't have accessed anything beyond
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uc_mcontext and, even then, taking a pointer to it, casting it to
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sigcontext_t, and accessing it as such, which is what it has always
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been, this can still be rectified. Fortunately, makecontext,
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[gs]etcontext et all have never been implemented. */
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typedef struct
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{
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unsigned int regmask;
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unsigned int status;
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greg_t pc;
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gregset_t gregs;
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fpregset_t fpregs;
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unsigned int fp_owned;
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unsigned int fpc_csr;
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unsigned int fpc_eir;
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unsigned int used_math;
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unsigned int ssflags;
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greg_t mdhi;
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greg_t mdlo;
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unsigned int cause;
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unsigned int badvaddr;
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} mcontext_t;
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#else
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typedef struct
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{
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gregset_t gregs;
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fpregset_t fpregs;
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greg_t mdhi;
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greg_t mdlo;
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greg_t pc;
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unsigned int status;
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unsigned int fpc_csr;
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unsigned int fpc_eir;
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unsigned int used_math;
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unsigned int cause;
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unsigned int badvaddr;
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} mcontext_t;
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#endif
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/* Userlevel context. */
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typedef struct ucontext
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{
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unsigned long int uc_flags;
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struct ucontext *uc_link;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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__sigset_t uc_sigmask;
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} ucontext_t;
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#endif /* sys/ucontext.h */
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