/* Copyright (C) 1997, 1998, 2000, 2003, 2004, 2006 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 <sgidefs.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. 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 == _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. 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 dsp; greg_t mdhi; greg_t mdlo; unsigned long hi1; unsigned long lo1; unsigned long hi2; unsigned long lo2; unsigned long hi3; unsigned long lo3; } mcontext_t; #else typedef struct { gregset_t gregs; fpregset_t fpregs; greg_t mdhi; greg_t hi1; greg_t hi2; greg_t hi3; greg_t mdlo; greg_t lo1; greg_t lo2; greg_t lo3; greg_t pc; unsigned int fpc_csr; unsigned int used_math; unsigned int dsp; unsigned int reserved; } 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 */