| /* 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 */ |
