| /* 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 */ |
