1 /* ucontext_t definition, Nios II version. 2 Copyright (C) 2015-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 /* System V/Nios II ABI compliant context switching support. */ 20 21 #ifndef _SYS_UCONTEXT_H 22 #define _SYS_UCONTEXT_H 1 23 24 #include <features.h> 25 26 #include <bits/types/sigset_t.h> 27 #include <bits/types/stack_t.h> 28 29 30 /* These definitions must be in sync with the kernel. */ 31 32 #ifdef __USE_MISC 33 # define MCONTEXT_VERSION 2 34 #endif 35 36 #ifdef __USE_MISC 37 # define __ctx(fld) fld 38 #else 39 # define __ctx(fld) __ ## fld 40 #endif 41 42 /* Context to describe whole processor state. */ 43 typedef struct 44 { 45 int __ctx(version); 46 unsigned long __ctx(regs)[32]; 47 } mcontext_t; 48 49 /* Userlevel context. */ 50 typedef struct ucontext_t 51 { 52 unsigned long __ctx(uc_flags); 53 struct ucontext_t *uc_link; 54 stack_t uc_stack; 55 mcontext_t uc_mcontext; 56 sigset_t uc_sigmask; 57 } ucontext_t; 58 59 #undef __ctx 60 61 #endif /* sys/ucontext.h */ 62