| /* Copyright (C) 1998-2018 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/>. */ |
| |
| /* System V/AArch64 ABI compliant context switching support. */ |
| |
| #ifndef _SYS_UCONTEXT_H |
| #define _SYS_UCONTEXT_H 1 |
| |
| #include <features.h> |
| |
| #include <bits/types/sigset_t.h> |
| #include <bits/types/stack_t.h> |
| |
| #ifdef __USE_MISC |
| # define __ctx(fld) fld |
| #else |
| # define __ctx(fld) __ ## fld |
| #endif |
| |
| #ifdef __USE_MISC |
| # include <sys/procfs.h> |
| |
| |
| typedef elf_greg_t greg_t; |
| |
| /* Container for all general registers. */ |
| typedef elf_gregset_t gregset_t; |
| |
| /* Structure to describe FPU registers. */ |
| typedef elf_fpregset_t fpregset_t; |
| #endif |
| |
| /* Context to describe whole processor state. This only describes |
| the core registers; coprocessor registers get saved elsewhere |
| (e.g. in uc_regspace, or somewhere unspecified on the stack |
| during non-RT signal handlers). */ |
| typedef struct |
| { |
| unsigned long long int __ctx(fault_address); |
| unsigned long long int __ctx(regs)[31]; |
| unsigned long long int __ctx(sp); |
| unsigned long long int __ctx(pc); |
| unsigned long long int __ctx(pstate); |
| /* This field contains extension records for additional processor |
| state such as the FP/SIMD state. It has to match the definition |
| of the corresponding field in the sigcontext struct, see the |
| arch/arm64/include/uapi/asm/sigcontext.h linux header for details. */ |
| unsigned char __reserved[4096] __attribute__ ((__aligned__ (16))); |
| } mcontext_t; |
| |
| /* Userlevel context. */ |
| typedef struct ucontext_t |
| { |
| unsigned long __ctx(uc_flags); |
| struct ucontext_t *uc_link; |
| stack_t uc_stack; |
| sigset_t uc_sigmask; |
| mcontext_t uc_mcontext; |
| } ucontext_t; |
| |
| #undef __ctx |
| |
| #endif /* sys/ucontext.h */ |
