| /* Copyright (C) 2000-2018 Free Software Foundation, Inc. |
| Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com). |
| 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/>. */ |
| |
| #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 |
| |
| /* Type for a program status word. */ |
| typedef struct |
| { |
| unsigned long __ctx(mask); |
| unsigned long __ctx(addr); |
| } __attribute__ ((__aligned__(8))) __psw_t; |
| |
| /* Type for a general-purpose register. */ |
| typedef unsigned long greg_t; |
| |
| /* And the whole bunch of them. We should have used `struct s390_regs', |
| but to avoid name space pollution and since the tradition says that |
| the register set is an array, we make gregset_t a simple array |
| that has the same size as s390_regs. This is needed for the |
| elf_prstatus structure. */ |
| #if __WORDSIZE == 64 |
| # define __NGREG 27 |
| #else |
| # define __NGREG 36 |
| #endif |
| #ifdef __USE_MISC |
| # define NGREG __NGREG |
| #endif |
| /* Must match kernels psw_t alignment. */ |
| typedef greg_t gregset_t[__NGREG] __attribute__ ((__aligned__(8))); |
| |
| typedef union |
| { |
| double __ctx(d); |
| float __ctx(f); |
| } fpreg_t; |
| |
| /* Register set for the floating-point registers. */ |
| typedef struct |
| { |
| unsigned int __ctx(fpc); |
| fpreg_t __ctx(fprs)[16]; |
| } fpregset_t; |
| |
| /* Context to describe whole processor state. */ |
| typedef struct |
| { |
| __psw_t __ctx(psw); |
| unsigned long __ctx(gregs)[16]; |
| unsigned int __ctx(aregs)[16]; |
| fpregset_t __ctx(fpregs); |
| } mcontext_t; |
| |
| /* 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 */ |