| /* Copyright (C) 2000, 2001, 2002 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, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #ifndef _SYS_UCONTEXT_H |
| #define _SYS_UCONTEXT_H 1 |
| /* Forward definition to avoid parse errors */ |
| struct ucontext; |
| typedef struct ucontext ucontext_t; |
| #include <features.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 a program status word. */ |
| typedef struct |
| { |
| unsigned long mask; |
| unsigned long 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 |
| /* Must match kernels psw_t alignment. */ |
| typedef greg_t gregset_t[NGREG] __attribute__ ((aligned(8))); |
| |
| typedef union |
| { |
| double d; |
| float f; |
| } fpreg_t; |
| |
| /* Register set for the floating-point registers. */ |
| typedef struct |
| { |
| unsigned int fpc; |
| fpreg_t fprs[16]; |
| } fpregset_t; |
| |
| /* Context to describe whole processor state. */ |
| typedef struct |
| { |
| __psw_t psw; |
| unsigned long gregs[16]; |
| unsigned int aregs[16]; |
| fpregset_t fpregs; |
| } mcontext_t; |
| |
| /* Userlevel context. */ |
| struct ucontext |
| { |
| unsigned long int uc_flags; |
| struct ucontext *uc_link; |
| stack_t uc_stack; |
| mcontext_t uc_mcontext; |
| __sigset_t uc_sigmask; |
| }; |
| |
| |
| #endif /* sys/ucontext.h */ |