diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/sys/ucontext.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/sys/ucontext.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/sys/ucontext.h b/sysdeps/unix/sysv/linux/s390/sys/ucontext.h new file mode 100644 index 0000000000..f04bf849d5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/s390/sys/ucontext.h @@ -0,0 +1,100 @@ +/* Copyright (C) 2000-2014 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 +/* 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; + +/* Bit is set if the uc_high_gprs field contains the upper halfs of + the 64 bit general purpose registers. Since the uc_high_gprs field + is only available in the 32 bit version of ucontext_t it will never + be set for 64 bit. */ +#define UCONTEXT_UC_FLAGS_HIGH_GPRS (1UL << 0) + +/* A new uc_flags constant will be defined when actually making use of + the reserved space: UCONTEXT_UCFLAGS_RESERVED (1UL << 1). */ + +/* 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; +#ifndef __s390x__ + unsigned long uc_high_gprs[16]; +#endif + char __reserved[512]; + }; + + +#endif /* sys/ucontext.h */ |