diff options
Diffstat (limited to 'sysdeps/arm/bits/ucontext.h')
-rw-r--r-- | sysdeps/arm/bits/ucontext.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/sysdeps/arm/bits/ucontext.h b/sysdeps/arm/bits/ucontext.h new file mode 100644 index 0000000000..236924384c --- /dev/null +++ b/sysdeps/arm/bits/ucontext.h @@ -0,0 +1,110 @@ +/* Copyright (C) 1998-2020 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 + <https://www.gnu.org/licenses/>. */ + +/* System V/ARM ABI compliant context switching support. */ + +#ifndef _BITS_UCONTEXT_H +#define _BITS_UCONTEXT_H 1 + +#include <features.h> + +#include <bits/types/sigset_t.h> +#include <bits/types/stack_t.h> + + +typedef int greg_t; + +/* Number of general registers. */ +#define __NGREG 16 +#ifdef __USE_MISC +# define NGREG __NGREG +#endif + +/* Container for all general registers. */ +typedef greg_t gregset_t[__NGREG]; + +#ifdef __USE_MISC +/* Number of each register is the `gregset_t' array. */ +enum +{ + R0 = 0, +# define R0 R0 + R1 = 1, +# define R1 R1 + R2 = 2, +# define R2 R2 + R3 = 3, +# define R3 R3 + R4 = 4, +# define R4 R4 + R5 = 5, +# define R5 R5 + R6 = 6, +# define R6 R6 + R7 = 7, +# define R7 R7 + R8 = 8, +# define R8 R8 + R9 = 9, +# define R9 R9 + R10 = 10, +# define R10 R10 + R11 = 11, +# define R11 R11 + R12 = 12, +# define R12 R12 + R13 = 13, +# define R13 R13 + R14 = 14, +# define R14 R14 + R15 = 15, +# define R15 R15 +}; +#endif + +#ifdef __USE_MISC +# define __ctx(fld) fld +#else +# define __ctx(fld) __ ## fld +#endif + +/* Structure to describe FPU registers. */ +typedef struct + { + } fpregset_t; + +/* Context to describe whole processor state. */ +typedef struct + { + gregset_t __ctx(gregs); + fpregset_t __ctx(fpregs); + } mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext_t + { + unsigned long int __ctx(uc_flags); + struct ucontext_t *uc_link; + sigset_t uc_sigmask; + stack_t uc_stack; + mcontext_t uc_mcontext; + long int __glibc_reserved1[5]; + } ucontext_t; + +#undef __ctx + +#endif /* bits/ucontext.h */ |