| /* Copyright (C) 1998-2014 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/ARM ABI compliant context switching support. */ |
| |
| #ifndef _SYS_UCONTEXT_H |
| #define _SYS_UCONTEXT_H 1 |
| |
| #include <features.h> |
| #include <signal.h> |
| |
| typedef int greg_t; |
| |
| /* Number of general registers. */ |
| #define NGREG 16 |
| |
| /* Container for all general registers. */ |
| typedef greg_t gregset_t[NGREG]; |
| |
| /* 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 |
| }; |
| |
| /* Structure to describe FPU registers. */ |
| typedef struct fpregset |
| { |
| } fpregset_t; |
| |
| /* Context to describe whole processor state. */ |
| typedef struct |
| { |
| gregset_t gregs; |
| fpregset_t fpregs; |
| } mcontext_t; |
| |
| /* Userlevel context. */ |
| typedef struct ucontext |
| { |
| unsigned long int uc_flags; |
| struct ucontext *uc_link; |
| __sigset_t uc_sigmask; |
| stack_t uc_stack; |
| mcontext_t uc_mcontext; |
| long int uc_filler[5]; |
| } ucontext_t; |
| |
| #endif /* sys/ucontext.h */ |
