| /* Copyright 1997-2014 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 Library General Public License as |
| published by the Free Software Foundation; either version 2 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 |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* AM33/2.0 context switching support. */ |
| |
| #ifndef _SYS_UCONTEXT_H |
| #define _SYS_UCONTEXT_H 1 |
| |
| #include <features.h> |
| #include <signal.h> |
| |
| /* Type for general register. */ |
| typedef int greg_t; |
| |
| /* Number of general registers. */ |
| #define NGREG 28 |
| |
| /* Container for all general registers. */ |
| typedef greg_t gregset_t[NGREG]; |
| |
| /* Number of each register is the `gregset_t' array. */ |
| enum |
| { |
| REG_D0 = 0, |
| #define REG_D0 REG_D0 |
| REG_D1, |
| #define REG_D1 REG_D1 |
| REG_D2, |
| #define REG_D2 REG_D2 |
| REG_D3, |
| #define REG_D3 REG_D3 |
| REG_A0, |
| #define REG_A0 REG_A0 |
| REG_A1, |
| #define REG_A1 REG_A1 |
| REG_A2, |
| #define REG_A2 REG_A2 |
| REG_A3, |
| #define REG_A3 REG_A3 |
| REG_E0, |
| #define REG_E0 REG_E0 |
| REG_E1, |
| #define REG_E1 REG_E1 |
| REG_E2, |
| #define REG_E2 REG_E2 |
| REG_E3, |
| #define REG_E3 REG_E3 |
| REG_E4, |
| #define REG_E4 REG_E4 |
| REG_E5, |
| #define REG_E5 REG_E5 |
| REG_E6, |
| #define REG_E6 REG_E6 |
| REG_E7, |
| #define REG_E7 REG_E7 |
| REG_LAR, |
| #define REG_LAR REG_LAR |
| REG_LIR, |
| #define REG_LIR REG_LIR |
| REG_MDR, |
| #define REG_MDR REG_MDR |
| REG_MCVF, |
| #define REG_MCVF REG_MCVF |
| REG_MCRL, |
| #define REG_MCRL REG_MCRL |
| REG_MCRH, |
| #define REG_MCRH REG_MCRH |
| REG_MDRQ, |
| #define REG_MDRQ REG_MDRQ |
| REG_SP, |
| #define REG_SP REG_SP |
| REG_EPSW, |
| #define REG_EPSW REG_EPSW |
| REG_PC, |
| #define REG_PC REG_PC |
| }; |
| |
| typedef int freg_t; |
| |
| /* Structure to describe FPU registers. */ |
| typedef struct { |
| union { |
| double fp_dregs[16]; |
| float fp_fregs[32]; |
| freg_t fp_regs[32]; |
| } regs; |
| freg_t fpcr; |
| } 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 */ |
