| /* Copyright (C) 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 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/m68k ABI compliant 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 18 |
| |
| /* Container for all general registers. */ |
| typedef greg_t gregset_t[NGREG]; |
| |
| /* Number of each register is the `gregset_t' array. */ |
| enum |
| { |
| R_D0 = 0, |
| #define R_D0 R_D0 |
| R_D1 = 1, |
| #define R_D1 R_D1 |
| R_D2 = 2, |
| #define R_D2 R_D2 |
| R_D3 = 3, |
| #define R_D3 R_D3 |
| R_D4 = 4, |
| #define R_D4 R_D4 |
| R_D5 = 5, |
| #define R_D5 R_D5 |
| R_D6 = 6, |
| #define R_D6 R_D6 |
| R_D7 = 7, |
| #define R_D7 R_D7 |
| R_A0 = 8, |
| #define R_A0 R_A0 |
| R_A1 = 9, |
| #define R_A1 R_A1 |
| R_A2 = 10, |
| #define R_A2 R_A2 |
| R_A3 = 11, |
| #define R_A3 R_A3 |
| R_A4 = 12, |
| #define R_A4 R_A4 |
| R_A5 = 13, |
| #define R_A5 R_A5 |
| R_A6 = 14, |
| #define R_A6 R_A6 |
| R_A7 = 15, |
| #define R_A7 R_A7 |
| R_SP = 15, |
| #define R_SP R_SP |
| R_PC = 16, |
| #define R_PC R_PC |
| R_PS = 17 |
| #define R_PS R_PS |
| }; |
| |
| /* Structure to describe FPU registers. */ |
| typedef struct fpregset |
| { |
| int f_pcr; |
| int f_psr; |
| int f_fpiaddr; |
| int f_fpregs[8][3]; |
| } fpregset_t; |
| |
| /* Context to describe whole processor state. */ |
| typedef struct |
| { |
| int version; |
| gregset_t gregs; |
| } mcontext_t; |
| |
| #define MCONTEXT_VERSION 1 |
| |
| /* 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[201]; |
| } ucontext_t; |
| |
| #endif /* sys/ucontext.h */ |
