/* Copyright (C) 1997, 1999, 2001 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ /* 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_fpregs[8][3]; int f_pcr; int f_psr; int f_fpiaddr; } fpregset_t; /* Context to describe whole processor state. */ typedef struct { int version; gregset_t gregs; fpregset_t fpregs; } mcontext_t; #define MCONTEXT_VERSION 2 /* 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[174]; } ucontext_t; #endif /* sys/ucontext.h */