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109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
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/* Copyright (C) 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* System V/m68k ABI compliant context switching support. */
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#ifndef _SYS_UCONTEXT_H
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#define _SYS_UCONTEXT_H 1
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#include <features.h>
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#include <signal.h>
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/* Type for general register. */
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typedef int greg_t;
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/* Number of general registers. */
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#define NGREG 18
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/* Container for all general registers. */
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typedef greg_t gregset_t[NGREG];
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/* Number of each register is the `gregset_t' array. */
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enum
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{
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R_D0 = 0,
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#define R_D0 R_D0
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R_D1 = 1,
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#define R_D1 R_D1
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R_D2 = 2,
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#define R_D2 R_D2
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R_D3 = 3,
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#define R_D3 R_D3
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R_D4 = 4,
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#define R_D4 R_D4
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R_D5 = 5,
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#define R_D5 R_D5
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R_D6 = 6,
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#define R_D6 R_D6
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R_D7 = 7,
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#define R_D7 R_D7
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R_A0 = 8,
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#define R_A0 R_A0
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R_A1 = 9,
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#define R_A1 R_A1
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R_A2 = 10,
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#define R_A2 R_A2
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R_A3 = 11,
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#define R_A3 R_A3
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R_A4 = 12,
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#define R_A4 R_A4
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R_A5 = 13,
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#define R_A5 R_A5
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R_A6 = 14,
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#define R_A6 R_A6
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R_A7 = 15,
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#define R_A7 R_A7
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R_SP = 15,
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#define R_SP R_SP
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R_PC = 16,
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#define R_PC R_PC
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R_PS = 17
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#define R_PS R_PS
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};
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/* Structure to describe FPU registers. */
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typedef struct fpregset
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{
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int f_pcr;
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int f_psr;
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int f_fpiaddr;
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int f_fpregs[8][3];
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} fpregset_t;
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/* Context to describe whole processor state. */
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typedef struct
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{
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int version;
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gregset_t gregs;
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} mcontext_t;
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#define MCONTEXT_VERSION 1
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/* Userlevel context. */
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typedef struct ucontext
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{
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unsigned long int uc_flags;
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struct ucontext *uc_links;
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__sigset_t uc_sigmask;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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long int uc_filler[201];
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} ucontext_t;
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#endif /* sys/ucontext.h */
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