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/* Copyright 1997, 1999, 2000, 2002 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 */
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