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/* 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/blackfin 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 47
/* Container for all general registers. */
typedef greg_t gregset_t[NGREG];
/* Number of each register is the `gregset_t' array. */
enum
{
R0 = 0,
#define R0 R0
R1 = 1,
#define R1 R1
R2 = 2,
#define R2 R2
R3 = 3,
#define R3 R3
R4 = 4,
#define R4 R4
R5 = 5,
#define R5 R5
R6 = 6,
#define R6 R6
R7 = 7,
#define R7 R7
P0 = 8,
#define P0 P0
P1 = 9,
#define P1 P1
P2 = 10,
#define P2 P2
P3 = 11,
#define P3 P3
P4 = 12,
#define P4 P4
P5 = 13,
#define P5 P5
USP = 14,
#define USP USP
A0W = 15,
#define A0W A0W
A1W = 16,
#define A1W A1W
A0X = 17,
#define A0X A0X
A1X = 18,
#define A1X A1X
ASTAT = 19,
#define ASTAT ASTAT
RETS = 20,
#define RETS RETS
PC= 21,
#define PC PC
RETX = 22,
#define RETX RETX
FP = 23,
#define FP FP
I0 = 24,
#define I0 I0
I1 = 25,
#define I1 I1
I2 = 26,
#define I2 I2
I3 = 27,
#define I3 I3
M0 = 28,
#define M0 M0
M1 = 29,
#define M1 M1
M2 = 30,
#define M2 M2
M3 = 31,
#define M3 M3
L0 = 32,
#define L0 L0
L1 = 33,
#define L1 L1
L2 = 34,
#define L2 L2
L3 = 35,
#define L3 L3
B_0 = 36,
#define B_0 B_0
B1 = 37,
#define B1 B1
B2 = 38,
#define B2 B2
B3 = 39,
#define B3 B3
LC0 = 40,
#define LC0 LC0
LC1 = 41,
#define LC1 LC1
LT0 = 42,
#define LT0 LT0
LT1 = 43,
#define LT1 LT1
LB0 = 44,
#define LB0 LB0
LB1 = 45,
#define LB1 LB1
SEQSTAT = 46
#define SEQSTAT SEQSTAT
};
/* Context to describe whole processor state. */
typedef struct
{
int version;
gregset_t gregs;
} mcontext_t;
/* Userlevel context. */
typedef struct ucontext
{
unsigned long int uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext;
__sigset_t uc_sigmask;
} ucontext_t;
#endif /* sys/ucontext.h */
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