#ifndef CYGONCE_SIGSETJMP_H
#define CYGONCE_SIGSETJMP_H
//=============================================================================
//
//      sigsetjmp.h
//
//      POSIX sigsetjmp header
//
//=============================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under    
// the terms of the GNU General Public License as published by the Free     
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// version.                                                                 
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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
// for more details.                                                        
//
// You should have received a copy of the GNU General Public License        
// along with eCos; if not, write to the Free Software Foundation, Inc.,    
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//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
// and link it with other works to produce a work based on this file,       
// this file does not by itself cause the resulting work to be covered by   
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// General Public License v2.                                               
//
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// ####ECOSGPLCOPYRIGHTEND####                                              
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     nickg, jlarmour
// Contributors:  
// Date:          2000-03-17
// Purpose:       POSIX sigsetjmp header
// Description:   This header contains all the definitions needed to support
//                the POSIX sigsetjmp/siglongjmp API under eCos.
//              
// Usage:         This file must be included indirectly via
//                the C library setjmp.h header.
//              
//
//####DESCRIPTIONEND####
//
//=============================================================================

#include <signal.h>
#include <cyg/hal/hal_arch.h>       // hal_jmp_buf

//=============================================================================
// sigjmp_buf structure
// The API requires this to be an array type, but this array actually
// contains three fields:
// 0..sizeof(hal_jmp_buf)-1               HAL jump buffer
// sizeof(hal_jmp_buf)                    savemask value (an int)
// sizeof(hal_jmp_buf)+sizeof(int)...     sigset_t containing saved mask

typedef struct {
    hal_jmp_buf __jmp_buf;
    int  __savemask;
    sigset_t __sigsavemask;
} sigjmp_buf[1];

//=============================================================================
// sigsetjmp() macro

#define sigsetjmp( _env_, _savemask_ )                                        \
(                                                                             \
 ((_env_)[0].__savemask = _savemask_),                                        \
 ((_savemask_)?pthread_sigmask(SIG_BLOCK,NULL,&((_env_)[0].__sigsavemask)):0),\
 hal_setjmp((_env_)[0].__jmp_buf)                                             \
)

//=============================================================================
// siglongjmp function

__externC void siglongjmp( sigjmp_buf env, int val );

//-----------------------------------------------------------------------------
#endif // ifndef CYGONCE_SIGSETJMP_H
// End of sigsetjmp.h
