/*
 * Copyright (C) 2003, 2004, 2005 Filip Pizlo. All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY FILIP PIZLO ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL FILIP PIZLO OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */


#define INT_PUSH() do {                                 \
    ++stack_top;                                        \
} while (0)

#define INT_POP() do {                                  \
    --stack_top;                                        \
} while (0)

#define INT_STACK(arg)              (*(stack_top-(arg)))
#define INT_STACK_PTR(arg)          ((uint8_t*) INT_STACK(arg))

#define INT_STACK_SET(arg,val)      (*(stack_top-(arg))=(val))
#define INT_STACK_PTR_SET(arg,val)  (INT_STACK_SET(arg,(gpc_cell_t)val))

#define INT_STREAM(arg)             (inst[arg])

#define INT_FAILURE()               goto failure

#define INT_CLEANUP()               do {} while(0)