/*
 * Copyright (C) 2020 Weber Yann
 * 
 * This file is part of pyrpn.
 * 
 * pyrpn 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 Software Foundation, either version 3 of the License, or
 * any later version.
 * 
 * pyrpn 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with pyrpn.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef __rpn_lib__h__
#define __rpn_lib__h__

#include "config.h"

#include <sys/mman.h>

/**@defgroup rpn_lib RPNlib
 * @brief Precompiled x86_64 assembly operations
 * @ingroup rpn_compile
 */

/**@file rpn_lib.h
 * @brief "Import" symbols defined in @ref rpn_lib.asm using @ref CODE_PART macro.
 *
 * For each symbol (piece of compiled assembly code) @ref CODE_PART defines :
 * - void *NAME : the pointer on compiled code
 * - unsigned long NAME_sz : the size of the code portion
 *
 * @see rpn_lib.asm
 * @ingroup rpn_lib
 */
/**@file rpn_lib.asm
 * @brief x86_64 RPN expression operations implementations
 * 
 * Exported symbols are found in @ref rpn_lib.h
 * @ingroup rpn_lib
 */


/**@brief Code part size macro */
#define CODE_SZ(NAME) NAME ## _sz

/**@brief macro to declare a code part and associated size */
#define CODE_PART(NAME) const extern void* NAME; \
/**@brief Cord part size */\
extern const unsigned long NAME ## _sz

/**@brief Define the type of value manipulated by RPN expressions
 *
 * Use it for stack and arguments items
 * @todo use it */
typedef unsigned long int rpn_value_t;

/**@brief Small alias for PyLong_FromUnsignedLong */
#define PyLong_FromRpnValue_t PyLong_FromUnsignedLong
/**@brief Small alias for PyLong_AsUnsignedLong */
#define PyLong_AsRpnValue_t PyLong_AsUnsignedLong

/**@brief Function heading code
 *
 * - stack frame creation
 * - argument processing
 * - etc.
 * @ingroup rpn_lib */
CODE_PART(rpn_exec);
/**@brief Function ends and ret code
 *
 * - pop and return head of stack value
 * - stack frame deletion
 * @ingroup rpn_lib */
CODE_PART(rpn_exec_ret);
/**@brief Constant value pushing symbol
 * @note except a value to be set
 * @ingroup rpn_lib */
CODE_PART(rpn_value);
/**@brief Argument pushing symbol
 * @note except a value to be set
 * @ingroup rpn_lib */
CODE_PART(rpn_arg);
/**@brief Addition symbol
 * @ingroup rpn_lib */
CODE_PART(rpn_add);
/**@brief Substraction symbol
 * @ingroup rpn_lib */
CODE_PART(rpn_sub);
/**@brief Division symbol
 * @ingroup rpn_lib */
CODE_PART(rpn_div);
/**@brief Multiplication symbol
 * @ingroup rpn_lib */
CODE_PART(rpn_mul);
/**@brief Modulo symbol
 * @ingroup rpn_lib */
CODE_PART(rpn_mod);
/**@brief Left shift symbol
 * @ingroup rpn_lib */
CODE_PART(rpn_shl);
/**@brief Right shift symbol
 * @ingroup rpn_lib */
CODE_PART(rpn_shr);
/**@brief Value exchange symbol
 * @ingroup rpn_lib */
CODE_PART(rpn_xchg);
/**@brief Head of stack duplication
 * @ingroup rpn_lib */
CODE_PART(rpn_dup);
/**@brief Arithmetic negation
 * @ingroup rpn_lib */
CODE_PART(rpn_neg);
/**@brief Binary not
 * @ingroup rpn_lib */
CODE_PART(rpn_not);
/**@brief Binary and
 * @ingroup rpn_lib */
CODE_PART(rpn_and);
/**@brief Binary or
 * @ingroup rpn_lib */
CODE_PART(rpn_or);
/**@brief Binary xor
 * @ingroup rpn_lib */
CODE_PART(rpn_xor);
/**@brief Pop head of stack
 * @ingroup rpn_lib */
CODE_PART(rpn_pop_op);

#endif