/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

/*
 * This code is based on Labyrinth of Time code with assistance of
 *
 * Copyright (c) 1993 Terra Nova Development
 * Copyright (c) 2004 The Wyrmkeep Entertainment Co.
 *
 */

#include "lab/stddefines.h"

namespace Lab {

/*****************************************************************************/
/* Allocates a chunk of memory.                                              */
/*****************************************************************************/
bool allocate(void **Ptr, uint32 Size) {
	(*Ptr) = malloc(Size);

	if (*Ptr)
		memset(*Ptr, 0, (size_t) Size);

	return (*Ptr != NULL);
}




/*****************************************************************************/
/* Allocates a piece of chip memory.                                         */
/*****************************************************************************/
bool allocatechip(void **Ptr, uint32 Size) {
	return allocate(Ptr, Size);
}

/*****************************************************************************/
/* Allocates a chunk of dos memory.                                          */
/*****************************************************************************/
bool allocatedos(void **Ptr, uint32 Size) {
#if defined(DOSCODE)
	static union REGS regs;

	regs.x.eax = 0x100;
	regs.x.ebx = (Size >> 4);
	int386(0x31, &regs, &regs);

	if (regs.x.cflag) {
		*Ptr = NULL;
		return false;
	}

	*Ptr = (char *)((regs.x.eax & 0xFFFF) << 4);
	return (*Ptr != NULL);
#else
	*Ptr = malloc(Size);
	return (*Ptr != NULL);
#endif
}

/*****************************************************************************/
/* Deallocates a piece of memory.                                            */
/*****************************************************************************/
void deallocate(void *Ptr, uint32 Size) {
	if (Ptr)
		free(Ptr);
}

} // End of namespace Lab