/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Very simple but very effective user-space memory tester.
 * Originally by Simon Kirby <sim@stormix.com> <sim@neato.org>
 * Version 2 by Charles Cazabon <charlesc-memtester@pyropus.ca>
 * Version 3 not publicly released.
 * Version 4 rewrite:
 * Copyright (C) 2004-2012 Charles Cazabon <charlesc-memtester@pyropus.ca>
 *
 * This file contains some macro definitions for handling 32/64 bit platforms.
 *
 */

#include <linux/limits.h>

#define rand32() random32()

#ifdef CONFIG_64BIT
    #define rand64() (((ul) rand32()) << 32 | ((ul) rand32()))
    #define rand_ul() rand64()
    #define UL_ONEBITS 0xffffffffffffffffUL
    #define UL_LEN 64
    #define CHECKERBOARD1 0x5555555555555555
    #define CHECKERBOARD2 0xaaaaaaaaaaaaaaaa
    #define UL_BYTE(x) (((ul)x | (ul)x<<8 | (ul)x<<16 | (ul)x<<24 | (ul)x<<32 | (ul)x<<40 | (ul)x<<48 | (ul)x<<56))
#else
    #define rand_ul() rand32()
    #define UL_ONEBITS 0xffffffff
    #define UL_LEN 32
    #define CHECKERBOARD1 0x55555555
    #define CHECKERBOARD2 0xaaaaaaaa
    #define UL_BYTE(x) ((x | x << 8 | x << 16 | x << 24))
#endif