// SPDX-License-Identifier: GPL-2.0
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/uaccess.h>

#include <asm/sfp-machine.h>
#include <math-emu/soft-fp.h>

int
mcrfs(u32 *ccr, u32 crfD, u32 crfS)
{
        u32 value, clear;

#ifdef DEBUG
        printk("%s: %p (%08x) %d %d\n", __func__, ccr, *ccr, crfD, crfS);
#endif

        clear = 15 << ((7 - crfS) << 2);
        if (!crfS)
                clear = 0x90000000;

        value = (__FPU_FPSCR >> ((7 - crfS) << 2)) & 15;
        __FPU_FPSCR &= ~(clear);

        *ccr &= ~(15 << ((7 - crfD) << 2));
        *ccr |= (value << ((7 - crfD) << 2));

#ifdef DEBUG
        printk("CR: %08x\n", __func__, *ccr);
#endif

        return 0;
}