34 lines
620 B
C
34 lines
620 B
C
|
// 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;
|
||
|
|
}
|