1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/types.h> 3 #include <linux/errno.h> 4 #include <linux/uaccess.h> 5 6 #include <asm/sfp-machine.h> 7 #include <math-emu/soft-fp.h> 8 9 int 10 mcrfs(u32 *ccr, u32 crfD, u32 crfS) 11 { 12 u32 value, clear; 13 14 #ifdef DEBUG 15 printk("%s: %p (%08x) %d %d\n", __func__, ccr, *ccr, crfD, crfS); 16 #endif 17 18 clear = 15 << ((7 - crfS) << 2); 19 if (!crfS) 20 clear = 0x90000000; 21 22 value = (__FPU_FPSCR >> ((7 - crfS) << 2)) & 15; 23 __FPU_FPSCR &= ~(clear); 24 25 *ccr &= ~(15 << ((7 - crfD) << 2)); 26 *ccr |= (value << ((7 - crfD) << 2)); 27 28 #ifdef DEBUG 29 printk("CR: %08x\n", __func__, *ccr); 30 #endif 31 32 return 0; 33 } 34