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