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