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 | |