| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 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 | } |