| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/types.h> |
| 2 | #include <linux/errno.h> |
| 3 | #include <asm/uaccess.h> |
| 4 | |
| Kumar Gala | d2b194e | 2008-06-04 02:59:29 -0500 | [diff] [blame] | 5 | #include <asm/sfp-machine.h> |
| 6 | #include <math-emu/soft-fp.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | |
| 8 | int |
| 9 | mcrfs(u32 *ccr, u32 crfD, u32 crfS) |
| 10 | { |
| 11 | u32 value, clear; |
| 12 | |
| 13 | #ifdef DEBUG |
| Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 14 | printk("%s: %p (%08x) %d %d\n", __func__, ccr, *ccr, crfD, crfS); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
| Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 28 | printk("CR: %08x\n", __func__, *ccr); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #endif |
| 30 | |
| 31 | return 0; |
| 32 | } |