| 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 | mtfsf(unsigned int FM, u32 *frB) |
| 10 | { |
| 11 | u32 mask; |
| Kumar Gala | d2b194e | 2008-06-04 02:59:29 -0500 | [diff] [blame] | 12 | u32 fpscr; |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | |
| 14 | if (FM == 0) |
| 15 | return 0; |
| 16 | |
| 17 | if (FM == 0xff) |
| 18 | mask = 0x9fffffff; |
| 19 | else { |
| 20 | mask = 0; |
| 21 | if (FM & (1 << 0)) |
| 22 | mask |= 0x90000000; |
| 23 | if (FM & (1 << 1)) |
| 24 | mask |= 0x0f000000; |
| 25 | if (FM & (1 << 2)) |
| 26 | mask |= 0x00f00000; |
| 27 | if (FM & (1 << 3)) |
| 28 | mask |= 0x000f0000; |
| 29 | if (FM & (1 << 4)) |
| 30 | mask |= 0x0000f000; |
| 31 | if (FM & (1 << 5)) |
| 32 | mask |= 0x00000f00; |
| 33 | if (FM & (1 << 6)) |
| 34 | mask |= 0x000000f0; |
| 35 | if (FM & (1 << 7)) |
| 36 | mask |= 0x0000000f; |
| 37 | } |
| 38 | |
| 39 | __FPU_FPSCR &= ~(mask); |
| 40 | __FPU_FPSCR |= (frB[1] & mask); |
| 41 | |
| Kumar Gala | d2b194e | 2008-06-04 02:59:29 -0500 | [diff] [blame] | 42 | __FPU_FPSCR &= ~(FPSCR_VX); |
| 43 | if (__FPU_FPSCR & (FPSCR_VXSNAN | FPSCR_VXISI | FPSCR_VXIDI | |
| 44 | FPSCR_VXZDZ | FPSCR_VXIMZ | FPSCR_VXVC | |
| 45 | FPSCR_VXSOFT | FPSCR_VXSQRT | FPSCR_VXCVI)) |
| 46 | __FPU_FPSCR |= FPSCR_VX; |
| 47 | |
| 48 | fpscr = __FPU_FPSCR; |
| 49 | fpscr &= ~(FPSCR_FEX); |
| 50 | if (((fpscr & FPSCR_VX) && (fpscr & FPSCR_VE)) || |
| 51 | ((fpscr & FPSCR_OX) && (fpscr & FPSCR_OE)) || |
| 52 | ((fpscr & FPSCR_UX) && (fpscr & FPSCR_UE)) || |
| 53 | ((fpscr & FPSCR_ZX) && (fpscr & FPSCR_ZE)) || |
| 54 | ((fpscr & FPSCR_XX) && (fpscr & FPSCR_XE))) |
| 55 | fpscr |= FPSCR_FEX; |
| 56 | __FPU_FPSCR = fpscr; |
| 57 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #ifdef DEBUG |
| Harvey Harrison | e48b1b4 | 2008-03-29 08:21:07 +1100 | [diff] [blame] | 59 | printk("%s: %02x %p: %08lx\n", __func__, FM, frB, __FPU_FPSCR); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | #endif |
| 61 | |
| 62 | return 0; |
| 63 | } |