projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #include <linux/types.h> |
| 2 | #include <linux/errno.h> | |
| 3 | #include <asm/uaccess.h> | |
| 4 | ||
| d2b194ed KG |
5 | #include <asm/sfp-machine.h> |
| 6 | #include <math-emu/soft-fp.h> | |
| 1da177e4 LT |
7 | |
| 8 | int | |
| 9 | mtfsf(unsigned int FM, u32 *frB) | |
| 10 | { | |
| 11 | u32 mask; | |
| d2b194ed | 12 | u32 fpscr; |
| 1da177e4 LT |
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 | ||
| d2b194ed KG |
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 | ||
| 1da177e4 | 58 | #ifdef DEBUG |
| e48b1b45 | 59 | printk("%s: %02x %p: %08lx\n", __func__, FM, frB, __FPU_FPSCR); |
| 1da177e4 LT |
60 | #endif |
| 61 | ||
| 62 | return 0; | |
| 63 | } |