| 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 | |
| 5 | #include "soft-fp.h" |
| 6 | #include "double.h" |
| 7 | #include "single.h" |
| 8 | |
| 9 | int |
| 10 | stfs(void *frS, void *ea) |
| 11 | { |
| 12 | FP_DECL_D(A); |
| 13 | FP_DECL_S(R); |
| 14 | float f; |
| 15 | int err; |
| 16 | |
| 17 | #ifdef DEBUG |
| 18 | printk("%s: S %p, ea %p\n", __FUNCTION__, frS, ea); |
| 19 | #endif |
| 20 | |
| 21 | __FP_UNPACK_D(A, frS); |
| 22 | |
| 23 | #ifdef DEBUG |
| 24 | printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); |
| 25 | #endif |
| 26 | |
| 27 | FP_CONV(S, D, 1, 2, R, A); |
| 28 | |
| 29 | #ifdef DEBUG |
| 30 | printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c); |
| 31 | #endif |
| 32 | |
| 33 | err = _FP_PACK_CANONICAL(S, 1, R); |
| 34 | if (!err || !__FPU_TRAP_P(err)) { |
| 35 | __FP_PACK_RAW_1(S, &f, R); |
| 36 | if (copy_to_user(ea, &f, sizeof(float))) |
| 37 | return -EFAULT; |
| 38 | } |
| 39 | |
| 40 | return err; |
| 41 | } |