Commit | Line | Data |
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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> | |
7 | #include <math-emu/double.h> | |
8 | #include <math-emu/single.h> | |
1da177e4 LT |
9 | |
10 | int | |
11 | lfs(void *frD, void *ea) | |
12 | { | |
13 | FP_DECL_D(R); | |
14 | FP_DECL_S(A); | |
d2b194ed | 15 | FP_DECL_EX; |
1da177e4 LT |
16 | float f; |
17 | ||
18 | #ifdef DEBUG | |
e48b1b45 | 19 | printk("%s: D %p, ea %p\n", __func__, frD, ea); |
1da177e4 LT |
20 | #endif |
21 | ||
22 | if (copy_from_user(&f, ea, sizeof(float))) | |
23 | return -EFAULT; | |
24 | ||
d2b194ed | 25 | FP_UNPACK_S(A, f); |
1da177e4 LT |
26 | |
27 | #ifdef DEBUG | |
28 | printk("A: %ld %lu %ld (%ld) [%08lx]\n", A_s, A_f, A_e, A_c, | |
29 | *(unsigned long *)&f); | |
30 | #endif | |
31 | ||
32 | FP_CONV(D, S, 2, 1, R, A); | |
33 | ||
34 | #ifdef DEBUG | |
35 | printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); | |
36 | #endif | |
37 | ||
d2b194ed KG |
38 | if (R_c == FP_CLS_NAN) { |
39 | R_e = _FP_EXPMAX_D; | |
40 | _FP_PACK_RAW_2_P(D, frD, R); | |
41 | } else { | |
42 | __FP_PACK_D(frD, R); | |
43 | } | |
44 | ||
45 | return 0; | |
1da177e4 | 46 | } |