1 #include <linux/types.h>
2 #include <linux/errno.h>
3 #include <asm/uaccess.h>
4
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>
9
10 int
lfs(void * frD,void * ea)11 lfs(void *frD, void *ea)
12 {
13 FP_DECL_D(R);
14 FP_DECL_S(A);
15 FP_DECL_EX;
16 float f;
17
18 #ifdef DEBUG
19 printk("%s: D %p, ea %p\n", __func__, frD, ea);
20 #endif
21
22 if (copy_from_user(&f, ea, sizeof(float)))
23 return -EFAULT;
24
25 FP_UNPACK_S(A, f);
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
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;
46 }
47