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
stfs(void * frS,void * ea)11 stfs(void *frS, void *ea)
12 {
13 FP_DECL_D(A);
14 FP_DECL_S(R);
15 FP_DECL_EX;
16 float f;
17
18 #ifdef DEBUG
19 printk("%s: S %p, ea %p\n", __func__, frS, ea);
20 #endif
21
22 FP_UNPACK_DP(A, frS);
23
24 #ifdef DEBUG
25 printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
26 #endif
27
28 FP_CONV(S, D, 1, 2, R, A);
29
30 #ifdef DEBUG
31 printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
32 #endif
33
34 _FP_PACK_CANONICAL(S, 1, R);
35 if (!FP_CUR_EXCEPTIONS || !__FPU_TRAP_P(FP_CUR_EXCEPTIONS)) {
36 _FP_PACK_RAW_1_P(S, &f, R);
37 if (copy_to_user(ea, &f, sizeof(float)))
38 return -EFAULT;
39 }
40
41 return FP_CUR_EXCEPTIONS;
42 }
43