5113f6f70
 김현기
kernel add
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
#include <linux/types.h>
#include <linux/errno.h>
#include <asm/uaccess.h>
#include <asm/sfp-machine.h>
#include <math-emu/soft-fp.h>
#include <math-emu/double.h>
#include <math-emu/single.h>
int
stfs(void *frS, void *ea)
{
FP_DECL_D(A);
FP_DECL_S(R);
FP_DECL_EX;
float f;
#ifdef DEBUG
printk("%s: S %p, ea %p
", __func__, frS, ea);
#endif
FP_UNPACK_DP(A, frS);
#ifdef DEBUG
printk("A: %ld %lu %lu %ld (%ld)
", A_s, A_f1, A_f0, A_e, A_c);
#endif
FP_CONV(S, D, 1, 2, R, A);
#ifdef DEBUG
printk("R: %ld %lu %ld (%ld)
", R_s, R_f, R_e, R_c);
#endif
_FP_PACK_CANONICAL(S, 1, R);
if (!FP_CUR_EXCEPTIONS || !__FPU_TRAP_P(FP_CUR_EXCEPTIONS)) {
_FP_PACK_RAW_1_P(S, &f, R);
if (copy_to_user(ea, &f, sizeof(float)))
return -EFAULT;
}
return FP_CUR_EXCEPTIONS;
}
|