42 lines
693 B
C
42 lines
693 B
C
#include <linux/types.h>
|
|
#include <linux/errno.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#include "soft-fp.h"
|
|
#include "double.h"
|
|
#include "single.h"
|
|
|
|
int
|
|
stfs(void *frS, void *ea)
|
|
{
|
|
FP_DECL_D(A);
|
|
FP_DECL_S(R);
|
|
float f;
|
|
int err;
|
|
|
|
#ifdef DEBUG
|
|
printk("%s: S %p, ea %p\n", __FUNCTION__, frS, ea);
|
|
#endif
|
|
|
|
__FP_UNPACK_D(A, frS);
|
|
|
|
#ifdef DEBUG
|
|
printk("A: %ld %lu %lu %ld (%ld)\n", 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)\n", R_s, R_f, R_e, R_c);
|
|
#endif
|
|
|
|
err = _FP_PACK_CANONICAL(S, 1, R);
|
|
if (!err || !__FPU_TRAP_P(err)) {
|
|
__FP_PACK_RAW_1(S, &f, R);
|
|
if (copy_to_user(ea, &f, sizeof(float)))
|
|
return -EFAULT;
|
|
}
|
|
|
|
return err;
|
|
}
|