1// SPDX-License-Identifier: GPL-2.0
2#include <linux/types.h>
3#include <linux/errno.h>
4#include <linux/uaccess.h>
5
6#include <asm/sfp-machine.h>
7#include <math-emu/soft-fp.h>
8#include <math-emu/double.h>
9#include <math-emu/single.h>
10
11int
12stfs(void *frS, void *ea)
13{
14	FP_DECL_D(A);
15	FP_DECL_S(R);
16	FP_DECL_EX;
17	float f;
18
19#ifdef DEBUG
20	printk("%s: S %p, ea %p\n", __func__, frS, ea);
21#endif
22
23	FP_UNPACK_DP(A, frS);
24
25#ifdef DEBUG
26	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
27#endif
28
29	FP_CONV(S, D, 1, 2, R, A);
30
31#ifdef DEBUG
32	printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
33#endif
34
35	_FP_PACK_CANONICAL(S, 1, R);
36	if (!FP_CUR_EXCEPTIONS || !__FPU_TRAP_P(FP_CUR_EXCEPTIONS)) {
37		_FP_PACK_RAW_1_P(S, &f, R);
38		if (copy_to_user(ea, &f, sizeof(float)))
39			return -EFAULT;
40	}
41
42	return FP_CUR_EXCEPTIONS;
43}
44