1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun #include <linux/types.h>
3*4882a593Smuzhiyun #include <linux/errno.h>
4*4882a593Smuzhiyun #include <linux/uaccess.h>
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <asm/sfp-machine.h>
7*4882a593Smuzhiyun #include <math-emu/soft-fp.h>
8*4882a593Smuzhiyun #include <math-emu/double.h>
9*4882a593Smuzhiyun #include <math-emu/single.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun int
stfs(void * frS,void * ea)12*4882a593Smuzhiyun stfs(void *frS, void *ea)
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun FP_DECL_D(A);
15*4882a593Smuzhiyun FP_DECL_S(R);
16*4882a593Smuzhiyun FP_DECL_EX;
17*4882a593Smuzhiyun float f;
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #ifdef DEBUG
20*4882a593Smuzhiyun printk("%s: S %p, ea %p\n", __func__, frS, ea);
21*4882a593Smuzhiyun #endif
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun FP_UNPACK_DP(A, frS);
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun #ifdef DEBUG
26*4882a593Smuzhiyun printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
27*4882a593Smuzhiyun #endif
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun FP_CONV(S, D, 1, 2, R, A);
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun #ifdef DEBUG
32*4882a593Smuzhiyun printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
33*4882a593Smuzhiyun #endif
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun _FP_PACK_CANONICAL(S, 1, R);
36*4882a593Smuzhiyun if (!FP_CUR_EXCEPTIONS || !__FPU_TRAP_P(FP_CUR_EXCEPTIONS)) {
37*4882a593Smuzhiyun _FP_PACK_RAW_1_P(S, &f, R);
38*4882a593Smuzhiyun if (copy_to_user(ea, &f, sizeof(float)))
39*4882a593Smuzhiyun return -EFAULT;
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun return FP_CUR_EXCEPTIONS;
43*4882a593Smuzhiyun }
44