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 11 int 12 stfs(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