1*b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 25cd27208SKumar Gala #include <linux/types.h> 35cd27208SKumar Gala #include <linux/errno.h> 47c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 55cd27208SKumar Gala 6d2b194edSKumar Gala #include <asm/sfp-machine.h> 7d2b194edSKumar Gala #include <math-emu/soft-fp.h> 8d2b194edSKumar Gala #include <math-emu/double.h> 9d2b194edSKumar Gala #include <math-emu/single.h> 105cd27208SKumar Gala 115cd27208SKumar Gala int 125cd27208SKumar Gala stfs(void *frS, void *ea) 135cd27208SKumar Gala { 145cd27208SKumar Gala FP_DECL_D(A); 155cd27208SKumar Gala FP_DECL_S(R); 16d2b194edSKumar Gala FP_DECL_EX; 175cd27208SKumar Gala float f; 185cd27208SKumar Gala 195cd27208SKumar Gala #ifdef DEBUG 20e48b1b45SHarvey Harrison printk("%s: S %p, ea %p\n", __func__, frS, ea); 215cd27208SKumar Gala #endif 225cd27208SKumar Gala 23d2b194edSKumar Gala FP_UNPACK_DP(A, frS); 245cd27208SKumar Gala 255cd27208SKumar Gala #ifdef DEBUG 265cd27208SKumar Gala printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); 275cd27208SKumar Gala #endif 285cd27208SKumar Gala 295cd27208SKumar Gala FP_CONV(S, D, 1, 2, R, A); 305cd27208SKumar Gala 315cd27208SKumar Gala #ifdef DEBUG 325cd27208SKumar Gala printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c); 335cd27208SKumar Gala #endif 345cd27208SKumar Gala 35d2b194edSKumar Gala _FP_PACK_CANONICAL(S, 1, R); 36d2b194edSKumar Gala if (!FP_CUR_EXCEPTIONS || !__FPU_TRAP_P(FP_CUR_EXCEPTIONS)) { 37d2b194edSKumar Gala _FP_PACK_RAW_1_P(S, &f, R); 385cd27208SKumar Gala if (copy_to_user(ea, &f, sizeof(float))) 395cd27208SKumar Gala return -EFAULT; 405cd27208SKumar Gala } 415cd27208SKumar Gala 42d2b194edSKumar Gala return FP_CUR_EXCEPTIONS; 435cd27208SKumar Gala } 44