18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 28c2ecf20Sopenharmony_ci#include <linux/types.h> 38c2ecf20Sopenharmony_ci#include <linux/errno.h> 48c2ecf20Sopenharmony_ci#include <linux/uaccess.h> 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci#include <asm/sfp-machine.h> 78c2ecf20Sopenharmony_ci#include <math-emu/soft-fp.h> 88c2ecf20Sopenharmony_ci#include <math-emu/double.h> 98c2ecf20Sopenharmony_ci#include <math-emu/single.h> 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ciint 128c2ecf20Sopenharmony_cistfs(void *frS, void *ea) 138c2ecf20Sopenharmony_ci{ 148c2ecf20Sopenharmony_ci FP_DECL_D(A); 158c2ecf20Sopenharmony_ci FP_DECL_S(R); 168c2ecf20Sopenharmony_ci FP_DECL_EX; 178c2ecf20Sopenharmony_ci float f; 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_ci#ifdef DEBUG 208c2ecf20Sopenharmony_ci printk("%s: S %p, ea %p\n", __func__, frS, ea); 218c2ecf20Sopenharmony_ci#endif 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci FP_UNPACK_DP(A, frS); 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci#ifdef DEBUG 268c2ecf20Sopenharmony_ci printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); 278c2ecf20Sopenharmony_ci#endif 288c2ecf20Sopenharmony_ci 298c2ecf20Sopenharmony_ci FP_CONV(S, D, 1, 2, R, A); 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci#ifdef DEBUG 328c2ecf20Sopenharmony_ci printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c); 338c2ecf20Sopenharmony_ci#endif 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_ci _FP_PACK_CANONICAL(S, 1, R); 368c2ecf20Sopenharmony_ci if (!FP_CUR_EXCEPTIONS || !__FPU_TRAP_P(FP_CUR_EXCEPTIONS)) { 378c2ecf20Sopenharmony_ci _FP_PACK_RAW_1_P(S, &f, R); 388c2ecf20Sopenharmony_ci if (copy_to_user(ea, &f, sizeof(float))) 398c2ecf20Sopenharmony_ci return -EFAULT; 408c2ecf20Sopenharmony_ci } 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ci return FP_CUR_EXCEPTIONS; 438c2ecf20Sopenharmony_ci} 44