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 108c2ecf20Sopenharmony_ciint 118c2ecf20Sopenharmony_cifsub(void *frD, void *frA, void *frB) 128c2ecf20Sopenharmony_ci{ 138c2ecf20Sopenharmony_ci FP_DECL_D(A); 148c2ecf20Sopenharmony_ci FP_DECL_D(B); 158c2ecf20Sopenharmony_ci FP_DECL_D(R); 168c2ecf20Sopenharmony_ci FP_DECL_EX; 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ci#ifdef DEBUG 198c2ecf20Sopenharmony_ci printk("%s: %p %p %p\n", __func__, frD, frA, frB); 208c2ecf20Sopenharmony_ci#endif 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci FP_UNPACK_DP(A, frA); 238c2ecf20Sopenharmony_ci FP_UNPACK_DP(B, frB); 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 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 288c2ecf20Sopenharmony_ci#endif 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ci if (B_c != FP_CLS_NAN) 318c2ecf20Sopenharmony_ci B_s ^= 1; 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ci if (A_s != B_s && A_c == FP_CLS_INF && B_c == FP_CLS_INF) 348c2ecf20Sopenharmony_ci FP_SET_EXCEPTION(EFLAG_VXISI); 358c2ecf20Sopenharmony_ci 368c2ecf20Sopenharmony_ci FP_ADD_D(R, A, B); 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ci#ifdef DEBUG 398c2ecf20Sopenharmony_ci printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 408c2ecf20Sopenharmony_ci#endif 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ci __FP_PACK_D(frD, R); 438c2ecf20Sopenharmony_ci 448c2ecf20Sopenharmony_ci return FP_CUR_EXCEPTIONS; 458c2ecf20Sopenharmony_ci} 46