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 fdivs(void *frD, void *frA, void *frB) 13 { 14 FP_DECL_D(A); 15 FP_DECL_D(B); 16 FP_DECL_D(R); 17 FP_DECL_EX; 18 19 #ifdef DEBUG 20 printk("%s: %p %p %p\n", __func__, frD, frA, frB); 21 #endif 22 23 FP_UNPACK_DP(A, frA); 24 FP_UNPACK_DP(B, frB); 25 26 #ifdef DEBUG 27 printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); 28 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 29 #endif 30 31 if (A_c == FP_CLS_ZERO && B_c == FP_CLS_ZERO) { 32 FP_SET_EXCEPTION(EFLAG_VXZDZ); 33 #ifdef DEBUG 34 printk("%s: FPSCR_VXZDZ raised\n", __func__); 35 #endif 36 } 37 if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) { 38 FP_SET_EXCEPTION(EFLAG_VXIDI); 39 #ifdef DEBUG 40 printk("%s: FPSCR_VXIDI raised\n", __func__); 41 #endif 42 } 43 44 if (B_c == FP_CLS_ZERO && A_c != FP_CLS_ZERO) { 45 FP_SET_EXCEPTION(EFLAG_DIVZERO); 46 if (__FPU_TRAP_P(EFLAG_DIVZERO)) 47 return FP_CUR_EXCEPTIONS; 48 } 49 50 FP_DIV_D(R, A, B); 51 52 #ifdef DEBUG 53 printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 54 #endif 55 56 __FP_PACK_DS(frD, R); 57 58 return FP_CUR_EXCEPTIONS; 59 } 60