1#include <linux/types.h> 2#include <linux/errno.h> 3#include <asm/uaccess.h> 4 5#include <asm/sfp-machine.h> 6#include <math-emu/soft-fp.h> 7#include <math-emu/double.h> 8 9int 10fdiv(void *frD, void *frA, void *frB) 11{ 12 FP_DECL_D(A); 13 FP_DECL_D(B); 14 FP_DECL_D(R); 15 FP_DECL_EX; 16 17#ifdef DEBUG 18 printk("%s: %p %p %p\n", __func__, frD, frA, frB); 19#endif 20 21 FP_UNPACK_DP(A, frA); 22 FP_UNPACK_DP(B, frB); 23 24#ifdef DEBUG 25 printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); 26 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 27#endif 28 29 if (A_c == FP_CLS_ZERO && B_c == FP_CLS_ZERO) { 30 FP_SET_EXCEPTION(EFLAG_VXZDZ); 31#ifdef DEBUG 32 printk("%s: FPSCR_VXZDZ raised\n", __func__); 33#endif 34 } 35 if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) { 36 FP_SET_EXCEPTION(EFLAG_VXIDI); 37#ifdef DEBUG 38 printk("%s: FPSCR_VXIDI raised\n", __func__); 39#endif 40 } 41 42 if (B_c == FP_CLS_ZERO && A_c != FP_CLS_ZERO) { 43 FP_SET_EXCEPTION(EFLAG_DIVZERO); 44 if (__FPU_TRAP_P(EFLAG_DIVZERO)) 45 return FP_CUR_EXCEPTIONS; 46 } 47 FP_DIV_D(R, A, B); 48 49#ifdef DEBUG 50 printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 51#endif 52 53 __FP_PACK_D(frD, R); 54 55 return FP_CUR_EXCEPTIONS; 56} 57