1/* 2 * BK Id: SCCS/s.fdiv.c 1.6 05/17/01 18:14:22 cort 3 */ 4#include <linux/types.h> 5#include <linux/errno.h> 6#include <asm/uaccess.h> 7 8#include "soft-fp.h" 9#include "double.h" 10 11int 12fdiv(void *frD, void *frA, void *frB) 13{ 14 FP_DECL_D(A); 15 FP_DECL_D(B); 16 FP_DECL_D(R); 17 int ret = 0; 18 19#ifdef DEBUG 20 printk("%s: %p %p %p\n", __FUNCTION__, frD, frA, frB); 21#endif 22 23 __FP_UNPACK_D(A, frA); 24 __FP_UNPACK_D(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 ret |= EFLAG_VXZDZ; 33#ifdef DEBUG 34 printk("%s: FPSCR_VXZDZ raised\n", __FUNCTION__); 35#endif 36 } 37 if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) { 38 ret |= EFLAG_VXIDI; 39#ifdef DEBUG 40 printk("%s: FPSCR_VXIDI raised\n", __FUNCTION__); 41#endif 42 } 43 44 if (B_c == FP_CLS_ZERO && A_c != FP_CLS_ZERO) { 45 ret |= EFLAG_DIVZERO; 46 if (__FPU_TRAP_P(EFLAG_DIVZERO)) 47 return ret; 48 } 49 FP_DIV_D(R, A, B); 50 51#ifdef DEBUG 52 printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 53#endif 54 55 return (ret | __FP_PACK_D(frD, R)); 56} 57