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 9 int 10 fmsub(void *frD, void *frA, void *frB, void *frC) 11 { 12 FP_DECL_D(R); 13 FP_DECL_D(A); 14 FP_DECL_D(B); 15 FP_DECL_D(C); 16 FP_DECL_D(T); 17 FP_DECL_EX; 18 19 #ifdef DEBUG 20 printk("%s: %p %p %p %p\n", __func__, frD, frA, frB, frC); 21 #endif 22 23 FP_UNPACK_DP(A, frA); 24 FP_UNPACK_DP(B, frB); 25 FP_UNPACK_DP(C, frC); 26 27 #ifdef DEBUG 28 printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); 29 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 30 printk("C: %ld %lu %lu %ld (%ld)\n", C_s, C_f1, C_f0, C_e, C_c); 31 #endif 32 33 if ((A_c == FP_CLS_INF && C_c == FP_CLS_ZERO) || 34 (A_c == FP_CLS_ZERO && C_c == FP_CLS_INF)) 35 FP_SET_EXCEPTION(EFLAG_VXIMZ); 36 37 FP_MUL_D(T, A, C); 38 39 if (B_c != FP_CLS_NAN) 40 B_s ^= 1; 41 42 if (T_s != B_s && T_c == FP_CLS_INF && B_c == FP_CLS_INF) 43 FP_SET_EXCEPTION(EFLAG_VXISI); 44 45 FP_ADD_D(R, T, B); 46 47 #ifdef DEBUG 48 printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 49 #endif 50 51 __FP_PACK_D(frD, R); 52 53 return FP_CUR_EXCEPTIONS; 54 } 55