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
fdivs(void * frD,void * frA,void * frB)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