xref: /linux/arch/powerpc/math-emu/fmuls.c (revision f3d9478b2ce468c3115b02ecae7e975990697f15)
1 #include <linux/types.h>
2 #include <linux/errno.h>
3 #include <asm/uaccess.h>
4 
5 #include "soft-fp.h"
6 #include "double.h"
7 #include "single.h"
8 
9 int
10 fmuls(void *frD, void *frA, void *frB)
11 {
12 	FP_DECL_D(A);
13 	FP_DECL_D(B);
14 	FP_DECL_D(R);
15 	int ret = 0;
16 
17 #ifdef DEBUG
18 	printk("%s: %p %p %p\n", __FUNCTION__, frD, frA, frB);
19 #endif
20 
21 	__FP_UNPACK_D(A, frA);
22 	__FP_UNPACK_D(B, frB);
23 
24 #ifdef DEBUG
25 	printk("A: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
26 	       A_s, A_f1, A_f0, A_e, A_c, A_f1, A_f0, A_e + 1023);
27 	printk("B: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
28 	       B_s, B_f1, B_f0, B_e, B_c, B_f1, B_f0, B_e + 1023);
29 #endif
30 
31 	if ((A_c == FP_CLS_INF && B_c == FP_CLS_ZERO) ||
32 	    (A_c == FP_CLS_ZERO && B_c == FP_CLS_INF))
33 		ret |= EFLAG_VXIMZ;
34 
35 	FP_MUL_D(R, A, B);
36 
37 #ifdef DEBUG
38 	printk("D: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
39 	       R_s, R_f1, R_f0, R_e, R_c, R_f1, R_f0, R_e + 1023);
40 #endif
41 
42 	return (ret | __FP_PACK_DS(frD, R));
43 }
44