xref: /openbmc/linux/arch/powerpc/math-emu/fadd.c (revision b627b4ed)
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 fadd(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 	FP_ADD_D(R, A, B);
30 
31 #ifdef DEBUG
32 	printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
33 #endif
34 
35 	__FP_PACK_D(frD, R);
36 
37 	return FP_CUR_EXCEPTIONS;
38 }
39