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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | #include <linux/types.h> |
3 | #include <linux/errno.h> | |
7c0f6ba6 | 4 | #include <linux/uaccess.h> |
1da177e4 | 5 | |
d2b194ed KG |
6 | #include <asm/sfp-machine.h> |
7 | #include <math-emu/soft-fp.h> | |
8 | #include <math-emu/double.h> | |
1da177e4 LT |
9 | |
10 | int | |
11 | fmul(void *frD, void *frA, void *frB) | |
12 | { | |
13 | FP_DECL_D(A); | |
14 | FP_DECL_D(B); | |
15 | FP_DECL_D(R); | |
d2b194ed | 16 | FP_DECL_EX; |
1da177e4 LT |
17 | |
18 | #ifdef DEBUG | |
e48b1b45 | 19 | printk("%s: %p %p %p\n", __func__, frD, frA, frB); |
1da177e4 LT |
20 | #endif |
21 | ||
d2b194ed KG |
22 | FP_UNPACK_DP(A, frA); |
23 | FP_UNPACK_DP(B, frB); | |
1da177e4 LT |
24 | |
25 | #ifdef DEBUG | |
26 | printk("A: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n", | |
27 | A_s, A_f1, A_f0, A_e, A_c, A_f1, A_f0, A_e + 1023); | |
28 | printk("B: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n", | |
29 | B_s, B_f1, B_f0, B_e, B_c, B_f1, B_f0, B_e + 1023); | |
30 | #endif | |
31 | ||
32 | if ((A_c == FP_CLS_INF && B_c == FP_CLS_ZERO) || | |
33 | (A_c == FP_CLS_ZERO && B_c == FP_CLS_INF)) | |
033b8a33 | 34 | FP_SET_EXCEPTION(EFLAG_VXIMZ); |
1da177e4 LT |
35 | |
36 | FP_MUL_D(R, A, B); | |
37 | ||
38 | #ifdef DEBUG | |
39 | printk("D: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n", | |
40 | R_s, R_f1, R_f0, R_e, R_c, R_f1, R_f0, R_e + 1023); | |
41 | #endif | |
42 | ||
d2b194ed KG |
43 | __FP_PACK_D(frD, R); |
44 | ||
45 | return FP_CUR_EXCEPTIONS; | |
1da177e4 | 46 | } |