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1da177e4 LT |
1 | #include <linux/types.h> |
2 | #include <linux/errno.h> | |
7c0f6ba6 | 3 | #include <linux/uaccess.h> |
1da177e4 | 4 | |
d2b194ed KG |
5 | #include <asm/sfp-machine.h> |
6 | #include <math-emu/soft-fp.h> | |
7 | #include <math-emu/double.h> | |
1da177e4 LT |
8 | |
9 | int | |
10 | fdiv(void *frD, void *frA, void *frB) | |
11 | { | |
12 | FP_DECL_D(A); | |
13 | FP_DECL_D(B); | |
14 | FP_DECL_D(R); | |
d2b194ed | 15 | FP_DECL_EX; |
1da177e4 LT |
16 | |
17 | #ifdef DEBUG | |
e48b1b45 | 18 | printk("%s: %p %p %p\n", __func__, frD, frA, frB); |
1da177e4 LT |
19 | #endif |
20 | ||
d2b194ed KG |
21 | FP_UNPACK_DP(A, frA); |
22 | FP_UNPACK_DP(B, frB); | |
1da177e4 LT |
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 | if (A_c == FP_CLS_ZERO && B_c == FP_CLS_ZERO) { | |
033b8a33 | 30 | FP_SET_EXCEPTION(EFLAG_VXZDZ); |
1da177e4 | 31 | #ifdef DEBUG |
e48b1b45 | 32 | printk("%s: FPSCR_VXZDZ raised\n", __func__); |
1da177e4 LT |
33 | #endif |
34 | } | |
35 | if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) { | |
033b8a33 | 36 | FP_SET_EXCEPTION(EFLAG_VXIDI); |
1da177e4 | 37 | #ifdef DEBUG |
e48b1b45 | 38 | printk("%s: FPSCR_VXIDI raised\n", __func__); |
1da177e4 LT |
39 | #endif |
40 | } | |
41 | ||
42 | if (B_c == FP_CLS_ZERO && A_c != FP_CLS_ZERO) { | |
033b8a33 | 43 | FP_SET_EXCEPTION(EFLAG_DIVZERO); |
1da177e4 | 44 | if (__FPU_TRAP_P(EFLAG_DIVZERO)) |
033b8a33 | 45 | return FP_CUR_EXCEPTIONS; |
1da177e4 LT |
46 | } |
47 | FP_DIV_D(R, A, B); | |
48 | ||
49 | #ifdef DEBUG | |
50 | printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); | |
51 | #endif | |
52 | ||
d2b194ed KG |
53 | __FP_PACK_D(frD, R); |
54 | ||
55 | return FP_CUR_EXCEPTIONS; | |
1da177e4 | 56 | } |