projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | fmsub(void *frD, void *frA, void *frB, void *frC) | |
| 12 | { | |
| 13 | FP_DECL_D(R); | |
| 14 | FP_DECL_D(A); | |
| 15 | FP_DECL_D(B); | |
| 16 | FP_DECL_D(C); | |
| 17 | FP_DECL_D(T); | |
| d2b194ed | 18 | FP_DECL_EX; |
| 1da177e4 LT |
19 | |
| 20 | #ifdef DEBUG | |
| e48b1b45 | 21 | printk("%s: %p %p %p %p\n", __func__, frD, frA, frB, frC); |
| 1da177e4 LT |
22 | #endif |
| 23 | ||
| d2b194ed KG |
24 | FP_UNPACK_DP(A, frA); |
| 25 | FP_UNPACK_DP(B, frB); | |
| 26 | FP_UNPACK_DP(C, frC); | |
| 1da177e4 LT |
27 | |
| 28 | #ifdef DEBUG | |
| 29 | printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); | |
| 30 | printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); | |
| 31 | printk("C: %ld %lu %lu %ld (%ld)\n", C_s, C_f1, C_f0, C_e, C_c); | |
| 32 | #endif | |
| 33 | ||
| 34 | if ((A_c == FP_CLS_INF && C_c == FP_CLS_ZERO) || | |
| 35 | (A_c == FP_CLS_ZERO && C_c == FP_CLS_INF)) | |
| 033b8a33 | 36 | FP_SET_EXCEPTION(EFLAG_VXIMZ); |
| 1da177e4 LT |
37 | |
| 38 | FP_MUL_D(T, A, C); | |
| 39 | ||
| 40 | if (B_c != FP_CLS_NAN) | |
| 41 | B_s ^= 1; | |
| 42 | ||
| 43 | if (T_s != B_s && T_c == FP_CLS_INF && B_c == FP_CLS_INF) | |
| 033b8a33 | 44 | FP_SET_EXCEPTION(EFLAG_VXISI); |
| 1da177e4 LT |
45 | |
| 46 | FP_ADD_D(R, T, B); | |
| 47 | ||
| 48 | #ifdef DEBUG | |
| 49 | printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); | |
| 50 | #endif | |
| 51 | ||
| d2b194ed KG |
52 | __FP_PACK_D(frD, R); |
| 53 | ||
| 54 | return FP_CUR_EXCEPTIONS; | |
| 1da177e4 | 55 | } |