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> | |
| 9 | #include <math-emu/single.h> | |
| 1da177e4 LT |
10 | |
| 11 | int | |
| 12 | fdivs(void *frD, void *frA, void *frB) | |
| 13 | { | |
| 14 | FP_DECL_D(A); | |
| 15 | FP_DECL_D(B); | |
| 16 | FP_DECL_D(R); | |
| d2b194ed | 17 | FP_DECL_EX; |
| 1da177e4 LT |
18 | |
| 19 | #ifdef DEBUG | |
| e48b1b45 | 20 | printk("%s: %p %p %p\n", __func__, frD, frA, frB); |
| 1da177e4 LT |
21 | #endif |
| 22 | ||
| d2b194ed KG |
23 | FP_UNPACK_DP(A, frA); |
| 24 | FP_UNPACK_DP(B, frB); | |
| 1da177e4 LT |
25 | |
| 26 | #ifdef DEBUG | |
| 27 | printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); | |
| 28 | printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); | |
| 29 | #endif | |
| 30 | ||
| 31 | if (A_c == FP_CLS_ZERO && B_c == FP_CLS_ZERO) { | |
| 033b8a33 | 32 | FP_SET_EXCEPTION(EFLAG_VXZDZ); |
| 1da177e4 | 33 | #ifdef DEBUG |
| e48b1b45 | 34 | printk("%s: FPSCR_VXZDZ raised\n", __func__); |
| 1da177e4 LT |
35 | #endif |
| 36 | } | |
| 37 | if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) { | |
| 033b8a33 | 38 | FP_SET_EXCEPTION(EFLAG_VXIDI); |
| 1da177e4 | 39 | #ifdef DEBUG |
| e48b1b45 | 40 | printk("%s: FPSCR_VXIDI raised\n", __func__); |
| 1da177e4 LT |
41 | #endif |
| 42 | } | |
| 43 | ||
| 44 | if (B_c == FP_CLS_ZERO && A_c != FP_CLS_ZERO) { | |
| 033b8a33 | 45 | FP_SET_EXCEPTION(EFLAG_DIVZERO); |
| 1da177e4 | 46 | if (__FPU_TRAP_P(EFLAG_DIVZERO)) |
| 033b8a33 | 47 | return FP_CUR_EXCEPTIONS; |
| 1da177e4 LT |
48 | } |
| 49 | ||
| 50 | FP_DIV_D(R, A, B); | |
| 51 | ||
| 52 | #ifdef DEBUG | |
| 53 | printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); | |
| 54 | #endif | |
| 55 | ||
| d2b194ed KG |
56 | __FP_PACK_DS(frD, R); |
| 57 | ||
| 58 | return FP_CUR_EXCEPTIONS; | |
| 1da177e4 | 59 | } |