1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*
* QEMU RISC-V CPU -- internal functions and types
*
* Copyright (c) 2020 T-Head Semiconductor Co., Ltd. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef RISCV_CPU_INTERNALS_H
#define RISCV_CPU_INTERNALS_H
#include "hw/registerfields.h"
/* share data between vector helpers and decode code */
FIELD(VDATA, MLEN, 0, 8)
FIELD(VDATA, VM, 8, 1)
FIELD(VDATA, LMUL, 9, 2)
FIELD(VDATA, NF, 11, 4)
FIELD(VDATA, WD, 11, 1)
/* float point classify helpers */
target_ulong fclass_h(uint64_t frs1);
target_ulong fclass_s(uint64_t frs1);
target_ulong fclass_d(uint64_t frs1);
#define SEW8 0
#define SEW16 1
#define SEW32 2
#define SEW64 3
static inline uint64_t nanbox_s(float32 f)
{
return f | MAKE_64BIT_MASK(32, 32);
}
static inline float32 check_nanbox_s(uint64_t f)
{
uint64_t mask = MAKE_64BIT_MASK(32, 32);
if (likely((f & mask) == mask)) {
return (uint32_t)f;
} else {
return 0x7fc00000u; /* default qnan */
}
}
#endif
|
