a geicko-2 based round robin ranking system designed to test c++ battleship submissions
battleship.dunkirk.sh
dunkirk.sh
1// Copyright 2022 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build loong64
6
7package cpu
8
9const cacheLineSize = 64
10
11// Bit fields for CPUCFG registers, Related reference documents:
12// https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#_cpucfg
13const (
14 // CPUCFG1 bits
15 cpucfg1_CRC32 = 1 << 25
16
17 // CPUCFG2 bits
18 cpucfg2_LAM_BH = 1 << 27
19 cpucfg2_LAMCAS = 1 << 28
20)
21
22func initOptions() {
23 options = []option{
24 {Name: "lsx", Feature: &Loong64.HasLSX},
25 {Name: "lasx", Feature: &Loong64.HasLASX},
26 {Name: "crc32", Feature: &Loong64.HasCRC32},
27 {Name: "lam_bh", Feature: &Loong64.HasLAM_BH},
28 {Name: "lamcas", Feature: &Loong64.HasLAMCAS},
29 }
30
31 // The CPUCFG data on Loong64 only reflects the hardware capabilities,
32 // not the kernel support status, so features such as LSX and LASX that
33 // require kernel support cannot be obtained from the CPUCFG data.
34 //
35 // These features only require hardware capability support and do not
36 // require kernel specific support, so they can be obtained directly
37 // through CPUCFG
38 cfg1 := get_cpucfg(1)
39 cfg2 := get_cpucfg(2)
40
41 Loong64.HasCRC32 = cfgIsSet(cfg1, cpucfg1_CRC32)
42 Loong64.HasLAMCAS = cfgIsSet(cfg2, cpucfg2_LAMCAS)
43 Loong64.HasLAM_BH = cfgIsSet(cfg2, cpucfg2_LAM_BH)
44}
45
46func get_cpucfg(reg uint32) uint32
47
48func cfgIsSet(cfg uint32, val uint32) bool {
49 return cfg&val != 0
50}