From 1740c129b687031aac3f9383ca242d82877a3a4a Mon Sep 17 00:00:00 2001
From: Jingyun Hua <huajingyun@loongson.cn>
Date: Tue, 6 Jun 2023 12:58:28 +0000
Subject: [PATCH] Add loong64 support for runc,procfs and crc32

Signed-off-by: Jingyun Hua <huajingyun@loongson.cn>
---
 .../klauspost/crc32/crc32_generic.go          |  2 +-
 .../libcontainer/system/syscall_linux_64.go   |  2 +-
 .../github.com/prometheus/procfs/cpuinfo.go   | 36 +++++++++++++++++++
 .../prometheus/procfs/cpuinfo_loong64.go      | 19 ++++++++++
 .../libcontainer/system/syscall_linux_64.go   |  2 +-
 .../github.com/prometheus/procfs/cpuinfo.go   | 36 +++++++++++++++++++
 .../prometheus/procfs/cpuinfo_loong64.go      | 19 ++++++++++
 7 files changed, 113 insertions(+), 3 deletions(-)
 create mode 100644 cmd/vendor/github.com/prometheus/procfs/cpuinfo_loong64.go
 create mode 100644 vendor/github.com/prometheus/procfs/cpuinfo_loong64.go

diff --git a/cmd/vendor/github.com/klauspost/crc32/crc32_generic.go b/cmd/vendor/github.com/klauspost/crc32/crc32_generic.go
index d6f8f85..c4d06a2 100644
--- a/cmd/vendor/github.com/klauspost/crc32/crc32_generic.go
+++ b/cmd/vendor/github.com/klauspost/crc32/crc32_generic.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build 386 arm arm64 ppc64 ppc64le appengine
+// +build 386 arm arm64 ppc64 ppc64le appengine loong64
 
 package crc32
 
diff --git a/cmd/vendor/github.com/opencontainers/runc/libcontainer/system/syscall_linux_64.go b/cmd/vendor/github.com/opencontainers/runc/libcontainer/system/syscall_linux_64.go
index e05e30a..14d33f1 100644
--- a/cmd/vendor/github.com/opencontainers/runc/libcontainer/system/syscall_linux_64.go
+++ b/cmd/vendor/github.com/opencontainers/runc/libcontainer/system/syscall_linux_64.go
@@ -1,5 +1,5 @@
 // +build linux
-// +build arm64 amd64 mips mipsle mips64 mips64le ppc ppc64 ppc64le riscv64 s390x
+// +build arm64 amd64 mips mipsle mips64 mips64le ppc ppc64 ppc64le riscv64 s390x loong64
 
 package system
 
diff --git a/cmd/vendor/github.com/prometheus/procfs/cpuinfo.go b/cmd/vendor/github.com/prometheus/procfs/cpuinfo.go
index 31d42f7..2c2a27f 100644
--- a/cmd/vendor/github.com/prometheus/procfs/cpuinfo.go
+++ b/cmd/vendor/github.com/prometheus/procfs/cpuinfo.go
@@ -362,6 +362,42 @@ func parseCPUInfoMips(info []byte) ([]CPUInfo, error) {
 	return cpuinfo, nil
 }
 
+func parseCPUInfoLoong(info []byte) ([]CPUInfo, error) {
+	scanner := bufio.NewScanner(bytes.NewReader(info))
+	// find the first "processor" line
+	firstLine := firstNonEmptyLine(scanner)
+	if !strings.HasPrefix(firstLine, "system type") || !strings.Contains(firstLine, ":") {
+		return nil, errors.New("invalid cpuinfo file: " + firstLine)
+	}
+	field := strings.SplitN(firstLine, ": ", 2)
+	cpuinfo := []CPUInfo{}
+	systemType := field[1]
+	i := 0
+	for scanner.Scan() {
+		line := scanner.Text()
+		if !strings.Contains(line, ":") {
+			continue
+		}
+		field := strings.SplitN(line, ": ", 2)
+		switch strings.TrimSpace(field[0]) {
+		case "processor":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			i = int(v)
+			cpuinfo = append(cpuinfo, CPUInfo{}) // start of the next processor
+			cpuinfo[i].Processor = uint(v)
+			cpuinfo[i].VendorID = systemType
+		case "CPU Family":
+			cpuinfo[i].CPUFamily = field[1]
+		case "Model Name":
+			cpuinfo[i].ModelName = field[1]
+					}
+	}
+	return cpuinfo, nil
+}
+
 func parseCPUInfoPPC(info []byte) ([]CPUInfo, error) {
 	scanner := bufio.NewScanner(bytes.NewReader(info))
 
diff --git a/cmd/vendor/github.com/prometheus/procfs/cpuinfo_loong64.go b/cmd/vendor/github.com/prometheus/procfs/cpuinfo_loong64.go
new file mode 100644
index 0000000..d88442f
--- /dev/null
+++ b/cmd/vendor/github.com/prometheus/procfs/cpuinfo_loong64.go
@@ -0,0 +1,19 @@
+// Copyright 2022 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build linux
+// +build linux
+
+package procfs
+
+var parseCPUInfo = parseCPUInfoLoong
diff --git a/vendor/github.com/opencontainers/runc/libcontainer/system/syscall_linux_64.go b/vendor/github.com/opencontainers/runc/libcontainer/system/syscall_linux_64.go
index e05e30a..14d33f1 100644
--- a/vendor/github.com/opencontainers/runc/libcontainer/system/syscall_linux_64.go
+++ b/vendor/github.com/opencontainers/runc/libcontainer/system/syscall_linux_64.go
@@ -1,5 +1,5 @@
 // +build linux
-// +build arm64 amd64 mips mipsle mips64 mips64le ppc ppc64 ppc64le riscv64 s390x
+// +build arm64 amd64 mips mipsle mips64 mips64le ppc ppc64 ppc64le riscv64 s390x loong64
 
 package system
 
diff --git a/vendor/github.com/prometheus/procfs/cpuinfo.go b/vendor/github.com/prometheus/procfs/cpuinfo.go
index 31d42f7..2c2a27f 100644
--- a/vendor/github.com/prometheus/procfs/cpuinfo.go
+++ b/vendor/github.com/prometheus/procfs/cpuinfo.go
@@ -362,6 +362,42 @@ func parseCPUInfoMips(info []byte) ([]CPUInfo, error) {
 	return cpuinfo, nil
 }
 
+func parseCPUInfoLoong(info []byte) ([]CPUInfo, error) {
+	scanner := bufio.NewScanner(bytes.NewReader(info))
+	// find the first "processor" line
+	firstLine := firstNonEmptyLine(scanner)
+	if !strings.HasPrefix(firstLine, "system type") || !strings.Contains(firstLine, ":") {
+		return nil, errors.New("invalid cpuinfo file: " + firstLine)
+	}
+	field := strings.SplitN(firstLine, ": ", 2)
+	cpuinfo := []CPUInfo{}
+	systemType := field[1]
+	i := 0
+	for scanner.Scan() {
+		line := scanner.Text()
+		if !strings.Contains(line, ":") {
+			continue
+		}
+		field := strings.SplitN(line, ": ", 2)
+		switch strings.TrimSpace(field[0]) {
+		case "processor":
+			v, err := strconv.ParseUint(field[1], 0, 32)
+			if err != nil {
+				return nil, err
+			}
+			i = int(v)
+			cpuinfo = append(cpuinfo, CPUInfo{}) // start of the next processor
+			cpuinfo[i].Processor = uint(v)
+			cpuinfo[i].VendorID = systemType
+		case "CPU Family":
+			cpuinfo[i].CPUFamily = field[1]
+		case "Model Name":
+			cpuinfo[i].ModelName = field[1]
+					}
+	}
+	return cpuinfo, nil
+}
+
 func parseCPUInfoPPC(info []byte) ([]CPUInfo, error) {
 	scanner := bufio.NewScanner(bytes.NewReader(info))
 
diff --git a/vendor/github.com/prometheus/procfs/cpuinfo_loong64.go b/vendor/github.com/prometheus/procfs/cpuinfo_loong64.go
new file mode 100644
index 0000000..d88442f
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/cpuinfo_loong64.go
@@ -0,0 +1,19 @@
+// Copyright 2022 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build linux
+// +build linux
+
+package procfs
+
+var parseCPUInfo = parseCPUInfoLoong
-- 
2.33.0