From 30b17b6f604e30327df7ea800711526201d19aff Mon Sep 17 00:00:00 2001
From: Xiaodong Liu <liuxiaodong@loongson.cn>
Date: Mon, 15 Nov 2021 20:53:47 +0800
Subject: [PATCH] internal/{cpu, goarch}: add constant definition for loong64

Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I39d42e5959391e47bf621b3bdd3d95de72f023cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/342318
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
---
 src/internal/cpu/cpu_loong64.go       | 11 +++++++++++
 src/internal/goarch/goarch.go         |  1 +
 src/internal/goarch/goarch_loong64.go | 15 +++++++++++++++
 3 files changed, 27 insertions(+)
 create mode 100644 src/internal/cpu/cpu_loong64.go
 create mode 100644 src/internal/goarch/goarch_loong64.go

diff --git a/src/internal/cpu/cpu_loong64.go b/src/internal/cpu/cpu_loong64.go
new file mode 100644
index 0000000000..d8403d731a
--- /dev/null
+++ b/src/internal/cpu/cpu_loong64.go
@@ -0,0 +1,11 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build loong64
+
+package cpu
+
+const CacheLinePadSize = 32
+
+func doinit() {}
diff --git a/src/internal/goarch/goarch.go b/src/internal/goarch/goarch.go
index e8de67b01b..3dda62fadc 100644
--- a/src/internal/goarch/goarch.go
+++ b/src/internal/goarch/goarch.go
@@ -19,6 +19,7 @@ const (
 	ARM
 	ARM64
 	I386
+	LOONG64
 	MIPS
 	MIPS64
 	PPC64
diff --git a/src/internal/goarch/goarch_loong64.go b/src/internal/goarch/goarch_loong64.go
new file mode 100644
index 0000000000..dae1f4da31
--- /dev/null
+++ b/src/internal/goarch/goarch_loong64.go
@@ -0,0 +1,15 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build loong64
+
+package goarch
+
+const (
+	_ArchFamily          = LOONG64
+	_DefaultPhysPageSize = 16384
+	_PCQuantum           = 4
+	_MinFrameSize        = 8
+	_StackAlign          = PtrSize
+)
-- 
2.50.0