From 32e948a5931f56c1816bea9fb47f1242d68207bb Mon Sep 17 00:00:00 2001
From: bLueriVerLHR <lhrblueriver@outlook.com>
Date: Thu, 20 Jul 2023 17:47:07 +0800
Subject: [PATCH] [Add] import xv6-riscv and submodules

---
 .gitmodules           |  9 +++++++++
 Makefile              | 26 ++++++++++++++++++++++++++
 lasoft/la32r-nemu     |  1 +
 loongarch64-linux-gnu |  1 +
 nscscc-team-la32r     |  1 +
 5 files changed, 38 insertions(+)
 create mode 100644 .gitmodules
 create mode 100644 Makefile
 create mode 160000 lasoft/la32r-nemu
 create mode 160000 loongarch64-linux-gnu
 create mode 160000 nscscc-team-la32r

diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f0ca3ed
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,9 @@
+[submodule "loongarch64-linux-gnu"]
+	path = loongarch64-linux-gnu
+	url = https://gitee.com/loongarch_community/loongarch64-linux-gnu
+[submodule "nscscc-team-la32r"]
+	path = nscscc-team-la32r
+	url = https://gitee.com/loongson-edu/nscscc-team-la32r
+[submodule "lasoft/la32r-nemu"]
+	path = lasoft/la32r-nemu
+	url = https://gitee.com/wwt_panache/la32r-nemu
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..6b7ca56
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,26 @@
+# prepare loongarch toolchain
+
+TOOLCHAIN_PK	:= loongarch64-linux-gnu/toolchain-loongarch64-linux-gnu-gcc8-host-x86_64-2022-07-18.tar.xz
+
+LA_PATH			:= ext/toolchain-loongarch64-linux-gnu-gcc8-host-x86_64-2022-07-18/bin
+LA_ARCH			:= loongarch64-linux-gnu-
+LA				:= $(LA_PATH)/$(LA_ARCH)
+
+GCC				:= $(LA)gcc
+OD				:= $(LA)objdump
+OC				:= $(LA)objcopy
+RE				:= $(LA)readelf
+
+LA_TOOLS		:= $(GCC) $(OD) $(OC) $(RE)
+
+$(TOOLCHAIN_PK):
+	git submodule update --init
+
+unpk-gcc: $(TOOLCHAIN_PK)
+	mkdir -p ext
+	tar -xvf $(TOOLCHAIN_PK) -C ext
+
+$(LA_TOOLS): unpk-gcc
+
+# prepare loongarch source code
+
diff --git a/lasoft/la32r-nemu b/lasoft/la32r-nemu
new file mode 160000
index 0000000..993f212
--- /dev/null
+++ b/lasoft/la32r-nemu
@@ -0,0 +1 @@
+Subproject commit 993f212e0fda029c9b587fac47b5626cfe5cd9e4
diff --git a/loongarch64-linux-gnu b/loongarch64-linux-gnu
new file mode 160000
index 0000000..f535a6f
--- /dev/null
+++ b/loongarch64-linux-gnu
@@ -0,0 +1 @@
+Subproject commit f535a6f47e8837dc3a5fea74a1d49a9aa1bad393
diff --git a/nscscc-team-la32r b/nscscc-team-la32r
new file mode 160000
index 0000000..0ef5a87
--- /dev/null
+++ b/nscscc-team-la32r
@@ -0,0 +1 @@
+Subproject commit 0ef5a87bed530b261aa8b362ba1201753dd252b4