patch add mini backtrace (#416)

* support rust panic backtrace

mini-backtrace has llvm's unwind cpp source to support backtrace/unwind.
as unwind/backtrace needs dynamically allocates memory, mini-backtrace
uses stack memory to capture fixed number of backtrace to avoid heap
allocation.
as unwind library needed, it needs to turn on eh_frame_hdr

* 修改忘了生成kernel.elf的问题

* 设置backtrace是默认的feature

---------

Co-authored-by: Yao Zhao <dragonlinux@gmail.com>

tools/bootstrap.sh

@@ -64,6 +64,21 @@ install_ubuntu_debian_pkg()
 
 }
 
+install_archlinux_pkg()
+{
+    pkgman="pacman"
+    echo "检测到 ArchLinux"
+    echo "正在更新包管理器的列表..."
+    sudo "${pkgman}" -Sy
+    echo "正在安装所需的包..."
+    sudo "${pkgman}" -S --needed --noconfirm \
+	curl wget bridge-utils dnsmasq \
+        diffutils pkgconf which unzip util-linux dosfstools \
+        gcc make flex texinfo gmp mpfr qemu-base \
+        libmpc libssl-dev
+
+}
+
 install_osx_pkg()
 {
     echo "Detected OSX! 暂不支持Mac OSX的一键安装！"
@@ -194,7 +209,7 @@ else
 		solus "$emulator" || exit 1
 	# Arch linux
 	elif hash 2>/dev/null pacman; then
-		archLinux "$emulator" || exit 1
+		install_archlinux_pkg || exit 1
 	# FreeBSD
 	elif hash 2>/dev/null pkg; then
 		freebsd "$emulator" || exit 1
@@ -221,4 +236,4 @@ USR=$USER
 sudo adduser $USR kvm
 sudo chown $USR /dev/kvm
 
-congratulations
+congratulations