From 8bd7b64a0bac01375058d0d236b24b65a8a07709 Mon Sep 17 00:00:00 2001
From: fslongjin <fslongjin@vip.qq.com>
Date: Wed, 25 May 2022 14:38:15 +0800
Subject: [PATCH] =?UTF-8?q?:new:=20=E5=A2=9E=E5=8A=A0=E9=87=8D=E5=90=AF?=
 =?UTF-8?q?=E5=91=BD=E4=BB=A4reboot?=
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---
 kernel/syscall/syscall.c      | 16 +++++++++++++++-
 kernel/syscall/syscall_num.h  |  1 +
 user/apps/shell/cmd.c         |  6 +++++-
 user/libs/libsystem/syscall.h |  1 +
 4 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/kernel/syscall/syscall.c b/kernel/syscall/syscall.c
index baeb638a8..bf2536981 100644
--- a/kernel/syscall/syscall.c
+++ b/kernel/syscall/syscall.c
@@ -442,6 +442,19 @@ uint64_t sys_sbrk(struct pt_regs *regs)
     return retval;
 }
 
+/**
+ * @brief 重启计算机
+ *
+ * @return 
+ */
+uint64_t sys_reboot(struct pt_regs *regs)
+{
+    // 重启计算机
+    io_out8(0x64, 0xfe);
+
+    return 0;
+}
+
 ul sys_ahci_end_req(struct pt_regs *regs)
 {
     ahci_end_request();
@@ -469,5 +482,6 @@ system_call_t system_call_table[MAX_SYSTEM_CALL_NUM] =
         [8] = sys_vfork,
         [9] = sys_brk,
         [10] = sys_sbrk,
-        [11 ... 254] = system_call_not_exists,
+        [11] = sys_reboot,
+        [12 ... 254] = system_call_not_exists,
         [255] = sys_ahci_end_req};
diff --git a/kernel/syscall/syscall_num.h b/kernel/syscall/syscall_num.h
index 9e4f7eb17..13a180f59 100644
--- a/kernel/syscall/syscall_num.h
+++ b/kernel/syscall/syscall_num.h
@@ -20,5 +20,6 @@
 #define SYS_VFORK 8
 #define SYS_BRK 9
 #define SYS_SBRK 10
+#define SYS_REBOOT 11   // 重启
 
 #define SYS_AHCI_END_REQ 255    // AHCI DMA请求结束end_request的系统调用
\ No newline at end of file
diff --git a/user/apps/shell/cmd.c b/user/apps/shell/cmd.c
index 7c0ee9516..dee576609 100644
--- a/user/apps/shell/cmd.c
+++ b/user/apps/shell/cmd.c
@@ -2,6 +2,7 @@
 #include <libc/string.h>
 #include <libc/stdio.h>
 #include <libc/stddef.h>
+#include <libsystem/syscall.h>
 
 // 当前工作目录（在main_loop中初始化）
 char *shell_current_path = NULL;
@@ -163,4 +164,7 @@ int shell_cmd_exec(int argc, char **argv) {}
  * @return int
  */
 // todo:
-int shell_cmd_reboot(int argc, char **argv) {}
\ No newline at end of file
+int shell_cmd_reboot(int argc, char **argv)
+{
+    return syscall_invoke(SYS_REBOOT, 0, 0, 0, 0, 0, 0, 0, 0);
+}
\ No newline at end of file
diff --git a/user/libs/libsystem/syscall.h b/user/libs/libsystem/syscall.h
index 51ffed683..75253ce22 100644
--- a/user/libs/libsystem/syscall.h
+++ b/user/libs/libsystem/syscall.h
@@ -14,6 +14,7 @@
 #define SYS_VFORK 8
 #define SYS_BRK 9
 #define SYS_SBRK 10
+#define SYS_REBOOT 11
 
 /**
  * @brief 用户态系统调用函数