reboot syscall and shell cmd using ps2 controller

include/kernel/ps2.h

@@ -5,6 +5,8 @@
 #define PS2_8042_STATUS  0x64
 #define PS2_8042_COMMAND 0x64
 
+#define ps2_reboot outb(0x64, 0xFE)
+
 // SCANCODES
 #define KBD_ESC 0x01
 #define KBD_1 0x02

kernel/init.asm

@@ -279,10 +279,12 @@ boot_page_tab: times 1024 dd 0
 
 extern syscall_read
 extern syscall_write
+extern syscall_reboot
 global syscall_table
 syscall_table:
     dd syscall_read
     dd syscall_write
+    dd syscall_reboot
 
 section .bss
 align 16

kernel/kernel.c

@@ -44,6 +44,7 @@ void syscall_read(stack_frame_t r) {
     if (fd == FD_STDOUT) {
         // Not yet
     } else if (fd == FD_STDIN) {
+        // for some reason interrupts are disabled
         asm volatile ("sti" ::);
         while (ctx.current_task->stdin[ctx.current_task->stdin_len - 1] != '\n') cpu_relax;
         if (ctx.current_task->stdin_len > 0) ctx.current_task->stdin[--ctx.current_task->stdin_len] = 0;
@@ -53,6 +54,11 @@ void syscall_read(stack_frame_t r) {
     }
 }
 
+void syscall_reboot(stack_frame_t r) { 
+    (void)r;
+    ps2_reboot;
+}
+
 void syscall_uptime(stack_frame_t r) {
     uint64_t *buf = (uint64_t *)r.esi;
     *buf = ctx.ticks;
@@ -191,7 +197,6 @@ void kernel(multiboot_info_t *info) {
             : "eax", "ecx", "edx"
             );
 
-
     LOG("Switching to ring 3... EIP: 0x%08X ESP: 0x%08X\n", task.eip, task.esp);
     jmp_user_mode(task.esp, task.eip); 
 

kernel/pic.c

@@ -26,6 +26,6 @@ void pic_remap(int pic1_start, int pic2_start) {
     outb(PIC_2_DATA, 0x01);
 
     // Unmask
-    outb(PIC_1_DATA, 0b11111101);
-    outb(PIC_2_DATA, 0b11111101);
+    outb(PIC_1_DATA, 0b11111100);
+    outb(PIC_2_DATA, 0b11111100);
 }

user/shell.c

@@ -22,6 +22,16 @@ void read(int fd, void *buf, int size) {
 	    );
 }
 
+void reboot() {
+    asm volatile (
+	    "movl $2, %%eax\n\t"
+	    "int $0x80"
+	    : 
+	    : 
+	    : "eax"
+	    );
+}
+
 extern char *buf;
 
 void _start() {
@@ -32,7 +42,10 @@ void _start() {
 	read(0, buf1, 256);
         if (!strcmp(buf1, "SKIBIDI")) {
             puts("dop dop yes yes!\n");
-	} else {
+        } else if (!strcmp(buf1, "REBOOT")) {
+            reboot();
+        }
+        else {
             puts("unknown command!\n");
         }
     }