Moved source to kernel directory

3 files changed, 43 insertions, 0 deletions

diff --git a/src/kernel/io/io.asm b/src/kernel/io/io.asm
new file mode 100644
index 0000000..6ab3707
--- /dev/null
+++ b/src/kernel/io/io.asm
@@ -0,0 +1,10 @@
+global shutdown
+shutdown:
+  mov ax, 0x1000
+  mov ax, ss
+  mov sp, 0xf000
+  mov ax, 0x5307
+  mov bx, 0x0001
+  mov cx, 0x0003
+  int 0x15
+  ret
\ No newline at end of file
diff --git a/src/kernel/io/io.c b/src/kernel/io/io.c
new file mode 100644
index 0000000..7bddb13
--- /dev/null
+++ b/src/kernel/io/io.c
@@ -0,0 +1,21 @@
+#include <stdint.h>
+
+unsigned char receive(unsigned short port) {
+    unsigned char value;
+    __asm__ __volatile__ ("inb %1, %0" : "=a" (value) : "dN" (port));
+    return value;
+}
+
+void send(unsigned short port, unsigned char data) {
+    __asm__ __volatile__ ("outb %1, %0" : : "dN" (port), "a" (data));
+}
+
+void reboot() {
+    uint8_t good = 0x02;
+    while (good & 0x02)
+        good = receive(0x64);
+    send(0x64, 0xFE);
+    loop:
+    asm volatile ("hlt");
+    goto loop;
+}
\ No newline at end of file
diff --git a/src/kernel/io/io.h b/src/kernel/io/io.h
new file mode 100644
index 0000000..e00a5f0
--- /dev/null
+++ b/src/kernel/io/io.h
@@ -0,0 +1,12 @@
+#ifndef MELVIX_IO_H
+#define MELVIX_IO_H
+
+#include <stdint.h>
+
+unsigned char receive(unsigned short port);
+
+void send(unsigned short port, unsigned char data);
+
+void reboot();
+
+#endif