add strlen, unused----

Makescript

@@ -2,7 +2,7 @@
 
 OBJ="obj"
 INCLUDE="-Isys/include"
-CFLAGS="-g -m32 -ffreestanding -Wall -Wextra -pedantic -nostdlib $INCLUDE"
+CFLAGS="-m32 -ffreestanding -Wall -Wextra -pedantic -nostdlib $INCLUDE"
 ASFLAGS="-felf32"
 LDFLAGS="-m elf_i386"
 

sys/Makescript

@@ -1,4 +1,5 @@
 echo "Kernel Build"
 
+cc $CFLAGS -c sys/lib.c -o $OBJ/lib.o
 cc $CFLAGS -c sys/video.c -o $OBJ/video.o
 cc $CFLAGS -c sys/sysinit.c -o $OBJ/sysinit.o

sys/include/fcntl.h

@@ -0,0 +1,9 @@
+#ifndef FCNTL_H
+#define FCNTL_H
+
+#define O_RDONLY	0x0000
+#define O_WRONLY	0x0010
+#define O_RDWR		0x0020
+#define O_CREAT		0x0200
+
+#endif

sys/include/memory.h

@@ -1,8 +1,11 @@
-8 ifndef MEMORY_H
+#ifndef MEMORY_H
 #define MEMORY_H
 
 #include <types.h>
 
+#define EXTMEMBOT	0x100000
+#define PHYSMEMTOP	0x0e000000
+
 
 /*
  * Each allocated memory is stored internally like this:

sys/include/param.h

@@ -0,0 +1,2 @@
+#define NDEV	10
+#define ROOTDEV	0

sys/lib.c

@@ -0,0 +1,12 @@
+#include <types.h>
+
+u32
+strlen(const char *str)
+{
+	size_t i;
+
+	for (i = 0; str[i] != NULL; i++)
+		;
+
+	return i;
+}

sys/sysinit.c

@@ -3,12 +3,8 @@
 void
 sysinit(void)
 {
+	char *howdy = "Om Smart";
+
 	vga_clearscreen();
-	vga_write("Om Smert.", 9, 0x0F);
-	vga_write("Om Smarter.", 11, 0x0F);
-	for (s16 i = 0; i < 99; i++) {
-		vga_write("Om Smart.", 9, 0x0F);
-		vga_write("Om Smarter.", 11, 0x0F);
-	} 
-	vga_write("fish stick", 10, 0x07);
+	vga_write(howdy, strlen(howdy), 0x1f);
 }

sys/video.c

@@ -21,6 +21,8 @@ vga_write(s8 *sequence, s16 size, s8 flags)
 		for (s16 i = 0; i <= (unused = VGA_SIZE - needed_space); i++) {
 			vga_vidmem[i] = vga_vidmem[needed_space + i];
 		} 
+		unused--;
+		unused--;
 	} 
 
 	for (s16 i = 0; i < size; i++) {