Split up boot.s into multiple assembly definitions, Started page frame allocator implementation, kterm definition is now considered c plus plus

Makefile

@@ -5,7 +5,7 @@ CC = ${HOME}/opt/cross/bin/i686-elf-gcc
 CPP = ${HOME}/opt/cross/bin/i686-elf-g++ 
 CFLAGS =  -ffreestanding -O2 -Wall -Wextra
 
-OFILES =	$(BUILD_DIR)/boot.o $(BUILD_DIR)/kterm.o $(BUILD_DIR)/kernel.o  $(BUILD_DIR)/PageFrameAllocator.o $(BUILD_DIR)/io.o $(BUILD_DIR)/PageDirectory.o $(BUILD_DIR)/idt.o $(BUILD_DIR)/pic.o $(BUILD_DIR)/string.o
+OFILES =	$(BUILD_DIR)/boot.o $(BUILD_DIR)/kterm.o $(BUILD_DIR)/kernel.o $(BUILD_DIR)/io.o $(BUILD_DIR)/PageFrameAllocator.o $(BUILD_DIR)/PageDirectory.o $(BUILD_DIR)/idt.o $(BUILD_DIR)/pic.o $(BUILD_DIR)/string.o
 
 SRC_DIR = src
 BUILD_DIR = build

src/kernel/arch/i386/tty/kterm.cpp

@@ -202,8 +202,10 @@ void printf ( const char *format, ...) {
             switch (c)
             {
             case 'd':
-             
+                kterm_writestring("Not implemented!!");
+                break;
             case 'u':
+                break;
             case 'x':
                 itoa(buf, c, *((int *) arg++));