Adapt Makefile, modify some comments

kernel/Makefile

@@ -1,5 +1,12 @@
-kernel.bin:
-	touch kernel.bin
+
+kernel.bin:entry.o main.o
+	ld -m elf_i386 --entry=_start -Ttext=0x1000 -o $@ $^
+
+entry.o:entry.asm
+	nasm -f elf $^
+main.o:main.c
+	gcc -m32 -c $^ -o $@
 
 clean:
+	rm ./*.o
 	rm kernel.bin

kernel/entry.asm

@@ -1,14 +1,14 @@
 [BITS 32]
 
-;Define extern symbole
+;Define extern symbol
 extern main
 
-;Define global symbole
+;Define entry point as global for linking
 global _start
 
 ;Define kernel entry point
 _start:
-	jmp begin ;Go to begin and run main kernel function
+	jmp begin ;Go to begin (for skip Multiboot Specification Header)
 
 
 ;----- Multiboot Specification Header -----
@@ -20,5 +20,5 @@ dd 0x1BADB002
 
 
 begin:
-	call main ;Run main function
+	call main ;Start kernel
 

kernel/main.c

@@ -1,4 +1,7 @@
 
+
+//----- PiegOS kernel main -----
+
 void main(){
 
 	while(1);