move arch include dir

kernel-src/Makefile

@@ -3,11 +3,12 @@ ASMSOURCES= $(shell find -name *.asm)
 OBJS=$(CSOURCES:.c=.o) $(ASMSOURCES:.asm=.asmo)
 TARGET=x86-64
 INCDIR=$(shell pwd)/include
+ARCHINCDIR=$(shell pwd)/include/$(TARGET)/
 ARCHDIR=$(shell pwd)/arch/$(TARGET)/
 LDFLAGS=-ffreestanding -nostdlib -lgcc -Wl,-T,"$(ARCHDIR)/kernel.ld" -debug
 # required for mpaland printf so it doesn't compile with floating point support, which results in build failures
 PRINTFOPTS=-DPRINTF_DISABLE_SUPPORT_FLOAT
-CFLAGS=-ffreestanding -mcmodel=kernel -O2 -mno-red-zone -mno-mmx -mno-sse -mno-sse2 -nostdlib -Wall -I "${INCDIR}" $(PRINTFOPTS)
+CFLAGS=-ffreestanding -mcmodel=kernel -O2 -mno-red-zone -mno-mmx -mno-sse -mno-sse2 -nostdlib -Wall -I "${INCDIR}" -I "$(ARCHINCDIR)" $(PRINTFOPTS)
 ASFLAGS=-felf64
 
 astral:	$(OBJS)

kernel-src/arch/x86-64/main.c

@@ -1,6 +1,7 @@
 #include <arch/e9.h>
 #include <logging.h>
 #include <arch/cpu.h>
+#include <arch/gdt.h>
 
 static cpu_t bsp_cpu;
 

kernel-src/include/x86-64/arch/gdt.h

@@ -0,0 +1,6 @@
+#ifndef _GDT_H
+#define _GDT_H
+
+void arch_gdt_reload();
+
+#endif