Added Makefile.gcc to part13

part13-interrupts/Makefile.gcc

@@ -0,0 +1,20 @@
+CFILES = $(wildcard *.c lib/*.c kernel/*.c)
+SFILES = $(wildcard boot/*.S lib/*.S kernel/*.S)
+OFILES = $(CFILES:.c=.o) $(SFILES:.S=.o)
+GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
+GCCPATH = ../../gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf/bin
+
+all: clean kernel8.img
+
+%.o: %.c
+	$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
+
+%.o: %.S
+	$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
+
+kernel8.img: $(OFILES)
+	$(GCCPATH)/aarch64-none-elf-ld -nostdlib $(OFILES) -T boot/link.ld -o kernel8.elf
+	$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
+
+clean:
+	/bin/rm kernel8.elf */*.o *.img > /dev/null 2> /dev/null || true

part13-interrupts/boot/boot.S

@@ -87,22 +87,22 @@ el1_entry:
 
 .ltorg
 
-.org 0x100
+.org 0x110
 .globl spin_cpu0
 spin_cpu0:
         .quad 0
 
-.org 0x108
+.org 0x118
 .globl spin_cpu1
 spin_cpu1:
         .quad 0
 
-.org 0x110
+.org 0x120
 .globl spin_cpu2
 spin_cpu2:
         .quad 0
 
-.org 0x118
+.org 0x128
 .globl spin_cpu3
 spin_cpu3:
         .quad 0