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OS_Project/Part3/09_memory/Makefile

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Makefile
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2023-10-18 18:04:33 +00:00
C_SOURCES = $(wildcard kernel/*.c drivers/*.c cpu/*.c libc/*.c)
HEADERS = $(wildcard kernel/*.h drivers/*.h cpu/*.h libc/*.h)
# Nice syntax for file extension replacement
OBJ = ${C_SOURCES:.c=.o cpu/interrupt.o}
# Change this if your cross-compiler is somewhere else
CC = /usr/bin/gcc
GDB = /usr/bin/gdb
# -g: Use debugging symbols in gcc
CFLAGS = -g -m32 -fno-pie -ffreestanding -nostdlib -nostdinc -fno-builtin -fno-stack-protector -nostartfiles -nodefaultlibs -Wall -Wextra -Werror
# First rule is run by default
os-image.bin: boot/bootsect.bin kernel.bin
cat $^ > os-image.bin
# '--oformat binary' deletes all symbols as a collateral, so we don't need
# to 'strip' them manually on this case
kernel.bin: boot/kernel_entry.o ${OBJ}
/usr/bin/ld -m elf_i386 -o $@ -Ttext 0x1000 $^ --oformat binary
# Used for debugging purposes
kernel.elf: boot/kernel_entry.o ${OBJ}
/usr/bin/ld -m elf_i386 -o $@ -Ttext 0x1000 $^
run: os-image.bin
qemu-system-i386 -vga std -drive file=$<,index=0,if=floppy,format=raw
#-s means start server at TCP:1234
curses: os-image.bin
qemu-system-i386 -curses -s -drive file=$<,index=0,if=floppy,format=raw
# qemu-system-i386 -curses -s -drive file=os-image.bin,index=0,if=floppy,format=raw -d guest_errors,int
# Open the connection to qemu and load our kernel-object file with symbols
debug: os-image.bin kernel.elf
qemu-system-i386 -s -fda os-image.bin -d guest_errors,int &
${GDB} -ex "target remote localhost:1234" -ex "symbol-file kernel.elf"
# Generic rules for wildcards
# To make an object, always compile from its .c
%.o: %.c ${HEADERS}
${CC} ${CFLAGS} -c $< -o $@
%.o: %.asm
nasm $< -f elf -o $@
%.bin: %.asm
nasm $< -f bin -o $@
clean:
rm -rf *.bin *.dis *.o os-image.bin *.elf
rm -rf kernel/*.o boot/*.bin drivers/*.o boot/*.o cpu/*.o libc/*.o