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43 lines
1.3 KiB
43 lines
1.3 KiB
# Used to generated .d file that deal with header dependencies
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CPPFLAGS = -MMD
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AS=nasm
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ASFLAGS += -f elf32
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LDFLAGS += -m32 -nostdlib -static -fno-common -fno-use-cxa-atexit -fno-exceptions -fno-non-call-exceptions -fno-weak -fno-rtti -fno-stack-protector
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CFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-pie -fno-stack-protector
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CXXFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-rtti -fno-pie
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SUBDIRS := core drivers
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CPPFLAGS += $(foreach dir, $(SUBDIRS), -I$(dir))
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asmsrc=$(wildcard *.asm)
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asmobj=$(asmsrc:%.asm=%.o)
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csrc=$(shell find $(SUBDIRS) -type f -name "*.c")# $(wildcard *.c)
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cobj=$(csrc:%.c=%.o)
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deps = $(csrc:%.c=%.d)
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kernel:$(asmobj) $(cobj) linker.ld
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$(CXX) $(LDFLAGS) $(cobj) $(asmobj) -o $@ -T linker.ld
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fd.img: kernel
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dd if=/dev/zero of=$@ bs=512 count=2880
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dd if=$< of=$@ conv=notrunc
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#https://gcc.gnu.org/onlinedocs/gcc/x86-Function-Attributes.html#x86-Function-Attributes
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core/exception_handler.o:core/exception_handler.c
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$(CC) $(CPPFLAGS) $(CFLAGS) -mgeneral-regs-only -c $< -o $@
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core/irq_handler.o:core/irq_handler.c
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$(CC) $(CPPFLAGS) $(CFLAGS) -mgeneral-regs-only -c $< -o $@
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%.o:%.asm
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$(AS) $(ASFLAGS) -o $@ $<
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test:kernel
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qemu-system-x86_64 -fda $<
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clean:
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$(RM) kernel $(asmobj) $(cobj) $(deps)
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ifneq ($(MAKECMDGOALS),clean)
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-include $(deps)
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endif
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