173 lines
4.5 KiB
Makefile
173 lines
4.5 KiB
Makefile
K=kernel
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U=user
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OBJS = \
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$K/entry.o \
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$K/start.o \
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$K/console.o \
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$K/printf.o \
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$K/uart.o \
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$K/kalloc.o \
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$K/spinlock.o \
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$K/string.o \
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$K/main.o \
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$K/vm.o \
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$K/proc.o \
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$K/swtch.o \
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$K/trampoline.o \
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$K/trap.o \
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$K/syscall.o \
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$K/sysproc.o \
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$K/bio.o \
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$K/fs.o \
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$K/log.o \
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$K/sleeplock.o \
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$K/file.o \
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$K/pipe.o \
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$K/exec.o \
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$K/sysfile.o \
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$K/kernelvec.o \
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$K/plic.o \
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$K/virtio_disk.o
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# riscv64-unknown-elf- or riscv64-linux-gnu-
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# perhaps in /opt/riscv/bin
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#TOOLPREFIX =
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# Try to infer the correct TOOLPREFIX if not set
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ifndef TOOLPREFIX
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TOOLPREFIX := $(shell if riscv64-unknown-elf-objdump -i 2>&1 | grep 'elf64-big' >/dev/null 2>&1; \
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then echo 'riscv64-unknown-elf-'; \
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elif riscv64-linux-gnu-objdump -i 2>&1 | grep 'elf64-big' >/dev/null 2>&1; \
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then echo 'riscv64-linux-gnu-'; \
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elif riscv64-unknown-linux-gnu-objdump -i 2>&1 | grep 'elf64-big' >/dev/null 2>&1; \
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then echo 'riscv64-unknown-linux-gnu-'; \
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else echo "***" 1>&2; \
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echo "*** Error: Couldn't find a riscv64 version of GCC/binutils." 1>&2; \
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echo "*** To turn off this error, run 'gmake TOOLPREFIX= ...'." 1>&2; \
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echo "***" 1>&2; exit 1; fi)
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endif
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QEMU = qemu-system-riscv64
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CC = $(TOOLPREFIX)gcc
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AS = $(TOOLPREFIX)gas
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LD = $(TOOLPREFIX)ld
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OBJCOPY = $(TOOLPREFIX)objcopy
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OBJDUMP = $(TOOLPREFIX)objdump
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CFLAGS = -Wall -Werror -O -fno-omit-frame-pointer -ggdb
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CFLAGS += -MD
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CFLAGS += -mcmodel=medany
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CFLAGS += -ffreestanding -fno-common -nostdlib -mno-relax
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CFLAGS += -I.
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CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
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# Disable PIE when possible (for Ubuntu 16.10 toolchain)
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ifneq ($(shell $(CC) -dumpspecs 2>/dev/null | grep -e '[^f]no-pie'),)
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CFLAGS += -fno-pie -no-pie
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endif
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ifneq ($(shell $(CC) -dumpspecs 2>/dev/null | grep -e '[^f]nopie'),)
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CFLAGS += -fno-pie -nopie
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endif
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LDFLAGS = -z max-page-size=4096
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$K/kernel: $(OBJS) $K/kernel.ld $U/initcode
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$(LD) $(LDFLAGS) -T $K/kernel.ld -o $K/kernel $(OBJS)
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$(OBJDUMP) -S $K/kernel > $K/kernel.asm
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$(OBJDUMP) -t $K/kernel | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > $K/kernel.sym
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$U/initcode: $U/initcode.S
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$(CC) $(CFLAGS) -march=rv64g -nostdinc -I. -Ikernel -c $U/initcode.S -o $U/initcode.o
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$(LD) $(LDFLAGS) -N -e start -Ttext 0 -o $U/initcode.out $U/initcode.o
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$(OBJCOPY) -S -O binary $U/initcode.out $U/initcode
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$(OBJDUMP) -S $U/initcode.o > $U/initcode.asm
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tags: $(OBJS) _init
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etags *.S *.c
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ULIB = $U/ulib.o $U/usys.o $U/printf.o $U/umalloc.o
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_%: %.o $(ULIB)
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$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o $@ $^
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$(OBJDUMP) -S $@ > $*.asm
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$(OBJDUMP) -t $@ | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > $*.sym
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$U/usys.S : $U/usys.pl
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perl $U/usys.pl > $U/usys.S
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$U/usys.o : $U/usys.S
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$(CC) $(CFLAGS) -c -o $U/usys.o $U/usys.S
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$U/_forktest: $U/forktest.o $(ULIB)
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# forktest has less library code linked in - needs to be small
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# in order to be able to max out the proc table.
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$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o $U/_forktest $U/forktest.o $U/ulib.o $U/usys.o
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$(OBJDUMP) -S $U/_forktest > $U/forktest.asm
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mkfs/mkfs: mkfs/mkfs.c $K/fs.h $K/param.h
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gcc -Werror -Wall -I. -o mkfs/mkfs mkfs/mkfs.c
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# Prevent deletion of intermediate files, e.g. cat.o, after first build, so
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# that disk image changes after first build are persistent until clean. More
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# details:
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# http://www.gnu.org/software/make/manual/html_node/Chained-Rules.html
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.PRECIOUS: %.o
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UPROGS=\
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$U/_cat\
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$U/_echo\
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$U/_forktest\
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$U/_grep\
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$U/_init\
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$U/_kill\
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$U/_ln\
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$U/_ls\
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$U/_mkdir\
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$U/_rm\
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$U/_sh\
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$U/_stressfs\
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$U/_usertests\
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$U/_grind\
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$U/_wc\
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$U/_zombie\
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fs.img: mkfs/mkfs README $(UPROGS)
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mkfs/mkfs fs.img README $(UPROGS)
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-include kernel/*.d user/*.d
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clean:
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rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
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*/*.o */*.d */*.asm */*.sym \
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$U/initcode $U/initcode.out $K/kernel fs.img \
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mkfs/mkfs .gdbinit \
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$U/usys.S \
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$(UPROGS)
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# try to generate a unique GDB port
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GDBPORT = $(shell expr `id -u` % 5000 + 25000)
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# QEMU's gdb stub command line changed in 0.11
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QEMUGDB = $(shell if $(QEMU) -help | grep -q '^-gdb'; \
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then echo "-gdb tcp::$(GDBPORT)"; \
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else echo "-s -p $(GDBPORT)"; fi)
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ifndef CPUS
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CPUS := 3
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endif
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QEMUOPTS = -machine virt -bios none -kernel $K/kernel -m 128M -smp $(CPUS) -nographic
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QEMUOPTS += -drive file=fs.img,if=none,format=raw,id=x0
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QEMUOPTS += -device virtio-blk-device,drive=x0,bus=virtio-mmio-bus.0
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qemu: $K/kernel fs.img
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$(QEMU) $(QEMUOPTS)
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.gdbinit: .gdbinit.tmpl-riscv
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sed "s/:1234/:$(GDBPORT)/" < $^ > $@
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qemu-gdb: $K/kernel .gdbinit fs.img
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@echo "*** Now run 'gdb' in another window." 1>&2
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$(QEMU) $(QEMUOPTS) -S $(QEMUGDB)
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