86 lines
2.6 KiB
Makefile
86 lines
2.6 KiB
Makefile
R=rustkernel
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KERNEL_SOURCES = \
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entry.c \
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proc.c \
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swtch.c \
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trampoline.c \
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bio.c \
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fs.c \
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log.c \
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exec.c \
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sysfile.c \
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kernelvec.c \
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virtio_disk.c
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OBJS = $(KERNEL_SOURCES:%.c=%.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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CC = $(TOOLPREFIX)gcc
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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 -gdwarf-2
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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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TARGET_TRIPLE = riscv64gc-unknown-none-elf
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RUST_LIB = $R/target/$(TARGET_TRIPLE)/release/librustkernel.a
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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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.PHONY: clean
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kernel: $(OBJS) kernel.ld initcode $(RUST_LIB)
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$(LD) $(LDFLAGS) -T kernel.ld -o kernel $(OBJS) $(RUST_LIB)
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# $(OBJDUMP) -S kernel > kernel.asm
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# $(OBJDUMP) -t kernel | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernel.sym
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$(RUST_LIB): $(shell find $R/src -type f) $R/Cargo.toml
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cargo +nightly -Z unstable-options -C $R build --release
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# $(OBJDUMP) -S $(RUST_LIB) > $(RUST_LIB).asm
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initcode: initcode.S
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$(CC) $(CFLAGS) -march=rv64g -nostdinc -I. -Ikernel -c initcode.S -o initcode.o
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$(LD) $(LDFLAGS) -N -e start -Ttext 0 -o initcode.out initcode.o
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$(OBJCOPY) -S -O binary initcode.out initcode
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# $(OBJDUMP) -S initcode.o > initcode.asm
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%.o: %.c *.h
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$(CC) $(CFLAGS) -c $<
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clean:
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rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
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*.o *.a *.d *.asm *.sym *.gch \
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initcode initcode.out kernel
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cargo +nightly -Z unstable-options -C $R clean
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