247 lines
7.6 KiB
Makefile
247 lines
7.6 KiB
Makefile
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OBJS = \
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bio.o\
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console.o\
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exec.o\
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file.o\
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fs.o\
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ide.o\
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ioapic.o\
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kalloc.o\
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kbd.o\
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lapic.o\
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log.o\
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main.o\
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mp.o\
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picirq.o\
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pipe.o\
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proc.o\
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sleeplock.o\
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spinlock.o\
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string.o\
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swtch.o\
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syscall.o\
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sysfile.o\
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sysproc.o\
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trapasm.o\
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trap.o\
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uart.o\
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vectors.o\
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vm.o\
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# Cross-compiling (e.g., on Mac OS X)
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# TOOLPREFIX = i386-jos-elf
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# Using native tools (e.g., on X86 Linux)
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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 i386-jos-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \
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then echo 'i386-jos-elf-'; \
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elif objdump -i 2>&1 | grep 'elf32-i386' >/dev/null 2>&1; \
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then echo ''; \
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else echo "***" 1>&2; \
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echo "*** Error: Couldn't find an i386-*-elf version of GCC/binutils." 1>&2; \
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echo "*** Is the directory with i386-jos-elf-gcc in your PATH?" 1>&2; \
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echo "*** If your i386-*-elf toolchain is installed with a command" 1>&2; \
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echo "*** prefix other than 'i386-jos-elf-', set your TOOLPREFIX" 1>&2; \
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echo "*** environment variable to that prefix and run 'make' again." 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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# If the makefile can't find QEMU, specify its path here
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# QEMU = qemu-system-i386
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# Try to infer the correct QEMU
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ifndef QEMU
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QEMU = $(shell if which qemu > /dev/null; \
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then echo qemu; exit; \
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elif which qemu-system-i386 > /dev/null; \
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then echo qemu-system-i386; exit; \
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elif which qemu-system-x86_64 > /dev/null; \
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then echo qemu-system-x86_64; exit; \
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else \
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qemu=/Applications/Q.app/Contents/MacOS/i386-softmmu.app/Contents/MacOS/i386-softmmu; \
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if test -x $$qemu; then echo $$qemu; exit; fi; fi; \
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echo "***" 1>&2; \
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echo "*** Error: Couldn't find a working QEMU executable." 1>&2; \
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echo "*** Is the directory containing the qemu binary in your PATH" 1>&2; \
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echo "*** or have you tried setting the QEMU variable in Makefile?" 1>&2; \
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echo "***" 1>&2; exit 1)
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endif
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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 = -fno-pic -static -fno-builtin -fno-strict-aliasing -O2 -Wall -MD -ggdb -m32 -Werror -fno-omit-frame-pointer
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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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ASFLAGS = -m32 -gdwarf-2 -Wa,-divide
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# FreeBSD ld wants ``elf_i386_fbsd''
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LDFLAGS += -m $(shell $(LD) -V | grep elf_i386 2>/dev/null | head -n 1)
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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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xv6.img: bootblock kernel
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dd if=/dev/zero of=xv6.img count=10000
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dd if=bootblock of=xv6.img conv=notrunc
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dd if=kernel of=xv6.img seek=1 conv=notrunc
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xv6memfs.img: bootblock kernelmemfs
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dd if=/dev/zero of=xv6memfs.img count=10000
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dd if=bootblock of=xv6memfs.img conv=notrunc
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dd if=kernelmemfs of=xv6memfs.img seek=1 conv=notrunc
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bootblock: bootasm.S bootmain.c
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$(CC) $(CFLAGS) -fno-pic -O -nostdinc -I. -c bootmain.c
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$(CC) $(CFLAGS) -fno-pic -nostdinc -I. -c bootasm.S
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$(LD) $(LDFLAGS) -N -e start -Ttext 0x7C00 -o bootblock.o bootasm.o bootmain.o
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$(OBJDUMP) -S bootblock.o > bootblock.asm
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$(OBJCOPY) -S -O binary -j .text bootblock.o bootblock
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# The following line is here since it has been noticed that if you use Explorer to
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# copy folders on wsl, sometimees the execute permissions can be removed from perl scripts.
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# Uncomment if needed, but it will flag as a change for git.
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# chmod +x sign.pl
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./sign.pl bootblock
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syscall.h: gensyscalls.pl
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./gensyscalls.pl -h > syscall.h
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syscalltable.h: gensyscalls.pl
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./gensyscalls.pl -c > syscalltable.h
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usys.S: gensyscalls.pl
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./gensyscalls.pl -a > usys.S
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entryother: entryother.S
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$(CC) $(CFLAGS) -fno-pic -nostdinc -I. -c entryother.S
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$(LD) $(LDFLAGS) -N -e start -Ttext 0x7000 -o bootblockother.o entryother.o
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$(OBJCOPY) -S -O binary -j .text bootblockother.o entryother
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$(OBJDUMP) -S bootblockother.o > entryother.asm
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initcode: initcode.S
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$(CC) $(CFLAGS) -nostdinc -I. -c initcode.S
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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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kernel: syscall.h syscalltable.h $(OBJS) entry.o entryother initcode kernel.ld
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$(LD) $(LDFLAGS) -T kernel.ld -o kernel entry.o $(OBJS) -b binary initcode entryother
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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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# kernelmemfs is a copy of kernel that maintains the
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# disk image in memory instead of writing to a disk.
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# This is not so useful for testing persistent storage or
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# exploring disk buffering implementations, but it is
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# great for testing the kernel on real hardware without
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# needing a scratch disk.
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MEMFSOBJS = $(filter-out ide.o,$(OBJS)) memide.o
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kernelmemfs: $(MEMFSOBJS) entry.o entryother initcode kernel.ld fs.img
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$(LD) $(LDFLAGS) -T kernel.ld -o kernelmemfs entry.o $(MEMFSOBJS) -b binary initcode entryother fs.img
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$(OBJDUMP) -S kernelmemfs > kernelmemfs.asm
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$(OBJDUMP) -t kernelmemfs | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernelmemfs.sym
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tags: $(OBJS) entryother.S _init
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etags *.S *.c
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vectors.S: vectors.pl
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# chmod +x vectors.pl
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./vectors.pl > vectors.S
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ULIB = ulib.o usys.o printf.o umalloc.o
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_%: %.o $(ULIB)
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$(LD) $(LDFLAGS) -N -e _init -Ttext 0 -o $@ $^
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$(OBJDUMP) -S $@ > $*.asm
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$(OBJDUMP) -t $@ | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > $*.sym
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_forktest: 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) $(LDFLAGS) -N -e _init -Ttext 0 -o _forktest forktest.o ulib.o usys.o
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$(OBJDUMP) -S _forktest > forktest.asm
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mkfs: mkfs.c fs.h
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gcc -Werror -Wall -o 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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_cat\
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_echo\
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_forktest\
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_grep\
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_init\
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_kill\
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_ln\
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_ls\
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_mkdir\
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_rm\
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_sh\
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_stressfs\
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_usertests\
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_wc\
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_zombie\
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fs.img: mkfs $(UPROGS)
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./mkfs fs.img $(UPROGS)
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-include *.d
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clean:
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rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
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*.o *.d *.asm *.sym vectors.S bootblock entryother \
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initcode initcode.out kernel xv6.img fs.img kernelmemfs \
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xv6memfs.img mkfs .gdbinit \
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syscall.h syscalltable.h usys.S \
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$(UPROGS)
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# run in emulators
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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 := 2
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endif
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QEMUOPTS = -drive file=fs.img,index=1,media=disk,format=raw -drive file=xv6.img,index=0,media=disk,format=raw -smp $(CPUS) -m 512 $(QEMUEXTRA)
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qemu: fs.img xv6.img
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$(QEMU) -vga std -serial mon:stdio $(QEMUOPTS)
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qemu-memfs: xv6memfs.img
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$(QEMU) -vga std -drive file=xv6memfs.img,index=0,media=disk,format=raw -smp $(CPUS) -m 256
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qemu-nox: fs.img xv6.img
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$(QEMU) -nographic $(QEMUOPTS)
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qemu-curses: fs.img xv6.img
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$(QEMU) -curses $(QEMUOPTS)
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.gdbinit: .gdbinit.tmpl
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sed "s/localhost:1234/localhost:$(GDBPORT)/" < $^ > $@
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qemu-gdb: fs.img xv6.img .gdbinit
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@echo "*** Now run 'gdb'." 1>&2
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$(QEMU) -vga std -serial mon:stdio $(QEMUOPTS) -S $(QEMUGDB)
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qemu-nox-gdb: fs.img xv6.img .gdbinit
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@echo "*** Now run 'gdb'." 1>&2
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$(QEMU) -nographic $(QEMUOPTS) -S $(QEMUGDB)
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