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1 # specify path to QEMU, installed with MacPorts
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2 QEMU = qemu-system-arm
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3
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4 include makefile.inc
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14
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5 CC = /usr/local/cbclang/bin/clang
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6 AS = arm-linux-gnu-as
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7 LD = arm-linux-gnu-ld
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8 OBJCOPY = arm-linux-gnu-objcopy
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9 OBJDUMP = arm-linux-gnu-objdump
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10
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11 # CFLAGS = -march=armv6 -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -Werror -I. -g -O0
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12 CFLAGS = -target armv6-arm-none-eabi -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -I. -I ../cbclang/arm -g -O0
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13 LDFLAGS = -L.
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14 # ASFLAGS = -march=armv6
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15 ASFLAGS = -target armv6-arm-none-eabi
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16
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17 LIBGCC = $(shell $(CC) -print-libgcc-file-name)
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18
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19 # link the libgcc.a for __aeabi_idiv. ARM has no native support for div
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20 LIBS = $(LIBGCC)
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21
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22 OBJS = \
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23 lib/string.o \
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24 \
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25 arm.o\
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26 asm.o\
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27 bio.o\
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28 buddy.o\
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29 console.o\
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30 exec.o\
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31 file.o\
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32 fs.o\
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33 log.o\
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34 main.o\
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35 memide.o\
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36 pipe.o\
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37 proc.o\
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38 spinlock.o\
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39 start.o\
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40 swtch.o\
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41 syscall.o\
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42 sysfile.o\
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43 sysproc.o\
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44 trap_asm.o\
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45 trap.o\
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46 vm.o \
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47 \
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48 device/picirq.o \
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49 device/timer.o \
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50 device/uart.o
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51
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52 KERN_OBJS = $(OBJS) entry-clang.o
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53 kernel.elf: $(addprefix build/,$(KERN_OBJS)) kernel-clang.ld build/initcode build/fs.img
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54 cp -f build/initcode initcode
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55 cp -f build/fs.img fs.img
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56 $(call LINK_BIN, kernel-clang.ld, kernel.elf, \
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57 $(addprefix build/,$(KERN_OBJS)), \
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58 initcode fs.img)
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59 $(OBJDUMP) -S kernel.elf > kernel.asm
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60 $(OBJDUMP) -t kernel.elf | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernel.sym
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61 rm -f initcode fs.img
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62
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63 qemu: kernel.elf
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64 @clear
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65 @echo "Press Ctrl-A and then X to terminate QEMU session\n"
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66 $(QEMU) -M versatilepb -m 128 -cpu arm1176 -nographic -kernel kernel.elf
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67
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68 INITCODE_OBJ = initcode.o
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69 $(addprefix build/,$(INITCODE_OBJ)): initcode.S
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70 $(call build-directory)
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71 $(call AS_WITH, -nostdinc -I.)
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72
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73 #initcode is linked into the kernel, it will be used to craft the first process
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74 build/initcode: $(addprefix build/,$(INITCODE_OBJ))
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75 $(call LINK_INIT, -N -e start -Ttext 0)
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76 $(call OBJCOPY_INIT)
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77 $(OBJDUMP) -S $< > initcode.asm
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78
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79 build/fs.img:
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80 make -C tools
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81 make -C usr
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82
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83 clean:
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84 rm -rf build
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85 rm -f *.o *.d *.asm *.sym vectors.S bootblock entryother \
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86 initcode initcode.out kernel xv6.img fs.img kernel.elf memfs
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87 make -C tools clean
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88 make -C usr clean
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