2008-02-26 04:25:15 +01:00
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# Legacy Bios build system
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#
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# Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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# Output directory
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OUT=out/
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# Source files
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2008-02-29 06:22:27 +01:00
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SRC16=floppy.c disk.c system.c clock.c serial.c kbd.c mouse.c output.c \
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boot.c ata.c
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2008-02-26 04:25:15 +01:00
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SRC32=post.c output.c
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2008-03-02 17:24:36 +01:00
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TABLESRC=font.c cbt.c floppy_dbt.c
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2008-02-26 04:25:15 +01:00
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2008-02-27 16:41:41 +01:00
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cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
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/dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)
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2008-02-27 03:33:14 +01:00
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# Default compiler flags
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2008-02-27 16:41:41 +01:00
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COMMONCFLAGS = -Wall -Os -MD -m32 -march=i386 -mregparm=2 -ffreestanding
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COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
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COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
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COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)
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CFLAGS = $(COMMONCFLAGS) -g
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CFLAGS16 = $(COMMONCFLAGS) -DMODE16 -fno-jump-tables
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2008-02-29 02:01:11 +01:00
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CFLAGS16WHOLE = $(CFLAGS16) -g -fwhole-program
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2008-02-26 04:25:15 +01:00
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2008-03-02 17:24:36 +01:00
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TABLETMP=$(addprefix $(OUT), $(patsubst %.c,%.16.s,$(TABLESRC)))
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all: $(OUT) $(OUT)rom.bin $(TABLETMP)
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2008-02-26 04:25:15 +01:00
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# Run with "make V=1" to see the actual compile commands
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ifdef V
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Q=
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else
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Q=@
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endif
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.PHONY : all FORCE
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vpath %.c src
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vpath %.S src
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################ Build rules
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$(OUT)%.proc.16.s: $(OUT)%.16.s
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@echo " Moving data sections to text in $<"
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2008-02-29 02:01:11 +01:00
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$(Q)sed 's/\t\.section\t\.rodata.*// ; s/\t\.data//' < $< > $@
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2008-02-26 04:25:15 +01:00
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$(OUT)%.16.s: %.c
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@echo " Generating assembler for $<"
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2008-02-27 03:33:14 +01:00
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$(Q)$(CC) $(CFLAGS16) -fwhole-program -S -combine -c $< src/null.c -o $@
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2008-02-26 04:25:15 +01:00
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$(OUT)%.lds: %.lds.S
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@echo " Precompiling $<"
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$(Q)$(CPP) -P $< -o $@
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$(OUT)%.bin: $(OUT)%.o
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@echo " Extracting binary $@"
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$(Q)objcopy -O binary $< $@
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$(OUT)%.offset.auto.h: $(OUT)%.o
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@echo " Generating symbol offset header $@"
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2008-03-01 16:11:55 +01:00
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$(Q)nm $< | ./tools/defsyms.py $@
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2008-02-26 04:25:15 +01:00
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$(OUT)blob.16.s:
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@echo " Generating whole program assembler $@"
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2008-02-29 02:01:11 +01:00
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$(Q)$(CC) $(CFLAGS16WHOLE) -S -combine -c $(addprefix src/, $(SRC16)) -o $@
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2008-02-26 04:25:15 +01:00
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2008-03-02 17:24:36 +01:00
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TABLEASM=$(addprefix $(OUT), $(patsubst %.c,%.proc.16.s,$(TABLESRC)))
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$(OUT)romlayout16.o: romlayout.S $(OUT)blob.proc.16.s $(TABLEASM)
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2008-02-26 04:25:15 +01:00
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@echo " Generating 16bit layout of $@"
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$(Q)$(CC) $(CFLAGS16) -c $< -o $@
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$(OUT)rom16.o: $(OUT)romlayout16.o
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@echo " Linking $@"
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2008-02-27 03:33:14 +01:00
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$(Q)ld -melf_i386 -e post16 -Ttext 0 $< -o $@
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2008-02-26 04:25:15 +01:00
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$(OUT)rom16.bin: $(OUT)rom16.o
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@echo " Extracting binary $@"
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$(Q)objcopy -O binary $< $@
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$(OUT)romlayout32.o: $(OUT)rom16.offset.auto.h
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@echo " Compiling whole program $@"
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$(Q)$(CC) $(CFLAGS) -fwhole-program -combine -c $(addprefix src/, $(SRC32)) -o $@
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$(OUT)rom32.o: $(OUT)romlayout32.o $(OUT)rombios32.lds
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@echo " Linking $@"
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$(Q)ld -T $(OUT)rombios32.lds $< -o $@
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$(OUT)rom.bin: $(OUT)rom16.bin $(OUT)rom32.bin $(OUT)rom16.offset.auto.h $(OUT)rom32.offset.auto.h
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@echo " Building $@"
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$(Q)./tools/buildrom.py
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####### Generic rules
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clean:
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rm -rf $(OUT)
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$(OUT):
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mkdir $@
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-include $(OUT)*.d
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