#
# Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
#
-# This file may be distributed under the terms of the GNU GPLv3 license.
+# This file may be distributed under the terms of the GNU LGPLv3 license.
# Output directory
OUT=out/
# Source files
-SRC16=floppy.c disk.c system.c clock.c serial.c kbd.c mouse.c output.c boot.c
-SRC32=post.c output.c
-
-# Default compiler flags (note -march=armv4 is needed for 16 bit insns)
-CFLAGS = -Wall -g -Os -MD -m32 -march=i386 -mregparm=2 -ffreestanding
-CFLAGS16 = -Wall -Os -MD -m32 -DMODE16 -march=i386 -mregparm=2 -ffreestanding -fno-jump-tables
-
-all: $(OUT) $(OUT)rom.bin
+SRCBOTH=output.c util.c floppy.c ata.c misc.c mouse.c kbd.c pci.c \
+ serial.c clock.c pic.c cdrom.c ps2port.c smpdetect.c resume.c \
+ pnpbios.c pirtable.c
+SRC16=$(SRCBOTH) system.c disk.c apm.c pcibios.c vgahooks.c font.c
+SRC32=$(SRCBOTH) post.c shadow.c memmap.c coreboot.c boot.c \
+ acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \
+ lzmadecode.c
+
+cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
+ /dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)
+
+# Default compiler flags
+COMMONCFLAGS = -Wall -Os -MD -m32 -march=i386 -mregparm=3 \
+ -mpreferred-stack-boundary=2 -mrtd -freg-struct-return \
+ -ffreestanding -fwhole-program -fomit-frame-pointer \
+ -fno-delete-null-pointer-checks -Wno-strict-aliasing \
+ -minline-all-stringops
+COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
+COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
+COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)
+
+override CFLAGS = $(COMMONCFLAGS) -g -DMODE16=0
+CFLAGS16INC = $(COMMONCFLAGS) -DMODE16=1 -fno-jump-tables -fno-defer-pop \
+ $(call cc-option,$(CC),-fno-tree-switch-conversion,) \
+ $(call cc-option,$(CC),--param large-stack-frame=4,)
+CFLAGS16INC += -ffunction-sections -fdata-sections
+CFLAGS16 = $(CFLAGS16INC) -g
+
+all: $(OUT) $(OUT)bios.bin
# Run with "make V=1" to see the actual compile commands
ifdef V
Q=@
endif
+OBJCOPY=objcopy
+OBJDUMP=objdump
+NM=nm
+STRIP=strip
+
.PHONY : all FORCE
vpath %.c src
vpath %.S src
################ Build rules
-$(OUT)%.proc.16.s: $(OUT)%.16.s
- @echo " Moving data sections to text in $<"
- $(Q)sed 's/\t.section\t.rodata.*// ; s/\t.data//' < $< > $@
-$(OUT)%.16.s: %.c
- @echo " Generating assembler for $<"
- $(Q)$(CC) $(CFLAGS16) -fwhole-program -S -combine -c $< -o $@
+TESTGCC:=$(shell CC=$(CC) tools/test-gcc.sh)
+ifeq "$(TESTGCC)" "-1"
+$(error "Please upgrade GCC")
+endif
+
+ifndef AVOIDCOMBINE
+AVOIDCOMBINE=$(TESTGCC)
+endif
+
+# Do a whole file compile - two methods are supported. The first
+# involves including all the content textually via #include
+# directives. The second method uses gcc's "-combine" option.
+ifeq "$(AVOIDCOMBINE)" "1"
+define whole-compile
+@echo " Compiling whole program $3"
+$(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
+$(Q)$(CC) $1 -c $3.tmp.c -o $3
+endef
+else
+define whole-compile
+@echo " Compiling whole program $3"
+$(Q)$(CC) $1 -combine -c $2 -o $3
+endef
+endif
+
+
+$(OUT)%.s: %.c
+ @echo " Compiling to assembler $@"
+ $(Q)$(CC) $(CFLAGS16INC) -S -c $< -o $@
$(OUT)%.lds: %.lds.S
- @echo " Precompiling $<"
- $(Q)$(CPP) -P $< -o $@
+ @echo " Precompiling $@"
+ $(Q)$(CPP) -P -D__ASSEMBLY__ $< -o $@
-$(OUT)%.bin: $(OUT)%.o
- @echo " Extracting binary $@"
- $(Q)objcopy -O binary $< $@
+$(OUT)asm-offsets.h: $(OUT)asm-offsets.s
+ @echo " Generating offset file $@"
+ $(Q)./tools/gen-offsets.sh $< $@
-$(OUT)%.offset.auto.h: $(OUT)%.o
- @echo " Generating symbol offset header $@"
- $(Q)nm $< | ./tools/defsyms.py > $@
+$(OUT)ccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S, $(addprefix src/, $(SRC16)),$@)
-$(OUT)blob.16.s:
- @echo " Generating whole program assembler $@"
- $(Q)$(CC) $(CFLAGS16) -fwhole-program -S -combine -c $(addprefix src/, $(SRC16)) -o $@
+$(OUT)romlayout16.o: romlayout.S $(OUT)ccode.16.s $(OUT)asm-offsets.h
+ @echo " Compiling (16bit) $@"
+ $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ $< -o $@
-$(OUT)romlayout16.o: romlayout.S $(OUT)blob.proc.16.s $(OUT)font.proc.16.s $(OUT)cbt.proc.16.s
- @echo " Generating 16bit layout of $@"
- $(Q)$(CC) $(CFLAGS16) -c $< -o $@
+$(OUT)ccode32.o: ; $(call whole-compile, $(CFLAGS), $(addprefix src/, $(SRC32)),$@)
-$(OUT)rom16.o: $(OUT)romlayout16.o
- @echo " Linking $@"
- $(Q)ld -melf_i386 -Ttext 0 $< -o $@
+$(OUT)rom32.o: $(OUT)ccode32.o $(OUT)rombios32.lds
+ @echo " Linking (no relocs) $@"
+ $(Q)$(LD) -r -T $(OUT)rombios32.lds $< -o $@
-$(OUT)rom16.bin: $(OUT)rom16.o
- @echo " Extracting binary $@"
- $(Q)objcopy -O binary $< $@
+$(OUT)romlayout.lds: $(OUT)romlayout16.o
+ @echo " Building layout information $@"
+ $(Q)$(OBJDUMP) -h $< | ./tools/layoutrom.py $@
-$(OUT)romlayout32.o: $(OUT)rom16.offset.auto.h
- @echo " Compiling whole program $@"
- $(Q)$(CC) $(CFLAGS) -fwhole-program -combine -c $(addprefix src/, $(SRC32)) -o $@
+$(OUT)rombios16.lds: $(OUT)romlayout.lds
-$(OUT)rom32.o: $(OUT)romlayout32.o $(OUT)rombios32.lds
+$(OUT)rom16.o: $(OUT)romlayout16.o $(OUT)rom32.o $(OUT)rombios16.lds
+ @echo " Linking (16bit) $@"
+ $(Q)$(OBJCOPY) --prefix-symbols=_code32_ $(OUT)rom32.o $(OUT)rom32.rename.o
+ $(Q)$(LD) -T $(OUT)rombios16.lds -R $(OUT)rom32.rename.o $< -o $@
+
+$(OUT)rom.o: $(OUT)rom16.o $(OUT)rom32.o $(OUT)rombios.lds
@echo " Linking $@"
- $(Q)ld -T $(OUT)rombios32.lds $< -o $@
+ $(Q)$(LD) -T $(OUT)rombios.lds $(OUT)rom16.o $(OUT)rom32.o -o $@
+
+$(OUT)bios.bin.elf: $(OUT)rom.o
+ @echo " Prepping $@"
+ $(Q)$(NM) $< | ./tools/checkrom.py
+ $(Q)$(STRIP) $< -o $@
+
+$(OUT)bios.bin: $(OUT)bios.bin.elf
+ @echo " Extracting binary $@"
+ $(Q)$(OBJCOPY) -O binary $< $@
-$(OUT)rom.bin: $(OUT)rom16.bin $(OUT)rom32.bin $(OUT)rom16.offset.auto.h $(OUT)rom32.offset.auto.h
- @echo " Building $@"
- $(Q)./tools/buildrom.py
####### Generic rules
clean:
- rm -rf $(OUT)
+ $(Q)rm -rf $(OUT)
$(OUT):
- mkdir $@
+ $(Q)mkdir $@
-include $(OUT)*.d
projects / seabios.git / blobdiff