mirror of
https://github.com/ibm-s390-linux/s390-tools.git
synced 2026-08-05 02:14:52 +00:00
5ac171d224
Move the common `-nostdlib` and `$(NO_PIE_LINKFLAGS) linker options to the actual linker call. This makes the code easier to maintain. Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com> Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Steffen Eiden <seiden@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
99 lines
2.5 KiB
Makefile
99 lines
2.5 KiB
Makefile
# Common definitions
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include ../../common.mak
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ZIPL_DIR := $(rootdir)/zipl
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ZIPL_BOOT_DIR := $(ZIPL_DIR)/boot
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INCLUDE_PATHS := $(ZIPL_BOOT_DIR) $(ZIPL_DIR)/include $(rootdir)/include
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INCLUDE_PARMS := $(addprefix -I,$(INCLUDE_PATHS))
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ALL_CFLAGS := $(NO_PIE_CFLAGS) -Os -g \
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$(INCLUDE_PARMS) \
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-DENABLE_SCLP_ASCII=1 \
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-DS390_TOOLS_RELEASE=$(S390_TOOLS_RELEASE) \
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-fno-builtin -ffreestanding -fno-asynchronous-unwind-tables \
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-fno-delete-null-pointer-checks -fno-stack-protector \
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-fexec-charset=IBM1047 -m64 -mpacked-stack \
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-mstack-size=4096 -mstack-guard=128 -msoft-float \
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-Wall -Wformat-security -Wextra -Werror \
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-Wno-array-bounds
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FILES := stage3a.bin stage3b.bin stage3b_reloc.bin
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ZIPL_SRCS_C := libc.c ebcdic.c ebcdic_conv.c sclp.c
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ZIPL_SRCS_ASM := entry.S
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ZIPL_OBJS_C := $(ZIPL_SRCS_C:%.c=%.o)
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ZIPL_OBJS_ASM := $(ZIPL_SRCS_ASM:%.S=%.o)
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ZIPL_OBJS := $(ZIPL_OBJS_C) $(ZIPL_OBJS_ASM)
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all: $(FILES)
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# Prevent make from using some default rules...
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%: %.S
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%.o: %.S Makefile
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$(CC) $(ALL_CFLAGS) -c -o $@ $<
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%.o: %.c Makefile
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$(CC) $(ALL_CFLAGS) -c -o $@ $<
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# Dependencies for the .lds generation
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sources_lds_S = $(wildcard *.lds.S)
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dependencies_lds_S = $(sources_lds_S:%.lds.S=.%.lds.d)
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# Include all ".lds.d" dependency files for all make targets except for "clean"
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ifneq ($(MAKECMDGOALS),clean)
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-include $(dependencies_lds_S)
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endif
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%.lds: %.lds.S Makefile
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$(CPP) -Wp,-MD,.$@.d,-MT,$@ $(INCLUDE_PARMS) -P -C -o $@ $<
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# Special rules for zipl object files
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$(ZIPL_OBJS_C): %.o : $(ZIPL_BOOT_DIR)/%.c
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$(CC) $(ALL_CFLAGS) -c -o $@ $<
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$(ZIPL_OBJS_ASM): %.o : $(ZIPL_BOOT_DIR)/%.S
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$(CC) $(ALL_CFLAGS) -c -o $@ $<
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dependencies_zipl_c := $(ZIPL_SRCS_C:%.c=.%.o.d)
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$(dependencies_zipl_c): .%.o.d : $(ZIPL_BOOT_DIR)/%.c
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$(CC_SILENT) -MM $(ALL_CPPFLAGS) $(ALL_CFLAGS) $< > $@
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ifneq ($(MAKECMDGOALS),clean)
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-include $(dependencies_zipl_c)
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endif
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stage3b_reloc.o: stage3b.bin
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stage3a.elf: head.o stage3a_init.o stage3a.o stage3a.lds $(ZIPL_OBJS)
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stage3b.elf: head.o stage3b.o stage3b.lds $(ZIPL_OBJS)
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stage3b_reloc.elf:
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%.elf: %.o
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case $* in \
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stage3a) SFLAGS="-Wl,-T,stage3a.lds";; \
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stage3b) SFLAGS="-Wl,-T,stage3b.lds";; \
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stage3b_reloc) SFLAGS="-Wl,-estage3b_reloc_start,-Ttext,0";; \
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esac; \
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$(LINK) $$SFLAGS $(NO_PIE_LDFLAGS) -m64 -static -nostdlib $(filter %.o, $^) -o $@
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@chmod a-x $@
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%.bin: %.elf
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$(OBJCOPY) -O binary \
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--only-section=.text* \
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--only-section=.ex_table* \
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--only-section=.fixup* \
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--only-section=.data* \
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--only-section=.rodata* \
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$< $@
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@chmod a-x $@
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clean:
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rm -f *.o *.elf *.bin *.map .*.d *.lds
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.PHONY: all clean
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