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Kbuild 2.17 KB
6a44d8063   Masahiro Yamada   kbuild: move asm-...
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  #
  # Kbuild for top-level directory of U-Boot
  # This file takes care of the following:
  # 1) Generate generic-asm-offsets.h
  # 2) Generate asm-offsets.h
  
  #####
  # 1) Generate generic-asm-offsets.h
  
  generic-offsets-file := include/generated/generic-asm-offsets.h
  
  always  := $(generic-offsets-file)
  targets := $(generic-offsets-file) lib/asm-offsets.s
  
  quiet_cmd_generic-offsets = GEN     $@
  define cmd_generic-offsets
  	(set -e; \
  	 echo "#ifndef __GENERIC_ASM_OFFSETS_H__"; \
  	 echo "#define __GENERIC_ASM_OFFSETS_H__"; \
  	 echo "/*"; \
  	 echo " * DO NOT MODIFY."; \
  	 echo " *"; \
  	 echo " * This file was generated by Kbuild"; \
  	 echo " *"; \
  	 echo " */"; \
  	 echo ""; \
  	 sed -ne $(sed-y) $<; \
  	 echo ""; \
  	 echo "#endif" ) > $@
  endef
  
  # We use internal kbuild rules to avoid the "is up to date" message from make
  lib/asm-offsets.s: lib/asm-offsets.c FORCE
  	$(Q)mkdir -p $(dir $@)
  	$(call if_changed_dep,cc_s_c)
  
  $(obj)/$(generic-offsets-file): lib/asm-offsets.s Kbuild
  	$(Q)mkdir -p $(dir $@)
  	$(call cmd,generic-offsets)
  
  #####
  # 2) Generate asm-offsets.h
  #
  
  ifneq ($(wildcard $(srctree)/$(CPUDIR)/$(SOC)/asm-offsets.c),)
  offsets-file := include/generated/asm-offsets.h
  endif
  
  always  += $(offsets-file)
  targets += $(offsets-file)
  targets += $(CPUDIR)/$(SOC)/asm-offsets.s
  
  
  # Default sed regexp - multiline due to syntax constraints
  define sed-y
  	"/^->/{s:->#\(.*\):/* \1 */:; \
  	s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
  	s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
  	s:->::; p;}"
  endef
  
  CFLAGS_asm-offsets.o := -DDO_DEPS_ONLY
  
  quiet_cmd_offsets = GEN     $@
  define cmd_offsets
  	(set -e; \
  	 echo "#ifndef __ASM_OFFSETS_H__"; \
  	 echo "#define __ASM_OFFSETS_H__"; \
  	 echo "/*"; \
  	 echo " * DO NOT MODIFY."; \
  	 echo " *"; \
  	 echo " * This file was generated by Kbuild"; \
  	 echo " *"; \
  	 echo " */"; \
  	 echo ""; \
  	 sed -ne $(sed-y) $<; \
  	 echo ""; \
  	 echo "#endif" ) > $@
  endef
  
  # We use internal kbuild rules to avoid the "is up to date" message from make
  $(CPUDIR)/$(SOC)/asm-offsets.s: $(CPUDIR)/$(SOC)/asm-offsets.c FORCE
  	$(Q)mkdir -p $(dir $@)
  	$(call if_changed_dep,cc_s_c)
  
  $(obj)/$(offsets-file): $(CPUDIR)/$(SOC)/asm-offsets.s
  	$(call cmd,offsets)