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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 $(srctree)/arch/$(ARCH)/lib/asm-offsets.c),)
    
    offsets-file := include/generated/asm-offsets.h
    endif
    
    always  += $(offsets-file)
    targets += $(offsets-file)
    
    targets += arch/$(ARCH)/lib/asm-offsets.s
    
    
    
    # Default sed regexp - multiline due to syntax constraints
    define sed-y
    
    	"s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
    	/^->/{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
    
    arch/$(ARCH)/lib/asm-offsets.s: arch/$(ARCH)/lib/asm-offsets.c FORCE
    
    	$(Q)mkdir -p $(dir $@)
    	$(call if_changed_dep,cc_s_c)
    
    
    $(obj)/$(offsets-file): arch/$(ARCH)/lib/asm-offsets.s Kbuild
    
    	$(call cmd,offsets)