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#

# Kbuild for top-level directory of the kernel

# This file takes care of the following:

# 1) Generate asm-offsets.h

# 2) Check for missing system calls

#####

# 1) Generate asm-offsets.h

#

offsets-file := include/asm-$(SRCARCH)/asm-offsets.h

always  := $(offsets-file)

targets := $(offsets-file)

targets += arch/$(SRCARCH)/kernel/asm-offsets.s

clean-files := $(addprefix $(objtree)/,$(targets))

# Default sed regexp - multiline due to syntax constraints

define sed-y

        "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"

endef

# Override default regexp for specific architectures

sed-$(CONFIG_MIPS) := "/^@@@/{s/^@@@//; s/ \#.*\$$//; p;}"

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/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c FORCE

        $(Q)mkdir -p $(dir $@)

        $(call if_changed_dep,cc_s_c)

$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild

        $(Q)mkdir -p $(dir $@)

        $(call cmd,offsets)

#####

# 2) Check for missing system calls

#

quiet_cmd_syscalls = CALL    $<

      cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags)

PHONY += missing-syscalls

missing-syscalls: scripts/checksyscalls.sh FORCE

        $(call cmd,syscalls)