1# SPDX-License-Identifier: GPL-2.0 2 3GENERIC_VDSO_MK_PATH := $(abspath $(lastword $(MAKEFILE_LIST))) 4GENERIC_VDSO_DIR := $(dir $(GENERIC_VDSO_MK_PATH)) 5 6c-gettimeofday-$(CONFIG_GENERIC_GETTIMEOFDAY) := $(addprefix $(GENERIC_VDSO_DIR), gettimeofday.c) 7 8# This cmd checks that the vdso library does not contain absolute relocation 9# It has to be called after the linking of the vdso library and requires it 10# as a parameter. 11# 12# $(ARCH_REL_TYPE_ABS) is defined in the arch specific makefile and corresponds 13# to the absolute relocation types printed by "objdump -R" and accepted by the 14# dynamic linker. 15ifndef ARCH_REL_TYPE_ABS 16$(error ARCH_REL_TYPE_ABS is not set) 17endif 18 19quiet_cmd_vdso_check = VDSOCHK $@ 20 cmd_vdso_check = if $(OBJDUMP) -R $@ | grep -E -h "$(ARCH_REL_TYPE_ABS)"; \ 21 then (echo >&2 "$@: dynamic relocations are not supported"; \ 22 rm -f $@; /bin/false); fi 23