15d45950dSMasahiro Yamada# SPDX-License-Identifier: GPL-2.0-only 25d45950dSMasahiro Yamada 35d45950dSMasahiro YamadaPHONY := __default 47a342e6cSMasahiro Yamada__default: vmlinux.o modules.builtin.modinfo modules.builtin 55d45950dSMasahiro Yamada 65d45950dSMasahiro Yamadainclude include/config/auto.conf 75d45950dSMasahiro Yamadainclude $(srctree)/scripts/Kbuild.include 85d45950dSMasahiro Yamada 9b42d2306SMasahiro Yamada# for objtool 10b42d2306SMasahiro Yamadainclude $(srctree)/scripts/Makefile.lib 11b42d2306SMasahiro Yamada 125d45950dSMasahiro Yamada# Generate a linker script to ensure correct ordering of initcalls for Clang LTO 135d45950dSMasahiro Yamada# --------------------------------------------------------------------------- 145d45950dSMasahiro Yamada 155d45950dSMasahiro Yamadaquiet_cmd_gen_initcalls_lds = GEN $@ 165d45950dSMasahiro Yamada cmd_gen_initcalls_lds = \ 175d45950dSMasahiro Yamada $(PYTHON3) $(srctree)/scripts/jobserver-exec \ 185d45950dSMasahiro Yamada $(PERL) $(real-prereqs) > $@ 195d45950dSMasahiro Yamada 205d45950dSMasahiro Yamada.tmp_initcalls.lds: $(srctree)/scripts/generate_initcall_order.pl \ 2132164845SMasahiro Yamada vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE 225d45950dSMasahiro Yamada $(call if_changed,gen_initcalls_lds) 235d45950dSMasahiro Yamada 245d45950dSMasahiro Yamadatargets := .tmp_initcalls.lds 255d45950dSMasahiro Yamada 265d45950dSMasahiro Yamadaifdef CONFIG_LTO_CLANG 275d45950dSMasahiro Yamadainitcalls-lds := .tmp_initcalls.lds 285d45950dSMasahiro Yamadaendif 295d45950dSMasahiro Yamada 30b42d2306SMasahiro Yamada# objtool for vmlinux.o 31b42d2306SMasahiro Yamada# --------------------------------------------------------------------------- 32b42d2306SMasahiro Yamada# 33b42d2306SMasahiro Yamada# For LTO and IBT, objtool doesn't run on individual translation units. 34b42d2306SMasahiro Yamada# Run everything on vmlinux instead. 35b42d2306SMasahiro Yamada 36b42d2306SMasahiro Yamadaobjtool-enabled := $(or $(delay-objtool),$(CONFIG_NOINSTR_VALIDATION)) 37b42d2306SMasahiro Yamada 389ec6ab6eSMasahiro Yamadavmlinux-objtool-args-$(delay-objtool) += $(objtool-args-y) 399ec6ab6eSMasahiro Yamadavmlinux-objtool-args-$(CONFIG_GCOV_KERNEL) += --no-unreachable 40*626ea25eSJosh Poimboeufvmlinux-objtool-args-$(CONFIG_NOINSTR_VALIDATION) += --noinstr \ 41*626ea25eSJosh Poimboeuf $(if $(or $(CONFIG_CPU_UNRET_ENTRY),$(CONFIG_CPU_SRSO)), --unret) 42b42d2306SMasahiro Yamada 439ec6ab6eSMasahiro Yamadaobjtool-args = $(vmlinux-objtool-args-y) --link 44b42d2306SMasahiro Yamada 455d45950dSMasahiro Yamada# Link of vmlinux.o used for section mismatch analysis 465d45950dSMasahiro Yamada# --------------------------------------------------------------------------- 475d45950dSMasahiro Yamada 485d45950dSMasahiro Yamadaquiet_cmd_ld_vmlinux.o = LD $@ 495d45950dSMasahiro Yamada cmd_ld_vmlinux.o = \ 505d45950dSMasahiro Yamada $(LD) ${KBUILD_LDFLAGS} -r -o $@ \ 515d45950dSMasahiro Yamada $(addprefix -T , $(initcalls-lds)) \ 5232164845SMasahiro Yamada --whole-archive vmlinux.a --no-whole-archive \ 535d45950dSMasahiro Yamada --start-group $(KBUILD_VMLINUX_LIBS) --end-group \ 54b42d2306SMasahiro Yamada $(cmd_objtool) 555d45950dSMasahiro Yamada 565d45950dSMasahiro Yamadadefine rule_ld_vmlinux.o 575d45950dSMasahiro Yamada $(call cmd_and_savecmd,ld_vmlinux.o) 58b42d2306SMasahiro Yamada $(call cmd,gen_objtooldep) 595d45950dSMasahiro Yamadaendef 605d45950dSMasahiro Yamada 6132164845SMasahiro Yamadavmlinux.o: $(initcalls-lds) vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE 625d45950dSMasahiro Yamada $(call if_changed_rule,ld_vmlinux.o) 635d45950dSMasahiro Yamada 645d45950dSMasahiro Yamadatargets += vmlinux.o 655d45950dSMasahiro Yamada 667a342e6cSMasahiro Yamada# module.builtin.modinfo 677a342e6cSMasahiro Yamada# --------------------------------------------------------------------------- 687a342e6cSMasahiro Yamada 697a342e6cSMasahiro YamadaOBJCOPYFLAGS_modules.builtin.modinfo := -j .modinfo -O binary 707a342e6cSMasahiro Yamada 717a342e6cSMasahiro Yamadatargets += modules.builtin.modinfo 727a342e6cSMasahiro Yamadamodules.builtin.modinfo: vmlinux.o FORCE 737a342e6cSMasahiro Yamada $(call if_changed,objcopy) 747a342e6cSMasahiro Yamada 757a342e6cSMasahiro Yamada# module.builtin 767a342e6cSMasahiro Yamada# --------------------------------------------------------------------------- 777a342e6cSMasahiro Yamada 787a342e6cSMasahiro Yamada# The second line aids cases where multiple modules share the same object. 797a342e6cSMasahiro Yamada 807a342e6cSMasahiro Yamadaquiet_cmd_modules_builtin = GEN $@ 817a342e6cSMasahiro Yamada cmd_modules_builtin = \ 827a342e6cSMasahiro Yamada tr '\0' '\n' < $< | \ 837a342e6cSMasahiro Yamada sed -n 's/^[[:alnum:]:_]*\.file=//p' | \ 847a342e6cSMasahiro Yamada tr ' ' '\n' | uniq | sed -e 's:^:kernel/:' -e 's/$$/.ko/' > $@ 857a342e6cSMasahiro Yamada 867a342e6cSMasahiro Yamadatargets += modules.builtin 877a342e6cSMasahiro Yamadamodules.builtin: modules.builtin.modinfo FORCE 887a342e6cSMasahiro Yamada $(call if_changed,modules_builtin) 897a342e6cSMasahiro Yamada 905d45950dSMasahiro Yamada# Add FORCE to the prequisites of a target to force it to be always rebuilt. 915d45950dSMasahiro Yamada# --------------------------------------------------------------------------- 925d45950dSMasahiro Yamada 935d45950dSMasahiro YamadaPHONY += FORCE 945d45950dSMasahiro YamadaFORCE: 955d45950dSMasahiro Yamada 965d45950dSMasahiro Yamada# Read all saved command lines and dependencies for the $(targets) we 975d45950dSMasahiro Yamada# may be building above, using $(if_changed{,_dep}). As an 985d45950dSMasahiro Yamada# optimization, we don't need to read them if the target does not 995d45950dSMasahiro Yamada# exist, we will rebuild anyway in that case. 1005d45950dSMasahiro Yamada 1015d45950dSMasahiro Yamadaexisting-targets := $(wildcard $(sort $(targets))) 1025d45950dSMasahiro Yamada 1035d45950dSMasahiro Yamada-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 1045d45950dSMasahiro Yamada 1055d45950dSMasahiro Yamada.PHONY: $(PHONY) 106