OSCL-LXR

0001 # SPDX-License-Identifier: GPL-2.0
0002
0003 OBJECT_FILES_NON_STANDARD := y
0004
0005 purgatory-y := head.o purgatory.o string.o sha256.o mem.o
0006
0007 targets += $(purgatory-y) purgatory.lds purgatory purgatory.chk purgatory.ro
0008 PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))
0009
0010 $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.c FORCE
0011         $(call if_changed_rule,cc_o_c)
0012
0013 CFLAGS_sha256.o := -D__DISABLE_EXPORTS
0014
0015 $(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE
0016         $(call if_changed_rule,as_o_S)
0017
0018 KCOV_INSTRUMENT := n
0019 GCOV_PROFILE := n
0020 UBSAN_SANITIZE := n
0021 KASAN_SANITIZE := n
0022 KCSAN_SANITIZE := n
0023
0024 KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes
0025 KBUILD_CFLAGS += -Wno-pointer-sign -Wno-sign-compare
0026 KBUILD_CFLAGS += -fno-zero-initialized-in-bss -fno-builtin -ffreestanding
0027 KBUILD_CFLAGS += -c -MD -Os -m64 -msoft-float -fno-common
0028 KBUILD_CFLAGS += -fno-stack-protector
0029 KBUILD_CFLAGS += $(CLANG_FLAGS)
0030 KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
0031 KBUILD_AFLAGS := $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS))
0032
0033 # Since we link purgatory with -r unresolved symbols are not checked, so we
0034 # also link a purgatory.chk binary without -r to check for unresolved symbols.
0035 PURGATORY_LDFLAGS := -nostdlib -z nodefaultlib
0036 LDFLAGS_purgatory := -r $(PURGATORY_LDFLAGS) -T
0037 LDFLAGS_purgatory.chk := -e purgatory_start $(PURGATORY_LDFLAGS)
0038 $(obj)/purgatory: $(obj)/purgatory.lds $(PURGATORY_OBJS) FORCE
0039                 $(call if_changed,ld)
0040
0041 $(obj)/purgatory.chk: $(obj)/purgatory FORCE
0042                 $(call if_changed,ld)
0043
0044 OBJCOPYFLAGS_purgatory.ro := -O elf64-s390
0045 OBJCOPYFLAGS_purgatory.ro += --remove-section='*debug*'
0046 OBJCOPYFLAGS_purgatory.ro += --remove-section='.comment'
0047 OBJCOPYFLAGS_purgatory.ro += --remove-section='.note.*'
0048 $(obj)/purgatory.ro: $(obj)/purgatory $(obj)/purgatory.chk FORCE
0049                 $(call if_changed,objcopy)
0050
0051 $(obj)/kexec-purgatory.o: $(obj)/purgatory.ro
0052
0053 obj-y += kexec-purgatory.o