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# SPDX-License-Identifier: GPL-2.0
#
# Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
#
obj-y := stub.o mmu.o process.o syscall.o uaccess.o \
stub_exe_embed.o
# Stub executable
stub_exe_objs-y := stub_exe.o
stub_exe_objs := $(foreach F,$(stub_exe_objs-y),$(obj)/$F)
# Object file containing the ELF executable
$(obj)/stub_exe_embed.o: $(src)/stub_exe_embed.S $(obj)/stub_exe
$(obj)/stub_exe.dbg: $(stub_exe_objs) FORCE
$(call if_changed,stub_exe)
$(obj)/stub_exe: OBJCOPYFLAGS := -S
$(obj)/stub_exe: $(obj)/stub_exe.dbg FORCE
$(call if_changed,objcopy)
quiet_cmd_stub_exe = STUB_EXE $@
cmd_stub_exe = $(CC) -nostdlib -o $@ \
$(filter-out $(UM_GPROF_OPT) $(UM_GCOV_OPT),$(KBUILD_CFLAGS)) $(STUB_EXE_LDFLAGS) \
$(filter %.o,$^)
STUB_EXE_LDFLAGS = -Wl,-n -static
targets += stub_exe.dbg stub_exe $(stub_exe_objs-y)
# end
# stub.o is in the stub, so it can't be built with profiling
# GCC hardened also auto-enables -fpic, but we need %ebx so it can't work ->
# disable it
CFLAGS_stub.o := $(CFLAGS_NO_HARDENING)
CFLAGS_stub_exe.o := $(CFLAGS_NO_HARDENING)
# Clang will call memset() from __builtin_alloca() when stack variable
# initialization is enabled, which is used in stub_exe.c.
CFLAGS_stub_exe.o += $(call cc-option, -ftrivial-auto-var-init=uninitialized)
UNPROFILE_OBJS := stub.o stub_exe.o
KCOV_INSTRUMENT := n
include $(srctree)/arch/um/scripts/Makefile.rules
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