1link-out-dir = $(out-dir)/core 2 3link-script = $(if $(wildcard $(platform-dir)/kern.ld.S), \ 4 $(platform-dir)/kern.ld.S, \ 5 $(arch-dir)/kernel/kern.ld.S) 6link-script-pp = $(link-out-dir)/kern.ld 7link-script-dep = $(link-out-dir)/.kern.ld.d 8 9link-ldflags-common += $(call ld-option,--no-warn-rwx-segments) 10 11link-ldflags = $(LDFLAGS) 12ifeq ($(CFG_CORE_ASLR),y) 13link-ldflags += -pie -Bsymbolic -z norelro $(ldflag-apply-dynamic-relocs) 14endif 15 16link-ldflags += -T $(link-script-pp) -Map=$(link-out-dir)/tee.map 17link-ldflags += --sort-section=alignment 18link-ldflags += --fatal-warnings 19link-ldflags += --gc-sections 20link-ldflags += $(link-ldflags-common) 21 22link-ldadd = $(LDADD) 23link-ldadd += $(ldflags-external) 24link-ldadd += $(libdeps) 25link-objs := $(objs) 26 27ldargs-tee.elf := $(link-ldflags) $(link-objs) $(link-out-dir)/version.o \ 28 $(link-ldadd) $(libgcccore) 29 30link-script-cppflags := \ 31 $(filter-out $(CPPFLAGS_REMOVE) $(cppflags-remove), \ 32 $(nostdinccore) $(CPPFLAGS) \ 33 $(addprefix -I,$(incdirscore) $(link-out-dir)) \ 34 $(cppflagscore)) 35 36ldargs-all_objs := -T $(link-script) --no-check-sections \ 37 $(link-ldflags-common) \ 38 $(link-objs) $(link-ldadd) $(libgcccore) 39cleanfiles += $(link-out-dir)/all_objs.o 40$(link-out-dir)/all_objs.o: $(objs) $(libdeps) $(MAKEFILE_LIST) 41 @$(cmd-echo-silent) ' LD $@' 42 $(q)$(LDcore) $(ldargs-all_objs) -o $@ 43 44-include $(link-script-dep) 45 46link-script-extra-deps += $(conf-file) 47cleanfiles += $(link-script-pp) $(link-script-dep) 48$(link-script-pp): $(link-script) $(link-script-extra-deps) 49 @$(cmd-echo-silent) ' CPP $@' 50 @mkdir -p $(dir $@) 51 $(q)$(CPPcore) -P -MT $@ -MD -MF $(link-script-dep) \ 52 $(link-script-cppflags) $< -o $@ 53 54define update-buildcount 55 @$(cmd-echo-silent) ' UPD $(1)' 56 $(q)if [ ! -f $(1) ]; then \ 57 mkdir -p $(dir $(1)); \ 58 echo 1 >$(1); \ 59 else \ 60 expr 0`cat $(1)` + 1 >$(1); \ 61 fi 62endef 63 64# filter-out to workaround objdump warning 65version-o-cflags = $(filter-out -g3,$(CFLAGS) $(core-platform-cflags) \ 66 $(platform-cflags) $(cflagscore)) 67# SOURCE_DATE_EPOCH defined for reproducible builds 68ifneq ($(SOURCE_DATE_EPOCH),) 69date-opts = -d @$(SOURCE_DATE_EPOCH) 70endif 71DATE_STR = `LC_ALL=C date -u $(date-opts)` 72BUILD_COUNT_STR = `cat $(link-out-dir)/.buildcount` 73CORE_CC_VERSION = `$(CCcore) -v 2>&1 | grep "version " | sed 's/ *$$//'` 74define gen-version-o 75 $(call update-buildcount,$(link-out-dir)/.buildcount) 76 @$(cmd-echo-silent) ' GEN $(link-out-dir)/version.o' 77 $(q)cd $(link-out-dir) && \ 78 echo -e "const char core_v_str[] =" \ 79 "\"$(TEE_IMPL_VERSION) \"" \ 80 "\"($(CORE_CC_VERSION)) \"" \ 81 "\"#$(BUILD_COUNT_STR) \"" \ 82 "\"$(DATE_STR) \"" \ 83 "\"$(CFG_KERN_LINKER_ARCH)\";\n" \ 84 | $(CCcore) $(version-o-cflags) \ 85 -xc - -c -o version.o 86endef 87 88$(link-out-dir)/version.o: 89 $(call gen-version-o) 90 91-include $(link-out-dir)/.tee.elf.cmd 92define check-link-objs 93$(if $(strip $(filter-out $(link-objs), $(old-link-objs)) 94 $(filter-out $(old-link-objs), $(link-objs))), FORCE_LINK := FORCE) 95endef 96#$(eval $(call check-link-objs)) 97 98all: $(link-out-dir)/tee.elf 99cleanfiles += $(link-out-dir)/tee.elf $(link-out-dir)/tee.map 100cleanfiles += $(link-out-dir)/version.o 101cleanfiles += $(link-out-dir)/.buildcount 102cleanfiles += $(link-out-dir)/.tee.elf.cmd 103$(link-out-dir)/tee.elf: $(link-objs) $(libdeps) $(link-script-pp) $(FORCE_LINK) 104 $(call gen-version-o) 105 @echo "old-link-objs := $(link-objs)" >$(link-out-dir)/.tee.elf.cmd 106 @$(cmd-echo-silent) ' LD $@' 107 $(q)$(LDcore) $(ldargs-tee.elf) -o $@ 108 109all: $(link-out-dir)/tee.dmp 110cleanfiles += $(link-out-dir)/tee.dmp 111$(link-out-dir)/tee.dmp: $(link-out-dir)/tee.elf 112 @$(cmd-echo-silent) ' OBJDUMP $@' 113 $(q)$(OBJDUMPcore) -l -x -d $< > $@ 114 115all: $(link-out-dir)/tee.bin 116cleanfiles += $(link-out-dir)/tee.bin 117$(link-out-dir)/tee.bin: $(link-out-dir)/tee.elf 118 @$(cmd-echo-silent) ' GEN $@' 119 $(q)$(OBJCOPYcore) -O binary $< $@ 120 121all: $(link-out-dir)/tee.symb_sizes 122cleanfiles += $(link-out-dir)/tee.symb_sizes 123$(link-out-dir)/tee.symb_sizes: $(link-out-dir)/tee.elf 124 @$(cmd-echo-silent) ' GEN $@' 125 $(q)$(NMcore) --print-size --reverse-sort --size-sort $< > $@ 126 127cleanfiles += $(link-out-dir)/tee.mem_usage 128ifneq ($(filter mem_usage,$(MAKECMDGOALS)),) 129mem_usage: $(link-out-dir)/tee.mem_usage 130 131$(link-out-dir)/tee.mem_usage: $(link-out-dir)/tee.elf 132 @$(cmd-echo-silent) ' GEN $@' 133 $(q)$(PYTHON3) ./scripts/mem_usage.py $< > $@ 134endif 135 136cleanfiles += $(link-out-dir)/tee-raw.bin 137$(link-out-dir)/tee-raw.bin: $(link-out-dir)/tee.elf 138 @$(cmd-echo-silent) ' GEN $@' 139 $(q)$(OBJCOPYcore) -O binary $< $@ 140 141cleanfiles += $(link-out-dir)/tee.srec 142$(link-out-dir)/tee.srec: $(link-out-dir)/tee-raw.bin 143 @$(cmd-echo-silent) ' SREC $@' 144 $(q)$(OBJCOPYcore) -I binary -O srec $(SRECFLAGS) $< $@ 145