1link-out-dir = $(out-dir)/core 2 3link-script-dummy = $(arch-dir)/kernel/link_dummy.ld 4link-script = $(if $(wildcard $(platform-dir)/kern.ld.S), \ 5 $(platform-dir)/kern.ld.S, \ 6 $(arch-dir)/kernel/kern.ld.S) 7link-script-pp = $(link-out-dir)/kern.ld 8link-script-dep = $(link-out-dir)/.kern.ld.d 9 10AWK = awk 11 12link-ldflags = $(LDFLAGS) 13ifeq ($(CFG_CORE_ASLR),y) 14link-ldflags += -pie -Bsymbolic -z notext -z norelro $(ldflag-apply-dynamic-relocs) 15endif 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 20 21link-ldadd = $(LDADD) 22link-ldadd += $(ldflags-external) 23link-ldadd += $(libdeps) 24link-objs := $(filter-out \ 25 $(out-dir)/$(arch-dir)/kernel/link_dummies_paged.o \ 26 $(out-dir)/$(arch-dir)/kernel/link_dummies_init.o, \ 27 $(objs)) 28link-objs-init := $(filter-out \ 29 $(out-dir)/$(arch-dir)/kernel/link_dummies_init.o, \ 30 $(objs)) 31ldargs-tee.elf := $(link-ldflags) $(link-objs) $(link-out-dir)/version.o \ 32 $(link-ldadd) $(libgcccore) 33 34link-script-cppflags := \ 35 $(filter-out $(CPPFLAGS_REMOVE) $(cppflags-remove), \ 36 $(nostdinccore) $(CPPFLAGS) \ 37 $(addprefix -I,$(incdirscore) $(link-out-dir)) \ 38 $(cppflagscore)) 39 40ldargs-all_objs := -T $(link-script-dummy) --no-check-sections \ 41 $(link-objs) $(link-ldadd) $(libgcccore) 42cleanfiles += $(link-out-dir)/all_objs.o 43$(link-out-dir)/all_objs.o: $(objs) $(libdeps) $(MAKEFILE_LIST) 44 @$(cmd-echo-silent) ' LD $@' 45 $(q)$(LDcore) $(ldargs-all_objs) -o $@ 46 47cleanfiles += $(link-out-dir)/unpaged_entries.txt 48$(link-out-dir)/unpaged_entries.txt: $(link-out-dir)/all_objs.o 49 @$(cmd-echo-silent) ' GEN $@' 50 $(q)$(NMcore) $< | \ 51 $(AWK) '/ ____keep_pager/ { printf "-u%s ", $$3 }' > $@ 52 53unpaged-ldargs = -T $(link-script-dummy) --no-check-sections --gc-sections 54unpaged-ldadd := $(objs) $(link-ldadd) $(libgcccore) 55cleanfiles += $(link-out-dir)/unpaged.o 56$(link-out-dir)/unpaged.o: $(link-out-dir)/unpaged_entries.txt 57 @$(cmd-echo-silent) ' LD $@' 58 $(q)$(LDcore) $(unpaged-ldargs) \ 59 `cat $(link-out-dir)/unpaged_entries.txt` \ 60 $(unpaged-ldadd) -o $@ 61 62cleanfiles += $(link-out-dir)/text_unpaged.ld.S 63$(link-out-dir)/text_unpaged.ld.S: $(link-out-dir)/unpaged.o 64 @$(cmd-echo-silent) ' GEN $@' 65 $(q)$(READELFcore) -S -W $< | \ 66 $(PYTHON3) ./scripts/gen_ld_sects.py .text. > $@ 67 68cleanfiles += $(link-out-dir)/rodata_unpaged.ld.S 69$(link-out-dir)/rodata_unpaged.ld.S: $(link-out-dir)/unpaged.o 70 @$(cmd-echo-silent) ' GEN $@' 71 $(q)$(READELFcore) -S -W $< | \ 72 $(PYTHON3) ./scripts/gen_ld_sects.py .rodata. > $@ 73 74 75cleanfiles += $(link-out-dir)/init_entries.txt 76$(link-out-dir)/init_entries.txt: $(link-out-dir)/all_objs.o 77 @$(cmd-echo-silent) ' GEN $@' 78 $(q)$(NMcore) $< | \ 79 $(AWK) '/ ____keep_init/ { printf "-u%s ", $$3 }' > $@ 80 81init-ldargs := -T $(link-script-dummy) --no-check-sections --gc-sections 82init-ldadd := $(link-objs-init) $(link-out-dir)/version.o $(link-ldadd) \ 83 $(libgcccore) 84cleanfiles += $(link-out-dir)/init.o 85$(link-out-dir)/init.o: $(link-out-dir)/init_entries.txt 86 $(call gen-version-o) 87 @$(cmd-echo-silent) ' LD $@' 88 $(q)$(LDcore) $(init-ldargs) \ 89 `cat $(link-out-dir)/init_entries.txt` \ 90 $(init-ldadd) -o $@ 91 92cleanfiles += $(link-out-dir)/text_init.ld.S 93$(link-out-dir)/text_init.ld.S: $(link-out-dir)/init.o 94 @$(cmd-echo-silent) ' GEN $@' 95 $(q)$(READELFcore) -S -W $< | \ 96 $(PYTHON3) ./scripts/gen_ld_sects.py .text. > $@ 97 98cleanfiles += $(link-out-dir)/rodata_init.ld.S 99$(link-out-dir)/rodata_init.ld.S: $(link-out-dir)/init.o 100 @$(cmd-echo-silent) ' GEN $@' 101 $(q)$(READELFcore) -S -W $< | $(PYTHON3) ./scripts/gen_ld_sects.py .rodata. > $@ 102 103-include $(link-script-dep) 104 105link-script-extra-deps += $(link-out-dir)/text_unpaged.ld.S 106link-script-extra-deps += $(link-out-dir)/rodata_unpaged.ld.S 107link-script-extra-deps += $(link-out-dir)/text_init.ld.S 108link-script-extra-deps += $(link-out-dir)/rodata_init.ld.S 109link-script-extra-deps += $(conf-file) 110cleanfiles += $(link-script-pp) $(link-script-dep) 111$(link-script-pp): $(link-script) $(link-script-extra-deps) 112 @$(cmd-echo-silent) ' CPP $@' 113 @mkdir -p $(dir $@) 114 $(q)$(CPPcore) -P -MT $@ -MD -MF $(link-script-dep) \ 115 $(link-script-cppflags) $< -o $@ 116 117define update-buildcount 118 @$(cmd-echo-silent) ' UPD $(1)' 119 $(q)if [ ! -f $(1) ]; then \ 120 mkdir -p $(dir $(1)); \ 121 echo 1 >$(1); \ 122 else \ 123 expr 0`cat $(1)` + 1 >$(1); \ 124 fi 125endef 126 127# filter-out to workaround objdump warning 128version-o-cflags = $(filter-out -g3,$(core-platform-cflags) \ 129 $(platform-cflags) $(cflagscore)) 130# SOURCE_DATE_EPOCH defined for reproducible builds 131ifneq ($(SOURCE_DATE_EPOCH),) 132date-opts = -d @$(SOURCE_DATE_EPOCH) 133endif 134DATE_STR = `LANG=C date -u $(date-opts)` 135BUILD_COUNT_STR = `cat $(link-out-dir)/.buildcount` 136CORE_CC_VERSION = `$(CCcore) -v 2>&1 | grep "version " | sed 's/ *$$//'` 137define gen-version-o 138 $(call update-buildcount,$(link-out-dir)/.buildcount) 139 @$(cmd-echo-silent) ' GEN $(link-out-dir)/version.o' 140 $(q)echo -e "const char core_v_str[] =" \ 141 "\"$(TEE_IMPL_VERSION) \"" \ 142 "\"($(CORE_CC_VERSION)) \"" \ 143 "\"#$(BUILD_COUNT_STR) \"" \ 144 "\"$(DATE_STR) \"" \ 145 "\"$(CFG_KERN_LINKER_ARCH)\";\n" \ 146 | $(CCcore) $(version-o-cflags) \ 147 -xc - -c -o $(link-out-dir)/version.o 148endef 149$(link-out-dir)/version.o: 150 $(call gen-version-o) 151 152-include $(link-out-dir)/.tee.elf.cmd 153define check-link-objs 154$(if $(strip $(filter-out $(link-objs), $(old-link-objs)) 155 $(filter-out $(old-link-objs), $(link-objs))), FORCE_LINK := FORCE) 156endef 157$(eval $(call check-link-objs)) 158 159all: $(link-out-dir)/tee.elf 160cleanfiles += $(link-out-dir)/tee.elf $(link-out-dir)/tee.map 161cleanfiles += $(link-out-dir)/version.o 162cleanfiles += $(link-out-dir)/.buildcount 163cleanfiles += $(link-out-dir)/.tee.elf.cmd 164$(link-out-dir)/tee.elf: $(link-objs) $(libdeps) $(link-script-pp) $(FORCE_LINK) 165 @echo "old-link-objs := $(link-objs)" >$(link-out-dir)/.tee.elf.cmd 166 @$(cmd-echo-silent) ' LD $@' 167 $(q)$(LDcore) $(ldargs-tee.elf) -o $@ 168 169all: $(link-out-dir)/tee.dmp 170cleanfiles += $(link-out-dir)/tee.dmp 171$(link-out-dir)/tee.dmp: $(link-out-dir)/tee.elf 172 @$(cmd-echo-silent) ' OBJDUMP $@' 173 $(q)$(OBJDUMPcore) -l -x -d $< > $@ 174 175cleanfiles += $(link-out-dir)/tee-pager.bin 176$(link-out-dir)/tee-pager.bin: $(link-out-dir)/tee.elf scripts/gen_tee_bin.py 177 @echo Warning: $@ is deprecated 178 @$(cmd-echo-silent) ' GEN $@' 179 $(q)$(PYTHON3) scripts/gen_tee_bin.py --input $< --out_tee_pager_bin $@ 180 181cleanfiles += $(link-out-dir)/tee-pageable.bin 182$(link-out-dir)/tee-pageable.bin: $(link-out-dir)/tee.elf scripts/gen_tee_bin.py 183 @echo Warning: $@ is deprecated 184 @$(cmd-echo-silent) ' GEN $@' 185 $(q)$(PYTHON3) scripts/gen_tee_bin.py --input $< --out_tee_pageable_bin $@ 186 187all: $(link-out-dir)/tee.bin 188cleanfiles += $(link-out-dir)/tee.bin 189$(link-out-dir)/tee.bin: $(link-out-dir)/tee.elf scripts/gen_tee_bin.py 190 @$(cmd-echo-silent) ' GEN $@' 191 $(q)$(PYTHON3) scripts/gen_tee_bin.py --input $< --out_tee_bin $@ 192 193all: $(link-out-dir)/tee-header_v2.bin 194cleanfiles += $(link-out-dir)/tee-header_v2.bin 195$(link-out-dir)/tee-header_v2.bin: $(link-out-dir)/tee.elf \ 196 scripts/gen_tee_bin.py 197 @$(cmd-echo-silent) ' GEN $@' 198 $(q)$(PYTHON3) scripts/gen_tee_bin.py --input $< --out_header_v2 $@ 199 200all: $(link-out-dir)/tee-pager_v2.bin 201cleanfiles += $(link-out-dir)/tee-pager_v2.bin 202$(link-out-dir)/tee-pager_v2.bin: $(link-out-dir)/tee.elf scripts/gen_tee_bin.py 203 @$(cmd-echo-silent) ' GEN $@' 204 $(q)$(PYTHON3) scripts/gen_tee_bin.py --input $< --out_pager_v2 $@ 205 206all: $(link-out-dir)/tee-pageable_v2.bin 207cleanfiles += $(link-out-dir)/tee-pageable_v2.bin 208$(link-out-dir)/tee-pageable_v2.bin: $(link-out-dir)/tee.elf \ 209 scripts/gen_tee_bin.py 210 @$(cmd-echo-silent) ' GEN $@' 211 $(q)$(PYTHON3) scripts/gen_tee_bin.py --input $< --out_pageable_v2 $@ 212 213all: $(link-out-dir)/tee.symb_sizes 214cleanfiles += $(link-out-dir)/tee.symb_sizes 215$(link-out-dir)/tee.symb_sizes: $(link-out-dir)/tee.elf 216 @$(cmd-echo-silent) ' GEN $@' 217 $(q)$(NMcore) --print-size --reverse-sort --size-sort $< > $@ 218 219cleanfiles += $(link-out-dir)/tee.mem_usage 220ifneq ($(filter mem_usage,$(MAKECMDGOALS)),) 221mem_usage: $(link-out-dir)/tee.mem_usage 222 223$(link-out-dir)/tee.mem_usage: $(link-out-dir)/tee.elf 224 @$(cmd-echo-silent) ' GEN $@' 225 $(q)$(PYTHON3) ./scripts/mem_usage.py $< > $@ 226endif 227 228cleanfiles += $(link-out-dir)/tee-raw.bin 229$(link-out-dir)/tee-raw.bin: $(link-out-dir)/tee.elf scripts/gen_tee_bin.py 230 @$(cmd-echo-silent) ' GEN $@' 231 $(q)scripts/gen_tee_bin.py --input $< --out_tee_raw_bin $@ 232 233cleanfiles += $(link-out-dir)/tee.srec 234$(link-out-dir)/tee.srec: $(link-out-dir)/tee-raw.bin 235 @$(cmd-echo-silent) ' SREC $@' 236 $(q)$(OBJCOPYcore) -I binary -O srec $< $@ 237