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