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 $@
53
54$(link-out-dir)/version.o:
55	$(call gen-version-o)
56
57-include $(link-out-dir)/.tee.elf.cmd
58define check-link-objs
59$(if $(strip $(filter-out $(link-objs), $(old-link-objs))
60	     $(filter-out $(old-link-objs), $(link-objs))), FORCE_LINK := FORCE)
61endef
62#$(eval $(call check-link-objs))
63
64all: $(link-out-dir)/tee.elf
65cleanfiles += $(link-out-dir)/tee.elf $(link-out-dir)/tee.map
66cleanfiles += $(link-out-dir)/version.o
67cleanfiles += $(link-out-dir)/.buildcount
68cleanfiles += $(link-out-dir)/.tee.elf.cmd
69$(link-out-dir)/tee.elf: $(link-objs) $(libdeps) $(link-script-pp) $(FORCE_LINK)
70	$(call gen-version-o)
71	@echo "old-link-objs := $(link-objs)" >$(link-out-dir)/.tee.elf.cmd
72	@$(cmd-echo-silent) '  LD      $@'
73	$(q)$(LDcore) $(ldargs-tee.elf) -o $@
74
75all: $(link-out-dir)/tee.dmp
76cleanfiles += $(link-out-dir)/tee.dmp
77$(link-out-dir)/tee.dmp: $(link-out-dir)/tee.elf
78	@$(cmd-echo-silent) '  OBJDUMP $@'
79	$(q)$(OBJDUMPcore) -l -x -d $< > $@
80
81all: $(link-out-dir)/tee.bin
82cleanfiles += $(link-out-dir)/tee.bin
83$(link-out-dir)/tee.bin: $(link-out-dir)/tee.elf
84	@$(cmd-echo-silent) '  GEN     $@'
85	$(q)$(OBJCOPYcore) -O binary $< $@
86
87all: $(link-out-dir)/tee.symb_sizes
88cleanfiles += $(link-out-dir)/tee.symb_sizes
89$(link-out-dir)/tee.symb_sizes: $(link-out-dir)/tee.elf
90	@$(cmd-echo-silent) '  GEN     $@'
91	$(q)$(NMcore) --print-size --reverse-sort --size-sort $< > $@
92
93cleanfiles += $(link-out-dir)/tee.mem_usage
94ifneq ($(filter mem_usage,$(MAKECMDGOALS)),)
95mem_usage: $(link-out-dir)/tee.mem_usage
96
97$(link-out-dir)/tee.mem_usage: $(link-out-dir)/tee.elf
98	@$(cmd-echo-silent) '  GEN     $@'
99	$(q)$(PYTHON3) ./scripts/mem_usage.py $< > $@
100endif
101
102cleanfiles += $(link-out-dir)/tee-raw.bin
103$(link-out-dir)/tee-raw.bin: $(link-out-dir)/tee.elf
104	@$(cmd-echo-silent) '  GEN     $@'
105	$(q)$(OBJCOPYcore) -O binary $< $@
106
107cleanfiles += $(link-out-dir)/tee.srec
108$(link-out-dir)/tee.srec: $(link-out-dir)/tee-raw.bin
109	@$(cmd-echo-silent) '  SREC    $@'
110	$(q)$(OBJCOPYcore) -I binary -O srec $(SRECFLAGS) $< $@
111