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Application.mk:define application attribute in elf symbol

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Emit --defsym for nx_stacksize, nx_priority (and nx_uid/nx_gid/nx_mode
under CONFIG_SCHED_USER_IDENTITY) into MODLDFLAGS so the ELF binary
loader can recover the application's configured attributes at load time.

Also skip builtin registration for separately-built module ELFs
(BUILD_MODULE instead of DYNLIB).

Signed-off-by: anjiahao <anjiahao@xiaomi.com>
This commit is contained in:
anjiahao 2026-07-15 16:11:18 +08:00 • committed by Alan C. Assis
parent 593bfca047
commit 067b0ccf28
1 changed files with 27 additions and 2 deletions
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29
Application.mk
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@ -134,7 +134,32 @@ ifneq ($(strip $(PROGNAME)),)
$(if $(word $i,$(GID)),$(word $i,$(GID)),$(lastword $(GID)))) \
$(eval MODE_$(word $i,$(REGLIST)) := \
$(if $(word $i,$(MODE)),$(word $i,$(MODE)),$(lastword $(MODE)))) \
$(eval STACKSIZE_$(word $i,$(PROGLIST)) := $(STACKSIZE_$(word $i,$(REGLIST)))) \
$(eval PRIORITY_$(word $i,$(PROGLIST)) := $(PRIORITY_$(word $i,$(REGLIST)))) \
$(eval UID_$(word $i,$(PROGLIST)) := $(UID_$(word $i,$(REGLIST)))) \
$(eval GID_$(word $i,$(PROGLIST)) := $(GID_$(word $i,$(REGLIST)))) \
$(eval MODE_$(word $i,$(PROGLIST)) := $(MODE_$(word $i,$(REGLIST)))) \
)
# Emit the application's configured attributes as absolute ELF symbols
# (nx_stacksize, nx_priority, and nx_uid/nx_gid/nx_mode under
# CONFIG_SCHED_USER_IDENTITY) so the binary loader can recover them.
# Per-target so each PROGLIST entry picks up its own STACKSIZE_/PRIORITY_.
$(PROGLIST): SYM_PRIORITY = $(if $(filter SCHED_PRIORITY_DEFAULT,$(PRIORITY_$@)),0,$(PRIORITY_$@))
$(PROGLIST): MODLDFLAGS += \
$(if $(STACKSIZE_$@),--defsym nx_stacksize=$(STACKSIZE_$@)) \
$(if $(PRIORITY_$@),--defsym nx_priority=$(SYM_PRIORITY))
ifeq ($(CONFIG_SCHED_USER_IDENTITY),y)
$(PROGLIST): MODLDFLAGS += \
$(if $(UID_$@),--defsym nx_uid=$(UID_$@)) \
$(if $(GID_$@),--defsym nx_gid=$(GID_$@)) \
$(if $(MODE_$@),--defsym nx_mode=$(MODE_$@))
endif
# Keep the attribute symbols through --strip-unneeded so the binary loader
# can still read them from the stripped runtime image in bin/.
$(PROGLIST): NX_KEEP = $(if $(STACKSIZE_$@),-K nx_stacksize) $(if $(PRIORITY_$@),-K nx_priority) $(if $(UID_$@),-K nx_uid) $(if $(GID_$@),-K nx_gid) $(if $(MODE_$@),-K nx_mode)
endif
# Condition flags
@ -149,7 +174,7 @@ ifeq ($(WASM_BUILD),y)
DO_REGISTRATION = n
endif
ifeq ($(DYNLIB),y)
ifeq ($(BUILD_MODULE),y)
DO_REGISTRATION = n
endif
@ -311,7 +336,7 @@ $(PROGLIST): $(MAINCOBJ) $(MAINCXXOBJ) $(MAINRUSTOBJ) $(MAINZIGOBJ) $(MAINDOBJ)
ifneq ($(CONFIG_DEBUG_SYMBOLS),)
$(Q) mkdir -p $(BINDIR_DEBUG)
$(Q) cp $@ $(BINDIR_DEBUG)
$(Q) $(MODULESTRIP) $@
$(Q) $(MODULESTRIP) $(NX_KEEP) $@
endif
install:: $(PROGLIST)