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# SPDX-License-Identifier: GPL-2.0
# This Makefile generates headers in
# tools/perf/arch/$(SRCARCH)/include/generated/asm from the architecture's
# syscall table. This will either be from the generic syscall table, or from a
# table that is specific to that architecture.
PHONY := all
all:
obj := $(OUTPUT)arch/$(SRCARCH)/include/generated/asm
syscall_abis_32 := common,32
syscall_abis_64 := common,64
syscalltbl := $(srctree)/tools/scripts/syscall.tbl
# let architectures override $(syscall_abis_%) and $(syscalltbl)
-include $(srctree)/tools/perf/arch/$(SRCARCH)/entry/syscalls/Makefile.syscalls
include $(srctree)/tools/build/Build.include
-include $(srctree)/tools/perf/arch/$(SRCARCH)/entry/syscalls/Kbuild
systbl := $(srctree)/tools/perf/scripts/syscalltbl.sh
syscall-y := $(addprefix $(obj)/, $(syscall-y))
# Remove stale wrappers when the corresponding files are removed from generic-y
old-headers := $(wildcard $(obj)/*.h)
unwanted := $(filter-out $(syscall-y),$(old-headers))
quiet_cmd_remove = REMOVE $(unwanted)
cmd_remove = rm -f $(unwanted)
quiet_cmd_systbl = SYSTBL $@
cmd_systbl = $(CONFIG_SHELL) $(systbl) \
$(if $(systbl-args-$*),$(systbl-args-$*),$(systbl-args)) \
--abis $(subst $(space),$(comma),$(strip $(syscall_abis_$*))) \
$< $@
all: $(syscall-y)
$(if $(unwanted),$(call cmd,remove))
@:
$(obj)/syscalls_%.h: $(syscalltbl) $(systbl) FORCE
$(call if_changed,systbl)
targets := $(syscall-y)
# Create output directory. Skip it if at least one old header exists
# since we know the output directory already exists.
ifeq ($(old-headers),)
$(shell mkdir -p $(obj))
endif
PHONY += FORCE
FORCE:
existing-targets := $(wildcard $(sort $(targets)))
-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
.PHONY: $(PHONY)
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