# -*- mode: makefile -*-

######################################################################
# tracetool source files
# Every rule that invokes tracetool must depend on this so code is regenerated
# if tracetool itself changes.

tracetool-y = $(SRC_PATH)/scripts/tracetool.py
tracetool-y += $(shell find $(SRC_PATH)/scripts/tracetool -name "*.py")

$(BUILD_DIR)/trace-events-all: $(trace-events-y:%=$(SRC_PATH)/%)
	$(call quiet-command,cat $^ > $@)

######################################################################
# Auto-generated event descriptions for LTTng ust code

ifeq ($(findstring ust,$(TRACE_BACKENDS)),ust)

$(obj)/generated-ust-provider.h: $(obj)/generated-ust-provider.h-timestamp
	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-ust-provider.h-timestamp: $(BUILD_DIR)/trace-events-all $(tracetool-y)
	$(call quiet-command,$(TRACETOOL) \
		--format=ust-events-h \
		--backends=$(TRACE_BACKENDS) \
		$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")

$(obj)/generated-ust.c: $(obj)/generated-ust.c-timestamp $(BUILD_DIR)/config-host.mak
	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-ust.c-timestamp: $(BUILD_DIR)/trace-events-all $(tracetool-y)
	$(call quiet-command,$(TRACETOOL) \
		--format=ust-events-c \
		--backends=$(TRACE_BACKENDS) \
		$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")

$(obj)/generated-tracers.h: $(obj)/generated-ust-provider.h
$(obj)/generated-tracers.c: $(obj)/generated-ust.c

endif


######################################################################
# Auto-generated tracing routines

##################################################
# Execution level

$(obj)/generated-tracers.h: $(obj)/generated-tracers.h-timestamp
	@cmp -s $< $@ || cp $< $@
$(obj)/generated-tracers.h-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
	$(call quiet-command,$(TRACETOOL) \
		--format=h \
		--backends=$(TRACE_BACKENDS) \
		$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")

##############################
# non-DTrace

$(obj)/generated-tracers.c: $(obj)/generated-tracers.c-timestamp
	@cmp -s $< $@ || cp $< $@
$(obj)/generated-tracers.c-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
	$(call quiet-command,$(TRACETOOL) \
		--format=c \
		--backends=$(TRACE_BACKENDS) \
		$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")

$(obj)/generated-tracers.o: $(obj)/generated-tracers.c $(obj)/generated-tracers.h

##############################
# DTrace

# Normal practice is to name DTrace probe file with a '.d' extension
# but that gets picked up by QEMU's Makefile as an external dependency
# rule file. So we use '.dtrace' instead
ifeq ($(findstring dtrace,$(TRACE_BACKENDS)),dtrace)

$(obj)/generated-tracers-dtrace.dtrace: $(obj)/generated-tracers-dtrace.dtrace-timestamp
	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-tracers-dtrace.dtrace-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
	$(call quiet-command,$(TRACETOOL) \
		--format=d \
		--backends=$(TRACE_BACKENDS) \
		$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")

$(obj)/generated-tracers-dtrace.h: $(obj)/generated-tracers-dtrace.dtrace
	$(call quiet-command,dtrace -o $@ -h -s $<,"GEN","$@")

$(obj)/generated-tracers-dtrace.o: $(obj)/generated-tracers-dtrace.dtrace

util-obj-y += generated-tracers-dtrace.o
endif

##################################################
# Translation level

$(obj)/generated-helpers-wrappers.h: $(obj)/generated-helpers-wrappers.h-timestamp
	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-helpers-wrappers.h-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
	$(call quiet-command,$(TRACETOOL) \
		--format=tcg-helper-wrapper-h \
		--backend=$(TRACE_BACKENDS) \
		$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")

$(obj)/generated-helpers.h: $(obj)/generated-helpers.h-timestamp
	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-helpers.h-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
	$(call quiet-command,$(TRACETOOL) \
		--format=tcg-helper-h \
		--backend=$(TRACE_BACKENDS) \
		$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")

$(obj)/generated-helpers.c: $(obj)/generated-helpers.c-timestamp
	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-helpers.c-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
	$(call quiet-command,$(TRACETOOL) \
		--format=tcg-helper-c \
		--backend=$(TRACE_BACKENDS) \
		$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")

$(obj)/generated-helpers.o: $(obj)/generated-helpers.c

target-obj-y += generated-helpers.o


$(obj)/generated-tcg-tracers.h: $(obj)/generated-tcg-tracers.h-timestamp
	@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-tcg-tracers.h-timestamp: $(BUILD_DIR)/trace-events-all $(BUILD_DIR)/config-host.mak $(tracetool-y)
	$(call quiet-command,$(TRACETOOL) \
		--format=tcg-h \
		--backend=$(TRACE_BACKENDS) \
		$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")


######################################################################
# Backend code

util-obj-y += generated-tracers.o
util-obj-$(CONFIG_TRACE_SIMPLE) += simple.o
util-obj-$(CONFIG_TRACE_FTRACE) += ftrace.o
util-obj-$(CONFIG_TRACE_UST) += generated-ust.o
util-obj-y += control.o
target-obj-y += control-target.o
util-obj-y += qmp.o