Commit 707c8a98 authored by Lluís Vilanova's avatar Lluís Vilanova Committed by Stefan Hajnoczi

trace: [tcg] Declare TCG tracing helper routines

Generates file "trace/generated-helpers.h" with TCG helper declarations to trace
events in guest code at execution time ('trace_${event}_exec_proxy').
Signed-off-by: default avatarLluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
parent b2b36c22
......@@ -11,6 +11,7 @@
/trace/generated-tracers.dtrace
/trace/generated-events.h
/trace/generated-events.c
/trace/generated-helpers.h
/trace/generated-ust-provider.h
/trace/generated-ust.c
/libcacard/trace/generated-tracers.c
......
......@@ -57,6 +57,8 @@ GENERATED_HEADERS += trace/generated-tracers-dtrace.h
endif
GENERATED_SOURCES += trace/generated-tracers.c
GENERATED_HEADERS += trace/generated-helpers.h
ifeq ($(findstring ust,$(TRACE_BACKENDS)),ust)
GENERATED_HEADERS += trace/generated-ust-provider.h
GENERATED_SOURCES += trace/generated-ust.c
......
......@@ -227,6 +227,7 @@ class Event(object):
fmt)
QEMU_TRACE = "trace_%(name)s"
QEMU_TRACE_TCG = QEMU_TRACE + "_tcg"
def api(self, fmt=None):
if fmt is None:
......
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Generate trace/generated-helpers.h.
"""
__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
__copyright__ = "Copyright 2012-2014, Lluís Vilanova <vilanova@ac.upc.edu>"
__license__ = "GPL version 2 or (at your option) any later version"
__maintainer__ = "Stefan Hajnoczi"
__email__ = "stefanha@linux.vnet.ibm.com"
from tracetool import out
from tracetool.transform import *
def generate(events, backend):
events = [e for e in events
if "disable" not in e.properties]
out('/* This file is autogenerated by tracetool, do not edit. */',
'',
)
for e in events:
if "tcg-exec" not in e.properties:
continue
# tracetool.generate always transforms types to host
e_args = e.original.args
# TCG helper proxy declaration
fmt = "DEF_HELPER_FLAGS_%(argc)d(%(name)s, %(flags)svoid%(types)s)"
args = e_args.transform(HOST_2_TCG_COMPAT, HOST_2_TCG,
TCG_2_TCG_HELPER_DECL)
types = ", ".join(args.types())
if types != "":
types = ", " + types
flags = "TCG_CALL_NO_RWG, "
out(fmt,
flags=flags,
argc=len(args),
name=e.api() + "_proxy",
types=types,
)
......@@ -49,6 +49,9 @@ util-obj-y += generated-events.o
######################################################################
# Auto-generated tracing routines
##################################################
# Execution level
$(obj)/generated-tracers.h: $(obj)/generated-tracers.h-timestamp
@cmp -s $< $@ || cp $< $@
$(obj)/generated-tracers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
......@@ -57,8 +60,8 @@ $(obj)/generated-tracers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/conf
--backends=$(TRACE_BACKENDS) \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
######################################################################
# Auto-generated tracing routines (non-DTrace)
##############################
# non-DTrace
$(obj)/generated-tracers.c: $(obj)/generated-tracers.c-timestamp
@cmp -s $< $@ || cp $< $@
......@@ -70,9 +73,8 @@ $(obj)/generated-tracers.c-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/conf
$(obj)/generated-tracers.o: $(obj)/generated-tracers.c $(obj)/generated-tracers.h
######################################################################
# Auto-generated DTrace code
##############################
# 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
......@@ -94,6 +96,18 @@ $(obj)/generated-tracers-dtrace.o: $(obj)/generated-tracers-dtrace.dtrace
util-obj-y += generated-tracers-dtrace.o
endif
##################################################
# Translation level
$(obj)/generated-helpers.h: $(obj)/generated-helpers.h-timestamp
$(obj)/generated-helpers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
$(call quiet-command,$(TRACETOOL) \
--format=tcg-helper-h \
--backend=$(TRACE_BACKENDS) \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
######################################################################
# Backend code
......
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