diff options
| author | Lluís Vilanova <vilanova@ac.upc.edu> | 2014-05-30 14:11:56 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-08-12 14:26:12 +0100 |
| commit | 341ea69185239eeb7da73434ac2803790a429e9c (patch) | |
| tree | 3803d2f7c4c9b7aeb3295f021103e3f7f3966f52 | |
| parent | 707c8a98e4c42a559ad8d1ec0e77e28ffd666346 (diff) | |
trace: [tcg] Define TCG tracing helper routines
Generates file "trace/generated-helpers.c" with TCG helper definitions to trace
events in guest code at execution time.
The helpers ('helper_trace_${event}_exec_proxy') cast the TCG-compatible native
argument types to their original types (as defined in "trace-events") and call
the tracing routine ('trace_${event}_exec').
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | Makefile | 1 | ||||
| -rw-r--r-- | Makefile.objs | 7 | ||||
| -rw-r--r-- | Makefile.target | 5 | ||||
| -rw-r--r-- | scripts/tracetool/format/tcg_helper_c.py | 50 | ||||
| -rw-r--r-- | trace/Makefile.objs | 12 |
6 files changed, 75 insertions, 1 deletions
diff --git a/.gitignore b/.gitignore index da56d700c8..643b34b235 100644 --- a/.gitignore +++ b/.gitignore @@ -12,6 +12,7 @@ /trace/generated-events.h /trace/generated-events.c /trace/generated-helpers.h +/trace/generated-helpers.c /trace/generated-ust-provider.h /trace/generated-ust.c /libcacard/trace/generated-tracers.c @@ -58,6 +58,7 @@ endif GENERATED_SOURCES += trace/generated-tracers.c GENERATED_HEADERS += trace/generated-helpers.h +GENERATED_SOURCES += trace/generated-helpers.c ifeq ($(findstring ust,$(TRACE_BACKENDS)),ust) GENERATED_HEADERS += trace/generated-ust-provider.h diff --git a/Makefile.objs b/Makefile.objs index 1f76cea569..84b86af879 100644 --- a/Makefile.objs +++ b/Makefile.objs @@ -1,7 +1,7 @@ ####################################################################### # Common libraries for tools and emulators stub-obj-y = stubs/ -util-obj-y = util/ qobject/ qapi/ trace/ +util-obj-y = util/ qobject/ qapi/ ####################################################################### # block-obj-y is code used by both qemu system emulation and qemu-img @@ -107,6 +107,11 @@ version-obj-$(CONFIG_WIN32) += $(BUILD_DIR)/version.o version-lobj-$(CONFIG_WIN32) += $(BUILD_DIR)/version.lo ###################################################################### +# tracing +util-obj-y += trace/ +target-obj-y += trace/ + +###################################################################### # guest agent # FIXME: a few definitions from qapi-types.o/qapi-visit.o are needed diff --git a/Makefile.target b/Makefile.target index 44fa6a2d5c..1e8d7abcb3 100644 --- a/Makefile.target +++ b/Makefile.target @@ -159,15 +159,20 @@ endif # CONFIG_SOFTMMU dummy := $(call unnest-vars,,obj-y) all-obj-y := $(obj-y) +target-obj-y := block-obj-y := common-obj-y := include $(SRC_PATH)/Makefile.objs +dummy := $(call unnest-vars,,target-obj-y) +target-obj-y-save := $(target-obj-y) dummy := $(call unnest-vars,.., \ block-obj-y \ block-obj-m \ common-obj-y \ common-obj-m) +target-obj-y := $(target-obj-y-save) all-obj-y += $(common-obj-y) +all-obj-y += $(target-obj-y) all-obj-$(CONFIG_SOFTMMU) += $(block-obj-y) # build either PROG or PROGW diff --git a/scripts/tracetool/format/tcg_helper_c.py b/scripts/tracetool/format/tcg_helper_c.py new file mode 100644 index 0000000000..96655a0590 --- /dev/null +++ b/scripts/tracetool/format/tcg_helper_c.py @@ -0,0 +1,50 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +""" +Generate trace/generated-helpers.c. +""" + +__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. */', + '', + '#include "qemu-common.h"', + '#include "trace.h"', + '#include "exec/helper-proto.h"', + '', + ) + + for e in events: + if "tcg-exec" not in e.properties: + continue + + # tracetool.generate always transforms types to host + e_args = e.original.args + + values = ["(%s)%s" % (t, n) + for t, n in e.args.transform(TCG_2_TCG_HELPER_DEF)] + + out('void %(name_tcg)s(%(args)s)', + '{', + ' %(name)s(%(values)s);', + '}', + name_tcg="helper_%s_proxy" % e.api(), + name=e.api(), + args=e_args.transform(HOST_2_TCG_COMPAT, TCG_2_TCG_HELPER_DEF), + values=", ".join(values), + ) diff --git a/trace/Makefile.objs b/trace/Makefile.objs index 0a2e6cd71c..2d36142df0 100644 --- a/trace/Makefile.objs +++ b/trace/Makefile.objs @@ -107,6 +107,18 @@ $(obj)/generated-helpers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/conf < $< > $@," GEN $(patsubst %-timestamp,%,$@)") @cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@) +$(obj)/generated-helpers.c: $(obj)/generated-helpers.c-timestamp +$(obj)/generated-helpers.c-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak + $(call quiet-command,$(TRACETOOL) \ + --format=tcg-helper-c \ + --backend=$(TRACE_BACKENDS) \ + < $< > $@," GEN $(patsubst %-timestamp,%,$@)") + @cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@) + +$(obj)/generated-helpers.o: $(obj)/generated-helpers.c + +target-obj-y += generated-helpers.o + ###################################################################### # Backend code |