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| author | Lluís Vilanova <vilanova@ac.upc.edu> | 2014-05-30 14:12:13 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-08-12 14:26:12 +0100 |
| commit | 465830fbd9be22995b34d7b3f8cd35572e1f8a36 (patch) | |
| tree | 7e391213bdc5e2b018c7fdff5b0a87d23bada6a8 | |
| parent | 76b53aa32457e63957540d99149901989c075d3c (diff) | |
| download | qemu-465830fbd9be22995b34d7b3f8cd35572e1f8a36.tar.gz | |
trace: [tcg] Generate TCG tracing routines
Generate header "trace/generated-tcg-tracers.h" with the necessary routines for
tracing events in guest code:
* trace_${event}_tcg
Convenience wrapper that calls the translation-time tracer
'trace_${event}_trans', and calls 'gen_helper_trace_${event}_exec to
generate the TCG code to later trace the event at execution time.
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 | 2 | ||||
| -rw-r--r-- | include/trace-tcg.h | 7 | ||||
| -rw-r--r-- | scripts/tracetool/format/tcg_h.py | 57 | ||||
| -rw-r--r-- | trace/Makefile.objs | 9 |
5 files changed, 76 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore index 6631c57b8d..e32a58417a 100644 --- a/.gitignore +++ b/.gitignore @@ -14,6 +14,7 @@ /trace/generated-helpers-wrappers.h /trace/generated-helpers.h /trace/generated-helpers.c +/trace/generated-tcg-tracers.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-tcg-tracers.h + GENERATED_HEADERS += trace/generated-helpers-wrappers.h GENERATED_HEADERS += trace/generated-helpers.h GENERATED_SOURCES += trace/generated-helpers.c diff --git a/include/trace-tcg.h b/include/trace-tcg.h new file mode 100644 index 0000000000..6f6bdbb44a --- /dev/null +++ b/include/trace-tcg.h @@ -0,0 +1,7 @@ +#ifndef TRACE_TCG_H +#define TRACE_TCG_H + +#include "trace/generated-tcg-tracers.h" +#include "trace/generated-events.h" + +#endif /* TRACE_TCG_H */ diff --git a/scripts/tracetool/format/tcg_h.py b/scripts/tracetool/format/tcg_h.py new file mode 100644 index 0000000000..f676b66622 --- /dev/null +++ b/scripts/tracetool/format/tcg_h.py @@ -0,0 +1,57 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +""" +Generate .h file for TCG code generation. +""" + +__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 + + +def generate(events, backend): + out('/* This file is autogenerated by tracetool, do not edit. */', + '/* You must include this file after the inclusion of helper.h */', + '', + '#ifndef TRACE__GENERATED_TCG_TRACERS_H', + '#define TRACE__GENERATED_TCG_TRACERS_H', + '', + '#include <stdint.h>', + '', + '#include "trace.h"', + '#include "exec/helper-proto.h"', + '', + ) + + for e in events: + # just keep one of them + if "tcg-trans" not in e.properties: + continue + + # get the original event definition + e = e.original.original + + out('static inline void %(name_tcg)s(%(args)s)', + '{', + name_tcg=e.api(e.QEMU_TRACE_TCG), + args=e.args) + + if "disable" not in e.properties: + out(' %(name_trans)s(%(argnames_trans)s);', + ' gen_helper_%(name_exec)s(%(argnames_exec)s);', + name_trans=e.event_trans.api(e.QEMU_TRACE), + name_exec=e.event_exec.api(e.QEMU_TRACE), + argnames_trans=", ".join(e.event_trans.args.names()), + argnames_exec=", ".join(e.event_exec.args.names())) + + out('}') + + out('', + '#endif /* TRACE__GENERATED_TCG_TRACERS_H */') diff --git a/trace/Makefile.objs b/trace/Makefile.objs index 72cc3f57d1..387f191fd4 100644 --- a/trace/Makefile.objs +++ b/trace/Makefile.objs @@ -128,6 +128,15 @@ $(obj)/generated-helpers.o: $(obj)/generated-helpers.c target-obj-y += generated-helpers.o +$(obj)/generated-tcg-tracers.h: $(obj)/generated-tcg-tracers.h-timestamp +$(obj)/generated-tcg-tracers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak + $(call quiet-command,$(TRACETOOL) \ + --format=tcg-h \ + --backend=$(TRACE_BACKENDS) \ + < $< > $@," GEN $(patsubst %-timestamp,%,$@)") + @cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@) + + ###################################################################### # Backend code |