Signed-off-by: Harsh Prateek Bora <ha...@linux.vnet.ibm.com>
Signed-off-by: Lluís Vilanova <vilan...@ac.upc.edu>
---
Makefile.objs | 6
Makefile.target | 10 -
configure | 4
scripts/tracetool | 648 --------------------------------------------------
scripts/tracetool.py | 533 +++++++++++++++++++++++++++++++++++++++++
5 files changed, 543 insertions(+), 658 deletions(-)
delete mode 100755 scripts/tracetool
create mode 100755 scripts/tracetool.py
diff --git a/Makefile.objs b/Makefile.objs
index 5f0b3f7..a718963 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -357,12 +357,12 @@ else
trace.h: trace.h-timestamp
endif
trace.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
- $(call quiet-command,sh $(SRC_PATH)/scripts/tracetool
--$(TRACE_BACKEND) -h < $< > $@," GEN trace.h")
+ $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/tracetool.py
--backend=$(TRACE_BACKEND) -h < $< > $@," GEN trace.h")
@cmp -s $@ trace.h || cp $@ trace.h
trace.c: trace.c-timestamp
trace.c-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
- $(call quiet-command,sh $(SRC_PATH)/scripts/tracetool
--$(TRACE_BACKEND) -c < $< > $@," GEN trace.c")
+ $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/tracetool.py
--backend=$(TRACE_BACKEND) -c < $< > $@," GEN trace.c")
@cmp -s $@ trace.c || cp $@ trace.c
trace.o: trace.c $(GENERATED_HEADERS)
@@ -375,7 +375,7 @@ trace-dtrace.h: trace-dtrace.dtrace
# rule file. So we use '.dtrace' instead
trace-dtrace.dtrace: trace-dtrace.dtrace-timestamp
trace-dtrace.dtrace-timestamp: $(SRC_PATH)/trace-events
$(BUILD_DIR)/config-host.mak
- $(call quiet-command,sh $(SRC_PATH)/scripts/tracetool
--$(TRACE_BACKEND) -d < $< > $@," GEN trace-dtrace.dtrace")
+ $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/tracetool.py
--backend=$(TRACE_BACKEND) -d < $< > $@," GEN trace-dtrace.dtrace")
@cmp -s $@ trace-dtrace.dtrace || cp $@ trace-dtrace.dtrace
trace-dtrace.o: trace-dtrace.dtrace $(GENERATED_HEADERS)
diff --git a/Makefile.target b/Makefile.target
index 1bd25a8..3e42e5a 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -59,11 +59,11 @@ TARGET_TYPE=system
endif
$(QEMU_PROG).stp:
- $(call quiet-command,sh $(SRC_PATH)/scripts/tracetool \
- --$(TRACE_BACKEND) \
- --binary $(bindir)/$(QEMU_PROG) \
- --target-arch $(TARGET_ARCH) \
- --target-type $(TARGET_TYPE) \
+ $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/tracetool.py \
+ --backend=$(TRACE_BACKEND) \
+ --binary=$(bindir)/$(QEMU_PROG) \
+ --target-arch=$(TARGET_ARCH) \
+ --target-type=$(TARGET_TYPE) \
--stap < $(SRC_PATH)/trace-events > $(QEMU_PROG).stp," GEN
$(QEMU_PROG).stp")
else
stap:
diff --git a/configure b/configure
index d7631ed..bea4a2c 100755
--- a/configure
+++ b/configure
@@ -1097,7 +1097,7 @@ echo " --disable-docs disable documentation
build"
echo " --disable-vhost-net disable vhost-net acceleration support"
echo " --enable-vhost-net enable vhost-net acceleration support"
echo " --enable-trace-backend=B Set trace backend"
-echo " Available backends:"
$("$source_path"/scripts/tracetool --list-backends)
+echo " Available backends:" $($python
"$source_path"/scripts/tracetool.py --list-backends)
echo " --with-trace-file=NAME Full PATH,NAME of file to store traces"
echo " Default:trace-<pid>"
echo " --disable-spice disable spice"
@@ -2654,7 +2654,7 @@ fi
##########################################
# check if trace backend exists
-sh "$source_path/scripts/tracetool" "--$trace_backend" --check-backend >
/dev/null 2> /dev/null
+$python "$source_path/scripts/tracetool.py" "--backend=$trace_backend"
--check-backend > /dev/null 2> /dev/null
if test "$?" -ne 0 ; then
echo
echo "Error: invalid trace backend"
diff --git a/scripts/tracetool b/scripts/tracetool
deleted file mode 100755
index 65bd0a1..0000000
--- a/scripts/tracetool
+++ /dev/null
@@ -1,648 +0,0 @@
-#!/bin/sh
-#
-# Code generator for trace events
-#
-# Copyright IBM, Corp. 2010
-#
-# This work is licensed under the terms of the GNU GPL, version 2. See
-# the COPYING file in the top-level directory.
-
-# Disable pathname expansion, makes processing text with '*' characters simpler
-set -f
-
-usage()
-{
- cat >&2 <<EOF
-usage: $0 [--nop | --simple | --stderr | --ust | --dtrace] [-h | -c]
-Generate tracing code for a file on stdin.
-
-Backends:
- --nop Tracing disabled
- --simple Simple built-in backend
- --stderr Stderr built-in backend
- --ust LTTng User Space Tracing backend
- --dtrace DTrace/SystemTAP backend
-
-Output formats:
- -h Generate .h file
- -c Generate .c file
- -d Generate .d file (DTrace only)
- --stap Generate .stp file (DTrace with SystemTAP only)
-
-Options:
- --binary [path] Full path to QEMU binary
- --target-arch [arch] QEMU emulator target arch
- --target-type [type] QEMU emulator target type ('system' or 'user')
- --probe-prefix [prefix] Prefix for dtrace probe names
- (default: qemu-\$targettype-\$targetarch)
-
-EOF
- exit 1
-}
-
-# Print a line without interpreting backslash escapes
-#
-# The built-in echo command may interpret backslash escapes without an option
-# to disable this behavior.
-puts()
-{
- printf "%s\n" "$1"
-}
-
-# Get the name of a trace event
-get_name()
-{
- local name
- name=${1%%\(*}
- echo "${name##* }"
-}
-
-# Get the given property of a trace event
-# 1: trace-events line
-# 2: property name
-# -> return 0 if property is present, or 1 otherwise
-has_property()
-{
- local props prop
- props=${1%%\(*}
- props=${props% *}
- for prop in $props; do
- if [ "$prop" = "$2" ]; then
- return 0
- fi
- done
- return 1
-}
-
-# Get the argument list of a trace event, including types and names
-get_args()
-{
- local args
- args=${1#*\(}
- args=${args%%\)*}
- echo "$args"
-}
-
-# Get the argument name list of a trace event
-get_argnames()
-{
- local nfields field name sep
- nfields=0
- sep="$2"
- for field in $(get_args "$1"); do
- nfields=$((nfields + 1))
-
- # Drop pointer star
- field=${field#\*}
-
- # Only argument names have commas at the end
- name=${field%,}
- test "$field" = "$name" && continue
-
- printf "%s%s " $name $sep
- done
-
- # Last argument name
- if [ "$nfields" -gt 1 ]
- then
- printf "%s" "$name"
- fi
-}
-
-# Get the number of arguments to a trace event
-get_argc()
-{
- local name argc
- argc=0
- for name in $(get_argnames "$1", ","); do
- argc=$((argc + 1))
- done
- echo $argc
-}
-
-# Get the format string including double quotes for a trace event
-get_fmt()
-{
- puts "${1#*)}"
-}
-
-linetoh_begin_nop()
-{
- return
-}
-
-linetoh_nop()
-{
- local name args
- name=$(get_name "$1")
- args=$(get_args "$1")
-
- # Define an empty function for the trace event
- cat <<EOF
-static inline void trace_$name($args)
-{
-}
-EOF
-}
-
-linetoh_end_nop()
-{
- return
-}
-
-linetoc_begin_nop()
-{
- return
-}
-
-linetoc_nop()
-{
- # No need for function definitions in nop backend
- return
-}
-
-linetoc_end_nop()
-{
- return
-}
-
-linetoh_begin_simple()
-{
- cat <<EOF
-#include "trace/simple.h"
-EOF
-
- simple_event_num=0
-}
-
-cast_args_to_uint64_t()
-{
- local arg
- for arg in $(get_argnames "$1", ","); do
- printf "%s" "(uint64_t)(uintptr_t)$arg"
- done
-}
-
-linetoh_simple()
-{
- local name args argc trace_args
- name=$(get_name "$1")
- args=$(get_args "$1")
- argc=$(get_argc "$1")
-
- trace_args="$simple_event_num"
- if [ "$argc" -gt 0 ]
- then
- trace_args="$trace_args, $(cast_args_to_uint64_t "$1")"
- fi
-
- cat <<EOF
-static inline void trace_$name($args)
-{
- trace$argc($trace_args);
-}
-EOF
-
- simple_event_num=$((simple_event_num + 1))
-}
-
-linetoh_end_simple()
-{
- cat <<EOF
-#define NR_TRACE_EVENTS $simple_event_num
-extern TraceEvent trace_list[NR_TRACE_EVENTS];
-EOF
-}
-
-linetoc_begin_simple()
-{
- cat <<EOF
-#include "trace.h"
-
-TraceEvent trace_list[] = {
-EOF
- simple_event_num=0
-
-}
-
-linetoc_simple()
-{
- local name
- name=$(get_name "$1")
- cat <<EOF
-{.tp_name = "$name", .state=0},
-EOF
- simple_event_num=$((simple_event_num + 1))
-}
-
-linetoc_end_simple()
-{
- cat <<EOF
-};
-EOF
-}
-
-#STDERR
-linetoh_begin_stderr()
-{
- cat <<EOF
-#include <stdio.h>
-#include "trace/stderr.h"
-
-extern TraceEvent trace_list[];
-EOF
-
- stderr_event_num=0
-}
-
-linetoh_stderr()
-{
- local name args argnames argc fmt
- name=$(get_name "$1")
- args=$(get_args "$1")
- argnames=$(get_argnames "$1" ",")
- argc=$(get_argc "$1")
- fmt=$(get_fmt "$1")
-
- if [ "$argc" -gt 0 ]; then
- argnames=", $argnames"
- fi
-
- cat <<EOF
-static inline void trace_$name($args)
-{
- if (trace_list[$stderr_event_num].state != 0) {
- fprintf(stderr, "$name " $fmt "\n" $argnames);
- }
-}
-EOF
- stderr_event_num=$((stderr_event_num + 1))
-
-}
-
-linetoh_end_stderr()
-{
- cat <<EOF
-#define NR_TRACE_EVENTS $stderr_event_num
-EOF
-}
-
-linetoc_begin_stderr()
-{
- cat <<EOF
-#include "trace.h"
-
-TraceEvent trace_list[] = {
-EOF
- stderr_event_num=0
-}
-
-linetoc_stderr()
-{
- local name
- name=$(get_name "$1")
- cat <<EOF
-{.tp_name = "$name", .state=0},
-EOF
- stderr_event_num=$(($stderr_event_num + 1))
-}
-
-linetoc_end_stderr()
-{
- cat <<EOF
-};
-EOF
-}
-#END OF STDERR
-
-# Clean up after UST headers which pollute the namespace
-ust_clean_namespace() {
- cat <<EOF
-#undef mutex_lock
-#undef mutex_unlock
-#undef inline
-#undef wmb
-EOF
-}
-
-linetoh_begin_ust()
-{
- echo "#include <ust/tracepoint.h>"
- ust_clean_namespace
-}
-
-linetoh_ust()
-{
- local name args argnames
- name=$(get_name "$1")
- args=$(get_args "$1")
- argnames=$(get_argnames "$1", ",")
-
- cat <<EOF
-DECLARE_TRACE(ust_$name, TP_PROTO($args), TP_ARGS($argnames));
-#define trace_$name trace_ust_$name
-EOF
-}
-
-linetoh_end_ust()
-{
- return
-}
-
-linetoc_begin_ust()
-{
- cat <<EOF
-#include <ust/marker.h>
-$(ust_clean_namespace)
-#include "trace.h"
-EOF
-}
-
-linetoc_ust()
-{
- local name args argnames fmt
- name=$(get_name "$1")
- args=$(get_args "$1")
- argnames=$(get_argnames "$1", ",")
- [ -z "$argnames" ] || argnames=", $argnames"
- fmt=$(get_fmt "$1")
-
- cat <<EOF
-DEFINE_TRACE(ust_$name);
-
-static void ust_${name}_probe($args)
-{
- trace_mark(ust, $name, $fmt$argnames);
-}
-EOF
-
- # Collect names for later
- names="$names $name"
-}
-
-linetoc_end_ust()
-{
- cat <<EOF
-static void __attribute__((constructor)) trace_init(void)
-{
-EOF
-
- for name in $names; do
- cat <<EOF
- register_trace_ust_$name(ust_${name}_probe);
-EOF
- done
-
- echo "}"
-}
-
-linetoh_begin_dtrace()
-{
- cat <<EOF
-#include "trace-dtrace.h"
-EOF
-}
-
-linetoh_dtrace()
-{
- local name args argnames nameupper
- name=$(get_name "$1")
- args=$(get_args "$1")
- argnames=$(get_argnames "$1", ",")
-
- nameupper=`echo $name | tr '[:lower:]' '[:upper:]'`
-
- # Define an empty function for the trace event
- cat <<EOF
-static inline void trace_$name($args) {
- QEMU_${nameupper}($argnames);
-}
-EOF
-}
-
-linetoh_end_dtrace()
-{
- return
-}
-
-linetoc_begin_dtrace()
-{
- return
-}
-
-linetoc_dtrace()
-{
- # No need for function definitions in dtrace backend
- return
-}
-
-linetoc_end_dtrace()
-{
- return
-}
-
-linetod_begin_dtrace()
-{
- cat <<EOF
-provider qemu {
-EOF
-}
-
-linetod_dtrace()
-{
- local name args
- name=$(get_name "$1")
- args=$(get_args "$1")
-
- # DTrace provider syntax expects foo() for empty
- # params, not foo(void)
- if [ "$args" = "void" ]; then
- args=""
- fi
-
- # Define prototype for probe arguments
- cat <<EOF
- probe $name($args);
-EOF
-}
-
-linetod_end_dtrace()
-{
- cat <<EOF
-};
-EOF
-}
-
-linetostap_begin_dtrace()
-{
- return
-}
-
-linetostap_dtrace()
-{
- local i arg name args arglist
- name=$(get_name "$1")
- args=$(get_args "$1")
- arglist=$(get_argnames "$1", "")
-
- # Define prototype for probe arguments
- cat <<EOF
-probe $probeprefix.$name = process("$binary").mark("$name")
-{
-EOF
-
- i=1
- for arg in $arglist
- do
- # 'limit' is a reserved keyword
- if [ "$arg" = "limit" ]; then
- arg="_limit"
- fi
- cat <<EOF
- $arg = \$arg$i;
-EOF
- i="$((i+1))"
- done
-
- cat <<EOF
-}
-EOF
-}
-
-linetostap_end_dtrace()
-{
- return
-}
-
-# Process stdin by calling begin, line, and end functions for the backend
-convert()
-{
- local begin process_line end str name NAME enabled
- begin="lineto$1_begin_$backend"
- process_line="lineto$1_$backend"
- end="lineto$1_end_$backend"
-
- "$begin"
-
- while read -r str; do
- # Skip comments and empty lines
- test -z "${str%%#*}" && continue
-
- echo
- # Process the line. The nop backend handles disabled lines.
- if has_property "$str" "disable"; then
- "lineto$1_nop" "$str"
- enabled=0
- else
- "$process_line" "$str"
- enabled=1
- fi
- if [ "$1" = "h" ]; then
- name=$(get_name "$str")
- NAME=$(echo $name | tr '[:lower:]' '[:upper:]')
- echo "#define TRACE_${NAME}_ENABLED ${enabled}"
- fi
- done
-
- echo
- "$end"
-}
-
-tracetoh()
-{
- cat <<EOF
-#ifndef TRACE_H
-#define TRACE_H
-
-/* This file is autogenerated by tracetool, do not edit. */
-
-#include "qemu-common.h"
-EOF
- convert h
- echo "#endif /* TRACE_H */"
-}
-
-tracetoc()
-{
- echo "/* This file is autogenerated by tracetool, do not edit. */"
- convert c
-}
-
-tracetod()
-{
- if [ $backend != "dtrace" ]; then
- echo "DTrace probe generator not applicable to $backend backend"
- exit 1
- fi
- echo "/* This file is autogenerated by tracetool, do not edit. */"
- convert d
-}
-
-tracetostap()
-{
- if [ $backend != "dtrace" ]; then
- echo "SystemTAP tapset generator not applicable to $backend backend"
- exit 1
- fi
- if [ -z "$binary" ]; then
- echo "--binary is required for SystemTAP tapset generator"
- exit 1
- fi
- if [ -z "$probeprefix" -a -z "$targettype" ]; then
- echo "--target-type is required for SystemTAP tapset generator"
- exit 1
- fi
- if [ -z "$probeprefix" -a -z "$targetarch" ]; then
- echo "--target-arch is required for SystemTAP tapset generator"
- exit 1
- fi
- if [ -z "$probeprefix" ]; then
- probeprefix="qemu.$targettype.$targetarch";
- fi
- echo "/* This file is autogenerated by tracetool, do not edit. */"
- convert stap
-}
-
-
-backend=
-output=
-binary=
-targettype=
-targetarch=
-probeprefix=
-
-
-until [ -z "$1" ]
-do
- case "$1" in
- "--nop" | "--simple" | "--stderr" | "--ust" | "--dtrace")
backend="${1#--}" ;;
-
- "--binary") shift ; binary="$1" ;;
- "--target-arch") shift ; targetarch="$1" ;;
- "--target-type") shift ; targettype="$1" ;;
- "--probe-prefix") shift ; probeprefix="$1" ;;
-
- "-h" | "-c" | "-d") output="${1#-}" ;;
- "--stap") output="${1#--}" ;;
-
- "--check-backend") exit 0 ;; # used by ./configure to test for backend
-
- "--list-backends") # used by ./configure to list available backends
- echo "nop simple stderr ust dtrace"
- exit 0
- ;;
-
- *)
- usage;;
- esac
- shift
-done
-
-if [ "$backend" = "" -o "$output" = "" ]; then
- usage
-fi
-
-gen="traceto$output"
-"$gen"
-
-exit 0
diff --git a/scripts/tracetool.py b/scripts/tracetool.py
new file mode 100755
index 0000000..91ae351
--- /dev/null
+++ b/scripts/tracetool.py
@@ -0,0 +1,533 @@
+#!/usr/bin/env python
+# Code generator for trace events
+#
+# Copyright IBM, Corp. 2011
+#
+# This work is licensed under the terms of the GNU GPL, version 2. See
+# the COPYING file in the top-level directory.
+#
+#
+
+import sys
+import getopt
+
+def usage():
+ print "Tracetool: Generate tracing code for trace events file on stdin"
+ print "Usage:"
+ print sys.argv[0], "--backend=[nop|simple|stderr|dtrace|ust]
[-h|-c|-d|--stap]"
+ print '''
+Backends:
+ --nop Tracing disabled
+ --simple Simple built-in backend
+ --stderr Stderr built-in backend
+ --dtrace DTrace/SystemTAP backend
+ --ust LTTng User Space Tracing backend
+
+Output formats:
+ -h Generate .h file
+ -c Generate .c file
+ -d Generate .d file (DTrace only)
+ --stap Generate .stp file (DTrace with SystemTAP only)
+
+Options:
+ --binary [path] Full path to QEMU binary
+ --target-arch [arch] QEMU emulator target arch
+ --target-type [type] QEMU emulator target type ('system' or 'user')
+ --probe-prefix [prefix] Prefix for dtrace probe names
+ (default: qemu-targettype-targetarch)
+'''
+ sys.exit(1)
+
+def get_name(line, sep='('):
+ head, sep, tail = line.partition(sep)
+ property, sep, name = head.rpartition(' ')
+ return name
+
+def get_properties(line, sep='('):
+ head, sep, tail = line.partition(sep)
+ property, sep, name = head.rpartition(' ')
+ return property.split()
+
+def get_args(line, sep1='(', sep2=')'):
+ head, sep1, tail = line.partition(sep1)
+ args, sep2, fmt_str = tail.partition(sep2)
+ return args
+
+def get_argnames(line, sep=','):
+ nfields = 0
+ str = []
+ args = get_args(line)
+ for field in args.split():
+ nfields = nfields + 1
+ # Drop pointer star
+ type, ptr, tail = field.partition('*')
+ if type != field:
+ field = tail
+
+ name, sep, tail = field.partition(',')
+
+ if name == field:
+ continue
+ str.append(name)
+ str.append(", ")
+
+ if nfields > 1:
+ str.append(name)
+ return ''.join(str)
+ else:
+ return ''
+
+def get_argc(line):
+ argc = 0
+ argnames = get_argnames(line)
+ if argnames:
+ for name in argnames.split(','):
+ argc = argc + 1
+ return argc
+
+def get_fmt(line, sep=')'):
+ event, sep, fmt = line.partition(sep)
+ return fmt.rstrip('\n')
+
+def calc_sizeofargs(line):
+ args = get_args(line)
+ argc = get_argc(line)
+ str = []
+ newstr = ""
+ if argc > 0:
+ str = args.split(',')
+ for elem in str:
+ if is_string(elem): #string
+ type, sep, var = elem.rpartition('*')
+ newstr = newstr+"4 + strlen("+var.lstrip()+") + "
+ else:
+ newstr = newstr + '8 + '
+ newstr = newstr + '0' # takes care of last +
+ return newstr
+
+
+def trace_h_begin():
+ print '''#ifndef TRACE_H
+#define TRACE_H
+
+/* This file is autogenerated by tracetool, do not edit. */
+
+#include "qemu-common.h"'''
+
+
+def trace_h_end():
+ print '#endif /* TRACE_H */'
+
+
+def trace_c_begin():
+ print '/* This file is autogenerated by tracetool, do not edit. */'
+
+def trace_c_end():
+ pass # nop, required for trace_gen
+
+def nop_h(events):
+ print
+ for event in events:
+ print '''static inline void trace_%(name)s(%(args)s)
+{
+}
+''' % {
+ 'name': event.name,
+ 'args': event.args
+}
+ return
+
+def nop_c(events):
+ pass # nop, reqd for converters
+
+def simple_h(events):
+ print '#include "trace/simple.h"'
+ print
+
+ for event in events:
+ if event.argc:
+ argstr = event.argnames.split()
+ arg_prefix = '(uint64_t)(uintptr_t)'
+ cast_args = arg_prefix + arg_prefix.join(argstr)
+ simple_args = (str(event.num) + ', ' + cast_args)
+ else:
+ simple_args = str(event.num)
+
+ print '''static inline void trace_%(name)s(%(args)s)
+{
+ trace%(argc)d(%(trace_args)s);
+}''' % {
+ 'name': event.name,
+ 'args': event.args,
+ 'argc': event.argc,
+ 'trace_args': simple_args
+}
+ print
+ print '#define NR_TRACE_EVENTS %d' % (event.num + 1)
+ print 'extern TraceEvent trace_list[NR_TRACE_EVENTS];'
+
+
+def is_string(arg):
+ strtype = ('const char*', 'char*', 'const char *', 'char *')
+ if arg.lstrip().startswith(strtype):
+ return True
+ else:
+ return False
+
+def simple_c(events):
+ print '#include "trace.h"'
+ print
+ print 'TraceEvent trace_list[] = {'
+ print
+
+ for event in events:
+ print '{.tp_name = "%(name)s", .state=0},' % {
+ 'name': event.name,
+}
+ print
+ print '};'
+
+def stderr_h(events):
+ print '''#include <stdio.h>
+#include "trace/stderr.h"
+
+extern TraceEvent trace_list[];'''
+ for event in events:
+ argnames = event.argnames
+ if event.argc > 0:
+ argnames = ', ' + event.argnames
+ else:
+ argnames = ''
+ print '''
+static inline void trace_%(name)s(%(args)s)
+{
+ if (trace_list[%(event_num)s].state != 0) {
+ fprintf(stderr, "%(name)s " %(fmt)s "\\n" %(argnames)s);
+ }
+}''' % {
+ 'name': event.name,
+ 'args': event.args,
+ 'event_num': event.num,
+ 'fmt': event.fmt,
+ 'argnames': argnames
+}
+ print
+ print '#define NR_TRACE_EVENTS %d' % (event.num + 1)
+
+def stderr_c(events):
+ print '''#include "trace.h"
+
+TraceEvent trace_list[] = {
+'''
+ for event in events:
+ print '{.tp_name = "%(name)s", .state=0},' % {
+ 'name': event.name
+}
+ print
+ print '};'
+
+def ust_h(events):
+ print '''#include <ust/tracepoint.h>
+#undef mutex_lock
+#undef mutex_unlock
+#undef inline
+#undef wmb'''
+
+ for event in events:
+ if event.argc > 0:
+ print '''
+DECLARE_TRACE(ust_%(name)s, TP_PROTO(%(args)s), TP_ARGS(%(argnames)s));
+#define trace_%(name)s trace_ust_%(name)s''' % {
+ 'name': event.name,
+ 'args': event.args,
+ 'argnames': event.argnames
+}
+ else:
+ print '''
+_DECLARE_TRACEPOINT_NOARGS(ust_%(name)s);
+#define trace_%(name)s trace_ust_%(name)s''' % {
+ 'name': event.name,
+}
+ print
+
+def ust_c(events):
+ print '''#include <ust/marker.h>
+#undef mutex_lock
+#undef mutex_unlock
+#undef inline
+#undef wmb
+#include "trace.h"'''
+ eventlist = list(events)
+ for event in eventlist:
+ argnames = event.argnames
+ if event.argc > 0:
+ argnames = ', ' + event.argnames
+ print '''
+DEFINE_TRACE(ust_%(name)s);
+
+static void ust_%(name)s_probe(%(args)s)
+{
+ trace_mark(ust, %(name)s, %(fmt)s%(argnames)s);
+}''' % {
+ 'name': event.name,
+ 'args': event.args,
+ 'fmt': event.fmt,
+ 'argnames': argnames
+}
+ else:
+ print '''
+DEFINE_TRACE(ust_%(name)s);
+
+static void ust_%(name)s_probe(%(args)s)
+{
+ trace_mark(ust, %(name)s, UST_MARKER_NOARGS);
+}''' % {
+ 'name': event.name,
+ 'args': event.args,
+}
+
+ # register probes
+ print '''
+static void __attribute__((constructor)) trace_init(void)
+{'''
+ for event in eventlist:
+ print ' register_trace_ust_%(name)s(ust_%(name)s_probe);' % {
+ 'name': event.name
+}
+ print '}'
+
+def dtrace_h(events):
+ print '#include "trace-dtrace.h"'
+ print
+ for event in events:
+ print '''static inline void trace_%(name)s(%(args)s) {
+ QEMU_%(uppername)s(%(argnames)s);
+}
+''' % {
+ 'name': event.name,
+ 'args': event.args,
+ 'uppername': event.name.upper(),
+ 'argnames': event.argnames,
+}
+
+def dtrace_c(events):
+ pass # No need for function definitions in dtrace backend
+
+def dtrace_d(events):
+ print 'provider qemu {'
+ for event in events:
+ args = event.args
+
+ # DTrace provider syntax expects foo() for empty
+ # params, not foo(void)
+ if args == 'void':
+ args = ''
+
+ # Define prototype for probe arguments
+ print '''
+ probe %(name)s(%(args)s);''' % {
+ 'name': event.name,
+ 'args': args
+}
+ print
+ print '};'
+
+def dtrace_stp(events):
+ for event in events:
+ # Define prototype for probe arguments
+ print '''
+probe %(probeprefix)s.%(name)s = process("%(binary)s").mark("%(name)s")
+{''' % {
+ 'probeprefix': probeprefix,
+ 'name': event.name,
+ 'binary': binary
+}
+ i = 1
+ if event.argc > 0:
+ for arg in event.argnames.split(','):
+ # 'limit' is a reserved keyword
+ if arg == 'limit':
+ arg = '_limit'
+ print ' %s = $arg%d;' % (arg.lstrip(), i)
+ i += 1
+ print '}'
+ print
+
+def trace_stap_begin():
+ print '/* This file is autogenerated by tracetool, do not edit. */'
+
+def trace_stap_end():
+ pass #nop, reqd for trace_gen
+
+def trace_d_begin():
+ print '/* This file is autogenerated by tracetool, do not edit. */'
+
+def trace_d_end():
+ pass #nop, reqd for trace_gen
+
+
+# Registry of backends and their converter functions
+converters = {
+ 'simple': {
+ 'h': simple_h,
+ 'c': simple_c,
+ },
+
+ 'nop': {
+ 'h': nop_h,
+ 'c': nop_c,
+ },
+
+ 'stderr': {
+ 'h': stderr_h,
+ 'c': stderr_c,
+ },
+
+ 'dtrace': {
+ 'h': dtrace_h,
+ 'c': dtrace_c,
+ 'd': dtrace_d,
+ 'stap': dtrace_stp
+ },
+
+ 'ust': {
+ 'h': ust_h,
+ 'c': ust_c,
+ },
+
+}
+
+# Trace file header and footer code generators
+trace_gen = {
+ 'h': {
+ 'begin': trace_h_begin,
+ 'end': trace_h_end,
+ },
+ 'c': {
+ 'begin': trace_c_begin,
+ 'end': trace_c_end,
+ },
+ 'd': {
+ 'begin': trace_d_begin,
+ 'end': trace_d_end,
+ },
+ 'stap': {
+ 'begin': trace_stap_begin,
+ 'end': trace_stap_end,
+ },
+}
+
+# A trace event
+class Event(object):
+ def __init__(self, num, line):
+ self.num = num
+ self.args = get_args(line)
+ self.arglist = self.args.split(',')
+ self.name = get_name(line)
+ self.argc = get_argc(line)
+ self.argnames = get_argnames(line)
+ self.sizestr = calc_sizeofargs(line)
+ self.fmt = get_fmt(line)
+ self.properties = get_properties(line)
+
+# Generator that yields Event objects given a trace-events file object
+def read_events(fobj):
+ event_num = 0
+ for line in fobj:
+ if not line.strip():
+ continue
+ if line.lstrip().startswith('#'):
+ continue
+ yield Event(event_num, line)
+ event_num += 1
+
+binary = ""
+probeprefix = ""
+
+def main():
+ global binary, probeprefix
+ targettype = ""
+ targetarch = ""
+ backend = ""
+ supported_backends = ["simple", "nop", "stderr", "dtrace", "ust"]
+ short_options = "hcd"
+ long_options = ["stap", "backend=", "binary=", "target-arch=",
"target-type=", "probe-prefix=", "list-backends", "check-backend"]
+ try:
+ opts, args = getopt.getopt(sys.argv[1:], short_options, long_options)
+ except getopt.GetoptError, err:
+ # print help information and exit:
+ print str(err) # will print something like "option -a not recognized"
+ usage()
+ sys.exit(2)
+ for opt, arg in opts:
+ if opt == '-h':
+ output = 'h'
+ elif opt == '-c':
+ output = 'c'
+ elif opt == '-d':
+ output = 'd'
+ elif opt == '--stap':
+ output = 'stap'
+ elif opt == '--backend':
+ backend = arg
+ elif opt == '--binary':
+ binary = arg
+ elif opt == '--target-arch':
+ targetarch = arg
+ elif opt == '--target-type':
+ targettype = arg
+ elif opt == '--probe-prefix':
+ probeprefix = arg
+ elif opt == '--list-backends':
+ print 'simple, nop, stderr, dtrace, ust'
+ sys.exit(0)
+ elif opt == "--check-backend":
+ if backend in supported_backends:
+ sys.exit(0)
+ else:
+ sys.exit(1)
+ else:
+ #assert False, "unhandled option"
+ print "unhandled option: ", opt
+ usage()
+
+ if backend == "" or output == "":
+ usage()
+ sys.exit(0)
+
+ if backend != 'dtrace' and output == 'd':
+ print 'DTrace probe generator not applicable to %s backend' % backend
+ sys.exit(1)
+
+ if output == 'stap':
+ if backend != "dtrace":
+ print 'SystemTAP tapset generator not applicable to %s backend' %
backend
+ sys.exit(1)
+ if binary == "":
+ print '--binary is required for SystemTAP tapset generator'
+ sys.exit(1)
+ if not probeprefix and not targettype:
+ print '--target-type is required for SystemTAP tapset generator'
+ sys.exit(1)
+ if not probeprefix and not targetarch:
+ print '--target-arch is required for SystemTAP tapset generator'
+ sys.exit(1)
+ if probeprefix == "":
+ probeprefix = 'qemu.' + targettype + '.' + targetarch
+
+ disabled_events, enabled_events = [], []
+ for e in read_events(sys.stdin):
+ if 'disable' in e.properties:
+ disabled_events.append(e)
+ else:
+ enabled_events.append(e)
+
+ trace_gen[output]['begin']()
+ if output == 'h': # disabled events
+ converters['nop'][output](disabled_events)
+ converters[backend][output](enabled_events)
+ trace_gen[output]['end']()
+
+if __name__ == "__main__":
+ main()
+
