diff options
| -rw-r--r-- | Makefile.target | 29 | ||||
| -rwxr-xr-x | configure | 7 | ||||
| -rwxr-xr-x | tracetool | 128 |
3 files changed, 146 insertions, 18 deletions
diff --git a/Makefile.target b/Makefile.target index 31c968c..2800f47 100644 --- a/Makefile.target +++ b/Makefile.target @@ -41,7 +41,27 @@ kvm.o kvm-all.o vhost.o vhost_net.o: QEMU_CFLAGS+=$(KVM_CFLAGS) config-target.h: config-target.h-timestamp config-target.h-timestamp: config-target.mak -all: $(PROGS) +ifdef CONFIG_SYSTEMTAP_TRACE +stap: $(QEMU_PROG).stp + +ifdef CONFIG_USER_ONLY +TARGET_TYPE=user +else +TARGET_TYPE=system +endif + +$(QEMU_PROG).stp: + $(call quiet-command,sh $(SRC_PATH)/tracetool \ + --$(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: +endif + +all: $(PROGS) stap # Dummy command so that make thinks it has done something @true @@ -341,6 +361,9 @@ clean: rm -f *.o *.a *~ $(PROGS) nwfpe/*.o fpu/*.o rm -f *.d */*.d tcg/*.o ide/*.o rm -f hmp-commands.h qmp-commands.h gdbstub-xml.c +ifdef CONFIG_SYSTEMTAP_TRACE + rm -f *.stp +endif install: all ifneq ($(PROGS),) @@ -349,6 +372,10 @@ ifneq ($(STRIP),) $(STRIP) $(patsubst %,"$(DESTDIR)$(bindir)/%",$(PROGS)) endif endif +ifdef CONFIG_SYSTEMTAP_TRACE + $(INSTALL_DIR) "$(DESTDIR)$(datadir)/../systemtap/tapset" + $(INSTALL_DATA) $(QEMU_PROG).stp "$(DESTDIR)$(datadir)/../systemtap/tapset" +endif # Include automatically generated dependency files -include $(wildcard *.d */*.d) @@ -2203,6 +2203,10 @@ if test "$trace_backend" = "dtrace"; then echo exit 1 fi + trace_backend_stap="no" + if has 'stap' ; then + trace_backend_stap="yes" + fi fi ########################################## @@ -2645,6 +2649,9 @@ fi if test "$trace_backend" = "simple"; then trace_file="\"$trace_file-%u\"" fi +if test "$trace_backend" = "dtrace" -a "$trace_backend_stap" = "yes" ; then + echo "CONFIG_SYSTEMTAP_TRACE=y" >> $config_host_mak +fi echo "CONFIG_TRACE_FILE=$trace_file" >> $config_host_mak echo "TOOLS=$tools" >> $config_host_mak @@ -23,9 +23,16 @@ Backends: --dtrace DTrace/SystemTAP backend Output formats: - -h Generate .h file - -c Generate .c file - -d Generate .d file (DTrace only) + -h Generate .h file + -c Generate .c file + -d Generate .d file (DTrace only) + --stap Generate .stp file (DTrace with SystemTAP only) + +Options: + --binary [path] Full path to QEMU binary + --target-arch [arch] QEMU emulator target arch + --target-type [type] QEMU emulator target type ('system' or 'user') + EOF exit 1 } @@ -396,6 +403,51 @@ linetod_end_dtrace() EOF } +linetostap_begin_dtrace() +{ + return +} + +linetostap_dtrace() +{ + local i arg name args arglist state + name=$(get_name "$1") + args=$(get_args "$1") + arglist=$(get_argnames "$1", "") + state=$(get_state "$1") + if [ "$state" = "0" ] ; then + name=${name##disable } + fi + + # Define prototype for probe arguments + cat <<EOF +probe qemu.$targettype.$targetarch.$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() { @@ -461,19 +513,61 @@ tracetod() convert d } -# Choose backend -case "$1" in -"--nop" | "--simple" | "--ust" | "--dtrace") backend="${1#--}" ;; -*) usage ;; -esac -shift - -case "$1" in -"-h") tracetoh ;; -"-c") tracetoc ;; -"-d") tracetod ;; -"--check-backend") exit 0 ;; # used by ./configure to test for backend -*) usage ;; -esac +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 "$targettype" ]; then + echo "--target-type is required for SystemTAP tapset generator" + exit 1 + fi + if [ -z "$targetarch" ]; then + echo "--target-arch is required for SystemTAP tapset generator" + exit 1 + fi + echo "/* This file is autogenerated by tracetool, do not edit. */" + convert stap +} + + +backend= +output= +binary= +targettype= +targetarch= + + +until [ -z "$1" ] +do + case "$1" in + "--nop" | "--simple" | "--ust" | "--dtrace") backend="${1#--}" ;; + + "--binary") shift ; binary="$1" ;; + "--target-arch") shift ; targetarch="$1" ;; + "--target-type") shift ; targettype="$1" ;; + + "-h" | "-c" | "-d") output="${1#-}" ;; + "--stap") output="${1#--}" ;; + + "--check-backend") exit 0 ;; # used by ./configure to test for backend + + *) + usage;; + esac + shift +done + +if [ "$backend" = "" -o "$output" = "" ]; then + usage +fi + +gen="traceto$output" +"$gen" exit 0 |
