4 files changed, 151 insertions, 0 deletions
diff --git a/testsuite/lib/stap_run.exp b/testsuite/lib/stap_run.exp
index a4beaa12..3043eeed 100644
--- a/testsuite/lib/stap_run.exp
+++ b/testsuite/lib/stap_run.exp
@@ -30,6 +30,7 @@ proc stap_run { TEST_NAME {LOAD_GEN_FUNCTION ""} {OUTPUT_CHECK_STRING ""} args }
     if [file readable $test_file_name] {
         lappend cmd $test_file_name
     }
+    send_log "executing: $cmd\n"
     eval spawn $cmd
     expect {
 	-timeout 180
diff --git a/testsuite/systemtap.context/usymbols.c b/testsuite/systemtap.context/usymbols.c
new file mode 100644
index 00000000..7c590724
--- /dev/null
+++ b/testsuite/systemtap.context/usymbols.c
@@ -0,0 +1,39 @@
+/* usymbol test case
+ * Copyright (C) 2008, Red Hat Inc.
+ *                                                          
+ * This file is part of systemtap, and is free software.  You can
+ * redistribute it and/or modify it under the terms of the GNU General
+ * Public License (GPL); either version 2, or (at your option) any
+ * later version.
+ *
+ * Uses signal to tranfer user space addresses into the kernel where a
+ * probe on sigaction will extract them and produce the symbols.  To
+ * poke into the executable we get the sa_handler from the main executable,
+ * and then the library through calling signal.
+ *
+ * FIXME. We call into the library to get the right symbol. If we
+ * register the handler from the main executable. We need to handle
+ * @plt symbols (setting a handler in the main executable that is in a
+ * shared library will have the @plt address, not the address inside
+ * the shared library).
+ */
+
+#include <signal.h>
+typedef void (*sighandler_t)(int);
+
+// function from our library
+int lib_main (void);
+
+void
+main_handler (int signum)
+{
+  /* dummy handler, just used for the address... */
+}
+
+int
+main (int argc, char *argv[], char *envp[])
+{
+  // Use SIGFPE since we never expect that to be triggered.
+  signal(SIGFPE, main_handler);
+  lib_main();
+}
diff --git a/testsuite/systemtap.context/usymbols.exp b/testsuite/systemtap.context/usymbols.exp
new file mode 100644
index 00000000..f95fd896
--- /dev/null
+++ b/testsuite/systemtap.context/usymbols.exp
@@ -0,0 +1,82 @@
+set test "./usymbols"
+set testpath "$srcdir/$subdir"
+set testsrc  "$testpath/usymbols.c"
+set testsrclib  "$testpath/usymbols_lib.c"
+set testexe  "[pwd]/usymbols"
+set testlibname  "usymbols"
+set testlibdir "[pwd]"
+set testso  "$testlibdir/lib${testlibname}.so"
+set testflags "additional_flags=-g additional_flags=-O"
+set testlibflags "testflags additional_flags=-fPIC additional_flags=-shared"
+set maintestflags "$testflags additional_flags=-L$testlibdir additional_flags=-l$testlibname additional_flags=-Wl,-rpath,$testlibdir"
+
+# Only run on make installcheck
+if {! [installtest_p]} { untested "$test -p5"; return }
+
+# Compile our test program and library.
+set res [target_compile $testsrclib $testso executable $testlibflags]
+if { $res != "" } {
+    verbose "target_compile for $testso failed: $res" 2
+    fail "unable to compile $testsrclib"
+    return
+}
+set res [target_compile $testsrc $testexe executable $maintestflags]
+if { $res != "" } {
+    verbose "target_compile failed: $res" 2
+    fail "unable to compile $testsrc"
+    return
+}
+
+# We need the execname() trick to work around (the workaround of) PR6964
+# otherwise we get also the rt_sigactions of stapio. Get the handler
+# (comes from the executable or the library).
+set testscript {
+    probe syscall.rt_sigaction {
+      if (pid() == target() && execname() == "%s") {
+	  handler = $act->sa_handler;
+	  printf("handler: %%s\n", symbolname(handler));
+      }
+    }
+    /* track through uprobes, so as to make sure we have the symbols */
+    probe process("%s").function("*") { printf(""); }
+}
+
+set output {handler: main_handler
+handler: lib_handler}
+
+# Got to run stap with both the exe and the libraries used as -d args.
+# XXX Note how we need the fully resolved (absolute) path...
+set script [format $testscript usymbols $testexe]
+catch {eval exec [concat ldd $testexe | grep $testlibname]} libpath
+set libpath [lindex [split $libpath " "] 2]
+send_log "libpath: $libpath\n"
+if {[string equal "link" [file type $libpath]]} {
+    set libpath [file join [file dirname $libpath] [file readlink $libpath]]
+}
+send_log "libpath: $libpath\n"
+
+# XXX Cheat, explicitly add STP_NEED_VMA_TRACKER
+set cmd [concat stap -DSTP_NEED_VMA_TRACKER -d $libpath -d $testexe -c $testexe -e {$script}]
+send_log "cmd: $cmd\n"
+catch {eval exec $cmd} res
+send_log "cmd output: $res\n"
+
+set n 0
+set m [llength [split $output "\n"]]
+set expected [split $output "\n"]
+foreach line [split $res "\n"] {
+    if {![string equal $line [lindex $expected $n]]} {
+      fail usymbols
+      send_log "line [expr $n + 1]: expected \"[lindex $expected $n]\", "
+      send_log "Got \"$line\"\n"
+      return
+    }
+    incr n
+}
+if { $n != $m } {
+  fail usymbols
+  send_log "Got \"$n\" lines, expected \"$m\" lines\n"
+} else {
+  pass usymbols
+}
+exec rm -f $testexe $testso
diff --git a/testsuite/systemtap.context/usymbols_lib.c b/testsuite/systemtap.context/usymbols_lib.c
new file mode 100644
index 00000000..faccb39b
--- /dev/null
+++ b/testsuite/systemtap.context/usymbols_lib.c
@@ -0,0 +1,29 @@
+/* usymbol test case - library helper
+ * Copyright (C) 2008, Red Hat Inc.
+ *                                                          
+ * This file is part of systemtap, and is free software.  You can
+ * redistribute it and/or modify it under the terms of the GNU General
+ * Public License (GPL); either version 2, or (at your option) any
+ * later version.
+ *
+ * Uses signal to tranfer user space addresses into the kernel where a
+ * probe on sigaction will extract them and produce the symbols.  To
+ * poke into the executable we get the sa_handler set through signal
+ * from this library.
+ */
+
+#include <signal.h>
+typedef void (*sighandler_t)(int);
+
+void
+lib_handler (int signum)
+{
+  /* dummy handler, just used for the address... */
+}
+
+void
+lib_main ()
+{
+  // Use SIGFPE since we never expect that to be triggered.
+  signal(SIGFPE, lib_handler);
+}