2006-12-08 Josh Stone <joshua.i.stone@intel.com>

	PR 3681.
	* staptree.h (struct vardecl): Add a literal 'init' member for the
	initialization value of globals.
	* staptree.cxx (vardecl::vardecl): Initialize 'init' to NULL.
	(vardecl::print): Print global init value during pass-1 output.
	* main.cxx (printscript): Print global init values during verbose
	pass-2 output.
	* parse.cxx (parser::parse_global): Set the initialization literal of
	global vardecls.
	* translate.cxx (var::init): Don't unconditionally override the value
	of numeric globals when the module_param isn't used.
	(c_unparser::emit_global_param): Write numeric module_params directly
	into the global variable, as an int64_t instead of long.
	(c_unparser::emit_global): Add initialization to global declarations.
	Don't create a temp module_param long for numeric globals anymore.

runtime/
	* runtime.h (param_set_int64_t, param_get_int64_t,
	param_check_int64_t): New functions to allow taking module parameters
	directly as int64_t values.

testsuite/
	* systemtap.base/global_init.exp, systemtap.base/global_init.stp: New
	test for checking the timeliness of global initialization.

1 files changed, 31 insertions, 0 deletions

diff --git a/testsuite/systemtap.base/global_init.stp b/testsuite/systemtap.base/global_init.stp
new file mode 100644
index 00000000..a5d7e58e
--- /dev/null
+++ b/testsuite/systemtap.base/global_init.stp
@@ -0,0 +1,31 @@
+/*
+ * global_init.stp
+ *
+ * Check that global variables are initialized before all begin probes
+ */
+
+probe begin {  log("systemtap starting probe")  }
+probe end   {  log("systemtap ending probe")    }
+
+global gnum = 42
+global gstr = "foobar"
+
+global gnum_saved
+global gstr_saved
+probe begin(-9223372036854775808) {
+    gnum_saved = gnum
+    gstr_saved = gstr
+}
+
+probe end {
+  if (gnum_saved == 42)
+    log("systemtap test success")
+  else
+    printf("systemtap test failure - gnum_saved:%d != 42\n", gnum_saved)
+
+  if (gstr_saved == "foobar")
+    log("systemtap test success")
+  else
+    printf("systemtap test failure - gstr_saved:%s != foobar\n", gstr_saved)
+}
+