[PATCH] Bug 6731: improve -l (listing mode) to list probe/alias variables

[Wenji Huang <wenji dot huang at oracle dot com>]

This patch will print the variables name and type when stap is in 
listing mode. Since there is no pass-2 intermediate state to be provided 
by bug #3498, it is a simple and practicable method in current status.

The output is like:
[wjhuang@systemtap]$ stap -l syscall.b*
syscall.bdflush
  name:string, func:long, data:long, data_str:string, argstr:string
syscall.bind
  name:string, sockfd:long, my_addr_uaddr:long, addrlen:long, argstr:string
syscall.brk
  name:string, brk:long, argstr:string

diff --git a/main.cxx b/main.cxx
index 8c99cf7..5cfef7c 100644
--- a/main.cxx
+++ b/main.cxx
@@ -179,6 +179,16 @@ printscript(systemtap_session& s, ostream& o)
           if (seen.find (pp) == seen.end())
             {
               o << pp << endl;
+              if (p->locals.size()>0)
+               o << "  ";
+              for (unsigned j=0; j<p->locals.size(); j++)
+                   {
+                     vardecl* v = p->locals[j];
+                     if (j>0)
+                       o << ", ";
+                     v->printsig (o);
+                   }
+              o << endl;
               seen.insert (pp);
             }
         }
@@ -581,6 +591,7 @@ main (int argc, char * const argv [])
         case 'l':
          s.suppress_warnings = true;
           s.listing_mode = true;
+          s.unoptimized = true;
           s.last_pass = 2;
           if (have_script)
             {

Regards,
Wenji