[multiple changes]

2003-03-10  2003-02-27  Mohan Embar  <gnustuff@thisiscool.com>

        * include/jvm.h: removed declaration of _Jv_ThisExecutable()
        setter; made return value of getter const char* instead of char*
        * prims.cc: removed all references to _Jv_ThisExecutable().
        These are in the platform-specific sections now.
        * posix.cc: define platform-specific _Jv_ThisExecutable().
        Handle DISABLE_MAIN_ARGS and HAVE_PROC_SELF_EXE cases
        * win32.cc: define platform-specific _Jv_ThisExecutable()
        using GetModuleFilename()
        * java/lang/natRuntime.cc: set gnu.gcj.progname property
        to argv[0] instead of _Jv_ThisExecutable()

2003-03-10  Ranjit Mathew  <rmathew@hotmail.com>

        * gnu/gcj/runtime/NameFinder.java (usingAddr2name): New flag
        that is set if we are using addr2name.awk instead of addr2line.
        (NameFinder): Set usingAddr2name if using addr2name.awk.
        (getExternalLabel): New native method to convert a method
        name to an external label.
        (lookup): Convert name given by addr2line to an external label
        before demangling.

        * gnu/gcj/runtime/natNameFinder.cc (LABEL_PREFIX): New string
        constant representing the prefix attached to method names to
        convert them to an external label.
        (gnu::gcj::runtime::NameFinder::getExternalLabel): Define
        using LABEL_PREFIX.

From-SVN: r64111

libjava/gnu/gcj/runtime/NameFinder.java

@@ -102,6 +102,11 @@ public class NameFinder
   private BufferedWriter addr2lineOut;
   private BufferedReader addr2lineIn;
 
+  /**
+   * Flag set if using addr2name.awk instead of addr2line from binutils.
+   */
+  private boolean usingAddr2name = false;
+
   /**
    * Creates a new NameFinder. Call close to get rid of any resources
    * created while using the <code>lookup</code> methods.
@@ -142,6 +147,7 @@ public class NameFinder
 	      {
 		String[] exec = new String[] {"addr2name.awk", executable};
 		addr2line = runtime.exec(exec);
+		usingAddr2name = true;
 	      }
 	    catch (IOException ioe2) { addr2line = null; }
 	  }
@@ -180,6 +186,11 @@ public class NameFinder
    */
   native private String getAddrAsString(RawData addrs, int n);
 
+  /**
+   * Returns the label that is exported for the given method name.
+   */
+  native private String getExternalLabel(String name);
+
   /**
    * If nth element of stack is an interpreted frame, return the
    * element representing the method being interpreted.
@@ -212,6 +223,15 @@ public class NameFinder
 		addr2lineOut.flush();
 		name = addr2lineIn.readLine();
 		file = addr2lineIn.readLine();
+
+                // addr2line uses symbolic debugging information instead
+                // of the actually exported labels as addr2name.awk does.
+                // This name might need some modification, depending on 
+                // the system, to make it a label like that returned 
+                // by addr2name.awk or dladdr.
+                if (! usingAddr2name)
+                  if (name != null && ! "??".equals (name))
+                    name = getExternalLabel (name);
 	      }
 	    catch (IOException ioe) { addr2line = null; }
 	  }