Fixed the "mmap" to work on MacOSX/darwin by supplying the correct arguemnts.

Modified ClangUserExpression and ClangUtilityFunction to display the actual
error (if one is available) that made the JIT fail instead of a canned 
response.

Fixed the restoring of all register values when the 'G' packet doesn't work
to use the correct data.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@131454 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Expression/ClangUtilityFunction.cpp b/source/Expression/ClangUtilityFunction.cpp
index 7882371..a48cf00 100644
--- a/source/Expression/ClangUtilityFunction.cpp
+++ b/source/Expression/ClangUtilityFunction.cpp
@@ -135,7 +135,11 @@
     }
     else
     {
-        error_stream.Printf ("error: expression can't be interpreted or run\n", num_errors);
+        const char *error_cstr = jit_error.AsCString();
+        if (error_cstr && error_cstr[0])
+            error_stream.Printf ("error: %s\n", error_cstr);
+        else
+            error_stream.Printf ("error: expression can't be interpreted or run\n", num_errors);
         return false;
     }
 }