[Bug translator/14524] New: pragma for pre-1.8 embedded-c mangling scheme

[Bug translator/14524] New: pragma for pre-1.8 embedded-c mangling scheme

[fche at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14524

             Bug #: 14524
           Summary: pragma for pre-1.8 embedded-c mangling scheme
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap@sourceware.org
        ReportedBy: fche@redhat.com
    Classification: Unclassified


As a migration aid for embedded-c functions that need to work both with pre-1.8
systemtap and >=, it would be desirable to support a pragma comment that allows
the THIS->foo THIS->__retvalue widgets to resolve, only for that embedded-c
function.

https://bugzilla.redhat.com/show_bug.cgi?id=851940

e.g. let these two functions coexist:

function foo:long (bar:long) %{ /* unmangled */
   THIS->__retvalue = THIS->bar;
%}
function zoo:long (bar:long) %{
   STAP_RETVALUE = STAP_ARG_bar;
%}

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[Bug translator/14524] pragma for pre-1.8 embedded-c mangling scheme

[smakarov at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14524

Serguei Makarov <smakarov at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |smakarov at redhat dot com
         Resolution|                            |FIXED

--- Comment #1 from Serguei Makarov <smakarov at redhat dot com> 2012-08-28 14:17:30 UTC ---
Added and documented the desired /* unmangled */ pragma. As an (incidental)
bonus, having /* unmangled */ doesn't disable the new access macros, so we can
use both syntaxes in one function:

function foo:long (bar:long) %{ /* unmangled */
   THIS->retvalue = THIS->bar + STAP_ARG_bar;
%}

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