Patch: add systemtap-style marker to _Unwind_DebugHook

[Josh Stone]

On 01/14/2011 11:37 AM, Rainer Orth wrote:
> Tom Tromey <tromey@redhat.com> writes:
> 
>> @@ -1493,7 +1497,11 @@ static void
>>  _Unwind_DebugHook (void *cfa __attribute__ ((__unused__)),
>>  		   void *handler __attribute__ ((__unused__)))
>>  {
>> +#ifdef HAVE_SYS_SDT_H
>> +  STAP_PROBE2 (libgcc, unwind, cfa, handler);
>> +#else
>>    asm ("");
>> +#endif
>>  }
>>  
>>  /* Install TARGET into CURRENT so that we can return to it.  This is a
> 
> This is wrong: Solaris 10+ has <sys/sdt.h> for DTrace, but only defines
> DTRACE_* there.

SystemTap's header also defines DTRACE_PROBE2 for compatibility, so you
could use that instead.  The parsing for GDB to use it on Solaris will
be very different though.

Josh