On Tue, Jul 24, 2007 at 11:29:14PM -0700, David Miller wrote:
> From: Jeremy Fitzhardinge <[email protected]>
> Date: Tue, 24 Jul 2007 23:24:55 -0700
>
> > H. Peter Anvin wrote:
> > > How far back was __builtin_trap() supported?
> >
> > I think its relatively recent, but it might be within our supported
> > compiler window.
>
> I'm pretty sure it is.
We had this in include/asm-s390/bug.h to avoid compile errors with gcc 3.2:
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
+ __builtin_trap();
+#else
+ asm volatile(".long 0");
+#endif
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