00_rwsem-11, 2.4.4-ac11 and gcc-3(2001-05-14)

00_rwsem-11, 2.4.4-ac11 and gcc-3(2001-05-14)

[mirabilos]

Andrea,
I applied rwsem-11 (a bit by hand) to -ac11 and tried to
compile. By changing CFLAGS_sys.o to -O (instead of -O2)
as I read earlier I nearly could compile, it only barfed
when it came to assemble the xaddl procedure by itself:

static inline long rwsem_xchgadd(long value, long * count)
{
        __asm__ __volatile__(LOCK "xaddl %0,%1"
                             : "+r" (value), "+m" (*count));
        return value;
}

changing from "inline" to "" yields a kernel which stops just
before mounting root (sysrq still works, but nothing else).
I now try again with GENERIC, and it actually is compiling...
lets look whether it works.
I hope a non-generic will solve the sound freeze :)

-mirabilos
-- 
by telnet

Re: 00_rwsem-11, 2.4.4-ac11 and gcc-3(2001-05-14)

[David Howells]

The compiler should be now fixed in this respect, for both my stuff that's in
the kernel and Andrea's desired replacement. The problem appears to have been
triggered by having two "input+output" constraints (eg: "+r", "+m"). However,
I can't test this because the head of the CVS trunk doesn't seem to have been
able to build and test successfully since just before the fix was
applied. (I'm going on the codesourcery builds for this).

David