A bug in GCC 2.95.2 for SPARC

[David S. Miller]

   Date: Thu, 11 May 2000 16:07:05 -0700 (PDT)
   From: James Cheng <James.Cheng@eng.sun.com>

   It turned out to be an implementation dependency of the UltraSPARC.
   On page 249 of "UltraSPARC User's Manual, Revision 2.0 - June 1996"
   there is:

	   LDDF{A}/STDF{A} cause an LDDF/STDF_mem_address_not_aligned
	   trap if the effective address is 32-bit aligned but not
	   64-bit (doubleword) aligned.

   I have tried the gcc 2.96 version 2.96 20000501 (experimental) with 
   -mcpu=ultrasparc, and the problem I reported earlier is gone.

Solaris should have been resolving and handling those unaligned
accesses for the application though, at least Linux on UltraSparc
does.

Later,
David S. Miller
davem@redhat.com