[Bug libstdc++/17627] New: M68060 fails with libstdc++-v3/config/cpu/m68k/atomicity.h

["cjohns at cybertec dot com dot au" <gcc-bugzilla at gcc dot gnu dot org>]

Target: m68k-rtems
Version: 3.3.1
OS: RTEMS (4.6.1)
Hardware: MVME172 SBC

The M68060 User Manual:

 http://www.freescale.com/files/32bit/doc/ref_manual/MC68060UM.pdf

states in Table D-1 (page D-2) that the CAS instruction is a
"Software-supported" instruction. On my M68EC060 the 'cas' instruction results
in an exception.

Software emulation of this instruction in this situation would not seem
appropriate. Further RTEMS does not support software emulation of missing
instructions on the M68060. It assumes code is rebuilt with the -m68060 flag.

Removing M68060 from the first #if test results in a working C++ application.

I am raising this bug as the current version in GCC's CVS is the same as the
3.3.1 version.

-- 
           Summary: M68060 fails with libstdc++-
                    v3/config/cpu/m68k/atomicity.h
           Product: gcc
           Version: 3.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: cjohns at cybertec dot com dot au
                CC: gcc-bugs at gcc dot gnu dot org,joel dot sherrill at
                    oarcorp dot com
 GCC build triplet: i386-pc-linux-gnu
  GCC host triplet: i386-pc-linux-gnu
GCC target triplet: m68k-rtems


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17627