github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/mpn/sparc32/v9/README (about)

     1  Code for SPARC processors implementing version 9 of the SPARC architecture.
     2  This code is for systems that doesn't preserve the full 64-bit contents of
     3  integer register at context switch.  For other systems (such as Solaris 7 or
     4  later) use the code in ../../sparc64.