diff -up gmp-6.0.0/mpn/powerpc64/mode64/gcd_1.asm.rh1 gmp-6.0.0/mpn/powerpc64/mode64/gcd_1.asm

--- gmp-6.0.0/mpn/powerpc64/mode64/gcd_1.asm.rh1	2014-04-24 17:44:56.282296502 +0200

+++ gmp-6.0.0/mpn/powerpc64/mode64/gcd_1.asm	2014-04-24 17:46:07.291786670 +0200

@@ -43,6 +43,9 @@ define(`up',    `r3')

 define(`n',     `r4')

 define(`v0',    `r5')

+ifdef(`BMOD_1_TO_MOD_1_THRESHOLD',,

+  `define(`BMOD_1_TO_MOD_1_THRESHOLD',30)')

+

 EXTERN_FUNC(mpn_mod_1)

 EXTERN_FUNC(mpn_modexact_1c_odd)