chacha/asm/chacha-ppc.pl: fix typo.

RT#4365

Reviewed-by: Rich Salz <rsalz@openssl.org>

diff --git a/crypto/chacha/asm/chacha-ppc.pl b/crypto/chacha/asm/chacha-ppc.pl
index 23f7fad9a3d9e2c862b0ce6ddb497095bd208e74..2bb3fce8ed97265030ea1574b1f44ea91b93abca 100755 (executable)
--- a/crypto/chacha/asm/chacha-ppc.pl
+++ b/crypto/chacha/asm/chacha-ppc.pl
@@ -477,7 +477,7 @@ $code.=<<___;
        $PUSH   r29,`$FRAME-$SIZE_T*3`($sp)
        $PUSH   r30,`$FRAME-$SIZE_T*2`($sp)
        $PUSH   r31,`$FRAME-$SIZE_T*1`($sp)
-       li      12,-1
+       li      r12,-1
        $PUSH   r0, `$FRAME+$LRSAVE`($sp)
        mtspr   256,r12                         # preserve all AltiVec registers