sha/asm/sha1-x86_64.pl: fix crash in SHAEXT code on Windows.

RT#4530

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 7123aa81e9fb19afb11fdf3850662c5f7ff1f19c)

diff --git a/crypto/sha/asm/sha1-x86_64.pl b/crypto/sha/asm/sha1-x86_64.pl
index 5f375fc6886b3ab5998ec7b02fbbde4db6aaface..752138b0eac15d63220bfef52e7f2a680d51914e 100755 (executable)
--- a/crypto/sha/asm/sha1-x86_64.pl
+++ b/crypto/sha/asm/sha1-x86_64.pl
@@ -372,9 +372,9 @@ $code.=<<___;
 .align 16
 .Loop_shaext:
        dec             $num
-       lea             0x40($inp),%rax         # next input block
+       lea             0x40($inp),%r8          # next input block
        paddd           @MSG[0],$E
-       cmovne          %rax,$inp
+       cmovne          %r8,$inp
        movdqa          $ABCD,$ABCD_SAVE        # offload $ABCD
 ___
 for($i=0;$i<20-4;$i+=2) {