optimized cubehash a bit

[avr-crypto-lib.git] / cubehash / cubehash_rotates.S

diff --git a/cubehash/cubehash_rotates.S b/cubehash/cubehash_rotates.S
new file mode 100644 (file)
index 0000000..2e4ca16
--- /dev/null
+++ b/cubehash/cubehash_rotates.S
@@ -0,0 +1,57 @@
+/* cubehash_rotates.S */
+/*
+    This file is part of the ARM-Crypto-Lib.
+    Copyright (C) 2006-2010 Daniel Otte (daniel.otte@rub.de)
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+.global rotate7left
+rotate7left:
+       mov r0, r25
+       mov r25, r24
+       mov r24, r23
+       mov r23, r22
+       mov r22, r0
+       ror r0
+       ror r25
+       ror r24
+       ror r23
+       ror r22
+       ret
+
+.global rotate11left
+rotate11left:
+       mov r0, r25
+       mov r25, r24
+       mov r24, r23
+       mov r23, r22
+       mov r22, r0
+       rol r0
+       rol r23
+       rol r24
+       rol r25
+       rol r22
+       rol r0
+       rol r23
+       rol r24
+       rol r25
+       rol r22
+       rol r0
+       rol r23
+       rol r24
+       rol r25
+       rol r22
+       ret
+