big bug fixed, still some problems with flow control

[avr-crypto-lib.git] / twister-small-asm.S

diff --git a/twister-small-asm.S b/twister-small-asm.S
index e1ee3100882ec266b3f9185d35b7bb7983f7f62c..6cfda293836a90d48f48881f68d04b830c26c079 100644 (file)
--- a/twister-small-asm.S
+++ b/twister-small-asm.S
@@ -1,6 +1,6 @@
 /* twister-small-asm.S */
 /*
-    This file is part of the Crypto-avr-lib/microcrypt-lib.
+    This file is part of the AVR-Crypto-Lib.
     Copyright (C) 2008  Daniel Otte (daniel.otte@rub.de)
 
     This program is free software: you can redistribute it and/or modify
@@ -123,15 +123,15 @@ twister_small_lastBlock:
        movw r30, TMP_SAVE0     
        ldi r20, 0x80
        sub r19, r18 /* r18: bytes to copy, r19: bytes to clear */
-       
+
        ld r0, X+       
-3:
-       tst r18
+3:     tst r18
        breq 4f
+31:
        st Z+, r0
        ld r0, X+
        dec r18
-       
+       brne 31b
 4:     
        mov r18, LEN_SAVE0
        andi r18, 0x07
@@ -146,11 +146,14 @@ twister_small_lastBlock:
 
 5:
        st Z+, r20      
+
+       tst r19
+       breq 7f
 6:     
        st Z+, r1
        dec r19
        brne 6b
-       
+7:     
        movw r24, CTX_SAVE0
        movw r22, TMP_SAVE0
        rcall twister_small_nextBlock