X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;f=avr-asm-macros.S;h=0fd325dfc168c6380fe941be23bb90b2971c1ecc;hb=a0ce7501a539a69774754515268ab02297dabba7;hp=4991ceea0ec1a5fa39353305dafb9b52d8abcc41;hpb=a397db40b94b01a3ed72f9367961cf68d82593d1;p=avr-crypto-lib.git

diff --git a/avr-asm-macros.S b/avr-asm-macros.S
index 4991cee..0fd325d 100644
--- a/avr-asm-macros.S
+++ b/avr-asm-macros.S
@@ -1,6 +1,6 @@
 /* avr-asm-macros.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
@@ -107,6 +107,18 @@
 	out _SFR_IO_ADDR(SPL), \reg1
 .endm
 
+.macro stack_free_large2 size:req, reg1=r30, reg2=r31
+	in r0, _SFR_IO_ADDR(SREG)
+	in \reg1, _SFR_IO_ADDR(SPL)
+	in \reg2, _SFR_IO_ADDR(SPH)
+	adiw \reg1, 63
+	adiw \reg1, 63
+	adiw \reg1, (\size-63*2) 
+	cli
+	out _SFR_IO_ADDR(SPH), \reg2
+	out _SFR_IO_ADDR(SREG), r0
+	out _SFR_IO_ADDR(SPL), \reg1
+.endm
 
 
 /*******************************************************************************