+skein and ubi (512 and 1024bit mode) in assembler

[avr-crypto-lib.git] / avr-asm-macros.S

diff --git a/avr-asm-macros.S b/avr-asm-macros.S
index 0fd325dfc168c6380fe941be23bb90b2971c1ecc..829562b7d1b680241df3d8786e8f443ba3edbd4b 100644 (file)
--- a/avr-asm-macros.S
+++ b/avr-asm-macros.S
@@ -120,6 +120,24 @@
        out _SFR_IO_ADDR(SPL), \reg1
 .endm
 
+.macro stack_free_large3 size:req, reg1=r30, reg2=r31
+       in r0, _SFR_IO_ADDR(SREG)
+       in \reg1, _SFR_IO_ADDR(SPL)
+       in \reg2, _SFR_IO_ADDR(SPH)
+       push r16
+       push r17
+       ldi r16, lo8(\size)
+       ldi r17, hi8(\size)
+       add \reg1, r16
+       adc \reg2, r17
+       pop r17
+       pop r16 
+       cli
+       out _SFR_IO_ADDR(SPH), \reg2
+       out _SFR_IO_ADDR(SREG), r0
+       out _SFR_IO_ADDR(SPL), \reg1
+.endm
+
 
 /*******************************************************************************
 * END of MACRO SECTION                                                         *