md5_lastBlock() now in ASM

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

diff --git a/avr-asm-macros.S b/avr-asm-macros.S
index f878be85914f0fa6483195fd68aaa68a3b905029..4991ceea0ec1a5fa39353305dafb9b52d8abcc41 100644 (file)
--- a/avr-asm-macros.S
+++ b/avr-asm-macros.S
@@ -82,6 +82,33 @@
        out _SFR_IO_ADDR(SPL), \reg1
 .endm
 
+
+.macro stack_alloc_large size:req, reg1=r30, reg2=r31
+       in r0, _SFR_IO_ADDR(SREG)
+       in \reg1, _SFR_IO_ADDR(SPL)
+       in \reg2, _SFR_IO_ADDR(SPH)
+       subi \reg1, lo8(\size)
+       sbci \reg2, hi8(\size)   
+       cli
+       out _SFR_IO_ADDR(SPH), \reg2
+       out _SFR_IO_ADDR(SREG), r0
+       out _SFR_IO_ADDR(SPL), \reg1
+.endm
+
+.macro stack_free_large 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, (\size-63) 
+       cli
+       out _SFR_IO_ADDR(SPH), \reg2
+       out _SFR_IO_ADDR(SREG), r0
+       out _SFR_IO_ADDR(SPL), \reg1
+.endm
+
+
+
 /*******************************************************************************
 * END of MACRO SECTION                                                         *
 *******************************************************************************/