40 lines
658 B
ArmAsm
40 lines
658 B
ArmAsm
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#include <avr/io.h>
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#define FRAME_SIZE 8
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.section .text
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;
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.global copy_layer
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.type copy_layer, @function
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copy_layer:
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movw X, r24 ; Source frame.
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movw Z, r22 ; Target frame.
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ldi r24, FRAME_SIZE*2 ; Number of iterations needed.
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copy:
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ld r0, X+
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st Z+, r0
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dec r24
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brne copy
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ret
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.global push_layer
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.type push_layer, @function
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push_layer:
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movw X, r24 ; Source frame.
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movw Z, r22 ; Target frame.
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ldi r24, FRAME_SIZE ; Number of iterations needed.
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push:
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ldd r0, Z+1
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st Z+, r0
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ld r0, X+
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st Z+, r0
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dec r24
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brne push
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ret
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