[avr-libc-dev] eeprom_read_byte and clr ret_hi

Wed, 18 Nov 2009 15:53:40 -0800 

eeprom_read_byte returns a uint8_t. Why does it clear r25?
eerd_byte.S:
        clr     ret_hi

Does the AVR ABI require that r25 be zeroed in a function returning a
single byte? If not, this instruction could be removed.

Cheers,
Shaun


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