2017-04-11 21:13:36 +00:00
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.file "strcpy.S"
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.section .text
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.global _strcpy
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.type _strcpy,@function
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_strcpy:
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2017-10-07 00:16:47 +00:00
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;; R1: dest
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;; R2: source
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#ifdef __RX_DISALLOW_STRING_INSNS__
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mov r1, r4 ; Leave the destination address unchanged in the result register.
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1: mov.b [r2+], r5
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mov.b r5, [r4+]
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cmp #0, r5
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bne 1b
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rts
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#else
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2017-04-11 21:13:36 +00:00
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mov r1, r4
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mov #-1, r3 ; Strictly speaking this is incorrect, but I doubt if anyone will ever know.
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smovu
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mov r4, r1
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rts
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2017-10-07 00:16:47 +00:00
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#endif
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.size _strcpy, . - _strcpy
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