33 lines
1.0 KiB
ArmAsm
33 lines
1.0 KiB
ArmAsm
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/* A memcpy.c for FT32
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Copyright (C) 2014 FTDI (support@ftdichip.com)
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The authors hereby grant permission to use, copy, modify, distribute,
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and license this software and its documentation for any purpose, provided
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that existing copyright notices are retained in all copies and that this
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notice is included verbatim in any distributions. No written agreement,
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license, or royalty fee is required for any of the authorized uses.
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Modifications to this software may be copyrighted by their authors
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and need not follow the licensing terms described here, provided that
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the new terms are clearly indicated on the first page of each file where
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they apply. */
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.text
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.global memcpy
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.type memcpy,@function
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memcpy:
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ldk $r3,32764
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1:
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cmp $r2,$r3
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jmpc lte,2f
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memcpy.b $r0,$r1,$r3
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add $r0,$r0,$r3
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add $r1,$r1,$r3
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sub $r2,$r2,$r3
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jmp 1b
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2:
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memcpy.b $r0,$r1,$r2
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return
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.Lend2:
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.size memcpy,.Lend2-memcpy
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