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annotate lib/alib/strncpy.as @ 2783:03f26e88b809 lwtools-port

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Renamed files and setup for lwasm/lwlink work
author Boisy Pitre <boisy.pitre@nuance.com>
date Sat, 26 Jan 2013 17:18:24 -0600
parents lib/alib/strncpy.a@aaba193af04f
children
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1 **********************************
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2
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3 * STRNCPY: copy N bytes of a null terminated string
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4 * User must ensure there is room in buffer!!!
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5 * If N>string length only N bytes will be moved
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6
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7 * OTHER MODULES NEEDED: STRLEN, MEMMOVE
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8
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9 * ENTRY: X=start of string to move
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10 * Y=buffer for copy of string
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12 * EXIT: D = actual number of bytes moved
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13 * all other regs preserved (except cc)
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16 nam Copy partial String
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17 ttl Assembler Library Module
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aaba193af04f Updated code to use lwasm/lwlink
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20 section .text
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21
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22 STRNCPY:
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23 pshs d bytes wanted to move
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24 lbsr STRLEN find length of string
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25 addd #1 move NULL also
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26 cmpd ,s get smaller of passed/actual size
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27 bls skip use actual leng
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28 ldd ,s use passed leng²²
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29 skip
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30 lbsr MEMMOVE move it
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31 leas 2,s
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32 rts
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34 endsect
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aaba193af04f Updated code to use lwasm/lwlink
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