Mercurial > hg > Members > kono > nitros9-code
diff lib/alib/parsnstr.as @ 2783:03f26e88b809 lwtools-port
Renamed files and setup for lwasm/lwlink work
author | Boisy Pitre <boisy.pitre@nuance.com> |
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date | Sat, 26 Jan 2013 17:18:24 -0600 |
parents | lib/alib/parsnstr.a@aaba193af04f |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lib/alib/parsnstr.as Sat Jan 26 17:18:24 2013 -0600 @@ -0,0 +1,37 @@ +* Parse sign bit terminated string to convert it to a +* null terminated string. Note: if X and Y are the same +* the existing string will be overwritten -- don't do this +* with psects... + +* OTHER MODULES NEEDED: none + +* ENTRY: X=start of sign bit terminated string +* Y=buffer for null terminated string + +* EXIT: D=string size (not including null) +* All other regs (except cc) preserved + + + nam Parse sign-bit terminated string + ttl Assembler Library Module + + + section .text + + +PARSNSTR: + pshs x + lbsr STRHCPY copy string + tfr y,x point to moved string + lbsr STRHLEN find length of string + pshs d size + leax d,x + lda ,-x get final byte + anda #%01111111 clear sign bit + clrb add null terminator + std ,x + puls d,x,pc + + + endsect +