view lib/alib/parsnstr.as @ 3003:68a167bc476d

level3 makefiles: Order BOOTERS list like in level2
author Tormod Volden <debian.tormod@gmail.com>
date Sun, 26 Oct 2014 13:02:12 +0100
parents 03f26e88b809
children
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* 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