**************************************

* STRCMP: compare two null terminated strings.

* NOTE: This routine first finds the length of both
*       strings and passes the length of the longer
*       one to strncmp.

* OTHER MODULES NEEDED: STRNCMP, STRLEN


* ENTRY: X=start of 1st string
*        Y=start of 2nd string

* EXIT: CC zero set  if equal (beq)
*          carry + zero clear if 1>2 (bhi)
*          carry set if 1<2 (blo)


 nam Compare Strings
 ttl Assembler Library Module


 section .text

STRCMP:
 pshs d
 lbsr STRLEN find len of str1
 pshs d
 exg y,x find len of str2
 lbsr STRLEN
 exg y,x restore ptrs
 cmpd ,s
 bhi ok
 ldd ,s get bigger value

ok
 leas 2,s clean stack
 lbsr STRNCMP go compare
 puls d,pc go home

 endsect