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Assembly Source File  |  1994-10-27  |  1KB  |  39 lines
  1.     page    66,132
  2. ;******************************* COMPAR3.ASM ********************************
  3.  
  4. LIBSEG           segment byte public "LIB"
  5.         assume cs:LIBSEG , ds:nothing
  6.  
  7. ;----------------------------------------------------------------------------
  8. .xlist
  9.     include  mac.inc
  10.     include  common.inc
  11. .list
  12. comment 
  13. ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -( COMPARE )
  14. ;COMPARE3 - compare strings -cx- long, use case, update registers
  15. ;
  16. ; inputs:   DS:[SI] = address of string1
  17. ;           ES:[DI] = address of string2
  18. ;               CX  = length of compare
  19. ; 
  20. ; output:   if match  - si & di point at end of strings
  21. ;                     - cx = zero
  22. ;                     - flags are in "je" state
  23. ;           if different - si & di point one byte past the mismatch.
  24. ;                        - cx = number of bytes remaining to compare
  25. ;                        - flags are in "jne" state
  26. ;
  27. ;* * * * * * * * * * * * * *
  28. 
  29.     PUBLIC    COMPARE3
  30. COMPARE3    PROC    FAR
  31.     cld
  32.     repe    cmpsb
  33.     retf
  34. COMPARE3    ENDP
  35. ;------------------------------------------------------------------------
  36.  
  37. LIBSEG    ENDS
  38.     end
  39.