arch/sparc/lib/strncmp_64.S

   1 /*
   2  * Sparc64 optimized strncmp code.
   3  *
   4  * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
   5  */
   6
   7 #include <linux/linkage.h>
   8 #include <asm/asi.h>
   9
  10         .text
  11 ENTRY(strncmp)
  12         brlez,pn %o2, 3f
  13          lduba  [%o0] (ASI_PNF), %o3
  14 1:
  15         add     %o0, 1, %o0
  16         ldub    [%o1], %o4
  17         brz,pn  %o3, 2f
  18          add    %o1, 1, %o1
  19         cmp     %o3, %o4
  20         bne,pn  %icc, 2f
  21          subcc  %o2, 1, %o2
  22         bne,a,pt %xcc, 1b
  23          ldub   [%o0], %o3
  24 2:
  25         retl
  26          sub    %o3, %o4, %o0
  27 3:
  28         retl
  29          clr    %o0
  30 ENDPROC(strncmp)