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 #include <asm/export.h>
  10
  11         .text
  12 ENTRY(strncmp)
  13         brlez,pn %o2, 3f
  14          lduba  [%o0] (ASI_PNF), %o3
  15 1:
  16         add     %o0, 1, %o0
  17         ldub    [%o1], %o4
  18         brz,pn  %o3, 2f
  19          add    %o1, 1, %o1
  20         cmp     %o3, %o4
  21         bne,pn  %icc, 2f
  22          subcc  %o2, 1, %o2
  23         bne,a,pt %xcc, 1b
  24          ldub   [%o0], %o3
  25 2:
  26         retl
  27          sub    %o3, %o4, %o0
  28 3:
  29         retl
  30          clr    %o0
  31 ENDPROC(strncmp)
  32 EXPORT_SYMBOL(strncmp)