LXR linux/arch/blackfin/lib/strcpy.S

   1/*
   2 * Copyright 2005-2010 Analog Devices Inc.
   3 *
   4 * Licensed under the Clear BSD license or the GPL-2 (or later)
   5 */
   6
   7#include <linux/linkage.h>
   8
   9/* void *strcpy(char *dest, const char *src);
  10 * R0 = address (dest)
  11 * R1 = address (src)
  12 *
  13 * Returns a pointer to the destination string dest
  14 */
  15
  16#ifdef CONFIG_STRCPY_L1
  17.section .l1.text
  18#else
  19.text
  20#endif
  21
  22.align 2
  23
  24ENTRY(_strcpy)
  25        P0 = R0 ;       /* dst*/
  26        P1 = R1 ;       /* src*/
  27
  281:
  29        R1 = B [P1++] (Z);
  30        B [P0++] = R1;
  31        CC = R1;
  32        if cc jump 1b (bp);
  33        RTS;
  34
  35ENDPROC(_strcpy)
  36