linux/arch/avr32/mm/copy_page.S
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   1/*
   2 * Copyright (C) 2004-2006 Atmel Corporation
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License version 2 as
   6 * published by the Free Software Foundation.
   7 */
   8#include <linux/linkage.h>
   9#include <asm/page.h>
  10
  11/*
  12 * copy_page
  13 *
  14 * r12          to (P1 address)
  15 * r11          from (P1 address)
  16 * r8-r10       scratch
  17 */
  18        .text
  19        .global copy_page
  20copy_page:
  21        sub     r10, r11, -(1 << PAGE_SHIFT)
  22        /* pref r11[0] */
  231:      /* pref r11[8] */
  24        ld.d    r8, r11++
  25        st.d    r12++, r8
  26        cp      r11, r10
  27        brlo    1b
  28        mov     pc, lr
  29
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