linux/arch/arm64/include/asm/vdso.h
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   1/*
   2 * Copyright (C) 2012 ARM Limited
   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 * This program is distributed in the hope that it will be useful,
   9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 * GNU General Public License for more details.
  12 *
  13 * You should have received a copy of the GNU General Public License
  14 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15 */
  16#ifndef __ASM_VDSO_H
  17#define __ASM_VDSO_H
  18
  19#ifdef __KERNEL__
  20
  21/*
  22 * Default link address for the vDSO.
  23 * Since we randomise the VDSO mapping, there's little point in trying
  24 * to prelink this.
  25 */
  26#define VDSO_LBASE      0x0
  27
  28#ifndef __ASSEMBLY__
  29
  30#include <generated/vdso-offsets.h>
  31
  32#define VDSO_SYMBOL(base, name)                                            \
  33({                                                                         \
  34        (void *)(vdso_offset_##name - VDSO_LBASE + (unsigned long)(base)); \
  35})
  36
  37#endif /* !__ASSEMBLY__ */
  38
  39#endif /* __KERNEL__ */
  40
  41#endif /* __ASM_VDSO_H */
  42