arch/arm64/include/asm/vdso.h

   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 */