arch/arm64/include/asm/compiler.h

   1 /*
   2  * Based on arch/arm/include/asm/compiler.h
   3  *
   4  * Copyright (C) 2012 ARM Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18 #ifndef __ASM_COMPILER_H
  19 #define __ASM_COMPILER_H
  20
  21 /*
  22  * This is used to ensure the compiler did actually allocate the register we
  23  * asked it for some inline assembly sequences.  Apparently we can't trust the
  24  * compiler from one version to another so a bit of paranoia won't hurt.  This
  25  * string is meant to be concatenated with the inline asm string and will
  26  * cause compilation to stop on mismatch.  (for details, see gcc PR 15089)
  27  */
  28 #define __asmeq(x, y)  ".ifnc " x "," y " ; .err ; .endif\n\t"
  29
  30 #endif  /* __ASM_COMPILER_H */