ulinux/compiler_misc.h

   1 #ifndef ULINUX_COMPILER_MISC_H
   2 #define ULINUX_COMPILER_MISC_H
   3 /******************************************************************************
   4 this code is protected by the GNU affero GPLv3
   5 author:Sylvain BERTRAND <sylvain.bertrand AT gmail dot com>
   6 *******************************************************************************/
   7 /*----------------------------------------------------------------------------*/
   8 #if __GNUC__
   9   #define unreachable __builtin_unreachable
  10   #define NOCLONE __attribute__((noclone))
  11   #define NOINLINE __attribute__((noinline))
  12 #else
  13   #define unreachable()
  14   /*too risky to have the entry point optimized out with a new C toolchain*/
  15 #endif
  16 /*----------------------------------------------------------------------------*/
  17
  18 /*----------------------------------------------------------------------------*/
  19 #if __GNUC__
  20   #define PACKED __attribute__((packed))
  21 #endif
  22
  23 #ifndef PACKED
  24   #error "the compiler must support packed structure"
  25 #endif
  26 /*----------------------------------------------------------------------------*/
  27 #endif