LXR linux/arch/m68k/include/asm/linkage.h

   1#ifndef __ASM_LINKAGE_H
   2#define __ASM_LINKAGE_H
   3
   4#define __ALIGN .align 4
   5#define __ALIGN_STR ".align 4"
   6
   7/*
   8 * Make sure the compiler doesn't do anything stupid with the
   9 * arguments on the stack - they are owned by the *caller*, not
  10 * the callee. This just fools gcc into not spilling into them,
  11 * and keeps it from doing tailcall recursion and/or using the
  12 * stack slots for temporaries, since they are live and "used"
  13 * all the way to the end of the function.
  14 */
  15#define asmlinkage_protect(n, ret, args...) \
  16        __asmlinkage_protect##n(ret, ##args)
  17#define __asmlinkage_protect_n(ret, args...) \
  18        __asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args)
  19#define __asmlinkage_protect0(ret) \
  20        __asmlinkage_protect_n(ret)
  21#define __asmlinkage_protect1(ret, arg1) \
  22        __asmlinkage_protect_n(ret, "m" (arg1))
  23#define __asmlinkage_protect2(ret, arg1, arg2) \
  24        __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2))
  25#define __asmlinkage_protect3(ret, arg1, arg2, arg3) \
  26        __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3))
  27#define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \
  28        __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
  29                              "m" (arg4))
  30#define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \
  31        __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
  32                              "m" (arg4), "m" (arg5))
  33#define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \
  34        __asmlinkage_protect_n(ret, "m" (arg1), "m" (arg2), "m" (arg3), \
  35                              "m" (arg4), "m" (arg5), "m" (arg6))
  36
  37#endif
  38