src/runtime/arm64-arch.h

   1 #ifndef _ARM64_ARCH_H
   2 #define _ARM64_ARCH_H
   3
   4 #define ALIEN_STACK_GROWS_DOWNWARD
   5
   6 #ifdef LISP_FEATURE_SB_THREAD
   7 static inline lispobj
   8 swap_lispobjs(volatile lispobj *dest, lispobj value)
   9 {
  10     lispobj old_value;
  11     int temp;
  12
  13     asm volatile ("1: ldaxr %0,[%2];"
  14                   "   stlxr %w1,%3,[%2];"
  15                   "   cbnz %w1,1b;"
  16                   : "=&r" (old_value), "=&r" (temp)
  17                   : "r" (dest), "r" (value)
  18                   : "memory");
  19     return old_value;
  20 }
  21 #endif
  22
  23 #define ARCH_HAS_LINK_REGISTER
  24
  25 #endif /* _ARM64_ARCH_H */