stack_helper.h

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#pragma once
 
#define __ACCESS_PTR(type, ptr) (*(type *)(ptr))
#define __MOVE_PTR_DOWN(type, ptr) ((ptr) -= sizeof(type))
#define __MOVE_PTR_UP(type, ptr) ((ptr) += sizeof(type))
#define PUSH_VALUE_ON_STACK(ptr, value) (__ACCESS_PTR(__typeof__(value), __MOVE_PTR_DOWN(__typeof__(value), ptr)) = (value))
#define POP_VALUE_FROM_STACK(value, ptr) ({value = __ACCESS_PTR(__typeof__(value), ptr); __MOVE_PTR_UP(__typeof__(value), ptr); })