#include <stdio.h>

#define __stringify_1(x) #x
#define __stringify(x) __stringify_1(x)

#define __ADDRESSABLE(sym) \
	static void * __addressable_##sym __attribute__((used)) = (void *)&(sym)

#define __GENDWARFKSYMS_EXPORT(sym) /* nothing */

#define ASM_NL "\n"

#define __EXPORT_SYMBOL_REF(sym)    \
	".balign 8"              ASM_NL \
	".quad " __stringify(sym)

#define ___EXPORT_SYMBOL(sym, license, ns...)  \
	".section \".export_symbol\",\"a\"" ASM_NL \
	"__export_symbol_" __stringify(sym) ":" ASM_NL \
	".asciz \"" license "\"" ASM_NL \
	".ascii \"" ns "\\0\"" ASM_NL \
	__EXPORT_SYMBOL_REF(sym) ASM_NL \
	".previous"

#define __EXPORT_SYMBOL(sym, license, ns)  \
	extern typeof(sym) sym;                \
	__ADDRESSABLE(sym);                    \
	__GENDWARFKSYMS_EXPORT(sym);           \
	asm(___EXPORT_SYMBOL(sym, license, ns))

#define EXPORT_SYMBOL(sym) __EXPORT_SYMBOL(sym, "license", "namespace")