1#ifndef __LIB_USER_STDIO_H
2#define __LIB_USER_STDIO_H
#define PRINTF_FORMAT(FMT, FIRST)
__builtin_va_list va_list
GCC has <stdarg.h> functionality as built-ins, so all we need is to use it.
int hprintf(int, const char *,...) PRINTF_FORMAT(2
int int vhprintf(int, const char *, va_list) PRINTF_FORMAT(2