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- /*
- * Low-level console I/O functions
- */
-
- #ifndef _STDDEF
- typedef int ptrdiff_t; /* result type of pointer difference */
- typedef unsigned size_t; /* type yielded by sizeof */
- typedef unsigned short wchar_t; /* wide char type */
- #define _STDDEF
- #define offsetof(ty, mem) ((int)&(((ty *)0)->mem))
- #endif _STDDEF
-
- #ifndef NULL
- #define NULL ((void *)0)
- #endif NULL
-
- extern int errno; /* system error number */
-
- #if !_HOSTED
- extern void init_uart(void);
- #endif
- extern char getch(void);
- extern char getche(void);
- extern void putch(char);
- extern void ungetch(char);
- extern int kbhit(void);
- extern char * cgets(char *);
- extern void cputs(const char *);
-