/usr/include/diet/sys/io.h is in dietlibc-dev 0.33~cvs20120325-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | #ifndef _SYS_IO_H
#define _SYS_IO_H
#include <sys/cdefs.h>
__BEGIN_DECLS
extern int ioperm(unsigned long from, unsigned long num, int turn_on) __THROW;
extern int iopl(int level) __THROW;
#ifndef __STRICT_ANSI__
/* anyone have a cleaner solution for this mess? */
#if defined(__i386__) || defined(__x86_64__)
static inline unsigned char inb (unsigned short int port) {
unsigned char _v;
__asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
return _v;
}
static inline unsigned short inw (unsigned short int port) {
unsigned short _v;
__asm__ __volatile__ ("inw %w1,%0":"=a" (_v):"Nd" (port));
return _v;
}
static inline unsigned int inl (unsigned short int port) {
unsigned int _v;
__asm__ __volatile__ ("inl %w1,%0":"=a" (_v):"Nd" (port));
return _v;
}
static inline void outb (unsigned char value, unsigned short int port) {
__asm__ __volatile__ ("outb %b0,%w1": :"a" (value), "Nd" (port));
}
static inline void outw (unsigned short value, unsigned short int port) {
__asm__ __volatile__ ("outw %w0,%w1": :"a" (value), "Nd" (port));
}
static inline void outl (unsigned int value, unsigned short int port) {
__asm__ __volatile__ ("outl %0,%w1": :"a" (value), "Nd" (port));
}
#endif
#endif
__END_DECLS
#endif
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