/usr/include/x86_64-linux-gnu/sys/io.h is in libc6-dev 2.27-3ubuntu1.
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 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 | /* Copyright (C) 1996-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_IO_H
#define _SYS_IO_H 1
#include <features.h>
__BEGIN_DECLS
/* If TURN_ON is TRUE, request for permission to do direct i/o on the
port numbers in the range [FROM,FROM+NUM-1]. Otherwise, turn I/O
permission off for that range. This call requires root privileges.
Portability note: not all Linux platforms support this call. Most
platforms based on the PC I/O architecture probably will, however.
E.g., Linux/Alpha for Alpha PCs supports this. */
extern int ioperm (unsigned long int __from, unsigned long int __num,
int __turn_on) __THROW;
/* Set the I/O privilege level to LEVEL. If LEVEL>3, permission to
access any I/O port is granted. This call requires root
privileges. */
extern int iopl (int __level) __THROW;
#if defined __GNUC__ && __GNUC__ >= 2
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 char
inb_p (unsigned short int __port)
{
unsigned char _v;
__asm__ __volatile__ ("inb %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (__port));
return _v;
}
static __inline unsigned short int
inw (unsigned short int __port)
{
unsigned short _v;
__asm__ __volatile__ ("inw %w1,%0":"=a" (_v):"Nd" (__port));
return _v;
}
static __inline unsigned short int
inw_p (unsigned short int __port)
{
unsigned short int _v;
__asm__ __volatile__ ("inw %w1,%0\noutb %%al,$0x80":"=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 unsigned int
inl_p (unsigned short int __port)
{
unsigned int _v;
__asm__ __volatile__ ("inl %w1,%0\noutb %%al,$0x80":"=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
outb_p (unsigned char __value, unsigned short int __port)
{
__asm__ __volatile__ ("outb %b0,%w1\noutb %%al,$0x80": :"a" (__value),
"Nd" (__port));
}
static __inline void
outw (unsigned short int __value, unsigned short int __port)
{
__asm__ __volatile__ ("outw %w0,%w1": :"a" (__value), "Nd" (__port));
}
static __inline void
outw_p (unsigned short int __value, unsigned short int __port)
{
__asm__ __volatile__ ("outw %w0,%w1\noutb %%al,$0x80": :"a" (__value),
"Nd" (__port));
}
static __inline void
outl (unsigned int __value, unsigned short int __port)
{
__asm__ __volatile__ ("outl %0,%w1": :"a" (__value), "Nd" (__port));
}
static __inline void
outl_p (unsigned int __value, unsigned short int __port)
{
__asm__ __volatile__ ("outl %0,%w1\noutb %%al,$0x80": :"a" (__value),
"Nd" (__port));
}
static __inline void
insb (unsigned short int __port, void *__addr, unsigned long int __count)
{
__asm__ __volatile__ ("cld ; rep ; insb":"=D" (__addr), "=c" (__count)
:"d" (__port), "0" (__addr), "1" (__count));
}
static __inline void
insw (unsigned short int __port, void *__addr, unsigned long int __count)
{
__asm__ __volatile__ ("cld ; rep ; insw":"=D" (__addr), "=c" (__count)
:"d" (__port), "0" (__addr), "1" (__count));
}
static __inline void
insl (unsigned short int __port, void *__addr, unsigned long int __count)
{
__asm__ __volatile__ ("cld ; rep ; insl":"=D" (__addr), "=c" (__count)
:"d" (__port), "0" (__addr), "1" (__count));
}
static __inline void
outsb (unsigned short int __port, const void *__addr,
unsigned long int __count)
{
__asm__ __volatile__ ("cld ; rep ; outsb":"=S" (__addr), "=c" (__count)
:"d" (__port), "0" (__addr), "1" (__count));
}
static __inline void
outsw (unsigned short int __port, const void *__addr,
unsigned long int __count)
{
__asm__ __volatile__ ("cld ; rep ; outsw":"=S" (__addr), "=c" (__count)
:"d" (__port), "0" (__addr), "1" (__count));
}
static __inline void
outsl (unsigned short int __port, const void *__addr,
unsigned long int __count)
{
__asm__ __volatile__ ("cld ; rep ; outsl":"=S" (__addr), "=c" (__count)
:"d" (__port), "0" (__addr), "1" (__count));
}
#endif /* GNU C */
__END_DECLS
#endif /* _SYS_IO_H */
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