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@@ -1,4 +1,4 @@
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-/* Copyright (C) 1996, 2000 Free Software Foundation, Inc.
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+/* Copyright (C) 1996, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@@ -17,162 +17,32 @@
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Boston, MA 02111-1307, USA. */
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#ifndef _SYS_IO_H
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-#define _SYS_IO_H 1
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+#define _SYS_IO_H 1
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#include <features.h>
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__BEGIN_DECLS
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/* If TURN_ON is TRUE, request for permission to do direct i/o on the
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port numbers in the range [FROM,FROM+NUM-1]. Otherwise, turn I/O
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- permission off for that range. This call requires root privileges.
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-
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- Portability note: not all Linux platforms support this call. Most
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- platforms based on the PC I/O architecture probably will, however.
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- E.g., Linux/Alpha for Alpha PCs supports this. */
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+ permission off for that range. This call requires root privileges. */
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extern int ioperm __P ((unsigned long int __from, unsigned long int __num,
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int __turn_on));
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-/* Set the I/O privilege level to LEVEL. If LEVEL>3, permission to
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- access any I/O port is granted. This call requires root
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- privileges. */
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+/* Set the I/O privilege level to LEVEL. If LEVEL is nonzero,
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+ permission to access any I/O port is granted. This call requires
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+ root privileges. */
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extern int iopl __P ((int __level));
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+/* The functions that actually perform reads and writes. */
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+extern unsigned char inb (unsigned long port);
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+extern unsigned short inw (unsigned long port);
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+extern unsigned long inl (unsigned long port);
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-extern inline unsigned char
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-inb (unsigned short port)
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-{
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- unsigned char _v;
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-
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- __asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
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- return _v;
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-}
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-
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-extern inline unsigned char
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-inb_p (unsigned short port)
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-{
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- unsigned char _v;
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-
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- __asm__ __volatile__ ("inb %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
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- return _v;
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-}
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-
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-extern inline unsigned short
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-inw (unsigned short port)
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-{
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- unsigned short _v;
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-
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- __asm__ __volatile__ ("inw %w1,%0":"=a" (_v):"Nd" (port));
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- return _v;
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-}
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-
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-extern inline unsigned short
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-inw_p (unsigned short port)
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-{
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- unsigned short _v;
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-
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- __asm__ __volatile__ ("inw %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
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- return _v;
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-}
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-
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-extern inline unsigned int
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-inl (unsigned short port)
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-{
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- unsigned int _v;
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-
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- __asm__ __volatile__ ("inl %w1,%0":"=a" (_v):"Nd" (port));
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- return _v;
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-}
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-
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-extern inline unsigned int
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-inl_p (unsigned short port)
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-{
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- unsigned int _v;
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- __asm__ __volatile__ ("inl %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
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- return _v;
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-}
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-
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-extern inline void
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-outb (unsigned char value, unsigned short port)
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-{
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- __asm__ __volatile__ ("outb %b0,%w1": :"a" (value), "Nd" (port));
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-}
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-
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-extern inline void
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-outb_p (unsigned char value, unsigned short port)
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-{
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- __asm__ __volatile__ ("outb %b0,%w1\noutb %%al,$0x80": :"a" (value),
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- "Nd" (port));
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-}
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-
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-extern inline void
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-outw (unsigned short value, unsigned short port)
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-{
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- __asm__ __volatile__ ("outw %w0,%w1": :"a" (value), "Nd" (port));
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-
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-}
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-
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-extern inline void
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-outw_p (unsigned short value, unsigned short port)
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-{
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- __asm__ __volatile__ ("outw %w0,%w1\noutb %%al,$0x80": :"a" (value),
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- "Nd" (port));
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-}
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-
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-extern inline void
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-outl (unsigned int value, unsigned short port)
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-{
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- __asm__ __volatile__ ("outl %0,%w1": :"a" (value), "Nd" (port));
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-}
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-
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-extern inline void
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-outl_p (unsigned int value, unsigned short port)
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-{
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- __asm__ __volatile__ ("outl %0,%w1\noutb %%al,$0x80": :"a" (value),
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- "Nd" (port));
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-}
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-
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-extern inline void
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-insb (unsigned short port, void *addr, unsigned long count)
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-{
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- __asm__ __volatile__ ("cld ; rep ; insb":"=D" (addr),
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- "=c" (count):"d" (port), "0" (addr), "1" (count));
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-}
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-
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-extern inline void
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-insw (unsigned short port, void *addr, unsigned long count)
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-{
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- __asm__ __volatile__ ("cld ; rep ; insw":"=D" (addr),
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- "=c" (count):"d" (port), "0" (addr), "1" (count));
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-}
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-
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-extern inline void
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-insl (unsigned short port, void *addr, unsigned long count)
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-{
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- __asm__ __volatile__ ("cld ; rep ; insl":"=D" (addr),
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- "=c" (count):"d" (port), "0" (addr), "1" (count));
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-}
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-
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-extern inline void
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-outsb (unsigned short port, const void *addr, unsigned long count)
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-{
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- __asm__ __volatile__ ("cld ; rep ; outsb":"=S" (addr),
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- "=c" (count):"d" (port), "0" (addr), "1" (count));
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-}
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-
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-extern inline void
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-outsw (unsigned short port, const void *addr, unsigned long count)
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-{
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- __asm__ __volatile__ ("cld ; rep ; outsw":"=S" (addr),
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- "=c" (count):"d" (port), "0" (addr), "1" (count));
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-}
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-
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-extern inline void
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-outsl (unsigned short port, const void *addr, unsigned long count)
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-{
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- __asm__ __volatile__ ("cld ; rep ; outsl":"=S" (addr),
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- "=c" (count):"d" (port), "0" (addr), "1" (count));
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-}
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+extern void outb (unsigned char value, unsigned long port);
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+extern void outw (unsigned short value, unsigned long port);
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+extern void outl (unsigned long value, unsigned long port);
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__END_DECLS
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+
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#endif /* _SYS_IO_H */
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