/usr/include/x86_64-linux-musl/bits/io.h is in musl-dev 0.9.15-1.
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 | static __inline void outb(unsigned char __val, unsigned short __port)
{
__asm__ volatile ("outb %0,%1" : : "a" (__val), "dN" (__port));
}
static __inline void outw(unsigned short __val, unsigned short __port)
{
__asm__ volatile ("outw %0,%1" : : "a" (__val), "dN" (__port));
}
static __inline void outl(unsigned int __val, unsigned short __port)
{
__asm__ volatile ("outl %0,%1" : : "a" (__val), "dN" (__port));
}
static __inline unsigned char inb(unsigned short __port)
{
unsigned char __val;
__asm__ volatile ("inb %1,%0" : "=a" (__val) : "dN" (__port));
return __val;
}
static __inline unsigned short inw(unsigned short __port)
{
unsigned short __val;
__asm__ volatile ("inw %1,%0" : "=a" (__val) : "dN" (__port));
return __val;
}
static __inline unsigned int inl(unsigned short __port)
{
unsigned int __val;
__asm__ volatile ("inl %1,%0" : "=a" (__val) : "dN" (__port));
return __val;
}
static __inline void outsb(unsigned short __port, const void *__buf, unsigned long __n)
{
__asm__ volatile ("cld; rep; outsb"
: "+S" (__buf), "+c" (__n)
: "d" (__port));
}
static __inline void outsw(unsigned short __port, const void *__buf, unsigned long __n)
{
__asm__ volatile ("cld; rep; outsw"
: "+S" (__buf), "+c" (__n)
: "d" (__port));
}
static __inline void outsl(unsigned short __port, const void *__buf, unsigned long __n)
{
__asm__ volatile ("cld; rep; outsl"
: "+S" (__buf), "+c"(__n)
: "d" (__port));
}
static __inline void insb(unsigned short __port, void *__buf, unsigned long __n)
{
__asm__ volatile ("cld; rep; insb"
: "+D" (__buf), "+c" (__n)
: "d" (__port));
}
static __inline void insw(unsigned short __port, void *__buf, unsigned long __n)
{
__asm__ volatile ("cld; rep; insw"
: "+D" (__buf), "+c" (__n)
: "d" (__port));
}
static __inline void insl(unsigned short __port, void *__buf, unsigned long __n)
{
__asm__ volatile ("cld; rep; insl"
: "+D" (__buf), "+c" (__n)
: "d" (__port));
}
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