mirror of
git://git.musl-libc.org/musl
synced 2025-01-09 00:00:18 +00:00
61aa6324af
based on proposal by Isaac Dunham. nonexistance of bits/io.h will cause inclusion of sys/io.h to produce an error on archs that are not supposed to have it. this is probably the desired behavior, but the error message may be a bit unusual.
81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
int iopl(int);
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int ioperm(unsigned long, unsigned long, int);
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static __inline void outb(unsigned char __val, unsigned short __port)
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{
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__asm__ volatile ("outb %0,%1" : : "a" (__val), "dN" (__port));
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}
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static __inline void outw(unsigned short __val, unsigned short __port)
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{
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__asm__ volatile ("outw %0,%1" : : "a" (__val), "dN" (__port));
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}
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static __inline void outl(unsigned int __val, unsigned short __port)
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{
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__asm__ volatile ("outl %0,%1" : : "a" (__val), "dN" (__port));
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}
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static __inline unsigned char inb(unsigned short __port)
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{
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unsigned char __val;
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__asm__ volatile ("inb %1,%0" : "=a" (__val) : "dN" (__port));
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return __val;
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}
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static __inline unsigned short inw(unsigned short __port)
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{
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unsigned short __val;
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__asm__ volatile ("inw %1,%0" : "=a" (__val) : "dN" (__port));
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return __val;
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}
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static __inline unsigned int inl(unsigned short __port)
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{
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unsigned int __val;
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__asm__ volatile ("inl %1,%0" : "=a" (__val) : "dN" (__port));
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return __val;
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}
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static __inline void outsb(unsigned short __port, const void *__buf, unsigned long __n)
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{
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__asm__ volatile ("cld; rep; outsb"
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: "+S" (__buf), "+c" (__n)
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: "d" (__port));
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}
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static __inline void outsw(unsigned short __port, const void *__buf, unsigned long __n)
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{
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__asm__ volatile ("cld; rep; outsw"
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: "+S" (__buf), "+c" (__n)
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: "d" (__port));
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}
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static __inline void outsl(unsigned short __port, const void *__buf, unsigned long __n)
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{
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__asm__ volatile ("cld; rep; outsl"
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: "+S" (__buf), "+c"(__n)
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: "d" (__port));
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}
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static __inline void insb(unsigned short __port, void *__buf, unsigned long __n)
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{
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__asm__ volatile ("cld; rep; insb"
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: "+D" (__buf), "+c" (__n)
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: "d" (__port));
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}
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static __inline void insw(unsigned short __port, void *__buf, unsigned long __n)
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{
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__asm__ volatile ("cld; rep; insw"
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: "+D" (__buf), "+c" (__n)
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: "d" (__port));
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}
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static __inline void insl(unsigned short __port, void *__buf, unsigned long __n)
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{
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__asm__ volatile ("cld; rep; insl"
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: "+D" (__buf), "+c" (__n)
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: "d" (__port));
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}
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