Enrico Fraccaroli (Galfurian)
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
/// @file port_io.c
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/// @brief Byte I/O on ports prototypes.
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/// @copyright (c) 2014-2022 This file is distributed under the MIT License.
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/// See LICENSE.md for details.
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#include "io/port_io.h"
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inline uint8_t inportb(uint16_t port)
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{
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unsigned char data = 0;
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__asm__ __volatile__("inb %%dx, %%al" : "=a"(data) : "d"(port));
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return data;
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}
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inline uint16_t inports(uint16_t port)
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{
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uint16_t rv;
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__asm__ __volatile__("inw %1, %0" : "=a"(rv) : "dN"(port));
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return rv;
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}
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void inportsm(uint16_t port, uint8_t *data, unsigned long size)
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{
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__asm__ __volatile__("rep insw"
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: "+D"(data), "+c"(size)
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: "d"(port)
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: "memory");
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}
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inline uint32_t inportl(uint16_t port)
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{
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uint32_t rv;
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__asm__ __volatile__("inl %%dx, %%eax" : "=a"(rv) : "dN"(port));
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return rv;
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}
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inline void outportb(uint16_t port, uint8_t data)
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{
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__asm__ __volatile__("outb %%al, %%dx" ::"a"(data), "d"(port));
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}
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inline void outports(uint16_t port, uint16_t data)
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{
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__asm__ __volatile__("outw %1, %0" : : "dN"(port), "a"(data));
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}
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void outportsm(uint16_t port, uint8_t *data, uint16_t size)
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{
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asm volatile("rep outsw" : "+S"(data), "+c"(size) : "d"(port));
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}
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inline void outportl(uint16_t port, uint32_t data)
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{
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__asm__ __volatile__("outl %%eax, %%dx" : : "dN"(port), "a"(data));
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}
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