Nigel
0f0fc9f252
Moved the PMM away from being object orientated as it is just plain annoying renamed src folder to source Set timeout to 5 seconds in the grub config
44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
#pragma once
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#include <stdint.h>
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static inline uint8_t inb(uint16_t port)
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{
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uint8_t ret;
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asm volatile ( "inb %1, %0"
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: "=a"(ret)
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: "Nd"(port) );
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return ret;
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}
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unsigned char inb_p(unsigned short port);
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unsigned short inw(unsigned short port);
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unsigned short inw_p(unsigned short port);
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unsigned int inl(unsigned short port);
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unsigned int inl_p(unsigned short port);
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static inline void outb(uint16_t port, uint8_t val)
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{
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asm volatile ( "outb %0, %1" : : "a"(val), "Nd"(port) );
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/* There's an outb %al, $imm8 encoding, for compile-time constant port numbers that fit in 8b. (N constraint).
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* Wider immediate constants would be truncated at assemble-time (e.g. "i" constraint).
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* The outb %al, %dx encoding is the only option for all other cases.
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* %1 expands to %dx because port is a uint16_t. %w1 could be used if we had the port number a wider C type */
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}
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void outb_p(unsigned char value, unsigned short port);
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void outw(unsigned short value, unsigned short port);
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void outw_p(unsigned short value, unsigned short port);
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void outl(unsigned int value, unsigned short port);
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void outl_p(unsigned int value, unsigned short port);
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void insb(unsigned short port, void *addr,
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unsigned long count);
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void insw(unsigned short port, void *addr,
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unsigned long count);
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void insl(unsigned short port, void *addr,
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unsigned long count);
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void outsb(unsigned short port, const void *addr,
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unsigned long count);
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void outsw(unsigned short port, const void *addr,
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unsigned long count);
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void outsl(unsigned short port, const void *addr,
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unsigned long count);
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void io_wait(); |