mirror of
https://github.com/limine-bootloader/limine
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60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
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#ifndef __CIO_H__
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#define __CIO_H__
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#include <stdint.h>
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#define port_out_b(port, value) ({ \
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asm volatile ( "out dx, al" \
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: \
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: "a" (value), "d" (port) \
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: ); \
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})
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#define port_out_w(port, value) ({ \
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asm volatile ( "out dx, ax" \
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: \
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: "a" (value), "d" (port) \
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: ); \
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})
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#define port_out_d(port, value) ({ \
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asm volatile ( "out dx, eax" \
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: \
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: "a" (value), "d" (port) \
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: ); \
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})
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#define port_in_b(port) ({ \
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uint8_t value; \
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asm volatile ( "in al, dx" \
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: "=a" (value) \
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: "d" (port) \
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: ); \
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value; \
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})
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#define port_in_w(port) ({ \
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uint16_t value; \
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asm volatile ( "in ax, dx" \
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: "=a" (value) \
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: "d" (port) \
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: ); \
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value; \
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})
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#define port_in_d(port) ({ \
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uint32_t value; \
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asm volatile ( "in eax, dx" \
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: "=a" (value) \
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: "d" (port) \
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: ); \
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value; \
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})
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#define io_wait() ({ port_out_b(0x80, 0x00); })
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#define disable_interrupts() ({ asm volatile ("cli"); })
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#define enable_interrupts() ({ asm volatile ("sti"); })
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#endif
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