mirror of
https://github.com/tailix/libkernaux.git
synced 2024-10-30 11:54:01 -04:00
76 lines
2 KiB
C
76 lines
2 KiB
C
#ifndef KERNAUX_INCLUDED_ARCH_X86
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#define KERNAUX_INCLUDED_ARCH_X86 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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inline static unsigned char kernaux_arch_x86_inportb(unsigned short port);
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inline static unsigned short kernaux_arch_x86_inportw(unsigned short port);
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inline static unsigned int kernaux_arch_x86_inportd(unsigned short port);
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inline static void
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kernaux_arch_x86_outportb(unsigned short port, unsigned char value);
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inline static void
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kernaux_arch_x86_outportw(unsigned short port, unsigned short value);
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inline static void
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kernaux_arch_x86_outportd(unsigned short port, unsigned int value);
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void kernaux_arch_x86_hang() __attribute__((noreturn));
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unsigned long kernaux_arch_x86_read_cr0();
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unsigned long kernaux_arch_x86_read_cr4();
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void kernaux_arch_x86_write_cr0(volatile unsigned long value);
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void kernaux_arch_x86_write_cr3(volatile unsigned long value);
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void kernaux_arch_x86_write_cr4(volatile unsigned long value);
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unsigned char kernaux_arch_x86_inportb(const unsigned short port)
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{
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register unsigned char result;
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__asm__ volatile("inb %1, %0" : "=a" (result) : "dN" (port));
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return result;
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}
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unsigned short kernaux_arch_x86_inportw(const unsigned short port)
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{
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register unsigned short result;
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__asm__ volatile("inw %1, %0" : "=a" (result) : "dN" (port));
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return result;
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}
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unsigned int kernaux_arch_x86_inportd(const unsigned short port)
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{
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register unsigned int result;
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__asm__ volatile("ind %1, %0" : "=a" (result) : "dN" (port));
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return result;
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}
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void kernaux_arch_x86_outportb(
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const unsigned short port,
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const unsigned char value
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) {
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__asm__ volatile("outb %1, %0" : : "dN" (port), "a" (value));
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}
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void kernaux_arch_x86_outportw(
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const unsigned short port,
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const unsigned short value
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) {
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__asm__ volatile("outw %1, %0" : : "dN" (port), "a" (value));
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}
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void kernaux_arch_x86_outportd(
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const unsigned short port,
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const unsigned int value
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) {
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__asm__ volatile("outd %1, %0" : : "dN" (port), "a" (value));
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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