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lib: add: inw, outw

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starnakin 2024-09-10 16:37:01 +02:00
parent 232b19666a
commit 8958b87f65
1 changed files with 12 additions and 0 deletions
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12
libbozo/headers/sys/io.h
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@ -13,3 +13,15 @@ static inline uint8_t inb(uint16_t port)
__asm__ volatile("inb %w1, %b0" : "=a"(ret) : "Nd"(port) : "memory");
return ret;
}
static inline void outw(uint16_t port, uint16_t val)
{
__asm__ volatile("outb %b0, %w1" : : "a"(val), "Nd"(port) : "memory");
}
static inline uint16_t inw(uint16_t port)
{
uint8_t ret;
__asm__ volatile("inb %w1, %b0" : "=a"(ret) : "Nd"(port) : "memory");
return ret;
}