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#include <stdint.h>
extern void outsw(uint16_t, uint32_t);
extern void outb(uint16_t, uint8_t);
extern void outw(uint16_t, uint16_t);
extern void outl(uint16_t, uint32_t);
extern uint32_t inl(uint16_t);
extern uint16_t inw(uint16_t);
extern uint16_t inb(uint16_t);
extern void rep_outsw(uint16_t count, uint16_t port, volatile void *addy);
__attribute__((no_caller_saved_registers)) extern void
rep_insw(uint16_t count, uint16_t port, volatile void *addy);
extern void jump_usermode(void (*address)(), uint32_t stack_pointer);
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