#ifndef ASM_H
#define ASM_H

#include <cstdint>

static inline uint8_t inb(uint16_t port) {
	uint8_t value;
	asm volatile ("inb %1, %0" : "=a"(value) : "Nd"(port));
	return value;
}

static inline uint16_t inw(uint16_t port) {
	uint16_t value;
	asm volatile ("inw %1, %0" : "=a"(value) : "Nd"(port));
	return value;
}

static inline uint32_t inl(uint16_t port) {
	uint32_t value;
	asm volatile ("inl %1, %0" : "=a"(value) : "Nd"(port));
	return value;
}

static inline void outb(uint16_t port, uint8_t value) {
	asm volatile ("outb %0, %1" : : "a"(value), "Nd"(port));
}

static inline void outw(uint16_t port, uint16_t value) {
	asm volatile ("outw %0, %1" : : "a"(value), "Nd"(port));
}

static inline void outl(uint16_t port, uint32_t value) {
	asm volatile ("outl %0, %1" : : "a"(value), "Nd"(port));
}

static inline void enableInterrupts() {
	asm volatile ("sti": : :"memory");
}

static inline void disableInterrupts() {
	asm volatile ("cli": : :"memory");
}

static inline uint32_t eflags() {
	uint32_t value;
	asm volatile ( "pushf\n\t"
				   "popl %0"
	: "=g"(value));
	return value;
}

static inline bool interruptsEnabled() {
	return (eflags() & (1u << 9u)) != 0;
}

static void pmInterruptCall(unsigned short selector, unsigned long offset) {
    __asm__ __volatile__ (
		"pushf\n"				  // Push EFLAGS
        "mov %0, %%ax\n"          // Load the segment selector into AX
        "mov %%ax, %%ds\n"        // Move it to DS (or another segment register)
        "call *%1\n"              // Perform the indirect far call using the offset
        : // No output operands
        : "r" (selector), "r" (offset) // Input operands
        : "%ax"                   // Clobbered register
    );
}

#endif