hal.h

#ifndef _HAL_H
#define _HAL_H
 
 
// HAL stands for Hardware Abstraction Layer.
// This is a way for our OS to interact with hardware without having to know
// any specific details of the hardware.
 
#include <stdint.h>
#include "limine.h"
 
int hal_init(void);
 
struct limine_framebuffer* hal_get_fb(void);
 
 
static inline void hal_putpixel(struct limine_framebuffer *fb, uint32_t x, uint32_t y, uint32_t color) {
    uint32_t *pixel = (uint32_t *)
        ((uint8_t *)fb->address + y * fb->pitch + x * 4);
 
    *pixel = color;
}
 
static inline void hal_fillrect(
                struct limine_framebuffer *fb, uint32_t x, uint32_t y, uint32_t w, uint32_t h, uint32_t color) {
 
        uint8_t* where = fb->address + (y * fb->pitch) + (x * 4);
 
        for (uint32_t j = 0; j < h; j++) {
                for (uint32_t i = 0; i < w; i++) {
                        *(uint32_t*)(where + i*4 + j*fb->pitch) = color;
                }
        }
}
 
static inline uint64_t hal_fb_width() {
        return hal_get_fb()->width;
}
 
static inline uint64_t hal_fb_height() {
        return hal_get_fb()->height;
}
 
#endif