src/kernel/main.c


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/*
 *    müll_kernel
 */

// C includes
#include <stddef.h>

// external includes
#include "headers/limine.h"

// limine things
__attribute__((used, section(".limine_requests_start")))
static volatile uint64_t limine_requests_start_marker[] = LIMINE_REQUESTS_START_MARKER;

__attribute__((used, section(".limine_requests")))
static volatile uint64_t limine_base_revision[] = LIMINE_BASE_REVISION(3);

__attribute__((used, section(".limine_requests")))
static volatile struct limine_framebuffer_request framebuffer_request = {
    .id = LIMINE_FRAMEBUFFER_REQUEST_ID,
    .revision = 0
};

__attribute__((used, section(".limine_requests_end")))
static volatile uint64_t limine_requests_end_marker[] = LIMINE_REQUESTS_END_MARKER;

// API includes
#include "api/io.h"

void kmain(void) __attribute__((noreturn));
void _start(void) {
    if (!framebuffer_request.response) {
        for (;;) __asm__("hlt");
    }

    struct limine_framebuffer *fb =
        framebuffer_request.response->framebuffers[0];

    uint32_t *pix = fb->address;
    pix[0] = 0x00FFFFFF;                        // white pixel

    //return kernel_main();
    for (;;) __asm__("hlt");
}