57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
#include <stdio.h>
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#include <rockos/tty.h>
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#include <rockos/keyboard.h>
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#include <rockos/pic.h>
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#include <rockos/hal.h>
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#include <rockos/timer.h>
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#include <rockos/paging.h>
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void kernel_main(void) {
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printf("Hello, kernel World!\n");
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printf("String test: %s\n", "HELLOOOOO");
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printf("Float test: %.10f\n", 0.123456789);
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printf("Int test: %d\n", 747474);
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printf("Hex test: 0x%x\n", 0xDEADBEEF);
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printf("And now for 0.1 + 0.2...... which is: %.17f\n", 0.1 + 0.2);
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initialize_keyset();
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outb(0x70, 0x0); // Seconds
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uint8_t sec = inb(0x71);
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outb(0x70, 0x02); // Minutes
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uint8_t min = inb(0x71);
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outb(0x70, 0x04); // Hours
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uint8_t hour = inb(0x71);
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// BCD to binary conversion
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sec = (sec & 0x0F) + ((sec / 16) * 10);
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min = (min & 0x0F) + ((min / 16) * 10);
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hour = ((hour & 0x0F) + (((hour & 0x70) / 16) * 10)) | (hour & 0x80);
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printf("Time: %02d:%02d:%02d UTC+3\n", (hour + 3) % 24, min, sec);
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uint32_t first = get_used_memsize();
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uint32_t limit = 1024 * 8;
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uint32_t* pages[limit];
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for(uint32_t i = 0; i < limit; i++) {
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pages[i] = get_page();
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}
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uint32_t middle = get_used_memsize();
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for(uint32_t i = 0; i < limit; i++) {
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set_page_free(pages[i]);
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}
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uint32_t last = get_used_memsize();
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printf("Before Allocation: %d KiB\nAfter allocation: %d KiB\nAfter Clear: %d KiB\n", first, middle, last);
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printf("Finished!\n");
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unsigned char key;
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for(;;) {
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key = readkey();
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if(key)
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putchar(key);
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}
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asm("cli; hlt");
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}
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