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31
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1
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9
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2 #include "kernel.h"
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3
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29
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4 static void testMalloc()
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20
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5 {
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6 char *a, *b;
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23
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7
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8 printf("Testing malloc\n");
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20
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9 a = kmalloc(100);
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10 printf("Got a at %x\n", a);
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11 a[0] = 'A';
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12 b = kmalloc(22);
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13 printf("Got b at %x\n", b);
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14 b[0] = 'B';
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15 kfree(a);
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16 }
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17
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29
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18 /* This routine initializes the kernel.
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19 * We are left here in 64-bit long mode with the first 6 MB identity mapped.
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20 * */
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9
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21 void kmain()
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22 {
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29
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23 init_screen();
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24 setupIDT();
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25 // init_heap();
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26
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27 // Assume first 16MB:
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28 // TODO: get size from grub
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29 init_memory(0x1000000);
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14
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30
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28
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31 // TODO: make below a user space program!
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23
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32 printf("Welcome!\n");
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9
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33
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34 while (1==1)
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35 {
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36 char buffer[70];
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27
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37 printf(">");
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9
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38 getline(buffer, 70);
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39 // TODO: interpret this line with python :)
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40 printf("\n");
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41 if (buffer[0] == 'x')
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42 {
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43 printf("System time in ms: %d\n", getTimeMS());
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44 }
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23
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45 if (buffer[0] == 't')
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46 {
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47 testMalloc();
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48 }
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9
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49 if ( strncmp(buffer, "help", 4))
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50 {
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51 printf("Help\n Try one of these commands:\n");
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52 printf(" x: print system time in ms\n");
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28
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53 printf(" r: reboot\n");
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54 printf(" t: test\n");
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29
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55 printf(" b: break\n");
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9
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56 }
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24
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57 if (strncmp(buffer, "r", 1))
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58 {
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59 reboot();
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60 }
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29
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61 if (strncmp(buffer, "b", 1))
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62 {
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63 magicBochsBreak();
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64 }
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9
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65 }
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66 }
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67
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68
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