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283
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1 module syscall;
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2
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292
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3 /*
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4 This module handles all the system calls from user space.
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5 */
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6
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301
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7 import arch;
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8 import scheduler;
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9 import process;
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10
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292
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11
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393
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12 /* System call numbers:
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13 */
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301
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14 const int SendMsg = 1;
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15 const int ReceiveMsg = 2;
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16 const int Reboot = 3;
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300
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17
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283
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18
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19 // System call handlers. System calls are made from user space.
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305
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20 function void handle_system_call(int callId, int a, int b)
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292
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21 {
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22 // Main entry, check what to do here
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393
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23 if (callId == SendMsg)
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301
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24 {
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25 handle_send_msg();
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308
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26 var process.process_t* proc;
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27 proc = process.byId(a);
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301
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28 // proc.setMessage();
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29 // scheduler.current.setState(Sleep);
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30 }
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31 else
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292
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32 {
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301
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33 if (callId == 2)
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34 {
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35 handle_recv_msg();
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36 }
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37 else
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38 {
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39 if (callId == 3)
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292
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40 {
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308
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41 //arch.reboot();
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292
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42 }
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301
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43 else
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44 {
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45 return 2;
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46 }
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47 }
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292
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48 }
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49
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301
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50 return 0;
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283
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51 }
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52
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292
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53 // Handle send message syscall
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301
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54 function void handle_send_msg()
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292
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55 {
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56 }
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57
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301
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58 function void handle_recv_msg()
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292
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59 {
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60 // Block until we have a message
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301
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61 //currentProc->setState(Sleep);
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308
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62 //scheduler.executeNext();
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292
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63 }
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64
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