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annotate cos/kernel/asmcode.asm @ 25:d3c4bf3720a3

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Beginning of multitasking
author windel
date Tue, 27 Dec 2011 13:31:38 +0100
parents 66e9c332c845
children 47b7df514243
rev   line source
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1 ; The default interrupt handlers.
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2 ; from 20 - 31 are reserved vectors.
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3 ; below are the custom ones!
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4
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5 section .text
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6 align 4
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7
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8 global halt
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9 halt:
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10 cli
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11 hlt
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12
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13 ; Function to read the current instruction pointer value:
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14 global read_rip
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15 read_rip:
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16 pop rax
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17 jmp rax
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18
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19 global magicBochsBreak
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20 magicBochsBreak:
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21 xchg bx, bx
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22 ret
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23
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24 global loadIDT
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25 loadIDT:
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26 extern idtP
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27 ; TODO: make this pointer thing more insightfull:
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28 ;xchg bx, bx ; For debugging with bochs
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29 lidt [idtP]
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30 ret
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31
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32 %macro pushAll 0
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33 push rax
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34 push rcx
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35 push rdx
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36 push rbx
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37 push rbp
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38 push rsi
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39 push rdi
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40 %endmacro
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41
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42 %macro popAll 0
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43 pop rdi
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44 pop rsi
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45 pop rbp
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46 pop rbx
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47 pop rdx
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48 pop rcx
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49 pop rax
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50 %endmacro
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51
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52 ; Define macro with two arguments:
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53 %macro INTX 2
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54 global %1
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55 %1:
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56 ; Do some saving:
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57 cli
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58 pushAll
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59 ;xchg bx,bx
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60
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61 extern %2
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62 call %2
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63 ; Do restoration
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64 popAll
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65 ;xchg bx, bx
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66 sti
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67 iretq
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68
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69 %endmacro
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70
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71 ; Exception handlers:
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72 INTX INTDEF, INTDEF_handler
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73 INTX INT0, INT0handler
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74 INTX INT1, INT1handler
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75 INTX INT2, INT2handler
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76 INTX INT3, INT3handler
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77 INTX INT4, INT4handler
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78 INTX INT5, INT5handler
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79 INTX INT6, INT6handler
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80 INTX INT7, INT7handler
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81 INTX INT8, INT8handler
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82 INTX INT9, INT9handler
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83 INTX INT10, INT10handler
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84 INTX INT11, INT11handler
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85 INTX INT12, INT12handler
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86 INTX INT13, INT13handler
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87 INTX INT14, INT14handler
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88 INTX INT15, INT15handler
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89 INTX INT16, INT16handler
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90 INTX INT17, INT17handler
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91 INTX INT18, INT18handler
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92 INTX INT19, INT19handler
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93
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94 INTX INT32, INT32handler
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95 INTX INT33, INT33handler
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96 INTX INT34, INT34handler
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97