| Language: |
|
| Pastebin: | 90529 |
| Author: | asd |
| Subject: | Untitled |
| Created: | 2008-07-02 16:30:26 |
Download and save
Toggle line numbers
| 1 | cli;
| | 2 | jmp thread_init;
| | 3 |
| | 4 | //== Thread parameters ========================================================
| | 5 | alloc thread1_esp;
| | 6 | alloc thread2_esp;
| | 7 |
| | 8 | interrupt_table:
| | 9 | alloc 512;
| | 10 |
| | 11 | alloc curthread;
| | 12 | //=============================================================================
| | 13 |
| | 14 | //=============================================================================
| | 15 | // Thread switcher interrupt
| | 16 | //=============================================================================
| | 17 | thread_switch:
| | 18 | cli;
| | 19 | //Switch to what task?
| | 20 | cmp #curthread,0;
| | 21 | jne switch_to1;
| | 22 | je switch_to2;
| | 23 |
| | 24 | switch_return:
| | 25 | sti;
| | 26 | nmiret;
| | 27 |
| | 28 | switch_to1:
| | 29 | //switch to thread1 stack
| | 30 | mov ss,thread1_stack;
| | 31 |
| | 32 | mov #thread2_esp,esp;
| | 33 | mov esp,#thread1_esp;
| | 34 |
| | 35 | mov #curthread,0;
| | 36 |
| | 37 | jmp switch_return;
| | 38 |
| | 39 | switch_to2:
| | 40 | //switch to thread2 stack
| | 41 | mov ss,thread2_stack;
| | 42 |
| | 43 | mov #thread1_esp,esp;
| | 44 | mov esp,#thread2_esp;
| | 45 |
| | 46 | mov #curthread,1;
| | 47 |
| | 48 | jmp switch_return;
| | 49 | //=============================================================================
| | 50 |
| | 51 |
| | 52 | //=============================================================================
| | 53 | // Thread initialization
| | 54 | //=============================================================================
| | 55 | thread_init:
| | 56 | //Setup interrupt handler
| | 57 | lidtr interrupt_table;
| | 58 | mov edi,interrupt_table;
| | 59 | add edi,64; //INT 32;
| | 60 | mov #edi,thread_switch;
| | 61 | inc edi;
| | 62 | mov #edi,32;
| | 63 |
| | 64 | stp;
| | 65 |
| | 66 | //Setup stack
| | 67 | mov #thread1_esp,2047;
| | 68 | mov #thread2_esp,2047;
| | 69 |
| | 70 | //Setup thread switcher
| | 71 | mov #curthread,0;
| | 72 |
| | 73 | //Initialize task 2 NMI return stuff
| | 74 | mov ss,thread2_stack;
| | 75 | mov esp,#thread2_esp;
| | 76 | push es;
| | 77 | push gs;
| | 78 | push fs;
| | 79 | push ds;
| | 80 | push ss;
| | 81 | push cs;
| | 82 |
| | 83 | push edi;
| | 84 | push esi;
| | 85 | push esp;
| | 86 | push ebp;
| | 87 | push edx;
| | 88 | push ecx;
| | 89 | push ebx;
| | 90 | push eax;
| | 91 |
| | 92 | push 0; //CMPR
| | 93 | push thread2; //ENTRYPOINT
| | 94 |
| | 95 | push 0;
| | 96 | push 0;
| | 97 |
| | 98 | mov #thread2_esp,esp;
| | 99 |
| | 100 |
| | 101 |
| | 102 | //Initialize task 1 NMI return stuff
| | 103 | mov ss,thread1_stack;
| | 104 | mov esp,#thread1_esp;
| | 105 | push es;
| | 106 | push gs;
| | 107 | push fs;
| | 108 | push ds;
| | 109 | push ss;
| | 110 | push cs;
| | 111 |
| | 112 | push edi;
| | 113 | push esi;
| | 114 | push esp;
| | 115 | push ebp;
| | 116 | push edx;
| | 117 | push ecx;
| | 118 | push ebx;
| | 119 | push eax;
| | 120 |
| | 121 | push 0; //CMPR
| | 122 | push thread1; //ENTRYPOINT
| | 123 |
| | 124 | push 0;
| | 125 | push 0;
| | 126 |
| | 127 | mov #thread1_esp,esp;
| | 128 |
| | 129 | //Start task 1
| | 130 | sti;
| | 131 | nmiret;
| | 132 | //=============================================================================
| | 133 |
| | 134 | //4KB per thread
| | 135 | //2KB code
| | 136 | //2KB stack
| | 137 |
| | 138 | //== Thread 1 =================================================================
| | 139 | ORG 4096;
| | 140 | thread1:
| | 141 |
| | 142 | mov eax,0;
| | 143 | thread1_loop:
| | 144 | add eax,1;
| | 145 | mov port0,eax;
| | 146 | jmp thread1_loop;
| | 147 |
| | 148 | ORG 6144;
| | 149 | thread1_stack:
| | 150 | //=============================================================================
| | 151 |
| | 152 |
| | 153 |
| | 154 | //== Thread 2 =================================================================
| | 155 | ORG 8192;
| | 156 | thread2:
| | 157 |
| | 158 | mov eax,0;
| | 159 | thread2_loop:
| | 160 | add eax,1;
| | 161 | mov port1,eax;
| | 162 | // nmiint 32; //This makes task IDLE until next task switch!
| | 163 | jmp thread2_loop;
| | 164 |
| | 165 | ORG 10240;
| | 166 | thread2_stack:
| | 167 | //=============================================================================
|
Download and save
Toggle line numbers
|
| Thread: |
|
Tip: Click the line numbers to toggle highliting on that line.
Note: You can prefix a line with "@@@" to highlight it.