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1 | $Revision: 434 $ |
1 | $Revision: 465 $ |
2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
3 | ;; ;; |
3 | ;; ;; |
4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
5 | ;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa ;; |
5 | ;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa ;; |
6 | ;; Distributed under terms of the GNU General Public License ;; |
6 | ;; Distributed under terms of the GNU General Public License ;; |
Line 8... | Line 8... | ||
8 | 8 | ||
9 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
9 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
10 | ;; IRQ0 HANDLER (TIMER INTERRUPT) ;; |
10 | ;; IRQ0 HANDLER (TIMER INTERRUPT) ;; |
Line -... | Line 11... | ||
- | 11 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
|
11 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
12 | |
12 | 13 | ||
- | 14 | align 32 |
|
13 | align 32 |
15 | irq0: |
14 | irq0: |
16 | ; pushfd |
15 | save_ring3_context |
17 | pushad |
16 | mov ax, os_data |
18 | mov ax, app_data ; |
Line 17... | Line 19... | ||
17 | mov ds, ax |
19 | mov ds, ax |
Line 18... | Line 20... | ||
18 | mov es, ax |
20 | mov es, ax |
19 | 21 | ||
Line 25... | Line 27... | ||
25 | cmp eax,[next_usage_update] |
27 | cmp eax,[next_usage_update] |
26 | jb .nocounter |
28 | jb .nocounter |
27 | add eax,100 |
29 | add eax,100 |
28 | mov [next_usage_update],eax |
30 | mov [next_usage_update],eax |
29 | call updatecputimes |
31 | call updatecputimes |
30 | .nocounter: |
32 | .nocounter: |
31 | - | ||
32 | cmp [DONT_SWITCH], byte 1 |
33 | cmp [DONT_SWITCH], byte 1 |
33 | jne .change_task |
34 | jne .change_task |
Line 34... | Line 35... | ||
34 | 35 | ||
35 | mov al,0x20 ; send End Of Interrupt signal |
36 | mov al,0x20 ; send End Of Interrupt signal |
36 | mov dx,0x20 |
37 | mov dx,0x20 |
Line 37... | Line 38... | ||
37 | out dx,al |
38 | out dx,al |
Line 38... | Line 39... | ||
38 | 39 | ||
- | 40 | mov [DONT_SWITCH], byte 0 |
|
39 | mov [DONT_SWITCH], byte 0 |
41 | |
Line 40... | Line 42... | ||
40 | 42 | popad |
|
41 | restore_ring3_context |
43 | ; popfd |
Line 42... | Line 44... | ||
42 | iret |
44 | iretd |
43 | 45 | ||
Line 54... | Line 56... | ||
54 | test ecx, ecx ; if there is only one running process |
56 | test ecx, ecx ; if there is only one running process |
55 | jnz .return |
57 | jnz .return |
Line 56... | Line 58... | ||
56 | 58 | ||
Line 57... | Line 59... | ||
57 | call do_change_task |
59 | call do_change_task |
58 | 60 | ||
- | 61 | .return: |
|
59 | .return: |
62 | popad |
Line 60... | Line 63... | ||
60 | restore_ring3_context |
63 | ; popfd |
61 | iret |
64 | iretd |
Line 62... | Line 65... | ||
62 | 65 | ||
63 | 66 | ||
64 | align 4 |
67 | align 4 |
Line 65... | Line 68... | ||
65 | change_task: |
68 | change_task: |
- | 69 | ||
- | 70 | pushfd |
|
- | 71 | cli |
|
66 | 72 | pushad |
|
67 | pushfd |
73 | |
68 | cli |
74 | call update_counters |
69 | pushad |
75 | |
70 | 76 | if 0 |
|
Line 80... | Line 86... | ||
80 | mov [CURRENT_TASK], ebx |
86 | mov [CURRENT_TASK], ebx |
81 | mov [TASK_BASE], edi |
87 | mov [TASK_BASE], edi |
82 | jmp @f |
88 | jmp @f |
83 | .find_next_task: |
89 | .find_next_task: |
84 | ; \end{Mario79} |
90 | ; \end{Mario79} |
- | 91 | ||
- | 92 | end if |
|
- | 93 | ||
85 | call find_next_task |
94 | call find_next_task |
86 | test eax, eax ; the same task -> skip switch |
95 | test eax, eax ; the same task -> skip switch |
87 | jnz .return |
96 | jnz .return |
88 | @@: |
97 | @@: |
89 | mov [DONT_SWITCH],byte 1 |
98 | mov [DONT_SWITCH],byte 1 |
90 | call do_change_task |
99 | call do_change_task |
Line 91... | Line 100... | ||
91 | 100 | ||
92 | .return: |
101 | .return: |
93 | popad |
102 | popad |
94 | popfd |
- | |
95 | 103 | popfd |
|
Line 96... | Line 104... | ||
96 | ret |
104 | ret |
97 | 105 | ||
Line 110... | Line 118... | ||
110 | 118 | ||
111 | 119 | ||
112 | update_counters: |
120 | update_counters: |
113 | mov edi, [TASK_BASE] |
121 | mov edi, [TASK_BASE] |
114 | mov ebx, [edi+TASKDATA.counter_add] ; time stamp counter add |
122 | mov ebx, [edi+TASKDATA.counter_add] ; time stamp counter add |
115 | call _rdtsc |
123 | rdtsc |
116 | sub eax, ebx |
124 | sub eax, ebx |
117 | add eax, [edi+TASKDATA.counter_sum] ; counter sum |
125 | add eax, [edi+TASKDATA.counter_sum] ; counter sum |
Line 128... | Line 136... | ||
128 | find_next_task: |
136 | find_next_task: |
129 | mov ebx, [CURRENT_TASK] |
137 | mov ebx, [CURRENT_TASK] |
130 | mov edi, [TASK_BASE] |
138 | mov edi, [TASK_BASE] |
131 | mov [prev_slot], ebx |
139 | mov [prev_slot], ebx |
Line 132... | Line 140... | ||
132 | 140 | ||
133 | .waiting_for_termination: |
141 | .waiting_for_termination: |
134 | .waiting_for_reuse: |
142 | .waiting_for_reuse: |
135 | .waiting_for_event: |
143 | .waiting_for_event: |
136 | .suspended: |
144 | .suspended: |
137 | cmp ebx, [TASK_COUNT] |
145 | cmp ebx, [TASK_COUNT] |
138 | jb @f |
146 | jb @f |
139 | mov edi, CURRENT_TASK |
147 | mov edi, CURRENT_TASK |
140 | xor ebx, ebx |
148 | xor ebx, ebx |
Line 141... | Line 149... | ||
141 | @@: |
149 | @@: |
142 | 150 | ||
Line 143... | Line 151... | ||
143 | add edi,0x20 |
151 | add edi,0x20 |
Line 157... | Line 165... | ||
157 | cmp al, 9 |
165 | cmp al, 9 |
158 | je .waiting_for_reuse |
166 | je .waiting_for_reuse |
Line 159... | Line 167... | ||
159 | 167 | ||
160 | mov [CURRENT_TASK],ebx |
168 | mov [CURRENT_TASK],ebx |
161 | mov [TASK_BASE],edi |
- | |
162 | push ebx |
- | |
163 | shl ebx, 8 |
- | |
164 | mov ebx, [SLOT_BASE + ebx + APPDATA.pl0_stack] |
- | |
165 | add ebx, RING0_STACK_SIZE |
- | |
166 | mov [CURRENT_RING0_ESP], ebx |
- | |
Line 167... | Line 169... | ||
167 | pop ebx |
169 | mov [TASK_BASE],edi |
168 | 170 | ||
169 | cmp al, 5 |
171 | cmp al, 5 |
170 | jne .noevents |
172 | jne .noevents |
171 | call get_event_for_app |
173 | call get_event_for_app |
172 | test eax, eax |
174 | test eax, eax |
173 | jz .waiting_for_event |
175 | jz .waiting_for_event |
174 | mov [event_sched], eax |
176 | mov [event_sched], eax |
175 | mov [edi+TASKDATA.state], byte 0 |
177 | mov [edi+TASKDATA.state], byte 0 |
176 | .noevents: |
178 | .noevents: |
177 | .found: |
179 | .found: |
178 | mov [CURRENT_TASK],ebx |
180 | mov [CURRENT_TASK],ebx |
179 | mov [TASK_BASE],edi |
181 | mov [TASK_BASE],edi |
Line -... | Line 182... | ||
- | 182 | rdtsc ;call _rdtsc |
|
180 | call _rdtsc |
183 | mov [edi+TASKDATA.counter_add],eax |
181 | mov [edi+TASKDATA.counter_add],eax |
184 | |
182 | 185 | mov esi, [prev_slot] |
|
183 | xor eax, eax |
186 | xor eax, eax |
Line -... | Line 187... | ||
- | 187 | cmp ebx, esi |
|
184 | cmp ebx, [prev_slot] |
188 | sete al |
- | 189 | ret |
|
- | 190 | ||
185 | sete al |
191 | ; param |
186 | ret |
- | |
187 | - | ||
188 | ; in: ebx = TSS selector index |
- | |
189 | do_change_task: |
- | |
190 | shl ebx, 3 |
- | |
191 | xor eax, eax |
- | |
192 | add ebx, tss0 |
- | |
193 | mov [far_jump.sel], bx ; selector |
- | |
Line -... | Line 192... | ||
- | 192 | ; ebx = incoming task |
|
- | 193 | ; esi = outcomig task |
|
- | 194 | ||
- | 195 | do_change_task: |
|
- | 196 | ||
- | 197 | shl ebx, 8 |
|
- | 198 | add ebx, SLOT_BASE |
|
- | 199 | mov [current_slot], ebx |
|
- | 200 | ||
- | 201 | shl esi, 8 |
|
- | 202 | add esi, SLOT_BASE |
|
- | 203 | ||
- | 204 | mov [esi+APPDATA.saved_esp], esp |
|
- | 205 | mov esp, [ebx+APPDATA.saved_esp] |
|
- | 206 | ||
- | 207 | ; set thread io map |
|
- | 208 | ||
- | 209 | mov ecx, [ebx+APPDATA.io_map] |
|
- | 210 | mov edx, [ebx+APPDATA.io_map+4] |
|
- | 211 | mov dword [page_tabs+((tss._io_map_0 and -4096) shr 10)], ecx |
|
- | 212 | mov dword [page_tabs+((tss._io_map_1 and -4096) shr 10)], edx |
|
- | 213 | ||
- | 214 | mov eax, [ebx+APPDATA.dir_table] |
|
- | 215 | mov cr3, eax |
|
- | 216 | mov ebx, [ebx+APPDATA.pl0_stack] |
|
- | 217 | add ebx, RING0_STACK_SIZE |
|
Line -... | Line 218... | ||
- | 218 | mov [tss._esp0], ebx |
|
- | 219 | mov ecx, cr0 |
|
- | 220 | or ecx, CR0_TS ;set task switch flag |
|
- | 221 | mov cr0, ecx |
|
- | 222 | inc [context_counter] ;noname & halyavin |
|
- | 223 | ||
- | 224 | test [ebx+APPDATA.dbg_state], 1 |
|
- | 225 | jnz @F |
|
- | 226 | ret |
|
- | 227 | @@: |
|
- | 228 | mov eax, [ebx+APPDATA.dbg_regs.dr0] |
|
- | 229 | mov dr0, eax |
|
- | 230 | mov eax, [ebx+APPDATA.dbg_regs.dr1] |
|
- | 231 | mov dr1, eax |
|
- | 232 | mov eax, [ebx+APPDATA.dbg_regs.dr2] |
|
- | 233 | mov dr2, eax |
|
- | 234 | mov eax, [ebx+APPDATA.dbg_regs.dr3] |
|
Line 194... | Line 235... | ||
194 | mov [far_jump.offs], eax ; offset |
235 | mov dr3, eax |
195 | jmp pword [far_jump] |
236 | xor eax, eax |
Line 196... | Line 237... | ||
196 | inc [context_counter] ;noname & halyavin |
237 | mov dr6, eax |
197 | ret |
238 | mov eax, [ebx+APPDATA.dbg_regs.dr7] |
198 | 239 | mov dr7, eax |
|
199 | 240 | ret |
|
200 | 241 | ||
201 | align 4 |
242 | align 4 |
202 | updatecputimes: |
243 | updatecputimes: |
203 | 244 | ||
204 | mov eax,[idleuse] |
245 | mov eax,[idleuse] |
205 | mov [idleusesec],eax |
246 | mov [idleusesec],eax |
206 | mov [idleuse],dword 0 |
247 | mov [idleuse],dword 0 |
207 | mov ecx, [TASK_COUNT] |
248 | mov ecx, [TASK_COUNT] |
Line 208... | Line 249... | ||
208 | mov edi, TASK_DATA |
249 | mov edi, TASK_DATA |
- | 250 | .newupdate: |
|
- | 251 | mov ebx,[edi+TASKDATA.counter_sum] |
|
- | 252 | mov [edi+TASKDATA.cpu_usage],ebx |
|
- | 253 | mov [edi+TASKDATA.counter_sum],dword 0 |
|
- | 254 | add edi,0x20 |
|
- | 255 | dec ecx |
|
- | 256 | jnz .newupdate |
|
- | 257 | ||
- | 258 | ret |
|
- | 259 | ||
- | 260 | if 0 |
|
- | 261 | ||
- | 262 | ||
- | 263 | struc TIMER |
|
- | 264 | { |
|
- | 265 | .next dd ? |
|
- | 266 | .exp_time dd ? |
|
- | 267 | .func dd ? |
|
- | 268 | .arg dd ? |
|
- | 269 | } |
|
- | 270 | ||
- | 271 | ||
- | 272 | ||
- | 273 | ||
- | 274 | ||
- | 275 | ||
- | 276 | ||
- | 277 | ||
- | 278 | ||
- | 279 | MAX_PROIRITY 0 ; highest, used for kernel tasks |
|
- | 280 | MAX_USER_PRIORITY 0 ; highest priority for user processes |
|
- | 281 | USER_PRIORITY 7 ; default (should correspond to nice 0) |
|
- | 282 | MIN_USER_PRIORITY 14 ; minimum priority for user processes |
|
- | 283 | IDLE_PRIORITY 15 ; lowest, only IDLE process goes here |
|
- | 284 | NR_SCHED_QUEUES 16 ; MUST equal IDLE_PRIORYTY + 1 |
|
- | 285 | ||
- | 286 | rdy_head rd 16 |
|
- | 287 | ||
- | 288 | ||
- | 289 | align 4 |
|
- | 290 | pick_task: |
|
- | 291 | ||
- | 292 | xor eax, eax |
|
- | 293 | .pick: |
|
- | 294 | mov ebx, [rdy_head+eax*4] |
|
- | 295 | test ebx, ebx |
|
- | 296 | jz .next |
|
- | 297 | ||
- | 298 | mov [next_task], ebx |
|
- | 299 | test [ebx+flags.billable] |
|
- | 300 | jz @F |
|
- | 301 | mov [bill_task], ebx |
|
- | 302 | @@: |
|
- | 303 | ret |
|
- | 304 | .next: |
|
- | 305 | inc eax |
|
- | 306 | jmp .pick |
|
- | 307 | ||
- | 308 | ||
- | 309 | ; param |
|
- | 310 | ; eax= task |
|
- | 311 | ; |
|
- | 312 | ; retval |
|
- | 313 | ; eax= task |
|
- | 314 | ; ebx= queue |
|
- | 315 | ; ecx= front if 1 or back if 0 |
|
- | 316 | ||
- | 317 | align 4 |
|
- | 318 | shed: |
|
- | 319 | cmp [eax+.tics_left], 0 ;signed compare |
|
- | 320 | mov ebx, [eax+.priority] |
|
- | 321 | setg ecx |
|
- | 322 | jg @F |
|
- | 323 | ||
- | 324 | mov edx, [eax+.tics_quantum] |
|
- | 325 | mov [eax+.ticks_left], edx |
|
- | 326 | cmp ebx, (IDLE_PRIORITY-1) |
|
- | 327 | je @F |
|
- | 328 | inc ebx |
|
- | 329 | @@: |
|
- | 330 | ret |
|
- | 331 | ||
- | 332 | ; param |
|
- | 333 | ; eax= task |
|
- | 334 | ||
- | 335 | align 4 |
|
- | 336 | enqueue: |
|
- | 337 | call shed ;eax |
|
- | 338 | cmp [rdy_head+ebx*4],0 |
|
- | 339 | jnz @F |
|
- | 340 | ||
- | 341 | mov [rdy_head+ebx*4], eax |
|
- | 342 | mov [rdy_tail+ebx*4], eax |
|
- | 343 | mov [eax+.next_ready], 0 |
|
- | 344 | jmp .pick |
|
- | 345 | @@: |
|
- | 346 | test ecx, ecx |
|
- | 347 | jz .back |
|
- | 348 | ||
- | 349 | mov ecx, [rdy_head+ebx*4] |
|
- | 350 | mov [eax+.next_ready], ecx |
|
- | 351 | mov [rdy_head+ebx*4], eax |
|
- | 352 | jmp .pick |
|
- | 353 | .back: |
|
- | 354 | mov ecx, [rdy_tail+ebx*4] |