os_task.src

ucOS 模拟环境

          .CPU        300
          .IMPORT     $sp_regsv$3
          .IMPORT     $spregld2$3
          .IMPORT     _OSCPUSaveSR
          .IMPORT     _OSCPURestoreSR
          .IMPORT     _OSIntNesting
          .IMPORT     _OSRunning
          .IMPORT     _OSTCBPrioTbl
          .IMPORT     _OS_Sched
          .IMPORT     _OS_TCBInit
          .IMPORT     _OSTaskStkInit
          .EXPORT     _OSTaskCreate
          .SECTION    P,CODE,ALIGN=2
          .LINE       "E:\Study\ucOS-II\ucOS-II\ucOS kernel\Task\os_task.c",176
_OSTaskCreate:                          ; function: OSTaskCreate
          .STACK      _OSTaskCreate=16
          JSR         @$sp_regsv$3:16
          .LINE       177
          MOV.W       R0,R3
          MOV.W       R1,R2
          .LINE       191
          JSR         @_OSCPUSaveSR:16
          MOV.B       R0L,R6L
          .LINE       192
          MOV.B       @_OSIntNesting:16,R0L
          BEQ         L82
          .LINE       192
          .LINE       193
          MOV.B       R6L,R0L
          JSR         @_OSCPURestoreSR:16
          .LINE       194
          MOV.B       #16,R0L
          JMP         @L83:16
L82:                                     
          .LINE       196
          MOV.B       @(15:16,SP),R5L
          SUB.B       R5H,R5H
          ADD.W       R5,R5
          MOV.W       @(_OSTCBPrioTbl:16,R5),R0
          BNE         L84
          .LINE       196
          .LINE       197
          MOV.W       #1,R0
          MOV.W       R0,@(_OSTCBPrioTbl:16,R5)
          .LINE       199
          MOV.B       R6L,R0L
          JSR         @_OSCPURestoreSR:16
          .LINE       200
          SUB.W       R4,R4
          PUSH.W      R4
          MOV.W       @(14:16,SP),R0
          PUSH.W      R0
          MOV.W       R3,R0
          MOV.W       R2,R1
          JSR         @_OSTaskStkInit:16
          ADDS.W      #2,SP
          ADDS.W      #2,SP
          .LINE       201
          SUB.W       R6,R6
          PUSH.W      R4
          PUSH.W      R6
          MOV.W       @L85+2:16,R1
          PUSH.W      R1
          MOV.W       @L85:16,R1
          PUSH.W      R1
          PUSH.W      R4
          PUSH.W      R6
          MOV.W       R0,R1
          MOV.B       @(27:16,SP),R0L
          JSR         @_OS_TCBInit:16
          MOV.W       #12,R1
          ADD.W       R1,SP
          MOV.B       R0L,R4L
          .LINE       202
          BNE         L86
          .LINE       202
          .LINE       203
          MOV.B       @_OSRunning:16,R0L
          CMP.B       #1,R0L
          BNE         L88
          .LINE       203
          .LINE       204
          JSR         @_OS_Sched:16
          BRA         L88
L86:                                     
          .LINE       206
          .LINE       207
          JSR         @_OSCPUSaveSR:16
          .LINE       208
          MOV.W       R6,@(_OSTCBPrioTbl:16,R5)
          .LINE       209
          JSR         @_OSCPURestoreSR:16
L88:                                     
          .LINE       211
          MOV.B       R4L,R0L
          BRA         L83
L84:                                     
          .LINE       213
          MOV.B       R6L,R0L
          JSR         @_OSCPURestoreSR:16
          .LINE       214
          MOV.B       #40,R0L
          .LINE       215
L83:                                     
          JMP         @$spregld2$3:16
          .SECTION    C,DATA,ALIGN=2
L85:
          .DATA.W     H'0000,H'0000
          .END