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uC/OSII移植步驟
作者：
時(shí)間：2016-10-08
來(lái)源：網(wǎng)絡(luò )
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; OSTCBCur= OSTCBHighRdy;
LDRR6,OS_TCBHighRdy
LDRR6,[R6]
STRR6,[R4]
LDRSP,[R6]; SP = OSTCBHighRdy->OSTCBStkPtr;
; RESTORE NEW TASK'S CONTEXT
LDMFDSP!, {R4}; Pop new task's CPSR
MSRSPSR_cxsf, R4
LDMFDSP!, {R0-R12,LR,PC}^; Pop new task's context
②兩種形式的中斷程序
OS_CPU_IRQ_ISR
STMFDSP!, {R1-R3}; PUSH WORKING REGISTERS ONTO IRQ STACK
MOVR1, SP; SaveIRQ stack pointer
ADD
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