Freescale Semiconductor Microcontrollers, Руководство пользователя

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Real Time Kernel Awareness
Application Example
188 Microcontrollers Debugger Manual
Application Example
Listing 5.1 shows an example of a
OSPARAM.PRM
file for SOOM System/REM.
Listing 5.1 OSPARAM.PRM File
{ File OSParam.PRM, implementation for SOOM System/REM }
{ R0..R7 = D0..D7, R8..R15 = A0..A7 }
{ MSG = message displayed in Procedure Chain window }
DL := MD(B+8); { A6 in PD, dynamic link }
SP := MD(B+4); { A7 in PD, stack pointer }
PC := MD(B+14); { PC in PD, program counter }
SR := MW(B+12); { SR in PD, status register }
STATUS := 1000; { Initialized with 1000 }
IF MW(B+18) = 1 THEN
{ IF (registers are saved in task Control Block) THEN }
R0 := MD(B+22); R1 := MD(B+26); R2 := MD(B+30);
R3 := MD(B+34); R4 := MD(B+38); R5 := MD(B+42);
R6 := MD(B+46); R7 := MD(B+50); R8 := MD(B+54);
R9 := MD(B+58); R10 := MD(B+62); R11 := MD(B+66);
R12 := MD(B+70)
END;
R13 := B;
R14 := DL;
R15 := SP;
i := MB(B+112); { i contains the current state of the selected task. }
IF i = 0 THEN MSG := "ReadyInCQSc"
ELSIF i = 1 THEN MSG := "BlockedByAccept"
ELSIF i = 2 THEN MSG := "WaitForDReply"
ELSIF i = 3 THEN MSG := "WaitForMail"
ELSIF i = 4 THEN MSG := "DelayQueue"
ELSIF i = 5 THEN MSG := "BlockedByReceive"
ELSIF i = 6 THEN MSG := "WaitForSemaphore"
ELSIF i = 7 THEN MSG := "Dummy"
ELSIF i = 8 THEN MSG := "SysBlocked"
ELSE MSG := "invalid"
END;