kernel/eka/memmodel/epoc/direct/arm/xsched.cia
author Mike Kinghan <mikek@symbian.org>
Tue, 16 Nov 2010 14:39:21 +0000
branchGCC_SURGE
changeset 303 9b85206a602c
parent 0 a41df078684a
permissions -rw-r--r--
We need a way to pass flags to rombuilds in Raptor via extension flm interfaces, so that the CPP pass of the rom input files can be informed what toolchain we are building with and conditionally include or exclude files depending on whether the toolchain could build them.

// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of the License "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
// e32\memmodel\epoc\direct\arm\xsched.cia
// 
//

#include <e32cia.h>
#include <arm_mem.h>

#define iMState		iWaitLink.iSpare1

#ifdef __SCHEDULER_MACHINE_CODED__

#if defined(_DEBUG)
extern "C" void __DebugMsgRequestComplete(TInt a0, TInt a1, TInt a2);
extern "C" void __DebugMsgReqCompleteWrite(TInt a0, TInt a1, TInt a2);
#endif

__NAKED__ void DThread::RequestComplete(TRequestStatus*& /*aStatus*/, TInt /*aReason*/)
//
// Signal this threads request semaphore.
//
	{
	ASM_DEBUG2(DThreadRequestComplete,r0,lr);

	asm("ldr r3, [r1] ");					// r3 points to TRequestStatus
	asm("mov r12, #0 ");
	asm("str r12, [r1] ");					// aStatus=NULL

	asm(".global _asm_RequestComplete ");
	asm("_asm_RequestComplete: ");

#ifdef BTRACE_REQUESTS
	asm("stmdb sp!,{r0-r3,lr}");
	asm("mov r1,r3");
	asm("mov r3,r2");											// arg3 = aReason
	asm("mov r2,r1");											// arg2 = aStatus
	asm("add r1,r0,#%a0" : : "i" _FOFF(DThread,iNThread));		// arg1 = &this->iNThread
	asm("ldr r0,_threadReqequestCompleteTraceHeader");			// arg0 = header
	asm("bl " CSM_ZN6BTrace4OutXEmmmm);
	asm("ldmia sp!,{r0-r3,lr}");
#endif

	ASM_DEBUG3(RequestComplete,r0,r3,r2);
	asm("ldrb r12, [r0, #%a0]" : : "i" _FOFF(DThread,iMState));
	asm("add r0, r0, #%a0" : : "i" _FOFF(DThread,iNThread));
	asm("cmp r12, #%a0" : : "i" (DThread::EDead));	// test if iMState=EDead
	asm("beq " CSM_ZN5NKern12UnlockSystemEv );		// if it is, finish
	asm("tst r3, #3 ");						// check address aligned
	asm("streq r2, [r3] ");					// if so, write completion code
	asm("moveq r1, #0 ");					// and signal thread
	asm("beq " CSM_ZN5NKern19ThreadRequestSignalEP7NThreadP10NFastMutex );
	asm("b " CSM_ZN5NKern12UnlockSystemEv ); // bad address, just finish.
#ifdef BTRACE_REQUESTS
	asm("_threadReqequestCompleteTraceHeader:");
	asm(".word %a0" : : "i" (BTRACE_HEADER_C(16,BTrace::ERequests,BTrace::ERequestComplete)));
#endif
	}

#endif