diff -r 000000000000 -r bde4ae8d615e os/kernelhwsrv/kernel/eka/memmodel/epoc/multiple/arm/xmonitor.cia --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/os/kernelhwsrv/kernel/eka/memmodel/epoc/multiple/arm/xmonitor.cia Fri Jun 15 03:10:57 2012 +0200 @@ -0,0 +1,43 @@ +// Copyright (c) 2004-2009 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\multiple\arm\xmonitor.cia +// Kernel crash debugger - ARM specific portion +// +// + +#include +#include "memmodel.h" +#include + +__NAKED__ TInt MapProcess(DMemModelProcess* aProcess, TBool) + { + asm("mrc p15, 0, r3, c2, c0, 0 "); // get TTBR0 + asm("ldr r2, [r0, #%a0]" : : "i" _FOFF(DMemModelProcess, iLocalPageDir)); + asm("and r3, r3, #%a0" : : "i" ((TInt)KTTBRExtraBitsMask)); // r3 = page table cache attributes + asm("mcr p15, 0, r2, c7, c10, 4 "); // drain write buffer before changing MMU registers (see ARMv6 specs) + asm("orr r2, r2, r3 "); // r2 = new TTBR0 value + UPDATE_PW_CACHING_ATTRIBUTES(,r2); // ERRATUM 1136_317041 + asm("mcr p15, 0, r2, c2, c0, 0 "); // set TTBR0 - no TLB flush required due to ASID + + asm("ldr r0, [r0, #%a0]" : : "i" _FOFF(DMemModelProcess, iOsAsid)); + asm("mcr p15, 0, r0, c13, c0, 1 "); // set ASID + +#if defined(__CPU_ARM11MP__) + // On other platforms, tha ASID change above has already flushed the branch prediction buffers + asm("mcr p15, 0, r0, c7, c5, 6 "); // flush BTAC +#endif + + asm("mov r0, #0"); + __JUMP(,lr); + }