author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 09:24:54 +0200 | |
changeset 43 | 96e5fb8b040d |
permissions | -rw-r--r-- |
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// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of the License "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// e32\memmodel\epoc\multiple\arm\xmonitor.cia |
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// Kernel crash debugger - ARM specific portion |
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// |
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// |
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#include <kernel/monitor.h> |
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#include "memmodel.h" |
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#include <mmboot.h> |
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__NAKED__ TInt MapProcess(DMemModelProcess* aProcess, TBool) |
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{ |
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asm("mrc p15, 0, r3, c2, c0, 0 "); // get TTBR0 |
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asm("ldr r2, [r0, #%a0]" : : "i" _FOFF(DMemModelProcess, iLocalPageDir)); |
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asm("and r3, r3, #%a0" : : "i" ((TInt)KTTBRExtraBitsMask)); // r3 = page table cache attributes |
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asm("mcr p15, 0, r2, c7, c10, 4 "); // drain write buffer before changing MMU registers (see ARMv6 specs) |
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asm("orr r2, r2, r3 "); // r2 = new TTBR0 value |
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UPDATE_PW_CACHING_ATTRIBUTES(,r2); // ERRATUM 1136_317041 |
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asm("mcr p15, 0, r2, c2, c0, 0 "); // set TTBR0 - no TLB flush required due to ASID |
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asm("ldr r0, [r0, #%a0]" : : "i" _FOFF(DMemModelProcess, iOsAsid)); |
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asm("mcr p15, 0, r0, c13, c0, 1 "); // set ASID |
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#if defined(__CPU_ARM11MP__) |
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// On other platforms, tha ASID change above has already flushed the branch prediction buffers |
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asm("mcr p15, 0, r0, c7, c5, 6 "); // flush BTAC |
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#endif |
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asm("mov r0, #0"); |
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__JUMP(,lr); |
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} |