--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/debug/d_debugapi.cia Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,67 @@
+// Copyright (c) 2005-2009 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:
+// e32test\debug\d_debugapi.cia
+//
+//
+
+#include <arm.h>
+#include "d_debugapi.h"
+
+__NAKED__ TInt DDebugAPIChecker::ReadFromOtherProcessArmv6()
+ {
+
+ //Save regs.
+ asm("stmfd sp!,{r4-r7,lr}");
+
+ //Copy all data we need into regs. We can not access the memory of ...
+ //...the current process once we start changing MMU content.
+ asm("ldr r1, [r0, #%a0]" : : "i" _FOFF(DDebugAPIChecker, iOtherProcess_OsAsid));
+ asm("ldr r2, [r0, #%a0]" : : "i" _FOFF(DDebugAPIChecker, iOtherProcess_LocalPageDir));
+ asm("ldr r3, [r0, #%a0]" : : "i" _FOFF(DDebugAPIChecker, iCurrentProcess_OsAsid));
+ asm("ldr r4, [r0, #%a0]" : : "i" _FOFF(DDebugAPIChecker, iCurrentProcess_LocalPageDir));
+ asm("ldr r5, [r0, #%a0]" : : "i" _FOFF(DDebugAPIChecker, iAddress));
+
+ asm("mrc p15, 0, r6, c2, c0, 0 ");
+ asm("and r6, r6, #0x7f "); // r6 = page table cache/sharing attributes
+ asm("orr r2, r2, r6 "); // add in to other process page directory address
+ asm("orr r4, r4, r6 "); // add in to this process page directory address
+ asm("mov r6, #0 ");
+
+ //Disable interrupts
+ asm("mov r7, #0xd3 ");
+ asm("msr cpsr, r7 ");
+
+ //Switch MMU to the-other-process
+ asm("mcr p15, 0, r6, c7, c10, 4 "); // drain write buffer before changing MMU registers (see ARMv6 specs)
+//! asm("orr r2, r2 #0x18"); //Uncomment this line on 1136 (r0p2) with L2 cache due to Erratum 317041.
+ asm("mcr p15, 0, r2, c2, c0, 0 "); // set TTBR0 - no TLB flush required due to ASID
+ asm("mcr p15, 0, r1, c13, c0, 1 "); // set ASID
+
+ //Read the memory from the-other-process
+ asm("ldr r0, [r5]");
+
+ //Switch MMU back to the-current-process
+ asm("mcr p15, 0, r6, c7, c10, 4 "); // drain write buffer before changing MMU registers (see ARMv6 specs)
+//! asm("orr r4, r4 #0x18"); //Uncomment this line on 1136 (r0p2) with L2 cache due to Erratum 317041.
+ asm("mcr p15, 0, r4, c2, c0, 0 "); // set TTBR0 - no TLB flush required due to ASID
+ asm("mcr p15, 0, r3, c13, c0, 1 "); // set ASID
+
+
+ //Re-enable interrupts
+ asm("mov r7, #0x13 ");
+ asm("msr cpsr, r7 ");
+
+ //Return
+ asm("ldmfd sp!,{r4-r7,pc}");
+ }