miniGUI work-a-round - undef SYMBIAN_EXCLUDE_KEYMAP
(transplanted from 7784dbee21651f71d35a0dd8588109ab32eb9685)
/*
* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "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:
* naviengine_assp\interrupts.cia
*
*/
#include <naviengine_priv.h>
#ifndef __SMP__
__NAKED__ void NaviEngineInterrupt::IrqDispatch()
{
asm("stmfd sp!, {r4,r5,lr}");
asm("ldr r4, __KHwBaseIntIf"); // Base address of Interrupt interface
asm("ldr r12, __Handlers"); // Base address of interrupt handlers
asm("ldr r5, [r4, #%a0]" : : "i" ((TInt)KHoCIIIntAck)); // Acknowledge the interrupt
asm("ldr lr, __KHmIntMask"); // Interrupt mask in end-of-interrupt register
asm("and r5, r5, lr"); // r5 = interruptID
asm("cmp r5, lr"); // Spurious interrupt has ID 1023
asm("beq IRQ_End");
// Call handler
asm("add r12, r12, r5, lsl #3");
asm("adr lr, IRQ_End");
asm("ldmia r12, {r0, pc}"); // Call interrupt handler. This will alse clear interrupt cause.
// End of Interrupt
asm("IRQ_End:");
asm("str r5, [r4, #%a0]" : : "i" ((TInt)KHoCIIEndOfInt));
asm("ldmfd sp!, {r4,r5,pc}"); // No more pending, so finish
asm("__KHwBaseIntIf:");
asm(".word %a0" : : "i" ((TInt)KHwBaseIntIf));
asm("__Handlers: ");
asm(".word %a0" : : "i" ((TInt)&NaviEngineInterrupt::Handlers[0]));
asm("__KHmIntMask:");
asm(".word %a0" : : "i" ((TInt)1023));
}
#endif
//FIQ is not used, so this should never be called.
__NAKED__ void NaviEngineInterrupt::FiqDispatch()
{
asm("mov r0, #0");
asm("sub r0, r0, #1"); // r0 = -1
asm("str r0, [r0]"); // Generate exception
}