--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/bsptemplate/asspandvariant/template_assp/interrupts.cia Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,93 @@
+// Copyright (c) 1998-2009 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:
+// template\template_assp\interrupts.cia
+// Template ASSP interrupt control and dispatch
+//
+//
+
+#include <template_assp_priv.h>
+
+__NAKED__ void TemplateInterrupt::IrqDispatch()
+ {
+ // IRQ dispatcher
+ // Enter with r0-r3, r12 and return address on IRQ stack
+ // Must preserve r4-r11
+
+ // for the moment, use bit number as priority
+ asm("stmfd sp!, {r4-r6,lr} ");
+ asm("ldr r4, __KTemplateIntCtrlBase ");
+ asm("ldr r5, __Handlers ");
+ asm("dispatch_irq: ");
+ asm("ldr r12, [r4, #%a0]" : : "i" ((TInt)KHoInterruptsIrqPending)); // r12=IRQ pending register
+ asm("cmp r12, #0 ");
+ asm("ldmeqfd sp!, {r4-r6,pc} "); // no more pending, so finish
+ asm("mov r3, #31 ");
+ asm("cmp r12, #0x00010000 ");
+ asm("movcc r12, r12, lsl #16 ");
+ asm("subcc r3, r3, #16 ");
+ asm("cmp r12, #0x01000000 ");
+ asm("movcc r12, r12, lsl #8 ");
+ asm("subcc r3, r3, #8 ");
+ asm("cmp r12, #0x10000000 ");
+ asm("movcc r12, r12, lsl #4 ");
+ asm("subcc r3, r3, #4 ");
+ asm("cmp r12, #0x40000000 ");
+ asm("movcc r12, r12, lsl #2 ");
+ asm("subcc r3, r3, #2 ");
+ asm("cmp r12, #0x80000000 ");
+ asm("subcc r3, r3, #1 "); // r3=bit no. of MS 1
+ asm("add r0, r5, r3, lsl #3 "); // r0=address of SInterruptHandler
+ asm("adr lr, dispatch_irq "); // return to dispatch_irq
+ asm("ldmia r0, {r0,pc} "); // (*iIsr)(iPtr);
+ }
+
+__NAKED__ void TemplateInterrupt::FiqDispatch()
+ {
+ // FIQ dispatcher
+ // Enter with return address on FIQ stack
+ // We may use r8-r12, but must preserve other registers
+ // for the moment, use bit number as priority
+ // NOTE: STACK MISALIGNED ON ENTRY (1 WORD PUSHED)
+ asm("stmfd sp!, {r0-r3,lr} ");
+ asm("ldr r8, __KTemplateIntCtrlBase ");
+ asm("ldr r9, __Handlers ");
+ asm("dispatch_fiq: ");
+ asm("ldr r12, [r4, #%a0]" : : "i" ((TInt)KHoInterruptsFiqPending)); // r12=FIQ pending register
+ asm("cmp r12, #0 ");
+ asm("ldmeqfd sp!, {r0-r3,pc} "); // no more pending, so finish
+ asm("mov r3, #31 ");
+ asm("cmp r12, #0x00010000 ");
+ asm("movcc r12, r12, lsl #16 ");
+ asm("subcc r3, r3, #16 ");
+ asm("cmp r12, #0x01000000 ");
+ asm("movcc r12, r12, lsl #8 ");
+ asm("subcc r3, r3, #8 ");
+ asm("cmp r12, #0x10000000 ");
+ asm("movcc r12, r12, lsl #4 ");
+ asm("subcc r3, r3, #4 ");
+ asm("cmp r12, #0x40000000 ");
+ asm("movcc r12, r12, lsl #2 ");
+ asm("subcc r3, r3, #2 ");
+ asm("cmp r12, #0x80000000 ");
+ asm("subcc r3, r3, #1 "); // r3=bit no. of MS 1
+ asm("add r0, r9, r3, lsl #3 "); // r0=address of SInterruptHandler
+ asm("adr lr, dispatch_fiq "); // return to dispatch_fiq
+ asm("ldmia r0, {r0,pc} "); // (*iIsr)(iPtr);
+
+ asm("__KTemplateIntCtrlBase: ");
+ asm(".word %a0" : : "i" ((TInt)KHwBaseInterrupts));
+ asm("__Handlers: ");
+ asm(".word %a0" : : "i" ((TInt)&TemplateInterrupt::Handlers[0]));
+ }
+