diff -r 000000000000 -r a41df078684a kerneltest/e32utils/profiler/sampler.cia --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/kerneltest/e32utils/profiler/sampler.cia Mon Oct 19 15:55:17 2009 +0100 @@ -0,0 +1,82 @@ +// Copyright (c) 1999-2009 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: +// e32utils\profiler\sampler.cia +// +// + +#include + +#include "sampler.h" +#include //temporary + + +#if defined(__GCC32__) +// CIA symbol macros for Gcc98r2 +#define CSM__ZN5NKern14CurrentContextEv " CurrentContext__5NKern" +#elif defined(__ARMCC__) +// CIA symbol macros for RVCT +#define CSM__ZN5NKern14CurrentContextEv " __cpp(NKern::CurrentContext)" +#else +// CIA symbol macros for EABI assemblers +#define CSM__ZN5NKern14CurrentContextEv " _ZN5NKern14CurrentContextEv" +#endif + + +__NAKED__ TUint IntStackPtr() + { + asm("mrs r1, cpsr "); + asm("bic r3, r1, #0x1f "); +//#ifdef __MISA__ +// asm("orr r3, r3, #0xd1 "); // mode_fiq, all interrupts off +//#else + asm("orr r3, r3, #0xd2 "); // mode_irq, all interrupts off +//#endif + asm("msr cpsr, r3 "); + asm("mov r0, sp "); // r0=sp_irq or sp_fiq + asm("msr cpsr, r1 "); // restore interrupts + __JUMP(,lr); + } + +__NAKED__ TUint32 SPSR() + { + asm("mrs r0, spsr "); + __JUMP(,lr); + } + + +// This will return 1 if it was iDFC interrupted (0 otherwise). +// As there is no Kernel interface for that, we have to 'fake' Kernel by +// setting SVC mode before calling NKern::CurrentContext. +// Without that, CurrentContext would always return EInterrupt. +__NAKED__ TUint IDFCRunning() + { + asm("stmfd sp!, {r4-r5} "); + + asm("mrs r5, cpsr"); // r5 = cpsr_irq + asm("bic r4, r5, #0xdf "); // clear interrupt mask & CPU mode + asm("orr r4, r4, #0xd3 "); // disable all interrupts and set SVC mode + + asm("msr CPSR_cf, r4"); // switch to SVC, (dissable FIQ, IRQ) + + // NKern::CurrentContext does not use sp (only r0,r1,r2) + // It is just lr in svc mode we need to preserve. + asm("mov r4, lr"); // r4 = lr_svc + asm("bl " CSM__ZN5NKern14CurrentContextEv ); // r0 = 1 if iDFC was running, 0 if a thread was running + asm("mov lr, r4"); // lr_svc is back to original state + + asm("msr CPSR_cf, r5"); // return to IRQ mode + + asm("ldmfd sp!, {r4-r5} "); + __JUMP(,lr); + }