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// Copyright (c) 2008-2009 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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// e32test\nkernsa\arm\armutils.cia
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//
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//
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#include <arm.h>
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#include <nktest/nkutils.h>
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#include <e32cia.h>
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#ifdef __SMP__
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#include <arm_tmr.h>
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#endif
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extern "C" {
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void thread_request_signal(NThread* aThread);
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extern TUint64 fcf;
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extern TUint32 nfcf;
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extern TUint32 nfcfs;
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__NAKED__ void __cpu_idle()
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{
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ARM_WFI;
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__JUMP(,lr);
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}
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__NAKED__ void __cpu_yield()
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{
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ARM_YIELD;
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__JUMP(,lr);
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}
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__NAKED__ TLinAddr __stack_pointer()
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{
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asm("mov r0, sp ");
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__JUMP(,lr);
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}
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__NAKED__ TUint32 __cpu_status_reg()
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{
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asm("mrs r0, cpsr ");
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__JUMP(,lr);
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}
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__NAKED__ TUint32 __cpu_id()
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{
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asm("mrc p15, 0, r0, c0, c0, 5 ");
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__JUMP(,lr);
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}
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__NAKED__ TUint32 __trace_cpu_num()
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{
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asm("mrc p15, 0, r0, c0, c0, 5 ");
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asm("and r0, r0, #15 ");
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__JUMP(,lr);
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}
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__NAKED__ TUint32 __get_rwno_tid()
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{
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GET_RWNO_TID(,r0);
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__JUMP(,lr);
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}
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__NAKED__ TUint32 __get_static_data()
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{
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asm("ldr r0, 1f ");
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asm("ldr r0, [r0] ");
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__JUMP(,lr);
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asm("1: ");
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asm(".word %a0" : : "i" ((TInt)&TheScheduler));
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}
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#ifdef __SMP__
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__NAKED__ TUint32 __get_local_timer_address()
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{
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GET_RWNO_TID(,r0);
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asm("nop ");
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asm("nop ");
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asm("nop ");
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asm("ldr r0, [r0, #%a0]" : : "i" _FOFF(TSubScheduler,i_LocalTimerAddr));
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asm("nop ");
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asm("nop ");
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asm("nop ");
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__JUMP(,lr);
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}
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__NAKED__ TUint32 __get_local_timer_count()
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{
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GET_RWNO_TID(,r0);
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asm("nop ");
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asm("nop ");
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asm("nop ");
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asm("ldr r1, [r0, #%a0]" : : "i" _FOFF(TSubScheduler,i_LocalTimerAddr));
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asm("nop ");
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asm("nop ");
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asm("nop ");
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asm("ldr r0, [r1, #%a0]" : : "i" _FOFF(ArmLocalTimer,iTimerCount));
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asm("cmp r0, #0 ");
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__JUMP(,lr);
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}
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__NAKED__ TUint32 __set_local_timer_count()
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{
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GET_RWNO_TID(,r0);
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asm("nop ");
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asm("nop ");
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asm("nop ");
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asm("ldr r1, [r0, #%a0]" : : "i" _FOFF(TSubScheduler,i_LocalTimerAddr));
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asm("nop ");
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asm("nop ");
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asm("nop ");
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asm("ldr r0, [r1, #%a0]" : : "i" _FOFF(ArmLocalTimer,iTimerCount));
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asm("str r0, [r1, #%a0]" : : "i" _FOFF(ArmLocalTimer,iTimerCount));
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__JUMP(,lr);
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}
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__NAKED__ TUint32 __swp_local_timer_count()
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{
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GET_RWNO_TID(,r0);
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asm("nop ");
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asm("nop ");
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asm("nop ");
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asm("ldr r1, [r0, #%a0]" : : "i" _FOFF(TSubScheduler,i_LocalTimerAddr));
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asm("nop ");
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asm("nop ");
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asm("nop ");
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asm("ldr r0, [r1, #%a0]!" : : "i" _FOFF(ArmLocalTimer,iTimerCount));
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asm("swp r0, r0, [r1] ");
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__JUMP(,lr);
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}
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#endif
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TUint32 __NAKED__ norm_fast_counter()
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{
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asm("str lr, [sp, #-4]! ");
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asm("bl " CSM_CFUNC(fast_counter));
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asm("ldr r2, __nfcfs ");
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asm("ldr r2, [r2] ");
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asm("rsb r3, r2, #32 ");
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asm("mov r0, r0, lsr r2 ");
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asm("orr r0, r0, r1, lsl r3 ");
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__POPRET("");
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asm("__nfcfs: ");
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asm(".word nfcfs ");
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}
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__NAKED__ TUint32 set_bit0_if_nonnull(TUint32&)
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{
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__DATA_MEMORY_BARRIER_Z__(r12);
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asm("mov r3, r0 ");
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asm("1: ");
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LDREX(0,3);
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asm("movs r1, r0 ");
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asm("beq 2f ");
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asm("orr r1, r1, #1 ");
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STREX(12,1,3);
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asm("cmp r12, #0 ");
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asm("bne 1b ");
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asm("2: ");
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__DATA_MEMORY_BARRIER_Z__(r12);
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__JUMP(,lr);
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}
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__NAKED__ void flip_bit0(TUint32&)
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{
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__DATA_MEMORY_BARRIER_Z__(r12);
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asm("1: ");
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LDREX(1,0);
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asm("eor r1, r1, #1 ");
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STREX(12,1,0);
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asm("cmp r12, #0 ");
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asm("bne 1b ");
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__DATA_MEMORY_BARRIER__(r12);
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__JUMP(,lr);
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}
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__NAKED__ TUint32 swap_out_if_bit0_clear(TUint32&)
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{
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__DATA_MEMORY_BARRIER_Z__(r12);
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asm("mov r3, r0 ");
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asm("1: ");
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LDREX(0,3);
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asm("tst r0, #1 ");
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asm("bne 2f ");
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STREX(2,12,3);
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asm("cmp r2, #0 ");
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asm("bne 1b ");
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asm("2: ");
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__DATA_MEMORY_BARRIER_Z__(r12);
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__JUMP(,lr);
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}
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__NAKED__ TUint32 __cpsr()
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{
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asm("mrs r0, cpsr ");
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__JUMP(,lr);
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}
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}
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__NAKED__ void RequestComplete(NThread* /*aThread*/, NRequestStatus*& /*aStatus*/, TInt /*aValue*/)
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{
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__DATA_MEMORY_BARRIER_Z__(r12);
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asm("str lr, [sp, #-4]! ");
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asm("1: ");
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LDREX(3,1);
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STREX(14,12,1);
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asm("cmp r14, #0 ");
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asm("bne 1b ");
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asm("cmp r3, #0 ");
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asm("ldr lr, [sp], #4 ");
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asm("strne r2, [r3] ");
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asm("bne " CSM_CFUNC(thread_request_signal));
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__JUMP(,lr);
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}
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