; Copyright (c) 2007-2010 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:

; 

;

        AREA |d-rmdebug-bkpt$$Code|, CODE, READONLY, ALIGN=6

	CODE32

	; ARM tests

; 

; Non-PC modifying

;

	EXPORT RMDebug_StepTest_Non_PC_Modifying

	EXPORT RMDebug_StepTest_Non_PC_Modifying_OK

RMDebug_StepTest_Non_PC_Modifying

	mov		r0,r0		; nop

RMDebug_StepTest_Non_PC_Modifying_OK

	bx		lr			; should return to normal execution of the test thread

;

; Branch

;

	EXPORT RMDebug_StepTest_Branch

	EXPORT RMDebug_StepTest_Branch_1

RMDebug_StepTest_Branch

	b		RMDebug_StepTest_Branch_1		

	mov		r0, #2		; if the pc ends up here, we know its gone wrong

RMDebug_StepTest_Branch_1

	bx		lr			; return

;

; Branch and Link

;

	EXPORT RMDebug_StepTest_Branch_And_Link

	EXPORT RMDebug_StepTest_Branch_And_Link_1

	EXPORT RMDebug_StepTest_Branch_And_Link_2

RMDebug_StepTest_Branch_And_Link		

	mov		r0, lr		; preserve lr for the moment

RMDebug_StepTest_Branch_And_Link_1

	bl		RMDebug_StepTest_Branch_And_Link_2

	mov		r1, #1		; insert a gap in the instruction stream so we know we branched.

RMDebug_StepTest_Branch_And_Link_2

	mov		lr, r0		; restore lr			

	bx		lr			; should return to normal execution of the test thread

;

; MOV PC

;

	EXPORT RMDebug_StepTest_MOV_PC

	EXPORT RMDebug_StepTest_MOV_PC_1

	EXPORT RMDebug_StepTest_MOV_PC_2

RMDebug_StepTest_MOV_PC

	mov		r0, #4

RMDebug_StepTest_MOV_PC_1

	add		pc, pc, r0	; should be a jump (bear in mind reading pc = current inst + 8bytes for arm)

	mov		r0, #1		; Simple instructions which allow us to test where the PC really is

	mov		r0, #2		; just by reading r0.

RMDebug_StepTest_MOV_PC_2

	mov		r0, #3		; 

	mov		r0, #4		; 

	bx		lr			; should return to normal execution of the test thread

; 

; LDR PC

;

	EXPORT RMDebug_StepTest_LDR_PC

	EXPORT RMDebug_StepTest_LDR_PC_1

RMDebug_StepTest_LDR_PC

	ldr		pc, =RMDebug_StepTest_LDR_PC_1

	mov		r0, #1		;  separate the branch target so we can prove it works

RMDebug_StepTest_LDR_PC_1

	bx		lr			; should return to normal execution of the test thread

;

; Stepping performance tests

;

; This counts down from 100000 to 0

; This means that for all practical purposes

; we can single-step as much as we like

; in less than one second and have some likelyhood

; that we will not step too far from our loop

	EXPORT RMDebug_StepTest_Count

	EXPORT RMDebug_StepTest_Count_1

	EXPORT RMDebug_StepTest_Count_2

RMDebug_StepTest_Count

	ldr		r2, =100000

RMDebug_StepTest_Count_1

	subs	r2, r2, #1

RMDebug_StepTest_Count_2

	bne		RMDebug_StepTest_Count_1

	bx		lr

;

; ARM multiple-step ( 5 steps )

;

	EXPORT RMDebug_StepTest_ARM_Step_Multiple

	EXPORT RMDebug_StepTest_ARM_Step_Multiple_1

RMDebug_StepTest_ARM_Step_Multiple

	mov		r0,r0		; nop

	mov		r0,r0		; nop

	mov		r0,r0		; nop

	mov		r0,r0		; nop

	mov		r0,r0		; nop

RMDebug_StepTest_ARM_Step_Multiple_1

	bx		lr

	END

; End of file - d_rmdebug_step_test_armv4.s