read_a9.asm

OMAP1030 处理器的ARM 侧硬件测试代码 OMAP1030 是TI的双核处理器

;******************************************************************************
;            TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION           
;                                                                             
;   Property of Texas Instruments 
;   For  Unrestricted  Internal  Use  Only
;   Unauthorized reproduction and/or distribution is strictly prohibited.  
;   This product is protected under copyright law and trade secret law 
;   as an unpublished work.	
; 
;   Created 1999, (C) Copyright 1999 Texas Instruments.  All rights reserved.
;
;
;   Filename    : read_a9.asm
;
;   Description : Read word, half word and byte from memory 
;
;   Project     : Perseus
;
;   Author      : Sebastien Sabatier
; 
;******************************************************************************* 
	.state16		; thumb mode

	;.ref	edata		;defined by armas
	.global $r_32_a9
	.global $r_16_a9
	.global $r_8_a9
	;.ref    etext

;
;	Read a word, half word and byte
;
;	Data is written to the address given in argument.
;
;	Input : R0 = address
;
;	Output : R0 = data
;
$r_32_a9:           
	push	{lr}
	ldr	r0, [r0]
	pop 	{pc}		; Return to caller
	
$r_16_a9:
	push	{lr}
	ldrh	r0, [r0]
	pop 	{pc}		; Return to caller

$r_8_a9:
	push	{lr}
	ldrb	r0, [r0]
	pop 	{pc}		; Return to caller

		.end			; Terminate assembly