jump.s

来自「LPC2134的bootloader , 请用ADS查看地址设定。」· S 代码 · 共 70 行

;/****************************************Copyright (c)**************************************************
;**                               Guangzou ZLG-MCU Development Co.,LTD.
;**                                      graduate school
;**                                 http://www.zlgmcu.com
;**
;**--------------File Info-------------------------------------------------------------------------------
;** File name: 			Startup.s
;** Last modified Date:  2004-09-17
;** Last Version: 		1.0
;** Descriptions: 		The start up codes for LPC2100, including the initializing codes for the entry point of exceptions and the stacks of user tasks.
;**				Every project should have a independent copy of this file for related modifications
;**------------------------------------------------------------------------------------------------------
;** Created by: 			Chenmingji
;** Created date:   		2004-02-02
;** Version:				1.0
;** Descriptions: 		The original version
;**
;**------------------------------------------------------------------------------------------------------
;** Modified by: 		Chenmingji
;** Modified date:		2004-09-17
;** Version:				1.01
;** Descriptions: 		Modified the bus setting to adapt for many common situations 
;**
;**------------------------------------------------------------------------------------------------------
;** Modified by: 		Chenmingji
;** Modified date:		2004-09-17
;** Version:				1.02
;** Descriptions: 		Added codes to support the enciphering of the chip
;**
;**------------------------------------------------------------------------------------------------------
;** Modified by: 		Chenmingji
;** Modified date:		2004-09-17
;** Version:				1.04
;** Descriptions: 		Renewed the template, added codes to support more compilers 
;**
;**------------------------------------------------------------------------------------------------------
;** Modified by: 		
;** Modified date:
;** Version:	
;** Descriptions: 
;**
;********************************************************************************************************/



NoInt       EQU 0x80
USR32Mode   EQU 0x10
SVC32Mode   EQU 0x13
SYS32Mode   EQU 0x1f
IRQ32Mode   EQU 0x12
FIQ32Mode   EQU 0x11

    EXPORT  JumpTo ;  , Jump                      ; The label for exports 输出的标号
 
    CODE32

    AREA    IRQ,CODE 

JumpTo
	; Set up User Mode, set User Mode Stack and disable interrupts  

        MSR     CPSR_c, #(NoInt | USR32Mode)    ; Switch to the User Mode 切换到系统模式 
    	MOV   	pc,r0

    END
;/*********************************************************************************************************
;**                            End Of File
;********************************************************************************************************/