irq.lst

lpc2468的ADS串口0调试程序

ARM Macro Assembler    Page 1 


    1 00000000         ;/****************************************Copyright (c)*
                       **************************************************
    2 00000000         ;**                               Guangzou ZHIYUAN elect
                       ronics Co.,LTD.
    3 00000000         ;**                                      
    4 00000000         ;**                                 http://www.embedtool
                       s.com
    5 00000000         ;**
    6 00000000         ;**--------------File Info------------------------------
                       --------------------------------------------------
    7 00000000         ;** File Name: IRQ.s
    8 00000000         ;** Last modified Date:  2004-06-14
    9 00000000         ;** Last Version: 1.1
   10 00000000         ;** Descriptions: The irq handle that what allow the int
                       errupt nesting. 
   11 00000000         ;**
   12 00000000         ;**-----------------------------------------------------
                       --------------------------------------------------
   13 00000000         ;** Created By:  Chenmingji
   14 00000000         ;** Created date:   2004-09-17
   15 00000000         ;** Version: 1.0
   16 00000000         ;** Descriptions:  First version
   17 00000000         ;**
   18 00000000         ;**-----------------------------------------------------
                       --------------------------------------------------
   19 00000000         ;** Modified by:
   20 00000000         ;** Modified date:
   21 00000000         ;** Version:
   22 00000000         ;** Descriptions:
   23 00000000         ;**
   24 00000000         ;*******************************************************
                       *************************************************/
   25 00000000         
   26 00000000 00000080 
                       NoInt   EQU              0x80
   27 00000000         
   28 00000000 00000010 
                       USR32Mode
                               EQU              0x10
   29 00000000 00000013 
                       SVC32Mode
                               EQU              0x13
   30 00000000 0000001F 
                       SYS32Mode
                               EQU              0x1f
   31 00000000 00000012 
                       IRQ32Mode
                               EQU              0x12
   32 00000000 00000011 
                       FIQ32Mode
                               EQU              0x11
   33 00000000         
   34 00000000                 CODE32
   35 00000000         
   36 00000000                 AREA             IRQ,CODE,READONLY
   37 00000000         
   38 00000000                 MACRO
   39 00000000         $IRQ_Label
                               HANDLER          $IRQ_Exception_Function



ARM Macro Assembler    Page 2 


   40 00000000         
   41 00000000                 EXPORT           $IRQ_Label  ;  输出的标号      
                                                             
   42 00000000                 IMPORT           $IRQ_Exception_Function 
                                                            ;  引用的外部标号
   43 00000000         
   44 00000000         $IRQ_Label
   45 00000000                 SUB              LR, LR, #4  ;  计算返回地址
   46 00000000                 STMFD            SP!, {R0-R3, R12, LR} 
                                                            ;  保存任务环境
   47 00000000                 MRS              R3, SPSR    ;  保存状态
   48 00000000                 STMFD            SP, {R3,LR}^ ;  保存SPSR和用户