irq.lst

NXP的LPC2103使用串口的DEMO程序

ARM Macro Assembler    Page 1 


    1 00000000         ;/****************************************Copyright (c)*
                       *************************************************
    2 00000000         ;*******************************************************
                       *************************************************/
    3 00000000         
    4 00000000         
    5 00000000 00000080 
                       NoInt   EQU              0x80
    6 00000000         
    7 00000000 00000010 
                       USR32Mode
                               EQU              0x10
    8 00000000 00000013 
                       SVC32Mode
                               EQU              0x13
    9 00000000 0000001F 
                       SYS32Mode
                               EQU              0x1f
   10 00000000 00000012 
                       IRQ32Mode
                               EQU              0x12
   11 00000000 00000011 
                       FIQ32Mode
                               EQU              0x11
   12 00000000         
   13 00000000                 CODE32
   14 00000000         
   15 00000000                 AREA             IRQ,CODE,READONLY
   16 00000000         
   17 00000000                 MACRO
   18 00000000         $IRQ_Label
                               HANDLER          $IRQ_Exception_Function
   19 00000000         
   20 00000000                 EXPORT           $IRQ_Label  ; The label for exp
                                                            orts 输出的标号
   21 00000000                 IMPORT           $IRQ_Exception_Function ; The i
                                                            mported labels 引用
                                                            的外部标号
   22 00000000         
   23 00000000         $IRQ_Label
   24 00000000                 SUB              LR, LR, #4  ; Calculate the ret
                                                            urning address 计算
                                                            返回地址
   25 00000000                 STMFD            SP!, {R0-R3, R12, LR} ; Protect
                                                            s the task environm
                                                            ents 保存任务环境
   26 00000000                 MRS              R3, SPSR    ; Protects the stat
                                                            us variable 保存状