led.lst

基于at91sam7s64的keil环境下的评估板亮灯练习程序

ARM COMPILER V2.42,  led                                                                   09/12/05  01:08:05  PAGE 1   


ARM COMPILER V2.42, COMPILATION OF MODULE led
OBJECT MODULE PLACED IN led.OBJ
COMPILER INVOKED BY: C:\Keil\ARM\BIN\CA.exe led.c THUMB BROWSE DEBUG TABS(4) 

stmt  level    source

    1          
    2          #include "at91sam7s64.h"
    3          
    4          
    5          void delay(unsigned long int i)
    6          {
    7   1          for(;i>0;i--)
    8   1          ;
    9   1      
   10   1      }
   11          
   12          
   13          void main(void)
   14          {
   15   1          *AT91C_PMC_PCER=0x0000000F;     //PMC外设时钟使能
   16   1          *AT91C_PIOA_PER=0x0000000F;     //PIOA0-3作为I/O使用
   17   1          *AT91C_PIOA_OER=0x0000000F;     //PIOA0-3输出使能
   18   1          for(;;)
   19   1          {
   20   2              unsigned long int i;
   21   2              for(i=1;i<=7;i++)           //4个LED灯以16进制方式显示0-15
   22   2              {
   23   3              delay(5000000);
   24   3              *AT91C_PIOA_SODR=0x0000000F;
   25   3              delay(5000000);
   26   3              *AT91C_PIOA_CODR=i;
   27   3              }
   28   2          
   29   2          }
   30   1      
   31   1      
   32   1      
   33   1      }
ARM COMPILER V2.42,  led                                                                   09/12/05  01:08:05  PAGE 2   

ASSEMBLY LISTING OF GENERATED OBJECT CODE



*** EXTERNALS:
 EXTERN NUMBER (__startup)



*** PUBLICS:
 PUBLIC         delay?T
 PUBLIC         main



*** CODE SEGMENT '?PR?delay?T?led':
    5: void delay(unsigned long int i)
 00000000  ---- Variable 'i' assigned to Register 'R0' ----
    7:     for(;i>0;i--)
 00000000  E000      B           L_3  ; T=0x00000004
    8:     ;
 00000002          L_1:
 00000002  3801      SUB         R0,#0x1
 00000004          L_3:
 00000004  1C01      MOV         R1,R0 ; i
 00000006  2900      CMP         R1,#0x0 ; i
 00000008  D8FB      BHI         L_1  ; T=0x00000002
   10: }
 0000000A  4770      BX          R14
 0000000C          ENDP ; 'delay?T'


*** CODE SEGMENT '?PR?main?led':
   13: void main(void)
 00000000  B500      PUSH        {LR}
   15:     *AT91C_PMC_PCER=0x0000000F;     //PMC外设时钟使能
 00000002  210F      MOV         R1,#0xF
 00000004  4800      LDR         R0,=0xFFFFFC10
 00000006  6001      STR         R1,[R0,#0x0]
   16:     *AT91C_PIOA_PER=0x0000000F;     //PIOA0-3作为I/O使用
 00000008  4800      LDR         R0,=0xFFFFF400
 0000000A  6001      STR         R1,[R0,#0x0]
   17:     *AT91C_PIOA_OER=0x0000000F;     //PIOA0-3输出使能
 0000000C  4800      LDR         R0,=0xFFFFF410
 0000000E  6001      STR         R1,[R0,#0x0]
   19:     {
 00000010            ; SCOPE-START
   21:         for(i=1;i<=7;i++)           //4个LED灯以16进制方式显示0-15
 00000010          L_15:
 00000010  2201      MOV         R2,#0x1
 00000012  ---- Variable 'i' assigned to Register 'R2' ----
 00000012          L_14:
   23:         delay(5000000);
 00000012  4800      LDR         R0,=0x4C4B40
 00000014  F7FF      BL          delay?T  ; T=0x0001  (1)
 00000016  FFF4      BL          delay?T  ; T=0x0001  (2)
   24:         *AT91C_PIOA_SODR=0x0000000F;
 00000018  210F      MOV         R1,#0xF
 0000001A  4800      LDR         R0,=0xFFFFF430
 0000001C  6001      STR         R1,[R0,#0x0]
   25:         delay(5000000);
 0000001E  4800      LDR         R0,=0x4C4B40
 00000020  F7FF      BL          delay?T  ; T=0x0001  (1)
 00000022  FFEE      BL          delay?T  ; T=0x0001  (2)
   26:         *AT91C_PIOA_CODR=i;
 00000024  1C11      MOV         R1,R2 ; i
 00000026  4800      LDR         R0,=0xFFFFF434
 00000028  6001      STR         R1,[R0,#0x0]
   27:            }
 0000002A  3201      ADD         R2,#0x1
 0000002C  1C10      MOV         R0,R2 ; i
 0000002E  2807      CMP         R0,#0x7 ; i
 00000030  D9EF      BLS         L_14  ; T=0x00000012
ARM COMPILER V2.42,  led                                                                   09/12/05  01:08:05  PAGE 3   

 00000032            ; SCOPE-END
   29:     }
 00000032  E7ED      B           L_15  ; T=0x00000010
 00000034  BC08      POP         {R3}
 00000036  4718      BX          R3
 00000038          ENDP ; 'main'



Module Information          Static
----------------------------------
  code size            =    ------
  data size            =    ------
  const size           =    ------
End of Module Information.


ARM COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)