serial.lst

ARM例子

ARM COMPILER V2.53,  Serial                                                                22/04/07  09:58:00  PAGE 1   


ARM COMPILER V2.53, COMPILATION OF MODULE Serial
OBJECT MODULE PLACED IN .\Obj\Serial.obj
COMPILER INVOKED BY: c:\Keil\ARM\BIN\CA.exe Serial.c THUMB OPTIMIZE(7,SPEED) DEBUG PRINT(.\LST\SERIAL.LST) TABS(4) OBJEC
                    -T(.\Obj\Serial.obj) 

stmt  level    source

    1          /******************************************************************************/
    2          /*  This file is part of the uVision/ARM development tools                    */
    3          /*  Copyright KEIL ELEKTRONIK GmbH 2002-2004                                  */
    4          /******************************************************************************/
    5          /*                                                                            */
    6          /*  SERIAL.C:  Low Level Serial Routines                                      */
    7          /*                                                                            */
    8          /******************************************************************************/
    9          
   10          #include <LPC21xx.H>                     /* LPC21xx definitions               */
   11          
   12          #define CR     0x0D
   13          
   14          
   15          int putchar (int ch)  {                  /* Write character to Serial Port    */
   16   1      
   17   1        if (ch == '\n')  {
   18   2          while (!(U1LSR & 0x20));
   19   2          U1THR = CR;                          /* output CR */
   20   2        }
   21   1        while (!(U1LSR & 0x20));
   22   1        return (U1THR = ch);
   23   1      }
   24          
   25          
   26          int getchar (void)  {                    /* Read character from Serial Port   */
   27   1      
   28   1        while (!(U1LSR & 0x01));
   29   1      
   30   1        return (U1RBR);
   31   1      }
ARM COMPILER V2.53,  Serial                                                                22/04/07  09:58:00  PAGE 2   

ASSEMBLY LISTING OF GENERATED OBJECT CODE



*** PUBLICS:
 PUBLIC         putchar?T
 PUBLIC         getchar?T



*** CODE SEGMENT '?PR?putchar?T?Serial':
   15: int putchar (int ch)  {                  /* Write character to Serial Port    */
 00000000  1C01      MOV         R1,R0 ; ch
 00000002  ---- Variable 'ch' assigned to Register 'R1' ----
   17:   if (ch == '\n')  {
 00000002  1C08      MOV         R0,R1 ; ch
 00000004  280A      CMP         R0,#0xA ; ch
 00000006  D107      BNE         L_9  ; T=0x00000018
   18:     while (!(U1LSR & 0x20));
 00000008          L_2:
 00000008  4800      LDR         R0,=0xE0010014
 0000000A  7800      LDRB        R0,[R0,#0x0]
 0000000C  2220      MOV         R2,#0x20
 0000000E  4210      TST         R0,R2
 00000010  D0FA      BEQ         L_2  ; T=0x00000008
   19:     U1THR = CR;                          /* output CR */
 00000012  220D      MOV         R2,#0xD
 00000014  4800      LDR         R0,=0xE0010000
 00000016  7002      STRB        R2,[R0,#0x0]
   21:   while (!(U1LSR & 0x20));
 00000018          L_9:
 00000018          L_6:
 00000018  4800      LDR         R0,=0xE0010014
 0000001A  7800      LDRB        R0,[R0,#0x0]
 0000001C  2220      MOV         R2,#0x20
 0000001E  4210      TST         R0,R2
 00000020  D0FA      BEQ         L_6  ; T=0x00000018
   22:   return (U1THR = ch);
 00000022  1C08      MOV         R0,R1 ; ch
 00000024  0600      LSL         R0,R0,#0x18 ; ch
 00000026  0E00      LSR         R0,R0,#0x18
 00000028  4800      LDR         R1,=0xE0010000
 0000002A  7008      STRB        R0,[R1,#0x0]
 0000002C  0600      LSL         R0,R0,#0x18
 0000002E  0E00      LSR         R0,R0,#0x18
   23: }
 00000030  4770      BX          R14
 00000032          ENDP ; 'putchar?T'


*** CODE SEGMENT '?PR?getchar?T?Serial':
   28:   while (!(U1LSR & 0x01));
 00000000          L_11:
 00000000  4800      LDR         R0,=0xE0010014
 00000002  7800      LDRB        R0,[R0,#0x0]
 00000004  2101      MOV         R1,#0x1
 00000006  4208      TST         R0,R1
 00000008  D0FA      BEQ         L_11  ; T=0x00000000
   30:   return (U1RBR);
 0000000A  4800      LDR         R0,=0xE0010000
 0000000C  7800      LDRB        R0,[R0,#0x0]
   31: }
 0000000E  4770      BX          R14
 00000010          ENDP ; 'getchar?T'



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

ARM COMPILER V2.53,  Serial                                                                22/04/07  09:58:00  PAGE 3   


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