main.lst

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C51 COMPILER V6.23a  MAIN                                                                  06/09/2003 12:38:16 PAGE 1   


C51 COMPILER V6.23a, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE main.c LARGE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <REG52.H>                /* special function register declarations   */
   2                                            /* for the intended 8051 derivative         */
   3          #include <string.h>
   4          #include <stdio.h>                /* prototype declarations for I/O functions */
   5          #include <stdlib.h>
   6          #ifdef MONITOR51                         /* Debugging with Monitor-51 needs   */
              char code reserve [3] _at_ 0x23;         /* space for serial interrupt if     */
              #endif                                   /* Stop Exection with Serial Intr.   */
   9                                                   /* is enabled                        */
  10          /*------------------------------------------------
  11          The main C function.  Program execution starts
  12          here after stack initialization.
  13          ------------------------------------------------*/
  14          void main (void) {
  15   1              char *ptr1,*ptr2,*temp;
  16   1      
  17   1      /*------------------------------------------------
  18   1      Setup the serial port for 1200 baud at 16MHz.
  19   1      ------------------------------------------------*/
  20   1      #ifndef MONITOR51
  21   1          SCON  = 0x50;                       /* SCON: mode 1, 8-bit UART, enable rcvr      */
  22   1          TMOD |= 0x20;               /* TMOD: timer 1, mode 2, 8-bit reload        */
  23   1          TH1   = 221;                /* TH1:  reload value for 1200 baud @ 16MHz   */
  24   1          TR1   = 1;                  /* TR1:  timer 1 run                          */
  25   1          TI    = 1;                  /* TI:   set TI to send first char of UART    */
  26   1      #endif
  27   1      /*------------------------------------------------
  28   1      Note that an embedded program never exits (because
  29   1      there is no operating system to return to).  It
  30   1      must loop and execute forever.
  31   1      ------------------------------------------------*/
  32   1              init_mempool (0x1000,0x500);   
  33   1              ptr1=malloc(30);/*动态为指针变量分配长度为30字节的存储空间*/
  34   1              ptr2=malloc(20) ;
  35   1              temp=malloc(30) ;
  36   1              printf("input str1:");
  37   1              gets(ptr1,20);/*输入字符串*/
  38   1              printf("input str2:");
  39   1              gets(ptr2,20) ;
  40   1              printf("str1------------str2\n") ;
  41   1              printf("%s.......%s\n",ptr1,ptr2) ;
  42   1              strcpy(temp,ptr1);/*串复制*/
  43   1              strcpy(ptr1,ptr2) ;
  44   1              strcpy(ptr2,temp) ;
  45   1              printf("str1------------str2\n") ;
  46   1              printf("%s.......%s\n",ptr1,ptr2) ;
  47   1              free(ptr1) ;
  48   1              free(ptr2) ;
  49   1          while (1) {};
  50   1      }
  51          
  52          
  53          


C51 COMPILER V6.23a  MAIN                                                                  06/09/2003 12:38:16 PAGE 2   

MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    380    ----
   CONSTANT SIZE    =     59    ----
   XDATA SIZE       =   ----       9
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)