TOOLS/mem2dump.c

   1 /*
   2     bios2dump.c - Was designed to dump memory block to file.
   3     Usage: as argument requires absolute address of memory dump and its lenght
   4     (int hexadecimal form).
   5     as output - will write file which will named: memADDR_LEN.dump
   6     where: ADDR - given address of memory
   7            LEN  - given length of memory
   8     Licence: GNU GPL v2
   9     Copyright: Nick Kurshev <nickols_k@mail.ru>
  10 */
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13
  14 int main( int argc, char *argv[])
  15 {
  16   FILE * fd_mem, *fd_out;
  17   unsigned long i,addr,len;
  18   int int_no;
  19   char outname[80];
  20   unsigned char ch;
  21   if(argc < 3)
  22   {
  23     printf("Usage: %s address length (in hex)\n",argv[0]);
  24     return EXIT_FAILURE;
  25   }
  26   addr = strtol(argv[1],NULL,16);
  27   len  = strtol(argv[2],NULL,16);
  28   if(!(fd_mem = fopen("/dev/mem","rb")))
  29   {
  30     perror("Can't open file - /dev/mem");
  31     return EXIT_FAILURE;
  32   }
  33   sprintf(outname,"mem%08X_%08X.dump",addr,len);
  34   if(!(fd_out = fopen(outname,"wb")))
  35   {
  36     perror("Can't open output file");
  37     fclose(fd_mem);
  38     return EXIT_FAILURE;
  39   }
  40   fseek(fd_mem,addr,SEEK_SET);
  41   for(i=0;i<len;i++)
  42   {
  43     fread(&ch,1,1,fd_mem);
  44     fwrite(&ch,1,1,fd_out);
  45   }
  46   fclose(fd_out);
  47   fclose(fd_mem);
  48   return EXIT_SUCCESS;
  49 }