arch/ppc/kernel/find_name.c

   1 #include <stdio.h>
   2 #include <asm/page.h>
   3 #include <sys/mman.h>
   4 #include <strings.h>
   5 /*
   6  * Finds a given address in the System.map and prints it out
   7  * with its neighbors.  -- Cort
   8  */
   9
  10 int main(int argc, char **argv)
  11 {
  12         unsigned long addr, cmp, i;
  13         FILE *f;
  14         char s[256], last[256];
  15
  16         if ( argc < 2 )
  17         {
  18                 fprintf(stderr, "Usage: %s <address>\n", argv[0]);
  19                 return -1;
  20         }
  21
  22         for ( i = 1 ; argv[i] ; i++ )
  23         {
  24                 sscanf( argv[i], "%0lx", &addr );
  25                 /* adjust if addr is relative to kernelbase */
  26                 if ( addr < PAGE_OFFSET )
  27                         addr += PAGE_OFFSET;
  28
  29                 if ( (f = fopen( "System.map", "r" )) == NULL )
  30                 {
  31                         perror("fopen()\n");
  32                         exit(-1);
  33                 }
  34
  35                 while ( !feof(f) )
  36                 {
  37                         fgets(s, 255 , f);
  38                         sscanf( s, "%0lx", &cmp );
  39                         if ( addr < cmp )
  40                                 break;
  41                         strcpy( last, s);
  42                 }
  43
  44                 printf( "%s%s", last, s );
  45         }
  46         fclose(f);
  47         return 0;
  48 }