#!/usr/bin/perl
#
use DynaLoader;

push(@dl_library_path,'/lib');
my $symbol=$ARGV[0];
@dl_resolve_using = DynaLoader::dl_findfile(qw(-ldl -lc));
my $lib_name='/lib/libc.so.6';

my $libref=DynaLoader::dl_load_file($lib_name,0x00001);
if (not defined $libref) { die "load lib: $! \n";}
my $symref =DynaLoader::dl_find_symbol($libref, $symbol);
#$symref -= 0x74000;

printf "%s : %4x \n",$symbol,$symref;

##</code><code>##

int search(char *pattern)
{
void *p;
int addr;

/* dlopen() the main program */
if ( !(p = dlopen(NULL, RTLD_LAZY)) ) {
fprintf(stderr, "%s\n", dlerror());
exit(-1);
}

/* search for the pattern */
if ( !(addr = (int)dlsym(p, pattern)) ) {
fprintf(stderr, "%s\n", dlerror());
exit(-1);
}

dlclose(p);

return(addr);
}

##</code><code>##

$ ./lib.pl system 
system : 0x400c52f0 
$ ./libcs -s system 
system: 0x400512f0 
$ ./lib.pl printf 
printf : 0x400d0d44 
$ ./libcs -s printf 
printf: 0x4005cd44