/*

* Program that prints out some interesting parts of the memory map

*/

#include <stdio.h>

#include <stdlib.h>

double bssvar = 10000.0;

char datavar[4096];

int main()

{

char *heapaddrp;

size_t blocksize;

long iter, modval;

printf("&main = %016lx\n", (long)main);

printf("&bssvar = %016lx\n", (long)&bssvar);

printf("&datavar = %016lx\n", (long)&datavar);

/* Compute the size of the malloc blocks */

if (sizeof(long) == 8) { /* 64 bit */

blocksize = (1024 * (1 << 20));

blocksize *= 4;

modval = 128;

}

else { /* 32 bit */

blocksize = (1 << 20);

modval = 16;

}

/* Allocate big chunks until the heap is exhausted */

printf("heap addresses:\n");

iter = 0;

while(1) {

if ((heapaddrp = malloc(blocksize)) == NULL)

break;

if ((iter%modval) == 0)

printf("heapaddrp = %016lx\n", (long)heapaddrp);

iter++;

}

printf("stacktop = %016lx\n", (long)&heapaddrp);

printf("\nPause, and check .so locations using pmap\n");

while(1); /* check .so locations with pmap */

exit(0);

}