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#include <dlfcn.h>
#include <nlist.h>
static int add_compile_args(int ac, char *av[], int kflag)
{
av[ac++] = "-fPIC";
return(ac);
}
static int add_link_args(int ac, char *av[], int kflag)
{
av[ac++] = findenv("CNETLD", CNETLD);
av[ac++] = "ld";
av[ac++] = "-shared";
return(ac);
}
static void data_segments(int n, void *handle, char *so_filenm)
{
extern int nlist(const char *, struct nlist *);
typedef struct _c {
char *so_filenm;
unsigned long length_data;
char *incore_data;
char *original_data;
struct _c *next;
} CACHE;
static CACHE *chd = (CACHE *)NULL;
CACHE *cp = chd;
NODE *np = &NP[n];
struct nlist nls[3];
while(cp != (CACHE *)NULL) {
if(strcmp(cp->so_filenm, so_filenm) == 0)
goto found;
cp = cp->next;
}
nls[0].n_name = "__DYNAMIC";
nls[1].n_name = "_end";
nls[2].n_name = (char *)NULL;
if(nlist(so_filenm, nls) != 0) {
fprintf(stderr,"%s: cannot load symbols from %s\n",
argv0,so_filenm);
++nerrors;
return;
}
cp = (CACHE *)malloc(sizeof(CACHE));
cp->so_filenm = strdup(so_filenm);
cp->length_data = (nls[1].n_value - nls[0].n_value);
cp->incore_data = (char *)((long)dlsym(handle,"end") - cp->length_data);
cp->original_data = (char *)malloc(cp->length_data);
memcpy(cp->original_data, cp->incore_data, cp->length_data);
cp->next = chd;
chd = cp;
if(vflag)
fprintf(stderr,"%s dataseg=0x%08lx len(dataseg)=%ld\n",
so_filenm, (long)cp->incore_data, cp->length_data);
found:
np->length_data[0] = cp->length_data;
np->incore_data[0] = cp->incore_data;
np->original_data[0] = cp->original_data;
np->private_data[0] = (char *)malloc(cp->length_data);
memcpy(np->private_data[0], cp->original_data, cp->length_data);
}
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