65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/* size - tell size of an object file Author: Andy Tanenbaum */
|
|
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
#include <a.out.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
|
|
int heading; /* set when heading printed */
|
|
int error;
|
|
|
|
int main(int argc, char **argv);
|
|
void size(char *name);
|
|
|
|
int main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int i;
|
|
|
|
if (argc == 1) {
|
|
size("a.out");
|
|
exit(error);
|
|
}
|
|
for (i = 1; i < argc; i++) size(argv[i]);
|
|
return(error);
|
|
}
|
|
|
|
|
|
|
|
void size(name)
|
|
char *name;
|
|
{
|
|
int fd, separate;
|
|
long dynam, allmem;
|
|
struct exec exec;
|
|
|
|
if ((fd = open(name, O_RDONLY)) < 0) {
|
|
fprintf(stderr, "size: can't open %s\n", name);
|
|
error = 1;
|
|
return;
|
|
}
|
|
if (read(fd, (char *)&exec, sizeof(struct exec)) != sizeof(struct exec)) {
|
|
fprintf(stderr, "size: %s: header too short\n", name);
|
|
error = 1;
|
|
close(fd);
|
|
return;
|
|
}
|
|
if (BADMAG(exec)) {
|
|
fprintf(stderr, "size: %s not an object file\n", name);
|
|
error = 1;
|
|
close(fd);
|
|
return;
|
|
}
|
|
separate = (exec.a_flags & A_SEP ? 1 : 0);
|
|
dynam = exec.a_total - exec.a_text - exec.a_data - exec.a_bss;
|
|
if (separate) dynam += exec.a_text;
|
|
allmem = (separate ? exec.a_total + exec.a_text : exec.a_total);
|
|
if (heading++ == 0) printf(" text data bss stack memory\n");
|
|
printf("%7ld %7ld %7ld %8ld %8ld %s\n",
|
|
exec.a_text, exec.a_data, exec.a_bss, dynam, allmem, name);
|
|
close(fd);
|
|
}
|