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