1 files changed, 87 insertions, 0 deletions
diff --git a/unix/shlib/coff.c b/unix/shlib/coff.c
new file mode 100644
index 00000000..a0a0128c
--- /dev/null
+++ b/unix/shlib/coff.c
@@ -0,0 +1,87 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#include <stdio.h>
+#include <filehdr.h>
+#include <aouthdr.h>
+#include <scnhdr.h>
+
+/* COFF -- Examine the header of a COFF file.
+ */
+main (argc, argv)
+int	argc;
+char	*argv[];
+{
+	struct	filehdr fh;
+	struct	aouthdr sh;
+	struct	scnhdr nh;
+	int	fd;
+
+	if (argc < 2) {
+	    fprintf (stderr, "Usage: coff <filename>\n");
+	    exit (0);
+	}
+
+	if ((fd = open (argv[1], 0)) == -1) {
+	    fprintf (stderr, "cannot open %s\n", argv[1]);
+	    exit (1);
+	}
+
+	/* Show file header. */
+	if (read (fd, &fh, sizeof(fh)) != sizeof(fh))
+	    goto readerr;
+	else if (!ISCOFF(fh.f_magic)) {
+	    fprintf (stderr, "not a COFF format file\n");
+	    /* exit (2); */
+	}
+
+	printf ("File header:\n");
+	printf ("%16s: %10d %10x  %012o\n",
+	    "f_magic", fh.f_magic, fh.f_magic, fh.f_magic);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "f_nscns", fh.f_nscns, fh.f_nscns, fh.f_nscns);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "f_timdat", fh.f_timdat, fh.f_timdat, fh.f_timdat);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "f_symptr", fh.f_symptr, fh.f_symptr, fh.f_symptr);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "f_nsyms", fh.f_nsyms, fh.f_nsyms, fh.f_nsyms);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "f_opthdr", fh.f_opthdr, fh.f_opthdr, fh.f_opthdr);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "f_flags", fh.f_flags, fh.f_flags, fh.f_flags);
+
+	/* Show system header. */
+	if (read (fd, &sh, sizeof(sh)) != sizeof(sh))
+	    goto readerr;
+	else if (sh.magic != 0413) {
+	    fprintf (stderr, "bad magic %o in system header\n", sh.magic);
+	    exit (3);
+	}
+
+	printf ("System header:\n");
+	printf ("%16s: %10d %10x  %012o\n",
+	    "magic", sh.magic, sh.magic, sh.magic);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "vstamp", sh.vstamp, sh.vstamp, sh.vstamp);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "tsize", sh.tsize, sh.tsize, sh.tsize);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "dsize", sh.dsize, sh.dsize, sh.dsize);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "bsize", sh.bsize, sh.bsize, sh.bsize);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "entry", sh.entry, sh.entry, sh.entry);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "text_start", sh.text_start, sh.text_start, sh.text_start);
+	printf ("%16s: %10d %10x  %012o\n",
+	    "data_start", sh.data_start, sh.data_start, sh.data_start);
+
+	fflush (stdout);
+	close (fd);
+	exit (0);
+
+readerr:
+	fprintf (stderr, "file read error\n");
+	exit (4);
+}