Add support for creating a.out output files in addition to ELF.

This allows booting from compressed binaries using older bootstraps.

Thanks to: dwmalone

1 files changed, 79 insertions, 0 deletions

diff --git a/usr.sbin/kgzip/aouthdr.c b/usr.sbin/kgzip/aouthdr.c
new file mode 100644
index 0000000..27541e6
--- /dev/null
+++ b/usr.sbin/kgzip/aouthdr.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2000 Robert Nordier
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <stddef.h>
+#include "aouthdr.h"
+
+#define KGZ_FIX_NSIZE	0	/* Run-time fixup */
+
+const struct kgz_aouthdr0 aouthdr0 = {
+    /* a.out header */
+    {
+	MID_I386 << 020 | OMAGIC,			/* a_midmag */
+	0,						/* a_text */
+	sizeof(struct kgz_hdr) + KGZ_FIX_NSIZE, 	/* a_data */
+	0,						/* a_bss */
+	sizeof(struct nlist) * KGZ__STNUM,		/* a_syms */
+	0,						/* a_entry */
+	0,						/* a_trsize */
+	0						/* a_drsize */
+    }
+};
+
+const struct kgz_aouthdr1 aouthdr1 = {
+    /* Symbol table */
+    {
+	{
+	    {
+		(char *)offsetof(struct kgz__strtab,
+				 kgz)			/* n_un */
+	    },
+	    N_DATA | N_EXT,				/* n_type */
+	    AUX_OBJECT, 				/* n_other */
+	    0,						/* n_desc */
+	    0						/* n_value */
+	},
+	{
+	    {
+		(char *)offsetof(struct kgz__strtab,
+				 kgz_ndata)		/* n_un */
+	    },
+	    N_DATA | N_EXT,				/* n_type */
+	    AUX_OBJECT, 				/* n_other */
+	    0,						/* n_desc */
+	    sizeof(struct kgz_hdr)			/* n_value */
+	}
+    },
+    /* String table */
+    {
+	sizeof(struct kgz__strtab),			/* length */
+	KGZ__STR_KGZ,					/* kgz */
+	KGZ__STR_KGZ_NDATA				/* kgz_ndata */
+    }
+};