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authorglass <glass@NetBSD.org>1993-10-12 06:02:08 +0000
committerglass <glass@NetBSD.org>1993-10-12 06:02:08 +0000
commit428bb7f59453c72c668afb0a3bc7c4f509e0d237 (patch)
treebee30a510beaba9fd92b06089c1c15961c99ad96 /sys/boot/exec.c
parentb9e5a43208abd937cf5251223a9cab1772623711 (diff)
netboot is now in the tree. the argument that finally resulted in it being here
will also keep netboot from compiling until fixes are made.
Diffstat (limited to 'sys/boot/exec.c')
-rw-r--r--sys/boot/exec.c206
1 files changed, 206 insertions, 0 deletions
diff --git a/sys/boot/exec.c b/sys/boot/exec.c
new file mode 100644
index 00000000000..a68d25b2266
--- /dev/null
+++ b/sys/boot/exec.c
@@ -0,0 +1,206 @@
+/*
+ * Copyright (c) 1993 Adam Glass
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Adam Glass.
+ * 4. The name of the Author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Adam Glass ``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 REGENTS OR CONTRIBUTORS 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.
+ *
+ * $Header: /cvsroot/src/sys/boot/Attic/exec.c,v 1.1 1993/10/12 06:02:25 glass Exp $
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/cdefs.h>
+#include <sys/mount.h>
+#include <sys/exec.h>
+#include <sys/errno.h>
+#include <sys/time.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+
+#include <nfs/rpcv2.h>
+#include <nfs/nfsv2.h>
+
+#include <a.out.h>
+
+#include "netboot.h"
+#include "config.h"
+#include "netif.h"
+#include "exec_var.h"
+
+char *kern_names[] = {
+ "netbsd", "onetbsd", "netbsd.old",
+ MACHINE "bsd", "o" MACHINE "bsd", MACHINE "bsd.old"
+ "vmunix", "ovmunix", "vmunix.old", NULL
+};
+
+void nfs_load_image(desc, image, ev)
+ struct iodesc *desc;
+ char *image;
+ struct exec_var *ev;
+{
+ u_long t;
+
+ t = gettenths();
+ printf("%s: ", image);
+ readseg(desc, ev->text_info.file_offset,
+ ev->text_info.segment_size, ev->text_info.segment_va);
+ printf("%d", ev->text_info.segment_size);
+ readseg(desc, ev->data_info.file_offset,
+ ev->data_info.segment_size, ev->data_info.segment_va);
+ printf("+%d", ev->data_info.segment_size);
+ printf("+%d", ev->bss_info.segment_size);
+ t = gettenths() - t;
+ printf(" [%d.%d seconds]\n", t/10, t%10);
+}
+
+unsigned int nfs_load(desc, nfsdp, image)
+ struct iodesc *desc;
+ struct nfs_diskless **nfsdp;
+ char *image;
+{
+ struct exec_var ev;
+
+ /* get fundamental parameters */
+ if (machdep_exec_override(desc, &ev))
+ if (netbsd_exec(desc, &ev))
+ if (machdep_exec(desc, &ev))
+ panic("nfs_load: unable to understand image");
+
+ machdep_exec_setup(&ev);
+
+ nfs_load_image(desc, image, &ev);
+
+ if (ev.nfs_disklessp)
+ *nfsdp = (struct nfs_diskless *) ev.nfs_disklessp;
+ return ev.real_entry_point;
+}
+
+int netbsd_exec_compute(exec, ev)
+ struct exec exec;
+ struct exec_var *ev;
+{
+ bzero(ev, sizeof(*ev));
+
+ ev->text_info.file_offset = N_TXTOFF(exec);
+ ev->text_info.segment_size = exec.a_text;
+ ev->text_info.segment_addr = N_TXTADDR(exec) + exec.a_entry;
+
+ ev->data_info.file_offset = N_DATOFF(exec);
+ ev->data_info.segment_size = exec.a_data;
+ ev->data_info.segment_addr = N_DATADDR(exec) + exec.a_entry;
+
+ ev->bss_info.file_offset = 0;
+ ev->bss_info.segment_size = exec.a_bss;
+ ev->bss_info.segment_addr = N_DATADDR(exec)+exec.a_data + exec.a_entry;
+
+ ev->entry_point = exec.a_entry;
+
+ return 0;
+}
+int netbsd_exec(desc, ev)
+ struct iodesc *desc;
+ struct exec_var *ev;
+{
+ int cc, error;
+ u_long midmag, magic;
+ u_short mid;
+ struct exec exec;
+
+ cc = readdata(desc, 0, &exec, sizeof(exec));
+
+ if (cc != sizeof(exec))
+ panic("netbsd_exec: image appears truncated\n");
+ if (cc < 0)
+ panic("netbsd_exec: bad exec read\n");
+ if (N_GETMID(exec) != MID_MACHINE) {
+ error = 1;
+ goto failed;
+ }
+ if (N_BADMAG(exec)) {
+ error = 1;
+ goto failed;
+ }
+ error = netbsd_exec_compute(exec, ev);
+ failed:
+ if (error)
+ printf("netbsd_exec: bad exec? code %d\n", error);
+ return error;
+}
+
+void nfs_exec(desc, kernel_override)
+ struct iodesc *desc;
+ char *kernel_override;
+{
+ time_t tenths;
+ char *image;
+ u_long ftype, bytes;
+ u_char image_fh[NFS_FHSIZE];
+ struct nfs_diskless *nfsd;
+ unsigned int call_addr;
+
+ nfsd = NULL;
+ image = NULL;
+
+ if (kernel_override) {
+ image = kernel_override;
+ /* Get image file handle and size */
+ if (lookupfh(desc, image, image_fh, NULL, &bytes, &ftype) < 0)
+ panic("nfs_exec: lookup failed %s: %s", image, strerror(errno));
+ if (ftype != NFREG)
+ panic("nfs_exec: bad image ftype %d", ftype);
+ }
+ else {
+ int i;
+
+ for (i = 0; kern_names[i]; i++) {
+ if (lookupfh(desc, kern_names[i], image_fh, NULL,
+ &bytes, &ftype) < 0)
+ continue;
+ if (ftype != NFREG)
+ panic("nfs_exec: %s, bad image ftype %d",
+ kern_names[i], ftype);
+ image = kern_names[i];
+ break;
+ }
+ if (!image)
+ panic("nfs_exec: couldn't find kernel");
+ }
+ printf("nfs_exec: %s\n", image);
+ desc->fh = image_fh;
+ call_addr = nfs_load(desc, &nfsd, image);
+
+#if 0
+ if (nfsd)
+ nfs_diskless_munge(nfsd);
+#endif
+ /* Now we're ready to fill in the nfs_diskless struct */
+#if 0
+ if (nfsd)
+ diskless_setup(desc, (struct nfs_diskless_v1 *)sym);
+#endif
+}