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authorH. Peter Anvin <hpa@zytor.com>2007-10-11 16:03:30 -0700
committerH. Peter Anvin <hpa@zytor.com>2007-12-13 13:55:54 -0800
commit8d8ec4ae593354aacb796308b4e6c4d6bd466242 (patch)
tree99a81b0d6bc305a2035ff75b87dabf3551513e8c /com32/samples
parent47b318940041cb713958d469a88b1859e14808b0 (diff)
downloadsyslinux-8d8ec4ae593354aacb796308b4e6c4d6bd466242.tar.gz
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Initial support for auxilliary data vector
Initial support for the auxillary data vector, a storage mechanism intended to support boot-once and similar features.
Diffstat (limited to 'com32/samples')
-rw-r--r--com32/samples/Makefile1
-rw-r--r--com32/samples/advdump.c53
2 files changed, 54 insertions, 0 deletions
diff --git a/com32/samples/Makefile b/com32/samples/Makefile
index e14e08f1..197e9114 100644
--- a/com32/samples/Makefile
+++ b/com32/samples/Makefile
@@ -45,6 +45,7 @@ all: hello.c32 cat.c32 resolv.c32 vesainfo.c32 serialinfo.c32 \
localboot.c32 \
fancyhello.c32 fancyhello.lnx \
keytest.c32 keytest.lnx \
+ advdump.c32
.PRECIOUS: %.o
%.o: %.S
diff --git a/com32/samples/advdump.c b/com32/samples/advdump.c
new file mode 100644
index 00000000..f50401b9
--- /dev/null
+++ b/com32/samples/advdump.c
@@ -0,0 +1,53 @@
+/* ----------------------------------------------------------------------- *
+ *
+ * Copyright 2007 H. Peter Anvin - All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ * Boston MA 02111-1307, USA; either version 2 of the License, or
+ * (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * advdump.c
+ *
+ * Dump the contents of the syslinux ADV
+ */
+
+#include <stdio.h>
+#include <console.h>
+#include <syslinux/adv.h>
+#include <string.h>
+
+int main(void)
+{
+ uint8_t *p, *ep;
+ size_t s = syslinux_adv_size();
+ char buf[256];
+
+ openconsole(&dev_stdcon_r, &dev_stdcon_w);
+
+ p = syslinux_adv_ptr();
+
+ printf("ADV size: %zd bytes at %p\n", s, p);
+
+ ep = p+s; /* Need at least opcode+len */
+ while (p < ep-1 && *p) {
+ int t = *p++;
+ int l = *p++;
+
+ if (p+l > ep)
+ break;
+
+ memcpy(buf, p, l);
+ buf[l] = '\0';
+
+ printf("ADV %3d: \"%s\"\n", t, buf);
+
+ p += l;
+ }
+
+ return 0;
+}