iov: Factor out hexdumper
Factor out the hexdumper functionality from iov for all to use. Useful for
creating verbose debug printfery that dumps packet data.
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: faaac219c55ea586d3f748befaf5a2788fd271b8.1361853677.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/util/hexdump.c b/util/hexdump.c
new file mode 100644
index 0000000..0d0efc8
--- /dev/null
+++ b/util/hexdump.c
@@ -0,0 +1,37 @@
+/*
+ * Helper to hexdump a buffer
+ *
+ * Copyright (c) 2013 Red Hat, Inc.
+ * Copyright (c) 2013 Gerd Hoffmann <kraxel@redhat.com>
+ * Copyright (c) 2013 Peter Crosthwaite <peter.crosthwaite@xilinx.com>
+ * Copyright (c) 2013 Xilinx, Inc
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+
+#include "qemu-common.h"
+
+void hexdump(const char *buf, FILE *fp, const char *prefix, size_t size)
+{
+ unsigned int b;
+
+ for (b = 0; b < size; b++) {
+ if ((b % 16) == 0) {
+ fprintf(fp, "%s: %04x:", prefix, b);
+ }
+ if ((b % 4) == 0) {
+ fprintf(fp, " ");
+ }
+ fprintf(fp, " %02x", (unsigned char)buf[b]);
+ if ((b % 16) == 15) {
+ fprintf(fp, "\n");
+ }
+ }
+ if ((b % 16) != 0) {
+ fprintf(fp, "\n");
+ }
+}
