1:03 p.m.
In preparation for tests that may need to set, retrieve, and display
opaque data, add a hexdump function in util.
Signed-off-by: Vishal Verma <vishal.l.verma(a)intel.com>
---
util/hexdump.h | 8 ++++++++
util/hexdump.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 61 insertions(+)
create mode 100644 util/hexdump.h
create mode 100644 util/hexdump.c
diff --git a/util/hexdump.h b/util/hexdump.h
new file mode 100644
index 0000000..d322b6a
--- /dev/null
+++ b/util/hexdump.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2021 Intel Corporation. All rights reserved. */
+#ifndef _UTIL_HEXDUMP_H_
+#define _UTIL_HEXDUMP_H_
+
+void hex_dump_buf(unsigned char *buf, int size);
+
+#endif /* _UTIL_HEXDUMP_H_*/
diff --git a/util/hexdump.c b/util/hexdump.c
new file mode 100644
index 0000000..1ab0118
--- /dev/null
+++ b/util/hexdump.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2015-2021 Intel Corporation. All rights reserved. */
+#include <stdio.h>
+#include <util/hexdump.h>
+
+static void print_separator(int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ fprintf(stderr, "-");
+ fprintf(stderr, "\n");
+}
+
+void hex_dump_buf(unsigned char *buf, int size)
+{
+ int i;
+ const int grp = 4; /* Number of bytes in a group */
+ const int wid = 16; /* Bytes per line. Should be a multiple of grp */
+ char ascii[wid + 1];
+
+ /* Generate header */
+ print_separator((wid * 4) + (wid / grp) + 12);
+
+ fprintf(stderr, "Offset ");
+ for (i = 0; i < wid; i++) {
+ if (i % grp == 0) fprintf(stderr, " ");
+ fprintf(stderr, "%02x ", i);
+ }
+ fprintf(stderr, " Ascii\n");
+
+ print_separator((wid * 4) + (wid / grp) + 12);
+
+ /* Generate hex dump */
+ for (i = 0; i < size; i++) {
+ if (i % wid == 0) fprintf(stderr, "%08x ", i);
+ ascii[i % wid] =
+ ((buf[i] >= ' ') && (buf[i] <= '~')) ? buf[i] :
'.';
+ if (i % grp == 0) fprintf(stderr, " ");
+ fprintf(stderr, "%02x ", buf[i]);
+ if ((i == size - 1) && (size % wid != 0)) {
+ int j;
+ int done = size % wid;
+ int grps_done = (done / grp) + ((done % grp) ? 1 : 0);
+ int spaces = wid / grp - grps_done + ((wid - done) * 3);
+
+ for (j = 0; j < spaces; j++) fprintf(stderr, " ");
+ }
+ if ((i % wid == wid - 1) || (i == size - 1))
+ fprintf(stderr, " %.*s\n", (i % wid) + 1, ascii);
+ }
+ print_separator((wid * 4) + (wid / grp) + 12);
+}
--
2.29.2