tpm: Move tpm_tis_show_buffer to tpm_util.c

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20200121152935.649898-2-stefanb@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 25 insertions, 0 deletions

diff --git a/hw/tpm/tpm_util.c b/hw/tpm/tpm_util.c
index 62b091f0c0..c0a0f3d71f 100644
--- a/hw/tpm/tpm_util.c
+++ b/hw/tpm/tpm_util.c
@@ -350,3 +350,28 @@ void tpm_sized_buffer_reset(TPMSizedBuffer *tsb)
     tsb->buffer = NULL;
     tsb->size = 0;
 }
+
+void tpm_util_show_buffer(const unsigned char *buffer,
+                          size_t buffer_size, const char *string)
+{
+    size_t len, i;
+    char *line_buffer, *p;
+
+    len = MIN(tpm_cmd_get_size(buffer), buffer_size);
+
+    /*
+     * allocate enough room for 3 chars per buffer entry plus a
+     * newline after every 16 chars and a final null terminator.
+     */
+    line_buffer = g_malloc(len * 3 + (len / 16) + 1);
+
+    for (i = 0, p = line_buffer; i < len; i++) {
+        if (i && !(i % 16)) {
+            p += sprintf(p, "\n");
+        }
+        p += sprintf(p, "%.2X ", buffer[i]);
+    }
+    trace_tpm_util_show_buffer(string, len, line_buffer);
+
+    g_free(line_buffer);
+}