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1 files changed, 57 insertions, 0 deletions

diff --git a/lib/utils.c b/lib/utils.c
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+
+/*
+ *  Copyright (C) 2015 by Intel Corporation, All Rights Reserved.
+ * 
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - 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.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER 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.
+ *
+ *  utils.c -- Platform-dependent run-time operations.
+ *
+ */
+
+#include "utils.h"
+
+#include <string.h>
+
+uint32_t  copy (uint8_t *to,
+    uint32_t to_len,
+    const uint8_t *from,
+    uint32_t from_len) {
+
+  if (from_len <= to_len) {
+    (void) memcpy (to, from, from_len);
+    return from_len;
+  } else {
+    return 0;
+  }
+}
+
+void set (uint8_t *to, uint8_t val, uint32_t len) {
+  (void) memset (to, val, len);
+}
+
+uint8_t double_byte (uint8_t a) {
+  return (a & 0x80) ? ((a << 1) ^ 0x1b) : (a << 1);
+}