From 4c87a1868835d05f1cadae7b8ad6a7c95d9d9c0e Mon Sep 17 00:00:00 2001
From: Ross Philipson <philipsonr@ainfosec.com>
Date: Tue, 14 Mar 2017 15:40:33 -0400
Subject: Initial commit of EFI TBOOT work from internal project.

Signed-off-by: Ross Philipson <philipsonr@ainfosec.com>
---
 tboot/include/misc.h | 95 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 tboot/include/misc.h

(limited to 'tboot/include/misc.h')

diff --git a/tboot/include/misc.h b/tboot/include/misc.h
new file mode 100644
index 0000000..6c118c0
--- /dev/null
+++ b/tboot/include/misc.h
@@ -0,0 +1,95 @@
+/*
+ * misc.h:  miscellaneous support fns
+ *
+ * Copyright (c) 2010, 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 the 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.
+ *
+ */
+
+#ifndef __MISC_H__
+#define __MISC_H__
+
+void print_hex(const char * buf, const void * prtptr, size_t size);
+
+void print_system_values(void);
+
+void print_test_chars(void);
+
+bool test_virt_to_phys(uint64_t vaddr);
+void dump_page_tables(void);
+
+void delay(int millisecs);
+
+/*
+ *  These three "plus overflow" functions take a "x" value
+ *    and add the "y" value to it and if the two values are
+ *    greater than the size of the variable type, they will
+ *    overflow the type and end up with a smaller value and
+ *    return TRUE - that they did overflow.  i.e.
+ *    x + y <= variable type maximum.
+ */
+static inline bool plus_overflow_u64(uint64_t x, uint64_t y)
+{
+    return ((((uint64_t)(~0)) - x) < y);
+}
+
+static inline bool plus_overflow_u32(uint32_t x, uint32_t y)
+{
+    return ((((uint32_t)(~0)) - x) < y);
+}
+
+/*
+ * This checks to see if two numbers multiplied together are larger
+ *   than the type that they are.  Returns TRUE if OVERFLOWING.
+ *   If the first parameter "x" is greater than zero and
+ *   if that is true, that the largest possible value 0xFFFFFFFF / "x"
+ *   is less than the second parameter "y".  If "y" is zero then
+ *   it will also fail because no unsigned number is less than zero.
+ */
+static inline bool multiply_overflow_u32(uint32_t x, uint32_t y)
+{
+    return (x > 0) ? ((((uint32_t)(~0))/x) < y) : false;
+}
+
+#define ARRAY_SIZE(a)    (sizeof(a) / sizeof(a[0]))
+
+#define AP_WAKE_TRIGGER_DEF   0xffffffff
+
+#endif    /* __MISC_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
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