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-rw-r--r--mysql/byte_order_generic_x86.h56
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diff --git a/mysql/byte_order_generic_x86.h b/mysql/byte_order_generic_x86.h
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+/* Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; version 2 of the License.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
+
+/*
+ Optimized functions for the x86 architecture (_WIN32 included).
+
+ x86 handles misaligned reads and writes just fine, so suppress
+ UBSAN warnings for these functions.
+*/
+static inline int16 sint2korr(const uchar *A) SUPPRESS_UBSAN;
+static inline int16 sint2korr(const uchar *A) { return *((int16*) A); }
+
+static inline int32 sint4korr(const uchar *A) SUPPRESS_UBSAN;
+static inline int32 sint4korr(const uchar *A) { return *((int32*) A); }
+
+static inline uint16 uint2korr(const uchar *A) SUPPRESS_UBSAN;
+static inline uint16 uint2korr(const uchar *A) { return *((uint16*) A); }
+
+static inline uint32 uint4korr(const uchar *A) SUPPRESS_UBSAN;
+static inline uint32 uint4korr(const uchar *A) { return *((uint32*) A); }
+
+static inline ulonglong uint8korr(const uchar *A) SUPPRESS_UBSAN;
+static inline ulonglong uint8korr(const uchar *A) { return *((ulonglong*) A);}
+
+static inline longlong sint8korr(const uchar *A) SUPPRESS_UBSAN;
+static inline longlong sint8korr(const uchar *A) { return *((longlong*) A); }
+
+static inline void int2store(uchar *T, uint16 A) SUPPRESS_UBSAN;
+static inline void int2store(uchar *T, uint16 A)
+{
+ *((uint16*) T)= A;
+}
+
+static inline void int4store(uchar *T, uint32 A) SUPPRESS_UBSAN;
+static inline void int4store(uchar *T, uint32 A)
+{
+ *((uint32*) T)= A;
+}
+
+static inline void int8store(uchar *T, ulonglong A) SUPPRESS_UBSAN;
+static inline void int8store(uchar *T, ulonglong A)
+{
+ *((ulonglong*) T)= A;
+}