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authorMichael Widenius <monty@askmonty.org>2013-03-26 00:03:13 +0200
committerMichael Widenius <monty@askmonty.org>2013-03-26 00:03:13 +0200
commit068c61978e3a81836d52b8caf11e044290159ad1 (patch)
tree2cbca861ab2cebe3bd99379ca9668bb483ca0d2a /include/my_byteorder.h
parent35bc8f9f4353b64da215e52ff6f1612a8ce66f43 (diff)
downloadmariadb-git-068c61978e3a81836d52b8caf11e044290159ad1.tar.gz
Temporary commit of 10.0-merge
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diff --git a/include/my_byteorder.h b/include/my_byteorder.h
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+#ifndef MY_BYTEORDER_INCLUDED
+#define MY_BYTEORDER_INCLUDED
+
+/* Copyright (c) 2001, 2012, 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 */
+
+
+/*
+ Macro for reading 32-bit integer from network byte order (big-endian)
+ from an unaligned memory location.
+*/
+#define int4net(A) (int32) (((uint32) ((uchar) (A)[3])) | \
+ (((uint32) ((uchar) (A)[2])) << 8) | \
+ (((uint32) ((uchar) (A)[1])) << 16) | \
+ (((uint32) ((uchar) (A)[0])) << 24))
+
+/*
+ Function-like macros for reading and storing in machine independent
+ format (low byte first). There are 'korr' (assume 'corrector') variants
+ for integer types, but 'get' (assume 'getter') for floating point types.
+*/
+#if defined(__i386__) || defined(_WIN32)
+#define MY_BYTE_ORDER_ARCH_OPTIMIZED
+#include "byte_order_generic_x86.h"
+#elif defined(__x86_64__)
+#include "byte_order_generic_x86_64.h"
+#else
+#include "byte_order_generic.h"
+#endif
+
+/*
+ Function-like macros for reading and storing in machine format from/to
+ short/long to/from some place in memory V should be a variable (not on
+ a register) and M a pointer to byte.
+*/
+#ifdef WORDS_BIGENDIAN
+#include "big_endian.h"
+#else
+#include "little_endian.h"
+#endif
+
+#endif /* MY_BYTEORDER_INCLUDED */