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Diffstat (limited to 'include/my_byteorder.h')
-rw-r--r-- | include/my_byteorder.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/my_byteorder.h b/include/my_byteorder.h new file mode 100644 index 00000000..a70330ca --- /dev/null +++ b/include/my_byteorder.h @@ -0,0 +1,54 @@ +#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 02110-1335 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(_M_IX86)) && !defined(WITH_UBSAN) +#define MY_BYTE_ORDER_ARCH_OPTIMIZED +#include "byte_order_generic_x86.h" +#elif (defined(__x86_64__) || defined (_M_X64)) && !defined(WITH_UBSAN) +#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 */ |