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NetBSD/gnu/dist/sim/ppc/sim-endian.h

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/* This file is part of the program psim.
Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _SIM_ENDIAN_H_
#define _SIM_ENDIAN_H_
/* C byte conversion functions */
INLINE_SIM_ENDIAN(unsigned_1) endian_h2t_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_h2t_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_h2t_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_h2t_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_1) endian_t2h_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_t2h_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_t2h_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_t2h_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_1) swap_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) swap_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) swap_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) swap_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_1) endian_h2be_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_h2be_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_h2be_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_h2be_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_1) endian_be2h_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_be2h_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_be2h_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_be2h_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_1) endian_h2le_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_h2le_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_h2le_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_h2le_8(unsigned_8 x);
INLINE_SIM_ENDIAN(unsigned_1) endian_le2h_1(unsigned_1 x);
INLINE_SIM_ENDIAN(unsigned_2) endian_le2h_2(unsigned_2 x);
INLINE_SIM_ENDIAN(unsigned_4) endian_le2h_4(unsigned_4 x);
INLINE_SIM_ENDIAN(unsigned_8) endian_le2h_8(unsigned_8 x);
/* Host dependant:
The CPP below defines information about the compilation host. In
particular it defines the macro's:
WITH_HOST_BYTE_ORDER The byte order of the host. Could
be any of LITTLE_ENDIAN, BIG_ENDIAN
or 0 (unknown). Those macro's also
need to be defined.
*/
/* NetBSD:
NetBSD is easy, everything you could ever want is in a header file
(well almost :-) */
#if defined(__NetBSD__)
# include <machine/endian.h>
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER BYTE_ORDER
# endif
# if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
# error "host endian incorrectly configured, check config.h"
# endif
#endif
/* Linux is similarly easy. */
#if defined(__linux__)
# include <endian.h>
# include <asm/byteorder.h>
# if defined(__LITTLE_ENDIAN) && !defined(LITTLE_ENDIAN)
# define LITTLE_ENDIAN __LITTLE_ENDIAN
# endif
# if defined(__BIG_ENDIAN) && !defined(BIG_ENDIAN)
# define BIG_ENDIAN __BIG_ENDIAN
# endif
# if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
# define BYTE_ORDER __BYTE_ORDER
# endif
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER BYTE_ORDER
# endif
# if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
# error "host endian incorrectly configured, check config.h"
# endif
#endif
/* INSERT HERE - hosts that have available LITTLE_ENDIAN and
BIG_ENDIAN macro's */
/* Some hosts don't define LITTLE_ENDIAN or BIG_ENDIAN, help them out */
#ifndef LITTLE_ENDIAN
#define LITTLE_ENDIAN 1234
#endif
#ifndef BIG_ENDIAN
#define BIG_ENDIAN 4321
#endif
/* SunOS on SPARC:
Big endian last time I looked */
#if defined(sparc) || defined(__sparc__)
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER BIG_ENDIAN
# endif
# if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
# error "sun was big endian last time I looked ..."
# endif
#endif
/* Random x86
Little endian last time I looked */
#if defined(i386) || defined(i486) || defined(i586) || defined (i686) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined (__i686__)
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
# endif
# if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
# error "x86 was little endian last time I looked ..."
# endif
#endif
#if (defined (__i486__) || defined (__i586__) || defined (__i686__)) && defined(__GNUC__) && WITH_BSWAP
#undef htonl
#undef ntohl
#define htonl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
#define ntohl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
#endif
/* Power or PowerPC running AIX */
#if defined(_POWER) && defined(_AIX)
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER BIG_ENDIAN
# endif
# if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
# error "Power/PowerPC AIX was big endian last time I looked ..."
# endif
#endif
/* Solaris running PowerPC */
#if defined(__PPC) && defined(__sun__)
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
# endif
# if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
# error "Solaris on PowerPCs was little endian last time I looked ..."
# endif
#endif
/* HP/PA */
#if defined(__hppa__)
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER BIG_ENDIAN
# endif
# if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
# error "HP/PA was big endian last time I looked ..."
# endif
#endif
/* Big endian MIPS */
#if defined(__MIPSEB__)
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER BIG_ENDIAN
# endif
# if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
# error "MIPSEB was big endian last time I looked ..."
# endif
#endif
/* Little endian MIPS */
#if defined(__MIPSEL__)
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
# endif
# if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
# error "MIPSEL was little endian last time I looked ..."
# endif
#endif
/* Windows NT */
#if defined(__WIN32__)
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
# endif
# if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
# error "Windows NT was little endian last time I looked ..."
# endif
#endif
/* Alpha running DEC unix */
#if defined(__osf__) && defined(__alpha__)
# if (WITH_HOST_BYTE_ORDER == 0)
# undef WITH_HOST_BYTE_ORDER
# define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
# endif
# if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
# error "AXP running DEC unix was little endian last time I looked ..."
# endif
#endif
/* INSERT HERE - additional hosts that do not have LITTLE_ENDIAN and
BIG_ENDIAN definitions available. */
/* SWAP */
#define SWAP_1(X) swap_1(X)
#define SWAP_2(X) swap_2(X)
#define SWAP_4(X) swap_4(X)
#define SWAP_8(X) swap_8(X)
/* HOST to BE */
#define H2BE_1(X) endian_h2be_1(X)
#define H2BE_2(X) endian_h2be_2(X)
#define H2BE_4(X) endian_h2be_4(X)
#define H2BE_8(X) endian_h2be_8(X)
#define BE2H_1(X) endian_be2h_1(X)
#define BE2H_2(X) endian_be2h_2(X)
#define BE2H_4(X) endian_be2h_4(X)
#define BE2H_8(X) endian_be2h_8(X)
/* HOST to LE */
#define H2LE_1(X) endian_h2le_1(X)
#define H2LE_2(X) endian_h2le_2(X)
#define H2LE_4(X) endian_h2le_4(X)
#define H2LE_8(X) endian_h2le_8(X)
#define LE2H_1(X) endian_le2h_1(X)
#define LE2H_2(X) endian_le2h_2(X)
#define LE2H_4(X) endian_le2h_4(X)
#define LE2H_8(X) endian_le2h_8(X)
/* HOST to TARGET */
#define H2T_1(X) endian_h2t_1(X)
#define H2T_2(X) endian_h2t_2(X)
#define H2T_4(X) endian_h2t_4(X)
#define H2T_8(X) endian_h2t_8(X)
#define T2H_1(X) endian_t2h_1(X)
#define T2H_2(X) endian_t2h_2(X)
#define T2H_4(X) endian_t2h_4(X)
#define T2H_8(X) endian_t2h_8(X)
/* CONVERT IN PLACE
These macros, given an argument of unknown size, swap its value in
place if a host/target conversion is required. */
#define H2T(VARIABLE) \
do { \
switch (sizeof(VARIABLE)) { \
case 1: VARIABLE = H2T_1(VARIABLE); break; \
case 2: VARIABLE = H2T_2(VARIABLE); break; \
case 4: VARIABLE = H2T_4(VARIABLE); break; \
case 8: VARIABLE = H2T_8(VARIABLE); break; \
} \
} while (0)
#define T2H(VARIABLE) \
do { \
switch (sizeof(VARIABLE)) { \
case 1: VARIABLE = T2H_1(VARIABLE); break; \
case 2: VARIABLE = T2H_2(VARIABLE); break; \
case 4: VARIABLE = T2H_4(VARIABLE); break; \
case 8: VARIABLE = T2H_8(VARIABLE); break; \
} \
} while (0)
#define SWAP(VARIABLE) \
do { \
switch (sizeof(VARIABLE)) { \
case 1: VARIABLE = SWAP_1(VARIABLE); break; \
case 2: VARIABLE = SWAP_2(VARIABLE); break; \
case 4: VARIABLE = SWAP_4(VARIABLE); break; \
case 8: VARIABLE = SWAP_8(VARIABLE); break; \
} \
} while (0)
#define H2BE(VARIABLE) \
do { \
switch (sizeof(VARIABLE)) { \
case 1: VARIABLE = H2BE_1(VARIABLE); break; \
case 2: VARIABLE = H2BE_2(VARIABLE); break; \
case 4: VARIABLE = H2BE_4(VARIABLE); break; \
case 8: VARIABLE = H2BE_8(VARIABLE); break; \
} \
} while (0)
#define BE2H(VARIABLE) \
do { \
switch (sizeof(VARIABLE)) { \
case 1: VARIABLE = BE2H_1(VARIABLE); break; \
case 2: VARIABLE = BE2H_2(VARIABLE); break; \
case 4: VARIABLE = BE2H_4(VARIABLE); break; \
case 8: VARIABLE = BE2H_8(VARIABLE); break; \
} \
} while (0)
#define H2LE(VARIABLE) \
do { \
switch (sizeof(VARIABLE)) { \
case 1: VARIABLE = H2LE_1(VARIABLE); break; \
case 2: VARIABLE = H2LE_2(VARIABLE); break; \
case 4: VARIABLE = H2LE_4(VARIABLE); break; \
case 8: VARIABLE = H2LE_8(VARIABLE); break; \
} \
} while (0)
#define LE2H(VARIABLE) \
do { \
switch (sizeof(VARIABLE)) { \
case 1: VARIABLE = LE2H_1(VARIABLE); break; \
case 2: VARIABLE = LE2H_2(VARIABLE); break; \
case 4: VARIABLE = LE2H_4(VARIABLE); break; \
case 8: VARIABLE = LE2H_8(VARIABLE); break; \
} \
} while (0)
/* TARGET WORD:
Byte swap a quantity the size of the targets word */
#if (WITH_TARGET_WORD_BITSIZE == 64)
#define H2T_word(X) H2T_8(X)
#define T2H_word(X) T2H_8(X)
#define H2BE_word(X) H2BE_8(X)
#define BE2H_word(X) BE2H_8(X)
#define H2LE_word(X) H2LE_8(X)
#define LE2H_word(X) LE2H_8(X)
#define SWAP_word(X) SWAP_8(X)
#endif
#if (WITH_TARGET_WORD_BITSIZE == 32)
#define H2T_word(X) H2T_4(X)
#define T2H_word(X) T2H_4(X)
#define H2BE_word(X) H2BE_4(X)
#define BE2H_word(X) BE2H_4(X)
#define H2LE_word(X) H2LE_4(X)
#define LE2H_word(X) LE2H_4(X)
#define SWAP_word(X) SWAP_4(X)
#endif
/* TARGET CELL:
Byte swap a quantity the size of the targets IEEE 1275 memory cell */
#define H2T_cell(X) H2T_4(X)
#define T2H_cell(X) T2H_4(X)
#define H2BE_cell(X) H2BE_4(X)
#define BE2H_cell(X) BE2H_4(X)
#define H2LE_cell(X) H2LE_4(X)
#define LE2H_cell(X) LE2H_4(X)
#define SWAP_cell(X) SWAP_4(X)
#if (SIM_ENDIAN_INLINE & INCLUDE_MODULE)
# include "sim-endian.c"
#endif
#endif /* _SIM_ENDIAN_H_ */
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