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Diffstat (limited to 'sim/ppc/sim-endian.h')
| -rw-r--r-- | sim/ppc/sim-endian.h | 315 |
1 files changed, 0 insertions, 315 deletions
diff --git a/sim/ppc/sim-endian.h b/sim/ppc/sim-endian.h deleted file mode 100644 index c19691a..0000000 --- a/sim/ppc/sim-endian.h +++ /dev/null @@ -1,315 +0,0 @@ -/* 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_ - -#ifndef INLINE_SIM_ENDIAN -#define INLINE_SIM_ENDIAN -#endif - - -/* 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); - - -/* 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. - - WITH_NTOH Network byte order macros defined. - Possible value is 32 or (maybe one - day 64 because some 64bit network - byte order macro is defined. - */ - - -/* NetBSD: - - NetBSD is easy, everything you could ever want is in a header file - (well almost :-) */ - -#if defined(__NetBSD__) -# include <machine/endian.h> -# define WITH_NTOH 32 /* what about alpha? */ -# 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 !defined(__alpha__) -# define WITH_NTOH 32 /* what about alpha? */ -# 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(__i386__) || defined(__i486__) || defined(__i586__) -# 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(__GNUC__) && WITH_BSWAP && WITH_NTOH -#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 - - -/* Configure defines WORDS_BIGENDIAN if the host is big endian. */ - -#if (WITH_HOST_BYTE_ORDER == 0) -# undef WITH_HOST_BYTE_ORDER -# ifdef WORDS_BIGENDIAN -# define WITH_HOST_BYTE_ORDER BIG_ENDIAN -# else -# define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN -# endif -#endif - -/* SWAP: - - Some times a swap must always be performed, select the most - effecient method to swap a collection of bytes. - - HOST BE sw - HOST LE sw/ntoh - HOST ?? sw - - */ - -#if (WITH_HOST_BYTE_ORDER \ - && WITH_NTOH \ - && WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN) -#define SWAP_1(X) (X) -#define SWAP_2(X) ntohs(X) -#define SWAP_4(X) ntohl(X) -#define SWAP_8(X) swap_8(X) -#else -#define SWAP_1(X) (X) -#define SWAP_2(X) swap_2(X) -#define SWAP_4(X) swap_4(X) -#define SWAP_8(X) swap_8(X) -#endif - - -/* CONVERSION: - - Convert between host and target byte orders by the most efficient - method known (if needed at all) - - TARG BE TARG LE TARG ?? - HOST BE ok swap swap - HOST LE htohl ok ok|ntohl - HOST ?? ntohl swap swap - - */ - - -/* FUNCTIONS: - - Returns the value swapped according to the host/target byte order */ - -/* no need to swap */ -#if (WITH_HOST_BYTE_ORDER \ - && WITH_TARGET_BYTE_ORDER \ - && WITH_HOST_BYTE_ORDER == WITH_TARGET_BYTE_ORDER ) -#define H2T_1(X) (X) -#define H2T_2(X) (X) -#define H2T_4(X) (X) -#define H2T_8(X) (X) -#define T2H_1(X) (X) -#define T2H_2(X) (X) -#define T2H_4(X) (X) -#define T2H_8(X) (X) -#endif - -/* have ntoh and big endian target */ -#if (WITH_TARGET_BYTE_ORDER == BIG_ENDIAN \ - && WITH_HOST_BYTE_ORDER != BIG_ENDIAN \ - && WITH_NTOH) -#define H2T_8(X) endian_h2t_8(X) -#define H2T_4(X) htonl(X) -#define H2T_2(X) htons(X) -#define H2T_1(X) (X) -#define T2H_8(X) endian_t2h_8(X) -#define T2H_4(X) htonl(X) -#define T2H_2(X) htons(X) -#define T2H_1(X) (X) -#endif - -/* have ntoh, little host and unknown target */ -#if (WITH_HOST_BYTE_ORDER == LITTLE_ENDIAN \ - && WITH_TARGET_BYTE_ORDER == 0 \ - && WITH_NTOH) -#define H2T_8(X) (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER \ - ? (X) : endian_h2t_8(X)) -#define H2T_4(X) (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER \ - ? (X) : htonl(X)) -#define H2T_2(X) (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER \ - ? (X) : htons(X)) -#define H2T_1(X) (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER \ - ? (X) : (X)) -#define T2H_8(X) (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER \ - ? (X) : endian_t2h_8(X)) -#define T2H_4(X) (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER \ - ? (X) : htonl(X)) -#define T2H_2(X) (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER \ - ? (X) : htons(X)) -#define T2H_1(X) (CURRENT_TARGET_BYTE_ORDER == CURRENT_HOST_BYTE_ORDER \ - ? (X) : (X)) -#endif - -/* if all else fails use software */ -#ifndef H2T_1 -#define H2T_1(X) (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) (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) -#endif - - -/* 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) - - -/* 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) -#endif -#if (WITH_TARGET_WORD_BITSIZE == 32) -#define H2T_word(X) H2T_4(X) -#define T2H_word(X) T2H_4(X) -#endif - -#endif /* _SIM_ENDIAN_H_ */ |