From 7ec396d27078c164b10c6cf2552f630d518b7498 Mon Sep 17 00:00:00 2001 From: Andrew Cagney Date: Tue, 15 Apr 1997 08:54:01 +0000 Subject: Get the BIT/MASK/ROT/... macros to work with any 32/64/MSB0/MSBn target. --- sim/common/sim-config.h | 197 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 197 insertions(+) (limited to 'sim/common/sim-config.h') diff --git a/sim/common/sim-config.h b/sim/common/sim-config.h index c7e72b6..1205920 100644 --- a/sim/common/sim-config.h +++ b/sim/common/sim-config.h @@ -22,6 +22,189 @@ #ifndef _PSIM_CONFIG_H_ #define _PSIM_CONFIG_H_ +/* 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 +# 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 +# include +# 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. */ + /* endianness of the host/target: @@ -110,6 +293,20 @@ extern int current_target_byte_order; +/* Most significant bit of target: + + Set this according to your target's bit numbering convention. For + the PowerPC it is zero, for many other targets it is 31 or 63. + + For targets that can both have either 32 or 64 bit words and number + MSB as 31, 63. Define this to be (WITH_TARGET_WORD_BITSIZE - 1) */ + +#ifndef WITH_TARGET_WORD_MSB +#define WITH_TARGET_WORD_MSB 0 +#endif + + + /* Program environment: Three environments are available - UEA (user), VEA (virtual) and -- cgit v1.1