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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [tools/] [src/] [infra/] [basetype.h] - Rev 403
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#ifndef CYGONCE_HAL_BASETYPE_H # define CYGONCE_HAL_BASETYPE_H //====================================================================== // // basetype.h // // HAL emulation for the host-side infrastructure. // //====================================================================== //####COPYRIGHTBEGIN#### // // ---------------------------------------------------------------------------- // Copyright (C) 1998, 1999, 2000 Red Hat, Inc. // // This file is part of the eCos host tools. // // 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. // // ---------------------------------------------------------------------------- // //####COPYRIGHTEND#### //====================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): bartv // Contact(s): bartv // Date: 1998/07/13 // Version: 0.01 // //####DESCRIPTIONEND#### //====================================================================== // The purpose of this header file is to replicate the functionality // provided by <cyg/hal/basetype.h> on the target side. Essentially // this file has to define endianness. Optionally it can also define // the correct data types for e.g. cyg_count32 etc. // // On the host side portability is achieved by means of autoconf and // feature tests, as opposed to re-implementing the HAL for each // platform. In particular there will be a generated header file // <pkgconf/hostinfra.h> which gets filled in during the configure // process. // // It has been decided that the host side should use exactly the same // infrastructure header files as the target side (although extra // functionality may be defined in these header files where // appropriate). This means that the host side needs to provide // <cyg/hal/basetype.h>, even though it does not contain a HAL. // // This implementation of <cyg/hal/basetype.h> reads in the // configuration header generated by the configure script and adapts // this information into whatever is required by // <cyg/infra/cyg_type.h>. #ifndef CYGONCE_PKGCONF_INFRA_H # include <pkgconf/infra.h> #endif // The autoconf test for endianness will result in a #define for // LITTLE_ENDIAN_HOST on appropriate platforms. This needs to be // converted into a definition of CYG_BYTEORDER as per the target-side // HAL headers. #ifdef WORDS_BIGENDIAN # define CYG_BYTEORDER CYG_MSBFIRST #else # define CYG_BYTEORDER CYG_LSBFIRST #endif // The default definitions for cyg_halint8/16/32 and cyg_halcount8/16/32 // should be fine (although eventually we may come across a platform // where int's are 64 bit). 64 bit arithmetic is a bit more of a problem. // on the majority of systems so there is an autoconf test which will // generate appropriate #define's for cyg_halint64 and cyg_halcount64, // which means this header file does not to do anything more. // cyg_halbool and cyg_halatomic should both be ok. // Any symbols defined in <cyg/infra/config.h> which have been processed // here should no longer be of any interest, and in the interests of // reducing name space pollution they get undef'ed here. #undef WORDS_BIGENDIAN #endif // CYGONCE_HAL_BASETYPE_H // End of basetype.h
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