243 lines
6.4 KiB
C
243 lines
6.4 KiB
C
/************************************************************
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* compiler.h
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*
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* Copyright (C) 2007 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name Gregory Nutt nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************/
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#ifndef __COMPILER_H
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#define __COMPILER_H
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/************************************************************
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* Included Files
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************************************************************/
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/************************************************************
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* Definitions
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************************************************************/
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/* GCC-specific definitions *********************************/
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#ifdef __GNUC__
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/* GCC supports weak symbols which can be used to reduce
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* code size because unnecessary "weak" functions can be
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* excluded from the link.
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*/
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# ifndef __CYGWIN__
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# define CONFIG_HAVE_WEAKFUNCTIONS 1
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# define weak_alias(name, aliasname) \
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extern __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
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# define weak_function __attribute__ ((weak))
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# define weak_const_function __attribute__ ((weak, __const__))
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# else
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# undef CONFIG_HAVE_WEAKFUNCTIONS
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# define weak_alias(name, aliasname)
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# define weak_function
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# define weak_const_function
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#endif
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/* The noreturn attribute informs GCC that the function will
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* not return.
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*/
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# define noreturn_function __attribute__ ((noreturn))
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/* The packed attribute informs GCC that the stucture elements
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* are packed, ignoring other alignment rules.
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*/
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# define packed_struct __attribute__ ((packed))
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/* GCC does not support the reentrant attribute */
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# define reentrant_function
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/* GCC has does not use storage classes to qualify addressing */
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# define FAR
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# define NEAR
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# define DSEG
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# define CODE
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/* Select the large, 32-bit addressing model */
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# undef CONFIG_SMALL_MEMORY
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/* Long and int are (probably) the same size */
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# undef CONFIG_LONG_IS_NOT_INT
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/* Pointers and int are the same size */
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# undef CONFIG_PTR_IS_NOT_INT
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/* GCC supports inlined functions */
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# define CONFIG_HAVE_INLINE 1
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/* GCC supports both types double and long long */
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# define CONFIG_HAVE_DOUBLE 1
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# define CONFIG_HAVE_LONG_LONG 1
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/* Structures and unions can be assigned and passed as values */
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# define CONFIG_CAN_PASS_STRUCTS 1
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/* SDCC-specific definitions ********************************/
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#elif defined(SDCC)
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/* Disable warnings for unused function arguments */
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# pragma disable_warning 85
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/* SDCC does not support weak symbols */
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# undef CONFIG_HAVE_WEAKFUNCTIONS
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# define weak_alias(name, aliasname)
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# define weak_function
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# define weak_const_function
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/* SDCC does not support the noreturn or packed attributes */
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# define noreturn_function
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# define packed_struct
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/* The reentrant attribute informs SDCC that the function
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* must be reentrant. In this case, SDCC will store input
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* arguments on the stack to support reentrancy.
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*/
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# define reentrant_function __reentrant
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/* It is assumed that the system is build using the small
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* data model with storage defaulting to internal RAM.
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* The NEAR storage class can also be used to address data
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* in internal RAM; FAR can be used to address data in
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* external RAM.
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*/
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#define FAR __xdata
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#define NEAR __data
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#define CODE __code
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#if defined(SDCC_MODEL_SMALL)
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# define DSEG __data
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#else
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# define DSEG __xdata
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#endif
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/* Select small, 16-bit address model */
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# define CONFIG_SMALL_MEMORY 1
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/* Long and int are not the same size */
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# define CONFIG_LONG_IS_NOT_INT 1
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/* The generic pointer and int are not the same size
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* (for some SDCC architectures)
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*/
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#if !defined(__z80) && defined(__gbz80)
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# define CONFIG_PTR_IS_NOT_INT 1
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#endif
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/* SDCC does not support inline functions */
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# undef CONFIG_HAVE_INLINE
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# define inline
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/* SDCC does not support type long long or type double */
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# undef CONFIG_HAVE_LONG_LONG
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# undef CONFIG_HAVE_DOUBLE
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/* Structures and unions cannot be passed as values or used
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* in assignments.
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*/
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# undef CONFIG_CAN_PASS_STRUCTS
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/* Unknown compiler *****************************************/
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#else
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# undef CONFIG_HAVE_WEAKFUNCTIONS
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# define weak_alias(name, aliasname)
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# define weak_function
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# define weak_const_function
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# define noreturn_function
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# define packed_struct
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# define reentrant_function
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# define FAR
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# define NEAR
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# define DSEG
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# define CODE
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# undef CONFIG_SMALL_MEMORY
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# undef CONFIG_LONG_IS_NOT_INT
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# undef CONFIG_PTR_IS_NOT_INT
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# undef CONFIG_HAVE_INLINE
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# define inline
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# undef CONFIG_HAVE_LONG_LONG
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# undef CONFIG_HAVE_DOUBLE
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# undef CONFIG_CAN_PASS_STRUCTS
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#endif
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/************************************************************
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* Global Function Prototypes
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************************************************************/
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/************************************************************
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* Global Function Prototypes
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************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C" {
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#else
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#define EXTERN extern
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#endif
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __COMPILER_H */
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