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