/**************************************************************************** * include/nuttx/compiler.h * * Copyright (C) 2007-2009, 2012-2013, 2015 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 NuttX 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 __INCLUDE_NUTTX_COMPILER_H #define __INCLUDE_NUTTX_COMPILER_H /**************************************************************************** * Included Files ****************************************************************************/ /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* GCC-specific definitions *************************************************/ #ifdef __GNUC__ /* Pre-processor */ # define CONFIG_CPP_HAVE_VARARGS 1 /* Supports variable argument macros */ # define CONFIG_CPP_HAVE_WARNING 1 /* Supports #warning */ /* Intriniscs */ # define CONFIG_HAVE_FUNCTIONNAME 1 /* Has __FUNCTION__ */ # define CONFIG_HAVE_FILENAME 1 /* Has __FILE__ */ /* Indicate that a local variable is not used */ # define UNUSED(a) ((void)(a)) /* Attributes * * 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 farcall_function attribute informs GCC that is should use long calls * (even though -mlong-calls does not appear in the compilation options) */ # define farcall_function __attribute__ ((long_call)) /* 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 /* The naked attribute informs GCC that the programmer will take care of * the function prolog and epilog. */ # define naked_function __attribute__ ((naked,no_instrument_function)) /* The inline_function attribute informs GCC that the function should always * be inlined, regardless of the level of optimization. The noinline_function * indicates that the function should never be inlined. */ # define inline_function __attribute__ ((always_inline,no_instrument_function)) # define noinline_function __attribute__ ((noinline)) /* GCC has does not use storage classes to qualify addressing */ # define FAR # define NEAR # define DSEG # define CODE /* Handle cases where sizeof(int) is 16-bits, sizeof(long) is 32-bits, and * pointers are 16-bits. */ #if defined(__m32c__) /* Select the small, 16-bit addressing model */ # define CONFIG_SMALL_MEMORY 1 /* Long and int are not the same size */ # define CONFIG_LONG_IS_NOT_INT 1 /* Pointers and int are the same size */ # undef CONFIG_PTR_IS_NOT_INT #elif defined(__AVR__) /* Select the small, 16-bit addressing model */ # define CONFIG_SMALL_MEMORY 1 /* Long and int are not the same size */ # define CONFIG_LONG_IS_NOT_INT 1 /* Pointers and int are the same size */ # undef CONFIG_PTR_IS_NOT_INT /* Uses a 32-bit FAR pointer only from accessing data outside of the 16-bit * data space. */ # define CONFIG_HAVE_FARPOINTER 1 #elif defined(__mc68hc1x__) /* Select the small, 16-bit addressing model */ # define CONFIG_SMALL_MEMORY 1 /* Normally, mc68hc1x code is compiled with the -mshort option * which results in a 16-bit integer. If -mnoshort is defined * then an integer is 32-bits. GCC will defined __INT__ accordingly: */ # if __INT__ == 16 /* int is 16-bits, long is 32-bits */ # define CONFIG_LONG_IS_NOT_INT 1 /* Pointers and int are the same size (16-bits) */ # undef CONFIG_PTR_IS_NOT_INT #else /* int and long are both 32-bits */ # undef CONFIG_LONG_IS_NOT_INT /* Pointers and int are NOT the same size */ # define CONFIG_PTR_IS_NOT_INT 1 #endif #else /* Select the large, 32-bit addressing model */ # undef CONFIG_SMALL_MEMORY /* Long and int are (probably) the same size (32-bits) */ # undef CONFIG_LONG_IS_NOT_INT /* Pointers and int are the same size (32-bits) */ # undef CONFIG_PTR_IS_NOT_INT #endif /* GCC supports inlined functions */ # define CONFIG_HAVE_INLINE 1 /* GCC supports both types double and long long */ # define CONFIG_HAVE_LONG_LONG 1 # define CONFIG_HAVE_FLOAT 1 # define CONFIG_HAVE_DOUBLE 1 # define CONFIG_HAVE_LONG_DOUBLE 1 /* Structures and unions can be assigned and passed as values */ # define CONFIG_CAN_PASS_STRUCTS 1 /* SDCC-specific definitions ************************************************/ #elif defined(SDCC) /* Pre-processor */ # define CONFIG_CPP_HAVE_VARARGS 1 /* Supports variable argument macros */ # define CONFIG_CPP_HAVE_WARNING 1 /* Supports #warning */ /* Intriniscs */ # define CONFIG_HAVE_FUNCTIONNAME 1 /* Has __FUNCTION__ */ # define CONFIG_HAVE_FILENAME 1 /* Has __FILE__ */ /* Pragmas * * Disable warnings for unused function arguments */ # pragma disable_warning 85 /* Attributes * * SDCC does not support weak symbols */ # undef CONFIG_HAVE_WEAKFUNCTIONS # define weak_alias(name, aliasname) # define weak_function # define weak_const_function # define restrict /* REVISIT */ /* SDCC does not support the noreturn or packed attributes */ # define noreturn_function # define packed_struct /* REVISIT: */ # define farcall_function /* SDCC does support "naked" functions */ # define naked_function __naked /* SDCC does not support forced inlining. */ # define inline_function # define noinline_function /* 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. */ #if defined(__SDCC_z80) || defined(__SDCC_z180) || defined(__SDCC_gbz80) # define FAR # define NEAR # define CODE # define DSEG #else # define FAR __xdata # define NEAR __data # define CODE __code # if defined(SDCC_MODEL_SMALL) # define DSEG __data # else # define DSEG __xdata # endif #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 # define CONFIG_HAVE_FLOAT 1 # undef CONFIG_HAVE_DOUBLE # undef CONFIG_HAVE_LONG_DOUBLE /* Structures and unions cannot be passed as values or used * in assignments. */ # undef CONFIG_CAN_PASS_STRUCTS /* Zilog-specific definitions ***********************************************/ #elif defined(__ZILOG__) /* At present, only the following Zilog compilers are recognized */ # if !defined(__ZNEO__) && !defined(__EZ8__) && !defined(__EZ80__) # warning "Unrecognized Zilog compiler" # endif /* Pre-processor */ # undef CONFIG_CPP_HAVE_VARARGS /* No variable argument macros */ # undef CONFIG_CPP_HAVE_WARNING /* Does not support #warning */ /* Intrinsics */ # define CONFIG_HAVE_FUNCTIONNAME 1 /* Has __FUNCTION__ */ # define CONFIG_HAVE_FILENAME 1 /* Has __FILE__ */ /* Attributes * * The Zilog compiler does not support weak symbols */ # undef CONFIG_HAVE_WEAKFUNCTIONS # define weak_alias(name, aliasname) # define weak_function # define weak_const_function # define restrict /* The Zilog compiler does not support the noreturn, packed, naked attributes */ # define noreturn_function # define packed_struct # define naked_function # define inline_function # define noinline_function /* REVISIT: */ # define farcall_function /* The Zilog compiler does not support the reentrant attribute */ # define reentrant_function /* Addressing. * * Z16F ZNEO: Far is 24-bits; near is 16-bits of address. * The supported model is (1) all code on ROM, and (2) all data * and stacks in external (far) RAM. * Z8Encore!: Far is 16-bits; near is 8-bits of address. * The supported model is (1) all code on ROM, and (2) all data * and stacks in internal (far) RAM. * Z8Acclaim: In Z80 mode, all pointers are 16-bits. In ADL mode, all pointers * are 24 bits. */ # if defined(__ZNEO__) # define FAR _Far # define NEAR _Near # define DSEG _Far # define CODE _Erom # undef CONFIG_SMALL_MEMORY /* Select the large, 32-bit addressing model */ # undef CONFIG_LONG_IS_NOT_INT /* Long and int are the same size */ # undef CONFIG_PTR_IS_NOT_INT /* FAR pointers and int are the same size */ # elif defined(__EZ8__) # define FAR far # define NEAR near # define DSEG far # define CODE rom # define CONFIG_SMALL_MEMORY 1 /* Select small, 16-bit address model */ # define CONFIG_LONG_IS_NOT_INT 1 /* Long and int are not the same size */ # undef CONFIG_PTR_IS_NOT_INT /* FAR pointers and int are the same size */ # elif defined(__EZ80__) # define FAR # define NEAR # define DSEG # define CODE # undef CONFIG_SMALL_MEMORY /* Select the large, 32-bit addressing model */ # define CONFIG_LONG_IS_NOT_INT 1 /* Long and int are not the same size */ # ifdef CONFIG_EZ80_Z80MODE # define CONFIG_PTR_IS_NOT_INT 1 /* Pointers and int are not the same size */ # else # undef CONFIG_PTR_IS_NOT_INT /* Pointers and int are the same size */ # endif # endif /* The Zilog compiler does not support inline functions */ # undef CONFIG_HAVE_INLINE # define inline /* Older Zilog compilers support both types double and long long, but the size * is 32-bits (same as long and single precision) so it is safer to say that * they are not supported. Later versions are more ANSII compliant and * simply do not support long long or double. */ # undef CONFIG_HAVE_LONG_LONG # define CONFIG_HAVE_FLOAT 1 # undef CONFIG_HAVE_DOUBLE # undef CONFIG_HAVE_LONG_DOUBLE /* Structures and unions can be assigned and passed as values */ # define CONFIG_CAN_PASS_STRUCTS 1 /* Unknown compiler *********************************************************/ #else # undef CONFIG_CPP_HAVE_VARARGS # undef CONFIG_CPP_HAVE_WARNING # undef CONFIG_HAVE_FUNCTIONNAME # undef CONFIG_HAVE_FILENAME # undef CONFIG_HAVE_WEAKFUNCTIONS # define weak_alias(name, aliasname) # define weak_function # define weak_const_function # define restrict # define noreturn_function # define farcall_function # define packed_struct # define reentrant_function # define naked_function # define inline_function # define noinline_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 1 # undef CONFIG_HAVE_LONG_LONG # define CONFIG_HAVE_FLOAT 1 # undef CONFIG_HAVE_DOUBLE # undef CONFIG_HAVE_LONG_DOUBLE # undef CONFIG_CAN_PASS_STRUCTS #endif /**************************************************************************** * Public Function Prototypes ****************************************************************************/ /**************************************************************************** * Public Function Prototypes ****************************************************************************/ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif #undef EXTERN #ifdef __cplusplus } #endif #endif /* __INCLUDE_NUTTX_COMPILER_H */