/*!
* \file
* <!--
- * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 2003, 2004, 2005 Develer S.r.l. (http://www.develer.com/)
* Copyright 2001, 2002, 2003 Bernardo Innocenti <bernie@codewiz.org>
- * This file is part of DevLib - See devlib/README for information.
+ * This file is part of DevLib - See README.devlib for information.
* -->
*
- * \version $Id$
+ * \brief Additional support macros for compiler independance
*
+ * \version $Id$
* \author Bernardo Innocenti <bernie@develer.com>
- *
- * \brief Additional support macros for compiler independance
*/
-/*
- * $Log$
- * Revision 1.17 2004/08/24 13:32:14 bernie
- * PP_CAT(), PP_STRINGIZE(): Move back to compiler.h to break circular dependency between cpu.h/compiler.h/macros.h;
- * offsetof(), countof(): Move back to compiler.h to avoid including macros.h almost everywhere;
- * Trim CVS log;
- * Rename header guards;
- * Don't include arch_config.h in compiler.h as it's not needed there.
- *
- * Revision 1.16 2004/08/14 19:37:57 rasky
- * Merge da SC: macros.h, pool.h, BIT_CHANGE, nome dei processi, etc.
- *
- * Revision 1.15 2004/08/13 03:23:26 bernie
- * Adjust a few MSVC tweaks from older projects.
- *
- * Revision 1.14 2004/08/10 06:56:29 bernie
- * RESTRICT: New C99-like macro; STATIC_ASSERT: Fix warning for multiple invocation in one file.
- *
- * Revision 1.13 2004/08/02 20:20:29 aleph
- * Merge from project_ks
- *
- * Revision 1.12 2004/08/01 01:21:17 bernie
- * LIKELY(), UNLIKELY(): New compiler-specific macros.
- *
- * Revision 1.11 2004/07/30 14:34:10 rasky
- * Vari fix per documentazione e commenti
- * Aggiunte PP_CATn e STATIC_ASSERT
- *
- * Revision 1.10 2004/07/30 14:15:53 rasky
- * Nuovo supporto unificato per detect della CPU
- *
- * Revision 1.9 2004/07/29 22:57:09 bernie
- * vsprintf(): Remove prototype for backwards compatibility with GCC 3.4; ssize_t: Add definition for inferior compilers.
- */
+/*#*
+ *#* $Log$
+ *#* Revision 1.44 2005/03/29 06:39:59 bernie
+ *#* setjmp.h, time_t: Remove ancient retrocompatibility; Remove MSVC double to float hack.
+ *#*
+ *#* Revision 1.43 2005/03/01 23:15:12 bernie
+ *#* Remove compatibility hack.
+ *#*
+ *#* Revision 1.42 2005/02/16 20:28:46 bernie
+ *#* Move PGM macros to mware/pgm.h
+ *#*
+ *#* Revision 1.41 2005/01/22 04:19:22 bernie
+ *#* MTIME_INFINITE: New constant.
+ *#*
+ *#* Revision 1.40 2005/01/20 18:46:04 aleph
+ *#* Add progmem datatypes; PSTR() definition.
+ *#*/
#ifndef DEVLIB_COMPILER_H
#define DEVLIB_COMPILER_H
#define GNUC_PREREQ(maj, min) 0
#endif
+/* Some CW versions do not allow enabling C99 from the settings panel. */
+#if defined(__MWERKS__)
+ #pragma c99 on
+#endif
+
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
#define COMPILER_C99 1
#else
#define REGISTER shortad
#define INLINE /* unsupported */
- /* Imported from <longjmp.h>. Unfortunately, we can't just include
+ /*
+ * Imported from <longjmp.h>. Unfortunately, we can't just include
* this header because it typedefs jmp_buf to be an array of chars.
* This would allow the compiler to place the buffer on an odd address.
* The CPU _should_ be able to perform word accesses to
*/
struct _JMP_BUF
{
- void * sp; /* Stack pointer */
- void * return_addr; /* Return address */
- int lr[6]; /* 6 local registers */
+ void *sp; /* Stack pointer */
+ void *return_addr; /* Return address */
+ int lr[6]; /* 6 local registers */
};
typedef struct _JMP_BUF jmp_buf[1];
#elif defined(_MSC_VER) /* Win32 emulation support */
- #include <setjmp.h>
- #include <time.h> /* for time_t */
-
- /* FIXME: I can't remember why exactly this was needed (NdBernie) */
- #define float double
-
- /* Fake bool support */
+ /* MSVC doesn't provide <stdbool.h>. */
#ifndef __cplusplus
- #define true 1
- #define false 0
+ #define true (1==1)
+ #define false (1!=1)
typedef int bool;
#endif /* !__cplusplus */
#elif defined(__GNUC__)
+ /* Compiler features */
+ #define COMPILER_VARIADIC_MACROS 1 /* Even in C++ */
+ #define COMPILER_TYPEOF 1
+ #define COMPILER_STATEMENT_EXPRESSIONS 1
+
/* GCC attributes */
#define FORMAT(type,fmt,first) __attribute__((__format__(type, fmt, first)))
#define NORETURN __attribute__((__noreturn__))
- #define UNUSED(type,arg) __attribute__((__unused__)) type arg
+ #define UNUSED_ARG(type,arg) __attribute__((__unused__)) type arg
+ #define UNUSED_VAR(type,name) __attribute__((__unused__)) type name
+ #define USED_VAR(type,name) __attribute__((__used__)) type name
#define INLINE static inline __attribute__((__always_inline__))
- #define LIKELY(x) __builtin_expect((x), 1)
- #define UNLIKELY(x) __builtin_expect((x), 0)
- #define RESTRICT __restrict__
+ #define LIKELY(x) __builtin_expect(!!(x), 1)
+ #define UNLIKELY(x) __builtin_expect(!!(x), 0)
+ #define PURE_FUNC __attribute__((pure))
+ #define CONST_FUNC __attribute__((const))
+ #define UNUSED_FUNC __attribute__((unused))
+ #define USED_FUNC __attribute__((__used__))
+ #define RESTRICT __restrict__
+ #define MUST_CHECK __attribute__((warn_unused_result))
#if GNUC_PREREQ(3,1)
- #define DEPRECATED __attribute__((__deprecated__))
+ #define DEPRECATED __attribute__((__deprecated__))
#endif
- #if CPU_X86
-
- /* hack to avoid conflicts with system type */
- #define sigset_t system_sigset_t
+ #if CPU_AVR
#include <stddef.h>
- #include <setjmp.h>
#include <stdbool.h>
- #undef system_sigset_t
-
- #elif CPU_AVR
-
+ #else
+ /* Include some standard C89/C99 stuff */
#include <stddef.h>
#include <stdbool.h>
+ #endif
- /* Missing printf-family functions in avr-libc/stdio.h */
- #include <stdarg.h>
- #include <avr/pgmspace.h>
- int vsprintf_P(char *buf, const char * PROGMEM fmt, va_list ap);
-
- /* Support for harvard architectures */
- #ifdef _PROGMEM
- #define PGM_READ_CHAR(s) pgm_read_byte(s)
- #define PGM_FUNC(x) x ## _P
- #define PGM_ATTR PROGMEM
- #endif
-
+ #ifndef __cplusplus
+ /*
+ * Disallow some C++ keywords as identifiers in C programs,
+ * for improved portability.
+ */
+ #pragma GCC poison new delete class template typename
+ #pragma GCC poison private protected public operator
+ #pragma GCC poison friend mutable using namespace
+ #pragma GCC poison cin cout cerr clog
#endif
#elif defined(__MWERKS__) && CPU_DSP56K
+ /* Compiler features */
+ #define COMPILER_VARIADIC_MACROS 1
+ #define COMPILER_TYPEOF 1
+ #define COMPILER_STATEMENT_EXPRESSIONS 1
+
+ #define typeof __typeof__
+
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
- #include <setjmp.h>
// CodeWarrior has size_t as built-in type, but does not define this symbol.
#define _SIZE_T_DEFINED
#endif
+/* Defaults for compiler extensions. */
+
+/*!
+ * \def COMPILER_VARIADIC_MACROS
+ * Support for macros with variable arguments.
+ */
+#ifndef COMPILER_VARIADIC_MACROS
+#define COMPILER_VARIADIC_MACROS (COMPILER_C99 != 0)
+#endif
+
+/*!
+ * \def COMPILER_TYPEOF
+ * Support for macros with variable arguments.
+ */
+#ifndef COMPILER_TYPEOF
+#define COMPILER_TYPEOF 0
+#endif
+
+/*!
+ * \def COMPILER_STATEMENT_EXPRESSIONS
+ * Support for macros with variable arguments.
+ */
+#ifndef COMPILER_STATEMENT_EXPRESSIONS
+#define COMPILER_STATEMENT_EXPRESSIONS 0
+#endif
+
/* A few defaults for missing compiler features. */
#ifndef INLINE
#define INLINE static inline
#ifndef DEPRECATED
#define DEPRECATED /* nothing */
#endif
-#ifndef UNUSED
-#define UNUSED(type,arg) type arg
+#ifndef UNUSED_ARG
+#define UNUSED_ARG(type,arg) type arg
+#endif
+#define UNUSED UNUSED_ARG /* OBSOLETE */
+#ifndef UNUSED_VAR
+#define UNUSED_VAR(type,name) type name
+#endif
+#ifndef USED_VAR
+#define USED_VAR(type,name) type name
#endif
#ifndef REGISTER
#define REGISTER /* nothing */
#ifndef UNLIKELY
#define UNLIKELY(x) x
#endif
-#ifndef RESTRICT
-#define RESTRICT
+#ifndef PURE_FUNC
+#define PURE_FUNC /* nothing */
#endif
-
-/* Support for harvard architectures */
-#ifndef PSTR
-#define PSTR /* nothing */
+#ifndef CONST_FUNC
+#define CONST_FUNC /* nothing */
#endif
-#ifndef PGM_READ_CHAR
-#define PGM_READ_CHAR(s) (*(s))
+#ifndef UNUSED_FUNC
+#define UNUSED_FUNC /* nothing */
#endif
-#ifndef PGM_FUNC
-#define PGM_FUNC(x) x
+#ifndef USED_FUNC
+#define USED_FUNC /* nothing */
#endif
-#ifndef PGM_ATTR
-#define PGM_ATTR /* nothing */
+#ifndef RESTRICT
+#define RESTRICT /* nothing */
+#endif
+#ifndef MUST_CHECK
+#define MUST_CHECK /* nothing */
#endif
-
/* Misc definitions */
#ifndef NULL
/* Support for hybrid C/C++ applications. */
#ifdef __cplusplus
+ #define EXTERN_C extern "C"
#define EXTERN_C_BEGIN extern "C" {
#define EXTERN_C_END }
#else
+ #define EXTERN_C extern
#define EXTERN_C_BEGIN /* nothing */
#define EXTERN_C_END /* nothing */
#endif
-/*
- * Standard type definitions
- * These should be in <sys/types.h>, but many compilers lack them.
- */
-#if !(defined(size_t) || defined(_SIZE_T_DEFINED))
- typedef unsigned int size_t;
- typedef int ssize_t;
-#endif
-#if !(defined(_TIME_T_DEFINED) || defined(__time_t_defined))
- typedef long time_t;
-#endif /* _TIME_T_DEFINED || __time_t_defined */
-
-/*! Storage for pointers and integers */
-/* FIXME: turn this into a typedef? */
-#define IPTR void *
-
-typedef long utime_t;
-typedef unsigned char sig_t;
-typedef unsigned char sigset_t;
-typedef unsigned char page_t;
-
#if (defined(_MSC_VER) || defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__))
/*!
* \name ISO C99 fixed-size types
typedef unsigned short int uint16_t;
typedef unsigned long int uint32_t;
/* \} */
-#elif defined(__GNUC__) && defined(__AVR__)
+#elif defined(__GNUC__) && CPU_AVR
/* avr-libc is weird... */
#include <inttypes.h>
#else
#include <stdint.h>
#endif
+#if CPU_AVR_ATMEGA8
+ /*
+ * The ATmega8 has a very small Flash, so we can't afford
+ * to link in support routines for 32bit integer arithmetic.
+ */
+ typedef int16_t mtime_t; /*!< Type for time expressed in milliseconds. */
+ typedef int16_t utime_t; /*!< Type for time expressed in microseconds. */
+ #define SIZEOF_MTIME_T (16 / CPU_BITS_PER_CHAR)
+ #define SIZEOF_UTIME_T (16 / CPU_BITS_PER_CHAR)
+ #define MTIME_INFINITE 0x7FFFL
+#else
+ typedef int32_t mtime_t; /*!< Type for time expressed in milliseconds. */
+ typedef int32_t utime_t; /*!< Type for time expressed in microseconds. */
+ #define SIZEOF_MTIME_T (32 / CPU_BITS_PER_CHAR)
+ #define SIZEOF_UTIME_T (32 / CPU_BITS_PER_CHAR)
+ #define MTIME_INFINITE 0x7FFFFFFFL
+#endif
+
+/*! Bulk storage large enough for both pointers or integers. */
+typedef void * iptr_t;
+typedef const void * const_iptr_t;
+
+typedef unsigned char sig_t; /*!< Type for signal bits. */
+typedef unsigned char sigmask_t; /*!< Type for signal masks. */
+typedef unsigned char page_t; /*!< Type for banked memory pages. */
+
+
+/*!
+ * \name Standard type definitions.
+ *
+ * These should be in <sys/types.h> or <stddef.h>, but many compilers
+ * and C libraries lack them.
+ *
+ * We check for some common definitions to avoid redefinitions:
+ *
+ * glibc, avr-libc: _SIZE_T_DEFINED
+ * Darwin libc: _BSD_SIZE_T_DEFINED_
+ *
+ * \{
+ */
+#if !(defined(size_t) || defined(_SIZE_T_DEFINED) || defined(_BSD_SIZE_T_DEFINED_))
+ #if CPU_REG_BITS > 32
+ /* 64bit. */
+ typedef unsigned long size_t;
+ typedef long ssize_t;
+ #else
+ /* 32bit or 16bit. */
+ typedef unsigned int size_t;
+ typedef int ssize_t;
+ #endif
+#endif
+/*\}*/
+
+
/*!
* \name Types for hardware registers.
*
/* Quasi-ANSI macros */
#ifndef offsetof
/*!
- * Return the byte offset of the member \a m in struct \a s
+ * Return the byte offset of the member \a m in struct \a s.
*
* \note This macro should be defined in "stddef.h" and is sometimes
* compiler-specific (g++ has a builtin for it).
#endif
#ifndef countof
/*!
- * Count the number of elements in the static array \a a
+ * Count the number of elements in the static array \a a.
*
- * \note This macro is non-standard, but implmenents a very common idiom
+ * \note This macro is non-standard, but implements a very common idiom
*/
#define countof(a) (sizeof(a) / sizeof(*(a)))
#endif
+/*! Issue a compilation error if the \a condition is false */
+#define STATIC_ASSERT(condition) \
+ UNUSED_VAR(extern char,PP_CAT(CT_ASSERT___, __LINE__)[(condition) ? 1 : -1])
+
#endif /* DEVLIB_COMPILER_H */
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