/*!
* \file
* <!--
- * Copyright 2003,2004 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.
+ * 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 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 1.3 2004/06/06 18:00:39 bernie
- * PP_CAT(): New macro.
- *
- * Revision 1.2 2004/06/03 11:27:09 bernie
- * Add dual-license information.
- *
- * Revision 1.1 2004/05/23 17:48:35 bernie
- * Add top-level files.
- *
- */
-#ifndef COMPILER_H
-#define COMPILER_H
+/*#*
+ *#* $Log$
+ *#* 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
+
+#include "cpu_detect.h"
+
+
+#if defined __GNUC__ && defined __GNUC_MINOR__
+ #define GNUC_PREREQ(maj, min) \
+ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+ #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 COMPILER_C99 0
+#endif
+
+
+/*! Concatenate two different preprocessor tokens (allowing macros to expand) */
+#define PP_CAT(x,y) PP_CAT__(x,y)
+#define PP_CAT__(x,y) x ## y
+#define PP_CAT3(x,y,z) PP_CAT(PP_CAT(x,y),z)
+#define PP_CAT4(x,y,z,w) PP_CAT(PP_CAT3(x,y,z),w)
+#define PP_CAT5(x,y,z,w,j) PP_CAT(PP_CAT4(x,y,z,w),j)
+
+/*! String-ize a token (allowing macros to expand) */
+#define PP_STRINGIZE(x) PP_STRINGIZE__(x)
+#define PP_STRINGIZE__(x) #x
-#include "arch_config.h"
#if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
#pragma language=extended
- #define INTERRUPT(x) interrupt [x]
- #define REGISTER shortad
- #define ATOMIC monitor
+ #define INTERRUPT(x) interrupt [x]
+ #define REGISTER shortad
+ #define INLINE /* unsupported */
- /* GCC attributes */
- #define FORMAT(type,fmt,first) /* nothing */
- #define NORETURN /* nothing */
- #define UNUSED(arg) arg
-
- /* 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];
int setjmp(jmp_buf env);
void longjmp(jmp_buf env, int val);
- #ifndef __cplusplus
- #define true 1
- #define false 0
- typedef unsigned char bool;
- #endif /* !__cplusplus */
+ /* Fake bool support */
+ #define true (1==1)
+ #define false (1!=1)
+ typedef unsigned char bool;
#elif defined(_MSC_VER) /* Win32 emulation support */
#include <setjmp.h>
- #include <time.h> /* for time_t */
- #define float double
-
- #define REGISTER /* nothing */
- #define INTERRUPT(x) /* nothing */
-
- /* GCC attributes */
- #define FORMAT(type,fmt,first) /* nothing */
- #define NORETURN /* nothing */
- #define UNUSED(arg) arg
- #define INLINE static inline
- #ifdef __cplusplus
- extern "C" {
- #endif
- void SchedulerIdle(void);
- #ifdef __cplusplus
- }
- #endif
-
- /* Ouch, ReleaseSemaphore() conflicts with a WIN32 call ;-( */
- #define ReleaseSemaphore KReleaseSemaphore
+ /* FIXME: I can't remember why exactly this was needed (NdBernie) */
+ #define float double
+ /* 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 */
+ /* These C99 functions are oddly named in MSVCRT32.lib */
+ #define snprintf _snprintf
+ #define vsnprintf _vsnprintf
+
#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(arg) __attribute__((__unused__)) arg
- //FIXME #define INLINE static inline
- #define INLINE extern inline
-
- #if defined(__i386__)
+ #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 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__))
+ #endif
- /* hack to avoid conflicts with system type */
- #define sigset_t system_sigset_t
+ #if CPU_AVR
+ #include <stddef.h>
+ #include <stdbool.h>
+ #else
+ /* Include some standard C89/C99 stuff */
#include <stddef.h>
#include <setjmp.h>
#include <stdbool.h>
- #undef system_sigset_t
+ #endif
- #define REGISTER /* nothing */
- #define INTERRUPT(x) /* nothing */
+ #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
- #ifdef __cplusplus
- extern "C" {
- #endif
- void SchedulerIdle(void);
- #ifdef __cplusplus
- }
- #endif
+#elif defined(__MWERKS__) && CPU_DSP56K
- #elif defined(__AVR__)
+ /* Compiler features */
+ #define COMPILER_VARIADIC_MACROS 1
+ #define COMPILER_TYPEOF 1
+ #define COMPILER_STATEMENT_EXPRESSIONS 1
- #include <stddef.h>
- #include <stdbool.h>
- #define FLASH __attribute__((progmem))
- #define REGISTER /* nothing */
-
- /* Missing printf-family functions in avr-libc/stdio.h */
- #include <stdarg.h>
- #include <avr/pgmspace.h>
- int vsprintf(char *buf, const char *fmt, va_list ap);
- int vsprintf_P(char *buf, const char * PROGMEM fmt, va_list ap);
-
- /* Support for hardvard architectures */
- #ifdef _PROGMEM
- #define PGM_READ_CHAR(s) pgm_read_byte(s)
- #define PGM_FUNC(x) x ## _P
- #define PGM_ATTR PROGMEM
- #else
- #define PGM_READ_CHAR(s) (*(s))
- #define PGM_FUNC(x) x
- #define PGM_ATTR /*nop*/
- #endif
-
- #endif /* CPU */
-
-#elif defined(__MWERKS__) && (defined(__m56800E__) || defined(__m56800__))
+ #define typeof __typeof__
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include <setjmp.h>
- #define FLASH /* nothing */
- #define REGISTER /* nothing */
- #define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
- #define SCHEDULER_IDLE /* nothing */
-
- #define INLINE static inline
-
- /* GCC attributes */
- #define FORMAT(type,fmt,first) /* nothing */
- #define NORETURN /* nothing */
- #define UNUSED(arg) arg
-
- /* Support for hardvard architectures */
- #define PGM_READ_CHAR(s) (*(s))
- #define PGM_FUNC /* nothing */
- #define PGM_ATTR /* nothing */
- #define PSTR /* nothing */
+ // CodeWarrior has size_t as built-in type, but does not define this symbol.
+ #define _SIZE_T_DEFINED
#else
#error unknown compiler
#endif
-/* Misc definitions */
-#ifndef NULL
-#define NULL 0
-#endif
-#ifndef EOF
-#define EOF (-1)
-#endif
+/* Defaults for compiler extensions. */
-/* Quasi-ANSI macros
- *
- * offsetof(s,m) - Give the byte offset of the member <m> in struct <s>
- * countof(a) - Count the number of elements in the static array <a>
+/*!
+ * \def COMPILER_VARIADIC_MACROS
+ * Support for macros with variable arguments.
*/
-#ifndef offsetof
-#define offsetof(s,m) (size_t)&(((s *)0)->m)
+#ifndef COMPILER_VARIADIC_MACROS
+#define COMPILER_VARIADIC_MACROS (COMPILER_C99 != 0)
#endif
-#ifndef countof
-#define countof(a) (sizeof(a) / sizeof(*(a)))
+/*!
+ * \def COMPILER_TYPEOF
+ * Support for macros with variable arguments.
+ */
+#ifndef COMPILER_TYPEOF
+#define COMPILER_TYPEOF 0
#endif
-/* Simple macros */
-#define ABS(a) (((a) < 0) ? -(a) : (a))
-#define MIN(a,b) (((a) < (b)) ? (a) : (b))
-#define MAX(a,b) (((a) > (b)) ? (a) : (b))
-
-/*! Convert a bit value to a binary flag */
-#ifndef BV
-#define BV(x) (1<<(x))
+/*!
+ * \def COMPILER_STATEMENT_EXPRESSIONS
+ * Support for macros with variable arguments.
+ */
+#ifndef COMPILER_STATEMENT_EXPRESSIONS
+#define COMPILER_STATEMENT_EXPRESSIONS 0
#endif
-/*! Round up \a x to an even multiple of the 2's power \a pad */
-#define ROUND2(x, pad) (((x) + ((pad) - 1)) & ~((pad) - 1))
-
-/*! Calculate a compile-time log2 for a uint8_t */
-#define UINT8_LOG2(x) \
- ((x) < 2 ? 0 : \
- ((x) < 4 ? 1 : \
- ((x) < 8 ? 2 : \
- ((x) < 16 ? 3 : \
- ((x) < 32 ? 4 : \
- ((x) < 64 ? 5 : \
- ((x) < 128 ? 6 : 7)))))))
-
-/*! Calculate a compile-time log2 for a uint16_t */
-#define UINT16_LOG2(x) \
- ((x < 256) ? UINT8_LOG2(x) : UINT8_LOG2((x) >> 8) + 8)
+/* A few defaults for missing compiler features. */
+#ifndef INLINE
+#define INLINE static inline
+#endif
+#ifndef NORETURN
+#define NORETURN /* nothing */
+#endif
+#ifndef FORMAT
+#define FORMAT(type,fmt,first) /* nothing */
+#endif
+#ifndef DEPRECATED
+#define DEPRECATED /* nothing */
+#endif
+#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 */
+#endif
+#ifndef INTERRUPT
+#define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
+#endif
+#ifndef LIKELY
+#define LIKELY(x) x
+#endif
+#ifndef UNLIKELY
+#define UNLIKELY(x) x
+#endif
+#ifndef PURE_FUNC
+#define PURE_FUNC /* nothing */
+#endif
+#ifndef CONST_FUNC
+#define CONST_FUNC /* nothing */
+#endif
+#ifndef UNUSED_FUNC
+#define UNUSED_FUNC /* nothing */
+#endif
+#ifndef USED_FUNC
+#define USED_FUNC /* nothing */
+#endif
+#ifndef RESTRICT
+#define RESTRICT /* nothing */
+#endif
+#ifndef MUST_CHECK
+#define MUST_CHECK /* nothing */
+#endif
-/*! Calculate a compile-time log2 for a uint32_t */
-#define UINT32_LOG2(x) \
- ((x < 65536UL) ? UINT16_LOG2(x) : UINT16_LOG2((x) >> 16) + 16)
+/* Misc definitions */
+#ifndef NULL
+#define NULL (void *)0
+#endif
+#ifndef EOF
+#define EOF (-1)
+#endif
-/*! Concatenate two different preprocessor tokens (allowing macros to expand) */
-#define PP_CAT(x,y) PP_CAT__(x,y)
-#define PP_CAT__(x,y) x ## y
-/* Type definitions - should go in <sys/types.h> */
-#if !(defined(size_t) || defined(_SIZE_T_DEFINED))
- #define size_t unsigned int
+/* 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
-#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 */
-#define IPTR void *
-typedef long utime_t;
-typedef unsigned char sig_t;
-typedef unsigned char sigset_t;
-typedef unsigned char page_t;
-
-/* ISO C99 fixed-size types */
#if (defined(_MSC_VER) || defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__))
+ /*!
+ * \name ISO C99 fixed-size types
+ *
+ * These should be in <stdint.h>, but many compilers lack them.
+ * \{
+ */
typedef signed char int8_t;
typedef short int int16_t;
typedef long int int32_t;
typedef unsigned char uint8_t;
typedef unsigned short int uint16_t;
typedef unsigned long int uint32_t;
-#elif defined(__AVR__)
-# include <inttypes.h>
+ /* \} */
+#elif defined(__GNUC__) && CPU_AVR
+ /* avr-libc is weird... */
+ #include <inttypes.h>
+#else
+ /* This is the correct location. */
+ #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
-# include <stdint.h>
+ 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
-#if (defined(__m56800E__) || defined(__m56800__))
+/*! 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
+
+#if !(defined(_TIME_T_DEFINED) || defined(__time_t_defined) || defined(_EMUL))
+ /*! For backwards compatibility. Use mtime_t in new code. */
+ #define time_t mtime_t
+ #define SIZEOF_TIME_T SIZEOF_MTIME_T
+#else
+ /* Just a guess, but quite safe. */
+ #define SIZEOF_TIME_T SIZEOF_LONG
+#endif /* _TIME_T_DEFINED || __time_t_defined */
+/*\}*/
+
+
+/*!
+ * \name Types for hardware registers.
+ *
+ * Only use these types for registers whose contents can
+ * be changed asynchronously by external hardware.
+ *
+ * \{
+ */
+#if CPU_DSP56K
/* Registers can be accessed only through 16-bit pointers */
typedef volatile uint16_t reg16_t;
#else
typedef volatile uint16_t reg16_t;
typedef volatile uint32_t reg32_t;
#endif
+/*\}*/
+
+
+/* Quasi-ANSI macros */
+#ifndef offsetof
+ /*!
+ * 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).
+ */
+ #define offsetof(s,m) (size_t)&(((s *)0)->m)
+#endif
+#ifndef countof
+ /*!
+ * Count the number of elements in the static array \a a.
+ *
+ * \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 /* COMPILER_H */
+#endif /* DEVLIB_COMPILER_H */