-/*!
+/**
* \file
* <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction. Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License. This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
* 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.
+ *
* -->
*
* \brief Additional support macros for compiler independance
* \author Bernardo Innocenti <bernie@develer.com>
*/
-/*#*
- *#* $Log$
- *#* Revision 1.6 2005/07/19 07:27:31 bernie
- *#* Don't use CPU_REG_BITS from cpu.h to avoid circular header dependendy.
- *#*
- *#* Revision 1.5 2005/06/27 21:24:37 bernie
- *#* ticks_t: New typedef.
- *#*
- *#* Revision 1.4 2005/06/14 06:15:10 bernie
- *#* Add X86_64 support.
- *#*
- *#* Revision 1.3 2005/04/12 01:37:01 bernie
- *#* Metrowerks touchups from HeCo.
- *#*
- *#* Revision 1.2 2005/04/11 19:10:27 bernie
- *#* Include top-level headers from cfg/ subdir.
- *#*
- *#* Revision 1.1 2005/04/11 19:04:13 bernie
- *#* Move top-level headers to cfg/ subdir.
- *#*
- *#* 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
-
-#include <cfg/cpu_detect.h>
+#ifndef BERTOS_COMPILER_H
+#define BERTOS_COMPILER_H
+
+#include <cpu/detect.h>
#if defined __GNUC__ && defined __GNUC_MINOR__
#endif
-/*! Concatenate two different preprocessor tokens (allowing macros to expand) */
+/** 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) */
+/** String-ize a token (allowing macros to expand) */
#define PP_STRINGIZE(x) PP_STRINGIZE__(x)
#define PP_STRINGIZE__(x) #x
#if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
+
#pragma language=extended
- #define INTERRUPT(x) interrupt [x]
- #define REGISTER shortad
- #define INLINE /* unsupported */
- /*
- * 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
- * unaligned data, but there are *BUGS* in the 80196KC with
- * some combinations of opcodes and addressing modes. One of
- * these, "ST SP,[?GR]+" is used in the longjmp() implementation
- * provided by the IAR compiler ANSI C library. When ?GR contains
- * an odd address, surprisingly the CPU will copy the high order
- * byte of the source operand (SP) in the low order byte of the
- * destination operand (the memory location pointed to by ?GR).
- *
- * We also need to replace the library setjmp()/longjmp() with
- * our own versions because the IAR implementation "forgets" to
- * save the contents of local registers (?LR).
- */
- struct _JMP_BUF
- {
- void *sp; /* Stack pointer */
- void *return_addr; /* Return address */
- int lr[6]; /* 6 local registers */
- };
+ #if CPU_ARM
+
+ #define COMPILER_VARIADIC_MACROS 1
+
+ #define INTERRUPT(x) __irq __arm void x (void)
+ #define INLINE static inline
+
+ /* Include some standard C89/C99 stuff */
+ #include <stddef.h>
+ #include <stdint.h>
+ #include <stdbool.h>
+
+ #elif CPU_I196
- typedef struct _JMP_BUF jmp_buf[1];
+ // IAR has size_t as built-in type, but does not define this symbol.
+ #define _SIZE_T_DEFINED
- int setjmp(jmp_buf env);
- void longjmp(jmp_buf env, int val);
+ #define INTERRUPT(x) interrupt [x]
+ #define REGISTER shortad
+ #define INLINE /* unsupported */
- /* Fake bool support */
- #define true (1==1)
- #define false (1!=1)
- typedef unsigned char bool;
+ /*
+ * 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
+ * unaligned data, but there are *BUGS* in the 80196KC with
+ * some combinations of opcodes and addressing modes. One of
+ * these, "ST SP,[?GR]+" is used in the longjmp() implementation
+ * provided by the IAR compiler ANSI C library. When ?GR contains
+ * an odd address, surprisingly the CPU will copy the high order
+ * byte of the source operand (SP) in the low order byte of the
+ * destination operand (the memory location pointed to by ?GR).
+ *
+ * We also need to replace the library setjmp()/longjmp() with
+ * our own versions because the IAR implementation "forgets" to
+ * save the contents of local registers (?LR).
+ */
+ struct _JMP_BUF
+ {
+ 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);
+
+ /* Fake bool support */
+ #define true (1==1)
+ #define false (1!=1)
+ typedef unsigned char bool;
+
+ #else
+ #error Unsupported CPU
+ #endif
#elif defined(_MSC_VER) /* Win32 emulation support */
#define snprintf _snprintf
#define vsnprintf _vsnprintf
+ /* MSVC doesn't support C99's __func__, but has a similar extension. */
+ #define __func__ __FUNCTION__
+
+ /* MSVC doesn't support C99's inline keyword */
+ #ifndef __cplusplus
+ #define INLINE __inline
+ #endif
+
#elif defined(__GNUC__)
/* Compiler features */
#define USED_FUNC __attribute__((__used__))
#define RESTRICT __restrict__
#define MUST_CHECK __attribute__((warn_unused_result))
+ #define PACKED __attribute__((packed))
+ /**
+ * Force compiler to realod context variable.
+ */
+ #define MEMORY_BARRIER asm volatile ("" : : : "memory")
+
#if GNUC_PREREQ(3,1)
#define DEPRECATED __attribute__((__deprecated__))
#endif
+ #ifndef __cplusplus
+ #define ASSERT_TYPE_EQUAL(var1, var2) \
+ STATIC_ASSERT(__builtin_types_compatible_p(typeof(var1), typeof(var2)))
+ #define ASSERT_TYPE_IS(var, type) \
+ STATIC_ASSERT(__builtin_types_compatible_p(typeof(var), type))
+ #endif
+
/* Include some standard C89/C99 stuff */
#include <stddef.h>
+ #include <stdint.h>
#include <stdbool.h>
+ #if !CPU_AVR
+ #include <sys/types.h> /* for ssize_t */
+ #endif
#ifndef __cplusplus
/*
#pragma GCC poison cin cout cerr clog
#endif
+
+
#elif defined(__MWERKS__)
/* Compiler features */
#define UNUSED_ARG(type,arg) type
- #include <stdint.h>
#include <stddef.h>
+ #include <stdint.h>
#include <stdbool.h>
// CodeWarrior has size_t as built-in type, but does not define this symbol.
/* Defaults for compiler extensions. */
-/*!
+/**
* \def COMPILER_VARIADIC_MACROS
* Support for macros with variable arguments.
*/
#define COMPILER_VARIADIC_MACROS (COMPILER_C99 != 0)
#endif
-/*!
+/**
* \def COMPILER_TYPEOF
- * Support for macros with variable arguments.
+ * Support for dynamic type identification.
*/
#ifndef COMPILER_TYPEOF
#define COMPILER_TYPEOF 0
#endif
-/*!
+/**
* \def COMPILER_STATEMENT_EXPRESSIONS
- * Support for macros with variable arguments.
+ * Support for statement expressions.
*/
#ifndef COMPILER_STATEMENT_EXPRESSIONS
#define COMPILER_STATEMENT_EXPRESSIONS 0
#ifndef REGISTER
#define REGISTER /* nothing */
#endif
-#ifndef INTERRUPT
-#define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
-#endif
#ifndef LIKELY
#define LIKELY(x) x
#endif
#ifndef MUST_CHECK
#define MUST_CHECK /* nothing */
#endif
+#ifndef PACKED
+#define PACKED /* nothing */
+#endif
+#ifndef MEMORY_BARRIER
+#define MEMORY_BARRIER /* nothing */
+#warning No memory barrier defined for select compiler. If you use the kernel check it.
+#endif
+
/* Misc definitions */
#ifndef NULL
#define EOF (-1)
#endif
-
/* Support for hybrid C/C++ applications. */
#ifdef __cplusplus
#define EXTERN_C extern "C"
#define EXTERN_C_BEGIN extern "C" {
#define EXTERN_C_END }
+ #define EXTERN_CONST extern const
+ #define CONST_CAST(TYPE,EXPR) (const_cast<TYPE>(EXPR))
#else
#define EXTERN_C extern
#define EXTERN_C_BEGIN /* nothing */
#define EXTERN_C_END /* nothing */
+ #define EXTERN_CONST const
+ #define CONST_CAST(TYPE,EXPR) ((TYPE)(EXPR)) /* FIXME: How can we suppress the warning in C? */
#endif
-#if (defined(_MSC_VER) || defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__))
- /*!
+#if defined(_MSC_VER) \
+ || ((defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)) && CPU_I196)
+ /**
* \name ISO C99 fixed-size types
*
- * These should be in <stdint.h>, but many compilers lack them.
+ * These should be in <stdint.h>, but a few compilers lack them.
* \{
*/
typedef signed char int8_t;
typedef unsigned long long uint64_t;
#endif
/* \} */
-#elif defined(__GNUC__) && CPU_AVR
- /* avr-libc is weird... (Fixed in avr-libc-1.2, hack to be removed soon) */
- #include <inttypes.h>
#else
- /* This is the correct location. */
+ /* This is the standard location. */
#include <stdint.h>
#endif
* The ATmega8 has a very small Flash, so we can't afford
* to link in support routines for 32bit integer arithmetic.
*/
- typedef int16_t ticks_t; /*!< Type for time expressed in ticks. */
- typedef int16_t mtime_t; /*!< Type for time expressed in milliseconds. */
- typedef int16_t utime_t; /*!< Type for time expressed in microseconds. */
+ typedef int16_t ticks_t; /**< Type for time expressed in ticks. */
+ 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 ticks_t; /*!< Type for time expressed in ticks. */
- 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)
+ typedef int32_t ticks_t; /**< Type for time expressed in ticks. */
+
+ typedef int32_t utime_t; /**< Type for time expressed in microseconds. */
#define SIZEOF_UTIME_T (32 / CPU_BITS_PER_CHAR)
- #define MTIME_INFINITE 0x7FFFFFFFL
+
+ #ifndef DEVLIB_MTIME_DEFINED
+ #define DEVLIB_MTIME_DEFINED 1 /* Resolve conflict with <os/hptime.h> */
+ typedef int32_t mtime_t; /**< Type for time expressed in milliseconds. */
+ #define SIZEOF_MTIME_T (32 / CPU_BITS_PER_CHAR)
+ #define MTIME_INFINITE 0x7FFFFFFFL
+ #endif
#endif
-/*! Bulk storage large enough for both pointers or integers. */
+/** Bulk storage large enough for both pointers or integers. */
typedef void * iptr_t;
-/*! Bulk storage large enough for both pointers to constants or integers. */
+/** Bulk storage large enough for both pointers to constants or integers. */
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. */
+typedef unsigned char sigbit_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
*
* We check for some common definitions to avoid redefinitions:
*
- * glibc, avr-libc: _SIZE_T_DEFINED
- * Darwin libc: _BSD_SIZE_T_DEFINED_
+ * glibc, avr-libc: _SIZE_T_DEFINED, __ssize_t_defined
+ * Darwin libc: _BSD_SIZE_T_DEFINED_, _SIZE_T
+ * IAR ARM: _SIZE_T
*
* \{
*/
-#if !(defined(size_t) || defined(_SIZE_T_DEFINED) || defined(_BSD_SIZE_T_DEFINED_))
+#if !(defined(size_t) || defined(_SIZE_T_DEFINED) || defined(_BSD_SIZE_T_DEFINED_) \
+ || defined(_SIZE_T))
#if CPU_X86
/* 32bit or 64bit (32bit for _WIN64). */
typedef unsigned long size_t;
#endif
#endif
-#if !(defined(ssize_t) || defined(__ssize_t_defined))
+#if !(defined(ssize_t) || defined(_SSIZE_T) || defined(__ssize_t_defined))
#if CPU_X86
/* 32bit or 64bit (32bit for _WIN64). */
typedef long ssize_t;
+ #elif CPU_ARM
+ typedef int ssize_t;
#elif CPU_AVR
/* 16bit (missing in avr-libc's sys/types.h). */
typedef int ssize_t;
/*\}*/
-/*!
+/**
* \name Types for hardware registers.
*
* Only use these types for registers whose contents can
/* 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
#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 */
+/**
+ * Cast a member of a structure out to the containing structure.
+ *
+ * \param ptr the pointer to the member.
+ * \param type the type of the container struct this is embedded in.
+ * \param member the name of the member within the struct.
+ */
+#if COMPILER_TYPEOF && COMPILER_STATEMENT_EXPRESSIONS
+ #define containerof(ptr, type, member) ({ \
+ const typeof( ((type *)0)->member ) *_mptr = (ptr); /* type check */ \
+ (type *)((char *)_mptr - offsetof(type, member)); \
+ })
+#else
+ #define containerof(ptr, type, member) \
+ ( (type *)((char *)(ptr) - offsetof(type, member)) )
+#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])
+ UNUSED_VAR(extern char, STATIC_ASSERTION_FAILED__[(condition) ? 1 : -1])
+
+#ifndef ASSERT_TYPE_EQUAL
+ /** Ensure two variables have the same type. */
+ #define ASSERT_TYPE_EQUAL(var1, var2) \
+ do { (void)(&(var1) == &(var2)); } while(0)
+#endif
+
+#ifndef ASSERT_TYPE_IS
+ /** Ensure variable is of specified type. */
+ #define ASSERT_TYPE_IS(var, type) \
+ do { (void)(&(var) == (type *)0); } while(0)
+#endif
-#endif /* DEVLIB_COMPILER_H */
+#endif /* BERTOS_COMPILER_H */
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