4 * Copyright 2003, 2004, 2005 Develer S.r.l. (http://www.develer.com/)
5 * Copyright 2001, 2002, 2003 Bernardo Innocenti <bernie@codewiz.org>
6 * This file is part of DevLib - See README.devlib for information.
9 * \brief Additional support macros for compiler independance
12 * \author Bernardo Innocenti <bernie@develer.com>
17 *#* Revision 1.10 2006/02/15 09:12:01 bernie
18 *#* Fixes for ARM/IAR support.
20 *#* Revision 1.9 2006/02/10 12:38:00 bernie
21 *#* Add support for ARM on IAR.
23 *#* Revision 1.8 2006/01/16 03:27:49 bernie
24 *#* Rename sig_t to sigbit_t to avoid clash with POSIX.
26 *#* Revision 1.7 2005/11/27 23:33:05 bernie
27 *#* Drop avr-libc hack for missing stdint.h.
29 *#* Revision 1.6 2005/07/19 07:27:31 bernie
30 *#* Don't use CPU_REG_BITS from cpu.h to avoid circular header dependendy.
32 *#* Revision 1.5 2005/06/27 21:24:37 bernie
33 *#* ticks_t: New typedef.
35 *#* Revision 1.4 2005/06/14 06:15:10 bernie
36 *#* Add X86_64 support.
38 *#* Revision 1.3 2005/04/12 01:37:01 bernie
39 *#* Metrowerks touchups from HeCo.
41 *#* Revision 1.2 2005/04/11 19:10:27 bernie
42 *#* Include top-level headers from cfg/ subdir.
44 *#* Revision 1.1 2005/04/11 19:04:13 bernie
45 *#* Move top-level headers to cfg/ subdir.
47 *#* Revision 1.44 2005/03/29 06:39:59 bernie
48 *#* setjmp.h, time_t: Remove ancient retrocompatibility; Remove MSVC double to float hack.
50 *#* Revision 1.43 2005/03/01 23:15:12 bernie
51 *#* Remove compatibility hack.
53 *#* Revision 1.42 2005/02/16 20:28:46 bernie
54 *#* Move PGM macros to mware/pgm.h
56 *#* Revision 1.41 2005/01/22 04:19:22 bernie
57 *#* MTIME_INFINITE: New constant.
59 *#* Revision 1.40 2005/01/20 18:46:04 aleph
60 *#* Add progmem datatypes; PSTR() definition.
62 #ifndef DEVLIB_COMPILER_H
63 #define DEVLIB_COMPILER_H
65 #include <cfg/cpu_detect.h>
68 #if defined __GNUC__ && defined __GNUC_MINOR__
69 #define GNUC_PREREQ(maj, min) \
70 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
72 #define GNUC_PREREQ(maj, min) 0
75 /* Some CW versions do not allow enabling C99 from the settings panel. */
76 #if defined(__MWERKS__)
80 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
81 #define COMPILER_C99 1
83 #define COMPILER_C99 0
87 /*! Concatenate two different preprocessor tokens (allowing macros to expand) */
88 #define PP_CAT(x,y) PP_CAT__(x,y)
89 #define PP_CAT__(x,y) x ## y
90 #define PP_CAT3(x,y,z) PP_CAT(PP_CAT(x,y),z)
91 #define PP_CAT4(x,y,z,w) PP_CAT(PP_CAT3(x,y,z),w)
92 #define PP_CAT5(x,y,z,w,j) PP_CAT(PP_CAT4(x,y,z,w),j)
94 /*! String-ize a token (allowing macros to expand) */
95 #define PP_STRINGIZE(x) PP_STRINGIZE__(x)
96 #define PP_STRINGIZE__(x) #x
99 #if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
101 #pragma language=extended
105 #define COMPILER_VARIADIC_MACROS 1
107 #define INTERRUPT(x) __irq __arm void x (void)
108 #define INLINE static inline
110 /* Include some standard C89/C99 stuff */
117 // IAR has size_t as built-in type, but does not define this symbol.
118 #define _SIZE_T_DEFINED
120 #define INTERRUPT(x) interrupt [x]
121 #define REGISTER shortad
122 #define INLINE /* unsupported */
125 * Imported from <longjmp.h>. Unfortunately, we can't just include
126 * this header because it typedefs jmp_buf to be an array of chars.
127 * This would allow the compiler to place the buffer on an odd address.
128 * The CPU _should_ be able to perform word accesses to
129 * unaligned data, but there are *BUGS* in the 80196KC with
130 * some combinations of opcodes and addressing modes. One of
131 * these, "ST SP,[?GR]+" is used in the longjmp() implementation
132 * provided by the IAR compiler ANSI C library. When ?GR contains
133 * an odd address, surprisingly the CPU will copy the high order
134 * byte of the source operand (SP) in the low order byte of the
135 * destination operand (the memory location pointed to by ?GR).
137 * We also need to replace the library setjmp()/longjmp() with
138 * our own versions because the IAR implementation "forgets" to
139 * save the contents of local registers (?LR).
143 void *sp; /* Stack pointer */
144 void *return_addr; /* Return address */
145 int lr[6]; /* 6 local registers */
148 typedef struct _JMP_BUF jmp_buf[1];
150 int setjmp(jmp_buf env);
151 void longjmp(jmp_buf env, int val);
153 /* Fake bool support */
156 typedef unsigned char bool;
159 #error Unsupported CPU
162 #elif defined(_MSC_VER) /* Win32 emulation support */
164 /* MSVC doesn't provide <stdbool.h>. */
169 #endif /* !__cplusplus */
171 /* These C99 functions are oddly named in MSVCRT32.lib */
172 #define snprintf _snprintf
173 #define vsnprintf _vsnprintf
175 #elif defined(__GNUC__)
177 /* Compiler features */
178 #define COMPILER_VARIADIC_MACROS 1 /* Even in C++ */
179 #define COMPILER_TYPEOF 1
180 #define COMPILER_STATEMENT_EXPRESSIONS 1
183 #define FORMAT(type,fmt,first) __attribute__((__format__(type, fmt, first)))
184 #define NORETURN __attribute__((__noreturn__))
185 #define UNUSED_ARG(type,arg) __attribute__((__unused__)) type arg
186 #define UNUSED_VAR(type,name) __attribute__((__unused__)) type name
187 #define USED_VAR(type,name) __attribute__((__used__)) type name
188 #define INLINE static inline __attribute__((__always_inline__))
189 #define LIKELY(x) __builtin_expect(!!(x), 1)
190 #define UNLIKELY(x) __builtin_expect(!!(x), 0)
191 #define PURE_FUNC __attribute__((pure))
192 #define CONST_FUNC __attribute__((const))
193 #define UNUSED_FUNC __attribute__((unused))
194 #define USED_FUNC __attribute__((__used__))
195 #define RESTRICT __restrict__
196 #define MUST_CHECK __attribute__((warn_unused_result))
198 #define DEPRECATED __attribute__((__deprecated__))
201 /* Include some standard C89/C99 stuff */
208 * Disallow some C++ keywords as identifiers in C programs,
209 * for improved portability.
211 #pragma GCC poison new delete class template typename
212 #pragma GCC poison private protected public operator
213 #pragma GCC poison friend mutable using namespace
214 #pragma GCC poison cin cout cerr clog
217 #elif defined(__MWERKS__)
219 /* Compiler features */
220 #define COMPILER_VARIADIC_MACROS 1
221 #define COMPILER_TYPEOF 1
222 #define COMPILER_STATEMENT_EXPRESSIONS 1
224 #define typeof __typeof__
226 #define UNUSED_ARG(type,arg) type
232 // CodeWarrior has size_t as built-in type, but does not define this symbol.
233 #define _SIZE_T_DEFINED
236 #error unknown compiler
240 /* Defaults for compiler extensions. */
243 * \def COMPILER_VARIADIC_MACROS
244 * Support for macros with variable arguments.
246 #ifndef COMPILER_VARIADIC_MACROS
247 #define COMPILER_VARIADIC_MACROS (COMPILER_C99 != 0)
251 * \def COMPILER_TYPEOF
252 * Support for dynamic type identification.
254 #ifndef COMPILER_TYPEOF
255 #define COMPILER_TYPEOF 0
259 * \def COMPILER_STATEMENT_EXPRESSIONS
260 * Support for statement expressions.
262 #ifndef COMPILER_STATEMENT_EXPRESSIONS
263 #define COMPILER_STATEMENT_EXPRESSIONS 0
266 /* A few defaults for missing compiler features. */
268 #define INLINE static inline
271 #define NORETURN /* nothing */
274 #define FORMAT(type,fmt,first) /* nothing */
277 #define DEPRECATED /* nothing */
280 #define UNUSED_ARG(type,arg) type arg
282 #define UNUSED UNUSED_ARG /* OBSOLETE */
284 #define UNUSED_VAR(type,name) type name
287 #define USED_VAR(type,name) type name
290 #define REGISTER /* nothing */
293 #define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
299 #define UNLIKELY(x) x
302 #define PURE_FUNC /* nothing */
305 #define CONST_FUNC /* nothing */
308 #define UNUSED_FUNC /* nothing */
311 #define USED_FUNC /* nothing */
314 #define RESTRICT /* nothing */
317 #define MUST_CHECK /* nothing */
320 /* Misc definitions */
322 #define NULL (void *)0
329 /* Support for hybrid C/C++ applications. */
331 #define EXTERN_C extern "C"
332 #define EXTERN_C_BEGIN extern "C" {
333 #define EXTERN_C_END }
334 #define EXTERN_CONST extern const
336 #define EXTERN_C extern
337 #define EXTERN_C_BEGIN /* nothing */
338 #define EXTERN_C_END /* nothing */
339 #define EXTERN_CONST const
343 #if defined(_MSC_VER)
344 || ((defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)) && CPU_I196)
346 * \name ISO C99 fixed-size types
348 * These should be in <stdint.h>, but a few compilers lack them.
351 typedef signed char int8_t;
352 typedef unsigned char uint8_t;
353 typedef short int int16_t;
354 typedef unsigned short int uint16_t;
355 typedef long int int32_t; /* _WIN64 safe */
356 typedef unsigned long int uint32_t; /* _WIN64 safe */
359 typedef __int64 int64_t;
360 typedef unsigned __int64 uint64_t;
362 typedef long long int64_t;
363 typedef unsigned long long uint64_t;
367 /* This is the standard location. */
373 * The ATmega8 has a very small Flash, so we can't afford
374 * to link in support routines for 32bit integer arithmetic.
376 typedef int16_t ticks_t; /*!< Type for time expressed in ticks. */
377 typedef int16_t mtime_t; /*!< Type for time expressed in milliseconds. */
378 typedef int16_t utime_t; /*!< Type for time expressed in microseconds. */
379 #define SIZEOF_MTIME_T (16 / CPU_BITS_PER_CHAR)
380 #define SIZEOF_UTIME_T (16 / CPU_BITS_PER_CHAR)
381 #define MTIME_INFINITE 0x7FFFL
383 typedef int32_t ticks_t; /*!< Type for time expressed in ticks. */
384 typedef int32_t mtime_t; /*!< Type for time expressed in milliseconds. */
385 typedef int32_t utime_t; /*!< Type for time expressed in microseconds. */
386 #define SIZEOF_MTIME_T (32 / CPU_BITS_PER_CHAR)
387 #define SIZEOF_UTIME_T (32 / CPU_BITS_PER_CHAR)
388 #define MTIME_INFINITE 0x7FFFFFFFL
391 /*! Bulk storage large enough for both pointers or integers. */
392 typedef void * iptr_t;
394 /*! Bulk storage large enough for both pointers to constants or integers. */
395 typedef const void * const_iptr_t;
397 typedef unsigned char sigbit_t; /*!< Type for signal bits. */
398 typedef unsigned char sigmask_t; /*!< Type for signal masks. */
399 typedef unsigned char page_t; /*!< Type for banked memory pages. */
403 * \name Standard type definitions.
405 * These should be in <sys/types.h> or <stddef.h>, but many compilers
406 * and C libraries lack them.
408 * We check for some common definitions to avoid redefinitions:
410 * glibc, avr-libc: _SIZE_T_DEFINED
411 * Darwin libc: _BSD_SIZE_T_DEFINED_
416 #if !(defined(size_t) || defined(_SIZE_T_DEFINED) || defined(_BSD_SIZE_T_DEFINED_) \
419 /* 32bit or 64bit (32bit for _WIN64). */
420 typedef unsigned long size_t;
426 #if !(defined(ssize_t) || defined(__ssize_t_defined))
428 /* 32bit or 64bit (32bit for _WIN64). */
429 typedef long ssize_t;
433 /* 16bit (missing in avr-libc's sys/types.h). */
443 * \name Types for hardware registers.
445 * Only use these types for registers whose contents can
446 * be changed asynchronously by external hardware.
451 /* Registers can be accessed only through 16-bit pointers */
452 typedef volatile uint16_t reg16_t;
454 typedef volatile uint8_t reg8_t;
455 typedef volatile uint16_t reg16_t;
456 typedef volatile uint32_t reg32_t;
461 /* Quasi-ANSI macros */
464 * Return the byte offset of the member \a m in struct \a s.
466 * \note This macro should be defined in "stddef.h" and is sometimes
467 * compiler-specific (g++ has a builtin for it).
469 #define offsetof(s,m) (size_t)&(((s *)0)->m)
473 * Count the number of elements in the static array \a a.
475 * \note This macro is non-standard, but implements a very common idiom
477 #define countof(a) (sizeof(a) / sizeof(*(a)))
480 /*! Issue a compilation error if the \a condition is false */
481 #define STATIC_ASSERT(condition) \
482 UNUSED_VAR(extern char,PP_CAT(CT_ASSERT___, __LINE__)[(condition) ? 1 : -1])
484 #endif /* DEVLIB_COMPILER_H */