4 * Copyright 2003, 2004 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 devlib/README for information.
11 * \author Bernardo Innocenti <bernie@develer.com>
13 * \brief Additional support macros for compiler independance
18 * Revision 1.14 2004/08/10 06:56:29 bernie
19 * RESTRICT: New C99-like macro; STATIC_ASSERT: Fix warning for multiple invocation in one file.
21 * Revision 1.13 2004/08/02 20:20:29 aleph
22 * Merge from project_ks
24 * Revision 1.12 2004/08/01 01:21:17 bernie
25 * LIKELY(), UNLIKELY(): New compiler-specific macros.
27 * Revision 1.11 2004/07/30 14:34:10 rasky
28 * Vari fix per documentazione e commenti
29 * Aggiunte PP_CATn e STATIC_ASSERT
31 * Revision 1.10 2004/07/30 14:15:53 rasky
32 * Nuovo supporto unificato per detect della CPU
34 * Revision 1.9 2004/07/29 22:57:09 bernie
35 * vsprintf(): Remove prototype for backwards compatibility with GCC 3.4; ssize_t: Add definition for inferior compilers.
37 * Revision 1.8 2004/07/20 23:43:39 bernie
38 * Use attribute((always_inline)) to force inlining. This fixes the much
39 * hated need of redundant prototypes for inline functions.
41 * Revision 1.7 2004/07/20 23:26:48 bernie
42 * Fix two errors introduced by previous commit.
44 * Revision 1.6 2004/07/20 23:12:43 bernie
45 * *** empty log message ***
47 * Revision 1.5 2004/07/20 17:08:03 bernie
48 * Cleanup documentation
50 * Revision 1.4 2004/06/27 15:20:26 aleph
51 * Change UNUSED() macro to accept two arguments: type and name;
52 * Add macro GNUC_PREREQ to detect GCC version during build;
53 * Some spacing cleanups and typo fix
55 * Revision 1.3 2004/06/06 18:00:39 bernie
56 * PP_CAT(): New macro.
58 * Revision 1.2 2004/06/03 11:27:09 bernie
59 * Add dual-license information.
61 * Revision 1.1 2004/05/23 17:48:35 bernie
62 * Add top-level files.
68 #include "arch_config.h"
69 #include "cpu_detect.h"
72 #if defined __GNUC__ && defined __GNUC_MINOR__
73 #define GNUC_PREREQ(maj, min) \
74 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
76 #define GNUC_PREREQ(maj, min) 0
79 #if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
80 #pragma language=extended
81 #define INTERRUPT(x) interrupt [x]
82 #define REGISTER shortad
83 #define INLINE /* unsupported */
85 /* Imported from <longjmp.h>. Unfortunately, we can't just include
86 * this header because it typedefs jmp_buf to be an array of chars.
87 * This would allow the compiler to place the buffer on an odd address.
88 * The CPU _should_ be able to perform word accesses to
89 * unaligned data, but there are *BUGS* in the 80196KC with
90 * some combinations of opcodes and addressing modes. One of
91 * these, "ST SP,[?GR]+" is used in the longjmp() implementation
92 * provided by the IAR compiler ANSI C library. When ?GR contains
93 * an odd address, surprisingly the CPU will copy the high order
94 * byte of the source operand (SP) in the low order byte of the
95 * destination operand (the memory location pointed to by ?GR).
97 * We also need to replace the library setjmp()/longjmp() with
98 * our own versions because the IAR implementation "forgets" to
99 * save the contents of local registers (?LR).
103 void * sp; /* Stack pointer */
104 void * return_addr; /* Return address */
105 int lr[6]; /* 6 local registers */
108 typedef struct _JMP_BUF jmp_buf[1];
110 int setjmp(jmp_buf env);
111 void longjmp(jmp_buf env, int val);
113 /* Fake bool support */
116 typedef unsigned char bool;
118 #elif defined(_MSC_VER) /* Win32 emulation support */
121 #include <time.h> /* for time_t */
124 /* Ouch, ReleaseSemaphore() conflicts with a WIN32 call ;-( */
125 #define ReleaseSemaphore KReleaseSemaphore
127 /* Fake bool support */
132 #endif /* !__cplusplus */
134 #elif defined(__GNUC__)
137 #define FORMAT(type,fmt,first) __attribute__((__format__(type, fmt, first)))
138 #define NORETURN __attribute__((__noreturn__))
139 #define UNUSED(type,arg) __attribute__((__unused__)) type arg
140 #define INLINE static inline __attribute__((__always_inline__))
141 #define LIKELY(x) __builtin_expect((x), 1)
142 #define UNLIKELY(x) __builtin_expect((x), 0)
143 #define RESTRICT __restrict__
145 #define DEPRECATED __attribute__((__deprecated__))
150 /* hack to avoid conflicts with system type */
151 #define sigset_t system_sigset_t
155 #undef system_sigset_t
162 /* Missing printf-family functions in avr-libc/stdio.h */
164 #include <avr/pgmspace.h>
165 int vsprintf_P(char *buf, const char * PROGMEM fmt, va_list ap);
167 /* Support for harvard architectures */
169 #define PGM_READ_CHAR(s) pgm_read_byte(s)
170 #define PGM_FUNC(x) x ## _P
171 #define PGM_ATTR PROGMEM
176 #elif defined(__MWERKS__) && CPU_DSP56K
183 // CodeWarrior has size_t as built-in type, but does not define this symbol.
184 #define _SIZE_T_DEFINED
187 #error unknown compiler
191 /* A few defaults for missing compiler features. */
193 #define INLINE static inline
196 #define NORETURN /* nothing */
199 #define FORMAT(type,fmt,first) /* nothing */
202 #define DEPRECATED /* nothing */
205 #define UNUSED(type,arg) type arg
208 #define REGISTER /* nothing */
211 #define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
217 #define UNLIKELY(x) x
223 /* Support for harvard architectures */
225 #define PSTR /* nothing */
227 #ifndef PGM_READ_CHAR
228 #define PGM_READ_CHAR(s) (*(s))
231 #define PGM_FUNC(x) x
234 #define PGM_ATTR /* nothing */
238 /* Misc definitions */
247 /* Support for hybrid C/C++ applications. */
249 #define EXTERN_C_BEGIN extern "C" {
250 #define EXTERN_C_END }
252 #define EXTERN_C_BEGIN /* nothing */
253 #define EXTERN_C_END /* nothing */
257 /* Quasi-ANSI macros */
259 /*! offsetof(s,m) - Return the byte offset of the member \a m in struct \a s */
260 #define offsetof(s,m) (size_t)&(((s *)0)->m)
263 /*! Count the number of elements in the static array \a a */
264 #define countof(a) (sizeof(a) / sizeof(*(a)))
271 __typeof__(n) _n = (n); \
272 (_n < 0) ? -_n : _n; \
274 #define MIN(a,b) ({ \
275 __typeof__(a) _a = (a); \
276 __typeof__(b) _b = (b); \
277 (void)(&_a == &_b); /* ensure same type */ \
278 (_a < _b) ? _a : _b; \
280 #define MAX(a,b) ({ \
281 __typeof__(a) _a = (a); \
282 __typeof__(b) _b = (b); \
283 (void)(&_a == &_b); /* ensure same type */ \
284 (_a > _b) ? _a : _b; \
287 /* Buggy macros for inferior compilers */
288 #define ABS(a) (((a) < 0) ? -(a) : (a))
289 #define MIN(a,b) (((a) < (b)) ? (a) : (b))
290 #define MAX(a,b) (((a) > (b)) ? (a) : (b))
294 /*! Convert a bit value to a binary flag */
295 #define BV(x) (1<<(x))
298 /*! Round up \a x to an even multiple of the 2's power \a pad */
299 #define ROUND2(x, pad) (((x) + ((pad) - 1)) & ~((pad) - 1))
301 /*! Calculate a compile-time log2 for a uint8_t */
302 #define UINT8_LOG2(x) \
309 ((x) < 128 ? 6 : 7)))))))
311 /*! Calculate a compile-time log2 for a uint16_t */
312 #define UINT16_LOG2(x) \
313 ((x < 256) ? UINT8_LOG2(x) : UINT8_LOG2((x) >> 8) + 8)
315 /*! Calculate a compile-time log2 for a uint32_t */
316 #define UINT32_LOG2(x) \
317 ((x < 65536UL) ? UINT16_LOG2(x) : UINT16_LOG2((x) >> 16) + 16)
319 /*! Concatenate two different preprocessor tokens (allowing macros to expand) */
320 #define PP_CAT(x,y) PP_CAT__(x,y)
321 #define PP_CAT__(x,y) x ## y
322 #define PP_CAT3(x,y,z) PP_CAT(PP_CAT(x,y),z)
323 #define PP_CAT4(x,y,z,w) PP_CAT(PP_CAT3(x,y,z),w)
324 #define PP_CAT5(x,y,z,w,j) PP_CAT(PP_CAT4(x,y,z,w),j)
326 /*! String-ize a token (allowing macros to expand) */
327 #define PP_STRINGIZE(x) PP_STRINGIZE__(x)
328 #define PP_STRINGIZE__(x) #x
330 /*! Issue a compilation error if the \a condition is false */
331 #define STATIC_ASSERT(condition) \
332 extern char PP_CAT(CT_ASSERT___, __LINE__)[(condition) ? 1 : -1]
335 * Standard type definitions
336 * These should be in <sys/types.h>, but many compilers lack them.
338 #if !(defined(size_t) || defined(_SIZE_T_DEFINED))
339 typedef unsigned int size_t;
342 #if !(defined(_TIME_T_DEFINED) || defined(__time_t_defined))
344 #endif /* _TIME_T_DEFINED || __time_t_defined */
346 /*! Storage for pointers and integers */
349 typedef long utime_t;
350 typedef unsigned char sig_t;
351 typedef unsigned char sigset_t;
352 typedef unsigned char page_t;
354 #if (defined(_MSC_VER) || defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__))
356 * ISO C99 fixed-size types
357 * These should be in <stdint.h>, but many compilers lack them.
359 typedef signed char int8_t;
360 typedef short int int16_t;
361 typedef long int int32_t;
362 typedef unsigned char uint8_t;
363 typedef unsigned short int uint16_t;
364 typedef unsigned long int uint32_t;
365 #elif defined(__AVR__)
366 /* TODO: should this detect GCC+AVR combo, or just CPU_AVR? */
367 /* avr-libc is weird... */
368 #include <inttypes.h>
370 /* This is the correct location. */
375 * \name Types for hardware registers.
377 * Only use these types for registers whose contents can
378 * be changed asynchronously by external hardware.
383 /* Registers can be accessed only through 16-bit pointers */
384 typedef volatile uint16_t reg16_t;
386 typedef volatile uint8_t reg8_t;
387 typedef volatile uint16_t reg16_t;
388 typedef volatile uint32_t reg32_t;
392 #endif /* COMPILER_H */