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 1.15 2004/08/13 03:23:26 bernie
19 * Adjust a few MSVC tweaks from older projects.
21 * Revision 1.14 2004/08/10 06:56:29 bernie
22 * RESTRICT: New C99-like macro; STATIC_ASSERT: Fix warning for multiple invocation in one file.
24 * Revision 1.13 2004/08/02 20:20:29 aleph
25 * Merge from project_ks
27 * Revision 1.12 2004/08/01 01:21:17 bernie
28 * LIKELY(), UNLIKELY(): New compiler-specific macros.
30 * Revision 1.11 2004/07/30 14:34:10 rasky
31 * Vari fix per documentazione e commenti
32 * Aggiunte PP_CATn e STATIC_ASSERT
34 * Revision 1.10 2004/07/30 14:15:53 rasky
35 * Nuovo supporto unificato per detect della CPU
37 * Revision 1.9 2004/07/29 22:57:09 bernie
38 * vsprintf(): Remove prototype for backwards compatibility with GCC 3.4; ssize_t: Add definition for inferior compilers.
40 * Revision 1.8 2004/07/20 23:43:39 bernie
41 * Use attribute((always_inline)) to force inlining. This fixes the much
42 * hated need of redundant prototypes for inline functions.
44 * Revision 1.7 2004/07/20 23:26:48 bernie
45 * Fix two errors introduced by previous commit.
47 * Revision 1.6 2004/07/20 23:12:43 bernie
48 * *** empty log message ***
50 * Revision 1.5 2004/07/20 17:08:03 bernie
51 * Cleanup documentation
53 * Revision 1.4 2004/06/27 15:20:26 aleph
54 * Change UNUSED() macro to accept two arguments: type and name;
55 * Add macro GNUC_PREREQ to detect GCC version during build;
56 * Some spacing cleanups and typo fix
58 * Revision 1.3 2004/06/06 18:00:39 bernie
59 * PP_CAT(): New macro.
61 * Revision 1.2 2004/06/03 11:27:09 bernie
62 * Add dual-license information.
64 * Revision 1.1 2004/05/23 17:48:35 bernie
65 * Add top-level files.
71 #include "arch_config.h"
72 #include "cpu_detect.h"
75 #if defined __GNUC__ && defined __GNUC_MINOR__
76 #define GNUC_PREREQ(maj, min) \
77 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
79 #define GNUC_PREREQ(maj, min) 0
82 #if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
83 #pragma language=extended
84 #define INTERRUPT(x) interrupt [x]
85 #define REGISTER shortad
86 #define INLINE /* unsupported */
88 /* Imported from <longjmp.h>. Unfortunately, we can't just include
89 * this header because it typedefs jmp_buf to be an array of chars.
90 * This would allow the compiler to place the buffer on an odd address.
91 * The CPU _should_ be able to perform word accesses to
92 * unaligned data, but there are *BUGS* in the 80196KC with
93 * some combinations of opcodes and addressing modes. One of
94 * these, "ST SP,[?GR]+" is used in the longjmp() implementation
95 * provided by the IAR compiler ANSI C library. When ?GR contains
96 * an odd address, surprisingly the CPU will copy the high order
97 * byte of the source operand (SP) in the low order byte of the
98 * destination operand (the memory location pointed to by ?GR).
100 * We also need to replace the library setjmp()/longjmp() with
101 * our own versions because the IAR implementation "forgets" to
102 * save the contents of local registers (?LR).
106 void * sp; /* Stack pointer */
107 void * return_addr; /* Return address */
108 int lr[6]; /* 6 local registers */
111 typedef struct _JMP_BUF jmp_buf[1];
113 int setjmp(jmp_buf env);
114 void longjmp(jmp_buf env, int val);
116 /* Fake bool support */
119 typedef unsigned char bool;
121 #elif defined(_MSC_VER) /* Win32 emulation support */
124 #include <time.h> /* for time_t */
126 /* FIXME: I can't remember why exactly this was needed (NdBernie) */
129 /* Fake bool support */
134 #endif /* !__cplusplus */
136 /* These C99 functions are oddly named in MSVCRT32.lib */
137 #define snprintf _snprintf
138 #define vsnprintf _vsnprintf
140 #elif defined(__GNUC__)
143 #define FORMAT(type,fmt,first) __attribute__((__format__(type, fmt, first)))
144 #define NORETURN __attribute__((__noreturn__))
145 #define UNUSED(type,arg) __attribute__((__unused__)) type arg
146 #define INLINE static inline __attribute__((__always_inline__))
147 #define LIKELY(x) __builtin_expect((x), 1)
148 #define UNLIKELY(x) __builtin_expect((x), 0)
149 #define RESTRICT __restrict__
151 #define DEPRECATED __attribute__((__deprecated__))
156 /* hack to avoid conflicts with system type */
157 #define sigset_t system_sigset_t
161 #undef system_sigset_t
168 /* Missing printf-family functions in avr-libc/stdio.h */
170 #include <avr/pgmspace.h>
171 int vsprintf_P(char *buf, const char * PROGMEM fmt, va_list ap);
173 /* Support for harvard architectures */
175 #define PGM_READ_CHAR(s) pgm_read_byte(s)
176 #define PGM_FUNC(x) x ## _P
177 #define PGM_ATTR PROGMEM
182 #elif defined(__MWERKS__) && CPU_DSP56K
189 // CodeWarrior has size_t as built-in type, but does not define this symbol.
190 #define _SIZE_T_DEFINED
193 #error unknown compiler
197 /* A few defaults for missing compiler features. */
199 #define INLINE static inline
202 #define NORETURN /* nothing */
205 #define FORMAT(type,fmt,first) /* nothing */
208 #define DEPRECATED /* nothing */
211 #define UNUSED(type,arg) type arg
214 #define REGISTER /* nothing */
217 #define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
223 #define UNLIKELY(x) x
229 /* Support for harvard architectures */
231 #define PSTR /* nothing */
233 #ifndef PGM_READ_CHAR
234 #define PGM_READ_CHAR(s) (*(s))
237 #define PGM_FUNC(x) x
240 #define PGM_ATTR /* nothing */
244 /* Misc definitions */
253 /* Support for hybrid C/C++ applications. */
255 #define EXTERN_C_BEGIN extern "C" {
256 #define EXTERN_C_END }
258 #define EXTERN_C_BEGIN /* nothing */
259 #define EXTERN_C_END /* nothing */
263 /* Quasi-ANSI macros */
265 /*! offsetof(s,m) - Return the byte offset of the member \a m in struct \a s */
266 #define offsetof(s,m) (size_t)&(((s *)0)->m)
269 /*! Count the number of elements in the static array \a a */
270 #define countof(a) (sizeof(a) / sizeof(*(a)))
277 __typeof__(n) _n = (n); \
278 (_n < 0) ? -_n : _n; \
280 #define MIN(a,b) ({ \
281 __typeof__(a) _a = (a); \
282 __typeof__(b) _b = (b); \
283 (void)(&_a == &_b); /* ensure same type */ \
284 (_a < _b) ? _a : _b; \
286 #define MAX(a,b) ({ \
287 __typeof__(a) _a = (a); \
288 __typeof__(b) _b = (b); \
289 (void)(&_a == &_b); /* ensure same type */ \
290 (_a > _b) ? _a : _b; \
293 /* Buggy macros for inferior compilers */
294 #define ABS(a) (((a) < 0) ? -(a) : (a))
295 #define MIN(a,b) (((a) < (b)) ? (a) : (b))
296 #define MAX(a,b) (((a) > (b)) ? (a) : (b))
300 /*! Convert a bit value to a binary flag */
301 #define BV(x) (1<<(x))
304 /*! Round up \a x to an even multiple of the 2's power \a pad */
305 #define ROUND2(x, pad) (((x) + ((pad) - 1)) & ~((pad) - 1))
307 /*! Calculate a compile-time log2 for a uint8_t */
308 #define UINT8_LOG2(x) \
315 ((x) < 128 ? 6 : 7)))))))
317 /*! Calculate a compile-time log2 for a uint16_t */
318 #define UINT16_LOG2(x) \
319 ((x < 256) ? UINT8_LOG2(x) : UINT8_LOG2((x) >> 8) + 8)
321 /*! Calculate a compile-time log2 for a uint32_t */
322 #define UINT32_LOG2(x) \
323 ((x < 65536UL) ? UINT16_LOG2(x) : UINT16_LOG2((x) >> 16) + 16)
325 /*! Concatenate two different preprocessor tokens (allowing macros to expand) */
326 #define PP_CAT(x,y) PP_CAT__(x,y)
327 #define PP_CAT__(x,y) x ## y
328 #define PP_CAT3(x,y,z) PP_CAT(PP_CAT(x,y),z)
329 #define PP_CAT4(x,y,z,w) PP_CAT(PP_CAT3(x,y,z),w)
330 #define PP_CAT5(x,y,z,w,j) PP_CAT(PP_CAT4(x,y,z,w),j)
332 /*! String-ize a token (allowing macros to expand) */
333 #define PP_STRINGIZE(x) PP_STRINGIZE__(x)
334 #define PP_STRINGIZE__(x) #x
336 /*! Issue a compilation error if the \a condition is false */
337 #define STATIC_ASSERT(condition) \
338 extern char PP_CAT(CT_ASSERT___, __LINE__)[(condition) ? 1 : -1]
341 * Standard type definitions
342 * These should be in <sys/types.h>, but many compilers lack them.
344 #if !(defined(size_t) || defined(_SIZE_T_DEFINED))
345 typedef unsigned int size_t;
348 #if !(defined(_TIME_T_DEFINED) || defined(__time_t_defined))
350 #endif /* _TIME_T_DEFINED || __time_t_defined */
352 /*! Storage for pointers and integers */
355 typedef long utime_t;
356 typedef unsigned char sig_t;
357 typedef unsigned char sigset_t;
358 typedef unsigned char page_t;
360 #if (defined(_MSC_VER) || defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__))
362 * ISO C99 fixed-size types
363 * These should be in <stdint.h>, but many compilers lack them.
365 typedef signed char int8_t;
366 typedef short int int16_t;
367 typedef long int int32_t;
368 typedef unsigned char uint8_t;
369 typedef unsigned short int uint16_t;
370 typedef unsigned long int uint32_t;
371 #elif defined(__AVR__)
372 /* TODO: should this detect GCC+AVR combo, or just CPU_AVR? */
373 /* avr-libc is weird... */
374 #include <inttypes.h>
376 /* This is the correct location. */
381 * \name Types for hardware registers.
383 * Only use these types for registers whose contents can
384 * be changed asynchronously by external hardware.
389 /* Registers can be accessed only through 16-bit pointers */
390 typedef volatile uint16_t reg16_t;
392 typedef volatile uint8_t reg8_t;
393 typedef volatile uint16_t reg16_t;
394 typedef volatile uint32_t reg32_t;
398 #endif /* COMPILER_H */