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 1.12 2004/08/01 01:21:17 bernie
19 * LIKELY(), UNLIKELY(): New compiler-specific macros.
21 * Revision 1.11 2004/07/30 14:34:10 rasky
22 * Vari fix per documentazione e commenti
23 * Aggiunte PP_CATn e STATIC_ASSERT
25 * Revision 1.10 2004/07/30 14:15:53 rasky
26 * Nuovo supporto unificato per detect della CPU
28 * Revision 1.9 2004/07/29 22:57:09 bernie
29 * vsprintf(): Remove prototype for backwards compatibility with GCC 3.4; ssize_t: Add definition for inferior compilers.
31 * Revision 1.8 2004/07/20 23:43:39 bernie
32 * Use attribute((always_inline)) to force inlining. This fixes the much
33 * hated need of redundant prototypes for inline functions.
35 * Revision 1.7 2004/07/20 23:26:48 bernie
36 * Fix two errors introduced by previous commit.
38 * Revision 1.6 2004/07/20 23:12:43 bernie
39 * *** empty log message ***
41 * Revision 1.5 2004/07/20 17:08:03 bernie
42 * Cleanup documentation
44 * Revision 1.4 2004/06/27 15:20:26 aleph
45 * Change UNUSED() macro to accept two arguments: type and name;
46 * Add macro GNUC_PREREQ to detect GCC version during build;
47 * Some spacing cleanups and typo fix
49 * Revision 1.3 2004/06/06 18:00:39 bernie
50 * PP_CAT(): New macro.
52 * Revision 1.2 2004/06/03 11:27:09 bernie
53 * Add dual-license information.
55 * Revision 1.1 2004/05/23 17:48:35 bernie
56 * Add top-level files.
62 #include "arch_config.h"
63 #include "cpu_detect.h"
66 #if defined __GNUC__ && defined __GNUC_MINOR__
67 #define GNUC_PREREQ(maj, min) \
68 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
70 #define GNUC_PREREQ(maj, min) 0
73 #if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
74 #pragma language=extended
75 #define INTERRUPT(x) interrupt [x]
76 #define REGISTER shortad
77 #define INLINE /* unsupported */
79 /* Imported from <longjmp.h>. Unfortunately, we can't just include
80 * this header because it typedefs jmp_buf to be an array of chars.
81 * This would allow the compiler to place the buffer on an odd address.
82 * The CPU _should_ be able to perform word accesses to
83 * unaligned data, but there are *BUGS* in the 80196KC with
84 * some combinations of opcodes and addressing modes. One of
85 * these, "ST SP,[?GR]+" is used in the longjmp() implementation
86 * provided by the IAR compiler ANSI C library. When ?GR contains
87 * an odd address, surprisingly the CPU will copy the high order
88 * byte of the source operand (SP) in the low order byte of the
89 * destination operand (the memory location pointed to by ?GR).
91 * We also need to replace the library setjmp()/longjmp() with
92 * our own versions because the IAR implementation "forgets" to
93 * save the contents of local registers (?LR).
97 void * sp; /* Stack pointer */
98 void * return_addr; /* Return address */
99 int lr[6]; /* 6 local registers */
102 typedef struct _JMP_BUF jmp_buf[1];
104 int setjmp(jmp_buf env);
105 void longjmp(jmp_buf env, int val);
107 /* Fake bool support */
110 typedef unsigned char bool;
112 #elif defined(_MSC_VER) /* Win32 emulation support */
115 #include <time.h> /* for time_t */
118 /* Ouch, ReleaseSemaphore() conflicts with a WIN32 call ;-( */
119 #define ReleaseSemaphore KReleaseSemaphore
121 /* Fake bool support */
126 #endif /* !__cplusplus */
128 #elif defined(__GNUC__)
131 #define FORMAT(type,fmt,first) __attribute__((__format__(type, fmt, first)))
132 #define NORETURN __attribute__((__noreturn__))
133 #define UNUSED(type,arg) __attribute__((__unused__)) type arg
134 #define INLINE static inline __attribute__((__always_inline__))
135 #define LIKELY(x) __builtin_expect((x), 1)
136 #define UNLIKELY(x) __builtin_expect((x), 0)
138 #define DEPRECATED __attribute__((__deprecated__))
143 /* hack to avoid conflicts with system type */
144 #define sigset_t system_sigset_t
148 #undef system_sigset_t
155 /* Missing printf-family functions in avr-libc/stdio.h */
157 #include <avr/pgmspace.h>
158 int vsprintf_P(char *buf, const char * PROGMEM fmt, va_list ap);
160 /* Support for harvard architectures */
162 #define PGM_READ_CHAR(s) pgm_read_byte(s)
163 #define PGM_FUNC(x) x ## _P
164 #define PGM_ATTR PROGMEM
169 #elif defined(__MWERKS__) && CPU_DSP56K
176 // CodeWarrior has size_t as built-in type, but does not define this symbol.
177 #define _SIZE_T_DEFINED
180 #error unknown compiler
184 /* A few defaults for missing compiler features. */
186 #define INLINE static inline
189 #define NORETURN /* nothing */
192 #define FORMAT(type,fmt,first) /* nothing */
195 #define DEPRECATED /* nothing */
198 #define UNUSED(type,arg) type arg
201 #define REGISTER /* nothing */
204 #define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
210 #define UNLIKELY(x) x
213 /* Support for harvard architectures */
215 #define PSTR /* nothing */
217 #ifndef PGM_READ_CHAR
218 #define PGM_READ_CHAR(s) (*(s))
221 #define PGM_FUNC(x) x
224 #define PGM_ATTR /* nothing */
228 /* Misc definitions */
237 /* Support for hybrid C/C++ applications. */
239 #define EXTERN_C_BEGIN extern "C" {
240 #define EXTERN_C_END }
242 #define EXTERN_C_BEGIN /* nothing */
243 #define EXTERN_C_END /* nothing */
247 /* Quasi-ANSI macros */
249 /*! offsetof(s,m) - Return the byte offset of the member \a m in struct \a s */
250 #define offsetof(s,m) (size_t)&(((s *)0)->m)
253 /*! Count the number of elements in the static array \a a */
254 #define countof(a) (sizeof(a) / sizeof(*(a)))
259 #define ABS(a) (((a) < 0) ? -(a) : (a))
260 #define MIN(a,b) (((a) < (b)) ? (a) : (b))
261 #define MAX(a,b) (((a) > (b)) ? (a) : (b))
264 /*! Convert a bit value to a binary flag */
265 #define BV(x) (1<<(x))
268 /*! Round up \a x to an even multiple of the 2's power \a pad */
269 #define ROUND2(x, pad) (((x) + ((pad) - 1)) & ~((pad) - 1))
271 /*! Calculate a compile-time log2 for a uint8_t */
272 #define UINT8_LOG2(x) \
279 ((x) < 128 ? 6 : 7)))))))
281 /*! Calculate a compile-time log2 for a uint16_t */
282 #define UINT16_LOG2(x) \
283 ((x < 256) ? UINT8_LOG2(x) : UINT8_LOG2((x) >> 8) + 8)
285 /*! Calculate a compile-time log2 for a uint32_t */
286 #define UINT32_LOG2(x) \
287 ((x < 65536UL) ? UINT16_LOG2(x) : UINT16_LOG2((x) >> 16) + 16)
289 /*! Concatenate two different preprocessor tokens (allowing macros to expand) */
290 #define PP_CAT(x,y) PP_CAT__(x,y)
291 #define PP_CAT__(x,y) x ## y
292 #define PP_CAT3(x,y,z) PP_CAT(PP_CAT(x,y),z)
293 #define PP_CAT4(x,y,z,w) PP_CAT(PP_CAT3(x,y,z),w)
294 #define PP_CAT5(x,y,z,w,j) PP_CAT(PP_CAT4(x,y,z,w),j)
296 /*! String-ize a token (allowing macros to expand) */
297 #define PP_STRINGIZE(x) PP_STRINGIZE__(x)
298 #define PP_STRINGIZE__(x) #x
300 /*! Issue a compilation error if the \a condition is false */
301 #define STATIC_ASSERT(condition) \
302 extern char CT_ASSERT___[(condition) ? 1 : -1]
305 * Standard type definitions
306 * These should be in <sys/types.h>, but many compilers lack them.
308 #if !(defined(size_t) || defined(_SIZE_T_DEFINED))
309 typedef unsigned int size_t;
312 #if !(defined(_TIME_T_DEFINED) || defined(__time_t_defined))
314 #endif /* _TIME_T_DEFINED || __time_t_defined */
316 /*! Storage for pointers and integers */
319 typedef long utime_t;
320 typedef unsigned char sig_t;
321 typedef unsigned char sigset_t;
322 typedef unsigned char page_t;
324 #if (defined(_MSC_VER) || defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__))
326 * ISO C99 fixed-size types
327 * These should be in <stdint.h>, but many compilers lack them.
329 typedef signed char int8_t;
330 typedef short int int16_t;
331 typedef long int int32_t;
332 typedef unsigned char uint8_t;
333 typedef unsigned short int uint16_t;
334 typedef unsigned long int uint32_t;
335 #elif defined(__AVR__)
336 /* TODO: should this detect GCC+AVR combo, or just CPU_AVR? */
337 /* avr-libc is weird... */
338 #include <inttypes.h>
340 /* This is the correct location. */
345 * \name Types for hardware registers.
347 * Only use these types for registers whose contents can
348 * be changed asynchronously by external hardware.
353 /* Registers can be accessed only through 16-bit pointers */
354 typedef volatile uint16_t reg16_t;
356 typedef volatile uint8_t reg8_t;
357 typedef volatile uint16_t reg16_t;
358 typedef volatile uint32_t reg32_t;
362 #endif /* COMPILER_H */