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 1.21 2004/09/06 21:38:31 bernie
19 *#* Misc documentation and style fixes.
21 *#* Revision 1.20 2004/08/29 21:57:58 bernie
22 *#* Move back STATIC_ASSERT() to compiler.h as it's needed in cpu.h;
23 *#* iptr_t, const_iptr_t: Replace IPTR macro with a real typedef.
25 *#* Revision 1.19 2004/08/25 14:12:08 rasky
26 *#* Aggiornato il comment block dei log RCS
28 *#* Revision 1.18 2004/08/24 16:32:37 bernie
29 *#* Document custom types.
31 *#* Revision 1.17 2004/08/24 13:32:14 bernie
32 *#* PP_CAT(), PP_STRINGIZE(): Move back to compiler.h to break circular dependency between cpu.h/compiler.h/macros.h;
33 *#* offsetof(), countof(): Move back to compiler.h to avoid including macros.h almost everywhere;
35 *#* Rename header guards;
36 *#* Don't include arch_config.h in compiler.h as it's not needed there.
38 *#* Revision 1.16 2004/08/14 19:37:57 rasky
39 *#* Merge da SC: macros.h, pool.h, BIT_CHANGE, nome dei processi, etc.
41 *#* Revision 1.15 2004/08/13 03:23:26 bernie
42 *#* Adjust a few MSVC tweaks from older projects.
44 *#* Revision 1.14 2004/08/10 06:56:29 bernie
45 *#* RESTRICT: New C99-like macro; STATIC_ASSERT: Fix warning for multiple invocation in one file.
47 *#* Revision 1.13 2004/08/02 20:20:29 aleph
48 *#* Merge from project_ks
50 *#* Revision 1.12 2004/08/01 01:21:17 bernie
51 *#* LIKELY(), UNLIKELY(): New compiler-specific macros.
53 *#* Revision 1.11 2004/07/30 14:34:10 rasky
54 *#* Vari fix per documentazione e commenti
55 *#* Aggiunte PP_CATn e STATIC_ASSERT
57 *#* Revision 1.10 2004/07/30 14:15:53 rasky
58 *#* Nuovo supporto unificato per detect della CPU
60 *#* Revision 1.9 2004/07/29 22:57:09 bernie
61 *#* vsprintf(): Remove prototype for backwards compatibility with GCC 3.4; ssize_t: Add definition for inferior compilers.
63 #ifndef DEVLIB_COMPILER_H
64 #define DEVLIB_COMPILER_H
66 #include "cpu_detect.h"
69 #if defined __GNUC__ && defined __GNUC_MINOR__
70 #define GNUC_PREREQ(maj, min) \
71 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
73 #define GNUC_PREREQ(maj, min) 0
76 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
77 #define COMPILER_C99 1
79 #define COMPILER_C99 0
83 /*! Concatenate two different preprocessor tokens (allowing macros to expand) */
84 #define PP_CAT(x,y) PP_CAT__(x,y)
85 #define PP_CAT__(x,y) x ## y
86 #define PP_CAT3(x,y,z) PP_CAT(PP_CAT(x,y),z)
87 #define PP_CAT4(x,y,z,w) PP_CAT(PP_CAT3(x,y,z),w)
88 #define PP_CAT5(x,y,z,w,j) PP_CAT(PP_CAT4(x,y,z,w),j)
90 /*! String-ize a token (allowing macros to expand) */
91 #define PP_STRINGIZE(x) PP_STRINGIZE__(x)
92 #define PP_STRINGIZE__(x) #x
95 #if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
96 #pragma language=extended
97 #define INTERRUPT(x) interrupt [x]
98 #define REGISTER shortad
99 #define INLINE /* unsupported */
101 /* Imported from <longjmp.h>. Unfortunately, we can't just include
102 * this header because it typedefs jmp_buf to be an array of chars.
103 * This would allow the compiler to place the buffer on an odd address.
104 * The CPU _should_ be able to perform word accesses to
105 * unaligned data, but there are *BUGS* in the 80196KC with
106 * some combinations of opcodes and addressing modes. One of
107 * these, "ST SP,[?GR]+" is used in the longjmp() implementation
108 * provided by the IAR compiler ANSI C library. When ?GR contains
109 * an odd address, surprisingly the CPU will copy the high order
110 * byte of the source operand (SP) in the low order byte of the
111 * destination operand (the memory location pointed to by ?GR).
113 * We also need to replace the library setjmp()/longjmp() with
114 * our own versions because the IAR implementation "forgets" to
115 * save the contents of local registers (?LR).
119 void * sp; /* Stack pointer */
120 void * return_addr; /* Return address */
121 int lr[6]; /* 6 local registers */
124 typedef struct _JMP_BUF jmp_buf[1];
126 int setjmp(jmp_buf env);
127 void longjmp(jmp_buf env, int val);
129 /* Fake bool support */
132 typedef unsigned char bool;
134 #elif defined(_MSC_VER) /* Win32 emulation support */
137 #include <time.h> /* for time_t */
139 /* FIXME: I can't remember why exactly this was needed (NdBernie) */
142 /* Fake bool support */
147 #endif /* !__cplusplus */
149 /* These C99 functions are oddly named in MSVCRT32.lib */
150 #define snprintf _snprintf
151 #define vsnprintf _vsnprintf
153 #elif defined(__GNUC__)
156 #define FORMAT(type,fmt,first) __attribute__((__format__(type, fmt, first)))
157 #define NORETURN __attribute__((__noreturn__))
158 #define UNUSED(type,arg) __attribute__((__unused__)) type arg
159 #define INLINE static inline __attribute__((__always_inline__))
160 #define LIKELY(x) __builtin_expect((x), 1)
161 #define UNLIKELY(x) __builtin_expect((x), 0)
162 #define RESTRICT __restrict__
164 #define DEPRECATED __attribute__((__deprecated__))
169 /* Hack to avoid conflicts with system type */
170 #define sigset_t system_sigset_t
174 #undef system_sigset_t
181 /* Missing printf-family functions in avr-libc/stdio.h */
183 #include <avr/pgmspace.h>
184 int vsprintf_P(char *buf, const char * PROGMEM fmt, va_list ap);
186 /* Support for harvard architectures */
188 #define PGM_READ_CHAR(s) pgm_read_byte(s)
189 #define PGM_FUNC(x) x ## _P
190 #define PGM_ATTR PROGMEM
195 #elif defined(__MWERKS__) && CPU_DSP56K
202 // CodeWarrior has size_t as built-in type, but does not define this symbol.
203 #define _SIZE_T_DEFINED
206 #error unknown compiler
210 /* A few defaults for missing compiler features. */
212 #define INLINE static inline
215 #define NORETURN /* nothing */
218 #define FORMAT(type,fmt,first) /* nothing */
221 #define DEPRECATED /* nothing */
224 #define UNUSED(type,arg) type arg
227 #define REGISTER /* nothing */
230 #define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
236 #define UNLIKELY(x) x
242 /* Support for harvard architectures */
244 #define PSTR /* nothing */
246 #ifndef PGM_READ_CHAR
247 #define PGM_READ_CHAR(s) (*(s))
250 #define PGM_FUNC(x) x
253 #define PGM_ATTR /* nothing */
257 /* Misc definitions */
259 #define NULL (void *)0
266 /* Support for hybrid C/C++ applications. */
268 #define EXTERN_C_BEGIN extern "C" {
269 #define EXTERN_C_END }
271 #define EXTERN_C_BEGIN /* nothing */
272 #define EXTERN_C_END /* nothing */
277 * Standard type definitions.
278 * These should be in <sys/types.h>, but many compilers lack them.
280 #if !(defined(size_t) || defined(_SIZE_T_DEFINED))
281 typedef unsigned int size_t;
284 #if !(defined(_TIME_T_DEFINED) || defined(__time_t_defined))
286 #endif /* _TIME_T_DEFINED || __time_t_defined */
288 /*! Bulk storage large enough for both pointers or integers */
289 typedef void * iptr_t;
290 typedef const void * const_iptr_t;
291 #define IPTR iptr_t /* OBSOLETE */
293 typedef long utime_t; /*!< Type for time expressed in microseconds */
294 typedef unsigned char sig_t; /*!< Type for signal bits */
295 typedef unsigned char sigset_t; /*!< Type for signal masks */
296 typedef unsigned char page_t; /*!< Type for banked memory pages */
298 #if (defined(_MSC_VER) || defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__))
300 * \name ISO C99 fixed-size types
302 * These should be in <stdint.h>, but many compilers lack them.
305 typedef signed char int8_t;
306 typedef short int int16_t;
307 typedef long int int32_t;
308 typedef unsigned char uint8_t;
309 typedef unsigned short int uint16_t;
310 typedef unsigned long int uint32_t;
312 #elif defined(__GNUC__) && CPU_AVR
313 /* avr-libc is weird... */
314 #include <inttypes.h>
316 /* This is the correct location. */
321 * \name Types for hardware registers.
323 * Only use these types for registers whose contents can
324 * be changed asynchronously by external hardware.
329 /* Registers can be accessed only through 16-bit pointers */
330 typedef volatile uint16_t reg16_t;
332 typedef volatile uint8_t reg8_t;
333 typedef volatile uint16_t reg16_t;
334 typedef volatile uint32_t reg32_t;
339 /* Quasi-ANSI macros */
342 * Return the byte offset of the member \a m in struct \a s.
344 * \note This macro should be defined in "stddef.h" and is sometimes
345 * compiler-specific (g++ has a builtin for it).
347 #define offsetof(s,m) (size_t)&(((s *)0)->m)
351 * Count the number of elements in the static array \a a.
353 * \note This macro is non-standard, but implements a very common idiom
355 #define countof(a) (sizeof(a) / sizeof(*(a)))
358 /*! Issue a compilation error if the \a condition is false */
359 #define STATIC_ASSERT(condition) \
360 extern char PP_CAT(CT_ASSERT___, __LINE__)[(condition) ? 1 : -1]
362 #endif /* DEVLIB_COMPILER_H */