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 1.19 2004/08/25 14:12:08 rasky
19 *#* Aggiornato il comment block dei log RCS
21 *#* Revision 1.18 2004/08/24 16:32:37 bernie
22 *#* Document custom types.
24 *#* Revision 1.17 2004/08/24 13:32:14 bernie
25 *#* PP_CAT(), PP_STRINGIZE(): Move back to compiler.h to break circular dependency between cpu.h/compiler.h/macros.h;
26 *#* offsetof(), countof(): Move back to compiler.h to avoid including macros.h almost everywhere;
28 *#* Rename header guards;
29 *#* Don't include arch_config.h in compiler.h as it's not needed there.
31 *#* Revision 1.16 2004/08/14 19:37:57 rasky
32 *#* Merge da SC: macros.h, pool.h, BIT_CHANGE, nome dei processi, etc.
34 *#* Revision 1.15 2004/08/13 03:23:26 bernie
35 *#* Adjust a few MSVC tweaks from older projects.
37 *#* Revision 1.14 2004/08/10 06:56:29 bernie
38 *#* RESTRICT: New C99-like macro; STATIC_ASSERT: Fix warning for multiple invocation in one file.
40 *#* Revision 1.13 2004/08/02 20:20:29 aleph
41 *#* Merge from project_ks
43 *#* Revision 1.12 2004/08/01 01:21:17 bernie
44 *#* LIKELY(), UNLIKELY(): New compiler-specific macros.
46 *#* Revision 1.11 2004/07/30 14:34:10 rasky
47 *#* Vari fix per documentazione e commenti
48 *#* Aggiunte PP_CATn e STATIC_ASSERT
50 *#* Revision 1.10 2004/07/30 14:15:53 rasky
51 *#* Nuovo supporto unificato per detect della CPU
53 *#* Revision 1.9 2004/07/29 22:57:09 bernie
54 *#* vsprintf(): Remove prototype for backwards compatibility with GCC 3.4; ssize_t: Add definition for inferior compilers.
56 #ifndef DEVLIB_COMPILER_H
57 #define DEVLIB_COMPILER_H
59 #include "cpu_detect.h"
62 #if defined __GNUC__ && defined __GNUC_MINOR__
63 #define GNUC_PREREQ(maj, min) \
64 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
66 #define GNUC_PREREQ(maj, min) 0
69 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
70 #define COMPILER_C99 1
72 #define COMPILER_C99 0
76 /*! Concatenate two different preprocessor tokens (allowing macros to expand) */
77 #define PP_CAT(x,y) PP_CAT__(x,y)
78 #define PP_CAT__(x,y) x ## y
79 #define PP_CAT3(x,y,z) PP_CAT(PP_CAT(x,y),z)
80 #define PP_CAT4(x,y,z,w) PP_CAT(PP_CAT3(x,y,z),w)
81 #define PP_CAT5(x,y,z,w,j) PP_CAT(PP_CAT4(x,y,z,w),j)
83 /*! String-ize a token (allowing macros to expand) */
84 #define PP_STRINGIZE(x) PP_STRINGIZE__(x)
85 #define PP_STRINGIZE__(x) #x
88 #if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
89 #pragma language=extended
90 #define INTERRUPT(x) interrupt [x]
91 #define REGISTER shortad
92 #define INLINE /* unsupported */
94 /* Imported from <longjmp.h>. Unfortunately, we can't just include
95 * this header because it typedefs jmp_buf to be an array of chars.
96 * This would allow the compiler to place the buffer on an odd address.
97 * The CPU _should_ be able to perform word accesses to
98 * unaligned data, but there are *BUGS* in the 80196KC with
99 * some combinations of opcodes and addressing modes. One of
100 * these, "ST SP,[?GR]+" is used in the longjmp() implementation
101 * provided by the IAR compiler ANSI C library. When ?GR contains
102 * an odd address, surprisingly the CPU will copy the high order
103 * byte of the source operand (SP) in the low order byte of the
104 * destination operand (the memory location pointed to by ?GR).
106 * We also need to replace the library setjmp()/longjmp() with
107 * our own versions because the IAR implementation "forgets" to
108 * save the contents of local registers (?LR).
112 void * sp; /* Stack pointer */
113 void * return_addr; /* Return address */
114 int lr[6]; /* 6 local registers */
117 typedef struct _JMP_BUF jmp_buf[1];
119 int setjmp(jmp_buf env);
120 void longjmp(jmp_buf env, int val);
122 /* Fake bool support */
125 typedef unsigned char bool;
127 #elif defined(_MSC_VER) /* Win32 emulation support */
130 #include <time.h> /* for time_t */
132 /* FIXME: I can't remember why exactly this was needed (NdBernie) */
135 /* Fake bool support */
140 #endif /* !__cplusplus */
142 /* These C99 functions are oddly named in MSVCRT32.lib */
143 #define snprintf _snprintf
144 #define vsnprintf _vsnprintf
146 #elif defined(__GNUC__)
149 #define FORMAT(type,fmt,first) __attribute__((__format__(type, fmt, first)))
150 #define NORETURN __attribute__((__noreturn__))
151 #define UNUSED(type,arg) __attribute__((__unused__)) type arg
152 #define INLINE static inline __attribute__((__always_inline__))
153 #define LIKELY(x) __builtin_expect((x), 1)
154 #define UNLIKELY(x) __builtin_expect((x), 0)
155 #define RESTRICT __restrict__
157 #define DEPRECATED __attribute__((__deprecated__))
162 /* hack to avoid conflicts with system type */
163 #define sigset_t system_sigset_t
167 #undef system_sigset_t
174 /* Missing printf-family functions in avr-libc/stdio.h */
176 #include <avr/pgmspace.h>
177 int vsprintf_P(char *buf, const char * PROGMEM fmt, va_list ap);
179 /* Support for harvard architectures */
181 #define PGM_READ_CHAR(s) pgm_read_byte(s)
182 #define PGM_FUNC(x) x ## _P
183 #define PGM_ATTR PROGMEM
188 #elif defined(__MWERKS__) && CPU_DSP56K
195 // CodeWarrior has size_t as built-in type, but does not define this symbol.
196 #define _SIZE_T_DEFINED
199 #error unknown compiler
203 /* A few defaults for missing compiler features. */
205 #define INLINE static inline
208 #define NORETURN /* nothing */
211 #define FORMAT(type,fmt,first) /* nothing */
214 #define DEPRECATED /* nothing */
217 #define UNUSED(type,arg) type arg
220 #define REGISTER /* nothing */
223 #define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
229 #define UNLIKELY(x) x
235 /* Support for harvard architectures */
237 #define PSTR /* nothing */
239 #ifndef PGM_READ_CHAR
240 #define PGM_READ_CHAR(s) (*(s))
243 #define PGM_FUNC(x) x
246 #define PGM_ATTR /* nothing */
250 /* Misc definitions */
252 #define NULL (void *)0
259 /* Support for hybrid C/C++ applications. */
261 #define EXTERN_C_BEGIN extern "C" {
262 #define EXTERN_C_END }
264 #define EXTERN_C_BEGIN /* nothing */
265 #define EXTERN_C_END /* nothing */
270 * Standard type definitions
271 * These should be in <sys/types.h>, but many compilers lack them.
273 #if !(defined(size_t) || defined(_SIZE_T_DEFINED))
274 typedef unsigned int size_t;
277 #if !(defined(_TIME_T_DEFINED) || defined(__time_t_defined))
279 #endif /* _TIME_T_DEFINED || __time_t_defined */
281 /*! Storage for pointers and integers */
282 /* FIXME: turn this into a typedef? */
285 typedef long utime_t; /*!< Type for time expressed in microseconds */
286 typedef unsigned char sig_t; /*!< Type for signal bits */
287 typedef unsigned char sigset_t; /*!< Type for signal masks */
288 typedef unsigned char page_t; /*!< Type for banked memory pages */
290 #if (defined(_MSC_VER) || defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__))
292 * \name ISO C99 fixed-size types
294 * These should be in <stdint.h>, but many compilers lack them.
297 typedef signed char int8_t;
298 typedef short int int16_t;
299 typedef long int int32_t;
300 typedef unsigned char uint8_t;
301 typedef unsigned short int uint16_t;
302 typedef unsigned long int uint32_t;
304 #elif defined(__GNUC__) && defined(__AVR__)
305 /* avr-libc is weird... */
306 #include <inttypes.h>
308 /* This is the correct location. */
313 * \name Types for hardware registers.
315 * Only use these types for registers whose contents can
316 * be changed asynchronously by external hardware.
321 /* Registers can be accessed only through 16-bit pointers */
322 typedef volatile uint16_t reg16_t;
324 typedef volatile uint8_t reg8_t;
325 typedef volatile uint16_t reg16_t;
326 typedef volatile uint32_t reg32_t;
331 /* Quasi-ANSI macros */
334 * Return the byte offset of the member \a m in struct \a s
336 * \note This macro should be defined in "stddef.h" and is sometimes
337 * compiler-specific (g++ has a builtin for it).
339 #define offsetof(s,m) (size_t)&(((s *)0)->m)
343 * Count the number of elements in the static array \a a
345 * \note This macro is non-standard, but implmenents a very common idiom
347 #define countof(a) (sizeof(a) / sizeof(*(a)))
350 #endif /* DEVLIB_COMPILER_H */