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