4 * Copyright 2003, 2004, 2005 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 README.devlib for information.
9 * \brief Additional support macros for compiler independance
12 * \author Bernardo Innocenti <bernie@develer.com>
17 *#* Revision 1.9 2006/02/10 12:38:00 bernie
18 *#* Add support for ARM on IAR.
20 *#* Revision 1.8 2006/01/16 03:27:49 bernie
21 *#* Rename sig_t to sigbit_t to avoid clash with POSIX.
23 *#* Revision 1.7 2005/11/27 23:33:05 bernie
24 *#* Drop avr-libc hack for missing stdint.h.
26 *#* Revision 1.6 2005/07/19 07:27:31 bernie
27 *#* Don't use CPU_REG_BITS from cpu.h to avoid circular header dependendy.
29 *#* Revision 1.5 2005/06/27 21:24:37 bernie
30 *#* ticks_t: New typedef.
32 *#* Revision 1.4 2005/06/14 06:15:10 bernie
33 *#* Add X86_64 support.
35 *#* Revision 1.3 2005/04/12 01:37:01 bernie
36 *#* Metrowerks touchups from HeCo.
38 *#* Revision 1.2 2005/04/11 19:10:27 bernie
39 *#* Include top-level headers from cfg/ subdir.
41 *#* Revision 1.1 2005/04/11 19:04:13 bernie
42 *#* Move top-level headers to cfg/ subdir.
44 *#* Revision 1.44 2005/03/29 06:39:59 bernie
45 *#* setjmp.h, time_t: Remove ancient retrocompatibility; Remove MSVC double to float hack.
47 *#* Revision 1.43 2005/03/01 23:15:12 bernie
48 *#* Remove compatibility hack.
50 *#* Revision 1.42 2005/02/16 20:28:46 bernie
51 *#* Move PGM macros to mware/pgm.h
53 *#* Revision 1.41 2005/01/22 04:19:22 bernie
54 *#* MTIME_INFINITE: New constant.
56 *#* Revision 1.40 2005/01/20 18:46:04 aleph
57 *#* Add progmem datatypes; PSTR() definition.
59 #ifndef DEVLIB_COMPILER_H
60 #define DEVLIB_COMPILER_H
62 #include <cfg/cpu_detect.h>
65 #if defined __GNUC__ && defined __GNUC_MINOR__
66 #define GNUC_PREREQ(maj, min) \
67 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
69 #define GNUC_PREREQ(maj, min) 0
72 /* Some CW versions do not allow enabling C99 from the settings panel. */
73 #if defined(__MWERKS__)
77 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
78 #define COMPILER_C99 1
80 #define COMPILER_C99 0
84 /*! Concatenate two different preprocessor tokens (allowing macros to expand) */
85 #define PP_CAT(x,y) PP_CAT__(x,y)
86 #define PP_CAT__(x,y) x ## y
87 #define PP_CAT3(x,y,z) PP_CAT(PP_CAT(x,y),z)
88 #define PP_CAT4(x,y,z,w) PP_CAT(PP_CAT3(x,y,z),w)
89 #define PP_CAT5(x,y,z,w,j) PP_CAT(PP_CAT4(x,y,z,w),j)
91 /*! String-ize a token (allowing macros to expand) */
92 #define PP_STRINGIZE(x) PP_STRINGIZE__(x)
93 #define PP_STRINGIZE__(x) #x
96 #if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
98 #pragma language=extended
100 // IAR has size_t as built-in type, but does not define this symbol.
101 #define _SIZE_T_DEFINED
105 #define COMPILER_VARIADIC_MACROS 1
107 #define INTERRUPT(x) __irq __arm void x (void)
108 #define REGISTER register
109 #define INLINE static inline
111 /* Include some standard C89/C99 stuff */
117 #define INTERRUPT(x) interrupt [x]
118 #define REGISTER shortad
119 #define INLINE /* unsupported */
122 * Imported from <longjmp.h>. Unfortunately, we can't just include
123 * this header because it typedefs jmp_buf to be an array of chars.
124 * This would allow the compiler to place the buffer on an odd address.
125 * The CPU _should_ be able to perform word accesses to
126 * unaligned data, but there are *BUGS* in the 80196KC with
127 * some combinations of opcodes and addressing modes. One of
128 * these, "ST SP,[?GR]+" is used in the longjmp() implementation
129 * provided by the IAR compiler ANSI C library. When ?GR contains
130 * an odd address, surprisingly the CPU will copy the high order
131 * byte of the source operand (SP) in the low order byte of the
132 * destination operand (the memory location pointed to by ?GR).
134 * We also need to replace the library setjmp()/longjmp() with
135 * our own versions because the IAR implementation "forgets" to
136 * save the contents of local registers (?LR).
140 void *sp; /* Stack pointer */
141 void *return_addr; /* Return address */
142 int lr[6]; /* 6 local registers */
145 typedef struct _JMP_BUF jmp_buf[1];
147 int setjmp(jmp_buf env);
148 void longjmp(jmp_buf env, int val);
150 /* Fake bool support */
153 typedef unsigned char bool;
155 #endif /* !CPU_I196 */
157 #elif defined(_MSC_VER) /* Win32 emulation support */
159 /* MSVC doesn't provide <stdbool.h>. */
164 #endif /* !__cplusplus */
166 /* These C99 functions are oddly named in MSVCRT32.lib */
167 #define snprintf _snprintf
168 #define vsnprintf _vsnprintf
170 #elif defined(__GNUC__)
172 /* Compiler features */
173 #define COMPILER_VARIADIC_MACROS 1 /* Even in C++ */
174 #define COMPILER_TYPEOF 1
175 #define COMPILER_STATEMENT_EXPRESSIONS 1
178 #define FORMAT(type,fmt,first) __attribute__((__format__(type, fmt, first)))
179 #define NORETURN __attribute__((__noreturn__))
180 #define UNUSED_ARG(type,arg) __attribute__((__unused__)) type arg
181 #define UNUSED_VAR(type,name) __attribute__((__unused__)) type name
182 #define USED_VAR(type,name) __attribute__((__used__)) type name
183 #define INLINE static inline __attribute__((__always_inline__))
184 #define LIKELY(x) __builtin_expect(!!(x), 1)
185 #define UNLIKELY(x) __builtin_expect(!!(x), 0)
186 #define PURE_FUNC __attribute__((pure))
187 #define CONST_FUNC __attribute__((const))
188 #define UNUSED_FUNC __attribute__((unused))
189 #define USED_FUNC __attribute__((__used__))
190 #define RESTRICT __restrict__
191 #define MUST_CHECK __attribute__((warn_unused_result))
193 #define DEPRECATED __attribute__((__deprecated__))
196 /* Include some standard C89/C99 stuff */
202 * Disallow some C++ keywords as identifiers in C programs,
203 * for improved portability.
205 #pragma GCC poison new delete class template typename
206 #pragma GCC poison private protected public operator
207 #pragma GCC poison friend mutable using namespace
208 #pragma GCC poison cin cout cerr clog
211 #elif defined(__MWERKS__)
213 /* Compiler features */
214 #define COMPILER_VARIADIC_MACROS 1
215 #define COMPILER_TYPEOF 1
216 #define COMPILER_STATEMENT_EXPRESSIONS 1
218 #define typeof __typeof__
220 #define UNUSED_ARG(type,arg) type
226 // CodeWarrior has size_t as built-in type, but does not define this symbol.
227 #define _SIZE_T_DEFINED
230 #error unknown compiler
234 /* Defaults for compiler extensions. */
237 * \def COMPILER_VARIADIC_MACROS
238 * Support for macros with variable arguments.
240 #ifndef COMPILER_VARIADIC_MACROS
241 #define COMPILER_VARIADIC_MACROS (COMPILER_C99 != 0)
245 * \def COMPILER_TYPEOF
246 * Support for dynamic type identification.
248 #ifndef COMPILER_TYPEOF
249 #define COMPILER_TYPEOF 0
253 * \def COMPILER_STATEMENT_EXPRESSIONS
254 * Support for statement expressions.
256 #ifndef COMPILER_STATEMENT_EXPRESSIONS
257 #define COMPILER_STATEMENT_EXPRESSIONS 0
260 /* A few defaults for missing compiler features. */
262 #define INLINE static inline
265 #define NORETURN /* nothing */
268 #define FORMAT(type,fmt,first) /* nothing */
271 #define DEPRECATED /* nothing */
274 #define UNUSED_ARG(type,arg) type arg
276 #define UNUSED UNUSED_ARG /* OBSOLETE */
278 #define UNUSED_VAR(type,name) type name
281 #define USED_VAR(type,name) type name
284 #define REGISTER /* nothing */
287 #define INTERRUPT(x) ERROR_NOT_IMPLEMENTED
293 #define UNLIKELY(x) x
296 #define PURE_FUNC /* nothing */
299 #define CONST_FUNC /* nothing */
302 #define UNUSED_FUNC /* nothing */
305 #define USED_FUNC /* nothing */
308 #define RESTRICT /* nothing */
311 #define MUST_CHECK /* nothing */
314 /* Misc definitions */
316 #define NULL (void *)0
323 /* Support for hybrid C/C++ applications. */
325 #define EXTERN_C extern "C"
326 #define EXTERN_C_BEGIN extern "C" {
327 #define EXTERN_C_END }
329 #define EXTERN_C extern
330 #define EXTERN_C_BEGIN /* nothing */
331 #define EXTERN_C_END /* nothing */
335 #if (defined(_MSC_VER) || defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__))
337 * \name ISO C99 fixed-size types
339 * These should be in <stdint.h>, but many compilers lack them.
342 typedef signed char int8_t;
343 typedef unsigned char uint8_t;
344 typedef short int int16_t;
345 typedef unsigned short int uint16_t;
346 typedef long int int32_t; /* _WIN64 safe */
347 typedef unsigned long int uint32_t; /* _WIN64 safe */
350 typedef __int64 int64_t;
351 typedef unsigned __int64 uint64_t;
353 typedef long long int64_t;
354 typedef unsigned long long uint64_t;
358 /* This is the standard location. */
364 * The ATmega8 has a very small Flash, so we can't afford
365 * to link in support routines for 32bit integer arithmetic.
367 typedef int16_t ticks_t; /*!< Type for time expressed in ticks. */
368 typedef int16_t mtime_t; /*!< Type for time expressed in milliseconds. */
369 typedef int16_t utime_t; /*!< Type for time expressed in microseconds. */
370 #define SIZEOF_MTIME_T (16 / CPU_BITS_PER_CHAR)
371 #define SIZEOF_UTIME_T (16 / CPU_BITS_PER_CHAR)
372 #define MTIME_INFINITE 0x7FFFL
374 typedef int32_t ticks_t; /*!< Type for time expressed in ticks. */
375 typedef int32_t mtime_t; /*!< Type for time expressed in milliseconds. */
376 typedef int32_t utime_t; /*!< Type for time expressed in microseconds. */
377 #define SIZEOF_MTIME_T (32 / CPU_BITS_PER_CHAR)
378 #define SIZEOF_UTIME_T (32 / CPU_BITS_PER_CHAR)
379 #define MTIME_INFINITE 0x7FFFFFFFL
382 /*! Bulk storage large enough for both pointers or integers. */
383 typedef void * iptr_t;
385 /*! Bulk storage large enough for both pointers to constants or integers. */
386 typedef const void * const_iptr_t;
388 typedef unsigned char sigbit_t; /*!< Type for signal bits. */
389 typedef unsigned char sigmask_t; /*!< Type for signal masks. */
390 typedef unsigned char page_t; /*!< Type for banked memory pages. */
394 * \name Standard type definitions.
396 * These should be in <sys/types.h> or <stddef.h>, but many compilers
397 * and C libraries lack them.
399 * We check for some common definitions to avoid redefinitions:
401 * glibc, avr-libc: _SIZE_T_DEFINED
402 * Darwin libc: _BSD_SIZE_T_DEFINED_
406 #if !(defined(size_t) || defined(_SIZE_T_DEFINED) || defined(_BSD_SIZE_T_DEFINED_))
408 /* 32bit or 64bit (32bit for _WIN64). */
409 typedef unsigned long size_t;
415 #if !(defined(ssize_t) || defined(__ssize_t_defined))
417 /* 32bit or 64bit (32bit for _WIN64). */
418 typedef long ssize_t;
420 /* 16bit (missing in avr-libc's sys/types.h). */
430 * \name Types for hardware registers.
432 * Only use these types for registers whose contents can
433 * be changed asynchronously by external hardware.
438 /* Registers can be accessed only through 16-bit pointers */
439 typedef volatile uint16_t reg16_t;
441 typedef volatile uint8_t reg8_t;
442 typedef volatile uint16_t reg16_t;
443 typedef volatile uint32_t reg32_t;
448 /* Quasi-ANSI macros */
451 * Return the byte offset of the member \a m in struct \a s.
453 * \note This macro should be defined in "stddef.h" and is sometimes
454 * compiler-specific (g++ has a builtin for it).
456 #define offsetof(s,m) (size_t)&(((s *)0)->m)
460 * Count the number of elements in the static array \a a.
462 * \note This macro is non-standard, but implements a very common idiom
464 #define countof(a) (sizeof(a) / sizeof(*(a)))
467 /*! Issue a compilation error if the \a condition is false */
468 #define STATIC_ASSERT(condition) \
469 UNUSED_VAR(extern char,PP_CAT(CT_ASSERT___, __LINE__)[(condition) ? 1 : -1])
471 #endif /* DEVLIB_COMPILER_H */