1 /***************************************************************************/
5 /* ANSI-specific configuration file (specification only). */
7 /* Copyright 1996-2004, 2006-2008, 2010-2011 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
16 /***************************************************************************/
19 /*************************************************************************/
21 /* This header file contains a number of macro definitions that are used */
22 /* by the rest of the engine. Most of the macros here are automatically */
23 /* determined at compile time, and you should not need to change it to */
24 /* port FreeType, except to compile the library with a non-ANSI */
27 /* Note however that if some specific modifications are needed, we */
28 /* advise you to place a modified copy in your build directory. */
30 /* The build directory is usually `freetype/builds/<system>', and */
31 /* contains system-specific files that are always included first when */
32 /* building the library. */
34 /* This ANSI version should stay in `include/freetype/config'. */
36 /*************************************************************************/
38 #ifndef __FTCONFIG_H__
39 #define __FTCONFIG_H__
42 #include FT_CONFIG_OPTIONS_H
43 #include FT_CONFIG_STANDARD_LIBRARY_H
49 /*************************************************************************/
51 /* PLATFORM-SPECIFIC CONFIGURATION MACROS */
53 /* These macros can be toggled to suit a specific system. The current */
54 /* ones are defaults used to compile FreeType in an ANSI C environment */
55 /* (16bit compilers are also supported). Copy this file to your own */
56 /* `freetype/builds/<system>' directory, and edit it to port the engine. */
58 /*************************************************************************/
61 /* There are systems (like the Texas Instruments 'C54x) where a `char' */
62 /* has 16 bits. ANSI C says that sizeof(char) is always 1. Since an */
63 /* `int' has 16 bits also for this system, sizeof(int) gives 1 which */
64 /* is probably unexpected. */
66 /* `CHAR_BIT' (defined in limits.h) gives the number of bits in a */
70 #define FT_CHAR_BIT CHAR_BIT
74 /* The size of an `int' type. */
75 #if FT_UINT_MAX == 0xFFFFUL
76 #define FT_SIZEOF_INT (16 / FT_CHAR_BIT)
77 #elif FT_UINT_MAX == 0xFFFFFFFFUL
78 #define FT_SIZEOF_INT (32 / FT_CHAR_BIT)
79 #elif FT_UINT_MAX > 0xFFFFFFFFUL && FT_UINT_MAX == 0xFFFFFFFFFFFFFFFFUL
80 #define FT_SIZEOF_INT (64 / FT_CHAR_BIT)
82 #error "Unsupported size of `int' type!"
85 /* The size of a `long' type. A five-byte `long' (as used e.g. on the */
86 /* DM642) is recognized but avoided. */
87 #if FT_ULONG_MAX == 0xFFFFFFFFUL
88 #define FT_SIZEOF_LONG (32 / FT_CHAR_BIT)
89 #elif FT_ULONG_MAX > 0xFFFFFFFFUL && FT_ULONG_MAX == 0xFFFFFFFFFFUL
90 #define FT_SIZEOF_LONG (32 / FT_CHAR_BIT)
91 #elif FT_ULONG_MAX > 0xFFFFFFFFUL && FT_ULONG_MAX == 0xFFFFFFFFFFFFFFFFUL
92 #define FT_SIZEOF_LONG (64 / FT_CHAR_BIT)
94 #error "Unsupported size of `long' type!"
98 /* FT_UNUSED is a macro used to indicate that a given parameter is not */
99 /* used -- this is only used to get rid of unpleasant compiler warnings */
101 #define FT_UNUSED( arg ) ( (arg) = (arg) )
105 /*************************************************************************/
107 /* AUTOMATIC CONFIGURATION MACROS */
109 /* These macros are computed from the ones defined above. Don't touch */
110 /* their definition, unless you know precisely what you are doing. No */
111 /* porter should need to mess with them. */
113 /*************************************************************************/
116 /*************************************************************************/
120 /* This is the only necessary change, so it is defined here instead */
121 /* providing a new configuration file. */
123 #if defined( __APPLE__ ) || ( defined( __MWERKS__ ) && defined( macintosh ) )
124 /* no Carbon frameworks for 64bit 10.4.x */
125 /* AvailabilityMacros.h is available since Mac OS X 10.2, */
126 /* so guess the system version by maximum errno before inclusion */
128 #ifdef ECANCELED /* defined since 10.2 */
129 #include "AvailabilityMacros.h"
131 #if defined( __LP64__ ) && \
132 ( MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_4 )
136 #elif defined( __SC__ ) || defined( __MRC__ )
137 /* Classic MacOS compilers */
138 #include "ConditionalMacros.h"
140 #define FT_MACINTOSH 1
146 /*************************************************************************/
151 /*************************************************************************/
154 /*************************************************************************/
160 /* A typedef for a 16bit signed integer type. */
162 typedef signed short FT_Int16;
165 /*************************************************************************/
171 /* A typedef for a 16bit unsigned integer type. */
173 typedef unsigned short FT_UInt16;
178 /* this #if 0 ... #endif clause is for documentation purposes */
181 /*************************************************************************/
187 /* A typedef for a 32bit signed integer type. The size depends on */
188 /* the configuration. */
190 typedef signed XXX FT_Int32;
193 /*************************************************************************/
198 /* A typedef for a 32bit unsigned integer type. The size depends on */
199 /* the configuration. */
201 typedef unsigned XXX FT_UInt32;
207 #if FT_SIZEOF_INT == (32 / FT_CHAR_BIT)
209 typedef signed int FT_Int32;
210 typedef unsigned int FT_UInt32;
212 #elif FT_SIZEOF_LONG == (32 / FT_CHAR_BIT)
214 typedef signed long FT_Int32;
215 typedef unsigned long FT_UInt32;
218 #error "no 32bit type found -- please check your configuration files"
222 /* look up an integer type that is at least 32 bits */
223 #if FT_SIZEOF_INT >= (32 / FT_CHAR_BIT)
226 typedef unsigned int FT_UFast;
228 #elif FT_SIZEOF_LONG >= (32 / FT_CHAR_BIT)
230 typedef long FT_Fast;
231 typedef unsigned long FT_UFast;
236 /* determine whether we have a 64-bit int type for platforms without */
238 #if FT_SIZEOF_LONG == (64 / FT_CHAR_BIT)
240 /* FT_LONG64 must be defined if a 64-bit type is available */
242 #define FT_INT64 long
244 #elif defined( _MSC_VER ) && _MSC_VER >= 900 /* Visual C++ (and Intel C++) */
246 /* this compiler provides the __int64 type */
248 #define FT_INT64 __int64
250 #elif defined( __BORLANDC__ ) /* Borland C++ */
252 /* XXXX: We should probably check the value of __BORLANDC__ in order */
253 /* to test the compiler version. */
255 /* this compiler provides the __int64 type */
257 #define FT_INT64 __int64
259 #elif defined( __WATCOMC__ ) /* Watcom C++ */
261 /* Watcom doesn't provide 64-bit data types */
263 #elif defined( __MWERKS__ ) /* Metrowerks CodeWarrior */
266 #define FT_INT64 long long int
268 #elif defined( __GNUC__ )
270 /* GCC provides the `long long' type */
272 #define FT_INT64 long long int
274 #endif /* FT_SIZEOF_LONG == (64 / FT_CHAR_BIT) */
277 /*************************************************************************/
279 /* A 64-bit data type will create compilation problems if you compile */
280 /* in strict ANSI mode. To avoid them, we disable its use if __STDC__ */
281 /* is defined. You can however ignore this rule by defining the */
282 /* FT_CONFIG_OPTION_FORCE_INT64 configuration macro. */
284 #if defined( FT_LONG64 ) && !defined( FT_CONFIG_OPTION_FORCE_INT64 )
288 /* undefine the 64-bit macros in strict ANSI compilation mode */
292 #endif /* __STDC__ */
294 #endif /* FT_LONG64 && !FT_CONFIG_OPTION_FORCE_INT64 */
297 #define FT_BEGIN_STMNT do {
298 #define FT_END_STMNT } while ( 0 )
299 #define FT_DUMMY_STMNT FT_BEGIN_STMNT FT_END_STMNT
302 #ifndef FT_CONFIG_OPTION_NO_ASSEMBLER
303 /* Provide assembler fragments for performance-critical functions. */
304 /* These must be defined `static __inline__' with GCC. */
306 #if defined( __CC_ARM ) || defined( __ARMCC__ ) /* RVCT */
307 #define FT_MULFIX_ASSEMBLER FT_MulFix_arm
309 /* documentation is in freetype.h */
311 static __inline FT_Int32
312 FT_MulFix_arm( FT_Int32 a,
315 register FT_Int32 t, t2;
320 smull t2, t, b, a /* (lo=t2,hi=t) = a*b */
321 mov a, t, asr #31 /* a = (hi >> 31) */
322 add a, a, #0x8000 /* a += 0x8000 */
323 adds t2, t2, a /* t2 += a */
324 adc t, t, #0 /* t += carry */
325 mov a, t2, lsr #16 /* a = t2 >> 16 */
326 orr a, a, t, lsl #16 /* a |= t << 16 */
331 #endif /* __CC_ARM || __ARMCC__ */
336 #if defined( __arm__ ) && !defined( __thumb__ ) && \
337 !( defined( __CC_ARM ) || defined( __ARMCC__ ) )
338 #define FT_MULFIX_ASSEMBLER FT_MulFix_arm
340 /* documentation is in freetype.h */
342 static __inline__ FT_Int32
343 FT_MulFix_arm( FT_Int32 a,
346 register FT_Int32 t, t2;
349 __asm__ __volatile__ (
350 "smull %1, %2, %4, %3\n\t" /* (lo=%1,hi=%2) = a*b */
351 "mov %0, %2, asr #31\n\t" /* %0 = (hi >> 31) */
352 "add %0, %0, #0x8000\n\t" /* %0 += 0x8000 */
353 "adds %1, %1, %0\n\t" /* %1 += %0 */
354 "adc %2, %2, #0\n\t" /* %2 += carry */
355 "mov %0, %1, lsr #16\n\t" /* %0 = %1 >> 16 */
356 "orr %0, %0, %2, lsl #16\n\t" /* %0 |= %2 << 16 */
357 : "=r"(a), "=&r"(t2), "=&r"(t)
362 #endif /* __arm__ && !__thumb__ && !( __CC_ARM || __ARMCC__ ) */
364 #if defined( __i386__ )
365 #define FT_MULFIX_ASSEMBLER FT_MulFix_i386
367 /* documentation is in freetype.h */
369 static __inline__ FT_Int32
370 FT_MulFix_i386( FT_Int32 a,
373 register FT_Int32 result;
376 __asm__ __volatile__ (
378 "movl %%edx, %%ecx\n"
380 "addl $0x8000, %%ecx\n"
381 "addl %%ecx, %%eax\n"
385 "addl %%edx, %%eax\n"
386 : "=a"(result), "=d"(b)
394 #endif /* __GNUC__ */
397 #ifdef _MSC_VER /* Visual C++ */
401 #define FT_MULFIX_ASSEMBLER FT_MulFix_i386
403 /* documentation is in freetype.h */
405 static __inline FT_Int32
406 FT_MulFix_i386( FT_Int32 a,
409 register FT_Int32 result;
431 #endif /* _MSC_VER */
433 #endif /* !FT_CONFIG_OPTION_NO_ASSEMBLER */
436 #ifdef FT_CONFIG_OPTION_INLINE_MULFIX
437 #ifdef FT_MULFIX_ASSEMBLER
438 #define FT_MULFIX_INLINED FT_MULFIX_ASSEMBLER
443 #ifdef FT_MAKE_OPTION_SINGLE_OBJECT
445 #define FT_LOCAL( x ) static x
446 #define FT_LOCAL_DEF( x ) static x
451 #define FT_LOCAL( x ) extern "C" x
452 #define FT_LOCAL_DEF( x ) extern "C" x
454 #define FT_LOCAL( x ) extern x
455 #define FT_LOCAL_DEF( x ) x
458 #endif /* FT_MAKE_OPTION_SINGLE_OBJECT */
464 #define FT_BASE( x ) extern "C" x
466 #define FT_BASE( x ) extern x
469 #endif /* !FT_BASE */
475 #define FT_BASE_DEF( x ) x
477 #define FT_BASE_DEF( x ) x
480 #endif /* !FT_BASE_DEF */
486 #define FT_EXPORT( x ) extern "C" x
488 #define FT_EXPORT( x ) extern x
491 #endif /* !FT_EXPORT */
494 #ifndef FT_EXPORT_DEF
497 #define FT_EXPORT_DEF( x ) extern "C" x
499 #define FT_EXPORT_DEF( x ) extern x
502 #endif /* !FT_EXPORT_DEF */
505 #ifndef FT_EXPORT_VAR
508 #define FT_EXPORT_VAR( x ) extern "C" x
510 #define FT_EXPORT_VAR( x ) extern x
513 #endif /* !FT_EXPORT_VAR */
515 /* The following macros are needed to compile the library with a */
516 /* C++ compiler and with 16bit compilers. */
519 /* This is special. Within C++, you must specify `extern "C"' for */
520 /* functions which are used via function pointers, and you also */
521 /* must do that for structures which contain function pointers to */
522 /* assure C linkage -- it's not possible to have (local) anonymous */
523 /* functions which are accessed by (global) function pointers. */
526 /* FT_CALLBACK_DEF is used to _define_ a callback function. */
528 /* FT_CALLBACK_TABLE is used to _declare_ a constant variable that */
529 /* contains pointers to callback functions. */
531 /* FT_CALLBACK_TABLE_DEF is used to _define_ a constant variable */
532 /* that contains pointers to callback functions. */
535 /* Some 16bit compilers have to redefine these macros to insert */
536 /* the infamous `_cdecl' or `__fastcall' declarations. */
538 #ifndef FT_CALLBACK_DEF
540 #define FT_CALLBACK_DEF( x ) extern "C" x
542 #define FT_CALLBACK_DEF( x ) static x
544 #endif /* FT_CALLBACK_DEF */
546 #ifndef FT_CALLBACK_TABLE
548 #define FT_CALLBACK_TABLE extern "C"
549 #define FT_CALLBACK_TABLE_DEF extern "C"
551 #define FT_CALLBACK_TABLE extern
552 #define FT_CALLBACK_TABLE_DEF /* nothing */
554 #endif /* FT_CALLBACK_TABLE */
560 #endif /* __FTCONFIG_H__ */