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freetype2/include/config/ftconfig.h

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/***************************************************************************/
/* */
/* ftconfig.h */
/* */
/* ANSI-specific configuration file (specification only). */
/* */
/* Copyright 1996-2004, 2006-2008, 2010-2011, 2013 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
/* modified, and distributed under the terms of the FreeType project */
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/***************************************************************************/
/*************************************************************************/
/* */
/* This header file contains a number of macro definitions that are used */
/* by the rest of the engine. Most of the macros here are automatically */
/* determined at compile time, and you should not need to change it to */
/* port FreeType, except to compile the library with a non-ANSI */
/* compiler. */
/* */
/* Note however that if some specific modifications are needed, we */
/* advise you to place a modified copy in your build directory. */
/* */
/* The build directory is usually `builds/<system>', and contains */
/* system-specific files that are always included first when building */
/* the library. */
/* */
/* This ANSI version should stay in `include/config/'. */
/* */
/*************************************************************************/
#ifndef __FTCONFIG_H__
#define __FTCONFIG_H__
#include <ft2build.h>
#include FT_CONFIG_OPTIONS_H
#include FT_CONFIG_STANDARD_LIBRARY_H
FT_BEGIN_HEADER
/*************************************************************************/
/* */
/* PLATFORM-SPECIFIC CONFIGURATION MACROS */
/* */
/* These macros can be toggled to suit a specific system. The current */
/* ones are defaults used to compile FreeType in an ANSI C environment */
/* (16bit compilers are also supported). Copy this file to your own */
/* `builds/<system>' directory, and edit it to port the engine. */
/* */
/*************************************************************************/
/* There are systems (like the Texas Instruments 'C54x) where a `char' */
/* has 16 bits. ANSI C says that sizeof(char) is always 1. Since an */
/* `int' has 16 bits also for this system, sizeof(int) gives 1 which */
/* is probably unexpected. */
/* */
/* `CHAR_BIT' (defined in limits.h) gives the number of bits in a */
/* `char' type. */
#ifndef FT_CHAR_BIT
#define FT_CHAR_BIT CHAR_BIT
#endif
/* The size of an `int' type. */
#if FT_UINT_MAX == 0xFFFFUL
#define FT_SIZEOF_INT (16 / FT_CHAR_BIT)
#elif FT_UINT_MAX == 0xFFFFFFFFUL
#define FT_SIZEOF_INT (32 / FT_CHAR_BIT)
#elif FT_UINT_MAX > 0xFFFFFFFFUL && FT_UINT_MAX == 0xFFFFFFFFFFFFFFFFUL
#define FT_SIZEOF_INT (64 / FT_CHAR_BIT)
#else
#error "Unsupported size of `int' type!"
#endif
/* The size of a `long' type. A five-byte `long' (as used e.g. on the */
/* DM642) is recognized but avoided. */
#if FT_ULONG_MAX == 0xFFFFFFFFUL
#define FT_SIZEOF_LONG (32 / FT_CHAR_BIT)
#elif FT_ULONG_MAX > 0xFFFFFFFFUL && FT_ULONG_MAX == 0xFFFFFFFFFFUL
#define FT_SIZEOF_LONG (32 / FT_CHAR_BIT)
#elif FT_ULONG_MAX > 0xFFFFFFFFUL && FT_ULONG_MAX == 0xFFFFFFFFFFFFFFFFUL
#define FT_SIZEOF_LONG (64 / FT_CHAR_BIT)
#else
#error "Unsupported size of `long' type!"
#endif
/* FT_UNUSED is a macro used to indicate that a given parameter is not */
/* used -- this is only used to get rid of unpleasant compiler warnings */
#ifndef FT_UNUSED
#define FT_UNUSED( arg ) ( (arg) = (arg) )
#endif
/*************************************************************************/
/* */
/* AUTOMATIC CONFIGURATION MACROS */
/* */
/* These macros are computed from the ones defined above. Don't touch */
/* their definition, unless you know precisely what you are doing. No */
/* porter should need to mess with them. */
/* */
/*************************************************************************/
/*************************************************************************/
/* */
/* Mac support */
/* */
/* This is the only necessary change, so it is defined here instead */
/* providing a new configuration file. */
/* */
#if defined( __APPLE__ ) || ( defined( __MWERKS__ ) && defined( macintosh ) )
/* no Carbon frameworks for 64bit 10.4.x */
/* AvailabilityMacros.h is available since Mac OS X 10.2, */
/* so guess the system version by maximum errno before inclusion */
#include <errno.h>
#ifdef ECANCELED /* defined since 10.2 */
#include "AvailabilityMacros.h"
#endif
#if defined( __LP64__ ) && \
( MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_4 )
#undef FT_MACINTOSH
#endif
#elif defined( __SC__ ) || defined( __MRC__ )
/* Classic MacOS compilers */
#include "ConditionalMacros.h"
#if TARGET_OS_MAC
#define FT_MACINTOSH 1
#endif
#endif
/*************************************************************************/
/* */
/* <Section> */
/* basic_types */
/* */
/*************************************************************************/
/*************************************************************************/
/* */
/* <Type> */
/* FT_Int16 */
/* */
/* <Description> */
/* A typedef for a 16bit signed integer type. */
/* */
typedef signed short FT_Int16;
/*************************************************************************/
/* */
/* <Type> */
/* FT_UInt16 */
/* */
/* <Description> */
/* A typedef for a 16bit unsigned integer type. */
/* */
typedef unsigned short FT_UInt16;
/* */
/* this #if 0 ... #endif clause is for documentation purposes */
#if 0
/*************************************************************************/
/* */
/* <Type> */
/* FT_Int32 */
/* */
/* <Description> */
/* A typedef for a 32bit signed integer type. The size depends on */
/* the configuration. */
/* */
typedef signed XXX FT_Int32;
/*************************************************************************/
/* */
/* <Type> */
/* FT_UInt32 */
/* */
/* A typedef for a 32bit unsigned integer type. The size depends on */
/* the configuration. */
/* */
typedef unsigned XXX FT_UInt32;
/*************************************************************************/
/* */
/* <Type> */
/* FT_Int64 */
/* */
/* A typedef for a 64bit signed integer type. The size depends on */
/* the configuration. Only defined if there is real 64bit support; */
/* otherwise, it gets emulated with a structure (if necessary). */
/* */
typedef signed XXX FT_Int64;
/*************************************************************************/
/* */
/* <Type> */
/* FT_UInt64 */
/* */
/* A typedef for a 64bit unsigned integer type. The size depends on */
/* the configuration. Only defined if there is real 64bit support; */
/* otherwise, it gets emulated with a structure (if necessary). */
/* */
typedef unsigned XXX FT_UInt64;
/* */
#endif
#if FT_SIZEOF_INT == (32 / FT_CHAR_BIT)
typedef signed int FT_Int32;
typedef unsigned int FT_UInt32;
#elif FT_SIZEOF_LONG == (32 / FT_CHAR_BIT)
typedef signed long FT_Int32;
typedef unsigned long FT_UInt32;
#else
#error "no 32bit type found -- please check your configuration files"
#endif
/* look up an integer type that is at least 32 bits */
#if FT_SIZEOF_INT >= (32 / FT_CHAR_BIT)
typedef int FT_Fast;
typedef unsigned int FT_UFast;
#elif FT_SIZEOF_LONG >= (32 / FT_CHAR_BIT)
typedef long FT_Fast;
typedef unsigned long FT_UFast;
#endif
/* determine whether we have a 64-bit int type for platforms without */
/* Autoconf */
#if FT_SIZEOF_LONG == (64 / FT_CHAR_BIT)
/* FT_LONG64 must be defined if a 64-bit type is available */
#define FT_LONG64
#define FT_INT64 long
#define FT_UINT64 unsigned long
#elif defined( _MSC_VER ) && _MSC_VER >= 900 /* Visual C++ (and Intel C++) */
/* this compiler provides the __int64 type */
#define FT_LONG64
#define FT_INT64 __int64
#define FT_UINT64 unsigned __int64
#elif defined( __BORLANDC__ ) /* Borland C++ */
/* XXXX: We should probably check the value of __BORLANDC__ in order */
/* to test the compiler version. */
/* this compiler provides the __int64 type */
#define FT_LONG64
#define FT_INT64 __int64
#define FT_UINT64 unsigned __int64
#elif defined( __WATCOMC__ ) /* Watcom C++ */
/* Watcom doesn't provide 64-bit data types */
#elif defined( __MWERKS__ ) /* Metrowerks CodeWarrior */
#define FT_LONG64
#define FT_INT64 long long int
#define FT_UINT64 unsigned long long int
#elif defined( __GNUC__ )
/* GCC provides the `long long' type */
#define FT_LONG64
#define FT_INT64 long long int
#define FT_UINT64 unsigned long long int
#endif /* FT_SIZEOF_LONG == (64 / FT_CHAR_BIT) */
/*************************************************************************/
/* */
/* A 64-bit data type will create compilation problems if you compile */
/* in strict ANSI mode. To avoid them, we disable its use if __STDC__ */
/* is defined. You can however ignore this rule by defining the */
/* FT_CONFIG_OPTION_FORCE_INT64 configuration macro. */
/* */
#if defined( FT_LONG64 ) && !defined( FT_CONFIG_OPTION_FORCE_INT64 )
#ifdef __STDC__
/* undefine the 64-bit macros in strict ANSI compilation mode */
#undef FT_LONG64
#undef FT_INT64
#endif /* __STDC__ */
#endif /* FT_LONG64 && !FT_CONFIG_OPTION_FORCE_INT64 */
#ifdef FT_LONG64
typedef FT_INT64 FT_Int64;
typedef FT_UINT64 FT_UInt64;
#endif
#define FT_BEGIN_STMNT do {
#define FT_END_STMNT } while ( 0 )
#define FT_DUMMY_STMNT FT_BEGIN_STMNT FT_END_STMNT
#ifndef FT_CONFIG_OPTION_NO_ASSEMBLER
/* Provide assembler fragments for performance-critical functions. */
/* These must be defined `static __inline__' with GCC. */
#if defined( __CC_ARM ) || defined( __ARMCC__ ) /* RVCT */
#define FT_MULFIX_ASSEMBLER FT_MulFix_arm
/* documentation is in freetype.h */
static __inline FT_Int32
FT_MulFix_arm( FT_Int32 a,
FT_Int32 b )
{
register FT_Int32 t, t2;
__asm
{
smull t2, t, b, a /* (lo=t2,hi=t) = a*b */
mov a, t, asr #31 /* a = (hi >> 31) */
add a, a, #0x8000 /* a += 0x8000 */
adds t2, t2, a /* t2 += a */
adc t, t, #0 /* t += carry */
mov a, t2, lsr #16 /* a = t2 >> 16 */
orr a, a, t, lsl #16 /* a |= t << 16 */
}
return a;
}
#endif /* __CC_ARM || __ARMCC__ */
#ifdef __GNUC__
#if defined( __arm__ ) && \
( !defined( __thumb__ ) || defined( __thumb2__ ) ) && \
!( defined( __CC_ARM ) || defined( __ARMCC__ ) )
#define FT_MULFIX_ASSEMBLER FT_MulFix_arm
/* documentation is in freetype.h */
static __inline__ FT_Int32
FT_MulFix_arm( FT_Int32 a,
FT_Int32 b )
{
register FT_Int32 t, t2;
__asm__ __volatile__ (
"smull %1, %2, %4, %3\n\t" /* (lo=%1,hi=%2) = a*b */
"mov %0, %2, asr #31\n\t" /* %0 = (hi >> 31) */
#ifdef __clang__
"add.w %0, %0, #0x8000\n\t" /* %0 += 0x8000 */
#else
"add %0, %0, #0x8000\n\t" /* %0 += 0x8000 */
#endif
"adds %1, %1, %0\n\t" /* %1 += %0 */
"adc %2, %2, #0\n\t" /* %2 += carry */
"mov %0, %1, lsr #16\n\t" /* %0 = %1 >> 16 */
"orr %0, %0, %2, lsl #16\n\t" /* %0 |= %2 << 16 */
: "=r"(a), "=&r"(t2), "=&r"(t)
: "r"(a), "r"(b)
: "cc" );
return a;
}
#endif /* __arm__ && */
/* ( __thumb2__ || !__thumb__ ) && */
/* !( __CC_ARM || __ARMCC__ ) */
#if defined( __i386__ )
#define FT_MULFIX_ASSEMBLER FT_MulFix_i386
/* documentation is in freetype.h */
static __inline__ FT_Int32
FT_MulFix_i386( FT_Int32 a,
FT_Int32 b )
{
register FT_Int32 result;
__asm__ __volatile__ (
"imul %%edx\n"
"movl %%edx, %%ecx\n"
"sarl $31, %%ecx\n"
"addl $0x8000, %%ecx\n"
"addl %%ecx, %%eax\n"
"adcl $0, %%edx\n"
"shrl $16, %%eax\n"
"shll $16, %%edx\n"
"addl %%edx, %%eax\n"
: "=a"(result), "=d"(b)
: "a"(a), "d"(b)
: "%ecx", "cc" );
return result;
}
#endif /* i386 */
#endif /* __GNUC__ */
#ifdef _MSC_VER /* Visual C++ */
#ifdef _M_IX86
#define FT_MULFIX_ASSEMBLER FT_MulFix_i386
/* documentation is in freetype.h */
static __inline FT_Int32
FT_MulFix_i386( FT_Int32 a,
FT_Int32 b )
{
register FT_Int32 result;
__asm
{
mov eax, a
mov edx, b
imul edx
mov ecx, edx
sar ecx, 31
add ecx, 8000h
add eax, ecx
adc edx, 0
shr eax, 16
shl edx, 16
add eax, edx
mov result, eax
}
return result;
}
#endif /* _M_IX86 */
#endif /* _MSC_VER */
#if defined( __GNUC__ ) && defined( __x86_64__ )
#define FT_MULFIX_ASSEMBLER FT_MulFix_x86_64
static __inline__ FT_Int32
FT_MulFix_x86_64( FT_Int32 a,
FT_Int32 b )
{
/* Temporarily disable the warning that C90 doesn't support */
/* `long long'. */
#if ( __GNUC__ > 4 ) || ( ( __GNUC__ == 4 ) && ( __GNUC_MINOR__ >= 6 ) )
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wlong-long"
#endif
#if 1
/* Technically not an assembly fragment, but GCC does a really good */
/* job at inlining it and generating good machine code for it. */
long long ret, tmp;
ret = (long long)a * b;
tmp = ret >> 63;
ret += 0x8000 + tmp;
return (FT_Int32)( ret >> 16 );
#else
/* For some reason, GCC 4.6 on Ubuntu 12.04 generates invalid machine */
/* code from the lines below. The main issue is that `wide_a' is not */
/* properly initialized by sign-extending `a'. Instead, the generated */
/* machine code assumes that the register that contains `a' on input */
/* can be used directly as a 64-bit value, which is wrong most of the */
/* time. */
long long wide_a = (long long)a;
long long wide_b = (long long)b;
long long result;
__asm__ __volatile__ (
"imul %2, %1\n"
"mov %1, %0\n"
"sar $63, %0\n"
"lea 0x8000(%1, %0), %0\n"
"sar $16, %0\n"
: "=&r"(result), "=&r"(wide_a)
: "r"(wide_b)
: "cc" );
return (FT_Int32)result;
#endif
#if ( __GNUC__ > 4 ) || ( ( __GNUC__ == 4 ) && ( __GNUC_MINOR__ >= 6 ) )
#pragma GCC diagnostic pop
#endif
}
#endif /* __GNUC__ && __x86_64__ */
#endif /* !FT_CONFIG_OPTION_NO_ASSEMBLER */
#ifdef FT_CONFIG_OPTION_INLINE_MULFIX
#ifdef FT_MULFIX_ASSEMBLER
#define FT_MULFIX_INLINED FT_MULFIX_ASSEMBLER
#endif
#endif
#ifdef FT_MAKE_OPTION_SINGLE_OBJECT
#define FT_LOCAL( x ) static x
#define FT_LOCAL_DEF( x ) static x
#else
#ifdef __cplusplus
#define FT_LOCAL( x ) extern "C" x
#define FT_LOCAL_DEF( x ) extern "C" x
#else
#define FT_LOCAL( x ) extern x
#define FT_LOCAL_DEF( x ) x
#endif
#endif /* FT_MAKE_OPTION_SINGLE_OBJECT */
#define FT_LOCAL_ARRAY( x ) extern const x
#define FT_LOCAL_ARRAY_DEF( x ) const x
#ifndef FT_BASE
#ifdef __cplusplus
#define FT_BASE( x ) extern "C" x
#else
#define FT_BASE( x ) extern x
#endif
#endif /* !FT_BASE */
#ifndef FT_BASE_DEF
#ifdef __cplusplus
#define FT_BASE_DEF( x ) x
#else
#define FT_BASE_DEF( x ) x
#endif
#endif /* !FT_BASE_DEF */
#ifndef FT_EXPORT
#ifdef __cplusplus
#define FT_EXPORT( x ) extern "C" x
#else
#define FT_EXPORT( x ) extern x
#endif
#endif /* !FT_EXPORT */
#ifndef FT_EXPORT_DEF
#ifdef __cplusplus
#define FT_EXPORT_DEF( x ) extern "C" x
#else
#define FT_EXPORT_DEF( x ) extern x
#endif
#endif /* !FT_EXPORT_DEF */
#ifndef FT_EXPORT_VAR
#ifdef __cplusplus
#define FT_EXPORT_VAR( x ) extern "C" x
#else
#define FT_EXPORT_VAR( x ) extern x
#endif
#endif /* !FT_EXPORT_VAR */
/* The following macros are needed to compile the library with a */
/* C++ compiler and with 16bit compilers. */
/* */
/* This is special. Within C++, you must specify `extern "C"' for */
/* functions which are used via function pointers, and you also */
/* must do that for structures which contain function pointers to */
/* assure C linkage -- it's not possible to have (local) anonymous */
/* functions which are accessed by (global) function pointers. */
/* */
/* */
/* FT_CALLBACK_DEF is used to _define_ a callback function. */
/* */
/* FT_CALLBACK_TABLE is used to _declare_ a constant variable that */
/* contains pointers to callback functions. */
/* */
/* FT_CALLBACK_TABLE_DEF is used to _define_ a constant variable */
/* that contains pointers to callback functions. */
/* */
/* */
/* Some 16bit compilers have to redefine these macros to insert */
/* the infamous `_cdecl' or `__fastcall' declarations. */
/* */
#ifndef FT_CALLBACK_DEF
#ifdef __cplusplus
#define FT_CALLBACK_DEF( x ) extern "C" x
#else
#define FT_CALLBACK_DEF( x ) static x
#endif
#endif /* FT_CALLBACK_DEF */
#ifndef FT_CALLBACK_TABLE
#ifdef __cplusplus
#define FT_CALLBACK_TABLE extern "C"
#define FT_CALLBACK_TABLE_DEF extern "C"
#else
#define FT_CALLBACK_TABLE extern
#define FT_CALLBACK_TABLE_DEF /* nothing */
#endif
#endif /* FT_CALLBACK_TABLE */
FT_END_HEADER
#endif /* __FTCONFIG_H__ */
/* END */
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