rlm@0: // Sets up common environment for Shay Green's libraries.
rlm@0: // To change configuration options, modify blargg_config.h, not this file.
rlm@0: 
rlm@0: // snes_spc 0.9.0
rlm@0: #ifndef BLARGG_COMMON_H
rlm@0: #define BLARGG_COMMON_H
rlm@0: 
rlm@0: #include <stddef.h>
rlm@0: #include <stdlib.h>
rlm@0: #include <assert.h>
rlm@0: #include <limits.h>
rlm@0: 
rlm@0: #undef BLARGG_COMMON_H
rlm@0: // allow blargg_config.h to #include blargg_common.h
rlm@0: #include "blargg_config.h"
rlm@0: #ifndef BLARGG_COMMON_H
rlm@0: #define BLARGG_COMMON_H
rlm@0: 
rlm@0: // BLARGG_RESTRICT: equivalent to restrict, where supported
rlm@0: #if defined (__GNUC__) || _MSC_VER >= 1100
rlm@0: 	#define BLARGG_RESTRICT __restrict
rlm@0: #else
rlm@0: 	#define BLARGG_RESTRICT
rlm@0: #endif
rlm@0: 
rlm@0: // STATIC_CAST(T,expr): Used in place of static_cast<T> (expr)
rlm@0: #ifndef STATIC_CAST
rlm@0: 	#define STATIC_CAST(T,expr) ((T) (expr))
rlm@0: #endif
rlm@0: 
rlm@0: // blargg_err_t (0 on success, otherwise error string)
rlm@0: #ifndef blargg_err_t
rlm@0: 	typedef const char* blargg_err_t;
rlm@0: #endif
rlm@0: 
rlm@0: // blargg_vector - very lightweight vector of POD types (no constructor/destructor)
rlm@0: template<class T>
rlm@0: class blargg_vector {
rlm@0: 	T* begin_;
rlm@0: 	size_t size_;
rlm@0: public:
rlm@0: 	blargg_vector() : begin_( 0 ), size_( 0 ) { }
rlm@0: 	~blargg_vector() { free( begin_ ); }
rlm@0: 	size_t size() const { return size_; }
rlm@0: 	T* begin() const { return begin_; }
rlm@0: 	T* end() const { return begin_ + size_; }
rlm@0: 	blargg_err_t resize( size_t n )
rlm@0: 	{
rlm@0: 		// TODO: blargg_common.cpp to hold this as an outline function, ugh
rlm@0: 		void* p = realloc( begin_, n * sizeof (T) );
rlm@0: 		if ( p )
rlm@0: 			begin_ = (T*) p;
rlm@0: 		else if ( n > size_ ) // realloc failure only a problem if expanding
rlm@0: 			return "Out of memory";
rlm@0: 		size_ = n;
rlm@0: 		return 0;
rlm@0: 	}
rlm@0: 	void clear() { void* p = begin_; begin_ = 0; size_ = 0; free( p ); }
rlm@0: 	T& operator [] ( size_t n ) const
rlm@0: 	{
rlm@0: 		assert( n <= size_ ); // <= to allow past-the-end value
rlm@0: 		return begin_ [n];
rlm@0: 	}
rlm@0: };
rlm@0: 
rlm@0: #ifndef BLARGG_DISABLE_NOTHROW
rlm@0: 	// throw spec mandatory in ISO C++ if operator new can return NULL
rlm@0: 	#if __cplusplus >= 199711 || defined (__GNUC__)
rlm@0: 		#define BLARGG_THROWS( spec ) throw spec
rlm@0: 	#else
rlm@0: 		#define BLARGG_THROWS( spec )
rlm@0: 	#endif
rlm@0: 	#define BLARGG_DISABLE_NOTHROW \
rlm@0: 		void* operator new ( size_t s ) BLARGG_THROWS(()) { return malloc( s ); }\
rlm@0: 		void operator delete ( void* p ) { free( p ); }
rlm@0: 	#define BLARGG_NEW new
rlm@0: #else
rlm@0: 	#include <new>
rlm@0: 	#define BLARGG_NEW new (std::nothrow)
rlm@0: #endif
rlm@0: 
rlm@0: // BLARGG_4CHAR('a','b','c','d') = 'abcd' (four character integer constant)
rlm@0: #define BLARGG_4CHAR( a, b, c, d ) \
rlm@0: 	((a&0xFF)*0x1000000L + (b&0xFF)*0x10000L + (c&0xFF)*0x100L + (d&0xFF))
rlm@0: 
rlm@0: // BOOST_STATIC_ASSERT( expr ): Generates compile error if expr is 0.
rlm@0: #ifndef BOOST_STATIC_ASSERT
rlm@0: 	#ifdef _MSC_VER
rlm@0: 		// MSVC6 (_MSC_VER < 1300) fails for use of __LINE__ when /Zl is specified
rlm@0: 		#define BOOST_STATIC_ASSERT( expr ) \
rlm@0: 			void blargg_failed_( int (*arg) [2 / (int) !!(expr) - 1] )
rlm@0: 	#else
rlm@0: 		// Some other compilers fail when declaring same function multiple times in class,
rlm@0: 		// so differentiate them by line
rlm@0: 		#define BOOST_STATIC_ASSERT( expr ) \
rlm@0: 			void blargg_failed_( int (*arg) [2 / !!(expr) - 1] [__LINE__] )
rlm@0: 	#endif
rlm@0: #endif
rlm@0: 
rlm@0: // BLARGG_COMPILER_HAS_BOOL: If 0, provides bool support for old compiler. If 1,
rlm@0: // compiler is assumed to support bool. If undefined, availability is determined.
rlm@0: #ifndef BLARGG_COMPILER_HAS_BOOL
rlm@0: 	#if defined (__MWERKS__)
rlm@0: 		#if !__option(bool)
rlm@0: 			#define BLARGG_COMPILER_HAS_BOOL 0
rlm@0: 		#endif
rlm@0: 	#elif defined (_MSC_VER)
rlm@0: 		#if _MSC_VER < 1100
rlm@0: 			#define BLARGG_COMPILER_HAS_BOOL 0
rlm@0: 		#endif
rlm@0: 	#elif defined (__GNUC__)
rlm@0: 		// supports bool
rlm@0: 	#elif __cplusplus < 199711
rlm@0: 		#define BLARGG_COMPILER_HAS_BOOL 0
rlm@0: 	#endif
rlm@0: #endif
rlm@0: #if defined (BLARGG_COMPILER_HAS_BOOL) && !BLARGG_COMPILER_HAS_BOOL
rlm@0: 	// If you get errors here, modify your blargg_config.h file
rlm@0: 	typedef int bool;
rlm@0: 	const bool true  = 1;
rlm@0: 	const bool false = 0;
rlm@0: #endif
rlm@0: 
rlm@0: // blargg_long/blargg_ulong = at least 32 bits, int if it's big enough
rlm@0: 
rlm@0: #if INT_MAX < 0x7FFFFFFF || LONG_MAX == 0x7FFFFFFF
rlm@0: 	typedef long blargg_long;
rlm@0: #else
rlm@0: 	typedef int blargg_long;
rlm@0: #endif
rlm@0: 
rlm@0: #if UINT_MAX < 0xFFFFFFFF || ULONG_MAX == 0xFFFFFFFF
rlm@0: 	typedef unsigned long blargg_ulong;
rlm@0: #else
rlm@0: 	typedef unsigned blargg_ulong;
rlm@0: #endif
rlm@0: 
rlm@0: // BOOST::int8_t etc.
rlm@0: 
rlm@0: // HAVE_STDINT_H: If defined, use <stdint.h> for int8_t etc.
rlm@0: #if defined (HAVE_STDINT_H)
rlm@0: 	#include <stdint.h>
rlm@0: 	#define BOOST
rlm@0: 
rlm@0: // HAVE_INTTYPES_H: If defined, use <stdint.h> for int8_t etc.
rlm@0: #elif defined (HAVE_INTTYPES_H)
rlm@0: 	#include <inttypes.h>
rlm@0: 	#define BOOST
rlm@0: 
rlm@0: #else
rlm@0: 	struct BOOST
rlm@0: 	{
rlm@0: 		#if UCHAR_MAX == 0xFF && SCHAR_MAX == 0x7F
rlm@0: 			typedef signed char     int8_t;
rlm@0: 			typedef unsigned char   uint8_t;
rlm@0: 		#else
rlm@0: 			// No suitable 8-bit type available
rlm@0: 			typedef struct see_blargg_common_h int8_t;
rlm@0: 			typedef struct see_blargg_common_h uint8_t;
rlm@0: 		#endif
rlm@0: 		
rlm@0: 		#if USHRT_MAX == 0xFFFF
rlm@0: 			typedef short           int16_t;
rlm@0: 			typedef unsigned short  uint16_t;
rlm@0: 		#else
rlm@0: 			// No suitable 16-bit type available
rlm@0: 			typedef struct see_blargg_common_h int16_t;
rlm@0: 			typedef struct see_blargg_common_h uint16_t;
rlm@0: 		#endif
rlm@0: 		
rlm@0: 		#if ULONG_MAX == 0xFFFFFFFF
rlm@0: 			typedef long            int32_t;
rlm@0: 			typedef unsigned long   uint32_t;
rlm@0: 		#elif UINT_MAX == 0xFFFFFFFF
rlm@0: 			typedef int             int32_t;
rlm@0: 			typedef unsigned int    uint32_t;
rlm@0: 		#else
rlm@0: 			// No suitable 32-bit type available
rlm@0: 			typedef struct see_blargg_common_h int32_t;
rlm@0: 			typedef struct see_blargg_common_h uint32_t;
rlm@0: 		#endif
rlm@0: 	};
rlm@0: #endif
rlm@0: 
rlm@0: #endif
rlm@0: #endif