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scummsys.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001  Ludvig Strigeus
 * Copyright (C) 2001-2004 The ScummVM project
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/common/scummsys.h,v 1.53 2004/12/10 15:19:53 chrilith Exp $
 *
 */
#ifndef SCUMMSYS_H
#define SCUMMSYS_H

#ifndef _STDAFX_H
#error Included scummsys.h without including stdafx.h first!
#endif

#include <stdlib.h>
#include <stdio.h>

// Use config.h, generated by configure
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif

#ifndef PI
#define PI 3.14159265358979323846
#endif

#if defined(_MSC_VER)

      #define scumm_stricmp stricmp
      #define scumm_strnicmp strnicmp
      #define snprintf _snprintf

      #if defined(USE_ZLIB)
      #define ZLIB_WINAPI
      #endif

      #if defined(CHECK_HEAP)
      #undef CHECK_HEAP
      #define CHECK_HEAP checkHeap();
      #else
      #define CHECK_HEAP
      #endif

      #define SCUMM_LITTLE_ENDIAN

      #define FORCEINLINE __forceinline
      #define NORETURN _declspec(noreturn)

      typedef unsigned char byte;
      typedef unsigned char uint8;
      typedef unsigned short uint16;
      typedef unsigned long uint32;
      typedef unsigned int uint;
      typedef signed char int8;
      typedef signed short int16;
      typedef signed long int32;
      
      #define START_PACK_STRUCTS pack(push, 1)
      #define END_PACK_STRUCTS       pack(pop)
      #define GCC_PACK

#if defined(_WIN32_WCE) && _WIN32_WCE < 300

      #define CDECL __cdecl

#endif

#elif defined(__MINGW32__)

      #define scumm_stricmp stricmp
      #define scumm_strnicmp strnicmp
      #define CHECK_HEAP
      #define SCUMM_LITTLE_ENDIAN

      #define FORCEINLINE inline
      #define NORETURN __attribute__((__noreturn__))
      #define GCC_PACK __attribute__((packed))
      #define _HEAPOK 0

      typedef unsigned char byte;
      typedef unsigned char uint8;
      typedef unsigned short uint16;
      typedef unsigned int uint32;
      typedef unsigned int uint;
      typedef signed char int8;
      typedef signed short int16;
      typedef signed int int32;

      #define START_PACK_STRUCTS pack (push, 1)
      #define END_PACK_STRUCTS       pack(pop)

#elif defined(UNIX)

      #define scumm_stricmp strcasecmp
      #define scumm_strnicmp strncasecmp

      #define CHECK_HEAP

      #ifndef CONFIG_H
            #ifdef X11_BACKEND
      
            // You need to set this manually if necessary
      //    #define SCUMM_LITTLE_ENDIAN
            
            #else
            /* need this for the SDL_BYTEORDER define */
            #include <SDL_byteorder.h>
      
            #if SDL_BYTEORDER == SDL_LIL_ENDIAN
            #define SCUMM_LITTLE_ENDIAN
            #elif SDL_BYTEORDER == SDL_BIG_ENDIAN
            #define SCUMM_BIG_ENDIAN
            #else
            #error Neither SDL_BIG_ENDIAN nor SDL_LIL_ENDIAN is set.
            #endif
            #endif
      #endif

      // You need to set this manually if necessary
//    #define SCUMM_NEED_ALIGNMENT

      #define FORCEINLINE inline
      #define CDECL 

      #ifndef HAVE_CONFIG_H
      typedef unsigned char byte;
      typedef unsigned char uint8;
      typedef unsigned short uint16;
      typedef unsigned int uint;
      typedef unsigned int uint32;
      typedef signed char int8;
      typedef signed short int16;
      typedef signed int int32;
      #endif

      #if defined(__DECCXX) // Assume alpha architecture
      #define INVERSE_MKID
      #define SCUMM_NEED_ALIGNMENT
      #endif

      #if defined(__GNUC__)
      #define START_PACK_STRUCTS
      #define END_PACK_STRUCTS
      #define GCC_PACK __attribute__((packed))
      #define NORETURN __attribute__((__noreturn__)) 
      #else
      #define START_PACK_STRUCTS pack (1)
      #define END_PACK_STRUCTS       pack ()
      #define GCC_PACK
      #define NORETURN
      #endif

#elif defined(__PALMOS_TRAPS__)     // PALMOS
      #include <PalmOS.h>
      #include "globals.h"
      #include "extend.h"
      
      #define STRINGBUFLEN 256

      #define scumm_stricmp stricmp
      #define scumm_strnicmp strnicmp
      
      #define CHECK_HEAP
      #define SCUMM_BIG_ENDIAN
      #define SCUMM_NEED_ALIGNMENT
      #define NONSTANDARD_SAVE

      #define FORCEINLINE inline
      #define CDECL 

      typedef unsigned char byte;
      typedef unsigned char uint8;
      typedef unsigned short uint16;
      typedef unsigned long uint32;
      typedef unsigned int uint;
      typedef signed char int8;
      typedef signed short int16;
      typedef signed long int32;
      
      #define START_PACK_STRUCTS pack (1)
      #define END_PACK_STRUCTS   pack ()
      #define GCC_PACK
      #define NORETURN
      #define NEED_STRDUP

      #define NEWGUI_256

#elif defined(__MORPHOS__)
      #define scumm_stricmp stricmp
      #define scumm_strnicmp strnicmp
      #define CHECK_HEAP

      #define SCUMM_BIG_ENDIAN
      #define SCUMM_NEED_ALIGNMENT

      #define FORCEINLINE inline
      #define CDECL

      typedef unsigned char byte;
      typedef unsigned char uint8;
      typedef unsigned short uint16;
      typedef unsigned long uint32;
      typedef unsigned int uint;
      typedef signed char int8;
      typedef signed short int16;
      typedef signed long int32;

      #if defined(__GNUC__)
            #define START_PACK_STRUCTS
            #define END_PACK_STRUCTS
            #define GCC_PACK __attribute__((packed))
            #define NORETURN __attribute__((__noreturn__))
      #else
            #define START_PACK_STRUCTS pack (1)
            #define END_PACK_STRUCTS       pack ()
            #define GCC_PACK
            #define NORETURN
      #endif
      #define main morphos_main

#elif defined(__DC__)

      #define scumm_stricmp strcasecmp
      #define scumm_strnicmp strncasecmp
      #define CHECK_HEAP
      #define SCUMM_LITTLE_ENDIAN
      #define SCUMM_NEED_ALIGNMENT

      #define FORCEINLINE inline
      #define NORETURN __attribute__((__noreturn__))
      #define GCC_PACK __attribute__((packed))
      #define CDECL

      typedef unsigned char byte;
      typedef unsigned char uint8;
      typedef unsigned short uint16;
      typedef unsigned long uint32;
      typedef unsigned int uint;
      typedef signed char int8;
      typedef signed short int16;
      typedef signed long int32;

      #define START_PACK_STRUCTS pack (push, 1)
      #define END_PACK_STRUCTS       pack(pop)

#elif defined __GP32__ //ph0x
      #define CDECL 
      #define SCUMM_NEED_ALIGNMENT
      #define SCUMM_LITTLE_ENDIAN 

      #define scumm_stricmp stricmp
      #define scumm_strnicmp strnicmp
      #define CHECK_HEAP

      #define FORCEINLINE inline
      #define NORETURN __attribute__((__noreturn__))
      #define GCC_PACK __attribute__((packed))
      #define _HEAPOK 0

      typedef unsigned char byte;
      typedef unsigned char uint8;
      typedef unsigned short uint16;
      typedef unsigned long uint32;
      typedef unsigned int uint;
      typedef signed char int8;
      typedef signed short int16;
      typedef signed long int32;

      #define START_PACK_STRUCTS pack (push, 1)
      #define END_PACK_STRUCTS       pack(pop)
#else
      #error No system type defined
#endif

FORCEINLINE uint32 SWAP_BYTES_32(uint32 a) {
      return ((a >> 24) & 0x000000FF) |
               ((a >>  8) & 0x0000FF00) |
               ((a <<  8) & 0x00FF0000) |
               ((a << 24) & 0xFF000000);
}

FORCEINLINE uint16 SWAP_BYTES_16(uint16 a) {
      return ((a >> 8) & 0x00FF) + ((a << 8) & 0xFF00);
}


#if defined(SCUMM_LITTLE_ENDIAN)

      #define PROTO_MKID(a) ((uint32) \
                  (((a) >> 24) & 0x000000FF) | \
                  (((a) >>  8) & 0x0000FF00) | \
                  (((a) <<  8) & 0x00FF0000) | \
                  (((a) << 24) & 0xFF000000))
      #define PROTO_MKID_BE(a) ((uint32)(a))

      #if defined(INVERSE_MKID)
      #  define MKID(a) PROTO_MKID_BE(a)
      #  define MKID_BE(a) PROTO_MKID(a)
      #else
      #  define MKID(a) PROTO_MKID(a)
      #  define MKID_BE(a) PROTO_MKID_BE(a)
      #endif

      #define READ_UINT32(a) READ_LE_UINT32(a)

      #define FROM_LE_32(a) ((uint32)(a))
      #define FROM_LE_16(a) ((uint16)(a))

      #define TO_LE_32(a) ((uint32)(a))
      #define TO_LE_16(a) ((uint16)(a))

      #define TO_BE_32(a) SWAP_BYTES_32(a)
      #define TO_BE_16(a) SWAP_BYTES_16(a)

#elif defined(SCUMM_BIG_ENDIAN)

      #define MKID(a) ((uint32)(a))
      #define MKID_BE(a) ((uint32)(a))
      //#define MKID_BE(a) SWAP_BYTES_32(a)

      #define READ_UINT32(a) READ_BE_UINT32(a)

      #define FROM_LE_32(a) SWAP_BYTES_32(a)
      #define FROM_LE_16(a) SWAP_BYTES_16(a)

      #define TO_LE_32(a) SWAP_BYTES_32(a)
      #define TO_LE_16(a) SWAP_BYTES_16(a)

      #define TO_BE_32(a) ((uint32)(a))
      #define TO_BE_16(a) ((uint16)(a))

#else

      #error No endianness defined

#endif


#if defined(SCUMM_NEED_ALIGNMENT) || defined(SCUMM_BIG_ENDIAN)
      FORCEINLINE uint16 READ_LE_UINT16(const void *ptr) {
            const byte *b = (const byte *)ptr;
            return (b[1] << 8) + b[0];
      }
      FORCEINLINE uint32 READ_LE_UINT32(const void *ptr) {
            const byte *b = (const byte *)ptr;
            return (b[3] << 24) + (b[2] << 16) + (b[1] << 8) + (b[0]);
      }
      FORCEINLINE void WRITE_LE_UINT16(void *ptr, uint16 value) {
            byte *b = (byte *)ptr;
            b[0] = (byte)(value >> 0);
            b[1] = (byte)(value >> 8);
      }
      FORCEINLINE void WRITE_LE_UINT32(void *ptr, uint32 value) {
            byte *b = (byte *)ptr;
            b[0] = (byte)(value >>  0);
            b[1] = (byte)(value >>  8);
            b[2] = (byte)(value >> 16);
            b[3] = (byte)(value >> 24);
      }
#else
      FORCEINLINE uint16 READ_LE_UINT16(const void *ptr) {
            return *(const uint16 *)(ptr);
      }
      FORCEINLINE uint32 READ_LE_UINT32(const void *ptr) {
            return *(const uint32 *)(ptr);
      }
      FORCEINLINE void WRITE_LE_UINT16(void *ptr, uint16 value) {
            *(uint16 *)(ptr) = value;
      }
      FORCEINLINE void WRITE_LE_UINT32(void *ptr, uint32 value) {
            *(uint32 *)(ptr) = value;
      }
#endif


#if defined(SCUMM_NEED_ALIGNMENT) || defined(SCUMM_LITTLE_ENDIAN)
      FORCEINLINE uint16 READ_BE_UINT16(const void *ptr) {
            const byte *b = (const byte *)ptr;
            return (b[0] << 8) + b[1];
      }
      FORCEINLINE uint32 READ_BE_UINT32(const void *ptr) {
            const byte *b = (const byte*)ptr;
            return (b[0] << 24) + (b[1] << 16) + (b[2] << 8) + (b[3]);
      }
      FORCEINLINE void WRITE_BE_UINT16(void *ptr, uint16 value) {
            byte *b = (byte *)ptr;
            b[0] = (byte)(value >> 8);
            b[1] = (byte)(value >> 0);
      }
      FORCEINLINE void WRITE_BE_UINT32(void *ptr, uint32 value) {
            byte *b = (byte *)ptr;
            b[0] = (byte)(value >> 24);
            b[1] = (byte)(value >> 16);
            b[2] = (byte)(value >>  8);
            b[3] = (byte)(value >>  0);
      }
#else
      FORCEINLINE uint16 READ_BE_UINT16(const void *ptr) {
            return *(const uint16 *)(ptr);
      }
      FORCEINLINE uint32 READ_BE_UINT32(const void *ptr) {
            return *(const uint32 *)(ptr);
      }
      FORCEINLINE void WRITE_BE_UINT16(void *ptr, uint16 value) {
            *(uint16 *)(ptr) = value;
      }
      FORCEINLINE void WRITE_BE_UINT32(void *ptr, uint32 value) {
            *(uint32 *)(ptr) = value;
      }
#endif

FORCEINLINE uint32 READ_LE_UINT24(const void *ptr) {
      const byte *b = (const byte *)ptr;
      return (b[2] << 16) + (b[1] << 8) + (b[0]);
}

FORCEINLINE uint32 READ_BE_UINT24(const void *ptr) {
      const byte *b = (const byte*)ptr;
      return (b[0] << 16) + (b[1] << 8) + (b[2]);
}
      
#if defined(NEWGUI_256)
      // 256 color only on PalmOS
      typedef byte OverlayColor;
#else
      // 15/16 bit color mode everywhere else...
      typedef int16 OverlayColor;
#endif

#ifndef STRINGBUFLEN
#define STRINGBUFLEN 1024
#endif

/*
#if !defined(__PALM_OS__)
      // Initialized operator new
      void * operator new(size_t size);
      void operator delete(void *ptr);
      
      // Temporary hack until we fully remove the new/delete operators:
      // Since 'new' now returns a memory block inited to 0xE7E7E7E7 we might
      // get some invocations of free() with that param. We check for those here.
      // That allows us to set a debugger breakpoint to catch it.
      #ifndef _WIN32_WCE
      #define free(x)   free_check(x)
      void free_check(void *ptr);
      #endif
#endif
*/

#endif

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