Mercurial > sdl-ios-xcode
view src/video/SDL_memops.h @ 1303:52b5afd7ecee
Date: Tue, 05 Jul 2005 21:43:26 +1000
From: Sean Childs
Subject: [SDL] Compiling SDL 1.2.8 with the free Borland compiler
When compiling SDL 1.2.8 with the free Borland compiler, I received this
error (there is a similar error that occurs in
src\video\windx5\sdl_dx5events.c):
Error E2342 ..\..\src\video\windib\sdl_dibevents.c 189: Type mismatch in
parameter 'lpPrevWndFunc' (wanted 'int (__stdcall *)()', got 'long
(__stdcall *)(void *,unsigned int,unsigned int,long)') in function
DIB_HandleMessage
I checked the MSDN library at:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/
windowsuserinterface/windowing/windowprocedures/windowprocedurereference/wind
owprocedurefunctions/callwindowproc.asp
and it had this to say:
If STRICT is not defined, the lpPrevWndFunc parameter has the data type
FARPROC. The FARPROC type is declared as follows:
int (FAR WINAPI * FARPROC) ()
In C, the FARPROC declaration indicates a callback function that has an
unspecified parameter list. In C++, however, the empty parameter list in
the declaration indicates that a function has no parameters. This subtle
distinction can break careless code. Following is one way to handle this
situation:
#ifdef STRICT
WNDPROC MyWindowProcedure
#else
FARPROC MyWindowProcedure
#endif
...
lResult = CallWindowProc(MyWindowProcedure, ...)
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 31 Jan 2006 15:30:42 +0000 |
parents | b8d311d90021 |
children | c9b51268668f |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif #ifndef _SDL_memops_h #define _SDL_memops_h /* System dependent optimized memory manipulation routines: */ #include <string.h> #if defined(__GNUC__) && defined(i386) /* Thanks to Brennan "Bas" Underwood, for the inspiration. :) */ #define SDL_memcpy(dst, src, len) \ do { \ int u0, u1, u2; \ __asm__ __volatile__ ( \ "cld\n\t" \ "rep ; movsl\n\t" \ "testb $2,%b4\n\t" \ "je 1f\n\t" \ "movsw\n" \ "1:\ttestb $1,%b4\n\t" \ "je 2f\n\t" \ "movsb\n" \ "2:" \ : "=&c" (u0), "=&D" (u1), "=&S" (u2) \ : "0" ((unsigned)(len)/4), "q" (len), "1" (dst),"2" (src) \ : "memory" ); \ } while(0) #define SDL_memcpy4(dst, src, len) \ do { \ int ecx, edi, esi; \ __asm__ __volatile__ ( \ "cld\n\t" \ "rep ; movsl" \ : "=&c" (ecx), "=&D" (edi), "=&S" (esi) \ : "0" ((unsigned)(len)), "1" (dst), "2" (src) \ : "memory" ); \ } while(0) #define SDL_revcpy(dst, src, len) \ do { \ int u0, u1, u2; \ char *dstp = (char *)(dst); \ char *srcp = (char *)(src); \ int n = (len); \ if ( n >= 4 ) { \ __asm__ __volatile__ ( \ "std\n\t" \ "rep ; movsl\n\t" \ : "=&c" (u0), "=&D" (u1), "=&S" (u2) \ : "0" (n >> 2), \ "1" (dstp+(n-4)), "2" (srcp+(n-4)) \ : "memory" ); \ } \ switch (n & 3) { \ case 3: dstp[2] = srcp[2]; \ case 2: dstp[1] = srcp[1]; \ case 1: dstp[0] = srcp[0]; \ break; \ default: \ break; \ } \ } while(0) #define SDL_memmove(dst, src, len) \ do { \ if ( (dst) < (src) ) { \ SDL_memcpy((dst), (src), (len)); \ } else { \ SDL_revcpy((dst), (src), (len)); \ } \ } while(0) #define SDL_memset4(dst, val, len) \ do { \ int u0, u1, u2; \ __asm__ __volatile__ ( \ "cld\n\t" \ "rep ; stosl\n\t" \ : "=&D" (u0), "=&a" (u1), "=&c" (u2) \ : "0" (dst), "1" (val), "2" ((Uint32)(len)) \ : "memory" ); \ } while(0) #endif /* GNU C and x86 */ /* If there are no optimized versions, define the normal versions */ #ifndef SDL_memcpy #define SDL_memcpy(dst, src, len) memcpy(dst, src, len) #endif #ifndef SDL_memcpy4 #define SDL_memcpy4(dst, src, len) memcpy(dst, src, (len) << 2) #endif #ifndef SDL_revcpy #define SDL_revcpy(dst, src, len) memmove(dst, src, len) #endif #ifndef SDL_memset4 #define SDL_memset4(dst, val, len) \ do { \ unsigned _count = (len); \ unsigned _n = (_count + 3) / 4; \ Uint32 *_p = (Uint32 *)(dst); \ Uint32 _val = (val); \ switch (_count % 4) { \ case 0: do { *_p++ = _val; \ case 3: *_p++ = _val; \ case 2: *_p++ = _val; \ case 1: *_p++ = _val; \ } while ( --_n ); \ } \ } while(0) #endif #endif /* _SDL_memops_h */