src/loadso/macos/SDL_loadso.c
changeset 1173 e9cf8c1b4590
child 1312 c9b51268668f
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1172:f69f4d25fb20 1173:e9cf8c1b4590
       
     1 /*
       
     2     SDL - Simple DirectMedia Layer
       
     3     Copyright (C) 1997-2004 Sam Lantinga
       
     4 
       
     5     This library is free software; you can redistribute it and/or
       
     6     modify it under the terms of the GNU Library General Public
       
     7     License as published by the Free Software Foundation; either
       
     8     version 2 of the License, or (at your option) any later version.
       
     9 
       
    10     This library is distributed in the hope that it will be useful,
       
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
       
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       
    13     Library General Public License for more details.
       
    14 
       
    15     You should have received a copy of the GNU Library General Public
       
    16     License along with this library; if not, write to the Free
       
    17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
       
    18 
       
    19     Sam Lantinga
       
    20     slouken@libsdl.org
       
    21 */
       
    22 
       
    23 #ifdef SAVE_RCSID
       
    24 static char rcsid =
       
    25  "@(#) $Id$";
       
    26 #endif
       
    27 
       
    28 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
       
    29 /* System dependent library loading routines                           */
       
    30 
       
    31 #if !SDL_INTERNAL_BUILDING_LOADSO
       
    32 #error Do not compile directly...compile src/SDL_loadso.c instead!
       
    33 #endif
       
    34 
       
    35 #if !defined(macintosh)
       
    36 #error Compiling for the wrong platform?
       
    37 #endif
       
    38 
       
    39 #include <stdio.h>
       
    40 #include <string.h>
       
    41 #define OLDP2C 1
       
    42 #include <Strings.h>
       
    43 #include <CodeFragments.h>
       
    44 #include <Errors.h>
       
    45 
       
    46 #include "SDL_types.h"
       
    47 #include "SDL_error.h"
       
    48 #include "SDL_loadso.h"
       
    49 
       
    50 void *SDL_LoadObject(const char *sofile)
       
    51 {
       
    52 	void *handle = NULL;
       
    53 	const char *loaderror = NULL;
       
    54 	CFragConnectionID library_id;
       
    55 	Ptr mainAddr;
       
    56 	Str255 errName;
       
    57 	OSErr error;
       
    58 	char psofile[512];
       
    59 
       
    60 	strncpy(psofile, sofile, SDL_TABLESIZE(psofile));
       
    61 	psofile[SDL_TABLESIZE(psofile)-1] = '\0';
       
    62 	error = GetSharedLibrary(C2PStr(psofile), kCompiledCFragArch,
       
    63 			kLoadCFrag, &library_id, &mainAddr, errName);
       
    64 	switch (error) {
       
    65 		case noErr:
       
    66 			loaderror = NULL;
       
    67 			break;
       
    68 		case cfragNoLibraryErr:
       
    69 			loaderror = "Library not found";
       
    70 			break;
       
    71 		case cfragUnresolvedErr:
       
    72 			loaderror = "Unabled to resolve symbols";
       
    73 			break;
       
    74 		case cfragNoPrivateMemErr:
       
    75 		case cfragNoClientMemErr:
       
    76 			loaderror = "Out of memory";
       
    77 			break;
       
    78 		default:
       
    79 			loaderror = "Unknown Code Fragment Manager error";
       
    80 			break;
       
    81 	}
       
    82 	if ( loaderror == NULL ) {
       
    83 		handle = (void *)(library_id);
       
    84 	} else {
       
    85 		SDL_SetError("Failed loading %s: %s", sofile, loaderror);
       
    86 	}
       
    87 	return(handle);
       
    88 }
       
    89 
       
    90 void *SDL_LoadFunction(void *handle, const char *name)
       
    91 {
       
    92 	void *symbol = NULL;
       
    93 	const char *loaderror = NULL;
       
    94 	CFragSymbolClass class;
       
    95 	CFragConnectionID library_id = (CFragConnectionID)handle;
       
    96 	char pname[512];
       
    97 
       
    98 	strncpy(pname, name, SDL_TABLESIZE(pname));
       
    99 	pname[SDL_TABLESIZE(pname)-1] = '\0';
       
   100 	if ( FindSymbol(library_id, C2PStr(pname),
       
   101 	                (char **)&symbol, &class) != noErr ) {
       
   102 		loaderror = "Symbol not found";
       
   103 	}
       
   104 
       
   105 	if ( symbol == NULL ) {
       
   106 		SDL_SetError("Failed loading %s: %s", name, loaderror);
       
   107 	}
       
   108 	return(symbol);
       
   109 }
       
   110 
       
   111 void SDL_UnloadObject(void *handle)
       
   112 {
       
   113 	CFragConnectionID library_id;
       
   114 	if ( handle != NULL ) {
       
   115 		library_id = (CFragConnectionID)handle;
       
   116 		CloseConnection(&library_id);
       
   117 	}
       
   118 }
       
   119