1/*
2    SDL - Simple DirectMedia Layer
3    Copyright (C) 1997-2012 Sam Lantinga
4
5    This library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 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    Lesser General Public License for more details.
14
15    You should have received a copy of the GNU Lesser General Public
16    License along with this library; if not, write to the Free Software
17    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18
19    Sam Lantinga
20    slouken@libsdl.org
21*/
22#include "SDL_config.h"
23
24#ifdef SDL_LOADSO_MACOS
25
26/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
27/* System dependent library loading routines                           */
28
29#include <stdio.h>
30#include <string.h>
31#define OLDP2C 1
32#include <Strings.h>
33#include <CodeFragments.h>
34#include <Errors.h>
35
36#include "SDL_loadso.h"
37
38void *SDL_LoadObject(const char *sofile)
39{
40	void *handle = NULL;
41	const char *loaderror = NULL;
42	CFragConnectionID library_id;
43	Ptr mainAddr;
44	Str255 errName;
45	OSErr error;
46	char psofile[512];
47
48	SDL_strlcpy(psofile, sofile, SDL_arraysize(psofile));
49	error = GetSharedLibrary(C2PStr(psofile), kCompiledCFragArch,
50			kLoadCFrag, &library_id, &mainAddr, errName);
51	switch (error) {
52		case noErr:
53			loaderror = NULL;
54			break;
55		case cfragNoLibraryErr:
56			loaderror = "Library not found";
57			break;
58		case cfragUnresolvedErr:
59			loaderror = "Unabled to resolve symbols";
60			break;
61		case cfragNoPrivateMemErr:
62		case cfragNoClientMemErr:
63			loaderror = "Out of memory";
64			break;
65		default:
66			loaderror = "Unknown Code Fragment Manager error";
67			break;
68	}
69	if ( loaderror == NULL ) {
70		handle = (void *)(library_id);
71	} else {
72		SDL_SetError("Failed loading %s: %s", sofile, loaderror);
73	}
74	return(handle);
75}
76
77void *SDL_LoadFunction(void *handle, const char *name)
78{
79	void *symbol = NULL;
80	const char *loaderror = NULL;
81	CFragSymbolClass class;
82	CFragConnectionID library_id = (CFragConnectionID)handle;
83	char pname[512];
84
85	SDL_strlcpy(pname, name, SDL_arraysize(pname));
86	if ( FindSymbol(library_id, C2PStr(pname),
87	                (char **)&symbol, &class) != noErr ) {
88		loaderror = "Symbol not found";
89	}
90
91	if ( symbol == NULL ) {
92		SDL_SetError("Failed loading %s: %s", name, loaderror);
93	}
94	return(symbol);
95}
96
97void SDL_UnloadObject(void *handle)
98{
99	CFragConnectionID library_id;
100	if ( handle != NULL ) {
101		library_id = (CFragConnectionID)handle;
102		CloseConnection(&library_id);
103	}
104}
105
106#endif /* SDL_LOADSO_MACOS */
107