1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/* Copyright (c) 1997-1999 Miller Puckette.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
#ifdef DL_OPEN
#include <dlfcn.h>
#endif
#ifdef UNISTD
#include <stdlib.h>
#include <unistd.h>
#endif
#ifdef MSW
#include <io.h>
#include <windows.h>
#endif
#ifdef MACOSX
#include <mach-o/dyld.h>
#endif
#include <string.h>
#include "m_pd.h"
#include "s_stuff.h"
#include <stdio.h>
typedef void (*t_xxx)(void);
/* naming convention for externs. The names are kept distinct for those
who wich to make "fat" externs compiled for many platforms. Less specific
fallbacks are provided, primarily for back-compatibility; these suffice if
you are building a package which will run with a single set of compiled
objects. The specific name is the letter b, l, d, or m for BSD, linux,
darwin, or microsoft, followed by a more specific string, either "fat" for
a fat binary or an indication of the instruction set. */
#ifdef __FreeBSD__
static char sys_dllextent[] = ".b_i386", sys_dllextent2[] = ".pd_freebsd";
#endif
#ifdef __linux__
#ifdef __ia64__
static char sys_dllextent[] = ".l_ia64", sys_dllextent2[] = ".pd_linux";
#else
static char sys_dllextent[] = ".l_i386", sys_dllextent2[] = ".pd_linux";
#endif
#endif
#ifdef MACOSX
#ifdef __i386__
static char sys_dllextent[] = ".d_fat", sys_dllextent2[] = ".pd_darwin";
#else
static char sys_dllextent[] = ".d_ppc", sys_dllextent2[] = ".pd_darwin";
#endif
#endif
#ifdef MSW
static char sys_dllextent[] = ".m_i386", sys_dllextent2[] = ".dll";
#endif
void class_set_extern_dir(t_symbol *s);
static int sys_do_load_lib(char *dirname, char *classname)
{
char symname[MAXPDSTRING], filename[MAXPDSTRING], dirbuf[MAXPDSTRING],
*nameptr, altsymname[MAXPDSTRING];
void *dlobj;
t_xxx makeout = NULL;
int i, hexmunge = 0, fd;
#ifdef MSW
HINSTANCE ntdll;
#endif
for (i = 0, nameptr = classname; i < MAXPDSTRING-7 && *nameptr; nameptr++)
{
char c = *nameptr;
if ((c>='0' && c<='9') || (c>='A' && c<='Z')||
(c>='a' && c<='z' )|| c == '_')
{
symname[i] = c;
i++;
}
/* trailing tilde becomes "_tilde" */
else if (c == '~' && nameptr[1] == 0)
{
strcpy(symname+i, "_tilde");
i += strlen(symname+i);
}
else /* anything you can't put in a C symbol is sprintf'ed in hex */
{
sprintf(symname+i, "0x%02x", c);
i += strlen(symname+i);
hexmunge = 1;
}
}
symname[i] = 0;
if (hexmunge)
{
memmove(symname+6, symname, strlen(symname+1));
strncpy(symname, "setup_", 6);
}
else strcat(symname, "_setup");
#if 0
fprintf(stderr, "lib %s %s\n", dirname, classname);
#endif
/* try looking in the path for (classname).(sys_dllextent) ... */
if ((fd = open_via_path(dirname, classname, sys_dllextent,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
/* same, with the more generic sys_dllextent2 */
if ((fd = open_via_path(dirname, classname, sys_dllextent2,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
/* next try (classname)/(classname).(sys_dllextent) ... */
strncpy(filename, classname, MAXPDSTRING);
filename[MAXPDSTRING-2] = 0;
strcat(filename, "/");
strncat(filename, classname, MAXPDSTRING-strlen(filename));
filename[MAXPDSTRING-1] = 0;
if ((fd = open_via_path(dirname, filename, sys_dllextent,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
if ((fd = open_via_path(dirname, filename, sys_dllextent2,
dirbuf, &nameptr, MAXPDSTRING, 1)) >= 0)
goto gotone;
return (0);
gotone:
close(fd);
class_set_extern_dir(gensym(dirbuf));
/* rebuild the absolute pathname */
strncpy(filename, dirbuf, MAXPDSTRING);
filename[MAXPDSTRING-2] = 0;
strcat(filename, "/");
strncat(filename, nameptr, MAXPDSTRING-strlen(filename));
filename[MAXPDSTRING-1] = 0;
#ifdef DL_OPEN
dlobj = dlopen(filename, RTLD_NOW | RTLD_GLOBAL);
if (!dlobj)
{
post("%s: %s", filename, dlerror());
class_set_extern_dir(&s_);
return (0);
}
makeout = (t_xxx)dlsym(dlobj, symname);
#endif
#ifdef MSW
sys_bashfilename(filename, filename);
ntdll = LoadLibrary(filename);
if (!ntdll)
{
post("%s: couldn't load", filename);
class_set_extern_dir(&s_);
return (0);
}
makeout = (t_xxx)GetProcAddress(ntdll, symname);
#endif
if (!makeout)
{
post("load_object: Symbol \"%s\" not found", symname);
class_set_extern_dir(&s_);
return 0;
}
(*makeout)();
class_set_extern_dir(&s_);
return (1);
}
/* callback type definition */
typedef int (*loader_t)(char *dirname, char *classname);
/* linked list of loaders */
typedef struct loader_queue {
loader_t loader;
struct loader_queue *next;
} loader_queue_t;
static loader_queue_t loaders = {sys_do_load_lib, NULL};
/* register class loader function */
void sys_register_loader(loader_t loader)
{
loader_queue_t *q = &loaders;
while (1)
{
if (q->next)
q = q->next;
else
{
q->next = (loader_queue_t *)getbytes(sizeof(loader_queue_t));
q->next->loader = loader;
q->next->next = NULL;
break;
}
}
}
int sys_load_lib(char *dirname, char *classname)
{
int dspstate = canvas_suspend_dsp();
int ok = 0;
loader_queue_t *q;
for(q = &loaders; q; q = q->next)
if(ok = q->loader(dirname, classname)) break;
canvas_resume_dsp(dspstate);
return ok;
}
|
