summaryrefslogtreecommitdiff
path: root/ext/dl/dl.c
blob: 4473e8d498bf9008e6dfbb40513d8b917d06312f (plain)
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
#include <ruby.h>
#include <rubyio.h>
#include <version.h>
#include <ctype.h>
#include "dl.h"

VALUE rb_mDL;
VALUE rb_eDLError;
VALUE rb_eDLTypeError;

ID rbdl_id_cdecl;
ID rbdl_id_stdcall;

VALUE
rb_dl_dlopen(int argc, VALUE argv[], VALUE self)
{
    rb_secure(2);
    return rb_class_new_instance(argc, argv, rb_cDLHandle);
}

VALUE
rb_dl_malloc(VALUE self, VALUE size)
{
    void *ptr;

    ptr = (void*)ruby_xmalloc(NUM2INT(size));
    return PTR2NUM(ptr);
}

VALUE
rb_dl_realloc(VALUE self, VALUE addr, VALUE size)
{
    void *ptr = NUM2PTR(addr);

    ptr = (void*)ruby_xrealloc(ptr, NUM2INT(size));
    return PTR2NUM(ptr);
}

VALUE
rb_dl_free(VALUE self, VALUE addr)
{
    void *ptr = NUM2PTR(addr);
    ruby_xfree(ptr);
    return Qnil;
}

VALUE
rb_dl_ptr2value(VALUE self, VALUE addr)
{
    return (VALUE)NUM2PTR(addr);
}

VALUE
rb_dl_value2ptr(VALUE self, VALUE val)
{
    return PTR2NUM((void*)val);
}

#if defined(__GNUC__)
# define PRE_DECL_CDECL     __attribute__((cdecl))
# define PRE_DECL_STDCALL   __attribute__((stdcall))
# define MIDST_DECL_CDECL
# define MIDST_DECL_STDCALL
# define POST_DECL_CDECL
# define POST_DECL_STDCALL
#elif defined(_MSC_VER) || defined(__BORLANDC__)
# define PRE_DECL_CDECL
# define PRE_DECL_STDCALL
# define MIDST_DECL_CDECL     __cdecl
# define MIDST_DECL_STDCALL   __stdcall
# define POST_DECL_CDECL
# define POST_DECL_STDCALL
#else
# error "unsupported compiler"
#endif

#include "callback.h"

void
Init_dl()
{
    void Init_dlhandle();
    void Init_dlcfunc();
    void Init_dlptr();

    rbdl_id_cdecl = rb_intern("cdecl");
    rbdl_id_stdcall = rb_intern("stdcall");

    rb_mDL = rb_define_module("DL");
    rb_eDLError = rb_define_class_under(rb_mDL, "DLError", rb_eStandardError);
    rb_eDLTypeError = rb_define_class_under(rb_mDL, "DLTypeError", rb_eDLError);

    rb_define_const(rb_mDL, "MAX_CALLBACK", INT2NUM(MAX_CALLBACK));
    rb_define_const(rb_mDL, "DLSTACK_SIZE", INT2NUM(DLSTACK_SIZE));

    rb_dl_init_callbacks();

    rb_define_const(rb_mDL, "RTLD_GLOBAL", INT2NUM(RTLD_GLOBAL));
    rb_define_const(rb_mDL, "RTLD_LAZY",   INT2NUM(RTLD_LAZY));
    rb_define_const(rb_mDL, "RTLD_NOW",    INT2NUM(RTLD_NOW));

    rb_define_const(rb_mDL, "TYPE_VOID",  INT2NUM(DLTYPE_VOID));
    rb_define_const(rb_mDL, "TYPE_VOIDP",  INT2NUM(DLTYPE_VOIDP));
    rb_define_const(rb_mDL, "TYPE_CHAR",  INT2NUM(DLTYPE_CHAR));
    rb_define_const(rb_mDL, "TYPE_SHORT",  INT2NUM(DLTYPE_SHORT));
    rb_define_const(rb_mDL, "TYPE_INT",  INT2NUM(DLTYPE_INT));
    rb_define_const(rb_mDL, "TYPE_LONG",  INT2NUM(DLTYPE_LONG));
#if HAVE_LONG_LONG
    rb_define_const(rb_mDL, "TYPE_LONG_LONG",  INT2NUM(DLTYPE_LONG_LONG));
#endif
    rb_define_const(rb_mDL, "TYPE_FLOAT",  INT2NUM(DLTYPE_FLOAT));
    rb_define_const(rb_mDL, "TYPE_DOUBLE",  INT2NUM(DLTYPE_DOUBLE));

    rb_define_const(rb_mDL, "ALIGN_VOIDP", INT2NUM(ALIGN_VOIDP));
    rb_define_const(rb_mDL, "ALIGN_CHAR",  INT2NUM(ALIGN_CHAR));
    rb_define_const(rb_mDL, "ALIGN_SHORT", INT2NUM(ALIGN_SHORT));
    rb_define_const(rb_mDL, "ALIGN_INT",   INT2NUM(ALIGN_INT));
    rb_define_const(rb_mDL, "ALIGN_LONG",  INT2NUM(ALIGN_LONG));
#if HAVE_LONG_LONG
    rb_define_const(rb_mDL, "ALIGN_LONG_LONG",  INT2NUM(ALIGN_LONG_LONG));
#endif
    rb_define_const(rb_mDL, "ALIGN_FLOAT", INT2NUM(ALIGN_FLOAT));
    rb_define_const(rb_mDL, "ALIGN_DOUBLE",INT2NUM(ALIGN_DOUBLE));

    rb_define_const(rb_mDL, "SIZEOF_VOIDP", INT2NUM(sizeof(void*)));
    rb_define_const(rb_mDL, "SIZEOF_CHAR",  INT2NUM(sizeof(char)));
    rb_define_const(rb_mDL, "SIZEOF_SHORT", INT2NUM(sizeof(short)));
    rb_define_const(rb_mDL, "SIZEOF_INT",   INT2NUM(sizeof(int)));
    rb_define_const(rb_mDL, "SIZEOF_LONG",  INT2NUM(sizeof(long)));
#if HAVE_LONG_LONG
    rb_define_const(rb_mDL, "SIZEOF_LONG_LONG",  INT2NUM(sizeof(LONG_LONG)));
#endif
    rb_define_const(rb_mDL, "SIZEOF_FLOAT", INT2NUM(sizeof(float)));
    rb_define_const(rb_mDL, "SIZEOF_DOUBLE",INT2NUM(sizeof(double)));

    rb_define_module_function(rb_mDL, "dlwrap", rb_dl_value2ptr, 1);
    rb_define_module_function(rb_mDL, "dlunwrap", rb_dl_ptr2value, 1);

    rb_define_module_function(rb_mDL, "dlopen", rb_dl_dlopen, -1);
    rb_define_module_function(rb_mDL, "malloc", rb_dl_malloc, 1);
    rb_define_module_function(rb_mDL, "realloc", rb_dl_realloc, 2);
    rb_define_module_function(rb_mDL, "free", rb_dl_free, 1);

    rb_define_const(rb_mDL, "RUBY_FREE", PTR2NUM(ruby_xfree));
    rb_define_const(rb_mDL, "BUILD_RUBY_PLATFORM", rb_str_new2(RUBY_PLATFORM));
    rb_define_const(rb_mDL, "BUILD_RUBY_VERSION",  rb_str_new2(RUBY_VERSION));

    Init_dlhandle();
    Init_dlcfunc();
    Init_dlptr();
}