wasmer-runtime-core 0.5.6

Wasmer runtime core library
Documentation 
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

#![allow(clippy::cast_ptr_alignment)]

use crate::{
    memory::{DynamicMemory, StaticMemory},
    structures::TypedIndex,
    types::{ImportedMemoryIndex, LocalMemoryIndex, LocalTableIndex},
    units::Pages,
    vm,
};

// +*****************************+
// |       LOCAL MEMORIES        |
// +****************************+

pub unsafe extern "C" fn local_static_memory_grow(
    ctx: &mut vm::Ctx,
    memory_index: LocalMemoryIndex,
    delta: Pages,
) -> i32 {
    let local_memory = *ctx.internal.memories.add(memory_index.index());
    let memory = (*local_memory).memory as *mut StaticMemory;

    let ret = match (*memory).grow(delta, &mut *local_memory) {
        Ok(old) => old.0 as i32,
        Err(_) => -1,
    };

    ctx.internal.memory_base = (*local_memory).base;
    ctx.internal.memory_bound = (*local_memory).bound;

    ret
}

pub unsafe extern "C" fn local_static_memory_size(
    ctx: &vm::Ctx,
    memory_index: LocalMemoryIndex,
) -> Pages {
    let local_memory = *ctx.internal.memories.add(memory_index.index());
    let memory = (*local_memory).memory as *mut StaticMemory;

    (*memory).size()
}

pub unsafe extern "C" fn local_dynamic_memory_grow(
    ctx: &mut vm::Ctx,
    memory_index: LocalMemoryIndex,
    delta: Pages,
) -> i32 {
    let local_memory = *ctx.internal.memories.add(memory_index.index());
    let memory = (*local_memory).memory as *mut DynamicMemory;

    let ret = match (*memory).grow(delta, &mut *local_memory) {
        Ok(old) => old.0 as i32,
        Err(_) => -1,
    };

    ctx.internal.memory_base = (*local_memory).base;
    ctx.internal.memory_bound = (*local_memory).bound;

    ret
}

pub unsafe extern "C" fn local_dynamic_memory_size(
    ctx: &vm::Ctx,
    memory_index: LocalMemoryIndex,
) -> Pages {
    let local_memory = *ctx.internal.memories.add(memory_index.index());
    let memory = (*local_memory).memory as *mut DynamicMemory;

    (*memory).size()
}

// +*****************************+
// |      IMPORTED MEMORIES      |
// +****************************+

pub unsafe extern "C" fn imported_static_memory_grow(
    ctx: &mut vm::Ctx,
    import_memory_index: ImportedMemoryIndex,
    delta: Pages,
) -> i32 {
    let local_memory = *ctx
        .internal
        .imported_memories
        .add(import_memory_index.index());
    let memory = (*local_memory).memory as *mut StaticMemory;

    let ret = match (*memory).grow(delta, &mut *local_memory) {
        Ok(old) => old.0 as i32,
        Err(_) => -1,
    };

    ctx.internal.memory_base = (*local_memory).base;
    ctx.internal.memory_bound = (*local_memory).bound;

    ret
}

pub unsafe extern "C" fn imported_static_memory_size(
    ctx: &vm::Ctx,
    import_memory_index: ImportedMemoryIndex,
) -> Pages {
    let local_memory = *ctx
        .internal
        .imported_memories
        .add(import_memory_index.index());
    let memory = (*local_memory).memory as *mut StaticMemory;

    (*memory).size()
}

pub unsafe extern "C" fn imported_dynamic_memory_grow(
    ctx: &mut vm::Ctx,
    memory_index: ImportedMemoryIndex,
    delta: Pages,
) -> i32 {
    let local_memory = *ctx.internal.imported_memories.add(memory_index.index());
    let memory = (*local_memory).memory as *mut DynamicMemory;

    let ret = match (*memory).grow(delta, &mut *local_memory) {
        Ok(old) => old.0 as i32,
        Err(_) => -1,
    };

    ctx.internal.memory_base = (*local_memory).base;
    ctx.internal.memory_bound = (*local_memory).bound;

    ret
}

pub unsafe extern "C" fn imported_dynamic_memory_size(
    ctx: &vm::Ctx,
    memory_index: ImportedMemoryIndex,
) -> Pages {
    let local_memory = *ctx.internal.imported_memories.add(memory_index.index());
    let memory = (*local_memory).memory as *mut DynamicMemory;

    (*memory).size()
}

// +*****************************+
// |        LOCAL TABLES         |
// +****************************+

pub unsafe extern "C" fn local_table_grow(
    ctx: &mut vm::Ctx,
    table_index: LocalTableIndex,
    delta: u32,
) -> i32 {
    let _ = table_index;
    let _ = delta;
    let _ = ctx;
    unimplemented!()
}

pub unsafe extern "C" fn local_table_size(ctx: &vm::Ctx, table_index: LocalTableIndex) -> u32 {
    let _ = table_index;
    let _ = ctx;
    unimplemented!()
}