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func (p *Process) importer(name string) (*wasm.Module, error) { | |
switch name { | |
case "env": | |
m := wasm.NewModule() | |
m.Types = &wasm.SectionTypes{ | |
Entries: []wasm.FunctionSig{ | |
{ | |
Form: 0, | |
ParamTypes: []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32}, | |
ReturnTypes: []wasm.ValueType{wasm.ValueTypeI32}, | |
}, | |
{ | |
Form: 0, | |
ParamTypes: []wasm.ValueType{wasm.ValueTypeI32, wasm.ValueTypeI32, wasm.ValueTypeI32}, | |
ReturnTypes: []wasm.ValueType{wasm.ValueTypeI32}, | |
}, | |
{ | |
Form: 0, | |
ParamTypes: []wasm.ValueType{wasm.ValueTypeI32}, | |
ReturnTypes: []wasm.ValueType{wasm.ValueTypeI32}, | |
}, | |
}, | |
} | |
m.FunctionIndexSpace = []wasm.Function{ | |
{ | |
Sig: &m.Types.Entries[0], | |
Host: reflect.ValueOf(p.log), | |
Body: &wasm.FunctionBody{}, | |
}, | |
{ | |
Sig: &m.Types.Entries[0], | |
Host: reflect.ValueOf(p.open), | |
Body: &wasm.FunctionBody{}, | |
}, | |
{ | |
Sig: &m.Types.Entries[1], | |
Host: reflect.ValueOf(p.write), | |
Body: &wasm.FunctionBody{}, | |
}, | |
{ | |
Sig: &m.Types.Entries[1], | |
Host: reflect.ValueOf(p.read), | |
Body: &wasm.FunctionBody{}, | |
}, | |
{ | |
Sig: &m.Types.Entries[2], | |
Host: reflect.ValueOf(p.close), | |
Body: &wasm.FunctionBody{}, | |
}, | |
{ | |
Sig: &m.Types.Entries[2], | |
Host: reflect.ValueOf(isatty), | |
Body: &wasm.FunctionBody{}, | |
}, | |
{ | |
Sig: &m.Types.Entries[2], | |
Host: reflect.ValueOf(p.unlink), | |
Body: &wasm.FunctionBody{}, | |
}, | |
} | |
m.Export = &wasm.SectionExports{ | |
Entries: map[string]wasm.ExportEntry{ | |
"log": { | |
FieldStr: "log", | |
Kind: wasm.ExternalFunction, | |
Index: 0, | |
}, | |
"open": { | |
FieldStr: "open", | |
Kind: wasm.ExternalFunction, | |
Index: 1, | |
}, | |
"write": { | |
FieldStr: "write", | |
Kind: wasm.ExternalFunction, | |
Index: 2, | |
}, | |
"read": { | |
FieldStr: "read", | |
Kind: wasm.ExternalFunction, | |
Index: 3, | |
}, | |
"close": { | |
FieldStr: "close", | |
Kind: wasm.ExternalFunction, | |
Index: 4, | |
}, | |
"isatty": { | |
FieldStr: "isatty", | |
Kind: wasm.ExternalFunction, | |
Index: 5, | |
}, | |
"unlink": { | |
FieldStr: "unlink", | |
Kind: wasm.ExternalFunction, | |
Index: 6, | |
}, | |
}, | |
} | |
return m, nil | |
default: | |
f, err := os.Open(name + ".wasm") | |
if err != nil { | |
return nil, err | |
} | |
defer f.Close() | |
m, err := wasm.ReadModule(f, nil) | |
if err != nil { | |
return nil, err | |
} | |
err = validate.VerifyModule(m) | |
if err != nil { | |
return nil, err | |
} | |
return m, nil | |
} | |
} |
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