wasmi 0.38.0

WebAssembly interpreter
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

use super::*;

const WASM_OP: WasmOp = WasmOp::binary(WasmType::I32, "sub");

#[test]
#[cfg_attr(miri, ignore)]
fn same_reg() {
    let expected = [Instruction::ReturnImm32 {
        value: AnyConst32::from(0),
    }];
    test_binary_same_reg(WASM_OP, expected)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_reg() {
    test_binary_reg_reg(WASM_OP, Instruction::i32_sub)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm16() {
    let value = 100;
    let rhs = <Const16<i32>>::from(-value);
    test_binary_reg_imm_with::<i32, _>(
        WASM_OP,
        i32::from(value),
        [
            Instruction::i32_add_imm16(Reg::from(1), Reg::from(0), rhs),
            Instruction::return_reg(1),
        ],
    )
    .run()
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm16_lhs() {
    test_binary_reg_imm16_lhs::<i32>(WASM_OP, 100, Instruction::i32_sub_imm16_lhs)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm() {
    test_reg_imm(i32::MAX);
    test_reg_imm(i32::MAX - 1);
    test_reg_imm(i32::MIN);
    test_reg_imm(i32::MIN + 1);
    test_reg_imm(i32::from(i16::MIN));
    test_reg_imm(i32::from(i16::MAX) + 2);
}

fn test_reg_imm(value: i32) {
    let mut testcase = testcase_binary_reg_imm(WASM_OP, value);
    testcase.expect_func(
        ExpectedFunc::new([
            Instruction::i32_add(Reg::from(1), Reg::from(0), Reg::from(-1)),
            Instruction::return_reg(Reg::from(1)),
        ])
        .consts([value.wrapping_neg()]),
    );
    testcase.run()
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_imm_lhs() {
    test_binary_reg_imm32_lhs(WASM_OP, i32::MAX, Instruction::i32_sub)
}

#[test]
#[cfg_attr(miri, ignore)]
fn reg_zero() {
    let expected = [Instruction::return_reg(0)];
    test_binary_reg_imm_with(WASM_OP, 0i32, expected).run()
}

#[test]
#[cfg_attr(miri, ignore)]
fn consteval() {
    let lhs = 1;
    let rhs = 2;
    test_binary_consteval(
        WASM_OP,
        lhs,
        rhs,
        [Instruction::ReturnImm32 {
            value: AnyConst32::from(lhs - rhs),
        }],
    )
}