Smali —— 数学运算，条件判断，循环

public class BaseSmali {
    private float add() {
        int a = 1;
        float b = 1.5f;
        return  a + b;
    }
}
复制代码

.class public LBaseSmali;
.super Ljava/lang/Object;
.source "BaseSmali.java"
# direct methods
.method public constructor <init>()V
    .registers 1
    .prologue
    .line 1
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V
    return-void
.end method
.method private add()F
    .registers 3 // 使用 3 个寄存器
    .prologue
    .line 5
    const/4 v0, 0x1 // 将 0x1 放入 v0
    .line 6
    const/high16 v1, 0x3fc00000    # 1.5f 将 1.5f 放入 v1
    .line 7
    int-to-float v0, v0 // 将 v0 中的 int 值强转为 float 再存入 v0
    add-float/2addr v0, v1 // 将 v0 和 v1 中的值相加再存入 v0
    return v0 // 返回 v0 中的值
.end method
复制代码

add-float/2addr v0, v1 // 将 v0 和 v1 中的值相加再存入 v0
复制代码

add-float v0, v1, v2 // 将 v1 和 v2 中的值相加再存入 v0
复制代码

private float add() {
    int a = 1;
    float b = 1.5f;
    return  a + b;
}
复制代码

private double sub(){
        int a = 1;
        double b = 2.5;
        return a-b;
    }
复制代码

.method private sub()D
    .registers 5
    .prologue
    .line 11
    const/4 v0, 0x1
    .line 12
    const-wide/high16 v2, 0x4004000000000000L    # 2.5
    .line 13
    int-to-double v0, v0
    sub-double/2addr v0, v2
    return-wide v0
.end method
复制代码

private double mul(){
        float a = 1.5f;
        double b = 2;
        return a * b;
    }
复制代码

.method private mul()D
    .registers 5
    .prologue
    .line 17
    const/high16 v0, 0x3fc00000    # 1.5f
    .line 18
    const-wide/high16 v2, 0x4000000000000000L    # 2.0
    .line 19
    float-to-double v0, v0
    mul-double/2addr v0, v2
    return-wide v0
.end method
复制代码

private int div() {
        int a = 3;
        int b = 2;
        int c = a / b;
        return c;
    }
复制代码

.method private div()I
    .registers 2
    .prologue
    .line 23
    .line 25
    const/4 v0, 0x1
    .line 26
    return v0
.end method
复制代码

.method private div()I
    .registers 4
    .prologue
    .line 28
    const/4 v0, 0x3
    .line 29
    .local v0, "a":I
    const/4 v1, 0x2
    .line 30
    .local v1, "b":I
    div-int v2, v0, v1
    .line 31
    .local v2, "c":I
    return v2
.end method
复制代码

private boolean bool(boolean a, boolean b,boolean c) {
        return a && b || c;
    }
复制代码

.method private bool(ZZZ)Z
    .registers 5
    .prologue
    .line 35
    if-eqz p1, :cond_4 // 如果 p1 = 0, 跳至 cond_4 处
    if-nez p2, :cond_6 // 如果 p2 != 0，跳至 cond_6 处
    :cond_4
    if-eqz p3, :cond_8 // 如果 p3 = 0，跳至 cond_8 处
    :cond_6
    const/4 v0, 0x1 // 将 0x1 赋给 v0
    :goto_7
    return v0 // 返回 v0 的值
    :cond_8
    const/4 v0, 0x0 // 将 0x1 赋给 v0
    goto :goto_7 // 跳至 goto_7 处
.end method
复制代码

private void other(int a) {
        int or = a | 1;
        int and = a & 1;
        int right = a >> 2;
        int left = a << 2;
        int mod = a % 2;
    }
复制代码

.method private other(I)V
    .registers 3
    .prologue
    .line 39
    or-int/lit8 v0, p1, 0x1
    .line 40
    and-int/lit8 v0, p1, 0x1
    .line 41
    shr-int/lit8 v0, p1, 0x2
    .line 42
    shl-int/lit8 v0, p1, 0x2
    .line 43
    rem-int/lit8 v0, p1, 0x2
    .line 44
    return-void
.end method
复制代码

private void loop(){
        for (int i=0;i<10;i++){
            System.out.println(i);
        }
    }
复制代码

.method private loop()V
    .registers 3
    .prologue
    .line 47
    const/4 v0, 0x0 // v0 = 0
    :goto_1
    const/16 v1, 0xa // v1 = 10
    if-ge v0, v1, :cond_d // 如果 v0 >= v1，跳至 cond_d 处
    .line 48
    sget-object v1, Ljava/lang/System;->out:Ljava/io/PrintStream;
    invoke-virtual {v1, v0}, Ljava/io/PrintStream;->println(I)V
    .line 47
    add-int/lit8 v0, v0, 0x1 // v0++
    goto :goto_1 // 跳转至 goto_1 处
    .line 50
    :cond_d
    return-void
.end method
复制代码