### Install Replacement Hook at Function Pointer

Source: https://github.com/shadowninja108/exlaunch/wiki/Hooking

Installs the HookClass replacement hook by hooking a provided function pointer. The callback function's signature must match the hooked function to preserve ABI.

```cpp
HookClass::InstallAtFuncPtr(nn::oe::SetCopyrightVisibility);
```

--------------------------------

### Install Replacement Hook at Address

Source: https://github.com/shadowninja108/exlaunch/wiki/Hooking

Installs the HookClass replacement hook at a specific absolute memory address. This must be called at runtime.

```cpp
HookClass::InstallAtPtr(calculated_address);
```

--------------------------------

### Install Replacement Hook at Offset

Source: https://github.com/shadowninja108/exlaunch/wiki/Hooking

Installs the HookClass replacement hook at a specific memory offset within the main executable. This must be called at runtime.

```cpp
HookClass::InstallAtOffset(0x420420);
```

--------------------------------

### Define a Replacement Hook

Source: https://github.com/shadowninja108/exlaunch/wiki/Hooking

Declares a replacement hook named HookClass. The callback function replaces the original function entirely. Arguments are passed directly to the callback.

```cpp
HOOK_DEFINE_REPLACE(HookClass) {
    static int Callback(int arg1, int arg2) {
        return arg1 + arg2;
    }
};
```

--------------------------------

### Define a Trampoline Hook

Source: https://github.com/shadowninja108/exlaunch/wiki/Hooking

Declares a trampoline hook named HookClass. The original function is preserved and can be called via the 'Orig' alias within the callback.

```cpp
HOOK_DEFINE_TRAMPOLINE(HookClass) {
    static int Callback(int arg1, int arg2) {
        return Orig(4, 20) + 6 + 9;
    }
};
```

--------------------------------

### Define an Inline Hook

Source: https://github.com/shadowninja108/exlaunch/wiki/Hooking

Declares an inline hook named HookClass. This hook allows access to and modification of caller registers via an exl::hook::InlineCtx pointer.

```cpp
HOOK_DEFINE_INLINE(HookClass) {
    static void Callback(exl::hook::InlineCtx* ctx) {
        char buf[100];
        for(int i = 0; i < 29; i++) {
            LOG("X%d: %lx", i, ctx->X[i]);
        }
        LOG("FP: %lx", ctx->X[29]);
        LOG("LR: %lx", ctx->X[30]);
    }
};
```

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