sySimpleHookRel

Warning

Register context of the hooked function is not preserved with this method. Hooks will clobber the volatile registers.

Warning

The overwritten instruction at address is not run or preserved.

Signature

virtual void sySimpleHookRel(const u32 offset, const void* replacement, int moduleId);

Parameters

Parameter	Type	Description
address	u32	The address to hook
replacement	void*	function pointer to the hook body
moduleId	int	The ID of the rel to inject into

Description

Relative Hooking version of sySimpleHook

Example Usage

asm void myFunc() {
    // Don't need a stack frame.
    nofralloc

    // Return 0
    li r3, 0
    blr
}

void Init(CoreAPI* api) {
    // NOTE: Execution does not return to hook location
    // Inject our hook at offset 0x1fec into the module whose ID matches 0x1b
    api->sySimpleHook(0x1fec, reinterpret_cast<void*>(myFunc), 0x1b);
}