Callee cleans the stack and first two arguments are passed in registers ecx and edx.
You could emulate this by choosing stdcall and setting the custom_registers on the arguments manually, but this is easier.
Floats are always returned in FPU register st0. Since the value in st0 doesn't matter in a pre-hook before the function was executed, don't try to save and restore the value of the FPU stack top for a pre-hook.
Only replace st0 after a post hook.
When removing a plugin's callback from the list of callbacks of a detour
the next callback in the list would be skipped. Don't only check every second callback,
but every single one!
The this pointer was always passed to the plugin callback if the calling convention was a thiscall. Even if the plugin author set the this pointer type to ThisPointer_Ignore.
If a function was optimized to only pass one parameter in a register, but still pass other parameters on the stack, save the registers at the correct offset in the buffer.
If the compiler decided to pass an argument in a register on an internal function instead of pushing it on the stack to save time, allow us to specify the register the parameter is going to be in.
DHookAddParam received another parameter to set the register.
The custom return value was lost when calling the original function.
Save and restore our own return value, if we're about to call the original function.
