It is an easily verifiable fact that the C function H does correctly
determine that the C function named P would never reach its last
instruction when correctly emulated by H.
That you would disagree with verified facts makes you either technically
incompetent or a liar.
It is dead obvious that when H(P,P) correctly emulates its input that
the first 7 instructions of P are emulated.
It is also dead obvious that when P calls H(P,P) that H emulates the
first 7 instructions of P again.
This makes it dead obvious that the correct x86 emulation of the input
to H(P,P) never reaches its last instruction and halts.