As nobody replied you let me send you my opinion.
Unless someone is already busy working on it (which I doubt), I'm afraid you have to implement yourself (one of) possible ppc backend (32bit, 64bit BE, LE ...).
From: Tinycc-devel [mailto:tinycc-devel-bounces+eligis=[hidden email]] On Behalf Of Carlos Rodrigues
Sent: Friday, December 20, 2019 11:44
To: [hidden email] Subject: [Tinycc-devel] PowerPC support
Is there any plan or branch that already had the support to generate the
executable for PowerPC?