Add PRX/Stub Library Example/Guide

Dynamic Link is an essential part in PSP Programming. It's also the foundation of PSPSDK and CFW. However, current website doesn't include such guide on how to write export table, generate .S stub etc. One has to dive into Makefiles to figure out the complete process.

I'd like to add a guide to the current website that includes:

• How to build PRX for others to use

  • How to write C code for PRX program (module_start/module_stop)
  • How to write export table
  • How to use psp-build-exports -b to convert export table into C code
  • How to write correct Makefile (-nostartfiles flags etc)
  • How to generate .S file using psp-build-exports -k
  • How to generate .a Stub Library using psp-ar

• How to load PRX dynamically

  • System Calls such as sceKernelLoadModule, sceKernelFindModuleByUID, sceKernelStartModule (? Not quite familiar with this part)
  • What .S file does and how psp-fixup-imports works

• Other Topics

  • Kernel Module / User Module(?) Calling Constraints(?)

Looking forward to your suggestions!

まず、issue によれば読者が確認する必要がある、現在のウェブサイトと既存の Makefiles を調査します。psp-build-exports、psp-ar、psp-fixup-imports、および一覧にあるシステムコールを中心とした PRX のビルドと動的ロードのワークフローを調査します。ウェブサイトに、要求されたビルド、ロード、スタブライブラリ、およびモジュール制約に関するトピックを一貫したガイドとしてまとめられれば完了です。