Trap-and-emulate guestOS SDL-based applications

[ChinYikMing]

Currently, the guest OS primarily uses its own syscall table. To enable it to run SDL-based applications, we may need to trap and emulate the SDL instruction, which would be handled by the rv32emu SDL backend.

Goal: at least able to run Doom, Quake and smolnes.

A simple demo is opening a white SDL screen.

[ChinYikMing]

Any chance to run mado?

[jserv]

Any chance to run mado?

Hopefully, Mado is designed as an advanced yet lean window system for resource-constrained environments, making it suitable for system emulation validation.