ps2_drivers

A library for making it easier to use IO drivers (.IRX + EE .a)

MOTIVATION

This library will make it way easier to load/unload and initialize the process of Drivers that requires IOP (using an IRX file) and EE (static library .a).

As a side project, I was trying to port SDL2 for PlayStation 2, and meanwhile, I was working on this since I found that it was difficult to implement SDL_main as was.

Without this, the current situation assumes:

• The developer needs to understand how IOP + EE works, making it a less attractive platform to newcomers.
• Makefiles are more complex. IRX files need to be either embedded with bin2s or bin2o.
• A lot of boilerplate is needed, for defining several extern libraries.
• It forces developers to copy & paste every time.
• Error handling is too messy.

With the solution that I propose within this library, the developer just needs to link the library and initiate the desired libraries.

EXAMPLE

Let me put an example, where we compare Before vs After. I'm not going to put the error handling in the before version otherwise will be too long :)

BEFORE

Makefile

IRX_FILES += sio2man.irx
IRX_FILES += mtapman.irx padman.irx

EE_OBJS += $(IRX_FILES:.irx=_irx.o)

LIBS += -lmtap -lpadx

# IRX files
%_irx.c:
	$(PS2SDK)/bin/bin2c $(PS2SDK)/iop/irx/$*.irx $@ $*_irx

main.c

extern unsigned char sio2man_irx[] __attribute__((aligned(16)));
extern unsigned int size_sio2man_irx;

extern unsigned char mtapman_irx[] __attribute__((aligned(16)));
extern unsigned int size_mtapman_irx;

extern unsigned char padman_irx[] __attribute__((aligned(16)));
extern unsigned int size_padman_irx;

void load_modules(void) {
    SifExecModuleBuffer(&sio2man_irx, size_sio2man_irx, 0, NULL, NULL);
    SifExecModuleBuffer(&mtapman_irx, size_mtapman_irx, 0, NULL, NULL);
    SifExecModuleBuffer(&padman_irx, size_padman_irx, 0, NULL, NULL);
}

void start_libraries(void) {
    mtapInit();
    padInit(0);
}

int main(int argc, char **argv) {
    .......
    load_modules();
    start_libraries();
}

AFTER

Makefile

LIBS += -lps2_drivers

main.c

int main(int argc, char **argv) {
    .......
    init_joystick_driver(true);
}

ALL DRIVERS EXAMPLE

This example will prepare, the next drivers:

• Memory Card
• FileXio
• USB
• CDFS
• Sound
• Joystick
• Poweroff
• HDD

Makefile

LIBS += -lps2_drivers

main.c

static void prepare_drivers() {
    init_fileXio_driver();
    init_memcard_driver(true);
    init_usb_driver(true);
    init_cdfs_driver();
    init_joystick_driver(true);
    init_audio_driver();
    init_poweroff_driver();
    init_hdd_driver(true, true);
}

int main(int argc, char **argv) {
    prepare_drivers();
}

CONCLUSION

I tried to follow the KISS concept while implementing this library

THANKS