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[laichung]

Dear all:

I'm trying to learn how to disassemble those function inside the kenrel prx (e.g usb.prx), but I have no knowledge about how to do it. Can anyone give me some information about how to start.

All I know is using the prxtools, extract the function name and NIDs. Using psp-objdump to dump all the source and disassemble the prx file. But after look at the disassemble file, I feel lost. I dont know how to find the "entry point" (is that the right name?) of those functions with those NIDs extracted from prxtool.

Thanks all.

[PSP250]

One (out of many) simple GUI based:

1. Get PS2Dis.
2. Use prxtool and the instructions from here.
3. Within PS2Dis press CTRL+G and select the NID/function you want ;)

The other options are using the IDA Pro disassembler or, as you already noted, psp-objdump disassembly, just that you pass the function entrypoint address (as fileoffset) with the "--start-address=ADDR" argument additionally.

[adrahil]

Use psp-objdump or pspdasm, get a good mips32 r4000 instruction reference, and a lot of patience...

[laichung]

Thanks all information~~~
Those disassemble files started to look meaningful~~