Alice Averlong🏳️⚧️hmm. I need to either start building documentation about which of my 13 current Ghidra installs have which extensions installed, or I need to set up a ghidra build environment and commit to maintaining a One True Ghidra environment with all the extensions
I keep having the problem of "now which one of these has that PSX loader installed in it?"
(the answer was ghidra 10.2.3 if you even care)
ugh. I'm gonna have to find the font for this game, not for the usual reasons (death generators), but because I'm trying to find the code powering a specific screen (The character viewer) but the text from it doesn't show up in a strings search.
because it's not ASCII. ;_;
it might be full-width latin characters. possibly encoded in shift-jis.
sadly ghidra doesn't know how to find that
maybe I can write a program to search for full-width characters in common encodings
Turns out the text IS in ascii, it's just in a datafile and not the executable.
so that doesn't help me
it was a good idea of them to put all the strings in a datafile instead of the executable! really handy for localization.
oh, this game was only ever released in japan? huh
oh I think this game is doing tricksy shit.
I think it's dynamically loading code out of datafiles and launching them. So the main executable is just the loader and archive-parser
I think it's dynamically loading code out of datafiles and launching them. So the main executable is just the loader and archive-parser
why the heck does the PS1 have a "NoFunction" syscall?
I know about NOPs, by why a NOP syscall?
it has been zero days since I crashed an emulator
ahh, fucking MIPS.
How do you get a full 32bit address into a register?
MOV EAX,800771DC ?
NO GET THAT X86 BULLSHIT OUT OF HERE.
lui v0,0x8007
addiu v0,v0,0x6e50
addiu v0,v0,0x404
that's an address encoding that'll put some hair on your chest!
slaeshjag@foone this kind of bulllshit is why I've always hated writing assembly for RISC architectures. I mean sure, there's macros in the assembler, but is this really what peak performance is supposed to look like?
walter4096its a good tradeoff.
full address literals are rare
there's usually a register pointing at some globals area - allowing quick access with 16bit offsets - and if real 32bit addresses were critical you could store them as constants there to load
most addresses that programs deal with are offsets from struct pointers, array offsets etc
RISC is designed to be easier for compilers to deal with.
I did enjoy writing 68000 CISC ASM on the amiga but the focus changes over time