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791e321b43
TT_000 is the first overlay from PlayStation 1 that we are now able to compile from the source and produce a 1:1 binary. This lead me to start exploring the same overlay from the game Castlevania: Dracula X Chronicles, which contains a PSP re-build of Symphony of the Night. This PR adds all the infrastructure to add the same flow for a PSP matching decomp. Use `export VERSION=pspeu` and then the usual `sotn` command to splat the overlay, build it and check if it matches. Running `make extract_disk` should not be necessary as the same ISO used from `VERSION=hd` is also used for `pspeu`, so you will probably have it extracted already. Some important notes about the PSP build: * The whole PSP build seems to be compiled with `-O0`, which makes it much easier to decompile * Having ŧhe PSX, PSP and Saturn builds will allow to easily cross-reference the code and reduce fake matches * `disks/pspeu/PSP_GAME/USRDIR/res/ps/hdbin/tt_000.bin` is the HD PSX build * `disks/pspeu/PSP_GAME/USRDIR/res/ps/PSPBIN/tt_000.bin` has the same code from the HD build, but for PSP * `disks/pspeu/PSP_GAME/USRDIR/res/ps/PACK_E/TP00.BIN` is the same as above, but it packs both overlay and graphics. This is the file the PSP game seems to actually use * The PSP build uses the Metrowerk CodeWarrior's C compiler, which is very different from the GCC one used on PSX. * Thanks to @mkst lead, we found a way to still use the GNU assembler and linker * MWCC uses [wibo](https://github.com/decompals/WiBo/), a think compatibility layer to run Windows CLI tools on Linux. It is much more lightweight than Wine. * MWCC does not support the `INCLUDE_ASM` dialect, so the custom pre-processor `tools/mwcpp` had to be created * The exact MWCC compiler version is unknown, but I suspect it is `build 147` * I am not yet sure of any implications for using GNU AS and GNU LD instead of the MW correspondent tools * Not all the functions can be correctly disassembled, spimdisasm will just produce a bunch of `.word 0x________` due to the in-progress effort of adding the Allegrex-specific opcodes support --- TO-DO list before marking the PR as ready: - [X] Add PSP build to the CI - [x] Add progress reporting to the PSP build - [x] Integrate source file from `src/servant/tt_000_psp` to `src/servant/tt_000` to promote the psp build as first-citizen --- TO-DO in a follow-up PR: * Figure out what `header` is: can we extract it as assembly code? or maybe as custom re-compilable asset via splat? Is it a MW stuff or a Castlevania-specific file? * Get rid of the last line in `Makefile.psp.mk` |
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| .. | ||
| asm-differ@e8bddb0257 | ||
| dups | ||
| function_finder | ||
| gfxsotn | ||
| lints/sotn-lint | ||
| m2c@beb457dabf | ||
| maspsx@db2947b709 | ||
| n64splat@828c34950b | ||
| saturn-splitter@8d549a8042 | ||
| sotn_str | ||
| sotn-debugmodule | ||
| sotn-disk | ||
| splat_ext | ||
| split_jpt_yaml | ||
| vab-ex | ||
| analyze_calls.py | ||
| bin2c.py | ||
| decompile.py | ||
| dirt_patcher.py | ||
| gfxstage.py | ||
| m2ctx.py | ||
| mwcpp_test.py | ||
| mwcpp.py | ||
| permuter_settings.toml | ||
| png2bin.py | ||
| png2s.py | ||
| progress.py | ||
| requirements-debian.txt | ||
| requirements-python.txt | ||
| richter_symbols.py | ||
| spritesheet.py | ||
| symbols_test.py | ||
| symbols.py | ||
| tools.mk | ||
| update.h | ||