An error occurred while dumping 'Resident Evil 2 - beta2 (Japan)'

[yanmingsohu]

1. "unsupport for symbol type *sym.EndSLD not yet implemented"
2. "unable to locate overlay with ID 0"

[mewmew]

Hi @yanmingsohu

Happy to hear you are looking into gaining a better understanding of how Resident Evil 2 is implemented. The issue you are running into is similar to the one reported in #1, and stems from sym_dump not having complete support for every concept of the SYM file format.

I'd be glad to take a look and see if there is an easy fix, but to do so, I would need access to the SYM file to be able to reproduce the issue. Would you be able to provide a copy of the SYM file?

Cheers,
Robin

[yanmingsohu]

ok, this is
bio2-ps1-beta2.zip

[mewmew]

Hi @yanmingsohu!

Thanks for uploading the SYM file to reproduce this issue.

I've now updated sym_dump to handle symbol EndSLD without matching SetSLD (see 3c6f48e).

To be able to recreate the C headers, I had to add a few hacks (see e8d0237). These are now in the bio2 branch. Even if the implementation isn't perfect, hope it may help get some insight. Feel free to suggest improvements!

$ sym_dump -c -src MAIN.SYM
creating: _dump_/types.h
creating: _dump_/bio2/prog/cd.c
creating: _dump_/bio2/prog/config.c
creating: _dump_/bio2/prog/db_menu.c
creating: _dump_/bio2/prog/diedemo.c
creating: _dump_/bio2/prog/diespr.c
creating: _dump_/bio2/prog/door.c
creating: _dump_/bio2/prog/em2a.c
creating: _dump_/bio2/prog/em2a_sub.c
creating: _dump_/bio2/prog/em2b.c
creating: _dump_/bio2/prog/em2b_sub.c
creating: _dump_/bio2/prog/em2c.c
creating: _dump_/bio2/prog/em2d.c
creating: _dump_/bio2/prog/em2e.c
creating: _dump_/bio2/prog/em2f.c
creating: _dump_/bio2/prog/em3a.c
creating: _dump_/bio2/prog/em3b.c
creating: _dump_/bio2/prog/em3e.c
creating: _dump_/bio2/prog/em3f.c
creating: _dump_/bio2/prog/em10.c
creating: _dump_/bio2/prog/em10_s0.c
creating: _dump_/bio2/prog/em20.c
creating: _dump_/bio2/prog/em21.c
creating: _dump_/bio2/prog/em22.c
creating: _dump_/bio2/prog/em22_sub.c
creating: _dump_/bio2/prog/em23.c
creating: _dump_/bio2/prog/em25.c
creating: _dump_/bio2/prog/em25_s0.c
creating: _dump_/bio2/prog/em26.c
creating: _dump_/bio2/prog/em27.c
creating: _dump_/bio2/prog/em28.c
creating: _dump_/bio2/prog/em29.c
creating: _dump_/bio2/prog/em30.c
creating: _dump_/bio2/prog/em31.c
creating: _dump_/bio2/prog/em33.c
creating: _dump_/bio2/prog/em34.c
creating: _dump_/bio2/prog/em36.c
creating: _dump_/bio2/prog/em37.c
creating: _dump_/bio2/prog/em38.c
creating: _dump_/bio2/prog/em_set.c
creating: _dump_/bio2/prog/em_sub.c
creating: _dump_/bio2/prog/em_sub2.c
creating: _dump_/bio2/prog/ending.c
creating: _dump_/bio2/prog/esp.c
creating: _dump_/bio2/prog/esp_r.c
creating: _dump_/bio2/prog/game.c
creating: _dump_/bio2/prog/joint.c
creating: _dump_/bio2/prog/line_scr.c
creating: _dump_/bio2/prog/main.c
creating: _dump_/bio2/prog/md_sub.c
creating: _dump_/bio2/prog/mem_card.c
creating: _dump_/bio2/prog/mizu_sys.c
creating: _dump_/bio2/prog/mojidisp.c
creating: _dump_/bio2/prog/monitor.c
creating: _dump_/bio2/prog/movie.c
creating: _dump_/bio2/prog/oba.c
creating: _dump_/bio2/prog/om.c
creating: _dump_/bio2/prog/oma.c
creating: _dump_/bio2/prog/pad.c
creating: _dump_/bio2/prog/pc_event.c
creating: _dump_/bio2/prog/pc_sys.c
creating: _dump_/bio2/prog/player.c
creating: _dump_/bio2/prog/pl_wep.c
creating: _dump_/bio2/prog/pl_wep2.c
creating: _dump_/bio2/prog/poly_sub.c
creating: _dump_/bio2/prog/psp.c
creating: _dump_/bio2/prog/room.c
creating: _dump_/bio2/prog/root_ck.c
creating: _dump_/bio2/prog/sabun.c
creating: _dump_/bio2/prog/sca.c
creating: _dump_/bio2/prog/sce0.c
creating: _dump_/bio2/prog/sce1.c
creating: _dump_/bio2/prog/sce2.c
creating: _dump_/bio2/prog/sce_at.c
creating: _dump_/bio2/prog/snd.c
creating: _dump_/bio2/prog/spl.c
creating: _dump_/bio2/prog/spl_auto.c
creating: _dump_/bio2/prog/spl_sce.c
creating: _dump_/bio2/prog/spl_sp.c
creating: _dump_/bio2/prog/stage1.c
creating: _dump_/bio2/prog/stage2.c
creating: _dump_/bio2/prog/stage3.c
creating: _dump_/bio2/prog/stage4.c
creating: _dump_/bio2/prog/stage5.c
creating: _dump_/bio2/prog/stage6.c
creating: _dump_/bio2/prog/stage7.c
creating: _dump_/bio2/prog/status.c
creating: _dump_/bio2/prog/st_sub00.c
creating: _dump_/bio2/prog/st_sub01.c
creating: _dump_/bio2/prog/st_sub02.c
creating: _dump_/bio2/prog/st_sub04.c
creating: _dump_/bio2/prog/sub.c
creating: _dump_/bio2/prog/title.c
creating: _dump_/bio2/prog/trans.c
creating: _dump_/bio2/prog/t_atview.c
creating: _dump_/bio2/prog/t_block.c
creating: _dump_/bio2/prog/t_em_set.c
creating: _dump_/bio2/prog/t_esp.c
creating: _dump_/bio2/prog/t_floor.c
creating: _dump_/bio2/prog/t_kat0.c
creating: _dump_/bio2/prog/t_light.c
creating: _dump_/bio2/prog/t_psp.c
creating: _dump_/bio2/prog/t_rview.c
creating: _dump_/bio2/prog/t_sca.c
creating: _dump_/bio2/prog/t_sce_at.c
creating: _dump_/bio2/prog/t_snd.c
...

$ sym_dump -ida MAIN.SYM
creating: _dump_/make_psx.py
creating: _dump_/set_funcs.py
creating: _dump_/set_vars.py
creating: _dump_/make_psx.py
creating: _dump_/set_funcs.py
creating: _dump_/set_vars.py
creating: _dump_/overlay_4/make_psx.py
creating: _dump_/overlay_4/set_funcs.py
creating: _dump_/overlay_4/set_vars.py
...

Note, you need to change Git branch to the bio2 branch. Do so by running the following commands.

$ go get -u github.com/sanctuary/sym
$ cd $GOPATH/src/github.com/sanctuary/sym
$ git checkout bio2
Branch 'bio2' set up to track remote branch 'bio2' from 'origin'.
Switched to a new branch 'bio2'
$ go get github.com/sanctuary/sym/cmd/sym_dump

Extract C headers.

$ $GOPATH/bin/sym_dump -c -src MAIN.SYM
creating: _dump_/types.h
creating: _dump_/bio2/prog/cd.c
creating: _dump_/bio2/prog/config.c
creating: _dump_/bio2/prog/db_menu.c
...

Create IDA Python scripts.

$ $GOPATH/bin/sym_dump -ida MAIN.SYM
creating: _dump_/make_psx.py
creating: _dump_/set_funcs.py
creating: _dump_/set_vars.py
creating: _dump_/make_psx.py
creating: _dump_/set_funcs.py
creating: _dump_/set_vars.py
creating: _dump_/overlay_4/make_psx.py
creating: _dump_/overlay_4/set_funcs.py
creating: _dump_/overlay_4/set_vars.py
...

Hope that helps!

Cheers,
Robin

[yanmingsohu]

It is so CoOL!
Thanks!