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185 Commits

Author SHA1 Message Date
nmlgc eace57b1a2 Wrap all code segments into their own group 
Necessary to keep the original segment ordering with ALINK, our new linker.
 2014-09-22 22:19:29 +02:00
nmlgc 00e2dcb519 Remove comments containing garbage characters 
... as well as other useless comments that were in close proximity to those.
Now, all files should be valid Shift-JIS.
 2014-09-18 20:41:06 +02:00
nmlgc 1e991fbec0 Remove automatically generated line breaks in string constants 
Especially annoying if that happens in the middle of a Shift-JIS multi-byte
sequence, like in those two instances in TH02's OP.EXE. Also, making up for
the lack of string analysis during the dumping process of TH05's MAIN.EXE.
 2014-09-17 06:24:22 +02:00
nmlgc 274b37eed7 [Reduction] #504: master.lib version string 
Fulfilling the original licensing conditions... I think.
 2014-09-16 04:11:09 +02:00
nmlgc 86b86a96b8 [Reduction] #503: graph_gaiji_puts 2014-09-15 03:03:52 +02:00
nmlgc a4a5bc9df9 [Reduction] #502: graph_gaiji_putc 
Introducing MASTERMOD v3. How long until a GAME_NUMBER macro? (Answer: Once we
find ZUN code that slightly changed between games.)
 2014-09-14 17:39:30 +02:00
nmlgc 69f85fa2de Identify and reduce gaiji strings across all executables 2014-09-13 12:26:33 +02:00
nmlgc cd7b956be6 [Reduction] #501: mbctype 
Yup, ZUN makes use of this structure. In combination with master.lib.
 2014-09-12 08:34:43 +02:00
nmlgc 80fc5c6d82 [Reduction] #496: mem_unassign 
Which challenges a lot about what we thought to know about Amusement Makers'
modifications to master.lib, due to the fact that TH02 contains the modified
version of this function, but the original of draw_trapezoid...

And I haven't even begun to research how this removal of conditional branches
could have a positive effect on the game, especially since it's only called
before exiting anyway.
 2014-09-08 20:47:09 +02:00
nmlgc 23a3a4116a [Reduction] #479-482: pfgetc 2014-09-07 15:07:36 +02:00
nmlgc 99b60ff9b9 [Reduction] #473: execl 
And thus, we've singled out all Borland C++ runtime functions in all games but
TH01.
 2014-09-06 19:08:18 +02:00
nmlgc d575a37e1e [Reduction] #470-472: LoadProg 2014-09-06 19:07:54 +02:00
nmlgc 84b7d0f1ab [Reduction] #467: Far long multiplication 
Yeah, the code is identical to the near version, with the only difference
being the PROC directive declaring the function as either near or far. Now, I
could either turn the function body into some kind of macro stored in a
separate file and then instantiate it from both near and far functions... or I
could just copy the original structure. Who cares, anyway.
 2014-09-05 10:57:12 +02:00
nmlgc ccc560ab37 [Reduction] #466: searchenv 2014-09-04 20:55:28 +02:00
nmlgc dc9fc37b3f [Reduction] #465: searchstr 2014-09-04 20:55:27 +02:00
nmlgc 97711aac8f [Reduction] #464: mbcjmstojis 
"Multi-byte-character-<something>-shift-to-JIS"?
 2014-09-04 19:24:14 +02:00
nmlgc c0aa5b8a67 [Reduction] #461-463: fullpath.c 2014-09-04 19:04:39 +02:00
nmlgc af7f0b0ad6 [Reduction] #458-460: Double-byte character set functions 2014-09-03 23:23:25 +02:00
nmlgc e54a6ad120 [Reduction] #456: DOSCMD 
... I, um, cannot comprehend how the C source code I have for this function
could have been compiled into such an assembly.
 2014-09-03 19:13:47 +02:00
nmlgc 92046a8021 [Reduction] #455: getenv 2014-09-03 17:08:02 +02:00
nmlgc 01a126da71 [Reduction] #449: setvbuf 2014-09-03 14:02:14 +02:00
nmlgc 00e419e9da [Reduction] #448: setblock 2014-09-02 23:38:26 +02:00
nmlgc b77f2cfba0 [Reduction] #447: access 2014-09-02 23:26:19 +02:00
nmlgc 23aa61c002 [Reduction] #446: abort 
The one with the single underscore, which is just raise + a wrapper around the
one with two underscores.
 2014-09-02 21:45:19 +02:00
nmlgc 9d5aa934d4 [Reduction] #445: flushall 2014-09-02 21:44:35 +02:00
nmlgc 429f134a51 [Reduction] #442-444: fseek and ftell 2014-09-02 21:04:29 +02:00
nmlgc b82a03c3f8 [Reduction] #441: grcg_round_boxfill 
No local symbol definitions for variables here, as they are used in both the
normal function and the retfunc.
 2014-09-01 21:08:57 +02:00
nmlgc 6250206235 [Reduction] #432-440: xxv.cpp 
OK, *that's* the last piece of C++ crud shared across all main executables.
According to the object in the library file though, it seems to include one
more dword named
	__DestructorCountPtr
in the BSS segment. Neither games nor the runtime itself seem to use it, and
as a consequence, it doesn't even seem to be included in the games' BSS
segments, given that they all end with the symbols of xx.cpp...
 2014-09-01 13:51:23 +02:00
nmlgc f994832a28 [Reduction] #431: toupper 
Neither is this one. Also, interesting how IDA didn't identify the function in
one third of the cases.

[Binary change] Order of 2 relocations in TH03's MAINL.EXE, TH04's MAIN.EXE
and MAINE.EXE, and TH05's MAINE.EXE.
 2014-09-01 12:01:35 +02:00
nmlgc 4e16a92b07 [Reduction] #429: ctype 2014-09-01 12:01:32 +02:00
nmlgc 5b91dd3b42 [Reduction] #423: grcg_polygon_c 2014-09-01 06:52:28 +02:00
nmlgc b2c9ba67bc [Reduction] #422: draw_trapezoid 
Yup. From TH03 on, ZUN uses a different version of master.lib, containing more
features than the last official version 0.23 from May 1995. Given the relative
insignificance of the features in question, I presume that Amusement Makers
must have kept their own, improved fork of master.lib, rather than ZUN having
hacked master.lib on his own.

Anyway, that doesn't matter. In the end, we still have to reverse-engineer each
and every one of these changes, and some of the more complicated functions
won't even be reduced before the actual reverse-engineering step of this
project.

[Binary change] Order of 3 relocations in TH05's OP.EXE.
 2014-08-31 18:08:50 +02:00
nmlgc 5009e416a0 [Reduction] #420: grcg_fill 2014-08-31 12:22:19 +02:00
nmlgc e9e6d14ab6 [Reduction] #408: gaiji_backup and gaiji_restore 2014-08-31 10:23:41 +02:00
nmlgc bd2ef210c0 [Reduction] #407: gaiji_entry_bfnt 2014-08-31 10:09:59 +02:00
nmlgc 73aad4c7e6 [Reduction] #404-406: gaiji_write and gaiji_write_all 2014-08-31 09:50:38 +02:00
nmlgc 8c68537820 [Reduction] #401-403: gaiji_read and gaiji_read_all 2014-08-31 09:42:55 +02:00
nmlgc 1546628658 [Reduction] #399: grc_setclip 2014-08-31 08:36:33 +02:00
nmlgc 79db80bb09 [Reduction] #394: graph_pack_put_8 2014-08-31 07:26:45 +02:00
nmlgc 563ba7001e [Reduction] #389: text_putsa 2014-08-31 05:52:43 +02:00
nmlgc bd09a355b8 [Reduction] #388: text_putca 2014-08-31 05:41:23 +02:00
nmlgc c34c0aa09f [Reduction] #386: palette_entry_rgb 2014-08-31 05:14:54 +02:00
nmlgc 5b09a08612 [Reduction] #385: gaiji_putsa 2014-08-31 05:05:48 +02:00
nmlgc 9242a2dcee [Reduction] #384: gaiji_putca 2014-08-31 04:56:17 +02:00
nmlgc 00c6ed5f5e [Reduction] #380-383: super_put_rect 
[Binary change] db 0 → nop after the end of superptr_draw in all affected
executables.
 2014-08-31 04:46:46 +02:00
nmlgc 8571d60085 [Reduction] #375: pfread 2014-08-30 12:50:48 +02:00
nmlgc c39ded4bfa [Reduction] #374: pfrewind 
[Binary change] db 0 → nop after the function in TH05's OP.EXE.
 2014-08-30 12:33:48 +02:00
nmlgc f5e8062ec0 [Reduction] #373: pfseek 2014-08-30 12:26:02 +02:00
nmlgc b108d5d46f [Reduction] #372: IRand 2014-08-30 12:13:04 +02:00
nmlgc 12c1e8560f [Reduction] #369: file_write 2014-08-30 09:38:09 +02:00