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ReC98/th02/zun_res1.c

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[C decompilation] [th02] ZUN_RES.COM This, hands down, has been the single worst stretch of decompilation so far. Three extremely difficult functions that each still required inline assembly. And no, this didn't even work out with any of the optimization features in Borland C++ that aren't included in Turbo C++.
2015-09-16 03:02:29 +00:00
/* ReC98
* -----
* 1st part of ZUN_RES.COM. Initializes the resident structure and
[Maintenance] [th02] Split ZUN_RES.COM into three translation units Necessary to make string literals from the first one end up at their correct positions in the data segment even after the upcoming deduplication… Part of P0076, funded by [Anonymous] and -Tom-.
2020-02-21 21:10:47 +00:00
* configuration file required in order to run TH02.
[C decompilation] [th02] ZUN_RES.COM This, hands down, has been the single worst stretch of decompilation so far. Three extremely difficult functions that each still required inline assembly. And no, this didn't even work out with any of the optimization features in Borland C++ that aren't included in Turbo C++.
2015-09-16 03:02:29 +00:00
*/
#include <stddef.h>
#include "th02/th02.h"
[Maintenance] Move TH02's sound functions to a separate header Oh hey, guarding declarations with complicated types via #ifdef limits the header files we additionally have to #include! Part of P0076, funded by [Anonymous] and -Tom-.
2020-02-18 18:46:34 +00:00
#include "th02/snd/snd.h"
[Maintenance] [th02] Move .CFG/resident initialization to separate files All future RES_*.COM binaries reuse this code. Completes P0076, funded by [Anonymous] and -Tom-.
2020-02-21 21:56:18 +00:00
#include "th02/formats/cfg.h"
[C decompilation] [th02] ZUN_RES.COM This, hands down, has been the single worst stretch of decompilation so far. Three extremely difficult functions that each still required inline assembly. And no, this didn't even work out with any of the optimization features in Borland C++ that aren't included in Turbo C++.
2015-09-16 03:02:29 +00:00
#pragma option -a1
[Maintenance] [th02] Move .CFG/resident initialization to separate files All future RES_*.COM binaries reuse this code. Completes P0076, funded by [Anonymous] and -Tom-.
2020-02-21 21:56:18 +00:00
int pascal scoredat_verify(void);
[C decompilation] [th02] ZUN_RES.COM This, hands down, has been the single worst stretch of decompilation so far. Three extremely difficult functions that each still required inline assembly. And no, this didn't even work out with any of the optimization features in Borland C++ that aren't included in Turbo C++.
2015-09-16 03:02:29 +00:00
[Maintenance] [th02] Move .CFG/resident initialization to separate files All future RES_*.COM binaries reuse this code. Completes P0076, funded by [Anonymous] and -Tom-.
2020-02-21 21:56:18 +00:00
char debug = 0;
[Naming] [th02/th04/th05] Maximum and default starting lives and bombs Oh wow, caff4fe introduced wrong bytes into RES_KSO.COM by confusing [cfg_bombs] with [credit_lives] -.- Which I didn't find out back then because all the RES_*.COM binaries still had some different instruction encodings anyway and I just didn't care enough to base my diff of those files on the wrong encoding versions to notice the bug… Whoops. Part of P0077, funded by Splashman and -Tom-.
2020-02-22 16:39:23 +00:00
const cfg_options_t OPTS_DEFAULT = {
RANK_NORMAL, SND_BGM_FM, CFG_BOMBS_DEFAULT, CFG_LIVES_DEFAULT, 0
};
[C decompilation] [th02] ZUN_RES.COM This, hands down, has been the single worst stretch of decompilation so far. Three extremely difficult functions that each still required inline assembly. And no, this didn't even work out with any of the optimization features in Borland C++ that aren't included in Turbo C++.
2015-09-16 03:02:29 +00:00
[Maintenance] [th02] Move .CFG/resident initialization to separate files All future RES_*.COM binaries reuse this code. Completes P0076, funded by [Anonymous] and -Tom-.
2020-02-21 21:56:18 +00:00
#include "th02/formats/cfg_init.c"
[C decompilation] [th02] ZUN_RES.COM This, hands down, has been the single worst stretch of decompilation so far. Three extremely difficult functions that each still required inline assembly. And no, this didn't even work out with any of the optimization features in Borland C++ that aren't included in Turbo C++.
2015-09-16 03:02:29 +00:00
[Decompilation] [th02] Get zun_res1.c right 4½ years after aa56a7c, it turns out that the correct decompilation involves… no-ops generated by assigning variables that just happen to be in registers to themselves?! Which does get optimized out, but only after TCC folded identical tail code in all branches of a function, thus effectively functioning as an optimization barrier. The initial attempt used register pseudovariables, but this definitely is the best possible way this could work – portable, and doesn't unnecessarily shred the code into tiny inlined functions pieces. The mindblowing thing here is that ZUN could have actually written this to have additional, albeit unnecessary, lines to place breakpoints on. But that means he must have chosen those two local variables in SI and DI completely by chance… 🤯 The best thing though? ~#pragma inline is gone~ Part of P0076, funded by [Anonymous] and -Tom-.
2020-02-21 21:21:20 +00:00
#define LOGO \
"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>^<5E>p<EFBFBD>@ <20>풓<EFBFBD>v<EFBFBD><76><EFBFBD>O<EFBFBD><4F><EFBFBD><EFBFBD><EFBFBD>@ZUN_RES.com Version1.01 (c)zun 1997"
[Maintenance] [th02] Move .CFG/resident initialization to separate files All future RES_*.COM binaries reuse this code. Completes P0076, funded by [Anonymous] and -Tom-.
2020-02-21 21:56:18 +00:00
#define RES_INIT_TOP \
if(scoredat_verify() == 1) { \
dos_puts2("<EFBFBD>n<EFBFBD>C<EFBFBD>X<EFBFBD>R<EFBFBD>A<EFBFBD>t<EFBFBD>@<40>C<EFBFBD><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>́A<CC81><41><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>x<EFBFBD><78><EFBFBD>s<EFBFBD><73><EFBFBD>ĂˁB\n"); \
return 1; \
[C decompilation] [th02] ZUN_RES.COM This, hands down, has been the single worst stretch of decompilation so far. Three extremely difficult functions that each still required inline assembly. And no, this didn't even work out with any of the optimization features in Borland C++ that aren't included in Turbo C++.
2015-09-16 03:02:29 +00:00
}
[Maintenance] [th02] Move .CFG/resident initialization to separate files All future RES_*.COM binaries reuse this code. Completes P0076, funded by [Anonymous] and -Tom-.
2020-02-21 21:56:18 +00:00
[Decompilation] [th05] RES_KSO.COM And of course, TH05 ruins the consistency once again. Sure, the added file error handling is nice, but we also have changes in the playful messages (lol), and now need a third distinct optimization barrier (🤦)… But as it turns out, inlined calls to empty functions work as well. They also seem closer to what ZUN might have actually written there, given that their function body could have been removed by the preprocessor, similar to the logging functions in the Windows Touhou games. (With the difference that the latter infamously *aren't* inlined…) Part of P0077, funded by Splashman and -Tom-.
2020-02-22 19:04:53 +00:00
#define optimization_barrier_3()
#define RES_INIT_BOTTOM \
cfg_init(sgm);
[Maintenance] [th02] Move .CFG/resident initialization to separate files All future RES_*.COM binaries reuse this code. Completes P0076, funded by [Anonymous] and -Tom-.
2020-02-21 21:56:18 +00:00
#include "th02/res_init.c"
[C decompilation] [th02] ZUN_RES.COM This, hands down, has been the single worst stretch of decompilation so far. Three extremely difficult functions that each still required inline assembly. And no, this didn't even work out with any of the optimization features in Borland C++ that aren't included in Turbo C++.
2015-09-16 03:02:29 +00:00
#pragma codestring "\x00"