Commit Graph

11 Commits

Author SHA1 Message Date
nmlgc a2358bef47 [Maintenance] Remove `extern "C"` from `x86real.h` and `decomp.hpp`
One of those per delivery now, eh?

Part of P0189, funded by Arandui and Lmocinemod.
2022-04-16 23:53:46 +02:00
nmlgc ea54e59f93 [Maintenance] Macros: Avoid references to implicit local variables
If the macro itself is local to a function, these can work in certain
scenarios, but never for global ones.

Part of P0186, funded by [Anonymous] and Blue Bolt.
2022-03-25 14:03:53 +01:00
nmlgc ff3d2cafe4 [Maintenance] Highlight dependencies on pseudoregisters with the `asm` keyword
These make up 41% of all our current inline ASM blocks, and *should*
break on other compilers.

Part of P0183, funded by Yanga and [Anonymous].
2022-02-18 09:36:34 +01:00
nmlgc ba9fe94b42 [Maintenance] Consistently use { brackets } for inline assembly
Part of P0183, funded by Yanga and [Anonymous].
2022-02-18 09:36:34 +01:00
nmlgc 6058395372 [Maintenance] Change the inline assembly keyword to `_asm`
The single underscore version is actually slightly more supported among
the compilers I've seen so far. Also added the exact list now.

Part of P0183, funded by Yanga and [Anonymous].
2022-02-18 09:36:34 +01:00
nmlgc aae96aec45 [Decompilation] Find out how to bypass TCC's optimization of 0 immediates
By deferring that immediate 0 to link time. 🤦

Part of P0146, funded by -Tom- and Ember2528.
2021-06-09 23:12:04 +02:00
nmlgc 9739f69729 [Maintenance] Add a 1bpp rectangle template, for custom per-row types
This gets rid of a couple of per-entity sprite bitplane types, makes
sprite declarations easier to read by putting width and height next to
each other… and points out a number of array dimension mistakes -.-
Even in places where we can't use it.

Part of P0138, funded by [Anonymous] and Blue Bolt.
2021-04-21 18:01:57 +02:00
nmlgc 1244bd74e7 [Maintenance] Prefer the -zC and -zP options over `#pragma codeseg`
Might look uglier, but has the advantage of not generating an empty
segment with the default name… *and* the default padding, which will
really come in handy with the following breakthrough.

Part of P0137, funded by [Anonymous].
2021-04-03 20:12:09 +02:00
nmlgc 0dfe3bc3c9 [Decompilation] [th05] .PI: EGC setup for masked blitting
And again.

Part of P0134, funded by [Anonymous].
2021-02-21 14:04:50 +01:00
nmlgc 76cefb1e37 [Decompilation] [th05] pi_load()
That assembly is *worse* than what you would have gotten out of your
1994 C++ compiler with the 386 code generation switch!

Part of P0134, funded by [Anonymous].
2021-02-21 14:04:48 +01:00
nmlgc ffcc46d32f [Decompilation] [th05] pi_put_8(), pi_put_quarter_8()
> assigning to the DI register immediately before a CALL
Yeah, no amount of comma operator trickery can get *that* out of this
compiler. Also, these TH05 .PI functions are the only place in PC-98
Touhou with a `IMUL DI, imm8` instruction, which is impossible to get
out of Turbo C++'s built-in assembler.
Well, at least the `if` branches decompile somewhat nicely.

Part of P0134, funded by [Anonymous].
2021-02-20 23:50:03 +01:00