Rooba
/
ReC98
mirror of https://github.com/nmlgc/ReC98.git
1
1
Fork 0
Code Issues Packages Projects Releases Wiki Activity
ReC98/th05/formats/pi_asm_2.asm

98 lines
1.6 KiB
NASM
Raw Normal View History

[Separate translation units] [th05] pi_free() (undecompilable) Well, it *would* have been decompilable, but that ridiculous placement of the nullptr assignment would have forced the entire function call to be spelled out in inline ASM, verbatim. No amount of comma operator trickery would have generated the same instructions either. And for a function this small and obvious in what its decompilation *should* be, it really defeated the purpose of adding a separate translation unit… Part of P0134, funded by [Anonymous].
2021-02-12 16:39:51 +00:00
; Second TH05 .PI assembly translation unit.
.386
[Maintenance] Remove the SHARED_ segment and all related workarounds Part of P0265, funded by [Anonymous] and iruleatgames.
2024-01-24 09:18:02 +00:00
.model use16 large SHARED
[Separate translation units] [th05] pi_free() (undecompilable) Well, it *would* have been decompilable, but that ridiculous placement of the nullptr assignment would have forced the entire function call to be spelled out in inline ASM, verbatim. No amount of comma operator trickery would have generated the same instructions either. And for a function this small and obvious in what its decompilation *should* be, it really defeated the purpose of adding a separate translation unit… Part of P0134, funded by [Anonymous].
2021-02-12 16:39:51 +00:00
locals
include pc98.inc
include libs/master.lib/func.inc
include libs/master.lib/master.inc
include th03/arg_bx.inc
[Separate translation units] [th05] pi_palette_apply() (undecompilable) … especially because this one *is* actually undecompilable. Reason: Base pointer assignment to BX, before saving the SI register on the stack. Part of P0134, funded by [Anonymous].
2021-02-13 16:19:06 +00:00
extrn Palettes:palette_t
[Separate translation units] [th05] pi_free() (undecompilable) Well, it *would* have been decompilable, but that ridiculous placement of the nullptr assignment would have forced the entire function call to be spelled out in inline ASM, verbatim. No amount of comma operator trickery would have generated the same instructions either. And for a function this small and obvious in what its decompilation *should* be, it really defeated the purpose of adding a separate translation unit… Part of P0134, funded by [Anonymous].
2021-02-12 16:39:51 +00:00
extrn _pi_headers:PiHeader
extrn _pi_buffers:far ptr
[Maintenance] Remove the SHARED_ segment and all related workarounds Part of P0265, funded by [Anonymous] and iruleatgames.
2024-01-24 09:18:02 +00:00
.code SHARED
[Separate translation units] [th05] pi_free() (undecompilable) Well, it *would* have been decompilable, but that ridiculous placement of the nullptr assignment would have forced the entire function call to be spelled out in inline ASM, verbatim. No amount of comma operator trickery would have generated the same instructions either. And for a function this small and obvious in what its decompilation *should* be, it really defeated the purpose of adding a separate translation unit… Part of P0134, funded by [Anonymous].
2021-02-12 16:39:51 +00:00
[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.
2022-04-02 04:19:18 +00:00
public @PI_PUT_8_ROWLOOP$QIIIUI
@pi_put_8_rowloop$qiiiui proc pascal near
[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].
2021-02-14 11:51:12 +00:00
; Can't use ARG, because the function doesn't `PUSH BP`!
@@stride_packed = word ptr [bp+2]
@@w = word ptr [bp+4]
@@top = word ptr [bp+6]
@@left = word ptr [bp+8]
@@h equ di
mov bp, sp
@@put_row:
push es
call graph_pack_put_8_noclip pascal, @@left, @@top, es, si, @@w
pop es
inc @@top
cmp @@top, RES_Y
jb short @@next_row
sub @@top, RES_Y
@@next_row:
add si, @@stride_packed
; .PI pointer normalization, see pi_buffer_p_normalize()
mov ax, si
shr ax, 4
mov dx, es
add dx, ax
mov es, dx
and si, 0Fh
dec @@h
jnz short @@put_row
retn 8
[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.
2022-04-02 04:19:18 +00:00
@pi_put_8_rowloop$qiiiui endp
[Decompilation] [th05] pi_put_8(), pi_put_quarter_8() > assigning to the DI register immediately before a CALL Yeah, no amount of comma operator trickery can get *that* out of this compiler. Also, these TH05 .PI functions are the only place in PC-98 Touhou with a `IMUL DI, imm8` instruction, which is impossible to get out of Turbo C++'s built-in assembler. Well, at least the `if` branches decompile somewhat nicely. Part of P0134, funded by [Anonymous].
2021-02-14 11:51:12 +00:00
[Maintenance] Remove `extern "C"` from more areas of code Much more than usual, now that we've got a snappy build system! This commit covers • All .PI functions across all games • TH02's High Score entry functions • TH03's shots_update() and shots_render() • All functions declared in `th04/op/op.hpp` • TH04/TH05's bb_txt_put_8_raw(), bullet_template_clip(), player_pos_update_and_clamp(), score_update_and_render(), and slowdown_frame_delay() • TH05's reimu_stars_update_and_render(), score_delta_commit(), stage2_invalidate(), stage2_update(), and space_window_set() Part of P0284, funded by [Anonymous] and Blue Bolt.
2024-05-23 20:04:35 +00:00
public @PI_PALETTE_APPLY$QI
func @pi_palette_apply$qi
[Separate translation units] [th05] pi_palette_apply() (undecompilable) … especially because this one *is* actually undecompilable. Reason: Base pointer assignment to BX, before saving the SI register on the stack. Part of P0134, funded by [Anonymous].
2021-02-13 16:19:06 +00:00
arg_bx far, @slot:word
push si
push di
mov si, @slot
imul si, size PiHeader
add si, offset _pi_headers + PiHeader._palette
mov di, offset Palettes
mov ax, ds
mov es, ax
mov cx, (size palette_t / dword)
rep movsd
call palette_show
pop di
pop si
ret_bx
endfunc
[Maintenance] Remove `extern "C"` from more areas of code Much more than usual, now that we've got a snappy build system! This commit covers • All .PI functions across all games • TH02's High Score entry functions • TH03's shots_update() and shots_render() • All functions declared in `th04/op/op.hpp` • TH04/TH05's bb_txt_put_8_raw(), bullet_template_clip(), player_pos_update_and_clamp(), score_update_and_render(), and slowdown_frame_delay() • TH05's reimu_stars_update_and_render(), score_delta_commit(), stage2_invalidate(), stage2_update(), and space_window_set() Part of P0284, funded by [Anonymous] and Blue Bolt.
2024-05-23 20:04:35 +00:00
public @PI_FREE$QI
func @pi_free$qi
[Separate translation units] [th05] pi_free() (undecompilable) Well, it *would* have been decompilable, but that ridiculous placement of the nullptr assignment would have forced the entire function call to be spelled out in inline ASM, verbatim. No amount of comma operator trickery would have generated the same instructions either. And for a function this small and obvious in what its decompilation *should* be, it really defeated the purpose of adding a separate translation unit… Part of P0134, funded by [Anonymous].
2021-02-12 16:39:51 +00:00
arg_bx far, @slot:word
mov bx, @slot
mov ax, bx
shl bx, 2
add bx, offset _pi_buffers
cmp dword ptr [bx], 0
jz short @@ret
imul ax, size PiHeader
add ax, offset _pi_headers
push ds
push ax
push word ptr [bx+2]
push word ptr [bx]
mov dword ptr [bx], 0
call graph_pi_free
@@ret:
ret 2
endfunc
end