Eqtype in preprocessor

Index > Macroinstructions > Eqtype in preprocessor

Author

Thread

thetrick

Joined: 19 Feb 2020
Posts: 18

thetrick 14 Jan 2024, 12:53

Hello.

I have such MATCH to process some binary instructions:

Code:

match opcode arg1 =, arg2, instructions

Can preprocessor check if the arg2 is a numerical expression? I need to check it in the preprocessor stage. Now i have such construction:

Code:

if arg2 eqtype 1

but it's done in the assembling stage and some labels inside this construction are invalid when arg2 isn't numerical.

I tried to use rept 1:... but it produces the error when the arg2 isn't numerical.

Thanks.

14 Jan 2024, 12:53

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20343
Location: In your JS exploiting you and your system

revolution 14 Jan 2024, 16:27

There are no preprocessor actions that can examine the individual characters of a symbol.

Maybe if irpc existed it could be possible:

Code:

irpc char, symbol { ; loop through each character of a symbol. But irpc doesn't exist 
    match ... ; something here to look for '0' through '9' maybe?
}

14 Jan 2024, 16:27

Roman

Joined: 21 Apr 2012
Posts: 1795

Roman 16 Jan 2024, 09:05

What eqtype for symbols /+-* ?
Or only match for this symbols ?

16 Jan 2024, 09:05

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20343
Location: In your JS exploiting you and your system

revolution 16 Jan 2024, 13:24

We can test it to see what happens.

Code:

test.asm [1]:
if + eqtype +
processed: if+eqtype+
error: reserved word used as symbol.

16 Jan 2024, 13:24

ProMiNick

Joined: 24 Mar 2012
Posts: 799
Location: Russian Federation, Sochi

ProMiNick 16 Jan 2024, 14:47

eqtypes: {+},{/},{*},{\-},{any started with nonnegate member parentless expression}
backslash within if had a weird effect

Code:

if {\-\-\-} eqtype {\[\eax\]}
 display 'no matter what prepended by \'
end if 
if {\-\-\-} eqtype {\eax \+ \1}
 display 'it is always compared only by count'
end if

Code:

if {+} eqtype {+} ; curvy brackets ecranise from reserved word error

{-} not eqtype anything except {-} itself
eqtypes: <+>,</>,<*>,<->,<any started with nonnegate member parentless
eqtypes: <->,<-->,<--->
expression>

Code:

if <+> eqtype <+> ; less-greater brackets ecranise from reserved word error too

have a nice to play brackets and combinations:

Code:

if {eax-1} eqtype {eax+1}
 display 'never'
end if
if <eax-1> eqtype <eax+1>
 display 'always'
end if

in some cases "if" could do things that thou thought previously it can`t. but still don`t affect on preprocessor stage.

16 Jan 2024, 14:47

Roman

Joined: 21 Apr 2012
Posts: 1795

Roman 16 Jan 2024, 17:47

We need eqsymbol !

16 Jan 2024, 17:47

Overclick

Joined: 11 Jul 2020
Posts: 669
Location: Ukraine

Overclick 16 Jan 2024, 19:08

Actually you can read the file as binary and work with opcodes then proceed in own way. You can see such example in my Xeon patcher.

Description:		Download
Filename:	FlyTurboBoostPatcher_v6.rar
Filesize:	294.23 KB
Downloaded:	89 Time(s)

16 Jan 2024, 19:08

thetrick

Joined: 19 Feb 2020
Posts: 18

thetrick 01 Feb 2024, 10:19

Thank you guys!

01 Feb 2024, 10:19

< Last Thread | Next Thread >

Forum Rules:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum