+- Forum (https://www.boriel.com/forum)
+-- Forum: Compilers and Computer Languages (https://www.boriel.com/forum/forumdisplay.php?fid=12)
+--- Forum: ZX Basic Compiler (https://www.boriel.com/forum/forumdisplay.php?fid=11)
+---- Forum: Help & Support (https://www.boriel.com/forum/forumdisplay.php?fid=16)
+---- Thread: Is possible to do this? (/showthread.php?tid=878)
Is possible to do this? - maeloterkim - 04-30-2019
Hi : ) I want to do something like this
iniSuperSub:
SUB mySuperSub()
....
...
....
END SUB
endSuperSub:
SUB otherSub()
ASM
defs 6144-(@endSuperSub - @iniSuperSub),0
END ASM
END SUB
The compiler says -> Error: illegal preprocessor character '@'
I want to do in assembler -> defs (6144 - size mySuperSub ), 0
There is some way to do something like this?
Thanks
Re: Is possible to do this? - boriel - 04-30-2019
Not sure why do you need that, but the compiler reallocates functions and subs at the end of the program, so @endSuperSub - @iniSuperSub = 0
You have to put the labels within the function body.
Within an ASM context, don't use @. Use just the label name, prefixing it with '_'.
So use:
Code:
SUB mySuperSub()
REM this label goes *inside* the sub or it will not work as you expect
iniSuperSub:
...
...
...
REM this label goes *inside* the sub or it will not work as you expect
endSuperSub:
END SUB
SUB otherSub()
ASM
defs 6144-(_endSuperSub - _iniSuperSub),0
END ASM
END SUBAlso, not sure if defs will work here instead of db or dw...
Re: Is possible to do this? - maeloterkim - 04-30-2019
I'ts not working either with "_"
Well i try to figure out, how manage better, where to put things
I need space in at exactly number of memory and i don't know if there are directives like in assembler ORG
to control better, where are every thing
I'm looking the generated memory map but is a little mess
If i want per example, n bytes of space beginning on 43456
Can i do that with some directive?
Re: Is possible to do this? - boriel - 05-01-2019
When doing things like this, just compile with --asm flag to see the resulting asm file, and examine it.
I was wrong: you have to prefix ("mangle") you labels in ASM, with __LABEL__. So this should work:
Code:
SUB mySuperSub()
REM this label goes *inside* the sub or it will not work as you expect
iniSuperSub:
...
...
...
REM this label goes *inside* the sub or it will not work as you expect
endSuperSub:
END SUB
SUB otherSub()
ASM
defs 6144-(__LABEL__endSuperSub - __LABEL__iniSuperSub),0
END ASM
END SUBRe: Is possible to do this? - maeloterkim - 05-01-2019
Yes this __LABEL__ before works
Thanks