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GLASS malfunction?

By thegeps

Paragon (1156)

thegeps's picture

13-09-2022, 20:21

Exception in thread "main" nl.grauw.glass.expressions.EvaluationException: Not an instruction.
[at shadow.asm:1976]
set 0,l
at nl.grauw.glass.expressions.Expression.getInstruction(Expression.java:65)
at nl.grauw.glass.Line.getInstruction(Line.java:76)
at nl.grauw.glass.Line.expand(Line.java:91)
at nl.grauw.glass.Source.expand(Source.java:74)
at nl.grauw.glass.Source.expand(Source.java:68)
at nl.grauw.glass.Source.assemble(Source.java:50)
at nl.grauw.glass.Assembler.writeObject(Assembler.java:72)
at nl.grauw.glass.Assembler.main(Assembler.java:59)

what happened here? I've assembled this rom hundreds of time today and suddenly happened this. I'm not able to assemble my code anymore (if I comment this set instruction Glass doesn't like other ones too, like the ones present in arkos tracker code)

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By Grauw

Ascended (10681)

Grauw's picture

13-09-2022, 20:30

Do you perhaps happen to have a label named set in your code?

Otherwise, can you send me a test case? Email is in my profile.

By thegeps

Paragon (1156)

thegeps's picture

13-09-2022, 20:44

LoL how stupid I am XD
I really named a label as "set:"
Thank you for your fast answer Grauw Smile

By santiontanon

Paragon (1734)

santiontanon's picture

14-09-2022, 13:42

Hehe, I think it would be useful to print warnings when labels named after a mnemonic or a register name are defined. I was just testing my own assembler this past weekend on a codebase where they had defined constants "L", "R", "U", "D" for the directions of the joystick, and I feel it was compiling in the original assembler they used by pure chance (probably relying on upper/lower case for defaulting to the label or register), with the name clashes with registers "l", "r" and "d"!