dasm-assembler / dasm-assembler/dasm
Macros can't redefine instructions
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- Dominant language
- C
- Stars
- 257
- Forks
- 55
- PR merge metrics
- No merged PRs in 30d
Description
I wanted to block out a particular instruction from use in my program.
I thought to define the instruction as a macro, and ERR inside the macro.
However, to my surprise, you don't appear to be able to redefine an instruction.
MAC LDA ; redefine as an error!
ECHO 'Don't use LDA!'
ECHO {0}
ERR
ENDM
In my tests, the macro is never instantiated.
Perhaps the documentation needs updating to indicate - or is it possible to 'fix' this issue?
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Research direction
The issue provides a minimal MAC LDA example but names no source files or tests. Start by reproducing the example and tracing how macro names are checked against instruction names; determine whether redefining an instruction should work or whether the documentation should describe it as unsupported.
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Assessment
- Tech stack
- c
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100