Presumably, you are looking to use Perl to manipulate the source code of some assembler like language?
If so, the answer is yes. It would be a relatively simply s/// substitution.
But, in order to help you, you'll have to more clearly define
- the circumstances under when that substitution to take place;
Is it whenever the text ROUTINE#2 occurs (other than its definition)?
Or only when it appears as the second parameter to the EX instruction?
Only when it is the second argument and R1 is the first?
- the scope of the substitutions;
Is this all contained in one file? Multiple files?
- Much more information.
That said, whilst it could certainly be done with Perl, you may be better off using a proper macro processor like M4 or even a C pre-compiler.
Clearer questions lead to better answers -- and stop people misinterpreting the questions.
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
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