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As a way to firstly adapt on the latest changes from the parser since
184c39579227 ("Re-work the parser from scratch"), the assembler had to
leave out some features on 16114b2ca358 ("Adapt the assembler to the
changes on the parser"). This commit reintroduces support for settings
labels, variables and referencing them, while also providing a more
robust implementation at that.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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As of 184c39579227 ("Re-work the parser from scratch") the parser has a
proper AST, and the assembler has to traverse it accordingly.
Moreover, the assembler has been stripped from a lot of unneeded memory
allocations and it's overall more keen on using mere references when
possible.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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Macros can now be described with the '.macro' control statement, but no
parameters can be given and it's overall pretty brittle.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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Procedures are marked with the '.proc' control statement and work both
as a scoping mechanism and as a label that can be referenced.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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This is a bare bones implementation of it, and there's a lot of nuance
that it's being missed, but at least the fundamentals have been
implemented already.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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Mappings and segments are fundamental blocks on how code is distributed
both on the actual ROM File and in the memory layout.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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