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Having a From<std::io::Error> came from a hacky beginning in which
std::io::Error was being abused. Now the error handling is saner, so
there's no more need for that.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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There were a lot of assumptions on the assembler that stemmed from a
fundamental missunderstanding from my side on how segments are laid out
on the final file. This commit is the first step to address this.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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Allow for anonymous labels to be defined and referenced by using the
same syntax as cc65.
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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The initial implementation was incredibly naive on how complex an
assembler can actually be. Because of this, it never bothered to define
and produce a proper AST, and hence it was overall extremely fragile on
(not so) corner cases.
This commit re-writes everything from scratch for the parser, and it
should really be the last fundamental change to the parser other than
minor additions/features here and there.
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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A lot is missing and there is a long road ahead to make the assembler
even work.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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