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This needed some heavy lifting when it comes to how files were located.
This means that statements like .include/.incbin now take into
consideration a new list made out of SourceInfo, which holds enough
information to translate from which file a node comes from. This has
also been added into errors, so they are more informative on what went
wrong.
In order to tests this, besides all the regular unit tests, a new e2e
test has been added.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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This is a control statement which acts similarly as .proc/.macro/.scope,
in which an inner block is allocated for it. Hence, all the previous
work from 1f8a6becc7cd ("parser: Implement block bodies") and
ec8b709fa24c ("Implement block bodies inside of the assembler") make
this one out possible, as .repeat statements don't have an identifier
that can be used for hashing.
From the parser perspective this introduction raises two new things.
First of all this control statement also needed a differentiation
between the amount of required arguments, and the allowed ones, since
there is a second optional argument to it. And second, even the
identifier is not given, we have to generate one so to add a context for
it. This was at first not needed, but introducing .repeat-only variables
means that we have to have inner contexts which need to be named somehow
so we can retrieve the context later when picking up the value for them
again.
This last thing brought the need for a new dependency: rand. This is
used to generate a random string to identify the .repeat block.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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This also forced us to add the current working directory to the
`Assembler::assemble` public function, as otherwise this control
statement and others wouldn't know how to resolve relative paths.
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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Instead, use a new enum type to identify the control statements that we
actually support. This way the assembler is more easily aware on the
control that it's dealing with, and can be more sure on certain aspects
of the implementation on control support.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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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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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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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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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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