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This commit introduces the ability to inspect the temptative header
before producing the actual output, and with that it checks whether the
Working RAM is being advertised or not. If it is not being advertised
but the assembler detected memory accesses to that region, then we are
in trouble and we should error out.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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These were theoretical tools that could be provided, but I have neither
had the time, or their perceived functionality has been moved into other
crates. Hence, just remove them.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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Apparently the standard library had LazyLock which is enough for what I
wanted to achieve with lazy_static.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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When I introduced this dependency it looked like a good idea to have a
better-looking replacement to cl65's cfg format. That being said, the
end result wasn't *much* prettier either, and the end result could be
even bigger and equally confusing.
Since 5f48de69f46d ("Add support for cfg files") there is quite the
framework in order to support regular cl65's cfg files. Hence, this
commit takes another approach: let's tune this format to a more
compressed and simplified one. This is now the current "nasm cfg"
format, and it allowed us to re-use a lot of code while also being more
to the point for NES/Famicom development than the original cfg format.
With this new format, we can now remove the dependency on TOML and all
of the inner dependencies which were quite a lot.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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All three binaries (i.e. readrom, nasm and xa65) used it, and to be
honest rolling our own argument parsing was actually pretty easy to
achieve. This frees us from a big dependency and it also frees us from
inner dependencies such as 'clap_derive' which prevented us from being
able to build binaries purely statically.
As a side effect, we can now display help/version messages which are
more like I'm used to, and certain checks can be moved in the parsing
directly instead of having to be done later. As a cherry on top, there
is some type masturbation that gets removed along the way.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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This dependency was easily avoidable and it brought with it a lot of
inner dependencies of its own, most notably 'zerocopy-derive', which
forbid us to compile the affected programs purely statically.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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Following in the footsteps of c20c991dded8 ("Make errors from nasm
itself more cohesive"), 'anyhow' might provide an easy framework, but it
lends towards a less cohesive experience.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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This is a bridge between 'nasm' and 'cl65'. That is, it runs the same
command on both 'nasm' and 'cl65', compares the resulting binaries, and
gives back the binary from 'cl65'.
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 will allow the creation of configuration files that can live
outside of this tree, so developers can fine tune configuration files of
their own without having to pick up whatever is currently available.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
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The readrom binary is similar to `readelf` from Linux and it will allow
to display information from an NES/Famicom ROM file. For now the
information being shown is just the header, but in the future we might
also include disassembling parts of the code, or retrieving the "CHARS"
section for a given ROM file, and similar.
In order to implement the header parsing part a new library has been
introduced, simply named "header" which abstracts everything away so you
just need to call `Header::try_from("my bytes")` to fetch the actual
information.
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 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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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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