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Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
Reviewed-by: Malfurious <m@lfurio.us>
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Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
Reviewed-by: Malfurious <m@lfurio.us>
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Python's dataclass annotation gives us a nice way to cleanly and
concisely define our list of supported architectures similar to namedtuple.
Unlike namedtuple, though, dataclass gives us an actual class that is
significantly more feature rich and even allows us to add functionality.
In general, these are meant to be like const records of info about an
architecture, so we use frozen=True to enforce some const correctness.
There were some issues when involving other classes for the ActiveArch
feature (subclassing and composition both had their respective issues),
so I'm removing __ActiveArch__ and putting a set() method directly on
Arch. This method will copy a given Arch into the self object. This
technically breaks const correctness as this does modify the object, but
it is intended to only be used on a single sentinel Arch that represents
the active arch. This arch is initialized with x86_64 by default.
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
Reviewed-by: Malfurious <m@lfurio.us>
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Add a layer of indirection to access the active arch config.
Currently when importing sploit.arch.arch, the name will be bound to
whatever the current reference is and won't follow if another module
(user script) updates the reference in sploit.arch. A layer of
indirection seemlessly solves that issue and also provides a cleaner
interface for setting the active arch from the user script.
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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This _should_ be accurate for ARMv7-a at least (including thumb mode).
We might want to later include ARMv8 details, which would primarily
include a 64-bit profile - I just don't have the details at the moment.
A namedtuple is now used as the implementation of type 'Arch', which
allows the definitions to be much more compact and table-like,
aiding readability.
Signed-off-by: Malfurious <m@lfurio.us>
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This was the name I had originally intended to use while factoring
architecture details out to the global scope. It's not terribly
different, but I feel the new context warrants some additional clarity.
Signed-off-by: Malfurious <m@lfurio.us>
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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Add Arch class which specifies wordsize, endianness, alignment, and a
nop code for an architecture.
Add a couple predefined architectures for x86 and x86_64
Add a "configured" architecture which is set to x86_64 by default.
Added btoi and itob functions which will convert to and from bytes and
ints based on the current architecture config
Signed-off-by: dusoleil <howcansocksbereal@gmail.com>
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