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Introduce support for returning symbols or strings in memory by using
the symbol table and REX prefixes for 64-bit register accesses
Signed-off-by: Ian Moffett <ian@osmora.org>
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Introduce register allocation via a bitmap where each bit corresponds to
a specific register index.
Signed-off-by: Ian Moffett <ian@osmora.org>
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This commit introduces lexical, parsing and code generation support for
the return statements. As of now, one is only able to return unsigned integers
but this will be expanded upon in the future
Signed-off-by: Ian Moffett <ian@osmora.org>
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Signed-off-by: Ian Moffett <ian@osmora.org>
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This commit introduces the groundwork for the AMD64 PIIR backend. We
will not follow through with the plans of using abstract syntax trees as
they'll overly complicate the project. Instead we'll utilize a ring
buffer to store the list of instructions and a stack machine for the IR
code.
Signed-off-by: Ian Moffett <ian@osmora.org>
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This commit introduces the initial sources for the intermediate
representation (IR) engine [called PIIR (PI-IR)] to PIRHO
PIIR: [NOUN]: border, boundary, frontier
Signed-off-by: Ian Moffett <ian@osmora.org>
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