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We now detect if the return type will be set by passing the first argument
as a pointer to stack memory from the callee's frame. This way, we do not have to
worry about stack memory being overwritten.
Besides this, we implement memset by either using wasm's memory.fill instruction when available,
or lower it manually. In the future we can lower this to a compiler_rt call.
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The linker will now emit names for all function, global and data segment symbols.
This increases the ability to debug wasm modules tremendously as tools like wasm2wat
can use this information to generate named functions, globals etc, rather than placeholders such as $f1.
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- Converts previous `DeclBlock` into `Atom`'s to also make them compatible when
the rest of zlwd gets upstreamed and we can link with other object files.
- Resolves function signatures and removes any duplicates, saving us a lot of
potential bytes for larger projects.
- We now create symbols for each decl of the respective type
- We can now (but not implemented yet) perform proper relocations.
- Having symbols and segment_info allows us to create an object file
for wasm.
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We already have a LICENSE file that covers the Zig Standard Library. We
no longer need to remind everyone that the license is MIT in every single
file.
Previously this was introduced to clarify the situation for a fork of
Zig that made Zig's LICENSE file harder to find, and replaced it with
their own license that required annual payments to their company.
However that fork now appears to be dead. So there is no need to
reinforce the copyright notice in every single file.
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- Some opcodes have the incorrect value set in std.
- Some opcodes were missing and have now been added to std.
- Adding wrapping operands for add,sub and mul.
- Implement intCast which either extends or shortens the type.
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This refactor inserts an offset table into wasm's data section
where each offset points to the actual data region.
This means we can keep offset indexes consistant and do not
have to perform any computer to determine where in the data section
something like a static string exists. Instead during runtime
it will load the data offset onto the stack.
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Update link.Wasm.zig to use std.wasm for its constants
Make opcodes u8 and non-exhaustive
Update test and rename 'spec' to 'wasm'
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