| Age | Commit message (Collapse) | Author |
|---|
|
This upstreams the object file parsing from zwld, bringing us closer to being able
to link stage2 code with object files/C-code as well as replacing lld with the self-hosted
linker once feature complete.
|
|
This allows us to get rid of unused fields when generating code for non-function decls.
We can now create seperate instances of `DeclGen` which in turn can then be used
to generate the code for a constant.
Besides those reasons, it will be much easier to switch to the generic purpose `codegen.zig` that any
backend should use. Allowing us to deduplicate this code.
|
|
|
|
- This implements the required codegen for decl types such as pointers, arrays, structs and more.
- Wasm's start function can now use both a 'u8' and 'void' as return type. This will help us with writing tests
using the stage2 testing backend. (Until all tests of behavioural tests pass).
- Now correctly generates relocations for function pointers.
- Also implements unwrapping error union error, as well as return pointers.
|
|
The function table contains all function pointers that are called
by using call_indirect. During codegen, we create a relocation
where the linker will resolve the correct index into the table and stores
this value within the data section at the location of the pointer.
|
|
This contains a few additions:
- Proper stack pointer calculation keeping alignment in mind.
- Setting up memory layout (including user flags).
- Export or import memory
- Handle 'easy' linker tasks during incremental compilation, while offloading
heavy-tracking/computation tasks to `flush()`
- This architecture allows us to easily integrate with the rest of 'zwld' to
implement linking stage2 code with external object files.
|
|
We now resolve relocations for globals, memory addresses and function indexes.
Besides above, we now also emit imported functions correctly and create a
corresponding undefined symbol for it, where as we create a defined symbol
for all other cases.
TODO: Make incrememental compilation work again with new linker infrastructure
|
|
- 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.
|
