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Document Argument passing for _BitInt types #239

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pinskia opened this issue Dec 2, 2024 · 1 comment · Fixed by #240
Closed

Document Argument passing for _BitInt types #239

pinskia opened this issue Dec 2, 2024 · 1 comment · Fixed by #240

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@pinskia
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pinskia commented Dec 2, 2024

Forwarded from https://hachyderm.io/@[email protected]/113574803870036780 .

The current BasicCABI.md does not document how _BitInt types are passed and it would be good to document it as such.

Note if someone does a GCC backend for WebAssembly, GCC folks in general has decided the ABI for _BitInt needs to be documented before it having it implemented too.

See ARM-software/abi-aa#175, riscv-non-isa/riscv-elf-psabi-doc#300 and https://gitlab.com/x86-psABIs/x86-64-ABI/-/merge_requests/32 for examples on how other ABIs (have or will have document it).
sunfishcode added a commit to sunfishcode/tool-conventions that referenced this issue Dec 2, 2024
@sunfishcode
Document the C ABI for _BitInt and other types.
96a84af 
Document the C ABI for `_BitInt`, `_Complex`, `__int128_t`, and
`__uint128_t`. These follow the ABI currently used by clang, to the
best of my knowledge.

Fixes WebAssembly#239.
@sunfishcode sunfishcode mentioned this issue Dec 2, 2024
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I've now filed #240 to document _BitInt and a few other types.

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Document the C ABI for _BitInt and other types. sunfishcode/tool-conventions
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@sunfishcode @pinskia