Add ToyOS operating system - #134
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default_calling_convention() returned Err for ToyOS targets because the OS was never added to the SysV list. Fixed upstream in bytecodealliance#134. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Jul 27, 2026
ToyOS is an operating system written from scratch in Rust, targeting x86-64 (https://github.com/Japabu/toyos). It uses the standard System V calling convention on x86-64, so it is registered alongside the other SysV platforms in default_calling_convention(). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Adds
OperatingSystem::Toyosfor ToyOS, an operating system written from scratch in Rust targeting x86-64 (UEFI, 2020+ hardware). It has its own Rust target (x86_64-unknown-toyos) via a compiler fork, and uses target-lexicon throughrustc_codegen_cranelift.The change follows the existing pattern for platforms like
RedoxandPsp:OperatingSystem::Toyosenum variantDisplayarm returning"toyos"FromStrarm parsing"toyos"default_calling_convention()— ToyOS uses the standard System V calling convention on x86-64cargo testpasses (14/14). Happy to adjust anything that doesn't fit your conventions.